JP6357337B2 - Perforation forming device for bag-like package - Google Patents

Description

  The present invention relates to an apparatus for forming an opening perforation for a bag-like package in which an item to be packaged is stored and whose upper opening is sealed, and in particular, a transport mechanism and a perforation forming mechanism for the package. It is related with the apparatus which forms a perforation automatically during conveyance of a package.

  A single-packed bag (hereinafter referred to as a “small bag”) in which ingredients such as seasonings and ingredients are sealed is sold in the form of being enclosed in a food body package, and a plurality of small bags. Is sold in a bag-like package.

  Here, the bag-shaped package utilized for the latter form is demonstrated.

  FIG. 8 is a schematic diagram showing an example of a bag-shaped package sold in a state where a plurality of small bags are accommodated, and FIG. 8 (A) is before the upper opening of the package 1 is sealed. FIG. 8B is a perspective view showing a state in which the opening is sealed, and FIG. 8C is a front view of FIG. 8B.

  The package 1 formed in a shape similar to this shape is used in a milk pack or the like, but when used as a product containing a plurality of sachets, as shown in FIG. After a plurality of sachets 1A (in this example, sachets sealed with “sprinkle”) are accommodated in a substantially rectangular parallelepiped accommodating portion, the upper protruding portion 1a and its lower portion are As shown in FIGS. 8B and 8C, the upper protruding portion 1a is sold in a state of being flatly sealed by heat welding or adhesion as shown in FIGS. 8B and 8C.

  In such a package 1, as shown in FIGS. 8A and 8B, a perforation line 1b for cutting is printed in advance, for example, at a site directly below the lower end of the upper protruding portion 1a. And the person who purchased the package 1 cuts out using the scissors and the cutter along the perforation line 1b shown in FIG. 8 (B), and the part (gazette part) folded inwardly in the V shape is outside. When opened, the entire shape of the package 1 is a rectangular parallelepiped, so that the pouch 1A can be easily taken out from the rectangular take-out opening.

  In other words, the package 1 illustrated in FIG. 8 is a package that accommodates a plurality of articles 1A that are used when needed individually, and is a portion cut along the perforated line 1b (this example). Then, the portion of the gusset portion below the upper protruding portion 1a) becomes a rectangular extraction opening 1c, which can be said to be a package that can be used as a storage container for storing the article 1A.

  Such a package is formed of a predetermined packaging material such as synthetic resin or paper. In addition to the type of cutting with scissors or the like, there are a type that opens by pulling the sealed upper protruding portion 1a from both sides, and a type that opens by cutting from a notch portion. In the case of two types of packages, depending on the material of the bag and the welded state of the seal portion, the package may not open unless it is pulled forcefully, or other parts may be torn.

  By the way, conventionally, there is a package in which an opening perforation composed of dotted cuts and dotted holes is formed instead of printed perforations, and many devices for forming the perforations have been proposed. Yes. However, the target for forming the perforation is to form a perforation in the horizontal seal portion for a strip-shaped film (for example, a continuous package in which a plurality of sachets are continuous through the horizontal seal portion) fed from a film roll. Most of them are made (see, for example, Patent Documents 1 to 3).

  On the other hand, a perforation forming apparatus for a bag-like package as illustrated in FIGS. 8A to 8C has also been proposed, but a conventional apparatus has a plurality of articles (for example, “disposable diapers”). ")" Is a device for forming perforations in the packaging material before being accommodated (see, for example, Patent Document 4).

Japanese Patent Laid-Open No. 08-080920 JP 2002-255105 A JP 2013-082474 A JP 2010-070199 A

  As described above, in a device for forming a perforation in a seal part of a continuous package in which a plurality of articles (small sachets) are connected via a lateral seal part, or in a flat package before an article is stored On the other hand, many apparatuses for forming perforations have been proposed.

  However, an apparatus for forming a perforation for opening a package after an article (packaged object) is accommodated and the upper opening is sealed does not seem to be proposed at present.

  In particular, for the bag-like package 1 having a substantially rectangular parallelepiped accommodation portion as illustrated in FIG. 8B, the lower end of the upper protruding portion 1a and the accommodation portion are being conveyed by the conveyance means such as a belt conveyor. If the perforation is automatically formed between the two, the direction and positioning of the perforation forming part may be difficult, and an effective perforation forming apparatus has not been realized.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to form a bag after an article to be packaged is accommodated in a substantially rectangular parallelepiped accommodating portion and the upper opening is sealed. It is an object of the present invention to provide a perforation forming apparatus capable of automatically forming an opening perforation accurately and without damaging other parts during transportation of the package.

The present invention relates to a bag-like package in which an object to be packaged is accommodated in a substantially rectangular parallelepiped accommodating portion and whose upper opening is sealed, and the flat upper protruding portion which is the sealed portion and the accommodation The perforation forming device for automatically forming the perforation for opening between the part, the object of the present invention,
A perforation forming mechanism having a transport mechanism of the package, a sensor for detecting the package transported by the transport mechanism, a blade unit and a blade receiving portion disposed opposite to each other across the transport path of the transport mechanism; Control means for controlling the operation of the blade unit based on the detection signal of the sensor to form the perforation, and the transport mechanism is provided on the lower side, the left side, and the right side of the package container. Using the first, second, and third conveyor belts that are in surface contact with each other, the position of the upper protrusion in the conveyance path height direction, the position of the upper protrusion in the conveyance path width direction, and the upper part A fourth conveyor belt that conveys the package in an upright posture while maintaining the orientation of the surface of the protruding portion at a predetermined position and orientation, and that is opposed to the package in a direction orthogonal to the conveyance direction of the package. There have conveying means for conveying while sandwiching the plane of the upper projecting portion from both sides, the perforation forming mechanism includes a pressing guide which holds down a portion of the downwardly from both sides than to the region to form the perforations, the The blade unit of the perforation forming mechanism has a perforation forming blade that can be moved and controlled in a direction perpendicular to and parallel to the surface of the upper protruding portion of the package conveyed by the conveying means, and the control means The blade unit is moved in the same direction and at the same speed as the package being conveyed by the conveying means based on the detection signal of the sensor, and the perforated blade is perpendicular to the surface of the upper protruding portion. This is achieved by controlling the formation of the perforation without stopping the conveyance by the conveyance means.

Furthermore, the above object of the present invention is to
The perforation forming mechanism has a pressing guide that presses a part below the part forming the perforation from both sides,
The package is a package in which the shape of a non-contained portion formed by the upper projecting portion and a space immediately below the upper projected portion is a substantially inverted Y shape when viewed from the front, and the pressing guide is a non-flat portion Being configured to stretch the perforation forming part by pressing the inverted Y-shaped inclined part from both sides,
The transport mechanism includes a guide guide having a pair of guides arranged to face each other across a transport path of the package, and the pair of guides includes a package receiving portion formed in a reverse C shape in plan view, An upper projecting portion guide portion disposed oppositely across a gap corresponding to the thickness of the upper projecting portion of the package,
The article to be packaged is a plurality of articles that are used when needed individually, and the package has the perforation portion in a state in which the upper protruding portion is cut along the perforation. It is a package that can be used as a storage container for the article as an opening for taking out the article,
The packaged items are a plurality of small bags in which foods are sealed and packaged inside individual bags,
Are more effectively achieved by each.

  According to the present invention, for a bag-shaped package in which an object to be packaged is accommodated in a substantially rectangular parallelepiped container and the upper opening is sealed, an opening perforation is accurately performed during the transportation of the package. In addition, automatic formation can be performed without damaging other parts.

  Further, by adopting a configuration including a pressing guide, the perforation forming part is a non-flat part (for example, a non-flat part 1b immediately below the lower end of the upper protruding portion 1a as illustrated in FIG. 8B). Even if it exists, it becomes possible to automatically form a perforation accurately.

  Moreover, even if the direction of the package is inclined or the position with respect to the conveyance path width direction is off by adopting a configuration including an upper projecting portion guide guide having an inverted C-shaped receiving portion in plan view, It becomes possible to adjust to a predetermined direction and position.

It is a schematic diagram showing an example of the whole composition of the perforation forming device concerning the present invention. It is a front view which shows roughly the structural example of the principal part of the conveyance mechanism which concerns on this invention. It is a perspective view which shows typically the structural example of the package receiving part of the conveyance mechanism of FIG. It is a front view which shows roughly the structural example of the perforation formation mechanism which concerns on this invention. It is a schematic diagram for demonstrating the press guide which concerns on this invention. It is a schematic diagram which shows the locus | trajectory of the perforation formation blade which concerns on this invention. It is a flowchart which shows the operation example of the perforation formation apparatus which concerns on this invention. It is a schematic diagram showing an example of a bag-like package according to the present invention.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  In the present embodiment, a case where a perforation is formed on the bag-shaped package having the shape illustrated in FIG. 8 will be described as an example. Moreover, a bag-like package is a plurality of articles (a plurality of sachets in which foods such as seasonings are sealed and packaged inside individual bags) that are used at the time each individual needs them. A bag-shaped package that can be used as a storage container for an article will be described as an example where a portion cut along the perforation serves as an opening for taking out the article.

  FIG. 1 is a schematic diagram showing an example of the overall configuration of a perforation forming apparatus according to the present invention, and shows the configuration of the main part in a plan view.

  The perforation forming apparatus of the present embodiment has, as a main configuration, the package 1 in a state in which the first to third belt surfaces cover the lower side and the left and right sides of the storage portion (substantially rectangular parallelepiped portion) of the package 1. A belt conveyor type transport mechanism 2 that transports the package 1 with the surface of the upper protruding portion 1a of the package 1 sandwiched between the belt surfaces from both sides, and a sensor 3 that detects the arrival of the package 1 The perforation forming mechanism 4 for forming the opening perforation for the package 1 being transported by the transport mechanism 2 and the control means (not shown) for controlling the operation of the entire apparatus.

  Hereinafter, the configuration of each unit will be described.

<Conveyor mechanism configuration>
2 is a front view schematically showing a configuration example of a main part of the transport mechanism according to the present invention, and FIG. 3 is a perspective view schematically showing a configuration example of a package receiving part of the transport mechanism of FIG. It is. With reference to these drawings, the configuration of the conveying means according to the present invention will be described.

  As shown in FIG. 2, the transport means of the transport mechanism 2 according to the present invention includes first and second belt surfaces that are arranged so that the belt surfaces can come into surface contact with the lower, left, and right surfaces of the package 1. And the first transport means for transporting the package 1 in an upright posture while covering the lower and left and right surfaces of the package 1 using the third transport belts 21, 22 and 23, and transport of the package 1 Using the fourth conveyor belt 24 (and the conveyor roller 25) arranged to face each other in a direction orthogonal to the direction, a flat upper protruding portion that is a sealed portion (hereinafter referred to as a “protruding portion” for convenience of explanation) And a second conveying means for conveying the vertical surface of 1a while holding the vertical posture while sandwiching the vertical surface from both sides.

  In other words, the transport mechanism 2 determines the position of the protrusion 1a of the package 1 in the transport path height direction, the position of the protrusion 1a in the transport path width direction, and the orientation of the surface of the protrusion 1a at a predetermined position and orientation. There is provided means for carrying the sheet while being held in the container.

  Specifically, the transport mechanism 2 serves as a first transport unit for the package 1, a first transport belt 21 having a horizontal belt surface for transporting the package 1 in an upright posture, and a transport direction of the package 1. A second conveyor belt 22 having a vertical belt surface in which the left side surface of the substantially rectangular parallelepiped housing portion of the package 1 and the belt surface substantially contact each other when viewed from the direction of arrow A in FIG. 1; And a third conveyor belt 23 having a vertical belt surface in which the right side surface of the substantially rectangular parallelepiped housing portion of the package 1 and the belt surface substantially come into surface contact with each other.

  In the present embodiment, the second conveyor belt 22 and the third conveyor belt 23 are wound around a tail pulley 27a, a tension pulley 28, etc. as shown in FIG. A vertical belt surface is arranged to face each other with a gap corresponding to the width.

  Further, the transport mechanism 2 includes means for transporting the package 1 while sandwiching the surface of the protruding portion 1a of the package 1 from both sides, as second transport means for the package 1. As shown in FIG. 2, the second conveying means has a vertical belt surface that has a gap corresponding to the thickness of the protruding portion 1a in a direction orthogonal to the conveying direction of the package 1 (the direction of arrow A in FIG. 1). A fourth conveyor belt 24 (or a plurality of conveyor rollers each having an annular belt mounted in a plurality of concave circumferential grooves of the roller body) is provided to be opposed to each other.

  In the present embodiment, the second conveying means includes a pair of opposed fourth conveying belts 24, respectively, a conveying roller 25 and a tail pulley 27b (in the example of FIG. 1, the upstream end pulley and the downstream end). And the fourth conveyor belt 24 and the conveyor roller 25 are used to convey the projecting portion 1a of the package 1 while sandwiching the protruding portion 1a.

  Further, as shown in the example of FIG. 1, the conveyance roller 25 arranged in the perforation forming area where the blade unit 42 is installed is closer to a roller (driven pulley) having a smaller diameter than other conveyance rollers. By using the fourth arrangement belt 24 and the conveyance roller 25, the vertical posture (position and orientation) of the protruding portion 1a of the package 1 can be conveyed in a substantially fixed state. Yes.

  In the present embodiment, the first to third conveyor belts 21 to 23 are configured as flat belts having no uneven surface, and the fourth conveyor belt 24 has an uneven surface for slip resistance formed on the surface. It consists of a flat belt.

  Here, the guide for adjusting the position and direction of the protrusion 1a with respect to the package 1 conveyed from the upstream side will be described.

  As shown in FIGS. 1 and 3, the guide guide 29 is composed of a pair of guides arranged to face each other with the conveyance path of the package 1 interposed therebetween. The pair of guides are formed of a material having a small friction coefficient, and a portion formed in a reverse C shape in plan view (referred to as a “package receiving portion”) and an upper protruding portion 1 a of the package 1. And a portion (referred to as an “upper protrusion guide portion”) disposed opposite to each other with a gap slightly larger than the thickness of the first portion.

  Here, the effect of the guide guide 29 is demonstrated.

  In FIG. 1, when the package 1 (1 </ b> A) is conveyed in an oblique direction, for example, in the direction of the arrow A, the vertical surface of the upper protruding portion 1 a is an inverted section of the guide guide 29. It is conveyed while contacting the surface and changing the direction of the surface. Thereby, the position of the protruding portion 1a with respect to the conveyance path width direction and the orientation of the surface of the protruding portion 1a are generally adjusted to the reference position and orientation (see the state of the package 1 (1B) in FIG. 1). .

  Thereafter, the package unit 1 is installed with the blade unit 42 while the position and orientation of the protruding portion 1a are adjusted to the correct position and orientation by being conveyed by the first and second conveying means described above. To the perforation forming area.

<Sensor configuration>
A sensor 3 in FIG. 2 is a sensor for detecting the package 1, and is constituted by, for example, a light projecting / receiving sensor. In the present embodiment, as shown in FIG. 1, the light projecting sensor 31 and the light receiving sensor 32 are configured to face each other on the upstream side of the perforation forming area with the conveyance path of the package 1 interposed therebetween.

  When the sensor 3 detects the arrival of the front end of the package 1, the detection signal is sent to the control means so that perforation formation control is executed.

<Structure of perforation formation mechanism>
FIG. 4 is a front view schematically showing a configuration example of a perforation forming mechanism according to the present invention.

  4, the perforation forming mechanism 4 includes a blade unit 42 on which a perforation forming blade 42a that can be controlled to move in the vertical and parallel directions along the LM guide 41, a drive motor 43 for the blade unit 42, A stopper 44 for stopping the forward movement of the base portion 42b of the blade unit 42 to the package 1 side and a perforation forming blade 42a sandwiching the conveyance path, the upper protruding portion of the package 1 being conveyed The blade receiving portion 45 is disposed so as to face the position close to the vertical surface, and the pressing guides 46 (a, b) for pressing down a portion below the perforation forming portion of the package 1 from both sides.

<Presser guide 46>
Here, the effect of the pressing guide 46 will be described with reference to FIG.

  In this example, in the package 1, the shape of the non-accommodating portion 1d formed by the protruding portion 1a and the space immediately below it has a substantially inverted Y shape when viewed from the front. A perforation is formed in the non-flat portion (inverted Y-shaped inclined portion) 1d of the package 1.

  In that case, since the perforation forming portion is inclined (see the perforation line 1b of the package 1 in FIG. 8B), if the perforation is to be formed in this state, the perforation is moved away from the predetermined position. There is a possibility that an eye is formed or the perforation forming blade 42a is caught by the package 1 and a part thereof is torn.

  Therefore, in the present embodiment, the inverted Y-shaped inclined portion 1b, which is a non-flat portion of the package 1, is pressed from both sides by pressing guides 46 (a, b), as shown in FIG. In addition, the shape 1d of the inclined portion is deformed as the shape 1d ′, so that the perforation forming portion 1b located at the inclined portion appears on the vertical surface below the protruding portion.

  In other words, the pressing guide 46 (a, b) presses a portion (a non-flat portion in this example) between the protruding portion 1a and the accommodating portion of the package 1 from both sides, thereby forming a perforation forming portion. It is comprised so that the effect | action to stretch may be brought about.

  In this embodiment, the pressing guides 46 (a, b) that provide the stretching action are fixedly provided via a support member. However, a configuration that can control reciprocation in the horizontal direction or the vertical direction is possible. It is also good.

<Configuration of control means>
The control unit is a control unit that controls the operation of the entire apparatus, and includes a CPU and software.

  The control means performs control to form the perforation by controlling the operation of the blade unit 42 based on the detection signal of the sensor 3.

  Specifically, the control means detects that the package 1 has been conveyed to the perforation forming area based on the detection signal of the sensor, and the blade unit is in the same direction and at the same speed as the package 1 being conveyed. 42a is moved, and for example, the perforation forming blade 42a is perpendicular to the surface of the protruding portion 1a of the package 1 at a timing when the protruding portion 1a is conveyed to a predetermined position (for example, the position of the blade receiving portion 45). Then, control is performed to automatically form a perforation for opening between the projecting portion 1a of the package 1 and the accommodating portion by making it appear and retract (reciprocate) at a speed faster than the above speed. In the case of a package with a chuck that enables re-sealing and re-sealing of the bag after opening, the opening perforation is formed between the protruding portion 1a of the package 1 and the chuck portion. .

<About the trajectory of the perforation forming blade 42a>
In the present embodiment, when the perforation is formed, the blade unit 42 to which the comb-shaped blade 42a is attached is moved in the X direction parallel to the package transport direction and the vertical surface of the package (in FIG. 4). The surface of the package 1 is reciprocated in the Y direction perpendicular to the surface of the protrusion 1a.

  Here, the locus of the perforation forming blade 42a will be described with reference to FIG.

  FIG. 6 is a schematic diagram showing the trajectory of the perforation forming blade 42a according to the present invention. Reference numeral 42L in FIG. 6 shows the trajectory of the blade unit 42, and reference numeral 42aL is attached to the blade unit 42. The locus of the cutting edge of the perforation forming blade 42a is shown.

  The trajectory of the rotation of the perforation forming blade 42a is mostly circular, but the blade 42a is shaped like a comb, so that the circular motion of the blade 42a to the perforation forming portion of the package 1 remains unchanged. Does not go in and out smoothly during insertion and ejection. Therefore, in the present embodiment, Y along the rail 41a of the LM guide 41 so that the trajectory of the cutting edge of the perforation forming blade 42a becomes a trajectory 42aL combining a circular arc and a straight line as shown in FIG. By reciprocating the blade unit 42 in the direction and the X direction, the blade 42a can smoothly enter and exit from the perforation forming portion of the package 1.

  More specifically, after the base 42 b of the blade unit 42 collides with the stopper 44 in FIG. 6, the portion of the blade unit 42 above the LM guide 41 stops moving forward and moves parallel to the transport direction of the package 1. By doing so, the problem at the time of forming a perforation during conveyance of the package 1 with circular motion is solved. Further, in the present embodiment, as illustrated in FIG. 4, the blade receiving portion 45 disposed at a position close to the vertical surface of the upper protruding portion of the package 1 is provided, and the perforation is formed more smoothly. I am doing so. That is, the perforation is smoothly formed by suppressing the vertical movement of the perforation forming blade 42 a and the protruding portion 1 a of the package 1 by the blade receiving portion 45.

  Here, the operation control of the perforation forming blade 42a will be described.

<Operation control of perforated blade>
The control means described above has a pulse train control function that changes the speed of the rotational movement (in this example, arc movement and linear movement in the X and Y directions) of the perforation forming blade 42a.

  Specifically, the control means designates the rotation speed of the motor 43 shown in FIG. 4 by the parameter of the pulse train control, and at first, the perforation forming blade is faster than the conveyor conveyance speed (= moving speed of the conveyed object 1). 42a is rotated, and the perforation forming blade 42a is decelerated from the angle immediately before the perforation forming portion 1b is inserted into the perforation forming portion 1b immediately below the protruding portion 1a. A function of pulse train control of the rotational speed of the motor 43 is provided so as to accelerate immediately after that and return to the original speed.

  An operation example (overall processing flow) of the perforation forming apparatus according to the present invention having the above-described configuration will be described along the flow of the flowchart of FIG. Here, the configuration and operation already described are simplified or omitted, and a main operation example related to the formation of perforations will be described.

  First, the control means of the perforation forming apparatus activates the conveyor in accordance with an operator's operation or a command from an external computer (step S1). Then, when the package 1 as a work is put on the conveyor by a robot or by hand, the lower side and the left and right sides of the package 1 are covered with the conveyor belts 21, 22, and 23 as illustrated in FIG. The package 1 is conveyed in the state, and is conveyed while sandwiching the protruding portion 1a of the package 1 by the conveyance belt 24 and the conveyance roller 25 (step S2).

  When the package 1 sent toward the perforation forming area is detected by the sensor 3 (step S3), the control means sends a drive command to the motor 43 of the perforation forming mechanism 4 to send the blade unit 42. The rotation operation (movement operation in the X and Y directions) is started (step S4), the blade 42a of the blade unit is moved in the same direction and at the same speed as the package 1 being conveyed, and the protruding portion 1a is in a predetermined position. At the time of conveyance, the blade 42a is reciprocated in the direction perpendicular to the surface of the protrusion 1a.

  That is, the perforation forming blade 42a cuts substantially perpendicularly to the package 1 being transported, so that a perforation is made in the perforation forming portion 1b (see FIG. 8B) of the package 1.

  At this time, the protruding portion 1a is gripped from the left and right by the fourth conveyor belt 24 so that the blade 42a does not lose the resistance when cutting the perforation forming portion 1b, and the above-described pressing guide 46 (46a, 46b). By pushing down below the protrusion 1a, the perforation forming portion 1b is stretched to facilitate the formation of perforations (step S4).

  When the perforation is formed in step S4, the work (package 1) is discharged out of the perforation forming area, and the perforation forming operation of the work is finished. Then, the process returns to step 2 to repeat the process for the next workpiece.

  In addition, the workpiece | work in which the perforation was formed is shipped after being packed in a box, for example with the boxing apparatus provided in the downstream of the conveyor.

  As described above, according to the present invention, at the time of perforation formation on a package, the cutter (perforation forming blade) moves in the same direction as the package being moved, and in the meantime, against the protruding portion of the package Therefore, when entering the package, the cutter smoothly penetrates the blade from the blade edge of the cutter part and protrudes to the back side, and exits from the package. Even at the time, the cutter blade part is smoothly withdrawn without being caught on the package. Thereby, the narrow perforation corresponding to the blade width of the cutter is reliably formed in the width direction of the package.

  In the above-described embodiment, the case where the perforation is formed is described as an example for the bag-shaped package having the shape illustrated in FIG. 8, but the shape of the target package is FIG. 8. It is not limited to the example. For example, a package having a pair of opposed side surfaces parallel to each other, such as a package having no gusset portion or a package having an elliptical or hexagonal cross section in the horizontal direction. The perforation forming apparatus according to the present invention is a self-supporting package having a flat seal portion (referred to as an “upward protruding portion”) in which the opening portion is sealed in a direction parallel to the pair of surfaces. It can be suitably applied.

  In addition, the article contained in the package is preferably a plurality of sachets (sealed sachets 1A as illustrated in FIG. 8B) in which foods such as seasonings are sealed and packaged inside individual bags. However, the perforated material forming apparatus according to the present invention is preferably used as long as the articles to be packaged are not limited to a plurality of sachets or foods but are used at the time when each is necessary. Can be applied.

1 Package 1A Goods (package)
DESCRIPTION OF SYMBOLS 1a Upper protrusion part 1b Perforation formation part 1c Extraction opening part 1d Inclination part 2 Conveyance mechanism 3 Sensor 4 Perforation formation mechanism 5 Control means 21 1st conveyance belt (conveyance means for lower surfaces)
22 Second conveyor belt (conveying means for left side)
23 Third conveyor belt (right side conveyor)
24 4th conveyor belt (belt for nipping and transporting upper protrusion)
25 Conveying roller 26 Drive roller 27 (27a, 27b) Tail pulley 28 Tension pulley 29 Upper protrusion guide guide 31 Light emitting sensor 32 Light receiving sensor 41 LM guide 42 Blade unit 42a Perforation forming blade 42b Base portion 43 Motor 44 Stopper 45 Blade Receiving portion 46 (46a, 46b) Holding guide

Claims (5)

For a bag-like package in which an article to be packaged is housed in a substantially rectangular parallelepiped housing portion and the upper opening is sealed, between the flat upper protruding portion which is the sealed portion and the housing portion A perforation forming apparatus for automatically forming perforations for opening,
A transport mechanism of the package;
A sensor for detecting a package conveyed by the conveyance mechanism;
A perforation forming mechanism having a blade unit and a blade receiving portion disposed opposite to each other across the conveyance path of the conveyance mechanism;
Control means for controlling the operation of the blade unit based on the detection signal of the sensor to form the perforation;
With
The transport mechanism uses the first, second, and third transport belts whose belt surfaces are in surface contact with the lower, left, and right surfaces of the package storage unit, respectively, and the transport path of the upper protruding portion While transporting the package in an upright posture with the position in the height direction, the position in the transport path width direction of the upper protrusion, and the orientation of the surface of the upper protrusion in a predetermined position and orientation, A transporting means for transporting while sandwiching the surfaces of the upper protrusions from both sides using a fourth transport belt disposed opposite to the direction orthogonal to the transport direction of the package;
The perforation forming mechanism has a pressing guide that presses a part below the part forming the perforation from both sides,
The blade unit of the perforation forming mechanism has a perforation forming blade that can be controlled to move in a direction perpendicular to and parallel to the surface of the upper protruding portion of the package conveyed by the conveying means,
The control means moves the blade unit in the same direction and at the same speed as the package being conveyed by the conveying means based on the detection signal of the sensor, and moves the perforated blade to the surface of the upper protruding portion. On the other hand, the perforation forming apparatus controls the formation of the perforation without stopping the conveyance by the conveyance means by reciprocating in the vertical direction. The package is a package in which the shape of a non-contained portion formed by the upper projecting portion and a space immediately below the upper projected portion is a substantially inverted Y shape when viewed from the front, and the pressing guide is a non-flat portion 2. The perforation forming apparatus according to claim 1, wherein the perforation forming device is configured to stretch the perforated portion by pressing the inverted Y-shaped inclined portion from both sides. The transport mechanism includes a guide guide having a pair of guides arranged to face each other across a transport path of the package, and the pair of guides includes a package receiving portion formed in a reverse C shape in plan view, The perforation forming apparatus according to claim 1 , further comprising an upper projecting portion guide portion arranged to be opposed to each other with a gap corresponding to the thickness of the upper projecting portion of the package. The article to be packaged is a plurality of articles that are used when needed individually, and the package has the perforation portion in a state in which the upper protruding portion is cut along the perforation. The perforation forming apparatus according to any one of claims 1 to 3 , wherein the perforation forming apparatus is a package that can be used as a storage container for the article as an opening for removing the article. The perforation forming apparatus according to any one of claims 1 to 4 , wherein the package is a plurality of sachets in which foods are sealed and packaged inside individual bags.