Multi-layer co-extrusion cast film production line

Abstract

The invention relates to the field of cast films, and particularly discloses a multi-layer co-extrusion cast film production line which comprises a supporting table, an extruder for extruding a cast film is arranged on the supporting table, an air knife is arranged on the supporting table, and a cooling roller, a finishing roller and a winding roller are sequentially arranged on the supporting table; a supporting frame is arranged on the supporting table, and a driving mechanism is arranged on the supporting frame. When the cast film is normally conveyed, the wrinkle removing effect on the cast film can be achieved, the wrinkle phenomenon of the cast film is reduced, and when the cast film is abnormally conveyed, namely when the deviation phenomenon occurs, the deviation action force of the cast film is used for adjusting the deviation rectifying assembly, the deviation rectifying assembly is forced to make close contact with the cast film, and the deviation rectifying effect is improved. Therefore, the deviation rectifying effect of the casting film is achieved, the phenomenon that the casting film is wrinkled or scratched is further reduced, a production line does not need to be handled in a shutdown mode, the product quality is improved, equipment protection is facilitated, the production efficiency is improved, the overall productivity is improved, and production of the casting film is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of cold fans, and particularly to a multi-layer coextrusion cast film production line. Background Art

[0002] A cast film is a film manufactured through a casting process. The film production process generally involves uniformly coating a molten plastic material on a cooling roller and then forming the film through cooling and solidification. The extrusion process of a cast film generally includes steps such as material preparation, melt extrusion, cooling and shaping, traction cutting, and winding and inspection. A multi-layer coextrusion cast film is formed by using multiple extrusion devices to extrude melts during melt extrusion, so that the melts converge in the casting head to form a multi-layer structure.

[0003] In the existing patent CN118682961A, a film casting machine is disclosed, which includes a workbench. A plastic film forming device is arranged on the upper part of the workbench. The plastic film forming device includes a first base, and the first base is fixedly connected to the top of the workbench. By moving two flattening plates, the processing difficulty and defect rate of subsequent plastic film gloves caused by wrinkles can be reduced, the stability and continuity of the production line can be improved, the production cost of the enterprise can be reduced, and the economic benefit can be improved. At the same time, the two reciprocating flattening mechanisms are always on the same inclined plane, so that the reciprocating flattening mechanism can be quickly adjusted when adjusting the thickness of the plastic film, thereby reducing the downtime and improving the overall production efficiency. Secondly, when the first contact point abuts against the second contact point, the machine stops working through the controller at this time, so that these unqualified products can be prevented from continuing to be produced, further reducing the scrap rate of the products and thus reducing the production cost.

[0004] In the above structure, the adjustment of the film thickness can be achieved. However, during the production process of the cast film, the cast film will deviate. At this time, the equipment needs to be stopped, wasting a lot of time. The deviation correction function of the cast film cannot be realized, which easily causes wrinkles or scratches on the product. The production line needs to be stopped for processing, affecting the quality of the product, causing waste of materials, and serious deviation is likely to cause equipment damage, thus reducing the production efficiency and resulting in a decline in the overall production capacity, which is not conducive to the production of cast films.

[0005] Therefore, how to provide a multi-layer coextrusion cast film production line is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] An object of the present invention is to provide a multi-layer co-extrusion cast film production line. The multi-layer co-extrusion cast film production line of the present invention includes a support table, an extruder for extruding a cast film is provided on the support table, an air knife is provided on the support table, a cooling roller, a finishing roller and a winding roller are sequentially provided on the support table; a support frame is provided on the support table, a driving mechanism is provided on the support frame, a reciprocating assembly connected to the driving mechanism is provided on the support frame, a swing assembly connected to the reciprocating assembly is provided on the support frame, an adjusting assembly is provided on the swing assembly, a deviation rectifying assembly is provided at the output end of the adjusting assembly, an actuating assembly is provided on the support frame, pre-pressure bearing assemblies are provided on both sides of the actuating assembly, a driven assembly is provided on the actuating assembly, and a transmission assembly is provided between the adjusting assembly and the driven assembly; wherein, during wrinkle removal, the driving mechanism drives the deviation rectifying assembly to move through the reciprocating assembly, the swing assembly and the adjusting assembly, forcing the deviation rectifying assembly to continuously perform wrinkle removal treatment on the cast film; during deviation rectification, the actuating assembly drives the adjusting assembly to adjust the movement of the deviation rectifying assembly through the driven assembly and the transmission assembly, forcing the deviation rectifying assembly to perform deviation rectification treatment on the cast film.

[0007] Preferably, the swing assembly includes a support rod provided on the support frame, a sector gear is connected to the support rod by a bearing, a swing rod is connected to the support frame by a bearing, and a swing gear meshing with the sector gear is provided on the swing rod.

[0008] Preferably, the reciprocating assembly includes a rotating rod connected to the support frame by a bearing, a rotating disk is provided on the rotating rod, a connecting rod is hinged at a position deviating from the center of the rotating disk, and the end of the connecting rod is hinged at a position deviating from the center of the sector gear.

[0009] Preferably, the driving mechanism includes a driving motor provided on the support frame, the output shaft of the driving motor is connected with a driving bevel gear, and a driven bevel gear meshing with the driving bevel gear is fixedly sleeved on the rotating rod.

[0010] Preferably, the adjusting assembly includes a swing block provided on the swing rod, a threaded rod is connected to the swing block by a bearing, adjusting blocks penetrating through the swing block are threadedly connected to both ends of the threaded rod, the two ends of the threaded rod are provided with opposite thread structures, and the threaded rod respectively threadedly penetrates through the two adjusting blocks.

[0011] Preferably, the deviation rectifying assembly includes a connecting block provided on the adjusting block, a deviation rectifying rod is connected to the connecting block by a bearing, and a deviation rectifying roller is fixedly sleeved on the deviation rectifying rod.

[0012] Preferably, the immediate movement component includes a fixed frame disposed on the support frame. A shaft rod is connected to the fixed frame by a bearing. An immediate movement block in a U shape is disposed on the shaft rod. A spring is disposed between the immediate movement block and the fixed frame.

[0013] Preferably, the pre-pressure-bearing component includes an electric push rod disposed on the fixed frame. A pre-pressure-bearing block in a U shape is disposed at the output end of the electric push rod. The pre-pressure-bearing block is located in front of the immediate movement block.

[0014] Preferably, the driven component includes a driven straight rack slidably disposed on the fixed frame. A driven gear engaged with the driven straight rack is fixedly sleeved on the shaft rod.

[0015] Preferably, the transmission component includes a connecting rod connected to the driven straight rack. An installation rod is disposed on the connecting rod. A first transmission straight rack and a second transmission straight rack are disposed on the installation rod. A transmission gear is fixedly sleeved on the threaded rod. The transmission gear is respectively engaged with the first transmission straight rack and the second transmission straight rack.

[0016] The beneficial effects of the present invention are as follows:

[0017] When the present invention extrudes a multi-layer cast film, various raw materials are respectively placed at the feed inlet of the extruder. The extruder extrudes the cast film, and under the action of an air knife, the cast film is continuously blown onto the cooling roller. Under the driving action of the driving source, the cooling roller is forced to continuously convey the cast film. The cast film is conveyed to the winding roller through the action of the finishing roller, and the winding roller continuously winds the cast film; during the process of winding the cast film, when an abnormal phenomenon occurs in the cast film, it is necessary to process the cast film. When removing wrinkles, the driving mechanism is started, forcing the driving mechanism to drive the reciprocating assembly to reciprocate. The reciprocating assembly drives the swinging assembly to swing, forcing the swinging assembly to drive the adjusting assembly to swing, and forcing the swinging assembly to drive the deviation rectifying assembly to swing. Due to the gap in the deviation rectifying assembly and in cooperation with the conveying equipment, the deviation rectifying assembly contacts the upper and lower surfaces of the cast film simultaneously, forcing the deviation rectifying assembly to level the upper and lower surfaces of the cast film, thereby achieving the purpose of removing wrinkles from the cast film; when the cast film deviates, the pre-pressure bearing assembly first blocks the deviated cast film and records and detects the deviation acting force of the cast film. According to the pressure conditions on both sides, the driving mechanism is started, forcing the driving mechanism to drive the reciprocating assembly and the swinging assembly to move to a reasonable position, forcing the adjusting assembly and the deviation rectifying assembly to move to one side, and the pre-pressure bearing assembly retreats. The acting force of the cast film forces the actuating assembly to move, forcing the driven assembly and the transmission assembly to move, and the transmission assembly drives the adjusting assembly to move. The adjusting assembly adjusts the deviation rectifying assembly to act, forcing the deviation rectifying assembly to approach each other until the deviation rectifying assembly is in close contact with the cast film. The driving mechanism is started, and under the action of the reciprocating assembly, the swinging assembly and the adjusting assembly, the deviation rectifying assembly is forced to move from one side to the middle position, forcing the deviation rectifying assembly to pull the cast film, so that the cast film moves from the outer deviation to the inner side. The cast film is adjusted to the normal track through the tensioning equipment. When the cast film is restored, no acting force is generated on the actuating assembly, and the actuating assembly drives the driven assembly and the transmission assembly to return to the original position, forcing the pre-pressure bearing assembly to return to the original position, completing a deviation rectifying action; in summary, for the multi-layer co-extrusion cast film production line of the present application, when the cast film is normally conveyed, the effect of removing wrinkles from the cast film can be achieved, reducing the possibility of the cast film having wrinkles. When the cast film is abnormally conveyed, that is, when a deviation occurs, by using the deviation acting force of the cast film, the adjustment of the deviation rectifying assembly is realized, forcing the deviation rectifying assembly to be in close contact with the cast film, thereby achieving the deviation rectifying effect on the cast film, further reducing the possibility of the cast film having wrinkles or scratches, without stopping the production line for processing, improving the quality of the product, being beneficial to protecting the equipment, thereby improving the production efficiency, increasing the overall production capacity, and being beneficial to the production of the cast film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1Stereoscopic structure entity diagram of the present invention;

[0020] Figure 2 Front view of the present invention;

[0021] Figure 3 Partial structure entity diagram of the present invention;

[0022] Figure 4 Structure entity diagram of the driving mechanism of the present invention;

[0023] Figure 5 Structure entity diagram of the reciprocating component of the present invention;

[0024] Figure 6 Structure entity diagram of the adjusting component and the deviation rectifying component of the present invention;

[0025] Figure 7 Structure entity diagram of the actuating component of the present invention;

[0026] Figure 8 Structure entity diagram of the pre-pressure bearing component of the present invention;

[0027] Figure 9 Structure entity diagram of the driven component of the present invention;

[0028] Figure 10 Structure entity diagram of the transmission component of the present invention.

[0029] In the figure: 1, support table; 2, extruder; 3, air knife; 4, cooling roller; 5, finishing roller; 6, winding roller; 7, support frame; 8, driving mechanism; 801, driving motor; 802, driving bevel gear; 803, driven bevel gear; 9, reciprocating component; 901, rotating rod; 902, rotating disc; 903, connecting rod; 10, swinging component; 1001, support rod; 1002, sector gear; 1003, swinging rod; 1004, swinging gear; 11, adjusting component; 1101, swinging block; 1102, threaded rod; 1103, adjusting block; 12, deviation rectifying component; 1201, connecting block; 1202, deviation rectifying rod; 1203, deviation rectifying roller; 13, actuating component; 1301, fixing frame; 1302, shaft rod; 1303, actuating block; 1304, spring; 14, pre-pressure bearing component; 1401, electric push rod; 1402, pre-pressure bearing block; 15, driven component; 1501, driven straight rack; 1502, driven gear; 16, transmission component; 1601, connecting rod; 1602, mounting rod; 1603, transmission straight rack one; 1604, transmission straight rack two; 1605, transmission gear. Detailed implementation manners

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0031] Embodiment 1:

[0032] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 shown, the multi-layer co-extrusion cast film production line of the present invention includes a support table 1, an extruder 2 for extruding and casting the film is provided on the support table 1, an air knife 3 is provided on the support table 1, a cooling roller 4, a finishing roller 5 and a winding roller 6 are sequentially provided on the support table 1; a support frame 7 is provided on the support table 1, a driving mechanism 8 is provided on the support frame 7, a reciprocating assembly 9 connected to the driving mechanism 8 is provided on the support frame 7, a swinging assembly 10 connected to the reciprocating assembly 9 is provided on the support frame 7, an adjusting assembly 11 is provided on the swinging assembly 10, a deviation rectifying assembly 12 is provided at the output end of the adjusting assembly 11, an actuating assembly 13 is provided on the support frame 7, pre-pressure bearing assemblies 14 are provided on both sides of the actuating assembly 13, a driven assembly 15 is provided on the actuating assembly 13, and a transmission assembly 16 is provided between the adjusting assembly 11 and the driven assembly 15; wherein, during wrinkle removal, the driving mechanism 8 drives the deviation rectifying assembly 12 to move through the reciprocating assembly 9, the swinging assembly 10 and the adjusting assembly 11, forcing the deviation rectifying assembly 12 to continuously perform wrinkle removal treatment on the cast film; during deviation rectification, the actuating assembly 13 drives the adjusting assembly 11 to adjust the movement of the deviation rectifying assembly 12 through the driven assembly 15 and the transmission assembly 16, forcing the deviation rectifying assembly 12 to perform deviation rectification treatment on the cast film.

[0033] Working principle: When extruding a multi-layer cast film, various raw materials are respectively put into the feed port of the extruder 2. The extruder 2 extrudes the cast film. Under the action of the air knife 3, the cast film is continuously blown onto the cooling roller 4. Under the driving action of the driving source, the cooling roller 4 is forced to continuously convey the cast film. The cast film is conveyed to the winding roller 6 through the action of the finishing roller 5, and the winding roller 6 continuously winds the cast film. During the process of winding the cast film, when abnormal phenomena occur in the cast film, it is necessary to process the cast film. When removing wrinkles, the driving mechanism 8 is started, forcing the driving mechanism 8 to drive the reciprocating component 9 to move reciprocally. The reciprocating component 9 drives the swinging component 10 to swing, forcing the swinging component 10 to drive the adjusting component 11 to swing, and forcing the swinging component 10 to drive the deviation rectifying component 12 to swing. Due to the gap existing in the deviation rectifying component 12 and in cooperation with the conveying equipment, the deviation rectifying component 12 contacts the upper and lower surfaces of the cast film simultaneously, forcing the deviation rectifying component 12 to level the upper and lower surfaces of the cast film, thereby achieving the purpose of removing wrinkles from the cast film. When the cast film deviates, the pre-pressure bearing component 14 first blocks the deviated cast film and records and detects the deviation acting force of the cast film. According to the pressure conditions on both sides, the driving mechanism 8 is started, forcing the driving mechanism 8 to drive the reciprocating component 9 and the swinging component 10 to move to a reasonable position, forcing the adjusting component 11 and the deviation rectifying component 12 to move to one side, and the pre-pressure bearing component 14 retracts. The acting force of the cast film forces the actuating component 13 to move, forcing the driven component 15 and the transmission component 16 to move. The transmission component 16 drives the adjusting component 11 to move, and the adjusting component 11 adjusts the deviation rectifying component 12 to act, forcing the deviation rectifying component 12 to approach each other until the deviation rectifying component 12 is in close contact with the cast film. The driving mechanism 8 is started. Under the action of the reciprocating component 9, the swinging component 10 and the adjusting component 11, the deviation rectifying component 12 is forced to move from one side to the middle position, and the deviation rectifying component 12 is forced to pull the cast film, so that the cast film moves from the outer deviation position to the inner side. The cast film is adjusted to the normal track through the tensioning equipment. When the cast film is restored, no acting force is generated on the actuating component 13, and the actuating component 13 drives the driven component 15 and the transmission component 16 to return to the original position, forcing the pre-pressure bearing component 14 to return to the original position, completing a deviation rectifying action. In summary, for the multi-layer co-extrusion cast film production line of the present application, when the cast film is normally conveyed, the effect of removing wrinkles from the cast film can be achieved, reducing the possibility of the cast film having wrinkling phenomena. When the cast film has abnormal conveyance, that is, when deviation occurs, by using the deviation acting force of the cast film, the adjustment of the deviation rectifying component 12 is realized, forcing the deviation rectifying component 12 to be in close contact with the cast film, thereby achieving the deviation rectifying effect on the cast film, further reducing the possibility of the cast film having wrinkles or scratches, without the need to stop the production line for processing, improving the product quality, being beneficial to protecting the equipment, thereby improving the production efficiency, increasing the overall production capacity, and being beneficial to the production of the cast film.

[0034] Embodiment 2:

[0035] Such asFigure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown in Figure 10 , in the multi-layer co-extrusion cast film production line of the present invention, the swing assembly 10 includes a support rod 1001 arranged on the support frame 7. A sector gear 1002 is connected to the support rod 1001 by a bearing. A swing rod 1003 is connected to the support frame 7 by a bearing. A swing gear 1004 meshing with the sector gear 1002 is arranged on the swing rod 1003.

[0036] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown in Figure 10 , in the multi-layer co-extrusion cast film production line of the present invention, the reciprocating assembly 9 includes a rotating rod 901 connected to the support frame 7 by a bearing. A rotating disk 902 is arranged on the rotating rod 901. A connecting rod 903 is hinged at a position deviating from the center of the rotating disk 902. The end of the connecting rod 903 is hinged at a position deviating from the center of the sector gear 1002.

[0037] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown in Figure 10 , in the multi-layer co-extrusion cast film production line of the present invention, the driving mechanism 8 includes a driving motor 801 arranged on the support frame 7. The output shaft of the driving motor 801 is connected with a driving bevel gear 802. A driven bevel gear 803 meshing with the driving bevel gear 802 is fixedly sleeved on the rotating rod 901.

[0038] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, for the multi-layer co-extrusion cast film production line of the present invention, the adjusting assembly 11 includes a swinging block 1101 provided on the swinging rod 1003. A threaded rod 1102 is connected to the swinging block 1101 by a bearing. Both ends of the threaded rod 1102 are threadedly connected with adjusting blocks 1103 that penetrate through the swinging block 1101. The two ends of the threaded rod 1102 are provided with opposite thread structures, and the threaded rod 1102 threadedly penetrates through the two adjusting blocks 1103 respectively.

[0039] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, for the multi-layer co-extrusion cast film production line of the present invention, the deviation rectifying assembly 12 includes a connecting block 1201 provided on the adjusting block 1103. A deviation rectifying rod 1202 is connected to the connecting block 1201 by a bearing. A deviation rectifying roller 1203 is fixedly sleeved on the deviation rectifying rod 1202.

[0040] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, for the multi-layer co-extrusion cast film production line of the present invention, the actuating assembly 13 includes a fixed frame 1301 provided on the support frame 7. A shaft rod 1302 is connected to the fixed frame 1301 by a bearing. A U-shaped actuating block 1303 is provided on the shaft rod 1302. A spring 1304 is provided between the actuating block 1303 and the fixed frame 1301.

[0041] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown, for the multi-layer co-extrusion cast film production line of the present invention, the pre-pressure bearing assembly 14 includes an electric push rod 1401 provided on the fixed frame 1301. A U-shaped pre-pressure bearing block 1402 is provided at the output end of the electric push rod 1401. The pre-pressure bearing block 1402 is located in front of the actuating block 1303. Pressure sensing sheets electrically connected to the control system are installed on the pre-pressure bearing block 1402.

[0042] AsFigure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown in Figure 9 and Figure 10 , for the multi-layer co-extrusion cast film production line of the present invention, the driven component 15 includes a driven straight rack 1501 slidably arranged on a fixed frame 1301, and a driven gear 1502 fixedly sleeved on a shaft rod 1302 and meshing with the driven straight rack 1501.

[0043] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 As shown in Figure 8 and Figure 9 , for the multi-layer co-extrusion cast film production line of the present invention, the transmission component 16 includes a connecting rod 1601 connected to the driven straight rack 1501. An installation rod 1602 is arranged on the connecting rod 1601. A first transmission straight rack 1603 and a second transmission straight rack 1604 are arranged on the installation rod 1602. A transmission gear 1605 is fixedly sleeved on a threaded rod 1102, and the transmission gear 1605 meshes with the first transmission straight rack 1603 and the second transmission straight rack 1604 respectively.

[0044] Working principle: When extruding a multi-layer cast film, various raw materials are respectively put into the feed inlet of an extruder 2. The extruder 2 extrudes the cast film. Under the action of an air knife 3, the cast film is continuously blown onto a cooling roller 4. Under the driving action of a driving source, the cooling roller 4 is forced to continuously convey the cast film. The cast film is conveyed to a winding roller 6 through the action of a finishing roller 5, and the winding roller 6 continuously winds up the cast film;

[0045] During the process of winding the cast film, when abnormal phenomena occur in the cast film, the cast film needs to be processed. When removing wrinkles, the drive motor 801 is started. The output shaft of the drive motor 801 rotates to drive the driving bevel gear 802 to rotate. The driving bevel gear 802 rotates to drive the driven bevel gear 803 to rotate. The driven bevel gear 803 rotates to drive the rotating rod 901 to rotate. The rotating rod 901 drives the rotating disk 902 to rotate. The rotating disk 902 rotates to drive the connecting rod 903 to move, forcing the connecting rod 903 to perform a reciprocating motion, forcing the connecting rod 903 to drive the sector gear 1002 to perform a periodic swing, forcing the oscillating gear 1004 to swing, causing the swing rod 1003 to swing, so that the swing rod 1003 drives the swing block 1101, the threaded rod 1102 and the adjusting block 1103 to swing, forcing the connecting rod 1601, the deviation rectifying rod 1202 and the deviation rectifying roller 1203 to perform a periodic arc-shaped trajectory swing. Since there is a gap between the upper and lower deviation rectifying rollers 1203, in cooperation with the conveying device, the deviation rectifying rollers 1203 contact the upper and lower surfaces of the cast film at the same time, forcing the deviation rectifying rollers 1203 to level the upper and lower surfaces of the cast film, thus achieving the purpose of removing wrinkles from the cast film;

[0046] When the cast film deviates, since the pre-pressure bearing block 1402 is located in front of the actuating block 1303, the pre-pressure bearing block 1402 first contacts the deviated cast film, causing the pre-pressure bearing block 1402 to block the cast film. Moreover, the pressure sensing sheet on the pre-pressure bearing block 1402 records and detects the deviation force of the cast film. According to the pressure conditions on both sides, the output of the drive motor 801 is changed;

[0047] When the pressure borne by the pre-pressure bearing block 1402 on one side is relatively large, the drive motor 801 is started. The output shaft of the drive motor 801 rotates to drive the driving bevel gear 802 to rotate. The driving bevel gear 802 rotates to drive the driven bevel gear 803 to rotate. The driven bevel gear 803 rotates to drive the rotating rod 901 to rotate. The rotating rod 901 drives the rotating disk 902 to rotate. The rotating disk 902 rotates to drive the connecting rod 903 to move, forcing the connecting rod 903 to move, forcing the connecting rod 903 to drive the sector gear 1002 to swing, forcing the oscillating gear 1004 to swing, causing the swing rod 1003 to swing, so that the swing rod 1003 drives the swing block 1101, the threaded rod 1102 and the adjusting block 1103 to swing, forcing the connecting rod 1601, the deviation rectifying rod 1202 and the deviation rectifying roller 1203 to swing until the deviation rectifying roller 1203 moves to one side, and then the drive motor 801 is stopped;

[0048] Start the electric push rod 1401. The output end of the electric push rod 1401 drives the pre-pressure bearing block 1402 to move backward, causing the casting film to disengage from the pre-pressure bearing block 1402. At this time, the edge of the casting film contacts the actuating block 1303. Due to the deviation force generated by the casting film, the casting film is forced to drive the actuating block 1303 to rotate around the shaft rod 1302. One spring 1304 is compressed and the other spring 1304 is stretched. The rotation of the shaft rod 1302 drives the driven gear 1502 to rotate. The rotation of the driven gear 1502 drives the driven straight rack 1501 to move. The movement of the driven straight rack 1501 drives the connecting rod 1601 and the mounting rod 1602 to move, causing the driving straight rack one 1603 and the driving straight rack two 1604 to move. No action occurs between the driving straight rack two 1604 and the driving gear 1605. The movement of the driving straight rack one 1603 drives the driving gear 1605 to rotate. The rotation of the driving gear 1605 drives the threaded rod 1102 to rotate. Under the guiding action of the swing block 1101, the threaded rod 1102 is forced to rotate to drive the adjusting blocks 1103 to move closer to each other, so that the adjusting blocks 1103 drive the connecting block 1201, the deviation rectifying rod 1202 and the deviation rectifying roller 1203 to move closer to each other. When the two deviation rectifying rollers 1203 are in close contact with the casting film, the driving straight rack one 1603 just moves excessively and separates from the driving gear 1605;

[0049] Similarly, when the pressure borne by the pre-pressure bearing block 1402 on the other side is relatively large, the shaft rod 1302 rotates in the reverse direction to drive the driven gear 1502 to rotate in the reverse direction. The rotation of the driven gear 1502 drives the driven straight rack 1501 to move in the reverse direction. The movement of the driven straight rack 1501 drives the connecting rod 1601 and the mounting rod 1602 to move, causing the driving straight rack one 1603 and the driving straight rack two 1604 to move. No action occurs between the driving straight rack one 1603 and the driving gear 1605. The movement of the driving straight rack two 1604 drives the driving gear 1605 to rotate. The rotation of the driving gear 1605 drives the threaded rod 1102 to rotate in the same direction. Under the guiding action of the swing block 1101, the threaded rod 1102 is forced to rotate to drive the adjusting blocks 1103 to still move closer to each other, so that the adjusting blocks 1103 drive the connecting block 1201, the deviation rectifying rod 1202 and the deviation rectifying roller 1203 to still move closer to each other. When the two deviation rectifying rollers 1203 are in close contact with the casting film, the driving straight rack two 1604 just moves excessively and separates from the driving gear 1605;

[0050] Start the drive motor 801. The rotation of the output shaft of the drive motor 801 drives the rotation of the driving bevel gear 802. The rotation of the driving bevel gear 802 drives the rotation of the driven bevel gear 803. The rotation of the driven bevel gear 803 drives the rotation of the rotating rod 901. The rotating rod 901 drives the rotation of the rotating disk 902. The rotation of the rotating disk 902 drives the movement of the connecting rod 903, forcing the connecting rod 903 to move. The connecting rod 903 drives the sector gear 1002 to move along, forcing the oscillating gear 1004 to move, causing the oscillating rod 1003 to move. Thus, the oscillating rod 1003 drives the movement of the oscillating block 1101, the threaded rod 1102 and the adjusting block 1103, forcing the connecting rod 1601, the deviation rectifying rod 1202 and the deviation rectifying roller 1203 to move. The deviation rectifying roller 1203 is forced to move from one side of the arc track to the middle position of the arc track. The two deviation rectifying rollers 1203 pull the cast film, so that the cast film moves from the outer deviation position to the inner side, and the cast film is adjusted to the normal track through the tensioning device;

[0051] Due to the action of the spring 1304, when the cast film returns to the normal track, that is, when the movable block 1303 does not return in time, stop the drive motor 801 at this time. When the cast film is restored, the cast film does not exert a force on the movable block 1303. The movable block 1303 returns to its original position, forcing the shaft rod 1302 to rotate, so that the driven assembly 15 and the transmission assembly 16 return to their original positions. Start the electric push rod 1401. The output end of the electric push rod 1401 drives the pre-pressure bearing block 1402 to return to its original position, that is, the pre-pressure bearing block 1402 is located in front of the movable block 1303, completing a deviation rectifying action;

[0052] On the one hand, when the cast film is normally conveyed, the proposed solution can achieve the effect of removing wrinkles from the cast film and reduce the phenomenon of wrinkles on the cast film. On the other hand, when the cast film is abnormally conveyed, that is, when deviation occurs, by using the deviation force of the cast film, the adjustment of the deviation rectifying roller 1203 is realized, forcing the deviation rectifying roller 1203 to be in close contact with the cast film, so as to achieve the deviation rectifying effect on the cast film, further reducing the phenomenon of wrinkles or scratches on the cast film. There is no need to stop the production line for processing, improving the product quality, facilitating the protection of equipment, thus improving the production efficiency, increasing the overall production capacity, and facilitating the production of the cast film.

[0053] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. Multi-layer co-extrusion cast film production line, characterized in that: The invention comprises a support platform (1), wherein an extruder (2) for extruding a cast film is arranged on the support platform (1), an air knife (3) is arranged on the support platform (1), and a cooling roller (4), a finishing roller (5) and a winding roller (6) are arranged on the support platform (1) in sequence; a support frame (7) is arranged on the support platform (1), a driving mechanism (8) is arranged on the support frame (7), a reciprocating component (9) connected to the driving mechanism (8) is arranged on the support frame (7), a swinging component (10) connected to the reciprocating component (9) is arranged on the support frame (7), an adjusting component (11) is arranged on the swinging component (10), a deviation correction component (12) is arranged at the output end of the adjusting component (11), and an instant-acting component (13) is arranged on the support frame (7) , pre-pressure components (14) are arranged on both sides of the movable component (13), a driven component (15) is arranged on the movable component (13), and a transmission component (16) is arranged between the adjustment component (11) and the driven component (15); wherein, during wrinkle removal, the driving mechanism (8) drives the deviation correction component (12) to move through the reciprocating component (9), the swinging component (10) and the adjustment component (11), forcing the deviation correction component (12) to continuously remove wrinkles from the cast film; during deviation correction, the movable component (13) drives the adjustment component (11) to adjust the deviation correction component (12) to move through the driven component (15) and the transmission component (16), forcing the deviation correction component (12) to correct the deviation of the cast film.

2. The multi-layer co-extrusion cast film production line according to claim 1, characterized in that: The swing assembly (10) comprises a support rod (1001) arranged on the support frame (7), a sector gear (1002) being connected to a bearing on the support rod (1001), a swing rod (1003) being connected to a bearing on the support frame (7), and a swing gear (1004) being arranged on the swing rod (1003) and meshing with the sector gear (1002).

3. The multi-layer co-extrusion cast film production line according to claim 2, characterized in that: The reciprocating assembly (9) comprises a rotating rod (901) connected to the support frame (7) by a bearing, a rotating disk (902) being arranged on the rotating rod (901), a connecting rod (903) being hinged on a portion of the rotating disk (902) deviating from the center of the circle, and an end of the connecting rod (903) being hinged on a portion of the sector gear (1002) deviating from the center of the circle.

4. The multi-layer co-extrusion cast film production line according to claim 3, characterized in that: The driving mechanism (8) comprises a driving motor (801) arranged on the supporting frame (7); the output shaft of the driving motor (801) is connected to a driving bevel gear (802); and a driven bevel gear (803) meshing with the driving bevel gear (802) is fixedly sleeved on the rotating rod (901).

5. The multi-layer co-extrusion cast film production line according to claim 4, characterized in that: The adjustment component (11) comprises a swing block (1101) arranged on the swing rod (1003); a threaded rod (1102) is connected to a bearing on the swing block (1101); both ends of the threaded rod (1102) are threadedly connected to an adjustment block (1103) that passes through the swing block (1101); the two ends of the threaded rod (1102) are arranged with opposite thread structures; the threaded rod (1102) respectively threads through two adjustment blocks (1103).

6. The multi-layer co-extrusion cast film production line according to claim 5, characterized in that: The deviation correction component (12) comprises a connecting block (1201) arranged on the adjusting block (1103); a deviation correction rod (1202) is connected to a bearing on the connecting block (1201); and a deviation correction roller (1203) is fixedly sleeved on the deviation correction rod (1202).

7. The multi-layer co-extrusion cast film production line according to claim 6, characterized in that: The instant action component (13) comprises a fixing frame (1301) arranged on the supporting frame (7); a shaft (1302) is connected to the fixing frame (1301) by a bearing; a U-shaped instant action block (1303) is arranged on the shaft (1302); and a spring (1304) is arranged between the instant action block (1303) and the fixing frame (1301).

8. The multi-layer co-extrusion cast film production line according to claim 7, characterized in that: The pre-pressure assembly (14) comprises an electric push rod (1401) arranged on the fixing frame (1301), and a U-shaped pre-pressure block (1402) is arranged at the output end of the electric push rod (1401), and the pre-pressure block (1402) is located in front of the movable block (1303).

9. The multi-layer co-extrusion cast film production line according to claim 8, characterized in that: The driven assembly (15) comprises a driven spur rack (1501) slidably arranged on the fixed frame (1301), and a driven gear (1502) meshing with the driven spur rack (1501) is fixedly sleeved on the shaft (1302).

10. The multi-layer co-extrusion cast film production line according to claim 9, characterized in that: The transmission assembly (16) comprises a connecting rod (1601) connected to the driven spur rack (1501), the connecting rod (1601) is provided with a mounting rod (1602), the mounting rod (1602) is provided with a transmission spur rack 1 (1603) and a transmission spur rack 2 (1604), and a transmission gear (1605) is fixedly sleeved on the threaded rod (1102), and the transmission gear (1605) is respectively meshed with the transmission spur rack 1 (1603) and the transmission spur rack 2 (1604).

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