JP2013133137A - Quantitative filling method of object to be packaged in packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quantitative filling method of an object to be packaged in a packaging machine that can improve production processing capability by shortening time needed for a filling process.SOLUTION: A quantitative filling method of an object to be packaged in a packaging machine 1 includes: intermittently moving each of a plurality of pawl units 3 in order by a moving body 4, weighing each of the plurality of pawl units 3 by weighing means 5 in advance, and acquiring each weight data on the individual pawl units 3 prior to a packaging process of the object to be packaged; and filling the object to be packaged based upon the preobtained weight data of the individual pawl units 3 without weighing only the individual pawl units 3 in a filling process of the object to be packaged by filling means 6.

Description

  The present invention relates to a method for quantitatively filling an object to be packaged such as powder, granule or liquid in a rotary or reciprocating packaging machine.

  As a quantitative filling method of an article to be packaged in a conventional packaging machine, there is a quantitative filling method disclosed in Japanese Patent No. 3559483 proposed by the present applicant. This quantitative filling method has the advantage of being able to quantitatively fill a packaged object with high accuracy, but is provided with a grip pair for gripping the packaging bag for each filling step of filling the packaged object into the packaging bag. Measuring the weight of the claw unit (grip base), setting the stabilization time, adjusting the measuring means (load cell) to zero, and then filling and weighing the package, so the filling process takes time Met.

Japanese Patent No. 3559483

  Then, the subject of this invention is providing the fixed filling method of the to-be-packaged item in the packaging machine which can shorten the time which a filling process requires, and can improve production processing capacity.

  What solves the said subject is the nail | claw unit provided with the grip pair which hold | grips the packaging bag which accommodates to-be-packaged goods, and the said nail | claw unit hold | maintains several said nail | claw units so that attachment or detachment is possible. A moving body for intermittently moving the unit, a weighing means for weighing each of the plurality of claw units separated from the moving body, and a filling means for filling the packaging bag into the packaging bag A method for quantitatively filling an object to be packaged in a packaging machine having a plurality of claw units, wherein a plurality of the claw units are sequentially intermittently moved by the movable body prior to the packaging step of the object to be packaged. Are previously measured by the weighing means to obtain the weight data of the individual claw units, respectively, and in the filling process of the package by the filling means, the individual claw units are obtained. A method for quantitatively filling an object to be packaged in a packaging machine, wherein the object to be packaged is filled based on the weight data of each of the claw units acquired in advance without weighing only the weight of the package. .

  The acquired weight data of each of the claw units is stored in a control unit, and when the filling amount of the package is set, the control unit sets the target weight data for each of the claw units (the relevant The weight of the nail unit + the filling amount of the package) is calculated, and in the filling step, the package is filled by the filling means until the weight of the nail unit reaches the target weight based on the target weight data. It is preferable to control such that

  The filling means is arranged above the claw unit, the weighing means is configured to be moved up and down by an elevating means, and the measuring means is arranged to be able to move up and down the claw unit separated from the moving body by the elevating means. In addition, it is preferable that the filling means is controlled so as to fill the package bag with the packaged object even when the claw unit is raised by the elevating means.

According to the first aspect, it is possible to omit the step of measuring and weighting each claw unit for each filling step, and to reduce the time required for the filling step, thereby improving the production processing capacity.
According to claim 2, it is possible to easily realize a packaging machine having the effect of claim 1.
According to the third aspect, by filling the packaging bag with the article to be packaged even when the claw unit is raised, the time required for the filling process can be further shortened and the production processing capacity can be further improved.

It is a flowchart for demonstrating the characteristic effect | action of the quantitative filling method of the to-be-packaged object in the packaging machine of this invention. It is a control block diagram for demonstrating the effect | action of one Example of the fixed quantity filling apparatus to which the fixed quantity filling method of the to-be-packaged goods in the packaging machine of this invention is applied. It is a control block diagram for demonstrating the effect | action of one Example of the fixed quantity filling apparatus to which the fixed quantity filling method of the to-be-packaged goods in the packaging machine of this invention is applied. It is the plane schematic diagram of one Example of the rotary type packaging machine to which the quantitative filling method of the to-be-packaged goods in the packaging machine of this invention is applied. FIG. 5 is a schematic front view of the vicinity of a quantitative filling device in the packaging machine shown in FIG. 4. FIG. 6 is a schematic plan view of FIG. 5. It is a perspective view for demonstrating one process of the packaging process in the rotary type packaging machine shown in FIG. It is a perspective view for demonstrating one process of the packaging process in the rotary type packaging machine shown in FIG. It is a perspective view for demonstrating one process of the packaging process in the rotary type packaging machine shown in FIG. It is a perspective view for demonstrating one process of the packaging process in the rotary type packaging machine shown in FIG. It is a perspective view for demonstrating one process of the packaging process in the rotary type packaging machine shown in FIG. It is a timing chart of the filling operation | work by the quantitative filling method of the to-be packaged object in the packaging machine of this invention.

  In the present invention, prior to the packaging process of the article to be packaged, the plurality of claw units are intermittently moved sequentially by the moving body, and the weights of the plurality of claw units are respectively weighed in advance by the weighing means. Each of the data is acquired, and further, in the filling process, the object to be packaged is filled based on the weight data of the individual nail unit acquired in advance without measuring the weight of only the individual nail unit. Reduced the time required for the filling process and improved production throughput.

A method for quantitatively filling an object to be packaged in the packaging machine of the present invention will be described with reference to one embodiment shown in FIGS.
In the packaging machine 1 according to this embodiment, a method for quantitatively filling an object to be packaged includes a plurality of claw units 3 having a grip pair 2 for gripping a packaging bag a that accommodates the object to be packaged, and a plurality of claw units 3 detachable A moving body 4 for intermittently moving the claw unit 3 for each of a plurality of packaging steps, a weighing means 5 for weighing each of the plurality of claw units 3 separated from the moving body 4, and a package A method for quantitatively filling an article to be packaged in a packaging machine 1 having a filling means 6 for filling an article into a packaging bag a, wherein a plurality of claw units 3 are respectively moved before the packaging process of the article to be packaged. 4, the weights of the plurality of claw units 3 are respectively weighed in advance by the weighing means 5, and the weight data of the individual claw units 3 are respectively acquired. Then Quantitative filling of a package in a packaging machine, wherein the package is filled based on the weight data of the individual nail unit 3 acquired in advance without measuring the weight of only the individual nail unit 3 Is the method. Hereinafter, the present invention will be described together with the configuration of the packaging machine.

  As shown in FIG. 4, the packaging machine 1 is a rotary packaging machine, and a claw unit 3 having a grip pair 2 that holds the packaging bag a in a suspended manner is intermittently moved by a moving body (turn table) 4. It is an apparatus which rotates and moves and arrange | positions to a several packaging process, accommodates the to-be-packaged item in the packaging bag a, and commercializes.

  The main packaging process of the packaging machine 1 includes a bag feeding process (see FIG. 7) for supplying one packaging bag a to each grip pair 2 by a bag feeding device, and a bag upper opening for opening the bag upper opening of the packaging bag a. A step (see FIG. 8), a filling step (see FIGS. 9, 10 and 11) for filling the article to be packaged by the filling means 6, a blowing step for blowing off the article to be packaged attached to the inner surface of the bag mouth with air, It is an air venting process that eliminates air remaining in the packaging bag, a top sealing process that heat seals the bag mouth with a sealing device, and a cooling sealing process that cools the heat seal part, and holds the packaging bag a in a suspended form The claw unit 3 provided with the grip pair 2 is moved intermittently through the steps by the moving body (turn table) 4 so that the packaged material is filled and packaged in the packaging bag a, and the out-of-system discharge step is performed. Released to the outside And it is configured to be.

  The claw units 3 provided with the grip pairs 2 for gripping the packaging bag a in a suspended manner are detachably attached around the moving body (turntable) 4 as many as the number of packaging steps.

  Specifically, as shown in FIG. 6, the movable body 4 is provided with a clamp opening / closing unit 7 and a pair of clamps 8 that can be opened and closed by expansion and contraction of the rod 7 a of the clamp opening / closing unit 7. By holding the locking portions 3a provided on each claw unit 3 from both sides, the claw unit 3 is attached around the moving body (turn table), and on the other hand, the clamp 8 is opened outward and the locking portion The claw unit 3 is configured to be separable from the moving body 4 by releasing the clamping of 3a.

  The weighing means 5 is for weighing the weights of the plurality of claw units 3 separated from the moving body 4, and is arranged at a portion where the filling process is performed. The weighing means 5 of this embodiment is configured by a load cell, and the load cell 5 is configured to be movable up and down by a lifting means (claw unit lifting servomotor) 10 as shown in FIG.

  As shown in FIG. 5, a guide pin 9 is provided at the upper part of the load cell 5, while a pipe guide 11 is provided at the lower part of the claw unit 3, and the weighing means (load cell) 5 is moved up and down (claw unit lifting / lowering). As shown in FIG. 9, the guide pin 9 is inserted into the pipe guide 11, the claw unit 3 separated from the moving body 4 is lifted, and the claw unit 3 is configured so that it can be measured. Yes.

  The filling means 6 is for filling an object to be packaged in the packaging bag a, and is disposed above the portion where the filling process is performed. As shown in FIG. 6, the filling means 6 includes a filling jaw inserted into the packaging bag a to put the article to be packaged into the packaging bag a, and a filling jaw raising / lowering unit. 9, as shown in FIG. 9, the filling jaw is lowered by the filling jaw lifting / lowering unit and inserted into the packaging bag a, and then the filling operation is performed. After filling is completed, the filling is performed as shown in FIG. 11. The filling jaw is raised by the jaw lifting / lowering unit and pulled out from the packaging bag a.

  The first characteristic action of the present invention is that, prior to the packaging process, the plurality of claw units 3 are sequentially intermittently moved by the moving body 4, and the weight of the plurality of claw units 3 is previously measured by the weighing means 5. The weight data of each claw unit 3 is obtained by weighing each.

  Specifically, as shown in FIG. 1, when the packaging machine 1 is activated, the moving body 4 is intermittently driven to rotate and the packaging bag a is supplied to the grip pair 2 of the nail unit 3 sequentially from the bag feeding device. Is done. The claw unit 3 that has reached the filling step is released from the clamp 8 of the moving body 4 and can be separated from the moving body 4, and at the same time, the measuring means (load cell) 5 is moved up and down (claw unit lifting servomotor). 10 to raise the claw unit 3. In this state, the claw unit 3 is weighed by the weighing means (load cell) 5. The weight data of the claw unit 3 provided with the weight-measured packaging bag a is stored in the control unit (packaging machine main CPU: PLC) of the packaging machine 1.

  As shown in FIG. 2, when the control unit of the packaging machine 1 transmits a measurement start signal to the load cell controller, the weighing means (load cell) 5 measures the weight of the nail unit 3 and the nail unit 3 is operated as shown in FIG. The weight data of the unit 3 is transmitted from the load cell controller to the control unit of the packaging machine 1 and stored together with the measurement completion signal. Further, when the control unit of the packaging machine 1 transmits the raising / lowering command and the raising / lowering amount to the servo amplifier, the weighing means (load cell) 5 and the nail unit 3 are moved up and down by the raising / lowering means (claw unit raising / lowering servomotor) 10, and the weighing means Control is performed so that the weight of the claw unit 3 is measured and the weight data of the claw unit 3 is obtained in a state where the (load cell) 5 lifts the claw unit 3.

  When the weight data of one claw unit 3 is measured and stored in the control unit of the packaging machine 1, the claw unit 3 is lowered by the lifting / lowering means (claw unit lifting / lowering servomotor) 10 together with the weighing means (load cell) 5. , Captured by the clamp 8 and attached to the moving body 4.

  The moving body 4 intermittently rotates and conveys the next nail unit 3 to the filling process, and the weight data of the nail unit 3 including the packaging bag a is measured and stored in the control unit of the packaging machine 1. Done. By repeating such an operation, the weight data of all the claw units 3 are measured and stored in the control unit of the packaging machine 1. Thereby, when the moving body 4 makes one rotation, the weight data of all the claw units 3 are acquired.

  In this embodiment, the weight of the bag claw unit 3 provided with the packaging bag a is used as the weight data of the claw unit 3, but the weight of only the claw unit 3 before the packaging bag a is provided as the weight data. Are also included in the scope of the present invention.

  Thereafter, a plurality of packaging processes are sequentially performed for packaging the packaged object. In the packaging process of the packaged object by the filling means 6, the weight of only the individual nail unit 3 is measured and adjusted to zero as in the past. Without performing the above, the object to be packaged is filled based on the weight data of the individual nail units 3 acquired in advance (second characteristic operation of the present invention).

  Specifically, as shown in FIG. 1 or FIG. 3, the acquired weight data of each claw unit 3 is stored in the control unit of the packaging machine 1, and the control unit sets the filling amount of the object to be packaged. Then, the target weight data for each individual claw unit (the weight of the bag claw unit + the filling amount of the package) is calculated and transmitted to the load cell controller.

  In the filling step, based on the target weight data for each claw unit 3, the packaging bag a is filled by the filling means 6 until the weight of the claw unit 3 reaches the target weight as follows.

  First, it is detected whether or not the upper end opening of the packaging bag a to be filled is opened as shown in FIG. 8, and when it is opened, the large charge filling of the package is started. On the other hand, if not opened, the packaging bag a is discharged out of the system or recycled.

  After starting large charging, the claw unit 3 is raised, and when large charging is completed, small charging is started. In the middle of the small charging, weight measurement is started by the weighing means 5 (load cell) as shown in FIG. 12. When the target weight is reached, the small charging is stopped and the net filling operation is completed.

  The operation | movement in such a filling process is performed when the control part of the packaging machine 1 controls each part, as shown in FIG. Specifically, when the control unit of the packaging machine 1 transmits a measurement start signal and target weight data to the load cell controller, the weighing means (load cell) 5 performs weight measurement, and the target weight data previously transmitted to the load cell controller and The weight data is transmitted from the load cell controller to the control unit together with the measurement completion signal when the coincidence is confirmed. Further, when the control unit of the packaging machine 1 transmits the raising / lowering command and the raising / lowering amount to the servo amplifier, the weighing means (load cell) 5 and the nail unit 3 are moved up and down by the raising / lowering means (claw unit raising / lowering servomotor) 10, and the weighing means Control is performed so that the weight of the claw unit 3 is measured in a state where the (load cell) 5 lifts the claw unit 3 and the measured weight data of the claw unit 3 is obtained. Furthermore, filling control to the packaging bag a is performed by transmitting a filling command from the control unit of the packaging machine 1 to the filling means 6 (filling machine).

  As described above, according to the method for quantitatively filling an object to be packaged in the packaging machine 1 of the present invention, prior to the process of packaging the object to be packaged, the plurality of claw units 3 are sequentially intermittently moved by the moving body 4, respectively. The weight of each claw unit 3 is previously measured by the weighing means 5 to obtain the weight data of each claw unit 3, respectively. Further, in the filling step, the weight of only the individual claw unit 3 is not measured. By filling the articles to be packaged based on the weight data of the individual nail units 3 acquired in advance, the time required for the filling process can be shortened (about 1/2) and the production processing capacity can be remarkably improved. .

  Further, in the quantitative filling method of the article to be packaged in the packaging machine 1 of this embodiment, as shown in FIG. 5, the filling means (filling machine) 6 is arranged above the claw unit 3, and the weighing means (load cell) 5 is The lifting / lowering means (claw unit lifting / lowering servomotor) 10 can be moved up and down, and the weighing means (load cell) 5 is arranged so that the claw unit 3 separated from the moving body (turn table) 4 can be moved up and down. (Filling machine) 6 is controlled so as to fill the packaging bag a with the article to be packaged even when the claw unit 3 is lifted by the lifting means 10.

  Specifically, as shown in FIG. 12, the raising / lowering means (claw unit raising / lowering servomotor) 10 (servo timing) while the large charging is performed by the filling means (filling machine) 6 (between t1 and t2). (See) starts to raise the claw unit 3 from t3, and the packaged bag a is filled with the article to be packaged even when the claw unit 3 is raised. Such a control is a control made possible by the present invention in which the weight of the claw unit 3 is measured for each filling process, a stabilization time is provided, and zero adjustment of the measuring means 5 (load cell) is not performed. It is possible to further shorten the time required for the process and further improve the production processing capacity.

1 Packaging machine 2 Grip pair 3 Claw unit 4 Moving body (turntable)
5 Weighing means (load cell)
6 Filling means (filling machine)
7 Clamp opening / closing unit 8 Clamp 9 Guide pin 10 Lifting means (claw unit lifting device)
11 Pipe guide

Claims (3)

A plurality of claw units provided with grip pairs for gripping a packaging bag for containing an article to be packaged, and a movement for detachably holding the plurality of claw units and moving the claw unit intermittently for each of a plurality of packaging steps An article to be packaged in a packaging machine comprising: a body; weighing means for weighing each of the plurality of claw units separated from the movable body; and a filling means for filling the packaging bag into the packaging bag Prior to the packaging step, the plurality of claw units are sequentially intermittently moved by the moving body, and the weights of the plurality of claw units are previously measured by the weighing means, respectively. The weight data of each of the claw units is obtained by weighing and the weight of only the individual claw unit is measured in the filling process of the package by the filling means. Without quantitative filling method to be packaged in the packaging machine to be packaged with the weight data of each of the claw units previously acquired group is characterized in that it is filled. The acquired weight data of each of the claw units is stored in a control unit, and when the filling amount of the package is set, the control unit sets the target weight data for each of the claw units (the relevant The weight of the nail unit + the filling amount of the package) is calculated, and in the filling step, the package is filled by the filling means until the weight of the nail unit reaches the target weight based on the target weight data. The method for quantitatively filling an object to be packaged in the packaging machine according to claim 1, which is controlled so as to be controlled. The filling means is arranged above the claw unit, the weighing means is configured to be moved up and down by an elevating means, and the measuring means is arranged to be able to move up and down the claw unit separated from the moving body by the elevating means. And the filling means is controlled to fill the packaging bag with the packaging object even when the claw unit is raised by the elevating / lowering means. Filling method.