CN219688913U

CN219688913U - PE thermal shrinkage film rolling device

Info

Publication number: CN219688913U
Application number: CN202321354056.8U
Authority: CN
Inventors: 刘世平; 滕忻超; 李泽进
Original assignee: Qingdao Taibo Polymer Label Co ltd
Current assignee: Qingdao Taibo Polymer Label Co ltd
Priority date: 2023-05-30
Filing date: 2023-05-30
Publication date: 2023-09-15
Anticipated expiration: 2033-05-30

Abstract

The utility model relates to a PE heat-shrinkable film rolling device which comprises a frame, a traction roller and a film rolling roller, wherein the film rolling roller and the traction roller are both arranged on the frame, the traction roller rotates to drive PE heat-shrinkable film to enter the film rolling device, the film rolling roller rotates to wind the PE heat-shrinkable film around the peripheral wall of the PE heat-shrinkable film rolling device, a flattening device for folding and unfolding the PE heat-shrinkable film generated in the film rolling process is arranged between the frame and the traction roller correspondingly, the flattening device comprises a flattening arm connected with the frame, the flattening arm is connected with the flattening roller, the flattening roller can be abutted against the surface of the PE heat-shrinkable film, and the flattening arm can drive the flattening roller to slide along the surface of the PE heat-shrinkable film to unfold the folds of the PE heat-shrinkable film. The PE heat-shrinkable film rolling machine has the effects of flattening the PE heat-shrinkable film in the PE heat-shrinkable film rolling process, reducing folds and folds of the PE heat-shrinkable film and improving the film rolling quality of the PE heat-shrinkable film.

Description

PE thermal shrinkage film rolling device

Technical Field

The utility model relates to the field of film material processing, in particular to a PE heat-shrinkable film rolling device.

Background

The PE heat-shrinkable film is an industrial film-loading product, has high tensile strength, high elongation, good self-adhesion, high transparency and other object points, and can be widely applied to centralized packaging of various cargoes. After the PE heat-shrinkable film is processed, the produced PE heat-shrinkable film is rolled into a PE heat-shrinkable film roller through film rolling equipment.

The conventional PE thermal shrinkage film rolling equipment is generally provided with a film rolling roller and a traction roller, PE thermal shrinkage films are wound on the peripheral wall of the film rolling roller, and the film rolling roller and the traction roller drive the PE thermal shrinkage films to be continuously wound on the peripheral wall of the film rolling roller. In this in-process PE pyrocondensation membrane edge often is because PE pyrocondensation membrane and equipment conflict produce the fold, needs the workman to pay attention to at every moment whether PE pyrocondensation membrane is flat at the roll up membrane in-process, if appear the fold needs the workman to flatten PE pyrocondensation membrane as soon as possible with the hand, avoids the fold to be rolled into PE pyrocondensation membrane and causes PE pyrocondensation membrane folding in rolling up, reduces PE pyrocondensation membrane and rolls up the quality of membrane.

Aiming at the existing heat-shrinkable film rolling equipment, the inventor finds that in the process of rolling the PE heat-shrinkable film to the peripheral wall of a film rolling roller, workers are required to pay attention to the PE heat-shrinkable film, avoid wrinkling caused by extrusion of the PE heat-shrinkable film and the equipment and flatten the PE heat-shrinkable film by hands, and the process requires the workers to pay attention to the PE heat-shrinkable film and flatten the PE heat-shrinkable film all the time, so that larger human resources are occupied.

Disclosure of Invention

In order to flatten the PE heat-shrinkable film in the PE heat-shrinkable film rolling process, reduce folds and folds of the PE heat-shrinkable film and improve the film rolling quality of the PE heat-shrinkable film, the utility model provides a PE heat-shrinkable film rolling device.

The PE heat-shrinkable film rolling device provided by the utility model adopts the following technical scheme:

the PE heat-shrinkable film rolling device comprises a frame, a traction roller and a film rolling roller, wherein the film rolling roller and the traction roller are both arranged on the frame, the traction roller rotates to drive the PE heat-shrinkable film to enter the film rolling device, the film rolling roller rotates to wind the PE heat-shrinkable film on the peripheral wall of the PE heat-shrinkable film rolling device, a flattening device for flattening folds and turnovers generated by the PE heat-shrinkable film in the film rolling process is further arranged between the frame and the traction roller corresponding to the film rolling roller,

the flattening arm is connected to the frame, the flattening arm is connected with the flattening roller, the flattening roller can conflict on PE pyrocondensation membrane surface, and the flattening arm can drive the flattening roller and slide the fold of expansion PE pyrocondensation membrane along PE pyrocondensation membrane surface.

Through adopting above-mentioned technical scheme, when the user uses, the PE pyrocondensation membrane winding that the user will process the completion is at the periphery wall of rolling up the membrane roller to set up PE pyrocondensation membrane at the periphery wall of pull roll, later the user rotates and rolls up membrane roller and pull roll, thereby make and roll up membrane roller and pull roll syntropy rotation drive PE pyrocondensation membrane rolling up the periphery wall of rolling up the membrane roller, at this in-process flattening arm repeatedly along the width direction removal of PE pyrocondensation membrane, thereby drive the flattening roller and contradict in PE pyrocondensation membrane surface, thereby slide fold or folding part expansion of PE pyrocondensation membrane along PE pyrocondensation membrane surface thereby prevent fold and folding part of PE pyrocondensation membrane by the periphery wall of rolling up the membrane roller, improve the membrane quality of rolling up.

Optionally, the frame is connected with two corresponding above-mentioned flattening devices along width direction near both sides position department, and the flattening roller of arbitrary two corresponding flattening devices can be contradicted respectively in PE pyrocondensation membrane upper surface and lower surface.

Through adopting above-mentioned technical scheme, when the user uses, lie in the frame along width direction with two corresponding flattening rollers of one side respectively contradict in PE pyrocondensation membrane upper surface and lower surface, afterwards two flattening walls slide and drive two flattening rollers and remove to the upper surface and the lower surface flattening PE pyrocondensation membrane along the PE pyrocondensation membrane, improve PE pyrocondensation membrane's flattening effect.

Optionally, the outer peripheral surface of each flattening roller is arranged smoothly.

Through adopting above-mentioned technical scheme, when the user uses, the smooth setting of flattening roller reduces because flattening roller removes the in-process because flattening roller global and PE pyrocondensation membrane's friction produced fold.

Optionally, each flattening device further comprises a driving arm, the flattening arms of the same flattening device are connected to the driving arms, and the flattening arms of the two corresponding flattening devices are respectively connected to one sides of the two driving arms, which are close to each other; each driving arm is connected with at least two rocker arms in a switching mode, rocker arms connected with the same driving arm are located on the same horizontal plane, each rocker arm is connected with the frame, the corresponding driving arm can be driven to rotate through rotation of the rocker arms, the driving arm drives the flattening arm to move, and the flattening roller is driven to slide along the PE heat-shrinkable film surface.

Through adopting above-mentioned technical scheme, when the user uses, the user rotates the rocking arm, connect in a plurality of rocking arms rotations of same actuating arm and drive the actuating arm and do circular motion, the actuating arm drives the exhibition flat roller and moves to the position of contradicting in PE pyrocondensation membrane, afterwards the rocking arm continues to rotate and drive actuating arm and exhibition flat roller and continue to move thereby drive exhibition flat roller and slide to be close to PE pyrocondensation membrane border position department by being close to PE pyrocondensation membrane intermediate position department, exhibition flat roller is with PE pyrocondensation membrane exhibition, afterwards the exhibition flat roller continues to do approximate circular motion and moves to keeping away from PE pyrocondensation membrane direction and make exhibition flat roller and PE pyrocondensation membrane separate, exhibition flat roller is again along with the rotation motion back PE pyrocondensation membrane of actuating arm and is close to intermediate position department, exhibition flat roller continues to slide exhibition flat PE pyrocondensation membrane towards PE pyrocondensation membrane border afterwards.

Optionally, each flattening arm is connected with the slide bar near one side of the actuating arm, the slide bar slides and locates the actuating arm that corresponds, and the slide bar can slide along the thickness direction of actuating arm, and flattening arm can move along with the slide bar.

Optionally, each flattening arm is connected with a buffer spring corresponding to the position of the self sliding rod, the buffer spring is sleeved on the outer side of the corresponding sliding rod, one end of the buffer spring is abutted against the corresponding driving arm, and when two corresponding flattening rollers are abutted against the upper surface and the lower surface of the PE heat-shrinkable film respectively, the buffer spring applies acting force to the corresponding flattening arm to enable the buffering arm to move in a direction away from the corresponding driving arm.

Through adopting above-mentioned technical scheme, when the user uses, the exhibition arm rotates to make the exhibition roller conflict in PE pyrocondensation membrane position department along with the actuating arm, be close to PE pyrocondensation membrane along the upper surface and the lower surface of PE pyrocondensation membrane respectively of the corresponding exhibition roller of width direction homonymy, make the exhibition roller that corresponds press from both sides tight PE pyrocondensation membrane jointly, afterwards along with two actuating arms rotate to mutual near position department, the exhibition arm that two corresponding exhibition rollers promote self connection respectively moves to the actuating arm direction, the slide bar slides along the thickness direction of actuating arm, this in-process compression buffer spring, under buffer spring's elastic action, make exhibition arm and exhibition roller conflict in PE pyrocondensation membrane surface all the time, improve the effect of exhibition device exhibition PE pyrocondensation membrane.

Optionally, the rack is also connected with an adjusting screw, the adjusting screw is horizontally arranged, and threads at two ends of the adjusting screw are opposite in rotation direction; the adjusting screw is provided with an adjusting frame in a threaded connection mode along the width direction of the frame, the adjusting frame can move along the axial direction of the adjusting screw, two corresponding driving arms located on the same side of the frame are connected to the same adjusting frame, and the adjusting frame can move to drive the corresponding driving arms.

Through adopting above-mentioned technical scheme, when the user uses, the user rotates adjusting screw and can drive the alignment jig along adjusting screw to being close to each other or keeping away from the direction removal each other to can be according to the position of two actuating arms that the width adjustment of PE pyrocondensation membrane corresponds, make flattening device can adapt to the flattening work needs of the PE pyrocondensation membrane of different width.

Optionally, the frame is close to adjusting screw position department still is connected with the guide bar, the length direction of guide bar and adjusting screw's axial parallel arrangement, each equal sliding connection of adjusting frame is in the guide bar, and the adjusting frame can slide along the length direction of guide bar.

Through adopting above-mentioned technical scheme, when the user uses, the guide bar plays the effect of guiding the direction of movement of alignment jig, prevents that the alignment jig from taking place crookedly and misplacement.

Optionally, be provided with two flattening rollers between frame correspondence roll up membrane roller and the flattening device, two the axial mutual parallel arrangement of flattening roller, two flattening rollers can conflict respectively in PE pyrocondensation membrane's top and bottom, and the opposite setting of the spiral direction of two flattening rollers, two flattening rollers pull PE pyrocondensation membrane jointly to roll up membrane roller direction and remove.

Through adopting above-mentioned technical scheme, when the user uses, the flattening roller further flattens the PE pyrocondensation membrane after flattening, makes the smooth roll-up of PE pyrocondensation membrane at the periphery wall of film roller.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic illustration of a turntable construction according to an embodiment of the present utility model;

FIG. 3 is a schematic view of an adjusting bracket configuration according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a configuration of a flattening device in accordance with an embodiment of the present utility model;

FIG. 5 is a schematic view showing another operational state construction of the flattening apparatus of the embodiment of the present utility model.

Reference numerals illustrate: 1. PE thermal shrinkage film; 2. a frame; 3. a traction roller; 31. a traction motor; 32. a drive belt; 4. a support roller; 5. a film winding roller; 6. a flattening roller; 61. a connecting gear; 62. a driving motor; 7. adjusting a screw; 71. a turntable; 72. a guide rod; 8. an adjusting frame; 9. a flattening device; 91. a driving arm; 92. a rocker arm; 921. a transmission gear; 93. a rotating motor; 931. a drive gear; 94. a slide bar; 95. a flattening arm; 96. a buffer spring; 97. flattening rollers.

Detailed Description

The utility model is described in further detail below with reference to fig. 1-5.

The embodiment of the utility model discloses a PE heat-shrinkable film rolling device, which referring to figures 1 and 2, comprises a frame 2, a traction roller 3 which is connected with the frame 2 in a switching way and is used for traction of the PE heat-shrinkable film 1, a support roller 4 which is connected with the frame 2 in a switching way and is used for supporting the PE heat-shrinkable film 1, and a film rolling roller 5 which is connected with the frame 2 in a switching way and is used for rolling the PE heat-shrinkable film 1 into the peripheral wall of the PE heat-shrinkable film. The axial directions of the traction roller 3, the supporting roller 4 and the film winding roller 5 are all arranged along the width direction of the frame 2. The traction roller 3, the support roller 4 and the film winding roller 5 are sleeved with a driving belt 32, a traction motor 31 is installed at one end of the traction roller 3, the traction motor 31 can drive the traction roller 3 to rotate, and the traction roller 3 can drive the support roller 4 and the film winding roller 5 to rotate through the driving belt 32. The rotation directions of the traction roller 3, the supporting roller 4 and the film winding roller 5 are arranged in the same direction. The frame 2 corresponds the position department rotation between roll up membrane roller 5 and the backing roll 4 and is connected with two flattening rollers 6, and the axial of two flattening rollers 6 all sets up along the width direction of frame 2, and two flattening rollers 6 are along the array of frame 2 direction of height setting, and PE heat shrinkage film 1 can be through the clearance setting between two flattening rollers 6. The two flattening rollers 6 can respectively abut against the upper surface and the lower surface of the PE heat shrink film 1. One end of each flattening roller 6 close to the traction motor 31 is fixedly connected with a connecting gear 61, and the two connecting gears 61 are meshed with each other. One end of the flattening roller 6 is fixedly connected with a driving motor 62, the driving motor 62 can drive the flattening roller 6 connected with the driving motor to rotate, the corresponding connecting gear 61 can be driven to rotate by the rotation of the flattening roller 6, the other flattening roller 6 is driven to rotate by the connecting gear 61, the rotation directions of the two flattening rollers 6 are opposite, and the two flattening rollers 6 can jointly drive the PE heat-shrinkable film 1 to move towards the film winding roller 5 through a gap between the two flattening rollers 6.

When the PE heat-shrinkable film 1 is used by a user, the user sets up the PE heat-shrinkable film 1 on the top of the supporting roller 4 of the traction roller 3, and then passes through the gap between the two flattening rollers 6 and fixes the PE heat-shrinkable film 1 on the peripheral wall of the film winding roller 5. Then the user starts the traction motor 31 and the driving motor 62, the traction motor 31 drives the traction roller 3 to rotate and drives the supporting roller 4 and the film winding roller 5 to rotate in the same direction through the driving belt 32. The rotation of the driving motor 62 drives the connected flattening rollers 6 to rotate, and the rotation of the flattening rollers 6 drives the corresponding connecting gears 61 to rotate, so that the other flattening roller 6 is driven to rotate through the connecting gears 61, and the two flattening rollers 6 rotate in opposite directions. The PE thermal shrinkage film 1 moves along with the top surfaces of the traction roller 3 and the support roller 4 towards the film winding roller 5 and passes through a gap between two flattening rollers 6, and the two flattening rollers 6 respectively abut against the upper surface and the lower surface of the PE thermal shrinkage film 1, so that the PE thermal shrinkage film 1 is flattened by the flattening rollers 6, and the PE thermal shrinkage film 1 is wound on the peripheral wall of the film winding roller 5 along with the rotation of the film winding roller 5. The two flattening rollers 6 flatten the tilting position of the PE heat-shrinkable film 1, so that the PE heat-shrinkable film 1 is orderly rolled up to the peripheral wall of the film rolling roller 5.

Referring to fig. 2 to 4, an adjusting screw 7 is rotatably connected to the frame 2 at a position corresponding to between the supporting roller 4 and the pulling roller 3, and a length direction of the adjusting screw 7 is set along a width direction of the frame 2. The adjusting screw rod 7 is a bidirectional screw rod, and screw teeth at positions close to two ends of the adjusting screw rod 7 are oppositely arranged in a screwing direction. One end of the adjusting screw 7, which is far away from the driving motor 62, is fixedly connected with a rotary table 71, and the rotary table 71 can drive the adjusting screw 7 to rotate. The adjusting screw 7 is close to the equal threaded connection of both ends position department and has adjusting frame 8, and adjusting frame 8 can follow adjusting screw 7's axial displacement. The frame 2 is fixedly connected with a guide rod 72 at a position corresponding to the adjusting frame 8, and the length direction of the guide rod 72 and the length direction of the adjusting screw 7 are mutually parallel. Both adjusting frames 8 are slidably connected to the guide rod 72, and the adjusting frames 8 can slide along the length direction of the guide rod 72.

Referring to fig. 2 to 4, each of the adjustment brackets 8 is provided with a flattening device 9 at a position near both ends in the height direction of the frame 2, and two flattening devices 9 connected to the same adjustment bracket 8 are a group of flattening devices 9. Two flattening devices 9 of the same group are respectively positioned at the top and the bottom of the PE heat shrink film 1. Each flattening device 9 includes a driving arm 91 and two rocker arms 92 connected to the driving arm 91, and the two rocker arms 92 of the same flattening device 9 are arranged in an array along the length direction of the driving arm 91. One end of each rocker arm 92 far away from the driving arm 91 is connected to the corresponding adjusting frame 8 in a switching mode, and one end of each rocker arm 92 far away from the driving arm 91 penetrates through the adjusting frame 8. One end of each rocker arm 92 far away from the driving arm 91 is fixedly connected with a transmission gear 921, and the transmission gear 921 is positioned on one side of the adjusting frame 8 far away from the driving arm 91.

Referring to fig. 3-5, each flattening device 9 further includes a driving gear 931 and a rotation motor 93, each rotation motor 93 is fixedly connected to the adjusting frame 8, rotation directions of the two rotation motors 93 of the two flattening devices 9 of the same group are opposite, and rotation speeds of the two rotation motors 93 of the two flattening devices 9 of the same group are the same. The output shaft of the rotation motor 93 is fixedly connected to the corresponding driving gear 931, and the rotation motor 93 can drive the corresponding driving gear 931 to rotate. The driving gear 931 is located between the two transmission gears 921 of the same flattening device 9 and engaged with the two transmission gears 921 of the same flattening device 9, and the rotation of the driving gear 931 can drive the two transmission gears 921 engaged with the driving gear 931 to rotate so as to drive the corresponding rocker arms 92 to rotate. The rotation of the two rocker arms 92 of the same flattening device 9 can drive the driving arms 91 to do circular motion. Each driving arm 91 is provided with a sliding rod 94 in a sliding manner at a position close to the middle of the frame 2, the sliding rod 94 is axially arranged along the height direction of the frame 2, and the sliding rod 94 can axially slide along the driving arm 91. One end, close to each other, of two slide bars 94 of the flattening device 9 in the same group is fixedly connected with a flattening arm 95, and the slide bars 94 slide to drive the flattening arm 95 fixedly connected with the slide bars to move. Each flattening arm 95 corresponds the slide bar 94 position department of self rigid coupling and all fixedly connected with buffer spring 96, and buffer spring 96 cover is located the outside setting of corresponding slide bar 94, and buffer spring 96's one end can be contradicted in the setting of corresponding actuating arm 91. The two flattening arms 95 of the two flattening devices 9 in the same group are mutually adjacent to one side and are respectively connected with a flattening roller 97 in a switching way, the axial direction of the flattening rollers 97 is arranged along the length direction of the frame 2, and the surface of each flattening roller 97 is smooth. The nip rollers 97 of the two nip devices 9 of the same group can respectively collide with the upper surface and the lower surface of the PE heat shrink film 1. The nip rollers 97 of the two nip devices 9 of the same group can clamp the PE heat shrink film 1 together.

The embodiment of the utility model provides a PE heat-shrinkable film rolling device, which has the implementation principle that: the user sets up PE heat shrink film 1 on top of pull roll 3 and backing roll 4, after which one end of PE heat shrink film 1 is fixed on the peripheral wall of film winding roll 5 through the gap between two flattening rolls 6. Then, the user starts the traction motor 31 and the driving motor 62, and the traction motor 31 drives the traction roller 3 to rotate, so that the supporting roller 4 and the film winding roller 5 are driven to rotate at the same speed through the driving belt 32. The driving motor 62 drives the two flattening rollers 6 to rotate in opposite directions through the connecting gear 61, the two flattening rollers 6 respectively abut against the upper surface and the lower surface of the PE heat-shrinkable film 1, and the two flattening rollers 6 can jointly push the PE heat-shrinkable film 1 to move towards the film winding roller 5.

After that, the user starts the four rotation motors 93, and the rotation motors 93 drive the corresponding driving gears 931 to rotate, and the driving gears 931 drive the two transmission gears 921 engaged with themselves to rotate in the same direction. The rotation of the transmission gear 921 drives the rocker arms 92 connected to the transmission gear 921 to rotate, and the two rocker arms 92 of the same flattening device 9 rotate along the same direction to drive the driving arm 91 to do circular motion. The movement of the driving arm 91 drives the sliding rod 94, the flattening arm 95 and the flattening roller 97 to move. The two driving arms 91 of the flattening device 9 respectively do circular movements with the rocker arms 92 connected with the driving arms in opposite rotation directions. The two driving arms 91 of the flattening device 9 can simultaneously rotate to a position close to the middle position of the PE heat-shrinkable film 1, at this time, when the flattening arms 95 connected with the two driving arms 91 move to a position close to the middle position of the PE heat-shrinkable film 1, the flattening rollers 97 connected with the two flattening arms 95 respectively abut against the upper surface and the lower surface of the PE heat-shrinkable film 1, and the two flattening rollers 97 jointly clamp the PE heat-shrinkable film 1, and at this time, the two flattening rollers 97 mutually corresponding mutually abut against each other through the PE heat-shrinkable film 1. Then, as the rotation motor 93 rotates, the flattening rollers 97 gradually move from the middle position close to the PE heat shrink film 1 to the edge position of the PE heat shrink film 1, and in the process, the two flattening rollers 97 of the same flattening device 9 respectively flatten the folds and the tilting of the surface of the PE heat shrink film 1 from the upper surface and the lower surface. Along with the circular motion of the driving arms 91, the two driving arms 91 of the same group of flattening devices 9 gradually move towards the direction of approaching each other, and as the two flattening rollers 97 of the same group of flattening devices 9 mutually collide, the flattening rollers 97 push the flattening arms 95 and the sliding rods 94 to move towards the direction of approaching the corresponding driving arms 91, the buffer springs 96 are compressed in the process, and the buffer springs 96 apply the acting force to the flattening arms 95 to move towards the direction of the PE heat-shrinkable film 1, so that the flattening rollers 97 more closely collide with the PE heat-shrinkable film 1, and the flattening effect is improved. When two driving arms 91 of the same group of flattening devices 9 move to the position close to each other, the compression amount of the buffer spring 96 reaches the maximum, then the driving arms 91 continue to do circular motion, along with the movement of the driving arms 91 of the two flattening devices 9 of the same group of flattening devices 9 to the direction away from each other, the two flattening rollers 97 do not finally collide with the surface of the PE heat-shrinkable film 1 any more, the PE heat-shrinkable film 1 is prevented from forming folds in the moving process of the flattening rollers 97, then the driving arms 91 continue to move to the middle position of the PE heat-shrinkable film 1 along with the rotation of the driving arms 91, the process is repeated, the effect of flattening the PE heat-shrinkable film 1 is achieved in the process of rolling up the PE heat-shrinkable film 1, the PE heat-shrinkable film 1 is automatically flattened by driving the motor 93 without manual operation, and labor is reduced. Simultaneously, a user can rotate the rotary table 71 to drive the adjusting screw 7 to rotate so as to drive the two adjusting frames 8 to slide towards the directions of approaching or separating from each other, so that the flattening processing requirements of PE heat shrink films 1 with different widths are met, and the use is flexible and convenient for the user.

The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. The utility model provides a PE thermal shrinkage film rolling device, includes frame (2), pull roll (3) and rolls up membrane roller (5), roll up membrane roller (5) with pull roll (3) are all installed in frame (2), and pull roll (3) rotate and drive PE thermal shrinkage film (1) and get into and roll up the membrane device, roll up membrane roller (5) rotation with PE thermal shrinkage film (1) winding at self perisporium, its characterized in that: a flattening device (9) for expanding folds and folds generated by the PE heat-shrinkable film (1) in the film rolling process is arranged between the frame (2) corresponding to the traction roller (3) and the film rolling roller (5), the flattening device (9) comprises,

the flattening arm (95) is connected to the frame (2), the flattening arm (95) is connected with the flattening roller (97), the flattening roller (97) can be abutted to the surface of the PE heat-shrinkable film (1), and the flattening arm (95) can drive the flattening roller (97) to slide along the surface of the PE heat-shrinkable film (1) to unfold the folds of the PE heat-shrinkable film (1).

2. The PE heat shrink film wrapping apparatus according to claim 1, wherein: the machine frame (2) is connected with two corresponding flattening devices (9) at positions close to two sides in the width direction, and flattening rollers (97) of any two corresponding flattening devices (9) can respectively abut against the upper surface and the lower surface of the PE heat-shrinkable film (1).

3. The PE heat shrink film wrapping apparatus according to claim 2, wherein: the peripheral surface of each flattening roller (97) is smoothly arranged.

4. The PE heat shrink film wrapping apparatus according to claim 2, wherein: each flattening device (9) further comprises a driving arm (91), the flattening arms (95) of the same flattening device (9) are connected to the driving arms (91), and the flattening arms (95) of the two corresponding flattening devices (9) are respectively connected to one sides, close to each other, of the two driving arms (91); each driving arm (91) is connected with at least two rocker arms (92) in a switching mode, the rocker arms (92) connected to the same driving arm (91) are located on the same horizontal plane, each rocker arm (92) is connected to the frame (2), the corresponding driving arm (91) can be driven to rotate by rotation of the rocker arm (92), the driving arm (91) drives the flattening arm (95) to move, and the flattening roller (97) is driven to slide along the surface of the PE heat-shrinkable film (1).

5. The PE heat shrink film wrapping apparatus according to claim 4, wherein: each flattening arm (95) is connected with a sliding rod (94) on one side close to the driving arm (91), the sliding rods (94) are slidably arranged on the corresponding driving arms (91), the sliding rods (94) can slide along the thickness direction of the driving arms (91), and the flattening arms (95) can move along with the sliding rods (94).

6. The PE heat shrink film wrapping apparatus according to claim 5, wherein: each flattening arm (95) corresponds self slide bar (94) position department and all is connected with buffer spring (96), and buffer spring (96) cover is located the slide bar (94) outside that corresponds, and buffer spring (96) one end is contradicted in corresponding actuating arm (91), and when two corresponding flattening rollers (97) were contradicted respectively in PE heat shrinkage film (1) upper surface and lower surface, buffer spring (96) exerted the effort that makes it to keeping away from the removal of corresponding actuating arm (91) direction to corresponding flattening arm (95).

7. The PE heat shrink film wrapping apparatus according to claim 4, wherein: the machine frame (2) is also connected with an adjusting screw (7), the adjusting screw (7) is horizontally arranged, and threads at two ends of the adjusting screw (7) are opposite in screwing direction; the adjusting screw (7) is connected with an adjusting frame (8) along the width direction of the frame (2) and is close to both ends, the adjusting frame (8) can move along the axial direction of the adjusting screw (7), two corresponding driving arms (91) positioned on the same side of the frame (2) are connected with the same adjusting frame (8), and the corresponding driving arms (91) can be driven to move by the movement of the adjusting frame (8).

8. The PE heat shrink film wrapping apparatus according to claim 7, wherein: the machine frame (2) is close to the position of the adjusting screw (7) and is also connected with a guide rod (72), the length direction of the guide rod (72) is parallel to the axial direction of the adjusting screw (7), each adjusting frame (8) is connected with the guide rod (72) in a sliding mode, and the adjusting frames (8) can slide along the length direction of the guide rod (72).

9. The PE heat shrink film wrapping apparatus according to claim 1, wherein: two flattening rollers (6) are arranged between the corresponding film rolling rollers (5) of the frame (2) and the flattening device (9), the two flattening rollers (6) are axially arranged in parallel, the two flattening rollers (6) can respectively abut against the top and the bottom of the PE heat-shrinkable film (1), the rotation directions of the two flattening rollers (6) are opposite, and the two flattening rollers (6) jointly pull the PE heat-shrinkable film (1) to move towards the film rolling rollers (5).