CN111572860A

CN111572860A - Nitrogen-filled packaging device

Info

Publication number: CN111572860A
Application number: CN202010351116.5A
Authority: CN
Inventors: 杨洁
Original assignee: Chongqing Tianrun Food Development Co ltd
Current assignee: Chongqing Tianrun Food Development Co ltd
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-08-25
Anticipated expiration: 2040-04-28
Also published as: CN111572860B

Abstract

The invention discloses a nitrogen-filled packaging device which comprises a workbench, a conveying mechanism, a turnover mechanism, an inflating mechanism and a sealing mechanism, wherein the conveying mechanism, the turnover mechanism, the inflating mechanism, the sealing mechanism and the rotating mechanism are all arranged on the workbench, and the turnover mechanism, the inflating mechanism, the sealing mechanism and the rotating mechanism are sequentially arranged along the conveying direction of the conveying mechanism. Above-mentioned fill nitrogen packing plant carries the wrapping bag through transporting the mechanism, and tilting mechanism overturns it, inflates the mechanism and fills nitrogen and bleed, seals the mechanism and accomplishes and seal, can fill nitrogen and pack the wrapping bag, guarantees the fresh of food to convenient operation, simple structure, low in manufacturing cost to fill the mode of nitrogen from the below, guaranteed the effect of filling nitrogen, make nitrogen gas be difficult for revealing.

Description

Nitrogen-filled packaging device

Technical Field

The invention relates to the technical field of food packaging equipment, in particular to a nitrogen-filled packaging device.

Background

In the dried tofu snack production field, the packaging mode that commonly uses is vacuum packaging, through taking out the air in the wrapping bag, maintains the state of high decompression in the bag, makes the microorganism do not have the living condition, reaches fresh-keeping effect, makes the dried tofu snack that packs can get the instant use promptly, has convenient and fast's advantage.

With the development of scientific and technological means, a nitrogen-filled fresh-keeping packaging mode is available. Nitrogen, of the formula N2, is a generally colorless, odorless gas. At standard atmospheric pressure, nitrogen turned colorless liquid when cooled to-195.8 deg.C, and turned snow-like solid when cooled to-209.8 deg.C. Nitrogen is chemically inert and hardly reacts with other substances at normal temperature, and is therefore often used for the production of preservatives.

Through filling nitrogen, keep apart food and oxygen to reach dampproofing, quality guarantee and fresh-keeping effect, nitrogen filling fresh-keeping's mode is compared with the mode of vacuum fresh-keeping, and fresh-keeping effect is better, to the dried tofu snacks of preparation flavor taste, more can guarantee its fresh taste. However, the existing nitrogen charging equipment is large-scale equipment, so that the use cost is too high, and the nitrogen charging equipment is difficult to bear for non-large enterprises.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a nitrogen-filled packaging device which has a good nitrogen-filled effect, is simple in structure and is low in use cost.

In order to achieve the purpose, the invention is realized by the following technical scheme: a nitrogen-filled packaging device comprises a workbench, a conveying mechanism, a turnover mechanism, an inflating mechanism and a sealing mechanism, wherein the conveying mechanism, the turnover mechanism, the inflating mechanism, the sealing mechanism and the rotating mechanism are all arranged on the workbench, and the turnover mechanism, the inflating mechanism, the sealing mechanism and the rotating mechanism are sequentially arranged along the conveying direction of the conveying mechanism;

the conveying mechanism comprises a rotary motor, a conveying plate and a plurality of clamping stations, the rotary motor and the conveying plate are both arranged on a workbench, the rotary motor can drive the conveying plate to rotate, the conveying plate is annular, an annular groove is formed in the conveying plate along the circumferential direction, the conveying plate is divided into an inner annular plate and an outer annular plate by the annular groove, and the plurality of clamping stations are uniformly arranged on the conveying plate along the circumferential direction at intervals;

the clamping station comprises two supports, a base plate, a spring and two clamping plates, the supports are respectively arranged on an inner ring disc and an outer ring disc of the conveying disc, one end of each clamping plate is provided with a strip-shaped hole, two ends of the base plate respectively penetrate through the strip-shaped holes of the two clamping plates, the two clamping plates are connected through the spring, one sides far away from each other are respectively connected with the two supports through rotating shafts, and the rotating shafts can be inserted into the clamping plates and can drive the clamping plates to rotate;

one end of the clamping plate, far away from the base plate, inclines towards the direction of approaching each other, and one side of the clamping plate, far away from the base plate, is provided with two grooves;

the clamping plates are arranged at the end close to the going direction, the sides close to each other are inclined towards the direction far away from each other, and when the two clamping plates are attached, a notch is formed at the end close to the going direction of each clamping plate;

a first wedge-shaped block is arranged between the rotary mechanism and the turnover mechanism, and the small end of the first wedge-shaped block faces the incoming direction of the clamping station and can be inserted into the notch;

the turnover mechanism comprises a first motor and a first deflector rod, the first deflector rod is L-shaped, one end of the first deflector rod is connected with the first motor, the other end of the first deflector rod is positioned on a motion track of the clamping station, and the first deflector rod can push the clamping plate to rotate relative to the bracket;

the inflation mechanism comprises a first air cylinder, a third motor, a base, an inflation tube and an air suction tube, the first air cylinder is arranged on the workbench, the third motor is arranged on the first air cylinder, the third motor is connected with the base through a connecting rod, the inflation tube and the air suction tube are both arranged on the base, the third motor can drive the base to rotate to the position below the clamping station, and the first air cylinder can push the third motor to move along the vertical direction, so that the inflation tube and the air suction tube can be respectively inserted into through holes formed by the two clamping plates;

the sealing mechanism comprises a second air cylinder, a fourth motor, a sealing device and a second wedge-shaped block, the second air cylinder is arranged on the workbench, the fourth motor is arranged on the second air cylinder, the sealing device is connected with the fourth motor through a connecting rod, the fourth motor can drive the sealing device to rotate to the position below the clamping station, the second air cylinder can push the fourth motor to move along the vertical direction,

the second wedge block is arranged in the annular groove, the small end of the second wedge block faces the direction of the clamping station, and the second wedge block can be inserted into the gap of the clamping station;

the slewing mechanism comprises a second motor and a second driving lever, the second driving lever is also L-shaped, one end of the second driving lever is connected with the second motor, the other end of the second driving lever is located on a movement track of the clamping station, and the second driving lever can push the clamping plate to rotate relative to the support.

The rotating electrical machines drives the transfer cart to periodically drive the clamping position to rotate, when the clamping position passes through the first wedge, the first wedge enters into two splints through the notch, and gradually struts to the splints, the packaging bag containing dried tofu snacks is placed into the stretched clamping position, after the transfer cart rotates, the clamping position breaks away from the first wedge, the spring drives the splints to clamp the packaging bag tightly, the top of the packaging bag is laminated along with the lamination of the splints, and two holes are only exposed at the through holes.

After the clamping station reaches the turnover mechanism and stops, the first motor drives the shifting rod to push the clamping plate to rotate 180 degrees relative to the support, so that the two through holes face downwards. After the transfer plate rotates again, the clamping station reaches the inflating mechanism, and the deflector rod rotates along with the clamping station to turn over the next station. The first cylinder and the third motor drive the air inflation pipe and the air suction pipe to be inserted into the two through holes and also inserted into the packaging bag, the air inflation pipe is filled with nitrogen gas inwards, and the air suction pipe sucks out exhausted air.

After the nitrogen filling is completed, the inflating mechanism descends, the clamping station is conveyed to the sealing mechanism, the second wedge-shaped block slightly opens the two clamping plates through the notch, so that the bag opening of the packaging bag slides downwards and is exposed, and at the moment, the second cylinder and the fourth motor push the sealing device to rotate to the lower part of the clamping station and ascend to seal the bag opening of the packaging bag. Then the clamping station continues to move forwards, the second wedge block completely opens the two clamping plates, the packaging bag falls down to finish discharging, and the second wedge block can pass through. And the clamping station finally reaches the position of the rotary mechanism, the second motor drives the second deflector rod to rotate the clamping plate and the substrate for 180 degrees again, so that the opening faces upwards, and the packaging bag is convenient to put into.

The nitrogen-filled packaging device has the beneficial effects that: fill the nitrogen through the carousel formula structure to the wrapping bag, guarantee the fresh of food, fill the nitrogen from the below when filling the nitrogen, make the nitrogen gas that density is less than the air be difficult to reveal from the below, guarantee to fill the effect of nitrogen. The device is uncomplicated in structure, simple to operate, low in use cost and high in cost performance.

Furthermore, a plurality of air exhaust holes are formed in the inner wall of the groove of the clamping plate and communicated with one side, far away from the groove, of the clamping plate;

the inflation mechanism further comprises two exhaust pipes, the exhaust pipes are arranged on two sides of the two clamping plates and can be respectively attached to the outer sides of the two clamping plates and communicated with the exhaust holes.

When the clamping station arrives at the inflating mechanism, the air exhaust pipe exhausts through the air exhaust holes on two sides, the bag opening of the packaging bag is adsorbed on the inner wall of the through hole, and the air inflation pipe and the air suction pipe can be smoothly inserted into the packaging bag.

Further, still include feed mechanism, feed mechanism sets up between tilting mechanism and rotation mechanism, first wedge sets up in feed mechanism department.

Through the feeding mechanism and the first wedge-shaped block, a packaging bag filled with snacks can be placed into the clamping station, then the packaging bag is turned over, and after nitrogen filling and sealing are completed, the packaging bag is turned around and fed again.

Further, still include the unloading slide, the one end setting of unloading slide is in the below of sealing the mechanism, and the other end setting is outside the workstation to the downward slope.

After the clamping plate is opened by the second wedge-shaped block, the sealed packaging bag falls onto the discharging slideway and slides downwards to finish discharging.

Further, the both ends of splint all are equipped with the baffle, the baffle sets up towards the direction that is close to each other, when the one end of keeping away from the base plate of splint was laminated each other, the baffle of two splint was also laminated mutually.

Both sides are sealed, so that the packaging bag is prevented from falling from both sides during overturning.

Drawings

FIG. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic front view of the closing of the clamping stations of the present invention;

FIG. 4 is a schematic top view of the expanding of the clamping station of the present invention;

FIG. 5 is a schematic view of the flipping mechanism of the present invention flipped 180;

FIG. 6 is a schematic front view of the inflation mechanism of the present invention during nitrogen charging;

FIG. 7 is a side schematic view of the inflation mechanism of the present invention during nitrogen charging;

FIG. 8 is a schematic view of the sealing mechanism of the present invention;

FIG. 9 is a schematic view of the swing mechanism of the present invention rotating 180 degrees;

reference numerals: 100-workbench, 200-feeding mechanism, 210-first wedge block, 300-conveying mechanism, 310-conveying disc, 320-inner ring disc, 330-outer ring disc, 340-annular groove, 350-clamping station, 351-bracket, 352-clamping plate, 353-base plate, 354-spring, 355-rotating shaft, 356-groove, 357-air suction hole, 358-notch, 359-stop block, 400-turnover mechanism, 410-first motor, 420-first deflector rod, 500-air charging mechanism, 510-first air cylinder, 520-base, 530-third motor, 531-connecting rod, 540-air charging pipe, 550-air suction pipe, 560-air suction pipe, 600-sealing mechanism, 610-second air cylinder, 620-second wedge block, 630-sealing device, 640-fourth motor, 641-connecting rod, 700-rotary mechanism, 710-second motor, 720-second deflector rod and 800-blanking mechanism.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby. In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like, which indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are used only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referenced components or structures must have a specific orientation, be constructed in a specific orientation, and be operated, and thus are not to be construed as limiting the present invention.

Referring to fig. 1 to 9, the present invention provides a nitrogen-filled packaging apparatus, which includes a workbench 100, a conveying mechanism 300, a turnover mechanism 400, an inflating mechanism 500, a sealing mechanism 600, a revolving mechanism 700, a feeding mechanism 200, and a discharging mechanism 800, wherein the conveying mechanism 300, the turnover mechanism 400, the inflating mechanism 500, the sealing mechanism 600, and the revolving mechanism 700 are all disposed on the workbench 100, and the turnover mechanism 400, the inflating mechanism 500, the sealing mechanism 600, and the revolving mechanism 700 are sequentially disposed along a conveying direction of the conveying mechanism 300. The packaging bags to be nitrogen-filled and packaged are placed into the conveying mechanism 300 through the feeding mechanism 200, after the packaging bags are turned by the turnover mechanism 400, the inflating mechanism 500 fills nitrogen, the sealing mechanism 600 completes sealing, and discharging is completed from the discharging mechanism 800.

Specifically, the conveying mechanism 300 includes a rotary motor, a conveying plate 310 and a plurality of clamping stations 350, the rotary motor and the conveying plate 310 are both disposed on the work table 100, the rotary motor is not shown on the way, and the rotary motor is connected to the conveying plate 310 and can drive the conveying plate 310 to rotate. The conveying plate 310 is annular, an annular groove 340 is formed in the conveying plate 310 in the circumferential direction, the annular groove 340 divides the conveying plate 310 into an inner annular plate 320 and an outer annular plate 330, and the plurality of clamping stations 350 are uniformly arranged on the conveying plate 310 in the circumferential direction at intervals.

As shown in fig. 3 and 4, the clamping station 350 includes two brackets 351, a base plate 353, a spring 354 and two clamping plates 352, the two brackets 351 are respectively fixedly disposed on the inner ring plate 320 and the outer ring plate 330 of the conveying plate 310, the sides of the clamping plates 352 away from each other are respectively connected with the two brackets 351 through rotating shafts 355, the rotating shafts 355 can be inserted into the clamping plates 352, and can drive the clamping plates 352 to rotate relative to the brackets 351, and the rotating shafts 355 cannot rotate without external force. The two clamping plates 352 are provided with strip-shaped through holes, two ends of the base plate 353 respectively penetrate through the two clamping plates 352, the clamping plates 352 can slide relative to the base plate 353, and the two clamping plates 352 are connected through a spring 354.

The ends of the clamp plates 352 remote from the substrate 353 are inclined in the direction of approaching each other, and the springs 354 can be brought into contact with each other by their elastic force in a state where no external force is applied. And the side that is close to each other of laminating end all is equipped with two recesses 356, and the recess 356 of two splint 352 after the laminating can form two through-holes.

The clamping plate 352 has an inclined surface at an end thereof away from the substrate 353 and an end thereof close to the outward direction, and when the two clamping plates 352 are attached to each other, the two inclined surfaces form a gap 358, and the aperture of the gap 358 is gradually reduced inward. The horizontal direction both ends of the clamp plate 352 are further provided with stoppers 359, and the stoppers 359 are disposed in directions approaching each other. When the two clamping plates 352 are attached, the baffles 359 on the two sides are also attached.

The feeding mechanism 200 is provided with a first wedge block 210, and a small end of the first wedge block 210 faces the incoming direction of the clamping station 350 and can be inserted into the notch 358. When the clamping station 350 reaches the loading mechanism 200, the first wedge block 210 is inserted from the gap 358 and gradually inserted between the two clamping plates 352 to spread the clamping plates 352. After the first wedge-shaped block 210 reaches the end of the clamping station 350 (as shown in fig. 4), the conveying plate 310 stops, the packaging bag filled with dried tofu can be placed into the clamping station 350, after the packaging bag is placed into the clamping station 350, the conveying plate 310 continues to rotate, the first wedge-shaped block 210 leaves the clamping station 350, the two clamping plates 352 are closed at the tops under the action of the springs 354, the bag opening of the packaging bag is clamped, and two holes are formed in the bag opening at the two through holes. In the present embodiment, the feeding mechanism 200 employs a belt conveyor.

As shown in fig. 1, 2 and 5, the turnover mechanism 400 includes a first motor 410 and a first shift lever 420, the first shift lever 420 is L-shaped, one end of the first shift lever is connected to the first motor 410, and the other end of the first shift lever is located on the movement track of the clamping station 350. The first motor 410 is disposed on the working platform 100 and can drive the first lever 420 to rotate and push the clamp plate 352 to rotate relative to the bracket 351. After the clamping station 350 with the packaging bags reaches the turnover mechanism 400, the first motor 410 drives the first deflector rod 420 to rotate and push the clamping plate 352 to rotate 180 degrees (see fig. 5), so that the packaging bags inside are turned over, the bag mouths face downwards, and the packaging bags cannot fall out of the clamping station 350 because the packaging bags are in a clamping state and the two sides are blocked by the baffles 359 in the turnover process.

As shown in fig. 1, 2, 6 and 7, the inflating mechanism 500 includes a first cylinder 510, a third motor 530, a base 520, an inflating tube 540, an air suction tube 550 and an air suction tube 560, the first cylinder 510 is disposed on the worktable 100, the third motor 530 is disposed on the first cylinder 510, the base 520 is connected to the third motor 530 through a connecting rod 641531, both the inflating tube 540 and the air suction tube 550 are disposed on the base 520, the inflating tube 540 is connected to a nitrogen gas source, and the air suction tube 550 is connected to an air pump.

The two air pumping pipes 560 are arranged in the annular groove 340 and respectively located on two sides of the clamping station 350, the pipe openings face the direction close to each other and are arc-shaped, and the air pumping pipes 560 are also communicated with an air pump. The outer side of one end of the clamping plate 352, which is far away from the substrate 353, is also arc-shaped and is matched with the pipe orifice of the air suction pipe 560, and a plurality of air suction holes 357 communicated with the outer wall are arranged on the inner wall of the groove 356 of the clamping plate 352.

When the clamping station 350 rotates around the circumferential direction to reach the inflating mechanism 500, the clamping plate 352 enters between the two air pumping pipes 560 and is attached to the two air pumping pipes, the air pumping pipes 560 are communicated with the air pumping holes 357, air is pumped through the air pump, and the air pumping holes 357 tightly adsorb the bag openings of the packaging bags onto the inner wall under the action of suction force.

At this time, the third motor 530 drives the base 520 to rotate to the position below the clamping station 350, the first cylinder 510 pushes the base 520 to move upwards, the air inflation tube 540 and the air suction tube 550 are inserted into the two through holes respectively and are inserted into the packaging bag, the air inflation tube 540 inflates nitrogen gas into the packaging bag, the air suction tube 550 takes away air in the packaging bag, and the nitrogen gas gradually replaces all the air in the bag. After the inflation is completed, the base 520 is lowered and the carriage plate 310 continues to rotate. Before sealing, the nitrogen in the bag is not easy to leak out because the density of the nitrogen is low and the bag opening faces downwards.

As shown in fig. 1, 2 and 8, the sealing mechanism 600 includes a second cylinder 610, a fourth motor 640, a sealing device 630 and a second wedge block 620, the second cylinder 610 is disposed on the worktable 100, the fourth motor 640 is disposed on the second cylinder 610, the sealing device 630 is connected with the fourth motor 640 through a connecting rod 641531, the second wedge block 620 is disposed in the annular groove 340, and the small end of the second wedge block facing the clamping station 350 can be inserted into the gap 358.

When the clamping station 350 reaches the sealing mechanism 600, the second wedge 620 is partially inserted into the clamping station 350 to slightly spread the clamp 352, allowing the bag to slide down a short distance to expose the mouth of the bag. At this time, the fourth motor 640 drives the sealing device 630 to rotate to the position below the clamping station 350, the second cylinder 610 pushes the sealing device 630 to ascend, and the sealing device 630 reaches the bag opening and seals the packaging bag. After the sealing is completed, the sealing device 630 is lowered and the carriage plate 310 continues to rotate. After the second wedge 620 completely opens the clamp 352, the bag falls.

The blanking mechanism 800 is a blanking slideway, one end of which is arranged below the sealing mechanism 600, and the other end of which is arranged outside the workbench 100 and inclines downwards. After the packaging bag falls down, the packaging bag falls onto the discharging slideway to finish discharging.

As shown in fig. 1, 2 and 9, the rotating mechanism 700 includes a second motor 710 and a second lever 720, the second lever 720 is also L-shaped, one end of the second lever 720 is connected to the second motor 710, and the other end is located on the moving track of the clamping station 350 and can push the clamp plate 352 and rotate relative to the bracket 351.

When the clamping station 350 reaches the rotating mechanism 700, the second motor 710 drives the second lever 720 to push the clamp plate 352 to rotate 180 ° (see fig. 9), so that the opening is upward for loading the packaging bag at the loading mechanism 200.

The working principle of the nitrogen-filled packaging device is as follows: the clamping station 350 reaches the feed mechanism 200, the first wedge 210 opens the clamp plate 352, and the belt conveyor transports the bag until it is placed in the clamping station 350. The clamping station 350 is then disengaged from the first wedge block 210 and the spring 354 urges the clamp plate 352 together. After the bag is conveyed to the turnover mechanism 400, the first motor 410 drives the first deflector rod 420 to turn the substrate 353 and the clamping plate 352 by 180 degrees, and then the bag is conveyed to the inflating mechanism 500, the clamping plate 352 is attached to the air suction pipe 560, the air suction pipe 560 enables the opening of the packaging bag at the through hole to be tightly attached to the inner wall, and the first air cylinder 510 and the third motor 530 drive the air suction pipe 540 and the air suction pipe 550 to be inserted into the packaging bag, so that nitrogen charging and air exchange are completed. After the nitrogen filling is completed, the nitrogen filling bag is conveyed to the sealing mechanism 600, the clamping plate 352 is slightly opened by the second wedge-shaped block 620, the bag opening is exposed, the sealing device 630 is driven by the second air cylinder 610 and the fourth motor 640 to complete the sealing, the clamping plate 352 is completely opened by the second wedge-shaped block 620, and the packaging bag falls onto the discharging slide way to complete the discharging. The clamping station 350 passes through the rotating mechanism 700, and the second motor 710 drives the second driving lever 720 to push the clamping station 350 to face upwards again, so as to facilitate reloading.

Use above-mentioned nitrogen packing plant, fill the nitrogen to the wrapping bag through the carousel formula structure, can guarantee the fresh of food, easy operation is convenient, and the structure is uncomplicated, and use cost is low, the sexual valence relative altitude. And the mode of filling nitrogen from the below makes nitrogen gas be difficult for revealing, guarantees to fill the effect of nitrogen.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A nitrogen-filled packaging device is characterized by comprising a workbench, a conveying mechanism, a turnover mechanism, an inflating mechanism and a sealing mechanism, wherein the conveying mechanism, the turnover mechanism, the inflating mechanism, the sealing mechanism and the rotating mechanism are all arranged on the workbench, and the turnover mechanism, the inflating mechanism, the sealing mechanism and the rotating mechanism are sequentially arranged along the conveying direction of the conveying mechanism;

2. The nitrogen-filled packaging device as claimed in claim 1, wherein a plurality of air-extracting holes are provided on the inner wall of the groove of the clamping plate, and the air-extracting holes are communicated with one side of the clamping plate away from the groove;

the inflation mechanism further comprises two exhaust pipes, the exhaust pipes are arranged in the annular grooves and located on two sides of the two clamping plates, and the two exhaust pipes can be respectively attached to the outer sides of the two clamping plates and communicated with the exhaust holes.

3. The nitrogen-filled packaging device as claimed in claim 1, further comprising a feeding mechanism disposed between the turnover mechanism and the swing mechanism, wherein the first wedge-shaped block is disposed at the feeding mechanism.

4. The nitrogen-filled packaging device of claim 2, further comprising a blanking slideway, wherein one end of the blanking slideway is arranged below the sealing mechanism, and the other end of the blanking slideway is arranged outside the workbench and is inclined downwards.

5. The nitrogen-filled packaging device as claimed in claim 3, wherein the two ends of the clamping plate are provided with baffles, the baffles are arranged towards the direction of approaching each other, and when the ends of the clamping plate far away from the base plate are attached to each other, the baffles of the two clamping plates are also attached to each other.