Three-layer co-extrusion cast film extrusion production line

Abstract

The invention relates to the field of cast films, and particularly discloses a three-layer co-extrusion cast film extrusion production line which comprises a supporting plate, an extruder for extruding a three-layer cast film is installed on the supporting plate, and an air knife is arranged on the supporting plate and located below the extruder. A cooling roller, a finishing roller and a winding roller which are connected with a driving source are sequentially arranged on the supporting plate. The cutting edge of the casting film can be extruded and clamped, the layering phenomenon of the casting film is avoided, cutting of the casting film is facilitated, slag removal and film stripping treatment can be conducted on the output end of the cutting mechanism during tool retracting, and the situation that the cutting mechanism drives the casting film to move along with the casting film due to the fact that the casting film adheres to the cutting mechanism is avoided; and layering of the cast film is further avoided, abnormal phenomena such as bubbles of the follow-up cast film are avoided, winding work of the cast film is facilitated, the machining efficiency is improved, multiple properties of the cast film are improved, the quality and reliability of the cast film are improved, and therefore the market competitiveness of products is improved.

Description

Technical Field

[0001] The invention relates to the technical field of cast films, in particular to a three-layer co-extruded cast film extrusion production line. Background Art

[0002] Cast film is a film made by the casting process. The film production process usually involves evenly coating the molten plastic material on a cooling roller and then cooling and solidifying it to form a film. The extrusion process of cast film generally includes material preparation, melt extrusion, cooling and shaping, traction cutting, and winding inspection. The three-layer co-extrusion cast film uses three extrusion equipment to extrude the melt during melt extrusion, so that the melt converges in the casting head to form a three-layer structure.

[0003] In the existing patent CN202491398U, a single-layer and multi-layer co-extruded plastic cast film extrusion production line with a simple structure, a high degree of production line automation and low energy consumption is disclosed, which is characterized by including: an extruder for melting solid granular plastic into a colloidal output, a double-station hydraulic screen changer suitable for uninterrupted replacement of the filter screen arranged at the output end of the extruder, a forming mold arranged downstream of the double-station hydraulic screen changer for co-extruding the colloidal plastic into a sheet through an in-mold, a casting machine arranged at the output end of the forming mold for smoothing the surface of the sheet, a thickness measuring unit arranged downstream of a three-roll calender for detecting the thickness of the sheet, a corona treatment unit arranged downstream of the thickness measuring unit for attaching charged particles to the surface of the sheet, a trimming and recovery unit arranged downstream of the corona treatment unit, and a double-station winding unit arranged downstream of the trimming and recovery unit.

[0004] In the above structure, the production of cast film can be realized. However, after the three-layer cast film is extruded, when it is cut, the cutter will contact the cast film. During the retraction process, the edge of the cast film will adhere to the cutter, which can easily cause stratification of the cast film and cause multiple bubbles to appear in the subsequent cast film, which is not conducive to the winding of the cast film, reduces the processing efficiency of the cast film, reduces various properties of the cast film, affects the quality and reliability of the product, and reduces the market competitiveness of the cast film.

[0005] Therefore, how to provide a three-layer co-extrusion cast film extrusion production line is a problem that those skilled in the art need to solve urgently. Summary of the invention

[0006] One object of the present invention is to provide a three-layer co-extruded cast film extrusion production line, the three-layer co-extruded cast film extrusion production line of the present invention comprises a support plate, an extruder for extruding a three-layer cast film is mounted on the support plate, an air knife is arranged below the extruder on the support plate, and a cooling roller, a finishing roller and a winding roller connected to a driving source are arranged in sequence on the support plate;

[0007] The support plate is provided with a support frame, a cutting mechanism is provided on the support frame between the finishing roller and the winding roller, a pushing component is provided on the support plate, a lifting component is provided at the output end of the pushing component, and adjustment components are symmetrically provided on both sides of the cutting mechanism on the lifting component, and an extrusion component for extruding the cast film is provided on the adjustment component;

[0008] The lifting component is provided with a connecting component, the cutting mechanism is provided with a transmission component connected to the connecting component, a driven component is provided between the adjusting component and the connecting component, and the lifting component is provided with a slag removal component for removing residual cast film on the cutting mechanism.

[0009] Preferably, the cutting mechanism comprises a hydraulic telescopic rod mounted on the support frame, the output end of the hydraulic telescopic rod is provided with a cutting knife, and the width of the cutting knife decreases from top to bottom.

[0010] Preferably, the pushing assembly comprises a hydraulic push rod mounted on the support plate, a connecting block is provided at the output end of the hydraulic push rod, and a bearing plate connected to the connecting block is slidably provided on the support plate.

[0011] Preferably, the lifting assembly comprises a hydraulic lifting rod symmetrically mounted on the bearing plate, a load-bearing block is arranged at the output end of the hydraulic lifting rod, and a connecting rod is arranged on the load-bearing block.

[0012] Preferably, the adjustment assembly includes a threaded rod connected to one of the load-bearing blocks by a bearing, and the two ends of the threaded rod are respectively arranged as opposite threaded structures. A guide rod is arranged on the other load-bearing block, and the two ends of the threaded rod are respectively threadedly connected to an upper adjustment rod and a lower adjustment rod, and the two ends of the threaded rod are respectively threaded through the upper adjustment rod and the lower adjustment rod, and the guide rod passes through the upper adjustment rod and the lower adjustment rod.

[0013] Preferably, the extrusion assembly includes an extrusion plate arranged on the upper adjusting rod, and the lower adjusting rod is provided with an extrusion groove corresponding to the extrusion plate, wherein when the extrusion plate extrude the cast film into the extrusion groove, an extrusion effect is formed on the edge of the cast film.

[0014] Preferably, the connecting assembly includes a fixed plate arranged on the connecting rod, an electric push rod is installed on the fixed plate, a connecting plate is provided at the output end of the electric push rod, a rotating rod is connected to a bearing on the connecting plate, a rotating gear is fixedly sleeved on the rotating rod, and a clamping gear is fixedly sleeved at the end of the rotating rod.

[0015] Preferably, the transmission assembly includes a support rod arranged at the output end of the hydraulic telescopic rod, and a spur rack meshing with the rotating gear is arranged on the support rod, and the spur rack is arranged along the output direction of the hydraulic telescopic rod.

[0016] Preferably, the driven assembly includes a driven rod connected to the fixed plate by a bearing, a rotating cylinder is provided on the driven rod, an inner wall of the rotating cylinder is provided with an internal gear ring meshing with the clamping gear, a driving bevel gear is provided at the end of the driven rod, and a driven bevel gear meshing with the driving bevel gear is fixedly sleeved on the threaded rod.

[0017] Preferably, the slag removal assembly includes a sliding rod arranged on the connecting rod, a mounting block is arranged at the end of the sliding rod, a slag removal roller is mounted on the mounting block, both of the slag removal rollers are in tangential contact with the cutting knife, a limiting plate is arranged at the end of the sliding rod, and a spring is arranged between the mounting block and the connecting rod and is sleeved on the outer ring of the sliding rod.

[0018] The beneficial effects of the present invention are as follows:

[0019] When extruding a three-layer cast film, the present invention puts three kinds of raw materials into the feed port of the extruder respectively, and the extruder extrude the cast film. Under the action of the 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 transport the cast film. The cast film is transported to the winding roller through the arranging action of the arranging roller. The winding roller continuously winds up the cast film. After the winding roller completes the winding of the cast film, the cast film needs to be cut. The transmission component is connected to the connecting component, and the cutting mechanism is started. The cutting mechanism drives the transmission component to move, the transmission component drives the connecting component to move, and forces the driven component to move. The driven component drives the adjusting component to move, and forces the extrusion component to extrude the edges of the cast film on both sides of the cutting mechanism. The cutting mechanism is pressed and connected, and the cutting mechanism is continued to be started. The cutting mechanism moves downward to cut off the cast film, forcing the slag removal component to move to both sides, and the output end of the cutting mechanism is located below the slag removal component, and the extrusion component squeezes and connects the cast film to avoid the stratification of the cast film during cutting; the connecting component is separated from the transmission component, and the lifting component is started. The lifting component moves downward and forces the cutting mechanism to return to its original height. The lifting component forces the adjusting component, the extrusion component and the slag removal component to move downward, and the extrusion component drives the head of the cast film to move downward to a reasonable position. At the same time, the slag removal component and the cutting mechanism move relative to each other, and the residual cast film at the output end of the cutting mechanism is removed and stripped to clean it, which again avoids the cast film adhering to the cutting mechanism and causing stratification. For example, when the slag removal component is completely separated from the cutting mechanism, the pushing component is started, and the pushing component drives the lifting component to move horizontally, forcing the adjusting component, the extruding component and the slag removal component to move horizontally, forcing the extruding component to drive the head of the cast film to move to the winding roller, and at the same time starting the driving source to complete the winding of the winding roller. The staff replaces the winding roller and processes the cast film, rotates the connecting component, and forces the adjusting component to drive the extruding component to return to its original position, thereby allowing the extruding component to release the other head of the cast film. The staff clamps the other head of the cast film on the next winding roller, forcing the lifting component to return to its original position, so that the cast film is located in the middle position of the extruding component, forcing the pushing component Return to the original position, repeat the above steps, and complete the next cutting of the cast film; in summary, the three-layer co-extrusion cast film extrusion production line of the present application can realize the extrusion and clamping of the cutting edge of the cast film, avoid the stratification of the cast film, and facilitate the cutting of the cast film. At the same time, when the knife is retracted, the output end of the cutting mechanism can be deslagging and demolding processed to avoid the cast film adhering to the cutting mechanism, causing the cutting mechanism to drive the cast film to follow the movement, further avoid the stratification of the cast film, avoid the subsequent abnormal phenomena such as bubbles in the cast film, facilitate the winding of the cast film, improve the processing efficiency of the cast film, improve the various properties of the cast film, improve the quality and reliability of the cast film, thereby enhancing the market competitiveness of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 It is a three-dimensional structure entity diagram of the present invention;

[0022] Figure 2 It is a front view of the present invention;

[0023] Figure 3 It is a partial structural entity diagram of the present invention;

[0024] Figure 4 It is a structural entity diagram of the cutting mechanism of the present invention;

[0025] Figure 5 It is a structural entity diagram of the driving assembly of the present invention;

[0026] Figure 6 A structural entity diagram of the regulating assembly of the present invention;

[0027] Figure 7 It is a structural entity diagram of the slag removal assembly of the present invention;

[0028] Figure 8 A diagram showing the positional relationship between the connecting component and the driven component of the present invention;

[0029] Fig. 9 It is a structural entity diagram of the connection assembly of the present invention;

[0030] Fig.10 It is a structural entity diagram of the driven component of the present invention.

[0031] In the figure: 1, support plate; 2, extruder; 3, air knife; 4, cooling roller; 5, finishing roller; 6, winding roller; 7, support frame; 8, cutting mechanism; 801, hydraulic telescopic rod; 802, cutting knife; 9, pushing assembly; 901, hydraulic push rod; 902, connecting block; 903, bearing plate; 10, lifting assembly; 1001, hydraulic lifting rod; 1002, bearing block; 1003, connecting rod; 11, adjusting assembly; 1101, threaded rod; 1102, guide rod; 1103, upper adjusting rod; 1104, lower adjusting rod; 12, extrusion assembly; 1201, extrusion plate; 1202 , extrusion groove; 13, connecting assembly; 1301, fixed plate; 1302, electric push rod; 1303, connecting plate; 1304, rotating rod; 1305, rotating gear; 1306, clamping gear; 14, transmission assembly; 1401, support rod; 1402, spur rack; 15, driven assembly; 1501, driven rod; 1502, rotating drum; 1503, internal gear ring; 1504, driving bevel gear; 1505, driven bevel gear; 16, slag removal assembly; 1601, sliding rod; 1602, mounting block; 1603, slag removal roller; 1604, limit plate; 1605, spring. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0033] Embodiment 1:

[0034] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the three-layer co-extruded cast film extrusion production line of the present invention comprises a support plate 1, an extruder 2 for extruding a three-layer cast film is installed on the support plate 1, an air knife 3 is arranged below the extruder 2 on the support plate 1, a cooling roller 4, a finishing roller 5 and a winding roller 6 connected to a driving source are sequentially arranged on the support plate 1, the number of the cooling roller 4 and the finishing roller 5 is reasonably designed according to the demand, and the winding roller 6 can be designed to be detachably installed, so as to facilitate the replacement of the winding roller 6;

[0035] A support frame 7 is provided on the support plate 1, a cutting mechanism 8 is provided on the support frame 7 between the finishing roller 5 and the winding roller 6, a pushing component 9 is provided on the support plate 1, a lifting component 10 is provided at the output end of the pushing component 9, and adjustment components 11 are symmetrically provided on both sides of the cutting mechanism 8 on the lifting component 10, and an extrusion component 12 for extruding the cast film is provided on the adjustment component 11;

[0036] The lifting assembly 10 is provided with a connecting assembly 13, the cutting mechanism 8 is provided with a transmission assembly 14 connected to the connecting assembly 13, a driven assembly 15 is provided between the adjusting assembly 11 and the connecting assembly 13, and the lifting assembly 10 is provided with a slag removal assembly 16 for removing residual cast film on the cutting mechanism 8.

[0037] Working principle: When extruding a three-layer cast film, the three raw materials are respectively put into the feed port of the extruder 2, and the extruder 2 extrude 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 transport the cast film. The cast film is transported to the winding roller 6 through the sorting action of the sorting roller 5. The winding roller 6 continuously winds up the cast film. When the winding roller 6 completes the winding of the cast film, the cast film needs to be cut, and the transmission component 14 is connected to the connecting component 13, and the cutting mechanism 8 is started. The cutting mechanism 8 drives the transmission component 14 to move, and the transmission component 14 drives the connecting component 13 to move. The component 13 moves, forcing the driven component 15 to move, and the driven component 15 drives the adjusting component 11 to move, forcing the extrusion component 12 to squeeze and clamp the edges of the cast film on both sides of the cutting mechanism 8, and continue to start the cutting mechanism 8, the cutting mechanism 8 moves downward to cut the cast film, forcing the slag removal component 16 to move to both sides, and the output end of the cutting mechanism 8 is located below the slag removal component 16, and the extrusion component 12 squeezes and clamps the cast film to avoid the stratification of the cast film during cutting; separate the connecting component 13 from the transmission component 14, start the lifting component 10, the lifting component 10 moves downward, and at the same time forces the cutting mechanism 8 to retreat to its original height. The lifting component 10 forces the adjusting component 11, the extruding component 12 and the slag removal component 16 to move downward, and the extruding component 12 drives the head of the cast film to move downward to a reasonable position. At the same time, the slag removal component 16 and the cutting mechanism 8 move relative to each other, and the residual cast film at the output end of the cutting mechanism 8 is removed and cleaned, and the cast film is again prevented from adhering to the cutting mechanism 8 and causing stratification. When the slag removal component 16 is completely separated from the cutting mechanism 8, the pushing component 9 is started, and the pushing component 9 drives the lifting component 10 to move horizontally, forcing the adjusting component 11, the extruding component 12 and the slag removal component 16 to move horizontally, forcing the extruding component 12 to drive The head of the cast film moves to the winding roller 6, and the driving source is started at the same time to complete the winding work of the winding roller 6. The staff replaces the winding roller 6 and processes the cast film, and rotates the connecting component 13 to force the adjusting component 11 to drive the extrusion component 12 to return to the original position, so that the extrusion component 12 releases the other head of the cast film. The staff clamps the other head of the cast film on the next winding roller 6, and forces the lifting component 10 to retreat to the original position, so that the cast film is located in the middle position of the extrusion component 12, and forces the pushing component 9 to retreat to the original position, and repeats the above steps to complete the next cutting of the cast film;In summary, the three-layer co-extrusion cast film extrusion production line of the present application can realize the extrusion clamping of the cut edge of the cast film, avoid the stratification of the cast film, and facilitate the cutting of the cast film. At the same time, when the knife is withdrawn, the output end of the cutting mechanism 8 can be deslagging and film stripping treatment can be performed to avoid the cast film adhering to the cutting mechanism 8, which causes the cutting mechanism 8 to drive the cast film to follow the movement, further avoid the stratification of the cast film, avoid the subsequent abnormal phenomena such as bubbles in the cast film, and facilitate the winding of the cast film, improve the processing efficiency of the cast film, improve the various properties of the cast film, and improve the quality and reliability of the cast film, thereby enhancing the market competitiveness of the product. ;

[0038] Embodiment 2:

[0039] like Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, in the three-layer co-extrusion cast film extrusion production line of the present invention, the cutting mechanism 8 includes a hydraulic telescopic rod 801 installed on the support frame 7, and a cutting knife 802 is provided at the output end of the hydraulic telescopic rod 801, and the width of the cutting knife 802 decreases from top to bottom.

[0040] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, in the three-layer co-extrusion cast film extrusion production line of the present invention, the pushing component 9 includes a hydraulic push rod 901 installed on the support plate 1, a connecting block 902 is provided at the output end of the hydraulic push rod 901, and a bearing plate 903 connected to the connecting block 902 is slidably provided on the support plate 1.

[0041] like Figure 2 , Figure 3 , Figure 5 and Figure 7 As shown, in the three-layer co-extrusion cast film extrusion production line of the present invention, the lifting component 10 includes a hydraulic lifting rod 1001 symmetrically installed on the bearing plate 903, and a load-bearing block 1002 is provided at the output end of the hydraulic lifting rod 1001, and a connecting rod 1003 is provided on the load-bearing block 1002.

[0042] like Figure 3 and Figure 6As shown, in the three-layer co-extrusion cast film extrusion production line of the present invention, the adjusting component 11 includes a threaded rod 1101 connected by a bearing to a load-bearing block 1002, and the two ends of the threaded rod 1101 are respectively set to opposite threaded structures, and a guide rod 1102 is arranged on the other load-bearing block 1002, and the two ends of the threaded rod 1101 are respectively threadedly connected to an upper adjusting rod 1103 and a lower adjusting rod 1104, and the two ends of the threaded rod 1101 are respectively threaded through the upper adjusting rod 1103 and the lower adjusting rod 1104, and the guide rod 1102 penetrates the upper adjusting rod 1103 and the lower adjusting rod 1104.

[0043] like Figure 3 and Figure 6 As shown, the three-layer co-extrusion cast film extrusion production line of the present invention, the extrusion component 12 includes an extrusion plate 1201 arranged on the upper adjusting rod 1103, and the lower adjusting rod 1104 is provided with an extrusion groove 1202 corresponding to the extrusion plate 1201, wherein when the extrusion plate 1201 extrude the cast film into the extrusion groove 1202, an extrusion effect is formed on the edge of the cast film.

[0044] like Figure 8 and Fig. 9 As shown, in the three-layer co-extrusion cast film extrusion production line of the present invention, the connecting component 13 includes a fixed plate 1301 arranged on the connecting rod 1003, an electric push rod 1302 is installed on the fixed plate 1301, a connecting plate 1303 is arranged at the output end of the electric push rod 1302, a rotating rod 1304 is connected to the bearing on the connecting plate 1303, a rotating gear 1305 is fixedly sleeved on the rotating rod 1304, and a clamping gear 1306 is fixedly sleeved on the end of the rotating rod 1304.

[0045] like Figure 2 , Figure 3 and Figure 4 As shown, in the three-layer co-extrusion cast film extrusion production line of the present invention, the transmission assembly 14 includes a support rod 1401 arranged at the output end of the hydraulic telescopic rod 801, and a spur rack 1402 meshing with the rotating gear 1305 is arranged on the support rod 1401, and the spur rack 1402 is arranged along the output direction of the hydraulic telescopic rod 801.

[0046] like Figure 6 , Figure 8 and Fig.10 As shown, in the three-layer co-extrusion cast film extrusion production line of the present invention, the driven component 15 includes a driven rod 1501 connected to a fixed plate 1301 by a bearing, a rotating drum 1502 is arranged on the driven rod 1501, an inner wall of the rotating drum 1502 is provided with an internal gear ring 1503 meshing with the clamping gear 1306, a driving bevel gear 1504 is arranged at the end of the driven rod 1501, and a driven bevel gear 1505 meshing with the driving bevel gear 1504 is fixedly sleeved on the threaded rod 1101.

[0047] like Figure 3 and Figure 7 As shown, in the three-layer co-extrusion cast film extrusion production line of the present invention, the slag removal component 16 includes a sliding rod 1601 arranged on the connecting rod 1003, a mounting block 1602 is arranged at the end of the sliding rod 1601, a slag removal roller 1603 is installed on the mounting block 1602, the slag removal roller 1603 is fixedly arranged on the mounting block 1602, both of the two slag removal rollers 1603 are in tangential contact with the cutting knife 802, a limiting plate 1604 is arranged at the end of the sliding rod 1601, and a spring 1605 is arranged between the mounting block 1602 and the connecting rod 1003 and is sleeved on the outer ring of the sliding rod 1601.

[0048] Working principle: When extruding a three-layer cast film, three kinds of raw materials are respectively put into the feed port of the extruder 2, and the extruder 2 extrude 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 transport the cast film. The cast film is transported to the winding roller 6 through the sorting action of the sorting roller 5. The winding roller 6 continuously winds up the cast film, forming a cast film processing production line, and realizing the purpose of extrusion production of the three-layer cast film;

[0049] After the winding roller 6 completes the winding of the cast film, it is necessary to cut the cast film, and the electric push rod 1302 is started. The output end of the electric push rod 1302 drives the connecting plate 1303 to move, and the connecting plate 1303 drives the rotating rod 1304 to move. The rotating rod 1304 drives the clamping gear 1306 and the rotating gear 1305 to move, forcing the clamping gear 1306 to slide in the inner gear ring 1503, and the clamping gear 1306 and the inner gear ring 1503 are always meshed. At the same time, the rotating gear 1305 and the spur rack 1402 are on the same plane. At this time, the rotating gear 1305 and the spur rack 1402 are not meshed, and the hydraulic telescopic rod 801 is started. The output end of the hydraulic telescopic rod 801 drives the cutting knife 802 to move downward, and at the same time, the hydraulic telescopic rod 801 drives the support rod 1401 to move downward, and the support rod 1401 drives the spur rack 1402 to move downward to a reasonable position, forcing the spur rack 1402 to mesh with the rotating gear 1305;

[0050] The hydraulic telescopic rod 801 is continuously started, forcing the hydraulic telescopic rod 801 to drive the cutting knife 802 to continue to move downward. At this time, the spur rack 1402 drives the rotating gear 1305 to rotate, and the rotating gear 1305 drives the rotating rod 1304 to rotate, and the rotating rod 1304 drives the clamping gear 1306 to rotate. Under the meshing action of the clamping gear 1306 and the inner gear ring 1503, the rotating drum 1502 is forced to rotate, and the rotating drum 1502 drives the driven rod 1501 to rotate, and the driven rod 1501 drives the active bevel gear 1504 to rotate, and the active bevel gear 1504 drives the driven bevel gear 1505 The threaded rod 1101 rotates, and under the guidance of the guide rod 1102, the threaded rod 1101 is forced to drive the upper adjustment rod 1103 to move downward, and the lower adjustment rod 1104 to move upward, until the extrusion plate 1201 squeezes the edge of the cast film into the extrusion groove 1202, so that the extrusion plate 1201 and the extrusion groove 1202 squeeze and clamp the cast film on both sides of the cutting position; the hydraulic telescopic rod 801 is continued to be started, and the hydraulic telescopic rod 801 is forced to drive the cutting knife 802 to continue to move downward, at this time, the spur rack 1402 is separated from the rotating gear 1305, and the cutting knife 802 cuts the cast film;

[0051] Due to the shape of the cutting blade 802, both sides of the cutting blade 802 are forced to exert force on the slag removal roller 1603, and the slag removal roller 1603 drives the mounting block 1602 to move, and the mounting block 1602 drives the sliding rod 1601 to move on the connecting rod 1003. At this time, the spring 1605 is compressed, and the cutting blade 802 is located below the slag removal roller 1603, and the cutting blade 802 is in contact with the slag removal roller 1603. At this time, the extrusion plate 1201 and the extrusion groove 1202 are in an extrusion clamping state with the cast film, which effectively avoids the stratification of the cast film during cutting;

[0052] The electric push rod 1302 is started, and the output end of the electric push rod 1302 drives the connecting plate 1303 to move, the connecting plate 1303 drives the rotating rod 1304 to move, and the rotating rod 1304 drives the clamping gear 1306 and the rotating gear 1305 to move, forcing the clamping gear 1306 to slide in the inner gear ring 1503, and the clamping gear 1306 and the inner gear ring 1503 are always meshed, and at the same time, the rotating gear 1305 and the spur rack 1402 are forced to be not on the same plane;

[0053] At this time, the hydraulic lifting rod 1001 is started, forcing the hydraulic lifting rod 1001 to move down, and at the same time forcing the hydraulic telescopic rod 801 to move up, forcing the cutting knife 802 to retreat to the original position. Since the rotating gear 1305 and the spur rack 1402 are not on the same plane, when the cutting knife 802 retreats, the spur rack 1402 and the rotating gear 1305 are not engaged, so the extrusion plate 1201 and the extrusion groove 1202 are in an extrusion clamping state for the cast film;

[0054] The hydraulic lifting rod 1001 moves downward, driving the load-bearing block 1002 and the connecting rod 1003 to move downward, and the load-bearing block 1002 and the connecting rod 1003 drive the adjusting assembly 11, the extrusion assembly 12, the slag removal assembly 16, the driven assembly 15 and the connecting assembly 13 to move downward, forcing the extrusion plate 1201 and the extrusion groove 1202 to drive the cast film to move downward to a reasonable position. At this time, the slag removal roller 1603 and the cutting knife 802 move relative to each other, forcing the slag removal roller 1603 to remove the slag and film from the residual cast film on the cutting knife 802, and again avoiding the cast film adhering to the cutting knife 802 to cause stratification;

[0055] When the slag removal roller 1603 is completely separated from the cutting knife 802, in order to improve the safety of the staff when replacing the winding roller 6, the hydraulic push rod 901 is started, and the output end of the hydraulic push rod 901 drives the connecting block 902 to move horizontally, and the connecting block 902 drives the supporting plate 903 to move horizontally, so that the position of replacing the cast film is away from the cutting knife 802, forcing the adjustment component 11, the extrusion component 12, the slag removal component 16, the driven component 15 and the connecting component 13 to move horizontally close to the winding roller 6, forcing the extrusion plate 1201 and the extrusion groove 1202 to drive the heads of the two cut parts of the cast film to move to the winding roller 6, and synchronously start the driving source, and the winding roller 6 completes the winding of the cast film;

[0056] When replacing the winding roller 6, first rotate a rotating gear 1305 to force the upper adjusting rod 1103 to move upward and the lower adjusting rod 1104 to move downward until the upper adjusting rod 1103 and the lower adjusting rod 1104 return to their original positions, so that the extrusion plate 1201 on one side is separated from the extrusion groove 1202, thereby releasing the head of the cast film on the winding roller 6, and the staff replaces the winding roller 6 and processes the cast film; rotate another rotating gear 1305 again, so that the extrusion plate 1201 on the other side is also separated from the extrusion groove 1202, thereby releasing the head of the cast film on the production line, and clamping the head of the cast film on the production line on the replaced winding roller 6;

[0057] Start the hydraulic lifting rod 1001 in reverse to force it back to its original position, so that the cast film on the production line is located between the extrusion plate 1201 and the extrusion groove 1202, that is, the extrusion plate 1201 and the extrusion groove 1202 are not in contact with the cast film, start the hydraulic push rod 901 to force it back to its original position, so that all devices return to their original positions, repeat the above steps to complete the next cutting of the cast film.

[0058] The setting of the cutting mechanism 8 can realize the cutting action of the cast film, and at the same time can provide power to drive the transmission component 14 to move, and the cutting knife 802 can generate a force on the slag removal component 16; the setting of the pushing component 9 can realize the movement of the cut cast film head, so that the cast film moves to the winding roller 6, and the clamping position of the cast film is changed, which is convenient for the staff to operate the cast film and improves the safety of the staff; the setting of the lifting component 10 lowers the height of the device, so that the cast film and the cutting knife 802 are quickly separated, and the residue on the cutting knife 802 is quickly cleaned, which improves the processing efficiency of the device, cooperates with the retreat of the cutting knife 802, reduces the height of the device, and facilitates the rapid operation of the device; the setting of the adjusting component 11 can realize the adjustment of the position of the extrusion component 12, so that the extrusion plate 1201 and the extrusion groove 1202 are separated to release the cast film or close and extrude the cast film, and the setting of the threaded rod 1101 can realize the clamping of the upper adjustment rod 1103 and the lower adjustment rod 1104. Avoid free movement of the upper adjusting rod 1103 and the lower adjusting rod 1104; the setting of the connecting component 13 can achieve docking with the transmission component 14. When they are in the same plane, the transmission function of the transmission component 14 is realized. When they are not in the same plane, the free movement of the connecting component 13 is realized, thereby improving the flexibility of the device; the setting of the transmission component 14 can realize the transmission function of the cutting mechanism 8, so that the movement force of the cutting mechanism 8 is transmitted to the connecting component 13, thereby improving the transmission capacity of the device; the setting of the driven component 15 can change the transmission direction of the force, and transmit the force to the adjusting component 11, forcing the adjusting component 11 to flexibly adjust the extrusion component 12, thereby improving the rationality and flexibility of the device; the setting of the slag removal component 16 can realize the cleaning function of the residue on the cutting knife 802. While cleaning the residue of the cutting knife 802, it can avoid the cast film from following the movement, thereby improving the service life of the cutting knife 802, further avoiding the stratification of the cast film, improving the performance of the cast film, and improving the quality of the cast film.

[0059] On the one hand, this solution can achieve the extrusion and clamping of the cutting edge of the cast film to avoid the stratification of the cast film and facilitate the cutting of the cast film. On the other hand, when retracting the knife, the cutting knife 802 can be deslagging and demolding to avoid the cast film adhering to the cutting knife 802, which causes the cast film to follow the movement when the cutting knife 802 retreats, further avoiding the stratification of the cast film and the subsequent abnormal phenomena such as bubbles in the cast film, which is beneficial to the winding of the cast film, improves the processing efficiency of the cast film, improves the various properties of the cast film, and improves the quality and reliability of the cast film, thereby enhancing the market competitiveness of the product; and when replacing the winding roller 6, the cutting position of the cast film is changed, so that the head of the cast film is away from the cutting knife 802, which is convenient for the staff to replace the winding roller 6, and greatly improves the safety of the staff.

[0060] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. Three-layer co-extrusion cast film extrusion production line, characterized in that: The invention comprises a support plate (1), on which an extruder (2) for extruding a three-layer cast film is mounted, an air knife (3) is arranged on the support plate (1) below the extruder (2), and a cooling roller (4), a finishing roller (5) and a winding roller (6) connected to a driving source are arranged in sequence on the support plate (1); The support plate (1) is provided with a support frame (7), a cutting mechanism (8) is provided on the support frame (7) between the finishing roller (5) and the winding roller (6), a pushing component (9) is provided on the support plate (1), a lifting component (10) is provided at the output end of the pushing component (9), and adjustment components (11) are symmetrically provided on both sides of the cutting mechanism (8) on the lifting component (10), and an extrusion component (12) for extruding a cast film is provided on the adjustment component (11); The lifting component (10) is provided with a connecting component (13), the cutting mechanism (8) is provided with a transmission component (14) connected to the connecting component (13), a driven component (15) is provided between the adjusting component (11) and the connecting component (13), and the lifting component (10) is provided with a slag removal component (16) for removing residual cast film on the cutting mechanism (8).

2. The three-layer co-extrusion cast film extrusion production line according to claim 1, characterized in that: The cutting mechanism (8) comprises a hydraulic telescopic rod (801) mounted on the support frame (7); a cutting knife (802) is provided at the output end of the hydraulic telescopic rod (801); and the width of the cutting knife (802) decreases from top to bottom.

3. The three-layer co-extrusion cast film extrusion production line according to claim 2, characterized in that: The pushing assembly (9) comprises a hydraulic push rod (901) mounted on the support plate (1), a connecting block (902) being provided at the output end of the hydraulic push rod (901), and a bearing plate (903) connected to the connecting block (902) being slidably provided on the support plate (1).

4. The three-layer co-extrusion cast film extrusion production line according to claim 3, characterized in that: The lifting assembly (10) comprises a hydraulic lifting rod (1001) symmetrically mounted on the bearing plate (903), a load-bearing block (1002) being arranged at the output end of the hydraulic lifting rod (1001), and a connecting rod (1003) being arranged on the load-bearing block (1002).

5. The three-layer co-extrusion cast film extrusion production line according to claim 4, characterized in that: The adjustment assembly (11) comprises a threaded rod (1101) connected to one of the bearing blocks (1002) by a bearing, the two ends of the threaded rod (1101) are respectively arranged with opposite threaded structures, the other bearing block (1002) is provided with a guide rod (1102), the two ends of the threaded rod (1101) are respectively threadedly connected to an upper adjustment rod (1103) and a lower adjustment rod (1104), the two ends of the threaded rod (1101) are respectively threadedly passed through the upper adjustment rod (1103) and the lower adjustment rod (1104), and the guide rod (1102) passes through the upper adjustment rod (1103) and the lower adjustment rod (1104).

6. The three-layer co-extrusion cast film extrusion production line according to claim 5, characterized in that: The extrusion assembly (12) includes an extrusion plate (1201) arranged on the upper adjustment rod (1103), and the lower adjustment rod (1104) is provided with an extrusion groove (1202) corresponding to the extrusion plate (1201), wherein when the extrusion plate (1201) extrude the cast film into the extrusion groove (1202), an extrusion effect is formed on the edge of the cast film.

7. The three-layer co-extrusion cast film extrusion production line according to claim 6, characterized in that: The connecting assembly (13) comprises a fixing plate (1301) arranged on the connecting rod (1003), an electric push rod (1302) is installed on the fixing plate (1301), a connecting plate (1303) is arranged at the output end of the electric push rod (1302), a rotating rod (1304) is connected to a bearing on the connecting plate (1303), a rotating gear (1305) is fixedly sleeved on the rotating rod (1304), and a clamping gear (1306) is fixedly sleeved on the end of the rotating rod (1304).

8. The three-layer co-extrusion cast film extrusion production line according to claim 7, characterized in that: The transmission assembly (14) comprises a support rod (1401) arranged at the output end of the hydraulic telescopic rod (801), and a spur rack (1402) meshing with the rotating gear (1305) is arranged on the support rod (1401), and the spur rack (1402) is arranged along the output direction of the hydraulic telescopic rod (801).

9. The three-layer co-extrusion cast film extrusion production line according to claim 8, characterized in that: The driven assembly (15) comprises a driven rod (1501) connected to the fixed plate (1301) by a bearing, a rotating cylinder (1502) being arranged on the driven rod (1501), an inner wall of the rotating cylinder (1502) being provided with an internal gear ring (1503) meshing with the engaging gear (1306), a driving bevel gear (1504) being arranged at the end of the driven rod (1501), and a driven bevel gear (1505) meshing with the driving bevel gear (1504) being fixedly sleeved on the threaded rod (1101).

10. The three-layer co-extrusion cast film extrusion production line according to claim 9, characterized in that: The slag removal component (16) includes a sliding rod (1601) arranged on the connecting rod (1003), a mounting block (1602) is arranged at the end of the sliding rod (1601), a slag removal roller (1603) is installed on the mounting block (1602), both of the two slag removal rollers (1603) are in tangential contact with the cutting knife (802), a limiting plate (1604) is arranged at the end of the sliding rod (1601), and a spring (1605) is arranged between the mounting block (1602) and the connecting rod (1003) and is sleeved on the outer ring of the sliding rod (1601).

Images