JP2002104337A - Filling and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filling and packaging machine having a good productivity. SOLUTION: The present invention relates to the filling and packaging machine which forms a packing bag P by sealing a film 2 while filling an object W to be packaged. This machine is provided with a detection means K1 which outputs a detecting signal according to the seal state of the seal part 2B of the film 2, a cut means 8 which can cut the seal part 2B, and a control means K2 which judges the seal state of the sealing part 2B on the basis of the detecting signal from the detection means K1, and controls the cut means 8 according to this judgement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling and packaging machine for forming a packaging bag by sealing a film while filling an object to be packaged.

[0002]

2. Description of the Related Art Conventionally, for example, as disclosed in Japanese Patent Application Laid-Open No. 8-48301, one long packaging film is folded in two and superimposed, or two superimposed films are superimposed and overlapped. The two side edges are vertically sealed to form a vertical seal portion, and the leading end portion of the superimposed packaging film is horizontally sealed to form a horizontal seal portion serving as a bottom portion. After filling a predetermined amount of the article to be packaged in the upper portion of the rear open cylinder, the horizontal sealing portion is formed by horizontally sealing the rear portion of the horizontal sealing portion again at a predetermined interval behind the horizontal sealing portion, thereby continuously forming a sealed packaging bag. There is a filling and packaging machine that manufactures a packaging bag by cutting each seal portion formed on a packaging film by a cutting device having a body.

[0003]

In such a filling and packaging machine, there is a case where a seal failure occurs in which a sealed article is stuck in a state where an object to be packaged is stuck in a horizontal seal portion. Visual inspection was required.

[0004] In addition, when the horizontal seal portion having a poor seal is cut by the cutting device, the article to be packaged may leak out of the packaging bag, and the worker stops the filling and packaging machine and leaks out of the packaging bag. As a result, the work to remove the packaged material attached to the packaging bag that becomes the device or the product has to be performed, which has been a factor of reducing productivity.

[0005] The present invention has been made in view of the above-mentioned problems, and has as its object to provide a filling and packaging machine having good productivity.

[0006]

A filling and packaging machine according to the present invention comprises:
2. 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 detection device outputs a detection signal according to a sealing state of a sealing portion of the film. Means, cutting means capable of cutting the seal portion, and control means for determining a sealing state of the seal portion based on a detection signal from the detection means, and controlling the cutting means in accordance with the determination. It is characterized by comprising.

According to a second aspect of the present invention, the filling and packaging machine according to the first aspect further includes an informing means for informing based on a detection signal of the detecting means under the control of the control means. It is characterized by the following.

According to a third aspect of the present invention, in the filling and packaging machine according to the first or second aspect, under the control of the control means, the packaging bag is lined based on a detection signal of the detection means. It is characterized by comprising discharge means for discharging to the outside.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention applied to a filling and packaging machine will be described with reference to the accompanying drawings.

Referring to FIG. 1, the entire structure of the filling and packaging machine will be described. The filling and packaging machine is provided with a holding frame 1, on which a film roll 11 in which a packaging film 2 is wound on a roll is attached and detached. It is provided so as to be exchangeable. Further, the filling and packaging machine is provided with a film guide mechanism 3 and a film folding mechanism 4 for hermetically packaging the contents W, and a vertical sealing mechanism 5, a horizontal sealing mechanism 6, a filling mechanism 7, a cutting mechanism 8,
Discharge means 9 is provided.

The packaging film 2 is pulled out of the roll film roll 11 by a vertical sealing mechanism 5 serving as a mechanism for feeding the packaging film 2, and is led out to a film folding mechanism 4 via a film guide section mechanism 3, and the film is folded. A folding guide provided on the mechanism 4 folds the packaging film 2 in two along the longitudinal direction.

The vertical sealing mechanism 5 is provided with a pair of rotatable vertical heat sealing rolls 5A, each of which has a folded edge portion, an intermediate portion, and a folded edge portion (both right and left edges) of the folded packaging film 2. And the middle part) are heat-sealed in the vertical direction while being extended to form a vertical seal part 2A.

The horizontal seal mechanism 6 is constructed as shown in FIG. 2. A pair of heaters 6A are provided so as to be opposed to each other. This is a horizontal heat-sealing roll for heat-sealing the packaging film 2 so as to sandwich it. 6B is provided on the front surface of the machine base, fixedly protrudes the guide shaft 6C, and has one horizontal heat seal roll 6A.
Is a bearing base that rotatably supports. Reference numeral 6D denotes a slide base slidably mounted along the guide shaft 6C and rotatably supporting the other horizontal heat seal roll 6A. Reference numeral 6E denotes a pressing portion which is formed of an air cylinder, is provided on a support plate 6F fixed to the tip of the guide shaft 6C, and presses the slide table 6D along the guide shaft 6C.

According to these structures, the packaging film 2 is sandwiched between the pair of horizontal heat seal rolls 6A.
The bottom part which becomes the packaging bag P by heat sealing in the horizontal direction, that is, the horizontal sealing part 2B can be formed. In addition, the horizontal sealing mechanism 6 is provided such that the gap distance between the horizontal heat seal rolls 6A changes in accordance with the thickness of the horizontal sealing portion when the packaging film 2 is sandwiched.

On the side of the horizontal seal mechanism 6, there is provided a detecting means K1 comprising a displacement sensor capable of detecting the sliding distance of the slide base 6D.

The filling mechanism 7 includes a seasoning containing solid matter such as sesame and meat pieces in the packaging film 2 formed into two continuous bottomed cylindrical shapes by the vertical seal portion 2A and the horizontal seal portion 2B. It is to be filled with a packaged object W made of soup. Further, the opening portion of the packaging film 2 containing the article W to be packaged is further fed and heat-sealed again by the horizontal sealing mechanism 6 in the horizontal direction to be in a sealed state.

The cutting mechanism 8 cuts and cuts a substantially central portion of the horizontal seal portion 2B of the packaging film 2 which is continuously wrapped in the up-down direction by a pair of blades (not shown).
Are cut off one by one.

The discharging means 9 has a guide plate 9A provided at the subsequent stage of the cutting mechanism 8, and is driven by a rotary solenoid (not shown) so that the guide plate 9A swings right and left, and determines the unloading direction of the packaging bag P. It is.

Next, the electrical configuration of the filling and packaging machine of the present invention will be described with reference to FIG.

The detecting means K1 is provided on the side of the horizontal seal mechanism 6 and detects the sliding distance of the slide table. A detecting signal corresponding to the distance as shown in FIG. The gap distance between the horizontal heat seal rolls 6A that changes depending on the thickness of the packaging film 2 during horizontal sealing can be detected. in this case,
The output value of the detection signal decreases as the gap distance between the horizontal heat seal rolls 6A increases.

The control means K2 is composed of a microcomputer, a sequencer, or the like, and temporarily stores a program or a ROM for storing various setting values such as a reference operation value L (shown in FIG. 4) and a calculation value. RA to remember
M, having a CPU or the like for executing the program,
The control means K2 has an I / O interface for making an electrical connection with the detection means K1 and each means described later. The control means K2 can also be used as a control means for electrically controlling the filling and packaging machine.

The cutting mechanism 8 performs a cutting operation of the horizontal seal portion 2B by a blade body based on a control signal from the control means K2.

The discharge means 9 discharges the packaging bag P cut and conveyed by the cutting mechanism 8 from the normal conveyance path by driving the guide plate 9A based on a control signal from the control means K2. is there.

The notifying means 10 comprises a buzzer or a lamp (not shown), based on a control signal from the control means K2.
This is for notifying the operator of the operation state of the filling and packaging machine.

Next, the processing operation of the control means K2 will be described with reference to FIG.

The control means K2 receives the detection signal of the detection means K1 (step S1), and determines whether or not it is within a preset reference output value L (step S2).

In step S2, if the output value of the detection signal is equal to or greater than the reference output value L, a control signal is output to the cutting means 8 so as to cut the portion of the horizontal seal portion 2B corresponding to the detection signal (step S3). If the output value of the detection signal is smaller than the reference output value L, it is recognized that the packaged object W has been bitten at the horizontal seal portion 2B and the horizontal seal portion 2B corresponding to the detection signal is recognized. A control signal is output to the cutting mechanism 8 so as not to cut the portion (step S4).

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 S4).
5) If it is not processed in step S4, the packaging bag P is transferred to a conveying device (not shown) which is a normal post-process.
Is transferred (step S6), and if processed in step S4, a control signal is output to the discharging means 9 so as to discharge the continuous packaging bag as a defective product out of the normal process (outside the line) ( In step S7, a control signal is output to the notifying means 10 so as to notify the worker that the defective product has been discharged (step S8).

By repeating the processing operation of the control means K2, the entrapment of the article to be packaged W in the lateral seal section 2B of the packaging film 2 is detected, and the lateral seal section 2B in which the article to be packaged W is engaged is cut. Therefore, the article to be packaged W can be prevented from adhering to the apparatus and the packaging bag P. In addition, by controlling the discharging means 9 as in step S7, the packaging bag P having the lateral seal portion 2B in which the packaged object W is bitten is automatically discharged as a defective product out of the normal process without stopping the apparatus. can do.

Further, according to the embodiment of the present invention, it is possible to detect not only the lateral seal portion 2B biting the packaged object W but also the defect of the lateral seal portion 2B caused by the wrinkle of the packaging film 2. .

According to the present invention, only the horizontal seal portion 2B in which the entrapment of the packaged object W is detected is not cut.
The cutting means 8 can be controlled so as not to cut the horizontal seal portions 2B at several places before and after this.

Further, by providing setting means such as a panel switch for setting the reference output value L in accordance with the thickness and material of the packaging film 2 serving as the packaging bag P, the article W to be packed, and the like, it is possible to provide various means. A versatile filling and packaging machine that matches the packaging form can be provided.

Further, the detecting means K according to the embodiment of the present invention
1 has been described as an example in which a detection signal according to the thickness of the seal portion 2B is output, but the present invention is not limited to this, and for example, packaging using a CCD camera as a detecting means is described. The film may be imaged, and the bite of the packaged object may be detected based on the imaged data.

[0034]

According to the present invention, there is provided a filling and packaging machine for forming a packaging bag by sealing a film while filling an object to be packaged, wherein a detection signal for outputting a detection signal according to a sealing state of a sealing portion of the film is provided. Means, cutting means capable of cutting the seal portion, and control means for determining a sealing state of the seal portion based on a detection signal from the detection means, and controlling the cutting means in accordance with the determination. By providing this, a filling and packaging machine with good productivity can be provided.

[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 a main part of FIG. 1;

FIG. 3 is a block diagram showing an electrical configuration of a control unit according to the embodiment of the present invention.

FIG. 4 is a diagram illustrating an example of a detection signal output by a detection unit according to the embodiment of the present invention.

FIG. 5 is a flowchart showing a processing method of a control unit according to the embodiment of the present invention.

[Explanation of symbols]

 2 Packaging film (film) 2B Horizontal seal part (seal part) 9 Discharge means 10 Notification means K1 Detecting means K2 Control means P Packaging bag W Packaged object

Claims (3)

[Claims] 1. A filling and packaging machine for forming a packaging bag by sealing a film while filling an object to be packaged, comprising: detecting means for outputting a detection signal according to a sealing state of a sealing portion of the film; Cutting means capable of cutting the seal portion, and control means for judging a sealing state of the seal portion based on a detection signal from the detection means, and controlling the cutting means according to the judgment. A filling and packaging machine. 2. The filling and packaging machine according to claim 1, further comprising an informing means for informing based on a detection signal of said detecting means under the control of said controlling means. 3. The apparatus according to claim 1, further comprising discharge means for discharging the packaging bag out of the line based on a detection signal of the detection means under the control of the control means. Filling and packaging machine.