An automatic unloading and tube-threading device for a film casting machine

Abstract

This utility model discloses an automatic unloading and tube-threading device for a film casting machine, relating to the field of film production technology. It includes a bottom frame, which is positioned at the material handling area on one side of the casting machine. A protective baffle is fixedly connected to the side of the bottom frame away from the casting machine. Horizontal slide rails are fixedly connected to both sides of the upper end of the bottom frame, and a sliding platform is slidably connected between the two horizontal slide rails. A lifting component for supporting the air shaft is provided at one end of the bottom frame and one end of the sliding platform. This utility model, through the provided moving component, V-shaped receiving plate, and flipping component, can complete the unloading operation during operation. Then, a feeding component transfers multiple paper tubes to the V-shaped receiving plate. After the transfer is completed, the moving component and lifting component are used to thread the multiple paper tubes onto the air shaft to complete the paper tube feeding operation. This achieves automation of film roll unloading and paper tube threading, greatly reducing the labor intensity of workers and effectively improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of thin film production technology, specifically an automatic unloading and tube-threading device for a film casting machine. Background Technology

[0002] As a key piece of equipment for producing films or sheets, the casting machine's workflow encompasses multiple stages, including melting and plasticizing raw materials in an extruder, extruding the film through a casting die, cooling and shaping, and winding. The equipment mainly consists of four core parts: extrusion, casting, winding, and electrical control. The extrusion section is responsible for fully melting and plasticizing the raw materials; the casting section achieves film formation; the winding section ensures the finished product is neat and orderly; and the electrical control system precisely regulates each stage, ensuring stable and efficient production. Due to these characteristics, casting machines are widely used in many production fields such as plastic products, electronic ceramics, lithium batteries, and film materials, providing indispensable basic material support for the development of various industries.

[0003] In the actual operation of a film casting machine, after film forming, a slitting operation is required. After completion, the wound film roll needs to be unloaded and a new paper tube replaced to achieve continuous winding production. Although existing unloading mechanisms can achieve automatic unloading, the feeding stage still relies on manual insertion of the paper tube onto the air shaft. This manual feeding method is not only cumbersome but also inconvenient, especially when multiple paper tubes need to be inserted simultaneously. The unloading and insertion operations become particularly complex, consuming a lot of manpower and time, and reducing production efficiency, making it difficult to meet the needs of modern high-efficiency production. Based on this, to address the above problems, we provide an automatic unloading and insertion device for film casting machines to solve the aforementioned technical difficulties and improve the automation level and production efficiency of the casting machine. Utility Model Content

[0004] The purpose of this invention is to provide an automatic unloading and tube-threading device for film casting machines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An automatic unloading and tube-threading device for a film casting machine includes a bottom frame, which is installed at the material pick-up and drop-off position on one side of the casting machine. A protective baffle is fixedly connected to the side of the bottom frame away from the casting machine. Horizontal slide rails are fixedly connected to both sides of the upper end of the bottom frame. A sliding platform is slidably connected between the two horizontal slide rails. A lifting component for lifting the air expansion shaft is provided at one end of the bottom frame and one end of the sliding platform.

[0007] The upper surface of the sliding platform is fixedly connected to several connecting seats, and a rotating shaft is installed between the connecting seats. Several adapter seats are rotatably connected to the rotating shaft, and a V-shaped receiving plate is fixedly connected between the upper ends of the adapter seats. The sliding platform is provided with a flipping component for driving the V-shaped receiving plate to flip. One end of the bottom frame is also provided with a moving component for driving the sliding platform to slide on a horizontal slide rail. One side of one end of the bottom frame is fixedly connected to a feeding platform, and side baffles are fixedly connected to both sides of the feeding platform. The feeding platform is provided with a feeding component for adding paper tubes to the V-shaped receiving plate. The other side of one end of the bottom frame is provided with a receiving platform for receiving materials.

[0008] As a further embodiment of this utility model: the lifting assembly includes a first lifting module, which is fixedly connected to the end of the bottom frame away from the loading platform. A first limiting slide rod is fixedly connected to one side of the first lifting module, and a first lifting slide is slidably connected to the first limiting slide rod. The lifting action end of the first lifting module is fixedly connected to the first lifting slide. A card holder is fixedly connected to the first lifting slide. The card holder is provided with an inflation / deflation mechanism for inflating and deflating the air shaft. A second lifting module is fixedly connected to one end of the sliding platform. The second lifting module is provided with a shaft support assembly that cooperates with the card holder.

[0009] As a further embodiment of this utility model: the shaft support assembly includes a second limiting slide rod, which is fixedly connected to one side of the second lifting module. A second lifting slide is slidably connected to the second limiting slide rod. The lifting action end of the second lifting module is fixedly connected to the second lifting slide. Two fixed side blocks are fixedly connected to the end of the second lifting slide. Each fixed side block has a connecting vertical groove. A vertical slide rod is fixedly connected inside each connecting vertical groove. A wheel rod is slidably connected between the two vertical slide rods. A spring passes through the vertical slide rod at the position between the wheel rod and the lower end of the fixed side block. A shaft support wheel is rotatably connected to the wheel rod at the position between the two fixed side blocks.

[0010] As a further embodiment of this utility model: the flipping assembly includes a plurality of second cylinders, the second cylinders being rotatably connected to the lower end of one side of the sliding table via an adapter, and the output end of the second cylinders being rotatably connected to one side of the V-shaped receiving plate.

[0011] As a further embodiment of this utility model: the moving component includes two synchronous pulleys, which are rotatably connected to the end of the bottom frame away from the casting machine and the middle of the bottom frame, respectively. A synchronous belt is installed between the two synchronous pulleys. A drive block is fixedly connected to the upper surface of the synchronous belt. The upper end of the drive block is fixedly connected to the sliding table. A servo motor is also installed at the end of the bottom frame away from the casting machine. The output end of the servo motor is fixedly connected to the axle of the synchronous pulley.

[0012] As a further improvement of this utility model, the bottom frame is provided with several tensioning rollers located below the synchronous belt.

[0013] As a further embodiment of this utility model: the feeding assembly includes a baffle plate, which is fixedly connected to one end of the side baffle plate near the bottom frame. A pusher plate is provided in the gap between the baffle plate and the feeding platform. Lifting arms are fixedly connected to both ends of the lower end face of the pusher plate. The feeding platform is provided with a lifting assembly for driving the lifting arms to lift.

[0014] As a further embodiment of this utility model: the lifting assembly includes an avoidance vertical groove, which is opened at both ends of the loading platform near the bottom frame. A vertical slide rail is fixedly connected inside the loading platform near the avoidance vertical groove. A lifting slide plate is slidably connected on the vertical slide rail. The upper end of the lifting slide plate is fixedly connected to the lifting arm and the lower end is fixedly connected to the lifting arm. A first cylinder is fixedly connected to the loading platform below the lifting arm. The output end of the first cylinder is fixedly connected to the lifting slide plate.

[0015] As a further improvement of this utility model: the upper platform of the loading platform and the upper surface of the push tube plate are both inclined surfaces, and the side of the upper platform of the loading platform away from the bottom frame is higher than the side close to the bottom frame.

[0016] As a further improvement of this utility model: one end of the V-shaped receiving plate is fixedly connected to a limit stop strip, and the other end of the V-shaped receiving plate is provided with a limit stop block.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] This invention, through its movable component, V-shaped receiving plate, and flipping component, enables unloading during operation. The completed film roll is unloaded from the air shaft and transferred to the receiving table. The flipping component then transfers the film roll to the receiving table for unloading. Next, the feeding component transfers multiple paper tubes to the V-shaped receiving plate. After the transfer, the movable component and lifting component thread the paper tubes onto the air shaft for feeding. This automates the unloading of the film roll and the threading of the paper tubes, significantly reducing the labor intensity of workers and effectively improving production efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partial structural schematic diagram of the present invention.

[0021] Figure 3 This is a schematic diagram of the flipping component in this utility model.

[0022] Figure 4 This is a schematic diagram of the bottom structure of the sliding stage in this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the second lifting slide in this utility model.

[0024] Figure 6 This is a schematic diagram of the structure of the first lifting slide in this utility model.

[0025] Figure 7 This is a schematic diagram of the structure of the movable component in this utility model.

[0026] Figure 8 This is a schematic diagram of the feeding assembly in this utility model.

[0027] Figure 9 This is a schematic diagram of the bottom structure of the loading platform in this utility model.

[0028] Figure 10 This is a schematic diagram of the pusher plate in this utility model.

[0029] The components include: 1. Casting machine; 2. Loading platform; 3. Receiving platform; 4. Protective baffle; 5. First lifting module; 6. Air shaft; 7. V-shaped receiving plate; 8. Inflation / deflation mechanism; 9. First lifting slide; 10. First limit slide bar; 11. Bottom frame; 12. Horizontal slide rail; 13. Push tube plate; 14. First cylinder; 15. Lifting arm; 16. Baffle plate; 17. Side baffle; 18. Second cylinder; 19. Sliding table; 20. Second lifting module; 21. Second... 21. Limiting slide bar; 22. Supporting roller; 23. Second lifting slide; 24. Connecting seat; 25. Rotary shaft; 26. Adapter seat; 27. Vertical slide bar; 28. Spring; 29. ​​Connecting vertical groove; 30. Fixed side block; 31. Wheel rod; 32. Synchronous belt pulley; 33. Tensioning pulley; 34. Servo motor; 35. Drive block; 36. Synchronous belt; 37. Card holder; 38. Vertical slide rail; 39. Lifting slide plate; 40. Avoidance vertical groove; 41. Limiting stop bar; 42. Limiting block. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1-10In this embodiment of the present invention, an automatic unloading and tube-threading device for a film casting machine includes a bottom frame 11. The bottom frame 11 is located at the material loading / unloading position on one side of the casting machine 1. A protective baffle 4 is fixedly connected to the side of the bottom frame 11 away from the casting machine 1. Horizontal slide rails 12 are fixedly connected to both sides of the upper end of the bottom frame 11. A sliding platform 19 is slidably connected between the two horizontal slide rails 12. A lifting assembly for lifting the air expansion shaft 6 is provided at one end of the bottom frame 11 and one end of the sliding platform 19. The lifting assembly includes a first lifting module 5, which is fixedly connected to the end of the bottom frame 11 away from the loading platform 2. A first limiting slide rod 10 is fixedly connected to one side of the first lifting module 5. A sliding connection is slidably connected to the first limiting slide rod 10. The system includes a first lifting slide 9, with the lifting action end of the first lifting module 5 fixedly connected to the first lifting slide 9. A card holder 37 is fixedly connected to the first lifting slide 9, and the card holder 37 is equipped with an inflation / deflation mechanism 8 for inflating and deflating the air shaft 6. One end of the sliding table 19 is fixedly connected to a second lifting module 20, and the second lifting module 20 is equipped with a shaft support assembly that cooperates with the card holder 37. The first lifting module 5 can drive the first lifting slide 9 to rise and fall. The rising and falling of the first lifting slide 9, in cooperation with the second lifting module 20, can realize the rising and falling operation of the air shaft 6. At the same time, the inflation / deflation mechanism 8 can inflate or deflate the air shaft 6 during use, thereby realizing the fixing and loosening of the paper tube.

[0032] The bearing assembly includes a second limiting slide rod 21, which is fixedly connected to one side of the second lifting module 20. A second lifting slide 23 is slidably connected to the second limiting slide rod 21. The lifting action end of the second lifting module 20 is fixedly connected to the second lifting slide 23. Two fixed side blocks 30 are fixedly connected to the end of the second lifting slide 23. Each fixed side block 30 has a connecting vertical groove 29. A vertical slide rod 27 is fixedly connected inside each connecting vertical groove 29. A wheel rod 31 is slidably connected between the two vertical slide rods 27. The vertical slide rod 27 is located between the wheel rod 31 and... A spring 28 is inserted between the lower ends of the fixed side blocks 30. The wheel rod 31 is rotatably connected to the support wheel 22 between the two fixed side blocks 30. The second lifting module 20 can drive the second lifting slide 23 to move up and down. The up and down movement of the second lifting slide 23 can drive the support wheel 22 to move up and down accordingly to adapt to the lifting of the air shaft 6. At the same time, the support wheel 22 allows the air shaft 6 to move on the support wheel 22, which facilitates subsequent pipe insertion and unloading. The spring 28 can also give the support wheel 22 a certain amount of collapse to adapt to the stepped part of the air shaft 6.

[0033] The upper surface of the sliding table 19 is fixedly connected to several connecting seats 24, and a rotating shaft 25 is installed between the connecting seats 24. Several adapter seats 26 are rotatably connected to the rotating shaft 25, and a V-shaped receiving plate 7 is fixedly connected between the upper ends of the adapter seats 26. The sliding table 19 is provided with a flipping assembly for driving the V-shaped receiving plate 7 to flip. The flipping assembly includes multiple second cylinders 18. The second cylinders 18 are rotatably connected to the lower end of one side of the sliding table 19 via adapter seats. The output end of the second cylinder 18 is rotatably connected to one side of the V-shaped receiving plate 7. When it is necessary to unload the wound film roll from the V-shaped receiving plate 7, the output end of the second cylinder 18 pushes the V-shaped receiving plate 7 to flip around the rotating shaft 25, thereby flipping the film roll on the V-shaped receiving plate 7 onto the receiving table 3, thus completing the unloading operation.

[0034] One end of the bottom frame 11 is also provided with a moving component for driving the sliding table 19 to slide on the horizontal slide rail 12. The moving component includes two synchronous pulleys 32, which are respectively rotatably connected to the end of the bottom frame 11 away from the casting machine 1 and the middle of the bottom frame 11. A synchronous belt 36 is installed between the two synchronous pulleys 32. A drive block 35 is fixedly connected to the upper surface of the synchronous belt 36. The upper end of the drive block 35 is fixedly connected to the sliding table 19. The end of the bottom frame 11 away from the casting machine 1 is also provided with a moving component. A servo motor 34 is provided, and the output end of the servo motor 34 is fixedly connected to the axle of the synchronous belt pulley 32. The bottom frame 11 is provided with several tensioning pulleys 33 located below the synchronous belt 36. When the sliding table 19 is moved, the servo motor 34 drives the synchronous belt pulley 32 to rotate. The rotation of the synchronous belt pulley 32 drives the synchronous belt 36 to rotate. The rotation of the synchronous belt 36 can drive the drive block 35 to move. The movement of the drive block 35 can drive the sliding table 19 to move along the horizontal slide rail 12, thereby realizing the position change of the sliding table 19.

[0035] A loading platform 2 is fixedly connected to one side of one end of the bottom frame 11. Side baffles 17 are fixedly connected to both sides of the loading platform 2. The loading platform 2 is equipped with a loading assembly for adding paper tubes to the V-shaped receiving plate. A receiving platform 3 for receiving materials is provided on the other side of one end of the bottom frame 11. The loading assembly includes a baffle plate 16, which is fixedly connected to the side baffle 17 near the bottom frame 11. A pusher plate 13 is provided in the gap between the baffle plate 16 and the loading platform 2. Lifting arms 15 are fixedly connected to both ends of the lower end face of the pusher plate 13. The interior of the loading platform 2... A lifting assembly is provided for driving the lifting arm 15 to move up and down; the upper platform of the loading platform 2 and the upper surface of the push plate 13 are both inclined, and the side of the upper platform of the loading platform 2 away from the bottom frame 11 is higher than the side close to the bottom frame 11; when loading, the required paper tubes are first placed on the loading platform 2 as required, and then the lifting assembly drives the lifting arm 15 to rise, the lifting arm 15 drives the push plate 13 to rise, and the rise of the push plate 13 can push a set of paper tubes upward. When the height of the paper tube exceeds the stop plate 16, the paper tube rolls onto the V-shaped receiving plate 7 under the action of the inclined surface to complete the loading of the paper tube.

[0036] The lifting assembly includes a avoidance vertical groove 40, which is located at both ends of the loading platform 2 near the bottom frame 11. A vertical slide rail 38 is fixedly connected inside the loading platform 2 near the avoidance vertical groove 40. A lifting slide plate 39 is slidably connected to each vertical slide rail 38. The upper end and lower end of the lifting slide plate 39 are fixedly connected to the lifting arm 15. A first cylinder 14 is fixedly connected to the loading platform 2 below the lifting arm 15, and the output end of the first cylinder 14 is fixedly connected to the lifting slide plate 39. When the lifting arm 15 is driven to lift, the first cylinder 14 drives the lifting slide plate 39 to move. The vertical slide rail 38 is used to limit the movement of the lifting slide plate 39, ensuring smooth sliding. The movement of the lifting slide plate 39 can drive the lifting arm 15 to perform corresponding lifting movements.

[0037] One end of the V-shaped receiving plate 7 is fixedly connected to a limiting strip 41, and the other end of the V-shaped receiving plate 7 is provided with a limiting block 42. The limiting strip 41 and the limiting block 42 can limit the paper tube and prevent the paper tube from running out of position during the tube insertion process.

[0038] The working principle of this utility model is as follows: During operation, the unloading mechanism of the casting machine 1 unloads the wound film roll and places it in the V-shaped receiving plate 7. Then, the first lifting module 5 drives the card holder 37 to rise, so that the card holder 37 is locked at one end of the air expansion shaft 6. Then, the inflation and deflation mechanism 8 deflates the air expansion shaft 6. After deflation, the servo motor 34 drives the synchronous pulley 32 to rotate. The rotation of the synchronous pulley 32 drives the synchronous belt 36 to run. The rotation of the synchronous belt 36 can drive the drive block 35 to move. The drive block 35 drives the sliding table 19 to move towards the receiving table 3. At the same time, the second lifting module 20 drives the second lifting slide 23 to rise, so that the support roller 22 lifts the suspended end of the air expansion shaft 6. When the sliding table 19 runs between the loading table 2 and the receiving table 3, the output end of the second cylinder 18 is activated to push the V-shaped receiving plate 7 to rotate the shaft. The film roll on the V-shaped receiving plate 7 is flipped around the center 25 and then flipped onto the receiving table 3 to complete the unloading work. After unloading, the second cylinder 18 drives the V-shaped receiving plate 7 to reset, and then the first cylinder 14 drives the lifting slide plate 39 to move. The lifting slide plate 39 drives the lifting arm 15 to rise, and the lifting arm 15 drives the push plate 13 to rise. The push plate 13 can push a set of paper tubes upward. When the height of the paper tube exceeds the stop plate 16, the paper tube rolls onto the V-shaped receiving plate 7 under the action of the inclined plane to complete the feeding of the paper tube. Then the moving component drives the sliding table 19 to move towards the casting machine 1. At the same time, the air expansion shaft 6 will pass into the paper tube on the V-shaped receiving plate 7. After passing into place, the air inflation mechanism 8 inflates the air expansion shaft 6 to fix the paper tube for subsequent use by the casting machine 1, thus completing the automatic tube passing work.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Although this specification describes embodiments, not every embodiment contains only one technical solution. This method of description is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A film casting machine automatic unloading pipe penetrating device comprising a bottom frame (11), characterized in that; The bottom frame (11) is located at the material loading and unloading position on one side of the casting machine (1). A protective baffle (4) is fixedly connected to the side of the bottom frame (11) away from the casting machine (1). Horizontal slide rails (12) are fixedly connected to both sides of the upper end of the bottom frame (11). A sliding table (19) is slidably connected between the two horizontal slide rails (12). A lifting assembly for lifting the air shaft (6) is provided at one end of the bottom frame (11) and one end of the sliding table (19). The upper surface of the sliding table (19) is fixedly connected to several connecting seats (24), and a rotating shaft (25) is installed between the connecting seats (24). Several adapter seats (26) are rotatably connected to the rotating shaft (25). A V-shaped receiving plate (7) is fixedly connected between the upper ends of the adapter seats (26). The sliding table (19) is provided with a flipping component for driving the V-shaped receiving plate (7) to flip. One end of the bottom frame (11) is also provided with a moving component for driving the sliding table (19) to slide on the horizontal slide rail (12). One side of one end of the bottom frame (11) is fixedly connected to a feeding platform (2). Both sides of the feeding platform (2) are fixedly connected to side baffles (17). The feeding platform (2) is provided with a feeding component for adding paper tubes to the V-shaped receiving plate. The other side of one end of the bottom frame (11) is provided with a receiving platform (3) for receiving materials.

2. The automatic film casting machine unloading pipe penetrating device according to claim 1, characterized in that, The lifting assembly includes a first lifting module (5), which is fixedly connected to the end of the bottom frame (11) away from the loading platform (2). A first limiting slide rod (10) is fixedly connected to one side of the first lifting module (5). A first lifting slide (9) is slidably connected to the first limiting slide rod (10). The lifting action end of the first lifting module (5) is fixedly connected to the first lifting slide (9). A card holder (37) is fixedly connected to the first lifting slide (9). The card holder (37) is provided with an inflation / deflation mechanism (8) for inflating / deflation of the air shaft (6). A second lifting module (20) is fixedly connected to one end of the sliding platform (19). The second lifting module (20) is provided with a shaft support assembly that cooperates with the card holder (37).

3. The automatic unloading and tube-threading device for a film casting machine according to claim 2, characterized in that, The shaft support assembly includes a second limiting slide rod (21), which is fixedly connected to one side of the second lifting module (20). A second lifting slide (23) is slidably connected to the second limiting slide rod (21). The lifting action end of the second lifting module (20) is fixedly connected to the second lifting slide (23). Two fixed side blocks (30) are fixedly connected to the end of the second lifting slide (23). Each fixed side block (30) has a connecting vertical groove (29). A vertical slide rod (27) is fixedly connected inside each connecting vertical groove (29). A wheel rod (31) is slidably connected between the two vertical slide rods (27). A spring (28) passes through the vertical slide rod (27) at the position between the wheel rod (31) and the lower end of the fixed side block (30). A shaft support wheel (22) is rotatably connected to the wheel rod (31) at the position between the two fixed side blocks (30).

4. The automatic unloading and tube-threading device for a film casting machine according to claim 1, characterized in that, The flipping assembly includes multiple second cylinders (18), which are rotatably connected to the lower end of one side of the sliding table (19) via an adapter. The output end of the second cylinder (18) is rotatably connected to one side of the V-shaped receiving plate (7).

5. The automatic unloading and tube-threading device for a film casting machine according to claim 1, characterized in that, The moving component includes two synchronous pulleys (32), which are rotatably connected to the end of the bottom frame (11) away from the casting machine (1) and the middle of the bottom frame (11), respectively. A synchronous belt (36) is installed between the two synchronous pulleys (32), and a drive block (35) is fixedly connected to the upper surface of the synchronous belt (36). The upper end of the drive block (35) is fixedly connected to the sliding table (19). A servo motor (34) is also installed at the end of the bottom frame (11) away from the casting machine (1), and the output end of the servo motor (34) is fixedly connected to the wheel axle of the synchronous pulley (32).

6. The automatic unloading and tube-threading device for a film casting machine according to claim 5, characterized in that, The bottom frame (11) is provided with several tensioning rollers (33) located below the synchronous belt (36).

7. The automatic unloading and tube-threading device for a film casting machine according to claim 1, characterized in that, The feeding assembly includes a baffle plate (16), which is fixedly connected to one end of the side baffle (17) near the bottom frame (11). A pusher plate (13) is provided in the gap between the baffle plate (16) and the feeding platform (2). Lifting arms (15) are fixedly connected to both ends of the lower end face of the pusher plate (13). The feeding platform (2) is provided with a lifting assembly for driving the lifting arms (15) to lift.

8. The automatic unloading and tube-threading device for a film casting machine according to claim 7, characterized in that, The lifting assembly includes an avoidance groove (40), which is located at both ends of the loading platform (2) near the bottom frame (11). A vertical slide rail (38) is fixedly connected inside the loading platform (2) near the avoidance groove (40). A lifting slide plate (39) is slidably connected on the vertical slide rail (38). The upper end of the lifting slide plate (39) is fixedly connected to the lifting arm (15), and the lower end is fixedly connected to the lifting arm (15). A first cylinder (14) is fixedly connected to the loading platform (2) below the lifting arm (15). The output end of the first cylinder (14) is fixedly connected to the lifting slide plate (39).

9. The automatic unloading and tube-threading device for a film casting machine according to claim 1, characterized in that, The upper platform of the loading platform (2) and the upper surface of the push plate (13) are both inclined surfaces. The side of the upper platform of the loading platform (2) away from the bottom frame (11) is higher than the side close to the bottom frame (11).

10. An automatic unloading and tube-threading device for a film casting machine according to claim 1, characterized in that, One end of the V-shaped receiving plate (7) is fixedly connected to a limit stop (41), and the other end of the V-shaped receiving plate (7) is provided with a limit stop (42).

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