CN113044329B

CN113044329B - Packaging machine adopting plastic packaging bags

Info

Publication number: CN113044329B
Application number: CN202110264180.4A
Authority: CN
Inventors: 张红涛
Original assignee: Zhengzhou Weipu Mechanical Equipment Co ltd
Current assignee: Zhengzhou Zlink Machinery And Equipment Co ltd
Priority date: 2021-03-11
Filing date: 2021-03-11
Publication date: 2022-07-22
Anticipated expiration: 2041-03-11
Also published as: CN113044329A

Abstract

The utility model belongs to the technical field of a packagine machine's technique and specifically relates to an adopt packagine machine of plastic packaging bag is related to, it includes the frame and sets gradually material conveying system, molding system, vertical banding system and the horizontal banding system in the frame, horizontal banding system includes two conveyor and sets up the horizontal sealing device between two conveyor, horizontal sealing device includes the supporting seat, goes up heat-seal seat, heat-seal seat and the power component that heat-seal seat reciprocated down in heat-seal seat and the drive, go up heat-seal seat and the vertical sliding fit of lower heat-seal seat on the supporting seat, the intermediate position of going up heat-seal seat is provided with the cutter, the position that corresponds with the cutter on the heat-seal seat down has seted up the abdicating grooving, the cutter is connected with vertical driving piece, vertical driving piece is installed on last heat-seal seat. This application has and cuts plastic packaging bag and horizontal banding synchronous, reduces the positional deviation of cutting and horizontal banding.

Description

Packaging machine adopting plastic packaging bags

Technical Field

The utility model belongs to the technical field of a packagine machine's technique and specifically relates to an adopt packagine machine of plastic packaging bag.

Background

In the process of producing the wet tissues or the flour cloths, the wet tissues or the flour cloths are required to be placed in the plastic packaging bag, the plastic packaging bag is in a strip shape in the automatic processing process, then the plurality of stacked flour cloths or wet tissues are conveyed to the position of the plastic packaging bag, the wet tissues or the flour cloths are wrapped in the plastic packaging bag by the plastic packaging bag, and then the plastic packaging bag is longitudinally and transversely sealed by the longitudinal and transverse sealing edges of the plastic packaging bag to form the plastic packaging bag, and finally the plastic packaging bag is cut to ensure that each plastic packaging bag is internally provided with the wet tissues or the flour cloths.

The wet tissue packaging machine is generally provided with a plastic packaging bag conveying system and a material conveying system, the plastic packaging bag conveying system is used for unreeling and conveying belt-shaped plastic packaging bags, the material conveying system is used for conveying stacked wet tissues or facial tissues, a forming mechanism is arranged at the intersection of the material conveying system and the plastic packaging bag conveying system in the conveying process, the forming mechanism forms the belt-shaped plastic packaging bags, and then the wet tissues or the facial tissues are packaged through longitudinal edge sealing, transverse edge sealing and a cutting mechanism.

However, when the plastic packaging bag is cut after being transversely sealed, the cutting position of the plastic packaging bag often deviates from the position of the transverse sealed edge, and particularly when the plastic packaging bag is packaged at a high speed, the deviation is larger.

Disclosure of Invention

In order to solve the problem of cutting and transverse edge sealing position deviation of plastic packaging bags, the application provides a packaging machine adopting the plastic packaging bags.

The application provides an adopt packagine machine of plastic packaging bag adopts following technical scheme:

the utility model provides an adopt plastic packaging bag's packagine machine, includes the frame and sets gradually material conveying system, molding system, vertical banding system and the horizontal banding system in the frame, horizontal banding system includes two conveyor and sets up the horizontal sealing device between two conveyor, horizontal sealing device includes the power component that the heat-seal seat reciprocated with lower heat-seal seat in supporting seat, last heat-seal seat, lower heat-seal seat and the drive, go up the vertical sliding fit of heat-seal seat under and on the supporting seat, the intermediate position of going up the heat-seal seat is provided with the cutter, the position that corresponds with the cutter on the heat-seal seat down has seted up the grooving of stepping down, the cutter is connected with vertical driving piece, vertical driving piece is installed on last heat-seal seat.

Through adopting above-mentioned technical scheme, during the use, in the position department of forming system wraps up the plastic packaging bag with wet piece of cloth, successively carry out the heat-seal to the plastic packaging bag by vertical banding system and horizontal banding system again, when carrying out horizontal banding, reciprocate through last heat-seal seat and lower heat-seal seat and carry out the centre gripping to the plastic packaging bag, in-process through last heat-seal seat and heat-seal seat down to the plastic packaging bag of centre gripping heats, the cutter that sets up simultaneously in last heat-seal seat drives under the effect of vertical driving piece, make the cutter cut the position of the horizontal heat-seal of plastic packaging bag, thereby make the synchronization of heat-seal and cutting, reduce the position deviation of cutting and horizontal banding.

Preferably, a synchronizing device is connected to the two conveying devices, the transverse sealing device is slidably fitted on the rack, the sliding direction of the transverse sealing device on the rack is parallel to the conveying direction of the conveying devices, a moving device for driving the transverse sealing device to move back and forth is connected to the transverse sealing device, and when the moving directions of the transverse sealing device and the conveying devices are the same, the moving speed of the transverse sealing device is the same as the conveying speed of the conveying devices; and a front pressing seat and a rear pressing seat are respectively arranged above the two conveying devices.

Through adopting above-mentioned technical scheme, compress tightly the seat with preceding and compress tightly the seat with two conveyor cooperations respectively to the plastic packaging bag with the back to the position that compresses tightly is located the both sides of violently sealing the device, and is the same with the moving speed of violently sealing the device and conveyor's conveying speed under mobile device's effect, when making violently sealing the device to the plastic packaging bag heat-seal, plastic packaging bag and violently sealing the device synchronous motion reduce the plastic packaging bag skew.

Preferably, the conveying device comprises a moving frame, a conveying belt and a driving roller; the moving frame is in sliding fit with the rack, a first driven roller and a second driven roller are arranged at two ends of the moving frame respectively, the first driven roller is rotatably connected to one end, close to the transverse sealing device, of the moving frame, the second driven roller is rotatably connected to the rack, a third driven roller is arranged below the moving frame, the driving roller is located below the moving frame, and the conveying belt is sequentially in transmission connection with the driving roller, the second driven roller, the first driven roller and the third driven roller and then onto the driving roller; the synchronous device is connected to the driving rollers of the two conveying devices, and the moving frames of the two conveying devices are connected with a control device for controlling the two moving frames to approach or leave.

Through adopting above-mentioned technical scheme, remove a sliding fit in the frame, carry out the in-process of continuous conveyor plastic packaging bag at the drive roll, because preceding pressing base and back pressing base press from both sides two conveyer belts with removing the frame respectively, thereby along with horizontal sealing device synchronous motion through removing the frame, a conveying speed and horizontal sealing device for guaranteeing the conveyer belt are synchronous, the length variation of the conveyer belt between drive roll and third driven voller is used for balancing the distance variation between first driven voller and the second driven voller, thereby guarantee the continuous rotation of drive roll.

Preferably, the control device comprises push plates, the two moving frames are respectively and fixedly provided with at least one push plate, sliding grooves are formed in the push plates, bumps are arranged in the sliding grooves, the distance between the highest points of the two sliding grooves in the two push plates is smaller than the distance between the lowest points of the two sliding grooves, and the bumps are installed on the lower heat seal seat.

Through adopting the above technical scheme, it sets up a push pedal to fix respectively on two removal framves, set up the spout in the push pedal, the in-process that heat-seal seat reciprocated under, the lug is located the spout and removes, it is close to or keep away from each other to drive two removal framves, when heat-seal seat is located the minimum under, two removal framves remove nearest position under the effect of lug, two conveyer belts are placed to the convenient plastic packaging bag that will need the cutting, then when heat-seal seat rebound down, remove the farthest distance through two removal framves, the heat-seal seat carries out the heat-seal with last heat-seal seat cooperation down conveniently.

Preferably, the conveying device positioned at the upstream of the transverse sealing device is provided with an exhaust device, the exhaust device comprises a base body, an exhaust belt and two transmission rollers, the base body is installed on the rack, the two transmission rollers are rotatably connected onto the base body, the exhaust belt is in transmission connection onto the two transmission rollers, and at least one transmission roller is driven by a synchronizing device.

Through adopting above-mentioned technical scheme, horizontal sealing device's upper reaches set up exhaust apparatus, are connected driving roller and synchronizer to exhaust belt rotates under driving roller's effect, thereby makes exhaust belt the same with the conveying speed of conveyer belt, and is more steady to the transport of plastic packaging bag.

Preferably, the synchronizing device comprises a fourth driving part, a first belt, a second belt, a first synchronizing wheel and a second synchronizing wheel, the diameters of the first synchronizing wheel and the second synchronizing wheel are equal, the fourth driving part is mounted on the rack, the two driving rollers are respectively provided with the second synchronizing wheel, one driving roller is provided with the first synchronizing wheel, the first belt is in transmission connection with the fourth driving part and the two first synchronizing wheels, and the second belt is in transmission connection with the two second synchronizing wheels.

By adopting the technical scheme, the fourth driving part drives the first belt, the first belt drives the first synchronizing wheel, and the first synchronizing wheel and the second synchronizing wheel are connected on one driving roller, so that the two driving rollers can be driven by the second belt, and the driving rotating speed of the driving roller and the driving roller is further ensured.

Preferably, the moving device comprises a fifth driving part, a swing rod, a driving seat and a driving shaft, the fifth driving part is installed on the rack, one end of the swing rod is rotatably connected to the rack, the driving seat is in sliding fit with the swing rod and is rotatably connected to the driving shaft, the driving seat and the driving shaft are not coincident with the center line of the driving shaft, the fifth driving part is connected to the driving shaft, a long hole is formed in one end, far away from the end rotatably connected with the rack, of the swing rod, and a connecting column fixed to the supporting seat is arranged in the long hole.

By adopting the technical scheme, the fifth driving piece is fixed on the machine mount, when the fifth driving piece is started, the fifth driving piece drives the driving shaft to rotate, the driving seat is in sliding fit on the swing rod, and the rotating axis of the driving seat and the driving shaft is not overlapped with the axis of the driving shaft, so that the driving shaft drives the swing rod to swing, and then the supporting seat is pushed to reciprocate by the connecting column arranged on the supporting seat.

Preferably, the molding system includes the former and sets up the device that props the membrane on the former, prop the membrane device and include mounting bracket, adjusting part and two and prop the membrane claw, the mounting bracket sets up on the former, adjusting part installs on the mounting bracket, two prop the one end of membrane claw and connect on adjusting part, the other end is used for the butt to be in the upstream of former at the plastic packaging bag.

Through adopting above-mentioned technical scheme, two prop the membrane claw and set up on adjusting part to two prop membrane claws butt and be in the upper reaches of former at the plastic packaging bag, make and prop the membrane claw and prop the plastic packaging bag, reduce the plastic packaging bag and take place the crease.

Preferably, the adjusting part is including setting up control screw, horizontal guide and the slope guide arm on the mounting bracket, control screw rotates to be connected on the mounting bracket, and horizontal guide threaded connection is on control screw, be provided with two sliding blocks on the horizontal guide, the slope guide has two and is the splayed setting, and sliding block sliding fit is on slope guide and horizontal guide, prop and be provided with the straight rail of slope between membrane claw and the sliding block, prop the membrane claw and install on the straight rail of slope.

Through adopting above-mentioned technical scheme, control screw rotates, and horizontal guide on the control screw removes along control screw length direction, and two sliding blocks that are located on the horizontal guide slide on the straight rail of slope along with the in-process that horizontal guide removed to can make the distance between two sliding blocks adjust, the plastic packaging bag of the different width of the membrane claw that props of convenient installation on the sliding block supports.

Preferably, be provided with the track on the supporting seat, the track level sets up, and sliding fit is provided with two cam grooves on the track, be provided with the cam piece in the cam groove, the cam piece is installed on last heat-seal seat, two the distance of cam groove upper end is less than the distance of two cam groove lower extremes, two fixed picture peg that is provided with respectively on the cam groove, two picture peg one end set up relatively and are used for butt plastic packaging bag's both sides.

Through adopting above-mentioned technical scheme, the track level sets up, and two cam grooves that sliding fit set up on the track can slide along orbital length direction, because the cam piece is located the cam groove, the cam piece is along with last heat-seal seat when removing, and the cam piece is pushing away two cam grooves and is keeping away from or be close to, makes two picture pegs of fixing on the cam groove carry out the butt to the both sides of plastic packaging bag, carries out folding plastic to plastic packaging bag.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the plastic packaging bag is clamped through the up-and-down movement of the upper heat sealing seat and the lower heat sealing seat, the plastic packaging bag is heated through the upper heat sealing seat and the lower heat sealing seat in the clamping process, and meanwhile, a cutter arranged in the upper heat sealing seat is driven under the action of a vertical driving piece to cut the transverse heat-sealed position of the plastic packaging bag, so that the heat sealing and the cutting are synchronous, and the position deviation of the cutting and the transverse edge sealing is reduced;

2. through compressing tightly the seat with preceding and compressing tightly the seat with two conveyor cooperations respectively to the plastic packaging bag to the position that compresses tightly is located the both sides of violently sealing the device, and is the same with the rate of motion of violently sealing the device and conveyor's conveying speed under mobile device's effect, when making violently sealing the device to the plastic packaging bag heat-seal, plastic packaging bag and violently sealing the device synchronous motion reduce the plastic packaging bag skew.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic view of the material handling system and the longitudinal edge banding system in positional relationship;

FIG. 3 is a schematic view of a molding system;

FIG. 4 is a schematic view of the structure of the base plate;

FIG. 5 is a schematic view of an exploded configuration of the longitudinal edge banding system;

FIG. 6 is a schematic view of the configuration of the lateral edge banding system;

FIG. 7 is a schematic view of the structure of the horizontal sealing device;

FIG. 8 is a schematic view of an exploded configuration of the upper and lower heat seal bases;

FIG. 9 is a schematic view of a cross-sectional configuration of a lateral edge sealing system;

fig. 10 is a schematic view of the mounting structure of the synchronization device.

Description of the reference numerals: 1. a frame; 2. a plastic package conveying system; 3. a material delivery system; 31. a conveying table; 32. a chain; 33. a sprocket; 34. a first driving member; 35. a yielding groove; 36. a deflector rod; 37. a limiting baffle; 4. a molding system; 41. a former; 411. a first beveled edge; 412. a second beveled edge; 42. a base plate; 43. a front shaping plate; 44. a rear shaping plate; 45. a film supporting device; 451. film supporting claws; 452. a mounting frame; 453. an adjustment assembly; 4531. controlling the screw; 4532. a horizontal guide rod; 4533. inclining the guide rod; 4534. a slider; 4535. a pointer; 4536. a graduated scale; 4537. a straight inclined rail; 4538. mounting blocks; 46. a channel; 5. a longitudinal edge sealing system; 51. a longitudinal sealing device; 511. a first edge sealing wheel; 512. a second edge sealing wheel; 52. a drive device; 521. a second driving member; 522. a rotating shaft; 523. a synchronous belt; 524. a drive bevel gear; 525. a driven bevel gear; 526. a driving pulley; 527. a driven pulley; 528. a drive belt; 529. tensioning the belt pulley; 53. a heater; 54. a mounting base; 55. a sliding seat; 56. a horizontal adjusting screw; 57. a vertical adjusting screw; 6. a lateral edge sealing system; 61. a conveying device; 611. a movable frame; 612. a conveyor belt; 6121. a first stage; 6122. a second stage; 6123. a third stage; 6124. a fourth stage; 613. a drive roll; 614. a horizontal slide rail; 615. a first driven roller; 616. a second driven roller; 617. a third driven roller; 618. pushing the plate; 6181. a chute; 619. a bump; 62. a transverse sealing device; 621. a supporting base; 622. an upper heat sealing seat; 623. a lower heat seal seat; 624. a power assembly; 6241. a third driving member; 6242. a lower crankshaft; 6243. an upper crankshaft; 6244. a transmission belt; 6245. a connecting rod; 63. a synchronization device; 631. a fourth drive; 632. a pinch roller; 633. a first belt; 634. a second belt; 635. a first synchronization wheel; 636. a second synchronizing wheel; 64. a front pressing seat; 65. a rear pressing seat; 651. a driver; 66. a mobile device; 661. a fifth driving member; 662. a swing rod; 663. a guide rail; 664. a driving seat; 665. a drive shaft; 666. a strip hole; 667. connecting columns; 67. a cutter; 671. a vertical drive; 672. a abdication grooving; 673. a handle knife; 674. a handle aperture; 68. an exhaust device; 681. a base body; 682. an exhaust belt; 683. a driving roller; 684. adjusting a rod; 71. a track; 72. a cam slot; 73. a cam block; 74. and (4) inserting plates.

Detailed Description

The present application is described in further detail below with reference to figures 1-10.

The embodiment of the application discloses a packaging machine adopting plastic packaging bags. Referring to fig. 1, the device comprises a rack 1, a plastic packaging bag conveying system 2, a material conveying system 3, a forming system 4, a longitudinal edge sealing system 5 and a transverse edge sealing system 6, wherein the plastic packaging bag conveying system 2 is mounted on the rack 1 and used for unreeling a strip-shaped plastic packaging bag and is positioned above the material conveying system 3, the material conveying system 3 is horizontally arranged on the rack 1 and used for conveying wet tissues or facial tissues on the material conveying system 3, the forming system 4 is positioned at the tail end of the material conveying system 3, the plastic packaging bag is folded into a cylindrical shape at the position of the forming system 4 and is wrapped in the cylindrical plastic packaging bag, the longitudinal edge sealing system 5 and the transverse edge sealing system 6 are sequentially arranged on the rack 1 along the conveying direction of the materials, the longitudinal edge sealing system 5 performs longitudinal edge sealing on the cylindrical plastic packaging bag, and the longitudinal edge sealing is performed along the length direction of the plastic packaging bag, the transverse edge sealing system 6 carries out transverse edge sealing on the cylindrical plastic packaging bag, and the transverse edge sealing is carried out in a way of being perpendicular to the length direction of the plastic packaging bag.

Referring to fig. 2, the material conveying system 3 includes a conveying table 31, a chain 32, a chain wheel 33 and a first driving member 34, the first driving member 34 is a motor, and may further select a servo motor or a step motor, the conveying table 31 is fixed on the frame 1, a abdicating groove 35 is formed in the middle of the conveying table 31, wet tissues or facial tissues are placed on the upper surface of the conveying table 31, and both sides of the wet tissues or facial tissues are placed on both sides of the abdicating groove 35, the chain 32 is installed below the conveying table 31, the first driving member 34 is fixed on the frame 1, the first driving member 34 is connected with the chain wheel 33, the chain wheel 33 is rotatably installed on the frame 1, the first driving member 34 drives the chain wheel 33 to rotate, there are two chain wheels 33, the chain 32 is drivingly connected to the chain wheel 33, the length direction of the chain 32 is arranged along the length direction of the abdicating groove 35, a plurality of shift levers 36 are arranged on the chain 32, the shift levers 36 are uniformly arranged along the length direction of the chain 32, in the process that the shifting lever 36 rotates along with the chain 32, one end, far away from the chain 32, of the shifting lever 36 can enter the abdicating groove 35 and extend out of the abdicating groove 35 to the upper surface of the conveying table 31, two limiting baffle plates 37 are arranged on the upper surface of the conveying table 31, the two limiting baffle plates 37 are arranged at intervals, the distance between the two limiting baffle plates 37 is equal to the width of the wet tissues or the facial tissues, when the stacked wet tissues or the facial tissues are placed between the two limiting baffle plates 37, the shifting lever 36 moves along the length direction of the abdicating groove 35 when the shifting lever 36 rotates along with the chain 32, the wet tissues or the facial tissues can be pushed to move on the conveying table 31 through the shifting lever 36, and therefore the wet tissues or the facial tissues are conveyed.

Referring to fig. 3, the forming system 4 includes two symmetrically disposed formers 41, the formers 41 are made of L-shaped plates, a bottom plate 42 is fixedly disposed on the frame 1, the bottom plate 42 is fixed on the frame 1, the bottom plate 42 is horizontally disposed, one side of the two formers 41 is fixed on the upper surface of the bottom plate 42, a forming channel 46 is disposed between the two formers 41 at an interval, the other side of the two formers 41 is disposed perpendicular to the bottom plate 42 and has a width equal to the width of the wet tissue or facial tissue, and the wet tissue or facial tissue is conveyed between the two formers 41. A first bevel 411 and a second bevel 412 are provided at one end of former 41, first bevel 411 is provided on the side of former 41 perpendicular to bottom plate 42, second bevel 412 is formed on the side of former 41 fixed on bottom plate 42, second bevel 412 on two formers 41 are arranged in V-shape and the included angle of the V-shape corresponds to the end of channel 46, and the end of table 31 is inserted between two second bevels 412 in isosceles triangle. The first inclined edge 411 has one end connected to an end of the second inclined edge 412 remote from the passage 46 and the other end disposed obliquely upward in the transport direction away from the wet wipes or facial tissues. After the plastic packaging bag is led out from the tail end of the plastic packaging bag conveying system 2, the plastic packaging bag inclines downwards to the position of the first inclined edge 411, the center of the plastic packaging bag corresponds to the position of the channel 46, in the process of conveying the plastic packaging bag downstream, wet tissues or facial tissues at the tail end of the material conveying table 31 are wrapped in the plastic packaging bag, the plastic packaging bag is wrapped into a cylindrical shape under the action of the first inclined edge 411 and the second inclined edge 412, two side edges of the strip-shaped plastic packaging bag are inserted into the channel 46, and in the moving process of the plastic packaging bag, the wet tissues or facial tissues in the plastic packaging bag and the plastic packaging bag move synchronously.

Referring to fig. 4, the longitudinal edge sealing system 5 is disposed under the bottom plate 42, a front shaping plate 43 and a rear shaping plate 44 are disposed on the lower surface of the bottom plate 42, the front shaping plate 43 and the rear shaping plate 44 are respectively disposed at the front end and the tail end of the channel 46, the longitudinal edge sealing system 5 is disposed between the front shaping plate 43 and the rear shaping plate 44, the front shaping plate 43 has two pieces and is respectively vertically disposed at two sides of the channel 46, the front shaping plate 43 is fixed on the bottom plate 42, the front shaping plate 43 blocks two side edges of the plastic packaging bag at vertical positions, and thus when entering the longitudinal edge sealing system 5, the edge sealing widths of two side edges of the plastic packaging bag are relatively uniform. The rear shaping plate 44 is fixed on the bottom plate 42, the rear shaping plate 44 is blocked at the tail end of the channel 46, the rear shaping plate 44 and the lower surface of the bottom edge of one side of the channel 46 are arranged at intervals, and when the plastic packaging bag passing through the longitudinal edge sealing system 5 reaches the position of the rear shaping plate 44, the formed longitudinal sealing edge is bent in the direction parallel to the bottom plate 42, so that the longitudinal sealing edge on the plastic packaging bag is shaped and bent towards one side.

Referring to fig. 3, a film supporting device 45 is arranged on the upper surface of the bottom plate 42, the film supporting device 45 comprises two film supporting claws 451, a mounting frame 452 and an adjusting component 453, the mounting frame 452 is fixed on the bottom plate 42, the adjusting component 453 is provided with the mounting frame 452, the two film supporting claws 451 are mounted on the adjusting component 453, the distance between the two film supporting claws 451 is adjusted under the action of the adjusting component 453, one ends of the two film supporting claws 451 are respectively used for abutting against two sides of a plastic packaging bag, the position where the film supporting claws 451 abut against the plastic packaging bag is located at the upstream of the two formers 41, the plastic packaging bag can be supported by the two film supporting claws 451, and the formation of creases in the plastic packaging bag is reduced. Adjustment assembly 453 includes a control screw 4531, a horizontal guide 4532, and a tilt guide 4533 provided on mounting block 452, horizontal guide 4532 being horizontally disposed perpendicular to the length direction of former 41, tilt guide 4533 being fixed to mounting block 452, and two tilt guides 4533, two tilt guides 4533 are arranged in a V-shape, each tilt guide 4533 is provided with a slide block 4534, slide block 4534 is slidably fitted to tilt guide 4533 and slide block 4534 is slidably fitted to horizontal guide 4532, control screw 4531 is rotatably coupled to mounting block 452, control screw 4531 is disposed along the length of former 41 in the longitudinal direction thereof, the middle of horizontal guide 4532 is threadedly coupled to control screw 4531, the distance between the two sliding blocks 4534 can be moved closer to or farther from each other by rotating the control screw 4531, the two film supporting claws 451 are respectively connected to the two sliding blocks 4534, so that the distance between the two film supporting claws 451 is adjusted by controlling the screw 4531. Meanwhile, a pointer 4535 is fixedly arranged on the horizontal guide rod 4532, a graduated scale 4536 is arranged on the mounting frame 452, the length direction of the graduated scale 4536 is parallel to the length direction of the control screw 4531, and when the pointer 4535 moves along with the horizontal guide rod 4532, the value of the pointer 4535 corresponding to the graduated scale 4536 can reflect the distance between the two film supporting claws 451. An inclined straight rail 4537 is arranged between the film supporting claw 451 and the sliding block 4534, one end of the inclined straight rail 4537 is fixed on the sliding block 4534, the other end of the inclined straight rail 4537 is arranged obliquely upwards away from the conveying direction of the plastic packaging bag, a mounting block 4538 is arranged on the inclined straight rail 4537, the position of the mounting block 4538 in the length direction of the inclined straight rail 4537 is adjustable, and the film supporting claw 451 is fixed on the mounting block 4538.

Referring to fig. 5, the longitudinal edge sealing system 5 includes two sets of longitudinal sealing devices 51 sequentially arranged along a conveying direction of the plastic packaging bags, each longitudinal sealing device 51 includes a first edge sealing wheel 511 and a second edge sealing wheel 512, axes of the first edge sealing wheel 511 and the second edge sealing wheel 512 are both vertically arranged, the first edge sealing wheel 511 and the second edge sealing wheel 512 are respectively located at two sides below the channel 46, when the plastic packaging bags pass through the channel 46, the first edge sealing wheel 511 and the second edge sealing wheel 512 relatively press two sides of the plastic packaging bags, the two first edge sealing wheels 511 are connected with a driving device 52, and the driving device 52 drives the two first edge sealing wheels 511 to synchronously rotate, so that the plastic packaging bags are conveyed downstream under the action of the driving device 52. Heaters 53 are arranged in the first edge sealing wheel 511 and the second edge sealing wheel 512, the first edge sealing wheel 511 and the second edge sealing wheel 512 are heated by the heaters 53, and when the first edge sealing wheel 511 and the second edge sealing wheel 512 clamp two side edges of the plastic packaging bag for conveying, the plastic packaging bag is sealed longitudinally.

Referring to fig. 5, the driving device 52 includes a second driving element 521, two rotating shafts 522 and a synchronous belt 523, the rack 1 is provided with the mounting seat 54, the number of the rotating shafts 522 is two, the rotating shafts 522 are rotatably mounted on the mounting seat 54, the synchronous belt 523 is connected to the two rotating shafts 522 in a transmission manner, the synchronous belt 523 can be selected as a belt or a toothed belt, and the second driving element 521 is a motor and can also be selected as a servo motor or a stepping motor. The second driving member 521 is mounted on the mounting base 54 and connected to a rotating shaft 522, under the action of the second driving member 521 and the synchronous belt 523, the two rotating shafts 522 rotate synchronously, a driving bevel gear 524 is coaxially and fixedly arranged at the end of the rotating shaft 522, a driven bevel gear 525 is coaxially connected to each of the two first edge sealing wheels 511, and the two driving bevel gears 524 are respectively engaged with the driven bevel gear 525, so that the two first edge sealing wheels 511 can rotate synchronously, and the two sets of longitudinal sealing devices 51 can convey plastic packaging bags synchronously. A sliding seat 55 is respectively arranged below the two second edge sealing wheels 512, the sliding seat 55 is in sliding fit with the mounting seat 54, the sliding direction of the sliding seat 55 on the mounting seat 54 faces the first edge sealing wheel 511, a horizontal adjusting screw 56 is connected to the sliding seat 55, the length direction of the horizontal adjusting screw 56 is parallel to the sliding direction of the sliding seat 55 on the mounting seat 54, the horizontal adjusting screw 56 is in threaded connection with the sliding seat 55, the horizontal adjusting screw 56 is rotatably connected to the mounting seat 54, when the horizontal adjusting screw 56 is rotated, the horizontal adjusting screw 56 drives the sliding seat 55 to move, so that the second edge sealing wheel 512 is close to or far away from the first edge sealing wheel 511, the distance between the first edge sealing wheel 511 and the second edge sealing wheel 512 is adjusted, and the plastic packaging bags with different thicknesses and the edge sealing pressure of the plastic packaging bags are adapted.

Referring to fig. 5, in order to adjust the heights of the first and second hemming wheels 511 and 512 up and down, the first and second hemming wheels 511 and 512 adjust the width of the longitudinal hem seal of the plastic packing bag. In mount 54 and vertical adjusting screw 57, vertical adjusting screw 57 sets up vertically, connects vertical adjusting screw 57's rotation on frame 1, connects mount 54 threaded connection on vertical adjusting screw 57, rotates vertical adjusting screw 57 and makes mount 54 adjust at the ascending height of vertical direction. The drive device 52 further comprises a driving pulley 526 fixedly arranged coaxially on the output shaft of the second driver 521, a driven pulley 527 fixedly arranged coaxially on one of the shafts 522, a transmission belt 528 connected between the driving pulley 526 and the driven pulley 527, and a tension pulley 529 arranged on the transmission belt 528, wherein the transmission belt 528 effectively connects the transmission between the driving pulley 526 and the driven pulley 527 through the tension pulley 529 during the upward movement of the mounting seat 54 by the vertical adjusting screw 57.

Referring to fig. 6 and 7, a transverse edge banding system 6 is attached to the end of the bottom panel 42 and plastic packages exiting the end of the bottom panel 42 enter the transverse edge banding system 6. The transverse edge sealing system 6 comprises two conveying devices 61 and a transverse sealing device 62 positioned between the two conveying devices 61, wherein the two conveying devices 61 are sequentially arranged along the conveying direction of plastic packaging bags, a synchronizing device 63 is connected to the two conveying devices 61, the conveying speed of the two conveying devices 61 is kept the same through the synchronizing device 63, two front pressing seats 64 and two rear pressing seats 65 are respectively arranged on two sides of the transverse sealing device 62, when the transverse sealing device 62 carries out heat sealing on the plastic packaging bags, the front pressing seats 64 and the rear pressing seats 65 respectively press the two plastic packaging bags on two sides of the transverse sealing device 62, the transverse sealing device 62 is connected with a moving device 66, the transverse sealing device 62 horizontally reciprocates through the moving device 66, when the transverse sealing device 62 carries out heat sealing on the plastic packaging bags, the transverse sealing device 62 moves downstream along with the same speed as the conveying devices 61 under the action of the moving device 66, when the transverse sealing device 62 completes transverse sealing, the transverse sealing device 62 is opened and moved upstream in the conveying direction of the plastic packaging bags by the moving device 66, so that the transverse sealing device 62 reaches the position where the next plastic packaging bag needs to be heat-sealed.

Referring to fig. 7 and 8, the transverse sealing device 62 comprises a supporting base 621, an upper heat-sealing base 622, a lower heat-sealing base 623 and a power assembly 624 for driving the upper heat-sealing base 622 and the lower heat-sealing base 623 to move up and down or away from each other, the supporting base 621 is horizontally and slidably fitted on the frame 1, the sliding direction of the supporting base 621 on the frame 1 is parallel to the conveying direction of the plastic packaging bag, the upper heat-sealing base 622 and the lower heat-sealing base 623 are vertically and slidably fitted on the supporting base 621, the length directions of the upper heat-sealing base 622 and the lower heat-sealing base 623 are perpendicular to the conveying direction of the plastic packaging bag, the upper heat-sealing base 622 and the lower heat-sealing base 623 can heat the plastic packaging bag and clamp the plastic packaging bag when the upper heat-sealing base 622 and the lower heat-sealing base 623 are relatively close to each other under the action of the power assembly 624, the cutting knife 67 is arranged at the middle position of the upper heat-sealing base 622, and the length direction of the cutting knife 67 is perpendicular to the length direction of the plastic packaging bag, the vertical driving piece 671 is fixedly arranged on the upper heat sealing seat 622, the vertical driving piece 671 can be selected to be an air cylinder or an oil cylinder, the output end of the vertical driving piece 671 is fixed on the cutter 67, and the vertical driving piece 671 drives the cutter 67 up and down. While the upper heat-seal seat 622 and the lower heat-seal seat 623 are sandwiching the plastic packaging bag, the vertical driving member 671 cuts the cutter 67 downward; a yielding cutting groove 672 is formed in the position, corresponding to the cutter 67, of the lower heat sealing seat 623, and the cutter 67 can cut the plastic packaging bags downwards under the action of the vertical driving piece 671 and then enters the yielding cutting groove 672, so that each plastic packaging bag is cut off. A handle knife 673 is arranged on the upper heat-seal seat 622, a vertical driving element 671 is connected to the handle knife 673, or the handle knife 673 and the cutter 67 are integrated or connected to the same vertical driving element 671, a handle hole 674 is formed in the position, corresponding to the handle knife 673, of the lower heat-seal seat 623, the handle knife 673 can be inserted into the handle hole 674 when the handle knife 673 cuts the plastic packaging bag downwards, and the handle of the plastic packaging bag is manufactured.

Referring to fig. 7, the power assembly 624 includes a third driving member 6241, a lower crankshaft 6242 and an upper crankshaft 6243, the upper crankshaft 6243 and the lower crankshaft 6242 are rotatably connected to the supporting seat 621, the lower crankshaft 6242 and the upper crankshaft 6243 are respectively located below the lower heat sealing seat 623 and above the upper heat sealing seat 622, a transmission belt 6244 is disposed between the lower crankshaft 6242 and the upper crankshaft 6243, the transmission belt 6244 can be selected from a belt or a toothed belt, the transmission belt 6244 is drivingly connected to the lower crankshaft 6242 and the upper crankshaft 6243, a connecting rod 6245 is respectively disposed at two ends of the lower crankshaft 6242 and two ends of the lower crankshaft 6242, one end of the connecting rod 6245 is rotatably connected to the upper crankshaft 6243 or the lower crankshaft 6242, one end of the connecting rod 6245 connected to the upper crankshaft 6243 and far from the upper crankshaft 6243 is rotatably connected to the upper heat sealing seat 622, one end of the connecting rod 6245 connected to the lower crankshaft 6242 and far from the lower crankshaft 6242 is rotatably connected to the lower heat sealing seat 623 and acts on the upper crankshaft 6243 and the lower crankshaft 6242, the distance between the upper heat-seal seat 622 and the lower heat-seal seat 623 is relatively close to or away from each other; the third driving element 6241 is fixed on the supporting seat 621, the third driving element 6241 can be selected from a motor, a servo motor or a stepping motor, the third driving element 6241 is connected with the lower crankshaft 6242, and the lower crankshaft 6242 is driven by the third driving element 6241.

Referring to fig. 9, the conveying device 61 includes a moving frame 611, a conveying belt 612 and a driving roller 613, a horizontal slide rail 614 is fixedly disposed on the frame 1, the horizontal slide rail 614 is disposed parallel to the conveying direction of the plastic package, and the moving frame 611 is slidably fitted on the horizontal slide rail 614 to move the moving frame 611 on the horizontal slide rail 614 parallel to the conveying direction of the plastic package. A first driven roller 615 is arranged at one end of the two moving frames 611 close to the transverse sealing device 62, the first driven roller 615 is rotationally connected to the moving frames 611, a second driven roller 616 is arranged at one end of the moving frames 611 far away from the transverse sealing device 62, the second driven roller 616 is rotationally connected to the frame 1, a third driven roller 617 is arranged below the moving frames 611, the third driven roller 617 is rotationally connected to the moving frames 611, the driving roller 613 is arranged below the moving frames 611, the driving roller 613 is rotationally connected to the frame 1, the synchronizing device 63 is connected to the driving roller 613 of the two conveying devices 61, the conveying belt 612 is sequentially in transmission connection with the driving roller 613, the second driven roller 616, the first driven roller 615, the third driven roller 617 and the driving roller 613, so that the conveying belt 612 sequentially forms a first section 6121, a second section 6122, a third section 6123 and a fourth section 6124, when the driving rollers 613 on the two conveying devices 61 rotate synchronously, the conveyor belts 612 in the two conveyors 61 are also rotated synchronously, so that the two plastic packages on the two conveyors 61 move synchronously.

Referring to fig. 9, at least one push plate 618 is respectively disposed at one end of the two moving frames 611 close to the transverse sealing device 62, a sliding slot 6181 is formed in the push plate 618, the sliding slots 6181 in the two push plates 618 are arranged symmetrically in a splayed manner on two sides of the transverse sealing device 62, and the splayed small opening formed by the two sliding slots 6181 is located above the large opening. A bump 619 is arranged in each sliding groove 6181, the bump 619 is positioned in the sliding groove 6181, the bump 619 can be changed into a roller, the bump 619 is fixedly or rotatably connected on the lower heat seal seat 623, and because the two moving frames 611 are in sliding fit with the horizontal sliding rails 614, when the lower heat seal seat 623 moves downwards, the bump 619 moves along the sliding groove 6181, the two moving frames 611 can be drawn together towards the middle, the distance between the two conveying belts 612 is reduced, and the plastic packaging bag can be transferred from the conveying belt 612 positioned at the upstream of the transverse sealing device 62 to the conveying belt 612 positioned at the downstream of the transverse sealing device 62; then, in the process that the lower heat sealing seat 623 moves upwards, because the width of the lower heat sealing seat 623 is greater than the minimum distance required by the two conveying belts 612 to convey the plastic packaging bag, the lower heat sealing seat 623 drives the two bumps 619 to move upwards, the bumps 619 move in the sliding grooves 6181 and push the two moving frames 611 away from each other, so that the lower heat sealing seat 623 and the upper heat sealing seat 622 can carry out heat sealing on the plastic packaging bag. The front pressing seat 64 and the rear pressing seat 65 are both mounted on an upper heat-seal seat 622, a driver 651 is arranged between the rear pressing seat 65 and the upper heat-seal seat 622, the driver 651 can be selected from an air cylinder or a hydraulic cylinder, the rear pressing seat 65 is positioned above the conveyer belt 612 at the downstream of the transverse sealing device 62, and the front pressing seat 64 is positioned above the conveyer belt 612 at the upstream of the transverse sealing device 62; when the upper heat seal holder 622 is moved downward, the driver 651 first brings the rear press holder 65 downward, so that the upper heat seal holder 622 and the lower heat seal holder 623 can further discharge the gas in the plastic packaging bag by sandwiching the plastic packaging bag before heat-sealing the plastic packaging bag. Preceding pressing seat 64 and last heat-seal seat 622 fixed connection make preceding pressing seat 64 and last heat-seal seat 622 compress tightly the plastic packaging bag simultaneously, and the plastic packaging bag compresses tightly seat 64 and back through preceding pressing seat and 65 pressure on two conveyer belts 612, and the conveying speed with conveyer belt 612 equals the translation speed of horizontal sealing device 62 to make horizontal sealing device 62 remove along with the plastic packaging bag, it is long for guaranteeing the heat-seal. In order to keep the conveying belts 612 conveying the wet wipes or facial wipes, the conveying belts 612 positioned at the upstream of the transverse sealing device 62 are stacked at the position of the second section 6122 through the first section 6121 conveyed between the driving roller 613 and the second driven roller 616, the second section 6122 is lengthened by the movement of the moving frame 611 relative to the second driven roller 616, the third section 6123 is stopped, the conveying length of the first section 6121 is supplemented by the shortening of the fourth section 6124 between the third driven roller 617 and the driving roller 613, and the continuous rotation of the driving roller 613 is ensured.

Referring to fig. 10, an exhaust unit 68 is disposed above the conveying unit 61 located upstream of the transverse sealing unit 62, the exhaust unit 68 includes a seat 681, an exhaust belt 682 and two driving rollers 683, the two driving rollers 683 are rotatably connected to the seat 681, the exhaust belt 682 is in driving connection with the two driving rollers 683, the exhaust belt 682 and the conveying belt 612 are arranged in parallel and at intervals, when the plastic packaging bag passes through the exhaust belt 682, the exhaust belt 682 presses the plastic packaging bag downwards to exhaust a part of the gas in the plastic packaging bag, so as to prevent the plastic packaging bag from being too large. In order to rotate the exhaust belt 682 and the conveying belt 612 synchronously and prevent the plastic packaging bag from shifting when the exhaust belt 682 and the conveying belt 612 are not in synchronous transmission, the synchronizing device 63 is connected with a driving roller 683, so that the synchronizing device 63 drives the conveying belt 612 and the exhaust belt 682 simultaneously. With the vertical sliding fit of pedestal 681 in frame 1 to be provided with at frame 1 and adjust pole 684, adjust the vertical setting of pole 684, will adjust pole 684 and rotate to connect on frame 1, adjust pole 684 and be the screw rod, with pedestal 681 threaded connection on adjusting pole 684, can rotate to adjust pole 684 and drive exhaust belt 682 with pedestal 681 from top to bottom, thereby can exhaust to the plastic packaging bag of different thickness.

Referring to fig. 10, the synchronizing device 63 includes a fourth driving member 631, a pressing wheel 632, a first belt 633, a second belt 634, a first synchronizing wheel 635 and a second synchronizing wheel 636, the diameters of the first synchronizing wheel 635 and the second synchronizing wheel 636 are equal, a second synchronizing wheel 636 is installed on each of the two driving rollers 613, one of the driving rollers 613 is provided with the first synchronizing wheel 635, a first synchronizing wheel 635 is coaxially and fixedly installed on the driving roller 683, the first belt 633 is connected to the two first synchronizing wheels 635 and the fourth driving member 631, the fourth driving member 631 may be a motor, a servo motor or a stepping motor, the second belt 634 is in transmission connection with the two second synchronizing wheels 636, the pressing wheel 632 is installed on the frame 1 and abuts against the first belt 631 to tension the first belt 633, the fourth driving member 631 drives the first belt 633, the first synchronous wheel 635 is driven by the first belt 633, and the first synchronous wheel 635 on the drive roller 613 drives the drive roller 613 to rotate, so that the two drive rollers 613 are synchronously rotated by the second belt 634, and the two conveyor belts 612 and the exhaust belt 682 are rotated at the same rotation speed under the action of the fourth driving part 631. The first belt 633 and the second belt 634 may also be provided as toothed belts.

Referring to fig. 10, the moving device 66 includes a fifth driving member 661, a swinging rod 662, a guide rail 663, a driving seat 664 and a driving shaft 665, the driving shaft 665 is rotatably connected to the frame 1, the driving seat 664 is rotatably connected to the driving shaft 665, and an axis of the driving seat 664 rotatably connected to the driving shaft 665 is not coincident with an axis of the driving shaft 665, the fifth driving member 661 may be a motor, a servo motor or a stepping motor, the fifth driving member 661 is connected to the driving shaft 665, the driving seat 664 is slidably fitted on the guide rail 663 by rotating the driving shaft 665 through the fifth driving member 661. One end of the oscillating rod 662 is rotatably connected to the machine frame 1, the guide rail 663 is fixed with the oscillating rod 662, the length direction of the guide rail 663 is the same as the length direction of the oscillating rod 662, and when the driving shaft 665 rotates, the oscillating rod 662 rotates around the rotating axis of the machine frame 1 due to the driving seat 664. Pendulum rod 662 is kept away from the one end of being connected with frame 1 rotation and has been seted up rectangular hole 666, the length direction of rectangular hole 666 and the length direction parallel arrangement of pendulum rod 662, be provided with spliced pole 667 on the supporting seat 621, spliced pole 667 is cylindrical, spliced pole 667 one end is fixed on supporting seat 621, the other end is inserted in rectangular hole 666 and the side butt of spliced pole 667 and rectangular hole 666, at the wobbling in-process of pendulum rod 662, spliced pole 667 slides along the length direction of rectangular hole 666, make the pendulum rod 662 drive the reciprocal horizontal migration of supporting seat 621.

Referring to fig. 7, a rail 71 is provided on the supporting base 621, the rail 71 is horizontally disposed, and the length direction of the rail 71 is perpendicular to the conveying direction of the plastic packaging bag, two cam grooves 72 are slidably fitted on the rail 71, one cam block 73 is disposed in each of the two cam grooves 72, and the cam block 73 is fixed to the upper heat-seal base 622. When the upper heat seal seat 622 is at the lowest position, the distance between the two cam grooves 72 mounted on the rail 71 is minimum; when the upper heat-sealing seat 622 is at the highest position, the distance between the two cam grooves 72 arranged on the track 71 is the largest, and when the upper heat-sealing seat 622 moves downwards, the two cam grooves 72 move relatively close to each other, the inserting plates 74 are fixedly arranged on the cam grooves 72, the two inserting plates 74 on the two cam grooves 72 are oppositely arranged, the two opposite ends of the inserting plates 74 are arranged into a triangle, when the two cam grooves 72 move to the position of the smallest distance, the triangular end parts of the two inserting plates 74 abut against the two sides of the plastic packaging bag, and the plastic packaging bag is folded before being transversely heat-sealed.

The working process of the embodiment of the application is as follows:

the fifth driving member 661 works continuously, the fifth driving member 661 drives the driving shaft 665 to rotate, the driving shaft 665 drives the swing rod 662 to swing through the driving seat 664, and the supporting seat 621 connected with the swing rod 662 through the connecting post 667 reciprocates on the frame 1; the third driving element 6241 works continuously, the third driving element 6241 drives the upper crankshaft 6243 and the lower crankshaft 6242 to rotate simultaneously, and the upper heat-sealing seat 622 and the lower heat-sealing seat 623 reciprocate vertically under the action of the upper crankshaft 6243 and the lower crankshaft 6242, when the upper heat-sealing seat 622 and the lower heat-sealing seat 623 move in the direction of clamping the plastic packaging bag, the fifth driving element 661 drives the supporting seat 621 to move along the conveying direction of the plastic packaging bag, conversely, when the upper heat-sealing seat 622 and the lower heat-sealing seat 623 are away from each other, the fifth driving element 661 drives the supporting seat 621 to move along the reverse direction of the conveying direction of the plastic packaging bag, so that the upper heat-sealing seat 622 and the lower heat-sealing seat 623 correspond to the next position needing heat sealing; meanwhile, the fourth driving part 631 continuously operates, and the fourth driving part 631 drives the two driving rollers 613 simultaneously to equalize the rotation speeds of the two conveying belts 612; the moving frame 611 is connected to the machine frame 1 in a sliding manner, a push plate 618 arranged on the moving frame 611 is provided with a sliding groove 6181, and a bump 619 arranged on the lower heat seal seat 623 is arranged in the sliding groove 6181, so that when the lower heat seal seat 623 reciprocates along with the supporting seat 621, the moving frame 611 can be driven to reciprocate, and the conveying belt 612 connected to the moving frame 611 and the upper heat seal seat 622 on the supporting seat 621 can be ensured to synchronously move; in addition, in the process that the bump 619 moves up and down along with the lower heat seal seat 623, the two moving frames 611 can be close to or away from each other, and when the two moving frames 611 are close to each other, the latter plastic packaging bag needing heat seal can be conveniently transferred from the upstream conveying belt 612 to the downstream conveying belt 612; the cutter 67 cuts the plastic packing bag by the vertical driving unit 671 while the upper and lower heat sealing seats 622 and 623 clamp the plastic packing bag relatively, thereby completing the continuous heat sealing and cutting of the plastic packing bag.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an adopt plastic packaging bag's packagine machine, includes frame (1) and sets gradually material conveying system (3), molding system (4), vertical banding system (5) and horizontal banding system (6) in frame (1), its characterized in that: the transverse edge sealing system (6) comprises two conveying devices (61) and a transverse sealing device (62) arranged between the two conveying devices (61), wherein the transverse sealing device (62) comprises a supporting seat (621), an upper heat sealing seat (622), a lower heat sealing seat (623) and a power assembly (624) for driving the upper heat sealing seat (622) and the lower heat sealing seat (623) to move up and down, the upper heat sealing seat (622) and the lower heat sealing seat (623) are vertically matched on the supporting seat (621) in a sliding mode, a cutter (67) is arranged in the middle of the upper heat sealing seat (622), a position-yielding cutting groove (672) is formed in the position, corresponding to the cutter (67), of the lower heat sealing seat (623), the cutter (67) is connected with a vertical driving piece (671), and the vertical driving piece (671) is installed on the upper heat sealing seat (622);

the two conveying devices (61) are connected with a synchronizing device (63), the transverse sealing devices (62) are in sliding fit with the rack (1), the sliding direction of the transverse sealing devices (62) on the rack (1) is parallel to the conveying direction of the conveying devices (61), the transverse sealing devices (62) are connected with a moving device (66) for driving the transverse sealing devices (62) to move in a reciprocating mode, the moving directions of the transverse sealing devices (62) and the conveying devices (61) are the same, and the moving speed of the transverse sealing devices (62) is the same as the conveying speed of the conveying devices (61); a front pressing seat (64) and a rear pressing seat (65) are respectively arranged above the two conveying devices (61);

the front pressing seat (64) and the rear pressing seat (65) are both arranged on the upper heat-seal seat (622);

the conveying device (61) comprises a moving frame (611), a conveying belt (612) and a driving roller (613); a moving frame (611) is in sliding fit with a rack (1), a first driven roller (615) and a second driven roller (616) are arranged at two ends of the moving frame (611) respectively, the first driven roller (615) is connected to one end, close to a transverse sealing device (62), of the moving frame (611) in a rotating mode, the second driven roller (616) is connected to the rack (1) in a rotating mode, a third driven roller (617) is arranged below the moving frame (611), a driving roller (613) is located below the moving frame (611), and a conveying belt (612) is sequentially connected to a driving roller (613), the second driven roller (616), the first driven roller (615) and the third driven roller (617) in a transmission mode and then enters the driving roller (613); the synchronous device (63) is connected to the driving rollers (613) of the two conveying devices (61), and a control device for controlling the two moving frames (611) to approach or depart from each other is connected to the moving frame (611) of the two conveying devices (61);

the control device comprises push plates (618), at least one push plate (618) is fixedly arranged on each of the two moving frames (611), sliding grooves (6181) are formed in the push plates (618), bumps (619) are arranged in the sliding grooves (6181), the distance between the highest points of the two sliding grooves (6181) on the two push plates (618) is smaller than the distance between the lowest points of the two sliding grooves (6181), and the bumps (619) are arranged on the lower heat seal seat (623);

the moving device (66) comprises a fifth driving piece (661), a swinging rod (662), a driving seat (664) and a driving shaft (665), the fifth driving piece (661) is installed on the rack (1), one end of the swinging rod (662) is rotatably connected to the rack (1), the driving seat (664) is in sliding fit on the swinging rod (662) to rotatably connect the driving seat (664) to the driving shaft (665), the rotating axes of the driving seat (664) and the driving shaft (665) are not coincident with the central line of the driving shaft (665), the fifth driving piece (661) is connected with the driving shaft (665), one end of the swinging rod (662) far away from the end rotatably connected with the rack (1) is provided with a long hole (666), and a connecting column (667) fixed on the supporting seat (621) is arranged in the long hole (666);

an exhaust device (68) is arranged on a conveying device (61) located at the upstream of the transverse sealing device (62), the exhaust device (68) comprises a seat body (681), an exhaust belt (682) and two transmission rollers (683), the seat body (681) is installed on the rack (1), the two transmission rollers (683) are rotationally connected to the seat body (681), the exhaust belt (682) is in transmission connection with the two transmission rollers (683), and at least one transmission roller (683) is driven by a synchronizing device (63);

the synchronous device (63) comprises a fourth driving part (631), a first belt (633), a second belt (634), a first synchronous wheel (635) and a second synchronous wheel (636), the diameters of the first synchronous wheel (635) and the second synchronous wheel (636) are equal, the fourth driving part (631) is installed on the rack (1), the second synchronous wheel (636) is arranged on the two driving rollers (613), the first synchronous wheel (635) is arranged on one driving roller (613), the first synchronous wheel (635) is arranged on the transmission roller (683), the first belt (633) is in transmission connection with the fourth driving part (631) and the two first synchronous wheels (635), and the second belt (634) is in transmission connection with the two second synchronous wheels (636).

2. The packaging machine using plastic packing bags according to claim 1, wherein: the molding system (4) comprises a former (41) and a film supporting device (45) arranged on the former (41), wherein the film supporting device (45) comprises a mounting frame (452), an adjusting component (453) and two film supporting claws (451), the mounting frame (452) is arranged on the former (41), the adjusting component (453) is mounted on the mounting frame (452), one end of each of the two film supporting claws (451) is connected to the adjusting component (453), and the other end of each film supporting claw is used for abutting against a plastic packaging bag and is located at the upstream of the former (41).

3. The packing machine using plastic packing bag as claimed in claim 2, wherein: the adjusting component (453) comprises a control screw rod (4531), a horizontal guide rod (4532) and an inclined guide rod (4533) which are arranged on a mounting rack (452), the control screw rod (4531) is rotatably connected to the mounting rack (452), the horizontal guide rod (4532) is in threaded connection with the control screw rod (4531), two sliding blocks (4534) are arranged on the horizontal guide rod (4532), the inclined guide rods (4533) are arranged in a splayed manner, the sliding blocks (4534) are in sliding fit with the inclined guide rod (4533) and the horizontal guide rod (4532), an inclined straight rail (4537) is arranged between the film supporting claw (451) and the sliding block (4534), and the film supporting claw (451) is mounted on the inclined straight rail (4537).

4. The packaging machine using plastic packing bags according to claim 1, wherein: be provided with track (71) on supporting seat (621), track (71) level sets up, and sliding fit is provided with two cam grooves (72) on track (71), be provided with cam block (73) in cam groove (72), install on last heat-seal seat (622) cam block (73), two the distance of cam groove (72) upper end is less than the distance of two cam groove (72) lower extremes, two fixed picture peg (74) that are provided with respectively on cam groove (72), two picture peg (74) one end sets up relatively and are used for the both sides of butt plastic packaging bag.