A co-extruded polyethylene film blown film forming equipment

Abstract

The present invention relates to the technical field of polyethylene film, specifically to a blown film forming device for a co-extruded polyethylene film, comprising a working frame, a first fixed plate, fixedly connected to one side of the outer wall of the working frame, a second fixed plate, fixedly connected to the side of the outer wall of the working frame away from the first fixed plate, a guide roller, rotatably connected to one side of the outer wall of the first fixed plate, and the guide roller is rotatably connected to the outer wall of the second fixed plate, a first groove is provided inside the first fixed plate, and a box is fixedly connected to the outer wall of the first fixed plate. The present invention arranges a disc on the outer wall of the driving shaft, so that when the device is in use, the outer wall of the guide roller can be cleaned in real time to prevent the guide roller itself from having burrs, or debris in the air attached to the outside of the guide roller, which may cause the polyethylene film to break during production or tear the outside of the polyethylene film.

Description

Technical Field

[0001] The invention relates to the technical field of polyethylene films, in particular to a film blowing molding device for a co-extruded polyethylene film. Background Art

[0002] PE film, also known as polyethylene film, refers to a film produced from PE particles. PE film is moisture-proof and has low moisture permeability. Polyethylene film (PE) can be made into products with different properties such as low-density, medium-density, high-density polyethylene and cross-linked polyethylene according to different manufacturing methods and control methods. Co-extrusion blown film forming equipment is required for the production of polyethylene film.

[0003] At present, when the co-extrusion blown film forming equipment on the market blows the polyethylene film, it is necessary to put the PE particles into the blown film forming equipment for heating and blowing. When the PE particles are formed, they need to be cooled and inflated by the air ring and then extruded by the herringbone plate. After passing through the guide roller, they reach the take-up roller, and finally the take-up roller rolls the finished film into a tube. When the guide roller guides the polyethylene film, it will have burrs or debris in the air attached to its outside, which will cause the polyethylene film to break during production or tear the outside of the polyethylene film, resulting in a decrease in the yield of the polyethylene film, thereby reducing the production efficiency of the entire co-extrusion blown film forming equipment.

[0004] Therefore, a film blowing device for co-extruded polyethylene film is proposed. Summary of the invention

[0005] The object of the present invention is to provide a blown film forming device for a co-extruded polyethylene film. By arranging a disc on the outer wall of a driving shaft, when the device is in use, the outer wall of a guide roller can be cleaned in real time to prevent the guide roller itself from having burrs or debris in the air attached to its outside, which may cause the polyethylene film to break during production or cause tearing of the outside of the polyethylene film, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A film blowing molding device for a co-extruded polyethylene film, comprising a working frame;

[0008] A first fixing plate, fixedly connected to one side of the outer wall of the working frame;

[0009] A second fixing plate, fixedly connected to a side of the outer wall of the work frame away from the first fixing plate;

[0010] A guide roller, rotatably connected to one side of the outer wall of the first fixed plate, and the guide roller is rotatably connected to the outer wall of the second fixed plate;

[0011] A first groove is provided inside the first fixed plate, a box is fixedly connected to the outer wall of the first fixed plate, a motor is fixedly connected inside the box, one end of the motor output shaft is fixedly connected to a driving shaft, one end of the driving shaft passes through the first groove, the driving shaft is rotatably connected to the first fixed plate, a disc is fixedly connected to the outer wall of the driving shaft, a connecting groove is provided on the outer wall of the disc, a stabilizing plate is fixedly connected inside the connecting groove, an airbag passes through the inside of the stabilizing plate, an air intake pipe is fixedly connected to the outer wall of the airbag, the air intake pipe is communicated with the airbag, a ventilation groove is provided inside the driving shaft, the airbag passes through the inside of the ventilation groove, the airbag is communicated with the ventilation groove, a slide is fixedly connected to one end of the airbag, and a first one-way valve is fixedly connected to one end of the airbag away from the slide, a connecting plate is provided at the bottom end of the guide roller, a first cleaning plate is fixedly connected to the top of the connecting plate, a second cleaning plate is fixedly connected to the top of the connecting plate, one end of the driving shaft passes between the first cleaning plate and the second cleaning plate, and the top of the first cleaning plate fits the outer wall of the guide roller.

[0012] Preferably, the slide plate is slidably connected to the connecting groove, the end of the air intake pipe away from the airbag passes through the outer wall of the disc, a second one-way valve is fixedly connected to one end of the air intake pipe, a transmission belt is provided between the driving shaft and the guide roller, the driving shaft is transmission-connected to the guide roller through the transmission belt, a first magnet is fixedly connected to the inside of the first groove, a second magnet is fixedly connected to the outer wall of the slide plate, a pipe passes through the inside of the first groove, the pipe is fixedly connected to the first fixed plate, and the pipe is connected to the first groove.

[0013] When the device is used, when the film reaches the top of the guide roller, the motor is started, and the motor output shaft drives the driving shaft to rotate, the driving shaft drives the disc to rotate, and the disc drives the airbag to move in a circle. When the airbag passes through the first magnet, the first magnet and the second magnet repel each other, causing the second magnet to drive the slide plate to move, so that the slide plate slides inside the connecting groove, and the slide plate squeezes the airbag at the same time, and the airbag discharges its internal gas into the ventilation groove through the first one-way valve. When the airbag moves away from the first magnet, the slide plate will move inside the connecting groove due to the force thrown out by the disc, and the slide plate drives the airbag to move, causing the airbag to inhale through the second one-way valve and the intake pipe.

[0014] Preferably, a second groove is formed on the outer wall of the second fixing plate, a discharge pipe is fixedly connected inside the second groove, the discharge pipe is communicated with the second groove, and one end of the discharge pipe runs through between the first cleaning plate and the second cleaning plate.

[0015] At the same time, the driving shaft will drive the guide roller to rotate through the transmission belt. When the guide roller rotates, the first cleaning plate cleans the outer wall of the guide roller, so that the debris or burrs cleaned from the outer wall of the guide roller fall onto the connecting plate. The height of the first cleaning plate is greater than the height of the second cleaning plate, so that the impurities cleaned from the outer wall of the guide roller by the first cleaning plate can fall onto the connecting plate between the first cleaning plate and the second cleaning plate. At this time, the gas is blown from the ventilation groove into between the first cleaning plate and the second cleaning plate, and the debris or burrs are blown from between the first cleaning plate and the second cleaning plate into the discharge pipe.

[0016] Preferably, a box body is slidably connected to the interior of the second groove, a stabilizing groove is provided inside the box body, a pressing rod passes through the interior of the stabilizing groove, the pressing rod is slidably connected to the box body, a pressing block is fixedly connected to one end of the pressing rod, a telescopic spring is provided between the pressing block and the stabilizing groove, a sliding groove is provided on the outer wall of the pressing block, a slider is slidably connected to the interior of the sliding groove, a locking rod is hinged on the top of the slider, one end of the locking rod passes through the outer wall of the box body, the locking rod is slidably connected to the box body, a locking groove is provided inside the second groove, and the locking groove is engaged with one end of the locking rod.

[0017] When the gas blows the debris or burrs from between the first cleaning plate and the second cleaning plate into the discharge pipe, the debris or burrs will rush out of the discharge pipe and fall into the box body. When the debris or burrs inside the box body need to be cleaned, the pressing rod is pressed, and the pressing rod drives the pressing block to move. The pressing block squeezes the telescopic spring. The cross-sectional shape of the pressing block is a right-angled trapezoid. The slide groove is located on the inclined surface of the pressing block, so that the pressing block can drive the slider to move. The slider slides inside the slide groove, and the slider drives the engaging rod to move, so that the engaging rod moves out of the engaging groove, and the box body is pulled to move the box body out of the second groove.

[0018] Preferably, a third groove is provided inside the second fixed plate, a rotating rod is provided inside the third groove, one end of the rotating rod passes through the second groove, the rotating rod is rotatably connected to the second fixed plate, a connecting groove is provided inside the rotating rod, a conductive block is fixedly connected inside the connecting groove, a stirring rod passes through the connecting groove, the stirring rod is slidably connected to the rotating rod, a conductive spring is provided between the stirring rod and the conductive block, a rotating plate is fixedly connected to the outer wall of the stirring rod, and a steering gear is provided between the rotating rod and the guide roller.

[0019] When the guide roller moves, the guide roller will drive the rotating rod to rotate through the steering gear, the rotating rod will drive the stirring rod to rotate, and the stirring rod will drive the rotating plate to move in a circle, so as to break up the debris or burrs ejected from the discharge pipe, so that they fall into the box body more evenly. When the debris or burrs inside the box body appear in a pile shape, the conductive block is powered off, and the conductive spring 40 is opened after power failure, so that the stirring rod can enter the box body to disrupt the debris or burrs in the pile shape inside the box body. When the disruption is completed, the conductive block is powered on, and the conductive block conducts electricity to the conductive spring 40. When the spring is energized, it is equivalent to an energized solenoid, and each turn of the spring is equivalent to a circular current. The current direction in each turn of the spring is the same. According to the mutual attraction between currents in the same direction, each turn of the spring attracts the adjacent spring, causing the conductive spring 40 to contract, and the conductive spring 40 drives the stirring rod back to its original position.

[0020] Preferably, the cross-sectional shape of the pressing block is set to a right-angled trapezoid, one end of the telescopic spring is fixedly connected to the inside of the stabilizing groove, the other end of the telescopic spring is fixedly connected to the outer wall of the pressing block, and the cross-sectional shape of the stabilizing groove is set to a square.

[0021] The cross-sectional shape of the pressing block is a right-angled trapezoid, and the slide groove is located on the inclined surface of the pressing block, so that the pressing block can drive the slider to move, and the slider slides inside the slide groove. The slider drives the engaging rod to move, so that the engaging rod moves out from the engaging groove, pulling the box body, so that the box body moves out from the second groove.

[0022] Preferably, the number of the communicating grooves is set to be multiple, and the multiple communicating grooves are distributed in a circular array inside the disc, the cross-sectional shape of the air outlet pipe is set to be L-shaped, and the cross-sectional shape of the ventilation groove is set to be circular.

[0023] When the disc rotates, the multiple air bags can intermittently blow air into the ventilation slots, so that the gas can blow the debris or burrs from between the first cleaning plate and the second cleaning plate into the discharge pipe.

[0024] Preferably, the first one-way valve only allows gas to enter the ventilation groove from the inside of the airbag, the second one-way valve only allows gas to enter the inside of the air intake pipe from the outside of the disc, and the cross-sectional shape of the first groove is set to be circular.

[0025] The first one-way valve and the second one-way valve are both gas one-way valves. When the airbag is exhaling, the second one-way valve can prevent the gas from spraying out from the inside of the intake pipe. When the airbag is inhaling, the first one-way valve can prevent the gas from being inhaled from the inside of the ventilation groove.

[0026] Preferably, the first magnet and the second magnet repel each other, the number of the air intake pipes is set to be multiple, the multiple air intake pipes are evenly distributed inside the disc, and the cross-sectional shape of the connecting groove is set to be square.

[0027] The first magnet and the second magnet are both neodymium magnets. When the disc moves in a circular motion, the first magnet and the second magnet repel each other so that the airbag can reciprocate, causing debris or burrs to be blown into the discharge pipe from between the first cleaning plate and the second cleaning plate.

[0028] Preferably, one end of the conductive spring is electrically connected to the conductive block, and the other end of the conductive spring is fixedly connected to the outer wall of the stirring rod. The number of the rotating plates is set to two, and the two rotating plates are symmetrically distributed on the outer wall of the stirring rod.

[0029] The stirring rod can be powered on and off by the conductive spring according to actual needs, and the length of the stirring rod can be changed to prevent burrs or debris inside the box from forming a valley pile.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. When the equipment is in use, the outer wall of the guide roller can be cleaned in real time to prevent the guide roller itself from having burrs or debris in the air attached to its outside, which may cause the polyethylene film to break during production or tear the outside of the polyethylene film.

[0032] 2. The burrs or debris that have been cleaned can be collected in the box body in time. The stirring rod can be powered on and off according to actual needs, and the length of the stirring rod can be changed to prevent the burrs or debris inside the box body from forming a pile shape, resulting in low utilization rate inside the box body.

[0033] 3. When the inside of the box does not need to be cleaned, the box can be stabilized in the second groove to prevent the box from being accidentally hit by external force, causing the box to open, and the internal burrs or debris to spill out, thereby causing secondary pollution to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the disc of the present invention;

[0035] Figure 2 It is a main cross-sectional view of the present invention;

[0036] Figure 3 is a side sectional view of a second fixing plate of the present invention;

[0037] Figure 4 It is a front view of the disc of the present invention;

[0038] Figure 5 It is a main cross-sectional view of the connecting groove of the present invention;

[0039] Figure 6 It is a main cross-sectional view of a first cleaning plate of the present invention;

[0040] Figure 7It is a schematic diagram of the local structure of the pressing block of the present invention;

[0041] Figure 8 This is a schematic structural diagram of the conductive spring of the present invention in a powered state;

[0042] Fig. 9 It is a schematic structural diagram of the conductive spring of the present invention in a power-off state;

[0043] Fig.10 for Figure 3 A-section structure enlarged schematic diagram.

[0044] In the figure: 1 working frame, 2 first fixed plate, 3 second fixed plate, 4 guide roller, 5 first groove, 6 box body, 7 motor, 8 driving shaft, 9 disc, 10 connecting groove, 11 stabilizing plate, 12 air bag, 13 air inlet pipe, 14 ventilation groove, 15 slide plate, 16 first one-way valve, 17 second one-way valve, 18 transmission belt, 19 first magnet, 20 second magnet, 21 pipeline, 22 connecting plate, 23 first cleaning plate, 24 second cleaning plate, 25 second groove, 26 discharge pipe, 27 box body, 28 stabilizing groove, 29 pressing rod, 30 pressing block, 31 telescopic spring, 32 slide groove, 33 slider, 34 engaging rod, 35 engaging groove, 36 third groove, 37 rotating rod, 38 connecting groove, 39 conductive block, 40 conductive spring, 41 stirring rod, 42 rotating plate, 43 steering gear. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0047] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The technical solution in the embodiment of the present invention is to solve the above technical problems, and the overall idea is as follows: when the device is in use, by arranging a disc 9 on the outer wall of the driving shaft 4, arranging an airbag 12 inside the disc 9, arranging a second magnet 20 on one side of the airbag 12, and arranging a first magnet 19 inside the first groove 5, the outer wall of the guide roller 4 can be cleaned in real time to prevent the guide roller 4 from having burrs or debris in the air attached to its outside, which may cause the polyethylene film to break during production or tear the outside of the polyethylene film;

[0049] See also Figures 1 to 10 The present invention provides a co-extruded polyethylene film blown film forming device, and the technical scheme is as follows:

[0050] A blown film forming device for a co-extruded polyethylene film, comprising a work frame 1, a first fixed plate 2, fixedly connected to one side of an outer wall of the work frame 1, a second fixed plate 3, fixedly connected to a side of the outer wall of the work frame 1 away from the first fixed plate 2, a guide roller 4, rotatably connected to one side of an outer wall of the first fixed plate 2, and the guide roller 4 is rotatably connected to the outer wall of the second fixed plate 3, a first groove 5 is provided inside the first fixed plate 2, a box body 6 is fixedly connected to the outer wall of the first fixed plate 2, a motor 7 is fixedly connected to the inside of the box body 6, one end of the output shaft of the motor 7 is fixedly connected to a driving shaft 8, one end of the driving shaft 8 passes through the first groove 5, the driving shaft 8 is rotatably connected to the first fixed plate 2, a disc 9 is fixedly connected to the outer wall of the driving shaft 8, and a connecting groove 10 is provided on the outer wall of the disc 9, A stabilizing plate 11 is fixedly connected to the inside of the connecting groove 10, an airbag 12 runs through the inside of the stabilizing plate 11, an air intake pipe 13 is fixedly connected to the outer wall of the airbag 12, the air intake pipe 13 is connected to the airbag 12, a ventilation groove 14 is opened inside the driving shaft 8, the airbag 12 runs through the inside of the ventilation groove 14, the airbag 12 is connected to the ventilation groove 14, a slide plate 15 is fixedly connected to one end of the airbag 12, a first one-way valve 16 is fixedly connected to one end of the airbag 12 away from the slide plate 15, a connecting plate 22 is provided at the bottom end of the guide roller 4, a first cleaning plate 23 is fixedly connected to the top of the connecting plate 22, a second cleaning plate 24 is fixedly connected to the top of the connecting plate 22, one end of the driving shaft 8 runs between the first cleaning plate 23 and the second cleaning plate 24, and the top of the first cleaning plate 23 fits against the outer wall of the guide roller 4.

[0051] As an embodiment of the present invention, refer to Figures 1 to 5 The slide plate 15 is slidably connected to the connecting groove 10, the end of the intake pipe 13 away from the airbag 12 passes through the outer wall of the disc 9, and a second one-way valve 17 is fixedly connected to one end of the intake pipe 13. A transmission belt 18 is provided between the driving shaft 8 and the guide roller 4. The driving shaft 8 is transmission-connected to the guide roller 4 through the transmission belt 18. A first magnet 19 is fixedly connected to the inside of the first groove 5, and a second magnet 20 is fixedly connected to the outer wall of the slide plate 15. A pipe 21 passes through the inside of the first groove 5, and the pipe 21 is fixedly connected to the first fixed plate 2, and the pipe 21 is connected to the first groove 5.

[0052] When the device is used, when the film reaches the top of the guide roller 4, the motor 7 is started, and the output shaft of the motor 7 drives the driving shaft 8 to rotate, and the driving shaft 8 drives the disc 9 to rotate, and the disc 9 drives the airbag 12 to move in a circle. When the airbag 12 passes through the first magnet 19, the first magnet 19 and the second magnet 20 repel each other, causing the second magnet 20 to drive the slide plate 15 to move, so that the slide plate 15 slides inside the connecting groove 10, and the slide plate 15 squeezes the airbag 12 at the same time, and the airbag 12 discharges its internal gas to the inside of the ventilation groove 14 through the first one-way valve 16. When the airbag 12 is away from the first magnet 19, the slide plate 15 will move inside the connecting groove 10 due to the force thrown out by the disc 9, and the slide plate 15 drives the airbag 12 to move, so that the airbag 12 will inhale through the second one-way valve 17 through the air intake pipe 13, so that the gas enters the airbag 12 from the air intake pipe 13, so as to prepare for the subsequent wind cleaning of the heat debris attached to the outside of the guide roller 4.

[0053] As an embodiment of the present invention, refer to Figures 1 to 6 A second groove 25 is formed on the outer wall of the second fixed plate 3 , and a discharge pipe 26 is fixedly connected inside the second groove 25 . The discharge pipe 26 is connected to the second groove 25 , and one end of the discharge pipe 26 passes through between the first cleaning plate 23 and the second cleaning plate 24 .

[0054] At the same time, the driving shaft 8 will drive the guide roller 4 to rotate through the transmission belt 18. When the guide roller 4 rotates, the first cleaning plate 23 cleans the outer wall of the guide roller 4, so that the debris or burrs cleaned from the outer wall of the guide roller 4 fall onto the connecting plate 22. The height of the first cleaning plate 23 is greater than the height of the second cleaning plate 24, so that the impurities cleaned from the outer wall of the guide roller 4 by the first cleaning plate 23 can fall onto the connecting plate 22 between the first cleaning plate 23 and the second cleaning plate 24. At this time, the gas is blown from the ventilation groove 14 into the space between the first cleaning plate 23 and the second cleaning plate 24, and the debris or burrs are blown from the space between the first cleaning plate 23 and the second cleaning plate 24 into the discharge pipe 26.

[0055] As an embodiment of the present invention, refer to Figures 3 to 10 A box body 27 is slidably connected to the inside of the second groove 25, a stabilizing groove 28 is provided inside the box body 27, a pressing rod 29 runs through the inside of the stabilizing groove 28, the pressing rod 29 is slidably connected to the box body 27, a pressing block 30 is fixedly connected to one end of the pressing rod 29, a telescopic spring 31 is provided between the pressing block 30 and the stabilizing groove 28, a sliding groove 32 is provided on the outer wall of the pressing block 30, a slider 33 is slidably connected to the inside of the sliding groove 32, a locking rod 34 is hinged on the top of the slider 33, one end of the locking rod 34 runs through the outer wall of the box body 27, the locking rod 34 is slidably connected to the box body 27, a locking groove 35 is provided inside the second groove 25, and the locking groove 35 is engaged with one end of the locking rod 34.

[0056] When the gas blows the debris or burrs from between the first cleaning plate 23 and the second cleaning plate 24 into the discharge pipe 26, the debris or burrs will rush out of the discharge pipe 26 and fall into the box body 27. When the debris or burrs inside the box body 27 need to be cleaned, the pressing rod 29 is pressed, and the pressing rod 29 drives the pressing block 30 to move. The pressing block 30 squeezes the telescopic spring 31. The cross-sectional shape of the pressing block 30 is a right-angled trapezoid. The slide groove 32 is located on the inclined surface of the pressing block 30, so that the pressing block 30 can drive the slider 33 to move. The slider 33 slides inside the slide groove 32, and the slider 33 drives the engaging rod 34 to move, so that the engaging rod 34 moves out from the engaging groove 35, pulling the box body 27, and moving the box body 27 out from the second groove 25.

[0057] As an embodiment of the present invention, refer to Figures 3 to 10 A third groove 36 is provided inside the second fixed plate 3, a rotating rod 37 is provided inside the third groove 36, one end of the rotating rod 37 passes through the second groove 25, the rotating rod 37 is rotatably connected to the second fixed plate 3, a connecting groove 38 is provided inside the rotating rod 37, a conductive block 39 is fixedly connected inside the connecting groove 38, a stirring rod 41 passes through the connecting groove 38, the stirring rod 41 is slidably connected to the rotating rod 37, a conductive spring 40 is provided between the stirring rod 41 and the conductive block 39, a rotating plate 42 is fixedly connected to the outer wall of the stirring rod 41, and a steering gear 43 is provided between the rotating rod 37 and the guide roller 4.

[0058] When the guide roller 4 moves, the guide roller 4 will drive the rotating rod 37 to rotate through the steering gear 43, and the rotating rod 37 will drive the stirring rod 41 to rotate, and the stirring rod 41 will drive the rotating plate 42 to move in a circle, so as to break up the debris or burrs ejected from the discharge pipe 26, so that they fall into the box body 27 more evenly. When the debris or burrs inside the box body 27 appear in a pile shape, the conductive block 39 is powered off, and the conductive spring 40 is opened after power is off, so that the stirring rod 41 can enter the box body 27 to disrupt the debris or burrs in the pile shape inside the box body 27. When the disruption is completed, the conductive block 39 is powered on, and the conductive block 39 conducts electricity to the conductive spring 40. When the spring is powered on, it is equivalent to an energized solenoid, and each turn of the spring is equivalent to a circular current. The current direction in each turn of the spring is the same. According to the mutual attraction between currents in the same direction, each turn of the spring attracts the adjacent spring, causing the conductive spring 40 to contract, and the conductive spring 40 drives the stirring rod 41 back to its original position.

[0059] As an embodiment of the present invention, refer to Figures 3 to 10 The cross-sectional shape of the pressing block 30 is set to a right-angled trapezoid, one end of the telescopic spring 31 is fixedly connected to the inside of the stable groove 28, and the other end of the telescopic spring 31 is fixedly connected to the outer wall of the pressing block 30, and the cross-sectional shape of the stable groove 28 is set to a square.

[0060] The cross-sectional shape of the pressing block 30 is a right-angled trapezoid, and the slide groove 32 is located on the inclined surface of the pressing block 30, so that the pressing block 30 can drive the slider 33 to move, and the slider 33 slides inside the slide groove 32. The slider 33 drives the engaging rod 34 to move, so that the engaging rod 34 moves out from the engaging groove 35, pulling the box body 27, so that the box body 27 moves out from the second groove 25.

[0061] As an embodiment of the present invention, refer to Figures 3 to 5 The number of the connecting grooves 10 is set to be multiple, and the multiple connecting grooves 10 are distributed in a circular array inside the disc 9, the cross-sectional shape of the air outlet pipe is set to be L-shaped, and the cross-sectional shape of the ventilation groove 14 is set to be circular.

[0062] When the disc 9 rotates, the multiple air bags 12 can intermittently blow air into the ventilation slots 14 so that the gas can blow the debris or burrs from between the first cleaning plate 23 and the second cleaning plate 24 into the discharge pipe 26 .

[0063] As an embodiment of the present invention, refer to Figures 3 to 5 The first one-way valve 16 only allows gas to enter the ventilation groove 14 from the inside of the airbag 12, and the second one-way valve 17 only allows gas to enter the inside of the intake pipe 13 from the outside of the disc 9. The cross-sectional shape of the first groove 5 is set to be circular.

[0064] The first one-way valve 16 and the second one-way valve 17 are both gas one-way valves. When the airbag 12 is exhaling, the second one-way valve 17 can prevent the gas from spraying out from the inside of the intake pipe 13. When the airbag 12 is inhaling, the first one-way valve 16 can prevent the gas from being inhaled from the inside of the ventilation groove 14.

[0065] As an embodiment of the present invention, refer to Figures 3 to 5 The first magnet 19 and the second magnet 20 repel each other, the number of the air intake pipes 13 is set to be multiple, the multiple air intake pipes 13 are evenly distributed inside the disc 9, and the cross-sectional shape of the connecting groove 10 is set to be square.

[0066] The first magnet 19 and the second magnet 20 are both neodymium magnets. When the disc 9 moves in a circular motion, the first magnet 19 and the second magnet 20 repel each other so that the airbag 12 can reciprocate, causing debris or burrs to be blown into the discharge pipe 26 from between the first cleaning plate 23 and the second cleaning plate 24.

[0067] As an embodiment of the present invention, refer to Figures 8 to 10 One end of the conductive spring 40 is electrically connected to the conductive block 39 , and the other end of the conductive spring 40 is fixedly connected to the outer wall of the stirring rod 41 . The number of the rotating plates 42 is set to two, and the two rotating plates 42 are symmetrically distributed on the outer wall of the stirring rod 41 .

[0068] The stirring rod 41 can be powered on and off according to actual needs, and the length of the stirring rod 41 can be changed to prevent burrs or debris inside the box body 27 from forming a pile of grains.

[0069] Working principle: When the device is used, when the film reaches the top of the guide roller 4, the motor 7 is started, and the output shaft of the motor 7 drives the driving shaft 8 to rotate, and the driving shaft 8 drives the disc 9 to rotate, and the disc 9 drives the airbag 12 to move in a circle. When the airbag 12 passes the first magnet 19, the first magnet 19 and the second magnet 20 repel each other, causing the second magnet 20 to drive the slide 15 to move, so that the slide 15 slides inside the connecting groove 10, and the slide 15 squeezes the airbag 12 at the same time, and the airbag 12 discharges its internal gas into the ventilation groove 14 through the first one-way valve 16. When the airbag 12 is away from the first magnet 19, the slide 15 will move inside the connecting groove 10 due to the force thrown out by the disc 9, and the slide 15 drives the airbag 12 to move, causing the airbag 12 to move. The bag 12 will inhale air through the second one-way valve 17 through the air inlet pipe 13, and at the same time the driving shaft 8 will drive the guide roller 4 to rotate through the transmission belt 18. When the guide roller 4 rotates, the first cleaning plate 23 cleans the outer wall of the guide roller 4, so that the debris or burrs cleaned from the outer wall of the guide roller 4 fall onto the connecting plate 22. The height of the first cleaning plate 23 is greater than the height of the second cleaning plate 24, so that the impurities cleaned from the outer wall of the guide roller 4 by the first cleaning plate 23 can fall onto the connecting plate 22 between the first cleaning plate 23 and the second cleaning plate 24. At this time, the gas is blown from the ventilation slot 14 into the space between the first cleaning plate 23 and the second cleaning plate 24, and the debris or burrs are blown from the space between the first cleaning plate 23 and the second cleaning plate 24 into the inside of the discharge pipe 26. When the gas blows the debris or burrs into the discharge pipe 26, the gas will cause the debris or burrs to fall into the discharge pipe 26. When the chips or burrs are blown into the discharge pipe 26 from between the first cleaning plate 23 and the second cleaning plate 24, the chips or burrs will rush out of the discharge pipe 26 and fall into the box body 27. When the chips or burrs inside the box body 27 need to be cleaned, the pressing rod 29 is pressed, and the pressing rod 29 drives the pressing block 30 to move. The pressing block 30 squeezes the telescopic spring 31. The cross-sectional shape of the pressing block 30 is a right-angled trapezoid. The slide groove 32 is located on the inclined surface of the pressing block 30, so that the pressing block 30 can drive the slider 33 to move. The slider 33 slides inside the slide groove 32. The slider 33 drives the engaging rod 34 to move, so that the engaging rod 34 moves out from the engaging groove 35, and the box body 27 is pulled, so that the box body 27 moves out from the second groove 25. When the guide roller 4 moves, The guide roller 4 will drive the rotating rod 37 to rotate through the steering gear 43, and the rotating rod 37 will drive the stirring rod 41 to rotate, and the stirring rod 41 will drive the rotating plate 42 to move in a circle, so as to break up the debris or burrs ejected from the discharge pipe 26, so that they fall into the box body 27 more evenly. When the debris or burrs inside the box body 27 appear in a pile shape, the conductive block 39 is powered off, and the conductive spring 40 is opened after power is lost, so that the stirring rod 41 can enter the box body 27 to disrupt the debris or burrs in the pile shape inside the box body 27. When the disruption is completed, the conductive block 39 is powered on, and the conductive block 39 conducts electricity to the conductive spring 40. When the spring is powered on, it is equivalent to an energized solenoid, and each turn of the spring is equivalent to a circular current, and the current direction in each turn of the spring is the same.According to the mutual attraction between currents in the same direction, each turn of the spring attracts the adjacent spring, causing the conductive spring 40 to contract, and the conductive spring 40 drives the stirring rod 41 to return to its original position. The cross-sectional shape of the pressing block 30 is a right-angled trapezoid, and the slide groove 32 is located on the inclined surface of the pressing block 30, so that the pressing block 30 can drive the slider 33 to move, and the slider 33 slides inside the slide groove 32. The slider 33 drives the engaging rod 34 to move, so that the engaging rod 34 moves out from the inside of the engaging groove 35, and the box body 27 is pulled to move the box body 27 out from the inside of the second groove 25. The first The one-way valve 16 and the second one-way valve 17 are both gas one-way valves. When the airbag 12 is expelling gas, the second one-way valve 17 can prevent the gas from being ejected from the inside of the intake pipe 13. When the airbag 12 is inhaling gas, the first one-way valve 16 can prevent the gas from being inhaled from the inside of the ventilation slot 14. The first magnet 19 and the second magnet 20 are both neodymium magnets. When the disc 9 moves in a circular motion, the first magnet 19 and the second magnet 20 repel each other so that the airbag 12 can reciprocate, so that the debris or burrs can be blown into the inside of the discharge pipe 26 from between the first cleaning plate 23 and the second cleaning plate 24.

[0070] 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 blown film forming device for a co-extruded polyethylene film, comprising a working frame (1); a first fixed plate (2) fixedly connected to one side of an outer wall of the working frame (1); a second fixed plate (3) fixedly connected to a side of the outer wall of the working frame (1) away from the first fixed plate (2); a guide roller (4) rotatably connected to one side of the outer wall of the first fixed plate (2), and the guide roller (4) is rotatably connected to the outer wall of the second fixed plate (3); characterized in that: A first groove (5) is provided inside the first fixing plate (2); a box body (6) is fixedly connected to the outer wall of the first fixing plate (2); a motor (7) is fixedly connected to the inside of the box body (6); one end of the output shaft of the motor (7) is fixedly connected to a driving shaft (8); one end of the driving shaft (8) passes through the first groove (5); the driving shaft (8) is rotatably connected to the first fixing plate (2); a disk (9) is fixedly connected to the outer wall of the driving shaft (8); a connecting groove (10) is provided on the outer wall of the disk (9); a stabilizing plate (11) is fixedly connected to the inside of the connecting groove (10); an air bag (12) passes through the inside of the stabilizing plate (11); an air intake pipe (13) is fixedly connected to the outer wall of the air bag (12); the air intake pipe (13) is connected to the air bag (12) (12), a ventilation groove (14) is provided inside the driving shaft (8), the airbag (12) runs through the ventilation groove (14), the airbag (12) is connected to the ventilation groove (14), one end of the airbag (12) is fixedly connected to a slide plate (15), the end of the airbag (12) away from the slide plate (15) is fixedly connected to a first one-way valve (16), a connecting plate (22) is provided at the bottom end of the guide roller (4), the top of the connecting plate (22) is fixedly connected to a first cleaning plate (23), the top of the connecting plate (22) is fixedly connected to a second cleaning plate (24), one end of the driving shaft (8) runs through between the first cleaning plate (23) and the second cleaning plate (24), the top of the first cleaning plate (23) is in contact with the outer wall of the guide roller (4); The slide plate (15) is slidably connected to the connecting groove (10); one end of the air intake pipe (13) away from the air bag (12) passes through the outer wall of the disc (9); one end of the air intake pipe (13) is fixedly connected to a second one-way valve (17); a transmission belt (18) is provided between the driving shaft (8) and the guide roller (4); the driving shaft (8) is transmission-connected to the guide roller (4) through the transmission belt (18); a first magnet (19) is fixedly connected inside the first groove (5); a second magnet (20) is fixedly connected to the outer wall of the slide plate (15); both the first magnet (19) and the second magnet (20) are neodymium magnets; a pipe (21) passes through the first groove (5); the pipe (21) is fixedly connected to the first fixed plate (2); and the pipe (21) is connected to the first groove (5).

2. The blown film forming equipment for a co-extruded polyethylene film according to claim 1, characterized in that: The outer wall of the second fixed plate (3) is provided with a second groove (25), and a discharge pipe (26) is fixedly connected inside the second groove (25). The discharge pipe (26) is communicated with the second groove (25), and one end of the discharge pipe (26) passes through between the first cleaning plate (23) and the second cleaning plate (24).

3. The film blowing molding equipment for a co-extruded polyethylene film according to claim 2, characterized in that: The second groove (25) is slidably connected to a box body (27), a stabilizing groove (28) is provided inside the box body (27), a pressing rod (29) runs through the stabilizing groove (28), the pressing rod (29) is slidably connected to the box body (27), one end of the pressing rod (29) is fixedly connected to a pressing block (30), a telescopic spring (31) is provided between the pressing block (30) and the stabilizing groove (28), and the pressing block ( A slide groove (32) is provided on the outer wall of the box body (27), a slider (33) is slidably connected inside the slide groove (32), a locking rod (34) is hinged on the top of the slider (33), one end of the locking rod (34) passes through the outer wall of the box body (27), the locking rod (34) is slidably connected to the box body (27), and a locking groove (35) is provided inside the second groove (25), and the locking groove (35) is locked with one end of the locking rod (34).

4. The blown film forming equipment for a co-extruded polyethylene film according to claim 2, characterized in that: A third groove (36) is provided inside the second fixed plate (3), a rotating rod (37) is provided inside the third groove (36), one end of the rotating rod (37) passes through the second groove (25), the rotating rod (37) is rotatably connected to the second fixed plate (3), a connecting groove (38) is provided inside the rotating rod (37), a conductive block (39) is fixedly connected inside the connecting groove (38), a stirring rod (41) passes through the connecting groove (38), the stirring rod (41) is slidably connected to the rotating rod (37), a conductive spring (40) is provided between the stirring rod (41) and the conductive block (39), a rotating plate (42) is fixedly connected to the outer wall of the stirring rod (41), and a steering gear (43) is provided between the rotating rod (37) and the guide roller (4).

5. The film blowing molding equipment for co-extruded polyethylene film according to claim 3, characterized in that: The cross-sectional shape of the pressing block (30) is set to be a right-angled trapezoid, one end of the telescopic spring (31) is fixedly connected to the inside of the stabilizing groove (28), the other end of the telescopic spring (31) is fixedly connected to the outer wall of the pressing block (30), and the cross-sectional shape of the stabilizing groove (28) is set to be a square.

6. The blown film forming equipment for a co-extruded polyethylene film according to claim 1, characterized in that: The number of the communication grooves (10) is set to be multiple, and the multiple communication grooves (10) are distributed in a circular array inside the disc (9), the cross-sectional shape of the air outlet pipe is set to be L-shaped, and the cross-sectional shape of the ventilation groove (14) is set to be circular.

7. The blown film forming equipment for a co-extruded polyethylene film according to claim 1, characterized in that: The first one-way valve (16) only allows gas to enter the ventilation groove (14) from the inside of the airbag (12), and the second one-way valve (17) only allows gas to enter the inside of the air intake pipe (13) from the outside of the disc (9), and the cross-sectional shape of the first groove (5) is set to be circular.

8. The film blowing molding equipment for co-extruded polyethylene film according to claim 1, characterized in that: The first magnet (19) and the second magnet (20) repel each other, the number of the air intake pipes (13) is set to be multiple, the multiple air intake pipes (13) are evenly distributed inside the disc (9), and the cross-sectional shape of the connecting groove (10) is set to be square.

9. The film blowing molding equipment for co-extruded polyethylene film according to claim 4, characterized in that: One end of the conductive spring (40) is electrically connected to the conductive block (39), and the other end of the conductive spring (40) is fixedly connected to the outer wall of the stirring rod (41). The number of the rotating plates (42) is set to two, and the two rotating plates (42) are symmetrically distributed on the outer wall of the stirring rod (41).

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