CN109383882B - Film packaging sealing and cutting device based on cylinder film - Google Patents

Abstract

The invention discloses a film packaging sealing and cutting device based on a barrel film, which comprises a workbench, wherein a film feeding mechanism and a film stretching mechanism are respectively arranged on two opposite sides of the workbench, and a mouth stretching mechanism and a first sealing and cutting mechanism are respectively arranged on the other two opposite sides of the workbench; the mouth opening mechanism comprises a transfer mechanism, a pair of upper tongue pieces and lower tongue pieces which can be mutually close to or far away from each other along the vertical direction are arranged on the transfer mechanism, the transfer mechanism can drive the upper tongue pieces and the lower tongue pieces to be inserted into the packaging film, and the packaging film is opened to be fed with the objects to be packaged; the first sealing and cutting mechanism is used for flattening the opening of the packaging body and welding the cut; when the film packaging, sealing and cutting device based on the tubular film is used for film coating, automatic film feeding, automatic film stretching and automatic opening and sealing and cutting of the packaging film can be realized, so that the degree of mechanization of the tubular film packaging is effectively improved, and the working efficiency can be greatly improved.

Description

Film packaging sealing and cutting device based on cylinder film

Technical Field

The invention relates to the technical field of film packaging equipment, in particular to a film packaging sealing and cutting device based on a cylindrical film.

Background

In order to protect the outer package of the product from scratching and moisture and beautify the appearance of the product, a layer of plastic film needs to be packaged on the outer surface of the product package. The film adopted in the existing film packaging technology comprises a single-layer film and a double-layer cylindrical film, and when the single-layer film is adopted for packaging, a machine device can be adopted to wind the film on a product package, and the product package is placed into a thermoplastic furnace for thermoplastic molding. When the cylindrical film is adopted for packaging, the packaging bag is manually opened at present, then the product is filled in the packaging bag, then the sealing machine is used for sealing the packaging bag, and finally the packaging bag is placed in a thermoplastic furnace.

Disclosure of Invention

The invention aims to provide a film packaging, sealing and cutting device based on a cylindrical film, which has high mechanization degree and high packaging speed.

In order to achieve the purpose, the invention discloses a film packaging sealing and cutting device based on a cylindrical film, which comprises a workbench, wherein the workbench is used for bearing a packaging body, two opposite sides of the workbench are respectively provided with a film feeding mechanism and a film stretching mechanism, and the other two opposite sides of the workbench are respectively provided with a mouth stretching mechanism and a first sealing and cutting mechanism; the film feeding mechanism is used for outputting cylindrical packaging films at intervals in a segmented manner; the film stretching mechanism is used for horizontally stretching a section of the packaging film output by the film feeding mechanism above the workbench in a tensioning state; the mouth opening mechanism comprises a transfer mechanism, a pair of upper tongue pieces and lower tongue pieces which can be close to or far away from each other along the vertical direction are arranged on the transfer mechanism, the transfer mechanism can drive the upper tongue pieces and the lower tongue pieces to be inserted into the packaging film, and the packaging film is opened to be fed with a to-be-packaged object; the first sealing and cutting mechanism is used for flattening the opening of the packaging body and welding the cut.

Compared with the prior art, the film packaging sealing and cutting device based on the cylinder film is provided with a film feeding mechanism, a film stretching mechanism, a mouth stretching mechanism and a first sealing and cutting mechanism at the periphery of a workbench, the cylinder-shaped packaging film is pre-manufactured and wound on a material tray, the upper film mechanism outputs the packaging film on the material tray at intervals in a segmented manner, when the length of the output packaging film meets the requirement, the film is temporarily discharged, then the packaging film is stretched and stretched above the workbench by the film stretching mechanism opposite to the upper film mechanism, then the mouth stretching mechanism is started, a transfer mechanism drives an upper tongue piece and a lower tongue piece which are close together to be inserted into the packaging film, then the upper tongue piece and the lower tongue piece are separated from each other, the packaging film is opened, at the moment, the upper tongue piece is supported at the upper side of an opening of the packaging film, the lower tongue piece is supported at the lower side of the opening of the packaging film, then a to-be-packaged object is pushed into the packaging film, the, finally, cutting off redundant films at the opening of the packaging film by adopting a first sealing and cutting mechanism so as to enable the sealing line to be tightly attached to the packaging body, and welding the opening for sealing while cutting the films; therefore, the film packaging sealing and cutting device based on the tubular film realizes automatic film feeding, automatic film stretching and automatic sealing and cutting of the packaging film, so that the mechanization degree of the tubular film packaging is effectively improved, and the working efficiency can be greatly improved.

Preferably, the film packaging sealing and cutting device based on the tubular film further comprises an opening mechanism arranged at the front end of the opening mechanism, the opening mechanism comprises a pair of upper suction film component and a pair of lower suction film component which are arranged oppositely, and the upper film and the lower film at the opening of the packaging film on the opening mechanism are separated up and down through the upper suction film component and the lower suction film component respectively.

Preferably, the film stretching mechanism comprises a film pulling rod penetrating through the packaging film output by the film feeding mechanism, and two clamping pieces arranged opposite to the output port of the film feeding mechanism, both the film pulling rod and the two clamping pieces can be horizontally far away from or close to the film feeding mechanism, and when the packaging film is pulled out to a certain length by the film pulling rod, the two clamping pieces respectively clamp two ends of one side of the packaging film; the packaging film is horizontally stretched above the workbench by pulling two sides of the packaging film through the clamping piece and the film feeding mechanism.

Preferably, the film packaging and sealing device based on the tube film further comprises a second sealing and cutting mechanism arranged at the output port of the upper film mechanism, and the second sealing and cutting mechanism is used for cutting off a section of the packaging film output by the upper film mechanism and welding the cut.

Preferably, go up the tongue piece with lower tongue piece is installed on a mounting bracket, transfer mechanism can drive the mounting bracket is relative the workstation is from top to bottom, left and right sides, seesaw, a mounting bracket packing support column, install a fixed arm and a digging arm on the support column, it installs to go up the tongue piece on the digging arm, the tongue piece is installed down on the fixed arm, still install one on the mounting bracket and can drive the digging arm is relative gliding driver about the fixed arm.

Preferably, an upper pressing rod capable of performing telescopic motion relative to the upper tongue piece is mounted above the upper tongue piece on the movable arm, a lower pressing rod capable of performing telescopic motion relative to the lower tongue piece is mounted below the lower tongue piece on the fixed arm, the upper pressing rod is used for pressing an upper film at an opening of the packaging film on the upper tongue piece, and the lower pressing rod is used for pressing a lower film at the opening of the packaging film on the lower tongue piece.

Preferably, the upper tongue piece and/or the lower tongue piece are/is provided with air blowing holes, and the air blowing holes are used for blowing air into the packaging film so as to completely open the packaging film.

Preferably, the film packaging sealing and cutting device based on the barrel film further comprises a pushing mechanism, the pushing mechanism comprises a push rod and a slide, the slide transversely extends to the first sealing and cutting mechanism from the front end of the workbench, the push rod is connected with the slide in a sliding fit manner, and the push rod is used for pushing the packaging body to the first sealing and cutting mechanism.

Preferably, the film package sealing and cutting device based on the cylinder film is characterized by further comprising a film arranging device which is butted with the first sealing and cutting mechanism and is used for wiping the side wall and/or the end wall of the package body output from the first sealing and cutting mechanism.

Preferably, the film feeding mechanism comprises:

a frame;

the eleventh sliding rail is arranged on the rack and vertically extends along the rack;

the first film winding roller is used for the packaging film to wind, and the first film winding roller is transversely arranged on the rack and is positioned at the upper end of the eleventh sliding rail;

the gravity roller is used for being wound by the packaging film, is transversely arranged on the rack and is freely matched with the eleventh sliding rail in a sliding manner;

and the output mechanism is arranged at the upper end of the rack and is used for sending the packaging film out in sections.

Drawings

Fig. 1 is a schematic perspective view of a film packaging and sealing device based on a cylindrical film.

Fig. 2 is a schematic perspective view of the mouth opening mechanism in fig. 1.

Fig. 3 is a schematic perspective view of the film stretching mechanism in fig. 1.

Fig. 4 is a schematic view of the installation positions of the film feeding mechanism, the opening mechanism and the film stretching mechanism in fig. 1.

Fig. 5 is a perspective view of the opening mechanism of fig. 1 and 4.

Fig. 6 is a schematic perspective view of the transmission mechanism in fig. 3 and 4.

Fig. 7 is a perspective view of the first sealing and cutting mechanism in fig. 1.

Fig. 8 is a schematic perspective view of the film-arranging mechanism in fig. 1.

Fig. 9 is a schematic perspective view of the end film-arranging device in fig. 8.

Fig. 10 is a schematic plan view of the side wall film-arranging device in fig. 8.

Fig. 11 is a perspective view of the wiping and sealing mechanism of fig. 10.

Fig. 12 is a schematic view of the structure viewed from the bottom perspective of fig. 11.

Fig. 13 is a perspective view of the transfer device in fig. 8.

Fig. 14 is a perspective view of the film feeding mechanism in fig. 1.

Fig. 15 is a schematic view of the mounting structure of the bracket and the second driving roller in fig. 14.

Fig. 16 is a schematic cross-sectional view of the first drive roller of fig. 14.

Detailed Description

In order to explain technical contents, structural features, implementation principles, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in combination with the embodiments.

As shown in fig. 1, the present invention discloses a film wrapping, sealing and cutting device based on a tube film, which is used for sealing a material to be wrapped into a tube-shaped wrapping film to form a wrapping body 1. For convenience of description, the objects to be packed in the following embodiments are all described by taking a square box as an example, and it should be noted that, as shown in fig. 14, the cylindrical packaging film is wound on a tray 31 in a long strip shape, the packaging film is composed of two films, namely an upper film and a lower film, the left side and the right side of the upper film and the lower film and one end of the upper film and one end of the lower film are sealed and closed, the other end of the upper film and the lower film is provided with an opening, and the square box can enter from the opening of the packaging film.

Referring to fig. 1 and 2, the film packaging, sealing and cutting device based on a cylindrical film of the present invention includes a working table 2, the working table 2 is used for bearing a packaging body 1, two opposite sides of the working table 2 are respectively provided with a film feeding mechanism 3 and a film opening mechanism 4, and the other two opposite sides of the working table 2 are respectively provided with an opening mechanism 5 and a first sealing and cutting mechanism 6. The film feeding mechanism 3 is used for outputting packaging films at intervals in a segmented manner, and each segment of packaging film is used for packaging one square box. The film stretching mechanism 4 is used for horizontally stretching a section of packaging film output by the film feeding mechanism 3 above the workbench 2 in a tensioning state. As shown in fig. 2, the mouth opening mechanism 5 includes a transfer mechanism 50, an upper tongue piece 51 and a lower tongue piece 52 which can be close to or far away from each other along the vertical direction are installed on the transfer mechanism 50, and the transfer mechanism 50 can drive the upper tongue piece 51 and the lower tongue piece 52 to be inserted into the packaging film and open the packaging film for the objects to be packaged to enter. The first sealing and cutting mechanism 6 cuts the opening of the package 1 flat and welds the cut. For convenience of description, in the following embodiments, the opening mechanism 5 is configured such that the two sides where the upper film mechanism 3 and the film opening mechanism 4 are located are in the left-right direction, the two sides where the opening mechanism 5 and the first sealing and cutting mechanism 6 are located are in the front-rear direction, and the opening of the packaging film faces rearward.

The working process of the film packaging, sealing and cutting device based on the cylinder film comprises the following steps: the upper film mechanism 3 outputs the packaging films on the material tray 31 at intervals in a segmented mode, when the length of the output packaging films meets the requirement, film discharging is suspended, the packaging films are straightened and opened above the workbench 2 by the film stretching mechanism 4 located opposite to the upper film mechanism 3, the opening mechanism 5 is started, the transfer mechanism 50 drives the upper tongue piece 51 and the lower tongue piece 52 which are close to each other to be inserted into the packaging films, then the upper tongue piece 51 and the lower tongue piece 52 are separated up and down, the packaging films are opened, at the moment, the upper tongue piece 51 is supported on the upper films at the opening of the packaging films, the lower tongue piece 52 is supported on the lower films at the opening of the packaging films, then the square box is pushed into the packaging films, the upper tongue piece 51 and the lower tongue piece 52 are reset to withdraw from the packaging films, then the first sealing and cutting mechanism 6 cuts off the redundant packaging films at the opening of the packaging bodies to enable the sealing lines to be close to the box bodies, and the opening is welded while the films are cut. Therefore, the film packaging, sealing and cutting device based on the tubular film realizes automatic film feeding, automatic film stretching, automatic opening and automatic sealing and cutting of the packaging film, so that the degree of mechanization of the tubular film packaging is effectively improved, and the working efficiency can be greatly improved.

As shown in fig. 3 to 5, in order to facilitate the insertion of the upper tongue piece 51 and the lower tongue piece 52 into the packaging film, the film packaging and sealing device based on the tubular film further includes an opening mechanism 8 disposed at the front end of the mouth opening mechanism 5, the opening mechanism 8 includes a pair of upper and lower suction film assemblies 80 and 81 disposed oppositely, and the upper and lower films at the opening of the packaging film on the mouth opening mechanism 4 are separated up and down by the upper and lower suction film assemblies 80 and 81, respectively. When the film stretching mechanism 4 stretches the packaging film output by the upper film mechanism 3 above the workbench 2, firstly, the opening mechanism 8 is started, the upper film and the lower film at the opening of the packaging body 1 are respectively pulled up and pulled down through the upper sucking film assembly 80 and the lower sucking film assembly 81, so that the packaging body 1 is stretched to form an opening through which the upper tongue piece 51 and the lower tongue piece 52 can pass, and then the conveying mechanism 50 conveys the upper tongue piece 51 and the lower tongue piece 52 into the packaging bag through the opening.

As shown in fig. 3 and 4, the film stretching mechanism 4 includes a film stretching rod 40 inserted into the packaging film output by the film feeding mechanism 3, and two clamping members 41 disposed opposite to the output port of the film feeding mechanism 3, wherein both the film stretching rod 40 and the two clamping members 41 can be horizontally away from or close to the film feeding mechanism 3, and when the packaging film is pulled out to a certain length by the film stretching rod 40, the two clamping members 41 respectively clamp both ends of one side of the packaging film. The packaging film is horizontally opened above the workbench 2 by pulling two sides of the packaging film through the two clamping parts 41 and the film feeding mechanism 3. In this embodiment, a first slide rail 42 extending left and right is transversely erected above the workbench 2, the film pulling rod 40 is connected with the first slide rail 42 through a connecting rod 43 in a sliding fit manner, the film pulling rod 40 is driven to slide along the first slide rail 42 through a first driving mechanism 44, so that the film pulling rod 40 extends out and returns, and when the film pulling rod 40 extends out, a packaging film is pulled to one side of the two clamping parts 41. A second slide rail 46 parallel to the first slide rail 42 and a transmission mechanism 47 connected with the second slide rail 46 in a sliding fit manner are further erected above the workbench 2, a second driving mechanism 45 is mounted on the second slide rail 46, the two clamping pieces 41 are mounted on the transmission mechanism 47, and the transmission mechanism 47 can drive the two clamping pieces 41 to respectively move forwards and backwards in opposite directions. When the film pulling rod 40 pulls out the packaging film, the second driving mechanism 45 drives the two clamping pieces 41 and the transmission mechanism 47 to approach the film pulling rod 40 along the second slide rail 46, when the two clamping pieces 41 approach the film pulling rod 40, the two clamping pieces 41 clamp the front and rear ends of the packaging film on the film pulling rod 40, and then the transmission mechanism 47 is started to drive the two clamping pieces 41 to respectively move forwards and backwards so as to tension the packaging film. In this embodiment, the driving mechanism of the two clamping members 41 is a finger air clamping cylinder. As shown in fig. 6, the transmission mechanism 47 includes a case 470 connected with the second slide rail 46 in a sliding fit manner, the case 470 extends transversely back and forth above the workbench 2, a driving belt 471 is installed on a side of the case 470 near the film pulling rod 40, a third driving mechanism 472 connected with the driving belt 471 is further installed on the case 470, the two clamping members 41 are connected with the driving belt 471, the driving belt 471 rotates and drives the two clamping members 41 to synchronously move toward or relative to each other, that is, one of the two clamping members 41 is connected with the upper width belt of the driving belt 471, and the other of the two clamping members 41 is connected with the lower width belt of the driving belt 471. In addition, since the belt 471 is a flexible member and is not suitable for excessive load bearing, a third slide rail 473 is disposed on the case 470 below the belt 471, parallel to the belt 471, and the driving mechanism of the two clamping members 41 is connected with the third slide rail 473 in a sliding fit manner, so that when the belt 471 rotates, the two clamping members 41 slide along the third slide rail 473.

Referring to fig. 3 and 5 again, the sucking-up membrane module 80 is installed above the rear edge of the worktable 2, and includes two sucking discs 800 and an upper driver 801 connected to the two sucking discs 800, and the upper driver 801 can drive the two sucking discs 800 to move up and down in a telescopic manner; the lower sucking film assembly 81 includes two lower sucking discs 810 and a lower driver 811 connected to the two lower sucking discs 810, and the lower driver 811 drives the two lower sucking discs 810 to move up and down in a telescopic manner. The two lower suckers 810 are disposed opposite to the two upper suckers 800, when the packaging film is pulled out by the film pulling rod 40, the upper suckers 800 are located above the opening of the packaging film, and the lower suckers 810 are located below the opening of the packaging film. When the film pulling rod 40 is going to discharge the film, the upper suction cup 800 and the lower suction cup 810 are in a reset state to avoid colliding with the film pulling rod 40, when the film pulling rod 40 is in place, the upper suction cup 800 and the lower suction cup 810 respectively extend out to respectively suck the upper film and the lower film at the opening of the packaging film, and then the upper suction cup 800 and the lower suction cup 810 respectively pull the upper film and the lower film to retract, so that the upper film and the lower film of the packaging film are separated to allow the upper tongue piece 51 and the lower tongue piece 52 to enter.

As shown in fig. 4, a second sealing and cutting mechanism 7 is further provided at the output port of the upper film mechanism 3 for cutting off a section of the packaging film output from the upper film mechanism 3 and welding the cut. After the clamping piece 41 receives the packaging film on the film pulling rod 40, the film pulling rod 40 returns to the output port of the upper film mechanism 3, then the upper film and the lower film of the packaging film are respectively fixed on the upper tongue piece 51 and the lower tongue piece 52 through the opening mechanism 8 and the mouth opening mechanism 5, at the moment, the second sealing and cutting mechanism 7 is started to cut off a section of the packaging film output by the upper film mechanism 3 and carry out hot melting and sealing, so that the packaging film output by the upper film mechanism 3 is separated from the film tape on the material tray 31. The second sealing and cutting mechanism 7 cuts the packaging film at the front end of the film pulling rod 40, and the film pulling rod 40 is sealed in the packaging film at the output port of the upper film mechanism 3 during hot melting and sealing so as to prepare for the next film pulling action of the film pulling rod 40. It should be noted that, both the first sealing and cutting mechanism and the second sealing and cutting mechanism use a pair of ironing plates that can be close to or far from each other to melt the packaging film at the cut according to the principle of hot melting of the packaging film, so as to achieve the purpose of cutting and sealing the packaging film, as shown in fig. 7, the first sealing and cutting mechanism 6 includes a pair of first ironing plates 60 that are arranged up and down, and the second sealing and cutting mechanism 7 packages a pair of second ironing plates 70 that are arranged up and down.

As shown in fig. 2, the upper tongue piece 51 and the lower tongue piece 52 are mounted on a mounting frame 54, the transfer mechanism 50 can drive the mounting frame 54 to move up and down, left and right, and back and forth relative to the worktable 2, the mounting frame 54 encloses a supporting column 540, a fixed arm 541 and a movable arm 542 are mounted on the supporting column 540, the upper tongue piece 51 is mounted on the movable arm 542, and the lower tongue piece 52 is mounted on the fixed arm 541. The transfer mechanism 50 may be a smart robot arm, or other mechanical mechanisms, and in this embodiment, the transfer mechanism 50 includes an X-direction sliding mechanism, a Y-direction sliding mechanism, and a Z-direction sliding mechanism. The X-direction sliding mechanism includes a fourth slide rail 500 disposed above the worktable 2 along the left-right direction and a fourth driving mechanism 501 disposed on the fourth slide rail 500, the Z-direction sliding mechanism includes a fifth slide rail 510 and a fifth driving mechanism 511, the fifth slide rail 510 is connected with the fourth slide rail 500 in a sliding fit manner, and the fourth driving mechanism 501 drives the fifth slide rail 510 and the fifth driving mechanism 511 to slide left and right along the fourth slide rail 500. The Y-direction sliding mechanism comprises a sixth sliding rail 520 and a sixth driving mechanism 521, the sixth sliding rail 520 is connected with the fifth sliding rail 510 in a sliding fit manner, the fifth driving mechanism 511 drives the sixth sliding rail 520 and the sixth driving mechanism 521 to slide up and down along the fifth sliding rail 510, the mounting frame 54 is connected with the sixth sliding rail 520 in a sliding fit manner, and the sixth driving mechanism 521 drives the mounting frame 54 to slide back and forth along the sixth sliding rail 520. In order to realize the opening and closing between the upper tongue piece 51 and the lower tongue piece 52, the mounting bracket 54 is further provided with a lifting mechanism driven by the screw rod 57, the movable arm 542 is connected with a sliding nut on the screw rod 530, the movable arm 542 is driven to move up and down by the rotation of the screw rod 57, so that the upper tongue piece 51 is far away from or close to the lower tongue piece 52, namely the opening and closing between the upper tongue piece 51 and the lower tongue piece 52 are realized

As shown in fig. 2, in order to fix the upper film at the opening of the packaging film on the upper tongue piece 51 and fix the lower film on the lower tongue piece 52, the movable arm 542 is provided with an upper pressing rod 55 capable of performing telescopic motion relative to the upper tongue piece 51 above the upper tongue piece 51, the fixed arm 541 is provided with a lower pressing rod 56 capable of performing telescopic motion relative to the lower tongue piece 52 below the lower tongue piece 52, both the upper pressing rod 55 and the lower pressing rod 56 are driven by air cylinders, the upper pressing rod 55 is used for pressing the upper film at the opening of the packaging film on the upper tongue piece 51, and the lower pressing rod 56 is used for pressing the lower film at the opening of the packaging film on the lower tongue piece 52. When the transfer mechanism 50 extends the upper tongue piece 51 and the lower tongue piece 52 which are combined together into the packaging film, the screw 57 is started to drive the movable arm 542 to ascend, so that the upper tongue piece 51 and the lower tongue piece 52 are separated up and down, at the moment, the upper pressure rod 55 presses the upper film at the opening of the packaging film on the upper tongue piece 51, the lower pressure rod 56 presses the lower film at the opening of the packaging film on the lower tongue piece 52, so that the packaging film is fixed by the opening mechanism 5, then the square box is pushed into the packaging film from the space K between the upper tongue piece 51 and the lower tongue piece 52, the square box is pushed into the packaging film to form a packaging body 1, and the packaging body 1 is supported by the workbench 2. In addition, when the packaging film is fixed on the upper tongue piece 51 and the lower tongue piece 52, in order to achieve the effect of completely opening the packaging film to facilitate the entering of the square box, a further improvement is that the upper tongue piece 51 and/or the lower tongue piece 52 are provided with air blowing holes 53, and the air blowing holes 53 are used for blowing air into the packaging film to completely open the packaging film.

As shown in fig. 1 and 3, a loading table 100 for pre-placing the cube is further provided at the rear end of the opening mechanism 5, and the cube is pushed into the packaging film from the loading table 100. The rear end of the feeding table 100 can also be provided with a first conveyor belt 101 which is butted with the feeding table, and the square boxes to be packaged are firstly placed on the first conveyor belt 101 and then are conveyed to the feeding table 100 by the first conveyor belt 101. Since it is difficult to unify the height of the conveyor belt 101 and the height of the opening of the packaging film, a lifter (not shown) is further installed below the feeding table 100, and the height of the feeding table 100 is adjusted by the lifter, so that the heights of the feeding table 100 when receiving and transferring the square boxes are respectively matched with the heights of the conveyor belt 101 and the opening of the packaging film.

As shown in fig. 1 and 3, the film packaging, sealing and cutting device of the present invention further comprises a pushing mechanism, the pushing mechanism comprises a push rod 103 and a slide way 104, the slide way 104 extends from the rear end of the worktable 2 to the first sealing and cutting mechanism 6, the push rod 103 is connected with the slide way 104 in a sliding fit manner, a push rod driver 105 for driving the push rod 103 to slide is installed on the slide way 104, and the push rod 103 is used for pushing the packaging body 1 to the first sealing and cutting mechanism 6. In this embodiment, a slide 104 is installed on the side of the table 2 near the mouth-opening mechanism 5, and extends from the feeding table 100 to the first sealing and cutting mechanism 6, when the packaging film is completely opened by the air flow blown from the air blowing holes 53 on the upper tongue piece 51 and/or the lower tongue piece 52, the push rod 103 moves along the slide 104 toward the box, when the push rod 103 is inserted into the packaging film and contacts with the box, the upper pressure rod 55 and the lower pressure rod 56 on the packaging film are reset, and the transfer mechanism 50 is reset, and then moves forward with the push rod 103, so that the packaging body 1 moves forward along the table 2 until the opening of the packaging body 1 is pushed below the first sealing and cutting mechanism 6, the push rod 103 is reset, and then the first sealing and cutting mechanism 6 is started to cut off the packaging film at the opening of the packaging body 1, and the cut is welded.

The detailed working process of the film packaging, sealing and cutting device based on the cylinder film with the structure comprises the following steps: firstly, a square box to be packaged is placed on a first conveyor belt 101, the square box is conveyed to a feeding table 100 by the first conveyor belt 101, and the feeding table 100 waits for an opening of a packaging film; then, the film feeding mechanism 3 and the film stretching mechanism 4 are started, the film pulling rod 40 pulls the packaging film output by the film feeding mechanism 3 to a preset position, the film feeding mechanism 3 stops discharging the film, then the two clamping pieces 41 are in place, one side of the packaging film is clamped on the film pulling rod 40, then the transmission mechanism 47 drives the two clamping pieces 41 to move oppositely, and the packaging film is tensioned above the workbench 2; then, the opening mechanism 8 is started, the upper suction cup 800 moves downwards, the lower suction cup 810 moves upwards, so that the upper film and the lower film at the opening of the packaging film are sucked, then the upper suction cup 800 moves upwards, the lower suction cup 810 moves downwards, so that an opening is opened in the packaging film, and then the upper suction cup 800 and the lower suction cup 810 release the adsorption on the packaging film; then, the mouth opening mechanism 5 is started, the upper tongue piece 51 and the lower tongue piece 52 which are together driven by the transfer mechanism 50 are inserted into the packaging film from the opening of the packaging film, then the upper pressure rod 55 is pressed downwards to press the upper film at the opening of the packaging film on the upper tongue piece 51, the lower pressure rod 56 is pressed upwards to press the lower film at the opening of the packaging film on the lower tongue piece 52, then the second sealing and cutting mechanism 7 is started to separate the output section of the packaging film from the main body film strip and weld the cut; then the transfer mechanism 50 drives the packaging film to a film inlet position butted with the feeding table 100, at the position, the screw rod 57 drives the upper tongue piece 51 to move upwards, so that the packaging film is opened to be fed into a square box, then air flow is blown out from the air blowing holes 53 on the upper tongue piece 51 and/or the lower tongue piece 52 to completely open the packaging film, and then the feeding table 100 is lifted to a height matched with the opening of the packaging film; and then the pushing mechanism is started, the push rod 103 pushes the square box into the packaging film from the feeding table 100, the upper pressure rod 55 and the lower pressure rod 56 are reset, the push rod 103 continues to push until the opening part of the packaging film on the packaging body 1 is positioned below the first sealing and cutting mechanism 6, then the push rod 103 is reset, the first sealing and cutting mechanism 6 is started, redundant packaging film at the upper opening part of the packaging body 1 is cut off and the cut is welded, and then the sealed packaging body 1 is sent to the film processing mechanism 9 for processing.

As shown in fig. 8, the film processing mechanism 9 includes an end wall film processing device 90 and a side wall film processing device 91, wherein the end wall film processing device 90 is abutted against the first sealing and cutting mechanism 6, the side wall film processing device 91 is abutted against the end wall film processing device 90, the packaging film on the end wall 11 of the package 1 is smoothed by the end wall film processing device 90, the packaging film on the side wall 10 of the package 1 is smoothed by the side wall 10 smoothing device, and then the package 1 processed by the film processing mechanism 9 is sent into a heat shrinking furnace to be heat-shrunk.

As shown in fig. 9, the end film tidying device 90 includes a support stand 900 abutting against the first sealing and cutting mechanism 6, the support stand 900 is used for supporting the package 1, and when the opening of the rear end of the package 1 is located below the first sealing and cutting mechanism 6, the front end of the package 1 is located on the support stand 900. The front end of the supporting table 900 is provided with a first smoothing rod 901 and a seventh driving mechanism 902 connected with the first smoothing rod 901, and the seventh driving mechanism 902 can drive the first smoothing rod 901 to transversely extend and retract along the end wall 11 of the front end of the package 1. The seventh driving mechanism 902 drives the first smoothing rod 901 to slide along the end wall 11 of the package 1, so as to smooth out the package film on the end wall 11 of the package 1, and pull the excess package film on the smoothing position to the corner of the package 1. The support table 900 is further provided with a positioning frame 903 for positioning the package 1 therein, and the first smoothing bar 901 is provided at the tip of the positioning frame 903, and the package 1 is fixed to the support table 900 by the positioning frame 903. In order to increase the processing speed, two first smoothing bars 901 are provided, and the two first smoothing bars 901 are arranged on both sides of the positioning frame 903 in an opposed manner.

The package 1 processed by the end wall film finishing device 90 is transferred to the side wall film finishing device 91, and the package film on the side wall 10 of the package 1 is smoothed by the side wall film finishing device 91. As shown in fig. 10 to 12, the side wall film tidying device 91 includes a support member 910, the support member 910 is used for supporting the package 1, at least one side (left side or right side) of the support member 910 is provided with at least one group of smoothing, sealing and cutting mechanism 911, the smoothing, sealing and cutting mechanism 911 includes a second smoothing rod 9110, an eighth driving mechanism, a sealing and cutting piece 9114 and a ninth driving mechanism 9115, and the eighth driving mechanism is connected with the second smoothing rod 9110 and is used for driving the second smoothing rod 9110 to slide along the side wall 10 of the package 1 so as to smooth the package film on the side wall 10 of the package 1. The ninth driving mechanism 9115 is connected with the sealing and cutting piece 9114, and is used for driving the sealing and cutting piece 9114 to move close to or away from the package 1 in a direction perpendicular to the side wall 10 of the package 1, when the sealing and cutting piece 9114 is close to the package 1, the second wiping rod 9110 and the redundant package film cleaned by the first wiping rod 901 are cut off together by using the hot melting principle, and the cut-off is welded at the same time.

As shown in fig. 10 and 11, the wiping, sealing and cutting mechanism 911 further includes a first mounting plate 9116 horizontally disposed and a second mounting plate 9117 vertically mounted at one end of the first mounting plate 9116, one side of the second mounting plate 9117 is provided with a supporting block 9100 protruding outwards and used for supporting the package 1, an eighth driving mechanism and a ninth driving mechanism 9115 are mounted on the first mounting plate 9116, when the eighth driving mechanism drives the second wiping rod 9110 to slide to the second mounting plate 9117 along the sidewall 10 of the package 1, the excess package film to be wiped out is clamped between the second wiping rod 9110 and the second mounting plate 9117, and then the ninth driving mechanism 9115 drives the sealing and cutting piece 9114 to move towards the package 1, so as to cut the excess package film to be wiped out.

As shown in fig. 10 and 12, the sidewall film-arranging device 91 includes four groups of wiping and sealing mechanisms 911, the four groups of wiping and sealing mechanisms 911 are arranged in a pairwise opposite manner, supporting blocks 9100 on the four groups of wiping and sealing mechanisms 911 extend oppositely to form supporting pieces 910, when the device is in operation, the four supporting blocks 9100 respectively support four corners of the package 1, two groups of wiping and sealing mechanisms 911 are respectively arranged at two sidewalls 10 of the package 1, two second wiping rods 9110 on the two groups of wiping and sealing mechanisms 911 at one sidewall 10 of the package 1 respectively wipe the front half and the rear half of the sidewall 10, the wiped redundant package films are respectively pulled to the front corner and the rear corner of the package 1, and then the package films at the front corner and the rear corner of the package 1 are cut and welded through two sealing pieces 9114 on the two groups of wiping and sealing mechanisms 911. In addition, in order to ensure the stability of the package 1 on the support member 910, the four groups of wiping and sealing mechanisms 911 work synchronously, and the second wiping rods 9110 on both sides of the package 1 form a clamping effect on the package 1.

As shown in fig. 12, the eighth driving mechanism includes an X-direction driver 9111 and a Y-direction driver 9112, the X-direction driver 9111 drives the second wiping rod 9110 to be close to or far away from the package 1, and the Y-direction driver 9112 drives the second wiping rod 9110 to slide along the sidewall 10 of the package 1. In this embodiment, the X-direction driver 9111 is a telescopic cylinder a, a piston rod of the telescopic cylinder a is connected to the second wiping rod 9110, the Y-direction driver 9112 is a telescopic cylinder B, a piston rod of the telescopic cylinder B is connected to a cylinder body of the telescopic cylinder a, and the telescopic motion of the piston rod of the telescopic cylinder B drives the cylinder body of the telescopic cylinder a to move back and forth along the seventh slide rail 9113. In addition, ninth actuating mechanism 9115 includes a telescopic cylinder C, and this telescopic cylinder C's piston rod is connected with seal cutting piece 9114 through the connecting rod 9123 of an L type, and connecting rod 9123 and the eighth slide rail 9122 sliding connection who installs on first mounting panel 9116 drive connecting rod 9123 through telescopic cylinder C and slide along eighth slide rail 9122, and then make seal cutting piece 9114 keep away from or be close to packing body 1.

In order to fix the packaging film which is smeared to the corners when the sealing and cutting piece 9114 is used for cutting the film, a film clamping mechanism is further arranged on the second mounting plate 9117, as shown in fig. 11, the film clamping mechanism comprises a clamping plate 9118 which is transversely arranged on the second mounting plate 9117 and can slide back and forth along the second mounting plate 9117, the clamping plate 9118 can be far away from or close to one side of the second mounting plate 9117 with a supporting block 9100, and when the second smearing rod 9110 slides to the clamping plate 9118, the redundant packaging film at the corners of the packaging body 1 is clamped between the second smearing rod 9110 and the clamping plate 9118. In this embodiment, a ninth slide rail 9119 extending back and forth is transversely arranged on the back side surface of the second mounting plate 9117, the clamping plate 9118 is connected with the ninth slide rail 9119 in a sliding fit manner, when the package 1 is placed on the support member 910, the plane where the clamping plate 9118 is located on the second mounting plate 9117 and the side wall 10 of the package 1 are located on the same plane, when the second wiping rod 9110 slides to the corner position of the package 1, the clamping plate 9118 is pushed to move away from the corner of the package 1 along with the continuous sliding of the second wiping rod 9110, and then the second wiping rod 9110 enters the back side surface of the second mounting plate 9117, and meanwhile, the scraped redundant packaging film is pulled between the second wiping rod 9110 and the clamping plate 9118, and is fixed by the clamping force between the second wiping rod 9110 and the clamping plate 9118, so as to facilitate the work of the sealing member 9114. Preferably, the second mounting plate 9117 is further provided with a baffle 9121 at an end opposite to the supporting block 9100, the film clamping mechanism further comprises a first elastic piece 9120, one end of the first elastic piece 9120 abuts against the baffle 9121, and the other end of the first elastic piece 9120 abuts against the clamping plate 9118. The first elastic member 9120 further increases the holding force between the splint 9118 and the second smoothing rod 9110, and the splint 9118 is automatically returned.

As shown in fig. 13, a transfer device 92 can be used to transfer the package body 1 from the end wall film tidying device 90 to the side wall film tidying device 91, specifically, the transfer device 92 includes a clamping mechanism, a lifting mechanism and a tenth sliding rail 923, the tenth sliding rail 923 extends from the top of the end wall film tidying device 90 to the top of the side wall film tidying device 91, and the clamping mechanism is connected with the tenth sliding rail 923 by sliding fit through the lifting mechanism. Specifically, press from both sides and get mechanism and include at least a pair of anchor clamps 920, a pair of anchor clamps 920 control it to open and shut through a die clamping cylinder 921, and elevating system includes a lift cylinder 922, and die clamping cylinder 921 is connected with the piston rod on the lift cylinder 922 through connecting plate 924, and the cylinder body and the tenth slide rail 923 sliding fit of lift cylinder 922 are connected. After the end wall film tidying device 90 finishes working, the clamp 920 moves to the top of the packaging body 1 along the tenth sliding rail 923, the lifting cylinder 922 falls the clamp 920, the clamping cylinder 921 drives the pair of clamps 920 to clamp the packaging body 1, then the lifting cylinder 922 lifts the clamp 920 to move to the top of the support member 910 of the side wall film tidying device 91 along the tenth sliding rail 923, and the packaging body 1 is put down. In this embodiment, two pairs of front and rear clamps 920 are provided, the two pairs of clamps 920 are respectively installed at the front and rear ends of the connecting plate 924, when the conveying device is started, the front pair of clamps 920 conveys the package 1 on the side wall film tidying device 91 out of the packaging line onto the second conveyor 106 (as shown in fig. 1), the package 1 is conveyed to the heat shrinking furnace by the second conveyor 106, and the rear pair of clamps 920 conveys the package 1 from the side wall film tidying device 90 to the side wall film tidying device 91, thereby improving the working efficiency. In this embodiment, the operation principle of the clamping cylinder 921 belongs to the common knowledge of those skilled in the art, and is not described herein.

Therefore, the packaging films on the end walls 11 of the packaging body 1 are smoothed by the end wall smoothing device 90, the packaging films on the side walls 10 on two sides of the packaging body 1 are smoothed by the side wall film smoothing device 91, redundant packaging films at the smoothed positions are pulled to the corner positions of the packaging body 1, the packaging films are cut by the sealing and cutting piece 9114 on the side wall smoothing device 91, the cut is welded at the same time, the packaging films on the packaging body 1 can be smoothed and leveled, the packaging films and square boxes in the packaging films are tightly attached together as much as possible, and the heat shrinkage effect of the packaging body 1 in a heat shrinkage furnace is effectively improved.

For the film feeding mechanism 3 of the film packaging, sealing and cutting device based on the tubular film of the present invention, a film feeding device known to those skilled in the art may be used as long as the film feeding operation is completed. In this embodiment, a set of improved film feeding mechanisms 3 is provided, and the structure and the working principle are as follows:

as shown in fig. 14, the film feeding mechanism 3 in the present embodiment includes a frame 30, a first film winding roller 32 around which the packaging film is wound, a gravity roller 33, and an output mechanism. The packaging film is wound on a tray 31, the tray 31 is installed below the rack 30, and the specific setting position of the tray 31 can be freely selected, but not limited thereto. Two eleventh slide rails 301 are arranged on two sides of the rack 30, the eleventh slide rails 301 extend vertically along the rack 30, the first film winding roller 32 is transversely installed on the rack 30 and is located at the upper end of the eleventh slide rails 301, the gravity roller 33 is transversely installed on the rack 30 and is freely matched with the eleventh slide rails 301 in a sliding manner, namely, when the gravity roller 33 is subjected to upward pulling force, the gravity roller can move upwards along the eleventh slide rails 301, and when the pulling force disappears or is smaller than the gravity of the gravity roller 33, the gravity roller 33 can slide downwards along the eleventh slide rails 301 under the action of self gravity until the bottommost end of the eleventh slide rails 301. The output mechanism is mounted at the upper end of the frame 30 and is used for sending out the packaging films in sections.

When the film is threaded, the free end of the packaging film is pulled out from the material tray 31, then bypasses the first film winding roller 32 from the point A above the first film winding roller 32, and bypasses the gravity roller 33 from the point B below the gravity roller 33, the free end of the packaging film is pulled out from the lower surface of the gravity roller 33 and upwards pulled to the output mechanism, and the packaging film is output through the output mechanism, and the film threading is completed. For convenience of description, the perforated packaging film is divided into a P1 section, a P2 section and a P3 section, the P1 section is a section between the packaging film from the material tray 31 to the first film winding roller 32, the P2 section is a section between the packaging film from the first film winding roller 32 to the gravity roller 33, and the P3 section is a section between the packaging film from the gravity roller 33 to the output mechanism. After the output mechanism is started, the packaging film is sent out from the inlet C of the output mechanism, when the packaging film is sent out to a specified length, the output mechanism is paused, the second sealing and cutting mechanism 7 at the rear end cuts off the sent packaging film, then the film feeding mechanism 3 is started again after the subsequent packaging work is finished, and the packaging film is output outwards again. In the above working process, when the tray 31 of the packaging film is relatively heavy, the film discharging speed V1 of the P2 section cannot keep up with the film discharging speed V2 of the P3 section, that is, V2> V1, at this time, the gravity roller 33 is pulled up under the combined action of the P2 section and the P3 section, the gravity roller 33 moves up along the eleventh slide rail 301, and with the upward movement of the gravity roller 33, the P2 section which is positioned between the first film winding roller 32 and the gravity roller 33 and is pulled out from the tray 31 is released to the P3 section, so as to supplement the shortage of the feeding speed of the tray, thereby ensuring the film feeding speed under the normal pulling force of the output mechanism. After the output mechanism sends out the packaging film with the specified length, feeding is suspended, at this time, the gravity roller 33 slides downwards along the eleventh slide rail 301 under the action of self gravity, the gravity roller 33 drives the packaging film to be output from the tray 31 while sliding downwards, the P1 section is continuously released to the P2 section until the gravity roller 33 slides to the bottommost end of the eleventh slide rail 301 again, and the P2 section returns to the original length, so that the process of sliding downwards the gravity roller 33 completes pre-film-feeding work of the packaging film from the first film winding roller 32 to the gravity roller 33, and preparation is made for restarting of the output mechanism. In addition, the gravity roller 33 provides certain expansion force for the rear end of the packaging film in the output process of the packaging film from the output mechanism, so that the uniform stress at the two ends of the packaging film is ensured, and the packaging film can be completely opened above the workbench 2.

The frame 30 includes two opposite side plates 300, two ends of the first film winding roller 32 are respectively connected to the two side plates 300, and two eleventh slide rails 301 are respectively disposed on the two side plates 300. A buffer block 302 is further mounted at the lower end of the eleventh slide rail 301, and the buffer block 302 supports and buffers the first film winding roller 32 which slides down from above.

The output mechanism comprises a first driving roller 34 and a second driving roller 35 which are transversely arranged at the upper end of the frame 30, a gap 36 for the packaging film to pass through is arranged between the first driving roller 34 and the second driving roller 35, and the packaging film is output through the relative rotation of the first driving roller 34 and the second driving roller 35. In this embodiment, both ends of the first driving roller 34 and the second driving roller 35 are connected to the side plates 300 on both sides of the frame 30, respectively. In addition, a driving motor 39 in transmission connection with the first driving roller 34 is further installed on the frame 30, and the driving motor 39 drives the first driving roller 34 to rotate, so that the packaging film is output from the gap 36.

In order to make the gap 36 between the first driving roller 34 and the second driving roller 35 adaptable to the packaging films with different thicknesses, the frame 30 is further provided with a gap adjusting mechanism for adjusting the size of the gap 36 according to the thickness of the packaging film. As shown in fig. 14, the gap 36 adjusting mechanism includes a twelfth slide rail 37 disposed on the frame 30 and extending vertically along the frame 30, and the second driving roller 35 is slidably connected to the twelfth slide rail 37. When the thickness of the packaging film is larger, the second driving roller 35 is lifted upwards to penetrate the free end of the packaging film into the gap 36, and then the second driving roller 35 falls down along the twelfth slide rail 37 under the action of self gravity to clamp the packaging film. In order to further improve the elastic clamping force of the first driving roller 34 and the second driving roller 35 on the packaging film, preferably, as shown in fig. 15, the second driving roller 35 is mounted on a bracket 38, the bracket 38 includes a top plate 380 and mounting lugs 381 extending downward from both ends of the top plate 380, both ends of the second driving roller 35 are respectively connected with the mounting lugs 381, and the mounting lugs 381 are respectively connected with the twelfth slide rails 37 in a sliding manner. A supporting plate 303 is further transversely disposed above the top plate 380, two ends of the supporting plate 303 are respectively fixed on the rack 30, at least one through hole 304 is disposed on the supporting plate 303, in this embodiment, two through holes 304 are disposed at a transverse interval, a guide pillar 305 passing through the through hole 304 upwards is connected to the top plate 380, a second elastic member 306 is sleeved on the guide pillar 305 between the top plate 380 and the supporting plate 303, one end of the second elastic member 306 abuts against the supporting plate 303, the other end of the second elastic member 306 abuts against the top plate 380, and a downward pushing force is generated on the top plate 380 through the second elastic member 306, so that a clamping force between the first driving roller 34 and the second driving roller 35 is increased, and meanwhile, through the cooperation between the guide pillar 305 and the through hole 304, the first driving roller 34 can also move upwards against the elastic force of the second elastic member 306.

As shown in fig. 14 and 15, the second driving roller 35 includes a fixed shaft 350 transversely disposed on the frame 30 and a plurality of rollers 351 spaced apart from and sleeved on the fixed shaft 350 and capable of rotating relative to the fixed shaft 350, the gap 36 is formed by a gap between the rollers 351 and the first driving roller 34, a plurality of outwardly protruding needling portions 352 are disposed on a rolling surface of the rollers 351, and the needling portions 352 are used for needling air holes on the packaging film passing through the gap 36. When the second driving roller 35 is connected to the frame 30 through the bracket 38, the fixed shaft 350 is connected to the two mounting lugs 381 on the bracket 38, and the rollers 351 roll during the feeding process of the packaging film, so that air holes are punched on the packaging film. In addition, as shown in fig. 16, the first driving roller 34 is further sleeved with a flexible gasket 340, and in the rolling process of the roller 351, the needling portion 352 pierces the flexible gasket 340 from the upper side of the packaging film, so that the quality of the air holes is guaranteed, and the needling portion 352 is prevented from being damaged by the first roller 351.

The above disclosure is only a preferred embodiment of the present invention, and certainly should not be taken as limiting the scope of the present invention, which is therefore intended to cover all equivalent changes and modifications within the scope of the present invention.

Claims (9)

1. The film packaging, sealing and cutting device based on the cylindrical film is characterized by comprising a workbench, wherein the workbench is used for bearing a packaging body, two opposite sides of the workbench are respectively provided with a film feeding mechanism and a film opening mechanism, and the other two opposite sides of the workbench are respectively provided with an opening mechanism and a first sealing and cutting mechanism;

the film feeding mechanism is used for outputting cylindrical packaging films at intervals in a segmented manner;

the film stretching mechanism is used for horizontally stretching a section of the packaging film output by the film feeding mechanism above the workbench in a tensioning state; the film stretching mechanism comprises a film stretching rod which is arranged in the packaging film output by the film feeding mechanism in a penetrating mode, and two clamping pieces which are arranged opposite to the output port of the film feeding mechanism, the film stretching rod and the two clamping pieces can be horizontally far away from or close to the film feeding mechanism, and when the packaging film is pulled to a certain length by the film stretching rod, the two clamping pieces clamp two ends of one side of the packaging film respectively; the two sides of the packaging film are pulled by the two clamping pieces and the film feeding mechanism, so that the packaging film is horizontally opened above the workbench;

the mouth opening mechanism comprises a transfer mechanism, an upper tongue piece and a lower tongue piece which can be mutually close to or far away from each other along the vertical direction are arranged on the transfer mechanism, the transfer mechanism can drive the upper tongue piece and the lower tongue piece to be inserted into the packaging film, and the packaging film is opened to be fed with a to-be-packaged object;

the first sealing and cutting mechanism is used for flattening the opening of the packaging body and welding the cut.

2. The film packaging, sealing and cutting device based on the cylindrical film as claimed in claim 1, further comprising an opening mechanism arranged at the front end of the opening mechanism, wherein the opening mechanism comprises a pair of upper and lower suction film components arranged oppositely, and the upper and lower films at the opening of the packaging film on the opening mechanism are separated up and down by the upper and lower suction film components respectively.

3. The web-based film package sealing and cutting apparatus of claim 1, further comprising a second sealing and cutting mechanism provided at an output port of the upper film mechanism, the second sealing and cutting mechanism being configured to cut a length of the packaging film output from the upper film mechanism and weld the cut.

4. The film packaging, sealing and cutting device based on the cartridge film as claimed in claim 1, wherein the upper tongue piece and the lower tongue piece are mounted on a mounting frame, the transfer mechanism can drive the mounting frame to move up and down, left and right, and back and forth relative to the workbench, the mounting frame is used for packaging a supporting column, a fixed arm and a movable arm are mounted on the supporting column, the upper tongue piece is mounted on the movable arm, the lower tongue piece is mounted on the fixed arm, and a driver capable of driving the movable arm to slide up and down relative to the fixed arm is further mounted on the mounting frame.

5. The film-packaging sealing and cutting device based on the cylinder film as claimed in claim 4, wherein the movable arm is provided with an upper pressing rod capable of performing telescopic motion relative to the upper tongue piece above the upper tongue piece, the fixed arm is provided with a lower pressing rod capable of performing telescopic motion relative to the lower tongue piece below the lower tongue piece, the upper pressing rod is used for pressing the upper film at the opening of the packaging film on the upper tongue piece, and the lower pressing rod is used for pressing the lower film at the opening of the packaging film on the lower tongue piece.

6. The web-based film package sealing and cutting device of claim 5, wherein a blowing hole is provided on the upper tab and/or the lower tab for blowing air into the packaging film to fully open the packaging film.

7. The film packaging, sealing and cutting device based on the cylinder film as claimed in claim 1, further comprising a pushing mechanism, wherein the pushing mechanism comprises a push rod and a slide way, the slide way transversely extends from the front end of the workbench to the first sealing and cutting mechanism, the push rod is connected with the slide way in a sliding fit manner, and the push rod is used for pushing the packaging body to the first sealing and cutting mechanism.

8. The web-based film package sealing and cutting device of claim 1, further comprising a film collating device interfacing with said first sealing and cutting mechanism for performing a wipe treatment of the side and/or end walls of said packages exiting said first sealing and cutting mechanism.

9. The web-based film package sealing and cutting apparatus of claim 1 wherein said film feeding mechanism comprises:

a frame;

the eleventh sliding rail is arranged on the rack and vertically extends along the rack;

the first film winding roller is used for the packaging film to wind, and the first film winding roller is transversely arranged on the rack and is positioned at the upper end of the eleventh sliding rail;

the gravity roller is used for being wound by the packaging film, is transversely arranged on the rack and is freely matched with the eleventh sliding rail in a sliding manner;

and the output mechanism is arranged at the upper end of the rack and is used for sending the packaging film out in sections.

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