CN103832633B - A kind of flexible packing products leak detection method and device - Google Patents

A kind of flexible packing products leak detection method and device Download PDF

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Publication number
CN103832633B
CN103832633B CN201410075314.8A CN201410075314A CN103832633B CN 103832633 B CN103832633 B CN 103832633B CN 201410075314 A CN201410075314 A CN 201410075314A CN 103832633 B CN103832633 B CN 103832633B
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flexible packing
packing products
sensing chamber
guide rod
sealed door
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CN103832633A (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 food packing machine field, particularly relate to a kind of flexible packing products leak detection method and device.This flexible packing products leak detection method, comprises the steps: a, flexible packing products is put into a sensing chamber; B, sensing chamber is bled and make sensing chamber formed negative pressure; C, judge whether flexible packing products leaks gas, and whether heaves as basis for estimation using flexible packing products, rise because the air in gastight flexible packing products then can be splashed and heave, and the air in the flexible packing products of gas leakage can be pumped and cannot expand and heave.This flexible packing products leak detection method, it is convenient to implement, and detects accurate, reliable; The present invention also provides a kind of and adopts mechanical automation to detect, and accurately and efficiency is high, saves cost flexible packing products gas leak detection device.

Description

A kind of flexible packing products leak detection method and device
Technical field:
The invention belongs to food packing machine field, particularly relate to a kind of flexible packing products leak detection method and device.
Background technology
Flexible packaging generally refers to that paper using, aluminium foil, fiber, plastic sheeting and the bag made by their compound, box, cover, encapsulating etc. are for packing preservation product.Such as in flexible packaging food and medicine, whether the leak gas sealing of i.e. flexible packaging of flexible packaging directly affects food and medicine storage life, is especially placed with deoxidizer etc. in some food flexible packings as food fresh keeping material, once flexible packaging gas leakage, deoxidizer will lose efficacy, and food is apt to deteriorate.The device whether some detection flexible packing products leak gas has been there is in prior art, disclosed in Chinese invention patent application bulletin instructions CN103057761A " a kind of guiding pick-up unit of gas flushing pouch and method ", it can carry out automatic leakage air detection to the independent inflatable packaging bag of small-sized bakery.But accuracy is difficult to ensure, in addition, the guiding pick-up unit of this gas flushing pouch and method can only detect the flexible packing products being filled with nitrogen, cannot detect without the need to the flexible packing products inflated such as moon cake etc.
Summary of the invention
Fundamental purpose of the present invention is that providing a kind of flexible packing products to leak gas detects forwarding method, and it implements convenient, detects accurate, reliable.
State object to be achieved by the following technical solution:
A kind of flexible packing products leak detection method, is characterized in that, comprise the steps:
A, flexible packing products is put into a sensing chamber;
B, sensing chamber is bled and make sensing chamber formed negative pressure;
C, judge that whether flexible packing products leaks gas, and whether heaves as basis for estimation using flexible packing products, heaves because the air in gastight flexible packing products then can expand, and the air in the flexible packing products of gas leakage can be pumped and cannot expand and heave.
Above technical scheme is 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 the sealed door for opening or close these import and export;
In stepb, the air extractor that a pair sensing chamber carries out bleeding is provided;
In step c, provide one in pumping process, whether heave to the flexible packing products in sensing chamber the sensor device detected.
Whether another object of the present invention is to provide a kind of flexible packing products gas leak detection device, and its structure is simple, detects accurately, can leak gas detect the flexible packing products without 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 make sensing chamber formed negative pressure air extractor and whether the flexible packing products in sensing chamber is heaved to the sensor device detected in pumping process, bleeding in detection, negative pressure is produced in sensing chamber, air in gastight flexible packing products then can expand and heave, and the 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 is 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 the sealed door for opening or close 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 and 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, the upper end of induction guide rod is stretched out outside box body, on the roof that sensor is arranged on box body and the top being positioned at the upper end of induction guide rod is to detect the situation of induction guide rod, and sensor block is fixed on the lower end responding to guide rod; Before sensing chamber bleeds, induction guide rod is in initial position, and the distance bottom sensor block to sensing chamber equals or slightly larger than the height of flexible packing products; When sensing chamber bleeds, sensor block and induction guide rod jack-up make induction guide rod be in trigger position and be detected by sensor because heaving by gastight flexible packing products, and the flexible packing products of gas leakage jack-up induction guide rod so that induction guide rod cannot be 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, to make induction guide rod be in initial position on the roof that positive stop is supported on box body.
The roof of this box body is provided with and slips through for induction guide rod and make induction guide rod and box body form the guide holder be tightly connected, and when being provided with O-ring seal between sealed door and box body to make sealed door close, sensing chamber forms confined space.
This sensor is proximity switch, and when induction guide rod is in trigger position, upper end and the sensor of induction guide rod are touched.
This flexible packing products gas leak detection device also comprises one for carrying out the alarm reminded when the flexible packing products of gas leakage being detected.Such as, when the flexible packing products of gas leakage being detected, namely this flexible packing products poor sealing is substandard product, and alarm will be sounded; When detecting that flexible packing products is air tight, namely this flexible packing products good airproof performance is specification product, and alarm 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, and translational drive mechanism drives 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 backboard and an internal stent, internal stent is fixed with a front apron, the distance that backboard and front apron can be inserted for flexible packing products along the translation direction of sealed door at a distance of one section, flexible packing products is placed between backboard and front apron, when opening sealed door, flexible packing products pulls out sensing chamber by front apron, and during closedown sealed door, flexible packing products pushes sensing chamber by backboard.
This flexible packing products gas leak detection device also comprises a frame and is located at the conveying device for carrying flexible packing products in frame, this conveying device comprises conveying belt, box body to be located in frame and be positioned at the side of conveying belt and the import and export of box body towards conveying belt, sealed door, backboard and front apron be all positioned at the top of conveying belt and the translation direction of sealed door perpendicular to the throughput direction of conveying device, after sealed door is opened, conveying device can make flexible packing products rest between backboard and front apron; During detection, first open sealed door, then flexible packing products transports and rests between backboard and front apron by conveying device, now close sealed door, by backboard, flexible packing products is pushed sensing chamber, after detection completes, open sealed door, by front apron flexible packing products pulled out sensing chamber and this flexible packing products is got back on conveying belt again by belt conveyance.
Above technical scheme can following selection one use, or combination in any uses.
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, comprising can the sensing chamber of accommodating flexible packing products, sensing chamber is bled and makes sensing chamber form the air extractor of negative pressure and whether the flexible packing products in sensing chamber be heaved to the sensor device detected in pumping process, bleeding in detection, negative pressure is produced in sensing chamber, air in gastight flexible packing products then can expand and heave, and the 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, its structure is simple, detect accurately, not only whether can leak gas to the flexible packing products inflated and detect, especially whether can leak gas to the flexible packing products without inflation and detect, such as flexible packaging moon cake, in packaging process, put into deoxidizer and be not filled with nitrogen, during detection, bleeding in testing process, during the air tight i.e. good airproof performance of flexible packaging moon cake, in the packaging bag of moon cake, residual air can expand and packaging bag be heaved, and it is just contrary, when 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, undertaken detecting by sensor device and can show whether the packaging bag of this flexible packaging moon cake leaks gas, employing mechanical automation detects, accurately and efficiency is high, save cost,
(3) this sensor device comprises sensor block, induction guide rod and sensor, and its structure is simple, and it is convenient to implement;
(4) this box body is provided with an outside support, guided in translation mechanism and translational drive mechanism is provided with between sealed door and outside support, translational drive mechanism drives sealed door along guided in translation mechanism kinematic to open or to close this import and export, unlatching or the closedown of sealed door adopt robotization, without the need to manual operation, improve detection efficiency, save cost;
(5) inner side of this sealed door is fixed with a backboard and an internal stent, internal stent is fixed with a front apron, the distance that backboard and front apron can be inserted for flexible packing products along the translation direction of sealed door at a distance of one section, flexible packing products is placed between backboard and front apron, when opening sealed door, flexible packing products pulls out sensing chamber by front apron, during closedown sealed door, flexible packing products pushes sensing chamber by backboard, whole testing process, adopt full-automatic, the turnover sensing chamber of flexible packing products is without the need to 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 conveying device for carrying flexible packing products in frame, this conveying device comprises conveying belt, box body to be located in frame and be positioned at the side of conveying belt and the import and export of box body towards conveying belt, sealed door, backboard and front apron be all positioned at the top of conveying belt and the translation direction of sealed door perpendicular to the throughput direction of conveying device, after sealed door is opened, conveying device can make flexible packing products rest between backboard and front apron, flexible packing products to be detected by conveying device transport one by one through box body import and export and between backboard and front apron, during detection, conveying device can make some or all of flexible packing products rest on one by one between backboard and front apron, after push sensing chamber by backboard and detect, when inspecting by random samples, setting conveying device makes certain a part of flexible packing products rest between backboard and front apron, and another part is directly between backboard and front apron, its structure is simple, 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 is 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 is principle of work schematic diagram of the present invention, responds to guide rod and is in initial position, respond to guide rod and be in trigger position in Fig. 8 in Fig. 7;
Fig. 9 and Figure 10 is the schematic perspective view of two different angles of band organic frame of the present invention and conveying device;
Figure 11 is the sectional structure schematic diagram of band organic frame of the present invention and conveying device.
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, sensing chamber is bled and make sensing chamber formed negative pressure;
C, judge that whether flexible packing products leaks gas, and whether heaves as basis for estimation using flexible packing products, heaves because the air in gastight flexible packing products then can expand, and the air in the flexible packing products of gas leakage can be pumped and cannot expand and heave.
See 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 the sealed door for opening or close these import and export;
In stepb, the air extractor that a pair sensing chamber carries out bleeding is provided;
In step c, provide one in pumping process, whether heave to the flexible packing products in sensing chamber the sensor device detected.
A kind of flexible packing products gas leak detection device as shown in Figures 1 to 8, comprise can accommodating flexible packing products sensing chamber A, sensing chamber A is bled and make sensing chamber A formed negative pressure air extractor and whether the flexible packing products in sensing chamber A is heaved to the sensor device detected in pumping process, bleeding in detection, negative pressure is produced in sensing chamber, air in gastight flexible packing products then can expand and heave, and the 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:
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 close 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 and 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, the upper end of induction guide rod 3 is stretched out outside box body 1, on the roof 13 that sensor 4 is arranged on box body and the top being positioned at the upper end of induction guide rod 3 is to detect the situation responding to guide rod 3, such as detect induction guide rod 3 and be 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 sensing chamber A bleeds, induction guide rod 3 is in initial position, bottom sensor block 2 to sensing chamber, the distance of 14 equals or slightly larger than the height of flexible packing products, bottom certain sensor block 2 to sensing chamber, the distance of 14 is the flexible packing products to adapt to differing heights that can regulate;
When sensing chamber A bleeds, sensor block 2 and induction guide rod 3 jack-up make induction guide rod 3 be in trigger position and are detected by sensor 4 because heaving by gastight flexible packing products, and the flexible packing products of gas leakage jack-up induction guide rod 3 so that induction guide rod 3 cannot be 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 with induction guide rod 3, to make induction guide rod 3 be in initial position on the roof 13 that positive stop 31 is supported on box body, by the position of up-down adjustment positive stop with the distance regulating bottom sensor block 2 to sensing chamber 14.
The roof 13 of this box body is provided with and slips through for responding to guide rod 3 and make induction guide rod 3 and box body 1 form the guide holder 15 be tightly connected, and when being provided with O-ring seal 16 between sealed door 12 and box body 1 to make sealed door 12 close, sensing chamber A forms confined space.When sensing chamber is confined space, air extractor can be evacuated to sensing chamber and make sensing chamber form vacuum chamber.Sensing chamber also can be unsealed.
This air extractor can comprise bleeding chews (not shown), and this is bled to chew and is located on box body and is communicated with sensing chamber.
This sensor 4 is proximity switch, and when induction guide rod 3 is in trigger position, upper end and the sensor 4 of induction guide rod 3 are touched.Certainly, sensor 4 may also be optoelectronic switch, microswitch etc.
This flexible packing products gas leak detection device also comprises one for carrying out the alarm (not shown) of reminding when the flexible packing products of gas leakage being detected.Such as, when the flexible packing products of gas leakage being detected, namely this flexible packing products poor sealing is substandard product, and alarm will be sounded; When detecting that flexible packing products is air tight, namely this flexible packing products good airproof performance is specification product, and alarm can not be sounded.
Box body 1 is provided with an outside support 17, is provided with guided in translation mechanism and translational drive mechanism between sealed door 2 and outside support 17, and translational drive mechanism drives sealed door along guided in translation mechanism kinematic to open or to close this import and export 11.Gantry rack-like of outside support 17 in level, it comprises respectively from the outward extending left plate 171 in the both sides that box body is relative and right plate 172 and the intermediate plate 173 that is connected between left plate 171 outer end and right plate 172 outer end, and the length direction of left plate 171 and right plate 172 is parallel to the translation direction of sealed door.Guided in translation mechanism comprises the slide bar 174 that two pass intermediate plate 173, and intermediate plate 173 is provided with the guide pin bushing coordinated 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 backboard 121 and an internal stent 18, internal stent 18 is fixed with a front apron 122, the distance that backboard 121 and front apron 122 can be inserted for flexible packing products along the translation direction of sealed door 12 at a distance of one section, flexible packing products is placed between backboard 121 and front apron 122, when opening sealed door 12, flexible packing products pulls out sensing chamber A by front apron 122, and during closedown sealed door 12, flexible packing products pushes sensing chamber A by backboard 121.Internal stent 18 comprises two parallel side levers 181 of being separated by, 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 sensing chamber A by backboard 121 and is placed in the below of sensor block 2, and before sensing chamber A bleeds, induction guide rod is in initial position;
Sensing chamber in pumping process, as shown in Figure 8, when flexible packing products to be detected is air tight can because heaving jack-up sensor block and induction guide rod, finally make the upper end of induction guide rod touch proximity switch and detect by proximity switch; When flexible packing products to be detected is gas leakage, then 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, the conveying device for carrying flexible packing products that this flexible packing products gas leak detection device also comprises a frame 5 and is located in frame 5, this conveying device comprises conveying belt 6, box body 1 to be located in frame 5 and be positioned at the side of conveying belt 6 and the import and export 11 of box body towards conveying belt 6, sealed door 12, backboard 121 and front apron 122 be all positioned at the top of conveying belt 6 and the translation direction of sealed door 12 perpendicular to the throughput direction of conveying device, after sealed door 12 is opened, conveying device can make flexible packing products rest between backboard 121 and front apron 122,
During detection, first open sealed door 12, then flexible packing products transports and rests between backboard 121 and front apron 122 by conveying device, now close sealed door 12, by backboard 121, flexible packing products is pushed sensing chamber A, after detection completes, open sealed door 12, by front apron 122 flexible packing products pulled out sensing chamber A and this flexible packing products is got back on conveying belt 6 and transported by conveying belt 6 again.
The flexible packing products gas leak detection device of the application can also comprise " a kind of deoxidizer of the induction installation and application thereof that detect magnetic conductive metal detects machine " (application number is 201420063971.6) that the applicant applied on February 12nd, 2014 to State Intellectual Property Office, during work, first check the situation of deoxidier in food pack, reject not containing the packaging for foodstuff of deoxidizer, allow the packaging for foodstuff containing qualified deoxidizer enter gas leak detection device.

Claims (6)

1. a flexible packing products gas leak detection device, it is characterized in that: comprising can the sensing chamber (A) of accommodating flexible packing products, sensing chamber (A) is bled and makes sensing chamber (A) form the air extractor of negative pressure and whether heave to the flexible packing products in sensing chamber (A) sensor device detected in pumping process, bleeding in detection, negative pressure is produced in sensing chamber, air in gastight flexible packing products then can expand and heave, and the air in the flexible packing products of gas leakage can be taken away by air extractor and cannot expand and heave, whether sensor device detects flexible packing products and heaves,
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 close 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 and 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), box body (1) is stretched out outward in the upper end of induction guide rod (3), sensor (4) is arranged on the upper and top being positioned at the upper end of induction guide rod (3) of the roof (13) of box body to detect the situation responding to 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 bottom sensor block (2) to sensing chamber, the distance of (14) equals or slightly larger than the height of flexible packing products;
When sensing chamber (A) bleeds, gastight flexible packing products because heaving by sensor block (2) and induction guide rod (3) jack-up make induction guide rod (3) be in trigger position and by sensor (4) detect, and gas leakage flexible packing products because not heaving cannot jack-up induction guide rod (3) so that induction guide rod (3) be in initial position.
2. a kind of flexible packing products gas leak detection device according to claim 1, is characterized in that:
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), to make induction guide rod (3) be in initial position on the roof (13) that positive stop (31) is supported on box body;
The roof (13) of this box body is provided with and slips through for responding to guide rod (3) and make induction guide rod (3) and box body (1) form the guide holder (15) be tightly connected, and when being provided with O-ring seal (16) between sealed door (12) and box body (1) to make sealed door (12) close, sensing chamber (A) forms confined space.
3. a kind of flexible packing products gas leak detection device according to claim 1 and 2, it is characterized in that: this sensor (4) is proximity switch, when induction guide rod (3) is in trigger position, upper end and the sensor (4) of induction guide rod (3) are touched.
4. a kind of flexible packing products gas leak detection device according to claim 1 and 2, is characterized in that: this flexible packing products gas leak detection device also comprises one for carrying out the alarm reminded when the flexible packing products of gas leakage being detected.
5. a kind of flexible packing products gas leak detection device according to claim 1 and 2, is characterized in that:
This box body (1) is provided with an outside support (17), be provided with guided in translation mechanism and translational drive mechanism between sealed door (12) and outside support (17), translational drive mechanism drives 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 backboard (121) and an internal stent (18), internal stent (18) is fixed with a front apron (122), the distance that backboard (121) and front apron (122) can be inserted for flexible packing products along the translation direction of sealed door (12) at a distance of one section, flexible packing products is placed between backboard (121) and front apron (122), when opening sealed door (12), flexible packing products pulls out sensing chamber (A) by front apron (122), during closedown sealed door (12), flexible packing products pushes sensing chamber (A) by backboard (121).
6. a kind of flexible packing products gas leak detection device according to claim 5, is characterized in that:
This flexible packing products gas leak detection device also comprises a frame (5) and is located at the conveying device for carrying flexible packing products in frame (5), this conveying device comprises conveying belt (6), box body (1) be located at frame (5) upper and be positioned at the side of conveying belt (6) and the import and export of box body (11) towards conveying belt (6), sealed door (12), backboard (121) and front apron (122) be all positioned at the top of conveying belt (6) and the translation direction of sealed door (12) perpendicular to the throughput direction of conveying device, after sealed door (12) is opened, conveying device can make flexible packing products rest between backboard (121) and front apron (122),
During detection, first open sealed door (12), then flexible packing products transports and rests between backboard (121) and front apron (122) by conveying device, now close sealed door (12), by backboard (121), flexible packing products is pushed sensing chamber (A), after detection completes, open sealed door (12), by front apron (122) flexible packing products pulled out sensing chamber (A) and this flexible packing products is got back on conveying belt (6) and transported by conveying belt (6) again.
CN201410075314.8A 2014-03-03 2014-03-03 A kind of flexible packing products leak detection method and device Active CN103832633B (en)

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