JPS62129137A - Apparatus for extruding flowable stock material - Google Patents

Abstract

PURPOSE:To obtain the titled apparatus for granulating a synthetic resin or food so as to have a predetermined shape and easy to clean, by cutting the stock material extruded from a slit shaped nozzle orifice by a punched belt slid with the nozzle orifice. CONSTITUTION:The stock material supplied to a heating type nozzle 4 to be heated is heated to required temp. and extruded from a slit shaped nozzle orifices 41 each having the length corresponding to a drilling width and subsequently extruded from the holes 23 of of a punched belt 2 arranged in a shutter like state slid with the nozzle orifices to be fallen on a conveyor belt 1. At this time, the shape of a granulated substance can be determined by the size of each hole 23, the passing speed of the belt 2 and the extrusion speed of the stock material. Both sides of the punched belt are opened and the cleaning and replacement of the nozzle or belt can be easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an apparatus for continuously extruding various fluid raw materials such as synthetic resins, paints, and foods into predetermined granules.

BACKGROUND ART PRIOR TECHNIQUES AND THEIR PROBLEMS Japanese Patent Application Laid-open No. 1981-81115 discloses an apparatus for extruding various fluid raw materials into granules. This involves fixing a sealed inner cylindrical container with many holes punched above the endless belt that is being driven, fitting the cylindrical container with many holes punching around the outer periphery of this cylindrical container, and then When the fluid material stored in the inner cylindrical container is rotated, when both the inner and outer holes are opened, it is extruded to the outside, formed into granules, and conveyed by a belt.

However, this type of extrusion device that fits inside and outside the cylinder usually has an inner diameter of 1
It has a relatively small diameter of 50 to 300 m, and in order to prevent stringiness from occurring in the granular material to be molded, it is necessary to minimize the gap between the inner and outer cylinders and fit them in a telescopic manner.

For this reason, during maintenance, if the viscosity of the raw material increases at room temperature, it is necessary to heat the inner and outer cylinders until the raw material reaches the required viscosity.Furthermore, since there is little clearance between the inner and outer cylinders, it is difficult to pull out the outer cylinder from the inner cylinder. This will require a lot of work. Furthermore, since the diameter of the cylindrical container is small, it is difficult to insert a means for heating the raw material into the cylindrical container. Furthermore, in order to eliminate the stringiness of the molded material, it is advantageous to make the outer cylindrical container as thin as possible, but there is a limit to how thin the outer cylindrical container can be made due to its shape and relationship with the inner cylinder. .

The present invention aims to simplify manufacturing and maintenance.

Solution to the problem A perforated endless belt 6 is stretched over a driven endless belt conveying means for a certain length along the longitudinal direction of the conveying means, and the perforated belt is positioned relative to or relative to the belt of the conveying means. In addition to being driven non-relatively, a heating nozzle is inserted from the side of this perforated belt and is in contact with the back surface of the perforated belt. The raw material pushed out from the nozzle hole toward the back of the perforated belt
E17, the endless belt is cut into fixed quantities through the perforations and falls onto a conveying means, where the raw material is continuously extruded and granulated.

Example The present invention will be explained below based on embodiments shown in the drawings.

In the figure, 1 is a steel belt such as a steel belt cooler, and the extrusion device A of the present invention is disposed above the starting leakage part of the steel belt 1. This device A may be installed on the main body frame of a steel belt cooler or other conveyance means, or
It shall be installed on another fixed body. This extrusion device A has an endless steel belt 2, has rolls 3 (drums) or bools on both sides, and stretches the steel belt 2 between the rolls 3 and 3, and has an outward path and a return path of the belt, i.e. A heated nozzle 4 is provided between the opposing rolls 3 and 3 in the middle of the top and bottom of the belt, so as to contact the back surface of the lower belt (ongoing side) 21. A large number of holes 23 are bored in each of the holes 23. At this time, the diameter of the pores is determined according to the size of the product to be granulated, and a large number of holes are perforated at a fixed pitch in the width direction of the belt 2, and also in the belt and driving direction at a pitch that is the same as or different from the width direction pitch. It is something that Then, either of these rolls is driven at a variable speed by a drive device, and desirably, the forward side of the perforated endless belt 2 is driven in the same direction and at the same speed or true speed as the belt of the conveying means. Furthermore, this belt 2 is connected to a heating means 5 and a scraper 6 as required.
The belt 2 is heated to an appropriate temperature so that the viscous raw material can be easily extruded from the holes n of the belt 2 with the required fluidity, and all the raw materials adhering to the surface of the belt 2 are removed by the scraper 6. Scrape and clean the outer surface of the belt. The heating type nozzle 4 is configured to continuously feed the fluid raw material supplied to the nozzle 4 to a constant thickness through a slit-shaped nozzle opening 41 having a length equal to or at least the width of the perforated endless belt 2. If the raw material supplied to this nozzle 4 is viscous and becomes fluid when heated to a certain temperature, the entire nozzle is heated. Although it is possible to incorporate a Na heater inside the nozzle 4,
The heat medium flow path 42 is formed in a zigzag shape or in a multi-row shape,
A heat medium such as thermo oil or steam is passed through the flow path 42 to completely heat the raw material supplied into the nozzle through the nozzle.

Next, the operation of the extrusion apparatus of the present invention will be explained.

The steel belt 1 of the conveying means and the perforated steel belt 2 of the extrusion device are driven. At this time, the outbound sides of both belts are made to run in the same direction, but their speeds are made to be the same or different. and heating device 5 for belt 2 if necessary.
When the raw material is supplied to the nozzle 4 while heating the heated nozzle 4, the raw material is heated to the required temperature by the heating medium flowing through the nozzle, and the desired fluidity can be maintained.
It is pushed out from the slit-shaped nozzle opening 41 onto the back surface of the perforated endless belt that is in contact with the nozzle opening 41. At this time, the raw material extruded from the nozzle opening by a perforated belt disposed like a shutter that slides against the nozzle opening is extruded onto the conveying belt through the holes in the belt. Since this belt 2 is driven, the raw material is pushed out only when the hole passage of this belt 2 passes through the slit-like nozzle nozzle 41, and at other times the nozzle nozzle is closed. Therefore, the opening time of the nozzle opening is adjusted depending on the speed of the hole % passing through the nozzle opening, and the size and shape of the extruded raw material are substantially determined together with the extrusion speed of the raw material.

Note that both sides of this perforated belt 2 are open.
Maintenance is performed from this open side of the belt.

Effects of the Invention According to the present invention, an endless belt (with many holes made above the belt as a conveying means) is tensioned and driven, and a slit-shaped nozzle opening is pressed against the back side of the perforated belt on the forward path. Because the nozzle is installed, the raw material supplied to the nozzle can be heated even if it is a viscous substance, and it can be easily extruded while maintaining the desired fluidity. This belt acts as an opening/closing shutter for the nozzle opening, making it easier to extrude the raw material into a predetermined shape. Moreover, since both sides of this perforated belt are open, even when cleaning or replacing the heating nozzle or perforated belt, the belt can be removed by loosening one of the rollers on which the belt is stretched. This has the advantage that the work can be done easily and quickly.

[Brief explanation of drawings]

FIG. 1 is a front view of the mill, FIG. 2 is a plan view, FIG. 3 is an explanatory diagram of a heated nozzle, and FIG. 4 is an explanatory diagram of extrusion. 1 is a steel belt as a conveyance means, 2 is a perforated endless belt, 3 is a roll, 4 is a heated nozzle, 41
is a nozzle opening, 5 is a heating device, and 6 is a scraper. Patent applicant: Hiroshi Masumoto - Agent: Ike 1) Haka Mikio (1 person) Figure 4

Claims (1)

[Claims] A perforated endless belt of a required length is freely drivably arranged above and along the steel belt as a conveying means, and a heated nozzle is used to supply the raw material with the nozzle opening in contact with the perforated endless belt on the back side of the forward path. The nozzle opening is formed into a slit, and the raw material extruded from the slit-shaped nozzle opening is cut by a driven perforated endless belt and granulated onto a conveying belt. Extrusion equipment for fluid raw materials.