CN203726792U - Micro high-temperature spinning machine - Google Patents

Abstract

The utility model relates to a miniature high-temperature spinning machine. Two conical screws are installed in the barrel of the spinning machine, and the conical screws are powered by a motor, and a valve filter screen and a spinneret are installed at the discharge port of the barrel. Plate, heating block is installed on the back of the barrel, and an automatic feeding machine is installed above the barrel. Due to the introduction of the automatic feeding machine of this high-temperature spinning machine, the amount of raw materials entering the screw can be controlled. At the same time, its valve and circulation channel structure enable the raw materials to be mixed up and down in the screw through the circulation channel, so as to obtain better blending effect. The utility model only needs 10g-15g of resin to carry out experiments, greatly saving raw materials. At the same time, the instrument uses a resistance wire copper block heater, which is wrapped with an insulation sleeve, so that the spinning temperature can reach a maximum of 500°C. This device can not only save the amount of raw materials used in experiments and scientific research, but also has a good mixing effect, which is convenient for carrying out and simulating various processing experiments.

Description

A miniature high temperature spinning machine

technical field

The utility model belongs to the field of melt spinning equipment and relates to a miniature high-temperature spinning machine, in particular to a miniature high-temperature spinning machine which is mainly used in experimental teaching and scientific research experiments and is especially suitable for small-dose experiments.

Background technique

With the rapid development of polymer blends and nanocomposites, there is an urgent need for a laboratory spinning device for new material research. This is because the yield obtained in the laboratory at the initial stage is very low or the material itself is expensive, and the acquisition of many new materials can only be measured in units of "g". However, in general melt spinning, screw extrusion is used to generate melt pressure, and metering pumps are used to achieve uniform filament discharge. If this method is used for experimental research, the main problems are complex structure, high cost and large amount of feeding. Especially in formula design and spinning modification experiments, it is necessary to frequently change the formula, clean the barrel, and replace the filament board.

Therefore, a micro-spinning machine is now required, which can process these micro-materials, and can accurately simulate the spinning process at the same time, and requires the instrument to be easy to operate. But the spinning effect of existing most small-sized spinning machines is not quite ideal, because at first they are generally single-screw extruders, and the mixing effect is not good. If there is a small spinning machine with a metering pump, the operation and maintenance costs are relatively high, while for a spinning machine without a metering pump, the spinning effect is not good, and the spinning process is prone to broken filaments. At the same time, the modification and spinning research of special plastics are very popular in recent years, but the maximum spinning temperature of most spinning machines on the market is 300°C, which cannot meet the spinning processing requirements of most special plastics.

Contents of the invention

A miniature high-temperature spinning machine of the utility model, because of its unique automatic feeder, can control the amount of raw materials entering the screw, saves the metering pump, and is more convenient to operate. At the same time, its screw and valve structure are different from ordinary spinning Compared with the screw machine, it can stay in the screw for a longer time. The utility model not only has a good blending effect, but also only needs 10g-15g of resin to carry out experiments, which greatly saves raw materials. At the same time, the instrument uses a copper block heater so that the spinning temperature can reach up to 500°C. This device can not only save the amount of raw materials used in experiments and scientific research, but also has a good mixing effect. There is also a nitrogen filling protection system and airflow cooling system in the barrel, which is convenient for carrying out and simulating various processing experiments. Ideal for formulations where certain ingredients are particularly expensive or difficult to obtain.

A miniature high-temperature spinning machine of the present utility model mainly includes a frame, a hinged barrel, a conical twin screw, a heating device and an automatic feeding device;

The hinge-type barrel is composed of two symmetrical bodies with half cavities each. When the two blocks are combined, they form a barrel cavity, an input shaft hole, a feeding channel, a discharging channel and a circulation channel. The main body of the cavity is a bottom-up conical depression, the longitudinal center section plane of the conical shape is consistent with the plane of the block, and the bottom of the conical shape is provided with two semicircular grooves for the input shaft hole, and the input shaft hole The depth of the semicircular groove is equal to the radius of the input shaft hole, and the upper side of the conical shape has a semicircular groove for the feed channel, the depth of the semicircular groove of the feed channel is equal to the radius of the feed channel, and the conical shape On the other side, there is a semi-circular groove of the circulation pipe, the depth of the semi-circular groove of the circulation pipe is equal to the radius of the semi-circular groove of the circulation pipe, and the upper end of the semi-circular groove of the circulation pipe is connected to the upper part of the conical shape, The lower end of the semicircular groove of the circulation pipe is connected to the lower part of the conical shape; the top of the conical shape is provided with a semicircular groove of the discharge channel, and the depth of the semicircular groove of the discharge channel is equal to the semicircular groove of the discharge channel. The radius of the groove; the lower end of the hinged barrel is connected with the pressure sensor;

The right conical screw and the left conical screw are installed in the barrel cavity of the combined hinged barrel, and the input shaft of the conical twin screw passes through the input shaft hole to drive the input shaft The drive motor is mounted on the base of the miniature high-temperature spinning machine; the conical twin-screw is formed by the engagement of a right conical screw and a left conical screw, and the right conical screw and the left conical screw are simultaneously Conical double-helix screw or conical single-helix screw, the cone angle is between 20° and 35°, and the helix rotation directions of the two screws are the same or opposite, that is, one is clockwise and the other is counterclockwise Direction, or both are clockwise, or both are counterclockwise; the installation angle of the two axes of the right conical screw and the left conical screw is equal to its conical angle; the right conical screw The center line of the two axis installation angles of the shaped screw and the left conical screw is perpendicular to the horizontal direction;

The feeding channel of the hinged barrel is equipped with an automatic feeding device, the automatic feeding device includes a motor and a feeding barrel, the feeding barrel is connected with the feed hole of the hinged barrel, and the motor is connected to the feeding barrel Connected, the automatic feeding device is an automatic feeding device that the motor drives the screw in the feeding barrel to rotate, and pushes the raw material to move forward. The rotating speed is 0~20r/min;

A valve is installed at the upper end of the discharge channel of the hinge-type barrel, and the valve is a stop valve; a filter screen is embedded in the lower end of the discharge channel, and the filter screen is 50-200 mesh, and the lower part of the filter screen is embedded with a spinneret; the hinge The barrel is connected with a heating block, and the heating block adopts a resistance wire copper block heater, so that the spinning temperature ranges from 50 to 500°C.

The heating device includes a heating block and a thermal insulation sleeve, the thermal insulation sleeve is wrapped on the hinged barrel, the heating block is a resistance wire copper block heater, and the heating block is connected to the rear end of the hinged barrel;

The operating table is connected to the upper end of the frame, the hinged barrel is connected to the side of the frame, the pressure sensor is fixed on the bottom of the frame, and connected to the bottom of the hinged barrel; the length of the conical twin-screw is 11- 15cm, the screw speed is 0-300r/min, and the pressure of the hinged barrel is between 10-300N.

Beneficial effect

A miniature high-temperature spinning machine of the utility model, due to the unique automatic feeding machine, the amount of raw materials entering the screw can be controlled, the metering pump is omitted, and the operation is more convenient. At the same time, its screw and valve structure are different from ordinary spinning Compared with the machine, it can stay in the screw for a longer time. The utility model not only has a good blending effect, but also only needs 10g-15g of resin to carry out experiments, which greatly saves raw materials. At the same time, the instrument uses a copper block heater so that the spinning temperature can reach up to 500°C. This device can not only save the amount of raw materials used in experiments and scientific research, but also has a good mixing effect. There is also a nitrogen filling protection system and airflow cooling system in the barrel, which is convenient for carrying out and simulating various processing experiments. The micro-device is convenient for small-dose experiments, is of great significance to the development and research of expensive materials and trace materials, and can save a lot of cost and reduce waste.

Description of drawings

Fig. 1 is the structural representation of a kind of miniature high-temperature spinning machine of the present utility model

Fig. 2 is a schematic diagram of the hinged barrel of the present invention

Fig. 3 is a schematic diagram of the discharge hole when the valve of the present invention is opened

Fig. 4 is a schematic diagram of the discharge hole when the valve of the utility model is closed

Among them: (1) is the operation table, (2) is the driving motor, (3) is the feeding device, (4) is the right conical screw, (5) is the left conical screw, (6) is the hinge material Cylinder, (7) heating block, (8) valve, (9) filter, (10) spinneret, (11) frame, (12) pressure sensor, (13) circulation channel , (14) is the discharge channel, (15) is the input shaft hole, (16) is the feed channel

Detailed ways

Below in conjunction with specific embodiment, further elaborate the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

As shown in Figure 1, a kind of miniature high-temperature spinning machine is characterized in that it mainly includes a frame (11), a hinged barrel (6), a conical twin screw, a heating device, and an automatic feeding device; the device Including console (1), driving motor (2), feeding device (3), right conical screw (4), left conical screw (5), hinged barrel (6), heating block (7) , valve (8), filter screen (9), spinneret (10), frame (11), pressure sensor (12), circulation channel (13), discharge channel (14), input shaft hole (15) , feeding channel (16); the operating platform (1) is installed on the top of the frame (11), and the driving motor (2) is installed on the bottom surface of the operating platform (1); the bracket (11 ) to fix the heating block (7); the front side of the heating block (7) fixes the barrel (10), and the barrel (6) has two tapered screw cavities inside, which are respectively installed The right conical screw (4) and the left conical screw (5), the upper ends of the right conical screw (4) and the left conical screw (5) are respectively connected to the drive motor (2) through gears, the There is a feeding channel (16) connected to the feeding device (3) above the barrel (6); the lower end of the barrel (6) has a discharging channel (14), and the discharging channel is equipped with a valve (8), Filter screen (9) and spinneret (10);

As shown in Figure 2, the hinge-type barrel (6) is composed of two symmetrical pieces with half cavities each. Channel (16), discharge channel (14) and circulation channel (13), the main body of the semi-cavity is a conical depression with the bottom facing up, and the longitudinal central cutting plane of the conical shape is consistent with the plane of the block, so The bottom of the conical shape has two semicircular grooves for the input shaft hole, the depth of the semicircular grooves for the input shaft hole is equal to the radius of the input shaft hole, and the upper side of the conical shape has a semicircular groove for the feeding channel. The depth of the semicircular groove of the feed channel is equal to the radius of the feed channel, and the other side of the conical shape is provided with a semicircular groove of the circulation pipe, and the depth of the semicircle groove of the circulation pipe is equal to the semicircle groove of the circulation pipe The upper end of the semicircular groove of the circulation pipe is connected to the upper part of the conical shape, and the lower end of the semicircular groove of the circulation pipe is connected to the lower part of the conical shape; the top of the conical shape has a discharge channel A semicircular groove, the depth of the semicircular groove of the discharge channel is equal to the radius of the semicircular groove of the discharge channel;

As shown in Figure 1, the heating device (7) includes a heating block and a thermal insulation sleeve, the thermal insulation sleeve is wrapped on the hinge-type material barrel, the heating block uses a resistance wire copper block heater, the heating block and the hinge-type material The rear end of the barrel (6) is connected; the automatic feeding device (3) includes a motor and a feeding barrel, the feeding barrel is connected to the feeding hole of the hinged barrel, and the motor is connected to the feeding barrel; the hinge The feeding channel (16) of the feed barrel (6) is equipped with an automatic feeding device (3), and the automatic feeding device is an automatic feeding device that drives the screw in the feeding barrel to rotate by a motor to push the raw material forward. The diameter of the screw is 10-20mm, the length-to-diameter ratio is 1:15-1:30, the speed of the motor is 0-20r/min; the console (1) is connected to the upper end of the frame (11), and the hinge-type barrel (6) Connected to the side of the frame (11), the pressure sensor (12) is fixed on the bottom of the frame, and connected to the bottom of the hinged barrel; the length of the conical twin-screw is 11-15 cm, and the screw speed 0-300r/min, and the pressure of the hinged barrel is between 10-300N;

As shown in Figure 3, it is a schematic diagram of the discharge hole when the valve is opened. A valve (8) is installed on the upper end of the discharge channel of the hinged barrel, and the valve is a stop valve; a filter screen (9) is embedded in the lower end of the discharge channel. , the filter screen is 50-200 mesh, and the lower section of the filter screen is embedded in the spinneret (10); the hinged barrel is connected to the heating block, and the heating block adopts a resistance wire copper block heater, so that the spinning temperature range is 50-200 500°C;

As shown in Figure 4, it is a schematic diagram of the discharge hole when the valve is closed.

Claims (4)

1. A miniature high-temperature spinning machine, which is characterized in that it mainly includes a frame (11), a hinged barrel (6), a conical twin screw, a heating device and an automatic feeding device (3); The hinged barrel (6) is composed of two symmetrical blocks with half cavities each. When the two blocks are combined, they form the barrel cavity, the input shaft hole (15), the feeding channel (16), the outlet material channel (14) and circulation channel (13), the main body of the semi-cavity is a conical depression facing upwards, the longitudinal central cutting plane of the conical shape is consistent with the plane of the block, and the bottom of the conical shape is open There are two semicircular grooves for the input shaft hole, the depth of the semicircular groove of the input shaft hole is equal to the radius of the input shaft hole, and the upper side of the conical shape is provided with a semicircular groove for the feeding channel, and the semicircular groove for the feeding channel is The depth of the groove is equal to the radius of the feed channel, and the other side of the conical shape is provided with a semicircular groove of the circulation pipe, and the depth of the semicircular groove of the circulation pipe is equal to the radius of the semicircle groove of the circulation pipe. The upper end of the semicircular groove of the pipe is connected to the upper part of the conical shape, and the lower end of the semicircular groove of the circulation pipe is connected to the lower part of the conical shape; the top of the conical shape has a semicircular groove for the discharge channel, and the The depth of the semicircular groove of the discharge channel is equal to the radius of the semicircular groove of the discharge channel; the lower end of the hinged barrel is connected to the pressure sensor (12); The right conical screw (4) and the left conical screw (5) are installed in the barrel cavity of the combined hinged barrel (6), and the input shaft of the conical twin-screw passes through The input shaft hole (15), the driving motor (2) driving the input shaft is installed on the base of the miniature high-temperature spinning machine; the conical twin-screw consists of a right conical screw (4) and a left conical screw (5) Engagement structure, the right conical screw (4) and the left conical screw (5) are both conical double helix screws or conical single helix screws, and the conical angle is between 20° and 35° , and the helical rotation directions of the two screws are the same or opposite, that is, one is clockwise and the other is counterclockwise, or both are clockwise, or both are counterclockwise; The installation angle between the two axes of the right conical screw (4) and the left conical screw (5) is equal to its conical angle; the center of the installation angle between the two axes of the right conical screw and the left conical screw The line is perpendicular to the horizontal direction; The heating device (7) includes a heating block and a thermal insulation sleeve. The thermal insulation sleeve is wrapped on the hinged barrel. The heating block uses a resistance wire copper block heater. The heating block and the rear end of the hinged barrel (6) connected; The automatic feeding device (3) includes a motor and a feeding barrel, the feeding barrel is connected to the feeding hole of the hinged barrel, and the motor is connected to the feeding barrel; The operating platform (1) is connected to the upper end of the frame (11), the hinged barrel (6) is connected to the side of the frame (11), the pressure sensor (12) is fixed at the bottom of the frame, and is connected to the hinged material connected to the bottom of the barrel. 2. A kind of miniature high-temperature spinning machine according to claim 1, characterized in that, the length of the conical twin-screw is 11 to 15 cm, the screw speed is 0 to 300 r/min, and the hinged barrel The withstand pressure is between 10 and 300N. 3. A miniature high-temperature spinning machine according to claim 1, characterized in that, the feeding channel (16) of the hinged barrel (6) is equipped with an automatic feeding device (3), and the The automatic feeding device is an automatic feeding device that drives the screw in the feeding barrel to rotate by the motor to push the raw material forward. The diameter of the screw is 10-20mm, the length-to-diameter ratio is 1:15-1:30, and the speed of the motor is 0-20mm. 20r/min. 4. A miniature high-temperature spinning machine according to claim 1, characterized in that a valve (8) is installed at the upper end of the discharge passage of the hinged barrel, and the valve is a stop valve; the lower end of the discharge passage is Embed a filter screen (9), the filter screen is 50-200 mesh, and the lower part of the filter screen is embedded in a spinneret (10); the hinged barrel is connected to a heating block, and the heating block uses a resistance wire copper block heater, so that the spinning The silk temperature ranges from 50 to 500°C.