阅读说明：本技术 一种连续式气调保鲜包装机及其包装方法 (A kind of continous way controlled atmosphere fresh-keeping packing machine and its packing method ) 是由 杨松夏 朱立学 张日红 张世昂 姚华平 高一华 陈昊旻 于 2019-09-30 设计创作，主要内容包括：一种连续式气调保鲜包装机及其包装方法,该包装机包括设置在机架上的传送机构、气调机构以及封切机构,容置口传送带上设置有至少4个工位,分别同步进行上料、气调、封切、下料工序,容置口工位内放置有包装容器,容置口承托机构承托在容置口包装容器下端；容置口气调机构包括气调室主体,容置口气调室主体与容置口传送带传输面弹性密封,在传送带上方形成动态密封空间,气调室主体连接有充气机构,充气机构对容置口包装容器喷射氮气,气调室主体上设有排气道,容置口排气道内壁安装有监测氧气浓度的氧传感器；动态密封空间可以有效防止工位转移带来空间缝隙从而影响气密性,氧传感器监测排出气体中的氧含量,以免包装容器中残留大量的氧气。(A kind of continous way controlled atmosphere fresh-keeping packing machine and its packing method, the packing machine includes the transport mechanism being arranged on the rack, controlled atmosphere mechanism and closing-cutting mechanism, at least four station is provided on socket conveyer belt, it is synchronous respectively to carry out feeding, controlled atmosphere, sealing, blanking procedure, packing container is placed in socket station, socket support mechanism support is in socket packing container lower end；Socket controlled atmosphere mechanism includes controlled atmosphere room main body, socket controlled atmosphere room main body and socket conveyer belt transmission surface elastic packing, it is rectangular at dynamic sealing space on a moving belt, controlled atmosphere room main body is connected with inflation mechanism, inflation mechanism sprays nitrogen to socket packing container, controlled atmosphere room main body is equipped with exhaust duct, and socket exhaust duct inner wall is equipped with the lambda sensor of monitoring oxygen concentration；Dynamic sealing space can be effectively prevented station transfer and bring spatial gaps to influence air-tightness, and the oxygen content in gas is discharged in lambda sensor monitoring, in order to avoid a large amount of oxygen is remained in packing container.)

1. a kind of continous way controlled atmosphere fresh-keeping packing machine, including be arranged on rack (1) transport mechanism (2), controlled atmosphere mechanism (3) with And closing-cutting mechanism (4), it is characterised in that:

The transport mechanism (2) includes the conveyer belt (21) and support mechanism moving up and down (22) of cycle rotation, described At least four station (9) are provided on conveyer belt (21), it is synchronous respectively to carry out feeding, controlled atmosphere, heat-sealing, blanking procedure, the station (9) it is placed with packing container (7) in, support mechanism (22) support is in the packing container (7) lower end；

The controlled atmosphere mechanism (3) includes controlled atmosphere room main body (31), and controlled atmosphere room main body (31) and the conveyer belt (21) are transmitted Surface elastic sealing, forms dynamic sealing space above conveyer belt (21), and controlled atmosphere room main body (31) is connected with inflation mechanism, inflates Nitrogen sprays to the packing container (7) in mechanism, and controlled atmosphere room main body (31) is equipped with exhaust duct (35), in the exhaust duct (35) Wall installs oxygen sensor (36)；

The closing-cutting mechanism (4) is tightly disposed in controlled atmosphere mechanism (3) side, and the two sides of closing-cutting mechanism (4) are equipped with can elasticity The elastic traction roller (63) of lifting, the lofty perch that the station (9) are not higher than to low spot of the elastic traction roller (63).

2. a kind of continous way controlled atmosphere fresh-keeping packing machine according to claim 1, which is characterized in that the conveyer belt (21) Sealing sliding slot (311) of the two sides respectively with the controlled atmosphere room main body (31) two sides of the bottom is slidably matched, in the sealing sliding slot (311) between the conveyer belt (21) gap location setting sealing sponge (33), the controlled atmosphere room main body (31) bottom remaining Two sides are equipped with controlled atmosphere room hermatic door (34), and two controlled atmosphere room hermatic doors (34) and the transmission surface of the conveyer belt (21) are matched It closes, to completely cut off outside air into controlled atmosphere room main body (31).

3. a kind of continous way controlled atmosphere fresh-keeping packing machine according to claim 2, which is characterized in that two controlled atmosphere rooms are close Closure door (34) is mounted in controlled atmosphere room main body (31) by compressed spring (342) and locating rod (343), controlled atmosphere room hermatic door (34) Bottom be connected with hermatic door roller (36), the transmission surface elastic connecting of the hermatic door roller (36) and the conveyer belt (21) Touching.

4. a kind of continous way controlled atmosphere fresh-keeping packing machine according to claim 1, which is characterized in that the inflation mechanism includes Controlled atmosphere spout (54), the controlled atmosphere spout (54) are mounted in controlled atmosphere room main body (31), and controlled atmosphere spout (54) passes through air supply pipe (53) it is connected with liquid nitrogen container (5), is connected with gasifier (51) and distribution solenoid valve (52) on the air supply pipe (53), passes through adjusting The aperture of the distribution solenoid valve (52) realizes variable-flow controlled atmosphere to adjust the injection flow of nitrogen.

5. a kind of continous way controlled atmosphere fresh-keeping packing machine according to claim 1, which is characterized in that further include sealing machine rack (6), it is equipped with sliding block (68) on the sealing machine rack (6), the closing-cutting mechanism (4) is mounted on the sliding block (68), envelope It cuts mechanism to be connected with crank (67) by connecting rod (66), the crank (67) is connected with sealing electromechanics machine (65).

6. a kind of continous way controlled atmosphere fresh-keeping packing machine according to claim 1, which is characterized in that the elastic traction roller (63) both ends are movably arranged in the long hole of the sealing machine rack (6), and reset spring, institute are fixedly installed in the long hole The one end for stating reset spring is fixedly connected on the top of the elastic traction roller (63).

7. a kind of continous way controlled atmosphere fresh-keeping packing machine according to claim 5, which is characterized in that the sealing machine rack (6) two sides are also connected with supporting mechanism, and two supporting mechanisms are separately positioned on the two sides of the conveyer belt (21), described Supporting mechanism includes rest pad (64), and rest pad (64) setting is below the station (9), and the two of the rest pad (63) Side is equipped with roller (61), and roller (61) is supported on the conveyer belt (21) bottom.

8. a kind of continous way controlled atmosphere fresh-keeping packing machine according to claim 1, which is characterized in that the station (9) includes Packing container rack (91) is provided with socket on the packing container rack (91), and the outer edge ring of the socket is set There is sealing machine knife slot (92), the outer peripheral bottom of socket is equipped at least two installing taches (93), and the packing container is placed Frame (91) is fixedly mounted on the station hole of the conveyer belt (21) by the installing tache (93).

9. a kind of continous way controlled atmosphere fresh-keeping packing machine according to claim 1, which is characterized in that the support mechanism (22) Including carrier roller frame (221), the two sides of the carrier roller frame (221) connect elevating mechanism (11), and the elevating mechanism (11) is fixed to be connected It connects on rack (10).

10. the packing method of -9 described in any item continous way controlled atmosphere fresh-keeping packing machines according to claim 1, which is characterized in that The following steps are included:

Step S1: the packing container (7) for installing material is placed on station (9) by feeding, and station (9) is with conveyer belt (21) It runs to controlled atmosphere mechanism (3)；

Step S2: controlled atmosphere, inflation mechanism to the packing container (7) spray nitrogen, nitrogen along the packing container (7) side wall to It is sprayed in packing container (7), nitrogen jet flow declines with oxygen concentration and gradually reduced during controlled atmosphere, in packing container (7) Air be discharged from exhaust duct (35), lambda sensor (36) monitoring is by the oxygen content of the exhaust duct (35), when the oxygen When sensor (36) monitors that the oxygen concentration of the gas of discharge drops to target value, inflation mechanism stops supplying nitrogen, and controlled atmosphere is complete At packing container (7) is run with conveyer belt (21) to closing-cutting mechanism (4)；

Step S3: sealing, to packing container (7) socket top conveying and packaging film, closing-cutting mechanism is pushed to heat packaging film and be sealed In the packing container (7) socket and cut off heat-seal land；

Step S4: blanking, the packing container sealed (7) leave closing-cutting mechanism (4), the packet that will have been sealed with conveyer belt (21) Packaging container (7) takes out；

Step S5: circulation, the S1- step that repeats the above steps S4.

Technical field

The present invention relates to controlled atmospheric packing field, in particular to a kind of continous way controlled atmosphere fresh-keeping packing machine and its packing method.

Background technique

Controlled atmosphere fresh-keeping packing is using the package materials with gas barrier property, according to actual needs by one Certainty ratio O₂+CO₂+N₂, N₂+CO₂, O₂+CO₂Mixed gas is filled in packaging, prevent food physics, chemistry, in terms of Quality decline occurs or slows down the speed of quality decline, to extend Food Shelf-life, promotes food value.

However, controlled atmosphere distribution is completed with heat-sealing-cutting membrane process by upper die and lower die, upper mold in current controlled atmospheric packing technology Equipped with closing-cutting mechanism, lower die is equipped with ventilation mechanism, needs that packing container is first delivered to lower die, closed up by upper die and lower die, will be wrapped Dress film is covered between lower die and upper mold, is sealed again after forming sealing space, then after being taken a breath by ventilation mechanism；This mistake After journey suffers from the drawback that (1) packing container enters lower die, it is necessary to just can be carried out heat-sealing, controlled atmosphere distribution after completing controlled atmosphere distribution It cannot be carried out simultaneously with heat-sealing-cutting film, controlled atmospheric packing low efficiency；(2) ratio of gas mixture can not be accurately known during controlled atmosphere distribution Example, and remaining oxygen is higher in packing container will have a direct impact on controlled atmospheric packing fresh-keeping effect.

Therefore, in order to solve the above-mentioned technical problem, it is necessary to design it is a kind of can Multi-station synchronous work compound continous way Efficient work compound may be implemented in controlled atmosphere fresh-keeping packing machine and its packing method, improves controlled atmospheric packing fresh-keeping effect, improves controlled atmosphere Packaging efficiency.

Summary of the invention

The present invention is in view of the above-mentioned problems of the prior art, provide a kind of continous way controlled atmosphere fresh-keeping packing machine and its packet Dress method.

In order to achieve the above purpose, the present invention uses following technical measures:

A kind of continous way controlled atmosphere fresh-keeping packing machine, including the transport mechanism, controlled atmosphere mechanism and sealing being arranged on the rack Mechanism, the transport mechanism include cycle rotation conveyer belt and support mechanism moving up and down, set on the conveyer belt It is equipped at least four station, it is synchronous respectively to carry out feeding, controlled atmosphere, sealing, blanking procedure, it is placed with packing container in the station, Support mechanism support is in the packing container lower end；Each station is driven by the transport mechanism, is sequentially completed Material, controlled atmosphere, sealing, blanking procedure, and each station process does not interfere with each other and orderly carries out, and can effectively improve continuous The packaging efficiency of formula controlled atmosphere fresh-keeping packing machine is time saving and energy saving；

The controlled atmosphere mechanism includes controlled atmosphere room main body, controlled atmosphere room main body and the conveyer belt transmission surface elastic packing, Rectangular at dynamic sealing space on a moving belt, controlled atmosphere room main body is connected with inflation mechanism, and inflation mechanism is to the packing container Nitrogen is sprayed, controlled atmosphere room main body is equipped with exhaust duct, and the exhaust duct inner wall is equipped with the lambda sensor of monitoring oxygen concentration；It is dynamic State sealing space can be effectively prevented station transfer and bring spatial gaps to influence air-tightness, lambda sensor monitoring discharge gas In oxygen content, in order to avoid remain a large amount of oxygen in packing container；

The closing-cutting mechanism is tightly disposed in controlled atmosphere mechanism side, and the two sides of closing-cutting mechanism are equipped with can elastic lifting Elastic traction roller, the lofty perch that the station is not higher than to low spot of the elastic traction roller, packaging film relaxation is described in two Between elastic traction roller, packing container inputs closing-cutting mechanism from the controlled atmosphere mechanism, and station can jack up elastic traction roller, enter Closing-cutting mechanism part will be contacted with packaging film, reduce the gas loss of controlled atmosphere.

Preferably, the two sides of the conveyer belt are slided with the sealing sliding slot of the controlled atmosphere room bottom part body two sides respectively Cooperation, the gap location setting sealing sponge between the sealing sliding slot and the conveyer belt, prevents external gas from entering gas Adjust room main body, the controlled atmosphere room remaining two sides of bottom part body are equipped with controlled atmosphere room hermatic door, two controlled atmosphere room hermatic doors with The transmission surface of the conveyer belt cooperates, to completely cut off outside air into controlled atmosphere room main body.The into/out air adjusting machine of station When structure, the inclined-plane at station edge is first contacted with controlled atmosphere room hermatic door, and in motion process, controlled atmosphere room hermatic door is jacked up, and station is suitable After benefit is into/out after the main body of controlled atmosphere room, hermatic door downslide in controlled atmosphere room is re-closed.

Preferably, two controlled atmosphere room hermatic doors are mounted in the main body of controlled atmosphere room by compressed spring and locating rod, The bottom of controlled atmosphere room hermatic door is connected with hermatic door roller, the transmission surface elastic connecting of the hermatic door roller and the conveyer belt Touching.When the into/out controlled atmosphere mechanism of station, the inclined-plane at station edge is first contacted with hermatic door roller, and controlled atmosphere room hermatic door is pushed up It rises, after station can smoothly enter into/leave rear controlled atmosphere room main body, compressed spring resets, and pushes controlled atmosphere room hermatic door to glide, by controlled atmosphere room Body seal, the hermatic door roller fit closely under the action of elastic force with the transmission surface of conveyer belt, prevent that there are gaps.

Preferably, the inflation mechanism includes controlled atmosphere spout, the controlled atmosphere spout is mounted in the main body of controlled atmosphere room, controlled atmosphere Spout is connected with liquid nitrogen container by air supply pipe, and gasifier and distribution solenoid valve are connected on the air supply pipe.Liquid nitrogen is from institute Liquid nitrogen container output is stated, liquid is changed into gaseous state after gasifier, and sprays nitrogen by distribution solenoid valve control controlled atmosphere spout, By adjusting the aperture of the distribution solenoid valve, to adjust the injection flow of nitrogen, variable-flow controlled atmosphere is realized.

Preferably, further including sealing machine rack, sliding block, the closing-cutting mechanism installation are installed in the sealing machine rack On the slide block, closing-cutting mechanism is connected with crank by connecting rod, and the crank is connected with sealing electromechanics machine.The sealing machine machine Frame is equipped with sliding slot, and the sliding block is installed on sliding slot, and the rotation of crank described in the sealing machine motor driven, crank handle turns connecting rod is done Circular motion, to realize that band movable slider moves up and down.

Preferably, the closing-cutting mechanism includes sealing machine mounting plate, the sealing machine mounting plate passes through the first positioning column It is connected with sealing machine heating plate, the first spring is socketed on first positioning column, the periphery of the sealing machine heating plate is equipped with Pressure ring, the pressure ring connect the sealing machine mounting plate by the second positioning column, second spring.

Preferably, the closing-cutting mechanism further includes cutter, the cutter setting adds in the pressure ring and the sealing machine Between hot plate, one end of cutter connects the sealing machine mounting plate.

Preferably, the closing-cutting mechanism includes packaging film feed mechanism, the packaging film feed mechanism includes for deflector roll And film collecting roller, the two sides of the sealing machine rack are respectively equipped with traction roller and the elastic traction roller, described in either side on lead Pick-up roll and the elastic traction roller are setting up and down, and packaging film one end is exported from described for deflector roll, bypass the sealing machine rack two The upper traction roller and elastic traction roller of side, are recycled by the film collecting roller, and the closing-cutting mechanism is arranged in two elastic tractions Between roller.

Preferably, the both ends of the elastic traction roller are movably arranged in the long hole of the sealing machine rack, the length Reset spring is fixedly installed in hole, one end of the reset spring is fixedly connected on the top of the elastic traction roller, works as institute When stating elastic traction roller by upward thrust, elastic traction roller shifts up and pressed home spring, and reset spring is shunk simultaneously Apply opposition to the elastic traction roller, fits closely elastic traction roller with station, when the elastic traction When the thrust that roller is subject to disappears, reset spring elastic reset resets elastic traction roller.

Preferably, the two sides of the sealing machine rack are also connected with supporting mechanism, two supporting mechanisms are set respectively It sets in the two sides of the conveyer belt, the supporting mechanism includes rest pad, and the rest pad is arranged below the station, described The two sides of rest pad are equipped with roller, and roller is supported on the conveyer belt bottom.The supporting mechanism is arranged in the sealing machine The underface of structure, roller are used for conveyer belt, reduce the deflection deformation of conveyer belt, and two pieces of rest pads are set to below transmission belt At 2-5 millimeters, conveyer belt does not contact when moving with the rest pad, and for packing container in sealing, the rest pad support is in institute Station two sides are stated, upward towing force is generated to conveyer belt, guarantee going on smoothly for sealing, reduce the deflection deformation of conveyer belt.

Preferably, the station includes packing container rack, it is provided with socket on the packing container rack, institute It states socket to match with the packing container, the outer edge of the socket is equipped with sealing machine knife slot, the outside of socket The bottom of edge is equipped at least two installing taches, and the packing container rack is fixedly mounted on the transmission by the installing tache The station hole of band.

Preferably, the support mechanism includes carrier roller frame, the two sides of the carrier roller frame connect elevating mechanism, the lifting Mechanism is fixedly connected on the rack.More transfer rollers are placed on the carrier roller frame, carrier roller frame is used for supporting packaging container, reduces and passes The deflection deformation for sending band can adjust the height of carrier roller frame up and down by elevating mechanism to adapt to the packing container of different size.

A kind of packing method of continous way controlled atmosphere fresh-keeping packing machine, comprising the following steps:

Step S1: the packing container for installing material is placed on station by feeding, and station is run with conveyer belt to controlled atmosphere Mechanism；

Step S2: controlled atmosphere, inflation mechanism spray nitrogen to the packing container, and nitrogen is along the packing container side wall to packet It is sprayed in packaging container, nitrogen jet flow declines with oxygen concentration and gradually reduced during controlled atmosphere, and the air in packing container is certainly Exhaust duct discharge, lambda sensor monitoring pass through the oxygen content of the exhaust duct, when the lambda sensor monitors the gas of discharge When the oxygen concentration of body drops to target value, inflation mechanism stops supplying nitrogen, and controlled atmosphere is completed, and packing container is run with conveyer belt To closing-cutting mechanism；

Step S3: sealing, packaging film feed mechanism are pushed to conveying and packaging film above packing container socket, closing-cutting mechanism Packaging film heating is enclosed in the packing container socket and cuts off heat-seal land；

Step S4: blanking, the packing container sealed leave closing-cutting mechanism with conveyer belt, the packing container that will have been sealed It takes out；

Step S5: circulation, the S1- step that repeats the above steps S4.

Preferably, when controlled atmosphere starts, adjust mode in step S2 using fast, the aperture of the distribution solenoid valve is tuned up, Controlled atmosphere spout injection flow is big, when oxygen concentration is close to target value in the main body of controlled atmosphere room, adjusts mode using slow, distribution solenoid valve Aperture gradually reduces, and nitrogen jet flow gradually reduces, when the lambda sensor monitors the oxygen concentration decline of the gas of discharge When to target value, inflation mechanism stops supplying nitrogen, and controlled atmosphere is completed.

The beneficial effects of the present invention are:

The present invention uses conveyer belt to be recycled to realize that each station automatically continuously switches operation mode, feeding, controlled atmosphere, envelope It cuts, export etc. that links are synchronous carries out, may be implemented efficient work compound, it is entire that each station by conveyer belt is sequentially sent to completion Controlled atmospheric packing work, feeding, controlled atmosphere, sealing, each link of output do not interfere with each other and orderly carry out, it can be achieved that packing container controlled atmosphere packet The automation of dress effectively improves the working efficiency of controlled atmospheric packing, reduces the investment of manpower and material resources, has good market prospects； Moreover, controlled atmosphere room main body is rectangular at dynamic sealing space on a moving belt, dynamic sealing space can satisfy station conversion needs, The problem of station transfer can also be effectively prevent to bring spatial gaps and influence space air-tightness, lambda sensor monitoring discharge gas In oxygen content be precisely controlled oxygen content in packing container in order to avoid remain a large amount of oxygen in packing container, improve controlled atmospheric packing Fresh-keeping effect.

Detailed description of the invention

Fig. 1 is the schematic perspective view of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Fig. 2 is the structural schematic diagram of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Fig. 3 is the top view of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Fig. 4 is the station structure schematic diagram of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Fig. 5 is the station and packing container connection schematic diagram of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Fig. 6 is the structure chart of the controlled atmosphere mechanism of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Fig. 7 is the controlled atmosphere mechanism and conveyer belt connection schematic diagram of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Fig. 8 is the controlled atmosphere mechanism top view of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Fig. 9 is the structural schematic diagram of the closing-cutting mechanism of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Figure 10 is the structure principle chart of the closing-cutting mechanism of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Figure 11 is the side view of the closing-cutting mechanism of continous way controlled atmosphere fresh-keeping packing machine of the present invention；

Figure 12 is the working principle diagram of the closing-cutting mechanism of continous way controlled atmosphere fresh-keeping packing machine of the present invention.

Specific embodiment

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.

As shown in Fig. 1-Figure 12, a kind of continous way controlled atmosphere fresh-keeping packing machine, including be arranged in rack 1 transport mechanism 2, Controlled atmosphere mechanism 3 and closing-cutting mechanism 4, the transport mechanism include cycle rotation conveyer belt 21 and support moving up and down Mechanism 22 is provided at least four station 9 on the conveyer belt 21, synchronous respectively to carry out feeding, controlled atmosphere, sealing, blanking procedure, Packing container 7 is placed in the station 9,22 support of support mechanism is in 7 lower end of packing container；Each station 9 are driven by the transport mechanism, sequentially complete feeding, controlled atmosphere, sealing, blanking procedure, and each 9 process of the station is mutual It does not interfere and orderly carries out, the packaging efficiency of continous way controlled atmosphere fresh-keeping packing machine can be effectively improved, it is time saving and energy saving；

The controlled atmosphere mechanism 3 includes controlled atmosphere room main body 31, controlled atmosphere room main body 31 and the 21 transmission surface bullet of conveyer belt Property sealing, dynamic sealing space is formed above conveyer belt 21, controlled atmosphere room main body 31 is connected with inflation mechanism, and inflation mechanism is to institute It states packing container 7 and sprays nitrogen, controlled atmosphere room main body 31 is equipped with exhaust duct 35, and 35 inner wall of exhaust duct installs oxygen sensor 36；Dynamic sealing space can be effectively prevented station transfer and bring spatial gaps to influence air-tightness, and lambda sensor 36 monitors The oxygen content in gas is discharged, in order to avoid a large amount of oxygen is remained in packing container；

The closing-cutting mechanism 4 is tightly disposed in 3 side of controlled atmosphere mechanism, and the two sides of closing-cutting mechanism 4 are equipped with can elasticity liter The elastic traction roller 63 of drop, the lofty perch that the station 9 is not higher than to low spot of the elastic traction roller 63, packaging film relaxation exist Between two elastic traction rollers 63, packing container 7 inputs closing-cutting mechanism, the inclined-plane at 9 edge of station from the controlled atmosphere mechanism 3 Elastic traction roller 63 can be first jacked up, having entered 4 part of closing-cutting mechanism will contact with packaging film, reduce the gas loss of controlled atmosphere.

In the present embodiment, the transport mechanism 2 includes belt motor 23, drive pulley 25 and driven pulley 26, The belt motor 23 drives the drive pulley 25, the drive pulley 25 and driven pulley by driving belt 24 The conveyer belt 21 is wound on 26, is rotated by the drive pulley 25, and 21 cycle rotation of conveyer belt is driven.

Match respectively with the sliding of the sealing sliding slot 311 of 31 two sides of the bottom of the controlled atmosphere room main body two sides of the conveyer belt 21 Close, the gap location setting sealing sponge 33 between the sealing sliding slot 311 and the conveyer belt 21, prevent external gas into Enter controlled atmosphere room main body 31, main body 31 remaining two sides of bottom in the controlled atmosphere room are equipped with controlled atmosphere room hermatic door 34, two controlled atmospheres The transmission surface of room hermatic door 34 and the conveyer belt 21 cooperates, to completely cut off outside air into controlled atmosphere room main body 31.Work When 9 into/out controlled atmosphere mechanism 3 of position, the inclined-plane at 9 edge of station is first contacted with controlled atmosphere room hermatic door 34, in motion process, controlled atmosphere The inclined-plane at 34 station of room hermatic door, 9 edge is first jacked up, and after station 9 can smoothly enter into/leave rear controlled atmosphere room main body 31, controlled atmosphere room is close Closure door 34 glides and re-closes.

In more detail, two controlled atmosphere room hermatic doors 34 are mounted on controlled atmosphere room by compressed spring 342 and locating rod 343 In main body 31, the two sides of controlled atmosphere room main body 31 are equipped with mounting groove, and controlled atmosphere room hermatic door 34 is flexibly connected the mounting groove, institute The upper end for stating controlled atmosphere room hermatic door 34 is connected with multiple locating rods 343, and compressed spring 342 is arranged in locating rod 343, described The top of mounting groove is equipped with multiple sets of holes compatible with 343 top of the locating rod, controlled atmosphere room hermatic door 34 by On thrust when, will push locating rod 343 and go deep into sets of holes, compressed spring 342 is squeezed deformation, when the thrust disappear, pressure 342 elastic reset of contracting spring pushes the controlled atmosphere hermatic door 34 to push, and the bottom of controlled atmosphere room hermatic door 34 is connected with sealing Door roller 36, the transmission surface Elastic Contact of the hermatic door roller 36 and the conveyer belt 21.The into/out air adjusting machine of station 9 When structure 3, the inclined-plane at 9 edge of station is first contacted with hermatic door roller 36, and controlled atmosphere room hermatic door 34 is jacked up, and station 9 can smoothly enter into/ After leaving rear controlled atmosphere room main body 31, compressed spring 342 resets, and controlled atmosphere room hermatic door 34 is pushed to glide, and controlled atmosphere room main body 31 is close Envelope, transmission surface of the hermatic door roller 36 under the action of elastic force with conveyer belt 21 fit closely, and prevents that there are gaps.

The inflation mechanism includes controlled atmosphere spout 54, and the controlled atmosphere spout 54 is mounted in controlled atmosphere room main body 31, controlled atmosphere spray Mouth 54 is connected with liquid nitrogen container 5 by air supply pipe 53, is connected with gasifier 51 and distribution solenoid valve 52 on the air supply pipe 53.Liquid Nitrogen is exported from the liquid nitrogen container 5, and after gasifier 51, liquid is changed into gaseous state, and by adjusting the distribution solenoid valve 52 aperture realizes variable-flow controlled atmosphere to adjust the injection flow of nitrogen.Distribution solenoid valve 52 adjusts spout injection flow, When controlled atmosphere starts, injection flow is big, realize it is fast adjust, when concentration is close to target value, injection flow reduce realize it is slow adjust, when oxygen is dense When degree drops to target value, inflation mechanism stops supplying nitrogen, and controlled atmosphere is completed.

In addition, being provided with circulating fan 56 on the gasifier 51 to accelerate the gasification efficiency of liquid nitrogen.

In the present embodiment, the top of controlled atmosphere room main body 31 is hemispherical cavity cell structure, and controlled atmosphere spout 54 is equipped with 4, point It is not mounted on the top of controlled atmosphere room main body 31,4 controlled atmosphere spouts 54 are respectively aligned to 7 inner wall of packing container, institute State the center of top of 35 controlled atmosphere room main body 31 of exhaust duct.

The continous way controlled atmosphere fresh-keeping packing machine further includes sealing machine rack 6, is equipped with sliding block in the sealing machine rack 6 68, the closing-cutting mechanism 4 is mounted on the sliding block 68, and closing-cutting mechanism 4 is connected with crank 67, the crank 67 by connecting rod 66 It is connected with sealing electromechanics machine 65.The sealing machine rack 6 is equipped with sliding slot, and the sliding block 68 is installed on sliding slot, the sealing machine Motor 65 drives the crank 67 to rotate, and crank 67 drives connecting rod 66 to move in a circle, and moves down on band movable slider 68 to realize It is dynamic.The closing-cutting mechanism 4 includes sealing machine mounting plate 42, and the sealing machine mounting plate 42 is connected with envelope by the first positioning column 48 Machine heating plate 43 is cut, the first spring 41 is socketed on first positioning column 48, the periphery of the sealing machine heating plate 43 is equipped with Pressure ring 45, the pressure ring 45 connect the sealing machine mounting plate 42 by the second positioning column 49, second spring 46.Packing container 7 Closing-cutting mechanism 4 is inputted from the controlled atmosphere mechanism 3, closing-cutting mechanism 4 is pushed in the driving of sealing electromechanics machine 65, and packaging film heat-sealing is existed The socket of the packing container 7.

The closing-cutting mechanism 4 further includes cutter 44, and the setting of cutter 44 is heated in the pressure ring 45 with the sealing machine Between plate 43, one end of cutter 44 connects the sealing machine mounting plate 42.

The closing-cutting mechanism 4 includes packaging film feed mechanism 47, and the packaging film feed mechanism 47 includes for 471 He of deflector roll Film collecting roller 472, the two sides of the sealing machine rack 6 are respectively equipped with traction roller 62 and the elastic traction roller 63, either side institute It states traction roller 62 and the elastic traction roller 63 is setting up and down, packaging film one end is exported from described for deflector roll 471, around described The upper traction roller 62 and elastic traction roller 63 of 6 two sides of sealing machine rack, are recycled by the film collecting roller 472, and the closing-cutting mechanism 4 is set It sets between two elastic traction rollers 63.

The both ends of the elastic traction roller 63 are movably arranged in the long hole of the sealing machine rack 6, solid in the long hole Dingan County is equipped with reset spring, and one end of the reset spring is fixedly connected on the top of the elastic traction roller 63, when the bullet Property traction roller 63 by upward thrust when, elastic traction roller 63 shifts up and pressed home spring, and reset spring is shunk simultaneously Apply opposition to the elastic traction roller 63, fits closely elastic traction roller 63 with station 9, packaging film is tight It is close to enclose 9 upper end of station, when the thrust that the elastic traction roller 63 is subject to disappears, reset spring elastic reset, by bullet Property traction roller 63 reset.

The two sides of the sealing machine rack are also connected with supporting mechanism, and two supporting mechanisms are separately positioned on the biography The two sides of band 21 are sent, the supporting mechanism includes rest pad 64, and the rest pad 64 is arranged below the station 9, the branch The two sides of supporting block 64 are equipped with roller 61, and roller 61 is supported on 21 bottom of conveyer belt.The supporting mechanism is arranged described The underface of closing-cutting mechanism 4, roller 61 are used for conveyer belt 21, reduce the deflection deformation of conveyer belt 21, two pieces of rest pads 64 It is set at lower section 2-5 millimeters of transmission belt 21, conveyer belt 21 does not contact when moving with the rest pad 64, and packing container 7 is sealing When cutting, 64 support of rest pad generates upward towing force to conveyer belt 21, guarantees the smooth of sealing in 9 two sides of station It carries out, reduces the deflection deformation of conveyer belt 21.

The station 9 includes packing container rack 91, is provided with socket, the appearance on the packing container rack 91 It sets mouth to match with the packing container 7, the outer edge of the socket is equipped with sealing machine knife slot 92, the outer edge of socket Bottom set there are two installing tache 93,7 rack of packing container is fixedly mounted on the transmission by the installing tache 93 With 21 9 hole of station.

In the present embodiment, the station 9 is the tubular structure of bottom connection, and the socket edge of station 9 is equipped with inclined-plane, It is the sealing machine knife slot 92 between inclined-plane and the socket, the sealing machine knife slot 92 is annular groove.

The support mechanism 22 includes carrier roller frame 221, and the two sides of the carrier roller frame 221 connect elevating mechanism 11, the liter Descending mechanism 11 is fixedly connected in rack 1.More transfer rollers are placed on the carrier roller frame 221, carrier roller frame 221 is used for supporting packaging Container 7 reduces the deflection deformation of conveyer belt 21, can adjust the height of carrier roller frame 221 up and down by elevating mechanism 11 to adapt to not The packing container 7 of same specification.

The elevating mechanism 11 includes guide rail, and the two sides of the carrier roller frame 221 are connected with link block, the link block and institute It states guide rail to be slidably matched, link block is connected with screw-threaded shaft elevator, cylinder or oil cylinder.

The side of the rack 1 is equipped with distribution box 8, and the distribution box 8 provides power supply for the electrical equipment of packing machine.

A kind of packing method of continous way controlled atmosphere fresh-keeping packing machine, comprising the following steps:

Step S1: the packing container 7 for installing material is placed on station 9 by feeding, station 9 with conveyer belt run to Controlled atmosphere mechanism 3；

Step S2: controlled atmosphere, inflation mechanism to the packing container 7 spray nitrogen, nitrogen along 7 side wall of packing container to It is sprayed in packing container 7, nitrogen jet flow declines with oxygen concentration and gradually reduces, the sky in packing container 7 during controlled atmosphere Gas is discharged from exhaust duct 35, and the monitoring of lambda sensor 36 passes through the oxygen content of the exhaust duct 35, when the lambda sensor 36 is supervised When measuring the oxygen concentration of the gas of discharge and dropping to target value, inflation mechanism stops supplying nitrogen, and controlled atmosphere is completed, packing container 7 With the operation of conveyer belt 21 to closing-cutting mechanism 4；

Step S3: sealing, packaging film feed mechanism are pushed to conveying and packaging film above packing container socket, closing-cutting mechanism Packaging film heating is enclosed in the packing container socket and cuts off heat-seal land.

Step S4: blanking, the packing container 7 sealed leave closing-cutting mechanism 4 with conveyer belt, and the packaging sealed is held Device 7 takes out；

Step S5: circulation, the S1- step that repeats the above steps S4.

In step S2, when controlled atmosphere starts, mode is adjusted using fast, the aperture of the distribution solenoid valve 52 is tuned up, controlled atmosphere spray Mouthful 54 injection flows are big, when oxygen concentration is close to target value in controlled atmosphere room main body 31, adjust mode using slow, distribution solenoid valve 52 Aperture gradually reduces, and nitrogen jet flow gradually reduces, when under the oxygen concentration that the lambda sensor 36 monitors the gas of discharge When dropping to target value, inflation mechanism stops supplying nitrogen, and controlled atmosphere is completed.

In conclusion the present invention uses conveyer belt to be recycled to realize that each station automatically continuously switches operation mode, on The links such as material, controlled atmosphere, sealing, blanking are synchronous to be carried out, and efficient work compound may be implemented, and each station is sequentially transmitted by conveyer belt To entire controlled atmospheric packing work is completed, feeding, controlled atmosphere, sealing, each link of output do not interfere with each other and orderly carry out, it can be achieved that packing The automation of container controlled atmospheric packing effectively improves the working efficiency of controlled atmospheric packing, reduces the investment of manpower and material resources, has good Market prospects；Moreover, controlled atmosphere room main body is rectangular at dynamic sealing space on a moving belt, dynamic sealing space can satisfy station The problem of conversion needs, and station transfer can also be effectively prevent to bring spatial gaps and influence space air-tightness, lambda sensor prison The oxygen content surveyed in discharge gas is precisely controlled oxygen content in packing container, mentions in order to avoid remaining a large amount of oxygen in packing container High controlled atmospheric packing fresh-keeping effect.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that Specific implementation of the invention is only limited to these instructions.For those of ordinary skill in the art to which the present invention belongs, In Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to of the invention Protection scope.