JP4672830B2 - Vertical seal cutting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cutting device capable of cutting, for example, vertical seal portions of a plurality of packaging bags formed continuously by a belt-shaped packaging material.
[0002]
[Prior art]
One long packaging film is folded in two or stacked, or two sheets are stacked, and the overlapping side edges are vertically sealed to form a vertical seal, and the top of the stacked packaging film part forming a transverse seal portion by transverse sealing the bottom and, after a predetermined amount filling the contents into the open tubular part of the rear of the transverse seal portion toward the transport direction, a predetermined distance rearward of the transverse seal portion As a filling and packaging machine for continuously producing a hermetic packaging bag by laterally sealing again to form a lateral seal portion, for example, the one disclosed in JP-A-8-48301 is known , According to this, a plurality of rows can be filled and packaged simultaneously through the vertical seal portion, and each row can be separated by including a cutting device comprising a slit mechanism that cuts the vertical seal portion so as to be sandwiched between a pair of blades.
[0003]
[Problems to be solved by the invention]
By the way, the blade body used in the slit mechanism may cause a cutting failure due to wear. Therefore, maintenance such as adjustment of the pressing force for sandwiching the blade body and polishing or replacement of the blade body is necessary.
[0004]
In addition, it is difficult to grasp the maintenance timing of the blade because the wear of the blade varies depending on the material and thickness of the packaging film to be cut, the material and shape of the blade, and the pressing force that sandwiches the blade. It was something. Further, the pressing force adjustment of the blade body is based on manual air pressure adjustment and spring pressure adjustment, and therefore relies on the experience and intuition of the operator.
[0005]
Accordingly, the present invention has been made in view of the above-described problems. For example, a vertical seal portion cutting device that can be applied to a filling and packaging machine, can easily detect cutting defects, and is easy to maintain. It is intended to provide.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, the vertical sealing portion cutting device of the present invention is formed by the vertical seal of the continuous packaging bag that seals the contents by vertically and horizontally sealing the packaging films. in the cutting device for cutting the longitudinal sealing portion, which is a pair of blade, cutting means and a pressing means for pressurizing press the vertical seal portion by the blade body or the vertical seal portion is cut by said cutting means Detection means capable of detecting whether or not, adjustment means for adjusting the cutting pressure of the vertical seal portion, and control means capable of controlling the adjustment means based on a detection signal from the detection means It is characterized by.
[0007]
According to a second aspect of the present invention, in the longitudinal seal portion cutting device according to the first aspect, the packaging bag continuous body is formed in a plurality of rows simultaneously through the vertical seal portion. .
[0011]
Further, according to a third aspect of the present invention, in the vertical seal section cutting device according to the first or second aspect , the control unit is configured to notify an operator or a device based on a detection signal from the detection unit. It is characterized by stopping.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, like those applied to the filling and packaging machine as an embodiment of the present invention will be described with reference to the accompanying drawings. The schematic configuration and operation of the filling and packaging machine according to the present invention will be described with reference to FIGS.
[0013]
In the same figure, the overall structure of the filling and packaging machine will be described. The filling and packaging machine is provided with a holding frame 1, and a film roll 11 in which a packaging film 2 is wound on a roll can be attached to and detached from the holding frame 1. Is provided. The filling and packaging machine is provided with a film guide mechanism 3 and a film folding mechanism 4 for hermetically wrapping the contents W, and is provided with a vertical seal mechanism 5, a horizontal seal mechanism 6 and a filling mechanism 7, to cut the packaging bag, the trimming mechanism 8, a slit mechanism (cutting means) 9 and the cutting mechanism 10 is provided.
[0014]
Packaging film 2, the drawn by the vertical sealing mechanism 5 from a roll-off I Lum Makihan 11 a feeding mechanism of the packaging full I Lum 2, led to full I Lum folding mechanism 4 via a full I Lum guide mechanism 3 It is, is by folding guides provided in full I Lum folding mechanism 4 the packaging full I Lum 2 folded in two along the longitudinal direction.
[0015]
Vertical sealing mechanism 5, by a pair of longitudinal heat seal rolls 5a facing rotatably provided, clamshell to have been packaged off I folded edges of Lum 2 and the intermediate portion and the turnup end What happened (right and left edges each intermediate portion) and the one in which the longitudinally heat sealed to form a longitudinal seal portion S1 while feeding.
[0016]
Lateral sealing mechanism 6, a pair of lateral heat seal rolls 6a facing rotatably provided, and heat-sealed packaging full I Lum 2 laterally, forming a bottom portion serving as a packaging bag P, that the lateral seal portion S2 To do.
[0017]
The filling mechanism 7 fills a packaging film 2 formed in a continuous bottomed cylindrical shape with a vertical seal portion S1 and a horizontal seal portion S2 with a content W made of a liquid such as sauce or soy sauce. It is. Further, the bag mouth portion of the packaging film 2 containing the contents W is further fed and sealed by being heat-sealed in the horizontal direction by the horizontal sealing mechanism 6 again.
[0018]
The trimming mechanism 8 is provided with a pair of trimming blades 8a which are rotatably provided and facing both end portions of the folded back of the packaging film 2 continuously filled and packaged by the vertical and horizontal sealing mechanisms 5 and 6 and the filling mechanism 7. In order to do so, it is cut.
[0019]
The slit mechanism 9 cuts substantially the center part of the vertical seal part S1 formed in the middle part among the vertical seal parts S1 formed in three places in the packaging film 2 by the blade body mentioned later. Thereby, the continuous body of the packaging bag P continuously formed in two rows can be divided into each.
[0020]
The cutting mechanism 10, the blade (not shown), a substantially central portion to detach the cut part of the vertically continuous packaging state of the packaging film 2 of the lateral seal portion S2, disconnecting the packaging bag P one by one their respective Is.
[0021]
Between the slitting mechanism 9 and the cutting mechanism 10, detecting means K is provided in the slit mechanism 9 Thus the packaging film 2 is detected whether or not a cut.
[0022]
Next, the slit mechanism 9 which is a main part of the present invention will be described in detail with reference to FIG. 2. The slit mechanism 9 is mainly composed of a flat blade body 91, a cutting blade body 92, and a pressing means 93.
[0023]
The flat blade body 91 is formed in a disk shape and is provided to be rotatable at a corresponding position of the vertical seal portion S1. The flat blade body 91 is pivotally supported by a shaft 91b fixed by a fixing portion 91a.
[0024]
The cutting blade 92 has a disk shape that can be rotated while being pivotally supported by a shaft 92a. The cutting edge that is the circumference of the cutting blade 92 is formed at an acute angle, and faces the flat blade 91 so as to face the vertical seal portion S1 of the packaging film 2. Is provided so as to sandwich the substantially central portion of the. The shaft 92a is held so as to be movable along the shaft 94 by a guide portion 92b having a bearing.
[0025]
The pressing means 93 includes a cylinder, and a cutting blade provided at a substantially central portion of the shaft 92a held between the guide portions 92b by pressing the guide portions 92b with a predetermined air pressure from an electropneumatic regulator described later. 92 is configured such that it can be pressed toward the flat blade body 91 side.
[0026]
Next, an electrical configuration of the slit mechanism 9 which is a main part of the present invention will be described.
[0027]
In FIG. 3, K is a detecting means provided on the lower side of the slit mechanism 9 and comprising a limit switch or the like for detecting the cutting state of the packaging film 2. For example, when the packaging film 2 is not cut, In this configuration, the detection means K is turned on via an arm portion K1 that penetrates the packaging film 2 from a slit portion that is cut by the slit mechanism 9. Reference numeral 95 denotes a pressure switch for monitoring the air pressure applied to the pressing means 93. The pressure switch 95 monitors the maximum value of the pressure a applied to the pressing means 93 via the air pipe, and the pressure value is set arbitrarily. When reaching the above, an abnormal signal is output to inform the control means described later that there is an abnormality. Reference numeral 96 denotes an electropneumatic regulator (adjusting means) for adjusting the air pressure based on the control of the control means to be described later. When an air pressure adjusting signal output from the control means is input, a predetermined air pressure corresponding to the air pressure adjusting signal is input. Is obtained. 97 is connected to the detection means K and the pressure switch 6 as input means, and the electropneumatic regulator 96 is connected as output means, respectively, and a ROM for storing a program for processing operations described later and a RAM for temporarily storing data; The control means includes a CPU for executing the program, and includes a microcomputer, a sequencer, and the like. The control means 97 can also be used as a control means for electrically controlling the filling and packaging machine.
[0028]
Next, the control method of the slit mechanism 9 in the control means 97 will be described with reference to FIG.
[0029]
Control means 97 checks the presence or absence of an input from the detecting means K, the input from the detecting means K is present, cutting the packaging full I Lum 2 is judged not to be performed (step SS1).
[0030]
Next, when the control means 97 determines that there is an input from the detection means K, it checks whether or not an abnormal signal is input from the pressure switch 95 (step SS2). If the control means 97 determines that there is no input of an abnormal signal from the pressure switch 95, the control means 97 determines that the cutting adjustment allowable range in the slit mechanism 9 is present, and adds a predetermined air pressure value as a correction value to the current air pressure value. Then, a pressure value to the flat blade body 91 side of the cutting blade body 92 in the slit mechanism 9 is set, and an air pressure adjustment signal corresponding to the pressure value is output to the electropneumatic regulator 96 (step SS3). The correction value is determined by the shape and material of the flat blade body 91 and the cutting blade 92, or the material and thickness of the packaging film 2.
[0031]
The process described above is repeatedly executed until an abnormal signal is input in step SS2. If the control means 97 determines that there is no input from the detection means K in step SS1, the control means 97 maintains the current pressure value.
[0032]
When an abnormal signal from the pressure switch 95 is input in step SS2, the control means 97 determines that the slit mechanism 9 is outside the allowable cutting adjustment range, and executes processing to stop the filling and packaging machine, and a speaker or lamp (not shown) The operator is notified by a notification unit such as (step SS4).
[0033]
The control means 97 confirms the input of the abnormal signal from the pressure switch 95, and if there is no input of the abnormal signal, maintenance such as replacement of the cutting blade body 92 and polishing by the slit mechanism 9 is performed, and proper cutting is performed. Assuming that the slit mechanism 9 is within the adjustment allowable range, the input of the detection means K is confirmed again (step SS1).
[0034]
According to the control method of the slit mechanism 9, the packaging bag continuum that seals the contents W by stacking the packaging film 2 in a vertical and horizontal seal and the vertical seal portion S <b> 1 formed by the vertical seal are cut. By providing the slit mechanism 9 and the detection means K that can detect whether or not the vertical seal portion S1 has been cut by the slit mechanism 9, the operator does not always inspect the packaging bag P that is a product. It is easy to detect a cutting defect.
[0035]
Moreover, since the packaging bag continuous body is formed in a plurality of rows at the same time through the vertical seal portion, two packaging bags P are produced, so that it becomes a highly productive device.
[0036]
The slit mechanism 9 includes a pair of blade bodies 91 and 92, and includes a pressing unit 93 that presses and presses the vertical seal portion S1, so that the configuration is simple and the vertical seal portion S1 can be easily formed by the blade bodies 91 and 92. Can be pinched.
[0037]
Further, by including the electropneumatic regulator 96 that adjusts the cutting pressure of the vertical seal portion S1, the pressure for sandwiching the vertical seal portion S1 of the blade bodies 91 and 92 can be easily increased.
[0038]
Further, by providing the control means 97 that can control the electropneumatic regulator based on the detection signal from the detection means K, the operator can automatically produce a good product without detecting a defective product. The pressure adjustment can be performed, and the operator's work can be reduced.
[0039]
Further, by providing the pressure switch 95, the maximum value of the pressure sandwiched between the blade bodies 91 and 92 can be monitored, and the slit mechanism 9 can be prevented from being damaged by the pressure exceeding the allowable range in the pressing means 93.
[0040]
Further, as in step SS4, the control unit 97 suppresses the production of unnecessary defective products by prompting the operator or stopping the apparatus based on the detection signal from the detection unit K, and promptly. The maintenance of the blade body by the operator or the start of operation of the filling and packaging machine can be urged.
[0041]
In the present embodiment, the slit mechanism 9 has been described with reference to controlling the pressure sandwiching the vertical seal portion S1 of the blade bodies 91, 92. However, the present invention is not limited to this, for example, The trimming blade body 8a in the trimming mechanism 8 may be provided so as to be capable of adjusting the pressing pressure by adopting the same configuration as that of the slit mechanism 9 described above, and the same effect as in the above-described embodiment can be obtained.
[0042]
The present invention can also be applied as a cutting means in the filling and packaging apparatus disclosed in Japanese Patent Laid-Open No. 8-48301 shown in the conventional example, and the same effects as those of the above-described embodiment can be obtained.
[0043]
Further, in the present embodiment, the mentioned those that detect whether cutting of the packaging film 2 by the slit mechanism 9 is made through the arm portion K1, the present invention is not limited thereto, e.g. The slit portion may be monitored by a transmission type sensor, and the same effect as the above-described embodiment can be obtained.
[0044]
【The invention's effect】
The apparatus for cutting a vertical seal portion according to the present invention includes a continuous packaging bag for sealing contents by overlapping and vertically sealing packaging films, and cutting for cutting the vertical seal portion formed by the vertical seal. And a detecting device capable of detecting whether or not the vertical seal portion has been cut by the cutting means, thereby providing a cutting device for the vertical seal portion that can easily detect cutting failure and is easy to maintain. can do.
[Brief description of the drawings]
FIG. 1 is an overall plan view of an embodiment of the present invention.
FIG. 2 is a plan view of the main part of FIG.
FIG. 3 is a block diagram showing an electrical configuration of control means according to the embodiment of the present invention.
FIG. 4 is a flowchart showing a processing method of the control means according to the embodiment of the present invention.
[Explanation of symbols]
2 Packaging film 9 Slit mechanism (cutting means)
93 Pressing means 96 Electropneumatic regulator (adjusting means)
97 Control means K Detection means P Packaging bag S1 Vertical seal part W Contents

Claims (3)

In the cutting device for cutting the vertical seal portion formed by the vertical seal of the continuous packaging bag that seals the contents by vertically and horizontally sealing the overlapping packaging films ,
A cutting means comprising a pair of blades, and a pressing means for pressing and pressing the vertical seal portion by the blades;
A detector capable of detecting whether said vertical seal portion is cut by said cutting means,
Adjusting means for adjusting the cutting pressure of the vertical seal portion;
Control means capable of controlling the adjustment means based on a detection signal from the detection means;
A device for cutting a vertical seal part, comprising: The packaging bag continuum is characterized by comprising formed plural rows simultaneously via the longitudinal sealing portion, the vertical seal part of the cutting device according to claim 1. 3. The vertical seal section cutting device according to claim 1 , wherein the control means performs notification to an operator or stop of the apparatus based on a detection signal from the detection means .

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