An antibacterial masterbatch uniformly blended co-extruded film production apparatus

Abstract

The application relates to the technical field of co-extrusion film processing, and discloses a co-extrusion film production device for uniform blending of antibacterial master batches, which comprises a film blowing machine and co-extrusion supports arranged on four sides of the film blowing machine, the co-extrusion supports are fixedly provided with control consoles, further comprises: a heat preservation outer cylinder fixed on the co-extrusion supports; a co-extrusion cylinder fixed in the heat preservation outer cylinder; a driving element fixed on the co-extrusion supports; and a blending cylinder fixed on the co-extrusion supports and abutting against the end of the heat preservation outer cylinder and the end of the co-extrusion cylinder. The application realizes efficient purification of crystal points and uniform blending of raw materials, and relies on the cooperative operation of various components; the blending leaf filter is made of porous filter plate material and is obliquely installed, the porous structure disperses the flow resistance of liquid raw materials to reduce the flow disturbance, the crystal points stably contact the surface of the filter plate, and the oblique surface guides the crystal points to slide into the groove plate under the action of liquid thrust and rotational inertia; the centrifugal force generated by the rotation of the blending leaf filter pushes the crystal points to directionally flow into the blending slip ring along the closed channel of the groove plate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of co-extrusion film processing, in particular to a co-extrusion film production equipment for uniform blending of antibacterial masterbatch. BACKGROUND

[0002] With the increasingly stringent standards of functionality and safety and hygiene of film materials in the fields of food packaging, medical protection, etc., co-extrusion films added with antibacterial masterbatch are widely used due to their excellent barrier property, long-acting antibacterial performance and mechanical stability. The uniform blending degree of antibacterial masterbatch and base resin in the production process, as well as the control effect of the uncompletely melted masterbatch (i.e. crystal points), directly determine the use performance and market competitiveness of the final film material. In the mainstream production process of co-extrusion film, the antibacterial masterbatch and the base resin need to be fully heated and melted by a heating plasticizing mechanism to form a uniform liquid raw material. If there are uncompletely melted small masterbatch particles in this link, these crystal points will enter the blow molding system with the liquid raw material, resulting in appearance defects such as "fish eyes" and "pinholes" on the surface of the molded film. These defects not only seriously affect the light transmittance and flatness of the film material, but also weaken the key mechanical properties of the film material such as tensile strength and puncture resistance, and even may damage the barrier of the film material. Therefore, the efficient interception and removal of crystal points have become one of the core technical points in the research and design of co-extrusion film production equipment.

[0003] At present, the co-extrusion film production equipment on the market generally uses a metal filter screen as the core component for intercepting crystal points, and uses the micron-level porous structure of the filter screen to physically block and filter the solid crystal points in the liquid raw material. However, this kind of traditional filtering scheme has significant technical limitations. The filter screen needs to be replaced regularly according to the production load and filtering accuracy. When the crystal points and impurities attached to the filter screen reach a certain amount, the flow resistance of the liquid raw material will increase sharply, causing the pressure of the equipment to rise abnormally. At this time, the whole production line must be forced to stop, and the old filter screen must be manually removed and replaced with a new one. This operation not only directly interrupts the continuous process required by industrial production, causing a significant decrease in the output efficiency of the film material per unit time, but also causes the liquid raw material remaining in the flow channel and plasticizing cavity of the equipment to solidify and deteriorate due to cooling during the stoppage, forming waste material that cannot be reused. At the same time, the leakage of raw material during the replacement of the filter screen, the loss of raw material in the gap between the old and new filter screens, and the added cost of manual operation further exacerbate the problems of waste of masterbatch and high production cost, which cannot meet the development needs of high efficiency, energy saving and low loss in modern industrial production. SUMMARY

[0004] The present application provides a co-extrusion film production equipment for uniform blending of antibacterial masterbatch, which effectively stirs the liquid raw material and improves the blending uniformity.

[0005] To solve the above technical problems, the technical solution of the present application is as follows:

[0006] In a first aspect, an anti-bacterial master batch uniform blending co-extrusion film production equipment comprises a film blowing machine and co-extrusion supports arranged on four sides of the film blowing machine, wherein the co-extrusion supports are fixedly provided with control consoles, and further comprising:

[0007] An insulation outer cylinder is fixed on the co-extrusion support, a co-extrusion cylinder is fixed in the insulation outer cylinder, a driving member is fixed on the co-extrusion support, a blending cylinder is fixed on the co-extrusion support and is in abutment with an end of the co-extrusion cylinder, a blending member is rotatably arranged in the co-extrusion cylinder, a feeding member is fixed on the co-extrusion cylinder, and a heating member is fixed on the co-extrusion cylinder.

[0008] A mounting plate is fixed on both ends of the blending cylinder, a transmission shaft is rotatably arranged on the mounting plate at both ends, four blending boxes are arranged equidistantly on the transmission shaft, an adjusting auxiliary shaft is rotatably arranged in the transmission shaft and the blending box, a main bevel gear is fixed on the adjusting auxiliary shaft and located in the blending box, a plurality of first torsion shafts are arranged equiangularly on the blending box, an auxiliary bevel gear is fixed on one end of the first torsion shaft located in the blending box and engaged with the main bevel gear, a blending leaf filter is fixed on one end of the first torsion shaft located outside the blending box, a groove plate is fixed on the blending leaf filter, a blending sliding ring is slidably arranged in the blending cylinder, a blending hole is arranged on the inner surface of the blending sliding ring and sleeved on one end of the blending leaf filter away from the blending box, a second torsion shaft is fixed on one end of the blending leaf filter located in the blending hole and rotatably arranged in the blending sliding ring, a filter outer ring is fixed in the blending cylinder, a filter ring is bolted on the filter outer ring, a filter inner ring is bolted on the filter ring, and six electric heating filter sheets are arranged between the filter outer ring and the filter inner ring and annularly arranged.

[0009] Further, the driving member comprises:

[0010] An outer cover is fixed on the co-extrusion support, a feeding screw is rotatably arranged in the co-extrusion cylinder at one end and located outside the co-extrusion cylinder at the other end, a driving rod is fixed on one end of the feeding screw away from the outer cover and on the other end of the transmission shaft.

[0011] Further, the driving member further comprises:

[0012] A driving motor is fixed on the co-extrusion support, a main belt pulley is fixed on the driving motor, an auxiliary belt pulley is fixed on one end of the feeding screw located outside the co-extrusion cylinder, and a belt strip is sleeved on one end of the auxiliary belt pulley and on the other end of the auxiliary belt pulley.

[0013] Further, the blending member further comprises:

[0014] Hexagonal prism is fixed on the end of the adjusting auxiliary shaft close to the driving rod; the inclined ring is fixed in the blending cylinder; the first sliding groove is arranged on the inclined ring; the second sliding groove is arranged in the blending cylinder; the first sliding block is fixed on the blending sliding ring and is slidingly arranged in the first sliding groove; the second sliding block is fixed on the blending sliding ring and is slidingly arranged in the second sliding groove; the third sliding groove is arranged on the filter outer ring and the filter inner ring; the third sliding block is fixed on the blending sliding ring and is slidingly arranged in the third sliding groove; the limiting convex ring is fixed on the filter outer ring and the filter inner ring; the non-inductive end of the pressure sensor is fixed on the filter outer ring and the filter inner ring, and the inductive end is fixed on the electric heating filter piece.

[0015] Further, the blending device further comprises:

[0016] The adjusting main shaft is rotatably arranged in one end of the feeding screw and extends out of the other end of the feeding screw; the hexagonal prism is fixed on the end of the adjusting main shaft close to the adjusting auxiliary shaft; the adjusting motor is fixed on the auxiliary belt pulley; the bevel gear pair has an input end bevel gear fixed on the adjusting motor and an output end bevel gear fixed on the end of the adjusting main shaft extending out of the feeding screw.

[0017] Further, the blending device further comprises:

[0018] The locking gear is fixed on the end of the adjusting main shaft close to the bevel gear pair; the electric telescopic rod is fixed on the auxiliary belt pulley; the locking toothed plate is fixed on the electric telescopic rod and is engaged with the locking gear; the microcontroller is fixed on the auxiliary belt pulley; the storage battery is fixed on the auxiliary belt pulley.

[0019] Further, the feeding device comprises:

[0020] The first feeding shell is fixedly sleeved on the co-extrusion cylinder; the second feeding shell is fixedly sleeved on the co-extrusion cylinder and is opposite to the first feeding shell; the receiving square tube is fixedly arranged at the lower part of the second feeding shell; the feeding hopper is fixedly arranged at the lower part of the receiving square tube.

[0021] Further, the heating device comprises:

[0022] The heating shell is provided with three, and the three heating shells are sleeved on the co-extrusion cylinder; the temperature controller is fixed below the heating shell; the heating ring is fixed in the heating shell.

[0023] Further, the film blowing machine is fixed with film blowing material pipes on four sides.

[0024] Further, it further comprises:

[0025] The first flange is fixed on the end of the heat preservation outer cylinder close to the blending cylinder; the second flange is fixed on the film blowing material pipe; the third flange is fixed on both ends of the blending cylinder and is opposite to the first flange and the second flange.

[0026] The above scheme of the present application at least includes the following beneficial effects:

[0027] The present application realizes efficient purification of crystal points and uniform blending of raw materials, and relies on the synergistic operation of various components; when the feeding screw rotates, the driving rod at the end is driven to rotate, and then the transmission shaft in the blending cylinder and the blending box are driven to rotate, so that the first torsion shaft drives the blending leaf filter to make a circular motion with the transmission shaft as the center; the blending leaf filter is made of porous filter plate material and is installed obliquely, the porous structure disperses the flow resistance of liquid raw materials to reduce the disturbance, so that the crystal points stably contact the filter surface, and the inclined surface guides the crystal points to slide into the groove plate under the action of liquid thrust and rotational inertia; at the same time, the centrifugal force generated by the rotation of the blending leaf filter pushes the crystal points to flow into the blending slip ring along the closed channel of the groove plate, and the liquid raw materials enter the ring through the blending hole of the blending slip ring to realize preliminary separation; the inclined surface inside the blending slip ring guides the crystal points to the filtering area, and the six electric heating filter pieces between the outer filter ring and the inner filter ring intercept the crystal points; when a certain electric heating filter piece is attached with too many crystal points, the pressure sensor senses the pressure rise and transmits the signal to the control console, triggering the electric heating filter piece to heat and melt the crystal points, and the processed liquid raw materials are filtered again through the filter ring; the liquid raw materials are sequentially subjected to multi-stage purification by the four groups of blending leaf filters and electric heating filter pieces, fundamentally avoiding the fish-eye defect of the film blowing, and at the same time, the synchronous movement of the blending leaf filter and the groove plate stirs the liquid raw materials, improving the blending uniformity.

[0028] The present application has good working condition adaptability, which is realized by the adjustable design of the inclination angle of the blending leaf filter; when the rotation speed of the feeding screw changes, the control console starts the electric telescopic rod through the microcontroller, the retraction of the electric telescopic rod drives the locking gear plate to disengage from the locking gear, and the rotation restriction on the adjusting main shaft is released; then the adjusting motor is operated, the locking gear is driven to rotate through the bevel gear, the adjusting main shaft is matched with the hexagonal prism and the hexagonal groove of the adjusting auxiliary shaft, and the adjusting auxiliary shaft and the main bevel gear are driven to rotate; the main bevel gear is engaged with the auxiliary bevel gear at the end of the first torsion shaft, and the first torsion shaft drives the blending leaf filter to adjust the inclination angle; after the angle is determined, the electric telescopic rod is extended and reset, the locking gear plate is re-engaged with the locking gear to fix the adjusting main shaft, and the working angle of the blending leaf filter is stable, so that the equipment can flexibly adapt to the working condition requirements of different raw material characteristics and production speeds. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A whole structure schematic view of a co-extrusion film production equipment for uniform blending of antibacterial master batch is provided for the embodiment of the present application;

[0030] Figure 2 A film blowing machine structure schematic view of a co-extrusion film production equipment for uniform blending of antibacterial master batch is provided for the embodiment of the present application;

[0031] Figure 3The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure;

[0032] Figure 4 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure; Figure 3 The enlarged view of A in the figure;

[0033] Figure 5 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure; Figure 4 The enlarged view of B in the figure;

[0034] Figure 6 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure; Figure 3 The enlarged view of C in the figure;

[0035] Figure 7 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure;

[0036] Figure 8 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure; Figure 7 The enlarged view of D in the figure;

[0037] Figure 9 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure;

[0038] Figure 10 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure; Figure 9 The enlarged view of E in the figure;

[0039] Figure 11 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure;

[0040] Figure 12 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure; Figure 11 The enlarged view of F in the figure;

[0041] Figure 13 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure; Figure 11 The enlarged view of G in the figure;

[0042] Figure 14 The heat preservation outer cylinder structure schematic diagram of the antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application is shown in the figure;

[0043] Figure 15A blending sliding ring structure schematic diagram of an antibacterial master batch uniform blending co-extrusion film production equipment provided by the embodiment of the application.

[0044] Explanation of reference signs:

[0045] In the figure: 1, a film blowing machine; 101, a film blowing tube; 2, a co-extrusion support; 3, a control console; 4, a heat preservation outer cylinder; 5, a co-extrusion cylinder; 6, a driving member; 601, an outer cover; 602, a feeding screw; 603, a driving rod; 604, a driving motor; 605, a main pulley; 606, an auxiliary pulley; 607, a belt strip; 7, a blending cylinder; 8, a blending member; 801, a mounting plate; 802, a transmission shaft; 803, a blending box; 804, an auxiliary shaft adjusting device; 805, a main bevel gear; 806, a first torsion shaft; 807, an auxiliary bevel gear; 808, a blending leaf filter; 809, a groove plate; 8010, a blending sliding ring; 8011, a blending hole; 8012, a second torsion shaft; 8013, a filter outer ring; 8014, a filter ring; 8015, a filter inner ring; 8016, an electric heating filter; 8017, a hexagonal rib groove; 8018, an inclined ring; 8019, a first sliding groove; 8020, a second sliding groove; 8021, a first sliding block; 8022, a second sliding block; 8023, a third sliding groove; 8024, a third sliding block; 8025, a limiting convex ring; 8026, a pressure sensor; 8027, an adjusting main shaft; 8028, a hexagonal prism; 8029, an adjusting motor; 8030, a bevel gear pair; 8031, a locking gear; 8032, an electric telescopic rod; 8033, a locking tooth plate; 8034, a microcontroller; 8035, a storage battery; 9, a feeding member; 901, a first feeding shell; 902, a second feeding shell; 903, a receiving square tube; 904, a feeding hopper; 10, a heating member; 1001, a heating shell; 1002, a temperature controller; 1003, a heating ring; 11, a first flange; 12, a second flange; 13, a third flange. DETAILED DESCRIPTION

[0046] Exemplary embodiments of the present application will be described herein below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it is understood that the present application can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the application to those skilled in the art.

[0047] As Figures 1 to 15As shown, the embodiment of the application provides an antibacterial master batch uniform blending co-extrusion film production equipment, which comprises a film blowing machine 1 and a co-extrusion support 2 arranged on four sides of the film blowing machine 1, the co-extrusion support 2 is fixedly provided with a control console 3, further comprising: a heat preservation outer cylinder 4 fixed on the co-extrusion support 2; a co-extrusion cylinder 5 fixed in the heat preservation outer cylinder 4; a driving member 6 fixed on the co-extrusion support 2; a blending cylinder 7 fixed on the co-extrusion support 2 and close to one end of the heat preservation outer cylinder 4 and the end of the co-extrusion cylinder 5; a blending member 8 rotatably arranged in the co-extrusion cylinder 5; a feeding member 9 fixed on the co-extrusion cylinder 5; and a heating member 10 fixed on the co-extrusion cylinder 5.

[0048] A mounting plate 801 is fixed on both ends of the blending cylinder 7; a transmission shaft 802 is rotatably arranged on both ends of the mounting plate 801; four blending boxes 803 are arranged, and the four blending boxes 803 are equidistantly fixed on the transmission shaft 802; an auxiliary adjusting shaft 804 is rotatably arranged in the transmission shaft 802 and the blending box 803; a main bevel gear 805 is fixed on the auxiliary adjusting shaft 804 and located in the blending box 803; a plurality of first torsion shafts 806 are equiangularly rotatably arranged on the blending box 803; an auxiliary bevel gear 807 is fixed on one end of the first torsion shaft 806 located in the blending box 803 and engaged with the main bevel gear 805; a blending leaf filter 808 is fixed on one end of the first torsion shaft 806 located outside the blending box 803; a groove plate 809 is fixed on the blending leaf filter 808; a blending sliding ring 8010 is slidingly arranged in the blending cylinder 7; a blending hole 8011 is formed on the inner surface of the blending sliding ring 8010 and sleeved on one end of the blending leaf filter 808 away from the blending box 803; a second torsion shaft 8012 is fixed on one end of the blending leaf filter 808 located in the blending hole 8011 and rotatably arranged in the blending sliding ring 8010; a filter outer ring 8013 is fixed in the blending cylinder 7; a filter ring 8014 is bolted on the filter outer ring 8013; a filter inner ring 8015 is bolted on the filter ring 8014; and six electric heating filter sheets 8016 are arranged between the filter outer ring 8013 and the filter inner ring 8015 and arranged in a ring shape.

[0049] The film blowing machine 1 is fixed with a film blowing material pipe 101 on four sides; further comprising: a first flange 11 fixed on one end of the heat preservation outer cylinder 4 close to the blending cylinder 7; a second flange 12 fixed on the film blowing material pipe 101; and a third flange 13 fixed on both ends of the blending cylinder 7 and opposite to the first flange 11 and the second flange 12.

[0050] Specifically, the number of blending leaf filter 808 is set to adapt to the number of the first torsion shaft 806, the third flange 13 at both ends of the blending cylinder 7 is respectively connected with the first flange 11 and the second flange 12, the conversion from the master batch raw material to the liquid raw material, and the effective delivery of the liquid raw material into the blow film pipe 101, and then into the blow film machine 1.

[0051] In another preferred embodiment of the present application, the driving member 6 comprises: an outer cover 601 fixed on the co-extrusion support 2; a feeding screw 602 rotatably arranged in the co-extrusion cylinder 5 at one end and located outside the co-extrusion cylinder 5 at the other end; a driving rod 603 fixed at one end of the feeding screw 602 away from the outer cover 601 and fixed at the other end on the transmission shaft 802.

[0052] The driving member 6 further comprises: a driving motor 604 fixed on the co-extrusion support 2; a main pulley 605 fixed on the driving motor 604; an auxiliary pulley 606 fixed on the end of the feeding screw 602 located outside the co-extrusion cylinder 5; and a belt strip 607 sleeved at one end on the auxiliary pulley 606 and at the other end on the auxiliary pulley 606.

[0053] Specifically, the rotation of the feeding screw 602 drives the delivery speed of the master batch raw material, thereby adjusting the processing speed of the production process.

[0054] In another preferred embodiment of the present application, the blending member 8 further comprises: a hexagonal rib groove 8017 formed on the adjusting auxiliary shaft 804 close to one end of the driving rod 603; an inclined ring 8018 fixed in the blending cylinder 7; a first sliding groove 8019 formed on the inclined ring 8018; a second sliding groove 8020 formed in the blending cylinder 7; a first sliding block 8021 fixed on the blending sliding ring 8010 and slidingly arranged in the first sliding groove 8019; a second sliding block 8022 fixed on the blending sliding ring 8010 and slidingly arranged in the second sliding groove 8020; a third sliding groove 8023 formed on the filter outer ring 8013 and the filter inner ring 8015; a third sliding block 8024 fixed on the blending sliding ring 8010 and slidingly arranged in the third sliding groove 8023; a limiting convex ring 8025 fixed on the filter outer ring 8013 and the filter inner ring 8015; and a pressure sensor 8026 with a non-inductive end fixed on the filter outer ring 8013 and the filter inner ring 8015 and an inductive end fixed on the electric heating filter sheet 8016.

[0055] The blending device 8 further comprises: an adjusting main shaft 8027, one end of which is rotatably arranged in the feeding screw 602 and the other end of which extends out of the feeding screw 602; a hexagonal prism 8028, which is fixed to the adjusting main shaft 8027 close to one end of the adjusting auxiliary shaft 804; an adjusting motor 8029, which is fixed to the auxiliary belt pulley 606; a bevel gear pair 8030, the input end of which is fixed to the adjusting motor 8029 and the output end of which is fixed to one end of the adjusting main shaft 8027 extending out of the feeding screw 602.

[0056] The blending device 8 further comprises: a locking gear 8031, which is fixed to one end of the adjusting main shaft 8027 close to the bevel gear pair 8030; an electric telescopic rod 8032, which is fixed to the auxiliary belt pulley 606; a locking gear plate 8033, which is fixed to the electric telescopic rod 8032 and is engaged with the locking gear 8031; a microcontroller 8034, which is fixed to the auxiliary belt pulley 606; and a storage battery 8035, which is fixed to the auxiliary belt pulley 606.

[0057] Specifically, the limiting convex ring 8025 limits the position movement of the electric heating filter sheet 8016, six pressure sensors 8026 are arranged at the same electric heating filter sheet 8016, two pressure sensors 8026 form a group, and three groups of pressure sensors 8026 are respectively located at the middle and both ends of the electric heating filter sheet 8016; the microcontroller 8034 receives the signal of the control console 3 and combines the adjusting motor 8029, the electric telescopic rod 8032, the microcontroller 8034 and the storage battery 8035 together to avoid affecting the rotation of the feeding screw 602; and the storage battery 8035 needs to be charged regularly.

[0058] In another preferred embodiment of the present application, the feeding device 9 comprises: a first feeding shell 901, which is fixedly sleeved on the co-extrusion cylinder 5; a second feeding shell 902, which is fixedly sleeved on the co-extrusion cylinder 5 and is opposite to the first feeding shell 901; a receiving square tube 903, which is fixedly arranged at the lower portion of the second feeding shell 902; and a feeding hopper 904, which is fixedly arranged at the lower portion of the receiving square tube 903.

[0059] The heating device 10 comprises: three heating shells 1001, which are sleeved on the co-extrusion cylinder 5; a temperature controller 1002, which is fixedly arranged at the lower portion of the heating shell 1001; and a heating ring 1003, which is fixedly arranged in the heating shell 1001.

[0060] Specifically, the feeding hopper 904 contains the master batch, which is carried away by the rotation of the feeding screw 602; the heating ring 1003 is provided with three heating rings, which heat the co-extrusion cylinder 5, and the temperature controller 1002 controls the heating temperature of the heating ring 1003.

[0061] The working principle is that the console 3 is used as the core control center in the starting stage of the device, the console 3 directly outputs instructions to the film blowing machine 1, the driving motor 604, the electric heating filter sheet 8016, the pressure sensor 8026, the temperature controller 1002 and the heating ring 1003, so that the start and stop and parameter presetting of the core execution unit are realized; at the same time, the control signals are synchronously transmitted to the microcontroller 8034, the microcontroller 8034 accurately controls the action rhythm of the adjusting motor 8029 and the electric telescopic rod 8032, the storage battery 8035 provides independent and stable direct current power for the adjusting motor 8029 and the electric telescopic rod 8032, and the interference of main circuit fluctuation on the adjusting accuracy is avoided; after preparation, the antibacterial master batch and the basic raw material are sent into the feeding hopper 904 according to the proportion through the automatic feeding device, three independent heating pieces 10 have completed preheating according to the process requirement, they are arranged along the axial segmentation of the co-extrusion cylinder 5, correspond to the temperature intervals of the preheating section, the plasticizing section and the homogenizing section respectively, finally the film blowing machine 1 and the auxiliary systems such as the air pump and the traction are started, and the device enters the standby running state.

[0062] The core process of the master batch treatment is powered by the driving motor 604, the driving motor 604 rotates to drive the main pulley 605 to rotate, the main pulley 605 transmits the torque to the auxiliary pulley 606 through the tensioned belt strip 607, and then drives the feeding screw 602 to make uniform rotary motion in the co-extrusion cylinder 5; the spiral blade on the surface of the feeding screw 602 plays a conveying role, when the master batch in the feeding hopper 904 falls into the screw groove through the receiving square tube 903, it is carried by the spiral blade to the preheating section, in this process, the heating ring 1003 of the preheating section releases heat under the accurate control of the temperature controller 1002, the temperature of the master batch gradually rises through the heat conduction of the inner wall of the co-extrusion cylinder 5, and the master batch is preliminarily preheated.

[0063] With the continuous pushing of the feeding screw 602, the preheated master batch enters the plasticizing section with higher temperature, the output power of the heating ring 1003 is increased here, the temperature of the inner wall of the co-extrusion cylinder 5 reaches the melting point of the master batch, and the master batch is completely melted into liquid raw material under the action of high temperature; then the liquid raw material is pushed to the homogenizing section, the temperature of the homogenizing section is 10-20℃ lower than that of the plasticizing section, which prevents the liquid from excessive degradation, and the small crystal points in the liquid which are not completely melted are subjected to secondary melting, thereby reducing the burden of the subsequent blending and filtering link; during the whole plasticizing process, the heat preservation outer cylinder 4 outside the co-extrusion cylinder 5 forms a closed heat preservation space, which effectively reduces heat loss and ensures that the temperature fluctuation of each section is controlled within ±5℃, thereby providing protection for the plasticizing quality of the master batch.

[0064] When the feeding screw 602 rotates, the end of the driving rod 603 is synchronously rotated, the driving rod 603 transmits power to the transmission shaft 802 in the blending cylinder 7, and the transmission shaft 802 stably rotates under the support of the two end plates 801; the four blending boxes 803 fixed on the transmission shaft 802 rotate synchronously with the shaft, and then drive the first torsion shaft 806 and the blending leaf filter 808 to make a circular motion with the transmission shaft 802 as the center, so that the blending speed and the feeding speed are always matched, and the raw material is prevented from being retained due to the speed difference.

[0065] The blending leaf filter 808 is made of porous filter plate material and is installed at an inclined angle, forming the functions of interception, flow guide and stirring. The porous structure of the blending leaf filter 808 can disperse the flow resistance of the liquid raw material, greatly reducing the turbulence phenomenon easily generated by the solid blade, so that the crystal points in the liquid raw material can stably contact the surface of the filter. The inclined surface of the blending leaf filter 808 is like a guide channel. Under the action of the liquid thrust and the rotational inertia of the filter, the crystal points slide along the inclined surface of the blending leaf filter 808 into the groove plate 809. At the same time, the centrifugal force generated by the rotation of the blending leaf filter 808 pushes the crystal points to the outside of the filter, promoting the directional flow of the crystal points along the closed channel of the groove plate 809, and finally converging into the blending sliding ring 8010. The liquid raw material enters the ring through the blending holes 8011 on the inner surface of the blending sliding ring 8010, realizing the preliminary separation of the crystal points and the liquid raw material. The blending sliding ring 8010 slides along the first sliding groove 8019, the second sliding groove 8020 and the third sliding groove 8023 through the first sliding block 8021, the second sliding block 8022 and the third sliding block 8024, ensuring the stability of the track during rotation and avoiding the influence of shaking on the separation effect.

[0066] The crystal points further complete the closed loop of interception, monitoring and melting through the electric heating filter 8016. The inclined surface design of the blending sliding ring 8010 guides the crystal points to flow to the filtering area. When the crystal points reach the filter outer ring 8013 and the filter inner ring 8015, they are completely intercepted by the six annularly distributed electric heating filters 8016. Each electric heating filter 8016 is equipped with a pressure sensor 8026. When the crystal points attached to the electric heating filter 8016 increase, causing the flow area to decrease, the liquid pressure borne by the electric heating filter 8016 increases, and the electric signal sensed by the pressure sensor 8026 is transmitted to the control console 3 in real time. When the electric signal reaches the preset critical point, the electric heating filter 8016 is automatically powered and heated. The temperature of the electric heating filter 8016 rapidly rises above the homogenization temperature, completely melts the attached crystal points, and stops heating until the electric heating filter 8016 resumes smooth flow. The liquid raw material melted by the electric heating filter 8016 is further filtered by the filter ring 8014 for secondary filtration, ensuring that there is no crystal point residue in the raw material finally entering the film blowing machine 1.

[0067] The liquid raw material will be intercepted by the four groups of blending leaf filters 808 and treated by the four groups of electric heating filters 8016 in the device in turn. This multi-stage purification design fundamentally avoids the fish-eye defects caused by crystal points in the film blowing. At the same time, the rotation of the blending leaf filters 808 and the synchronous movement of the groove plates 809 will form uniform stirring of the liquid raw material, further improving the uniformity of the blending of the liquid raw material and strengthening the dispersion effect of the antibacterial master batch in the film material.

[0068] For different raw material characteristics and production speeds, the device can realize self-adaptability by adjusting the inclination angle of the blending leaf filters 808. When the feed screw 602 changes in speed, the control console 3 starts the electric telescopic rod 8032 through the microcontroller 8034. The retraction of the telescopic rod of the electric telescopic rod 8032 drives the locking gear plate 8033 to disengage from the locking gear 8031, thereby removing the rotation restriction on the adjusting main shaft 8027. Then the adjusting motor 8029 operates, and the power is transmitted to the adjusting main shaft 8027 through the bevel gear pair 8030. The adjusting main shaft 8027 precisely matches the hexagonal prism 8028 and the hexagonal prism groove 8017 of the adjusting auxiliary shaft 804, thereby driving the adjusting auxiliary shaft 804 to rotate. The main bevel gear 805 on the adjusting auxiliary shaft 804 engages with the auxiliary bevel gear 807 at the end of the first torsion shaft 806, thereby driving the first torsion shaft 806 to rotate, and finally adjusting the inclination angle of the blending leaf filters 808. After the angle adjustment is completed, the electric telescopic rod 8032 is extended and reset, the locking gear plate 8033 reengages with the locking gear 8031, and the position of the adjusting main shaft 8027 is fixed, thereby ensuring that the blending leaf filters 808 maintain a stable angle during work and realizing the flexible adaptation of the device to different production conditions.

[0069] The above describes the preferred embodiments of the present application. It should be noted that for ordinary skilled persons in the technical field, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered within the protection scope of the present application.

Claims

1. An apparatus for producing an antimicrobial homogeneously blended co-extruded film, comprising: Blown film machine and the co-extrusion support provided on four sides of blown film machine, the co-extrusion support is fixedly provided with control cabinet, it is characterized by further comprising: The heat preservation outer cylinder is fixed on the co-extrusion support, the co-extrusion cylinder is fixed in the heat preservation outer cylinder, the driving part is fixed on the co-extrusion support, the blending cylinder is fixed on the co-extrusion support, and the end close to the co-extrusion cylinder is connected with the end of the co-extrusion cylinder, the blending part is rotatably arranged in the co-extrusion cylinder, the feeding part is fixed on the co-extrusion cylinder, and the heating part is fixed on the co-extrusion cylinder; The mounting plate is fixed on both ends of the blending cylinder, the transmission shaft is rotatably arranged on the mounting plate, the blending box is arranged with four, and the four blending boxes are equidistantly fixed on the transmission shaft, the adjusting auxiliary shaft is rotatably arranged in the transmission shaft and the blending box, the main bevel gear is fixed on the adjusting auxiliary shaft and located in the blending box, the first torsion shaft is arranged with multiple, and the multiple first torsion shafts are equiangularly rotatably arranged on the blending box, the auxiliary bevel gear is fixed on one end of the first torsion shaft located in the blending box and engaged with the main bevel gear, the blending leaf filter is fixed on one end of the first torsion shaft located outside the blending box, the groove plate is fixed on the blending leaf filter, the blending sliding ring is slidably arranged in the blending cylinder, the blending hole is formed on the inner surface of the blending sliding ring and sleeved on one end of the blending leaf filter away from the blending box, one end of the second torsion shaft is fixed on one end of the blending leaf filter located in the blending hole, and the other end is rotatably arranged in the blending sliding ring, the filter outer ring is fixed in the blending cylinder, the filter ring is bolted on the filter outer ring, the filter inner ring is bolted on the filter ring, and the electric heating filter sheet is arranged with six, and the six electric heating filter sheets are located between the filter outer ring and the filter inner ring and arranged in a ring shape.

2. An apparatus for producing an antibacterial homogeneously blended co-extruded film according to claim 1, characterized in that, The driving part comprises: The outer cover is fixed on the co-extrusion support, one end of the feeding screw is rotatably arranged in the co-extrusion cylinder, and the other end is located on the outside of the co-extrusion cylinder, one end of the driving rod is fixed on one end of the feeding screw away from the outer cover, and the other end is fixed on the transmission shaft.

3. An apparatus for producing a co-extruded film of uniformly blended antimicrobial masterbatches as claimed in claim 2, wherein, The driving part further comprises: The driving motor is fixed on the co-extrusion support, the main belt pulley is fixed on the driving motor, the auxiliary belt pulley is fixed on one end of the feeding screw located on the outside of the co-extrusion cylinder, one end of the belt strip is sleeved on the auxiliary belt pulley, and the other end is sleeved on the auxiliary belt pulley.

4. An apparatus for producing an antibacterial homogeneously blended co-extruded film according to claim 1, characterized in that, The blending part further comprises: The hexagonal rib groove is formed on one end of the adjusting auxiliary shaft close to the driving rod, the inclined ring is fixed in the blending cylinder, the first sliding groove is formed on the inclined ring, the second sliding groove is formed in the blending cylinder, the first sliding block is fixed on the blending sliding ring and slidably arranged in the first sliding groove, the second sliding block is fixed on the blending sliding ring and slidably arranged in the second sliding groove, the third sliding groove is formed on the filter outer ring and the filter inner ring, the third sliding block is fixed on the blending sliding ring and slidably arranged in the third sliding groove, the limiting convex ring is fixed on the filter outer ring and the filter inner ring, and the pressure sensor is fixed on the filter outer ring and the filter inner ring.

5. An apparatus for producing a co-extruded film of uniformly blended antimicrobial master granules as claimed in claim 4, wherein, The blending part further comprises: The adjusting main shaft is rotatably arranged at one end in the feeding screw and extends out of the feeding screw at the other end; the hexagonal prism is fixed at the end of the adjusting main shaft close to the adjusting auxiliary shaft; the adjusting motor is fixed on the auxiliary belt pulley; the bevel gear pair has the input end bevel gear fixed on the adjusting motor and the output end bevel gear fixed on the end of the adjusting main shaft extending out of the feeding screw.

6. An apparatus for producing a co-extruded film of uniformly blended antimicrobial master granules as claimed in claim 5, wherein, The blending device further comprises: The locking gear is fixed at the end of the adjusting main shaft close to the bevel gear pair; the electric telescopic rod is fixed on the auxiliary belt pulley; the locking gear plate is fixed on the electric telescopic rod and engaged with the locking gear; the microcontroller is fixed on the auxiliary belt pulley; and the storage battery is fixed on the auxiliary belt pulley.

7. An apparatus for producing a co-extruded film of uniformly blended antimicrobial master granules as claimed in claim 1, wherein, The feeding device comprises: The first feeding shell is fixedly sleeved on the co-extrusion cylinder; the second feeding shell is fixedly sleeved on the co-extrusion cylinder and opposite to the first feeding shell; the receiving square tube is fixedly arranged at the lower portion of the second feeding shell; and the feeding hopper is fixedly arranged at the lower portion of the receiving square tube.

8. An apparatus for producing an antibacterial homogeneously blended co-extruded film according to claim 1, characterized in that, The heating device comprises: The heating shell is provided with three, and the three heating shells are sleeved on the co-extrusion cylinder; the temperature controller is fixedly arranged at the lower portion of the heating shell; and the heating ring is fixedly arranged in the heating shell.

9. An apparatus for producing an antibacterial homogeneously blended co-extruded film according to claim 1, characterized in that, The film blowing machine is provided with the film blowing material pipes fixed on the four sides.

10. An apparatus for producing an antibacterial homogeneously blended co-extruded film according to claim 1, characterized in that, Further comprising: The first flange is fixed at the end of the heat preservation outer cylinder close to the blending cylinder; the second flange is fixed on the film blowing material pipe; The third flange is fixed at the two ends of the blending cylinder and opposite to the first flange and the second flange.

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