CN203110301U - Volume-stretching rheological plasticized transport equipment for macromolecular-material slant-face rollers - Google Patents

Abstract

The utility model discloses a polymer material inclined plane roller volume stretching rheological plasticization transport equipment. Utilizing the eccentricity of the inner hole of the stator and the rotor, the rollers are placed in multiple inclined grooves evenly distributed along the circumference of the rotor. The axis of the rollers is parallel to the axis of the rotor and the surface of the rollers is tangent to the slope of the inclined grooves of the rotor. The rotor rotates At the same time, under the action of the resistance of the material and the reverse thrust of the inclined surface of the rotor inclined groove, the rollers make a planetary roll tangent to the inner surface of the stator, and the materials in the space surrounded by the stator, rotor and rollers will rotate with the rotor due to their volume. Periodic changes are dominated by volumetric tensile deformation and are transported by plasticization. The equipment structure unit to realize this method is the inclined plane roller plasticizing transport unit, which can be combined with various screw extrusion units or various plunger injection units to form the inclined plane of the extruder or injection machine. Roller plasticizing injection unit.

Description

Polymer Material Inclined Roller Volume Elongational Rheological Plasticization Transportation Equipment

technical field

The utility model relates to a polymer material plasticizing processing method and equipment, in particular to a polymer material slope roller volume stretching rheological plasticizing transport equipment.

technical background

At present, the plasticizing processing of polymer materials mainly adopts the plasticizing transportation method based on shear deformation, and the equipment used is mainly screw machinery. The screw machine relies on the dragging effect on the material when the screw rotates during the plasticizing process, and the velocity gradient of the material is perpendicular to its flow deformation direction. This processing method usually has problems such as low output, high pressure fluctuations, large temperature fluctuations, and large output fluctuations, which directly lead to defects such as product size fluctuations, performance degradation, and narrow adaptability to materials. Through certain theoretical research, a series of improvements have been made to the conventional screw. The screw machine is a plasticizing and transporting device based on shear rheology. Its plasticizing and transporting ability still strongly depends on the physical properties of the material. Its plasticizing There is limited room for improvement in transport performance.

The dynamic plasticizing molding processing method and equipment of polymer materials are innovative plasticizing processing methods and equipment based on the above problems. Different from changing the length-to-diameter ratio of the screw and changing the structure of the screw to optimize the plasticizing process, the dynamic plasticizing molding method of polymer materials is a new plasticizing processing method based on dynamic shear rheology. The whole process of plastic plasticizing processing. Compared with traditional screw equipment, this method shortens the thermomechanical history, reduces processing energy consumption, improves product performance and enhances the adaptability to materials. However, the essence of this method is still based on the shear rheological screw plasticizing transportation equipment, which cannot fundamentally solve the problem that the plasticizing transportation capacity depends on the friction between the material and the surface of the metal barrel and the internal friction of the material. Therefore, the space for reducing the energy consumption of plasticizing transportation and improving the capacity of plasticizing transportation is also very limited.

The polymer blade plasticizing extruder is a polymer plasticizing transportation equipment based on extensional rheology. The plasticizing transportation mechanism of this equipment is a new plasticizing transportation under the action of extensional rheology. The method has the characteristics of short thermomechanical course of materials, low energy consumption, wide adaptability and small volume. However, due to its relatively complex structure, equipment installation is more complicated.

Utility model content

The purpose of the utility model is to provide a volume elongational rheological plasticization transportation device for inclined rollers to solve the problems of high energy consumption, low efficiency and poor adaptability to materials during the processing of polymer materials.

The utility model purpose is realized through the following technical solutions:

Polymer material inclined roller volume extensional rheological plasticization transportation equipment: it is composed of one or more inclined roller plasticization transportation units, and the inclined roller plasticization transportation unit is mainly composed of a hollow cylindrical inner cavity. Composed of stator, cylindrical roller, cylindrical rotor, first baffle and second baffle, the rotor is placed in the inner cavity of the stator and is eccentrically arranged with the stator, and multiple rollers are evenly distributed in the inclined groove opened on the surface of the rotor In the groove, the first baffle plate and the second baffle plate are respectively arranged on both sides of the stator; the first baffle plate or the second baffle plate is provided with a feeding gap or a discharge port; The first baffle plate of one inclined roller plasticizing transport unit is connected with the second baffle plate of the latter inclined roller plasticizing transport unit.

The eccentricity between the rotor and the stator is greater than 0 and smaller than the difference between the radius of the inner cavity of the stator and the radius of the rotor. Further, the eccentricity between the rotor and the stator is larger than half of the difference between the radius of the inner cavity of the stator and the radius of the rotor, and smaller than the difference between the radius of the inner cavity of the stator and the radius of the rotor.

More than 3 slope grooves are evenly distributed along the circumference on the rotor.

When the rotor of the utility model rotates, under the action of the resistance of the material and the reverse thrust of the slope of the rotor slope groove, the rollers make a planetary roll tangent to the inner surface of the stator; the inner surface of the stator, the outer surface of the rotor, the roller and two gear The plate forms a space volume, and the space volume changes periodically from small to large and then from large to small during the planetary rolling process of the rollers tangent to the inner surface of the stator; when the volume changes from small to large, the continuous flow of materials Incorporating, when the volume of the space changes from large to small, the material is ground, compacted, and exhausted under the main action of normal stress, and at the same time, it is melted, plasticized and excluded under the auxiliary action of external heating from the stator, so as to realize the plasticization of the material transport process. Multiple inclined roller plasticizing transport units can be stacked in series to form an extruder, and the inclined roller plasticizing transport unit can be combined with various screw extrusion units or various plunger injection units to form an extruder or injection machine Inclined roller plasticizing injection device.

The utility model adopts the transportation method and equipment of inclined-plane roller volume elongation rheological plasticization, and solves the problem that the screw plasticization transportation equipment mainly relies on the friction force between the material and the surface of the barrel and the internal friction force of the material for processing. Compared with the traditional screw plasticizing transportation technology and equipment, the method has the following advantages:

1. The thermomechanical process experienced in the plasticizing transportation process is greatly shortened, and the energy consumption of plasticizing transportation is reduced

2. The plasticizing and transporting process is dominated by the volumetric tensile deformation with periodic changes in volume. It has wide adaptability to materials and high plasticizing and transporting efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of a volumetric elongational rheological plasticization transportation device for inclined rollers of polymer materials;

Fig. 2 is A-A direction sectional view in Fig. 1;

Fig. 3 is a structural schematic diagram of the application of the inclined roller volumetric elongational rheological plastic transport equipment of polymer material in Example 1 to an extruder;

Fig. 4 is the sectional view of B-B direction in Fig. 3;

Fig. 5 is a schematic structural view of the screw inclined roller plasticizing extruder of Example 2 applied to the injection device.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings and embodiments, but the scope of protection claimed by the utility model is not limited to the scope expressed in the embodiments.

Example 1

Referring to Fig. 1 and Fig. 2, the polymer material inclined roller volume elongational rheological plasticization transportation equipment is an inclined roller plasticization transportation unit, which is mainly composed of a hollow stator 1 with a cylindrical inner cavity, placed in the stator 1 The cylindrical rotor 3 in the cavity and eccentric with the stator 1, the roller 2 arranged in the inclined groove 4 of the rotor 3, and the first baffle 5 and the second baffle 6 arranged on both sides of the rotor, etc. The rotor 3 is installed eccentrically in the hollow stator 1. The eccentricity between the rotor 3 and the stator 1 can be adjusted, and its value is greater than 0 and smaller than the difference between the radius of the inner cavity of the stator and the radius of the rotor. One-half of the difference in radius is less than the difference between the radius of the inner cavity of the stator and the radius of the rotor. The rollers 2 are installed in more than three sloped grooves 4 evenly distributed along the circumference of the rotor, the axis of the rollers 2 is parallel to the axis of the rotor 3 and the surface of the rollers 2 is tangent to the slope of the sloped grooves 4 of the rotor 3 . When the rotor 3 rotates counterclockwise, under the action of the resistance of the material and the reverse thrust of the inclined plane groove 4 of the rotor 3, the roller 2 makes a planetary roll tangent to the inner surface of the stator 1, so that the inner surface of the stator 1 , the outer surface of the rotor 3, the roller 2, the first baffle 5 and the second baffle 6 form a space volume, and the volume changes periodically. When the volume changes from small to large, the material can be taken in through the feeding gap A on the first baffle 5, and the volume changes from large to small, and the material is ground, compacted, exhausted and plasticized under the main action of normal stress, and at the same time Plasticized and melted under the auxiliary effect of external heating from the stator, and discharged from the discharge port B on the second baffle plate 6 .

Example 2

As shown in Figure 3 and Figure 4, the screw inclined roller plasticizing extruder is mainly composed of screw extrusion unit I, inclined roller plasticizing unit II, III, IV and drive shaft 1, hopper 2, splitter 5 and transition Set of 6 compositions. Among them, the screw extrusion unit I includes a screw 3 and a barrel 4; the screw extrusion unit I and the inclined roller plasticizing units II, III, and IVv are superimposed and installed in series; that is, the screw extrusion unit I and the inclined roller plasticizing units II, III and IV are set sequentially from right to left. The rotors of the inclined roller plasticizing units II, III, and IV are coaxially fixedly connected with the screw rod 3, and the screw rod 3 is coaxially fixedly connected with the drive shaft 1. The hopper 2 is fixed on the barrel 4 of the screw extrusion unit I, the first baffle of the inclined roller plasticizing unit II is concentrically fixedly connected with the barrel 4 of the screw extrusion unit I, and the first baffle of the inclined roller plasticizing unit III A baffle is concentrically and fixedly connected with the second baffle of the inclined roller plasticizing unit II, and the first baffle of the inclined roller plasticizing unit IV is concentrically fixedly connected with the second baffle of the inclined roller plasticizing unit III, and the transition The sleeve 6 is coaxially and fixedly connected with the second baffle plate of the inclined roller plasticizing unit IV. The eccentric direction of the stator of the ramped roller plasticizing unit II relative to the rotor is opposite to the eccentric direction of the stator of the ramped roller plasticizing unit III relative to the rotor, and the eccentric direction of the stator of the ramped roller plasticizing unit IV relative to the rotor is opposite to that of the ramp The stator of the roller plasticizing unit III is eccentrically opposite to the rotor. The flow divider 5 is placed in the circular cavity of the transition sleeve 6 and coaxially fixedly connected with the rotor of the inclined roller plasticizing unit IV. The outlet on the second baffle of the inclined roller plasticizing unit II communicates with the feed inlet on the first baffle of the inclined roller plasticizing unit III, and the second baffle of the inclined roller plasticizing unit III The outlet on the top communicates with the inlet on the first baffle of the inclined roller plasticizing unit IV. When the drive shaft 1 drives the screw of the screw extrusion unit I and the rotors of the plasticizing units II, III, and IV of the inclined rollers to rotate, the materials from the hopper 2 are brought into the screw extrusion unit I, and enter the inclined rollers in turn after being plasticized. Plasticizing units II, III, and IV are further plasticized and homogenized, extruded through a die connected to the transition sleeve 6, cooled, and shaped to obtain a product.

Example 3

As shown in Figure 5, the inclined roller plasticizing injection device is mainly composed of a full inclined roller plasticizing extruder I, a plunger injection unit II and a collector 1; among them, the full inclined roller plasticizing extruder I The structure and working principle are completely the same as the plasticizing extruder with screw inclined plane and roller in Example 2; the plunger injection unit 11 is mainly composed of injection cylinder 2 , injection piston 3 , injection barrel 4 and nozzle 5 . The feed end face of the material collector 1 is fixedly connected with the discharge end face on the transition sleeve 6 (see Figures 3 and 4) of the fully inclined roller plasticizing extruder 1, and the discharge end face of the material collector 1 is injected with the plunger. The feed end face of the injection cylinder 4 of unit II is fixedly connected. The melt plasticized by the fully inclined roller plasticizing extruder I enters the injection cylinder 4 of the plunger injection unit II through the collector 1, and the injection piston 3 of the plunger injection unit II is under the pressure of the melt Retreat, when the storage volume in the injection barrel 4 of the plunger injection unit II reaches the metering value required by the injection product, the full-slope roller plasticizing extruder I stops plasticizing, and the plasticizing metering process of the injection machine ends. After the injection machine completes the mold filling and pressure maintaining processes, the full-slope roller plasticizing extruder I starts plasticizing during the cooling stage of the product, and the injection machine starts a new cycle of product molding.

Claims (4)

1. macromolecular material inclined-plane roller volume draft flowing deformation plastifies conveying equipment, it is characterized in that: transport unit combination by one or more inclined-plane roller plasticizing and constitute, roller plasticizing in described inclined-plane transports the unit mainly by the hollow stator (1) of cylindrical cavity, cylindrical rollers (2), cylindrical rotor (3), first baffle plate (5) and second baffle (6) constitute, its rotor (3) places stator (1) inner chamber and arranges with stator (1) is eccentric, a plurality of rollers are uniformly distributed in the inclined-plane groove (4) that is opened on the rotor surface, and stator (1) both sides are established first baffle plate (5) and second baffle (6) respectively; First baffle plate (5) or second baffle (6) are provided with charging breach or discharging opening; Rollers plasticizing in a plurality of inclined-planes transports first baffle plate (5) that previous inclined-plane roller plasticizing in the unit transports the unit and plastifies the second baffle (6) that transports the unit with a back inclined-plane roller and be connected.

2. equipment according to claim 1 is characterized in that: the offset (e) of described rotor (3) and stator (1) is greater than 0 poor less than stator (1) inner chamber radius and rotor (3) radius.

3. equipment according to claim 1 is characterized in that: the offset of described rotor and stator (e) is greater than 1/2nd of the difference of bore of stator radius and rotor radius, poor less than bore of stator radius and rotor radius.

4. equipment according to claim 1 is characterized in that: evenly distribute at rotor (3) upper edge circumference and offer 3 with ramp groove (4).

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