WO2014094193A1 - 同心套筒式五层共挤吹膜机头 - Google Patents

同心套筒式五层共挤吹膜机头 Download PDF

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Publication number
WO2014094193A1
WO2014094193A1 PCT/CN2012/001729 CN2012001729W WO2014094193A1 WO 2014094193 A1 WO2014094193 A1 WO 2014094193A1 CN 2012001729 W CN2012001729 W CN 2012001729W WO 2014094193 A1 WO2014094193 A1 WO 2014094193A1
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WIPO (PCT)
Prior art keywords
vertical
channel
runner
horizontal
flow
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PCT/CN2012/001729
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English (en)
French (fr)
Inventor
马佳圳
法兰克·卢布卡
林楚漂
Original Assignee
广东金明精机股份有限公司
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Priority to DE212012000277.4U priority Critical patent/DE212012000277U1/de
Publication of WO2014094193A1 publication Critical patent/WO2014094193A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
    • B29C48/338—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location using a die with concentric parts, e.g. rings, cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
    • B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
    • B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
    • B29C48/3363—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a layered die, e.g. stacked discs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0017—Combinations of extrusion moulding with other shaping operations combined with blow-moulding or thermoforming
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/50—Details of extruders
    • B29C48/695—Flow dividers, e.g. breaker plates
    • B29C48/70—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows
    • B29C48/705—Flow dividers, e.g. breaker plates comprising means for dividing, distributing and recombining melt flows in the die zone, e.g. to create flow homogeneity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • B29C49/04116—Extrusion blow-moulding characterised by the die
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/22—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using multilayered preforms or parisons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

Definitions

  • the invention belongs to the technical field of plastic blown film equipment, and particularly relates to a concentric sleeve type five-layer co-extrusion blown film head for producing a five-layer co-extruded plastic film.
  • the first type is a superimposed multi-layer co-extrusion blown film head
  • the second type is a concentric sleeve type multi-layer co-extrusion blown film head.
  • the structure of these two types of heads varies greatly, and the flow of molten material during operation is also very different.
  • the circular die of each layer of the superimposed multi-layer co-extrusion blown film head has the same diameter and is arranged in a superimposed manner, all located beside a circular vertical flow channel.
  • the material of each layer rises along the circular vertical flow channel, so that the material extruded from the circular die of the lower layer automatically forms the inner layer of the plastic film bubble, and the material extruded from the annular die of the upper layer is automatically surrounded.
  • An outer layer of the bubble is formed on the periphery of the inner layer.
  • FIG. 1 is a schematic structural view of a conventional superimposed five-layer co-extrusion head, which is provided with a plurality of horizontal flow passages 62, and an annular vertical total flow passage 61 is provided in the center of the machine head, and each horizontal flow passage 62 is provided.
  • the end junctions are connected to the vertical total flow path 61.
  • the concentric sleeve type five-layer co-extrusion blown film head has five spiral flow channels from the outside to the inside, and the spiral flow channels of each layer are arranged into a concentric circular shape with inner and outer sleeves, and each spiral flow channel is provided with a plurality of spirals.
  • the plurality of spiral flow passages 47 are distributed upward (as indicated by the arrows in FIG. 3).
  • the molten material extruded in the spiral flow path of the inner layer is automatically formed into the plastic film bubble.
  • Layer 97 the molten material extruded in the spiral flow path of the outer layer automatically forms an outer layer 98 of plastic film, and so on, forming a multi-layer co-extruded bubble 9, as shown in FIG.
  • FIG. 2 is a schematic view showing the structure and working principle of a concentric sleeve type five-layer co-extrusion blown film head, which is provided with five sets of flow channel systems, each of which corresponds to one layer of material guiding the bubble.
  • the concentric sleeves are sleeved from the outside to the inside according to the diameter of the cylinder.
  • Each adjacent two concentric sleeves A spiral flow path is formed between the interfaces (the spiral flow path of each layer belongs to a corresponding one of the flow channel systems), and the five-layer spiral flow paths 57, 17, 27, 47, 37 are sized according to the diameter Outwardly and inwardly arranged, wherein the number of spiral flow paths of each flow channel system is 32, and the spiral flow channels of the same flow channel system are evenly distributed along the circumference, and the starting point of each adjacent two spiral flow channels of the same layer is The angles that are staggered in the circumferential direction are equal (staggered 11.25°). 0 The starting point of each spiral flow path is connected to a radial flow path 44.
  • the radial flow passages 44 of the same set of runner systems are uniformly distributed radially.
  • the azimuth angles of the radial runners 44 of the different sets of runner systems are not correspondingly staggered. That is, arranged at the same azimuth angle, the radial flow paths of each set of runner systems overlap at the horizontal projection position, and the radial flow paths of each set of runner systems (ie, guiding each layer of materials) are correspondingly arranged in a circular ring.
  • the entire head requires a total of five circular distribution discs, and five circular distribution discs are stacked one on top of the other, as shown in FIG.
  • the total flow passages 5 of each set of runner systems are arranged.
  • the total flow passages 5 of each set of runner systems are arranged in order from top to bottom, and the molten material enters the total flow passage 5 and is radially distributed to each of the radial flow passages 44, and then enters the corresponding The spiral flow path of the runner system 57, 17, 27, 47, 37.
  • an intake passage is also required, and the intake passage can only be set in the handpiece.
  • the above-mentioned structural form shown in Fig. 2 is mainly suitable for producing a plastic film product having a small width, and is not suitable for producing a plastic film product having a large width.
  • the larger the width of the plastic film product the larger the diameter of the extruded bubble; for example, the diameter of the bubble extruded during the production of a common plastic film product is only 1-2 meters, and the production of a wide agricultural plastic film The diameter of the bubble extruded during the product process reaches 3-4 meters.
  • BC denotes the diameter of the inner spiral flow path 37
  • AD denotes the diameter of the outer spiral flow path 57
  • d denotes the bubble diameter just extruded (in the present application, the bubble diameter means that the bubble diameter is not yet blown Diameter of expansion); when the structure shown in Figure 2
  • the BC distance and AD distance in Figure 2 need to be changed to 3-4 meters, and the diameter is 3-4 meters.
  • the distribution tray 6 has as many as five layers, and the 3 ⁇ 4 degree (shown by h in Fig. 2) of the five-layer distribution tray 6 is usually more than 1.5 meters, thereby causing the following problems:
  • the size of the nose is very large, and the amount of alloy steel consumed is large, which undoubtedly increases the production cost. (Special alloy steel is required to make the blown film head, which is very expensive);
  • the size of the machine head is large and heavy, which makes machining very difficult, and even causes ordinary processing machine tools to be difficult to handle the processing tasks;
  • the volume of the machine head is large, which results in a long preheating process for the production of plastic film, and a large energy consumption in the production process;
  • the large size of the nose means that the sealing interface area is large and the sealing is more difficult
  • the radial flow passages have small cross sections and their continuous extension length is large (each radial flow passage has a length of more than 3 m), while the small cross section flow path has a large pressure loss on the molten material, so the head is required for production.
  • the extrusion pressure is large, which will increase the difficulty of sealing, and the precision of the sealing interface is quite high;
  • the center of the nose is occupied by the material flow path 5 of each of the runner systems, so that the intake passage 10 passing through the lower portion of the head can only be disposed at the eccentric portion and sandwiched between the two radial passages 44 In the sector between the regions, as shown in Figure 5; and the large diameter bubble must require the diameter of the inlet passage to be large enough, so the eccentric distance of the inlet passage is required to be large enough (if the eccentric distance is too small, the two radials The width of the sector between the flow passages cannot accommodate the intake passage, which in turn determines that the diameter of the lower portion of the nose is difficult to reduce.
  • An object of the present invention is to provide a concentric sleeve type five-layer co-extrusion blown film head which overcomes the above disadvantages and which is capable of producing a wide and wide five-layer co-extruded plastic film which is small in size and easy to process.
  • a concentric sleeve type five-layer co-extrusion blown film head comprising five sets of runner systems, each channel system correspondingly guiding a layer of molten material flow; each set of runner system includes There is a spiral flow channel located at the upper part of the machine head, and a total feed port located at the lower part of the machine head;
  • the upper part of the machine head is provided with six concentric sleeves which are arranged inside and outside, and the concentric sleeves are sequentially assembled from the outside to the inside according to the diameter of the cylinder, and the common central axis of each concentric sleeve becomes the central axis of the head;
  • a spiral flow channel is formed between the interfaces of two adjacent concentric sleeves, and the five spiral flow channels are arranged in order from the outside to the inside according to the diameter, and each spiral flow channel has thirty-two spiral flow paths.
  • Each spiral flow path has a spiral flow path starting point, and the whole machine head has a total of one hundred and sixty spiral flow path starting points; the thirty-two spiral flow path starting points of the same spiral flow path are evenly arranged in the circumferential direction; , a staggered angle of 11.25°; the main feature is that there are four layers of distribution plates in the lower part of the machine head, including the bottom distribution plate, the second distribution plate, the third distribution plate, and the fourth distribution plate.
  • each layer distribution plate is circular, and the distribution plates of each layer are sequentially stacked from bottom to top, and the six inner and outer sleeves are arranged above the fourth layer distribution plate;
  • the central axis is located On the central axis of the head; the horizontal interface between the bottom distribution plate and the second distribution plate is the first interface, and the horizontal interface between the second distribution plate and the third distribution plate is the second interface, the third The horizontal interface between the layer distribution tray and the fourth layer distribution tray is a third interface; the fourth layer distribution tray and the six concentric sleeves are also respectively formed with a drum interface;
  • the total feed ports of each flow channel system are located at the circumferential edge of the bottom distribution plate, and its vertical position is lower than the first interface;
  • the total feed inlet of the first set of runner system, the total feed inlet of the second set of runner systems, the total feed inlet of the third set of runner systems, and the total feed inlet of the fourth set of runner systems are staggered 90 The azimuth of °; the total inlet of the first set of runner systems, the vertical inlet of the third set of runner systems, the same vertical position, the total inlet of the second set of runner systems, the fourth set of flows
  • the vertical position of the total feed inlet of the road system is the same, the total feed inlet of the first set of runner systems, the total feed inlet of the second set of runner systems, and the vertical inlet of the fifth set of runner systems Staggered up and down the position;
  • the total feed inlets of each runner system are connected by two horizontally-flowing streams arranged in mirror-symmetric bifurcation From the horizontal projection shape, the two horizontal main flow passages are V-shaped, and the end points of the two horizontal main flow passages are staggered by 180°, and the end points of each horizontal main flow passage are connected with an upward vertical extension.
  • each vertical main flow channel the upper end of each vertical main flow channel is located at the first interface, and the upper end of each vertical main flow channel is connected with two horizontal shunts arranged in a mirror-symmetric bifurcation, and the two horizontal shunts
  • the end points are staggered by an azimuth of 90°; each horizontal shunt is formed at the first interface; each end of the horizontal shunt is connected with a vertical shunt that extends vertically upward, and the vertical shunt is disposed at the second floor Dispensing disc, the upper end of each vertical shunting channel is located at the second interface, and the upper end point of each vertical shunting channel is connected with two horizontal branching channels arranged in a mirror-symmetric bifurcation, and the end points of the two horizontal branching channels Staggered 45° azimuth; each horizontal branch is formed at the second interface; each horizontal branch is connected at its end point with a vertically extending vertical tributary, and the vertical tributary is disposed at the third distribution plate
  • the eccentric distance of the vertical flow channel of the first channel system is greater than the eccentric distance of the vertical channel of the third channel system, and the eccentric distance of the vertical channel of the second channel system is greater than the vertical of the fourth channel system
  • the eccentric distance of the main channel; the eccentric distance of the vertical channel of the first channel system is greater than the eccentric distance of the vertical channel of the second channel system, and the eccentric distance of the vertical channel of the second channel system is greater than the third
  • the eccentric distance of the vertical runner of the runner system, the eccentric distance of the vertical runner of the third runner system is greater than the eccentric distance of the vertical runner of the fourth runner system; the vertical runner of the first runner system
  • the eccentric distance is greater than the eccentric distance of the vertical branch channel of the second flow channel system, and the eccentric distance of the vertical branch channel of the second flow channel system is greater than the eccentric distance of the vertical branch channel of the third flow channel system, and the third set of flows
  • the eccentric distance of the vertical branch channel of the channel system is greater than the eccentric distance of the vertical branch channel of
  • the total inlet of the fifth flow channel system is connected to a horizontal total flow channel, and the end of the horizontal total flow channel is connected with a vertical total flow channel extending vertically upwards, and the vertical total flow channel is located at the bottom distribution plate.
  • An eccentric position, and the vertical total flow path is offset from the total feed opening of the first set of runner systems by an azimuth angle of 18° + 45° ,, where ⁇ is an integer and 0 ⁇ 7; the fifth set of runner systems
  • the upper end point of the vertical total flow channel is located at the first interface, and the upper end point of the vertical total flow channel is connected with two horizontal main flow channels arranged in a mirror-symmetric bifurcation, and the end points of the two horizontal main flow channels are staggered by 180° Azimuth angle, the two horizontal main flow channels are formed at the first interface; each end of the horizontal main flow channel is connected with a vertical vertical flow path extending vertically upward, and the vertical main flow path is disposed on the second distribution plate, each piece The upper end of the
  • the horizontal branching channel is formed at the second interface; the end point of each horizontal branching channel is connected with a vertical vertical dividing channel extending vertically, the vertical dividing channel is disposed on the third layer distribution plate, and each vertical dividing channel is The upper end point is located at the third interface;
  • the eccentric distance of the vertical total flow channel of the fifth flow channel system is smaller than the eccentric distance of the vertical main flow channel of the fourth flow channel system, and the eccentric distance of the vertical main flow channel of the fifth flow channel system is smaller than the fourth set of flow
  • the eccentric distance of the vertical shunt of the road system; the eccentric distance of the vertical shunt of the fifth set of runner systems is less than the eccentric distance of the vertical branch of the fourth set of runner systems;
  • each vertical branching channel of the fifth flow channel system is connected with two horizontally arranged branching channels arranged in a mirror-symmetric bifurcation, and the end points of the two horizontally-organized branching channels are staggered 45 Azimuth of °;
  • the upper end points of the vertical branch passages of the remaining sets of runner systems are respectively connected with a horizontal finishing branch passage;
  • the end points of all forty horizontal tributaries of the five sets of runner systems are located on the same circle on the third interface, and the eccentric distances of the end points of the forty horizontal tributaries are equal and larger than the first set.
  • the eccentric distance of the vertical branch channel of the runner system; the end points of the eight horizontal finishing branch runners of each runner system are evenly distributed in the circumferential direction, and the end points of the adjacent two horizontal finishing branch runners of the same runner system are staggered by 45° Azimuth
  • the end points of the horizontal flow branch of the five sets of runner systems are in the order of the fifth set of runner system, the fourth set of runner system, the second set of runner system, the first set of runner system, and the third set of runner system.
  • the staggered direction is the same as the staggered direction of the vertical total flow path of the fifth set of runner system with respect to the total feed port of the first set of runner system being offset by 18° + ⁇ ⁇ 45°;
  • the end points of each horizontal tributary of the five sets of runner systems are connected to a radially arranged tributary channel, and all forty of the tributaries are placed in the fourth distribution plate and on the same conical surface.
  • the conical surface is large and small, all forty radiating branches are uniformly distributed radially, and each adjacent two radiating branches are staggered by an azimuth of 9°; the same set of flows In the eight radiating tributaries of the system, the radial lengths of the radiating branches are equal, and the adjacent radiating branches are staggered by 45° ⁇ azimuth; the radial lengths of the radiating tributaries of different sets of runner systems are not equal,
  • the radial branch length indirectly connected to the outermost spiral flow path has the longest radial length, and the radial length of the radial branch flow path indirectly connected with the innermost spiral flow path is the shortest, and so on; each set of runner system
  • Each of the end points of each of the radiating branch passages is connected with an upwardly extending vertical finishing branch passage, and each of the vertical rectifying branch passages is formed on the fourth layer distribution tray, and the upper end points of the respective vertical finishing branch passages are located at the corresponding discs Tube interface
  • each vertical finishing branch channel of each flow channel system is connected with two horizontal cross-flows 1 arranged in a mirror-symmetric bifurcation, and the two horizontal cross-flow channels are formed in the corresponding inner sleeve of the set of runner systems 5° ⁇ ;
  • the end of the two horizontal cross-flow channels is offset by an angle of 22. 5°;
  • Each end channel of each horizontal flow channel is connected to two end flow channels arranged in a mirror-symmetric bifurcation, and the two final flow channels are formed in the corresponding inner sleeve of the flow channel system.
  • the two final flow channels respectively extend obliquely upward in different directions to form a V-shape;
  • each of the last-stage flow passages of each set of runner systems respectively correspond to the start point K of one of the spiral runners of the set of runner systems, and each of the last-stage runners of each set of runner systems directly communicates with each other a spiral flow path;
  • the starting point of the spiral flow path of the five sets of runner systems corresponds to the fifth set of runner system, the fourth set of runner system, the second set of runner system, the first set of runner system, and the third set of runner system.
  • Staggered by an azimuth of 9° the staggered direction is the same as the staggered direction of the vertical total flow path of the fifth set of runner systems with respect to the total feed opening of the first set of runner systems being offset by 18° + NX 45°.
  • the machine head since the bubble produced by the machine head has a five-layer structure, the machine head has five sets of flow channel systems corresponding to the five layers of molten material, and each set of flow channel system is formed into several stages according to the split relationship.
  • the naming rules follow certain rules, as follows: The road system is divided into five halves from one total feed port, so each flow channel system has six flow channels, and the upper flow channel is divided into two lower flow at the bifurcation point. The road finally evolved into thirty-two last-level runners.
  • the first-stage flow channel is named as the total flow channel or the total feed inlet, and the number is one or one;
  • the second-stage flow channel is named as the main flow channel, and the same type of structure is used for the main flow channel.
  • the total number is two;
  • the third-stage runner is named as the runner, and the total number of runners in the same structure is four;
  • the fourth-stage runner is named as the tributary, and the total number of tributaries of the same structure is Eight;
  • the fifth-level flow channel is named as a cross-flow channel, the total number of which is sixteen;
  • the sixth-level flow channel is named the last-level flow channel, and the total number is thirty-two.
  • horizontal finishing tributaries are named as “horizontal finishing tributaries” because they have the feature of uniformly arranging the end points of each branch channel to a circle.
  • vertical tributary runners are named because they have the feature of sorting the upper end points of each branch channel to the corresponding disk interface.
  • Disc interface The "spiral flow path" is a common name in the field.
  • Each flow channel has two end points, namely "starting point” and “end point”. The distinction between “starting point” and “end point” of each flow channel is judged according to the flow direction of the molten material at work. When working, the molten material flows from the "starting point"
  • eccentric distance refers to the horizontal distance between the member and the central axis of the nose.
  • radial refers to the radial direction of the nose.
  • the so-called "uniform arrangement in the circumferential direction” means that the circumferential direction of the handpiece is evenly arranged.
  • uniform radial distribution means a uniform radial distribution centering on the central axis of the handpiece.
  • the "azimuth angle” indicates the orientation of the member in the circumferential direction of the handpiece, with the center of the handpiece as a reference point.
  • the spiral flow path starting points of the two flow channel systems correspond to an azimuth angle of 9°, which means that the number of spiral flow path starting points of the two flow channel systems is the same (both are 32), and one of the flow paths
  • Each spiral flow path starting point of the system is offset by an azimuth of 9° from the corresponding one of the spiral flow path starting points of the other flow path system.
  • the so-called two flow paths are arranged in a mirror-symmetric bifurcation, meaning that the two flow paths are separated by a bifurcation point (ie, the upper flow path).
  • the end points are bifurcated, and the two flow paths form a mirror-symmetric relationship with respect to a vertical plane, wherein the vertical plane passes through the bifurcation point and the nose center axis.
  • inner sleeve corresponding to a certain flow channel system means that a spiral flow channel is necessarily provided corresponding to the flow channel system, and the spiral flow channel of the layer must be located at the interface between the inner and outer concentric sleeves.
  • the concentric sleeve on the outer layer is the outer casing, and the concentric sleeve in the inner layer is the inner sleeve corresponding to the runner system.
  • indirect connection between the spiral flow channel and the radial branch channel means that the radiation branch channel must be connected to the spiral flow channel through the vertical alignment branch channel, the flat fork flow path and the final stage flow path, so the spiral flow path and the radiation branch flow
  • the road is not a direct connection, but it has a connection relationship, so it is called an "indirect connection.”
  • the "wrong direction" of the two members means clockwise or counterclockwise.
  • the staggered members since most of the staggered members have a relationship of rotational symmetry or mirror symmetrical bifurcation arrangement, it is not necessary to define the staggered direction, only a few exceptions.
  • the order of the systems corresponds to an azimuth offset of 9°, which is offset from the total feed opening of the fifth set of runner systems by 18° + NX 45° offset from the total feed of the first runner system.
  • the same means: If the total inlet of the fifth runner system is offset 18° + NX 45° counterclockwise with respect to the total inlet of the first runner system, the horizontal arrangement of the five runner systems The end points of the branch runners are arranged according to the level of the fifth set of runner systems, the end points of the branch runners of the fourth set of runner systems, the end points of the horizontal set of runners of the second set of runner systems, and the first set.
  • the horizontal finishing of the runner system and the end point of the horizontal finishing branch of the third set of runner systems are arranged counterclockwise, and sequentially correspond to the azimuth angle of 9°; conversely, if the fifth runner system Total feed phase
  • the end points of the horizontal flow branch of the five runner systems are in accordance with the fifth runner system, the fourth runner system,
  • the second set of runner systems, the first set of runner systems, and the third set of runner systems are arranged in a clockwise sequence and in turn correspond to azimuths offset by 9°.
  • upstream and downstream of the flow path are distinguished according to the flow direction of the molten material at work, and the molten material flows from the upstream to the downstream.
  • the present invention uniformly arranges forty radial branching channels of each flow channel system onto the same conical surface, and the starting points of the radial branching channels of each set of runner systems are located on the same circle, therefore, only one set is needed
  • the layer is used to form the distribution disc of the radial splitter, and the distribution disc of the other layer does not need to be arranged with the radial splitter.
  • the diameter of the fourth layer distribution disc needs to be close to the bubble diameter, and the remaining bottom distribution disc, the second distribution disc, the first
  • the diameter of the three-layer distribution disc can be much smaller than the diameter of the bubble, and the thickness (height) of the distribution layer of the fourth layer is much smaller than the thickness of the stack of all the distribution trays of the conventional structure, so that the head of the invention has a small volume and consumes an alloy.
  • the amount of steel is small, the production cost is reduced, the head processing is facilitated, and the head loading and unloading and transportation are facilitated.
  • the process of producing the plastic film requires a short warm-up time and a small energy consumption in the production process; further, the small size of the handpiece means The sealing surface area of the head is small, which reduces the difficulty of sealing.
  • the invention can evenly distribute the materials of each flow channel system to each spiral flow channel, the flow channel arrangement structure is ingenious, the layering is clear, the five sets of flow channel systems do not interfere with each other, do not cross each other, and are large Part of the flow path is located on the horizontal interface to facilitate flow path processing.
  • the final stage flow path of the present invention is equivalent to the radial flow path in the conventional structure from the viewpoint of the cross-sectional area of the flow path; and the length of the final stage flow path of the present invention is much smaller than the length of the radial flow path in the conventional structure,
  • the pressure loss of the molten material can be reduced, thereby reducing the extrusion pressure and reducing the precision requirements for the sealing interface.
  • the center of the machine head of the present invention does not have a total flow path of the material, so that it can be used to arrange the intake passage. On the other hand, this also helps to reduce the diameter of the lower part of the head.
  • the starting points of the spiral flow paths of the five sets of flow channel systems of the present invention are correspondingly staggered, which is advantageous for the thickness of the bubble to be uniformly distributed in the circumferential direction, which is beneficial to the thickness of the film product.
  • the azimuth angles of the points of the bubble relative to the starting point of the spiral flow path are different, the extrusion thickness of each point of the bubble is not absolutely uniform in the circumferential direction, but there is a slight deviation, and such a slight deviation.
  • 1 is a schematic structural view of a conventional superimposed five-layer co-extrusion head.
  • FIG. 2 is a schematic view of a conventional concentric sleeve type five-layer co-extrusion blown film head.
  • Figure 3 is a schematic diagram of the structure of the spiral flow path and the principle of material flow.
  • Figure 4 is a schematic cross-sectional view of a five-layer co-extruded bubble semi-finished product.
  • Fig. 5 is a schematic view showing the spatial cooperation relationship between the intake passage and the radial flow passage in the conventional structure.
  • Figure 6 is a schematic view showing the structure of a first embodiment of the present invention.
  • Figure 7 is a schematic view showing the structure of the four-layer distribution tray of Figure 6.
  • Figure 8 is a block diagram showing the structure of the underlying distribution tray of Figure 6.
  • Figure 9 is a schematic diagram showing the horizontal projection position relationship of each main component in the bottom distribution tray of Figure 6.
  • Figure 10 is a schematic illustration of the horizontal projection positional relationship of a portion of the main components of Figure 9.
  • Fig. 11 is a schematic diagram showing the horizontal projection positional relationship of another main part of Fig. 9.
  • Figure 12 is a schematic view showing the structure of the E-E in Figure 10.
  • Figure 13 is a schematic view showing the structure of the F-F section in Figure 11;
  • Figure 14 is a top plan view showing the underlying distribution tray of the first embodiment.
  • Figure 15 is a schematic diagram showing the horizontal projection position relationship of each vertical flow path in the second layer distribution tray.
  • Figure 16 is a schematic cross-sectional view of the vertical splitter G-G of Figure 15.
  • Figure 17 is a schematic view showing the structure of the vertical flow passage of the fifth flow path system of Figure 15 on the H-H section.
  • Figure 18 is a top plan view showing the second layer distribution tray of the first embodiment.
  • Figure 19 is a schematic diagram showing the horizontal projection position relationship of each vertical flow path in the third layer distribution tray of the first embodiment.
  • Figure 20 is a schematic view showing the structure of each of the vertical branch passages of Figure 19 on the M-M section.
  • Figure 21 is a schematic view showing the structure of the vertical branching passage of the fifth flow path system of Figure 19 in the N-N section.
  • Figure 22 is a top plan view showing the third layer distribution tray.
  • Figure 23 is a schematic diagram showing the relationship between the horizontal projection position of the horizontal finishing branch channel and the upstream flow channel of each flow channel system.
  • Fig. 24 is a schematic diagram showing the relationship between the horizontal projection position of the horizontal finishing branch passage and the downstream flow passage of each of the runner systems.
  • Figure 25 is a horizontal projection view of a radial branch channel in a fourth layer distribution tray.
  • Figure 26 is a schematic view showing the structure of the W-W section of the fifth flow path system in Figure 25.
  • Figure 27 is a schematic view showing the structure of the R-R section of the first set of runner system in Figure 25.
  • Figure 28 is a schematic view showing the structure of the second set of runner systems in the Q-Q section of Figure 25.
  • Figure 29 is a schematic view showing the structure of the P-P section of the third flow path system in Figure 25.
  • Figure 30 is a schematic view showing the structure of the S-S section of the fourth set of runner system in Figure 25.
  • Figure 31 is a top plan view of the fourth layer distribution tray.
  • Figure 32 is a schematic perspective view showing the final flow path of the third flow path system.
  • Figure 33 is a schematic diagram showing the horizontal projection shape and positional relationship of the final flow passages of each of the runner systems.
  • Figure 34 is a partially enlarged schematic view showing the structure of K in Figure 33.
  • Figure 35 is a partial schematic view of the upper portion of the head of Figure 6.
  • Figure 36 is a schematic diagram showing the horizontal projection position relationship of the spiral flow path starting point of each flow channel system.
  • Figure 37 is a schematic view of a flow path on a third interface of the third embodiment.
  • Figure 38 is a diagram showing the horizontal projection position relationship of each component of the underlying distribution tray of the fourth embodiment.
  • Figure 39 is a schematic view of a flow path on a third interface of the fourth embodiment.
  • Figure 40 is a schematic explanatory view showing the meaning of "mirror-symmetric bifurcation arrangement" of the present invention.
  • the concentric sleeve type five-layer co-extrusion blown film head of this embodiment comprises five sets of flow channel systems, each flow channel system corresponding to one layer of molten material flowing before guiding the film bubble; each flow channel system comprises There is a spiral flow channel located in the upper part of the machine head and a total feed port located in the lower part of the machine head.
  • Fig. 6, Fig. 35 and Fig. 36 there are six concentric sleeves with inner and outer sleeves on the upper part of the machine head.
  • the concentric sleeves 69, 59, 19, 29, 49, 39 are sequentially in order from the outside to the inside.
  • the central axis of the concentric sleeve becomes the central axis m of the head; a spiral flow path is formed between the interfaces of each adjacent two concentric sleeves, and the five spiral flow paths are from the outside to the inside according to the diameter.
  • they are the outermost spiral flow path 57, the secondary outer spiral flow path 17, the intermediate layer spiral flow path 27, the secondary inner layer spiral flow path 47, and the innermost layer spiral flow path 37.
  • Each spiral flow channel has thirty-two spiral flow channels; each spiral flow channel has a spiral flow path starting point, and the whole machine head has a total of one hundred and sixty spiral flow path starting points; The outermost spiral flow path starting point 58, the thirty-second outer spiral flow path starting point 18, the thirty-two intermediate layer spiral flow path starting point 28, and the thirty-two inner inner layer spiral flow path starting point 48 Thirty-two innermost spiral flow path starting points 38.
  • a four-layer distribution tray is provided at the lower portion of the handpiece, and includes a bottom distribution tray 71, a second distribution tray 72, a third distribution tray 73, and a fourth distribution tray 74, each of which The horizontal projection shape of the layer distribution tray is circular, and the bottom distribution tray 71, the second layer distribution tray 72, the third layer distribution tray 73, and the fourth layer distribution tray 74 are sequentially stacked from bottom to top, and the six inner and outer layers are stacked.
  • the mutually concentric sleeves 69, 59, 19, 29, 49, 39 are disposed above the fourth layer distribution tray 74; the central axis of each layer distribution tray is located on the central axis m of the head; the bottom distribution tray 71 and the The horizontal interface between the two-layer distribution trays 72 is the first interface 81, and the horizontal interface between the second-layer distribution tray and the third-layer distribution tray is the second interface 82, and the third-layer distribution tray and the fourth layer are allocated.
  • the horizontal interface between the disks is the third interface 83; the fourth layer distribution plate and the six concentric sleeves are also respectively formed with the disk interfaces 96, 95, 91, 92, 94, 93, each of the disk interfaces 96, 95 , the vertical positions of 91, 92, 94, 93 are not in the same horizontal plane; See degree, first interface, second interface, the third interface, the interface of each plate cylinder are annular.
  • the total feed ports of each of the runner systems are located at the circumferential edge of the bottom distribution tray 71, and their vertical positions are lower than the first interface.
  • the feed port 41 is sequentially offset by a 90° azimuth in a counterclockwise order; the total feed port 11 of the first set of runner systems, the total feed port 31 of the third set of runner systems have the same vertical position, and the second set of flows
  • the vertical feed position of the total feed port 21 of the channel system and the total feed port 41 of the fourth set of runner system is the same, the total feed port 11 of the first set of runner systems, and the total feed of the second set of runner systems
  • the vertical position of the total feed opening 510 of the port 21 and the fifth set of runner systems is shifted up and down.
  • the horizontally-average flow path 121 of the mirror-symmetric bifurcation arrangement has a V-shape as viewed from a horizontal projection shape, and the end points of the two horizontal main flow paths 121 are offset by an azimuth angle of 180°, and each horizontal main flow path 121
  • the end point is connected to a vertical vertical flow channel 122 extending vertically upwards.
  • the upper end point of each vertical main flow channel 122 is located at the first interface, and the upper end points of each vertical main flow channel 122 are connected by two mirror-symmetric points.
  • each horizontal split runner 131 is formed at the first interface; and each of the horizontal split runners has an upward vertical point connected to each other
  • An extended vertical shunt 132 a vertical shunt 132 is disposed on the second distribution tray 72, and an upper end of each vertical shunt 132 is located at the second interface 82;
  • the first set of runner systems has four vertical shunts 132, they are staggered by 90° azimuth, each vertical
  • the upper end point of the straight branching channel is connected with two horizontal branching channels 141 arranged in a mirror-symmetric bifurcation.
  • the end points of the two horizontal branching channels 141 are staggered by an azimuth of 45[deg.]; the horizontal branching channels 141 are formed at the second interface 82. ; ending point of each of the horizontal branch passage 141 communicates with a vertical branch passage 142 which extends vertically upward a vertical branch passage 142 provided in the third layer distribution plate 73, each vertical branch passage 142 is positioned on the first end The third interface 83; the first set of runner systems has a total of eight vertical branch runners 142 which are sequentially offset by an azimuth of 45°.
  • the total inlet 31 of the third flow channel system is connected by two The horizontal trunk flow path 321 of the mirror-symmetric bifurcation arrangement, the two horizontal main flow channels 321 are V-shaped when viewed from a horizontal projection shape, and the end points of the two horizontal main flow channels 321 are staggered by an azimuth angle of 180°, and each horizontal main flow The end point of 1 321 is connected with a vertical vertical flow channel 322 extending vertically upwards.
  • each vertical main flow channel 322 is located at the first interface 81, and the upper end of each vertical main flow channel 322 is connected by two a mirror-symmetric bifurcated horizontal shunt 331, the end points of the two horizontal shunts 331 are staggered by an azimuth of 90°; each horizontal shunt 331 is formed at the first interface 81; each d bisects the end point of the runner 331 Connected with a vertically extending vertical splitter 332, each vertical splitter 332 is disposed on the second layer distribution tray 72, and the upper end of each vertical split runner 332 is located at the second interface 82; the third set of runners
  • the system has four vertical DC channels 332, which are sequentially shifted by an azimuth of 90°.
  • each vertical shunt 332 is connected with two horizontal branch channels 341 arranged in a mirror-symmetric bifurcation.
  • the two horizontal branch channels are connected.
  • the end points of 341 are staggered by an azimuth of 45°; each horizontal branch flow path M1 is formed at the second interface 82; the end point of each horizontal branch flow path 341 is connected with a vertically extending vertical branch flow path 342, g straight branch flow path 342 is disposed on the third layer distribution tray 73
  • Each vertical branch passage 342 is positioned on the end of the third interface 83; runner system has a third set of eight vertical branch passage 342, which in turn shifted azimuth angle of 45 °.
  • the total inlet 21 of the second flow channel system is connected by two The horizontal trunk flow path 221 of the mirror-symmetric bifurcation arrangement, the two horizontal main flow paths 221 are V-shaped when viewed from a horizontal projection shape, and the end points of the two horizontal main flow paths 221 are offset by an azimuth angle of 180°, and each horizontal main flow path 221
  • the end point is connected with a vertical vertical flow channel 222 extending vertically upwards.
  • the upper end point of each vertical main flow channel 222 is located at the first interface 81, and the upper end points of each vertical main flow channel are connected by two mirror-symmetric points.
  • each horizontal runner 231 is formed at the first interface 81; and an end point of each horizontal runner is connected to the vertical Straight extending vertical shunt 232, vertical shunt 232 is disposed on the second distribution tray 72, the upper end of each vertical shunt 232 is located at the second interface 82; the second set of flow system has four vertical shunts Road 232, they The first azimuth of 90° is shifted, and the upper end of each vertical branching channel 232 is connected with two horizontal branching channels 241 arranged in a mirror-symmetric bifurcation.
  • each horizontal branch channel 241 is formed at the second interface 82; each end of the horizontal branch channel 241 is connected with a vertically extending vertical branch channel 242, and the vertical branch channel 242 is disposed on the third layer distribution tray 73.
  • the upper end of each vertical branch passage 242 is located at the third interface 83; the second set of runner systems has eight vertical branch passages 242 which are sequentially offset by an azimuth of 45°.
  • the total inlet 41 of the fourth set of runner systems is connected by two
  • the horizontally-circumferential flow path 421 of the mirror-symmetric bifurcation arrangement the two horizontal main flow channels 421 have a V-shape as viewed from a horizontal projection shape, and the end points of the two horizontal main flow channels 421 are offset by an azimuth angle of 180°, and each horizontal main flow path 421
  • the end point is connected with a vertical vertical flow channel 422 extending vertically upwards.
  • the upper end point of each vertical main flow channel 422 is located at the first interface 81, and the upper end points of each vertical main flow channel 422 are connected by two mirrors.
  • the horizontal branching channel 431 of the bifurcated arrangement the end points of the two horizontal branching channels 431 are staggered by an azimuth of 90°, and the horizontal dividing channels 431 are formed at the first interface 81; one end point of each horizontal branching channel 431 is connected a vertical shunt 432 extending vertically upwards, a vertical shunt 432 disposed on the second distribution tray 72, the upper end of each vertical shunt 432 is located at the second interface 82; the fourth set of runner systems has four vertical Straight shunt 432 They are sequentially shifted by an azimuth of 90°, and the upper end of each vertical branching passage 432 is connected with two horizontal branching passages 441 arranged in a mirror-symmetric bifurcation, and the end points of the two horizontal branching passages 441 are staggered by 45°.
  • the horizontal branch passages 441 are formed at the second interface 82; the end points of each of the horizontal branch runners 441 are connected with a vertically extending vertical branch passage 442, and the vertical branch passages 442 are disposed on the third layer distribution tray 73.
  • the upper end of each vertical branch passage 442 is located at the third interface 83.
  • the fourth set of runner systems has a total of eight vertical branch passages 442 which are sequentially offset by an azimuth of 45°.
  • the eccentric distance of the vertical flow passage 122 of the first flow passage system is greater than the eccentric distance of the vertical main flow passage 322 of the third flow passage system, and the eccentricity of the vertical vertical flow passage 222 of the second flow passage system.
  • the distance is greater than the eccentric distance of the vertical flow channel 422 of the fourth flow channel system; the eccentric distance of the vertical flow channel 132 of the first flow channel system is greater than the eccentric distance of the vertical flow channel 232 of the second flow channel system, the second set
  • the eccentric distance of the vertical shunt 232 of the runner system is greater than the eccentric distance of the vertical shunt 332 of the third set of runner systems, and the eccentric distance of the vertical shunt 332 of the third set of runner systems is greater than the vertical of the fourth set of runners
  • the eccentric distance of the runner 432; the eccentric distance of the vertical runner 142 of the first runner system is greater than the eccentric distance of the vertical runner 242 of the second runner system, and the eccentricity of the vertical runner 242 of the second
  • the total S material port 510 of the fifth flow channel system is connected with a horizontal total flow channel 511.
  • the end of the horizontal total flow passage 511 is connected with a vertical vertical flow passage 512 extending vertically, the vertical total flow passage 512 is located at an eccentric position of the bottom distribution disc 71, and the vertical total flow passage 512 is opposite to the first flow.
  • the total feed port 11 of the track system is offset counterclockwise by an azimuth of 63°; the upper end of the vertical total flow passage 512 of the fifth set of runner system is located at the first interface 81, and the upper end of the vertical total flow passage 512 is connected by two
  • the strips are arranged in a mirror-symmetric bifurcation of the horizontal main flow passages 521, and the end points of the two horizontal main flow passages 521 are offset by an azimuth angle of 180°.
  • the two horizontal main flow passages 521 are formed at the first interface 81; each horizontal main flow passage 521 The end point is connected with a vertical vertical flow passage 522 extending vertically upwards, the vertical dry flow passage 522 is disposed on the second distribution tray 72, and the upper end of each vertical vertical flow passage 522 is located at the second interface 82;
  • the upper vertical point of the vertical flow passage 522 is connected by two horizontal splits arranged in a mirror-symmetric bifurcation 531, two end points of the horizontal runner 531 is shifted azimuth angle of 90 3, each horizontal runner 531 is formed on the second interface 82; each of the horizontal branch passages 531 communicated with an end point of a vertical extending vertically to seven
  • the vertical shunt 532 is disposed on the third distribution tray 73.
  • the _t end of each vertical shunt 532 is located at the third interface 83.
  • the fifth set of runner systems has four vertical shunts 532. They are staggered by a 90° azimut
  • the eccentric distance of the vertical total flow passage 512 of the fifth flow passage system is smaller than the eccentric distance of the vertical flow passage 422 of the fourth flow passage system, and the vertical flow of the fifth flow passage system
  • the eccentric distance of the main flow passage 522 is smaller than the eccentric distance of the vertical distribution passage 432 of the fourth flow path system; the eccentric distance of the vertical distribution passage 532 of the fifth set of flow passage system is smaller than the straight flow path of the fourth set of flow passage system.
  • each vertical branching passage 532 of the fifth set of runner system is connected with two horizontally-arranged branching passages 543 arranged in a mirror-symmetric bifurcation, the two levels
  • the end points of the tributary runners 543 are staggered by a square angle of 45°, and the two horizontal tributary runners 543 are connected in a U shape;
  • the fifth set of runner systems has a total of eight horizontal tributaries 543; FIG. 22 and FIG.
  • the upper end points of the vertical branch channels of the remaining flow channel systems are respectively connected with a horizontal finishing branch flow channel, that is, eight vertical lines of the first flow channel system
  • the upper end points of the branch passages 142 are respectively connected with a horizontal finishing branch passage 143, and the upper end points of the eight vertical branch passages 242 of the second set of runner systems are respectively connected with a horizontal finishing branch passage 243, and eight of the third set of runner systems
  • the upper end of the vertical branch channel 342 is connected to a horizontal finishing branch channel 343, and the upper end points of the eight vertical branch channels 442 of the fourth channel system are respectively connected with a water finishing branch channel 443;
  • the end points of all forty horizontal tributaries of the five sets of runner systems are located on the same circle on the third interface 83, forty levels of finishing
  • the eccentric distances of the end points of the branch runners are all equal, and the eccentric distance of the vertical branch runners 142 of the first set of runner systems is large;
  • the end points of the eight horizontally-organized branch runners of each runner system are evenly distributed in the ⁇ direction,
  • the adjacent two horizontal finishing branch runners of the same runner system are staggered by an azimuth of 45°;
  • the end points of the horizontal finishing branch of the five sets of runner systems are in accordance with the fifth set of runner systems, the fourth set of runner systems, the second set of runner systems, the first set of runner systems, and the third set of flows.
  • the counterclockwise order of the track system corresponds to the azimuth angle staggered by 9°
  • I the horizontal end of the fourth set of runner system is offset counterclockwise from the end point of the horizontal flow branch of the fifth set of runner system 9
  • the horizontal finishing branch end point is opposite to the second set of runner system horizontal finishing branch end point corresponding to azimuth angle of 9° counterclockwise, and the third set of runner system horizontally finishing the branch end point relative to the first set of flow
  • the horizontal finishing end of the track system corresponds to an azimuth angle of 9° counterclockwise.
  • forty black dots in Fig. 22 are sequentially shifted by an azimuth of 9°.
  • each horizontally-organized branch channel of the five sets of runner systems are connected with a radially arranged radiating branch channel, and the radial lengths of the radiating branch channels of different sets of runner systems are not equal.
  • the first set of runner system the second set of runner system, the fourth set of runner system, and the third set of runner system; wherein, the fifth set of runner system
  • the length of the radial branch channel 544 is the longest, the length of the radiation branch channel 144 of the first channel system is second, and the length of the radiation branch channel 244 of the second channel system is the third, the fourth set of channel system
  • the length of the tributary tributary 444 is fourth, and the length of the tributary 344 of the third set of runner systems is the fifth (shortest).
  • the radial branch channel 544 of the fifth channel system is indirectly connected to the outermost spiral channel 57, and the radiation branch channel 144 of the first channel system is indirectly connected to the secondary outer spiral channel 17.
  • the radial branch channel 244 of the second channel system is indirectly connected to the intermediate layer spiral channel 27, and the radiation branch channel 444 of the fourth channel system is indirectly connected to the secondary inner layer spiral channel 47, and the third set of flows
  • the radial branch channel 344 of the track system is indirectly connected to the innermost spiral flow channel.
  • all forty of the radiating branch passages 544, 144, 244, 144, and 344 are disposed in the fourth-layer distribution tray 74, and all four Ten radial tributaries are located on the same conical surface, which is larger and smaller, which means that the starting points of all forty radial branches are at the same horizontal plane (third interface 83) and are in the same circle.
  • the inclination angles formed by all the forty radial branches and the horizontal plane (the third interface 83) are the same, and the extension lines of all forty radial branches are passed through the same point on the central axis of the nose.
  • each end of each radial branching channel is connected with an upwardly extending vertical finishing branch flow path, and each vertical finishing branch channel is formed.
  • the upper end points of the vertical finishing branch channels are located at the corresponding disk interface; each of the channel systems has a total of eight vertical finishing branch channels; wherein, the vertical direction of the fifth channel system
  • the upper end point of the finishing branch passage 545 is located at the drum interface 95 corresponding to the corresponding inner sleeve 59, as shown in FIG. 6 and FIG. 26; the upper end point of the vertical finishing branch passage 145 of the first set of flow passage system is located in the corresponding inner sleeve.
  • the upper end point of the vertical finishing branch passage 245 of the second flow path system is located at the drum interface 92 corresponding to the inner sleeve 29, as shown in FIG. 6 and FIG.
  • the upper end of the vertical finishing branch 445 of the fourth set of runner systems is located at the drum interface 94 corresponding to the inner sleeve 49, as shown in Figures 6 and 29; the vertical finishing of the third set of runner systems
  • the upper end of the branch channel 345 is located at the corresponding disk interface 33, as shown in Figures 6 and 30.
  • each vertical finishing branch channel of each flow channel system is connected with two horizontal cross flow channels arranged in a mirror-symmetric bifurcation. 5° ⁇ The end points of the two horizontal cross-flow channels are staggered by an azimuthal angle of 22.5°.
  • Each flow channel system has a total of sixteen horizontal fork flow paths, and the end points of the horizontal flow channels of the same flow channel system (shown as small black dots in Fig. 31) are evenly staggered in the circumferential direction, and are sequentially shifted by 22. Azimuth of 5°.
  • the horizontal fork channel 15 of the first channel system is formed on the drum interface 91 of the inner sleeve 19 corresponding to the sleeve system
  • the horizontal fork channel 25 of the second runner system is formed in the sleeve
  • the drum system interface 92 of the inner sleeve 29 corresponding to the road system, and the horizontal fork flow path 35 of the third set of runner system are formed on the drum interface 93 of the inner sleeve 39 corresponding to the sleeve system, and the fourth flow path
  • the horizontal fork passage 45 of the system is formed on the drum interface 94 of the corresponding inner sleeve 49 of the sleeve system
  • the horizontal fork passage 55 of the fifth runner system is formed on the corresponding inner sleeve of the runner system.
  • each horizontal cross flow channel of the third flow channel system is connected with two final flow channels 36 arranged in a mirror-symmetric bifurcation, the two The last stage flow passage 36 is formed in the corresponding inner sleeve 39 of the sleeve flow channel system, and the two final stage flow passages 36 respectively extend obliquely upward in different directions to form a V-shape, as shown in FIG. 32;
  • the runner system has a total of thirty-two last stage runners 36.
  • each of the last flow passages 36 of the third flow path system respectively correspond to the position of one of the spiral flow path start points 38 of the set of flow path systems, and each of the last flow paths of the third set of flow path systems 36 directly connected to a corresponding spiral flow path 37 (the innermost spiral flow path);
  • each horizontal cross flow path of the first flow path system is connected with two final flow paths 16 arranged in a mirror-symmetric bifurcation, the two final stages.
  • the flow passage 16 is formed in the corresponding inner sleeve 19 of the runner system, and the two final flow passages 16 respectively extend obliquely upward in different directions to form a V shape (the shape of which is similar to the structure shown in FIG. 32).
  • the first set of runner systems has a total of thirty-two last-stage runners 16.
  • each of the last flow passages 16 of the first flow path system respectively correspond to the position of one of the spiral flow path start points 18 of the set of flow path systems, and each of the last flow paths of the first set of flow path systems 16 directly connected to a corresponding spiral flow channel 17 (secondary spiral flow path);
  • each horizontal cross flow path of the second flow path system is connected to two final flow paths 26 arranged in a mirror-symmetric bifurcation, the two final stages.
  • the flow passage 26 is formed in the corresponding inner sleeve 29 of the runner system, and the two final flow passages 26 respectively extend obliquely upward in different directions to form a V shape (the shape of which is similar to the structure shown in FIG. 32).
  • First There are thirty-two last stage runners 26 in the two sets of runner systems.
  • each of the last flow passages 26 of the second flow path system respectively correspond to the position of one of the spiral flow path start points 28 of the set of flow path systems, and each of the last flow paths of the second set of flow path systems 1 ⁇ 2 directly connected to a corresponding spiral flow path 27 (intermediate spiral flow path);
  • each horizontal cross flow path of the fourth flow path system is connected with two final flow paths 46 arranged in a mirror S-symmetric bifurcation.
  • the flow path 46 is formed in the corresponding inner sleeve 49 of the runner system, and the two final flow passages 46 respectively extend obliquely upward in different directions to form a V shape (the shape is similar to the structure shown in FIG. 32).
  • the a set of runner systems has a total of thirty-two last-stage runners 46.
  • the end points of each of the last-stage runners 46 of the fourth runner system are respectively associated with one of the spiral runners of the runner system. 48 positions are the same, each of the last flow channels of the fourth flow channel system is directly connected to a corresponding spiral flow channel 47 (second inner spiral flow channel);
  • each horizontal cross flow path of the fifth flow path system is connected with two final flow paths 56 arranged in a mirror-symmetric bifurcation, the two final stages.
  • the flow passage 56 is formed in the corresponding inner sleeve 59 of the runner system, and the two final flow passages 56 extend obliquely upward in different directions to form a V-shape (the structure is similar to the structure shown in FIG. 32).
  • the fifth set of runner systems has a total of thirty-two last-stage runners 56.
  • the end points of each of the last-stage runners 56 of the fifth runner system are respectively associated with one of the spiral runners of the runner system.
  • the positions of the fifth flow channel system are directly connected to the corresponding one of the spiral flow paths 57 (the outermost spiral flow path);
  • the spiral flow path starting points of the five runner systems are in accordance with the fifth set of runner systems, the fourth set of runner systems, the second set of runner systems, the first set of runner systems, and the third set of runners.
  • the counterclockwise order of the system corresponds in turn to an azimuth angle of 9°, specifically
  • the spiral flow path starting point 38 of the third flow path system is offset from the spiral flow path starting point 18 of the first flow path system by an azimuth angle of 9° in reverse time, as shown by Z4 in Fig. 36;
  • the spiral flow path starting point 18 of the first flow path system is offset from the spiral flow path starting point 28 of the second flow path system by an azimuth angle of 9° in reverse time, as shown by 3 in Fig. 36;
  • the spiral flow path starting point 28 of the second flow path system is offset from the spiral flow path starting point 48 of the fourth flow path system by an azimuth angle of 9° counterclockwise, as shown in Fig. 36;
  • the spiral flow path starting point 48 of the fourth flow path system is offset from the spiral flow path starting point 58 of the fifth flow path system by an azimuth angle of 9° counterclockwise, as indicated by Z 1 in FIG.
  • the spiral flow path starting point 58 of the fifth flow path system is the starting point of the outermost spiral flow path 57
  • the spiral flow path starting point 18 of the first set of flow path system is the second outer layer.
  • the starting point of the spiral flow path 17, the starting point of the spiral flow path of the second flow path system, that is, the starting point of the spiral flow path 27 of the intermediate layer, and the starting point 48 of the spiral flow path of the fourth flow path system is the starting point of the innermost spiral flow path 37.
  • the starting points of the thirty-two spiral flow paths of each flow channel system are arranged in the circumferential direction, and the azimuth angles of 11.25° are sequentially shifted.
  • each head As shown in Fig. 6, the flow path of each head is not occupied by each material flow path, so a circular intake passage 10 may be provided at the center of the machine head.
  • the vertical total flow passage 512 of the fifth flow path system is offset from the total feed opening 11 of the first flow path system by an azimuth angle of 153°, and the staggered direction is counterclockwise.
  • the structures of the first set of runner system, the second set of runner system, and the fourth set of runner systems of the second embodiment are identical to those of the first embodiment, and the fifth set of the second embodiment.
  • the runner system is offset 90° counterclockwise with respect to the fifth set of runner systems of the first embodiment.
  • the fifth flow path system of the second embodiment starts from the horizontal finishing branch flow path 543, and the downstream flow path (including the horizontal finishing branch flow path 543) is symmetrically the same with respect to the center rotation of the handpiece by 90°. Therefore, the second embodiment The fifth flow path system starts from the horizontal finishing branch flow path 543, and the downstream flow path is the same as the first embodiment.
  • the vertical total flow passage 512 of the fifth flow passage system may be changed to a counterclockwise offset angle of 18° +45° X 5 with respect to the total feed opening 11 of the first flow passage system, or 18° +45° X 7.
  • the vertical total flow passage 512 of the fifth flow passage system is offset from the total feed opening 11 of the first flow passage system by an azimuth angle of 18°, and the staggered direction is counterclockwise;
  • the first set of runner system, the second set of runner system, and the fourth set of runner system of the third embodiment are identical to those of the first embodiment, and the third embodiment
  • the five sets of runner systems are offset clockwise by 45° from the fifth set of runners of the first embodiment, and the runner distribution on the third interface is shown in FIG.
  • the fifth set of runner system of the third embodiment starts from the radial branch channel 544, and the downstream flow channel (including the radiation branch straight 544) is symmetrically the same with respect to the center of the handpiece by 45°, and therefore, the third embodiment
  • the five sets of runner systems start from the tributary 544 sweat, and the downstream runners are identical to the first embodiment.
  • the vertical total flow passage 512 of the fifth flow passage system can be changed to a counterclockwise offset angle of 18° +45° X 2 with respect to the total feed opening U of the first flow passage system. , or 18° +45° X 4, or 18° +45° X 6.
  • the vertical total flow passage 512 of the fifth flow passage system is erroneously 63° azimuth with respect to the total feed opening 11 of the first flow passage system, and the staggered direction is clockwise;
  • the structure and the structure of the first set of runner system, the second set of runner system, and the fourth set of runner system of the fourth embodiment is shifted clockwise by 126° with respect to the fifth set of runner system of the first embodiment, and the horizontal projection positions of the main components of the bottom distribution disc are as shown in the figure. 38 is shown.
  • the end points of the horizontal finishing branch passages of the five sets of runner systems are in accordance with the fifth set of runner system, the fourth set of runner system, the second set of runner system, the first set of runner system, and the third set.
  • the clockwise sequence of the runner system corresponds in turn to an azimuth offset of 9°, as shown in FIG. 39;
  • the five sets of flow path systems respectively extend one-to-one to the outermost spiral flow path 57, the outer outer spiral flow path 17, the intermediate layer spiral flow path 27, and the inner inner layer.
  • the spiral flow channel is indirectly connected to the radial branch channel of the first flow channel system, and the secondary outer spiral flow channel is indirectly connected with the radial branch channel of the second flow channel system, the intermediate layer spiral flow path and the third set of flow path
  • the radial branch passages of the system are indirectly connected, and the secondary inner spiral flow passages are indirectly connected with the radial branch passages of the fourth set of runner systems, and the innermost spiral flow passages are indirectly connected with the radial branch passages of the fifth set of runner systems.
  • the vertical total flow passage 512 of the fifth set of runner system can be changed to a clockwise offset angle of 18° +45° X 2 with respect to the total feed port 11 of the first runner system. , or 18° +45° X 3, or 18° +45° X 6, and so on.
  • the so-called two flow paths are arranged in a mirror-symmetric bifurcation, meaning that the two flow paths 101, 102 are branched by a bifurcation point Z, and the two flows
  • the tracks 101, 102 form a mirror-symmetric relationship with respect to a vertical plane n, wherein the vertical plane n passes through the bifurcation point Z and the central axis of the handpiece, and the central axis of the handpiece is represented by point 0 in FIG.

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Abstract

一种同心套筒式五层共挤吹膜机头，包括有五套流道系统，每套流道系统对应引导一层熔融物料流动；每套流道系统包括有位于机头上部的一层螺旋流道、位于机头下部的一个总进料口；在机头下部设有四层分配盘，包括底层分配盘、第二层分配盘、第三层分配盘、第四层分配盘；五套流道系统的所有四十条水平整理支流道的末端点位于第三界面上的同一个圆上，四十条水平整理支流道的末端点的偏心距离均一致相等，且大于第一套流道系统竖直支流道的偏心距离；每一套流道系统的八条水平整理支流道末端点在周向上均匀分布，同一套流道系统的相邻两个水平整理支流道末端点错开45°的方位角。该吹膜机能够生产大幅宽的五层共挤塑料膜，且其机头体积小，便于加工。

Description

同心套筒式五层共挤吹膜机头 技术领域
本发明属于塑料吹膜设备的技术领域，具体涉及一种生产五层共挤塑料薄膜的同心套筒式五 层共挤吹膜机头。
背景技术
生产塑料薄膜的多层共挤吹膜机头主要有两类， 第一类是叠加式多层共挤吹膜机头， 第二类 是同心套筒式多层共挤吹膜机头。 这两类机头的结构差别很大， 工作时熔融物料的流动方式也差 别很大。
叠加式多层共挤吹膜机头的各层物料的圆环形模口直径相同， 且布置成为上下叠加形式， 都 位于一条环形的竖向流道旁边。 挤出时， 各层物料沿环形的竖向流道上升， 于是， 下层的圆环形 模口挤出的物料自动形成塑料膜泡内层， 上层的圆环形模口挤出的物料自动包围在内层的外围而 形成膜泡外层。 图 1是现有一种叠加式五层共挤机头的结构示意图， 设有多条水平流道 62， 在机 头中央设有环形的竖向总流道 61， 各条水平流道 62的内端汇合连接到竖向总流道 61。
而同心套筒式五层共挤吹膜机头从外到内设有五层螺旋流道， 各层螺旋流道布置成为内外互 套的同心圆形式， 每层螺旋流道设有多条螺旋流道； 图 3所示， 每一条螺旋流道 47分别有一个螺 旋流道起始点 48 (图 3只示意出其中一层螺旋流道 47)， 于是， 每一层熔融物料经过对应一层的 的多条螺旋流道 47向上流动分配 （如图 3中箭头所示)， 最终各层物料在螺旋流道上方汇合时， 位于内层的螺旋流道挤出的熔融物料自动形成塑料膜泡内层 97， 位于外层的螺旋流道挤出的熔融 物料自动形成塑料膜泡外层 98， 依此类推， 形成多层共挤膜泡 9， 如图 4所示。
图 2是现有一种同心套筒式五层共挤吹膜机头的结构及工作原理示意图，它设有五套流道系 统， 每套流道系统对应引导膜泡的其中一层物料流动。 在机头上部设有六个内外互套的同心套筒 69、 59、 19、 29、 49、 39, 各同心套筒依筒径大小从外向内依次套合， 每相邻两个同心套筒之间 的交界面之间形成有一层的螺旋流道（每一层的螺旋流道属于对应的一套流道系统）， 五层螺旋流 道 57、 17、 27、 47、 37依直径大小从外向内依次排列， 其中每套流道系统的螺旋流道数量有 32 条， 同一套流道系统的各螺旋流道沿周向均匀分布， 同一层每相邻两条螺旋流道的起始点在周向 上错开的角度相等（错开 11. 25° )0 每条螺旋流道的起始点对应连接一条放射状流道 44。 从周向 上看， 同一套流道系统（即同一层物料） 的放射状流道 44呈均匀的放射状分布， 如图 5所示， 不 同套流道系统的放射状流道 44的方位角没有对应错开， 即布置在相同的方位角度上， 各套流道系 统的放射状流道在水平投影位置上重叠， 每一套流道系统 （即引导每一层物料） 的放射状流道对 应设置在一个圆环形的分配盘中， 整个机头共需要五个圆环形的分配盘， 且五个圆环形的分配盘 上下叠加， 如图 2所示。
为了使同一套流道系统的各条放射状流道 44的物料得到均匀分配，现有同心套筒式五层共挤 吹膜机头中， 将各套流道系统的的总流道 5都布置到机头的中心轴线上， 各套流道系统的总流道 5从上至下依次布置， 熔融物料进入总流道 5后沿径向放射状分配到各条放射状流道 44， 然后再 进入对应流道系统的螺旋流道 57、 17、 27、 47、 37 。
另外， 为了使膜泡吹胀， 必须向膜泡内腔输入带有一定压力的气体， 为此还需要设置进气通 道， 进气通道只能设置在机头中。
但图 2所示的现有上述结构形式主要适合于生产幅宽不大的塑料膜产品， 而不适合生产幅宽 大的塑料膜产品。 这是因为， 塑料膜产品幅宽越大， 挤出的膜泡直径越大； 例如， 生产普通塑料 膜产品过程中挤出的膜泡直径只有 1-2米， 而生产大幅宽的农用塑料膜产品过程中挤出的膜泡直 径达到 3-4米。 在图 2中， BC表示内层螺旋流道 37的直径， AD表示外层螺旋流道 57的直径， d 表示刚挤出的膜泡直径（本申请文件中， 膜泡直径是指还未吹胀时的直径)； 当图 2所示的结构形 式应用于生产幅宽大的农用膜时， d的数值将变为大于 3米， 图 2中的 BC距离及 AD距离需要相 ¾变化扩大到 3-4米左右， 且直径 3-4米左右的分配盘 6有五层之多， 五层分配盘 6叠加起来的 ¾度 （图 2中 h所示） 通常超过 1. 5米，进而造成以下问题：
一、 机头的体积十分庞大， 耗用合金钢材量多， 这无疑增加制作成本 （制作吹膜机头需要采用特 种合金钢材， 其价格十分昂贵）；
二、 机头的的体积大、 重量大， 造成加工十分困难， 甚至导致普通的加工机床难以胜任加工任务； 三、 装卸、 运输麻烦， 普通的吊车难以胜任吊装任务；
四、 机头的的体积大， 造成生产塑料膜过程需要预热时间长， 生产过程耗能大；
五、 机头的的体积大， 意味着密封界面面积大， 密封更加困难；
六、 放射状流道的截面小且它们持续延伸的长度大 (每一条放射状流道的长度超过 3米)， 而截面 小的流道对熔融物料的压力损耗很大， 因此机头生产时需要的挤出压力大， 又会加剧密封困 难的程度， 对密封界面的精密度要求相当高；
七、机头中心部位被各套流道系统的的物料总流道 5占据， 因此穿过机头下部的进气通道 10只能 布置在偏心部位， 且被夹在其中两条放射状流道 44之间的扇形区域中， 如图 5所示； 而大直 径膜泡必然要求进气通道的管径足够大， 所以要求进气通道的偏心距离足够大 （如果偏心距 离太小， 则两条放射状流道之间的扇形区域的宽度无法容纳进气通道)， 这又从另一方面决定 了机头下部的直径难以缩小。
由于上述原因， 现有技术中， 尚未有挤出模口直径超过 3米的同心套筒式五层共挤吹膜设备， 现有膜泡直径超过 3 米的大幅宽塑料膜不能采用五层共挤设备进行生产， 一般只能采用单层 挤出设备进行生产。
发明内容
本发明的目的在于克服上述缺点而提供一种同心套筒式五层共挤吹膜机头，它能够生产大幅 宽的五层共挤塑料膜， 且其机头体积小， 便于加工。
其目的可以按以下方案实现：一种同心套筒式五层共挤吹膜机头， 包括有五套流道系统， 每 套流道系统对应引导一层熔融物料流动； 每套流道系统包括有位于机头上部的一层螺旋流道、 位 于机头下部的一个总进料口；
其中， 机头上部设有六个内外互套的同心套筒， 各同心套筒依筒径大小从外到内依次套合， 各同心套筒共同的中心轴线成为机头的中心轴线； 每相邻两个同心套筒的交界面之间形成有一层 所述的螺旋流道， 五层螺旋流道依直径大小从外到内依次排列， 每层螺旋流道设有三十二条螺旋 流道； 每一条螺旋流道分别有一个螺旋流道起始点， 整个机头共有一百六十个螺旋流道起始点； 同一层螺旋流道的三十二个螺旋流道起始点在周向上均匀布置， 依次错开 11. 25° 的方位角； 其主要特征在于， 在机头下部设有四层分配盘， 包括底层分配盘、 第二层分配盘、第三层分 配盘、 第四层分配盘， 各层分配盘的水平投影形状呈圆环形， 各层分配盘从下到上依次叠置， 所 述六个内外互套的同心套筒设置在第四层分配盘的上方； 各层分配盘的中心轴线位于机头的中心 轴线上； 底层分配盘与第二层分配盘之间的水平交界面为第一界面， 第二层分配盘与第三层分配 盘之间的水平交界面为第二界面， 第三层分配盘与第四层分配盘之间的水平交界面为第三界面； 第四层分配盘和六个同心套筒也分别形成有盘筒界面；
各套流道系统的总进料口均位于底层分配盘的圆周边缘， 其竖向位置低于第一界面；
第一套流道系统的总进料口、第二套流道系统的总进料口、第三套流道系统的总进料口、第 四套流道系统的总进料口依次错开 90° 的方位角； 第一套流道系统的总进料口、 第三套流道系统 的总进料口的竖向位置相同， 第二套流道系统的总进料口、 第四套流道系统的总进料口的竖向位 置相同， 第一套流道系统的总进料口、 第二套流道系统的总进料口、 第五套流道系统的总进料口 的竖向位置上下错开；
除第五套流道系统外，各套流道系统的总进料口连通有两条呈镜面对称分叉布置的水平干流 , 从水平投影形状看， 该两条水平干流道呈 V字形， 两条水平干流道的末端点错开 180° 的方 ί立角， 每条水平干流道的末端点连通有一条向上竖直延伸的竖直干流道， 每条竖直干流道的上端 点位于第一界面， 每条竖直干流道的上端点连通有两条呈镜面对称分叉布置的水平分流道， 该两 条水平分流道的末端点错开 90° 的方位角； 各水平分流道形成于第一界面； 每条水平分流道的末 湍点连通有一条向上竖直延伸的竖直分流道， 竖直分流道设置于第二层分配盘， 每条竖直分流道 的上端点位于第二界面，每条竖直分流道的上端点连通有两条呈镜面对称分叉布置的水平支流道， 该两条水平支流道的末端点错开 45° 的方位角； 各水平支流道形成于第二界面； 每条水平支流道 的末端点连通有一条向上竖直延伸的竖直支流道， 竖直支流道设置于第三层分配盘， 每条竖直支 流道的上端点位于第三界面；
第一套流道系统竖直干流道的偏心距离大于第三套流道系统竖直干流道的偏心距离，第二套 流道系统竖直干流道的偏心距离大于第四套流道系统竖直干流道的偏心距离； 第一套流道系统竖 直分流道的偏心距离大于第二套流道系统竖直分流道的偏心距离， 第二套流道系统竖直分流道的 偏心距离大于第三套流道系统竖直分流道的偏心距离， 第三套流道系统竖直分流道的偏心距离大 于第四套流道系统竖直分流道的偏心距离； 第一套流道系统竖直支流道的偏心距离大于第二套流 道系统竖直支流道的偏心距离， 第二套流道系统竖直支流道的偏心距离大于第三套流道系统竖直 支流道的偏心距离， 第三套流道系统竖直支流道的偏心距离大于第四套流道系统竖直支流道的偏 心距离；
第五套流道系统的总进料口连通有一条水平总流道，水平总流道的末端连通有一条向上竖直 延伸的竖直总流道， 该竖直总流道位于底层分配盘的偏心位置， 且该竖直总流道相对于第一套流 道系统的总进料口错开 18° +45° ΧΝ的方位角， 其中 Ν为整数， 且 0 Ν 7; 第五套流道系统的 竖直总流道的上端点位于第一界面， 竖直总流道的上端点连通有两条呈镜面对称分叉布置的水平 干流道， 该两条水平干流道的末端点错开 180° 的方位角， 该两条水平干流道形成于第一界面； 每条水平干流道的末端点连通有一条向上竖直延伸的竖直干流道， 竖直干流道设置于第二层分配 盘， 每条竖直干流道的上端点位于第二界面， 每条竖直干流道的上端点连通有两条呈镜面对称分 叉布置的水平分流道， 该两条水平分流道的末端点错开 90° 的方位角； 第五套流道系统的水平分 流道形成于第二界面； 每条水平分流道的末端点连通有一条向上竖直延伸的竖直分流道， 该竖直 分流道设置于第三层分配盘， 每条竖直分流道的上端点位于第三界面；
第五套流道系统的竖直总流道的偏心距离小于第四套流道系统的竖直干流道的偏心距离，第 五套流道系统的竖直干流道的偏心距离小于第四套流道系统的竖直分流道的偏心距离； 第五套流 道系统的竖直分流道的偏心距离小于第四套流道系统的竖直支流道的偏心距离；
在第三界面上， 第五套流道系统的每条竖直分流道的上端点连通有两条呈镜面对称分叉布置 的水平整理支流道， 该两条水平整理支流道的末端点错开 45° 的方位角；
在第三界面上， 除第五套流道系统的流道外， 其余各套流道系统的各竖直支流道的上端点分 别连通有一条水平整理支流道；
五套流道系统的所有四十条水平整理支流道的末端点位于第三界面上的同一个圆上， 四十条 水平整理支流道的末端点的偏心距离均一致相等，且大于第一套流道系统竖直支流道的偏心距离； 每一套流道系统的八条水平整理支流道末端点在周向上均匀分布， 同一套流道系统的相邻两个水 平整理支流道末端点错开 45° 的方位角；
五套流道系统的水平整理支流道末端点按照第五套流道系统、 第四套流道系统、 第二套流道 系统、 第一套流道系统、 第三套流道系统的顺序依次对应错开 9° 的方位角， 其错开方向与第五 套流道系统的竖直总流道相对于第一套流道系统的总进料口错开 18° +Ν Χ 45° 的错开方向相同； 五套流道系统的每一条水平整理支流道的末端点均连通有一条径向布置的放射支流道， 所有 四十条放射支流道均设置在第四层分配盘中且位于同一个圆锥曲面上， 该圆锥曲面上大下小， 所 有四十条放射支流道呈均匀的放射状分布， 每相邻两条放射支流道错开 9° 的方位角； 同一套流 苣系统的八条放射支流道中， 各条放射支流道的径向长度相等， 且相邻两条放射支流道错开 45° 旳方位角； 不同套流道系统的放射支流道的径向长度不等， 其中与最外层螺旋流道间接连接的放 时支流道的径向长度最长， 与最内层螺旋流道间接连接的放射支流道的径向长度最短， 依此类推； 各套流道系统的每条放射支流道末端点连通有一条向上延伸的竖向整理支流道， 各条竖向整 哩支流道形成于第四层分配盘， 各条竖向整理支流道的上端点位于对应的盘筒界面；
各套流道系统的每条竖向整理支流道的上端点连通有两条呈镜面对称分叉布置的水平叉流 1, 该两条水平叉流道形成于该套流道系统对应的内套筒的盘筒界面， 该两条水平叉流道的末端 ^错开 22. 5° 的方位角；
各套流道系统的每条水平叉流道的末端点连通有两条呈镜面对称分叉布置的末级流道， 该两 条末级流道形成于该套流道系统对应的内套筒中， 该两条末级流道分别向不同的方向斜向上延伸 而形成 V字形；
各套流道系统的每一条末级流道的末端点分别与该套流道系统的其中一个螺旋流道起始点位 K对应相同， 各套流道系统的每一条末级流道直接连通对应的一条螺旋流道；
五套流道系统的螺旋流道起始点按照第五套流道系统、 第四套流道系统、 第二套流道系统、 第一套流道系统、 第三套流道系统的顺序依次对应错开 9° 的方位角， 其错开方向与第五套流道 系统的竖直总流道相对于第一套流道系统的总进料口错开 18° +N X 45° 的错开方向相同。
本申请文件中， 由于机头生产出来的膜泡具有五层结构， 因此机头具有与五层熔融物料对应 的五套流道系统， 每套流道系统又根据分流关系形成为若干级， 流道系统中构件总类繁多， 一部 分构件之间既有相似之处又有所不同， 所以分别给它们命名， 为了使各构件名称简洁明了， 命名 吋遵循了一定的规则， 具体如下： 每套流道系统都从一个总进料口经过五次一分为二的分叉， 所 以每套流道系统的流道具有六级， 上一级流道在分叉点分成为两条下一级流道， 最后演变为三十 二条末级流道。 在每套流道系统中， 第一级的流道命名为总流道或总进料口， 其数量为一条或一 个； 第二级的流道命名为干流道， 同一种结构形式的干流道总数量为两条； 第三级的流道命名为 分流道， 同一种结构形式的分流道总数量为四条； 第四级的流道命名为支流道， 同一种结构形式 的支流道总数量为八条； 第五级的流道命名为叉流道， 其数量总为十六条； 第六级的流道命名为 末级流道， 其数量总为三十二条。 在第四级中的 "水平整理支流道"， 因为它们具有将各条支流道 的末端点统一整理到一个圆上的特点， 所以命名为 "水平整理支流道"。 在第四级中的 "竖向整 理支流道"， 因为它们具有将各条支流道的上端点整理到对应的的盘筒界面的特点， 所以命名为
"竖向整理支流道"。 所谓 "盘筒界面"， 就是指第四层分配盘和同心套筒之间的界面， 所以简称
"盘筒界面"。 而 "螺旋流道"是本领域通用名称。
每一条流道都有两个端点， 即 "起始点"和 "末端点"， 每一条流道的 "起始点"和 "末端 点" 的区分是根据工作时熔融物料的流动方向进行判断的， 工作时， 熔融物料从 "起始点"流向
"末端点"。
所谓 "偏心距离"， 是指构件与机头中心轴线之间的水平距离。
所谓 "径向"， 是指机头的径向。
所谓 "周向上均匀布置"， 是指沿机头的周向上均匀布置。
所谓 "均匀的放射状分布"， 是指以机头的中心轴线为中心呈均匀的放射状分布。
"方位角"是表示该构件在机头的周向上所处的方位， 以机头的中心为基准点。
所谓 "两套流道系统的某种构件对应错开一个方位角"， 是指两套流道系统都具有某种构件， 两套流道系统的该种构件数量相同， 且其中一套流道系统的每一个构件都与另一套流道系统的对 应一个构件错开一个角度。 例如， 两套流道系统的螺旋流道起始点对应错开 9° 的方位角， 是指 该两套流道系统的螺旋流道起始点数量相同 （都是 32个）， 且其中一套流道系统的每一个螺旋流 道起始点都与另一套流道系统的对应一个螺旋流道起始点错开 9° 的方位角。
所谓两条流道"呈镜面对称分叉布置 "， 是指该两条流道是由一个分叉点（即上一级流道的 端点） 分叉开来， 且该两条流道关于一个竖向平面构成镜面对称关系， 其中， 该竖向平面通过 该分叉点和机头中心轴线。
所谓 "某一套流道系统对应的内套筒"， 是指在该套流道系统必然对应设有一层螺旋流道， 该层螺旋流道必然是位于对应内外两个同心套筒的交界面上， 其中位于外层的同心套筒就是外套 茼， 而位于内层的同心套筒就是该套流道系统对应的内套筒。
所谓螺旋流道与放射支流道 "间接连接"， 是指放射支流道必须依次通过竖向整理支流道、 平叉流道、 末级流道才连接到螺旋流道， 因此螺旋流道与放射支流道不是直接连接， 但又有间 唼连接关系， 所以称为 "间接连接"。
所谓两种构件的 "错开方向"， 是指顺时针方向或逆时针方向。 本申请文件中， 由于大部分 错开的构件具有旋转对称或镜面对称分叉布置等的关系， 所以并不必限定错开方向， 只有个别例 外。 例如， 所谓 "五套流道系统的水平整理支流道末端点按照第五套流道系统、 第四套流道系统、 第二套流道系统、 第一套流道系统、 第三套流道系统的顺序依次对应错开 9° 的方位角， 其错开 方向与第五套流道系统的总进料口相对于第一套流道系统的总进料口错开 18° +N X 45° 的错开方 向相同"， 是指： 如果第五套流道系统的总进料口相对于第一套流道系统的总进料口逆时针错开 18° +N X 45° ， 则五套流道系统的水平整理支流道末端点按照第五套流道系统的水平整理支流道 末端点、 第四套流道系统的水平整理支流道末端点、 第二套流道系统的水平整理支流道末端点、 第一套流道系统的水平整理支流道末端点、 第三套流道系统的水平整理支流道末端点的逆时针顺 序布置， 并依次对应错开 9° 的方位角； 反之， 如果第五套流道系统的总进料口相对于第一套流 道系统的总进料口顺时针错开 18° +N X 45° ， 则五套流道系统的水平整理支流道末端点按照第五 套流道系统、 第四套流道系统、 第二套流道系统、 第一套流道系统、 第三套流道系统的顺时针顺 序布置并依次对应错开 9° 的方位角。
所谓流道的 "上游"、 "下游"， 是按照工作时熔融物料流动方向进行区分的， 熔融物料从 上游流往下游。
本发明具有以下优点和效果：
一、本发明将各套流道系统的四十条放射状分流道统一整理到同一个圆锥曲面上，各套流道 系统的放射状分流道的起始点位于同一个圆上， 因此， 只需设置一层用于形成放射状分流道的分 配盘， 其它层的分配盘无需布置放射状分流道， 进而， 只有第四层分配盘的直径需要接近膜泡直 径， 其余底层分配盘、 第二层分配盘、 第三层分配盘的直径可以远小于膜泡直径， 而第四层分配 盘的厚度 （高度） 远比传统结构所有分配盘的叠加厚度小得多， 使得本发明机头的体积小， 耗用 合金钢材量少， 降低制作成本， 便于机头加工制作， 便于机头装卸、 运输； 另外， 生产塑料膜过 程需要预热时间短， 生产过程耗能小； 再者， 机头的体积小， 意味着机头密封界面面积小， 降低 密封难度。
二、本发明能将每一套流道系统的物料均匀地分配到各条螺旋流道， 流道布置结构巧妙， 层 理清晰， 五套流道系统互不干扰， 互不交叉影响， 且大部分流道位于水平界面上， 便于流道加工。
三、从流道截面面积大小的角度看， 本发明的末级流道相当于传统结构中的放射状流道； 而 本发明末级流道的长度远小于传统结构中放射状流道的长度， 这样在生产塑料膜过程中， 可以减 少熔融物料的压力损耗， 进而可以降低挤出压力， 降低对密封界面的精密度要求。
四、本发明机头中心部位没有布置物料总流道，因此可以用以布置进气通道，从另一方面讲， 这也有利于缩小机头下部的直径。
五、本发明五套流道系统的螺旋流道起始点依次对应错开，这有利于膜泡厚度在周向上均勾 分布， 即有利于薄膜产品的厚度均勾。 换言之， 由于膜泡的各点相对于螺旋流道起始点的方位角 有所不同， 因此膜泡的各点挤出厚度在周向上并不是绝对均匀， 而是存在微小偏差， 这种微小偏 差与膜泡上各点相对于螺旋流道起始点的方位角大小存在一定相关性， 属于系统性偏差， 尽管这 种系统性偏差极其微小， 但传统结构中， 各套流道系统的螺旋流道起始点没有对应错开， 因此膜 泡五层物料的这种系统性偏差会互相叠加； 而本发明五套流道系统的螺旋流道起始点对应错开， 使膜泡各层物料的这种系统性偏差互相抵消， 整个膜泡半成品的的这种系统性偏差便被削除。 附图说明
图 1是传统一种叠加式五层共挤机头的结构示意图。
图 2是传统一种同心套筒式五层共挤吹膜机头的结枸示意图。
图 3是螺旋流道的结构及物料流动方式原理示意图。
图 4是五层共挤膜泡半成品的剖面结构示意图。
图 5是传统结构中的进气通道与放射状流道的空间配合关系示意图。
图 6是本发明第一种具体实施例的结构示意图。
图 7是图 6中四层分配盘的结构示意图。
图 8是图 6中的底层分配盘的结构示意图。
图 9是图 6中的底层分配盘中各主要部件的水平投影位置关系示意图。
图 10是图 9中的一部分主要部件的水平投影位置关系示意图。
图 11是图 9中的另一部分主要部件的水平投影位置关系示意图。
图 12是图 10中 E-E剖面结构示意图。
图 13是图 11中 F-F剖面结构示意图。
图 14是第一种具体实施例的底层分配盘的俯视结构示意图。
图 15是第二层分配盘中各竖向流道的水平投影位置关系示意图。
图 16是图 15中竖直分流道 G-G剖面示意图。
图 17是图 15中的第五套流道系统竖直干流道在 H-H剖面上的结构示意图。
图 18是第一种具体实施例的第二层分配盘的俯视结构示意图。
图 19是第一种具体实施例的第三层分配盘中各竖向流道的水平投影位置关系示意图。 图 20是图 19中的各竖直支流道在 M-M剖面上的结构示意图。
图 21是图 19中的第五套流道系统竖直分流道在 N-N剖面结构示意图。
图 22是第三层分配盘的俯视结构示意图。
图 23是各套流道系统的水平整理支流道与其上游流道的水平投影位置关系示意图。
图 24是各套流道系统的水平整理支流道与其下游流道的水平投影位置关系示意图。
图 25是第四层分配盘中的放射支流道的水平投影示意图。
图 26是第五套流道系统在图 25中的 W-W剖面结构示意图。
图 27是第一套流道系统在图 25中的 R- R剖面结构示意图。
图 28是第二套流道系统在图 25中的 Q-Q剖面结构示意图。
图 29是第三套流道系统在图 25中的 P- P剖面结构示意图。
图 30是第四套流道系统在图 25中的 S-S剖面结构示意图。
图 31是第四层分配盘的俯视结构示意图。
图 32是第三套流道系统的末级流道的立体结构示意图。
图 33是各套流道系统的末级流道的的水平投影形状及位置关系示意图。
图 34是图 33中 K局部放大结构示意图。
图 35是图 6中机头上部的局部示意图。
图 36是各套流道系统的螺旋流道起始点的水平投影位置关系示意图。
图 37是实施例三的第三界面上的流道示意图。
图 38是实施例四的底层分配盘的各部件水平投影位置关系示意图。
图 39是实施例四的第三界面上的流道示意图。
图 40是本发明的 "镜面对称分叉布置 " 的含义解释示意图。
具体实施方式 实施例一
该实施例的同心套筒式五层共挤吹膜机头包括有五套流道系统，每套流道系统对应引导膜泡 济出前的的其中一层熔融物料流动； 每套流道系统包括有位于机头上部的一层螺旋流道、 位于机 头下部的一个总进料口。
图 6、 图 35、 图 36所示， 机头上部设有六个内外互套的同心套筒， 各同心套筒 69、 59、 19、 29、 49、 39依筒径大小从外到内依次套合， 各同心套筒共同的中心轴线成为机头的中心轴线 m; 每相邻两个同心套筒的交界面之间形成有一层螺旋流道， 五层螺旋流道依直径大小从外向内依次 排列， 分别为最外层螺旋流道 57、 次外层螺旋流道 17、 中间层螺旋流道 27、 次内层螺旋流道 47、 最内层螺旋流道 37。 每层螺旋流道设有三十二条螺旋流道； 每一条螺旋流道分别有一个螺旋流道 起始点， 整个机头共有一百六十个螺旋流道起始点； 其中有三十二个最外层螺旋流道起始点 58、 三十二个次外层螺旋流道起始点 18、三十二个中间层螺旋流道起始点 28、三十二个次内层螺旋流 道起始点 48、 三十二个最内层螺旋流道起始点 38。
图 6、 图 7、 图 35所示， 在机头下部设有四层分配盘， 包括底层分配盘 71、 第二层分配盘 72、 第三层分配盘 73、 第四层分配盘 74， 各层分配盘的水平投影形状呈圆环形， 底层分配盘 71、 第二层分配盘 72、 第三层分配盘 73、 第四层分配盘 74从下到上依次叠置， 所述六个内外互套的 同心套筒 69、 59、 19、 29、 49、 39设置在第四层分配盘 74的上方； 各层分配盘的中心轴线位于 机头的中心轴线 m上； 底层分配盘 71与第二层分配盘 72之间的水平交界面为第一界面 81， 第二 层分配盘与第三层分配盘之间的水平交界面为第二界面 82， 第三层分配盘与第四层分配盘之间的 水平交界面为第三界面 83; 第四层分配盘和六个同心套筒也分别形成有盘筒界面 96、 95、 91、 92、 94、 93, 各盘筒界面 96、 95、 91、 92、 94、 93的竖向位置并不位于同一水平面； 从俯视角度看， 第一界面、 第二界面、 第三界面、 各盘筒界面均为圆环形。
图 8、 图 9、 图 10、 图 11、 图 12、 图 13所示， 各套流道系统的总进料口均位于底层分配盘 71 的圆周边缘， 其竖向位置均低于第一界面 81 ; 第一套流道系统的总进料口 11、 第二套流道系 统的总进料口 21、 第三套流道系统的总进料口 31、 第四套流道系统的总进料口 41依次按逆时针 顺序错开 90° 的方位角； 第一套流道系统的总进料口 11、 第三套流道系统的总进料口 31的竖向 位置相同， 第二套流道系统的总进料口 21、 第四套流道系统的总进料口 41 的竖向位置相同， 第 一套流道系统的总进料口 11、第二套流道系统的总进料口 21、第五套流道系统的总进料口 510的 竖向位置上下错开。
图 8、 图 9、 图 10、 图 12、 图 14、 图 15、 图 16、 图 18、 图 19、 图 20所示， 第一套流道系 统的的总进料口 11连通有两条呈镜面对称分叉布置的水平干流道 121， 从水平投影形状看， 该两 条水平干流道 121呈 V字形， 两条水平干流道 121的末端点错开 180° 的方位角， 每条水平干流 道 121的末端点连通有一条向上竖直延伸的竖直干流道 122， 每条竖直干流道 122的上端点位于 第一界面， 每条竖直干流道 122的上端点连通有两条呈镜面对称分叉布置的水平分流道 131 , 该 两条水平分流道 131的末端点错开 90° 的方位角； 各水平分流道 131形成于第一界面； 每条水平 分流道的末端点连通有一条向上竖直延伸的竖直分流道 132， 竖直分流道 132设置于第二层分配 盘 72，每条竖直分流道 132的上端点位于第二界面 82;第一套流道系统共有四条竖直分流道 132, 它们依次错开 90° 的方位角， 每条竖直分流道的上端点连通有两条呈镜面对称分叉布置的水平支 流道 141， 该两条水平支流道 141的末端点错开 45° 的方位角； 各水平支流道 141形成于第二界 面 82;每条水平支流道 141的末端点连通有一条向上竖直延伸的竖直支流道 142，竖直支流道 142 设置于第三层分配盘 73， 每条竖直支流道 142的上端点位于第三界面 83; 第一套流道系统共有八 条竖直支流道 142， 它们依次错开 45° 的方位角。
图 8、 图 9、 图 10、 图 12、 图 14、 图 15、 图 16、 图 18、 图 19、 图 20所示， 第三套流道系 统的的总进料口 31连通有两条呈镜面对称分叉布置的水平干流道 321， 从水平投影形状看， 该两 条水平干流道 321呈 V字形， 两条水平干流道 321的末端点错开 180° 的方位角， 每条水平干流 1 321的末端点连通有一条向上竖直延伸的竖直干流道 322， 每条竖直干流道 322的上端点位于 第一界面 81， 每条竖直干流道 322的上端点连通有两条呈镜面对称分叉布置的水平分流道 331， 该两条水平分流道 331的末端点错开 90° 的方位角； 各水平分流道 331形成于第一界面 81 ; 每条 d平分流道 331的末端点连通有一条向上竖直延伸的竖直分流道 332， 各竖直分流道 332设置于 第二层分配盘 72， 每条竖直分流道 332的上端点位于第二界面 82; 第三套流道系统共有四条竖直 流道 332， 它们依次错开 90° 的方位角， 每条竖直分流道 332的上端点连通有两条呈镜面对称 分叉布置的水平支流道 341， 该两条水平支流道 341的末端点错开 45° 的方位角； 各水平支流道 Ml形成于第二界面 82;每条水平支流道 341的末端点连通有一条向上竖直延伸的竖直支流道 342， g直支流道 342设置于第三层分配盘 73， 每条竖直支流道 342的上端点位于第三界面 83; 第三套 流道系统共有八条竖直支流道 342， 它们依次错开 45° 的方位角。
图 8、 图 9、 图 11、 图 13、 图 14、 图 15、 图 16、 图 18、 图 19、 图 20所示， 第二套流道系 统的的总进料口 21连通有两条呈镜面对称分叉布置的水平干流道 221， 从水平投影形状看， 该两 条水平干流道 221呈 V字形， 两条水平干流道 221的末端点错开 180° 的方位角， 每条水平干流 道 221的末端点连通有一条向上竖直延伸的竖直干流道 222， 每条竖直干流道 222的上端点位于 第一界面 81， 每条竖直干流道的上端点连通有两条呈镜面对称分叉布置的水平分流道 231， 该两 条水平分流道 231的末端点错开 90° 的方位角； 各水平分流道 231形成于第一界面 81 ; 每条水平 分流道的末端点连通有一条向上竖直延伸的竖直分流道 232， 竖直分流道 232设置于第二层分配 盘 72，每条竖直分流道 232的上端点位于第二界面 82;第二套流道系统共有四条竖直分流道 232， 它们依次错开 90° 的方位角， 每条竖直分流道 232的上端点连通有两条呈镜面对称分叉布置的水 平支流道 241， 该两条水平支流道 241的末端点错开 45° 的方位角； 各水平支流道 241形成于第 二界面 82; 每条水平支流道 241的末端点连通有一条向上竖直延伸的竖直支流道 242， 竖直支流 道 242设置于第三层分配盘 73， 每条竖直支流道 242的上端点位于第三界面 83; 第二套流道系统 共有八条竖直支流道 242， 它们依次错开 45° 的方位角。
图 8、 图 9、 图 11、 图 13、 图 14、 图 15、 图 16、 图 18、 图 19、 图 20所示， 第四套流道系 统的的总进料口 41连通有两条呈镜面对称分叉布置的水平干流道 421， 从水平投影形状看， 该两 条水平干流道 421呈 V字形， 两条水平干流道 421的末端点错开 180° 的方位角， 每条水平干流 道 421的末端点连通有一条向上竖直延伸的竖直干流道 422， 每条竖直干流道 422的上端点位于 第一界面 81 , 每条竖直干流道 422的上端点连通有两条呈镜面对称分叉布置的水平分流道 431， 该两条水平分流道 431的末端点错开 90° 的方位角， 各水平分流道 431形成于第一界面 81 ; 每条 水平分流道 431的末端点连通有一条向上竖直延伸的竖直分流道 432， 竖直分流道 432设置于第 二层分配盘 72， 每条竖直分流道 432的上端点位于第二界面 82; 第四套流道系统共有四条竖直分 流道 432， 它们依次错开 90° 的方位角， 每条竖直分流道 432的上端点连通有两条呈镜面对称分 叉布置的水平支流道 441，该两条水平支流道 441的末端点错开 45° 的方位角；各水平支流道 441 形成于第二界面 82; 每条水平支流道 441的末端点连通有一条向上竖直延伸的竖直支流道 442， 竖直支流道 442设置于第三层分配盘 73， 每条竖直支流道 442的上端点位于第三界面 83， 第四套 流道系统共有八条竖直支流道 442， 它们依次错开 45° 的方位角。
图 11-20所示， 第一套流道系统竖直干流道 122的偏心距离大于第三套流道系统竖直干流 道 322的偏心距离， 第二套流道系统竖直干流道 222的偏心距离大于第四套流道系统竖直干流道 422的偏心距离；第一套流道系统竖直分流道 132的偏心距离大于第二套流道系统竖直分流道 232 的偏心距离， 第二套流道系统竖直分流道 232的偏心距离大于第三套流道系统竖直分流道 332的 偏心距离， 第三套流道系统竖直分流道 332的偏心距离大于第四套流道系统竖直分流道 432的偏 心距离； 第一套流道系统竖直支流道 142的偏心距离大于第二套流道系统竖直支流道 242的偏心 距离， 第二套流道系统竖直支流道 242的偏心距离大于第三套流道系统竖直支流道 342的偏心距 离，第三套流道系统竖直支流道 342的偏心距离大于第四套流道系统竖直支流道 442的偏心距离。 图 8、 图 9、 图 10、 图 14、 图 15、 图 17、 图 18、 图 19、 图 21所示， 第五套流道系统的总 S料口 510连通有一条水平总流道 511， 水平总流道 511的末端连通有一条向上竖直延伸的竖直 、流道 512， 该竖直总流道 512位于底层分配盘 71的偏心位置， 且该竖直总流道 512相对于第一 流道系统的总进料口 11逆时针错开 63° 的方位角； 第五套流道系统的竖直总流道 512的上端 位于第一界面 81，竖直总流道 512的上端点连通有两条呈镜面对称分叉布置的水平干流道 521， 该两条水平干流道 521的末端点错开 180° 的方位角，该两条水平干流道 521形成于第一界面 81 ; 每条水平干流道 521的末端点连通有一条向上竖直延伸的竖直干流道 522， 该竖直干流道 522设 g于第二层分配盘 72， 每条竖直干流道 522的上端点位于第二界面 82; 每条竖直干流道 522的上 湍点连通有两条呈镜面对称分叉布置的水平分流道 531， 该两条水平分流道 531的末端点错开 90 3 的方位角， 各水平分流道 531形成于第二界面 82; 每条水平分流道 531的末端点连通有一条向 七竖直延伸的竖直分流道 532， 竖直分流道 532设置于第三层分配盘 73, 每条竖直分流道 532的 _t端点位于第三界面 83;第五套流道系统共有四条竖直分流道 532，它们依次错开 90° 的方位角。
图 11-20所示， 第五套流道系统的竖直总流道 512的偏心距离小于第四套流道系统的竖直 f流道 422的偏心距离， 第五套流道系统的竖直干流道 522的偏心距离小于第四套流道系统的竖 直分流道 432的偏心距离； 第五套流道系统的竖直分流道 532的偏心距离小于第四套流道系统的 g直支流道 442的偏心距离。
图 22所示，在第三界面 83上，第五套流道系统的每条竖直分流道 532的上端点连通有两条 ¾镜面对称分叉布置的水平整理支流道 543， 该两条水平整理支流道 543的末端点错开 45° 的方 角， 该两条水平整理支流道 543连成 U字形； 第五套流道系统共有八条水平整理支流道 543; 图 22、 图 23所示， 在第三界面 83上， 除第五套流道系统的流道外， 其余各套流道系统的 竖直支流道的上端点分别连通有一条水平整理支流道，即第一套流道系统的八条竖直支流道 142 的上端点分别连通有一条水平整理支流道 143， 第二套流道系统的八条竖直支流道 242的上端点 分别连通有一条水平整理支流道 243， 第三套流道系统的八条竖直支流道 342的上端点分别连通 ^一条水平整理支流道 343， 第四套流道系统的八条竖直支流道 442 的上端点分别连通有一条水 ^整理支流道 443;
图 22所示， 五套流道系统的所有四十条水平整理支流道的末端点 （图 22中各小黑点所示） 位于第三界面 83上的同一个圆上， 四十条水平整理支流道的末端点的偏心距离均一致相等， 且大 f第一套流道系统竖直支流道 142的偏心距离； 每一套流道系统的八条水平整理支流道末端点在 阇向上均匀分布， 同一套流道系统的相邻两个水平整理支流道末端点错开 45° 的方位角；
图 22所示，五套流道系统的水平整理支流道末端点按照第五套流道系统、第四套流道系统、 第二套流道系统、 第一套流道系统、 第三套流道系统的逆时针顺序依次对应错开 9° 的方位角， I : 第四套流道系统的水平整理支流道末端点相对于第五套流道系统的水平整理支流道末端点对 逆时针错开 9° 的方位角， 第二套流道系统的水平整理支流道末端点相对于第四套流道系统的 水平整理支流道末端点对应逆时针错开 9° 的方位角， 第一套流道系统的水平整理支流道末端点 相对于第二套流道系统的水平整理支流道末端点对应逆时针错开 9° 的方位角， 第三套流道系统 的水平整理支流道末端点相对于第一套流道系统的水平整理支流道末端点对应逆时针错开 9° 的 方位角。 这样， 图 22中四十个小黑点依次错开 9° 的方位角。
图 24、 图 25所示， 五套流道系统的每一条水平整理支流道的末端点均连通有一条径向布置 的放射支流道， 不同套流道系统的放射支流道的径向长度不等， 并按照第五套流道系统、 第一套 流道系统、 第二套流道系统、 第四套流道系统、 第三套流道系统的顺序依次递减； 其中， 第五套 流道系统的放射支流道 544长度最长， 第一套流道系统的放射支流道 144长度位居第二， 第二套 流道系统的放射支流道 244长度位居第三， 第四套流道系统的放射支流道 444长度位居第四， 第 三套流道系统的放射支流道 344长度位居第五 （最短)。 其中， 第五套流道系统的放射支流道 544 与最外层螺旋流道 57间接连接， 第一套流道系统的放射支流道 144与次外层螺旋流道 17间接连 g， 第二套流道系统的放射支流道 244与中间层螺旋流道 27间接连接， 第四套流道系统的放射支 巟道 444与次内层螺旋流道 47间接连接， 第三套流道系统的放射支流道 344与最内层螺旋流道 Π间接连接。
图 25、 图 26、 图 27、 图 28、 图 29、 图 30所示， 所有四十条放射支流道 544、 144、 244、 144、 344均设置在第四层分配盘 74中， 且所有四十条放射支流道位于同一个圆锥曲面上， 该圆 锥曲面上大下小， 这意味着， 所有四十条放射支流道的起始点位于同一个水平面 （第三界面 83 ) 上且位于同一个圆， 所有四十条放射支流道与该水平面 （第三界面 83) 之间构成的倾斜角大小相 同， 所有四十条放射支流道的延长线通过机头中心轴线上的同一个点。 从水平投影位置看， 所有 四十条放射支流道呈均匀的放射状分布， 每相邻两条放射支流道错开 9° 的方位角。 同一套流道 系统的八条放射支流道中， 各条放射支流道的径向长度相等， 且相邻两条放射支流道错开 45° 的 方位角。
图 26、 图 27、 图 28、 图 29、 图 30所示， 各套流道系统的每条放射支流道末端点连通有一 条向上延伸的竖向整理支流道， 各条竖向整理支流道形成于第四层分配盘， 各条竖向整理支流道 的上端点位于对应的盘筒界面； 每一套流道系统总共有八条竖向整理支流道； 其中， 第五套流道 系统的竖向整理支流道 545的上端点位于对应对应内套筒 59的盘筒界面 95， 如图 6、 图 26所示； 第一套流道系统的竖向整理支流道 145的上端点位于对应内套筒 19的盘筒界面 91， 如图 6、 图 11所示； 第二套流道系统的竖向整理支流道 245的上端点位于对应内套筒 29的盘筒界面 92， 如 图 6、 图 28所示； 第四套流道系统的竖向整理支流道 445的上端点位于对应内套筒 49的盘筒界 面 94， 如图 6、 图 29所示； 第三套流道系统的竖向整理支流道 345的上端点位于对应的盘筒界面 33, 如图 6、 30图所示。
图 24、 图 31、 图 6、 图 7、 图 35所示， 每一套流道系统的每条竖向整理支流道的上端点连 通有两条呈镜面对称分叉布置的水平叉流道， 该两条水平叉流道的末端点错开 22. 5° 的方位角。 每一套流道系统共有十六条水平叉流道， 同一套流道系统的各水平叉流道的末端点（如图 31中小 黑点所示）在周向上均匀错开， 依次错开 22. 5° 的方位角。 其中， 第一套流道系统的水平叉流道 15形成于该套流道系统对应的内套筒 19的盘筒界面 91，第二套流道系统的水平叉流道 25形成于 该套流道系统对应的内套筒 29的盘筒界面 92， 第三套流道系统的水平叉流道 35形成于该套流道 系统对应的内套筒 39的盘筒界面 93， 第四套流道系统的水平叉流道 45形成于该套流道系统对应 的内套筒 49的盘筒界面 94， 第五套流道系统的水平叉流道 55形成于该套流道系统对应的内套筒 59的盘筒界面 95。
图 32、 图 33、 图 34、 图 35所示， 第三套流道系统的每条水平叉流道的末端点 350连通有 两条呈镜面对称分叉布置的末级流道 36， 该两条末级流道 36形成于该套流道系统对应的内套筒 39中， 该两条末级流道 36分别向不同的方向斜向上延伸而形成 V字形， 如图 32所示； 第三套流 道系统共有三十二条末级流道 36。 第三套流道系统的每一条末级流道 36的末端点分别与该套流 道系统的其中一个螺旋流道起始点 38位置对应相同， 第三套流道系统的每一条末级流道 36直接 连通对应的一条螺旋流道 37 (最内层螺旋流道)；
图 33、 图 34、 图 35所示， 第一套流道系统的每条水平叉流道的末端点 150连通有两条呈镜 面对称分叉布置的末级流道 16， 该两条末级流道 16形成于该套流道系统对应的内套筒 19中， 该 两条末级流道 16分别向不同的方向斜向上延伸而形成 V字形（其形状与图 32所示结构类似)， 第 一套流道系统共有三十二条末级流道 16。 第一套流道系统的每一条末级流道 16的末端点分别与 该套流道系统的其中一个螺旋流道起始点 18位置对应相同， 第一套流道系统的每一条末级流道 16直接连通对应的一条螺旋流道 17 (次外层螺旋流道)；
图 33、 图 34、 图 35所示， 第二套流道系统的每条水平叉流道的末端点 250连通有两条呈镜 面对称分叉布置的末级流道 26， 该两条末级流道 26形成于该套流道系统对应的内套筒 29中， 该 两条末级流道 26分别向不同的方向斜向上延伸而形成 V字形（其形状与图 32所示结构类似）， 第 二套流道系统共有三十二条末级流道 26。 第二套流道系统的每一条末级流道 26的末端点分别与 该套流道系统的其中一个螺旋流道起始点 28位置对应相同， 第二套流道系统的每一条末级流道 ½直接连通对应的一条螺旋流道 27 (中间层螺旋流道）；
图 33、 图 34、 图 35所示， 第四套流道系统的每条水平叉流道的末端点 450连通有两条呈镜 S对称分叉布置的末级流道 46， 该两条末级流道 46形成于该套流道系统对应的内套筒 49中， 该 两条末级流道 46分别向不同的方向斜向上延伸而形成 V字形（其形状与图 32所示结构类似)， 第 a套流道系统共有三十二条末级流道 46， 第四套流道系统的每一条末级流道 46的末端点分别与 该套流道系统的其中一个螺旋流道起始点 48 位置对应相同， 第四套流道系统的每一条末级流道 直接连通对应的一条螺旋流道 47 (次内层螺旋流道)；
图 33、 图 34、 图 35所示， 第五套流道系统的每条水平叉流道的末端点 550连通有两条呈镜 面对称分叉布置的末级流道 56， 该两条末级流道 56形成于该套流道系统对应的内套筒 59中， 该 两条末级流道 56分别向不同的方向斜向上延伸而形成 V字形 （其结构与图 32所示结构类似)， 第五套流道系统共有三十二条末级流道 56， 第五套流道系统的每一条末级流道 56的末端点分别 与该套流道系统的其中一个螺旋流道起始点 58位置对应相同，第五套流道系统的每一条末级流道 56直接连通对应的一条螺旋流道 57 (最外层螺旋流道)；
图 36所示， 五套流道系统的螺旋流道起始点按照第五套流道系统、 第四套流道系统、 第二 套流道系统、 第一套流道系统、 第三套流道系统的逆时针顺序依次对应错开 9° 的方位角， 具体 地说，
第三套流道系统的螺旋流道起始点 38相对于第一套流道系统的螺旋流道起始点 18对应逆时 计错开 9° 的方位角， 如图 36中 Z4所示；
第一套流道系统的螺旋流道起始点 18相对于第二套流道系统的螺旋流道起始点 28对应逆时 计错开 9° 的方位角， 如图 36中 3所示；
第二套流道系统的螺旋流道起始点 28相对于第四套流道系统的螺旋流道起始点 48对应逆时 针错开 9° 的方位角， 如图 36中 所示；
第四套流道系统的螺旋流道起始点 48相对于第五套流道系统的螺旋流道起始点 58对应逆时 针错开 9° 的方位角， 如图 36中 Z 1所示。
图 35、 图 36所示， 第五套流道系统的螺旋流道起始点 58即最外层螺旋流道 57的起始点， 第一套流道系统的螺旋流道起始点 18即次外层螺旋流道 17的起始点， 第二套流道系统的螺旋流 道起始点 28即中间层螺旋流道 27的起始点，第四套流道系统的螺旋流道起始点 48即次内层螺旋 流道 47的起始点， 第三套流道系统的螺旋流道起始点 38即最内层螺旋流道 37的起始点。每一套 流道系统的三十二个螺旋流道起始点在周向上均勾布置， 依次错开 11. 25° 的方位角。
图 6所示，在各物料流道不占用机头中央位置，所以在机头中央位置还可以设有圆形的进气 通道 10。
实施例二
在实施例二中， 第五套流道系统的竖直总流道 512相对于第一套流道系统的总进料口 11错 开 153° 的方位角， 错开的方向为逆时针。
这样， 与实施例一比较， 实施例二的第一套流道系统、第二套流道系统、第四套流道系统的 结构与实施例一完全对应相同， 而实施例二的第五套流道系统相对于实施例一的第五套流道系统 逆时针错开了 90° 。
实际上， 实施例二的第五套流道系统从水平整理支流道 543开始， 其下游的流道（包括水平 整理支流道 543 ) 关于机头的中心旋转 90° 对称相同， 因此， 实施例二的第五套流道系统从水平 整理支流道 543开始， 其下游的流道与实施例一对应相同。
在实施例二中， 第五套流道系统的竖直总流道 512相对于第一套流道系统的总进料口 11逆 时针错开角度也可改为 18° +45° X 5, 或者 18° +45° X 7。 实施例三
在实施例三中， 第五套流道系统的竖直总流道 512相对于第一套流道系统的总进料口 11错 汗 18° 的方位角， 错开的方向为逆时针；
这样， 与实施例一比较， 实施例三的第一套流道系统、第二套流道系统、第四套流道系统的 ¾构与与实施例一完全对应相同， 而实施例三的第五套流道系统相对于实施例一的第五套流道系 究顺时针错开了 45° ， 其第三界面上流道分布如图 37所示。
实际上， 实施例三的第五套流道系统从放射支流道 544开始， 其下游的流道（包括放射支流 直 544)关于机头的中心旋转 45° 对称相同， 因此， 实施例三的第五套流道系统从放射支流道 544 汗始， 其下游的流道与实施例一对应相同。
同样，在实施例三中，第五套流道系统的竖直总流道 512相对于第一套流道系统的总进料口 U逆时针错开角度也可改为 18° +45° X 2, 或者 18° +45° X 4， 或者 18° +45° X 6。
实施例四
在实施例四中， 第五套流道系统的竖直总流道 512相对于第一套流道系统的总进料口 11错 幵 63° 的方位角， 错开的方向为顺时针；
与实施例一比较，在各套流道系统的竖直支流道上游的结构中，实施例四的第一套流道系统、 第二套流道系统、 第四套流道系统的结构与与实施例一完全对应相同， 而实施例四的第五套流道 系统相对于实施例一的第五套流道系统顺时针错开了 126° ， 其底层分配盘各主要部件的水平投 影位置如图 38所示。
在实施例四中，五套流道系统的水平整理支流道末端点按照第五套流道系统、第四套流道系 统、 第二套流道系统、 第一套流道系统、 第三套流道系统的顺时针顺序依次对应错开 9° 的方位 角， 如图 39所示；
在水平整理支流道下游的流道中，五套流道系统将一一对应地分别延伸连通到最外层螺旋流 道 57、 次外层螺旋流道 17、 中间层螺旋流道 27、 次内层螺旋流道 47、 最内层螺旋流道 37。 由于 从水平整理支流道末端点开始， 五套流道系统己经开始完全旋转对称， 所以， 五套流道系统与五 层螺旋流道的配对关系可以任意一一配对组合， 例如， 最外层螺旋流道与第一套流道系统的放射 状支流道间接连接， 同时， 次外层螺旋流道与第二套流道系统的放射状支流道间接连接， 中间层 螺旋流道与第三套流道系统的放射状支流道间接连接， 次内层螺旋流道与第四套流道系统的放射 状支流道间接连接， 最内层螺旋流道与第五套流道系统的放射状支流道间接连接。
同样，在实施例四中，第五套流道系统的竖直总流道 512相对于第一套流道系统的总进料口 11顺时针错开角度也可改为 18° +45° X 2, 或者 18° +45° X 3, 或者 18° +45° X 6, 等等。
图 40所示， 本发明中， 所谓两条流道 "呈镜面对称分叉布置 "， 是指该两条流道 101、 102 是由一个分叉点 Z分叉开来， 且该两条流道 101、 102关于一个竖向平面 n构成镜面对称关系， 其 中， 该竖向平面 n通过该分叉点 Z和机头的中心轴线， 在图 40中机头的中心轴线由点 0表示。

Claims

权 利 要 求
1. 一种同心套筒式五层共挤吹膜机头， 包括有五套流道系统， 每套流道系统对应引导一层 熔融物料流动； 每套流道系统包括有位于机头上部的一层螺旋流道、 位于机头下部的一个 总进料口； 其中， 机头上部设有六个内外互套的同心套筒， 各同心套筒依筒径大小从外到 内依次套合， 各同心套筒共同的中心轴线成为机头的中心轴线； 每相邻两个同心套筒的交 界面之间形成有一层所述的螺旋流道， 五层螺旋流道依直径大小从外到内依次排列， 每层 螺旋流道设有三十二条螺旋流道； 每一条螺旋流道分别有一个螺旋流道起始点， 整个机头 共有一百六十个螺旋流道起始点； 同一层螺旋流道的三十二个螺旋流道起始点在周向上均 勾布置， 依次错开 11. 25° 的方位角；
其特征在于： 在机头下部设有四层分配盘， 包括底层分配盘、 第二层分配盘、 第三层 分配盘、 第四层分配盘， 各层分配盘的水平投影形状呈圆环形， 各层分配盘从下到上依次 叠置， 所述六个内外互套的同心套筒设置在第四层分配盘的上方； 各层分配盘的中心轴线 位于机头的中心轴线上； 底层分配盘与第二层分配盘之间的水平交界面为第一界面， 第二 层分配盘与第三层分配盘之间的水平交界面为第二界面， 第三层分配盘与第四层分配盘之 间的水平交界面为第三界面； 第四层分配盘和六个同心套筒也分别形成有盘筒界面；
各套流道系统的总进料口均位于底层分配盘的圆周边缘， 其竖向位置低于第一界面； 第一套流道系统的总进料口、 第二套流道系统的总进料口、 第三套流道系统的总进料 口、第四套流道系统的总进料口依次错开 90° 的方位角； 第一套流道系统的总进料口、 第 三套流道系统的总进料口的竖向位置相同， 第二套流道系统的总进料口、 第四套流道系统 的总进料口的竖向位置相同， 第一套流道系统的总进料口、 第二套流道系统的总进料口、 第五套流道系统的总进料口的竖向位置上下错开；
除第五套流道系统外， 各套流道系统的总进料口连通有两条呈镜面对称分叉布置的水 平干流道， 从水平投影形状看， 该两条水平干流道呈 V字形， 两条水平干流道的末端点错 开 180° 的方位角， 每条水平干流道的末端点连通有一条向上竖直延伸的竖直干流道， 每 条竖直干流道的上端点位于第一界面， 每条竖直干流道的上端点连通有两条呈镜面对称分 叉布置的水平分流道， 该两条水平分流道的末端点错开 90° 的方位角； 各水平分流道形成 于第一界面； 每条水平分流道的末端点连通有一条向上竖直延伸的竖直分流道， 竖直分流 道设置于第二层分配盘， 每条竖直分流道的上端点位于第二界面， 每条竖直分流道的上端 点连通有两条呈镜面对称分叉布置的水平支流道，该两条水平支流道的末端点错开 45° 的 方位角； 各水平支流道形成于第二界面； 每条水平支流道的末端点连通有一条向上竖直延 伸的竖直支流道， 竖直支流道设置于第三层分配盘， 每条竖直支流道的上端点位于第三界 面；
第一套流道系统竖直干流道的偏心距离大于第三套流道系统竖直干流道的偏心距离， 第二套流道系统竖直干流道的偏心距离大于第四套流道系统竖直干流道的偏心距离； 第一 套流道系统竖直分流道的偏心距离大于第二套流道系统竖直分流道的偏心距离， 第二套流 道系统竖直分流道的偏心距离大于第三套流道系统竖直分流道的偏心距离， 第三套流道系 统竖直分流道的偏心距离大于第四套流道系统竖直分流道的偏心距离； 第一套流道系统竖 直支流道的偏心距离大于第二套流道系统竖直支流道的偏心距离， 第二套流道系统竖直支 流道的偏心距离大于第三套流道系统竖直支流道的偏心距离， 第三套流道系统竖直支流道 的偏心距离大于第四套流道系统竖直支流道的偏心距离；
第五套流道系统的总进料口连通有一条水平总流道， 水平总流道的末端连通有一条向 上竖直延伸的竖直总流道， 该竖直总流道位于底层分配盘的偏心位置， 且该竖直总流道相 对于第一套流道系统的总进料口错开 18° +45° X N的方位角，其中 N为整数，且 0 N 7; 第五套流道系统的竖直总流道的上端点位于第一界面， 竖直总流道的上端点连通有两条呈 镜面对称分叉布置的水平干流道， 该两条水平干流道的末端点错开 180° 的方位角， 该两 条水平干流道形成于第一界面； 每条水平干流道的末端点连通有一条向上竖直延伸的竖直 干流道， 竖直干流道设置于第二层分配盘， 每条竖直干流道的上端点位于第二界面， 每条 竖直干流道的上端点连通有两条呈镜面对称分叉布置的水平分流道， 该两条水平分流道的 末端点错开 90° 的方位角； 第五套流道系统的水平分流道形成于第二界面； 每条水平分流 道的末端点连通有一条向上竖直延伸的竖直分流道， 该竖直分流道设置于第三层分配盘， 每条竖直分流道的上端点位于第三界面；
第五套流道系统的竖直总流道的偏心距离小于第四套流道系统的竖直干流道的偏心距 离， 第五套流道系统的竖直干流道的偏心距离小于第四套流道系统的竖直分流道的偏心距 离； 第五套流道系统的竖直分流道的偏心距离小于第四套流道系统的竖直支流道的偏心距 离；
在第三界面上， 第五套流道系统的每条竖直分流道的上端点连通有两条呈镜面对称分 叉布置的水平整理支流道， 该两条水平整理支流道的末端点错开 45° 的方位角；
在第三界面上， 除第五套流道系统的流道外， 其余各套流道系统的各竖直支流道的上 端点分别连通有一条水平整理支流道；
五套流道系统的所有四十条水平整理支流道的末端点位于第三界面上的同一个圆上， 四十条水平整理支流道的末端点的偏心距离均一致相等， 且大于第一套流道系统竖直支流 道的偏心距离； 每一套流道系统的八条水平整理支流道末端点在周向上均勾分布， 同一 套流道系统的相邻两个水平整理支流道末端点错开 45° 的方位角；
五套流道系统的水平整理支流道末端点按照第五套流道系统、 第四套流道系统、 第二 套流道系统、 第一套流道系统、 第三套流道系统的顺序依次对应错开 9° 的方位角， 其错 开方向与第五套流道系统的竖直总流道相对于第一套流道系统的总进料口错开 18° +N X 45° 的错开方向相同；
五套流道系统的每一条水平整理支流道的末端点均连通有一条径向布置的放射支流 道， 所有四十条放射支流道均设置在第四层分配盘中且位于同一个圆锥曲面上， 该圆锥曲 面上大下小， 所有四十条放射支流道呈均匀的放射状分布， 每相邻两条放射支流道错开 9 ° 的方位角； 同一套流道系统的八条放射支流道中， 各条放射支流道的径向长度相等， 且 相邻两条放射支流道错开 45° 的方位角； 不同套流道系统的放射支流道的径向长度不等， 其中与最外层螺旋流道间接连接的放射支流道的径向长度最长， 与最内层螺旋流道间接连 接的放射支流道的径向长度最短， 依此类推；
各套流道系统的每条放射支流道末端点连通有一条向上延伸的竖向整理支流道， 各条 竖向整理支流道形成于第四层分配盘， 各条竖向整理支流道的上端点位于对应的盘筒界 面；
各套流道系统的每条竖向整理支流道的上端点连通有两条呈镜面对称分叉布置的水平 叉流道， 该两条水平叉流道形成于该套流道系统对应的内套筒的盘筒界面， 该两条水平叉 流道的末端点错开 22. 5° 的方位角；
各套流道系统的每条水平叉流道的末端点连通有两条呈镜面对称分叉布置的末级流 道， 该两条末级流道形成于该套流道系统对应的内套筒中， 该两条末级流道分别向不同的 方向斜向上延伸而形成 V字形；
各套流道系统的每一条末级流道的末端点分别与该套流道系统的其中一个螺旋流道起 始点位置对应相同， 各套流道系统的每一条末级流道直接连通对应的一条螺旋流道； 五套流道系统的螺旋流道起始点按照第五套流道系统、第四套流道系统、第二套流道系 统、 第一套流道系统、 第三套流道系统的顺序依次对应错开 9° 的方位角， 其错开方向与 第五套流道系统的竖直总流道相对于第一套流道系统的总进料口错开 18° +NX45° 的错 开方向相同。
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