CN103832633A - Method and device for detecting air leakage of soft-package products - Google Patents

Method and device for detecting air leakage of soft-package products Download PDF

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Publication number
CN103832633A
CN103832633A CN201410075314.8A CN201410075314A CN103832633A CN 103832633 A CN103832633 A CN 103832633A CN 201410075314 A CN201410075314 A CN 201410075314A CN 103832633 A CN103832633 A CN 103832633A
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flexible packing
packing products
sensing chamber
guide rod
sealed door
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CN103832633B (en
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陈丽珠
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Nantong Tangrun Machinery Co., Ltd
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ZHONGSHAN AOSI FINE MACHINERY TECHNOLOGY Co Ltd
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Abstract

The invention belongs to the field of food packing machines, and particularly relates to a method and a device for detecting air leakage of soft-package products. The method includes: a, placing a soft-package product into a detecting chamber; b, vacuuming the detecting chamber to form negative pressure; c, due to the fact that the soft-package product free of air leakage expands and plumps due to air inside, and the soft-package product leaking the air cannot plump since air inside is vacuumed, judging whether the soft-package product leaks air or not according to whether the soft-package product plumps or not. The method for detecting air leakage of the soft-package products is convenient to implement and accurate and reliable in detection. The device for detecting air leakage of the soft-package products runs mechanically and automatically, and is accurate and efficient in detection and capable of saving cost.

Description

A kind of flexible packing products leak detection method and device
Technical field:
The invention belongs to food packing machine field, relate in particular to a kind of flexible packing products leak detection method and device.
Background technology
Flexible packaging generally refers to paper using, aluminium foil, fiber, plastic sheeting and their compound made bag, box, overlaps, seals etc. for packing preservation product.For example, in flexible packaging food and medicine, whether flexible packaging leaks gas is that the leak tightness of flexible packaging directly affects food and medicine Keeping life, especially in some food flexible packings, is placed with deoxidation reagent etc. as food fresh keeping material, once flexible packaging gas leakage, deoxidation reagent will lose efficacy, and food is apt to deteriorate.In prior art, occur that some detect the device whether flexible packing products leaks gas, as Chinese invention patent application bulletin specification sheets CN103057761A disclosed " a kind of guiding detecting device and method of gas flushing pouch ", it can carry out automatic leakage air detection to the independent gas flushing pouch of small-sized bakery.But accuracy is difficult to assurance, and in addition, the guiding detecting device of this gas flushing pouch and method can only detect the flexible packing products that is filled with nitrogen, cannot detect without the flexible packing products of inflation such as moon cake etc.
Summary of the invention
Main purpose of the present invention is to provide a kind of flexible packing products gas leakage to detect forwarding method, and it implements convenient, detects accurate, reliable.
Stating object is achieved by the following technical solution:
A kind of flexible packing products leak detection method, is characterized in that, comprises the steps:
A, flexible packing products is put into a sensing chamber;
B, to sensing chamber bleed and make sensing chamber form negative pressure;
C, judge whether flexible packing products leaks gas, and whether heaves as basis for estimation using flexible packing products, because the air in vapor tight flexible packing products can be splashed to rise and heaved, and air in the flexible packing products of gas leakage can be pumped and cannot expand and heave.
Above technical scheme can be further improved by following measures:
In step a, this sensing chamber is formed at the inside of a box body, and the sidepiece of this box body is provided with the import and export that are communicated with sensing chamber and for opening or close the sealed door of these import and export;
In step b, the air extractor that provides a pair of sensing chamber to bleed;
In step c, provide one in pumping process, whether the flexible packing products in sensing chamber to be heaved to the sensor device detecting.
Whether another object of the present invention is to provide a kind of flexible packing products gas leak detection device, and it is simple in structure, detects accurately, can to leaking gas and detect without the flexible packing products of inflation.
Above-mentioned purpose is achieved by the following technical solution:
A kind of flexible packing products gas leak detection device, it is characterized in that: comprise can accommodating flexible packing products sensing chamber, sensing chamber is bled and makes sensing chamber form the air extractor of negative pressure and in pumping process, whether the flexible packing products in sensing chamber be heaved to the sensor device detecting, bleed detect in, in sensing chamber, produce negative pressure, air in vapor tight flexible packing products can be splashed and risen and heave, and air in the flexible packing products of gas leakage can be taken away by air extractor and cannot expand and heave, sensor device detects above-mentioned signal.
Above technical scheme can be further improved by following measures:
This sensing chamber is formed at the inside of a box body, and the sidepiece of this box body is provided with the import and export that are communicated with sensing chamber and for opening or close the sealed door of these import and export.
This sensor device comprises sensor block, induction guide rod and sensor, induction guide rod is through the roof of box body upper and lower slippage an initial position and a trigger position, trigger position is higher than initial position, the lower end of induction guide rod is stretched in sensing chamber, stretch out outside box body the upper end of induction guide rod, installation of sensors on the roof of box body and be positioned at induction guide rod upper end above with detect induction guide rod situation, sensor block be fixed on induction guide rod lower end; Before sensing chamber bleeds, induction guide rod is in initial position, and sensor block equals or be slightly larger than the height of flexible packing products to the distance of sensing chamber bottom; When sensing chamber bleeds, vapor tight flexible packing products makes to respond to guide rod by sensor block and induction guide rod jack-up and detects in trigger position and by sensor because heaving, and the flexible packing products of gas leakage cannot jack-up induction guide rod so that respond to guide rod in initial position because not heaving.
The upper end of this induction guide rod is provided with a positive stop, under the deadweight of sensor block and induction guide rod, positive stop be supported on the roof of box body so that induction guide rod in initial position.
The roof of this box body is provided with for induction guide rod slippage and pass and make to respond to guide rod and box body forms the guide holder being tightly connected, and is provided with seal ring so that sealed door sensing chamber's formation confined space while closing between sealed door and box body.
This sensor is approach switch, and induction guide rod is in the time of trigger position, and upper end and the sensor of induction guide rod are touched.
This flexible packing products gas leak detection device also comprises an annunciator for reminding in the time the flexible packing products of gas leakage being detected.For example, in the time the flexible packing products of gas leakage being detected, this flexible packing products poor sealing is off-grade, and annunciator will be sounded; In the time detecting that flexible packing products is air tight, this flexible packing products good airproof performance is acceptable product, and annunciator can not be sounded.
This box body is provided with an outside support, is provided with guided in translation mechanism and translational drive mechanism between sealed door and outside support, translational drive mechanism drive sealed door along guided in translation mechanism kinematic to open or to close this import and export.
The inner side of sealed door is fixed with a back shield and an internal stent, in internal stent, be fixed with a front apron, back shield and front apron are along the translation direction one section of distance that can insert for flexible packing products apart of sealed door, flexible packing products is placed between back shield and front apron, while opening sealed door, flexible packing products pulls out sensing chamber by front apron, and while closing sealed door, flexible packing products pushes sensing chamber by back shield.
This flexible packing products gas leak detection device also comprises a frame and is located at the feedway for delivery of flexible packing products in frame, this feedway comprises load-transfer device, box body be located in frame and be positioned at a side of load-transfer device and the import and export of box body towards load-transfer device, sealed door, back shield and front apron are all positioned at the top of load-transfer device and the translation direction of the sealed door throughput direction perpendicular to feedway, after sealed door is opened, feedway can make flexible packing products rest between back shield and front apron; When detection, first open sealed door, then feedway transports flexible packing products rest between back shield and front apron, now close sealed door, by back shield, flexible packing products is pushed to sensing chamber, after detection completes, open sealed door, by front apron, flexible packing products is pulled out to sensing chamber and this flexible packing products is got back on load-transfer device again by belt conveyance.
Above technical scheme can following selection one be used, or combination in any is used.
Tool of the present invention has the following advantages:
(1) this flexible packing products leak detection method, it is convenient to implement, and detects accurate, reliable;
(2) this flexible packing products gas leak detection device, comprise can accommodating flexible packing products sensing chamber, sensing chamber is bled and makes sensing chamber form the air extractor of negative pressure and in pumping process, whether the flexible packing products in sensing chamber be heaved to the sensor device detecting, bleed detect in, in sensing chamber, produce negative pressure, air in vapor tight flexible packing products can be splashed and risen and heave, and air in the flexible packing products of gas leakage can be taken away by air extractor and cannot expand and heave, sensor device detects above-mentioned signal, it is simple in structure, detect accurately, not only can whether the flexible packing products of having inflated be leaked gas and be detected, especially can to whether leaking gas and detect without the flexible packing products of inflation, for example flexible packaging moon cake, in packaging process, put into deoxidation reagent and be not filled with nitrogen, when detection, bleeding in testing process, flexible packaging moon cake is air tight while being good airproof performance, in the packaging bag of moon cake, residual air can expand and packaging bag is heaved, and it is just contrary, in the time that flexible packaging moon cake leaks gas, residual air in packaging bag can together be taken away together with the air in sensing chamber by air extractor and cannot heave, detect and can show whether the packaging bag of this flexible packaging moon cake leaks gas by sensor device, employing mechanical automation detects, accurately and efficiency high, save cost,
(3) this sensor device comprises sensor block, induction guide rod and sensor, and it is simple in structure, and it is convenient to implement;
(4) this box body is provided with an outside support, between sealed door and outside support, be provided with guided in translation mechanism and translational drive mechanism, translational drive mechanism drive sealed door along guided in translation mechanism kinematic to open or to close this import and export, the unlatching of sealed door or close employing automation, without manual operation, improve detection efficiency, save cost;
(5) inner side of this sealed door is fixed with a back shield and an internal stent, in internal stent, be fixed with a front apron, back shield and front apron are along the translation direction one section of distance that can insert for flexible packing products apart of sealed door, flexible packing products is placed between back shield and front apron, while opening sealed door, flexible packing products pulls out sensing chamber by front apron, while closing sealed door, flexible packing products pushes sensing chamber by back shield, whole testing process, adopt full-automatic, the turnover sensing chamber of flexible packing products is without manual operation, safe and reliable, improve detection efficiency, save cost,
(6) this flexible packing products gas leak detection device also comprises a frame and is located at the feedway for delivery of flexible packing products in frame, this feedway comprises load-transfer device, box body be located in frame and be positioned at a side of load-transfer device and the import and export of box body towards load-transfer device, sealed door, back shield and front apron are all positioned at the top of load-transfer device and the translation direction of the sealed door throughput direction perpendicular to feedway, after sealed door is opened, feedway can make flexible packing products rest between back shield and front apron, flexible packing products to be detected is transported and is passed through one by one the import and export of box body and between back shield and front apron by feedway, when detection, feedway can make some or all of flexible packing products rest on one by one between back shield and front apron, after push sensing chamber by back shield and detect, in the time of sampling observation, setting feedway makes certain a part of flexible packing products rest between back shield and front apron, and another part is directly through between back shield and front apron, it is simple in structure, effect is high.
Accompanying drawing explanation
Fig. 1 is schematic perspective view of the present invention, and wherein sealed door is in opening;
Fig. 2 and Fig. 3 are the perspective exploded view of two different angles of the present invention;
Fig. 4 is schematic perspective view of the present invention, and wherein sealed door is in closed condition;
Fig. 5 is sectional structure schematic diagram of the present invention, and wherein sealed door is in opening;
Fig. 6 is sectional structure schematic diagram of the present invention, and wherein sealed door is in closed condition;
Fig. 7 and Fig. 8 are principle of work schematic diagram of the present invention, respond to guide rod in initial position in Fig. 7, respond to guide rod in trigger position in Fig. 8;
Fig. 9 and Figure 10 are the schematic perspective view of two different angles of band organic frame of the present invention and feedway;
Figure 11 is the sectional structure schematic diagram of band organic frame of the present invention and feedway.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
A kind of flexible packing products leak detection method, comprises the steps:
A, flexible packing products is put into a sensing chamber;
B, to sensing chamber bleed and make sensing chamber form negative pressure;
C, judge whether flexible packing products leaks gas, and whether heaves as basis for estimation using flexible packing products, because the air in vapor tight flexible packing products can be splashed to rise and heaved, and air in the flexible packing products of gas leakage can be pumped and cannot expand and heave.
Referring to shown in Fig. 1 to Fig. 8, in step a, this sensing chamber is formed at the inside of a box body, and the sidepiece of this box body is provided with the import and export that are communicated with sensing chamber and for opening or close the sealed door of these import and export;
In step b, the air extractor that provides a pair of sensing chamber to bleed;
In step c, provide one in pumping process, whether the flexible packing products in sensing chamber to be heaved to the sensor device detecting.
A kind of flexible packing products gas leak detection device as shown in Figures 1 to 8, comprise can accommodating flexible packing products the A of sensing chamber, the A of sensing chamber is bled and makes the A of sensing chamber form the air extractor of negative pressure and in pumping process, whether the flexible packing products in the A of sensing chamber be heaved to the sensor device detecting, bleed detect in, in sensing chamber, produce negative pressure, air in vapor tight flexible packing products can be splashed and risen and heave, and air in the flexible packing products of gas leakage can be taken away by air extractor and cannot expand and heave, sensor device detects above-mentioned signal; Particularly:
The A of this sensing chamber is formed at the inside of a box body 1, and the sidepiece of this box body 1 is provided with the import and export 11 that are communicated with the A of sensing chamber and for opening or close the sealed door 12 of these import and export 11.
This sensor device comprises sensor block 2, induction guide rod 3 and sensor 4, induction guide rod 3 is through the roof 13 of box body upper and lower slippage an initial position and a trigger position, trigger position is higher than initial position, the lower end of induction guide rod 3 is stretched in the A of sensing chamber, stretch out outside box body 1 upper end of induction guide rod 3, sensor 4 be arranged on the roof 13 of box body and the top of upper end that is positioned at induction guide rod 3 to detect the situation of induction guide rod 3, for example detect induction guide rod 3 in initial position or trigger position, sensor block 2 is fixed on the lower end of induction guide rod 3; Sensor block is in the form of annular discs;
Before the A of sensing chamber bleeds, induction guide rod 3 is in initial position, sensor block 2 equals or is slightly larger than the height of flexible packing products to the distance of sensing chamber bottom 14, certainly sensor block 2 to 14 distance bottom sensing chamber be can regulate to adapt to the flexible packing products of differing heights;
When the A of sensing chamber bleeds, vapor tight flexible packing products is responded to guide rod 3 by sensor block 2 and induction guide rod 3 jack-up making and is detected in trigger position and by sensor 4 because heaving, and the flexible packing products of gas leakage cannot jack-up induction guide rod 3 so that respond to guide rod 3 in initial position because not heaving.
The upper end of this induction guide rod 3 is provided with a positive stop 31, under the deadweight of sensor block 2 and induction guide rod 3, positive stop 31 be supported on the roof 13 of box body so that induction guide rod 3 in initial position, the position by up-down adjustment positive stop is to regulate the distance of sensor block 2 to sensing chamber bottom 14.
The roof 13 of this box body is provided with and pass and make to respond to guide rod 3 for induction guide rod 3 slippages and form with box body 1 guide holder 15 being tightly connected, and is provided with seal ring 16 so that sealed door 12 A of sensing chamber formation confined space while closing between sealed door 12 and box body 1.When sensing chamber is confined space, air extractor can be evacuated and make sensing chamber form vacuum chamber sensing chamber.Sensing chamber can be also unsealed.
This air extractor can comprise bleeding chews (not shown), and this is bled to chew to be located on box body and with sensing chamber and is communicated with.
This sensor 4 is approach switch, and induction guide rod 3 is in the time of trigger position, and upper end and the sensor 4 of induction guide rod 3 are touched.Certainly also photoelectric switch, micro-switch etc. of sensor 4.
This flexible packing products gas leak detection device also comprises an annunciator (not shown) for reminding in the time the flexible packing products of gas leakage being detected.For example, in the time the flexible packing products of gas leakage being detected, this flexible packing products poor sealing is off-grade, and annunciator will be sounded; In the time detecting that flexible packing products is air tight, this flexible packing products good airproof performance is acceptable product, and annunciator can not be sounded.
Box body 1 is provided with an outside support 17, between sealed door 2 and outside support 17, is provided with guided in translation mechanism and translational drive mechanism, translational drive mechanism drive sealed door along guided in translation mechanism kinematic to open or to close this import and export 11.Outside support 17 is the portal frame shape of level, it comprise respectively from the outward extending left side board 171 in the relative both sides of box body and right side board 172 and be connected to left side board 171 outer ends and right side board 172 outer ends between intermediate plate 173, the length direction of left side board 171 and right side board 172 is parallel to the translation direction of sealed door.Guided in translation mechanism comprises two slide bars 174 through intermediate plate 173, and intermediate plate 173 is provided with the guide pin bushing coordinating with each slide bar 174.Translational drive mechanism comprises a cylinder 175, and the cylinder body of cylinder 175 is fixed on intermediate plate 173, and the piston rod of cylinder is connected with sealed door through intermediate plate.
The inner side of sealed door 12 is fixed with a back shield 121 and an internal stent 18, in internal stent 18, be fixed with a front apron 122, back shield 121 and front apron 122 are along the translation direction one section of distance that can insert for flexible packing products apart of sealed door 12, flexible packing products is placed between back shield 121 and front apron 122, while opening sealed door 12, flexible packing products pulls out the A of sensing chamber by front apron 122, and while closing sealed door 12, flexible packing products pushes the A of sensing chamber by back shield 121.Internal stent 18 comprises the two parallel side levers of being separated by 181, and one end of each side lever 181 is fixed on the inner side of sealed door, and the other end stretches out, and front apron is fixed between the other end of two side levers 181.
As shown in Figure 7, close sealed door, flexible packing products 7 to be detected pushes the A of sensing chamber by back shield 121 and is placed in the below of sensor block 2, and before the A of sensing chamber bleeds, induction guide rod is in initial position;
Sensing chamber, in pumping process, as shown in Figure 8, can, because heaving jack-up sensor block and induction guide rod, finally make the upper end of responding to guide rod touch approach switch and be detected by approach switch in the time that flexible packing products to be detected is air tight; When flexible packing products to be detected leaks gas, flexible packing products can not be heaved, and induction guide rod is positioned at initial position all the time.
As shown in Figures 9 to 11, this flexible packing products gas leak detection device also comprises a frame 5 and is located at the feedway for delivery of flexible packing products in frame 5, this feedway comprises load-transfer device 6, box body 1 be located in frame 5 and be positioned at a side of load-transfer device 6 and the import and export 11 of box body towards load-transfer device 6, sealed door 12, back shield 121 and front apron 122 are all positioned at the top of load-transfer device 6 and the translation direction of sealed door 12 throughput direction perpendicular to feedway, after sealed door 12 is opened, feedway can make flexible packing products rest between back shield 121 and front apron 122,
When detection, first open sealed door 12, then feedway transports flexible packing products rest between back shield 121 and front apron 122, now close sealed door 12, by back shield 121, flexible packing products is pushed to the A of sensing chamber, after detection completes, open sealed door 12, by front apron 122, flexible packing products is pulled out to the A of sensing chamber and this flexible packing products is got back on load-transfer device 6 and transported by load-transfer device 6 again.
The application's flexible packing products gas leak detection device can also comprise " a kind of induction installation of magnetic conductive metal and the deoxidation reagent of application detection machine thereof surveyed " (application number is 201420063971.6) that the applicant applied on February 12nd, 2014 to State Intellectual Property Office, when work, first check the situation of deoxidier in food pack, reject the not packaging for foodstuff containing deoxidation reagent, allow the packaging for foodstuff that contains qualified deoxidation reagent enter gas leak detection device.

Claims (10)

1. a flexible packing products leak detection method, is characterized in that, comprises the steps:
A, flexible packing products is put into a sensing chamber (A);
B, to sensing chamber (A) bleed and make sensing chamber (A) form negative pressure;
C, judge whether flexible packing products leaks gas, and whether heaves as basis for estimation using flexible packing products, because the air in vapor tight flexible packing products can be splashed to rise and heaved, and air in the flexible packing products of gas leakage can be pumped and cannot expand and heave.
2. a kind of flexible packing products leak detection method according to claim 1, is characterized in that:
In step a, this sensing chamber (A) is formed at the inside of a box body (1), and the sidepiece of this box body (1) is provided with the import and export (11) that are communicated with sensing chamber (A) and the sealed door (12) for opening or closing these import and export (11);
In step b, provide a pair of sensing chamber air extractor that (A) bleeds;
In step c, provide one in pumping process, whether the flexible packing products in sensing chamber (A) to be heaved to the sensor device detecting.
3. a flexible packing products gas leak detection device, it is characterized in that: comprise can accommodating flexible packing products sensing chamber (A), sensing chamber (A) is bled and makes sensing chamber (A) form the air extractor of negative pressure and in pumping process, whether the flexible packing products in sensing chamber (A) be heaved to the sensor device detecting, bleed detect in, in sensing chamber, produce negative pressure, air in vapor tight flexible packing products can be splashed and risen and heave, and air in the flexible packing products of gas leakage can be taken away by air extractor and cannot expand and heave, sensor device detects above-mentioned signal.
4. a kind of flexible packing products gas leak detection device according to claim 3, it is characterized in that: this sensing chamber (A) is formed at the inside of a box body (1), the sidepiece of this box body (1) is provided with the import and export (11) that are communicated with sensing chamber (A) and the sealed door (12) for opening or closing these import and export (11).
5. a kind of flexible packing products gas leak detection device according to claim 4, is characterized in that:
This sensor device comprises sensor block (2), induction guide rod (3) and sensor (4), induction guide rod (3) is through the roof (13) of box body upper and lower slippage an initial position and a trigger position, trigger position is higher than initial position, the lower end of induction guide rod (3) is stretched in sensing chamber (A), stretch out outside box body (1) upper end of induction guide rod (3), sensor (4) is arranged on the roof (13) of box body and goes up and be positioned at the top of the upper end of responding to guide rod (3) with the situation of detection induction guide rod (3), sensor block (2) is fixed on the lower end of induction guide rod (3),
Before sensing chamber (A) bleeds, induction guide rod (3) is in initial position, and sensor block (2) equals or be slightly larger than the height of flexible packing products to the distance of sensing chamber bottom (14);
When sensing chamber (A) bleeds, vapor tight flexible packing products is responded to guide rod (3) in trigger position and by sensor (4) detection because heaving by sensor block (2) and induction guide rod (3) jack-up making, and the flexible packing products of gas leakage cannot consequently be responded to guide rod (3) in initial position by jack-up induction guide rod (3) because not heaving.
6. a kind of flexible packing products gas leak detection device according to claim 5, is characterized in that:
The upper end of this induction guide rod (3) is provided with a positive stop (31), and under the deadweight of sensor block (2) and induction guide rod (3), positive stop (31) is supported on the roof (13) of box body above so that respond to guide rod (3) in initial position;
The roof (13) of this box body is provided with and pass and make to respond to guide rod (3) for induction guide rod (3) slippage and form with box body (1) guide holder (15) being tightly connected, and is provided with seal ring (16) so that sealed door (12) sensing chamber (A) formation confined space while closing between sealed door (12) and box body (1).
7. according to a kind of flexible packing products gas leak detection device described in claim 5 or 6, it is characterized in that: this sensor (4) is approach switch, induction guide rod (3) is in the time of trigger position, and the upper end of induction guide rod (3) and sensor (4) are touched.
8. according to a kind of flexible packing products gas leak detection device described in claim 4 or 5 or 6, it is characterized in that: this flexible packing products gas leak detection device also comprises an annunciator for reminding in the time the flexible packing products of gas leakage being detected.
9. according to a kind of flexible packing products gas leak detection device described in claim 5 or 6, it is characterized in that:
This box body (1) is provided with an outside support (17), between sealed door (2) and outside support (17), be provided with guided in translation mechanism and translational drive mechanism, translational drive mechanism drive sealed door along guided in translation mechanism kinematic to open or to close these import and export (11);
The inner side of sealed door (12) is fixed with a back shield (121) and an internal stent (18), in internal stent (18), be fixed with a front apron (122), back shield (121) and front apron (122) are along the translation direction one section of distance that can insert for flexible packing products apart of sealed door (12), flexible packing products is placed between back shield (121) and front apron (122), while opening sealed door (12), flexible packing products is by front apron (122) pull-out sensing chamber (A), while closing sealed door (12), flexible packing products pushes sensing chamber (A) by back shield (121).
10. a kind of flexible packing products gas leak detection device according to claim 9, is characterized in that:
This flexible packing products gas leak detection device also comprises a frame (5) and is located at the feedway for delivery of flexible packing products in frame (5), this feedway comprises load-transfer device (6), it is upper and be positioned at a side of load-transfer device (6) and the import and export (11) of box body towards load-transfer device (6) that box body (1) is located at frame (5), sealed door (12), back shield (121) and front apron (122) are all positioned at the top of load-transfer device (6) and the translation direction of sealed door (12) throughput direction perpendicular to feedway, after sealed door (12) is opened, feedway can make flexible packing products rest between back shield (121) and front apron (122),
When detection, first open sealed door (12), then feedway transports flexible packing products rest between back shield (121) and front apron (122), now close sealed door (12), by back shield (121), flexible packing products is pushed to sensing chamber (A), after detection completes, open sealed door (12), flexible packing products is pulled out to sensing chamber (A) and this flexible packing products is got back on load-transfer device (6) by front apron (122) and transported by load-transfer device (6) again.
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CN105258853A (en) * 2015-11-23 2016-01-20 上海精汇包装设备有限公司 Air leakage detection system of gas flushing pouch
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