JP2003040221A - Filling and packaging apparatus and controlling method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filling and packaging apparatus which can well carry a film without requiring troublesome manual adjustment of braking force for the carrying of the film and a method for controlling it. SOLUTION: The filling and packaging apparatus includes first and second braking means K4 and K5 for braking a carried film F, a filling mechanism 7 for filling a packaging bag P with contents W, a start-to-fill means K2 for causing the mechanism 7 to start filling the contents W, and a control means K3 for controlling the first and second braking means K4 and K5 so that the film F is braked by predetermined braking force B predetermined time T later since the filling of the contents W is started by the means K2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling and packaging apparatus for forming a packaging bag by vertically and horizontally sealing a filled film while it is filled with contents, and a control method thereof.

[0002]

2. Description of the Related Art Conventionally, as disclosed in, for example, Japanese Unexamined Patent Publication No. 8-48301, a long film, which is continuously transferred from an original film by a feeding means such as a feeding roller, is folded in two. Or the two are overlapped, and the overlapped side edges are vertically sealed to form a vertical seal part, and the overlapped films are horizontally sealed to form a horizontal seal part to be the bottom part. By filling a predetermined amount of contents in the upper part of the open cylinder which is behind the horizontal seal part in the transport direction of the film, and then laterally sealing again at regular intervals to form a horizontal seal part. There is a filling and packaging apparatus that manufactures a packaging bag by forming a closed packaging bag (continuous packaging bag) and cutting a substantially central portion of a lateral seal portion formed on a film by a cutting mechanism having a blade.

[0003] These filling and packaging apparatuses have a good vertical length without wrinkles or folds in the continuously transferred film.
In order to carry out lateral sealing, it is necessary to perform a smooth film transfer, and therefore, the filling and packaging apparatus is equipped with a tension control device having a braking means such as an electromagnetic powder brake or a hysteresis type brake, and these are, for example, There is one disclosed in JP-A-8-198206.

The tension control device gives a constant proper tension value to the film from the original film to the feeding means for feeding the film, and this proper tension value is given to the feeding means. A good film can be transferred by maintaining a good balance between the self-weight of the continuous packaging bag containing the contents and the braking force by the braking means provided in the tension control device between the cutting mechanism and the cutting mechanism. Met.

[0005]

However, in such a filling and packaging apparatus, the film is gradually filled with the contents W from a state in which the contents are not filled in the continuous packaging bag, for example, at the start of operation. May be transported. The tension control device is set so as to maintain a constant tension value irrespective of the change in the filling amount of the contents, in order to maintain the balance between the self-weight of the continuous packaging bag and the braking force of the braking means. By adjusting the volume of the tension adjustment mechanism such as the variable resistor provided in the tension control device, the braking force is weakened at the start of operation and gradually increased after the packing bag is filled. It was necessary to adjust the braking force in the means.

The adjustment of the braking force in the tension control device is a complicated work manually performed by the operator, and depends on the experience of the operator. There was a problem that the work of could not be performed. In addition, if the braking force is adjusted incorrectly at the start of the operation of the filling and packaging machine, not only can the film not be transferred satisfactorily, but also wrinkles and folds in the film sealing area, or the seal misalignment with the film. There is also a problem in that the film is unnecessarily used due to the occurrence of a seal defect.

In view of the above-mentioned problems, the present invention provides a filling and packaging apparatus and a control method therefor that can perform good film transfer without requiring a complicated manual braking force adjustment for film transfer. The purpose is to do.

[0008]

According to a first aspect of the present invention, there is provided a filling and packaging apparatus in which a film transferred from an original film is vertically and horizontally sealed to form a packaging bag, and the packaging bag is formed. A filling and packaging apparatus for filling contents in a bag, a braking means for braking the transferred film, a filling means for filling the contents in the packaging bag, and the contents by the filling means. And a control means for controlling the braking means so as to brake the film with a predetermined braking force after a predetermined time has elapsed since the filling of the contents was started by the filling start means. And a control means.

[0009] Further, as described in claim 2, in the filling and packaging apparatus according to claim 1, the control means performs the predetermined time after the filling of the contents is started by the filling start means. The braking means is controlled so that the braking force is increased stepwise until the predetermined braking force is reached.

Further, as described in claim 3, in the filling and packaging apparatus according to claim 1 or 2, the predetermined time and the predetermined braking force are determined according to the packaging form of each type of the packaging bag. Is provided with a setting means capable of changing the setting.

Further, according to the control method of the filling and packaging apparatus according to the present invention, as described in claim 4, the film transferred from the original film is vertically and horizontally sealed to form a packaging bag, and the packaging bag is formed. A method of controlling a filling and packaging apparatus for filling contents therein, comprising: braking means for braking the transferred film; filling means for filling contents in the packaging bag; A filling start means for accelerating the start of filling of the contents, the start of filling the contents is determined by an input state of the filling start means, and predetermined after a predetermined time has elapsed since the filling of the contents was started. It is characterized in that the braking means is controlled so that the film is braked by the predetermined braking force.

Further, as described in claim 5, in the filling and packaging apparatus according to claim 4, the predetermined time and the predetermined braking force are set according to a packaging form for each type of packaging bag by using setting means. It is characterized in that it is set as follows.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings.

Referring to FIG. 1, the entire structure of the filling and packaging apparatus will be described. A holding mechanism 1, a film guiding mechanism 2, an auxiliary braking mechanism 3, a film folding mechanism 4, a vertical sealing mechanism 5, and a horizontal sealing mechanism 6 are described. And filling mechanism (filling means) 7
And a cutting mechanism 8 are provided on a machine base (not shown).

The holding mechanism 1 is provided with a shaft portion 1B which detachably and replaceably supports a film raw material 1A in which a film F made of a laminated body of nylon and low density polyethylene is wound in a roll shape and which is detachably and replaceably supported. Is. Further, the shaft portion 1B of the holding mechanism 1 is provided with a first braking unit, which will be described later, including an electromagnetic powder brake or the like for braking the rotation of the original film web 1A.

The film guiding mechanism 2 is provided with a plurality of rotatable rollers for guiding and guiding the film F drawn from the original film to the film folding mechanism 4.

The auxiliary braking mechanism 3 brakes the rotation of the pair of rollers 3A rotatably provided so as to sandwich the film F drawn from the original film 1A and guided by the film guiding mechanism 2. The second braking means, which will be described later, includes an electromagnetic powder brake and the like, and brakes the transfer of the film F.

The film folding mechanism 4 has a folding guide 4A whose position can be adjusted according to the packaging form of each product.
The film F drawn from the film guide mechanism 2 is folded in half along the longitudinal direction.

The vertical seal mechanism 5 is rotatably provided with a driving means M1 comprising a servomotor as a drive source, and a pair of vertical heat seal rolls 5A are opposed to each other with the film F interposed therebetween.
The longitudinally sealed portion F is formed by vertically sealing the folded edge portion, the intermediate portion, and the folded edge portion (the left and right edge portions and the intermediate portion) of the folded film F in the vertical direction while unwinding.
1 to form 1. An electric heater (not shown) is built in each of the vertical heat seal rolls 5A. The vertical seal mechanism 5 is also used as a delivery means for pulling out the film F, and delivers the film F by rotating the vertical heat seal roll 5A at a predetermined rotation speed according to the production conditions. Is.

The horizontal sealing mechanism 6 is rotatably provided with a driving means M2 composed of a servo motor as a driving source, and sandwiches the film F having the vertical sealing portion F1 formed by the vertical sealing mechanism 5 between the pair of horizontal heat sealing rolls facing each other. 6A
The film F is laterally sealed by the
The bottom portion, that is, the horizontal seal portion F2 is formed. An electric heater (not shown) is built into each of the horizontal heat seal rolls 6A as in the vertical seal mechanism 5.

The filling mechanism 7 is provided with a content W consisting of a seasoning or soup containing solid matter such as sesame or a piece of meat, which is sent out by a supply means (not shown) including a pump.
Through the nozzle N, the vertical seal portion F1 and the horizontal seal portion F2
Is filled in a continuous film F formed in a bottomed tubular shape. Further, the film F bag mouth portion containing the contents W is further fed and laterally sealed again in the lateral direction by the lateral sealing mechanism 6 to be in a sealed state.

The cutting mechanism 8 obtains individual packaging bags P by cutting a substantially central portion of the lateral seal portion F2 of the film F which is continuously wrapped in a vertical direction by a pair of opposed blades (not shown). is there.

Next, the electrical construction of the main parts of the filling and packaging apparatus of the present invention will be described with reference to FIG.

The setting means K1 comprises a touch panel capable of setting and inputting production conditions according to the packaging form for each product type. The production conditions set and input here are various according to the packaging form of each product such as the standard delivery speed value of the film F by the vertical sealing mechanism 5, the filling speed value of the contents, the shape and the content of the packaging bag P, and the like. These are set values, and the various values are output to the control means K3 described later.

[0025] Also. The setting means K1 can preset a predetermined braking force for the transfer of the film F in accordance with the self-weight of the continuous packaging bag containing the content W that continues until the cutting by the cutting mechanism 8, and the filling mechanism 7 to the cutting mechanism 8 can be set. A predetermined time from the start of filling until the predetermined braking force is reached can be set in advance in accordance with the time for filling the entire contents W into the continuous packaging bags. It should be noted that the predetermined braking force maintains a good balance between the self-weight of the continuous packaging bag containing the contents W between the vertical sealing mechanism 5 and the cutting mechanism 8 and the braking force for the transfer of the film F by the braking means described later ( The weight of the continuous packaging bag and the braking force are substantially balanced).

The filling start means K2 outputs a signal for prompting the start of the filling of the contents W by the filling mechanism 7 to the control means described later by a switch operation, and in this case, it is also used as the touch panel of the setting means K1. .

The control means K3 is composed of a microcomputer, and has a ROM in which a program for processing operation described later is stored, a RAM for temporarily storing operation values, a CPU for executing the program, and a setting means K1, The charging start means K2 has an I / O interface for establishing an electrical connection with each means described later and each mechanism (not shown) having the drive system described above. In this case, the control means K3 also serves as the control means for electrically controlling the filling and packaging apparatus.

First and second braking means (braking means) K4
K5 is provided in the holding means 1 and the auxiliary braking mechanism 3, and adjusts the braking force for the transfer of the film F based on the control signal from the control means K3. The first and second braking means K4, K5 generate torque based on the supplied current value which is the control signal, and this torque is applied to the shaft portion 1B of each mechanism 1 and 3 and the rollers. A predetermined braking force with respect to the transfer of the film F can be obtained by transmitting to the 3A via an electromagnetic powder brake or the like (not shown).

The supply means K6 comprises a pump provided in the filling mechanism 7, and drives the motor provided in this pump to send the contents W to the nozzle N side.
The supply means K6 drives the motor at a rotation speed based on the control signal of the control means K3, and fills the packaging bag P with the contents W at a filling speed according to the rotation speed. To do.

Next, the processing operation of the control means K3 will be described with reference to FIGS.

The control means K3 inputs the predetermined braking force B for the transfer of the film F set by the setting means K1 and the predetermined time T from the start of filling until the predetermined braking force B is reached (step S1). For example, the predetermined braking force is 12
[N] (6 in each of the first and second braking means K4, K5
[N]) and the predetermined time is set to 5 seconds. The predetermined braking force is estimated from the weight of the continuous packaging bag containing the contents W between the filling mechanism 7 and the cutting mechanism 8, and the feeding speed of the film F and the filling are determined for the predetermined time. It is estimated from the length of the continuous packaging bag from the mechanism 7 to the cutting mechanism 8.

The control means K3 calculates the number of times X of processing of braking force adjustment described later based on the predetermined time T input in step S1 (step S2). In this case, assuming that the braking force adjustment processing is performed at time intervals of 0.1 seconds, a value obtained by dividing the predetermined time T by 0.1 is used as the number of processing times X.
And Incidentally, the timing of the braking force adjustment every 0.1 seconds is performed by an internal timer or a clock pulse included in the control means K3. Further, the control means K3 subtracts the initial braking force 4 [N] from the predetermined braking force B and divides the calculation result by the number of times of processing X calculated in step S2, thereby performing the braking force adjustment process. The adjustment value of the braking force at is calculated (step S3). Therefore, in this case, the control unit K3 processes 50 times and adjusts the value 0.16 [N].
And calculate. It should be noted that the initial braking force is preset with a value that allows the film F to be pulled out by the vertical sealing mechanism 5 without causing the film original fabric 1A to idle during film transfer. It is set with an initial braking force of 4 [N].

The control means K3 initializes the counter C (C
← 0) (step S4), and it is determined whether or not the filling by the filling mechanism 7 is started based on the signal from the filling start means K2 (step S5). When it is determined in step S5 that the filling is started, the control means K3 compares and determines whether or not the counter C is the number of times of processing X or more (step S6).

When the counter C is not equal to or more than the number of processing times X as a result of the comparison determination, the control means K3 controls the transfer of the film F by the adjustment value Y (eg, 0.16 [N]) calculated in step S3. First, to strengthen the power
The second braking means K4, K5 are controlled (each braking force is set to 0.
By increasing 08 [N], the braking force adjustment process is performed (step S7). Next, the control means K3 increments the counter C (step S8) and performs the process of step S6 again. From step S6 to step S8
The repeated processing up to is the braking force adjustment during the predetermined time T shown in FIG. In addition, the control means K3, step S
When C = 50 in the processing determination of step 6, the braking force is adjusted via the braking means K4, K5 so that the braking force is always the predetermined braking force (12 [N]) (step S9).

By performing the above-described processing, as shown in FIG. 4, the predetermined braking force B is obtained after the predetermined time T preset by the setting means K1 after the operation of the filling start means K2 is performed. The braking force for the film transfer can be automatically increased according to the filling state of the object W,
At the start of filling in the filling and packaging device, the braking force against the film transfer is extremely large with respect to the self-weight of the continuous packaging bag containing the contents W, so that a slip occurs in the vertical sealing mechanism 5 serving as a transfer means of the film F. Can be prevented.

That is, a filling and packaging apparatus for forming a packaging bag P by vertically and horizontally sealing the film F transported from the film original fabric 1A, and filling the contents W in the packaging bag P is transported. The first to brake the film F
The second braking means K4, K5, the filling mechanism 7 that fills the packaging bag P with the content W, the filling start means K2 that prompts the filling mechanism 7 to start filling the content W, and the filling start means K2.
A control means K3 for controlling the first and second braking means K4, K5 so that the film F is braked by a predetermined braking force B after a predetermined time T has elapsed since the filling of the contents W was started. By including, it is not necessary to manually adjust the braking force for film transfer,
It becomes a filling and packaging apparatus that can perform good film transfer.

Further, the control means K3 has a filling start means K2.
By controlling the first and second braking means K4, K5 so as to increase the braking force stepwise until a predetermined braking force B is reached after a predetermined time T has elapsed since the filling of the contents W was started by the contents The braking force can be gradually increased according to the filling amount of W, and the weight of the continuous packaging bag containing the contents W and the braking force for film transfer are well balanced,
Good film transfer can be performed.

Therefore, even when the film F is transferred while the content W is gradually filled from the state where the content W is not filled in all the continuous packaging bags as immediately after the start of filling, the content W is filled. Since appropriate tension can be applied to the film F according to the related art, wrinkles and folds in the sealing portion of the film F caused by incorrect braking force adjustment as in the past, or seal displacement and sealing failure with respect to the film F may occur. Good film transfer can be performed without any problems. In addition, such a stepwise adjustment of braking force is performed by using a pair of heat seal rolls vertically,
This is particularly effective in the case of manufacturing a large-capacity filling bag having an internal capacity of 500 cc or more in a filling and packaging apparatus equipped with the lateral sealing mechanisms 5 and 6.

Further, in the filling and packaging apparatus of the present invention, the rotation of the original film 1A is rotated by using the first braking means K4, and the transfer of the film F from the original film 1A to the vertical sealing mechanism 5 is performed by the second method. By braking at a plurality of locations using the braking means K5, more reliable and stable tension adjustment of the film can be performed, so that excellent film transfer can be performed.

The filling and packaging apparatus according to the above-described embodiment of the present invention has been described by way of example in which the vertical sealing mechanism 5 is used for both vertical sealing of the film F and transfer of the film F. It is not limited to this,
For example, it may be provided with a delivery unit including a feed roller provided exclusively for transporting the film F.

In the embodiment of the present invention, the setting means K1 including the touch panel is used to set the predetermined time T and the predetermined braking force B, but the present invention is not limited to this. The control means K3
The predetermined time T may be automatically calculated and set in accordance with the time for filling the entire content of the continuous packaging bag from the filling mechanism 7 to the cutting mechanism 8 with each other. , The content P that continues until cutting by the cutting mechanism 8
The predetermined braking force B may be automatically calculated and set according to the weight of the continuous packaging bag including the.

Further, in the embodiment of the present invention, an example in which a smooth braking force change is imparted to the film F by performing the braking force adjustment processing in step S7 at time intervals of 0.1 seconds is an example. However, the present invention is not limited to this, and the braking force adjustment process may be performed stepwise at time intervals of 0.5 seconds, for example. Further, the time interval may be changed by the setting means.

[0043]

Industrial Applicability According to the present invention, a film transferred from an original film is vertically and horizontally sealed to form a packaging bag,
Regarding a filling and packaging apparatus for filling contents into the packaging bag and a control method thereof, a filling and packaging apparatus capable of performing good film transfer without the need for complicated and complicated braking force adjustment for film transfer and its control A method can be provided.

[Brief description of drawings]

FIG. 1 is an overall plan view of an embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of control means according to the embodiment of the present invention.

FIG. 3 is a flowchart showing a processing method of the control means according to the embodiment of the present invention.

FIG. 4 is a diagram showing a timing of braking force adjustment based on the start of filling according to the embodiment of the present invention.

[Explanation of symbols]

1A original film 7 Filling mechanism (filling means) F film K1 setting means K2 filling start means K3 control means K4 First braking means (braking means) K5 Second braking means (braking means) P packaging bag W contents

Continued front page    F-term (reference) 3E050 AA02 AB02 AB08 BA01 BA02                       BA11 CA01 CB01 CB04 DB05                       DD04 DF02 FB01 FB07 GB01                       HB06 HB09

Claims (5)

[Claims] 1. A filling and packaging apparatus for forming a packaging bag by vertically and horizontally sealing a film transferred from a film original film, and filling the contents in the packaging bag. Braking means for braking against, filling means for filling the contents in the packaging bag, filling start means for accelerating the start of filling of the contents by the filling means, and filling of the contents by the filling start means And a control means for controlling the braking means so that the film is braked with a predetermined braking force after a predetermined time from the start of the filling and packaging apparatus. 2. The control means controls the braking means so as to increase the braking force in stages until the predetermined braking force is reached after the predetermined time has elapsed since the filling of the contents was started by the filling start means. Claim 1 characterized by the above.
The filling and packaging device according to. 3. According to the packaging form of each type of the packaging bag,
The filling and packaging apparatus according to claim 1 or 2, further comprising a setting unit capable of changing the predetermined time and the predetermined braking force. 4. A method of controlling a filling and packaging apparatus, wherein a film transferred from an original film is vertically and horizontally sealed to form a packaging bag, and the contents are filled in the packaging bag.
Braking means for braking the transferred film,
A filling means for filling the contents in the packaging bag and a filling start means for accelerating the filling of the contents by the filling means are provided, and the filling start of the contents is started according to the input state of the filling start means. The filling and packaging apparatus is characterized by controlling the braking means so that the film is braked with a predetermined braking force after a predetermined time has elapsed from the start of the filling of the contents. Control method. 5. The control of the filling and packaging apparatus according to claim 4, wherein the predetermined time period and the predetermined braking force are set according to a packaging mode for each type of packaging bag using a setting means. Method.