JPH09295604A - Three-way seal packaging method with film and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a three-way sealed packaging bag in different packaging bag length corresponding to each of longitudinal sizes of different articles to be packaged, respectively, by computing the distance of the movement of lateral sealers on the basis of a specific equation in the case where, after an article left a former is longitudinally sealed, lateral sealing is applied thereto. SOLUTION: When a sensor 10 detects that an article 11 to be packaged is set at a predetermined position on a former 13, a packaging start signal is generated, and, when the article 11 is transferred toward a longitudinal sealer 16, the terminal end of the article 11 is detected, and a terminal end signal is generated. After the longitudinal sealer 16 is driven by a portion of an overlapping part according to the reception of the article terminal end signal, it is stopped. Then, lateral sealers 17a, 17b are moved in a longitudinal direction by the distance of movement which satisfies an equation of Mv-|Lp- Sp.t+C+D}N|=0 (wherein Mv denotes the distance of movement, Lp denotes speed, t denotes the time between the packaging start signal and the article terminal end signal, C denotes the longitudinal distance between the predetermined position and the detected position of the article, D denotes the overlapping part, and N denotes a positive integer of two or more), and lateral sealing is applied.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-way seal film packaging machine, and more particularly to a three-way seal film packaging machine capable of forming a three-way seal packaging bag with different packaging bag lengths corresponding to different longitudinal dimensions of the articles to be packaged. Related to packaging machines.

[0002]

2. Description of the Related Art Conventionally, a package film is wrapped with an object to be packaged, and a vertical sealer is welded and a horizontal sealer (end sealer).
There is known a film wrapping machine that forms a three-sided seal wrapping bag having a predetermined width according to the longitudinal dimension of the packaged object by welding and fusing (Japanese Patent Office Publication 53-2.
19 [2568] Well-known and common technology collection (packaging industry), No. 3
1 page).

As shown in FIG. 14, this film packaging machine has a feed conveyor shaft 102a 'for driving a feed conveyor 102a to which an attachment 101 for feeding the article to be wrapped 100 is attached, horizontal sealers 103, 103', and vertical sealers. Reference numeral 104 is a motor 107, a transmission 108, and a speed reducer 1.
13, electromagnetic clutch / brake unit 111, shaft 10
5 is driven. A cam 119 for turning on / off the limit switch 120 is attached to the shaft 105. The to-be-packaged object 100 is covered by the film 109 in the film 115, and the vertical sealer 104 is welded to perform vertical sealing to form a tubular film.
Auxiliary conveyor 117, 117a driven by 02 '
Auxiliary conveyer is used to form a three-way seal bag for each bag length having a predetermined width according to the longitudinal dimension of the object to be packaged 100 by welding and fusing the horizontal sealers 103, 103 ′, and the delivery conveyor shaft 11
It is unloaded from the delivery conveyor 114 driven by 4 '.

In this case, a photoelectric detecting device 112 for detecting the register mark 116 of the film 115 is provided. The electromagnetic clutch of the unit 111 is the photoelectric detection device 11
It is made to be excited by the signal of 2, and the electromagnetic brake is made to be deenergized. The signal from the limit switch 114 causes the electromagnetic clutch of the unit 111 to be disengaged, and at the same time the electromagnetic brake is excited. Feeding roller 1
06, 106 'and the feed length of the film 115 of the auxiliary conveyor 117, 117a is set to 1 of the horizontal sealer 103, 103'.
Continuously variable transmission 110 so that the speed is slightly reduced with respect to rotation.
Adjust

[0005]

In such a film packaging machine, the feeding speed of the feed conveyor 102a is made higher than the feeding speed of the film 115, and the article 100 to be packed is extruded and fed by the attachment 101, and is fed from the feed conveyor 102a. Handed over to the Foma 109. However, depending on the nature and type of the object to be packaged 100, particularly in the case of difficult-to-carry items such as soft items such as Japanese and Western confectioneries and loose items such as vegetables, the speed difference between the two may cause the transfer from the supply conveyor 102a to the former 109. However, there is a problem in that it cannot always be conveyed normally due to friction.

Further, in such a film packaging machine, it is necessary to change the vertical dimension depending on the property and type of the article to be packaged 100. In this case, the vertical distance between the foamer 109 and the horizontal sealers 103 and 103 'is 1
Must be an integral multiple of the vertical dimension of 00. Therefore, when the vertical dimension of the article to be packaged 100 is to be changed, the formula 1 should be satisfied so that this integral multiple relationship is satisfied.
It is necessary to change the position of 09 and replace it with the supply conveyor 102a to which the attachment 101 corresponding to the vertical dimension of the article to be packaged 100 is attached. There is a problem that such a position change and a conveyor exchange require extremely complicated work. Moreover, even when the vertical dimension of the packaging bag is changed, the horizontal sealers 103 and 103 'must be welded and fused at an intermediate position between the packaging bag lengths to form a packaging bag of a predetermined width. It is extremely troublesome to position the horizontal sealers 103 and 103 'by welding at the intermediate position between the bag length and the bag length.

The present invention has been made in order to solve such a problem, and is capable of forming a three-sided seal packing bag with different packing bag lengths corresponding to different longitudinal dimensions of a packaged product. It is an object of the present invention to provide a seal film packaging machine.

[0008]

In order to achieve this object, a three-way seal film packaging method according to the present invention is a method of encapsulating an object to be packaged in a packaging film with a former, and welding a vertical sealer and a horizontal sealer to melt and melt it. In a three-sided seal film packaging method for forming a three-sided seal packaging bag having a predetermined packaging bag length including the overlapping portion of the packaging film according to the vertical dimension of the packaged object, the starting end of the packaged object is placed on the former at the predetermined position. By detecting that the packaged object is placed, the packaged object placement signal is generated, and when the packaged object placement signal is generated, the packaging is started and the packaging start signal is generated. , When the object to be packaged is conveyed from a predetermined position toward the vertical sealer, the end of the object to be packaged is detected to generate a signal to end the object to be packaged, and the vertical sealer is driven by the packaging start signal to output the signal to end the object to be packaged. To receive Then, the horizontal sealer is moved in the vertical direction by a moving amount that substantially satisfies the following formula calculated from the time between the packaging start signal and the end signal of the object to be packaged. | Lp- {Sp · t + C + D} N | = 0 (where Mv is the movement amount, Lp is the vertical distance between the predetermined position and the horizontal sealer, Sp is the line speed, and t is between the packaging start signal and the package end signal. Time, C is the vertical distance between the predetermined position and the detection position of the packaged object, D is the overlapped portion, and
= L-d, L is the length in the vertical direction of the three-side sealed bag, d is the length in the vertical direction of the packaged object, and N is a positive integer of 2 or more. ), The horizontal sealer is driven for one horizontal seal cycle while the vertical sealer is stopped, and the horizontal sealer is stopped while the vertical sealer is driven.

Also, the three-side seal film packaging machine according to the present invention wraps an object to be packaged in a packaging film by a former, and welds the longitudinal sealer and the transverse sealer to melt and fuse the packaging film according to the longitudinal dimension of the object to be packaged. In a three-sided seal film packaging machine that forms a three-sided seal packaging bag having a predetermined packaging length including the overlapped portion, the packaged object is placed by placing the starting end of the packaged object on the former at the predetermined position. A sensor that detects the presence of a package and generates a package placement signal, detects the end of the package when the package is conveyed from a predetermined position toward the vertical sealer, and generates a package end signal. And a packaging start button that starts packaging when a packaging object placement signal is generated and generates a packaging start signal, and a vertical sealer is driven by the packaging start signal, and the stacking unit is received by receiving the packaging object end signal. Minutes of Vertical sealer driving means for stopping after driving the horizontal sealer and horizontal sealer movement for moving the horizontal sealer in the vertical direction by a movement amount that substantially satisfies the following formula calculated from the time between the packaging start signal and the end signal of the object to be packaged. Means and Mv− | Lp− {Sp · t + C + D} N | = 0 (where Mv is the movement amount, Lp is the vertical distance between the predetermined position and the horizontal sealer, Sp is the line speed, t is the packaging start signal and The time between package end signals, C is the vertical distance between the predetermined position and the detection position of the packaged object, D is the overlapping portion, and D
= L-d, L is the length in the vertical direction of the three-side sealed bag, d is the length in the vertical direction of the packaged object, and N is a positive integer of 2 or more. ) A horizontal sealer drive means is provided for driving the horizontal sealer for one horizontal seal cycle during the period when the vertical sealer is stopped and for stopping the horizontal sealer during the period when the vertical sealer is driven.

The three-way seal film packaging machine having the above-described structure wraps the article to be packaged in the packaging film by the former, and performs packaging according to the longitudinal dimension of the package by welding the vertical sealer and the transverse sealer. A three-way seal bag having a predetermined bag length including a film overlapping portion is formed.
In this case, the sensor detects that the article to be packaged is placed by placing the starting end of the article to be packaged on the former at the predetermined position, and generates a signal to place the article to be packaged.

When the package start signal is generated by the packaging start button, packaging is started and a packaging start signal is generated. When the object to be packaged is conveyed from the predetermined position toward the vertical sealer, the end of the object to be packaged is detected and a signal to end the object to be packaged is generated. The vertical sealer driving means drives the vertical sealer in response to a packaging start signal, and when the package end signal is received, drives the vertical sealer by the overlap portion and then stops it.

The horizontal sealer moving means moves the horizontal sealer in the vertical direction by a moving amount that substantially satisfies the following formula calculated from the time between the packaging start signal and the package end signal. Mv- | Lp- {Sp · t + C + D} N | = 0 (where Mv is the movement amount, Lp is the vertical distance between the predetermined position and the horizontal sealer, Sp is the line speed, t is the packaging start signal and the end of the packaged object). The time between the signals, C is the vertical distance between the predetermined position and the detection position of the packaged object, D is the overlapping portion, and D
= L-d, L is the length in the vertical direction of the three-side sealed bag, d is the length in the vertical direction of the packaged object, and N is a positive integer of 2 or more. The horizontal sealer driving means drives the horizontal sealer for one horizontal seal cycle while the vertical sealer is stopped, and stops the horizontal sealer while the vertical sealer is driven. In this way, it is possible to form the three-sided sealed packaging bag with different packaging bag lengths corresponding to the respective different longitudinal dimensions of the package.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the three-way seal film packaging method and packaging machine of the present invention will be described in detail below with reference to the drawings. As shown in FIG.
A three-way seal film packaging method according to the present invention and a laterally inverted pillow three-way seal film packaging machine for carrying out the method include a former 13 (FIG. 2) for packaging an object 11 to be packaged.
It is wrapped in 4 and conveyed by the catch roller 15, and the vertical sealer 1
A three-sided sealed packaging bag having a predetermined packaging bag length L including the overlapping portion D of the packaging film 14 according to the longitudinal dimension d (FIG. 1 (b)) of the object to be packaged 11 by the welding of No. 6 and the welding of the horizontal sealers 17a, 17b. 11a is formed.

The terms vertical and vertical are used in FIG.
In (a), the conveyance direction (arrow 14a) of the packaging film 14 and the to-be-packaged object 11 is shown, and the term of a horizontal direction and a horizontal direction shows a vertical direction and a direction orthogonal to the vertical direction (perpendicular to the paper surface). Further, in FIG. 1B, the transport direction (arrow 14a) of the article to be packaged 11 is shown, and the terms horizontal and horizontal directions indicate the vertical direction and the direction orthogonal to the vertical direction (perpendicular to the paper surface). FIG.
In (b), the terms used in this specification will be explained. D is the vertical dimension of the article to be packaged 11, packaging L is the packaging bag length, D is the overlapping portion, and D = L-d = (11d + 11e).
* 2, 11d is a so-called "margin", and 11e is a packaging margin.

The three-sided seal film packaging machine has a table 1 which assists in placing the article 11 to be packaged on the former 13.
3c (FIGS. 1 (a) and 2), an operation handle 16a for operating an up / down position adjusting mechanism (not shown) for integrally adjusting the vertical position of the catch roller 15 and the vertical sealer 16
(FIG. 2) and are provided. The three-sided seal film packaging machine includes a center conveyor 18 for assisting the transfer of the article 11 to be packaged in the packaging film 14 between the former 13 and the horizontal sealers 17a and 17b, and a three-sided seal package in which the article 11 is packaged. Carry-out conveyor 19 for carrying out the bag 11a
And

As shown in FIG. 3, the starting end 1 of the article 11 to be packaged
1b is placed on the former 13 from the table 13c at its predetermined position 13a (FIG. 2) to detect that the article 11 to be packaged is placed, and the article placement signal Sa is generated, The package 11 is moved from the predetermined position 13a to the vertical sealer 16
A sensor 10 that detects the end 11c of the article 11 to be packaged when it is conveyed toward the package 11 and generates a package end signal Sb;
A packaging start button 10a for starting packaging and generating a packaging start signal Sc when the packaged object placement signal Sa is generated.

The three-way seal film packaging machine drives a catch roller 15 and a vertical sealer 16 at a line speed Sp by a packaging start signal Sc and stops them by a package end signal Sb. It has an Mb and a vertical sealer drive circuit 21.
The three-sided seal film packaging machine has horizontal sealers 17a and 17b.
Is a movement amount Mv that substantially satisfies the following formula calculated from the time t between the packaging start signal Sc and the package end signal Sb.
A horizontal sealer moving servomotor Ma and a horizontal sealer moving drive circuit 12 are provided as the horizontal sealer moving means 28 for moving only in the vertical direction.

Mv− | Lp− {Sp · t + C + D} N | = 0 where Mv is the movement amount, Lp is the vertical distance between the predetermined position 13a and the horizontal sealers 17a and 17b, and Sp is the packaging film 14 to be packaged. Line speed to convey with the object 11,
t is the time between the packaging start signal Sc and the end signal Sb of the package, C is the vertical distance between the predetermined position 13a and the detection position 13b of the package 11 detected by the sensor 10, and D is the overlapping portion, and D = L- d and L are the length of the three-sided sealed bag in the vertical direction,
d is the vertical dimension of the article to be packaged 11, and N is a positive integer of 2 or more.

Here, the predetermined position 13a and the lateral sealer 1
The vertical distance Lp between 7a and 17b is a design constant determined by how long the length of the package 11 to be packaged 11 is handled. The longitudinal distance C between the predetermined position 13a and the detection position 13b of the object to be packaged 11 by the sensor 10 also determines the position on the former 13 where the starting end 11b of the object to be packaged 11 is placed, and the sensor 10 of the object to be packaged 11. Is a design constant that is determined by which position the detection position 13b is set. Overlapped portion D = L−d [= (11d + 11
e) * 2], 11d is a so-called "glue margin" of the three-way seal bag 11a, and 11e is a wrap margin. {Sp ・
t + C + D} becomes equal to the lengthwise packaging length L of the three-sided sealed packaging bag.

In addition, the three-sided seal film packaging machine has the horizontal sealers 17a and 17b while the vertical sealer 16 is stopped.
Is driven for one horizontal seal cycle Ta (FIG. 13), and the horizontal sealers 17a, 17 are driven while the vertical sealer 16 is being driven.
As a horizontal sealer drive means 22 for stopping b, a horizontal sealer drive motor Mc and a horizontal sealer drive circuit 23 are provided.

A vertical sealer drive circuit 21 of the vertical sealer drive means 20, a horizontal sealer drive circuit 23 of the horizontal sealer drive means 22,
And a horizontal sealer moving drive circuit 1 for the horizontal sealer moving means 28.
2 is controlled by a central processing unit (CPU) 24.
The central processing unit 24 includes a data storage device 25, a data input device 26, and a data display device 27 (FIG. 2). The vertical distance C is stored in the data storage device 25 in advance.

As shown in FIGS. 4 to 7, the horizontal sealer driving means 22 includes horizontal sealers 17a and 17b, and the horizontal sealer moving body 4 is used.
It is attached to brackets 30a and 30b which are bridged to four guide rods 29 which are erected on the upper part of FIG. The brackets 30a and 30b move from the rotational movement of the lateral sealer drive motor Mc (FIG. 3) to the cranks 31a and 31b, respectively.
31c and 31a, 31d separate from each other (FIG. 4),
It slides along the guide rod 29 so as to approach (FIG. 7), and is converted into linear motion and driven.

In this case, as shown in FIGS. 8 to 9, the brackets 30a and 30b approach each other and the horizontal sealers 17a and
The cam 3 attached to the bracket 30b when the 17b comes into contact with the packaging film 14 to weld and cut it (FIG. 9).
2 and the actuator 35 integrally formed with the cam follower 34 attached to the carry-out conveyor section 33 separates the carry-out conveyor 19 from the center conveyor 18, and the horizontal sealer 17b rises in the space to move the horizontal sealer 17b.
Contact with a.

In the horizontal sealer moving mechanism 28, as shown in FIGS. 4 to 5 and 7 to 10, a horizontal sealer moving servomotor Ma is attached to the horizontal sealer moving base 44, and the driving force of the horizontal sealer moving servomotor Ma is set. Drive bevel gear 40 rotated by a shaft
A driven bevel gear 41a that meshes with the drive bevel gear 40, a driven shaft 41b connected to the driven bevel gear 41a, and a driven shaft 4
The horizontal sealer operation pinion 41 fixed to 1b and the rack 4 fixed to the horizontal sealer moving body 43 and vertically moved on the horizontal sealer moving base 44 by the horizontal sealer operation pinion 41.
Consists of two.

In the three-sided seal film packaging machine constructed as described above, the operator (worker) sets the line speed Sp from the data input device 26 of the central processing unit 24 and the overlapping portion D = L-d of the three-sided seal packaging bag 11a. Input each (Fig. 11). Line speed Sp and overlapping portion D = L-
d is stored in the data storage device 25 of the central processing unit 24 and displayed on the data display device 27.

The operator (worker) uses the packaging film 14
From former 13 to catch roller 15 and vertical sealer 16
In advance, the former 13 is used to prepare a three-way seal bag for covering the article 11 with the packaging film 14 by the former 13. The heater (not shown) of each sealer is pre-energized and its temperature is controlled so that the packaging film 14 can be welded by the vertical sealer 16 and welded by the horizontal sealers 17a and 17b.

In the sensor 10, the operator (worker) places the starting end 11b of the article 11 to be packaged on the former 13 from the table 13c at a predetermined position 13a (FIG. 2) at the packaging film 1.
By mounting the packaged object 4 on the package 4, the packaged object 11 is detected to generate the packaged object mounting signal Sa (FIG. 3). If the operator (worker) presses the packaging start button 10a while the packaged object placement signal Sa is generated, the packaging is started and the packaging start signal Sc is generated. Central processing unit (CPU) 24 receives both signals.

The central processing unit (CPU) 24 receives the packaging start signal Sc and controls the vertical sealer drive circuit 21 of the vertical sealer drive means 20 to line the catch roller 15 and the vertical sealer 16 via the vertical sealer drive servomotor Mb. Drive at speed Sp. The sensor 10 has been packaged and has been packaged 11
When the sheet is conveyed from the predetermined position 13a toward the vertical sealer 16, the end 11c of the packaged object 11 is detected and the packaged product end signal Sb is generated.

The central processing unit (CPU) 24 receives the package end signal Sb and controls the vertical sealer drive circuit 21 of the vertical sealer drive means 20 to control the catch roller 15 and the vertical sealer 16 via the vertical sealer drive servomotor Mb. Is driven for the overlapped portion D of the three-sided seal packaging bag 11a and then stopped. The central processing unit (CPU) 24 receives the packaging start signal Sc and the package end signal Sb, and receives the data C, Sp, D and the data storage device 25 stored in the data storage device 25.
Packaging start signal Sc according to the program stored in
Then, a movement amount Mv that substantially satisfies the following equation calculated from the time t between the package end signal Sb is calculated.

Mv− | Lp− {Sp · t + C + D} N | = 0 where Mv is the movement amount, Lp is the vertical distance between the predetermined position 13a and the horizontal sealers 17a and 17b, and Sp is the packaging film 14 to be packaged. Line speed to convey with the object 11,
t is the time between the packaging start signal Sc and the end signal Sb of the package, C is the vertical distance between the predetermined position 13a and the detection position 13b of the package 11 detected by the sensor 10, and D is the overlapping portion, and D = L- d and L are the length of the three-sided sealed bag in the vertical direction,
d is the vertical dimension of the article to be packaged 11, and N is a positive integer of 2 or more.

In performing this calculation, the central processing unit (C
PU) 24 is a vertical dimension d of the article 11 to be packaged.
N = 2, 3 ...
It is possible to form v to obtain the three-sided sealed wrapping bag 11a with different wrapping bag lengths L. The central processing unit (CPU) 24 controls the lateral sealer moving drive circuit 12 of the lateral sealer moving means 28 to control the lateral sealer moving servomotor Ma, the driving bevel gear 40, the driven bevel gear 41a, the driven shaft 41b, and the lateral sealer operating pinion 4.
1. The horizontal sealers 17a and 17b are driven via the rack 42 and moved in the vertical direction by the movement amount Mv.

Lp- {Sp.t + in absolute value symbol ||
If C + D} N is positive, the horizontal sealers 17a and 17b move to the former 13 side, and if negative, they move to the opposite side (see FIG. 1).
2) When the horizontal sealers 17a and 17b are moved by the moving amount Mv, the horizontal sealers 17a and 17b are the packaging bags 11 having the packaging bag length L.
A bag having a predetermined width can be produced by welding and fusing at an intermediate position between a and the bag 11a. Moreover, this movement amount M
In v, the welding position of the horizontal sealers 17a and 17b is the bag length L.
It can be adjusted so as to come to an intermediate position between the packaging bags 11a and 11a. The horizontal sealer moving mechanism 28
1 of horizontal sealers 17a and 17b that can be moved by
10 shows the maximum vertical distance Lpmax and the minimum vertical distance Lpmin with respect to the predetermined position 13a on the upper side of FIG.

The central processing unit 24 comprises the horizontal sealer driving means 2
2 horizontal sealer drive circuit 23 to horizontal sealer drive motor Mc
Is driven to drive the horizontal sealers 17a and 17b for one horizontal seal cycle (period Ta, FIG. 13) during a part or all of the period in which the vertical sealer 16 is stopped.
The horizontal sealers 17a and 17b are stopped, that is, intermittently moved during the period in which is driven. In this case, the horizontal sealer 17
a and 17b are brackets 30 bridged to four guide bars 29 (FIGS. 4 to 7) erected on the horizontal sealer moving body 43.
a and 30b respectively, and bracket 30a,
Reference numeral 30b indicates cranks 31a, 31b, 31c and 31 from the rotational movement of the lateral sealer drive motor Mc (FIG. 3), respectively.
By a and 31d, they slide along the guide rod 29 so as to move away from each other (FIG. 4) and approach each other (FIG. 7), and the linear motion is converted for driving.

The brackets 30a and 30b (see FIG. 8)
9 to 10) come close to each other and the horizontal sealers 17a and 17b come into contact with each other to weld and fuse the packaging film 14 (FIG. 9), the cam 32 attached to the bracket 30b and the conveyer section 33 are attached. The unloading conveyor 1 by the actuator 35 integrally formed with the cam follower 34
9 is separated from the center conveyor 18, and the horizontal sealer 17b rises in the space and contacts the horizontal sealer 17a to form a horizontal seal by welding and fusing. In addition, in FIG. 13, Tb represents the period of the three-sided sealed packaging bag, and Tc represents the adjustment period in which the three-sided sealed packaging bag 11a having a predetermined packaging bag length L according to the vertical dimension d of the packaged object is prepared.

After the horizontal sealers 17a and 17b are welded and melted, a three-way seal bag 11a having a predetermined bag length L corresponding to the longitudinal dimension d of the article 11 is formed, and after being carried out from the carry-out conveyor 19 (see FIG. (A)), if the operator (worker) places the starting end 11b of the article 11 to be packaged on the former 13 from the table 13c at the predetermined position 13a (FIG. 2) on the packaging film 14, the packaging start button 10a. Press to enter the next packaging cycle as above.

In this way, the object 11 to be packaged is wrapped by the former 13 in the packaging film 14 and fed forward by the catch roller 15, and the vertical sealer 16 is welded. In this case, the center conveyor 18 assists the conveyance of the article 11 to be packaged which is wrapped with the packaging film 14. As described above, according to the three-way seal film packaging machine of the present invention, the object to be packaged is wrapped in the packaging film by the former, and the longitudinal sealer is welded and the horizontal sealer is welded and melted. Correspondingly, it is possible to form a three-way sealed packet with different packet lengths.

Although the present invention has been described with respect to the above-mentioned three-way seal film packaging machine for the lateral inverted pillow three-way seal film packaging, the present invention can be similarly applied to the horizontal positive pillow three-way seal film packaging. Further, in the above-mentioned three-way seal film packaging machine, the horizontal sealer is attached to the brackets bridged to the four guide bars erected on the horizontal sealer moving body, respectively, and the brackets are attached to the rotary motion of the horizontal sealer drive motor. Although it was configured to slide along the guide rods so that they would move away from and approach each other by the crank and each of them, the linear motion was converted and driven, but the same applies even if a rotary or box motion lateral sealer is used. Applicable to

Further, in the above-mentioned three-sided seal film packaging machine, the starting end of the article to be packaged is manually placed on the former at its predetermined position, but it is packaged by using the supply conveyor connected to the former. It is also possible to place the starting end of the object on the former at the predetermined position. Further, in the above-described three-sided seal film packaging machine, the function of the catch roller for feeding the packaging film enclosing the article to be packaged forward can be integrated into the vertical sealer.

[0039]

As is apparent from the above description, according to the three-sided seal film packaging machine of the present invention, the three-sided seal packaging bag has different packaging bag lengths corresponding to the different longitudinal sizes of the articles to be packaged. Can be formed.

[Brief description of drawings]

FIG. 1 (a) is a side view showing a three-way seal film packaging machine according to the present invention, and FIG. 1 (b) is an explanatory view of an object to be packaged and a bag.

FIG. 2 is a perspective view showing a part of the three-way seal film packaging machine of the present invention.

FIG. 3 is a block diagram showing a control system of the film packaging machine of the present invention.

FIG. 4 is a partial elevation view showing a horizontal sealer stop position and a horizontal sealer moving mechanism of the film packaging machine according to the present invention.

FIG. 5 is a partial side view showing a horizontal sealer stop position and a horizontal sealer moving mechanism of the film packaging machine according to the present invention.

FIG. 6 is a partial plan view showing a lateral sealer of the film packaging machine according to the present invention.

FIG. 7 is a partial elevational view showing a drive position of the horizontal sealer and a horizontal sealer moving mechanism of the film packaging machine according to the present invention.

FIG. 8 is an explanatory view showing the stop position of the horizontal sealer and the operations of the auxiliary conveyor and the carry-out conveyor of the film packaging machine according to the present invention.

FIG. 9 is an explanatory view showing the drive position of the horizontal sealer and the operations of the auxiliary conveyor and the carry-out conveyor of the film packaging machine according to the present invention.

FIG. 10 is an explanatory view showing the operation of the lateral sealer moving mechanism of the film packaging machine according to the present invention.

FIG. 11 is a timing chart showing the operation of the film packaging machine according to the present invention.

FIG. 12 is an explanatory view showing the operation of the lateral sealer moving mechanism of the film packaging machine according to the present invention.

FIG. 13 is a timing chart showing the operation of the film packaging machine according to the present invention.

FIG. 14 is a side view showing a conventional three-way seal film packaging machine.

[Explanation of symbols]

10 ... ・ Sensor 10a ・ ・ ・ ・ Packing start button 11 ・ ・ ・ ・ ・ ・ Packaged object 11a ・ ・ ・ ・ Three-sided seal packaging bag 11b ・ ・ ・ ・ ・ ・ Packaged object Start end 11c ··· End of object to be packaged 13 ··· Former 13a ··· Predetermined position of former 13b ··· Detection position 14 ··· Packaging film 16 ・ ・ ・ ・ ・ ・ Vertical sealers 17a, 17b ・ ・ ・ ・ ・ ・ Horizontal sealer 20 ・ ・ ・ ・ Vertical sealer drive means (21 ・ ・ ・ ・ ・ ・ ・ ・ Vertical sealer drive circuit, Mb ・ ・ ・ ・ ・・ Vertical sealer drive servomotor) 22 ・ ・ ・ ・ ・ ・ Horizontal sealer drive means (23 ・ ・ ・ ・ ・ ・ Horizontal sealer drive circuit, Mc ・ ・ ・ ・ ・ ・ ・ ・ Horizontal sealer drive motor) 28 ・ ・ ・ ・ ・ ・Horizontal sealer moving means (12 ・ ・ ・ ・ ・ ・ Horizontal sealer movement drive circuit, Ma ・ ・ ・ ・ Horizontal sealer movement Bomota, 40 ...... drive bevel gear, 41a ··
・ ・ ・ Driven bevel gears, 41 ・ ・ ・ Horizontal sealer operation pinion, 4
2 ・ ・ ・ ・ Rack) d ・ ・ ・ ・ ・ ・ Longitudinal dimension of the packaged item D ・ ・ ・ ・ ・ ・ Overlapped part of the bag L ・ ・ ・ ・ Vertical direction of the three-sided sealed bag Bag length Mv ··· Movement amount Lp ··· Vertical distance between former and horizontal sealer N ··· A positive integer of 2 or more Ta ··· Period (1 Horizontal seal cycle) Sa ・ ・ ・ ・ Packaging object placement signal Sb ・ ・ ・ ・ Packaging object end signal Sc ・ ・ ・ ・ Packaging start signal Mv ・ ・ ・ ・ Movement amount Lp ・... Vertical distance between predetermined position and horizontal sealer Sp ... Line speed t ... Time between packaging start signal and package end signal C Longitudinal distance between specified position and detected position of package

Claims (2)

[Claims] 1. A predetermined packaging bag containing a polymerized portion of the packaging film according to a longitudinal dimension of the packaging film by encapsulating the packaging film in a packaging film with a former and welding the vertical sealer and the transverse sealer. In a three-sided seal film packaging method for forming a long three-sided seal wrapping bag, by detecting that the packaged object is placed by placing the starting end of the article to be packaged on the former at the predetermined position. Generates a package placement signal, generates a packaging start signal by starting packaging when the package placement signal is generated, and the package goes from the predetermined position toward the vertical sealer. When conveyed, the end of the packaged object is detected to generate a packaged product end signal, the vertical sealer is driven by the packaging start signal, and only the overlapping portion is received by receiving the packaged product end signal. After driving The horizontal sealer is stopped, and the horizontal sealer is moved in the vertical direction by a moving amount that substantially satisfies the following formula calculated from the time between the packaging start signal and the package end signal, Mv- | Lp- {Sp. t + C + D} N | = 0 (where, Mv is the movement amount, Lp is the vertical distance between the predetermined position and the horizontal sealer, Sp is the line speed, and t is between the packaging start signal and the package end signal. Time, C is the vertical distance between the predetermined position and the detection position of the object to be packaged, D is the overlapping portion, D = L-d, L is the length of the three-way seal bag in the lengthwise direction, and d is the length. The vertical dimension of the package, N is a positive integer greater than or equal to 2.) While the vertical sealer is stopped, the horizontal sealer is driven for one horizontal seal cycle to drive the vertical sealer. The horizontal sealer is stopped during a certain period The three-sided seal film packaging method. 2. A predetermined packaging bag containing a polymerized portion of the packaging film according to the longitudinal dimension of the packaging film by wrapping the packaging film in a packaging film with a former and fusing the vertical sealer and the transverse sealer. In a three-sided seal film packaging machine that forms a long three-sided seal bag, by detecting that the object to be packaged is placed by placing the starting end of the article to be packaged on the former at the predetermined position. A sensor that generates a package placement signal and detects the end of the package when the package is conveyed from the predetermined position toward the vertical sealer, and generates a package end signal. A packaging start button that starts packaging and generates a packaging start signal when the package placement signal is generated, and the vertical sealer is driven by the packaging start signal, and by receiving the package end signal. The heavy Vertical sealer driving means for driving only the number of parts and then stopping the horizontal sealer in the vertical direction by a movement amount that substantially satisfies the following formula calculated from the time between the packaging start signal and the package end signal. Horizontal sealer moving means for moving to Mv- | Lp- {Sp · t + C + D} N | = 0 (where Mv is the moving amount, Lp is the vertical distance between the predetermined position and the horizontal sealer, and Sp is a line). Velocity, t is the time between the packaging start signal and the package end signal, C is the vertical distance between the predetermined position and the detection position of the package, D is the overlapping portion, and D = Ld. , L is the length of the three-way sealed bag in the vertical direction, d is the length of the packaged object in the vertical direction, and N is a positive integer of 2 or more.) The horizontal sealer is in the stopped state. Drive the sealer for one horizontal seal cycle Three-way sealing film packaging machine, characterized in that over la has a transverse sealer drive means for stopping the transverse sealer in the period being driven.