CN107651247B

CN107651247B - Packaging machine

Info

Publication number: CN107651247B
Application number: CN201710873027.5A
Authority: CN
Inventors: 赵晨
Original assignee: Jiangsu Sida Heavy Industry Co ltd
Current assignee: Jiangsu Sida Heavy Industry Co ltd
Priority date: 2017-09-25
Filing date: 2017-09-25
Publication date: 2023-11-03
Anticipated expiration: 2037-09-25
Also published as: CN107651247A

Abstract

The invention provides a packaging machine, and belongs to the technical field of machinery. The automatic packaging machine solves the technical problems of low automation degree and the like of the existing packaging machine. The packaging machine comprises a frame and a conveying platform fixed on the frame, wherein a plurality of groups of conveying brackets are arranged on the conveying platform, each group of conveying brackets comprises two conveying brackets arranged at intervals, two conveying brackets in the same group can clamp or release a paper box, each group of conveying brackets can synchronously move back and forth, and a dust collection mechanism capable of cleaning dust in the paper box and a partition board placing mechanism capable of automatically placing a partition board in the paper box are sequentially arranged on the frame along the conveying direction of the conveying brackets. The invention has the advantages of automatically cleaning the paper box and automatically placing the partition board.

Description

Packaging machine

Technical Field

The invention belongs to the technical field of machinery, and relates to a packaging machine.

Background

The paper box is widely applied as a common external package, and when the paper box is adopted for packaging in the prior art, the paper box is generally divided into manual packaging and automatic packaging, and the more frequently the automatic packaging is used due to high efficiency, but the full automation cannot be realized in the automatic packaging.

The existing packaging machine adopts a conveyor belt to realize the transfer of the cartons, and as the conveyor belt is not provided with a limit structure, the cartons can move relative to the conveyor belt in the process of advancing and stopping the cartons by the conveyor belt, so that the cartons cannot be accurately stopped on a station, and the packaging process is affected; when the cartons are combined, the cartons can be bent to form the cartons by slotting on the cartons, dust is generated in the slotting process, the combined cartons can be directly transferred to a packaging machine during automatic packaging, and no dust removing mechanism in the cartons is arranged by the packaging machine, so that the packaged cartons can carry dust, and food can be polluted during packaging of food products; meanwhile, the existing packaging machine cannot accurately stop on a station, and the partition plates with certain requirements on precision are manually placed, so that complete automatic packaging cannot be achieved.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a packaging machine, which can automatically clean a paper box and automatically place a partition board.

The aim of the invention can be achieved by the following technical scheme:

the utility model provides a packagine machine, includes the frame and fixes conveying platform in the frame, its characterized in that, be equipped with a plurality of groups conveying support on the conveying platform, every group conveying support includes the conveying support that two intervals set up, and two conveying supports homoenergetic in the same group press from both sides tightly or release the carton, every group conveying support can synchronous round trip movement, still be equipped with in proper order along conveying direction of conveying support in the frame and clear up clean dust absorption mechanism in the carton and can place the baffle in the carton with the baffle is placed the mechanism automatically.

The combined paper boxes are transferred through the transfer brackets on the transfer platform, and the paper boxes can intermittently and sequentially pass through the positions right below the dust suction mechanism and the baffle plate placing mechanism, and the paper boards are clamped by the two transfer brackets of the same group in the transfer process, so that the paper boards can be accurately transferred in place, and the requirements of automatic package of the paper boards can be met; meanwhile, dust generated during combination in the paper board can be removed through the dust collection mechanism, so that the cleanness and sanitation of the paper board are guaranteed, the safety requirements of food packaging can be met, and the partition board can be automatically placed by the partition board placing mechanism, so that the packaging efficiency of the paper box is improved.

In the packaging machine, the conveying platform is provided with a plurality of rollers, and the upper side surfaces of the rollers are flush with the table top of the conveying platform. The structure can reduce the resistance when the paper box is transferred.

In the packaging machine, baffles are fixed on two sides of the conveying platform. The baffles can define the direction of movement of the carton.

In the above-mentioned packagine machine, the spout has been opened along the length direction of conveying platform to conveying platform's middle part, conveying support's one end is located the spout, it has guide hole one and guide hole two to open on the conveying platform, guide hole one and direction Kong Erfen do not are located the both sides of spout, guide hole one runs through conveying platform and guide hole one and spout intercommunication along conveying platform's width direction, guide hole two runs through conveying platform and guide hole two and spout intercommunication along conveying platform's width direction, guide hole one and direction Kong Erjun are rectangular shape, guide hole one and guide hole two all arrange along conveying platform's length direction, wear to be equipped with the dwang in the guide hole one, dwang and conveying support's one end fixed connection just the dwang can drive conveying support swing, guide hole two wear to have the carriage release lever, the carriage release lever is connected with conveying support's one end, the carriage can be along conveying support's length direction back and forth. When the paper box is transferred, the transfer brackets are driven to move back and forth by the moving rods, the transfer brackets are swung by the rotating rods, when the two transfer brackets in the same group are vertical, the paper box is clamped between the two transfer brackets, after the paper box is moved in place, the two transfer brackets swing to be in a horizontal state, at the moment, the transfer brackets in the horizontal state are positioned in the sliding grooves, the bottom surface of the paper box is abutted to the table top of the transfer platform, so that the transfer brackets can return under the paper box under the driving of the moving rods, and the first guide holes and the second guide holes can respectively meet the movement of the rotating rods and the moving rods; through the structure, the intermittent transfer of the paper boxes can be realized, and the accuracy of the transfer is ensured.

In the above-mentioned packagine machine, dust absorption mechanism is including fixing the dust absorption bench in the frame and going up and down the crane that sets up on the dust absorption bench, the lower extreme of crane is fixed with the apron, the apron level sets up and is located conveying platform directly over, be close to border department on the apron and be fixed with a plurality of air nozzles, a plurality of the air nozzles pass the apron and set up towards, a plurality of the air nozzle passes through trachea and air pump intercommunication, the middle part of apron is fixed with the suction hood, the suction hood is located the below of apron, the upper end of suction hood passes the apron and communicates with the exhaust fan, exhaust fan and an exhaust pipe intercommunication.

The lifting frame moves up and down along the dust collection table through the lifting cylinder, the lifting table descends to the position where the upper edge of the cover plate abuts against the upper edge of the paperboard during dust collection, the upper port of the paperboard is closed through the cover plate, the air pump is started again to enable air to be sprayed out of the air nozzle, dust in the paper box can fly up through the sprayed air flow, the exhaust fan is simultaneously started, air with the dust is extracted from the paper box through the dust collection cover, dust generated during production in the paper box after dust collection for a period of time is removed, the lifting frame moves upwards after dust collection is completed, and the paper box is moved to the next station through the conveying support.

In the above-mentioned packagine machine, baffle placing mechanism includes the swivel becket and places the seat, the swivel becket rotates to be connected in the frame and is located conveying platform directly over, the vertical setting of swivel becket, place the seat and have two, two and place the seat and all fix on the swivel becket and two and place the seat symmetry setting, be provided with vacuum chuck on the seat of placing, vacuum chuck is located the outer end of placing the seat, vacuum chuck can place the seat relatively along the radial movement of swivel becket, vacuum chuck and place and be equipped with the spring that enables vacuum chuck to have all the time and place the seat and lean on the trend, the inner ring that is located the swivel becket in the frame is fixed with flexible cylinder, flexible cylinder is vertical down to be set up place the seat and rotate to flexible cylinder under the telescopic link of flexible cylinder can act on vacuum chuck and make vacuum chuck move towards conveying platform.

The conveying structure who has the conveying baffle directly over the swivel becket when using, conveying structure carries the baffle directly over the swivel becket, rotate the vacuum chuck that is to the swivel becket top and hold the baffle, the swivel becket rotates after grasping the baffle, the vacuum chuck who grasps the baffle can be along with rotating the position of swivel becket below, vacuum chuck orientation conveying platform just is located directly over the carton this moment, telescopic cylinder starts and pushes away vacuum chuck to the carton through telescopic cylinder's telescopic link, vacuum chuck gets into the carton and releases the baffle after, telescopic cylinder resets afterwards, vacuum chuck also resets again, accomplish the placing of baffle, place the carton with the baffle in through the swivel becket of constantly rotating is automatic, high efficiency and accuracy.

Compared with the prior art, the packaging machine has the advantage of meeting the requirements of automatic packaging of paperboards.

Drawings

Fig. 1 is a schematic cross-sectional view of the present packaging machine.

Fig. 2 is a schematic cross-sectional view of the transfer platform in the present packaging machine.

Fig. 3 is a schematic cross-sectional view of the dust suction mechanism in the present packaging machine.

Fig. 4 is a schematic cross-sectional view of the barrier placement mechanism of the present packaging machine.

In the figure, 1, a rack; 2. a transfer platform; 21. a baffle; 22. a chute; 23. a first guide hole; 231. a rotating lever; 232. a rotating motor; 24. a second guide hole; 241. a moving rod; 242. a bearing; 243. a moving motor; 244. a drive gear; 245. a rack; 25. a slide rail; 26. a fixing seat; 3. a conveying support; 31. a frame body; 32. a hinged sleeve; 4. a dust collection table; 41. a lifting frame; 42. a cover plate; 43. a sponge cushion; 44. an air tap; 441. an air pipe; 45. a dust hood; 451. an exhaust fan; 452. an exhaust pipe; 5. a rotating ring; 51. a ring body; 511. a fixed rod; 52. a placement seat; 521. a mounting hole; 522. an annular positioning groove; 53. a vacuum chuck; 531. a slide bar; 532. a convex ring; 54. a spring; 55. a telescopic cylinder; 56. a mounting base; 561. and (5) an installation port.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 to 4, the packaging machine comprises a frame 1 and a conveying platform 2 fixed on the frame 1, wherein a plurality of rollers are arranged on the conveying platform 2, and the upper side surfaces of the rollers are flush with the table top of the conveying platform 2. Baffles 21 are fixed on both sides of the conveying platform 2. Be equipped with a plurality of group's conveying support 3 on the conveying platform 2, every group conveying support 3 includes the conveying support 3 that two intervals set up, and two conveying supports 3 in the same group homoenergetic presss from both sides tightly or releases the carton, and every group conveying support 3 can make a round trip to move in step, still is equipped with clean dust absorption mechanism and can place the baffle in the carton with the baffle is placed the mechanism in automatic in the carton along conveying direction of conveying support 3 in proper order on the frame 1.

The middle part of conveying platform 2 has spout 22 along the length direction of conveying platform 2 to open, conveying support 3's one end is located spout 22, it has guide hole one 23 and guide hole two 24 to open on the conveying platform 2, guide hole one 23 and guide hole two 24 are located the both sides of spout 22 respectively, guide hole one 23 runs through conveying platform 2 and guide hole one 23 and spout 22 intercommunication along the width direction of conveying platform 2, guide hole two 24 runs through conveying platform 2 and guide hole two 24 and spout 22 intercommunication along the width direction of conveying platform 2, guide hole one 23 and guide hole two 24 are rectangular shape, guide hole one 23 and guide hole two 24 all are arranged along the length direction of conveying platform 2, wear to be equipped with dwang 231 in the guide hole one 23, dwang 231 and conveying support 3's one end fixed connection and dwang 231 can drive conveying support 3 swing, guide hole two 24 wear to be equipped with movable rod 241, movable rod 241 is connected with conveying support 3's one end, movable rod 241 can be moved forward and backward along the length direction of guide hole two 24. When the cartons are transferred, the transfer brackets 3 are driven to move back and forth by the moving rods 241, the transfer brackets 3 are swung by the rotating rods 231, when the two transfer brackets 3 in the same group are vertical, the two transfer brackets 3 clamp the cartons between, after the cartons are moved in place, the two transfer brackets 3 swing to be in a horizontal state, at the moment, the transfer brackets 3 in the horizontal state are positioned in the sliding grooves 22, the bottom surfaces of the cartons are abutted against the table top of the transfer platform 2, so that the transfer brackets 3 can return under the cartons under the driving of the moving rods 241, and the first guide holes 23 and the second guide holes 24 can respectively meet the movement of the rotating rods 231 and the moving rods 241; through the structure, the intermittent transfer of the paper boxes can be realized, and the accuracy of the transfer is ensured.

The conveying bracket 3 comprises an I-shaped frame body 31 and a hinge sleeve 32 fixed at one end of the frame body 31, the hinge sleeve 32 is integrally positioned in the chute 22, one end of a rotating rod 231 is inserted into one end of the hinge sleeve 32 and fixed with the hinge sleeve 32, one end of a moving rod 241 is inserted into the other end of the hinge sleeve 32, and the moving rod 241 can freely rotate around an axis relative to the hinge sleeve 32. The structure of the frame 31 can reduce the quality of the frame 31 under the condition that the contact surface between the frame 31 and the paper box is large, ensure that the paper box cannot incline horizontally in the transferring process, and ensure that the hinged sleeve 32 is connected with the rotating rod 231 and the moving rod 241 to ensure that the conveying support 3 swings and transfers stably.

The rotation rod 231 is fixed with the hinge sleeve 32 by a tight fit. The rotating rod 231 and the hinge sleeve 32 can be fixed in a tight fit mode, the rotating rod 231 can drive the hinge sleeve 32 to rotate, and the hinge sleeve 32 can drive the rotating rod 231 to synchronously move along with the conveying support 3. The moving rod 241 penetrates through one section of the hinge sleeve 32 and is fixedly provided with a bearing 242, the outer ring of the bearing 242 is tightly matched and fixed with the hinge sleeve 32, and the inner ring of the bearing 242 is fixed with the moving rod 241. The moving rod 241 can only move back and forth with the conveying bracket 3 by the bearing 242 without interfering with the swinging of the conveying bracket 3.

The two sides of the conveying platform 2 are respectively fixed with a sliding rail 25, the sliding rails 25 are parallel to the length direction of the sliding grooves 22, the two sliding rails 25 are respectively connected with a fixed seat 26 in a sliding manner, the outer ends of the rotating rods 231 penetrate out of the side faces of the conveying platform 2, the fixed seats 26 on the sliding rails 25 close to the rotating rods 231 are respectively fixed with a rotating motor 232, a motor shaft of each rotating motor 232 is fixedly connected with the rotating rod 231, the outer ends of the moving rods 241 penetrate out of the side faces of the conveying platform 2 and are fixedly connected with the corresponding fixed seats 26, the fixed seats 26 on the sliding rails 25 close to the moving rods 241 are respectively fixed with a moving motor 243, a driving gear 244 is fixed on a motor shaft of each moving motor 243, and racks 245 are fixed on the upper side faces of the sliding rails 25 close to the moving rods 241, and the driving gears 244 are meshed with the racks 245. The moving motor 243 and the rotating motor 232 can be supported through the slide rail 25 and the fixed seat 26 which can slide along the slide rail 25, so that the moving motor 243 is stably connected with the moving rod 241, and the rotating motor 232 is stably connected with the rotating rod 231; the moving motor 243 drives the driving gear 244 to move back and forth along the rack 245, so that the fixing base 26 can move back and forth along with the moving rod 241.

The two moving rods 241 and the two rotating rods 231 corresponding to the two conveying brackets 3 in the same group respectively correspond to the same fixed seat 26, the two moving rods 241 corresponding to the two conveying brackets 3 in the same group are driven to move by one moving motor 243, and the two rotating rods 231 corresponding to the two conveying brackets 3 in the same group are driven to rotate by two rotating motors 232 respectively. Two conveying brackets 3 in the same group are driven by a moving motor 243 during conveying, so that the two conveying brackets 3 are ensured to synchronously move, the transfer of the paper box is realized, and the two conveying brackets 3 can synchronously and reversely swing through the electric rotation of the two rotating motors 232, so that the paper box is clamped or released.

The dust collection mechanism comprises a dust collection table 4 fixed on the frame 1 and a lifting frame 41 arranged on the dust collection table 4 in a lifting manner, a cover plate 42 is fixed at the lower end of the lifting frame 41, the cover plate 42 is horizontally arranged and located right above the conveying platform 2, a plurality of air nozzles 44 are fixed on the cover plate 42 close to the edge, the plurality of air nozzles 44 penetrate through the cover plate 42 and are arranged towards the cover plate, the plurality of air nozzles 44 are communicated with an air pump through air pipes 441, a dust collection cover 45 is fixed in the middle of the cover plate 42, the dust collection cover 45 is located below the cover plate 42, the upper end of the dust collection cover 45 penetrates through the cover plate 42 and is communicated with an exhaust fan 451, and the exhaust fan 451 is communicated with an exhaust pipe 452.

The cover plate 42 is provided with a plurality of mounting holes 521, a joint bearing 242 is fixed in the mounting holes 521, and the air tap 44 is fixedly arranged on the inner ring of the joint bearing 242 in a penetrating way. The direction of the air tap 44 can be regulated through the knuckle bearing 242, and the direction of the air tap 44 at different positions can be regulated, so that the air tap 44 can blow dust in the carton. The plurality of air nozzles 44 are circumferentially distributed. The air tap 44 arranged in this way can fully cover every place of the carton, so that the air tap 44 can blow dust in the carton. A foam cushion 43 is adhered and fixed on the lower plate surface of the cover plate 42. The foam-rubber cushion 43 on the lower plate surface of the cover plate 42 can be abutted against the upper edge of the carton when dust is sucked, so that dust is prevented from flying out of the carton when dust is sucked, and the foam-rubber cushion 43 is softer and does not hurt the carton.

The dust hood 45 is in a frustum shape, one end of the dust hood 45 with a larger diameter is arranged downwards, and a conducting rod is connected between the dust hood 45 and the cover plate 42. The dust hood 45 with the structure can efficiently suck the air with dust away; the conductive rod can eliminate static electricity on the dust hood 45, so that dust can be discharged along with the exhaust fan 451, and the dust adsorbed on the dust hood 45 can be prevented from falling back into the paper box again.

The lifting frame 41 moves up and down along the dust collection table 4 through the lifting cylinder, the lifting table descends to the position where the upper edge of the cover plate 42 abuts against the upper edge of the paperboard during dust collection, the upper port of the paperboard is closed through the cover plate 42, then the air pump is started to enable air to be sprayed out of the air nozzle 44, dust in the paper box can fly up through sprayed air flow, the exhaust fan 451 is simultaneously started, air with the dust is extracted from the paper box through the dust collection cover 45 through the exhaust fan 451, dust generated during production in the paper box after a period of dust collection is removed, the lifting frame 41 moves upwards after dust collection is completed, and the paper box is moved to the next station through the conveying support 3.

The baffle placing mechanism comprises a rotating ring 5 and placing seats 52, the rotating ring 5 is rotationally connected to the frame 1 and is located right above the conveying platform 2, the rotating ring 5 is vertically arranged, the placing seats 52 are two, the two placing seats 52 are both fixed on the rotating ring 5 and are symmetrically arranged, vacuum chucks 53 are arranged on the placing seats 52, the vacuum chucks 53 are located at the outer ends of the placing seats 52, the vacuum chucks 53 can relatively place the placing seats 52 along the radial direction of the rotating ring 5, springs 54 which enable the vacuum chucks 53 to always have a trend of being close to the placing seats 52 are arranged between the vacuum chucks 53 and the placing seats 52, telescopic cylinders 55 are fixed on the inner ring of the rotating ring 5 on the frame 1, the telescopic cylinders 55 are vertically downwards arranged, and telescopic rods of the telescopic cylinders 55 can act on the vacuum chucks 53 when the placing seats 52 rotate right below the telescopic cylinders 55 so that the vacuum chucks 53 move towards the conveying platform 2.

The mounting hole 521 is formed in the placing seat 52 along the radial direction of the rotating ring 5, the sliding rod 531 is fixed on the back surface of the vacuum chuck 53, the sliding rod 531 penetrates through the mounting hole 521, the annular positioning groove 522 is formed in the inner wall of the mounting hole 521, the convex ring 532 is arranged on a section aligned with the mounting hole 521 on the sliding rod 531, the spring 54 is sleeved on the sliding rod 531, one end of the spring 54 abuts against the side surface of the convex ring 532, which is close to the vacuum chuck 53, and the other end of the spring 54 abuts against the placing seat 52. The vacuum chuck 53 can move along the radial direction of the rotating ring 5 by sliding the sliding rod 531 up and down along the mounting hole 521, and the vacuum chuck 53 always has a tendency to be abutted against the placement seat 52 by abutting the spring 54 against the convex ring 532.

The rotating ring 5 comprises two annular ring bodies 51, the two ring bodies 51 are fixed at intervals, the placing seat 52 is fixed between the two ring bodies 51, and the telescopic rod of the air cylinder can pass through between the two ring bodies 51. This structure can satisfy the installation of the placement base 52, and at the same time, can also make the telescopic rod of the cylinder act on the slide rod 531 in the placement base 52. The two ring bodies 51 are fixed near the edges by at least two fixing rods 511.

The frame 1 is fixedly provided with a mounting seat 56, the mounting seat 56 spans across the conveying platform 2, the middle part of the mounting seat 56 is provided with a mounting opening 561, the mounting opening 561 is positioned right above the conveying platform 2, the rotating ring 5 is positioned in the mounting opening 561, the two ring bodies 51 of the rotating ring 5 are all provided with connecting rings protruding outwards, the connecting rings are rotationally connected to the mounting seat 56, the mounting seat 56 is provided with a driving motor, and the driving motor is connected with one of the connecting rings through a belt. By this structure, stable rotation of the rotary ring 5 can be achieved.

The conveying structure who has the conveying baffle directly over the swivel becket 5 when using, conveying structure carries the baffle directly over to swivel becket 5, swivel becket 5 rotation behind the baffle is grabbed to the vacuum chuck 53 of swivel becket 5 top, the vacuum chuck 53 of grabbing the baffle can be along with rotating the position of swivel becket 5 below, vacuum chuck 53 orientation conveying platform 2 and lie in the carton directly over this moment, telescopic cylinder 55 starts and pushes away vacuum chuck 53 to the carton through telescopic cylinder 55's telescopic link, the baffle is released after vacuum chuck 53 gets into the carton, telescopic cylinder 55 resets afterwards, vacuum chuck 53 also resets again, accomplish the placing of baffle, place the baffle in the carton through the swivel becket 5 of constantly rotating automatically, it is efficient and accurate.

The combined paper boxes are transferred through the transfer brackets 3 on the transfer platform 2, and the paper boxes can intermittently and sequentially pass through the positions right below the dust suction mechanism and the baffle plate placing mechanism, and the paper boards are clamped by the two transfer brackets 3 of the same group in the transfer process, so that the paper boards can be accurately transferred in place, and the requirements of automatic package of the paper boards can be met; meanwhile, dust generated during combination in the paper board can be removed through the dust collection mechanism, so that the cleanness and sanitation of the paper board are guaranteed, the safety requirements of food packaging can be met, and the partition board can be automatically placed by the partition board placing mechanism, so that the packaging efficiency of the paper box is improved.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The packaging machine comprises a frame and a conveying platform fixed on the frame, and is characterized in that a plurality of rollers are arranged on the conveying platform, the upper side faces of the rollers are flush with the table top of the conveying platform, baffles are fixed on two sides of the conveying platform, a plurality of groups of conveying supports are arranged on the conveying platform, each group of conveying supports comprises two conveying supports arranged at intervals, two conveying supports in the same group can clamp or release a paper box, each group of conveying supports can synchronously move back and forth, and a dust collection mechanism capable of cleaning dust in the paper box and a baffle placing mechanism capable of automatically placing the baffle in the paper box are sequentially arranged on the frame along the conveying direction of the conveying supports; the middle part of conveying platform is opened along conveying platform's length direction has the spout, conveying support's one end is located the spout, it has guide hole one and guide hole two to open on the conveying platform, guide hole one and direction Kong Erfen do not are located the both sides of spout, guide hole one runs through conveying platform and guide hole one and spout intercommunication along conveying platform's width direction, guide hole two runs through conveying platform and guide hole two and spout intercommunication along conveying platform's width direction, guide hole one and direction Kong Erjun are rectangular shape, guide hole one and guide hole two all arrange along conveying platform's length direction, wear to have the dwang in the guide hole one, dwang and conveying support's one end fixed connection just the dwang can drive conveying support swing, guide hole two wear to have the carriage release lever, the carriage release lever is connected with conveying support's one end, the carriage release lever can be along conveying support's length direction back and forth.

2. The packaging machine of claim 1, wherein the dust collection mechanism comprises a dust collection table fixed on the frame and a lifting frame arranged on the dust collection table in a lifting manner, a cover plate is fixed at the lower end of the lifting frame, the cover plate is horizontally arranged and positioned right above the conveying platform, a plurality of air nozzles are fixed on the cover plate close to the edge, the air nozzles penetrate through the cover plate and are arranged towards the cover plate, the air nozzles are communicated with the air pump through air pipes, a dust collection cover is fixed in the middle of the cover plate, the dust collection cover is positioned below the cover plate, the upper end of the dust collection cover penetrates through the cover plate and is communicated with an exhaust fan, and the exhaust fan is communicated with an exhaust pipe.

3. The packaging machine according to claim 1, wherein the separator placing mechanism comprises a rotating ring and placing seats, the rotating ring is rotatably connected to the frame and is located right above the conveying platform, the rotating ring is vertically arranged, the placing seats are two, the two placing seats are both fixed on the rotating ring and symmetrically arranged, the placing seats are provided with vacuum chucks, the vacuum chucks are located at the outer ends of the placing seats, the vacuum chucks can relatively move along the radial direction of the rotating ring, springs which enable the vacuum chucks to always have a trend of being close to the placing seats are arranged between the vacuum chucks and the placing seats, an inner ring located on the rotating ring on the frame is fixedly provided with a telescopic cylinder which is vertically arranged downwards, and when the placing seats rotate right below the telescopic cylinder, telescopic rods of the telescopic cylinder can act on the vacuum chucks to enable the vacuum chucks to move towards the conveying platform.