JPS59136656A - Combined biaxial kneading and testing machine - Google Patents

Abstract

PURPOSE:To perform biaxial kneading and testing as desired without complicating constitution by controlling the communication between a hollow pipe for feeding and discharging of a sample and a rotor chamber by making use of the roof-shaped partition wall in the bottom of the adjacent rotor rotating chamber and controlling the feeding and discharging of the sample by means of a feed screw. CONSTITUTION:A hole 36 having a circular cone-shaped top end is provided in the roof-shaped partition wall in the bottom of right and left rotor chambers 20', 20'' for the biaxial kneading formed in upper and lower housings 16, 18 of cylinders and a hollow pipe 3 provided with the circular cone-shaped top end coninciding with said circular cone-shaped part is made freely turnable relatively with the hole 36. When the pipe 38 is turned, the communication and non-communication between the diametrally symmetrical holes 42', 42'' and the holes 44', 44'' of the cylinders 20', 20'' in the roof-shaped partition wall part are controlled. On the other hand, the feed and discharge of a sample are controlled according to the rotating direction of the sample feed screw 46 in the pipe 38. The biaxial kneading and simultaneous testing are thus accomplished as desired without complicating the constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to freely controlling the extraction of a sample in a kneading and processability tester for polymeric materials to freely perform kneading and testing thereof.

The processability of polymeric materials is said to be the adaptability of the material during the process of supplying raw materials to a molding machine, plasticizing them, giving them a shape, holding them, and taking them out. The viscosity is expressed using a viscometer or the rotational force during kneading, which changes depending on the viscosity, by changing the conditions that facilitate processing, such as the temperature during melting and solidification.

Therefore, a feature of this type of equipment is that it can perform tasks such as kneading at the same time as testing.

However, until now, the kneading machine had only one material inlet in the upper part of the hopper, and after the material was injected by the piston feed screw and other regular devices, the material was not taken out or taken out, but at a constant volume and atmospheric pressure or It was sealed under vacuum and kneaded for a predetermined period of time while detecting and monitoring the viscosity, etc., and only ended the crosstalk with optimum characteristics.

The kneading chamber must be sealed to keep the pressure constant during kneading, making it difficult to take samples in and out.Due to the structure of the kneading machine itself, properties such as viscosity detected can only be averaged, and the local components of the mixing cape, It has been difficult to extract and inspect changes in properties such as weight, viscosity, temperature, pressure, and distribution.

Therefore, a certain amount of time is required for kneading, and the types of characteristic item detection are also limited. In order to solve this drawback, the present invention provides a conduit with a feed screw for material extraction in addition to the conventional upper specimen normal-sized opening, and by selecting the opening/closing of the opening and the rotation direction of the feed screw, the sample can be While controlling the volume of the material at any time by freeing the extraction and input, it is easy to extract and input the sample and measure properties other than viscosity and local homogeneity using other instruments.
- Or by supplementing with arbitrary stabilizers, plasticizers, fillers, lubricant catalysts, etc., it is possible to easily detect the effects of the components on the properties.

In addition, it is possible to install multiple such sample extraction/input devices by selecting the rotating direction of the feed screw to enable sample injection and extraction at the same time, and to use a continuous mixer or sample injection port that continuously supplies and kneads the sample to finish the sample. This system connects and closes the sample extraction port and circulates the material inside the mixing machine to complete the mixing process, and also doubles the types of processing and testing by adding other testing equipment and processing equipment to the circulation path. It is.

The preferred present invention will be described below with reference to the drawings.The two-shaft kneading machine has a gear box for driving the kneading machine, which is connected to these H1 bodies, and is connected to a dynamometer-type motor capable of measuring rotational force to measure the viscosity of the material. The kneading machine uses the upper and lower cylinder frames 16. to clean the interior.
It is removably connected to an outer gear box 14 which is divided into 18 parts. Two cylinder holes 20' and 20'' are provided inside the cylinder frame, and rotors 22' and 22'' are placed therein, respectively, and the rotors 22' and 22'' are rotated at different speeds in opposite directions. Therefore, when the material is put inside, the material is stirred and kneaded by shearing force, and the shape of the blade of the rotor varies, but as an example, the material is twisted in opposite directions in the axial direction. There are also those that are vibrated and transferred around the axial center to help stir.
The underframes 16 and 18 have a fluid circulation path inside to control the temperature of the frame, and normally during cross-mixing, heating facilitates the melting of polymers and assists in the kneading action. Usually, the temperature and pressure are measured. An input port 24 such as a hopper for inputting materials is provided at the center of the top of the cylinder 18, and a hole 26 is provided at the bottom of the cylinder 18 to form a cylinder hole 22'.

Connect near the axial center of 22'' and feed the material.

In particular, in order to assist in material injection, the structure is such that an input port with a material press-in device can be attached to the top using a piston or a feed screw. In addition, a sealing lid 28 having an exhaust pipe 32 provided at the top of the input port 24 may be sealed with a gasket or other means.

Moreover, in the present invention, as shown in FIG. 2, a conical tip-shaped hole 36 is provided in the middle of the ridge-shaped partition wall 34 on the bottom surface of the center of the longitudinal axis of the two cylinder holes 22', 22'. A closely fitting hollow tube 38 is inserted, the tip of which is conical and corresponds to the hole 36, and a diametrically symmetrical hole 42', 4 above it.
When 2' is perpendicular to the rotor axis, openings 44' and 44'' that communicate the hollow tube and the rotor chamber with respect to these two holes are in the partition wall 3.
It is located in 4. Therefore, the opening 42' of the hollow tube 38
, 42' and the wall openings 44', 44'' coincide, the interior of the hollow tube communicates with the rotor chamber, and when the openings 42', 42' are perpendicular to the bulkhead 34, the tube 38 and the rotor Muro can be contacted.

A screw shaft 46 for feeding the sample is placed inside the hollow tube 38, and in Figure 0, the screw is pulled out downward for illustration purposes, but when the screw is rotated, the hollow tube is fully pushed up (pushed up) and the screw rotates in the direction of rotation. Extraction or injection of the sample is controlled by opening and closing the openings 42', 42'' and 44, 44.

In the present invention, the rotor chamber and the hollow tube are isolated or communicated with each other by the rotational position of the hollow tube 38 in the partition wall 34 of the cylinder, and the extraction or injection of the sample can be controlled by the rotational direction of the sample feed screw in the hollow tube. The rotor chamber and this hollow tube can be separated from each other to mix the sample, or the two can be communicated to extract the sample and examine its characteristics as described above, or another component can be injected to determine the characteristics of the sample. It is possible to detect changes in In addition, it is also possible to connect such a sample extraction device to the sample input port on the top surface, or to place one or more sample extraction devices in succession to circulate, knead, or test the sample. The type of work that can be done has been doubled compared to a device with a large number of input rows, and the degree of freedom in testing is essential.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of only the test and cross-connection J Junshin Misaki room in which the present invention was implemented. Figure 2 is a cross-sectional elevation view of the cylinder. In the figure: 10 Kneading chamber 12 Bearing standout 14 Gear box 16 Upper stile of cylinder 11 18 Lower stile of cylinder 11 20, 20' Left and right cylinders 22', 22
' Left and right rotors 24 Inlet port 26 Inlet bottom hole 28 Sealing lid 32 Exhaust pipe 34
Ridge-shaped septum 36 Hole 38 at the conical tip in the septum Hollow tube 40 that fits into the hole 36 Diametrically symmetrical hole 4 on the conical tip of the hollow tube 42', 42# Hollow tube at the conical tip
4', 44'' two holes in septum 34 with holes 42',
42" at a certain position. 46 Sample feed screw in hollow tube 38 Applicant: Touga Seimitsu Kogyo Co., Ltd.

Claims (1)

[Claims] 1) Rotation of a conical tip having two diametrically opposed openings at the tip and a sample feed screw shaft along the tube axis using a ridge-shaped partition wall between the lower bottoms of adjacent rotor rotation chambers. A sample consisting of a freely movable sample extraction inlet tube and two openings in a rotor partition wall that align with the two openings at the end of the sample extraction tube at a predetermined rotation angle and communicate the inside of the extraction inlet tube and the rotor chamber. A device capable of freely controlling the extraction and entry is provided, and the extraction and entry of the sample can be freely controlled by rotating the sample extraction entry tube and selecting the relative position between the opening and the opening of the rotor partition wall and the rotational direction of the sample feed screw. Features: 2-shaft kneading and testing machine. 2) When several devices are installed that can freely control sample extraction and input, one is used for injection and the other is used for extraction, so that continuous simultaneous or intermittent sample input and output can be freely controlled. 2-shaft kneading and testing machine.