A plastic film casting production apparatus

Abstract

The application relates to a plastic film casting production device and relates to the technical field of film production. The device comprises an extruder, a cooling mechanism and a winding mechanism arranged in sequence along the horizontal direction. The cooling mechanism comprises a rack, a cooling motor, a cooling roller and a casting machine. The cooling roller is rotationally connected to the rack and is located below the outlet of the extrusion die head of the extruder. The cooling motor is arranged on the side wall of the rack, and the output end of the cooling motor is connected to the cooling roller. The casting machine is arranged on the rack. The side wall of the extruder is provided with an air extraction pump. The air extraction end of the air extraction pump is connected with a negative pressure box. The negative pressure box is arranged on the side wall of the extruder. One side of the negative pressure box close to the cooling roller is provided with a bellows. One end of the bellows away from the negative pressure box is provided with an air extraction pipe. One end of the air extraction pipe away from the bellows is provided with a connecting plate. The connecting plate is located above the cooling roller. The side wall of the connecting plate is uniformly provided with a plurality of air extraction holes. The application has the effect of improving the production efficiency of the plastic film casting production device.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of film production, in particular to a plastic film casting production device. BACKGROUND

[0002] Plastic films are widely used in our daily life, and the plastic film production industries are also various. Common processes are generally calendering method, casting method, blowing method and stretching method, etc. The plastic film produced by the casting method has the advantage of transparency and is widely used in some plastic film production.

[0003] In the casting process, the raw material is plasticized and melted by an extruder, and then extruded through the outlet of an extrusion die, so that the plastic agent body is cast in a sheet shape on the roller surface of a cooling roller rotating stably. The film sheet is cooled and shaped on the cooling roller, and then wound after being pulled by the equipment.

[0004] For the casting process, the inventor believes that when the plastic agent body flows from the extrusion die of the extruder to the cooling roller for cooling and shaping, since the cooling roller needs to continuously rotate to transport the finished plastic film cooled and shaped on the cooling roller, the plastic agent body is easily thrown off the roller surface of the cooling roller during the casting process, thereby reducing the production efficiency of the plastic film casting production device. SUMMARY

[0005] In order to improve the production efficiency of the plastic film casting production device, the application provides a plastic film casting production device.

[0006] The plastic film casting production device provided by the application adopts the following technical scheme:

[0007] A plastic film casting production device comprises an extruder, a cooling mechanism and a winding mechanism arranged in sequence in a horizontal direction, the cooling mechanism comprises a rack, a cooling motor, a cooling roller and a casting machine, the cooling roller is rotationally connected to the rack, the cooling roller is located below the outlet of the extrusion die of the extruder, the cooling motor is arranged on the side wall of the rack, the output end of the cooling motor is connected to the cooling roller, the casting machine is arranged on the rack, the side wall of the extruder is provided with a suction pump, the suction end of the suction pump is connected with a negative pressure box, the negative pressure box is arranged on the side wall of the extruder, one side of the negative pressure box close to the cooling roller is provided with a bellows, one end of the bellows away from the negative pressure box is provided with an air extraction pipe, one end of the air extraction pipe away from the bellows is provided with a connecting plate, the connecting plate is located above the cooling roller, and the side wall of the connecting plate is uniformly provided with a plurality of air extraction holes.

[0008] By adopting the above technical scheme, after the plastic agent body is extruded by the extrusion die of the extruder, the plastic agent body falls from the outlet of the extrusion die to the cooling roller, the suction pipe is arranged at the outlet of the extrusion die, the flow direction of the plastic agent body is reversely adsorbed by the adsorption force of the suction pipe during the falling of the plastic agent body to the cooling roller, and the plastic agent body flowing out of the extrusion die is tightly adsorbed on the cooling roller. At this time, the cooling roller rotates under the action of the cooling motor, the plastic agent body is cooled and shaped on the cooling roller to form a continuous plastic film, the plastic film can be fully cooled, the shaping effect of the plastic film is improved, the possibility of the plastic agent body being thrown off the cooling roller during the falling is reduced, and the production efficiency of the plastic film casting production equipment is effectively improved.

[0009] Preferably, the side wall of the suction pipe is provided with a sliding block, the side wall of the rack is provided with a sliding groove for sliding of the sliding block in the vertical direction, the end wall of the sliding groove is provided with a driving motor, the output end of the driving motor is connected with a driving screw rod, the driving screw rod is rotationally connected to the inner wall of the sliding groove, and the sliding block is threadedly connected to the side wall of the driving screw rod.

[0010] By adopting the above technical scheme, the driving motor drives the driving screw rod to rotate, the driving screw rod drives the sliding block to move in the vertical direction of the inner wall of the sliding groove, the sliding block drives the suction pipe to synchronously move in the vertical direction, the distance between the connecting plate and the cooling roller can be effectively adjusted, the reverse adsorption force of the suction pipe on the flow direction of the plastic agent body is adjusted, the adsorption force of the plastic agent body flowing out of the extrusion die on the cooling roller is adjusted, and the size of the prepared plastic film can be effectively adjusted.

[0011] Preferably, the end wall of the sliding block is provided with a mounting plate, the side of the mounting plate close to the suction pipe is provided with an adjusting groove in the vertical direction, the inner wall of the adjusting groove is slidably connected with an adjusting rod, the side wall of the adjusting rod is rotationally connected with a first connecting rod, one end of the first connecting rod away from the adjusting rod is rotationally connected to the side wall of the suction pipe, the side wall of the first connecting rod is rotationally connected with a second connecting rod, one end of the second connecting rod away from the first connecting rod is rotationally connected to the side wall of the sliding block, and the mounting plate is provided with an adjusting piece for driving the adjusting rod to move in the vertical direction.

[0012] By adopting the above technical scheme, the adjusting piece drives the adjusting rod to move in the vertical direction, the adjusting rod drives the first connecting rod to rotate in the vertical direction during the movement of the adjusting rod in the vertical direction, the first connecting rod drives the second connecting rod to rotate, and the suction pipe is further adjusted to rotate, so that the reverse adsorption force of the suction pipe on the flow direction of the plastic agent body is further adjusted.

[0013] Preferably, the adjusting member comprises an adjusting motor and an adjusting screw rod, the adjusting motor is arranged on the inner wall of the adjusting groove, the output end of the adjusting motor is connected to the adjusting screw rod, and the adjusting rod is threadedly connected to the side wall of the adjusting screw rod.

[0014] By using the above technical scheme, the adjusting motor drives the adjusting screw rod to rotate, and the adjusting screw rod drives the adjusting rod to move in the vertical direction, so as to adjust the position of the adjusting rod on the mounting plate.

[0015] Preferably, the air suction pipe comprises a positioning pipe, two abutting plates and two telescopic plates, one of the abutting plates is arranged at one end of the positioning pipe in the length direction, the other abutting plate is arranged at the other end of the positioning pipe in the length direction, one of the telescopic plates is arranged at one end of the positioning pipe in the width direction, the other telescopic plate is arranged at the other end of the positioning pipe in the width direction, the telescopic plate abuts against the side wall of the abutting plate, and the first connecting rod is rotationally connected to the side wall of the positioning pipe away from the adjusting rod.

[0016] By using the above technical scheme, the worker adjusts the opening angle of the telescopic plate between the two abutting plates, so as to adjust the flow path of the gas in the air suction pipe, and further adjust the reverse adsorption force of the air suction pipe on the flow direction of the plastic agent.

[0017] Preferably, the telescopic plate comprises a first movable plate, a second movable plate, a butt joint rod, a third movable plate, a fourth movable plate, a telescopic member and a linkage member, the first movable plate is rotationally connected to the side of the positioning pipe away from the corrugated pipe, the second movable plate is rotationally connected to the side of the first movable plate away from the positioning pipe, the butt joint rod is rotationally connected to the side of the second movable plate away from the first movable plate, the third movable plate is rotationally connected to the side of the butt joint rod away from the second movable plate, the fourth movable plate is rotationally connected to the side of the third movable plate away from the butt joint rod, the side of the fourth movable plate away from the third movable plate is rotationally connected to the side of the connecting plate away from the cooling roller, the telescopic member is arranged between the positioning pipe and the butt joint rod, and is used for adjusting the angle between the first movable plate and the second movable plate, and the linkage member is arranged between the butt joint rod and the connecting plate, and is used for adjusting the angle between the third movable plate and the fourth movable plate.

[0018] By using the above technical scheme, the telescopic member drives the first movable plate and the second movable plate to rotate, effectively adjusts the included angle between the first movable plate and the second movable plate, at this time, the butt joint rod moves in the vertical direction synchronously, the butt joint rod drives the third movable plate and the fourth movable plate to rotate through the linkage member, so as to adjust the included angle between the third movable plate and the fourth movable plate, and further adjust the flow path of the gas in the air suction pipe.

[0019] Preferably, the telescopic member comprises a telescopic rod and a rotating tube, the telescopic rod is arranged on the side of the positioning tube away from the corrugated tube, the rotating tube is threadedly connected to the side wall of the telescopic rod, and the rotating tube is rotationally connected to the side wall of the butt joint rod.

[0020] By adopting the above technical scheme, the rotation of the rotating tube drives the telescopic rod to move along the vertical direction inside the rotating tube, thereby adjusting the included angle between the first movable plate and the second movable plate. At this time, the second movable plate drives the butt joint rod to move along the vertical direction of the inner wall of the butt joint groove, and the butt joint rod drives the linkage rod to move along the vertical direction inside the fixed tube, thereby adjusting the included angle between the third movable plate and the fourth movable plate.

[0021] Preferably, the two abutting plates are provided with sealing pads on the sides close to each other.

[0022] By adopting the above technical scheme, the sealing pads are arranged, which effectively improves the stability of the telescopic plate abutting against the side wall of the abutting plate, and further improves the sealing performance of the inner wall of the air duct when the gas flows.

[0023] Preferably, the inner wall of each air suction hole is provided with a filter screen plate.

[0024] By adopting the above technical scheme, the filter screen plate is arranged, which effectively reduces the possibility of dust accumulation at the hole of the air suction hole, and further reduces the possibility of blockage of the hole of the air suction hole.

[0025] Preferably, the peripheral wall of each filter screen plate is provided with a shaking ring, the side wall of each air suction hole is provided with a shaking groove for the shaking ring to slide along the vertical direction, the side of the shaking ring close to the corrugated tube is provided with a shaking spring, and the end of the shaking spring away from the shaking ring is arranged on the inner wall of the shaking groove.

[0026] By adopting the above technical scheme, when the air pump is working, the shaking spring is compressed, and at this time, the shaking spring is elastically deformed. When the air pump stops working, the elastic force of the shaking spring drives the shaking ring to shake up and down, and the shaking ring drives the filter screen plate to shake up and down, thereby reducing the possibility of dust accumulation at the hole of the filter screen plate.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. When the plastic agent body is extruded from the extrusion die of the extruder, the plastic agent body falls from the outlet of the extrusion die to the cooling roller. By setting the air extraction pipe at the outlet of the extrusion die, the flow direction of the plastic agent body is reversely adsorbed by the adsorption force of the air extraction pipe during the falling process of the plastic agent body to the cooling roller, so that the plastic agent body extruded from the extrusion die is tightly adsorbed on the cooling roller. At this time, since the cooling roller rotates under the action of the cooling motor, the plastic agent body is cooled and shaped on the cooling roller to form a continuous plastic film, which can fully cool the plastic film, improve the shaping effect of the plastic film, reduce the possibility of the plastic agent body being thrown off the cooling roller during the falling process, and effectively improve the production efficiency of the plastic film casting production equipment.

[0029] 2. The working staff adjusts the stretching plate between the two abutting plates to open the angle, so as to adjust the flow path of the gas in the air extraction pipe, and further adjust the reverse adsorption force of the air extraction pipe on the flow direction of the plastic agent body. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is the overall structure schematic diagram of a plastic film casting production equipment in the embodiment of the present application.

[0031] Figure 2 is the sectional view of the winding mechanism in the embodiment of the present application.

[0032] Figure 3 is the sectional view of the connecting plate structure in the embodiment of the present application.

[0033] Figure 4 is the sectional view of the adjusting rod structure in the embodiment of the present application. Figure 3

[0034] Figure 5 is the sectional view of the adjusting rod structure in the embodiment of the present application.

[0035] BRIEF DESCRIPTION OF DRAWINGS

[0036] ​1, extruder; 11, air extraction pump; 12, negative pressure tank; 13, corrugated pipe; 2, cooling mechanism; 21, rack; 211, sliding groove; 212, sliding block; 213, driving motor; 214, driving screw; 22, cooling motor; 23, cooling roller; 24, casting machine; 3, winding mechanism; 31, thickness gauge; 32, swing rack; 33, winding machine; 4, air extraction pipe; 41, positioning pipe; 42, abutting plate; 43, telescopic plate; 431, first movable plate; 432, second movable plate; 433, butt joint rod; 434, third movable plate; 435, fourth movable plate; 436, telescopic piece; 4361, telescopic rod; 4362, rotating pipe; 437, linkage piece; 4371, linkage rod; 4372, fixed pipe; 5, connecting plate; 51, air extraction hole; 52, shaking groove; 6, mounting plate; 61, first connecting rod; 611, second connecting rod; 62, adjusting groove; 63, stabilizing rod; 64, third connecting rod; 641, fourth connecting rod; 7, adjusting piece; 71, adjusting motor; 72, adjusting screw; 73, adjusting rod; 731, stabilizing hole; 8, sealing gasket; 9, filter screen plate; 91, shaking ring; 911, shaking spring. DETAILED DESCRIPTION

[0037] The following description will be made in conjunction with the accompanying drawings. Figures 1-5 The application is further described in detail.

[0038] The embodiments of the application disclose a plastic film casting production equipment. Figure 1 The plastic film casting production equipment comprises, in sequence along a horizontal direction, an extruder 1, a cooling mechanism 2 and a winding mechanism 3, wherein the cooling mechanism 2 comprises a rack 21, a cooling motor 22, a cooling roller 23 and a casting machine 24; the cooling motor 22 is connected to a side wall of the rack 21 through bolts, an output end of the cooling motor 22 is connected to an end of the cooling roller 23 through bolts, the cooling roller 23 is rotationally connected to the rack 21, and the cooling roller 23 is located below an extrusion die outlet of the extruder 1.

[0039] Referring to Figure 1 and Figure 2The upper side of the cooling roller 23 is provided with an air suction pipe 4 which is installed on the side wall of the rack 21, and the air suction pipe 4 is provided with a connecting plate 5 at the pipe opening, and the side wall of the connecting plate 5 is uniformly provided with a plurality of air suction holes 51, and the air suction pipe 4 is connected with a corrugated pipe 13 at the end away from the cooling roller 23, and the corrugated pipe 13 is connected with a negative pressure box 12 at the end away from the air suction pipe 4; the negative pressure box 12 is connected with the side wall of the extruder 1 by bolts, and the negative pressure box 12 is connected with an air suction pump 11 on the side wall, and the air suction pump 11 is connected with the side wall of the extruder 1 by bolts. When the extrusion die of the extruder 1 extrudes the plastic agent, the plastic agent falls on the cooling roller 23, at this time, the cooling roller 23 rotates under the action of the cooling motor 22, the plastic agent is cooled and shaped on the cooling roller 23, forming a continuous plastic film, and the plastic film is rotated by the rotating roller of the casting machine 24, so that the plastic film is cooled and shaped. When the plastic agent falls from the outlet of the extrusion die to the cooling roller 23, the air suction pump 11 reverses the flow direction of the plastic agent by the adsorption force of the negative pressure box 12 and the air suction pipe 4 in turn, so that the plastic agent flowing out of the extrusion die of the extruder 1 is tightly adsorbed on the cooling roller 23, so that the plastic agent is fully cooled on the cooling roller 23, thereby improving the shaping effect of the finally shaped plastic film. In addition, since the cooling roller 23 continuously rotates, the above operation can effectively reduce the possibility of the plastic agent falling into the cooling roller 23 and being thrown out of the cooling roller 23, effectively improve the rotating speed of the cooling roller 23, not only reduce the thickness of the plastic film, but also improve the production efficiency of the plastic film casting production equipment.

[0040] With reference to Figure 3 and Figure 4 The side wall of each air suction hole 51 is provided with a shaking groove 52 in the vertical direction, the inner wall of the shaking groove 52 is slidingly connected with a shaking ring 91 in the vertical direction, the inner wall of the shaking ring 91 is welded with a filter screen plate 9, and the side of the shaking ring 91 close to the corrugated pipe 13 is welded with a shaking spring 911, and the end of the shaking spring 911 away from the corrugated pipe 13 is welded to the inner wall of the shaking groove 52. When the air suction pump 11 works to generate suction, the shaking spring 911 is compressed, and when the air suction pump 11 stops working, the elastic force of the shaking spring 911 drives the shaking ring 91 to shake up and down, and the shaking ring 91 drives the filter screen plate 9 to move up and down, thereby effectively reducing the possibility of the filter screen plate 9 being blocked, and prolonging the service life of the filter screen plate 9.

[0041] With reference to Figure 2 and Figure 3, the suction pipe 4 comprises a positioning pipe 41, two abutting plates 42 and two telescopic plates 43, the positioning pipe 41 is fixed to the corrugated pipe 13 by glue, one end of the positioning pipe 41 is welded with one of the abutting plates 42, and the other end of the positioning pipe 41 is welded with the other abutting plate 42. One of the telescopic plates 43 is located at one side of the positioning pipe 41 in the width direction, and the other telescopic plate 43 is located at the other side of the positioning pipe 41 in the width direction, and the side of the telescopic plate 43 close to the abutting plate 42 abuts; the side of the two abutting plates 42 away from the positioning pipe 41 is welded to the side of the connecting plate 5 away from the cooling roller 23, and the side of the two telescopic plates 43 away from the positioning pipe 41 is installed to the side of the connecting plate 5 away from the cooling roller 23.

[0042] With reference to Figure 2 , the two telescopic plates 43 each comprise a first movable plate 431, a second movable plate 432, a butt joint rod 433, a third movable plate 434, a fourth movable plate 435, a telescopic piece 436 and a linkage piece 437, the telescopic piece 436 comprises a telescopic rod 4361 and a rotating pipe 4362, the linkage piece 437 comprises a linkage rod 4371 and a fixed pipe 4372, the first movable plate 431 is rotationally connected to the side of the positioning pipe 41 away from the corrugated pipe 13, the second movable plate 432 is rotationally connected to the side of the first movable plate 431 away from the positioning pipe 41, the side of the second movable plate 432 away from the first movable plate 431 is rotationally connected to the side wall of the butt joint rod 433, the third movable plate 434 is rotationally connected to the side of the butt joint rod 433 away from the second movable plate 432, the fourth movable plate 435 is rotationally connected to the side of the third movable plate 434 away from the butt joint rod 433, and the side of the fourth movable plate 435 away from the third movable plate 434 is rotationally connected to the side of the connecting plate 5 away from the cooling roller 23. The telescopic rod 4361 is welded to the side of the positioning pipe 41 close to the cooling roller 23, the rotating pipe 4362 is rotationally connected to the side wall of the telescopic rod 4361, the rotating pipe 4362 is rotationally connected to the side wall of the butt joint rod 433 through a bearing seat, the linkage rod 4371 is welded to the side wall of the butt joint rod 433, the fixed pipe 4372 is slidingly connected to the side wall of the linkage rod 4371, and the fixed pipe 4372 is welded to the side of the connecting plate 5 away from the cooling roller 23.

[0043] With reference to Figure 2 , so that the staff rotates the rotating pipe 4362, the rotating pipe 4362 drives the telescopic rod 4361 to move in the vertical direction, at this time the butt joint rod 433 synchronously moves in the vertical direction, the butt joint rod 433 drives the linkage rod 4371 to synchronously move in the vertical direction inside the fixed pipe 4372; thereby effectively adjusting the angle between the first movable plate 431 and the second movable plate 432, the angle between the third movable plate 434 and the fourth movable plate 435, effectively adjusting the flow path of the gas in the suction pipe 4, and further adjusting the suction amount of the suction pipe 4.

[0044] With reference to Figure 3 , the side of the two abutting plates 42 close to each other is glued with a sealing gasket 8, which can be made of rubber, so as to improve the sealing of the first movable plate 431, the second movable plate 432, the third movable plate 434 and the fourth movable plate 435 abutting against the side wall of the abutting plate 42 through the sealing gasket 8, thereby improving the sealing when the gas in the air duct 4 flows.

[0045] With reference to Figure 2 , the side wall of the rack 21 is provided with a sliding groove 211, the inner wall of the sliding groove 211 is connected with a driving motor 213 through bolts, the output end of the driving motor 213 is connected with a driving lead screw 214, the side wall of the driving lead screw 214 is threadedly connected with a sliding block 212, the sliding block 212 is slidingly connected to the inner wall of the sliding groove 211, and the sliding block 212 is installed on the side wall of the positioning pipe 41. In order to drive the driving motor 213 by the staff, the driving motor 213 drives the driving lead screw 214 to rotate, the driving lead screw 214 drives the sliding block 212 to move in the vertical direction, and the sliding block 212 drives the positioning pipe 41 to move in the vertical direction, so that the air duct 4 moves in the vertical direction, thereby adjusting the distance between the connecting plate 5 and the cooling roller 23, and effectively adjusting the reverse adsorption force of the air duct 4 to the flow direction of the plastic agent.

[0046] With reference to Figure 2 and Figure 5 , the side wall of the sliding block 212 is welded with a mounting plate 6, the mounting plate 6 is provided with an adjusting part 7, the adjusting part 7 includes an adjusting motor 71 and an adjusting lead screw 72, the side wall of the mounting plate 6 is provided with an adjusting groove 62, the adjusting motor 71 is connected to the inner wall of the adjusting groove 62 through bolts, the output end of the adjusting motor 71 is connected to the adjusting lead screw 72, the adjusting lead screw 72 is rotationally connected to the inner wall of the adjusting groove 62, and the side wall of the adjusting lead screw 72 is threadedly connected with an adjusting rod 73, which is slidingly connected to the inner wall of the adjusting groove 62. The side wall of the adjusting rod 73 is rotationally connected with a first connecting rod 61, one end of the first connecting rod 61 away from the adjusting rod 73 is rotationally connected to the side wall of the positioning pipe 41, and the side wall of the first connecting rod 61 is rotationally connected with a second connecting rod 611, one end of the second connecting rod 611 away from the first connecting rod 61 is rotationally connected to the side wall of the sliding block 212. In order to start the adjusting motor 71 by the staff, the adjusting motor 71 drives the adjusting lead screw 72 to rotate, the adjusting lead screw 72 drives the adjusting rod 73 to move in the vertical direction, so that the first connecting rod 61 rotates, the first connecting rod 61 drives the second connecting rod 611 to rotate, thereby adjusting the angle of the air duct 4 relative to the rack 21, and further adjusting the reverse adsorption force of the air duct 4 to the flow direction of the plastic agent.

[0047] With reference to Figure 5The two ends of the adjusting rod 73 are provided with stable holes 731, the inner walls of the stable holes 731 are slidably connected with stable rods 63, the side wall of the adjusting rod 73 is rotatably connected with a third connecting rod 64, one end of the third connecting rod 64 away from the adjusting rod 73 is rotatably connected with the side wall of the positioning pipe 41, the side wall of the third connecting rod 64 is rotatably connected with a fourth connecting rod 641, and one end of the fourth connecting rod 641 away from the third connecting rod 64 is rotatably connected with the side wall of the sliding block 212, thereby improving the stability of the connection between the first connecting rod 61 and the positioning pipe 41.

[0048] With reference to Figure 1 The winding mechanism 3 comprises a thickness gauge 31, a swing frame 32 and a winding machine 33 arranged in sequence in the horizontal direction, the thickness gauge 31 is located on the side of the casting machine 24 away from the cooling roller 23, so as to detect the thickness of the prepared plastic film through the thickness gauge 31, then tension through the swing frame 32, and finally wind the prepared film through the winding machine 33.

[0049] The implementation principle of the plastic film casting production equipment is as follows: after the plastic agent body is extruded from the extrusion die head of the extruder 1, the air suction pump 11 reversely adsorbs the flow direction of the plastic agent body through the adsorption force of the negative pressure box 12 and the air suction pipe 4 in sequence while the plastic agent body falls on the cooling roller 23, so that the plastic agent body extruded from the extrusion die head of the extruder 1 is tightly adsorbed on the cooling roller 23, so that the plastic film is formed on the cooling roller 23, the plastic film is rotated by the rotating roller of the casting machine 24, so that the plastic film is cooled and shaped, the plastic film on the casting machine 24 is detected by the thickness gauge 31, and finally the prepared plastic film is wound through the swing frame 32 and the winding machine 33 in sequence. The above operation reduces the possibility of the plastic agent body being thrown off the cooling roller 23 when falling on the cooling roller 23, effectively improves the rotating speed of the cooling roller 23, not only reduces the thickness of the plastic film, but also improves the production efficiency of the plastic film casting production equipment.

[0050] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A plastic film casting production equipment, comprising an extruder (1), a cooling mechanism (2), and a winding mechanism (3) arranged sequentially in a horizontal direction, wherein the cooling mechanism (2) comprises a frame (21), a cooling motor (22), a cooling roller (23), and a casting machine (24), wherein the cooling roller (23) is rotatably connected to the frame (21) and is located below the outlet of the extrusion die of the extruder (1), the cooling motor (22) is disposed on the side wall of the frame (21), and the output end of the cooling motor (22) is connected to the cooling roller (23), and the casting machine (24) is disposed on the frame (21), characterized in that: An air pump (11) is provided on the side wall of the extruder (1). The air pump (11) is connected to a negative pressure box (12) at the air extraction end. The negative pressure box (12) is located on the side wall of the extruder (1). A corrugated pipe (13) is provided on the side of the negative pressure box (12) near the cooling roller (23). An exhaust pipe (4) is provided at the end of the corrugated pipe (13) away from the negative pressure box (12). A connecting plate (5) is provided at the end of the exhaust pipe (4) away from the corrugated pipe (13). The connecting plate (5) is located above the cooling roller (23). A plurality of exhaust holes (51) are evenly opened on the side wall of the connecting plate (5). The winding mechanism (3) includes a thickness gauge (31), a swing frame (32) and a winding machine (33) arranged sequentially in the horizontal direction. The thickness gauge (31) is located on the side of the casting machine (24) away from the cooling roller (23) so that the thickness of the plastic film produced can be detected by the thickness gauge (31). The side wall of the exhaust pipe (4) is provided with a sliding block (212), and the side wall of the frame (21) is provided with a sliding groove (211) for the sliding block (212) to slide along the vertical direction. The end wall of the sliding groove (211) is provided with a drive motor (213), and the output end of the drive motor (213) is connected to a drive screw (214). The drive screw (214) is rotatably connected to the inner wall of the sliding groove (211), and the sliding block (212) is threadedly connected to the side wall of the drive screw (214). The sliding block (212) has an installation plate (6) on its end wall. The installation plate (6) has an adjustment groove (62) on the side near the exhaust pipe (4) in the vertical direction. An adjustment rod (73) is slidably connected to the inner wall of the adjustment groove (62). A first connecting rod (61) is rotatably connected to the side wall of the adjustment rod (73). The end of the first connecting rod (61) away from the adjustment rod (73) is rotatably connected to the side wall of the exhaust pipe (4). A second connecting rod (611) is rotatably connected to the side wall of the first connecting rod (61). The end of the second connecting rod (611) away from the first connecting rod (61) is rotatably connected to the side wall of the sliding block (212). An adjustment component (7) is provided on the installation plate (6) to drive the adjustment rod (73) to move in the vertical direction.

2. The plastic film casting production equipment according to claim 1, characterized in that: The adjusting component (7) includes an adjusting motor (71) and an adjusting screw (72). The adjusting motor (71) is disposed on the inner wall of the adjusting groove (62). The output end of the adjusting motor (71) is connected to the adjusting screw (72). The adjusting rod (73) is threadedly connected to the side wall of the adjusting screw (72).

3. The plastic film casting production equipment according to claim 1, characterized in that: The exhaust pipe (4) includes a positioning pipe (41), two abutment plates (42) and two telescopic plates (43). The positioning pipe (41) is located at one end of the corrugated pipe (13) away from the negative pressure box (12). One abutment plate (42) is located at one end of the positioning pipe (41) along its length, and the other abutment plate (42) is located at the other end of the positioning pipe (41) along its length. One telescopic plate (43) is located at one end of the positioning pipe (41) along its width, and the other telescopic plate (43) is located at the other end of the positioning pipe (41) along its width. The telescopic plate (43) abuts against the side wall of the abutment plate (42). The end of the first connecting rod (61) away from the adjusting rod (73) is rotatably connected to the side wall of the positioning pipe (41).

4. The plastic film casting production equipment according to claim 3, characterized in that: The telescopic plate (43) includes a first movable plate (431), a second movable plate (432), a connecting rod (433), a third movable plate (434), a fourth movable plate (435), a telescopic component (436), and a linkage component (437). The first movable plate (431) is rotatably connected to the side of the positioning tube (41) away from the corrugated pipe (13). The second movable plate (432) is rotatably connected to the side of the first movable plate (431) away from the positioning tube (41). The connecting rod (433) is rotatably connected to the side of the second movable plate (432) away from the first movable plate (431). The third movable plate (434) is rotatably connected to the side of the connecting rod (433) away from the second movable plate (13). On one side of the movable plate (432), the fourth movable plate (435) is rotatably connected to the side of the third movable plate (434) away from the docking rod (433), and the side of the fourth movable plate (435) away from the third movable plate (434) is rotatably connected to the side of the connecting plate (5) away from the cooling roller (23). The telescopic member (436) is disposed between the positioning tube (41) and the docking rod (433) to adjust the angle between the first movable plate (431) and the second movable plate (432). The linkage member (437) is disposed between the docking rod (433) and the connecting plate (5) to adjust the angle between the third movable plate (434) and the fourth movable plate (435).

5. The plastic film casting production equipment according to claim 4, characterized in that: The telescopic component (436) includes a telescopic rod (4361) and a rotating tube (4362). The telescopic rod (4361) is located on the side of the positioning tube (41) away from the corrugated tube (13). The rotating tube (4362) is threaded to the side wall of the telescopic rod (4361) and rotatably connected to the side wall of the docking rod (433). The linkage component (437) includes a linkage rod (4371) and a fixed tube (4372). The linkage rod (4371) is slidably connected to the inner wall of the fixed tube (4372). The linkage rod (4371) is located on the side of the docking rod (433) away from the positioning tube (41). The fixed tube (4372) is located on the side of the connecting plate (5) close to the positioning tube (41).

6. The plastic film casting production equipment according to claim 3, characterized in that: Both of the two abutment plates (42) are provided with sealing gaskets (8) on the side that is close to each other.

7. The plastic film casting production equipment according to claim 1, characterized in that: Each of the aforementioned exhaust holes (51) has a filter screen (9) installed on its inner wall.

8. The plastic film casting production equipment according to claim 7, characterized in that: Each of the filter screens (9) is provided with a shaking ring (91) on its peripheral wall, and each of the exhaust holes (51) is provided with a shaking groove (52) on its side wall for the shaking ring (91) to slide in the vertical direction. A shaking spring (911) is provided on the side of the shaking ring (91) near the bellows (13), and the end of the shaking spring (911) away from the shaking ring (91) is provided on the inner wall of the shaking groove (52).

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