JP3943318B2 - 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 packaging bag by sealing a film while filling an article to be packaged.
[0002]
[Prior art]
Conventionally, for example, as disclosed in Japanese Patent Application Laid-Open No. 8-48301, one long packaging film is folded in two or overlapped, or two sheets are overlapped, and the overlapping side edges are overlapped. A vertical seal is formed by vertical sealing, and the top of the overlapped packaging film is laterally sealed to form a horizontal seal that becomes the bottom, and the upper part of the open cylinder behind the horizontal seal in the transfer direction A cutting device having a blade body that continuously forms a hermetic packaging bag by filling a predetermined amount of an object to be packaged and then laterally sealing again at a predetermined interval from the lateral seal portion to form a lateral seal portion. There is a filling and packaging machine that manufactures a packaging bag by cutting each seal portion formed on the packaging film.
[0003]
[Problems to be solved by the invention]
In such a filling and packaging machine, there is a case where a sealing failure occurs in which the package is sealed while the packaged item is caught in the lateral seal portion, and a visual inspection of the seal portion by an operator is necessary.
[0004]
In addition, by cutting the laterally sealed portion having a defective seal with a cutting device, the packaged material may leak out of the packaging bag, and the operator stops the filling and packaging machine and leaks out of the packaging bag. The work which removes the to-be-packaged object adhering to the packaging bag used as a product was forced, and became a factor which reduced productivity.
[0005]
Then, this invention is made | formed in view of the above-mentioned subject, and it aims at providing the filling packaging machine with favorable productivity.
[0006]
[Means for Solving the Problems]
The filling and packaging machine according to the present invention is a filling and packaging machine for forming a packaging bag by sealing a film while filling an object to be packaged as described in claim 1, wherein the film is sealed in the sealing portion of the film. Detecting means for outputting a corresponding detection signal, cutting means capable of cutting the seal portion, and determining a seal state of the seal portion based on a detection signal from the detection means, and in response to this determination, the cutting means and control means for controlling said detection means, the transverse sealing mechanism, detects a pivotally supported sliding table sliding distance of the other lateral heat seal rolls which are pressed against one of the pair of transverse heat sealing roll It is characterized by comprising a displacement sensor .
[0007]
According to a second aspect of the present invention, in the filling and packaging machine according to the first aspect of the present invention, it is provided with notifying means for notifying based on a detection signal of the detecting means under the control of the control means. To do.
[0008]
Also, as described in claim 3, in the filling and packaging machine according to claim 1 or 2, the packaging bag is discharged out of the line based on a detection signal of the detection means under the control of the control means. It is characterized by comprising a discharging means.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0010]
Referring to FIG. 1, 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 around the holding frame 1 in a roll shape can be attached and detached. 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 a vertical sealing mechanism 5, a horizontal sealing mechanism 6, a filling mechanism 7, a cutting mechanism 8, A discharge means 9 is provided.
[0011]
The wrapping film 2 is pulled out from the roll film roll 11 by a vertical seal mechanism 5 serving as a wrapping film 2 feeding mechanism, and is led out to the film folding mechanism 4 via the film guide portion mechanism 3. The packaging film 2 is folded in two along the longitudinal direction by the provided folding guide.
[0012]
The vertical sealing mechanism 5 is configured so that the folded edge portion, the middle portion, and the folded end portion of the wrapping film 2 folded in half by a pair of opposed vertical heat seal rolls 5A that are rotatably opposed to each other (the left and right edge portions and the middle portion). Part) is heat-sealed in the vertical direction while being fed out to form the vertical seal part 2A.
[0013]
The horizontal seal mechanism 6 is configured as shown in FIG. 2, and 6A is provided with a heater (not shown) and a pair of facing each other, and is rotated by receiving a rotational drive of a motor (not shown) to rotate the packaging film 2. It is a horizontal heat seal roll which heat-seals by inserting | pinching. 6B is a bearing stand that is provided on the front surface of the machine base, fixedly projects the guide shaft 6C, and rotatably supports one side heat seal roll 6A. 6D is a slide base that is slidably installed along the guide shaft 6C and pivotally supports the other horizontal heat seal roll 6A. Reference numeral 6E denotes an air cylinder that is provided on a support plate 6F fixed to the tip of the guide shaft 6C and is a pressing portion that presses the slide base 6D along the guide shaft 6C.
[0014]
With these structures, the bottom of the packaging bag P, that is, the lateral seal portion 2B can be formed by heat-sealing in the lateral direction so as to sandwich the packaging film 2 between the pair of lateral heat seal rolls 6A. The horizontal seal mechanism 6 is provided such that the gap distance between the horizontal heat seal rolls 6A changes corresponding to the thickness of the horizontal seal portion when the packaging film 2 is sandwiched.
[0015]
Further, on the side of the lateral seal mechanism 6, there is provided detection means K1 composed of a displacement sensor capable of detecting the sliding distance of the slide base 6D.
[0016]
The filling mechanism 7 is composed of a seasoning or soup containing a solid material such as sesame or meat pieces in the packaging film 2 formed in a continuous bottomed cylindrical shape by the vertical seal portion 2A and the horizontal seal portion 2B. The item to be packaged W is filled. Moreover, the packaging film 2 bag mouth part containing this to-be-packaged object W is further sent, and is heat-sealed in the horizontal direction again by the horizontal sealing mechanism 6, and will be in a sealing state.
[0017]
The cutting mechanism 8 cuts and cuts the substantially central portion of the lateral seal portion 2B of the packaging film 2 in the up and down direction with a pair of opposed blades (not shown), and each of the packaging bags P one by one. Is to be separated.
[0018]
The discharge means 9 has a guide plate 9A provided at the rear stage of the cutting mechanism 8, and is driven so that the guide plate 9A swings left and right by a rotary solenoid (not shown) to determine the carrying-out direction of the packaging bag P.
[0019]
Next, the electrical configuration of the filling and packaging machine of the present invention will be described with reference to FIG.
[0020]
The detection means K1 is provided on the side of the horizontal seal mechanism 6 and detects the sliding distance of the slide base, and outputs a detection signal corresponding to the distance as shown in FIG. 4 to the control means described later. It is possible to detect the gap distance between the horizontal heat seal rolls 6 </ b> A that changes depending on the thickness of the packaging film 2 during horizontal sealing. In this case, the larger the gap distance between the horizontal heat seal rolls 6A, the smaller the output value of the detection signal.
[0021]
The control means K2 is composed of a microcomputer, a sequencer, etc., and temporarily stores a ROM and calculation values in which various setting values such as a processing operation program (to be described later) and a reference output value L (shown in FIG. 4) are stored. The control means K2 has an I / O interface for establishing electrical connection with the detection means K1 and each means to be described later. . The control means K2 can also be used as a control means for electrically controlling the filling and packaging machine.
[0022]
The cutting mechanism 8 performs a cutting operation of the lateral seal portion 2B by the blade body based on a control signal from the control means K2.
[0023]
The discharge means 9 drives the guide plate 9A based on a control signal from the control means K2, thereby discharging the packaging bag P cut and transported by the cutting mechanism 8 from the normal transport path.
[0024]
The notification means 10 is composed of a buzzer and a lamp (not shown), and is for notifying the operator of the operation state of the filling and packaging machine based on a control signal from the control means K2.
[0025]
Next, the processing operation in the control means K2 will be described with reference to FIG.
[0026]
The control means K2 inputs the detection signal of the detection means K1 (step S1), and determines whether it is within a preset reference output value L (step S2).
[0027]
If the output value of the detection signal is greater than or equal to the reference output value L in step S2, a control signal is output to the cutting means 8 so as to cut the horizontal seal portion 2B corresponding to the detection signal (step S3), and detection is performed. If the output value of the signal is less than the reference output value L, it is recognized that the article to be packaged W is bitten into the side seal portion 2B, and the side seal portion 2B corresponding to this detection signal is cut. A control signal is output to the cutting mechanism 8 so as not to occur (step S4).
[0028]
Further, the control means K2 determines whether or not the packaging bag P cut by the cutting means 8 is the continuous packaging bag processed in step S4 (step S5), and has not been processed in step S4. If it is a product, the packaging bag P is transferred to a transport device (not shown) which is a normal post-process (step S6). A control signal is output to the discharge means 9 so as to discharge to (outside the line) (step S7), and a control signal is output to the notification means 10 so as to notify the operator that the defective product has been discharged (step S8). .
[0029]
By repeating such a processing operation of the control means K2, it is possible to detect the biting of the package W in the horizontal seal portion 2B of the packaging film 2 and not cut the horizontal seal portion 2B biting the package W. It can prevent that the to-be-packaged object W adheres to an apparatus or the packaging bag P. FIG. Further, by controlling the discharge means 9 as in step S7, the packaging bag P having the lateral seal portion 2B biting the package W is automatically discharged out of the normal process as a defective product without stopping the apparatus. can do.
[0030]
In addition, according to the embodiment of the present invention, not only the lateral seal portion 2B that has bitten the article W to be packaged, but also defects in the lateral seal portion 2B caused by wrinkles of the packaging film 2 can be detected.
[0031]
In the present invention, only the horizontal seal portion 2B where the biting of the packaged article W is detected is not cut, but the cutting means 8 may be controlled so as not to cut the horizontal seal portions 2B at several places before and after. it can.
[0032]
In addition, by providing setting means such as a panel switch for setting the reference output value L according to the thickness and material of the packaging film 2 to be the packaging bag P, the packed object W to be filled, etc., various packaging forms can be obtained. Combined and versatile filling and packaging machine.
[0033]
Further, the detection means K1 according to the embodiment of the present invention has been described by taking the example of outputting a detection signal corresponding to the thickness of the seal portion 2B, but the present invention is not limited to this, for example, The packaging film may be imaged using a CCD camera as the detecting means, and the biting of the packaged object may be detected based on the imaging data.
[0034]
【The invention's effect】
The present invention is a filling and packaging machine for forming a packaging bag by sealing a film while filling an article to be packaged, wherein the detection means outputs a detection signal corresponding to a sealing state in a sealing portion of the film, and the seal A cutting means capable of cutting the portion, and a control means for determining a seal state of the seal portion based on a detection signal from the detection means, and controlling the cutting means in accordance with the determination. , the transverse sealing mechanism, by Rukoto configure a displacement sensor for detecting the axially supported sliding table sliding distance of the pair of other lateral heat seal rolls which are pressed against one of the lateral heat seal rolls, the productivity A good filling and packaging machine can be provided.
[Brief description of the drawings]
1 is a whole view of an embodiment of the present invention.
FIG. 2 is a plan view of the main part of FIG.
3 is a block diagram showing an electrical configuration of a control unit according to an embodiment of the present invention.
Detection means according to an embodiment of the present invention; FIG is a diagram showing an example of the detection signal is output.
5 is a flowchart illustrating a processing method of the control means according to an embodiment of the present invention.

Claims (3)

A filling and packaging machine for forming a packaging bag by sealing a film while filling an object to be packaged, and detecting means for outputting a detection signal according to a sealing state in the sealing portion of the film, and cutting the sealing portion And a control unit that determines a sealing state of the seal portion based on a detection signal from the detection unit and controls the cutting unit according to the determination, and the detection unit includes a lateral seal mechanism. A filling and packaging machine comprising: a displacement sensor for detecting a sliding distance of a shaft slide base of the other horizontal heat seal roll pressed against one of the pair of horizontal heat seal rolls . The filling and packaging machine according to claim 1, further comprising an informing unit that informs based on a detection signal of the detecting unit under the control of the control unit. The filling and packaging machine according to claim 1 or 2, further comprising a discharge unit that discharges the packaging bag out of the line based on a detection signal of the detection unit under the control of the control unit.

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