JPS6129023Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air wiper device that can be applied to a pellet production device using a strand cut method.

FIG. 1 is a side view showing the entire conventional pellet manufacturing equipment, in which 1 is an extruder, 2 is a cooling water tank, 3 is an air wiper device, 4 is a pelletizer, and 5 is a vibrating sieve, which are as shown in the figure. It is located. The resin discharged from the extruder 1 enters the cooling water tank 2 in the form of strands S, where it is cooled and solidified, drained by an air wiper device 3, cut into pellets by a pelletizer 4, and supplied to a vibrating sieve 5.

However, in the device of Fig. 1, the strand S
When passing the strands S through the air wiper device 3, the strands S are passed manually from the inlet hole 6 to the outlet hole 7, but several hundred strands S with a surface temperature of about 50 to 100°C are passed through the air wiper device 3. It was an extremely difficult task to handle this.

In addition, the air wiper device 3 is provided with a duct 9 connected to the blower 8 in order to remove moisture from the strand S, but since the air outlet 10 is a small hole, the production volume of the pellet manufacturing device is increased. At this time, the air wiper device 3 was unable to completely remove water due to insufficient capacity.

The present invention was proposed to solve the above-mentioned conventional drawbacks, and by forming an opening at a position facing the strand according to the running condition of the strand, threading the strand is facilitated.
Another object of the present invention is to provide an air wiper device that improves the working environment and can easily respond to increased productivity of pellet manufacturing equipment.

An embodiment of the present invention will be explained below with reference to the drawings. Fig. 2 is an overall view of a pellet manufacturing device showing an embodiment of the invention, Fig. 3 is a front view of the same air wiper device, and Fig. 4 is similar to Fig. 3. 5 is a sectional view showing the splash prevention plate. In FIG. 2, 1 is an extruder, 2 is a cooling water tank, 4 is a pelletizer, 5 is a vibrating sieve, and S is a strand, which are the same as those in FIG.

Next, to explain the differences from the conventional one, 21
is an air wiper device, which is composed of the following parts. That is, 22 is a side plate, which has an inclined opening 23 corresponding to the running state of the strand S. 24 is an upper duct, which has a slit-shaped nozzle 25 formed in the width (W) direction of the strand S, and is connected to a fan-shaped guide 26 on the same side plate 22 side, and to a branch duct 27 on the opposite side plate side. Further, in this embodiment, three upper ducts 24 are shown. In addition,
The air wiper device 21 may be retracted in a direction perpendicular to the strand S, or may be retracted by rotating around one of the legs of the device.

28 is a lower duct, which, like the upper duct 24, is connected to a nozzle 29, a fan-shaped guide 30, and a branch duct 31. A support plate 32 forms a space 34 together with the bottom plate 33, integrates bosses 35 and 36 by welding, etc., and rotatably supports the upper duct 24 and the lower duct 28. 37 is an oil seal, and 38 and 39 are bearings. 40 again
A main duct is connected to the blower 41 and supplies pressurized air to the upper duct 24 and the lower duct 28.

Next, 42 is an entrance guide roll, and 43 is an intermediate guide roll. Reference numeral 44 denotes an outlet guide roll, which can be rotated in the direction of arrow B when threading the strand S. Reference numeral 45 denotes a splash prevention plate, which is formed so as to be detachable from the side plate 22 with a single touch as shown in FIG. Further, 46 is an air filter. Note that the splash prevention plate 45 may be hinged so that it can be opened and closed.

Next, to explain the effect, the strand S
The splash prevention plate 45 shown in FIG.
After removing the air wiper device 21 from the cooling water tank 2 and rotating the outlet guide roll 44 in the direction of arrow B to retreat the air wiper device 21 with the opening 23 open in a direction perpendicular to the running strand S, the air wiper device 21 is removed from the cooling water tank 2. Thread the thread into pelletizer 4.

After threading is completed, the air wiper device 21 is advanced in the direction of arrow C in Fig. 4 (moved manually or by automatic means such as a hydraulic cylinder using the wheel 47), and the air wiper device 21 is moved to the position shown in Fig. 4. Fix it. At this time, the upper duct 24 is retracted to a position where it does not interfere with the strand S by operating the fan-shaped guide 26.

Next, the upper duct 24 and the lower duct 28 are rotated, the directions of the nozzles 25 and 29 are set at optimal positions, and the splash prevention plate 45 is attached to the side plate 22, thereby completing the threading operation. Further, during operation, the exit guide roller 44 is returned to the initial position.

As explained in detail above, the present invention has an opening corresponding to the running state of the strand formed at a position facing the strand, which greatly facilitates threading the strand, significantly shortening the time required for threading the strand. The environment can be improved. Furthermore, if a nozzle is installed and this is a slit type, the optimal position of the air jet direction can be set arbitrarily, which greatly improves the water removal effect and can easily respond to increased productivity of pellet manufacturing equipment. .

[Brief explanation of the drawing]

FIG. 1 is a side view of a conventional pellet manufacturing device, FIG. 2 is a side view of a pellet manufacturing device equipped with an air wiper device showing an embodiment of the present invention, and FIG.
FIG. 4 is an enlarged sectional view of the air wiper device shown in the figure, FIG. 4 is a sectional view taken from A to A in FIG. 3, and FIG. Explanation of the main parts of the figure, S...Strand, 21
...Air wiper device, 22...Side plate, 23...
Opening, 45... Splash prevention plate.

Claims (1)

[Scope of utility model registration request] In addition to forming an opening corresponding to the running state of the strand at a position facing the strand on the side plate,
An air wiper device characterized by being provided with a splash prevention plate that is detachable in accordance with the threading operation of the strand through the opening.