阅读说明：本技术 一种高阻隔多层共挤膜的加工设备和制备方法 (Processing equipment and preparation method of high-barrier multilayer co-extruded film ) 是由 陈�峰 杨世京 吴生寅 于 2021-08-04 设计创作，主要内容包括：本发明涉及一种高阻隔多层共挤膜的加工设备和制备方法；一种高阻隔多层共挤膜的加工设备包括：底板、龙门架、挤出吹膜机构、膨胀稳定机构和在薄膜吹膜生产完成后用于挤压工作的挤压成型机构；龙门架固定设置在底板上端中部；挤出吹膜机构设置在龙门架内部下端；膨胀稳定机构设置在龙门架中部；挤压成型机构设置在龙门架内部上端。本发明的有益之处在于,通过将挤出吹膜机构的出风口与膨胀稳定机构的稳定结构联动在一起,可以在改变膜泡直径时自适应调节出风角度以契合所吹出膜泡的直径。(The invention relates to a processing device and a preparation method of a high-barrier multilayer co-extruded film; a processing device of a high-barrier multilayer co-extrusion film comprises: the device comprises a base plate, a portal frame, an extrusion film blowing mechanism, an expansion stabilizing mechanism and an extrusion forming mechanism for extrusion work after film blowing production is finished; the portal frame is fixedly arranged in the middle of the upper end of the bottom plate; the extrusion film blowing mechanism is arranged at the lower end in the portal frame; the expansion stabilizing mechanism is arranged in the middle of the portal frame; the extrusion forming mechanism is arranged at the upper end inside the portal frame. The invention has the beneficial effects that the air outlet of the extrusion film blowing mechanism is linked with the stable structure of the expansion stabilizing mechanism, so that the air outlet angle can be adaptively adjusted to fit the diameter of the blown film bubble when the diameter of the film bubble is changed.)

1. A processing device of a high-barrier multilayer co-extrusion film comprises: the device comprises a base plate, a portal frame, an extrusion film blowing mechanism, an expansion stabilizing mechanism and an extrusion forming mechanism for extrusion work after film blowing production is finished; the portal frame is fixedly arranged in the middle of the upper end of the bottom plate; the extrusion film blowing mechanism is arranged at the lower end in the portal frame; the expansion stabilizing mechanism is arranged in the middle of the portal frame; the extrusion forming mechanism is arranged at the upper end inside the portal frame; it is characterized in that the preparation method is characterized in that,

the extrusion film blowing mechanism comprises: the screw injection molding machine comprises a shell, a flow channel, an air outlet ring, a cooling ring, a pump body and an air return pipe for blowing air flow to flow back;

the screw injection molding machine is fixedly arranged on two sides of the lower end in the portal frame; the shell is fixedly arranged in the middle of the lower end of the inner side of the portal frame; the flow passage is arranged in the side wall of the inner side of the shell; the liquid outlet end of the screw injection molding machine is communicated with the flow passage through a pipeline; the air outlet ring is fixedly arranged in the middle of the inner side of the shell; the cooling ring is fixedly arranged at the upper end of the outer side surface of the shell; the pump body is fixedly arranged at the lower end of the shell; the air outlet of the pump body is communicated with the air outlet ring through a pipeline; the air return pipe is fixedly arranged in the middle of the inner side of the air outlet ring;

the expansion stabilizing mechanism includes: the device comprises a fixed frame, a first elastic telescopic rod, a connecting rod and a stabilizing wheel for limiting the expansion range of a bubble to stabilize the bubble; the fixed frame is fixedly arranged in the middle of the inner side of the portal frame; the first elastic telescopic rods are uniformly and fixedly arranged around the inner part of the fixed frame at intervals; the connecting rod is fixedly arranged at the movable end of the first elastic telescopic rod; the stabilizing wheels are uniformly and movably arranged on the outer side surface of the connecting rod at intervals through a rotating shaft;

the extrusion forming mechanism comprises: the device comprises a guide wheel, a first extrusion wheel and a second extrusion wheel; the guide wheel is movably arranged at the upper end in the portal frame through a rotating shaft; the first extrusion wheel is movably arranged at the upper end of the guide wheel in the portal frame through a rotating shaft; the second extrusion wheel is movably arranged at the upper end of the first extrusion wheel through a rotating shaft;

the processing equipment for the high-barrier multilayer co-extrusion film further comprises: the linkage mechanism and the adjusting mechanism are used for adaptively adjusting the air outlet angle in cooperation with the linkage mechanism; the linkage mechanism is arranged between the extrusion film blowing mechanism and the expansion stabilizing mechanism; the adjusting mechanism is arranged at the upper end of the extrusion film blowing mechanism;

the link gear includes: the device comprises an electric push rod, a moving ring, a transmission rod, a first extrusion block, a second elastic telescopic rod, an extrusion ring, a first magnetic ring and a second magnetic ring which is matched with the first magnetic ring to perform transmission work; the electric push rods are fixedly arranged on two sides of the lower end of the fixed frame in the portal frame; the movable ring is fixedly arranged at the telescopic shaft end of the electric push rod; the movable ring is sleeved outside the fixed frame; the transmission rod is fixedly arranged on the periphery of the outer side surface of the movable ring; the first extrusion block is fixedly arranged at the upper end of the transmission rod; the second extrusion block is fixedly arranged at the lower end of the connecting rod; the outer side surfaces of the first extrusion block and the second extrusion block are mutually attached, and the attaching surfaces of the first extrusion block and the second extrusion block are inclined surfaces; the second elastic telescopic rods are fixedly arranged at the two sides of the air outlet ring at the upper end of the shell; the extrusion ring is fixedly arranged at the upper end of the second elastic telescopic rod; the first magnetic ring is fixedly arranged at the lower end of the movable ring; the second magnetic ring is fixedly arranged at the upper end of the extrusion ring;

the adjustment mechanism includes: a rotating rod and an elastic layer; the rotating rod is movably arranged at the edge of the outer side surface of the air outlet ring through a rotating shaft; the elastic layer is fixedly arranged between the rotating rods; the rotating shaft where the rotating rod is located is provided with a torsional spring which can automatically drive the rotating rod to rotate and open.

2. The processing equipment of the high-barrier multilayer co-extrusion film according to claim 1,

the processing equipment for the high-barrier multilayer co-extrusion film further comprises: the winding mechanism is used for accommodating the processed film; the winding mechanism is arranged at the upper end of the portal frame; the winding mechanism includes: the device comprises a bracket, a cross rod, a rolling roller and an adhesion layer; the bracket is fixedly arranged on one side of the upper end of the portal frame; the cross rod is movably arranged at the upper end of the bracket through a rotating shaft; the winding rollers are movably arranged on two sides of the cross rod through rotating shafts; the adhesion layer is arranged on the outer side surface of the winding roller.

3. The processing equipment of the high-barrier multilayer co-extrusion film as claimed in claim 2,

the outer side surface of the stabilizing wheel is provided with an arc-shaped groove for being attached to the surface of the film bubble.

4. The processing equipment of the high-barrier multilayer co-extrusion film as claimed in claim 2,

the magnetic poles close to the first magnetic ring and the second magnetic ring are the same.

5. The processing equipment of the high-barrier multilayer co-extrusion film as claimed in claim 2,

the extrusion ring cover is established the dwang outside, and the extrusion ring with dwang outside surface is laminated each other.

6. The processing equipment of the high-barrier multilayer co-extrusion film as claimed in claim 2,

and a locking bolt is arranged on the rotating shaft where the cross rod is located.

7. The processing equipment of the high-barrier multilayer co-extrusion film as claimed in claim 2,

the processing equipment for the high-barrier multilayer co-extrusion film further comprises: the trigger mechanism is used for feeding back the pressure on the membrane bubble to help regulate the air output of the pump body; the trigger mechanism is arranged inside the fixed frame;

the trigger mechanism includes: the device comprises a fixed pipe, a moving rod, a contact wheel, a first pressure sensor, a second pressure sensor and a spring; the fixed pipe is fixedly arranged on one side of the lower end in the fixed frame; the movable rod is movably inserted into one side of the inner part of the fixed rod; the contact wheel is movably arranged at one end of the movable rod far away from the fixed pipe through a rotating shaft; the first pressure sensor is fixedly arranged on one side inside the fixed pipe; the second pressure sensor is fixedly arranged on one side, far away from the first pressure sensor, in the fixed pipe; the spring is disposed inside the fixed pipe between the moving rod and the first pressure sensor.

8. The apparatus for processing a high barrier multilayer co-extrusion film as claimed in claim 7, wherein the first pressure sensor and the second pressure sensor are electrically connected to the pump body.

9. The processing equipment for the high-barrier multilayer co-extrusion film according to claim 2, wherein the axial distances of the first extrusion wheel and the second extrusion wheel are sequentially close.

10. A preparation method of a high-barrier multilayer co-extrusion film is characterized by being prepared by adopting the processing equipment of the high-barrier multilayer co-extrusion film as claimed in any one of claims 2 to 9, and the preparation method of the high-barrier multilayer co-extrusion film comprises the following steps:

step one, the extrusion film blowing mechanism finishes film extrusion and film blowing operation;

secondly, the extrusion forming mechanism extrudes and compounds the thin film formed by the extrusion film blowing mechanism after the film blowing operation is finished;

and step three, the rolling mechanism rolls the extruded and compounded film.

Technical Field

The invention relates to the technical field of co-extruded film production, in particular to processing equipment and a preparation method of a high-barrier multilayer co-extruded film.

Background

The high-barrier multilayer co-extrusion film is formed by simultaneously extruding a material with strong gas barrier property and polyolefin with strong heat seaming property and water barrier property, and is a film with a multilayer structure.

The high-barrier multilayer co-extruded film is produced by a co-extrusion composite film blowing process, which comprises the steps of respectively melting and extruding various resins with different functions by two or more extruders, converging the resins in a die head or outside the die head through respective runners, and then combining the resins through blowing, cooling and extruding. The process not only greatly simplifies the production process, but also has less material consumption, and can reduce the consumption of raw materials and the production cost; compared with other processes, the process for producing the composite packaging material with the same structure can save the production cost by 30 percent.

When the current film production equipment capable of realizing the co-extrusion composite film blowing process is used, when the diameter of a blown film bubble needs to be changed, the angle of the blown air flow in the air outlet ring cannot be correspondingly changed as required, the following conditions can occur, when the diameter of the blown film bubble is reduced, the condition that the blown film bubble is blown broken if the angle of the blown air flow in the air outlet ring is large can be easily caused, and when the diameter of the blown film bubble is enlarged, the condition that the blown film bubble cannot be fully expanded if the angle of the blown air flow in the air outlet ring is small can be easily caused, so that the conditions that interlayer film adhesion is not uniform and the thickness of the blown film is not up to standard can occur.

Disclosure of Invention

The invention aims to provide processing equipment and a preparation method of a high-barrier multilayer co-extrusion film, which aim to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a processing device of a high-barrier multilayer co-extrusion film comprises: the device comprises a base plate, a portal frame, an extrusion film blowing mechanism, an expansion stabilizing mechanism and an extrusion forming mechanism used for extrusion after the film blowing production is finished. The portal frame is fixedly arranged in the middle of the upper end of the bottom plate. The extrusion film blowing mechanism is arranged at the lower end in the portal frame. The expansion stabilizing mechanism is arranged in the middle of the portal frame. The extrusion forming mechanism is arranged at the upper end inside the portal frame.

The extrusion film blowing mechanism comprises: the screw injection molding machine comprises a screw injection molding machine, a shell, a flow channel, an air outlet ring, a cooling ring, a pump body and an air return pipe for blowing air flow to return.

The screw injection molding machine is fixedly arranged on two sides of the lower end in the portal frame. The shell is fixedly arranged in the middle of the lower end of the inner side of the portal frame. The flow passage is provided in the case inside side wall. The liquid outlet end of the screw injection molding machine is communicated with the flow passage through a pipeline. The air outlet ring is fixedly arranged in the middle of the inner side of the shell. The cooling ring is fixedly arranged at the upper end of the outer side surface of the shell. The pump body is fixedly arranged at the lower end of the shell. The air outlet of the pump body is communicated with the air outlet ring through a pipeline. The return air pipe is fixedly arranged in the middle of the inner side of the air outlet ring.

The expansion stabilization mechanism includes: the device comprises a fixed frame, a first elastic telescopic rod, a connecting rod and a stabilizing wheel for limiting the expansion range of the bubble to stabilize the bubble. The fixed frame is fixedly arranged in the middle of the inner side of the portal frame. The first elastic telescopic rods are uniformly and fixedly arranged around the inside of the fixed frame at intervals. The connecting rod is fixedly arranged at the movable end of the first elastic telescopic rod. The stabilizing wheels are movably arranged on the outer side surface of the connecting rod at uniform intervals through a rotating shaft.

The extrusion forming mechanism comprises: the guide wheel, the first extrusion wheel, the second extrusion wheel. The guide wheel is movably arranged at the upper end inside the portal frame through a rotating shaft. The first extrusion wheel is movably arranged at the upper end of the guide wheel in the portal frame through a rotating shaft. The second extrusion wheel is movably arranged at the upper end of the first extrusion wheel through a rotating shaft.

The processing equipment of the high-barrier multilayer co-extruded film further comprises: linkage mechanism and be used for cooperating the adjustment mechanism of linkage mechanism self-adaptation regulation air-out angle. The linkage mechanism is arranged between the extrusion film blowing mechanism and the expansion stabilizing mechanism. The adjusting mechanism is arranged at the upper end of the extrusion film blowing mechanism.

The link gear includes: the device comprises an electric push rod, a moving ring, a transmission rod, a first extrusion block, a second elastic telescopic rod, an extrusion ring, a first magnetic ring and a second magnetic ring which is matched with the first magnetic ring to perform transmission work. The electric push rods are fixedly arranged on two sides of the lower end of the fixed frame in the portal frame. The movable ring is fixedly arranged at the telescopic shaft end of the electric push rod. The movable ring is sleeved outside the fixed frame. The transmission rod is fixedly arranged on the periphery of the outer side surface of the movable ring. The first extrusion piece is fixedly arranged at the upper end of the transmission rod. The second extrusion piece is fixedly arranged at the lower end of the connecting rod. The outer side surfaces of the first extrusion block and the second extrusion block are mutually attached, and the attaching surfaces of the first extrusion block and the second extrusion block are inclined surfaces. The second elastic telescopic rod is fixedly arranged on two sides of the air outlet ring at the upper end of the shell. The extrusion ring is fixedly arranged at the upper end of the second elastic telescopic rod. The first magnetic ring is fixedly arranged at the lower end of the movable ring. The second magnetic ring is fixedly arranged at the upper end of the extrusion ring.

The adjustment mechanism includes: dwang, elastic layer. The dwang passes through the pivot activity and sets up at air-out ring outside surface border. The elastic layer is fixedly arranged between the rotating rods. The rotating shaft where the rotating rod is arranged is provided with a torsional spring which can automatically drive the rotating rod to rotate and open.

As a further scheme of the invention: the processing equipment of the high-barrier multilayer co-extruded film further comprises: a winding mechanism for taking in the good film of processing. The winding mechanism is arranged at the upper end of the portal frame. The winding mechanism comprises: support, horizontal pole, rolling cylinder, adhesion layer. The support is fixedly arranged on one side of the upper end of the portal frame. The cross rod is movably arranged at the upper end of the bracket through a rotating shaft. The winding rollers are movably arranged at two sides of the cross rod through rotating shafts. The adhesion layer is arranged on the outer side surface of the winding roller.

As a further scheme of the invention: the outer side surface of the stabilizing wheel is provided with an arc-shaped groove for being attached to the surface of the film bubble.

As a further scheme of the invention: the magnetic poles close to the first magnetic ring and the second magnetic ring are the same. The first magnetic ring and the second magnetic ring can be driven when being close to each other through the repulsion of the same poles.

As a further scheme of the invention: the extrusion ring is sleeved on the outer side of the rotating rod, and the surface of the extrusion ring and the surface of the outer side of the rotating rod are mutually attached. The rotating rod can be extruded and simultaneously tightened through the extrusion ring so as to adjust the rotating angle of the rotating rod.

As a further scheme of the invention: the rotating shaft where the cross rod is arranged is provided with a locking bolt. The cross rod can be controlled to be incapable of rotating when not required to rotate through the locking bolt.

As a further scheme of the invention: the high-barrier multilayer co-extrusion film processing equipment further comprises: and the triggering mechanism is used for feeding back the pressure borne by the membrane bubble to help regulate the air output of the pump body. The trigger mechanism is arranged inside the fixed frame.

The trigger mechanism includes: the device comprises a fixed pipe, a moving rod, a contact wheel, a first pressure sensor, a second pressure sensor and a spring. The fixed pipe is fixedly arranged on one side of the lower end in the fixed frame. The movable rod is movably inserted into one side of the fixed rod. The contact wheel is movably arranged at one end of the movable rod far away from the fixed pipe through a rotating shaft. The first pressure sensor is fixedly arranged on one side inside the fixed pipe. The second pressure sensor is fixedly arranged on one side, far away from the first pressure sensor, in the fixed pipe. The spring is arranged between the movable rod inside the fixed pipe and the first pressure sensor.

As a further scheme of the invention: the first pressure sensor, the second pressure sensor and the pump body are electrically connected. The first pressure sensor and the second pressure sensor are used for feeding back the pressure on the film bubble to help regulate the air output of the pump body.

As a further scheme of the invention: the distance between the axle centers of the first extrusion wheel and the second extrusion wheel is sequentially close. The first extrusion wheel and the second extrusion wheel which are sequentially close to each other in axle center distance can gradually extrude and bond the multilayer films together to form a complete multilayer film.

A preparation method of a high-barrier multilayer co-extruded film comprises the following steps:

step one, the extrusion film blowing mechanism completes film extrusion and film blowing operation. Before extruding the film, plastic particles are added into a screw injection molding machine to be melted and injected into the flow channel under pressure. The molten material flowing out of the flow channel is now cooled by the water flow inside the cooling ring to form a film bubble. The bubble is then drawn manually through the guide wheel, the first squeeze wheel and the second squeeze wheel. And then the film bubble can be automatically guided and drawn to move from bottom to top by the rotating first extrusion wheel and the second extrusion wheel. Then, the obtained air ring is subjected to annular air blowing through the pump body to blow the film bubble open; thus, the extrusion blowing production operation of the film can be carried out;

and step two, the extrusion forming mechanism extrudes and compounds the thin film formed by the film blowing operation completed by the film blowing mechanism.

And step three, rolling the extruded and compounded film by a rolling mechanism. The collection rate and discharge rate should be controlled to 0.05M per second. Too high a collection rate can result in too much wind-up resistance. Easily causing film breakage. The surface adhesion of the film is reduced, and the toughness and the overall structural strength of the material are reduced. And too low rolling speed can lead to too small rolling tension to lead to the change of the flatness of the rolling surface of the film (easy to wrinkle) in the transportation and storage processes, thus leading to the incapability of being used on a machine. At the same time, when winding, care should be taken that the diameter of the winding roller is larger and larger as the film to be wound is more and more. The angular speed of the winding drum rotation should be reduced at this time depending on the diameter of the winding drum. So as to maintain a uniform linear velocity as the take-up roller rotates. Thereby it takes place to prevent when the rolling tension is inhomogeneous to lead to unreeling inhomogeneous condition when later stage is gone on the computer and is used. The nylon layer is added to increase the overall strength of the multilayer film during production in order to increase the overall strength of the film. While the nylon layer has good transparency and puncture resistance, its barrier properties are poor. Silicon oxide can be plated on the nylon layer surface of the film when the film is produced so as to improve the air tightness and the barrier performance of the whole film.

Compared with the prior art, the invention has the beneficial effects that: the air outlet angle can be adaptively adjusted to fit the diameter of the blown film bubble when the diameter of the film bubble is changed through the linkage mechanism and the adjusting mechanism.

When the thickness of the bubble needs to be changed, the diameter of the bubble is changed, when the diameter of the bubble needs to be enlarged, the movable ring is driven to move downwards through the electric push rod, so that the first extrusion block can not extrude the second extrusion block any more, at the moment, the connecting rods can automatically move away from each other and open under the action of the first elastic telescopic rod, so that the stabilizing wheels can move away from each other and open, the bubble can expand in a larger space, when the movable ring moves downwards, the first magnetic ring and the second magnetic ring can be close to each other, at the moment, the second magnetic ring can drive the extrusion rings to move downwards under the action of the repulsion of the same poles, so that the extrusion rings can not extrude the rotating rod any more, at the moment, the rotating rods can rotate away from each other and open under the action of the torsion spring, the air outlet angle is enlarged, and the air flow can fully expand the bubble in a wider angle, on the contrary, when the diameter of the film bubble needs to be reduced, the movable ring is pushed to move upwards through the electric push rod, the first extrusion block and the second extrusion block are mutually extruded to enable the connecting rod to be tightened, meanwhile, the first magnetic ring and the second magnetic ring are kept away, the second elastic telescopic rod pushes the extrusion ring to move upwards, so that the rotating rod is tightened, and the air flow angle is reduced to prevent the film bubble from being blown through.

The whole transmission of device is transmitted through magnetic force contactless by first magnetic ring and second magnetic ring, is applicable to the region that is got up by the separation of film bubble, need not complicated control mechanism directly to adjust through the linkage simultaneously, and it is comparatively convenient to use.

Can real time monitoring feedback membrane bubble pressure help adjust pump body air output through trigger mechanism, when the work of blowing the membrane goes on, the membrane bubble surface can be with contact wheel contact, and if the air output great dynamics that leads to the membrane bubble inflation to receive is great, can make the carriage release lever degree of moving to the right great, otherwise can make the carriage release lever move left, can obtain the degree that the carriage release lever removed this moment and the atress degree of membrane bubble this moment through first pressure sensor and second pressure sensor, thereby make things convenient for the pump body to carry out the control of air output.

The film that produces can be accomodate by left rolling cylinder is existing, and accomodating and accomplishing the back installation whole and can not shut down, only needs the clockwise rotation horizontal pole for the adhesion layer on rolling cylinder surface on right side is in the same place with the film adhesion, only needs to cut off the film between two rolling cylinders about this moment, can accomplish rolling cylinder's change, and whole change process need not to shut down, and simple structure changes the convenience.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description of the invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the overall structure of the high-barrier multilayer co-extrusion film processing equipment of the invention.

FIG. 2 is a top view of the air outlet ring of the high barrier multilayer co-extruded film processing apparatus of FIG. 1.

Fig. 3 is an overall structural view of an extrusion film blowing mechanism of the high-barrier multilayer co-extrusion film processing device in fig. 1.

Fig. 4 is an overall structural view of the expansion stabilizing mechanism of the high-barrier multilayer co-extruded film processing apparatus of fig. 1.

FIG. 5 is an overall structural view of a trigger mechanism of the high-barrier multilayer co-extruded film processing equipment in FIG. 1.

FIG. 6 is a top view of the mounting frame of the high barrier multilayer co-extruded film processing apparatus of FIG. 1.

Fig. 7 is an enlarged view at a in fig. 3.

List of reference numerals: a high barrier multilayer co-extrusion film processing device 100; a base plate 10; a gantry 20; an extrusion film blowing mechanism 30; a screw injection molding machine 31; a housing 32; a flow passage 33; an air outlet ring 34; a cooling ring 35; a pump body 36; a return duct 37; an expansion stabilizing mechanism 40; a fixed frame 41; a first elastic telescopic rod 42; a connecting rod 43; a stabilizing wheel 44; an extrusion molding mechanism 50; a guide wheel 51; a first pressing wheel 52; the second pressing wheel 53; a link mechanism 60; an electric push rod 61; a shift ring 62; a transmission rod 63; a first extrusion block 64; a second extrusion block 65; a second flexible telescoping rod 66; a squeeze ring 67; a first magnetic ring 68; a second magnetic ring 69; an adjustment mechanism 70; the rotating lever 71; an elastic layer 72; a winding mechanism 80; a bracket 81; a cross bar 82; a take-up drum 83; an adhesive layer 84; a trigger mechanism 90; a fixed tube 91; a travel bar 92; a contact wheel 93; a first pressure sensor 94; a second pressure sensor 95; a spring 96.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 7, in an embodiment of the present invention, a processing apparatus 100 for a high-barrier multilayer co-extruded film includes: the device comprises a bottom plate 10, a portal frame 20, an extrusion film blowing mechanism 30, an expansion stabilizing mechanism 40 and an extrusion forming mechanism 50 used for extrusion work after the film blowing production is finished. The portal frame 20 is fixedly arranged in the middle of the upper end of the bottom plate 10. The extrusion film blowing mechanism 30 is arranged at the lower end inside the portal frame 20. The expansion stabilizing mechanism 40 is arranged in the middle of the portal frame 20. The extrusion molding mechanism 50 is disposed at the upper end inside the gantry 20.

The extrusion film blowing mechanism 30 includes: the screw injection molding machine 31, the shell 32, the flow channel 33, the air outlet ring 34, the cooling ring 35, the pump body 36 and the air return pipe 37 for blowing the expanding air flow to return. The two screw injection molding machines 31 can respectively melt different film materials to flow into the flow channel 33. Are initially blown up during discharge at the discharge opening of the flow channel 33. In the subsequent further inflation and pressing, a film is formed. Meanwhile, 3 or more screw injection molding machines 31 can be arranged according to the processing requirement. And a plurality of flow passages 33 are opened accordingly.

The screw injection molding machine 31 is fixedly arranged at two sides of the lower end inside the portal frame 20. The shell 32 is fixedly arranged in the middle of the lower end of the inner side of the portal frame 20. The flow passage 33 is provided in the side wall inside the housing 32. The liquid outlet end of the screw injection molding machine 31 is communicated with the runner 33 through a pipeline. The air outlet ring 34 is fixedly arranged at the middle part of the inner side of the shell 32. A cooling ring 35 is fixedly provided at the upper end of the outer side surface of the housing 32. A pump body 36 is fixedly disposed at the lower end of the housing 32. The air outlet of the pump body 36 is communicated with the air outlet ring 34 through a pipeline. The return air pipe 37 is fixedly arranged in the middle of the inner side of the air outlet ring 34.

The expansion stabilizing mechanism 40 includes: a fixed frame 41, a first elastic telescopic rod 42, a connecting rod 43 and a stabilizing wheel 44 for stabilizing the bubble by limiting the expansion range of the bubble. The fixed frame 41 is fixedly arranged at the middle part of the inner side of the portal frame 20. The first elastic telescopic rods 42 are uniformly and fixedly arranged around the inside of the fixed frame 41 at intervals. The connecting rod 43 is fixedly arranged at the movable end of the first elastic telescopic rod 42. The stabilizing wheels 44 are movably arranged on the outer side surface of the connecting rod 43 at regular intervals through a rotating shaft.

The extrusion forming mechanism 50 includes: guide wheel 51, first extrusion wheel 52, second extrusion wheel 53. The guide wheel 51 is movably arranged at the upper end inside the portal frame 20 through a rotating shaft. The first pressing wheel 52 is movably arranged at the upper end of the guide wheel 51 in the portal frame 20 through a rotating shaft. The second extrusion wheel 53 is movably arranged at the upper end of the first extrusion wheel 52 through a rotating shaft.

The processing equipment 100 for the high-barrier multilayer co-extruded film further comprises: the linkage mechanism 60 and the adjusting mechanism 70 are used for matching the linkage mechanism 60 to self-adaptively adjust the air outlet angle. The linkage 60 is provided between the extrusion film blowing mechanism 30 and the expansion stabilizing mechanism 40. The adjusting mechanism 70 is provided at the upper end of the extrusion film blowing mechanism 30.

The link mechanism 60 includes: the device comprises an electric push rod 61, a moving ring 62, a transmission rod 63, a first extrusion block 64, a second extrusion block 65, a second elastic expansion rod 66, an extrusion ring 67, a first magnetic ring 68 and a second magnetic ring 69 which is matched with the electric push rod for transmission. The electric push rods 61 are fixedly arranged at two sides of the lower end of the fixed frame 41 in the portal frame 20. The moving ring 62 is fixedly arranged at the telescopic shaft end of the electric push rod 61. The moving ring 62 is sleeved outside the fixed frame 41. The transmission rod 63 is fixedly disposed around the outer side surface of the moving ring 62. The first extrusion block 64 is fixedly arranged at the upper end of the transmission rod 63. The second pressing block 65 is fixedly provided at the lower end of the connecting rod 43. The outer side surfaces of the first extrusion block 64 and the second extrusion block 65 are mutually attached, and the attached surfaces of the first extrusion block 64 and the second extrusion block 65 are inclined surfaces. The second elastic expansion link 66 is fixedly arranged on both sides of the air outlet ring 34 at the upper end of the shell 32. The squeezing ring 67 is fixedly arranged at the upper end of the second elastic expansion link 66. The first magnetic ring 68 is fixedly disposed at the lower end of the moving ring 62. The second magnetic ring 69 is fixedly arranged at the upper end of the extrusion ring 67.

The adjustment mechanism 70 includes: rotating rod 71, elastic layer 72. The rotating rod 71 is movably arranged at the edge of the outer side surface of the air outlet ring 34 through a rotating shaft. The elastic layer 72 is fixedly provided between the rotating levers 71. The rotating shaft of the rotating rod 71 is provided with a torsion spring which can automatically drive the rotating rod 71 to rotate and expand.

The high-barrier multilayer co-extrusion film processing equipment 100 further comprises: a winding mechanism 80 for receiving the processed film. The winding mechanism 80 is arranged at the upper end of the portal frame 20. The winding mechanism 80 includes: support 81, horizontal pole 82, take-up roller 83, adhesion layer 84. The bracket 81 is fixedly arranged on one side of the upper end of the portal frame 20. The cross bar 82 is movably arranged at the upper end of the bracket 81 through a rotating shaft. The winding rollers 83 are movably arranged on two sides of the cross bar 82 through rotating shafts. The adhesive layer 84 is provided on the outer side surface of the take-up roller 83.

The outer side surface of the stabilizing wheel 44 is provided with an arc-shaped groove for engaging the bubble surface.

The first magnetic ring 68 and the second magnetic ring 69 have the same adjacent magnetic poles. The same poles repel away from each other, which can be driven when the first magnetic ring 68 and the second magnetic ring 69 approach each other.

The extrusion ring 67 is sleeved outside the rotating rod 71, and the extrusion ring 67 and the outer side surface of the rotating rod 71 are mutually attached. The rotating lever 71 can be pressed by the pressing ring 67 while being tightened to adjust the rotation angle of the rotating lever 71.

The rotating shaft on which the cross rod 82 is arranged is provided with a locking bolt. The cross bar 82 is held against rotation by the locking latch when it is not required to rotate.

The processing equipment 100 for the high-barrier multilayer co-extruded film further comprises: and the trigger mechanism 90 is used for feeding back the pressure of the bubble to help regulate the air output of the pump body 36. The trigger mechanism 90 is disposed inside the fixed frame 41.

The trigger mechanism 90 includes: a fixed tube 91, a moving rod 92, a contact wheel 93, a first pressure sensor 94, a second pressure sensor 95, and a spring 96; the fixing pipe 91 is fixedly provided inside the fixing frame 41 on the lower end side. The movable rod 92 is movably inserted into one side of the fixed rod. The contact wheel 93 is movably disposed on an end of the moving rod 92 away from the fixed pipe 91 through a rotation shaft. The first pressure sensor 94 is fixedly provided on the inner side of the fixed pipe 91. The second pressure sensor 95 is fixedly disposed inside the fixed pipe 91 on a side away from the first pressure sensor 94. A spring 96 is provided inside the fixed tube 91 between the moving rod 92 and the first pressure sensor 94.

The first pressure sensor 94 and the second pressure sensor 95 are electrically connected to the pump body 36. The first pressure sensor 94 and the second pressure sensor 95 are used for feeding back the pressure on the bubble to help regulate the air output of the pump body 36.

The first squeezing wheel 52 and the second squeezing wheel 53 are sequentially close to each other in axial distance. The first extrusion wheel 52 and the second extrusion wheel 53 with the axle center distances being sequentially close can gradually extrude and bond the multilayer films together to form a complete multilayer film.

A preparation method of a high-barrier multilayer co-extruded film comprises the following steps:

step one, the extrusion film blowing mechanism 30 completes the film extrusion and blowing operation. Before extrusion, plastic particles are added into the screw injection molding machine 31 to be melted and injected into the runner 33 under pressure. At this time, the molten material flowing out of the flow passage 33 is cooled by the water flow inside the cooling ring 35 to form a bubble. The bubble is then drawn manually through guide wheel 51, first squeeze wheel 52 and second squeeze wheel 53. The trailing bubble is then automatically guided by the rotating first 52 and second 53 squeeze wheels to travel from bottom to top. Then the air outlet ring 34 is circularly blown by the pump body 36 to blow the film bubble open; thus, the extrusion and blowing production operation of the film can be carried out.

And step two, the extrusion forming mechanism 50 extrudes and compounds the film formed by the film blowing operation completed by the extrusion film blowing mechanism 30.

And step three, the rolling mechanism 80 rolls the extruded and compounded film. The collection rate and discharge rate should be controlled to 0.05M per second. Too high a collection rate can result in too much wind-up resistance. Easily causing film breakage. The surface adhesion of the film is reduced, and the toughness and the overall structural strength of the material are reduced. And too low rolling speed can lead to the too little rolling tension will lead to the change of the membrane roll face roughness in transportation, storage process easily the fold leads to unable machine use. At the same time, it should be noted that the diameter of the winding roller 83 increases as more and more film is wound. The angular velocity of the take-up roller 83 rotation should be reduced at this time according to the diameter of the take-up roller 83. So as to maintain a uniform linear velocity as the take-up roller 83 rotates. Thereby it takes place to prevent when the rolling tension is inhomogeneous to lead to unreeling inhomogeneous condition when later stage is gone on the computer and is used. The nylon layer is added to increase the overall strength of the multilayer film during production in order to increase the overall strength of the film. While the nylon layer has good transparency and puncture resistance, its barrier properties are poor. Silicon oxide can be plated on the nylon layer surface of the film when the film is produced so as to improve the air tightness and the barrier performance of the whole film.

When the device is used, the bubble blown by the air outlet ring 34 finally contacts the stabilizing wheel 44, the stabilizing wheel 44 plays a role in guiding and limiting, when the thickness of the bubble needs to be changed, the diameter of the bubble is preferably changed, when the diameter of the bubble needs to be enlarged, the electric push rod 61 drives the moving ring 62 to move downwards, so that the first extrusion block 64 does not extrude the second extrusion block 65 any more, at the moment, the connecting rod 43 can be automatically separated and opened under the action of the first elastic expansion rod 42, so that the stabilizing wheel 44 can be separated and opened mutually, so that the bubble has a larger space to expand, when the moving ring 62 moves downwards, the first magnetic ring 68 and the second magnetic ring 69 can be close to each other, at the moment, the second magnetic ring 69 can drive the extrusion ring 67 to move downwards under the action of the same polarity repulsion, so that the extrusion ring 67 can not extrude the rotating rod 71 any more, at the rotating rod 71 can rotate and open mutually under the action of the torsion spring, thereby enlarging the air outlet angle, so that the air flow can fully expand the bubble at a wider angle, otherwise, when the diameter of the bubble needs to be reduced, the electric push rod 61 pushes the movable ring 62 to move upwards, the first extrusion block 64 and the second extrusion block 65 extrude each other to tighten the connecting rod 43, meanwhile, the first magnetic ring 68 and the second magnetic ring 69 are far away, the second elastic expansion rod 66 pushes the extrusion ring 67 to move upwards, so that the rotating rod 71 is tightened, the angle of the air flow is reduced to prevent the bubble from being blown open, meanwhile, the whole transmission of the device is realized by the first magnetic ring 68 and the second magnetic ring 69 through magnetic force without contact, the device is suitable for the area blocked by the bubble, meanwhile, the complex control mechanism is not needed, the adjustment is directly realized through linkage, the use is convenient, and the trigger mechanism 90 can monitor the pressure on the feedback bubble in real time to help to adjust the air outlet amount of the pump body 36, when the film blowing operation is carried out, the surface of the film bubble is contacted with the contact wheel 93, if the air output is larger, the expansion force of the film bubble is larger, the right moving range of the moving rod 92 is larger, otherwise, if the film bubble is under insufficient force, the contact wheel 93 is not extruded; can make the carriage release lever 92 remove to the left, can obtain the degree that this moment carriage release lever 92 removed and the atress degree of membrane bubble through first pressure sensor 94 and second pressure sensor 95 this moment, thereby make things convenient for the pump body 36 to carry out the control of air output, film that the device produced can be currently accomodate by left rolling cylinder 83 afterwards, and accomodating and accomplishing the whole shutdown that can not be of back installation, only need clockwise rotation horizontal pole 82, make the adhesion layer 84 on rolling cylinder 83 surface on right side together with the film adhesion, only need to control the film between two rolling cylinders 83 and cut off this moment, can accomplish the change of rolling cylinder 83, and whole change process need not to shut down, simple structure changes conveniently.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.