A PE film stretching and forming device

Abstract

The present invention belongs to the technical field of PE film processing, and discloses a PE film stretching and forming device, including a stretching and forming device body, and further including: a conveying roller, the conveying roller is arranged on one side of the inner end of the stretching and forming device body, and a loading roller. Through the setting of a cutting mechanism, an adsorption component, a ventilation component and a fan, when the laser scanning monitoring device detects uneven thickness in the middle of the PE film on the top of the conveying roller and the loading roller, the cutting mechanism can be started to drive the overall upward movement of the supporting roller to support the middle of the PE film, and the cutting part at the top of the cutting mechanism will move downward to cut the middle of the PE film. Then, the fan can be started, and the ventilation component is used to inhale air into the adsorption component to generate negative pressure, so that suction force is generated on the surface of the supporting roller to adsorb the uneven thickness part of the PE film, and the supporting roller is started to rotate and wind, realizing the automatic cutting of the uneven thickness part and avoiding wrinkles during stretching.

Description

Technical Field

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

[0002] A PE film stretching and forming device is a special equipment for producing high-performance PE films. It conducts stretching treatment on the PE film through specific technological steps to improve its physical properties and appearance quality. The working principle mainly includes steps such as preheating, stretching, heat setting, and cooling: Preheating: The PE film is heated to the process temperature through a preheating roller group to make it soften and have good plasticity and stretchability; Stretching: The preheated PE film is longitudinally or transversely stretched by a 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 through a heat setting roller group to fix the oriented structure of the film and maintain the properties after stretching; Cooling: The cooling roller group cools the stretched and shaped PE film to room temperature to complete the entire stretching and forming process.

[0003] When the PE film is stretched, wrinkles will occur during the stretching process due to various factors. Commonly, it is caused by uneven thickness during the production of the base material. Furthermore, due to the uneven thickness, the forces at each stretching position are uneven, resulting in wrinkles. Currently, strict control is carried out during the production of the base material to make the error smaller, but there will still be some uneven thickness, which affects the subsequent stretching effect. Therefore, it needs to be improved. Summary of the Invention

[0004] To solve the problems raised in the above background art, 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 object, the present invention provides the following technical solution: A PE film stretching and forming device, including a stretching and forming device body, further including: a conveying roller, the conveying roller is arranged on one side of the inner end of the stretching and forming device body, a loading roller, the loading roller is arranged at the inner end of the stretching and forming device body, and the loading roller and the conveying roller are symmetrical relative to each other through a 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 loading roller, and the top end of the adsorption component is communicated with an air venting component; wherein, the adsorption component includes a negative pressure pipeline arranged inside the support roller and the loading roller, a first one-way valve flap is arranged at the outer end of the inner cavity of the negative pressure pipeline, a connecting collar is movably sleeved on the end surface of the support roller and the loading roller, and a first air pipe is fixedly communicated with the middle of the top end of the connecting collar:

[0006] The air venting component includes a second air pipe, an air vent valve flap and a connecting spring;

[0007] The second air pipe is arranged inside the stretching and forming device body, and the second air pipe is movably sleeved with the top end of the first air pipe. The air vent valve flap is arranged at the end of the second air pipe, and the air vent valve flap is elastically connected with the inside of the second air pipe through a connecting spring;

[0008] A clamping component is arranged on the inner side of the stretching and forming device body at the top between the conveying roller and the support roller. The clamping component includes a clamping bottom frame, a first hydraulic cylinder and an upper clamping plate;

[0009] The clamping bottom frame is slidably connected to the inner side of the stretching and forming device body. The first hydraulic cylinder is arranged on one side of the top of the clamping bottom frame. The upper clamping plate is arranged at the bottom of the output end of the first hydraulic cylinder. Rollers are arranged on the inner sides of the clamping bottom frame and the upper clamping plate;

[0010] One end of the top of the clamping bottom frame is provided with a blower, the blower is slidably connected to the surface of the stretching and forming device body, and the output end of the blower is directly opposite and communicated with the end of the second air pipe;

[0011] A second hydraulic cylinder is arranged on one side of the surface of the stretching and forming device body at the top of the clamping bottom frame. The output end of the second hydraulic cylinder is fixedly connected to one side of the top end of the clamping bottom frame;

[0012] A negative pressure component is arranged on one side inside the clamping bottom frame. The negative pressure component includes an air cylinder, a piston rod, a connecting pipe, an adsorption mesh plate and a second one-way valve flap;

[0013] The air cylinder is arranged on one side of the top of the clamping chassis. 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 communicated with the adsorption mesh plate through a connecting pipe. The second one-way valve flap is arranged on one side of the bottom end of the air cylinder;

[0014] A plurality of holes are arranged inside the adsorption mesh plate.

[0015] Preferably, the cutting mechanism includes a movable groove, a movable frame, a driving motor set and a cutting blade;

[0016] The end of the support roller is slidably connected to the inside of the movable groove. The movable frame is arranged at one end of the side of the support roller. The driving motor set is arranged on one side of the surface of the stretching and forming device body. And the output end of the driving motor set is threadedly sleeved with the movable frame. The cutting blade is threadedly sleeved on the top of the output end of the driving motor set.

[0017] Preferably, the output end of the driving motor set adopts a double-threaded design.

[0018] Preferably, a waste material box is arranged inside the stretching and forming device body and is located at the lower left of the support roller. A cutting knife is arranged at the inner end of the stretching and forming device body and is located below the support roller.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0020] Through the above technical solutions, by setting the cutting mechanism, the adsorption assembly, the ventilation assembly and the fan, when the laser scanning monitoring device detects uneven thickness in the middle of the PE film on the top of the conveying roller and the feeding roller, the cutting mechanism can be started to drive the overall upward movement of the support roller to support the middle of the PE film, and the cutting part at the top of the cutting mechanism will move downward to cut the middle of the PE film. Then, the fan can be started to inhale air through the ventilation assembly to the adsorption assembly to generate negative pressure, so that suction force is 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, realizing automatic cutting of the uneven thickness part and avoiding wrinkles during stretching.

[0021] By setting the clamping assembly and the negative pressure assembly in the present invention, when the uneven thickness part is cut off, the clamping assembly can be started to clamp the PE film on the side close to the conveying roller. Then, when the clamping is complete, the negative pressure suction force inside the negative pressure assembly will act on the disconnected part of the PE film for adsorption, so as to clamp the disconnected part of the PE film and facilitate subsequent smooth winding to the position of the feeding roller.

[0022] In the present invention, by providing a ventilation component, a fan, and a second hydraulic cylinder, when the cutting mechanism is driven to reset, the entire support roller will be synchronously reset downward. Then, the second hydraulic cylinder can be smoothly started, so that the output end of the second hydraulic cylinder drives the fan and the clamping component as a whole to move 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 suction is generated through the ventilation component and the adsorption component to generate negative pressure, thereby generating suction on the surface of the feeding roller to adsorb the part of the film at the position of the negative pressure component. Finally, the feeding roller can be started to continue winding the film at this position, maintaining the continuity of feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the present invention;

[0024] Figure 2 is a schematic structural diagram of the back of the present invention;

[0025] Figure 3 is a schematic partial structural diagram of the side of the present invention;

[0026] Figure 4 is a schematic sectional structural diagram of the cutting mechanism of the present invention;

[0027] Figure 5 is a schematic enlarged partial structural diagram at position A;

[0028] Figure 6 is a schematic enlarged partial structural diagram at position B;

[0029] Figure 7 is a schematic structural diagram of the clamping component of the present invention;

[0030] Figure 8 is a schematic sectional structural diagram of the negative pressure component of the present invention.

[0031] In the figure: 1. Body of the stretch forming device; 2. Conveyor roller; 3. Support roller; 4. Feeding roller; 5. Laser scanning monitoring device; 6. Cutting mechanism; 601. Activity groove; 602. Activity frame; 603. Driving motor group; 604. Cutting blade; 7. Scrap box; 8. Adsorption component; 801. Negative pressure pipeline; 802. First one-way valve flap; 803. Connecting collar; 804. First ventilation pipe; 9. Ventilation component; 901. Second ventilation pipe; 902. Ventilation valve flap; 903. Connecting spring; 10. Fan; 11. Clamping component; 1101. Clamping bottom frame; 1102. First hydraulic cylinder; 1103. Upper clamping plate; 12. Second hydraulic cylinder; 13. Negative pressure component; 1301. Air cylinder; 1302. Piston rod; 1303. Connecting pipe; 1304. Adsorption mesh plate; 1305. Second one-way valve flap; 14. Cutting knife. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] As Figures 1 to 8 shown, the present invention provides a PE film stretching and forming device, including a stretching and forming device body 1, and further including: 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 symmetrically arranged 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 directly above the supporting roller 3; a cutting mechanism 6, the cutting mechanism 6 is arranged on one side of the surface of the stretching and forming device body 1; an adsorption assembly 8, the adsorption assembly 8 is arranged inside the supporting roller 3 and the feeding roller 4, and the top end of the adsorption assembly 8 is communicated with a ventilation assembly 9; wherein, the adsorption assembly 8 includes a negative pressure pipeline 801 arranged inside the supporting 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 pipeline 801, a connecting collar 803 is movably sleeved on the end surface of the supporting roller 3 and the feeding roller 4, and a first ventilation pipe 804 is fixedly communicated with the middle of the top end of the connecting collar 803.

[0034] 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 starts to be uneven on the side close to the conveying roller 2, when the cutting mechanism 6 operates to drive the whole supporting roller 3 upward, so as to support the middle part of the PE film, and then the middle part of the film can be cut by the operation of the cutting mechanism 6. Then, by starting the fan 10, air can be sucked into the negative pressure pipeline 801 through the ventilation assembly 9, the first ventilation pipe 804, and the connecting collar 803, so that the first one-way valve flap 802 is turned over and opened unidirectionally, and the suction force on the surface of the supporting roller 3 adsorbs the uneven part of the film thickness on the top, so as to facilitate subsequent rotation and winding for collection;

[0035] The ventilation assembly 9 includes a second ventilation pipe 901, a ventilation valve flap 902, and a connecting spring 903;

[0036] The second ventilation pipe 901 is arranged inside the stretching and forming device body 1, and the second ventilation pipe 901 is movably sleeved with 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 through a connecting spring 903;

[0037] Adopt the above solution: By providing a connecting spring 903, the elastic force of the connecting spring 903 will push the ventilation valve flap 902 as a whole to move to one side, sealing the end of the second ventilation pipe 901;

[0038] Inside the stretching and forming device body 1, a clamping assembly 11 is provided at the top between the conveying roller 2 and the supporting roller 3. The clamping assembly 11 includes a clamping bottom frame 1101, a first hydraulic cylinder 1102, and an upper clamping plate 1103;

[0039] The clamping bottom frame 1101 is slidably connected to the inside of the stretching and forming device body 1. The first hydraulic cylinder 1102 is arranged on one side of the top of the clamping bottom frame 1101. The upper clamping plate 1103 is arranged at the bottom of the output end of the first hydraulic cylinder 1102. Rollers are arranged on the inner sides of the clamping bottom frame 1101 and the upper clamping plate 1103;

[0040] Adopt the above solution: Through the roller design on the inner sides of the clamping bottom frame 1101 and the upper clamping plate 1103, the smooth passage of the inner film can be maintained;

[0041] One end of the top of the clamping bottom frame 1101 is provided with a blower 10. The blower 10 is slidably connected to the surface of the stretching and forming device body 1. The output end of the blower 10 is directly connected and communicated with the end of the second ventilation pipe 901;

[0042] Adopt the above solution: By providing a blower 10, when the operator starts the blower 10, the gas inside the second ventilation pipe 901 can be pumped away through the output end, so that the ventilation valve flap 902 is driven to move to one side and open. Furthermore, the negative pressure can smoothly act on the adsorption assembly 8 to generate suction force on the surfaces of the supporting roller 3 and the feeding roller 4. When the blower 10 is pushed as a whole so that the output end is directly 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;

[0043] On one side of the surface of the stretching and forming device body 1, a second hydraulic cylinder 12 is provided on one side of the top of the clamping bottom frame 1101. The output end of the second hydraulic cylinder 12 is fixedly connected to one side of the top end of the clamping bottom frame 1101;

[0044] Adopt the above solution: By providing a second hydraulic cylinder 12, when the second hydraulic cylinder 12 is started, the output end can be telescoped, and then the whole clamping assembly 11 and the blower 10 will move in position;

[0045] On one side inside the clamping bottom frame 1101, a negative pressure assembly 13 is provided. The negative pressure assembly 13 includes a cylinder 1301, a piston rod 1302, a connecting pipe 1303, an adsorption mesh plate 1304, and a second one-way valve flap 1305;

[0046] The air pump 1301 is arranged on one side of the top of the clamping chassis 1101. The piston rod 1302 is movably installed inside the air pump 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 pump 1301 is communicated with the adsorption mesh plate 1304 through a connecting pipe 1303. The second one-way valve flap 1305 is arranged on one side of the bottom end of the air pump 1301.

[0047] With the above scheme: By providing the piston rod 1302, when the whole of the upper clamping plate 1103 moves downward, the piston rod 1302 will be driven downward, and the gap in the inner cavity at the top of the air pump 1301 will become larger and generate negative pressure. Until the top of the piston rod 1302 releases the blockage between the air pump 1301 and the connecting pipe 1303, the negative pressure will act on the adsorption mesh plate 1304 through the connecting pipe 1303.

[0048] Multiple holes are provided inside the adsorption mesh plate 1304.

[0049] With the above scheme: Through the design of multiple holes inside the adsorption mesh plate 1304, the negative pressure can evenly pass through the holes to generate a comprehensive adsorption effect.

[0050] As Figure 4 shown, the cutting mechanism 6 includes a movable groove 601, a movable frame 602, a drive motor set 603 and a cutting blade 604;

[0051] 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 one end of the support roller 3. The drive motor set 603 is arranged on one side of the surface of the stretch forming device body 1, and the output end of the drive motor set 603 is threadedly sleeved with the movable frame 602. The cutting blade 604 is threadedly sleeved on the top of the output end of the drive motor set 603.

[0052] With the above scheme: Through the sliding connection relationship between the inside of the movable groove 601 and the end of the support roller 3, the overall up and down movement of the support roller 3 can be limited.

[0053] As Figure 4 shown, the output end of the drive motor set 603 adopts a double-threaded design.

[0054] With the above scheme: Through the double-threaded design of the output end of the drive motor set 603, the movable frame 602 and the cutting blade 604 can be driven to move towards or away from each other.

[0055] As Figure 3 shown, a waste bin 7 is arranged inside the stretch forming device body 1 and is located at the lower left of the support roller 3. A cutting knife 14 is arranged at the inner end of the stretch forming device body 1 and is located below the support roller 3.

[0056] Adopting the above solution: by providing a cutting knife 14, when the support roller 3 drives the film with uneven thickness to move downward, the top of the cutting knife 14 will cut the film, and finally the film will fall into the waste bin 7 for collection.

[0057] The working principle and usage process of the present invention:

[0058] First, when the laser scanning monitoring device 5 scans and detects that the middle part of the PE film on the top of the conveying roller 2 and the feeding roller 4 starts to have uneven thickness, the driving motor group 603 can be started, so that the output end of the driving motor group 603 rotates, and then the surface double-thread drives the movable frame 602, the support roller 3 as a whole and the cutting blade 604 to move towards each other. The middle part of the film can be supported by the support roller 3 moving upward as a whole, and the middle part of the film can be cut by the cutting blade 604 moving downward. Then, the fan 10 is started, so that the suction force acts inside the second air 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 air pipe 804 and the connecting collar 803. Then, the first one-way valve flap 802 will be turned over and opened unidirectionally, and finally the uneven part of the film on the surface of the support roller 3 is adsorbed, and then the support roller 3 is started to wind the film.

[0059] When the laser scanning monitoring device 5 detects that the middle part of the film starts to have uniform thickness, the cutting blade 604 can be started to cut downward again in the middle, and then the first hydraulic cylinder 1102 can be started to push the upper clamping plate 1103 as a whole downward to clamp the uniform part after cutting. Since 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 bottommost position, so that the seal between the top of the piston rod 1302 and the air cylinder 1301 and the connecting pipe 1303 is released, and finally the negative pressure adsorbs the disconnected part of the film through the connecting pipe 1303 and the adsorption mesh plate 1304.

[0060] Finally, the drive motor set 603 can be activated to cause the movable frame 602 and the support roller 3 to reset downward, while the cutting blade 604 resets upward. Then, when the support roller 3 resets to the bottommost position, the uneven thin film at the rear end will be cut off by the top of the cutter 14, causing the thin film to smoothly fall onto the top of the waste bin 7. Then, the second hydraulic cylinder 12 is activated to drive the clamping chassis 1101, the upper clamping plate 1103, and the thin film clamped therebetween to move closer to the loading roller 4, and the blower 10 will be driven, so that the output end is aligned with the second ventilation pipe 901 on the back of the loading roller 4. Finally, the blower 10 is started, and through the second ventilation pipe 901, the first ventilation pipe 804, the connecting collar 803, and the negative pressure pipe 801, the first one-way valve flap 802 is flipped open, and the suction force can adsorb the thin film at the bottom of the adsorption mesh plate 1304, causing the thin film to be wrapped around the surface of the loading roller 4 for winding and loading, maintaining the continuity of feeding.

[0061] Note: When there is no feeding on the surface of the loading roller 4, all the thin film on the surface can be stretched out to avoid the subsequent wrapping of the thin film on the surface of the loading roller 4, which may affect the subsequent adsorption of the disconnected thin film.

[0062] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0063] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. 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: It further includes: A conveying roller (2), which is arranged on one side of the inner end of the body (1) of the stretching and forming device. A loading roller (4), which is arranged at the inner end of the body (1) of the stretching and forming device, and the loading roller (4) and the conveying roller (2) are symmetric with each other through a supporting roller (3). A laser scanning monitoring device (5), which is arranged on the top of the body (1) of the stretching and forming device, and the laser scanning monitoring device (5) is arranged directly above the supporting roller (3). A cutting mechanism (6), which is arranged on one side of the surface of the body (1) of the stretching and forming device. An adsorption assembly (8), which is arranged inside the supporting roller (3) and the loading roller (4), and the top end of the adsorption assembly (8) is communicated with an air venting assembly (9). Among them, the adsorption assembly (8) includes a negative pressure pipeline (801) arranged inside the supporting roller (3) and the loading roller (4), a first one-way valve flap (802) is arranged at the outer end of the inner cavity of the negative pressure pipeline (801), a connecting collar (803) is movably sleeved on the end surfaces of the supporting roller (3) and the loading roller (4), and a first ventilation pipe (804) is fixedly communicated with the middle of the top end of the connecting collar (803). The air venting 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 body (1) of the stretching and forming device, and the second ventilation pipe (901) is movably sleeved on 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 with the inside of the second ventilation pipe (901) through a connecting spring (903). A clamping assembly (11) is arranged on the inner side of the body (1) of the stretching and forming device at the top between the conveying roller (2) and the supporting roller (3), and the clamping assembly (11) includes a clamping bottom frame (1101), a first hydraulic cylinder (1102) and an upper clamping plate (1103). The clamping bottom frame (1101) is slidably connected to the inner side of the body (1) of the stretching and forming device, the first hydraulic cylinder (1102) is arranged on one side of the top of the clamping bottom 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 bottom frame (1101) and the upper clamping plate (1103). A blower (10) is arranged at one end of the top of the clamping bottom frame (1101), the blower (10) is slidably connected to the surface of the body (1) of the stretching and forming device, and the output end of the blower (10) is directly communicated with the end of the second ventilation pipe (901). A second hydraulic cylinder (12) is arranged on one side of the surface of the body (1) of the stretching and forming device at the top of one side of the clamping bottom frame (1101), and the output end of the second hydraulic cylinder (12) is fixedly connected to one side of the top end of the clamping bottom frame (1101). One side inside the clamping chassis (1101) is provided with a negative pressure assembly (13), 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 chassis (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 communicated with 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): A plurality of holes are arranged inside the adsorption mesh plate (1304).

2. The PE film stretching and forming device according to claim 1, wherein: The cutting mechanism (6) includes a movable groove (601), a movable frame (602), a driving motor set (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 driving motor set (603) is arranged on one side of the surface of the stretch forming device body (1), and the output end of the driving motor set (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 driving motor set (603).

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

4. The PE film stretching and forming device according to claim 1, wherein: A waste material box (7) is arranged inside the stretch forming device body (1) and located at the lower left of the support roller (3), and a cutting knife (14) is arranged at the inner end of the stretch forming device body (1) and located below the support roller (3).

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