JP2000247308A - Pressure-reducing/sealing apparatus for bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suck air from a bag without depending upon air suction hours by correctly protruding the bag in accordance with bags of various sizes and preventing any of dust, moisture and various germs, which have been sucked together with sucked air, from being mixed in gas to be replaced, in a pressure- reducing/sealing apparatus. SOLUTION: A pressure-reducing/sealing apparatus 1 for a bag comprises a bag support unit 2 for supporting an opening portion of a bag 100 with a supporting force within the range of a predetermined supporting force value, an air suction unit 4 for sucking air in the bag 100 which is in the state of being supported by the bag support unit 2, and for stopping the suction of air when an air pressure in the bag 100 reaches a level not exceeding a preset air pressure value, a unit 6 for charging gas to be replaced which charges replacing gas into the bag 100 when the air pressure in the bag 100 reaches the level not exceeding the preset air pressure value, and a heat-sealing unit 8 for sealing the opening portion of the bag 100 after charging the replacing gas into the bag 100.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for deaeration of a bag containing articles, for example, for long-term storage of the articles,
The present invention relates to a reduced pressure sealing device for a bag, which can be applied when an appropriate amount of replacement gas is charged and the bag is sealed.

[0002]

2. Description of the Related Art A conventional vacuum packaging apparatus for articles such as foods generally includes a support mechanism for supporting a bag for packaging the articles, and an intake nozzle which communicates with a vacuum pump and suctions gas in the bag. And a heat sealing mechanism for sealing the opening of the bag after the gas in the bag is suctioned by the suction nozzle.

In this conventional vacuum packaging apparatus, when the replacement gas is loaded after the intake from the bag body, both the intake and the replacement gas are loaded using a single gas supply / discharge nozzle. . This single gas suction / discharge nozzle can be selectively connected to a vacuum pump and a replacement gas cylinder via a switching valve. In use, the gas supply / discharge nozzle is used to suction air from the bag body. After degassing, the switching valve is switched, and the replacement gas is sealed in the bag using the gas supply / discharge nozzle used for intake.

[0004]

By the way, in the conventional vacuum packaging apparatus as described above, the suction for deaeration by the vacuum pump is performed by setting the suction time using a time setting means such as a timer. It is. However, the degree of residual air in the bag after inhalation is a problem, and the air remaining in the bag has a great effect on the quality of the packaged object. Therefore, as long as the intake air amount is controlled by the intake time, there is a limit to eliminating the residual air in the bag after the intake.

Further, in the conventional vacuum packaging apparatus, when supporting a bag for packaging, the bag is supported by a pair of support levers which can move toward and away from each other. When supporting a bag of a size, the distance between the support levers is manually adjusted according to the size of the bag, or if there is no adjustment function, the bag is kept while maintaining the distance between the support members. The positioning or positioning of the bag is performed by holding and supporting the bag.

On the other hand, in the above-described conventional vacuum packaging apparatus, as described above, a single gas supply / discharge nozzle is used to perform intake and replacement gas loading. Dust, moisture,
Bacteria are also sucked together with the gas in the bag, and then the replacement gas is loaded by the same gas supply / discharge nozzle used for suction. At this time, dust, moisture, and various bacteria remaining in the gas supply / discharge nozzle and the gas supply / discharge passage communicating with the gas supply / discharge nozzle are also removed when the replacement gas is loaded. And is discharged into the bag from the gas supply / discharge nozzle, which is a serious problem in terms of hygiene, especially when the packaged object is food.

As a countermeasure, it is conceivable to provide a filter for catching dust, moisture and various germs in the gas supply / discharge nozzle. In this case, even though the outer wall surface of the gas supply / discharge nozzle can be cleaned each time it is used, it is not easy to clean the inner wall surface of the gas supply / discharge nozzle. Equal to impossible. If such a gas supply / discharge nozzle is used continuously, for example,
If germs adhere to any one of the used gas supply / discharge nozzles, there is a danger that germs attached to the nozzles will be sent to the subsequent packaging bag together with the replacement gas. . In the case of using the conventional vacuum packaging apparatus in which the intake and the replacement gas are loaded using the single gas supply / discharge nozzle as described above, it is very difficult to manage the sanitary aspect.

Further, the amount of air to be sucked in the bag varies depending on the size of the volume of the bag and the size of the packaged object contained in the bag, but the amount of suction is controlled by setting the suction time. In such a case, it is necessary to grasp the data in advance and to set the intake time again based on the data each time the size of the bag or the packaged object differs. Further, even in the case of the same type of package, the quality of the package is not always kept uniform by the set intake time because the package has a variation in shape and the like.

Further, the conventional vacuum packaging apparatus has a pair of support levers for supporting the bag body which can move in the directions approaching and separating from each other as described above. To support the body, insert the distal ends of the pair of support levers into the inside of the bag from the opening of the bag, and then move the support levers away from each other to create tension in the bag. Let it fix. In this case, the movable distance of the support lever is naturally determined by the length of the opening when the bag body becomes flat, but if the size of the bag body changes, the movable distance of the support lever also changes. The support lever movement mechanism must be adjusted to suit the distance. In addition, the size of the opening of the bag varies, and the supporting force of the supporting lever against the bag changes, and the bag may fall off from the supporting lever during operation. Therefore, there is a problem that management work including work such as fine adjustment of the support lever increases.

Accordingly, the present invention is to provide a method for supporting bags of various sizes so that the bags can be reliably supported so that the bags do not fall off from the bag supporting device during operation. In addition, the positioning or positioning of the bag body can be performed reliably and accurately, and dust, moisture, and germs, which have been sucked together with the intake air, are mixed into the replacement gas when the replacement gas is loaded. Various types of bags and bags with various volumes without depending on the suction time to ensure that sanitation can be ensured without being discharged into the bag. It is possible to reliably carry out packaging of various sizes and shapes to be accommodated in the body, eliminate the residual air in the bag after inhalation, and always keep the package for a long period of time. Maintain uniform quality To allow bets, administrative duties including the work of fine adjustment of various has to avoid a very small, it is intended to provide for pouch vacuum sealing apparatus (claim 1).

Further, the present invention is adapted to support the bag body corresponding to various sizes of the bag body so that the bag body does not fall out of the bag body supporting device during operation. In addition, the positioning or positioning of the bag body can be performed reliably and accurately, and dust and moisture remaining in the intake nozzle and the intake passage communicating with the intake nozzle once sucked together with the intake air Therefore, it is ensured that hygiene can be ensured by preventing germs from being mixed into the replacement gas at the time of loading the replacement gas and being discharged from the replacement gas loading nozzle into the bag. To be able to reliably perform inhalation in response to various bags and packages of various sizes and shapes accommodated in the bags without depending on the intake time, After inspiration It is possible to eliminate the residual air in the bag, always maintain the uniform quality over a long period of time, and seal the opening of the bag supported by the bag supporting device. The heat sealing device can smoothly perform the sealing operation on the bag body without interfering with the suction nozzle and the replacement gas charging nozzle, and the management work including various fine adjustments and the like can be extremely reduced. It is another object of the present invention to provide a reduced pressure sealing device for a bag.

Further, the present invention enables the bag to be reliably supported in correspondence with bags of various sizes so that the bag does not fall out of the bag supporting device during operation. In addition, the positioning or positioning of the bag body can be performed reliably and accurately, and dust, moisture, moisture, and the like that are once sucked together with the intake air and remain in the intake nozzle or the intake passage communicating with the intake nozzle are removed. To ensure that hygiene is not mixed into the replacement gas when the replacement gas is loaded and is discharged from the replacement gas loading nozzle into the bag, hygiene can be reliably ensured, and the Various bag bodies having various capacities are provided by an intake path opening / closing valve operation control device that controls the operation of an opening / closing valve that opens and closes an intake path based on the gas pressure in the bag body without depending on the intake time. And same Accurate and reliable operation can be performed for packages of various sizes and shapes to be accommodated in the body, and the residual amount of air in the bag after inhalation can be achieved by loading a set amount of replacement gas. The heat sealing device that seals the opening of the bag supported by the bag supporting device so as to always maintain the uniform quality of the packaged material over a long period of time by eliminating the suction nozzle and the suction nozzle To provide a vacuum sealing device for a bag that enables smooth sealing operation without interfering with a replacement gas charging nozzle and requires very little administrative work including various fine adjustments. (Claim 3).

Further, according to the present invention, the bag supporting apparatus can reliably support bags of various sizes so that the bags do not fall off from the bag supporting apparatus during operation. In addition to being able to perform positioning and positioning of the bag body reliably and accurately,
Dust, moisture, and bacteria remaining in the intake nozzle and the intake path communicating with the intake nozzle once sucked together with the intake air are mixed into the replacement gas when the replacement gas is loaded, and the bag is discharged from the replacement gas loading nozzle. In order not to be exhaled into the body, it is possible to ensure hygiene without fail, and to inhale air from the bag body without depending on the intake time, based on the gas pressure in the bag body, By controlling the operation of the on-off valve that opens and closes, the intake path on-off valve operation control device can handle various types of bags with various capacities and objects of various sizes and shapes contained in the bag. It is possible to maintain the uniform quality of the package over a long period of time by eliminating the residual air in the bag after inhalation by loading the set amount of the replacement gas so that the process can be performed accurately and reliably. To be able to The air nozzle and the replacement gas charging nozzle can smoothly move forward and backward without interfering with the heat sealing device, and the management work including various fine adjustment operations can be extremely reduced. It is an object of the present invention to provide a reduced-pressure sealing device for a body (claim 4).

Further, the present invention prevents the bag from dropping from the bag supporting device during the operation by operating the bag supporting force automatic adjusting device so as to correspond to bags of various sizes. The pair of bag support members laterally move in the direction of approaching and separating from each other, and engage with the opening of the bag, and the opening can be opened flat and supported by the supporting force in the direction of separating from the bag. So that the bag can be reliably supported, and the positioning of the bag can be surely and accurately performed, so that dust, moisture, and various germs once sucked together with the intake air can be removed. At the time of loading the replacement gas, it is ensured that hygiene can be ensured by preventing the gas from being mixed into the replacement gas and being discharged into the bag.
Ensuring the suction from the bag in response to various bags with various volumes and objects of various sizes and shapes to be accommodated in the bag without depending on the suction time To maintain the uniform quality of the packaged material for a long period of time by eliminating air remaining in the bag after inhalation, and to perform management including various fine adjustments and the like. The work was reduced to a very small amount,
It is an object of the present invention to provide a reduced pressure sealing device for a bag.

[0015]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a reduced pressure sealing device for a bag according to the present invention provides a bag for supporting an opening of a bag with a supporting force within a set supporting force value. A body support device, and an intake device that inhales gas in the bag in a state supported by the bag support device and stops the intake when the gas pressure in the bag reaches a set gas pressure value or less, A replacement gas loading device for loading a replacement gas into the bag when the gas pressure in the bag reaches a set gas pressure value or less by the suction of the suction device, and after the replacement gas is loaded by the replacement gas loading device. A bag sealing device for sealing the opening of the bag.

The reduced pressure sealing device for a bag according to the present invention is the same as the bag supporting device for supporting the opening of the bag made of a non-permeable material with a supporting force within a set supporting force value. An intake nozzle that inhales gas in the bag in a state supported by the bag support device, and the intake nozzle when the gas pressure in the bag reaches a set gas pressure value or less due to the intake of the intake nozzle. An intake control device for automatically stopping the intake, and a replacement gas loading nozzle for loading a replacement gas into the bag when the gas pressure in the bag reaches a set gas pressure value or less by the suction of the suction nozzle. When the gas pressure in the bag body reaches a set gas pressure value or less by the suction of the suction nozzle, the supply of the replacement gas to the replacement gas loading nozzle is started, and the replacement gas is set by the replacement gas loading nozzle. Quantity of clothing A replacement gas loading control device for automatically stopping the loading of the replacement gas later, and an inner position of the bag body in a state where the respective tips of the intake nozzle and the replacement gas loading nozzle are supported by the bag support device. A nozzle advancing and retreating device for reciprocating between the same internal position and a retreating position retreated to the outside of the bag body, and the suction nozzle and the replacement gas loading nozzle are moved by the nozzle retreating device to the retreat position. And a heat sealing device that seals the opening of the bag body supported by the bag body supporting device when the bag body is retracted to the position.

Further, in the pressure reducing sealing device for a bag according to the present invention, the suction nozzle communicates with a vacuum source through a suction path and a suction path opening / closing valve, and the suction control device controls the suction body by the suction nozzle. At the start of the intake from, the intake path opening / closing valve is initially set to open and the intake path opening / closing valve is opened when the gas pressure in the bag body reaches a set gas pressure value or less by the intake of the intake nozzle. An intake path opening / closing valve operation control device that closes to automatically stop the intake by the intake nozzle, wherein the replacement gas loading nozzle is connected to a replacement gas source via a replacement gas supply path and a replacement gas supply path opening / closing valve. The replacement gas loading control device opens the replacement gas supply passage opening and closing valve when the gas pressure in the bag body reaches a set gas pressure value or less by the suction of the suction nozzle, After the replacement gas is loaded by the replacement gas loading nozzle at the set amount, the replacement gas supply path opening / closing valve is closed to automatically stop the replacement gas loading by the replacement gas loading nozzle. It has a supply path opening / closing valve operation control device.

In the pressure reducing sealing device for a bag according to the present invention, the nozzle advancing and retreating device includes a nozzle supporting means for supporting the suction nozzle and the replacement gas loading nozzle, and the nozzle supporting means includes the suction nozzle and the suction nozzle. A nozzle guiding means for guiding the nozzle in the reciprocating movement direction together with the replacement gas loading nozzle; and when the suction nozzle starts suctioning from the bag body, each tip of the suction nozzle and the replacement gas loading nozzle is connected to the bag body. The bag is advanced to the inside position of the bag body supported by the support device, and after the replacement gas is loaded by the replacement gas loading nozzle, the bag body is moved outward from the inside position to the bag body relative to the bag body. A nozzle reciprocating movement control device for reciprocating the nozzle support means together with the suction nozzle and the replacement gas loading nozzle so as to retreat. The it has.

Further, in the bag sealing device according to the present invention, the bag supporting device can move laterally in a direction approaching and separating from each other, and can engage with an opening of the bag to separate from each other. A pair of bag supporting members that open and support the opening flat by the supporting force of the pair, and automatically adjust the supporting force of the pair of bag supporting members to be within a set supporting force value. And an automatic adjusting device for adjusting the bag supporting force.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a bag pressure reducing sealing device according to one embodiment of the present invention, and FIG. 2 is a view of the bag pressure reducing sealing device according to the embodiment of FIG. 1 taken along line AA. FIG. 3 is an enlarged perspective view of a main portion of the bag pressure reducing / sealing device according to the embodiment of FIG. 1, and FIG. 4 is an intake control and a bag pressure reducing / sealing device of the embodiment of FIG. FIG. 5 is a schematic side sectional view of a main part of a heat sealing device of the bag pressure reducing / sealing apparatus according to the embodiment of FIG. 1.

Referring first to FIGS. 1 and 2, a reduced pressure sealing device 1 for a bag includes a bag 10 made of a non-permeable material such as a synthetic resin.
The bag support device 2 that supports the opening 0 with a support force within the range of the set support force value, and the bag device 100 that inhales the gas in the bag 100 supported by the bag support device 2 and sucks the gas. 10
The suction device 4 that stops the suction when the gas pressure within 0 reaches the set gas pressure value or less, and the gas pressure in the bag body 100 reaches the set gas pressure value or less due to the suction of the suction device 4. A replacement gas loading device 6 for loading the replacement gas into the bag 100, and a heat sealing device 8 as a bag sealing device for sealing the opening of the bag 100 after the replacement gas is loaded by the replacement gas loading device 6. have.

As shown in FIG. 1, FIG. 2 and FIG. 3, the bag supporting device 2 is mounted on the upper surface of a horizontal worktable 36 integrally fixed to, for example, the outer frame of the bag pressure reducing / sealing device 1. It has a pair of bag support members 3a, 3b that can move laterally in directions that approach and separate from each other. The pair of bag supporting members 3a, 3b can be supported by engaging the opening of the bag 100 and opening the opening flat by a supporting force in a direction away from each other. In particular, as clearly shown in FIG. 3, the portions of the bag supporting members 3a and 3b near the distal end are provided with a counterpart from the inner surface of the opening of the bag 100 when engaged with the opening of the bag 100, respectively. Pressure sensors 34a and 34b are provided for detecting a supporting force of the pair of bag supporting members 3a and 3b on the bag 100 by receiving a force. The bag support device 2 further automatically adjusts the support force of the pair of bag support members 3a, 3b detected by the pressure sensors 34a, 34b so as to maintain the support force within a set support force value range. Built-in automatic force adjustment device.

1, 2 and 3, the above-described bag supporting device 2 supports the bag supporting member 3a and moves the bag supporting member 3a along the upper surface of the work table 36. 3
b, or when the heat sealing device 8 seals the opening of the bag 100, the distal end of the bag supporting member 3a is positioned higher than the position of the heat sealing device 8. The bag supporting member 3a may be retracted to the retracted position, or the bag supporting member 3a may be advanced to a position on the upper surface of the horizontal work table 36 again to support a new bag 100. It has a bag support member actuator 2a. In addition, the bag supporting device 2 supports the bag supporting member 3b and moves the bag supporting member 3b relatively close to and away from the bag supporting member 3a along the upper surface of the work table 36. When moving or sealing the opening of the bag 100 with the heat sealing device 8, the bag supporting member 3 b is retracted until the tip of the bag supporting member 3 b is retracted from the position of the heat sealing device 8. And a bag support member operating device 2b that can advance the bag support member 3b to a position on the upper surface of the horizontal work table 36 again to support the new bag 100. .

As shown in FIGS. 1, 2 and 3, both the pair of bag support members 3a and 3b may be configured to move symmetrically as described above, Any one of the bag supporting members 3a and 3b can move with respect to the frame 1a of the bag vacuum sealing device 1.
The other of the pair of bag support members 3a and 3b may be configured to maintain a fixed position with respect to the frame 1a of the bag vacuum sealing device 1. A pair of bag support members 3
When only one of the a and 3b is configured to move with respect to the frame 1a of the bag decompression sealing device 1, the bag supporting member operating device of the bag supporting device 2 includes a bag Only the bag supporting member operating device corresponding to the bag supporting member on the side moving with respect to the frame 1a of the vacuum decompression / sealing apparatus 1 is required.

As shown in FIG. 5, the bag supporting member operating device 2a and the bag supporting member operating device 2b have common or individual bag moving cylinders 17 respectively. When the bag body advance / retreat cylinder 17 is extended, for example, when the bag body 100 is newly supported by the control operation of the control device of the apparatus 2, the bag body support members 3a and 3b are placed on the upper surface of the worktable 36. When the bag body advancing / retreating cylinder 17 contracts, for example, when the opening of the bag body 100 is sealed by the heat sealing device 8 by the control operation of the control device of the bag body supporting device 2, The bag supporting member 3a and the bag supporting member 3b respectively retreat until the respective distal ends of the body supporting member 3a and the bag supporting member 3b are retracted from the position of the heat sealing device 8.

1, 2, 4, and 5, the suction device 4 includes a pair of bag support members 3 a of the bag support device 2.
A suction nozzle 5 for sucking gas in the bag body 100 supported by the airbag 3b;
And a suction control device 22 for automatically stopping the suction by the suction nozzle 5 when the gas pressure in 00 reaches a set gas pressure value or less. On the other hand, when the gas pressure in the bag 100 reaches the set gas pressure value or less by the suction of the suction nozzle 5, the replacement gas
And a replacement gas loading nozzle 7 for loading the replacement gas into the nozzles 0 and a replacement gas loading nozzle 7 when the gas pressure in the bag 100 reaches a set gas pressure value or less by the suction of the suction nozzle 5.
And a replacement gas loading control unit 23 for automatically starting replacement gas supply to the replacement gas and automatically stopping replacement gas loading after the replacement gas loading nozzle 7 has loaded a replacement gas.

The above-mentioned intake control device 22 is provided with the intake nozzle 5
The above-mentioned set gas pressure value for the gas pressure in the bag body 100 when automatically stopping the suction by the gas and the replacement gas loading control device 23
The above-mentioned set gas pressure value for the gas pressure in the bag 100 when the supply of the replacement gas to the gas supply is started may be the same set gas pressure value or may be slightly different. good. In this case, the gas pressure in the bag body 100 when stopping the suction by the suction nozzle 5 so that the supply of the replacement gas to the replacement gas loading nozzle 7 is started before the time when the suction by the suction nozzle 5 is stopped. And the replacement gas loading control device 23 when the replacement gas loading control device 23 starts supplying the replacement gas to the replacement gas loading nozzle 7.
If the set gas pressure value for the gas pressure in 00 is set in advance, the replacement gas acts to discharge the gas existing in the bag 100 before, so that the replacement gas to the replacement gas loading nozzle 7 is Before starting the supply of
The gas previously existing in the bag 100 can be completely exhausted by using the gas exhausting action of the replacement gas without performing complete intake by the intake nozzle 5 from the air.

As shown in FIGS. 1, 2 and 4, the distal end of the replacement gas loading nozzle 7 is made to protrude forward more than the distal end of the intake nozzle 5 so that, as described above, the intake nozzle In the case where the supply of the replacement gas to the replacement gas charging nozzle 7 is started before the point at which the suction by the suction gas 5 is stopped, the replacement gas sent into the bag body 100 has existed in the bag body 100 before. The effect of discharging the generated gas can be effectively performed.

1, 2, 4 and 5, the base end of the suction nozzle 5 is supported by nozzle support means 9 a constituting a nozzle advancing and retreating device 9, while the replacement gas loading nozzle 9 Reference numeral 7 is supported by nozzle support means 9b constituting a nozzle advance / retreat moving device 9. And
When the heat sealing device 8 seals the opening of the bag body 100, the nozzle advancing and retreating device 9 is at a position where the distal ends of the intake nozzle 5 and the replacement gas loading nozzle 7 are retracted from the position of the heat sealing device 8. The suction nozzle 5 and the replacement gas loading nozzle 7 are retracted until the next suction from the bag body 100 and the replacement gas is charged into the same bag body 100. The nozzle 5 and the replacement gas loading nozzle 7 can be advanced.

As shown in FIG. 5, the nozzle advance / retreat moving device 9
Is a nozzle moving cylinder 18 and a nozzle supporting means 9
A nozzle guide means (not shown) for guiding the nozzles a and 9b together with the suction nozzle 5 and the replacement gas loading nozzle 7 in the direction of movement of the suction nozzle 5 and the replacement gas loading nozzle 7 is provided. By the control operation of a nozzle advance / retreat control device (not shown) constituting the nozzle advance / retreat device 9, when the intake nozzle 5 starts to inhale air from the inside of the bag 100, the nozzle advance / retreat cylinder 18 expands, and the intake nozzle 5 and the replacement gas loading nozzle 7 move forward to a position on the upper surface of the worktable 36, and the respective tips of the suction nozzle 5 and the replacement gas loading nozzle 7 are moved to the pair of bags of the bag support device 2 on the worktable 36. It advances to the inside position of the bag 100 supported by the body supporting members 3a and 3b.

In FIG. 5, when the bag 100 is sealed by the heat sealing device 8 after the replacement gas is loaded by the replacement gas loading nozzle 7, the nozzle advance / retreat movement cylinder 18 is controlled by the nozzle advance / retreat movement control device. Is contracted, so that the tip of each of the suction nozzle 5 and the replacement gas loading nozzle 7 moves outward from the bag 100 until it reaches a position retracted from the position inside the bag 100 to the position of the heat sealing device 8. The suction nozzle 5 and the replacement gas loading nozzle 7 are moved backward with respect to the bag 100.
Respectively retreat relative to the pair of bag support members 3a, 3b.

2 and 4, the intake nozzle 5 is
The nozzle support means 9a of the nozzle advance / retreat moving device 9, the intake path 10, the intake path opening / closing valve 11, and the vacuum source formed of a flexible material so that a part of the section can follow the advance / retreat movement of the intake nozzle 5. Through the 12 main stoppers 35, for example, it communicates with the vacuum source 12 such as a vacuum tank or a vacuum cylinder. A filter 19 for catching dust, moisture, and various germs is provided in an intake hole communicating with the intake nozzle 5 in the nozzle support means 9a. Further, inside the vacuum source 12 such as a vacuum tank or a vacuum cylinder, for example, a vacuum pump 1
3, the bag is always kept in a vacuum state higher than the required vacuum degree, and the bag supporting members 3a, 3b of the bag supporting device 2
When the gas in the bag 100 supported by the airbag is sucked in by the suction nozzle 5, the gas in the bag 100 is rapidly sucked into the vacuum source 12 in a short time. .

The intake nozzle 5 is provided with a male screw formed on the outer peripheral surface of the base end of the intake nozzle 5 with respect to the nozzle support means 9a of the nozzle advancing / retreating device 9, for example.
It can be configured such that it can be detachably mounted by screwing into a female screw hole formed on the a side or by simple mounting means such as a one-touch type pipe connection tool. The intake nozzle 5 can be detachably attached to the nozzle support means 9a of the nozzle advance / retreat / movement device 9 by detachably attaching the intake nozzle 5 to the nozzle support means 9a of the nozzle advance / retreat / movement device 9. By performing cleaning, the suction nozzle 5 can be always kept clean. Since the replacement gas loading nozzle 7 is dedicated to the supply of the replacement gas, dust, moisture, germs and the like from inside the bag 100 do not enter the nozzle.

As shown in FIGS. 2 and 4, the replacement gas loading nozzle 7 is
b, a replacement gas supply path 14, a replacement gas supply path opening / closing valve 15, and a main plug of the replacement gas source 16 formed of a flexible material so that a part of the section can follow the movement of the replacement gas loading nozzle 7. Through 36, it is connected to a replacement gas source 16 such as a replacement gas cylinder for storing a replacement gas such as nitrogen or an inert gas. A filter 20 for capturing dust, moisture, and various germs can be provided in the replacement gas supply hole communicating with the replacement gas nozzle 7 in the nozzle support means 9b. Since the flow of the gas passing through the nozzle 7 is a one-way flow of the replacement gas supply, dust, moisture, germs and the like from the inside of the bag 100 do not enter the inside of the replacement gas loading nozzle 7, and the replacement gas nozzle 7 does not necessarily flow. It is not necessary to dispose the filter 20 in the replacement gas supply hole communicating with the filter.

2 and 4, the intake nozzle 5 and an appropriate position of the intake passage 10 between the tip of the intake nozzle 5 and the intake passage opening / closing valve 11, for example, the intake passage 10 near the intake nozzle 5 as shown in FIG. A gas pressure sensor 21 is disposed on the side wall portion of the air conditioner. The gas pressure signal representing the gas pressure in the intake passage 10 detected by the gas pressure sensor 21 is
As the gas pressure signal indicating the gas pressure in the bag body 100 communicating with the airbag 0, an intake passage opening / closing valve operation control device 24 constituting the intake control device 22 and a replacement gas supply passage opening / closing constituting the replacement gas loading control device 23. It is transmitted to the valve operation control device 25.

As shown in FIGS. 2 and 4, the intake passage opening / closing valve operation control device 24 constituting the intake passage control device 22 controls the intake passage opening / closing valve 11 when the intake nozzle 5 starts to inhale air from the inside of the bag 100. Based on a gas pressure signal indicating the gas pressure in the bag body 100 sent from the gas pressure sensor 21 and initially set by the manual operation means or the automatic operation mechanism to open the bag body, the bag body is suctioned by the suction nozzle 5. 10
When the gas pressure within 0 reaches a set gas pressure value or less, the intake passage opening / closing valve 11 is closed and the intake by the intake nozzle 5 is automatically stopped.

In FIGS. 2 and 4, the replacement gas supply path opening / closing valve operation control device 25 constituting the replacement gas loading control device 23 is a gas pressure indicating the gas pressure in the bag 100 sent from the gas pressure sensor 21. Based on the signal, when the gas pressure in the bag body 100 reaches a set gas pressure value or less due to the suction of the suction nozzle 5, the replacement gas supply path opening / closing valve 15 is opened, and the replacement gas is charged by the replacement gas loading nozzle 7. The replacement gas supply path opening / closing valve 15 is closed after the loading of the set amount is performed, and the replacement gas loading nozzle 7 is automatically stopped from loading the replacement gas.

In FIG. 5, a surface included by the intake nozzle 5 and the replacement gas loading nozzle 7 is connected to a pair of bag supporting members 3a, 3a.
b are illustrated as different for convenience of explanation, but in reality, the surfaces included in the suction nozzle 5 and the replacement gas loading nozzle 7 and the pair of bag support members 3a, 3a
5b may be the same plane, or the surface included in the suction nozzle 5 and the replacement gas loading nozzle 7 and the surface included in the pair of bag support members 3a and 3b may be used as needed. May be slightly different as shown in FIG. Also, the planes included by the intake nozzle 5 and the replacement gas loading nozzle 7 and the planes included by the pair of bag support members 3a and 3b may be horizontal planes as shown in FIGS. May be both vertical surfaces or inclined surfaces inclined with respect to a horizontal plane.

As shown in FIG. 5, the heat sealing device 8
Is moved forward and backward with respect to one surface of the bag 100 by the first airtight holding cylinder 26 disposed so as to face one surface of the bag 100 supported by the pair of bag support members 3a and 3b. The first elastic pressing body 27 that moves and the first heat seal cylinder 30 that is disposed to face one surface of the bag 100 serve as a heating element that moves forward and backward with respect to one surface of the bag 100. Heat seal bar 31
And a second airtight holding cylinder 28 disposed so as to face the other surface of the bag 100 supported by the pair of bag support members 3a and 3b. 2nd elastic holding body 2 which advances and retreats with respect to the other surface of
9 and a second heat seal cylinder 32 disposed so as to face the other surface of the bag 100,
0 with respect to the other surface.

Referring to FIGS. 1, 2, 3 and 5, an example of the operation sequence of the case where the operation of the bag pressure reducing / sealing apparatus 1 is manually started will be described. First, the condition setting button 3 provided on the frame 1a of the bag vacuum sealing device 1
Press 8, 39 to set various operating conditions,
When the reset button 40 is pushed, the bag body moving cylinder 1
7 and the nozzle advance / retreat moving cylinder 18 are extended, and the bag supporting members 3a and 3b, the intake nozzle 5 and the replacement gas loading nozzle 7 are advanced to a position on the upper surface of the worktable 36. In this state, after opening the opening of the bag 100 over the pair of bag supporting members 3a and 3b and pressing the operation start button 41, the pair of bag supporting members 3a and 3b The opening is flattened and supported by the support force in the direction away from each other by engaging with the portion and moving away from each other. At that time, the supporting force of the pair of bag supporting members 3a, 3b detected by the pressure sensors 34a, 34b is:
When the supporting force set in advance is reached, each bag supporting member 3
The movement of a and 3b in directions away from each other immediately stops.

In FIGS. 2, 4 and 5, when the movement of the bag supporting members 3a and 3b in the directions away from each other is stopped as described above, the suction nozzle 5 of the suction device 4
When the gas in the bag 100 is suctioned and the replacement gas loading nozzle 7 of the replacement gas loading device 6 causes the gas pressure in the bag 100 to reach the set gas pressure value or less due to the suction of the suction nozzle 5, the bag is charged. 100 is charged with a replacement gas. In the meantime, the suction control device 22 of the suction device 4 automatically stops the suction by the suction nozzle 5 when the gas pressure in the bag body 100 reaches the set gas pressure value or less due to the suction of the suction nozzle 5.

The above described replacement gas loading nozzle 7 is
The set pressure value of the gas pressure value inside the bag 100 when the replacement gas is loaded into the inside, and the set pressure value of the gas pressure value inside the bag 100 when the suction by the suction nozzle 5 is automatically stopped. Each value can be set individually,
If both setting values are the same, the condition setting button 3
8 allows the set pressure value to be set in one operation.

In FIGS. 2, 4 and 5, when the replacement gas is loaded into the bag 100 by the replacement gas loading nozzle 7 for a set amount of time over the set time, the replacement gas loading control device 23 performs the replacement. Automatically stop gas loading. When the replacement gas loading control device 23 automatically stops loading the replacement gas, the control unit of the bag support device 2 controls the bag advance / retreat cylinder 17 so that the bag support member 3a, Each of the bag support members 3a and 3b is retracted until the respective distal end portions of 3b are retracted from the positions of the heat seal bar 31 and the heat-resistant elastic body 33 of the heat seal device 8.

As described above, each end of the bag supporting members 3a, 3b is connected to the heat sealing bar 3 of the heat sealing device 8.
When the respective bag support members 3a and 3b are respectively retracted until they reach a position retracted from the positions of the first and heat-resistant elastic bodies 33, the first airtight holding cylinder 26 and the second airtight holding cylinder 28 extend, respectively. The first elastic pressing body 27 and the second elastic pressing body 29 elastically press the opening of the bag 100 and keep the opening of the bag 100 airtight.

2, 4 and 5, the first elastic pressing member 27 and the second elastic pressing member 29 cooperate with each other to elastically press the opening of the bag 100, and 100
In a state where the airtightness of the opening is maintained, the nozzle advance / retreat movement cylinder 18 contracts by the control operation of the nozzle advance / retreat movement control device, and the intake nozzle 5 and the replacement gas loading nozzle 7
Of the heat sealing bar 31 and the heat-resistant elastic body 33 of the heat sealing device 8 from the position inside the bag 100 to the position retracted from the position of the heat-resistant elastic body 33. The intake nozzle 5 and the replacement gas loading nozzle 7 are relatively retracted with respect to the pair of bag support members 3a and 3b, respectively, so as to relatively move backward.

Each end of the intake nozzle 5 and the replacement gas loading nozzle 7 is connected to the heat seal bar 3 of the heat seal device 8.
As soon as the first heat seal cylinder 30 and the second heat seal cylinder 32 extend from the positions of the first heat seal elastic body 33 and the heat resistant elastic body 33, the heat seal bar 31 and the heat resistant elastic body 33 sandwich the opening of the bag 100. Then, the heat seal bar 31 heats and melts the opening of the bag 100 to seal it.

Heat seal bar 31 and heat-resistant elastic body 33
When the opening of the bag body 100 is sealed by the first and second airtight holding cylinders 26 and 28, respectively, the first airtight holding cylinder 26 and the second airtight holding cylinder 28 contract, and the first elastic pressing body 27 and the second elastic pressing body 29 The first heat seal cylinder 30 and the second heat seal cylinder 32 are contracted while retracting from the opening, and the heat seal bar 31 and the heat-resistant elastic body 33 are retracted from the opening of the bag 100. Subsequently, each of the bag supporting members 3a and 3b moves in a direction approaching each other to release the opening of the bag 100 from the supporting state.

[0048]

According to the vacuum sealing device for bags of the present invention,
The following effects can be obtained. (1) A bag supporting device for supporting the opening of the bag with a supporting force within a set supporting force value, and a gas in the bag supported by the bag supporting device is sucked and sucked. An air intake device that stops the intake when the gas pressure in the bag reaches a set gas pressure value or less, and an air intake device that stops the air intake when the gas pressure in the bag reaches a set gas pressure value or less due to the intake of the air intake device. A replacement gas loading device for loading a replacement gas into the bag body,
A bag sealing device that seals the opening of the bag after the replacement gas is loaded by the replacement gas loading device, so that the bag can be operated from the bag support device in response to bags of various sizes. The bag can be reliably supported so that it does not fall into the bag, the bag can be positioned or positioned reliably and accurately, and dust and moisture once sucked together with the air intake can be obtained. In addition, hygiene can be reliably ensured by preventing various bacteria from being mixed into the replacement gas at the time of loading the replacement gas and being discharged into the bag, and the suction from the bag depends on the suction time. It can be carried out reliably in response to various bags with various capacities and objects of various sizes and shapes contained in the bag, and eliminates residual air in the bag after inhalation. And always keep the packaged product uniform over a long period of time. Can maintain the quality, management work including the work of fine adjustment of various requires only a very small (claim 1). (2) a bag supporting device that supports the opening of the bag made of a non-breathable material with a supporting force within a set supporting force value;
An intake nozzle for inhaling the gas in the bag in a state supported by the bag supporting device; and an intake nozzle when the gas pressure in the bag reaches a set gas pressure value or less by the intake of the intake nozzle. A suction control device for automatically stopping the suction by the suction nozzle, and a replacement gas loading nozzle for loading a replacement gas into the bag when the gas pressure in the bag reaches a set gas pressure value or less by the suction of the suction nozzle. When the gas pressure in the bag body reaches a set gas pressure value or less by the suction of the suction nozzle, the supply of the replacement gas to the replacement gas loading nozzle is started, and the replacement gas is supplied by the replacement gas loading nozzle. A replacement gas loading control device that automatically stops loading the same replacement gas after loading a set amount, and each end of the suction nozzle and the replacement gas loading nozzle is supported by the bag support device. A nozzle advancing / retracting device for moving forward and backward between an inner position of the bag body in the opened state and a retreat position retracted from the inner position to the outside of the bag body, the suction nozzle and the replacement gas loading nozzle A heat sealing device that seals the opening of the bag body supported by the bag body supporting device when the bag body is moved backward to the retracted position by the nozzle advancing and retreating device. According to the bag, the bag can be reliably supported so that the bag does not fall off from the bag supporting device during operation, and the positioning or positioning of the bag can be performed reliably and accurately. Dust, moisture, and bacteria remaining in the intake nozzle and the intake path communicating with the intake nozzle once sucked together with the intake air are mixed into the replacement gas when the replacement gas is loaded, and the replacement gas is loaded. Hygiene can be reliably ensured by preventing the spill from being discharged into the bag, and the suction from the bag can be performed in various bags having various capacities without depending on the suction time. It can be carried out reliably in response to various sizes and shapes of the packaged items contained in the bag, eliminates the residual air in the bag after inhalation, and ensures that the packaged items remain uniform over a long period of time. Quality can be maintained, and the heat sealing device for sealing the opening of the bag supported by the bag supporting device can smoothly perform the sealing operation without interfering with the intake nozzle and the replacement gas charging nozzle. Thus, the number of management operations including various fine adjustment operations can be extremely reduced (claim 2). (3) The intake nozzle communicates with a vacuum source via an intake path and an intake path opening / closing valve, and the intake control device opens the intake path opening / closing valve when the intake nozzle starts intake from the bag body. When the gas pressure in the bag body reaches the set gas pressure value or less by the suction of the suction nozzle, the suction passage opening / closing valve is closed and the suction by the suction nozzle is automatically performed. An intake passage opening / closing valve operation control device to be stopped, wherein the replacement gas loading nozzle communicates with a replacement gas source via a replacement gas supply passage and a replacement gas supply passage opening / closing valve, and the replacement gas loading control device comprises: When the gas pressure in the bag body reaches a set gas pressure value or less by the suction of the suction nozzle, the replacement gas supply path opening / closing valve is opened, and the set amount of the replacement gas is set by the replacement gas loading nozzle. Since the replacement gas supply path opening / closing valve is closed, the replacement gas supply path opening / closing valve operation control device for automatically stopping the replacement gas loading by the replacement gas loading nozzle is provided. In correspondence with bags of various sizes, the bags can be reliably supported so that the bags do not fall off from the bag support device during operation.
The positioning or positioning of the bag can be performed reliably and accurately, and dust, moisture, and various bacteria that are once sucked together with the intake air and remain in the intake nozzle or the intake passage communicating with the intake nozzle are removed. When the replacement gas is loaded, it is ensured that hygiene can be ensured by preventing the gas from being mixed into the replacement gas and being expelled from the replacement gas loading nozzle into the bag, thereby ensuring the sanitation. Without depending on
By controlling the operation of the on-off valve that controls the operation of the on-off valve that opens and closes the intake path by detecting the gas pressure in the bag, various bags with various volumes and various It can be performed accurately and reliably according to the size and shape of the package, and by setting the replacement gas, the residual air in the bag after inhalation is eliminated and the long time of the package is maintained. And the heat sealing device for sealing the opening of the bag supported by the bag supporting device smoothly operates without interfering with the intake nozzle and the replacement gas charging nozzle. , And the number of management operations including various fine adjustment operations is extremely small (claim 3). (4) nozzle support means for supporting the suction nozzle and the replacement gas loading nozzle,
Nozzle guide means for guiding the nozzle supporting means together with the suction nozzle and the replacement gas loading nozzle in the direction of movement of the nozzle, and loading of the suction nozzle and the replacement gas when the suction nozzle starts suctioning from the inside of the bag. Each tip of the nozzle is advanced to the inside position of the bag body supported by the bag body supporting device, and after the replacement gas is loaded by the replacement gas loading nozzle, the inside of the bag body is moved outward from the inside position. A nozzle advance / retreat movement control device for moving the nozzle support means forward and backward together with the suction nozzle and the replacement gas loading nozzle so as to relatively move backward with respect to the bag body; In response to the bag, the bag supporting device can reliably support the bag so that the bag does not fall off during the operation from the bag supporting device. Placement or positioning can be performed reliably and accurately, and dust, moisture and bacteria remaining in the suction nozzle and the suction passage communicating with the suction nozzle once sucked together with the suction air are charged with the replacement gas. At the same time, sanitation can be ensured by preventing the gas from being mixed into the same replacement gas and being discharged into the bag from the replacement gas loading nozzle, and the suction from the bag does not depend on the suction time. By controlling the operation of the on-off valve that controls the operation of the on-off valve that opens and closes the intake path by detecting the gas pressure in the bag, various bags with various volumes and various It can be performed accurately and reliably according to the size and shape of the package, and by setting the replacement gas, the residual air in the bag after inhalation is eliminated and the long time of the package is maintained. Uniform Quality can be maintained, the intake nozzle and the replacement gas loading nozzle can smoothly move back and forth without interfering with the heat sealing device, and the number of management operations including various fine adjustment operations is extremely small. (Claim 4). (5) The bag support device is capable of laterally moving in the direction of approaching and separating from each other, engaging with the opening of the bag and opening the opening flat by the support force in the direction of separating from each other. A pair of bag supporting members to be supported, and a bag supporting force automatic adjusting device that automatically adjusts the supporting force of the same pair of bag supporting members so as to be maintained within a range of a set supporting force value. Because of the operation of the bag support force automatic adjustment device,
In accordance with bags of various sizes, the bags are prevented from dropping out of the bag supporting device during operation, and the pair of bag supporting members are laterally moved in the direction of approaching and separating from each other to open the bags. The opening can be flatly opened and supported by the supporting force in the direction in which the bag is engaged with and separated from each other, and the bag can be reliably supported, and the positioning of the bag can be reliably and accurately performed. Dust, moisture and bacteria once sucked together with the intake air do not mix with the replacement gas and are discharged into the bag when the replacement gas is loaded, thereby ensuring hygiene. The air intake from the bag can be performed without depending on the suction time, in response to various bags having various volumes and objects to be packaged with various sizes and shapes to be stored in the bag. Can be performed reliably, bag after inhalation Long period of time over can maintain a uniform quality at all times to be packaged to eliminate the residual air in,
The number of management operations including various fine adjustment operations is extremely small (claim 5).

[Brief description of the drawings]

FIG. 1 is a perspective view of a vacuum sealing device for a bag according to an embodiment of the present invention.

FIG. 2 is a plan sectional view of a main part of the pressure-reducing and sealing device for a bag according to the embodiment of FIG. 1 as viewed along line AA.

FIG. 3 is an enlarged perspective view of a main part of the pressure reducing sealing device for a bag according to the embodiment of FIG. 1;

FIG. 4 is a conceptual diagram of a control system for controlling suction and replacement gas charging of the pressure reducing sealing device for a bag according to the embodiment of FIG. 1;

FIG. 5 is a conceptual cross-sectional side view of a main part of a heat sealing device of the pressure reducing sealing device for a bag according to the embodiment of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Decompression sealing device for bags 1a Frame of decompression sealing device 1 for bags 2 Bag support device 2a, 2b Bag support member operation device 3a, 3b Bag support member 4 Intake device 5 Intake nozzle 6 Replacement gas loading device 7 Replacement gas loading nozzle 8 Heat seal device 9 Nozzle advance / retreat device 10 Intake path 11 Intake path open / close valve 12 Vacuum source 13 Vacuum pump 14 Replacement gas supply path 15 Replacement gas supply path open / close valve 16 Replacement gas source 17 Bag body advance / retreat movement cylinder Reference Signs List 18 Nozzle advance / retreat moving cylinder 19 Filter 20 Filter 21 Gas pressure sensor 22 Intake control device 23 Replacement gas loading control device 24 Intake passage opening / closing valve operation control device 25 Replacement gas supply passage opening / closing valve operation control device 26 First airtight holding cylinder 27 First Elastic retainer 28 Second airtight holding cylinder 29 Second elastic retainer 30 First heat seal Sunda 31 heat seal bars (heating element) 32 second heat sealing cylinder 33 heat-resistant elastic member 34a, 34b a pressure sensor 35, 36 the main valve 37 worktable 38 and 39 condition setting button 40 reset button 41 operating start button 100 bag

Claims (5)

[Claims] 1. A bag supporting device for supporting an opening of a bag with a supporting force within a range of a set supporting force value, and a gas in the bag supported by the bag supporting device is sucked. An air intake device that stops inhaling when the gas pressure in the bag reaches a set gas pressure value or less, and the gas pressure in the bag reaches the set gas pressure value or less due to the suction of the air suction device. A replacement gas loading device for loading the replacement gas into the bag body, and a bag sealing device for sealing the opening of the bag after the replacement gas is loaded by the replacement gas loading device, Vacuum sealing device for bags. 2. A bag supporting device for supporting an opening of a bag made of a non-breathable material with a supporting force within a range of a set supporting force, and a bag supported by the bag supporting device. An intake nozzle that inhales gas in the bag, and an intake control device that automatically stops the intake by the intake nozzle when the gas pressure in the bag reaches a set gas pressure value or less by the intake of the intake nozzle. A replacement gas loading nozzle for loading a replacement gas into the bag when the gas pressure in the bag reaches a set gas pressure value or less due to the suction of the suction nozzle, and the inside of the bag by suction of the suction nozzle. When the gas pressure reaches the set gas pressure value or less, the supply of the replacement gas to the replacement gas loading nozzle is started, and the replacement gas is automatically loaded after the replacement gas loading nozzle loads the set amount of the replacement gas. Stop A replacement gas loading control device, and an inner position of the bag body in a state where each of the distal ends of the intake nozzle and the replacement gas loading nozzle is supported by the bag body support device, and an outer side of the bag body from the same internal position. A nozzle advancing and retreating device for reciprocating between a retreating position retreated toward and a bag support device when the intake nozzle and the replacement gas loading nozzle are retreated to the retreating position by the nozzle reciprocating device. And a heat sealing device for sealing the opening of the bag in a state of being supported by the bag. 3. The pressure reducing sealing device for a bag according to claim 2, wherein the suction nozzle communicates with a vacuum source via a suction passage and a suction passage opening / closing valve, and the suction control device controls the suction nozzle. At the start of the intake from the bag, the air intake opening / closing valve is initially set to open, and when the gas pressure in the bag reaches a set gas pressure value or less by the intake of the intake nozzle, the intake passage is opened. An intake path opening / closing valve operation control device that closes the opening / closing valve to automatically stop the intake by the intake nozzle, wherein the replacement gas loading nozzle opens and closes the replacement gas supply path and the replacement gas supply path to the replacement gas source; The replacement gas charging control device communicates via a valve, and when the gas pressure in the bag body reaches a set gas pressure value or less by the suction of the suction nozzle, opens the replacement gas supply path opening / closing valve. , After the set amount of the replacement gas is loaded by the replacement gas loading nozzle, the replacement gas supply path opening / closing valve is closed to automatically stop the replacement gas loading by the replacement gas loading nozzle. A pressure reducing sealing device for a bag, comprising a road opening / closing valve operation control device. 4. The vacuum-sealing device for a bag according to claim 2, wherein the nozzle advancing and retreating device includes a nozzle support means for supporting the intake nozzle and the replacement gas charging nozzle, and a nozzle support means for supporting the nozzle. Nozzle guide means for guiding the suction nozzle and the replacement gas loading nozzle in the forward and backward movement directions of the nozzle, and respective tips of the suction nozzle and the replacement gas loading nozzle when the suction nozzle starts sucking air from the inside of the bag body. Is advanced to the inside position of the bag body in a state supported by the bag body supporting device, and after the replacement gas is loaded by the replacement gas loading nozzle, from the inside position to the outside of the bag body with respect to the same bag body. Nozzle reciprocating movement control for moving the nozzle support means forward and backward together with the suction nozzle and the replacement gas loading nozzle so as to relatively retreat. And a vacuum sealing device for bags. 5. The vacuum sealing device for a bag according to claim 1, wherein the bag supporting device is capable of laterally moving in a direction of approaching and separating from each other, and is engaged with an opening of the bag. A pair of bag support members that open and support the opening flat by the support force in the direction away from each other, and the support force of the same pair of bag support members is within a set support force value range. And a bag supporting force automatic adjusting device for automatically adjusting to maintain the pressure.