JP4429400B2 - Method and apparatus for removing dust from carton blank cross section - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a dust removing method and apparatus for preventing foreign matter from being mixed with paper dust, dust or the like (hereinafter referred to as dust) adhering to a cross section of a carton blank.
[0002]
[Prior art]
Conventionally, the fine dust adhering to the cross section of the carton blank is removed by wiping the dirt on the cross section or the end face with a cloth-like material or rubbing with a soft brush in a so-called bar stack where the carton blanks are laminated. For example, the removal is generally performed.
[0003]
[Problems to be solved by the invention]
However, although these methods can remove the dust adhering to the surface of the cross section, it is easy to use the normal method if the cross section is entangled with paper fibers or is deep inside the cross section. After the carton blank is formed into a paper container or a paper cup and filled with the contents and cannot be removed, it may come out from the cross section and cause a problem as foreign matter contamination. This foreign matter contamination or contamination has been paid attention especially in cartons for quasi-drugs such as beverages, pharmaceuticals and urine diagnostics, and precision instruments.
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a method and apparatus for forcibly removing dust from a cross section of a carton blank until the carton blank is formed.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the dust removal method of the carton blank cross section according to the present invention is applied to the vibration area around the cross section of the carton blank of a liquid paper container or paper cup while being pressed from above through a pressing die. It comprises an ultrasonic treatment process for forcibly expelling dust from the cross section of the carton blank by applying sonic vibration and a cleaning process for removing the expelled dust. The ultrasonic treatment process and the cleaning process may be performed at different stations, or may be performed at the same station. Furthermore, the ultrasonic vibration in a state where the dust removing device for the carton blank cross section according to the present invention is pressed from above through a pressing die to the vibration area around the cross section of the carton blank of the liquid paper container or paper cup set on the jig. And an ultrasonic vibration device for forcibly expelling dust adhering to the cross section of the carton blank, and a cleaning device for removing the cross section once dust has been expelled by blowing and sucking air.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings.
FIG. 1 is an explanatory diagram of a carton blank targeted by the present invention.
FIG. 1A is a development view of a carton blank 10 of a gable top carton that is a typical embodiment of a liquid paper container, and FIG. 1B is a development view of a carton blank 10 of a paper cup body. The present invention is not limited to the above carton blanks, and carton blanks used for pharmaceuticals, precision member products, and the like.
In general, the punched cross section around the carton blank contains detachable dust, and there is a sufficient possibility that this will be mixed into the contents during molding and filling.
In the case of the liquid paper container and the paper cup carton blank 10 shown in FIGS. 1 (a) and 1 (b), the cross-section of the side end a is a cross-section that is in direct contact with the content liquid and is a portion requiring special attention. .
[0006]
FIG. 2 is an explanatory view of the dust removing method for a carton blank section according to the present invention.
The method for removing dust from the cross section of the carton blank according to the present invention includes an ultrasonic treatment process (1) for forcibly removing dust from the cross section by applying ultrasonic vibration to the cross section of the carton blank, and a cleaning process (2) for removing the expelled dust. Constructed integrally with ▼, by pre-processing by ultrasonic vibration prior to cleaning, the dust generated from the carton blank and molded and filled can be greatly reduced. Is possible.
Of course, the above-described steps are accompanied by a step of feeding and discharging the carton blank 10.
In the ultrasonic treatment step {circle around (1)}, a portion where ultrasonic vibration is applied to the carton blank 10 is a vibration region V indicated by a hatched portion of the carton blank 10 shown in FIG. The ultrasonic vibration is transmitted to the cross section of the carton blank by concentrating the ultrasonic wave of 12 to 40 kHz on the pressing die formed in the pattern of the vibration area of the carton blank provided at the tip of the horn of the ultrasonic oscillator, As a result, the dust entering the paperboard layer of the carton blank is forced out of the cross section. The vibration time depends on the type of paperboard used for the carton blank, but is preferably in the range of 0.05 to 10 seconds.
In addition, even if the carton blank is processed for each carton blank in the ultrasonic processing step (1), a plurality of carton blanks are overlapped so that the total thickness does not exceed 50 mm and processed simultaneously. You may do it.
[0007]
The cleaning step is a step of literally cleaning the dust once expelled and the dust adhering from the beginning. The method is a step of blowing clean air on the cross section of the carton blank and simultaneously sucking the air and discharging the dust while removing the dust with a microfilter or the like.
The ultrasonic treatment process (1) and the cleaning process (2) may be performed in different stations as shown in FIG. 2, or although not shown, (1) and (2) ▼ may be integrated and performed simultaneously at the same station.
The ultrasonic treatment process (1) and the cleaning process (2) are preferably performed in a dust-proof hood H that forms a closed system.
[0008]
Hereinafter, a dust removing device for a carton blank section according to the present invention will be described.
The dust removing device for a carton blank section according to the present invention applies an ultrasonic vibration to the periphery of the cross section of the carton blank 10 set on a jig, and forcibly expels dust adhering to the cross section. The cleaning device C that removes the dust once expelled by blowing and sucking air is collected as a unit in a sealed system by a dust-proof hood H.
FIG. 3 is an explanatory diagram of the ultrasonic vibration device used in the present invention.
As shown in FIG. 3, the ultrasonic vibration device U is a device that effectively applies the mechanical energy of ultrasonic waves, and a converter 1 that converts ultrasonic waves into vertical vibrations and amplifies the vibrations. It consists of a booster 2, a horn 3 that transmits vertical vibrations, and a pressing die 4 that is created in accordance with a vibration area pattern of a carton blank 10 attached to the tip of the horn 3. The ultrasonic vibration device U is a vibration region of the carton blank 10 in a state where the carton blank 10 set on the jig 5 and supplied from the carton blank supply device S is pressed from above through the pressing die 4. It is possible to vibrate V and effectively expel dust that is difficult to separate from the cross section.
[0009]
FIG. 4 is an explanatory diagram of a cleaning device used in the present invention.
The cleaning device C is also in a closed system, and is provided with a blower 6 for blowing clean air aiming at a cross section of the carton blank and an exhaust duct 7 with a dustproof filter.
Although not shown, it may be integrated with the ultrasonic vibration device U, the blower 6 may be installed near the pressing die 4, and the exhaust duct 7 may be provided above or laterally. In this case, cleaning is performed while dust is expelled from the cross section of the carton blank 10 by ultrasonic vibration.
Further, the supply and discharge of the carton blank 10 to each of the above devices may be performed by passing each device as it is with the carton blank 10 set on the jig 5, and this movement is intermittent as shown in FIG. A turret system by driving or an endless linear conveyor system (not shown) may be used.
Further, the carton blank 10 is set on the jig 5 by the carton blank supply device S, and the carton blank discharging device D is used to remove the carton blank 10 from the jig 5. As the method, any other known method may be used by attaching or detaching the carton blank 10 with soccer provided at the tip of the robot arm.
The carton blank setting method on the jig 5 is a method of providing pins for stopping the horizontal movement of the carton blank 10 in several places, a method of sucking with a vacuum, etc., and a method that does not interfere with the cleaning of the cross section of the carton blank. Can be freely adopted.
All of the above devices are placed in a closed system covered with a dust-proof hood H, so that the dust that has been forcibly ejected is ejected to the outside, or conversely, the surrounding air is prevented from adhering. The operation at is preferred.
[0010]
【The invention's effect】
According to the present invention, by the dust removing method of the carton blank cross section comprising the ultrasonic treatment step and the cleaning step for the cross section of the carton blank, and by the ultrasonic vibration device and the cleaning device used in each step, Dust on the cross section of the carton blank, which could not be removed so far, can be efficiently removed, and is effective for packaging with paper containers that do not allow contamination and contamination.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a carton blank targeted by the present invention. FIG. 2 is an explanatory diagram of a dust removing method for a carton blank section according to the present invention. FIG. 3 is an explanatory diagram of an ultrasonic vibration device used in the present invention. FIG. 4 is an explanatory diagram of a cleaning device used in the present invention.
DESCRIPTION OF SYMBOLS 1 Converter 2 Booster 3 Horn 4 Pushing die 5 Jig 6 Blower 7 Exhaust duct 10 Carton blank C Cleaning apparatus D Carton blank discharge apparatus H Hood S Carton blank supply apparatus U Ultrasonic vibration apparatus V Vibration area

Claims (4)

Ultrasonic treatment that forcibly expels dust from the cross-section of the carton blank by applying ultrasonic vibration to the vibration area around the cross-section of the carton blank of the liquid paper container or paper cup while being pressed from above via a push die A method for removing dust from a cross section of a carton blank, characterized by comprising a step and a cleaning step for removing the expelled dust.   The method for removing dust from a carton blank section according to claim 1, wherein the cleaning step is performed at a different station after the ultrasonic treatment step.   The dust removing method for a carton blank section according to claim 1, wherein the cleaning step is performed at the same station after the ultrasonic treatment step. It adheres to the cross section of the carton blank by applying ultrasonic vibration to the vibration region around the cross section of the carton blank of the liquid paper container or paper cup set on the jig in a state where it is pressed from above through a pressing die. an ultrasonic vibration device to expel dust forcibly once dust removing device of the carton blank section, characterized in that comprising a cleaning device for removing by suction and the cross-sectional air blowing of the carton blank dust expelled .

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