JP2015003766A - Sealing device of packaging bag, sealing set provided with the same and sealing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealing device of a packaging bag which reduces sealing time of a bag by enhancing interior suction efficiency, avoids problems of vibration, noise and cost performance by mounting a relatively small suction pump, and achieves a relatively compact vacuum chamber and device configuration.SOLUTION: A sealing device of a packaging bag includes: a sealing space 30 which can store the bag mouth of a packaging bag in the sealing space to seal it; an opening/closing mechanism 2 which brings the sealing space into an opened state or a closed state; seal mechanisms 4 which are respectively provided at corresponding positions of the sealing space 30 and the opening/closing mechanism 2 and contact or separate from each other with the opening/closing of the opening/closing mechanism; and lock pins 5 which are projectingly formed from the chamber bottom closer to the width direction center in the sealing space 30 to be locked to pin holes of the bag mouth stored in the chamber. Each lock pin 5 is internally communicated with a suction pump for reducing pressure in the chamber and includes a pin hole 5H for decompression and suction formed in the projected side face or top face.

Description

  The present invention relates to a packaging bag sealing device that seals a bag mouth as a state in which a bag of a packaging bag is degassed or filled with a filling gas, and keeps the bag in a degassed state or in a gas-filled state. The present invention relates to a (vacuum packaging or filling packaging device), a sealing (vacuum packaging or filling packaging) set including the sealing device and a packaging bag, and a sealing method in a vacuum packaging or filling packaging state of the packaging bag.

  As a vacuum packaging machine that seals the opening of a bag and keeps the inside of the bag airtight, it has conventionally been a recessed part that consists of a fixed part and a cover part that are attached so as to be openable and closable. There is disclosed a vacuum packaging machine in which packing is provided around the recessed portion of the fixed portion and the lid portion, a sealing mechanism is provided in front of the recessed portion, and an intake hole is provided in the recessed portion of the fixed portion (Patent Document) 1). This has a plurality of pins for positioning the vacuum packaging bag in the recessed portion of the fixed portion, and is provided with a deaeration tube on the side of the vacuum chamber. The positioning pins for the vacuum packaging machine In addition, the positioning hole of the vacuum packaging bag containing the article is inserted, the lid is closed, the inside of the bag is deaerated by suction of the vacuum chamber, and the opening of the bag is fused and sealed by a sealing mechanism It is supposed to be.

Conventionally, the suction chamber case has a shallow and long box shape with an upper surface opened, and a lower pad member is attached to the periphery, and an upper pad member is attached to the lower surface periphery facing the lower pad member. A suction chamber assembly comprising a suction chamber lid that closes the opening of the suction chamber so as to form a suction chamber, and a suction pipe provided on the bottom surface of the suction chamber case;
A recess for housing the suction chamber assembly; a sealing member for sealing an opening of a bag whose tip is inserted into the suction chamber case; a sealed pack body having a suction pump for decompressing the suction chamber; and the sealed pack A sealed pack comprising an upper lid that is pivotally supported by the main body of the container and presses the suction chamber lid to close the suction chamber by pressing the suction chamber lid so that the upper pad member and the lower pad member are in close contact with each other. A vessel is disclosed (see Patent Document 2). In this hermetic pack device, a suction pipe projects from one side of the bottom of the horizontally long suction chamber, and this suction pipe is connected to a suction pump P to suck down the suction chamber under reduced pressure.

JP 2003-040214 A Japanese Patent No. 4365477

However, each of the above conventional vacuum packaging machines or sealed pack machines is provided with a tube or suction tube as a suction portion on one side of a bag set in a vacuum chamber (suction chamber). The inside of the bag is sucked and depressurized from the tube, and after the bag is brought into the suction state, the sealing of the bag mouth is started by the sealing mechanism. Since it is necessary to suck the indoor space and the bag space in order from one side end of the room, it cannot be said that the efficiency of vacuum decompression is good, and it takes time until the bag is sealed or relatively large. Since the suction pump is provided, there is a problem that vibration and noise are generated, which causes a problem of cost performance.

In addition, since it is necessary to provide a suction part at one side of the bag set in the vacuum chamber and not in contact with the bag mouth, the vacuum chamber becomes larger in the width direction and the device cannot be configured compactly. Existed.

  Therefore, the present invention improves the suction efficiency in the room, shortens the sealing time of the bag, and can be equipped with a relatively small suction pump, thereby avoiding problems of vibration, noise, and cost performance. It is an object of the present invention to provide a sealing device (vacuum packaging machine) for a packaging bag having a relatively compact configuration and a device configuration, and a sealing (vacuum packaging) set including the sealing device and the packaging bag. .

  In order to solve the above problems, the present invention adopts the following configurations (1) to (7).

(1) The sealing device of the sealing type packaging bag of the present invention has the following characteristics as a configuration in which pressure is reduced from a pin hole in a locked state by a locking pin. That is, a sealing device that seals the bag mouth with a predetermined state inside the bag of the packaging bag (P) provided with a plurality of locking holes (PH) for locking in the bag mouth portion,
A sealed space (30) having an indoor width equal to or larger than the width of the bag mouth of the packaging bag (P) is provided, and a packaging bag (from one specific side as viewed from the sealed space (30) is provided in the sealed space (30). A sealed chamber (3) capable of containing and sealing at least part of the bag mouth of P);
An opening and closing mechanism for opening and closing the sealed space (30) of the sealed chamber (3);
Each of the sealed chamber (3) and the opening / closing mechanism is provided at a corresponding position closer to the specific one-side direction when viewed from the sealed space (30), and a bag mouth is introduced or opened according to the opening / closing of the opening / closing mechanism. A sealing mechanism (4) (sealing mechanism and sealing mechanism receiving portion) for sandwiching the mouth and heat sealing;
One or a plurality of protrusions are formed in the sealed space (30) of the sealed chamber (3), and are inserted into the locking holes (PH) of the bag mouth of the packaging bag (P) sealed and accommodated in the sealed chamber (3). A locking pin (5) for locking each;
At least one of the locking pins (5) communicates internally with a suction mechanism (P) for vacuum-suctioning the inside of the packaging bag (P) hermetically accommodated in the hermetic chamber (3) and protrudes. A pin hole (5H) for suction under reduced pressure is formed in the side surface or top surface,
In the set state in which the locking holes (PH) of the packaging bag (P) are locked to the corresponding locking pins (5), between the locking pin (5) and the edge of the locking hole (PH). There is a gap formed in the
The pin hole (5H) communicates with the inside of the sealed chamber (3) and the sealed chamber (3) through a gap formed between the locking pin (5) and the edge of the locking hole (PH). The pressure inside the packaging bag (P) is reduced,
A sealing device for a packaging bag, wherein a sealing mechanism (4) in contact with the lower part of the bag mouth is actuated to seal the packaging bag (P) when a predetermined reduced pressure state is reached.

  The sealing device specifies a form of sealing in a state where the inside of the packaging bag is deaerated by the decompression mechanism. Since the bag mouth is locked at a plurality of positions near the center with a plurality of locking pins, and the inside of the packaging bag is directly sucked from this locking portion, the bag is first sealed and deaerated, and then the interior of the bag A constant decompression state occurs. For this reason, the inside of the bag can be efficiently deaerated, the deaeration time until the seal mechanism is activated can be shortened, and the vacuum pump for deaeration can be made relatively small. Further, since the suction part is provided at a position overlapping the bag mouth accommodated in the sealed space, it is not necessary to secure a space for storing the suction part on the side of the sealed space, and the sealed space can be formed relatively compactly. . By miniaturizing and accommodating the vacuum pump and making the sealed space relatively compact, the entire device can be made relatively compact.

Here, in the set state before the plurality of locking pins 5 are locked in the locking holes of the packaging bag and the suction is started, the locking pins 5 and the locking hole PH edge (front pin hole edge PH1, back pin hole) A gap G is formed with the edge PH2) (see FIG. 7), and the pin hole 5H sucks the gas in the packaging bag from the gap G. In the locked state, the locking hole PH and the locking pin 5 are not completely in close contact with each other, and a gap G is formed between them so as to ensure that the suction air flow volume is relatively large. The suction efficiency can be further increased.
In particular, since the pin hole 5H is provided to open to the side peripheral portion of the locking pin 5 and a gap G is formed around the locking pin in the set state of the packaging bag, the locking pin Will be sucked from. By sucking from the substantially entire circumferential direction of each of the plurality of locking pins provided near the center of the sealed space, it is possible to increase the height from the inside of the accommodated and locked bag to the pin hole 5H and from the sealed space to the pin hole 5H at the same time. It can be sucked with efficiency.

(2) Moreover, the sealing apparatus of the sealing type packaging bag of this invention has the following structures which perform gas filling by the pin hole of a latching pin with the latching state by a latching pin.
That is, a sealing device that seals the bag mouth in a predetermined state inside a packaging bag provided with a plurality of locking holes for locking in the bag mouth portion,
Provided with a sealed space with a room width equal to or larger than the mouth width of the bag mouth of the packaging bag, and in this sealed space, at least a part of the bag mouth of the packaging bag can be accommodated and sealed from a specific side as seen from the sealed space. A sealed chamber;
An opening and closing mechanism for opening and closing the sealed space of the sealed chamber;
One or a plurality of protruding protrusions are formed in the sealed space of the sealed chamber, and each includes a locking pin that locks into a locking hole of the bag mouth of the packaging bag that is hermetically accommodated in the sealed chamber,
At least one of the locking pins is in internal communication with a gas supply mechanism that fills a packing bag hermetically contained in a hermetically sealed chamber and supplies a filling gas into the protruding side surface or top surface. A pin hole is formed,
Each of the sealed chamber (3) and the opening / closing mechanism is provided at a corresponding position closer to the specific one side direction as viewed from the sealed space (30), and a bag mouth is introduced according to opening / closing of the opening / closing mechanism. A sealing mechanism (4) for heat sealing by sandwiching
One or a plurality of protrusions are formed in the sealed space (30) of the sealed chamber (3), and are inserted into the locking holes (PH) of the bag mouth of the packaging bag (P) sealed and accommodated in the sealed chamber (3). A locking pin (5) for locking each;
At least one of the locking pins (5) is in internal communication with a gas supply mechanism (7) that fills a packing bag (P) hermetically accommodated in the hermetic chamber (3). In addition, a pin hole (5H) for supplying a filling gas is formed in the protruding side surface or top surface,
In the set state in which the locking holes (PH) of the packaging bag (P) are locked to the corresponding locking pins (5), between the locking pin (5) and the edge of the locking hole (PH). There is a gap formed in the
The pin hole (5H) communicates with the inside of the sealed chamber (3) and the sealed chamber (3) through a gap formed between the locking pin (5) and the edge of the locking hole (PH). Fill the packing bag (P) with filling gas,
The sealing mechanism (4) that is in contact with the lower part of the bag mouth is actuated to seal the packaging bag (P) when a gas filling state in which a predetermined gas supply amount is supplied is achieved. Packaging bag sealing device.

The sealing device specifies a form (a mechanism portion by a gas supply mechanism in Examples 8 and 9 described later) that is sealed in a state where a packing bag is filled with a gas by a gas supply mechanism. Since the bag mouth is locked at a plurality of positions near the center with a plurality of locking pins, and the filling gas is directly filled into the packaging bag from this locking portion, the inside of the packaging bag is first filled with gas, then the interior Becomes a certain gas filling state. For this reason, the bag can be filled with gas efficiently, the gas filling time until the sealing mechanism is activated is shortened, and the gas supply mechanism for gas filling (for example, a pressurized gas supply tank or gas cylinder) is relatively small. It can be made. In addition, since the gas supply port is provided at a position that overlaps with the bag mouth accommodated in the sealed space, it is not necessary to secure a space for arranging the gas supply port on the side of the sealed space, and the sealed space is made relatively compact. Can be formed. For example, by reducing the size of the gas supply mechanism for gas filling (for example, a pressurized gas supply tank or gas cylinder) and storing it in the main body casing, and making the sealed space relatively compact, the overall device can be made relatively compact. Can be configured. Here, in the set state before the plurality of locking pins 5 are locked in the locking holes PH of the packaging bag and gas filling is started, the locking pins 5 and the locking hole PH edge (the front pin hole edge PH1, A gap G is formed between the pin hole 5H and the back pin hole edge PH2) (see FIG. 7), and the pin hole 5H is filled with a filling gas from the gap G into the packaging bag. In the locked state, the locking hole PH and the locking pin 5 are not completely in close contact with each other, and a gap G is formed between them, so that the flow volume of the filled gas flow is ensured to be relatively large. Gas filling efficiency can be further increased.
In particular, since the pin hole 5H is provided to open to the side of the locking pin 5 and the gap G is formed around the locking pin in the set state of the packaging bag, the locking pin is moved from the side circumferential direction. Gas filling will occur. By filling the gas from the substantially circumferential direction of each of the plurality of locking pins provided near the center of the sealed space, from inside the package bag that is housed and locked to the pin hole 5H, and from the sealed space to the pin hole 5H. At the same time, gas can be filled with high efficiency.
The gas supply mechanism for filling the gas may be provided in combination with the opening / closing mechanism of one sealing device and the casing body in combination with the pressure reducing mechanism by the vacuum pump. For example, Examples 8 and 9 to be described later correspond to this form. Alternatively, only the gas supply mechanism for performing the gas filling without having the pressure reducing mechanism by the vacuum pump may be installed independently in the opening / closing mechanism and casing body of one sealing device. That is, according to the packaging object of the packaging bag and the usage after packaging, at least one of a mechanism for decompression or gas filling can be provided as the apparatus specification. Alternatively, either a gas supply mechanism that performs gas filling or a pressure reduction mechanism that uses the vacuum pump may be switchably installed so as to be selectively connected by external connection.

(3) Moreover, the sealing device of the sealing type packaging bag of the present invention has a plurality of sealed spaces and uses the pin holes of the locking pins while being locked by the locking pins provided in each sealed space. In order to perform pressure reduction and / or gas filling, the following configuration is provided.
A sealing device for sealing a bag mouth of a packaging bag provided with a plurality of locking holes for locking in a bag mouth portion, at least,
Provided with a sealed space with a room width equal to or larger than the mouth width of the bag mouth of the packaging bag, and in this sealed space, at least a part of the bag mouth of the packaging bag can be accommodated and sealed from a specific side as seen from the sealed space. A sealed chamber;
An opening and closing mechanism for opening and closing the sealed space of the sealed chamber;
Each of the sealed chamber and the opening / closing mechanism is provided at a corresponding position closer to the specific one side direction as viewed from the sealed space, and a bag mouth is introduced according to opening / closing of the opening / closing mechanism, or the bag mouth is sandwiched and heated and sealed. A sealing mechanism to wear;
One or a plurality of protruding protrusions are formed in the sealed space of the sealed chamber, and each includes a locking pin that locks into a locking hole of the bag mouth of the packaging bag that is hermetically accommodated in the sealed chamber,
The sealed space (30) houses a first sealed space (30A) that can accommodate and seal a part of the bag mouth of the packaging bag (P), and a remaining part of the bag mouth of the packaging bag (P). A second sealed space (30B) that can be sealed;
The locking pin (5) is formed to protrude in the first sealed space (30A) and the second sealed space (30B) by one or more, respectively.
The locking pin (5) provided in the first sealed space (30A) communicates internally with a suction mechanism (P) for decompressing the interior of the chamber, and is used for decompression suction on the side surface or top surface of the pin tip. A pin hole (5H) is formed,
The locking pin (5) provided in the second sealed space (30B) is in internal communication with a gas supply mechanism (7) for pressurizing the interior with a filling gas, and at the side or top surface of the pin tip. Is formed with a pin hole (5H) for vacuum suction,
The suction step from the pin hole (5H) of the locking pin (5) in the first sealed space (30A), and the pin hole (5H) of the locking pin (5) in the second sealed space (30B) And the gas filling process starting from the above, and when the gas replacement state in which the internal air is replaced with a predetermined filling gas is started, the sealing mechanism (4) that is in contact with the lower part of the bag mouth interposed therebetween Is operated to seal the packaging bag (P).

  The sealing device can fill the packaging bag with the gas by the gas supply mechanism before sealing the packaging bag, and degass the packaging bag by the decompression mechanism including the vacuum pump by the same device. It is possible to specify the forms that can be performed (the mechanism part by the pressure reducing mechanism in Examples 8 and 9 and the mechanism part by the gas supply mechanism in Examples 8 and 9). For example, when both the gas supply mechanism and the pressure reducing mechanism are used before sealing a single packaging bag, the bag mouth is locked at a plurality of positions near the center with a plurality of locking pins, and from this locking portion. Since the filling gas is directly filled in the packaging bag, the filling gas can be efficiently replaced in the packaging bag. In particular, when the operating time of each mechanism is overlapped and operated simultaneously, gas is charged in the bag efficiently because the original air in the packaging bag is degassed at the same time. In addition, the gas filling time until the sealing mechanism is activated can be shortened, and the gas supply mechanism for gas filling (for example, a pressurized gas supply tank or a gas cylinder) can be made relatively small. By starting the suction process and the gas filling process simultaneously or continuously with a predetermined time difference, the gas replacement state can be quickly achieved. In the embodiment, there is provided a selection mechanism for selecting a single operation mode of filling the filling gas into the packaging bag, a single operation mode of gas degassing in the packaging bag, or an overlapping operation mode of these mechanisms. The operation of each mechanism can be performed selectively or in an overlapping manner by operating the switch.

Moreover, two sealed spaces which consist of a 1st, 2nd sealed space among this structure are set in the state connected in the bag, respectively, in the state divided together. One of the sealed spaces communicates with the gas supply mechanism, and the other communicates with the decompression mechanism. And either gas filling or pressure reduction is performed from the pin hole of the locking pin provided in each sealed space. This gas filling or decompression may be performed simultaneously, may be performed sequentially at different times, or only one or the other may be performed independently. In the above embodiment, the first sealed space and the second sealed space communicate with each of the gas supply mechanism and the decompression mechanism. However, all of the gas supply mechanism and the decompression mechanism are the same in a plurality of sealed spaces. It may be communicated with. As another embodiment, each sealed space may be communicated with each of a gas supply mechanism and a decompression mechanism in a switchable manner. For example, when the first sealed space and the gas supply mechanism are in communication with each other, the second sealed space and the pressure reducing mechanism are in communication with each other. For example, when the second sealed space and the gas supply mechanism are in communication with each other by switching. The first sealed space and the pressure reducing mechanism may be in communication. The gas supply mechanism and the pressure reducing mechanism are operated for a preset time by the switch operation, and are stopped in a state where the sealed space is at a predetermined pressure. In the gas supply mechanism of the embodiment, the filling gas is supplied from the variable volume pressurized tank by opening the solenoid valve, and when the volume of the pressurized tank falls below a predetermined value, the gas is automatically supplied by the contact of the switch plate. The supply is stopped.

(4) The gas supply mechanism (7)
A gas supply tank (T) having a tank port portion (S) communicating with a pin hole (5H) for supplying a filling gas and having a filling gas filled in the tank;
A switch plate (P) provided to partition the inside of the gas supply tank (T), and
The switch plate (P) moves so as to vary the partition position in the tank according to the increase or decrease of the pressure in the tank, and varies the tank volume of the gas supply tank (T).
The switch plate (P) gradually moves closer to the tank mouth (S) along with the filling gas supply from the tank to the filling gas supply pin hole (5H),
The gas supply is automatically stopped when the switch plate (P) moved close to the upper limit in pressure contact with the tank port (S) while the charged gas in the tank is below the critical amount. The sealing device of the packaging bag of Claim 2 or 3.

  Based on the premise of a sealing device provided with a gas supply mechanism (7), the sealing device automatically supplies a predetermined volume of filling gas after the gas supply switching operation and automatically stops after the gas supply. The structure is specified (the gas supply mechanism of Examples 8 and 9 described later shown in FIG. 14). After the filling gas supply from the gas tank is started by releasing the valve of the second hose (H2), the tank volume of the gas tank is automatically changed by the movement of the switch plate (P) according to the pressure in the tank, and the tank volume is reduced. When the lower limit is reached, the switch plate (P) comes into pressure contact with the tank port (S) to close the tank port (S), so that the gas supply is automatically stopped. After the gas supply, the pressure in the tank does not increase until the gas is newly filled in the tank, so that the automatic stop state in pressure contact with the tank port (S) is maintained. This automatic stop state is automatically canceled when the switch plate moves downward in the tank by gas filling from the gas cylinder.

(5) Further, in the sealing device for any of the above packaging bags, as a form of forming the pin hole 5H,
A plurality of pin holes (5H) of each locking pin (5) may be provided on the side surface of the locking pin (5) at different circumferential positions around the pin.
Different circumferential positions around the pins are provided at symmetrical positions on the left and right sides when viewed from the set packaging bag, for example, when the packaging bag is received from the lower side in plan view of the sealed space (described later in Example 1). ) Moreover, it is good also as what is provided in the up-down symmetrical position seeing from the packaging bag of a set state like the (a) (c) Example of FIG. Furthermore, it is preferable that one or a plurality of recesses 5D is formed in the locking pin, and a pin hole 5H is formed in the recess 5D. For example, in the first embodiment, the recessed portions 5D are formed so as to have a substantially L-shaped cross section from the left and right sides of the top of the locking pin 5 to the left and right side surfaces, and the vertical direction is within the bent surface of each recessed portion 5D. A pin hole is formed to extend to open.
If it is such, a pin hole will be provided in the circumferential direction of a pin side surface by each plurality of each locking pin, and the suction efficiency of sealed space can be improved more.

(6) Moreover, in the sealing device for any of the above packaging bags, as a pin suspending mode by the locking pin 5,
The plurality of locking pins (5) are fixed with a supporting strength for suspending the packaging bag (P), and the packaging bag (P) is accommodated vertically downward with the sealed chamber (3) closed. It is good also as what can be installed toward and can suspend a packaging bag (P). At this time, it is used in a vertically placed state.

(7) Moreover, as a sealing method of the packaging bag (P) by the two-stage sealing using any one of the above-mentioned packaging bag sealing devices, the following configuration may be used.
A packaging bag (P) provided with a plurality of locking holes (PH) for locking and holding the bag itself at the bag mouth portion is used as a sealing object, and the contents are stored by a predetermined sealing device. A sealing method in which the inside of the bag (P) is degassed and the bag mouth is sealed in a degassed state,
The predetermined sealing device is at least:
A sealed space (30) having a width equal to or larger than the width of the bag mouth and having an upper opening is provided, and a packaging bag is provided in the sealed space (30) from a specific one side direction as viewed from the center of the sealed space (30). A sealed chamber (3) that can accommodate and seal the bag mouth of (P);
An opening and closing mechanism that opens and closes the sealed space (30) by opening and closing;
A sealing mechanism (4) provided at a corresponding position in the specific one-side direction of the sealed chamber (3) and the opening / closing mechanism, and introducing or sandwiching a bag mouth according to opening / closing of the opening / closing mechanism; ,
A plurality of pumps projecting from the bottom of the sealed chamber (3) near the center in the width direction, locked to the locking holes (PH) of the bag mouth accommodated in the chamber, and decompressing the chamber; A locking pin (5) in internal communication;
A pin hole for decompression suction (5H) formed in the protruding side surface or top surface of each locking pin (5) and communicating with the suction pump in the locking pin (5);
Comprising a sealing device comprising
The seal mechanism (4) includes either an upper seal mechanism (42) or a seal mechanism receiving portion that sandwiches the bag mouth portion of the packaging bag from above and below in accordance with the closing operation of the opening / closing mechanism, and a lower seal disposed to face the upper seal mechanism (42). A sandwiching structure consisting of a mechanism (41),
The mouth end of the bag mouth of the packaging bag P containing the contents is pressed against the side of the sealed space near the top of the lower seal mechanism (41) in the open state, and pressed. The vicinity of the lower end of the mouth end is sandwiched by the sandwiching structure (the lower seal mechanism (41) and the upper seal mechanism (42), or the lower seal mechanism (41) and the seal mechanism receiving portion), and the seal mechanism is operated to perform the primary operation. A primary sealing step for heat sealing;
Each locking hole (PH) of the packaging bag (P) after the first heat sealing is locked to each locking pin (5) in the sealed chamber (3), the open / close mechanism is closed, and the sealed chamber (3 ) In a hermetically sealed state, and a set process in which the sealed chamber and the inside of the packaging bag are in a state of ventilating communication from the pin hole (5H) of the locking pin (5);
A pressure reducing step of sucking the gas in the sealed chamber (3) after the setting step from the pin hole and reducing the pressure in the packaging bag (P) and the sealed chamber (3) until a predetermined reduced pressure state is obtained;
When the inside of the packaging bag (P) and the inside of the sealed chamber (3) are in a predetermined decompression state in the decompression step, the seal mechanism (4) is operated, and the engagement of the packaging bag (P) in the setting step. And a secondary sealing step in which a portion sandwiched by a sealing mechanism below the lower edge of the stop hole (PH) is secondarily heated and sealed.

According to the above process, as shown in an example (FIG. 6) to be described later, first, the vicinity of the mouth end portion ahead of the locking hole edge is first sealed, and the packaging bag is preliminarily sealed. Next, the inside of the packaging bag or the sealed space is depressurized from the pin hole 5H provided in the locking pin, and after the depressurization, the lower position closer to the bottom side than the pin hole edge is secondary. It has a two-stage sealing process such as sealing and sealing. By first aligning the bag mouth end by primary sealing and making it easy to lock to the locking pin, the setting operation for secondary sealing becomes extremely easy. Moreover, since the temporary sealing state is simple sealing, the contents are not easily spilled. Furthermore, since the mouth end is closed by temporary sealing, the inside of the packaging bag can be decompressed efficiently. By these, when sealing and sealing a large number of packaging bags, the sealing and sealing process can be continuously performed by collectively performing each process in a number of packaging bag groups.

In addition to the above, in the sealing device for the sealing type packaging bag,
At least a part of the pin side surface of each locking pin is formed obliquely with respect to the bottom surface of the chamber, whereby the locking pin 5 is locked obliquely with the locking pin 5 locked in the locking hole of the packaging bag. It is preferable that a gap G is formed between the formed portion and the locking hole PH edge (front pin hole edge PH1, back pin hole edge PH2).
If it is such, the clearance gap G for a suction channel can be ensured reliably by a pin structure, and suction efficiency can be improved more. For example, as shown in FIG. 10 (b), a recessed hole is formed by a notch, thereby forming an oblique side surface portion, and as shown in FIG. By doing so, the side portion may be formed.

In addition to the above, in the sealing-type packaging bag sealing apparatus, at least one of the outer peripheral portions of the locking pin is offset so as to be shifted toward the hole center side from the hole edge of the locking hole of the packaging bag. Thus, in the set state in which the locking pin 5 is locked to the locking hole of the packaging bag, the side portion between the adjacent locking pins 5 and the locking hole PH edge (front pin hole edge PH1, A gap G is preferably formed between the back pin hole edge PH2).
The above offset formation means that a part of the outer periphery of the locking pin formed at the corresponding position of the locking hole of the packaging bag is slightly shifted from the hole edge of the pin hole to form the gap G in the set state. Say what you do. The offset formation is classified into two types: an offset of the outer shape of the pin formed as a recess on the locking pin side, and an offset of a hole edge shape formed as a recess on the pin hole side.

As an offset of the outer shape of the pin, for example, a recess or notch is formed in a part of the locking pin, so that a part of the locking pin locked in the pin hole is recessed to form a gap G Is included. In addition, as an offset of another pin outer shape, for example, a locking pin is formed by a side surface made of a conical surface gradually reducing the diameter in the protruding direction (changing the cross-sectional shape along the protruding axis), thereby engaging with the pin hole. A part in which a part of the stopped locking pin is recessed to form the gap G is also included.

Further, as the offset of the hole edge shape formed in the concave portion on the pin hole side, for example, the hole diameter of the pin hole is formed larger than the pin diameter of the locking pin, so that the hole edge is wider than the pin outer shape and the gap G is formed. Is included. In addition, as an offset on the other pin hole side, for example, one in which the minimum distance between opposing side surfaces of adjacent locking pins is shorter than the minimum distance between adjacent pin hole edges of the packaging bag is included.

With at least one or a combination of these, in a state where the locking pin 5 is locked in the locking hole of the packaging bag, the side portion between the adjacent locking pins 5 and the locking hole PH edge (front pin hole edge PH1). , The back pin hole edge PH2) is preferably formed with a gap G.

  The present invention employs the above-mentioned means to increase the efficiency of suction in the room, shorten the sealing time of the packaging bag, and enable the installation of a relatively small suction pump, thereby eliminating vibration, noise, and cost performance problems. A packaging bag sealing device (vacuum packaging machine) that avoids and has a relatively compact vacuum chamber and device configuration, and a sealing (vacuum packaging) set comprising this sealing device and a packaging bag are provided. It was decided to do.

1 is a perspective external view of a sealing device according to Embodiment 1. FIG. 1 is a front view of a sealing device according to Embodiment 1. FIG. The side view of the sealing apparatus of Example 1. FIG. The side view of the closed state (substantially sealed state) of the sealing apparatus of Example 1. FIG. Explanatory drawing of the 1st sealing method by the sealing apparatus of Example 1, and the sealed packaging bag. Explanatory drawing of each process of the 2nd sealing method by the sealing apparatus of Example 1. FIG. FIG. 6 is a perspective explanatory view around the locking pin 5 in a set state by the sealing device of the first embodiment. FIG. 4 is a side sectional view, a front view, and a perspective view of a locking pin 5 of Example 2. The sectional side view and front view of the locking pin 5 of Example 3. Side sectional drawing of the locking pin 5 of Examples 4-7. Explanatory drawing of the deaeration state by the conventional sealing apparatus. Explanatory drawing of the 1st, 2nd sealing process by the sealing apparatus of Example 8. FIG. Explanatory drawing of the gas cylinder attachment state of the sealing apparatus of Example 8. FIG. Explanatory drawing of the state after the gas cylinder attachment of the sealing apparatus of Example 8. FIG. FIG. 10 is a mechanism explanatory view of a gas tank in a gas supply mechanism of an eighth embodiment. FIG. 10 is a perspective view illustrating a configuration of a gas supply mechanism according to a ninth embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the invention will be described with reference to the drawings shown as examples. In any of the embodiments, the present invention is such that the inside of the bag of the packaging bag P in which a plurality of locking pin holes are provided in the bag mouth portion is degassed or gas filled, and the bag is degassed or gas filled. A sealing device for sealing a mouth, and at least as a configuration thereof,
-A sealed space having an indoor width that is equal to or larger than the width of the bag mouth of the packaging bag P, and in which the bag mouth of the packaging bag can be accommodated and sealed from a specific side when viewed from the sealed space. 30 and
The opening / closing mechanism 2 that opens and closes the sealed space 30;
A lower seal mechanism 41 and an upper seal mechanism 42 that are provided at positions close to the specific one side of the sealed space 30 and the opening / closing mechanism 2 so as to be able to be separated from each other.
A plurality of protruding projections in the sealed space 30 and locking pins 5 respectively locking the pin holes of the bag mouth accommodated in the room;
A pin hole 5H for vacuum suction or gas filling formed in at least one pin side surface or top surface of the plurality of locking pins 5;
-It has at least any one of the decompression suction mechanism or the gas supply mechanism, which is in selective communication with the pin hole 5H through the internal space of the locking pin 5.

Then, in the set state in which the locking holes of the packaging bag are locked to the corresponding locking pins 5 respectively, the locking pins 5 and the locking hole PH edge (front pin hole edge PH1, back pin hole edge PH2) A gap G is formed between and
The pin hole 5H extends from the gap G formed between the locking pin 5 and the locking hole PH edge (front pin hole edge PH1, back pin hole edge PH2) in the packaging bag and in the sealed state 30 in a sealed state. The inside is depressurized or gas is supplied,
When a predetermined pressure-reduced state or gas-filled state is reached, the sealing mechanisms 41 and 42 that are in contact with each other with the lower part of the bag mouth interposed therebetween are actuated to seal the packaging bag.
However, the configuration of the embodiment may be such that only vacuum deaeration in the packaging bag is performed by a vacuum pump as a vacuum suction mechanism, or only gas filling into the packaging bag is performed by a gas supply tank as a gas supply mechanism. . In these cases, only one of a vacuum pump as a decompression suction mechanism and a gas supply tank as a gas supply mechanism is provided in the main body casing, and either one is not provided. Further, as another embodiment, a packaging bag is provided by providing both a vacuum pump as a decompression suction mechanism and a gas supply tank as a gas supply mechanism, and switching a communication mechanism internally communicating with the pin hole 5H of each locking pin 5. The vacuum degassing inside or the gas filling into the packaging bag may be performed simultaneously or continuously with a time difference. Hereinafter, each configuration will be described in detail.

(Main body casing 1)
The main casing 1 has a mounting surface having a size including a bag shape of a packaging bag on one side surface, and is formed of a flat box-like body in which a vacuum pump and a power supply unit are accommodated. An opening / closing mechanism 2 including an opening / closing lid frame that is opened / closed by the lid hinge 2A is provided on the placement surface side at an end portion of the placed packaging bag on the bag mouth side. In addition, a bag holding mechanism 6 including an opening / closing cover frame that is opened and closed by a cover hinge 6A is provided on the mounting surface side at an end portion on the bag bottom side of the mounted packaging bag. Each of the opening / closing mechanism 2 and the bag holding mechanism 6 changes from a closed state in contact with the placement surface to an open state rotated approximately 90 degrees by hinge rotation. The maximum opening position of the opening / closing cover frame of the bag holding mechanism 6 is fixed by a quarter-columnar stopper 6S provided at the lower center of the main body casing.

The main body casing 1 is also used in a horizontally placed state in which the packaging bag is laid down on the placement surface, or in a horizontally placed state in which the packaging bag is suspended by the locking pin and placed on the placement surface. In addition to use, the packaging bag can be suspended by installing the packaging bag in a vertically downward direction with the main body casing upright and the sealed space closed. It can be used vertically.

In addition, the mounting surface of the main casing 1 extends in the width direction along one side of the upper gasket 32 and the lower structure (comprising the frame base 3F and the lower gasket 31) of the decompression mechanism fixed in a four-sided frame shape. A fixed base plate-like lower seal mechanism 41 is formed adjacently. The lower gasket 31 and the lower seal mechanism 41 are concealed so as to face the lower gasket 31 and the lower seal mechanism 41 provided on the mounting surface in a state where the opening / closing mechanism 2 is closed. Moreover, it exposes upwards with the opening / closing mechanism 2 opened.
The main casing 1 contains at least one of a vacuum suction mechanism and a gas supply mechanism that are connected to the pin holes 5H of the respective locking pins, and a circuit board E and a power supply unit PM that are electrically connected thereto. An example of the vacuum suction mechanism is a diaphragm type vacuum pump CV. Examples of the gas supply mechanism include a communication mechanism including a gas supply tank T, a check valve CV, a regulator 7, and a gas cylinder B. When the power supply unit PM is an external power supply type, the power cord C connected to the power supply unit extends to the outside of the main casing 1.

(Opening / closing mechanism 2)
The opening / closing lid frame of the opening / closing mechanism 2 is a half-open box with a three-sided frame plate that encloses the upper part of the mounting surface at a predetermined height over the entire width and an end plate that covers the outer end of the three-sided frame portion. It is configured integrally. In other words, the box-shaped opening / closing lid frame has one side surface in the central direction of the mounting surface and two lower surfaces facing the mounting surface, and is attached to the mounting surface end of the main casing 1 so as to be openable and closable.
The opening / closing mechanism can be opened and closed by rotating the shaft around the lid hinge 2A. Specifically, a substantially triangular plate-like support arm is extended and formed on both sides of the three-way frame plate of the opening / closing lid frame, and this support arm is placed in a guide recess provided on the side surface of the end portion of the casing. And is rotatably supported by a lid hinge 2A penetrating the arm tip and the guide recess surface. In the closed state shown in FIGS. 1 to 3, both side portions and the end plate of the three-sided frame plate abut so as to surround one end portion of the placement surface. In this closed state, the upper and lower structures of the decompression unit 3 come into contact with each other to seal the sealed space 30, and the pair of upper and lower seal mechanisms 4 (41, 42) come into contact with each other and can be heat-sealed.
In the open state shown in FIG. 4, the contact with the mounting surface is released, and the lower portion of the decompression unit 3 and the lower seal mechanism 41 provided on the surface of the one end portion of the mounting surface are exposed. In this open state, the upper and lower structures of the decompression unit 3 are separated from each other, the lower portion of the sealed space 30 is opened upward, and the pair of upper and lower sealing mechanisms 4 (41, 42) are separated.

In addition, on the inner surface of the opening / closing lid frame of the opening / closing mechanism 2, the surface facing the mounting surface is extended in the width direction along one side portion of the upper gasket 32 fixed in a four-sided frame shape. A fixed plate-like upper seal mechanism 42 is formed adjacently and exposed. The upper seal mechanism 42 is fixed to one side of the upper gasket 32 near the center of the mounting surface. The upper gasket 32 and the upper seal mechanism 42 are provided so as to be exposed downward at corresponding positions so as to face the lower gasket 31 and the lower seal mechanism 41 provided on the mounting surface in a state where the opening / closing mechanism 2 is closed. .

(Decompression unit 3)
The decompression unit 3 includes a sealed space 30 that is substantially sealed or opened by an opening / closing mechanism, and a pin hole 5 </ b> H that is a decompression mechanism formed in communication within the sealed space 30. The bag mouth portion of the packaging bag is accommodated in the sealed space 30, and the air in the accommodated bag mouth is decompressed by the pin hole 5H serving as a decompression mechanism. The sealed space 30 is provided with a sealed space having an indoor width equal to or larger than the mouth width of the bag mouth of the packaging bag P, and the bag mouth of the packaging bag can be accommodated in this sealed space from one specific side as viewed from the sealed space. Specifically, the sealed space 30 includes a frame 3F provided in a four-sided frame shape near one end of the mounting surface of the main casing 1, and a lower gasket fixed in a four-sided frame shape on the upper part of the frame 3F. 31 and an upper gasket 32 which is fixed in a four-sided frame shape to the inner surface of the opening / closing lid frame of the opening / closing mechanism 2 and can come into contact with the lower gasket. With the open / close lid frame of the open / close mechanism 2 closed, the upper and lower gaskets 31 and 32 come into contact with each other, and the sealed space 30 is substantially sealed.

The decompression mechanism includes a suction pump (not shown) housed in the main body casing 1, a locking pin 5 that is communicated with a suction pipe extending from the suction pump and protrudes from the bottom of the sealed space 30, It comprises a pin hole 5H provided in the stop pin 5. The suction pump is operated by a switch 2S provided outside the frame of the opening / closing mechanism 2, and automatically stops when the inside of the sealed space 30 is in a predetermined reduced pressure state. The automatic stop may be one that detects that the suction pressure of the suction pipe has reached the threshold value on the suction pump side, or may be one that stops by a preset timer.

(Sealing mechanism 4)
The seal mechanism 4 only needs to be separated or contacted by opening / closing of the opening / closing mechanism. For example, a lower seal mechanism 41 and an upper seal mechanism 42 are respectively provided at corresponding positions of the sealed space 30 and the opening / closing mechanism 2 so as to be able to come into contact with each other. Of these, the lower seal mechanism 41 is composed of a rectangular bar fixed on the mounting surface at the same height as or slightly lower than the lower gasket 31 of the decompression unit 3, and the electrothermal tape 4T is provided at the center of the upper surface. Is embedded so as to be exposed. The upper seal mechanism 42 has a contact surface that contacts the lower seal mechanism by the opening / closing mechanism 2. The electrothermal tape 4T can be energized only when they are in contact with each other. Further, the electrothermal tape 4T is operated when the suction pump is stopped.
As in Examples 8 and 9 to be described later, either the upper seal mechanism 42 or the lower seal mechanism 41 is formed on either the opening / closing mechanism lower surface or the main body casing upper surface as a heating element formed with ridges in the width direction. A part of the lower surface of the opening / closing mechanism may be opposed to the main casing upper surface mala as a seal mechanism receiving portion by closing the mechanism.

(Locking pin 5)
A plurality of locking pins 5 are formed in a projecting manner in the sealed space 30 and are respectively locked in the pin holes of the bag mouth accommodated in the room. In the embodiment, it is fixed to the bottom surface inside the sealed space on the main body casing 1 side with a supporting strength sufficient to support the packaging bag containing the contents. Each of the locking pins 5 is internally connected to a suction pump for decompressing the interior of the chamber, and has a decompression suction pin hole 5H formed in the protruding side surface or top surface. In the set state in which the locking holes of the packaging bag are locked to the corresponding locking pins 5 respectively, the inside of the packaging bag and the sealed space 30 in the sealed state are decompressed from the pin holes 5H, and the packaging bag is opened. To deaeration or gas filling state S2.
The outer peripheral portion of at least one of the locking pins is formed to be offset from the hole edge of the locking hole of the packaging bag toward the center of the hole, whereby the locking pin 5 is locked to the packaging bag. A gap G is formed between the side portion between the adjacent locking pins 5 and the locking hole PH edge (front pin hole edge PH1, back pin hole edge PH2) in the set state locked to the hole.

  In the first embodiment, as shown in FIG. 7, a substantially L-shaped depression 5D is curved from left to right from the top surface 5T, which is at least a part of the pin side surface of each locking pin, to both sides thereof. Thus, with the locking pin 5 locked in the locking hole of the packaging bag, the portion of the locking pin 5 formed obliquely and the locking hole PH edge (front pin hole edge PH1, back pin hole edge A gap G is formed between PH2). Along the curved portion of the hollow surface of the hollow portion 5D, a pin hole 5H is formed upward (in the pin protruding direction), and the lip of the pin hole 5H is curved and formed obliquely with respect to the bottom of the chamber. The For this reason, the suction hole can be reliably secured without the pin hole 5H being blocked by the bag surface of the packaging bag.

  Further, the locking hole PH of the packaging bag is formed in advance with a diameter larger than the pin diameter of the locking pin 5, and the outer distance 5OW (FIG. 2) between the adjacent locking pins 5 is the relationship between adjacent packaging bags. It is set smaller than the outer distance between the stop holes PH. As a result, a gap G is always generated between the locking hole PH edge (front pin hole edge PH1, back pin hole edge PH2) and the locking pin 5 in the locked state to the locking pin 5. (FIG. 7). In the embodiment, the inner distance 5IW (FIG. 2) between the adjacent locking pins 5 is set to be larger than the inner distance between the adjacent locking holes PH of the packaging bag. Thereby, wrinkles are generated in the packaging bag body at the bag mouth portion in a state of being locked to the plurality of locking pins 5, and a gap is generated. The gap G can be formed even if it is set so as to satisfy any of these conditions.

(Bag holding mechanism 6)
The bag holding mechanism 6 includes a half-open frame-like cover that encloses a part of the mounting surface of the main casing 1, and is on the opposite side of the mounting surface of the main casing 1 from the one end provided with the opening / closing mechanism 2. The cover hinge 6S is attached to the other end. An arc column-shaped stop projection 6S for maintaining the open state is fixedly provided at the center lower portion of the bag holding mechanism 6 in the width direction. When the bag holding mechanism 6 is opened, the stop protrusion 6S comes into contact with one side surface of the main casing 1 so that the bag holding mechanism 6 maintains an open state at a predetermined opening angle (see FIG. 4).

(Pin hole 5H)
A plurality of pin holes 5H of each locking pin are provided on the protruding side surface of the locking pin 5 and at different circumferential positions around the pin.

(Landscape use)
The main body casing can be used in a floor-mounted state with the mounting surface lying in the horizontal direction with the mounting surface normal facing upward and the opening / closing mechanism on the side. . In the embodiment, it is possible to arrange the back surface of the main body casing 1 opposite to the placement surface along the floor surface.

(Portrait use)
In addition to using the main body casing in the horizontal direction, the mounting surface normal is facing forward, and the opening / closing mechanism is at the top so that the mounting surface is in the vertical direction with the mounting surface in the vertical direction. It can be done. In the embodiment, the rear surface of the main body casing 1 on the side opposite to the placement surface can be placed along the wall surface and hung on the wall surface by a hanging tool (not shown). In addition, the main body casing side surface and the cover side surface on the lower side of the mounting surface may be configured to be flat or provided with legs so as to be able to stand upright in a vertically placed state. In any vertical use, the lower receiving portion 6 can be used in a vertical position. The plurality of locking pins are fixed with a supporting strength to suspend the packaging bag, and protrude forward or upward to suspend the packaging bag. Can do. Moreover, it can be set as the locked state by which a packaging bag does not fall easily from a latching pin by closing a sealed space.

(First sealing method for packaging bags)
In the first sealing method of the packaging bag shown in FIG. 5, a packaging bag P in which a plurality of locking holes for locking and holding the bag itself is provided at the bag mouth portion is used as a sealing object. And, by any one of the above-mentioned sealing devices, the inside of the bag of the packaging bag P containing the contents is degassed or gas-filled, and the bag mouth is sealed in a degassed or gas-filled state. Each process is comprised.
Each locking hole PH of the bag mouth of the packaging bag P containing the contents is locked to each locking pin 5 in the sealed space 30 in the opened state, and the opening / closing mechanism 2 is closed so that the sealed space is sealed. And a setting step in which a lower part than the lower edge of the locking hole of the packaging bag is sandwiched by a sealing mechanism,
A pressure reducing step of sucking air in the sealed space after the setting step from the pin hole and reducing the pressure in the packaging bag and the sealed space until a predetermined indoor pressure is reached;
・ When the pressure in the packaging bag and in the sealed space has reached a predetermined indoor pressure, the seal mechanism is activated, and the sealing mechanism below the lower edge of the locking hole of the packaging bag in the setting step. Sealing process to heat and seal the part sandwiched between.
The predetermined sealing device used in this sealing method is at least
・ It has a sealed space with a width larger than the width of the mouth of the bag opening, and the bag mouth of the packaging bag is accommodated and sealed in this sealed space from a specific side when viewed from the center of the sealed space. A sealed space 30 to be obtained;
An opening / closing mechanism 2 that opens and closes the sealed space by opening and closing;
A lower seal mechanism 41 and an upper seal mechanism 42 that are provided at corresponding positions in the specific one side direction of the sealed space 30 and the opening / closing mechanism 2 and that are separated or contacted by opening / closing of the opening / closing mechanism;
A plurality of protrusions are formed protruding from the bottom of the chamber near the center in the width direction in the sealed space 30 and are respectively engaged with the pin holes of the bag mouth accommodated in the room, and are in communication with the suction pump for depressurizing the room. Pin 5 and
A pin hole 5H for decompression suction that is formed in the protruding side surface or top surface of each locking pin 5 and communicates with the suction pump in the locking pin 5;
It is equipped with.

(Packaging bag)
In the packaging bag, a plurality of locking holes PH are provided in the vicinity of the bag mouth so as to be spaced apart from each other in the mouth width direction, and have a strength sufficient to be suspended by the pin hole H in a state where the contents are accommodated. Further, the bag sheet constituting the packaging bag has fine protrusions formed by embossing or embossing on the entire inner surface including the periphery of the pin hole, and this fine protrusion allows the air flow path in the bag to be reduced during suction. In addition, air accumulation in the bag is less likely to occur after vacuum suction.

The packaging bag of the embodiment shown in FIGS. 5 and 12 is provided with two locking holes PH spaced apart in parallel in the vicinity of the bag mouth end of each of the front sheet and the back sheet overlapped with each other. This locking hole PH is larger in diameter than the locking pin 5, and as shown in FIG. 5a and FIG. 7, the corresponding locking pin 5 is inserted into each of the two locking holes PH, and the packaging bag is inserted. In the suspended state, a gap is formed around the locking pin 5. The pin holes 5H provided on both sides of each locking pin 5 communicate with the packaging bag through this gap, and this gap allows filling of the packaging bag and removal of the packaging bag. Gas or gas filling is performed smoothly.
As shown in FIG. 5b, the packaging bag after sealing by the first sealing method is sealed with a line-shaped welded part PW over the entire width direction below the locking hole PH, and the welded part PW. The following packaging parts are depressurized to a vacuum or a substantially vacuum state.

(Second sealing method for packaging bags)
The second sealing method of the packaging bag shown in FIG. 6 is a state in which the inside of the packaging bag P containing the contents is degassed or gas-filled by a predetermined sealing device and degassed or gas-filled. The bag mouth is sealed and includes the following steps.
The mouth end of the bag mouth of the packaging bag P containing the contents was pressed against the side of the sealed space near the top of the lower seal mechanism 41 in the open state and pressed. A primary sealing step of sandwiching the vicinity of the lower portion of the mouth end portion by the lower seal mechanism 41 and the upper seal mechanism 42 and operating the seal mechanism to perform primary heating and sealing,
-Each locking hole of the packaging bag P after the first heat sealing is locked to each locking pin 5 in the sealed space 30 to close the opening and closing mechanism so that the sealed space is sealed, A setting process in which the lower part of the lower end of the locking hole is sandwiched by a sealing mechanism;
A pressure reducing step of sucking air in the sealed space after the setting step from the pin hole and reducing the pressure in the packaging bag and the sealed space until a predetermined indoor pressure is reached;
・ When the pressure in the packaging bag and in the sealed space has reached a predetermined indoor pressure, the seal mechanism is activated, and the sealing mechanism below the lower edge of the locking hole of the packaging bag in the setting step. A secondary sealing process in which the portion sandwiched between the layers is sealed by secondary heating.

The packaging bag after sealing by the second sealing method, as shown in FIG. 6b, is sealed with a line-shaped welded portion PW over the entire width direction of the lower portion and the upper portion of the locking hole PH, And the packaging part below the welding part PW is pressure-reduced to a vacuum or a substantially vacuum state.
According to the above method, the bag mouth is locked at a plurality of positions near the center with a plurality of locking pins, and the inside of the packaging bag is directly sucked from the locking portion, so that the bag can be sealed first. Or it will be in a gas filling state, and then the inside of a room will be in a constant decompression state or gas filling state. For this reason, the inside of the bag can be efficiently degassed or filled with gas, and the degassing or gas filling time until the sealing mechanism is activated can be shortened, or the degassing mechanism or the gas supply mechanism can be made relatively small. it can. In addition, since the suction part is provided at a position overlapping the bag mouth accommodated in the sealed space, there is no need to secure a space for storing the suction part on the side of the sealed space, and the sealed space is formed relatively compact. The By miniaturizing and accommodating the vacuum pump and making the sealed space relatively compact, the entire device can be made relatively compact.

(Locking pin 5 of Example 2)
The locking pin 5 of the second embodiment shown in FIG. 8 is formed with a reduced diameter so that the side surface of the pin itself is inclined and tapered, and both side portions are cut from the circular base portion toward the front side. It becomes a partial circular cross section and protrudes to a substantially oval top surface 5T. Further, a recess 5D made of an inclined surface is formed on the side portion, and a pin hole 5H is formed in the recess 5D. A plurality of protrusions are formed in the sealed space 30 so as to be engaged with the pin holes of the bag mouth accommodated in the room. Both side portions of the outer peripheral portion of the locking pin are offset so as to be shifted toward the hole center side from the hole edge of the locking hole of the packaging bag, whereby the locking pin 5 is locked to the packaging bag. A gap G is formed between the side portion between the adjacent locking pins 5 and the locking hole PH edge (front pin hole edge PH1, back pin hole edge PH2) in the set state locked to the hole.

(Locking pin 5 of Example 3)
The locking pin 5 of the third embodiment shown in FIG. 9 is formed to have a reduced diameter so that the side surface of the pin itself is inclined and tapered, and the protruding shaft itself of the pin is inclined one side upward to be locked. Has a retaining function. A cylindrical suction space is provided inside the pin, and a plurality of cylindrical pin holes 5H are formed from the side surfaces of the suction space. The side portion on the lower side of the outer peripheral portion of the locking pin is offset by a single slope so as to be shifted toward the hole center side from the hole edge of the locking hole of the packaging bag. Gap between the side portions between the adjacent locking pins 5 and the locking hole PH edge (front pin hole edge PH1, back pin hole edge PH2) in the set state where is locked in the locking hole of the packaging bag. Is formed.

(Locking pin 5 of Examples 4 to 7)
The locking pins 5 of Examples 4 to 7 shown in FIG. 10 each have a pin hole 5H formed in a circular plate-like protruding piece 5P (a), and are cut by opposing inclined surfaces having a substantially V-shaped cross section. The pin hole 5H is formed by the notch (b), the locking pin itself is inclined to one side (from the end of the mounting surface) and fixed by the triangular plate-like rib 5R (c), and the head is spherical In this case, a plurality of flat rectangular pin holes 5H are formed around the lower half of the spherical autopsy part (d). These have a function of forming a gap G as well as a holding function.

(Function and effect)
According to the sealing device or the sealing method of the present invention, the locking pins 5 and the locking holes are in the set state before the plurality of locking pins 5 are locked to the locking holes of the packaging bag and suction is started. A gap G is formed between the PH edge (front pin hole edge PH1, back pin hole edge PH2), and the pin hole 5H is sucked from the vicinity of the gap G. In the locked state, the locking hole PH and the locking pin 5 are not completely in close contact with each other, and a gap G is formed between them so as to ensure that the suction air flow volume is relatively large. The suction efficiency can be further increased.

In particular, since the pin hole 5H is provided in the locking pin, and the gap G is formed around the locking pin in the set state of the packaging bag, the locking pin is sucked from substantially the entire circumferential direction. By sucking from the substantially entire circumferential direction of each of the plurality of locking pins provided near the center of the sealed space, it is possible to increase the height from the inside of the accommodated and locked bag to the pin hole 5H and from the sealed space to the pin hole 5H simultaneously. It can be sucked with efficiency.

Further, in the present invention, the inside of the packaging bag and the sealed space 30 are decompressed or filled with gas from the pin hole of the packaging bag P locked to the locking pin and the bag mouth accommodated in the room through the pin hole 5H. And when it comes to a predetermined pressure reduction state, the sealing mechanism 4 which contacted across the lower part of the bag mouth act | operates, and the packaging bag is sealed, It is characterized by the above-mentioned. As a result, the bag mouth is locked at a plurality of positions near the center with a plurality of locking pins, and the inside of the bag is directly sucked or filled with gas from this locking portion, so the bag is efficiently degassed or gas filled. It is possible to shorten the degassing or gas filling time until the sealing mechanism is activated, and to relatively downsize the degassing or gas filling mechanism (vacuum pump, gas supply pump). In addition, since the suction part is provided at a position overlapping the bag mouth accommodated in the sealed space, there is no need to secure a space for storing the suction part on the side of the sealed space, and the sealed space is formed relatively compact. The By miniaturizing and accommodating the vacuum pump and making the sealed space relatively compact, the entire device can be made relatively compact.

Here, in the set state before the plurality of locking pins 5 are locked in the locking holes of the packaging bag and the suction is started, the locking pins 5 and the locking hole PH edge (front pin hole edge PH1, back pin hole) A gap G is formed between the pin hole 5H and the edge PH2), and the pin hole 5H is preferably sucked from the vicinity of the gap G. In the locked state, the locking hole PH and the locking pin 5 do not completely adhere to each other, and a gap G is formed between them, so that the inside of the bag that is housed and locked to the pin hole 5H, and The flow volume of the suction air flow from the sealed space to the pin hole 5H can both be ensured to be relatively large, and the suction efficiency can be further increased.
Further, the gap G for the suction channel can be reliably secured by the pin structure, and the suction efficiency can be further increased. For example, as shown in FIG. 10 (b), a recessed hole is formed by a notch, thereby forming an oblique side surface portion, and as shown in FIG. By doing so, the side portion may be formed.

(Example 8)
The sealing device of Example 8 shown in FIGS. 13a, 13b, and 14 is provided with a gas supply mechanism by replacing the cylinder in the sealing device. Specifically, the sealed space (30) of Example 8 includes the first space (30A) that can accommodate and seal a part of the bag mouth of the packaging bag (P), and the remaining bag mouth of the packaging bag (P). And a second space (30B) capable of accommodating and sealing a part thereof. Further, one locking pin (5) is formed to protrude from the upper surface of the casing body 1 in the first space (30A) and the second space (30B).
The locking pin (5) provided in the first space (30A) communicates internally with a suction mechanism (P) for depressurizing the interior of the chamber, and has a vacuum suction pin on the side surface or top surface of the pin tip. A hole (5H) is formed. The locking pin (5) provided in the second space (30B) communicates internally with a gas supply mechanism (7) for pressurizing the interior with a filling gas, and at the side or top of the pin tip. A pin hole (5H) for vacuum suction is formed on the surface.
And a suction process is performed from the pin hole (5H) of the locking pin (5) in the first space (30A), and the gas from the pin hole (5H) of the locking pin (5) in the second space (30B). A filling step can be performed. The suction process and the gas filling process can be set to start simultaneously or continuously, or can be set to perform only one of them.
A vacuum pump VP, a circuit board E, a power supply unit PM, a gas supply tank T, a check valve CV, a regulator 7, and a cylinder housing space 7S are provided in the main casing 1 as a vacuum suction mechanism. Further, in the main body casing 1, the gas filling port portion of the gas supply tank T and the flow path tip side of the check valve CV are connected in communication by the first hose H 1, and the tank port portion S of the gas supply tank T and the The pin hole of the second locking pin 5B is connected in communication with the second hose H2, and the pin hole of the vacuum pump VP and the first locking pin 5A is connected in communication with the third hose H3. A power cord C is connected to the power unit PM, and the power cord C extends to the outside of the main casing 1. The check valve CV communicates with the regulator 7 on the upstream side in the flow direction and communicates with the gas supply tank T on the downstream side in the flow direction.
Further, the seal mechanism 4 of the present embodiment is formed so that the lower surface of the lid of the opening / closing mechanism serves as a seal mechanism receiving portion instead of the upper seal mechanism of the first embodiment, and the seal mechanism receiving portion projects from the upper surface of the casing body 1. When the lower seal mechanism 41 abuts, the boron bag is sandwiched.

In addition, the two sealed spaces including the first and second sealed spaces in the present configuration are set in a state of being communicated with each other in a state of being partitioned together. One of the sealed spaces communicates with the gas supply mechanism, and the other communicates with the decompression mechanism. And either gas filling or pressure reduction is performed from the pin hole of the locking pin provided in each sealed space. This gas filling or decompression may be performed simultaneously, may be performed sequentially at different times, or only one or the other may be performed independently. In the above embodiment, the first sealed space and the second sealed space communicate with each of the gas supply mechanism and the decompression mechanism. However, all of the gas supply mechanism and the decompression mechanism are the same in a plurality of sealed spaces. It may be communicated with. As another embodiment, each sealed space may be communicated with each of a gas supply mechanism and a decompression mechanism in a switchable manner. For example, when the first sealed space and the gas supply mechanism are in communication with each other, the second sealed space and the pressure reducing mechanism are in communication with each other. For example, when the second sealed space and the gas supply mechanism are in communication with each other by switching. The first sealed space and the pressure reducing mechanism may be in communication. The gas supply mechanism and the pressure reducing mechanism are operated for a preset time by the switch operation, and are stopped in a state where the sealed space is at a predetermined pressure. In the gas supply mechanism of the embodiment, the filling gas is supplied from the variable volume pressurized tank by opening the solenoid valve, and when the volume of the pressurized tank falls below a predetermined value, the gas is automatically supplied by the contact of the switch plate. The supply is stopped.
In the setting where the suction process and the gas filling process are started simultaneously or continuously with a predetermined time difference, the internal air of the packaging bag can be quickly replaced with a predetermined filling gas. In this gas replacement setting operation, a single gas filling time in which only the gas filling process is performed after the suction process is completed is ensured, and reliable gas filling is ensured.

In actual operation, when the predetermined time has elapsed from the start of the suction process or gas filling process and the air inside the packaging bag is in a predetermined degassing state or a predetermined gas filling state, the lower part of the bag mouth is pinched. The sealing mechanism (4) contacted in (4) is activated to seal the packaging bag (P) (sealing step).

The gas supply mechanism (7) of the present embodiment has an openable gas cylinder accommodating space 7S provided at the side of the main casing 1 as shown in FIGS. 13 and 14A, 14B and 14C. And a regulator 7 which is built in the upper part of the accommodation space 7S and can be turned around the axis by a quarter turn, a check valve CV connected to the regulator 7 inside the main body casing 1, and a pipe from the check valve CV. And a gas supply tank T installed in the main body casing 1. The storage space 7S in the opened state is opened and closed by an opening / closing lid 17 on the lower side of the main body casing 1, and can accommodate a gas cylinder connected to the regulator.

One end surface of the regulator 7 is provided with a screw-type connection port 7C to the gas cylinder B, and the connection port faces outward from the main casing 1 or downward in the accommodation space 7S depending on the rotation state of the regulator. As shown in FIG. 13a, the screw part of the cylinder port of the gas cylinder B is screwed into the connection port 7C directed to the side, the regulator 7 is rotated together with the connected gas cylinder B, and the gas cylinder as shown in FIG. 13b. The open / close lid 17 is closed in a state where B is accommodated.
The gas supply tank T has two left and right connection ports, and each connection port is connected to a gas supply pin hole (5H) and a check valve CV via a first hose and a second hose, respectively. . The lower end of the connection port to the second hose H2 is a tank port portion (S) configured in a cylindrical shape inside the tank, and the filling gas in the tank volume is supplied into the sealed space from the tank port portion S. .

In the gas supply tank (T), a filling port portion for filling the filling gas from the gas cylinder B is provided, and this filling port portion communicates with the check valve CV via the first hose.
Further, the gas supply tank T accommodates a movable switch plate (P) provided by partitioning the inside of the tank, and the tank volume is partitioned by the switch plate P.
The switch plate (P) moves so as to vary the partition position in the tank according to the increase or decrease of the pressure in the tank, thereby varying the tank volume of the gas supply tank (T). In the initial state in which a gas cylinder containing a filling gas is connected and accommodates the gas cylinder, the filling gas is naturally filled into the gas supply tank from the gas cylinder, so that the switch plate P moves to the bottom and fills the largest tank volume. It will be in the standby state which hold | maintained gas (FIG. 14a).

By the way, the tank opening of the gas supply tank T and the internal hole of the second locking pin 5B are communicated with each other via a second hose H2 and a solenoid valve (not shown). The gas supply tank T and the second locking pin 5B are always shut off by a solenoid valve. When the filling gas filling start switch is actuated, the solenoid valve is actuated and released. The second locking pin 5B is in communication. By being in the communicating state, the filling gas supply from the gas supply tank T to the second pin hole (5H) is started via the second hose H2 (FIG. 14b).

When the filling gas is supplied from the second hose H2, the second locking pin 5B and the gas supply tank T to the filling gas supply pin hole (5H), the switch plate (P) is connected to the tank port together with this gas supply. It gradually moves closer to the part (S) (FIG. 14b). At this time, the tank volume of the gas tank is automatically varied by the movement of the switch plate (P) itself according to the pressure in the tank.

The switch plate (P) that has moved close to the uppermost position is pressed against the tank port (S) and closes the tank port (S) when the charged gas in the tank is below the critical amount. Thus, the gas supply is automatically stopped (FIG. 14c). After the gas supply, the pressure in the tank does not increase until the gas is newly filled in the tank, so that the automatic stop state in pressure contact with the tank port (S) is maintained. Further, this automatic stop state is automatically released when the switch plate moves downward in the tank by gas filling from the gas cylinder B, and again enters a standby state (FIG. 14a) in which the tank is filled with gas.
Other configurations and sealing methods not specifically mentioned in the present invention are the same as those in the first embodiment.

(Sealing method of the present invention)
And as a third sealing method of the present invention,
A packaging bag P in which a plurality of locking holes PH for locking and holding the bag itself is provided at the bag mouth portion is a sealing object, and the bag of the packaging bag P containing the contents by a predetermined sealing device A sealing method in which the bag mouth is sealed in a state where the inside is degassed or filled with gas and degassed or filled with gas,
The sealing mechanism 4 has a sandwiching structure composed of either an upper seal mechanism 41 or a lower seal mechanism 42 that sandwiches the bag mouth portion of the packaging bag from above and below in accordance with the closing operation of the opening / closing mechanism, and a seal mechanism receiving portion. And
The mouth end of the bag mouth of the packaging bag P containing the contents was pressed against the side of the sealed space near the top of the lower seal mechanism 41 in the open state and pressed. A primary sealing step of sandwiching the vicinity of the lower end of the mouth end portion by the sandwiching structure of the seal mechanism 4 and operating the seal mechanism to perform primary heating and sealing,
-Each locking hole of the packaging bag P after the first heat sealing is locked to each locking pin 5 in the sealed space 30 to close the opening and closing mechanism so that the sealed space is sealed, A setting step in which a lower part than the lower edge of the locking hole is sandwiched by the seal mechanism 4;
・ Air in the sealed space after the setting process is sucked from the pin hole, or a filling gas is supplied into the sealed space after the setting process, and the inside of the packaging bag and the sealed space is depressurized until a predetermined pressure reduction or gas filling state is reached. Or a decompression / gas filling step for filling with gas;
・ When the inside of the packaging bag and the inside of the sealed space are in a predetermined state in the decompression / gas filling process, the seal mechanism is activated, and the lower part of the lower edge of the locking hole of the packaging bag is set in the setting process. A secondary sealing step of secondary heating and sealing a portion sandwiched between the sealing mechanisms.

  By the above process, as shown in FIG. 6 or FIG. 12, first, the vicinity of the mouth end portion ahead of the locking hole edge is first sealed, and the packaging bag is simply sealed to the unsealed state in advance. Will be kept. Next, the inside of the packaging bag or the sealed space is decompressed or filled with gas from the pin hole 5H provided in the locking pin, and then the lower position closer to the bottom side than the pin hole edge is secondarily sealed and sealed. As a result, a two-step sealing process such as sealing after simple sealing will be provided, and the secondary end will be easily locked to the locking pin by aligning the bag mouth end first by primary sealing. Setting work for sealing becomes extremely easy. Moreover, since the temporary sealing state is simple sealing, the contents are not easily spilled. Furthermore, since the mouth end is closed by temporary sealing, the inside of the packaging bag can be efficiently decompressed or gas filled. By these, when sealing and sealing a large number of packaging bags, the sealing and sealing process can be continuously performed by collectively performing each process in a number of packaging bag groups.

Example 9
15 includes a first magnetic body M1 and a second magnetic body M2 respectively corresponding to the facing surfaces of the main casing 1 and the opening / closing mechanism 2 in addition to the configuration of the eighth embodiment. Two sets of magnetic materials are accommodated. In the present embodiment, the main body casing 1 incorporates a first magnetic body M1 made of a pole-switching electromagnet that is magnetized by a direct current, and the end surface of the columnar soft magnetic body constituting the first magnetic body M1 is the casing. 1 It arrange | positions so that it may be exposed to the upper surface. A second magnetic body M2 made of a permanent magnetic body is built in the lid frame of the opening / closing mechanism 2, and the end surface of the second magnetic body M2 is exposed so as to face a predetermined magnetic pole on the lower surface of the lid frame. The second magnetic body M2 is disposed opposite to the exposed position of the first magnetic body M1 in the closed state.

In this embodiment, the lid frame of the open / close structure is hinged by opening a predetermined space with the upper surface of the main body casing 1, and a predetermined clamping space is secured between the lower surface of the lid frame and the upper surface of the main body casing 1. It is assumed that the bag mouth is sandwiched between the two. When the lid frame is closed, the lower gasket fixed to the upper surface of the main body casing 1 comes into contact with the lower surface of the lid frame to form a sealed space divided into two on the left and right.

Also, in this embodiment, the lid frame can be lowered halfway without passing an electric current through the first magnetic body, and the bag mouth can be put into a temporary set state. In this temporary set state, the soft magnetic body of the first magnetic body M1 is Since it is weakly attracted to the second magnetic body M2 and temporarily held while the bag mouth is sandwiched with a relatively weak force, the temporary holding position of the packaging bag can be adjusted. At this time, the lower gasket is not completely adhered to the lower surface of the lid frame, and a sealed space is not secured.
By flowing a current of a predetermined pole from the temporary set state to the first magnetic body, the magnetic body sets are electromagnetically attracted to move the lid frame closer to the main body casing 1 side, and the bag mouth is sandwiched with a predetermined clamping force. This set state is assumed. At this time, the lower gasket is completely brought into close contact with the lower surface of the lid frame to secure a sealed space. In this set state, either degassing or filling gas supply is performed from each pin hole 5H, and the inside of the packaging bag communicating with the sealed space is degassed or gas filled. When a predetermined time set in advance elapses from the start of degassing or gas filling, the sealing mechanism 4 is energized to start heating the sealing mechanism, and the bag mouth is sealed.
When a predetermined time elapses from the start of energization of the sealing mechanism 4, the sealing heat of the bag mouth is radiated and the sealing is completed. After the elapse of this predetermined time, a current opposite to the set state flows in the first magnetic body M1, the first magnetic body M1 repels the second magnetic body, pushes up the lid frame, and automatically opens the lid. And
The bag holding mechanism 6 according to the ninth embodiment has an accommodation opening 6H whose upper part is opened by an opening frame made of a four-sided frame, and is attached so as to face the upper surface of the casing body 1. Attachment is made up of a pin and pin hole locking mechanism, which can be removed as necessary and replaced with a bag holding mechanism of the storage port 6H having a different volume.
Other configurations and sealing methods not specifically mentioned in the present invention are the same as those in the first embodiment.

(Sealing method of the present invention)
And as the fourth sealing method of the present invention,
A packaging bag P in which a plurality of locking holes PH for locking and holding the bag itself is provided at the bag mouth portion is set as an object to be sealed, and the packaging bag P containing contents by the sealing device of Example 9 A sealing method of sealing the bag mouth in a state where the inside of the bag is degassed or gas-filled and degassed or gas-filled,
-Each locking hole of the bag mouth of the packaging bag P containing the contents is locked to the corresponding locking pin 5, and the opening / closing mechanism 2 is closed to a state in the middle of opening and closing with the bag mouth being sandwiched, and is partitioned from each other Temporary set that adjusts the set position of the packaging bag by connecting a plurality of sealed spaces to the packaging bag and setting the packaging bag in a temporary set state in which the magnetic body set is pressed with a predetermined first pressing force only by the attractive magnetic force of the permanent magnet. Process,
-Enlarge the attractive magnetic force of the magnetic body set and close the open / close mechanism 2 to the closed state by the attractive magnetic force of the permanent magnet and the electromagnet to close the sealed space, and below the lower edge of the locking hole of the packaging bag A setting step for sandwiching the two parts with a sealing mechanism;
・ Air in the sealed space after the setting process is sucked from the pin hole, or a filling gas is supplied into the sealed space after the setting process, and the inside of the packaging bag and the sealed space is depressurized until a predetermined pressure reduction or gas filling state is reached. Or a decompression / gas filling step for filling with gas;
・ When the inside of the packaging bag and the sealed space are in a predetermined state in the decompression / gas filling process, the sealing mechanism is operated for a predetermined time, and from the lower edge of the locking hole of the packaging bag in the setting process. A sealing process in which the portion sandwiched between the lower sealing mechanisms is sealed by secondary heating,
A lid opening step in which the opening and closing mechanism 2 is opened by switching the magnetic force of the magnetic body set from the attractive magnetic force to the repulsive magnetic force when a predetermined time has elapsed after the end of the operation time of the sealing mechanism by the sealing step;
In order.

  In addition, the above invention can extract each component, omit or replace some components, and combine the components of each embodiment. For example, a plurality of sealed spaces partitioned in the width direction without having a locking pin can be formed by an opening / closing mechanism, and a deaeration or gas filling communication hole provided in the sealed space is provided instead of the locking pin It can also be By selecting either the suction process or the gas filling process from each of the sealed spaces divided into a plurality, it is possible to efficiently change the state in the packaging bag communicated through the bag mouth in the sealed space. it can. For example, by performing the suction process in one enclosed space and performing the gas filling process in another sealed space, the gas replacement state can be quickly achieved. In addition, the suction process is performed continuously or simultaneously in all the enclosed spaces, or the gas filling process is performed continuously or simultaneously in all the sealed spaces, so that the degassing state or gas filling state can be quickly achieved. Can do.

PH pin hole P Packaging bag 30 Sealed space 2 Opening / closing mechanism 4 Seal mechanism 41 Lower seal mechanism 42 Upper seal mechanism 5 Locking pin 5H Pin hole PH Locking hole G Gap

Claims (7)

A sealing device for sealing a bag mouth of a packaging bag provided with a plurality of locking holes for locking in a bag mouth portion, at least,
Provided with a sealed space with a room width equal to or larger than the mouth width of the bag mouth of the packaging bag, and in this sealed space, at least a part of the bag mouth of the packaging bag can be accommodated and sealed from a specific side as seen from the sealed space. A sealed chamber;
An opening and closing mechanism for opening and closing the sealed space of the sealed chamber;
Each of the sealed chamber and the opening / closing mechanism is provided at a corresponding position closer to the specific one side direction as viewed from the sealed space, and a bag mouth is introduced according to opening / closing of the opening / closing mechanism, or the bag mouth is sandwiched and heated and sealed. A sealing mechanism to wear;
One or a plurality of protruding protrusions are formed in the sealed space of the sealed chamber, and each includes a locking pin that locks into a locking hole of the bag mouth of the packaging bag that is hermetically accommodated in the sealed chamber,
At least one of the locking pins is in internal communication with a suction mechanism for decompressing and sucking the inside of the packaging bag hermetically accommodated in the sealed chamber, and a decompression suction pin hole is formed in the protruding side surface or top surface. Formed,
In the set state in which the locking holes of the packaging bag are locked to the corresponding locking pins, a gap is formed between the locking pin and the locking hole edge,
The pin hole, from the gap formed between the locking pin and the locking hole edge, depressurizes the sealed bag and the packaging bag that is in air communication with the sealed chamber,
A sealing device for a packaging bag, wherein a sealing mechanism that is in contact with the lower part of the bag mouth is actuated to seal the packaging bag when a predetermined reduced pressure state is reached. A sealing device for sealing a bag mouth of a packaging bag provided with a plurality of locking holes for locking in a bag mouth portion, at least,
Provided with a sealed space with a room width equal to or larger than the mouth width of the bag mouth of the packaging bag, and in this sealed space, at least a part of the bag mouth of the packaging bag can be accommodated and sealed from a specific side as seen from the sealed space. A sealed chamber;
An opening and closing mechanism for opening and closing the sealed space of the sealed chamber;
Each of the sealed chamber and the opening / closing mechanism is provided at a corresponding position closer to the specific one side direction as viewed from the sealed space, and a bag mouth is introduced according to opening / closing of the opening / closing mechanism, or the bag mouth is sandwiched and heated and sealed. A sealing mechanism to wear;
One or a plurality of protruding protrusions are formed in the sealed space of the sealed chamber, and each includes a locking pin that locks into a locking hole of the bag mouth of the packaging bag that is hermetically accommodated in the sealed chamber,
At least one of the locking pins is in internal communication with a gas supply mechanism that fills a packing bag hermetically contained in a hermetically sealed chamber and supplies a filling gas into the protruding side surface or top surface. A pin hole is formed,
In the set state in which the locking holes of the packaging bag are locked to the corresponding locking pins, a gap is formed between the locking pin and the locking hole edge,
The pin hole is filled with a filling gas from a gap formed between the locking pin and the edge of the locking hole into a sealed bag in a sealed state and a packaging bag that is in air communication with the sealed chamber,
A packaging bag sealing device characterized in that when a gas filling state in which a predetermined gas supply amount is supplied is reached, a sealing mechanism that is in contact with the lower part of the bag mouth is operated to seal the packaging bag. . A sealing device for sealing a bag mouth of a packaging bag provided with a plurality of locking holes for locking in a bag mouth portion, at least,
Provided with a sealed space with a room width equal to or larger than the mouth width of the bag mouth of the packaging bag, and in this sealed space, at least a part of the bag mouth of the packaging bag can be accommodated and sealed from a specific side as seen from the sealed space. A sealed chamber;
An opening and closing mechanism for opening and closing the sealed space of the sealed chamber;
Each of the sealed chamber and the opening / closing mechanism is provided at a corresponding position closer to the specific one side direction as viewed from the sealed space, and a bag mouth is introduced according to opening / closing of the opening / closing mechanism, or the bag mouth is sandwiched and heated and sealed. A sealing mechanism to wear;
One or a plurality of protruding protrusions are formed in the sealed space of the sealed chamber, and each includes a locking pin that locks into a locking hole of the bag mouth of the packaging bag that is hermetically accommodated in the sealed chamber,
The sealed space is divided into a first sealed space that can accommodate and seal a part of the bag mouth of the packaging bag, and a second sealed space that can accommodate and seal the remaining part of the bag mouth of the packaging bag. ,
The locking pin is formed to protrude one or more in each of the first sealed space and the second sealed space,
The locking pin provided in the first sealed space has an internal communication with a suction mechanism for reducing the pressure inside the chamber, and a pin hole for vacuum suction is formed on the side surface or top surface of the pin tip.
The locking pin provided in the second sealed space communicates internally with a gas supply mechanism that pressurizes the interior with a filling gas, and a pin hole for vacuum suction is formed on the side surface or top surface of the pin tip. Being
The suction process from the pin hole of the locking pin in the first sealed space and the gas filling process from the pin hole of the locking pin in the second sealed space are started simultaneously or continuously, and the inside Sealing of a packaging bag, wherein a sealing mechanism that is in contact with the lower part of the bag mouth is actuated to seal the packaging bag when the gas is replaced with a predetermined filling gas. apparatus. The gas supply mechanism includes:
A gas supply tank having a tank opening communicating with a pin hole for supplying a filling gas and having a filling gas filled in the tank;
A switch plate provided by partitioning the tank inside the gas supply tank,
The switch plate moves so as to change the partition position in the tank according to the increase or decrease of the pressure in the tank, and changes the tank volume of the gas supply tank.
With the filling gas supply from the tank to the filling gas supply pin hole, the switch plate gradually moves closer to the tank mouth,
4. The gas supply is automatically stopped when the switch plate moved close to the upper limit in pressure contact with the tank mouth in a state where the charged gas in the tank is below the critical amount. Packaging bag sealing device. The packaging bag sealing device according to any one of claims 1 to 3, wherein a plurality of pin holes of each locking pin are provided on a side surface of the locking pin at different circumferential positions around the pin. The plurality of locking pins are fixed with supporting strength to suspend the packaging bag, and are installed with the packaging bag accommodation direction vertically downward with the sealed chamber closed, to suspend the packaging bag. The sealing apparatus of the packaging bag in any one of Claims 1, 2, 3, or 4 to obtain. A packaging bag having a plurality of locking holes for locking and holding the bag itself at the bag mouth portion is used as a sealing object, and the inside of the packaging bag containing the contents is removed by a predetermined sealing device. A sealing method that seals the bag mouth in a degassed state,
The predetermined sealing device is at least:
A sealed space having a width equal to or greater than the width of the mouth of the bag mouth and having an upper opening is provided, and the bag mouth of the packaging bag can be accommodated and sealed from this specific space when viewed from the center of the sealed space. A sealed chamber;
An opening and closing mechanism that opens and closes the sealed space by opening and closing; and
A sealing mechanism that is provided at a corresponding position in the specific one-side direction of the sealed chamber and the opening / closing mechanism, and introduces or sandwiches a bag mouth according to opening / closing of the opening / closing mechanism, and heat-sealing;
A plurality of protrusions are formed to protrude from the bottom of the chamber near the center in the width direction in the sealed chamber, and are each locked in a locking hole of a bag mouth accommodated in the chamber, and a locking pin that communicates with a suction pump that decompresses the chamber,
A pin hole for vacuum suction formed in the protruding side surface or top surface of each locking pin, and communicating with the suction pump in the locking pin;
Comprising a sealing device comprising
A primary sealing step in which the mouth end of the bag mouth of the packaging bag containing the contents is sandwiched by the sealing mechanism and the sealing mechanism is operated to perform primary heating and sealing;
Each locking hole of the packaging bag after the first heat sealing is locked to each locking pin in the sealed chamber, the opening / closing mechanism is closed to make the sealed chamber in a sealed state, and the sealing pin is opened from the pin hole of the locking pin. A setting process in which the inside of the packaging bag is in a state of ventilation communication;
A pressure reducing step of sucking the gas in the sealed chamber after the setting step from the pin hole and reducing the pressure in the packaging bag and the sealed chamber until a predetermined pressure reduction state,
When the inside of the packaging bag and the sealed chamber are in a predetermined decompression state in the decompression process, the sealing mechanism is activated and sandwiched by the sealing mechanism below the lower edge of the locking hole of the packaging bag in the setting process. And a secondary sealing step of secondary heating and sealing the place, in order.

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