JPS60110629A - Method and device for removing dust to polyethylene bag - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method and apparatus for removing dust from polyethylene bags having a novel configuration.

Conventionally, after filling a thick polyethylene bag with powder,
When attempting to heat-seal the opening of this bag, there is a problem in that powder-like material adheres to the inside of the opening of the bag, making it impossible to securely heat-seal.

The present invention is intended to fully solve such problems, and one embodiment thereof will be described in detail below with reference to the drawings.

The structure of the first invention is as follows.

After filling the powder 2 with the powder 2, hot air is radiated to the inside of the opening of the Borier φlen device 6 for three people to remove the powder adhering to the inner wall of the opening 3A. Above opening 3A
After radiating hot air to K, it is configured to be heat-sealed or the like.

1 is the device of the second invention. The structure is such that the belt 4 is conveyed from the right to the left while holding the upper part of the thick polyethylene bag 6 that has been filled with powder, and the belt 4 is conveyed from the right to the left on the upper surface of the belt 4. A second guide plate 5.6 is provided above the first guide plate 5, and a hot air radiating device 7 is provided above the first guide plate 5 to radiate hot air to the opening 6A of the bag 6. A hot air radiating device 8 is provided above the second guide plate 6 to radiate hot air toward the six people through the opening of the bag 6. Therefore, the above device 7.8 is the device body 7A, 8.
A device main body 7A consisting of nozzle parts 7B and 8B,
8A is constructed as shown in FIGS. 6 and 9. That is, the copper pipe 7 is placed around the outer periphery of the round rod heaters 7C and 8C at the axis.
D and 8D are wound in a spiral shape, and the insulation material 7 is wrapped around the outer circumference of this pipe, and 1. C pipe-shaped case 7F
, 8F, and one end of the above pipes 7D and 8D is the popular pipe 7D°.

Exhaust pipes 7D" and 8D"' are connected to the other end of 8d. In the figure, yc'' and s6 are the lead wires of the heater.As described above, the main body 7A of the apparatus.

8A has the same structure, but heater 7C has hot air,
The temperature of the heater 8C is adjusted to be suitable for hot air. On the other hand, the nozzle portion 7B is formed into a pipe shape and is connected to the exhaust pipe 7D'. In addition, the device main body 7A
The nozzle portion 7B is inserted into the upper opening of the thick polyethylene bag B, which is advanced by a hydraulic cylinder 7G, etc., and is raised after a predetermined period of time. Further, the nozzle portion 8B has an ejection hole 8B° at the lower end of the side wall of the pipe whose tip is sealed. This nozzle portion 8B is attached to the device main body 8A via a swinging device 9. The rocking device 9 is the exhaust pipe 8
Block body 9Ar upper pipe 8D″ fixed to D′
A ventilation hole 9B with a cross-sectional shape communicating with is opened, and the block body 9A is connected with a disc body 9C that rotates around the horizontal part of the ventilation hole 9B. A ventilation hole 9D communicating with the air hole 9B is opened toward the right edge of the disk body 9C, which is perpendicular to the axis, and the nozzle portion 8B is connected to the ventilation hole 9D in a circular manner.

This disk body 9C is the rotor actuator 9E.
to the block body 9A and rotate it at a predetermined angle +
It is configured so that 10 is the number 1 heating plate, 11 is the second
heating plate, 12 seal band, 13 first cooling plate, 1t
1 is a second cooling plate, and 15 is a drive motor for the belt 4.

And the above 1. 2nd heating plate, seal band, 1st
．． The second cooling plate is arranged so that it can hold the thick polyethylene bag 3 conveyed by the belt 4 from the front and back. The temperature of the hot air from the 8 units of the above device is adjusted to a level that softens the inner surface of the thick polyethylene bag.

and.

In the device 7 described above, the upper edge side of the bag 3 is 3° in FIG.
The nozzle portions 7B and 8B are lowered to a height of 100 mm.Furthermore, in the device 8, the nozzle portion 8B rotates to reach the opening of the bag, but as in the device 7, hydraulic pressure is used. It may also be configured such that the stone moves up and down to a predetermined height.

Since the great invention is constructed as described above, hot air and hot air are sequentially radiated onto the inner surface of the opening of the bag 3, and
Powder adhering to the inner surface will be blown away, making it difficult to perform a reliable seal in the heat sealing process. In addition, the inner surface of the wind is preheated in the order of these temperatures WLpA,
In this respect as well, the sealing process can be ensured.

[Brief explanation of drawings]

FIG. 1 is a plan view of the entire device, and FIG. 2 is a front view. Figure 3 is a left side view of the hot air radiator, Figure 4 is a front view, Figure 5 is a right side view, Figure 6 is an enlarged sectional view of the main part of the hot air radiator, and Figure IE7 is the main part of Figure 5. An enlarged view, FIG. 8 is an enlarged vertical sectional view of the same as above, and FIG. 9 is an enlarged sectional view of the main part of the hot air radiating device.

Claims (1)

[Claims] 16 Hot air is radiated to the inside of the opening 3A of the polyethylene bag 3 after filling the powder 2, and the opening 3
A method for removing dust from a polyethylene bag, which comprises removing powder adhering to the inner wall of A, radiating hot air to the opening 3AIC, and then heat-sealing the bag. 2. A belt 4 that conveys the thick polyethylene bag 3 from the right to the left while holding the upper part of the thick polyethylene bag 3 that has been filled with powder.
From the right side to the left side, the first. A second guide plate 5.6 is stretched, and above the first guide plate 5 there is provided a hot air radiating device 7 for radiating hot air to the opening 3A of the bag 6. A dust removal device for polyethylene bags, characterized in that a hot air radiating device 8 for radiating hot air toward the opening 3AIC of the bag 3 is provided above the plate 6.