Film machine

Abstract

The present invention belongs to the technical field of packaging machinery and equipment, and relates to a film covering machine, comprising a base, on which a multi-station rotating assembly capable of rotation and adjustment is arranged, a stand is fixedly arranged on the multi-station rotating assembly, a lifting assembly is installed on the stand, a film stretching assembly is connected to the lifting assembly, and is driven by the lifting assembly to perform lifting and lowering movements, a suction cup heat sealing assembly is installed on the upper part of the stand, the film stretching assembly and the suction cup heat sealing assembly are installed on the same side of the stand, and a film unwinding assembly is installed on the other side of the stand; the roll film released by the film unwinding assembly is reversed by the guide roller at the top of the stand, and then led to the suction cup heat sealing assembly, so as to perform film covering operation through the film stretching assembly. The film covering machine can perform film covering operation on two stations at the same time, and the film covering operation efficiency is relatively high; when the film covering machine is in operation, it can be applied to stacking materials of various specifications and models.

Description

Technical Field

[0001] The invention belongs to the technical field of packaging machinery and equipment and relates to a film covering machine. Background Art

[0002] The film sleeve machine is mainly used for film sealing and cutting packaging of large items such as food, beverages, local specialties, ceramics, etc., so as to achieve perfect packaging effect. However, the existing film sleeve machines on the market are for beverages, food and other items, which are not suitable for the use requirements of larger stack packaging, and at the same time greatly affect the packaging speed, which is inconvenient to use.

[0003] In addition, the existing film covering machine has a single station and can only cover one side, so the film covering operation efficiency is low. At the same time, the existing film covering machine can only cover a specific type of stacking material, and the application range is narrow. Summary of the invention

[0004] In view of the above problems, the present invention provides a film covering machine, which can perform film covering operations on two workstations at the same time, and the film covering operation efficiency is relatively high; when the film covering machine is in operation, it can be applicable to stacked materials of various specifications and models.

[0005] According to the technical solution of the present invention: a film covering machine, characterized in that: it includes a base, a multi-station rotating assembly capable of rotation and adjustment is arranged on the base, a stand is fixedly arranged on the multi-station rotating assembly, a lifting assembly is installed on the stand, a film stretching assembly is connected to the lifting assembly and driven by the lifting assembly to perform lifting movement, a suction cup heat sealing assembly is installed on the upper part of the stand, the film stretching assembly and the suction cup heat sealing assembly are installed on the same side of the stand, and a film unwinding assembly is installed on the other side of the stand;

[0006] The roll film unrolled by the film unwinding assembly is reversed by the guide roller on the top of the stand and then led to the suction cup heat sealing assembly to be covered with film through the film stretching assembly.

[0007] As a further improvement of the present invention, the film stretching assembly includes an adjusting beam, on which are provided two support arms capable of opening and closing adjustment, and a set of film stretching assemblies are respectively installed at both ends of each support arm;

[0008] The film-drawing assembly comprises a base, on which a film-drawing platform is provided, and the film-drawing platform can reciprocate relative to the base;

[0009] A film rolling platform can be movably arranged on the film pulling platform, and a film rolling reduction motor is installed on the film rolling platform, and the film rolling reduction motor drives the film rolling active roller to rotate;

[0010] A film-drawing guide shell is installed at the end of the film-drawing platform, and a film-rolling passive roller is rotatably arranged at the upper window position of the film-drawing guide shell. When working, the film-rolling active roller cooperates with the film-rolling passive roller to realize the film-rolling operation.

[0011] As a further improvement of the present invention, a film-drawing platform servo motor is installed on the base, a film-drawing platform helical gear is installed on the output shaft of the film-drawing platform servo motor, a film-drawing platform helical rack is installed on the bottom surface of the film-drawing platform, and the film-drawing platform helical gear is meshed with the film-drawing platform helical rack;

[0012] The film-drawing platform is fixed with a first film-drawing platform linear guide rail and a second film-drawing platform linear guide rail, and the first film-drawing platform linear guide rail and the second film-drawing platform linear guide rail are respectively matched with corresponding guide wheels installed on the base;

[0013] The film-drawing platform comprises a film-drawing platform base, an extension on the film-drawing platform, and a lower extension of the film-drawing platform. The film-drawing platform oblique rack is installed on the bottom surface of the film-drawing platform base, the first film-drawing platform linear guide is installed on the bottom surface of the lower extension of the film-drawing platform, and the second film-drawing platform linear guide is installed on the outer surface of the extension on the film-drawing platform. The lower extension of the film-drawing platform and the extension on the film-drawing platform are placed on both sides of the film-drawing platform base. The guide grooves of the first film-drawing platform linear guide and the second film-drawing platform linear guide are perpendicular to each other. The first film-drawing platform linear guide cooperates with the guide wheel installed on the bottom plate of the base, and the second film-drawing platform linear guide cooperates with the guide wheel installed on the side plate of the base.

[0014] The film-pulling platform is provided with a linear guide rail for the film-rolling platform, and the guide wheel at the bottom of the film-rolling platform cooperates with the linear guide rail for the film-rolling platform; the passive roller pins at both ends of the passive film-rolling roller axis are rotatably arranged on the mounting seat on the film-pulling guide shell, and are limited by the pin cover plate of the passive film-rolling roller;

[0015] The adjusting beam comprises a cross arm beam box body, a screw connecting seat is installed in the cross arm beam box body, two sides of the screw connecting seat are respectively connected with a screw shaft, the two screw shafts are respectively a positive screw shaft and a negative screw shaft, the positive screw shaft and the negative screw shaft are respectively threadedly connected with a support arm connecting plate, the positive screw shaft and the negative screw shaft respectively drive the corresponding support arm connecting plate to approach or move away; the power input end of the screw connecting seat is connected to the input end of the driving motor installed on the adjusting beam;

[0016] The axial outer ends of the positive threaded screw shaft and the negative threaded screw shaft are rotatably supported on the cross arm beam box body through bearing seats respectively;

[0017] A reinforcing arm is installed on the upper part of the support arm, the end of the reinforcing arm in the length direction is fixedly connected to the support arm connecting plate, and the bottom surface of the reinforcing arm is fixedly connected to the support arm;

[0018] A plurality of weight-reducing holes are arranged on the support arm.

[0019] As a further improvement of the present invention, the film unwinding assembly includes an unwinding frame, an unwinding support assembly is installed on one side of the unwinding frame, and two lifting guide seats arranged parallel to each other are fixed on the unwinding frame, and a film guide roller group is rotatably arranged at the upper ends of the two lifting guide seats, and a slide seat that can be lifted and lowered is respectively arranged in the slide groove of each lifting guide seat, a lifting and lowering adjustment roller group is rotatably arranged between the two slide seats, and a frame mounting seat is also fixed on the unwinding frame.

[0020] As a further improvement of the present invention, the film unwinding assembly includes an unwinding drive reduction motor, which is installed on one side of the unwinding frame, and the output shaft of the unwinding drive reduction motor is installed with an unwinding driving wheel, and the unwinding driving wheel is cooperated with an unwinding driven wheel, and the other side of the unwinding frame is rotatably provided with a first unwinding support wheel and a second unwinding support wheel that cooperate with each other;

[0021] The film guide roller group includes three film guide rollers arranged in parallel with each other, and the lifting adjustment roller group includes two lifting adjustment rollers arranged in parallel with each other, and the two ends of the lifting adjustment rollers are respectively rotatably arranged on corresponding slide seats;

[0022] The rack mounting seat comprises an upper rack mounting seat and a lower rack mounting seat of the same structure, wherein the upper rack mounting seat comprises a horizontal plate, and a vertical plate is respectively fixed at both ends of the horizontal plate in the length direction, and the horizontal plate and the vertical plate are respectively provided with through holes for connection;

[0023] The vertical plate and the unwinding frame are connected with each other through a reinforcing plate.

[0024] As a further improvement of the present invention, the suction cup heat sealing assembly includes a suction cup structure and a heat sealing structure;

[0025] The suction cup structure includes a suction cup frame, and a transmission shaft and a driven shaft are rotatably arranged at both ends of the suction cup frame, and the transmission shaft is driven by a reduction motor installed on the suction cup frame;

[0026] A conveyor belt is tensioned on the driving synchronous pulley of the transmission shaft and the passive synchronous pulley of the driven shaft, a first suction cup structure is installed on the upper belt body of the conveyor belt, and a second suction cup structure is installed on the lower belt body of the conveyor belt, and the first suction cup structure and the second suction cup structure have the same structure;

[0027] The first suction cup structure includes a suction cup seat, a suction cup telescopic linear guide rail is installed on the suction cup seat, a suction cup moving slider is slidably arranged on the suction cup telescopic linear guide rail, a suction cup connecting rod is installed on the bottom surface of the suction cup moving slider, and the suction cup assembly is installed on the suction cup connecting rod. The suction cup assembly includes a suction cup base, and a plurality of air distribution channels are arranged in parallel on the suction cup base. An air distribution hole is respectively arranged on the surface of one side of the suction cup base corresponding to each air distribution channel, and an air distribution pipe is fixed on the suction cup base, and the air distribution pipe is sealed and connected with each air distribution hole;

[0028] A plurality of base suction holes are evenly distributed on the surface of the other side of the suction cup base corresponding to each air distribution channel. The suction cup base is rotatably connected to the suction cup opening and closing seat. A plurality of opening and closing seat suction holes are arranged on the suction cup base. Each opening and closing seat suction hole is connected to an opening and closing seat air inlet hole. After the suction cup opening and closing seat and the suction cup base are closed, the opening and closing seat air inlet hole is connected to the side air hole arranged on the suction cup base.

[0029] The heat sealing structure comprises a heat sealing frame, wherein an opening slot is provided on the heat sealing frame for the film to pass through, a first bakelite board component is fixedly installed on one side of the opening slot, and a second bakelite board component is movably provided on the other side of the opening slot, the second bakelite board component can open and close relative to the first bakelite board component, and the first bakelite board component is provided with an electric heating wire;

[0030] A roller assembly is mounted on the heat-sealing frame corresponding to the upper part of the first bakelite board assembly and the second bakelite board assembly; and a film cutting assembly is also included to perform a cutting operation on the upper part of the heat-sealed part of the film;

[0031] The roller assembly comprises two sets of active roller seats fixed on the heat sealing frame, the active roller is rotatably supported between the two active roller seats and driven by a reduction motor installed on the active roller seats;

[0032] Each of the active roller seats is provided with a slide groove, the driven roller seat is slidably arranged in the slide groove of the active roller seat, a moving cylinder is installed on the active roller seat, the piston rod of the moving cylinder is connected to the driven roller seat, and the driven roller is rotatably supported on the driven roller seat;

[0033] The active roller seat comprises an active roller first seat plate and an active roller second seat plate, wherein the bottom plate of the active roller first seat plate is mounted on the heat sealing frame, the active roller second mounting plate is fixedly connected to the active roller first mounting plate by bolts, and a slide groove of the active roller seat is formed between the active roller second mounting plate and the active roller first mounting plate;

[0034] The moving cylinder is installed on the vertical plate seat at the outer end of the second mounting plate of the active roller;

[0035] The film cutting assembly comprises a film cutting cylinder installed on the second bakelite assembly and a first film cutting knife driven by the film cutting cylinder, and the first film cutting knife can move horizontally relative to the first bakelite assembly;

[0036] The second bakelite board component is provided with a knife groove matched with the first film cutting knife;

[0037] Two slide rails are installed in parallel on the heat sealing frame, and the rollers arranged at the bottom of the second bakelite board assembly cooperate with the slide rails;

[0038] An opening and closing cylinder is installed on the heat sealing frame, and the piston rod end of the opening and closing cylinder is connected to the second bakelite board assembly;

[0039] The first bakelite board assembly includes a fixed shell and a first bakelite board fixedly arranged in the fixed shell;

[0040] The second bakelite board assembly comprises a movable shell, and the movable shell is used to fix the second bakelite board.

[0041] As a further improvement of the present invention, the air distribution pipe is connected to the air intake main pipe, and the suction cup base is rotatably connected to the suction cup opening and closing seat through a hinge; a plug is provided at the axial outer end of the air distribution channel, and the side air holes are provided at the other axial end of the air distribution channel, and the side air holes are inclined, and the air intake holes of the opening and closing seat are inclined; the cylinder is hinged to the ear seat installed on the suction cup base, and the piston rod end of the cylinder is hingedly connected to the connecting seat of the suction cup opening and closing seat.

[0042] As a further improvement of the present invention, the lifting assembly includes a bottom sprocket rotatably arranged at the lower part of the frame and a driving sprocket and an auxiliary sprocket rotatably arranged at the upper part of the frame. The chain tensioning is arranged on the bottom sprocket, the driving sprocket and the auxiliary sprocket. One side of the chain is connected to the counterweight, and the other side of the chain is connected to the self-locking assembly. The self-locking assembly cooperates with the self-locking groove on the frame, and the self-locking assembly is connected to the film stretching assembly.

[0043] As a further improvement of the present invention, the self-locking assembly includes a roller chain joint hoisted at the lower end of the chain, a self-locking block is rotatably connected in an open groove at the lower part of the roller chain joint, the self-locking block is hinged to a self-locking housing, the inner wall of the self-locking housing is fixedly connected to a spring seat, a spring is arranged in the spring seat, the inner end of the spring is fixedly connected to a block pusher, and the outer end of the spring is limited and fixed by a spring compression nut connected to the self-locking housing;

[0044] A self-locking surface is constructed on the lower part of the self-locking block near one side of the block pusher, and a limiting stop tip is constructed on the other side of the lower part of the self-locking block. The limiting stop tip cooperates with the self-locking grooves evenly arranged on the self-locking baffle, and the outer end of the block pusher is pressed against the self-locking surface; the self-locking block is rotatably connected to the roller chain joint through a first pin shaft, and a washer is arranged on the shaft end of the first pin shaft; the spring seat is fastened to the self-locking shell by a hexagon socket screw; the self-locking surface is parallel to the length direction of the self-locking block; the self-locking shell is rotatably connected to the self-locking block through a second pin shaft; the spring seat includes a seat body and a sleeve part integrally connected to the seat body, the spring is placed in the sleeve part, and the block pusher can compress the spring to perform telescopic movement in the sleeve part.

[0045] As a further improvement of the present invention, the multi-station rotating assembly includes a slewing bearing installed between the base and the stand and a slewing drive motor installed on the stand, and the slewing drive motor drives the stand to rotate via the slewing bearing.

[0046] The technical effect of the present invention is that the product structure of the present invention is reasonable and ingenious, and when working, it can be applicable to stacking materials of various specifications and models, and has a wide range of applications; at the same time, when working, the product of the present invention can be applicable to multiple workstations to perform film covering according to the work rhythm, which can effectively improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the structure of the present invention.

[0048] Figure 2 Schematic diagram of the structure of the film stretching component.

[0049] Figure 3 for Figure 2 Front view of the middle adjusting beam.

[0050] Figure 4 for Figure 3 AA section view.

[0051] Figure 5 for Figure 3 Stereoscopic diagram.

[0052] Figure 6 It is the front view of the film pulling assembly in the present invention.

[0053] Figure 7 for Figure 6 Top view of the .

[0054] Figure 8 for Figure 6 Left view of .

[0055] Fig. 9 for Figure 6 Stereoscopic diagram.

[0056] Fig.10 for Figure 6 Stereoscopic diagram.

[0057] Fig.11 It is a three-dimensional diagram of the film unwinding assembly.

[0058] Fig.12 It is a three-dimensional diagram of the film unwinding assembly.

[0059] Fig.13 It is a schematic diagram of the working status of the film unwinding component.

[0060] Fig.14 It is the front view of the suction cup structure.

[0061] Fig.15 for Fig.14 Left view of .

[0062] Fig.16 for Fig.14 Stereoscopic diagram.

[0063] Fig.17 The front view of the suction cup assembly.

[0064] Fig.18 for Fig.17 BB section view.

[0065] Fig.19 for Fig.17 Stereoscopic diagram.

[0066] Fig. 20 It is the front view of the present invention in the opened state.

[0067] Fig.21 for Fig. 20 CC section view.

[0068] Fig. 22 for Fig. 20 Stereoscopic diagram.

[0069] Fig.23 This is the front view of the self-locking component.

[0070] Fig.24 for Fig.23 DD section view.

[0071] Fig.25 It is a structural schematic diagram of the self-locking state of the self-locking component.

[0072] Fig.26 It is a three-dimensional diagram of the self-locking component.

[0073] Fig. 27 It is the front view of the heat-sealed structure.

[0074] Fig.28 for Fig. 27 Top view of the .

[0075] Fig.29 for Fig. 27 EE section view.

[0076] Fig.30 for Fig. 27 Stereoscopic diagram.

[0077] Fig.31 for Fig. 27 Front view with roller assembly removed.

[0078] Fig.32 for Fig.31 FF section view.

[0079] Fig.33 for Fig.32 MM section view.

[0080] Fig.34 for Fig.31 Stereoscopic diagram.

[0081] Fig.35 The front view of the roller assembly.

[0082] Fig.36 for Fig.35 Top view of the .

[0083] Fig.37 for Fig.35 Side view of.

[0084] Fig.38 for Fig.35 Stereoscopic diagram. DETAILED DESCRIPTION

[0085] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0086] Figures 1 to 38The invention comprises a multi-station rotating component 1, a film stretching component 2, an adjusting beam 2-1, a supporting arm 2-2, a film drawing component 2-3, a base 2-3-1, a passive film rolling roller 2-3-2, a film drawing platform 2-3-3, a film platform base 2-3-3-1, an extension part 2-3-3-2 on the film drawing platform, a lower extension part 2-3-3-3 on the film drawing platform, an active film rolling roller 2-3-4, a pin shaft cover plate 2-3-5 for the passive film rolling roller, a film rolling platform 2-3-6, a linear guide rail 2-3-8 for the film rolling platform, a linear guide rail 2-3-11 for the second film drawing platform, a bevel rack 2-3-12 for the film drawing platform, a film drawing guide shell 2-3-13, a film rolling reduction motor 2-3-15, a linear guide rail 2-3-17 for the first film drawing platform, a suction cup heat sealing component 4, a suction cup component 4-1, a suction cup base 4-1-10, an air intake pipe 4 -1-11, air distribution pipe 4-1-12, air distribution hole 4-1-13, air distribution channel 4-1-14, base air suction hole 4-1-15, side air hole 4-1-16, plug 4-1-17, suction cup opening and closing seat 4-1-20, active synchronous pulley 4-3, reduction motor 4-4, transmission shaft 4-5, suction cup telescopic linear guide 4-6, passive synchronous pulley 4-7, driven shaft 4-8, lifting group Part 5, bottom sprocket 5-1, driving sprocket 5-2, auxiliary sprocket 5-3, chain 5-4, counterweight 5-5, self-locking assembly 6, self-locking block 6-2, self-locking surface 6-2-1, limit stop tip 6-2-2, spring seat 6-5, second pin shaft 6-8, block pusher 6-9, spring 6-10, self-locking baffle 6-11, self-locking housing 6-13, self-locking groove 6-14, base 7, stand 8, etc.

[0087] like Figures 1 to 38 As shown, the present invention is a film covering machine, comprising a base 7, on which a multi-station rotating assembly 1 capable of rotation and adjustment is arranged, a stand 8 is fixedly arranged on the multi-station rotating assembly 1, on which a lifting assembly 5 is installed, a film stretching assembly 2 is connected to the lifting assembly 5, and is driven by the lifting assembly 5 to perform lifting and lowering movements, a suction cup heat sealing assembly 4 is installed on the upper part of the stand 8, the film stretching assembly 2 and the suction cup heat sealing assembly 4 are installed on the same side of the stand 8, and a film unwinding assembly 3 is installed on the other side of the stand 8. In actual work, the multi-station rotating assembly 1 can be rotated to achieve docking with multiple stations. Through the rotation of the multi-station rotating assembly 1, the film covering machine of the present invention can meet the application needs of multiple stations and effectively improve the work efficiency in actual applications.

[0088] During operation, the film roll released by the film unwinding assembly 3 is reversed by the guide roller at the top of the stand 8 and then led to the suction cup heat sealing assembly 4 for film covering operation through the film stretching assembly 2. The suction cup heat sealing assembly 4 is used to realize the heat sealing of the film and the cutting operation after heat sealing. At the same time, the suction cup assembly 4-1 of the suction cup heat sealing assembly 4 is used to realize the adsorption and opening operation of the film, which is convenient for the subsequent bagging operation. The film after heat sealing and cutting is stretched to the required specifications by the film stretching assembly 2, and then the lifting assembly 5 drives the film stretching assembly 2 to move up and down to a suitable height for film covering operation.

[0089] like Figures 11 to 13 As shown, in order to achieve reliable and stable film covering operation during operation, the film unwinding assembly 3 includes an unwinding frame 3-1, one side of which is installed with an unwinding support assembly, and two lifting guide seats 3-10 arranged parallel to each other are fixed on the unwinding frame 3-1, and a film guide roller group is rotatably arranged at the upper ends of the two lifting guide seats 3-10, and a slide seat 3-11 capable of lifting and lowering adjustment is respectively arranged in the slide groove of each lifting guide seat 3-10, and a lifting and lowering adjustment roller group is rotatably arranged between the two slide seats 3-11, and a frame mounting seat 3-2 is also fixed on the unwinding frame 3-1.

[0090] The film unwinding assembly 3 includes an unwinding drive reduction motor 3-5, which is installed on one side of the unwinding frame 3-1. The output shaft of the unwinding drive reduction motor 3-5 is installed with an unwinding active wheel 3-3, and the unwinding active wheel 3-3 is cooperated with an unwinding driven wheel 3-4. The other side of the unwinding frame 3-1 is rotatably provided with an unwinding first support wheel 3-6 and an unwinding second support wheel 3-7 that cooperate with each other.

[0091] The film guide roller group includes three film guide rollers 3-8 arranged parallel to each other, and the lifting adjustment roller group includes two lifting adjustment rollers 3-9 arranged parallel to each other. Both ends of the lifting adjustment roller 3-9 are rotatably arranged on corresponding slide seats 3-11 respectively.

[0092] The frame mounting seat 3-2 includes an upper frame mounting seat and a lower frame mounting seat with the same structure, wherein the upper frame mounting seat includes a horizontal plate 3-2-1, and a vertical plate 3-2-2 is fixed at both ends of the length direction of the horizontal plate 3-2-1, and through holes for connection are respectively provided on the horizontal plate 3-2-1 and the vertical plate 3-2-2; the vertical plate 3-2-2 and the unwinding frame 3-1 are reinforced by a reinforcing plate.

[0093] like Figures 11 to 13As shown, the film roll 3-12 is installed on the column of the film sleeve machine through the frame mounting seat 3-2 to perform the unwinding operation during operation; the film roll 3-12 is placed on the unwinding driving wheel 3-3 and the unwinding driven wheel 3-4 and the unwinding first support wheel 3-6 and the unwinding second support wheel 3-7 after being tightened by the air expansion shaft. The film sleeve drawn out of the film roll 3-12 passes through three film guide rollers 3-8 and two lifting adjustment rollers 3-9 that can be lifted and moved, which can achieve reliable and stable adjustment of the film roll out, ensuring smooth and reliable material unloading and the final film sleeve operation. During operation, the unwinding drive reduction motor 3-5 drives the unwinding driving wheel 3-3 to rotate, drives the air expansion shaft of the film roll 3-12 to rotate, thereby driving the film roll 3-12 to rotate to achieve the unwinding operation. During the unwinding operation, when the slide 3-11 drives the lifting and adjusting roller 3-9 to be located in the middle and upper position, at this time, most of the film between the lifting and adjusting roller 3-9 and the film guide roller 3-8 has been sent out for the film covering operation. In order to ensure the subsequent normal film covering operation, it is necessary to speed up the unwinding operation of the film roll 3-12; when the film guide roller 3-8 and the lifting and adjusting roller 3-9 are in the lower position, at this time, a large amount of film is stored between the film guide roller 3-8 and the lifting and adjusting roller 3-9, which needs to be used up as soon as possible. At this time, it is necessary to slow down the unwinding speed of the film roll 3-12.

[0094] Furthermore, if Figures 14 to 16 As shown, in order to realize the heat-sealing and cutting operation of the unrolled film, the suction cup heat-sealing assembly 4 includes a suction cup structure and a heat-sealing structure, and the suction cup structure is arranged below the heat-sealing structure; the suction cup structure includes a suction cup frame, and the two ends of the suction cup frame are respectively rotatably provided with a transmission shaft 4-5 and a driven shaft 4-8, and the transmission shaft 4-5 is driven by a reduction motor 4-4 installed on the suction cup frame.

[0095] The conveyor belt is tensioned on the active synchronous pulley 4-3 of the transmission shaft 4-5 and the passive synchronous pulley 4-7 of the driven shaft 4-8, a first suction cup structure is installed on the upper belt body of the conveyor belt, and a second suction cup structure is installed on the lower belt body of the conveyor belt, and the first suction cup structure and the second suction cup structure are identical in structure.

[0096] The first suction cup structure includes a suction cup seat, on which a suction cup telescopic linear guide 4-6 is installed, on which a suction cup moving slider is slidably arranged, and on the bottom surface of the suction cup moving slider is installed a suction cup connecting rod, on which the suction cup assembly 4-1 is installed a suction cup connecting rod, and the suction cup assembly 4-1 includes a suction cup base 4-1-10, on which a plurality of air distribution channels 4-1-14 are arranged in parallel, and on one side surface of the suction cup base 4-1-10, an air distribution hole 4-1-13 is respectively arranged corresponding to each air distribution channel 4-1-14, and an air distribution pipe 4-1-12 is fixed on the suction cup base 4-1-10, and the air distribution pipe 4-1-12 is sealed and connected to each air distribution hole 4-1-13.

[0097] A plurality of base air suction holes 4-1-15 are evenly distributed on the other side surface of the suction cup base 4-1-10 corresponding to each air distribution channel 4-1-14. The suction cup base 4-1-10 is rotatably connected to the suction cup opening and closing seat 4-1-20. A plurality of opening and closing seat air suction holes 4-1-22 are arranged on the suction cup base 4-1-10. Each opening and closing seat air suction hole 4-1-22 is respectively connected to an opening and closing seat air inlet hole 4-1-21. After the suction cup opening and closing seat 4-1-20 and the suction cup base 4-1-10 are closed, the opening and closing seat air inlet hole 4-1-21 is connected to the side air hole 4-1-16 arranged on the suction cup base 4-1-10.

[0098] like Figures 27 to 38 As shown, the heat sealing structure includes a heat sealing frame 4-9-1, and the heat sealing frame 4-9-1 is provided with an opening slot 4-9-13 for the film to pass through, a first bakelite board component is fixedly installed on one side of the opening slot 4-9-13, and a second bakelite board component is movably arranged on the other side of the opening slot 4-9-13, and the second bakelite board component can open and close relative to the first bakelite board component, and the first bakelite board component is provided with an electric heating wire 4-9-12;

[0099] The heat-sealing frame 4-9-1 is provided with a roller assembly corresponding to the upper part of the first bakelite board assembly and the second bakelite board assembly; it also includes a film cutting assembly to perform a cutting operation on the upper part of the heat-sealed part of the film;

[0100] The roller assembly includes two sets of active roller seats 4-9-17 fixed on the heat sealing frame 4-9-1, the active roller 4-9-14 is rotatably supported between the two active roller seats 4-9-17, and is driven by a reduction motor 4-9-16 installed on the active roller seat 4-9-17;

[0101] Each of the active roller seats 4-9-17 is provided with a slide groove, and the driven roller seat 4-9-18 is slidably arranged in the slide groove of the active roller seat 4-9-17, and a movable cylinder 4-9-19 is installed on the active roller seat 4-9-17, and the piston rod of the movable cylinder 4-9-19 is connected with the driven roller seat 4-9-18, and the driven roller 4-9-15 is rotatably supported on the driven roller seat 4-9-18;

[0102] The active roller seat 4-9-17 comprises an active roller first seat plate 4-9-17-1 and an active roller second seat plate 4-9-17-2, wherein the bottom plate of the active roller first seat plate 4-9-17-1 is mounted on the heat sealing frame 4-9-1, the active roller second mounting plate 4-9-17-2 is fixedly connected to the active roller first mounting plate 4-9-17-1 by bolts, and a slide groove of the active roller seat 4-9-17 is formed between the active roller second mounting plate 4-9-17-2 and the active roller first mounting plate 4-9-17-1;

[0103] The moving cylinder 4-9-19 is installed on the vertical plate seat at the outer end of the second mounting plate 4-9-17-2 of the active roller;

[0104] The film cutting assembly includes a film cutting cylinder 4-9-20 installed on the second bakelite assembly and a first film cutting knife 4-9-21 driven by the film cutting cylinder 4-9-20, and the first film cutting knife 4-9-21 can move horizontally relative to the first bakelite assembly;

[0105] The second bakelite board assembly is provided with a knife groove 4-9-22 matched with the first film cutting knife 4-9-21;

[0106] Two slide rails 4-9-10 are installed in parallel on the heat sealing frame 4-9-1, and the rollers arranged at the bottom of the second bakelite board assembly cooperate with the slide rails 4-9-10;

[0107] An opening and closing cylinder 4-9-4 is installed on the heat sealing frame 4-9-1, and the piston rod end of the opening and closing cylinder 4-9-4 is connected to the second bakelite board assembly;

[0108] The first bakelite board assembly includes a fixed shell 4-9-3 and a first bakelite board 4-9-6 fixedly arranged in the fixed shell 4-9-3;

[0109] The second bakelite board assembly includes a movable shell 4-9-2, and the movable shell 4-9-2 is fixedly provided with a second bakelite board 4-9-5.

[0110] The air distribution pipe 4-1-12 is connected to the air intake main pipe 4-1-11, and the suction cup base 4-1-10 is rotatably connected to the suction cup opening and closing seat 4-1-20 through a hinge 4-1-40; a plug 4-1-17 is provided at the axial outer end of the air distribution channel 4-1-14, and the side air hole 4-1-16 is provided at the other axial end of the air distribution channel 4-1-14, and the side air hole 4-1-16 is inclined, and the opening and closing seat air intake hole 4-1-21 is inclined; the cylinder 4-1-30 is hinged on the ear seat 4-1-50 installed on the suction cup base 4-1-10, and the piston rod end of the cylinder 4-1-30 is hingedly connected to the connecting seat of the suction cup opening and closing seat 4-1-20.

[0111] When working, it is installed on the film machine, and the air extraction equipment is connected to the air inlet main pipe 4-1-11 to perform the air extraction operation. During the air extraction process, the suction cup base 4-1-10 moves to the film position to adsorb the film. When the film is adsorbed, the cylinder 4-1-30 pushes the suction cup opening and closing seat 4-1-20 to open. At this time, there is no airflow passing through the opening and closing seat air inlet hole 4-1-21 on the suction cup opening and closing seat 4-1-20, and the side air hole 4-1-16 of the suction cup base 4-1-10 realizes the adsorption of the film. After the film is adsorbed, the cylinder 4-1-30 pushes the suction cup opening and closing seat 4-1-20 to close, so that the suction cup opening and closing seat 4-1-20 cooperates with the suction cup base 4-1-10 to clamp the film, so that the film can be moved stably and reliably.

[0112] Furthermore, if Figures 2~10 As shown, in order to facilitate the subsequent film covering operation, the film needs to be tensioned and stretched to suitable specifications. The film stretching assembly 2 includes an adjusting beam 2-1, on which are provided two support arms 2-2 that can be adjusted for opening and closing, and a group of film pulling assemblies 2-3 are respectively installed at both ends of each support arm 2-2.

[0113] The film-drawing assembly includes a base 2-3-1, on which a film-drawing platform 2-3-3 is arranged, and the film-drawing platform 2-3-3 can move back and forth relative to the base 2-3-1.

[0114] A film rolling platform 2-3-6 can be movably arranged on the film pulling platform 2-3-3, and a film rolling reduction motor 2-3-15 is installed on the film rolling platform 2-3-6. The film rolling reduction motor 2-3-15 drives the film rolling active roller 2-3-4 to rotate.

[0115] The end of the film-pulling platform 2-3-3 is provided with a film-pulling guide shell 2-3-13, and the upper window position of the film-pulling guide shell 2-3-13 is rotatably provided with a film-rolling passive roller 2-3-2. When working, the film-rolling active roller 2-3-4 cooperates with the film-rolling passive roller 2-3-2 to realize the film-rolling operation.

[0116] The film-pulling platform servo motor 2-3-10 is installed on the base 2-3-1, the film-pulling platform bevel gear 2-3-9 is installed on the output shaft of the film-pulling platform servo motor 2-3-10, the film-pulling platform bevel rack 2-3-12 is installed on the bottom surface of the film-pulling platform 2-3-3, and the film-pulling platform bevel gear 2-3-9 is meshed with the film-pulling platform bevel rack 2-3-12.

[0117] The first film-pulling platform linear guide 2-3-17 and the second film-pulling platform linear guide 2-3-11 are fixed on the film-pulling platform 2-3-3. The first film-pulling platform linear guide 2-3-17 and the second film-pulling platform linear guide 2-3-11 respectively cooperate with the corresponding guide wheels installed on the base 2-3-1.

[0118] The film-drawing platform 2-3-3 includes a film-drawing platform base 2-3-3-1, an extension portion 2-3-3-2 on the film-drawing platform, and a lower extension portion 2-3-3-3 of the film-drawing platform. The film-drawing platform oblique rack 2-3-12 is installed on the bottom surface of the film-drawing platform base 2-3-3-1. The first film-drawing platform linear guide 2-3-17 is installed on the bottom surface of the lower extension portion 2-3-3-3 of the film-drawing platform. The second film-drawing platform linear guide 2-3-11 is installed on the outer surface of the extension portion 2-3-3-2 on the film-drawing platform. The lower extension part 2-3-3-3 of the film pulling platform and the upper extension part 2-3-3-2 of the film pulling platform are respectively arranged on both sides of the film pulling platform base 2-3-3-1, and the guide grooves of the first film pulling platform linear guide 2-3-17 and the second film pulling platform linear guide 2-3-11 are perpendicular to each other, the first film pulling platform linear guide 2-3-17 cooperates with the guide wheel installed on the bottom plate of the base 2-3-1, and the second film pulling platform linear guide 2-3-11 cooperates with the guide wheel installed on the side plate of the base 2-3-1.

[0119] The linear guide rail 2-3-8 of the film rolling platform is installed on the film pulling platform 2-3-3, and the guide wheel at the bottom of the film rolling platform 2-3-6 cooperates with the linear guide rail 2-3-8 of the film rolling platform; the passive roller pins 2-3-18 at both axial ends of the passive film rolling roller 2-3-2 are rotatably set on the mounting seat on the film pulling guide shell 2-3-13, and are limited by the pin cover plate 2-3-5 of the passive film rolling roller.

[0120] The adjusting beam 2-1 includes a cross arm beam box 2-1-7, in which a screw connecting seat 2-1-4 is installed, and two sides of the screw connecting seat 2-1-4 are respectively connected to a screw shaft 2-1-5, and the two screw shafts 2-1-5 are respectively a positive screw shaft and a negative screw shaft, and the positive screw shaft and the negative screw shaft are respectively threadedly connected to a support arm connecting plate 2-1-1, and the positive screw shaft and the negative screw shaft respectively drive the corresponding support arm connecting plate 2-1-1 to move closer or farther; the power input end of the screw connecting seat 2-1-4 is connected to the input end of the driving motor installed on the adjusting beam 2-1.

[0121] The axial outer ends of the positive thread screw shaft and the negative thread screw shaft are rotatably supported on the cross arm beam box 2-1-7 through the bearing seat 2-1-9 respectively.

[0122] A reinforcing arm 2-4 is installed on the upper part of the support arm 2-2, the end of the reinforcing arm 2-4 in the length direction is fixedly connected to the support arm connecting plate 2-1-1, and the bottom surface of the reinforcing arm 2-4 is fixedly connected to the support arm 2-2; a plurality of weight-reducing holes are arranged on the support arm 2-2.

[0123] The above structure of the film stretching assembly 2 can realize reliable and stable bagging of the film bags formed after heat sealing and cutting. In the initial bagging operation, the film is stored in the groove formed on the film drawing guide shell 2-3-13, and the film stretching assembly 2 is driven by the lifting assembly 5 to perform lifting movement to realize the bagging operation of the stacked material.

[0124] The lifting assembly 5 includes a bottom sprocket 5-1 rotatably arranged at the lower part of the stand 8 and a driving sprocket 5-2 and an auxiliary sprocket 5-3 rotatably arranged at the upper part of the stand 8. The chain 5-4 is tensioned on the bottom sprocket 5-1, the driving sprocket 5-2 and the auxiliary sprocket 5-3. One side of the chain 5-4 is connected to the counterweight 5-5, and the other side of the chain 5-4 is connected to the self-locking assembly 6. The self-locking assembly 6 cooperates with the self-locking groove on the stand 8, and the self-locking assembly 6 is connected to the film stretching assembly 2.

[0125] like Figures 23 to 26 As shown, in order to realize reliable and stable lifting and lowering operation of the film stretching component 2, the self-locking component 6 includes a roller chain joint 6-3 hoisted at the lower end of the chain 5-4, and the self-locking block 6-2 is rotatably connected in the open groove at the lower part of the roller chain joint 6-3. The self-locking block 6-2 is hinged to the self-locking shell 6-13, and the inner wall of the self-locking shell 6-13 is fixedly connected to the spring seat 6-5. A spring 6-10 is arranged in the spring seat 6-5, and the inner end of the spring 6-10 is fixedly connected to the block pusher 6-9. The outer end of the spring 6-10 is limited and fixed by the spring clamping nut 6-4 connected to the self-locking shell 6-13.

[0126] The lower part of the self-locking block 6-2 is close to the block pusher 6-9 on one side, and a limit stopper tip 6-2-2 is constructed on the other side of the lower part of the self-locking block 6-2. The limit stopper tip 6-2-2 cooperates with the self-locking grooves 6-14 evenly arranged on the self-locking baffle 6-11, and the outer end of the block pusher 6-9 is pressed against the self-locking surface 6-2-1; the self-locking block 6-2 is rotatably connected to the roller chain joint 6-3 through the first pin shaft 6-6, and a pad is arranged at the shaft end of the first pin shaft 6-6. Ring 6-7; the spring seat 6-5 is fastened to the self-locking shell 6-13 by the hexagon socket screw 6-1; the self-locking surface 6-2-1 is parallel to the length direction of the self-locking block 6-2; the self-locking shell 6-13 and the self-locking block 6-2 are rotatably connected by the second pin shaft 6-8; the spring seat 6-5 includes a seat body and a sleeve part integrally connected to the seat body, the spring 6-10 is placed in the sleeve part, and the block pusher 6-9 can compress the spring 6-10 to perform telescopic movement in the sleeve part.

[0127] When the product of the present invention is working, the self-locking housing 6-13 is fixedly connected to the adjusting beam of the film sleeve machine, and the chain 5-4 is in a straightened state under the gravity of the adjusting beam; at this time, the self-locking stopper 6-2 is in a vertical state, the stopper pusher 6-9 is in a state of compressing the spring 6-10 under the action of the self-locking stopper 6-2, and the limit stopper tip 6-2-2 is in a retracted state, which can ensure that the chain 5-4 can stably and reliably carry the adjusting beam to perform vertical lifting and lowering movements; during the lifting and lowering movement, when the chain 5-4 is broken, When the chain 5-4 breaks, since the roller chain joint 6-3 is no longer subject to the suspension constraint of the chain 5-4, the spring 6-10 can push the limit stop tip 6-2-2 to rotate toward the self-locking baffle 6-11. During the falling process of the adjusting beam, the limit stop tip 6-2-2 can be supported in the self-locking groove 6-14, thereby blocking the falling of the adjusting beam and avoiding the safety hazard caused by the free fall of the adjusting beam after the chain 5-4 breaks. The cooperation between the limit stop tip 6-2-2 and the self-locking groove 14 can effectively improve the safety of the operation of the present invention.

[0128] The multi-station rotating assembly 1 includes a slewing bearing installed between the base 7 and the stand 8 and a slewing drive motor installed on the stand 8. The slewing drive motor drives the stand 8 to rotate via the slewing bearing.

[0129] like Figures 11 to 13As shown, the product structure of the present invention is reasonable and ingenious. When working, the film roll is placed on the film unwinding assembly 3, and the film roll is pulled out and guided by the lifting and adjusting rollers 3-9 and the film guide rollers 3-8, and then the film is guided to the suction cup heat sealing assembly 4. After the film is unrolled to a certain length, it is heat-sealed and cut by the heat sealing mechanism of the suction cup heat sealing assembly 4, and then the sheared film is stretched to a suitable opening size by the suction cup mechanism, and installed on the stand 8 of the film sleeve machine through the frame mounting seat 3-2 to carry out the unwinding operation during work; the film roll 3-12 is placed on the unwinding active wheel 3-3 and the unwinding driven wheel 3-4 and the unwinding first support wheel 3-6 and the unwinding second support wheel 3-7 after being tightened by the air expansion shaft. The film sleeve drawn out of the film roll 3-12 passes through three film guide rollers 3-8 and two lifting and adjusting rollers 3-9 that can be lifted and moved, which can realize reliable and stable adjustment of the film roll discharge, ensuring stable and reliable material unloading and the final film sleeve operation. During operation, the unwinding driving reduction motor 3-5 drives the unwinding driving wheel 3-3 to rotate, drives the air expansion shaft of the film roll 3-12 to rotate, thereby driving the film roll 3-12 to rotate, and realizing the unwinding operation. During the unwinding operation, when the slide 3-11 drives the lifting and adjusting roller 9 to be located in the middle upper position, at this time, most of the film between the lifting and adjusting roller 3-9 and the film guide roller 3-8 has been sent out for the film covering operation. In order to ensure the subsequent normal film covering operation, it is necessary to speed up the unwinding operation of the film roll 3-12; when the film guide roller 3-8 and the lifting and adjusting roller 3-9 are located at a lower position, at this time, a large amount of film is stored between the film guide roller 3-8 and the lifting and adjusting roller 3-9, and it needs to be used up as soon as possible, and at this time, it is necessary to slow down the unwinding speed of the film roll 3-12.

[0130] like Figures 14 to 16 As shown, the unrolled film roll passes through the suction cup structure of the suction cup heat sealing component 4 and is opened to a suitable opening size by the suction cup 4-1. Driven by the lifting component 5, the film stretching component 2 rises to the suction cup heat sealing component 4, and the suction cup 4-1 of the suction cup heat sealing component 4 covers the stretched film on the film stretching component 2. The film stretching component 2 is used to realize the stretching operation of the film so as to facilitate the film to be covered on the corresponding stack of materials.

[0131] like Figure 1 As shown, when the product of the present invention is working, the multi-station rotating assembly 1 can realize rotation during work, so as to facilitate multi-station film covering operations and effectively improve work efficiency.

Claims

1. A film covering machine, characterized in that: The invention comprises a base (7), wherein a multi-station rotating assembly (1) capable of rotational adjustment is arranged on the base (7), a stand (8) is fixedly arranged on the multi-station rotating assembly (1), a lifting assembly (5) is installed on the stand (8), a film stretching assembly (2) is connected to the lifting assembly (5) and is driven by the lifting assembly (5) to perform lifting movement, a suction cup heat sealing assembly (4) is installed on the upper part of the stand (8), the film stretching assembly (2) and the suction cup heat sealing assembly (4) are installed on the same side of the stand (8), and a film unwinding assembly (3) is installed on the other side of the stand (8); The rolled film unrolled by the film unwinding assembly (3) is reversed by the guide roller at the top of the stand (8) and then led to the suction cup heat sealing assembly (4) to be covered with the film through the film stretching assembly (2); The suction cup heat sealing assembly (4) comprises a suction cup structure and a heat sealing structure; The suction cup structure comprises a suction cup frame, and a transmission shaft (4-5) and a driven shaft (4-8) are rotatably arranged at two ends of the suction cup frame, and the transmission shaft (4-5) is driven by a reduction motor installed on the suction cup frame; A conveyor belt is tensioned on the driving synchronous pulley (4-3) of the transmission shaft (4-5) and the driven synchronous pulley (4-7) of the driven shaft (4-8), a first suction cup structure is installed on the upper belt body of the conveyor belt, and a second suction cup structure is installed on the lower belt body of the conveyor belt, and the first suction cup structure and the second suction cup structure are identical in structure; The first suction cup structure comprises a suction cup seat, a suction cup telescopic linear guide rail (4-6) is installed on the suction cup seat, a suction cup moving slider is slidably arranged on the suction cup telescopic linear guide rail (4-6), a suction cup connecting rod is installed on the bottom surface of the suction cup moving slider, the suction cup assembly (4-1) is installed on the suction cup connecting rod, the suction cup assembly (4-1) comprises a suction cup base (4-1-10), a plurality of air distribution channels (4-1-14) are arranged in parallel on the suction cup base (4-1-10), an air distribution hole (4-1-13) is respectively arranged on a side surface of the suction cup base (4-1-10) corresponding to each air distribution channel (4-1-14), and an air distribution pipe (4-1-12) is fixed on the suction cup base (4-1-10), and the air distribution pipe (4-1-12) is sealed and connected to each air distribution hole (4-1-13); A plurality of base air suction holes (4-1-15) are evenly distributed on the other side surface of the suction cup base (4-1-10) corresponding to each air distribution channel (4-1-14); the suction cup base (4-1-10) is rotatably connected to the suction cup opening and closing base (4-1-20); a plurality of opening and closing base air suction holes (4-1-22) are arranged on the suction cup base (4-1-10); each opening and closing base air suction hole (4-1-22) is connected to an opening and closing base air inlet hole (4-1-21); after the suction cup opening and closing base (4-1-20) and the suction cup base (4-1-10) are closed, the opening and closing base air inlet hole (4-1-21) is connected to the side air hole (4-1-16) arranged on the suction cup base (4-1-10); The lifting assembly (5) comprises a bottom sprocket (5-1) rotatably arranged at the bottom of the stand (8), and a driving sprocket (5-2) and an auxiliary sprocket (5-3) rotatably arranged at the top of the stand (8); a chain (5-4) is tensionedly arranged on the bottom sprocket (5-1), the driving sprocket (5-2) and the auxiliary sprocket (5-3); one side of the chain (5-4) is connected to the counterweight (5-5); the other side of the chain (5-4) is connected to the self-locking assembly (6); the self-locking assembly (6) cooperates with the self-locking groove on the stand (8); and the self-locking assembly (6) is connected to the film stretching assembly (2); The self-locking assembly (6) comprises a roller chain joint (6-3) hoisted at the lower end of the chain (5-4); a self-locking block (6-2) is rotatably connected in an open groove at the lower part of the roller chain joint (6-3); the self-locking block (6-2) is hingedly connected to a self-locking housing (6-13); the inner wall of the self-locking housing (6-13) is fixedly connected to a spring seat (6-5); a spring (6-10) is arranged in the spring seat (6-5); the inner end of the spring (6-10) is fixedly connected to a block ejector (6-9); and the outer end of the spring (6-10) is limited and fixed by a spring compression nut (6-4) connected to the self-locking housing (6-13); A self-locking surface (6-2-1) is constructed on one side of the lower part of the self-locking block (6-2) close to the block pusher (6-9), and a limit stopper tip (6-2-2) is constructed on the other side of the lower part of the self-locking block (6-2). The limit stopper tip (6-2-2) cooperates with the self-locking grooves (6-14) evenly arranged on the self-locking baffle (6-11), and the outer end of the block pusher (6-9) is pressed against the self-locking surface (6-2-1); the self-locking block (6-2) is rotatably connected to the roller chain joint (6-3) via a first pin shaft (6-6), and the shaft end of the first pin shaft (6-6) is provided with a The spring seat (6-5) is fastened to the self-locking housing (6-13) via a hexagon socket screw (6-1); the self-locking surface (6-2-1) is parallel to the length direction of the self-locking block (6-2); the self-locking housing (6-13) and the self-locking block (6-2) are rotatably connected via a second pin shaft (6-8); the spring seat (6-5) comprises a seat body and a sleeve portion integrally connected to the seat body, the spring (6-10) is disposed in the sleeve portion, and the block ejector (6-9) can compress the spring (6-10) to perform telescopic movement in the sleeve portion.

2. The film covering machine according to claim 1, characterized in that: The film stretching assembly (2) comprises an adjusting beam (2-1), on which two support arms (2-2) capable of being opened and closed are provided, and a set of film stretching assemblies (2-3) are respectively installed at two ends of each support arm (2-2); The film-drawing assembly comprises a base (2-3-1), a film-drawing platform (2-3-3) is arranged on the base (2-3-1), and the film-drawing platform (2-3-3) can reciprocate relative to the base (2-3-1); A film rolling platform (2-3-6) is movably arranged on the film pulling platform (2-3-3), a film rolling reduction motor (2-3-15) is installed on the film rolling platform (2-3-6), and the film rolling reduction motor (2-3-15) drives the film rolling active roller (2-3-4) to rotate; A film-pulling guide shell (2-3-13) is installed at the end of the film-pulling platform (2-3-3), and a passive film-rolling roller (2-3-2) is rotatably arranged at the upper window position of the film-pulling guide shell (2-3-13). When working, the active film-rolling roller (2-3-4) cooperates with the passive film-rolling roller (2-3-2) to realize film-rolling operation.

3. The film covering machine according to claim 2, characterized in that: The base (2-3-1) is mounted with a film-drawing platform servo motor (2-3-10), the output shaft of the film-drawing platform servo motor (2-3-10) is mounted with a film-drawing platform bevel gear (2-3-9), the bottom surface of the film-drawing platform (2-3-3) is mounted with a film-drawing platform bevel rack (2-3-12), and the film-drawing platform bevel gear (2-3-9) is meshed with the film-drawing platform bevel rack (2-3-12); A first film-drawing platform linear guide rail (2-3-17) and a second film-drawing platform linear guide rail (2-3-11) are fixed on the film-drawing platform (2-3-3); the first film-drawing platform linear guide rail (2-3-17) and the second film-drawing platform linear guide rail (2-3-11) respectively cooperate with corresponding guide wheels installed on the base (2-3-1); The film-drawing platform (2-3-3) comprises a film-drawing platform base (2-3-3-1), an extension portion (2-3-3-2) on the film-drawing platform, and a lower extension portion (2-3-3-3) of the film-drawing platform; a film-drawing platform oblique rack (2-3-12) is installed on the bottom surface of the film-drawing platform base (2-3-3-1); a first film-drawing platform linear guide rail (2-3-17) is installed on the bottom surface of the lower extension portion (2-3-3-3) of the film-drawing platform; and a second film-drawing platform linear guide rail (2-3-11) is installed on the outer surface of the extension portion (2-3-3-2) on the film-drawing platform. The lower extension part (2-3-3-3) of the film-drawing platform and the upper extension part (2-3-3-2) of the film-drawing platform are respectively arranged on both sides of the film-drawing platform base (2-3-3-1); the guide grooves of the first film-drawing platform linear guide rail (2-3-17) and the second film-drawing platform linear guide rail (2-3-11) are perpendicular to each other; the first film-drawing platform linear guide rail (2-3-17) cooperates with the guide wheel installed on the bottom plate of the base (2-3-1); and the second film-drawing platform linear guide rail (2-3-11) cooperates with the guide wheel installed on the side plate of the base (2-3-1); The film-pulling platform (2-3-3) is provided with a film-rolling platform linear guide rail (2-3-8), and the guide wheel at the bottom of the film-rolling platform (2-3-6) cooperates with the film-rolling platform linear guide rail (2-3-8); the passive roller pins (2-3-18) at both axial ends of the passive film-rolling roller (2-3-2) are rotatably arranged on a mounting seat on the film-pulling guide shell (2-3-13), and are limited by a film-rolling passive roller pin cover plate (2-3-5); The adjusting beam (2-1) comprises a cross arm beam box (2-1-7), a screw connecting seat (2-1-4) is installed in the cross arm beam box (2-1-7), two sides of the screw connecting seat (2-1-4) are respectively connected to a screw shaft (2-1-5), the two screw shafts (2-1-5) are respectively a positive thread screw shaft and a negative thread screw shaft, the positive thread screw shaft and the negative thread screw shaft are respectively threadedly connected to a support arm connecting plate (2-1-1), the positive thread screw shaft and the negative thread screw shaft respectively drive the corresponding support arm connecting plate (2-1-1) to move closer or farther; the power input end of the screw connecting seat (2-1-4) is connected to the input end of a driving motor installed on the adjusting beam (2-1); The axial outer ends of the positive threaded screw shaft and the negative threaded screw shaft are rotatably supported on the cross arm beam box body (2-1-7) through bearing seats (2-1-9) respectively; The reinforcing arm (2-4) is installed on the upper part of the supporting arm (2-2), the end of the reinforcing arm (2-4) in the length direction is fixedly connected to the supporting arm connecting plate (2-1-1), and the bottom surface of the reinforcing arm (2-4) is fixedly connected to the supporting arm (2-2); A plurality of weight-reducing holes are provided on the support arm (2-2).

4. The film covering machine according to claim 1, characterized in that: The film unwinding assembly (3) comprises an unwinding frame (3-1), one side of which is provided with an unwinding support assembly, and two lifting guide seats (3-10) arranged parallel to each other are fixed on the unwinding frame (3-1), a film guide roller group is rotatably arranged at the upper ends of the two lifting guide seats (3-10), a sliding seat (3-11) capable of lifting and lowering adjustment is respectively arranged in a slide groove of each lifting guide seat (3-10), a lifting and lowering adjustment roller group is rotatably arranged between the two sliding seats (3-11), and a frame mounting seat (3-2) is also fixed on the unwinding frame (3-1).

5. The film covering machine according to claim 4, characterized in that: The film unwinding assembly (3) comprises an unwinding driving reduction motor (3-5), the unwinding driving reduction motor (3-5) is mounted on one side of an unwinding frame (3-1), an unwinding driving wheel (3-3) is mounted on the output shaft of the unwinding driving reduction motor (3-5), the unwinding driving wheel (3-3) is matched with an unwinding driven wheel (3-4), and a first unwinding support wheel (3-6) and a second unwinding support wheel (3-7) which cooperate with each other are rotatably arranged on the other side of the unwinding frame (3-1); The film guide roller group comprises three film guide rollers (3-8) arranged in parallel with each other, the lifting and adjusting roller group comprises two lifting and adjusting rollers (3-9) arranged in parallel with each other, and the two ends of the lifting and adjusting rollers (3-9) are respectively rotatably arranged on corresponding slide seats (3-11); The rack mounting seat (3-2) comprises an upper rack mounting seat and a lower rack mounting seat of the same structure, wherein the upper rack mounting seat comprises a horizontal plate (3-2-1), a vertical plate (3-2-2) is respectively fixed at both ends of the horizontal plate (3-2-1) in the length direction, and through holes for connection are respectively provided on the horizontal plate (3-2-1) and the vertical plate (3-2-2); The vertical plate (3-2-2) and the unwinding frame (3-1) are reinforced and connected via a reinforcement plate.

6. The film covering machine according to claim 1, characterized in that: The heat sealing structure comprises a heat sealing frame (4-9-1), the heat sealing frame (4-9-1) is provided with an opening slot (4-9-13) for the film to pass through, a first bakelite board component is fixedly mounted on one side of the opening slot (4-9-13), a second bakelite board component is movably arranged on the other side of the opening slot (4-9-13), the second bakelite board component can open and close relative to the first bakelite board component, and the first bakelite board component is provided with an electric heating wire (4-9-12); A roller assembly is mounted on the heat sealing frame (4-9-1) corresponding to the upper part of the first bakelite board assembly and the second bakelite board assembly; It also includes a film cutting assembly to cut the upper part of the heat-sealed portion of the film; The roller assembly comprises two sets of active roller seats (4-9-17) fixed on the heat sealing frame (4-9-1), the active roller (4-9-14) is rotatably supported between the two active roller seats (4-9-17) and is driven by a reduction motor installed on the active roller seat (4-9-17); A slide groove is constructed on each of the active roller seats (4-9-17); a driven roller seat (4-9-18) is slidably arranged in the slide groove of the active roller seat (4-9-17); a movable cylinder (4-9-19) is installed on the active roller seat (4-9-17); a piston rod of the movable cylinder (4-9-19) is connected to the driven roller seat (4-9-18); and the driven roller (4-9-15) is rotatably supported on the driven roller seat (4-9-18); The active roller seat (4-9-17) comprises an active roller first mounting plate (4-9-17-1) and an active roller second mounting plate (4-9-17-2), wherein the bottom plate of the active roller first mounting plate (4-9-17-1) is mounted on the heat sealing frame (4-9-1), the active roller second mounting plate (4-9-17-2) is fixedly connected to the active roller first mounting plate (4-9-17-1) by bolts, and a slide groove of the active roller seat (4-9-17) is formed between the active roller second mounting plate (4-9-17-2) and the active roller first mounting plate (4-9-17-1); The moving cylinder (4-9-19) is installed on the vertical plate seat at the outer end of the second mounting plate (4-9-17-2) of the active roller; The film cutting assembly comprises a film cutting cylinder (4-9-20) installed on the second bakelite board assembly and a first film cutting knife (4-9-21) driven by the film cutting cylinder (4-9-20), wherein the first film cutting knife (4-9-21) can move horizontally relative to the first bakelite board assembly; The second bakelite board assembly is provided with a knife groove (4-9-22) that matches the first film cutting knife (4-9-21); Two slide rails (4-9-10) are installed in parallel on the heat sealing frame (4-9-1), and rollers arranged at the bottom of the second bakelite board assembly cooperate with the slide rails (4-9-10); An opening and closing cylinder (4-9-4) is installed on the heat sealing frame (4-9-1), and the piston rod end of the opening and closing cylinder (4-9-4) is connected to the second bakelite board assembly; The first bakelite board assembly comprises a fixed shell (4-9-3) and a first bakelite board (4-9-6) fixedly arranged in the fixed shell (4-9-3); The second bakelite board assembly comprises a movable housing (4-9-2), and the movable housing (4-9-2) is fixedly provided with the second bakelite board (4-9-5).

7. The film covering machine according to claim 6, characterized in that: The air distribution pipe (4-1-12) is connected to the air intake main pipe (4-1-11), and the suction cup base (4-1-10) is rotatably connected to the suction cup opening and closing seat (4-1-20) via a hinge (4-1-40); a plug (4-1-17) is provided at the axial outer end of the air distribution channel (4-1-14), and the side air hole (4-1-16) is provided at the other axial end of the air distribution channel (4-1-14), and the side air hole (4-1-16) is inclined, and the opening and closing seat air intake hole (4-1-21) is inclined; the cylinder (4-1-30) is hingedly connected to the ear seat (4-1-50) installed on the suction cup base (4-1-10), and the piston rod end of the cylinder (4-1-30) is hingedly connected to the connecting seat of the suction cup opening and closing seat (4-1-20).

8. The film covering machine according to claim 1, characterized in that: The multi-station rotating assembly (1) comprises a slewing bearing installed between a base (7) and a stand (8) and a slewing drive motor installed on the stand (8), wherein the slewing drive motor drives the stand (8) to rotate via the slewing bearing.

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