JP3752683B2 - Filling and packaging machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a filling and packaging machine that forms a film wound in a roll shape and fills the packaging bag with a filling material such as a liquid, powder, or viscous substance.
[0002]
[Prior art]
As a filling and packaging machine for filling an object to be filled such as liquid, powder or viscous substance, it is disclosed in, for example, JP-A-1-153410, JP-A-2-4626, or JP-A-2-32929. There is something. This filling and packaging machine has a machine base, and a pair of original shafts are provided on the sides of the machine base, and the original film obtained by winding a film around the original film shaft is held so as to be removable. . The upper part of the machine base is provided with a film guide part and a film folding part, and a vertical seal mechanism (film feeding mechanism), first and second horizontal seal mechanisms and a cutter mechanism are provided on the front part of the machine base from above. Is provided. The filling and packaging machine draws the film from the original fabric by the vertical sealing mechanism, guides the film to the film folding part through the film guide part, and folds the film in the longitudinal direction by the guide provided at the film folding part. Then, the folded end portions of the film are overlapped with each other by a pair of opposing vertical heat seal rolls of the vertical seal mechanism and heat-sealed and sent out. The vertical seal forms the film into a cylindrical shape, and the first horizontal seal The film is laterally sealed with a pair of transverse heat seal rolls facing each other in the mechanism, and the bottom is formed by the transverse seal, whereby, for example, food is filled in the film formed into a bottomed cylindrical shape by a filling nozzle of the filling mechanism. The material to be filled (contents) such as the product is filled, and the film is further fed, and the film is again fed by the horizontal heat sealing roll of the first horizontal sealing mechanism. The side of the bag mouth is laterally sealed to seal the object to be filled, and this lateral seal portion is further pressed again (pressure sealing) by the lateral roll of the second lateral seal mechanism, and then the lateral seal portion is A packaging bag is obtained by cutting with the rotary cutter mechanism.
[0003]
In the filling and packaging machine as described above, the cutter mechanism is composed of a fixed blade body and a rotary blade body, and when cutting a continuous package obtained by vertically and horizontally sealing the film, When the rotary blade rotates once with respect to the fixed blade, the continuous packaging bag is cut into individual packaging bags. The control method in the cutter mechanism of such a filling and packaging machine includes the rotating blade body determined from the film feed speed in the vertical seal mechanism and the seal pitch of the film (horizontal seal interval in the horizontal seal mechanism). In a predetermined time for rotating, the continuous blade is cut by rotating the rotary blade at a substantially constant speed to obtain individual packaging bags. Another control method of the cutter mechanism is to cut the continuous packaging bag by rotating the rotary blade intermittently (repetition of rotation and stop) according to the continuous packaging bag (film) to be sent out. There is something to do.
[0004]
[Problems to be solved by the invention]
The former cutter mechanism control method is a small-capacity packaging bag having a film sealing interval of 50 mm to less than 100 mm, and there is no problem when the film feed speed is high. When producing a large-capacity packaging bag having a pitch exceeding 100 mm, the seal pitch is large and the film feed speed is slow. Therefore, it is determined from the film feed speed and the film seal pitch. The predetermined time in one rotation of the rotary blade is lengthened, and accordingly, the rotational speed of the rotary blade is also reduced. Accordingly, there is a problem in that the film in a state where it is suspended by the second lateral seal mechanism by its own weight including an object to be filled cannot be satisfactorily cut by the low-speed rotation cutting operation of the rotary blade body. Have. Further, in this control method, even when a normal size packaging bag is produced, if the film feeding speed is slowed down, the rotational speed of the rotary blade body is slowed down accordingly. Similar to the case of producing a bag, there is a problem that a good cutting operation of the film cannot be obtained.
[0005]
Further, the latter cutter mechanism control method is an intermittent control in which the rotating blade body is instantaneously rotated at a high speed from the stopped state when the seal pitch is narrowed and the film feed speed is increased. There is a problem in that the rotation control of the blade cannot follow the film feed speed, and the productivity in the filling and packaging machine cannot be improved.
[0006]
Therefore, the present invention pays attention to the above-mentioned problems, and enables good cutting or partial cutting even when producing large-capacity packaging bags or when the film feed rate is low, and also increases productivity. A possible filling and packaging machine is provided.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention is to vertically seal a continuously transported film by a vertical seal mechanism, laterally seal by a horizontal seal mechanism, and cover a continuous packaging bag formed by the vertical seal and the horizontal seal. A filling and packaging machine for filling a filling , comprising a rotary blade body, a film cutting mechanism for cutting or partially cutting the film, a driving means for rotationally driving the rotary blade body, a feeding speed of the film, and the Within the production time per packaging bag depending on the formation interval of the horizontal seal, the cutting speed of the rotary blade that sets the appearance of the cut when cutting the appropriate position of the film or performing partial cutting is set. And a control means for controlling the drive means so as to cut or partially cut the film at the cutting speed; Storage means for storing for each type of the bag is made comprises a.
[0008]
Further, the control means is configured so that the cutting speed of the rotary blade body when performing the cutting or partial cutting of the film is an appropriate high speed that makes the cut face of the film good in the production time. It is set.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below based on a filling and packaging machine shown in the accompanying drawings.
[0013]
1 is a diagram showing the configuration of the filling and packaging machine, FIG. 2 is a diagram showing the packaging state of the film, FIG. 3 is a block diagram showing the circuit configuration of the filling and packaging machine, and FIG. 4 is the operation of the driving means of the film cutting mechanism. FIG.
[0014]
1 and 2, the filling and packaging machine is provided with an original fabric shaft 2 on the side of the machine base 1, and a film original fabric R in which a film F is wound around the original fabric shaft 2 in a roll shape can be attached and detached. The film guide part 3 and the film folding part 4 are disposed at the upper part of the machine base 1, and the vertical seal mechanism 5 and the first and second horizontal seal mechanisms 6, 6 are provided on the front part of the machine base 1 from the upper side. 7, opening notch mechanism (film cutting mechanism) 8 for inserting the opening notch (partial cutting of film F) FN into the side edge seal portion FH of the film F, and cutter mechanism (film cutting mechanism) for cutting the packaging bag FW 9 and 9 respectively.
[0015]
The film F is pulled out from the roll-shaped film original fabric R by the vertical sealing mechanism 5, led out to the film folding portion 4 through the film guide portion 3, and along the longitudinal direction by the folding guide provided in the film folding portion 4. The folded end portions of the film F, that is, the side end seal portions (vertical seal portions) FH of the film F are heat-sealed and sent out by a pair of opposed vertical heat seal rolls of the vertical seal mechanism 5. And the film F formed in the cylindrical shape by the side end seal part FH is heat-sealed in the horizontal direction by a pair of transverse heat seal rolls facing the first transverse seal mechanism 6, and the packaging bag is formed by the transverse seal part FS. A bottom portion to be FW is formed. Thus, the film F formed into a bottomed cylindrical shape is filled with a filling material made of a liquid such as sauce or soy sauce by the filling mechanism 10, and further the film F is sent to the first horizontal sealing mechanism 6 again. The bag mouth portion of the film F is heat-sealed in the horizontal direction by the horizontal heat-sealing roll, and the filling material is sealed. And the film F provided with the horizontal seal | sticker part FS location which heat-sealed the upper and lower sides of the said to-be-filled material in the horizontal direction is pressed again by the horizontal seal | sticker part FS with a pair of horizontal heat seal roll of the 2nd horizontal seal mechanism 7. Is done. The re-pressing pressure of the film F by the second horizontal sealing mechanism 7 may be either heat sealing or a simple pressing pressure that does not apply heat. Next, the opening notch FN is formed by the opening notch forming mechanism 8 on the end edge portion of the side end seal portion FH of the film F, which is filled with the filling material and becomes the continuous packaging bag FW, and the continuous packaging. By cutting the substantially intermediate portion of the lateral seal portion FS of the bag FW by the cutter mechanism 9, individual packaging bags FW are obtained.
[0016]
The opening notch mechanism 8 and the cutter mechanism 9, which are the main parts of the present invention, will be described with reference to FIGS.
[0017]
The opening notch mechanism 8 is disposed below the second lateral seal mechanism 7 and includes a rotary blade body 12 for forming an opening notch FN on a rotary shaft 11 that is rotated by a driving means 10 such as a servo motor. Provided. The opening notch mechanism 8 is configured to rotate the rotary blade 12 one turn within the production time per packaging bag FW determined from the feed speed of the film F and the seal pitch P, which are set arbitrarily, so that the side edge of the packaging bag FW An opening notch FN is formed at a predetermined position of the seal location FH.
[0018]
The cutter mechanism 9 is disposed below the opening notch mechanism 8 and is provided with a rotary blade body 15 on a rotary shaft 14 that is rotated by a driving means 13 such as a servo motor. A fixed blade 17 is provided on a support base 16 provided on the machine base 1. The cutter mechanism 9 continues by rotating the rotary blade 15 once with respect to the fixed blade 17 within the production time per packaging bag FW determined from the feed speed of the film F set arbitrarily and the seal pitch P. The packaged bag FW is separated into individual packaged bags FW.
[0019]
The circuit configuration of the opening notch mechanism 8 and the cutter mechanism 9 will be described. The drive means 10 and 13 of the opening notch mechanism 8 and the cutter mechanism 9 are connected to the control means 18. The control means 18 has an interface for connecting the driving means 10 and 13 and setting means to be described later, and the production time per packaging bag FW is determined by the feed speed of the film F and the seal pitch P which are arbitrarily set. CPU (not shown) for determining the rotational operation patterns of the driving means 10 and 13 for rotationally operating the rotary blade bodies 12 and 15 of the opening notch mechanism 8 and the cutter mechanism 9 to be described later during this production time. , A ROM (not shown) in which a processing program is stored, a RAM (not shown) for temporarily storing calculation results, and the like. The setting means 19 is for setting the feed speed of the film F, the seal pitch P, etc., and is composed of, for example, a keyboard. The storage means 20 corresponds to the packaging form for each product type, such as the material and thickness of the film F, the size of the film F (seal pitch P), the filling amount, the temperature of the seal part in the vertical and horizontal seal mechanisms 5 and 6, etc. The rotational operation pattern is stored in a nonvolatile manner, and is composed of, for example, an EEPROM or a backup RAM. Further, the control means 18 is connected with rotation detection means 21 and 22 comprising proximity sensors, transmission sensors and the like for detecting the rotation of the rotary blade bodies 12 and 15 in the opening notch mechanism 8 and the cutter mechanism 9. Yes. The control means 18 detects each detected object (not shown) made of a metal projection or slit provided on each rotary blade body 12, 15 of each mechanism 8, 9 by each rotation detection means 21, 22. The rotation of each rotary blade 12, 12 can be detected. Further, the control means 18 is connected to a display means 23 made of, for example, a liquid crystal display device for displaying the information set by the setting means 19 and the result of the calculation and the information stored in the storage means 20 by letters, numbers, or the like. ing. In the embodiment of the present invention, the input means and the output means of the opening notch mechanism 8 and the cutter mechanism 9 are connected to the control means 18 so as to control the mechanisms 8 and 9. The means 18 can also be used as a control means for controlling other mechanisms such as the vertical seal mechanism 5 and the first and second horizontal seal mechanisms 6 and 7.
[0020]
Next, the control method in the control means 18 of the opening notch mechanism 8 and the cutter mechanism 9 will be described with reference to FIG. 4, but the control method of the cutter mechanism 9 is an example in order to perform the same control for both mechanisms 8 and 9. The detailed description of the opening notch mechanism 8 will be omitted. In the following description, it is assumed that the film F is fed at a constant speed and is vertically and laterally sealed, and the rotation detecting means 22 for detecting the rotation of the rotary blade 15 of the cutter mechanism 9 is When the blade edge of the rotary blade 15 is closest to the blade edge of the fixed blade body 17, that is, when the continuous packaging bag FW (film F) is cut, a signal “H” is output.
[0021]
The control means 18 calculates the production time per packaging bag FW when the production conditions of the feed speed of the film F and the seal pitch P are input by the setting means 19. This production time corresponds to the time T1 when the rotary blade 15 of the cutter mechanism 9 rotates once.
[0022]
The control means 18 takes a time T1 of the rotation of the rotary blade 15 of the cutter mechanism 9 determined according to the production conditions as a cycle (hereinafter referred to as a rotation cycle) in the rotary blade 15, and the film within the rotation cycle T1. When cutting the proper position of F (substantially central portion of the horizontal seal portion FS) with the cutter mechanism 9, an appropriate cutting speed of the rotary blade 15 is set so that the appearance of the cut by the rotary blade 15 of the film F is good. In this embodiment, the time when the film F is to be cut by the rotary blade 15, that is, the time when the detection signal a output from the rotation detection means 22 is input to the control means 18. t1. At t2... tn, the rotation speed (cutting speed) V1 of the rotary blade 15 is set to an appropriate high speed that makes the cut face of the film F good in the rotation period T1. Therefore, the control means 18 performs acceleration / deceleration control of the driving means 13 so that an appropriate rotation speed V1 that makes the appearance of the cut edge of the film F good is obtained within the rotation period T1. The period T2 in the detection signal a output from the rotation detection unit 22 is coincident with the rotation period T1 of the rotary blade 15.
[0023]
The control unit 18 causes the storage unit 20 to store parameter values for acceleration / deceleration control in the driving unit 13 that rotates the rotary blade 15 described above in accordance with the packaging form for each type of packaging bag FW. Accordingly, when the setting unit 19 inputs a product type code corresponding to the packaging form for each product type, the control unit 18 reads the parameter value corresponding to the product type code from the storage unit 20, and drives the drive unit 13. Acceleration / deceleration control will be performed. In addition, when a new product type code is input in the storage unit 20, the parameter value of the rotary blade 15 based on the production condition input by the setting unit 19 can be newly stored.
[0024]
Next, the control method of the opening notch mechanism 8 by the control means 18 will be briefly described. The control means 18 is time for forming a notch for opening that partially cuts the film F in the film F, for example, a cutter mechanism. 9, when the detection signal a ′ output from the rotation detection means 21 is input to the control means 18. At t2 ′... tn ′, the rotation speed V1 ′ of the rotary blade 12 is an appropriate high speed that makes the appearance of the cut edge of the film F good within the rotation period (production time) T1 ′ determined by the production conditions. Is set to be Accordingly, the control means 18 controls acceleration / deceleration of the driving means 10 so as to obtain an appropriate rotation speed V1 ′ that makes the cut face of the film F good in the rotation period T1 ′. By performing the control, an opening notch FN is formed at a predetermined position of the side end seal portion FH of the continuous packaging bag.
[0025]
As a result of measuring the load torque of the driving means 10 and 13 at the time of cutting the film F and at the time of partial cutting at an appropriate rotation speed (high speed rotation) that makes the appearance of the cut end of the film F described above good, In the cutting and partial cutting control method, the load torque at the time of cutting and at the time of partial cutting is four times the average load torque (the load torque when each driving means 10 and 13 is simply rotating). On the other hand, in the control method according to the embodiment of the present invention, a result was obtained in which the load torque at the time of cutting and at the time of partial cutting was a value less than twice the average load torque. As is clear from this result, since the load torque at the time of cutting and at the time of partial cutting is reduced, when cutting and partial cutting are performed by the rotary blade bodies 12 and 15 that are rotated by the respective drive means 10 and 13. The breaking action given to the film F can be small, so that the appearance of the cut end of the film F can be obtained satisfactorily.
[0026]
Such a filling and packaging machine is such that the rotational speeds V1 and V1 ′ of the rotary blades 12 and 15 of the opening notch mechanism 8 and the cutter mechanism 9 are within the rotation periods T1 and T1 ′ determined by the production conditions. By providing the control means 18 for controlling the driving means 10 and 13 of the opening notch mechanism 8 and the cutter mechanism 9 so that the appearance of the cut surface when cutting F or partly cut is good at an appropriate high speed, While the upper side is supported by the pair of horizontal seal rolls of the second horizontal seal mechanism 7, it is possible to cut or partially cut the continuous packaging bag sent out in a state where the lower side is free without being pulled. Therefore, a beautiful cut can be obtained without roughening the cut surface of the cut edge of the film F by the opening notch mechanism 8 and the cutter mechanism 9, and the quality of the packaging bag FW can be improved.
[0027]
In the filling and packaging machine that performs control in the opening notch mechanism 8 and the cutter mechanism 9, for example, a large-capacity packaging bag FW having a seal pitch P of 100 mm or more and a filling amount exceeding 200 cc is produced. This is particularly effective when the film F is fed at a low speed. This is because, in the case of the above-described state, the rotation cycles of the rotary blades 12 and 15 of the opening notch mechanism 8 and the cutter mechanism 9 become long, so that each rotary blade at a constant speed as in a conventional filling and packaging machine. When the rotary blades 12 and 15 are rotated, the cutting speed of the rotary blades 12 and 15 is reduced, so that the cutting ability of the film F is reduced, and the continuous packaging bag cannot be cut or partially cut well. In addition, if the cutting or partial cutting is not performed well, the continuous packaging bag FW is pulled downward from the second horizontal sealing mechanism 7, and the first and second horizontal sealing mechanisms 6, 6 This is because the lateral seal portion FS of the film F in FIG. 7 is displaced, and the above-described control method is the most effective cutting control.
[0028]
In addition, since the control method described above can be continuously rotated without stopping the rotation of the rotary blade 15 of the cutter mechanism 9, it can be used even when the feeding speed of the film F becomes high. Thus, high-speed production of the packaging bag FW is possible while maintaining good film cutting, and productivity can be improved.
[0029]
In addition, it is possible to maintain a good cutting speed (for example, a high cutting speed) when cutting the film F without depending on the feeding speed of the film F and the sealing pitch of the film F. It is possible to alleviate the adjustment adjustment of the rotating blade body 15 and the fixed blade body 17 in the cutter mechanism 9 and the cutting adjustment of the blade body in the opening notch mechanism 8 and the cutter mechanism 9 which are very troublesome as work. By performing the cutting control, it is possible to regularize the maintenance time of the blade bodies of the mechanisms 8 and 9 according to the packaging form of the packaging bag FW, thereby facilitating maintenance management.
[0030]
Moreover, in the notch mechanism 8 for opening, in the conventional control method, when the rotational speed of the rotary blade 12 becomes low, the formation of the opening notch FN may occur. By performing the above-described control, the notch for opening is formed. A good opening notch FN can be formed without causing FN formation omission.
[0031]
In addition, a storage means for storing a parameter value for determining an operation pattern of the drive means 13 (rotation pattern of the rotary blades 12 and 15) corresponding to the packaging form for each product type is provided. For example, a product code corresponding to the packaging form is set. By inputting by means 19, the parameter value corresponding to the product type can be read, the setup change time for each product type can be shortened, and the operating rate in the filling and packaging machine can be improved.
[0032]
Incidentally, the control means 18 shown in the embodiment of the present invention is such that the rotational speeds V1, V1 ′ of the rotary blades 12, 15 change the film F within the rotation periods T1, T1 ′ determined by the production conditions. Although it was set so that the appearance of the cut surface when cutting was good and appropriate, the packaging form and filling packaging for each type of packaging bag FW such as the material and thickness of the film F, the filling amount of the filling material, etc. Various changes are made depending on the structure of the film cutting mechanism of the machine, and the control means has a cutting speed when cutting the film within the rotation cycle determined by the production conditions, for example, the appearance of the cut end of the film. May be set so as to achieve an appropriate low speed.
[0033]
In the embodiment of the present invention, the opening notch mechanism 8 and the cutter mechanism 9 are used as the film cutting mechanism. However, as another film cutting mechanism, a predetermined position (substantially) of the lateral seal portion FS of the film F is used. There is a perforation forming mechanism for forming a perforation to be partially cut in the center). By applying the present invention also to this perforation forming mechanism, the appearance of the perforated cut can be improved.
[0034]
In the filling and packaging machine according to the embodiment of the present invention, the filling and packaging machine including the vertical sealing mechanism 5 and the first and second horizontal sealing mechanisms 6 and 7, the opening notch forming mechanism 8, and the cutter mechanism 9 is exemplified. However, the filling and packaging machine of the present invention is not necessarily limited to the filling and packaging machine provided with all the above-described mechanisms. For example, the filling and packaging machine includes a vertical sealing mechanism and one horizontal sealing mechanism, and is opened. The filling and packaging machine may be provided with a film cutting mechanism that is one of a notch mechanism and a cutter mechanism.
[0035]
Further, in the embodiment of the present invention, the setting means 19 and the display means 23 for displaying the contents input by the setting means 19 and the production conditions are configured. However, these input means and display means are integrated. You may use the touch panel etc. which were prepared for.
[0036]
【The invention's effect】
The present invention is a filling packaging in which a continuously transported film is vertically sealed by a vertical seal mechanism, is horizontally sealed by a horizontal seal mechanism, and a continuous packaging bag defined by the vertical seal and the horizontal seal is filled with an object to be filled. In the film cutting mechanism for cutting or partially cutting the film, the control means sets an appropriate cutting speed for cutting the proper position of the film or performing partial cutting, and sets the film to the cutting speed. Since the driving means of the film cutting mechanism is controlled so that the film can be cut or partially cut, a good cut or partial cut of the film can be obtained.
[0037]
Further, the present invention is such that the film cutting mechanism is provided with a rotary blade body, and within the production time for producing one packaging bag determined by the control means from the film feed speed and the horizontal seal forming interval. The proper position of the film is set to a cutting speed of the rotary blade suitable for cutting or partial cutting by the cutter mechanism. The control means sets the cutting speed when the film is cut or partially cut by the rotary blade so as to be an appropriate high speed within the production time, and cuts the film at the cutting speed. Alternatively, by controlling the driving means for driving the rotary blade body so as to be partially cut, the continuous packaging bag that is sent out in a state where the lower side is free while the upper side is supported by the lateral sealing mechanism is cut well. It becomes possible.
[0038]
In addition, since the continuous cutting bag can be cut or partially cut by continuously operating (rotating) the film cutting mechanism, the film can be fed at a high speed while maintaining good film cutting. Therefore, the packaging bag can be produced at high speed and the productivity can be improved.
[0039]
In addition, by providing a storage means for storing the parameter value of the driving means according to the packaging form for each type of packaging bag, the setup change time for each type can be shortened, and the operating rate in the filling and packaging machine is improved. [Brief description of the drawings]
FIG. 1 is a diagram showing a filling and packaging machine according to an embodiment of the present invention.
FIG. 2 is a view showing a film packaging state by the same filling and packaging machine.
FIG. 3 is a block diagram showing a circuit configuration of the same filling and packaging machine.
FIG. 4 is a view showing the operation of the driving means of the film cutting mechanism of the same filling and packaging machine.
[Explanation of symbols]
5 Vertical sealing mechanism 6 First horizontal sealing mechanism 7 Second horizontal sealing mechanism 8 Notching mechanism for opening (film cutting mechanism)
9 Cutter mechanism (film cutting mechanism)
10, 13 Driving means 12, 15 Rotating blade 18 Control means 19 Setting means 20 Storage means F Film FH Side end seal portion (vertical seal portion)
FS Side seal part FW Packaging bag

Claims (2)

A filling and packaging machine that vertically seals a continuously transported film by a longitudinal seal mechanism, laterally seals by a lateral seal mechanism, and fills a continuous packaging bag defined by the longitudinal seal and the lateral seal with an object to be filled. ,
A film cutting mechanism comprising a rotary blade and cutting or partially cutting the film;
Drive means for rotationally driving the rotary blade;
The rotary blade having a good appearance when cutting or partially cutting the proper position of the film within the production time per packaging bag depending on the feeding speed of the film and the formation interval of the horizontal seal Control means for setting the body cutting speed and controlling the driving means so as to cut or partially cut the film at the cutting speed;
Storage means for storing the cutting speed for each type of packaging bag;
A filling and packaging machine comprising: The control means is set so that the cutting speed of the rotary blade body when cutting or partially cutting the film is an appropriate high speed that makes the cut face of the film good in the production time. The filling and packaging machine according to claim 1 , wherein

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