A leak-proof pre-coating film extrusion and laminating device

Abstract

The present invention relates to the field of pre-coating film extrusion technology, and in particular to a leak-proof pre-coating film extrusion composite device, comprising an assembly base, the top of which is fixedly connected to an operating table, and also comprising a retracting mechanism and a composite material convenient replacement mechanism, wherein a cutting component is arranged on a guide frame, and a coating component is arranged on the operating table. The leak-proof pre-coating film extrusion composite device of the present application cuts the composite material in use by a cutting component, and then pushes the U-shaped seat to push the new composite material to one side of the guide frame, and then the end of the composite material is bonded to the base film. After bonding, the base film drives the composite film to be transported, and then it is extruded through the extrusion end. After the extrusion is completed, it is reeled through the reeling end in the retracting mechanism, avoiding the problem of stopping the machine for replacing the composite material, thereby improving production efficiency and reducing production costs.

Description

Technical Field

[0001] The invention relates to the technical field of pre-coating film extrusion, in particular to a leakage-proof pre-coating film extrusion composite device. Background Art

[0002] The leak-proof pre-coating film extrusion laminating machine is an auxiliary device for pre-coating film extrusion laminating, which has been widely used in the field of pre-coating film production. In the existing pre-coating film extrusion laminating equipment, the operation process of the equipment involves multiple steps, including the extrusion and lamination of the composite film and the base film;

[0003] When different composite films need to be extruded and laminated with the base film, the operator must first remove the winding roller of the composite film in use, then replace it with a new composite film, and finally restart the equipment to continue production. This process is not only cumbersome but also time-consuming, especially in the case of emergency replacement or frequent switching of multiple film materials. In addition, during the shutdown and restart process, the equipment needs to be readjusted and preheated to the appropriate working state. This working method not only increases production costs, but may also affect the quality stability of the final product. Summary of the invention

[0004] In order to solve the technical problems raised in the background technology, the present invention provides a leakage-proof pre-coating film extrusion composite device.

[0005] To achieve the above-mentioned purpose, the present application proposes a leak-proof pre-coated film extrusion composite device, comprising an assembly base, the top of which is fixedly connected to an operating table, and also comprising a retractable mechanism and a composite material convenient replacement mechanism, wherein the retractable mechanism is installed on the top of the operating table and is located at both ends of the top of the operating table, and the composite material convenient replacement mechanism comprises a boss, a U-shaped seat, a rotating roller, a guide frame, a cutting assembly and a coating assembly, wherein the boss is symmetrically fixedly connected to both sides of the operating table, the U-shaped seat is provided with multiple groups, and is slidably clamped on the top of the boss through a clamping plate, a connecting arm is provided between two adjacent U-shaped seats, and is connected through the connecting arm, the rotating roller is rotatably connected to the inner wall of the U-shaped seat, the guide frame is fixedly connected to the top of the operating table and is located on one side of the U-shaped seat, the cutting assembly is arranged on the guide frame, and the coating assembly is arranged on the operating table.

[0006] The leak-proof pre-coated film extrusion composite device of the present application cuts the composite material in use through a cutting assembly, and then pushes the U-shaped seat to push the new composite material to one side of the guide frame, and then the end of the composite material is bonded to the base film. After bonding, the base film drives the composite film to be transported, and then it is extruded by the extrusion end. After the extrusion is completed, it is rolled up by the winding end in the retracting mechanism, thereby improving the convenience of replacing the composite material and avoiding the problem of stopping the machine for replacing the composite material, thereby improving production efficiency and reducing production costs.

[0007] In addition, the leak-proof pre-coating film extrusion composite device proposed in the present application may also have the following additional technical features:

[0008] As a preferred solution of the present invention, the cutting assembly includes a reinforcement sleeve, a support head, a cutting knife, a guide plate and a limit rod, wherein both ends of the limit rod are fixedly connected to the guide frame, the reinforcement sleeve is slidably sleeved on the limit rod, one end of the support head is fixedly connected to the outer wall of the reinforcement sleeve, one end of the cutting knife is fixedly connected to the other end of the support head, one end of the guide plate is fixedly connected to the outer wall of the reinforcement sleeve, and the other end of the guide plate is slidably engaged in the guide groove opened on the operating table.

[0009] As a preferred solution of the present invention, the coating assembly includes a supporting top plate, a coating bin, a coating roller and a supporting plate, wherein one end of the supporting top plate is fixedly connected to the top of one end of the retracting mechanism through the supporting plate, the other end of the supporting top plate is fixedly connected to the top of the operating table through a supporting arm, the coating bin is fixedly connected to the top of the supporting top plate, and both ends of the coating roller are rotatably connected to the inner wall of the coating bin.

[0010] As a preferred solution of the present invention, the retracting and releasing mechanism includes a first support frame, a second support frame, a support side plate, a retracting and releasing assembly and an extrusion assembly, wherein the first support frame and the second support frame are respectively fixedly connected to the two ends of the top of the operating table, and the retracting and releasing assembly includes a first driving motor and a driving roller, wherein the first driving motor is respectively mounted on the outer walls of the first support frame and the second support frame, the driving roller is respectively rotatably connected to the inner walls of the first support frame and the second support frame, and the end of the driving roller is fixedly connected to the output end of the first driving motor, the support side plate is symmetrically fixedly connected to the top of the operating table, and is located between the guide frame and the first support frame, and the extrusion assembly includes a second driving motor and an extrusion roller, wherein the second driving motor is mounted on the outer wall of the support side plate, the extrusion roller is rotatably connected to the inner wall of the support side plate, and the output end of the second driving motor is fixedly connected to the end of the extrusion roller.

[0011] As a preferred solution of the present invention, one end of the base film is sleeved on the driving roller on the inner wall of the second support frame, and the other end of the base film is rolled up on the driving roller on the inner wall of the first support frame.

[0012] As a preferred solution of the present invention, one end of different composite films is respectively sleeved on the plurality of rotating rollers, and the other end of the composite film is bonded and connected to one side of the base film via a guide rod on the guide frame.

[0013] As a preferred solution of the present invention, a connecting groove is provided on the top of the supporting top plate, and the end of the base film passes through the connecting groove.

[0014] As a preferred solution of the present invention, a coating pad is sleeved on the outer wall of the coating roller, and the bottom of the base film abuts against the outer wall of the coating roller.

[0015] As a preferred solution of the present invention, a limiting sleeve is symmetrically slidably sleeved on the guide rod, a limiting bolt is threadedly connected on the limiting sleeve, and screw holes matching the limiting bolts are evenly spaced on the guide rod.

[0016] As a preferred solution of the present invention, the bottom of the outer walls of the first support frame, the second support frame and the support side plate are all installed with fastening bolts, and the ends of the fastening bolts are screwed to the top of the operating table.

[0017] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the present invention, multiple groups of U-shaped seats are provided, and the base film and the composite film are mutually squeezed by two squeezing rollers. When a different composite film needs to be replaced, the composite film is cut by the cutting assembly, and then the U-shaped seat is pushed to continue to bond the different composite films to the base film, thereby ensuring the continuity of production, allowing different composite films to be quickly bonded and composited with the base film, and then the production line can seamlessly transition to different types of film materials. Rapid replacement reduces machine idle time, thereby significantly improving the overall production efficiency.

[0020] 2. In the present invention, a cutting assembly is provided, and the cutting knife, guide plate and limit rod in the cutting assembly can be used. When the composite film needs to be replaced, the cutting knife can be driven to move by sliding the reinforcement sleeve, thereby cutting the composite film. After the composite film is cut off, the composite film that needs to be replaced can be moved to one side of the guide frame, thereby ensuring the efficiency of replacing the composite film.

[0021] 3. In the present invention, a coating assembly is provided, and the coating chamber, coating roller and support plate in the coating assembly are utilized. By continuously winding up the base film, the bottom of the base film can be continuously coated with glue through the coating roller, so that the base film and the composite film can be conveniently bonded to each other, thereby improving production efficiency, and leakage of the glue can be avoided through the coating chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0023] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0024] Figure 3 It is a schematic diagram of the structure of the coating assembly of the present invention;

[0025] Figure 4 It is a partial structural schematic diagram of the retractable mechanism of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the guide frame of the present invention;

[0027] Figure 6 The structure of the present invention is schematically shown Figure 3 ;

[0028] Figure 7 For the present invention Figure 3 The enlarged structural diagram at A in the middle;

[0029] Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged structure at point B.

[0030] In the figure: 1, assembly base; 2, operating table; 21, guide groove; 22, support arm; 3, retractable mechanism; 31, first support frame; 32, second support frame; 33, support side plate; 34, retractable assembly; 341, first drive motor; 342, drive roller; 35, extrusion assembly; 351, second drive motor; 352, extrusion roller; 4, composite material convenient replacement mechanism; 41, boss; 42, U-shaped seat; 421, connecting arm; 42 2. Clamping plate; 43. Rotating roller; 44. Guide frame; 441. Guide rod; 442. Limiting sleeve; 45. Cutting assembly; 451. Reinforcement sleeve; 452. Support head; 453. Cutting knife; 454. Guide plate; 455. Limiting rod; 46. Coating assembly; 461. Support top plate; 4611. Connecting groove; 462. Coating bin; 463. Coating roller; 464. Support plate; 5. Base film; 6. Composite film; 7. Fastening bolts. DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limitations on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.

[0032] The following describes the leakage-proof pre-coating film extrusion and compounding device according to an embodiment of the present application in conjunction with the accompanying drawings.

[0033] A leak-proof pre-coated film extrusion and composite device provided in an embodiment of the present application can solve the problem that when different composite films 6 need to be extruded and composited with the base film 5, the operator must first remove the winding roller of the composite film 6 in use, and then replace it with a new composite film 6, and finally restart the equipment to continue production. This process is not only cumbersome but also time-consuming, especially in the case of emergency replacement or frequent switching of multiple film materials. In addition, during the shutdown and restart process, the equipment needs to be readjusted and preheated to the appropriate working state. This working method not only increases production costs, but may also affect the quality stability of the final product.

[0034] like Figures 1 to 8 As shown, the leak-proof pre-coated film extrusion composite device of the embodiment of the present application may include an assembly base 1, the top of which is fixedly connected to an operating table 2, and also includes a retracting mechanism 3 and a composite material convenient replacement mechanism 4.

[0035] The retracting and releasing mechanism 3 is installed on the top of the operating platform 2 and is located at two ends of the top of the operating platform 2 .

[0036] It should be noted that the retracting mechanism 3 described in this embodiment includes a reeling end, a feeding end and an extrusion end. The reeling end and the feeding end are respectively located at the top ends of the operating table 2, while the extrusion end is located between the reeling end and the feeding end.

[0037] The composite material convenient replacement mechanism 4 comprises a boss 41 , a U-shaped seat 42 , a rotating roller 43 , a guide frame 44 , a cutting assembly 45 and a coating assembly 46 .

[0038] The bosses 41 are symmetrically fixedly connected to two sides of the operating table 2 .

[0039] It should be noted that the upper surface of the boss 41 described in this embodiment is flush with the upper surface of the operating table 2 .

[0040] The U-shaped seats 42 are provided in multiple groups and are slidably clamped on the top of the boss 41 through the clamping plate 422 . A connecting arm 421 is provided between two adjacent U-shaped seats 42 and they are connected through the connecting arm 421 .

[0041] It should be noted that the end of the connecting arm 421 described in this embodiment is fixedly connected to a mounting plate, on which bolts are installed, so that the U-shaped seat 42 can be replaced by turning the bolts, and the top of the boss 41 and the operating table 2 are provided with a snap-in groove that matches the snap-in plate 422.

[0042] The rotating roller 43 is rotatably connected to the inner wall of the U-shaped seat 42 .

[0043] It should be noted that different materials are sleeved on the rotating rollers 43 on the multiple U-shaped seats 42 described in this embodiment.

[0044] The guide frame 44 is fixedly connected to the top of the operating platform 2 and is located on one side of the U-shaped seat 42 .

[0045] It should be noted that the guide frame 44 described in this embodiment is an L-shaped structure.

[0046] The cutting assembly 45 is disposed on the guide frame 44 , and the coating assembly 46 is disposed on the operating table 2 .

[0047] It should be noted that when the composite material needs to be replaced as described in this embodiment, the composite material can be cut by the cutting component 45, and then the U-shaped seat 42 can be pushed to replace different composite materials for extrusion composite processing, and the material can be coated with glue by the coating component 46 to avoid leakage of glue.

[0048] Specifically, in the process of pre-coating film production, because the boss 41 is symmetrically fixedly connected to both sides of the operating table 2, the U-shaped seat 42 is provided with multiple groups, and is slidably clamped on the top of the boss 41 through the clamping plate 422, a connecting arm 421 is provided between two adjacent U-shaped seats 42, and is connected through the connecting arm 421, the rotating roller 43 is rotatably connected to the inner wall of the U-shaped seat 42, the guide frame 44 is fixedly connected to the top of the operating table 2 and is located on one side of the U-shaped seat 42, the cutting assembly 45 is arranged on the guide frame 44, and the coating assembly 46 is arranged on the operating table 2. When it is necessary to replace the composite film, the coating assembly 46 is provided on the guide frame 44. When combining materials, the composite material in use is first cut by the cutting assembly 45, and then the U-shaped seat 42 is pushed to push the new composite material to one side of the guide frame 44, and then the end of the composite material is bonded to the base film. After bonding, the base film drives the composite film 6 to be transported, and then it is extruded by the extrusion end. After the extrusion is completed, it is rolled up by the winding end in the retracting mechanism 3, thereby improving the convenience of replacing the composite material and avoiding the problem of stopping the machine for replacing the composite material, thereby improving production efficiency and reducing production costs.

[0049] In order to clearly illustrate the above embodiment, in an example of the present application, Figures 1 to 8 As shown, the retracting mechanism 3 includes a first support frame 31, a second support frame 32, a support side plate 33, a retracting assembly 34 and an extrusion assembly 35, wherein the first support frame 31 and the second support frame 32 are respectively fixedly connected to the two ends of the top of the operating table 2, and the retracting assembly 34 includes a first driving motor 341 and a driving roller 342, wherein the first driving motor 341 is respectively installed on the outer walls of the first support frame 31 and the second support frame 32, the driving roller 342 is respectively rotatably connected to the inner walls of the first support frame 31 and the second support frame 32, and the end of the driving roller 342 is fixedly connected to the output end of the first driving motor 341, the supporting side plate 33 is symmetrically fixedly connected to the top of the operating table 2, and is located between the guide frame 44 and the first support frame 31, and the extrusion assembly 35 includes a second driving motor 351 and an extrusion roller 352, wherein the second driving motor 351 is installed on the outer wall of the supporting side plate 33, the extrusion roller 352 is rotatably connected to the inner wall of the supporting side plate 33, and the output end of the second driving motor 351 is fixedly connected to the end of the extrusion roller 352.

[0050] Furthermore, the driving roller 342 on the inner wall of the second support frame 32 is sleeved with one end of the base film 5, and the driving roller 342 on the inner wall of the first support frame 31 is rolled up with the other end of the base film 5. One end of different composite films 6 are respectively sleeved on the multiple rotating rollers 43, and the other end of the composite film 6 is bonded and connected to one side of the base film 5 through the guide rod 441 on the guide frame 44.

[0051] It should be noted that, in this embodiment, two groups of extrusion assemblies 35 are symmetrically arranged on the inner wall of each group of supporting side plates 33 , so that two extrusion rollers 352 can perform extrusion processing on the base film 5 and the composite film 6 .

[0052] Specifically, in order to improve the production efficiency of the pre-coated film, the first support frame 31 and the second support frame 32 are respectively fixedly connected to the two ends of the top of the operating table 2, the first drive motor 341 is respectively installed on the outer walls of the first support frame 31 and the second support frame 32, the drive roller 342 is respectively rotatably connected to the inner walls of the first support frame 31 and the second support frame 32, and the end of the drive roller 342 is fixedly connected to the output end of the first drive motor 341, the support side plate 33 is symmetrically fixedly connected to the top of the operating table 2, and is located between the guide frame 44 and the first support frame 31, the second drive motor 351 is installed on the outer wall of the support side plate 33, the squeezing roller 352 is rotatably connected to the inner wall of the support side plate 33, and the output end of the second drive motor 351 is fixedly connected to the end of the squeezing roller 352 The base film 5 is connected with a fixed connection, and then the end of the base film 5 is passed through the coating component 46, the guide frame 44 and the squeezing roller 352 in turn, and finally rolled up on the driving roller 342 in the first support frame 31. After the base film 5 passes through the coating component 46, glue can be applied to the bottom of the base film 5, and then one end of the composite film 6 can be bonded to the bottom of the base film 5 through the guide rod 441, and then the base film 5 can drive the composite film 6 to move synchronously, and then the base film 5 and the composite film 6 are squeezed against each other by the two squeezing rollers 352. When a different composite film 6 needs to be replaced, the composite film 6 is cut by the cutting component 45, and then the U-shaped seat 42 is pushed, so that the different composite films 6 and the base film 5 can continue to be bonded to each other, thereby ensuring the continuity of production.

[0053] Another beneficial effect of this embodiment is that by pushing the U-shaped seat 42, different composite films 6 can be quickly bonded and compounded with the base film 5, so that the production line can seamlessly transition to different types of film materials. Rapid replacement reduces machine idle time, thereby significantly improving overall production efficiency.

[0054] In one example of the present application, Figures 1 to 8 As shown, the cutting assembly 45 includes a reinforcement sleeve 451, a support head 452, a cutting knife 453, a guide plate 454 and a limiting rod 455, wherein both ends of the limiting rod 455 are fixedly connected to the guide frame 44, the reinforcement sleeve 451 is slidably sleeved on the limiting rod 455, one end of the support head 452 is fixedly connected to the outer wall of the reinforcement sleeve 451, one end of the cutting knife 453 is fixedly connected to the other end of the support head 452, one end of the guide plate 454 is fixedly connected to the outer wall of the reinforcement sleeve 451, and the other end of the guide plate 454 is slidably engaged in the guide groove 21 opened at the top of the operating table 2.

[0055] It should be noted that both sides of the cutting knife 453 described in this embodiment are cutting surfaces, and a limiting groove matching the guide plate 454 is provided on the top of the operating table 2.

[0056] Specifically, in order to quickly cut the composite film 6 and thus facilitate the replacement of the synchronous composite film 6, the two ends of the limit rod 455 are fixedly connected to the guide frame 44, the reinforcement sleeve 451 is slidably sleeved on the limit rod 455, one end of the support head 452 is fixedly connected to the outer wall of the reinforcement sleeve 451, one end of the cutting knife 453 is fixedly connected to the other end of the support head 452, one end of the guide plate 454 is fixedly connected to the outer wall of the reinforcement sleeve 451, and the other end of the guide plate 454 is slidably engaged in the guide groove 21 opened on the top of the operating table 2, and then when the composite film 6 needs to be replaced, the cutting knife 453 can be driven to move by sliding the reinforcement sleeve 451, so as to cut the composite film 6. After the composite film 6 is cut off, the composite film 6 that needs to be replaced can be moved to one side of the guide frame 44, thereby ensuring the efficiency of replacing the composite film 6.

[0057] Another beneficial effect of this embodiment is that by quickly cutting the composite film 6 with the cutting knife 453, the production line can quickly adapt to different production needs, such as sudden changes in demand or the need to switch to different composite film 6 specifications, which can be carried out quickly and effectively.

[0058] In one embodiment of the present application, Figures 1 to 8 As shown, the coating assembly 46 includes a supporting top plate 461, a coating bin 462, a coating roller 463 and a supporting plate 464, wherein one end of the supporting top plate 461 is fixedly connected to the top of one end of the retracting mechanism 3 through the supporting plate 464, the other end of the supporting top plate 461 is fixedly connected to the top of the operating table 2 through the supporting arm 22, the coating bin 462 is fixedly connected to the top of the supporting top plate 461, and both ends of the coating roller 463 are rotatably connected to the inner wall of the coating bin 462.

[0059] Furthermore, if Figure 1 As shown, a connecting groove 4611 is opened on the top of the supporting top plate 461 , the end of the base film 5 passes through the connecting groove 4611 , a coating pad is sleeved on the outer wall of the coating roller 463 , and the bottom of the base film 5 abuts against the outer wall of the coating roller 463 .

[0060] It should be noted that the inner top of the coating bin 462 described in this embodiment is fixedly connected to a resistance plate, and the bottom of the resistance plate is rotatably connected to a ball bearing. Therefore, when the base film 5 passes through the coating roller 463, multiple ball bearings can be used to ensure that the glue is coated on the bottom of the base film 5, and the base film 5 is transported through the connecting groove 4611.

[0061] Specifically, in order to conveniently apply glue to the bottom of the base film 5, one end of the support top plate 461 is fixedly connected to the top of one end of the retracting mechanism 3 through the support plate 464, and the other end of the support top plate 461 is fixedly connected to the top of the operating table 2 through the support arm 22. The coating bin 462 is fixedly connected to the top of the support top plate 461, and the two ends of the coating roller 463 are rotatably connected to the inner wall of the coating bin 462. Then, by continuously winding up the base film 5, the bottom of the base film 5 can be continuously coated with glue through the coating roller 463, so that the base film 5 can be conveniently bonded to the composite film 6, thereby improving production efficiency, and leakage of the glue can be avoided through the coating bin 462.

[0062] Another beneficial effect of this embodiment is that the coating roller 463 continuously applies glue to the base film 5, which can ensure that the glue is more evenly applied to the base film 5, and thus the coating is more even. The uniform glue layer helps to ensure the bonding strength and consistency of the composite film 6.

[0063] It should be understood that a limiting sleeve 442 is symmetrically slidably sleeved on the guide rod 441, a limiting bolt is threadedly connected to the limiting sleeve 442, screw holes matching the limiting bolts are evenly spaced on the guide rod 441, and the bottom of the outer walls of the first support frame 31, the second support frame 32 and the supporting side plate 33 are all installed with fastening bolts 7, and the ends of the fastening bolts 7 are screwed to the top of the operating table 2.

[0064] In summary, the leak-proof pre-coated film extrusion composite device of the embodiment of the present application cuts the composite material in use through the cutting component 45, and then pushes the U-shaped seat 42 to push the new composite material to one side of the guide frame 44, and then the end of the composite material is bonded to the base film. After bonding, the base film drives the composite film 6 for transportation, and then it is extruded by the extrusion end. After the extrusion is completed, it is wound up by the winding end in the retracting mechanism 3, thereby improving the convenience of replacing the composite material and avoiding the problem of stopping the machine for replacing the composite material, thereby improving production efficiency and reducing production costs.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leak-proof pre-coating film extrusion composite device, comprising an assembly base (1), the top of which is fixedly connected to an operating table (2), characterized in that: It also includes a retractable mechanism (3) and a composite material convenient replacement mechanism (4), wherein: The retractable mechanism (3) is installed on the top of the operating table (2) and is located at two ends of the top of the operating table (2); The composite material convenient replacement mechanism (4) comprises a boss (41), a U-shaped seat (42), a rotating roller (43), a guide frame (44), a cutting component (45) and a coating component (46), wherein: The bosses (41) are symmetrically fixedly connected to two sides of the operating table (2); The U-shaped seats (42) are provided in multiple groups and are slidably clamped on the top of the boss (41) via a clamping plate (422); a connecting arm (421) is provided between two adjacent U-shaped seats (42) and are connected via the connecting arm (421); The rotating roller (43) is rotatably connected to the inner wall of the U-shaped seat (42); The guide frame (44) is fixedly connected to the top of the operating table (2) and is located on one side of the U-shaped seat (42); The cutting assembly (45) is arranged on the guide frame (44), and the coating assembly (46) is arranged on the operating table (2); The cutting assembly (45) comprises a reinforcement sleeve (451), a support head (452), a cutting knife (453), a guide plate (454) and a limiting rod (455), wherein: Both ends of the limiting rod (455) are fixedly connected to the guide frame (44); The reinforcement sleeve (451) is slidably sleeved on the limiting rod (455), one end of the support head (452) is fixedly connected to the outer wall of the reinforcement sleeve (451), and one end of the cutting knife (453) is fixedly connected to the other end of the support head (452); One end of the guide plate (454) is fixedly connected to the outer wall of the reinforcing sleeve (451), and the other end of the guide plate (454) is slidably engaged in a guide groove (21) provided on the operating table (2); The coating assembly (46) comprises a supporting top plate (461), a coating bin (462), a coating roller (463) and a supporting plate (464), wherein: One end of the support top plate (461) is fixedly connected to the top of one end of the retractable mechanism (3) via the support plate (464), and the other end of the support top plate (461) is fixedly connected to the top of the operating table (2) via a support arm (22); The coating bin (462) is fixedly connected to the top of the supporting top plate (461), and both ends of the coating roller (463) are rotatably connected to the inner wall of the coating bin (462); The retractable mechanism (3) comprises a first support frame (31), a second support frame (32), a supporting side plate (33), a retractable assembly (34) and a pressing assembly (35), wherein: The first support frame (31) and the second support frame (32) are respectively fixedly connected to two ends of the top of the operating table (2); The retractable assembly (34) comprises a first drive motor (341) and a drive roller (342), wherein: The first driving motor (341) is respectively mounted on the outer walls of the first supporting frame (31) and the second supporting frame (32); the driving roller (342) is rotatably connected to the inner walls of the first supporting frame (31) and the second supporting frame (32); and the end of the driving roller (342) is fixedly connected to the output end of the first driving motor (341); The supporting side plates (33) are symmetrically fixedly connected to the top of the operating table (2), and are located between the guide frame (44) and the first supporting frame (31); The extrusion assembly (35) comprises a second drive motor (351) and an extrusion roller (352), wherein: The second drive motor (351) is mounted on the outer wall of the supporting side plate (33), the squeezing roller (352) is rotatably connected to the inner wall of the supporting side plate (33), and the output end of the second drive motor (351) is fixedly connected to the end of the squeezing roller (352).

2. The leak-proof pre-coating film extrusion composite device according to claim 1, characterized in that: The driving roller (342) on the inner wall of the second support frame (32) is sleeved with one end of the base film (5), and the driving roller (342) on the inner wall of the first support frame (31) is rolled up with the other end of the base film (5).

3. The leak-proof pre-coating film extrusion composite device according to claim 2, characterized in that: One end of a different composite film (6) is respectively sleeved on the plurality of rotating rollers (43), and the other end of the composite film (6) is bonded and connected to one side of the base film (5) via a guide rod (441) on the guide frame (44).

4. The leak-proof pre-coating film extrusion composite device according to claim 3, characterized in that: A connecting groove (4611) is provided on the top of the supporting top plate (461), and an end of the base film (5) passes through the connecting groove (4611).

5. The leak-proof pre-coating film extrusion laminating device according to claim 4, characterized in that: The outer wall of the coating roller (463) is sleeved with a coating pad, and the bottom of the base film (5) contacts the outer wall of the coating roller (463).

6. The leak-proof pre-coating film extrusion laminating device according to claim 5, characterized in that: The guide rod (441) is symmetrically slidably sleeved with a limit sleeve (442), the limit sleeve (442) is threadedly connected to a limit bolt, and the guide rod (441) is provided with screw holes matching the limit bolts at equal intervals.

7. The leak-proof pre-coating film extrusion laminating device according to claim 6, characterized in that: The bottoms of the outer walls of the first support frame (31), the second support frame (32) and the support side plate (33) are all mounted with fastening bolts (7), and the ends of the fastening bolts (7) are screwed onto the top of the operating table (2).

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