PE film stretching forming device

Abstract

The invention belongs to the technical field of PE film processing, and discloses a PE film stretch forming device which comprises a stretch forming device body and further comprises a conveying roller arranged on one side of the inner end of the stretch forming device body and a feeding roller. When the laser scanning monitoring device detects that the thickness of the middle of the PE film on the top of the conveying roller and the thickness of the middle of the PE film on the top of the feeding roller are not uniform, the cutting mechanism can be started to drive the whole supporting roller to move upwards to support the middle of the PE film, the cutting part on the top of the cutting mechanism can cut the middle of the PE film downwards, and then a draught fan can be started; negative pressure is generated by sucking air into and out of the adsorption assembly through the ventilation assembly, then suction force is generated on the surface of the supporting roller to adsorb the part, with the uneven thickness, of the PE film, the supporting roller is started to rotate and wind, the part with the uneven thickness is automatically cut off, and wrinkles during stretching are avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of PE film processing, in particular to a PE film stretching and forming device. Background Art

[0002] PE film stretching and forming device is a special equipment for producing high-performance PE film. It stretches the PE film through specific process steps to improve its physical properties and appearance quality. The working principle mainly includes preheating, stretching, heat setting and cooling steps: Preheating: The PE film is heated to the process temperature by the preheating roller group to soften it and have good plasticity and stretchability; Stretching: The preheated PE film is stretched longitudinally or transversely by the stretching roller group. During the stretching process, the molecular chains of the film are rearranged along the stretching direction, thereby improving the tensile strength and stiffness of the film; Heat setting: The stretched PE film is heat treated by the heat setting roller group to fix the orientation structure of the film and maintain the performance after stretching; Cooling: The cooling roller group cools the stretched and set PE film to room temperature to complete the entire stretching and forming process.

[0003] When PE film is stretched, wrinkles may occur due to various factors. The most common reason is that the thickness of the substrate is uneven during production, which leads to uneven force at each stretching position, resulting in wrinkles. Although strict control is carried out during the production of the substrate to reduce the error, there is still some uneven thickness, which affects the subsequent stretching effect, so it needs to be improved. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a PE film stretching and forming device, which has the advantage of being convenient for directly cutting off the uneven thickness part.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a PE film stretching and forming device, comprising a stretching and forming device body, and also comprising: a conveying roller, the conveying roller is arranged on one side of the inner end of the stretching and forming device body, a feeding roller, the feeding roller is arranged at the inner end of the stretching and forming device body, and the feeding roller and the conveying roller are symmetrical through the support roller; a laser scanning monitoring device, the laser scanning monitoring device is arranged on the top of the stretching and forming device body, and the laser scanning monitoring device is arranged directly above the support roller; a cutting mechanism, the cutting mechanism is arranged on one side of the surface of the stretching and forming device body; an adsorption component, the adsorption component is arranged inside the support roller and the feeding roller, and the top end of the adsorption component is connected to the ventilation component; wherein the adsorption component includes a negative pressure pipeline arranged inside the support roller and the feeding roller, the outer end of the inner cavity of the negative pressure pipeline is provided with a first one-way valve disc, the end surfaces of the support roller and the feeding roller are movably sleeved with a connecting ring, and the middle part of the top end of the connecting ring is fixedly connected with a first ventilation pipe.

[0006] Preferably, the cutting mechanism comprises a movable slot, a movable frame, a driving motor group and a cutting blade; The end of the supporting roller is slidably connected to the inside of the movable groove, the movable frame is arranged at the end of one side of the supporting roller, the driving motor group is arranged on one side of the surface of the stretching forming device body, and the output end of the driving motor group is threadedly sleeved with the movable frame, and the cutting blade is threadedly sleeved on the top of the output end of the driving motor group.

[0007] Preferably, the output end of the driving motor group adopts a bidirectional threaded design.

[0008] Preferably, a waste frame located at the lower left of the support roller is provided inside the body of the stretch forming device, and a cutter located below the support roller is provided at the inner end of the body of the stretch forming device.

[0009] Preferably, the ventilation assembly includes a second ventilation pipe, a ventilation valve flap and a connecting spring; The second ventilation pipe is arranged inside the body of the stretching forming device, and the second ventilation pipe is movably connected to the top end of the first ventilation pipe. The ventilation valve flap is arranged at the end of the second ventilation pipe, and the ventilation valve flap is elastically connected to the inside of the second ventilation pipe through a connecting spring.

[0010] Preferably, a clamping assembly located at the top between the conveying roller and the supporting roller is arranged on the inner side of the stretch forming device body, and the clamping assembly includes a clamping chassis, a first hydraulic cylinder, and an upper clamping plate; The clamping frame is slidably connected to the inner side of the stretch forming device body, the first hydraulic cylinder is arranged on one side of the top of the clamping frame, the upper clamping plate is arranged at the bottom of the output end of the first hydraulic cylinder, and rollers are arranged on the inner sides of the clamping frame and the upper clamping plate.

[0011] Preferably, a fan is provided at one end of the top of the clamping chassis, the fan is slidably connected to the surface of the stretching and forming device body, and the output end of the fan is directly connected to the end of the second ventilation pipe.

[0012] Preferably, a second hydraulic cylinder located on one side of the top of the clamping frame is provided on one side of the body surface of the stretching forming device, and an output end of the second hydraulic cylinder is fixedly connected to one side of the top of the clamping frame.

[0013] Preferably, a negative pressure assembly is provided on one side of the interior of the clamping chassis, and the negative pressure assembly includes an air cylinder, a piston rod, a connecting pipe, an adsorption mesh plate and a second one-way valve flap; The air cylinder is arranged on one side of the top of the clamping frame, the piston rod is movably installed inside the air cylinder, the bottom end of the piston rod is fixedly connected to the top of the upper clamping plate, the adsorption mesh plate is arranged on one side of the bottom of the upper clamping plate, the top of the air cylinder is connected to the adsorption mesh plate through a connecting pipe, and the second one-way valve flap is arranged on one side of the bottom end of the air cylinder.

[0014] Preferably, a plurality of holes are arranged inside the adsorption mesh plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The above technical solution is provided with a cutting mechanism, an adsorption component, a ventilation component and a fan. When the laser scanning monitoring device detects that the thickness of the middle part of the PE film on the top of the conveying roller and the feeding roller is uneven, the cutting mechanism can be started to drive the support roller to move upward as a whole to support the middle part of the PE film, and the cutting part on the top of the cutting mechanism will cut the middle part of the PE film downward, and then the fan can be started to suck air into the adsorption component through the ventilation component to generate negative pressure, thereby causing suction to be generated on the surface of the support roller to adsorb the uneven thickness part of the PE film, and the support roller is started to rotate and wind, so as to realize automatic cutting of the uneven thickness part to avoid wrinkles during stretching.

[0016] The present invention provides a clamping component and a negative pressure component. When the uneven thickness portion is cut off, the clamping component can be started to clamp the PE film on the side of the conveying roller. After the film is completely clamped, the negative pressure suction force inside the negative pressure component acts on the broken portion of the PE film for adsorption, so as to clamp the broken portion of the PE film and facilitate subsequent smooth docking to the position of the feeding roller for winding.

[0017] The present invention provides a ventilation component, a fan and a second hydraulic cylinder. When the cutting mechanism is driven to reset, the supporting roller as a whole will be reset downward synchronously. Then, the second hydraulic cylinder can be started smoothly, so that the output end of the second hydraulic cylinder drives the fan and the clamping component to move as a whole toward the side close to the feeding roller, so that the output end of the fan is aligned with the end of the ventilation component on the back of the feeding roller. At this time, the fan can be started, and negative pressure is generated by suction through the ventilation component and the adsorption component, so that suction is generated on the surface of the feeding roller to adsorb part of the film at the position of the negative pressure component. Finally, the feeding roller can be started to continue to reel up the film at that position to maintain the continuity of feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a structural schematic diagram of the back side of the present invention; Figure 3 It is a partial structural schematic diagram of the side of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the cutting mechanism of the present invention; Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at point A in the middle; Figure 6 for Figure 4 A schematic diagram of the local enlarged structure at B in the middle; Figure 7 It is a schematic diagram of the structure of the clamping assembly of the present invention; Figure 8 It is a schematic cross-sectional structural diagram of the negative pressure assembly of the present invention.

[0019] In the figure: 1, stretch forming device body; 2, conveying roller; 3, supporting roller; 4, feeding roller; 5, laser scanning monitoring device; 6, cutting mechanism; 601, movable groove; 602, movable frame; 603, driving motor group; 604, cutting blade; 7, waste frame; 8, adsorption component; 801, negative pressure pipeline; 802, first one-way valve disc; 803, connecting ring; 804, first ventilation pipe; 9, ventilation component; 901, second ventilation pipe; 902, ventilation valve disc; 903, connecting spring; 10, fan; 11, clamping assembly; 1101, clamping base; 1102, first hydraulic cylinder; 1103, upper clamping plate; 12, second hydraulic cylinder; 13, negative pressure assembly; 1301, air cylinder; 1302, piston rod; 1303, connecting pipe; 1304, adsorption mesh; 1305, second one-way valve disc; 14, cutter. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 8 As shown, the present invention provides a PE film stretching and forming device, including a stretching and forming device body 1, and also includes: a conveying roller 2, the conveying roller 2 is arranged on one side of the inner end of the stretching and forming device body 1, a feeding roller 4, the feeding roller 4 is arranged at the inner end of the stretching and forming device body 1, and the feeding roller 4 and the conveying roller 2 are symmetrical through a supporting roller 3; a laser scanning monitoring device 5, the laser scanning monitoring device 5 is arranged on the top of the stretching and forming device body 1, and the laser scanning monitoring device 5 is arranged just above the supporting roller 3; a cutting mechanism 6, the cutting mechanism The structure 6 is arranged on one side of the surface of the stretching forming device body 1; the adsorption component 8 is arranged inside the support roller 3 and the feeding roller 4, and the top of the adsorption component 8 is connected with the ventilation component 9; wherein, the adsorption component 8 includes a negative pressure pipe 801 arranged inside the support roller 3 and the feeding roller 4, and a first one-way valve flap 802 is arranged at the outer end of the inner cavity of the negative pressure pipe 801, and a connecting ring 803 is movably sleeved on the end surface of the support roller 3 and the feeding roller 4, and a first ventilation pipe 804 is fixedly connected in the middle of the top of the connecting ring 803.

[0022] When the laser scanning monitoring device 5 detects that the thickness of the middle part of the PE film on the top of the conveying roller 2 and the feeding roller 4 begins to be uneven, the cutting mechanism 6 can be operated to drive the supporting roller 3 upward as a whole to support the middle part of the PE film, and then the middle part of the film can be cut off by the operation of the cutting mechanism 6, and then by starting the fan 10, the inside of the negative pressure pipe 801 can be sucked through the ventilation component 9, the first ventilation pipe 804, and the connecting ring 803, so that the first one-way valve flap 802 is flipped open in one direction, so that the surface suction of the supporting roller 3 adsorbs the uneven thickness part of the top film for subsequent rotation, winding and collection.

[0023] like Figure 4 As shown, the cutting mechanism 6 includes a movable slot 601, a movable frame 602, a driving motor group 603 and a cutting blade 604; The end of the supporting roller 3 is slidably connected to the inside of the movable groove 601, the movable frame 602 is arranged at the end of one side of the supporting roller 3, the driving motor group 603 is arranged on one side of the surface of the stretching forming device body 1, and the output end of the driving motor group 603 is threadedly connected to the movable frame 602, and the cutting blade 604 is threadedly connected to the top of the output end of the driving motor group 603.

[0024] By adopting the above solution, the overall up-and-down movement of the support roller 3 can be limited by the sliding connection between the inside of the movable groove 601 and the end of the support roller 3 .

[0025] like Figure 4 As shown, the output end of the driving motor group 603 adopts a bidirectional threaded design.

[0026] By adopting the above solution, the movable frame 602 and the cutting blade 604 can be driven to move toward or away from each other through the design of the bidirectional thread at the output end of the driving motor group 603.

[0027] like Figure 3 As shown, a waste frame 7 is provided inside the stretch forming device body 1 and is located at the lower left of the support roller 3 , and a cutter 14 is provided at the inner end of the stretch forming device body 1 and is located below the support roller 3 .

[0028] With the above solution, by providing the cutter 14, when the support roller 3 with the film of uneven thickness moves downward, the top of the cutter 14 will cut the film, and finally the film will fall into the waste frame 7 for collection.

[0029] like Figure 4 and Figure 5 As shown, the ventilation assembly 9 includes a second ventilation pipe 901, a ventilation valve flap 902 and a connecting spring 903; The second ventilation pipe 901 is arranged inside the stretching forming device body 1, and the second ventilation pipe 901 is movably connected to the top end of the first ventilation pipe 804, and the ventilation valve flap 902 is arranged at the end of the second ventilation pipe 901, and the ventilation valve flap 902 is elastically connected to the inside of the second ventilation pipe 901 through a connecting spring 903.

[0030] The above solution is adopted: by providing a connecting spring 903 , the elastic force of the connecting spring 903 will push the ventilation valve flap 902 to move to one side as a whole, thereby blocking the end of the second ventilation pipe 901 .

[0031] like Figure 7 As shown, a clamping assembly 11 is provided on the inner side of the stretch forming device body 1 and is located at the top between the conveying roller 2 and the supporting roller 3. The clamping assembly 11 includes a clamping base frame 1101, a first hydraulic cylinder 1102, and an upper clamping plate 1103; The clamping frame 1101 is slidably connected to the inner side of the stretching forming device body 1, the first hydraulic cylinder 1102 is arranged on one side of the top of the clamping frame 1101, the upper clamping plate 1103 is arranged at the bottom of the output end of the first hydraulic cylinder 1102, and rollers are arranged on the inner sides of the clamping frame 1101 and the upper clamping plate 1103.

[0032] By adopting the above solution, the roller design on the inner side of the clamping base 1101 and the upper clamping plate 1103 can maintain the smoothness of the inner film passing through.

[0033] like Figure 7 As shown, a fan 10 is provided at one end of the top of the clamping base 1101 , and the fan 10 is slidably connected to the surface of the stretch forming device body 1 , and the output end of the fan 10 is directly connected to the end of the second ventilation pipe 901 .

[0034] The above scheme is adopted: by providing a fan 10, when the operator starts the fan 10, the gas inside the second ventilation pipe 901 can be extracted through the output end, so that the ventilation valve flap 902 is driven to move to one side and open, and then the negative pressure acts smoothly with the adsorption component 8 to generate suction on the surfaces of the support roller 3 and the feeding roller 4. When the fan 10 is pushed as a whole so that the output end is opposite to the end of the second ventilation pipe 901 on the back of the feeding roller 4, the same effect as above is achieved.

[0035] like Figure 7 As shown, a second hydraulic cylinder 12 located on one side of the top of the clamping base 1101 is provided on one side of the surface of the stretching forming device body 1, and the output end of the second hydraulic cylinder 12 is fixedly connected to one side of the top of the clamping base 1101.

[0036] The above solution is adopted: by providing the second hydraulic cylinder 12, when the second hydraulic cylinder 12 is started, the output end can be extended and retracted, thereby driving the clamping assembly 11 and the fan 10 as a whole to move in position.

[0037] like Figure 8 As shown, a negative pressure assembly 13 is provided on one side of the inner part of the clamping base frame 1101, and the negative pressure assembly 13 includes an air cylinder 1301, a piston rod 1302, a connecting pipe 1303, an adsorption mesh plate 1304 and a second one-way valve flap 1305; The air cylinder 1301 is arranged on one side of the top of the clamping base frame 1101, the piston rod 1302 is movably installed inside the air cylinder 1301, the bottom end of the piston rod 1302 is fixedly connected to the top of the upper clamping plate 1103, the adsorption mesh plate 1304 is arranged on one side of the bottom of the upper clamping plate 1103, the top of the air cylinder 1301 is connected to the adsorption mesh plate 1304 through the connecting pipe 1303, and the second one-way valve flap 1305 is arranged on one side of the bottom end of the air cylinder 1301.

[0038] The above scheme is adopted: by providing a piston rod 1302, when the upper clamping plate 1103 moves downward as a whole, the piston rod 1302 will be driven downward, and the gap in the inner cavity at the top of the gas cylinder 1301 will become larger and generate negative pressure, until the top of the piston rod 1302 releases the blockage between the gas cylinder 1301 and the connecting pipe 1303, and the negative pressure will act on the adsorption mesh plate 1304 through the connecting pipe 1303.

[0039] like Figure 8 As shown, a plurality of holes are arranged inside the adsorption mesh plate 1304 .

[0040] By adopting the above solution, through the design of multiple holes inside the adsorption mesh plate 1304, negative pressure can be evenly passed through the holes to produce a comprehensive adsorption effect.

[0041] The working principle and use process of the present invention: First, when the laser scanning monitoring device 5 scans and detects that the thickness of the middle part of the PE film on the top of the conveying roller 2 and the feeding roller 4 begins to be uneven, the driving motor group 603 can be started to rotate the output end of the driving motor group 603, so that the double thread on the surface drives the movable frame 602 and the support roller 3 as a whole and the cutting blade 604 to move towards each other, and the middle part of the film can be supported upward by the support roller 3 as a whole, and the cutting blade 604 can cut off the middle part of the film downward, and then the fan 10 is started to make the suction force act on the inside of the second ventilation pipe 901, so that the ventilation valve flap 902 is driven to open, and the negative pressure will continue to act on the inside of the negative pressure pipe 801 through the first ventilation pipe 804 and the connecting ring 803, and then the first one-way valve flap 802 will flip open in one direction, and finally adsorb the uneven part of the film on the surface of the support roller 3, and then the support roller 3 is started to wind the film.

[0042] When the laser scanning monitoring device 5 detects that the thickness of the middle part of the film begins to be uniform, the cutting blade 604 can be started to cut the middle part downward again, and then the first hydraulic cylinder 1102 can be started to push the upper clamping plate 1103 downward as a whole to clamp the uniform part after cutting. As the upper clamping plate 1103 moves downward, the piston rod 1302 will move downward at the same time, and the gap at the top of the inner cavity of the air cylinder 1301 will become larger, and negative pressure will be generated until the piston rod 1302 reaches the bottom, so that the top of the piston rod 1302 releases the sealing effect between the air cylinder 1301 and the connecting pipe 1303, and finally the negative pressure adsorbs the disconnected part of the film through the connecting pipe 1303 and the adsorption mesh plate 1304.

[0043] Finally, the driving motor group 603 can be started to reset the movable frame 602 and the supporting roller 3 downward, and the cutting blade 604 is reset upward. Then, when the supporting roller 3 is reset to the bottom, the uneven film at the rear end will be cut off by the top of the cutter 14, so that the film can smoothly fall into the top of the waste frame 7. Then the second hydraulic cylinder 12 is started to drive the clamping base 1101 and the upper clamping plate 1103 as well as the film clamped therebetween to move toward the upper feeding roller 4, and the fan 10 will be driven to move so that the output end is aligned with the second ventilation pipe 901 on the back of the feeding roller 4. Finally, the fan 10 is started, and the first one-way valve flap 802 is flipped open through the second ventilation pipe 901, the first ventilation pipe 804, the connecting ring 803 and the negative pressure pipe 801, and the suction force can adsorb the film at the bottom of the adsorption mesh plate 1304, so that the film is wrapped on the surface of the feeding roller 4 and wound for feeding, thereby maintaining the continuity of feeding.

[0044] Note: When the surface of the feeding roller 4 is not feeding material, the film on the surface can be stretched completely to avoid the subsequent surface of the feeding roller 4 from throwing away the wrapped film, which will affect the subsequent adsorption of the disconnected film.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A PE film stretching and forming device, comprising a stretching and forming device body (1), characterized in that: Also includes: A conveying roller (2), wherein the conveying roller (2) is arranged on one side of the inner end of the stretch forming device body (1), A feeding roller (4), the feeding roller (4) being arranged at the inner end of the stretch forming device body (1), and the feeding roller (4) and the conveying roller (2) being symmetrical via a supporting roller (3); A laser scanning monitoring device (5), wherein the laser scanning monitoring device (5) is arranged on the top of the stretch forming device body (1), and the laser scanning monitoring device (5) is arranged directly above the support roller (3); A cutting mechanism (6), wherein the cutting mechanism (6) is arranged on one side of the surface of the stretch forming device body (1); An adsorption component (8), wherein the adsorption component (8) is arranged inside the support roller (3) and the feeding roller (4), and the top end of the adsorption component (8) is connected to the ventilation component (9); The adsorption assembly (8) comprises a negative pressure pipe (801) arranged inside the support roller (3) and the feeding roller (4), a first one-way valve flap (802) is arranged at the outer end of the inner cavity of the negative pressure pipe (801), a connecting ring (803) is movably sleeved on the end surface of the support roller (3) and the feeding roller (4), and a first ventilation pipe (804) is fixedly connected to the middle part of the top end of the connecting ring (803).

2. The PE film stretching and forming device according to claim 1, characterized in that: The cutting mechanism (6) comprises a movable groove (601), a movable frame (602), a driving motor group (603) and a cutting blade (604); The end of the support roller (3) is slidably connected to the inside of the movable groove (601), the movable frame (602) is arranged at the end of one side of the support roller (3), the drive motor group (603) is arranged on one side of the surface of the stretch forming device body (1), and the output end of the drive motor group (603) is threadedly sleeved with the movable frame (602), and the cutting blade (604) is threadedly sleeved on the top of the output end of the drive motor group (603).

3. The PE film stretching and forming device according to claim 2, characterized in that: The output end of the driving motor group (603) adopts a bidirectional threaded design.

4. The PE film stretching and forming device according to claim 1, characterized in that: A waste frame (7) located to the left of the support roller (3) is arranged inside the stretch forming device body (1), and a cutter (14) located below the support roller (3) is arranged at the inner end of the stretch forming device body (1).

5. The PE film stretching and forming device according to claim 1, characterized in that: The ventilation assembly (9) comprises a second ventilation pipe (901), a ventilation valve flap (902) and a connecting spring (903); The second ventilation pipe (901) is arranged inside the stretch forming device body (1), and the second ventilation pipe (901) is movably connected to the top end of the first ventilation pipe (804). The ventilation valve flap (902) is arranged at the end of the second ventilation pipe (901), and the ventilation valve flap (902) is elastically connected to the inside of the second ventilation pipe (901) via a connecting spring (903).

6. The PE film stretching and forming device according to claim 1, characterized in that: A clamping assembly (11) is provided on the inner side of the stretch forming device body (1) and is located at the top between the conveying roller (2) and the supporting roller (3). The clamping assembly (11) comprises a clamping base frame (1101), a first hydraulic cylinder (1102), and an upper clamping plate (1103); The clamping frame (1101) is slidably connected to the inner side of the stretch forming device body (1); the first hydraulic cylinder (1102) is arranged on one side of the top of the clamping frame (1101); the upper clamping plate (1103) is arranged at the bottom of the output end of the first hydraulic cylinder (1102); and rollers are arranged on the inner sides of the clamping frame (1101) and the upper clamping plate (1103).

7. The PE film stretching and forming device according to claim 6, characterized in that: A fan (10) is provided at one end of the top of the clamping base frame (1101); the fan (10) is slidably connected to the surface of the stretch forming device body (1); and the output end of the fan (10) is directly connected to the end of the second ventilation pipe (901).

8. The PE film stretching and forming device according to claim 1, characterized in that: A second hydraulic cylinder (12) located on one side of the top of the clamping base frame (1101) is provided on one side of the surface of the stretching forming device body (1), and an output end of the second hydraulic cylinder (12) is fixedly connected to one side of the top of the clamping base frame (1101).

9. The PE film stretching and forming device according to claim 6, characterized in that: A negative pressure assembly (13) is provided on one side inside the clamping base frame (1101), and the negative pressure assembly (13) comprises an air cylinder (1301), a piston rod (1302), a connecting pipe (1303), an adsorption mesh plate (1304), and a second one-way valve flap (1305); The gas cylinder (1301) is arranged on one side of the top of the clamping base (1101), the piston rod (1302) is movably installed inside the gas cylinder (1301), the bottom end of the piston rod (1302) is fixedly connected to the top of the upper clamping plate (1103), the adsorption mesh plate (1304) is arranged on one side of the bottom of the upper clamping plate (1103), the top of the gas cylinder (1301) is connected to the adsorption mesh plate (1304) through the connecting pipe (1303), and the second one-way valve flap (1305) is arranged on one side of the bottom end of the gas cylinder (1301).

10. The PE film stretching and forming device according to claim 9, characterized in that: The adsorption mesh plate (1304) is provided with a plurality of holes inside.

Images