CN201195396Y - Multi-blank multi-layer co-extrusion-blow molding machine - Google Patents

Abstract

A multi-parison and multi-layer co-extrusion blow molding machine comprises a plasticizing system, a die head extruding system and a blow molding system. The die head extruding system comprises more than one die head, each die head is equipped with a feed opening connected with a screw rod, the die head comprises a die head body connected with a neck ring mold, the neck ring mold is equipped with a core mold, and the core mold and the neck ring mold form an extrusion opening. The multi-parison and multi-layer co-extrusion blow molding machine is characterized in that a deflector A and a deflector C, wherein the deflector A is equipped with a step, the small head below the step is inserted in a central hole C of the deflector C, the small head is equipped with a guiding groove A and a vertical channel B, the large head is equipped with a channel A, a deflector B is disposed in the deflector A, the deflector A is provided with a guiding groove B and a vertical channel B, and the guiding groove B is communicated with feed opening A, further, the deflector C is equipped with a horizontal channel C, a guiding groove C and a vertical channel C, wherein the horizontal channel C is communicated with the guiding groove A and a feed opening B, the guiding groove C is communicated with a feed opening C, additionally, the vertical channel A, the vertical channel B and the vertical channel C are converged at the outer wall of the core mode and then to be communicated with the extruding opening.

Description

Multi-blank multi-layer co-extruding blow moulding machine

Technical field

The utility model relates to the plastic hollow vessel extrusion blow molding machine, particularly relates to multi-blank multi-layer co-extruding blow moulding machine, belongs to the plastics machinery field.

Background technology

Extrusion blow hollow plastic make-up machine is the capital equipment of hollow container (as mineral water bottle, beverage bottle, medicine bottle, bottle for cosmetics etc.) moulding, comprises plasticizing system, die head extrusion system and blow-molding system, and described plasticizing system comprises barrel, the barrel connecting screw rod; Described die head extrusion system comprises more than one die head, each die head is shaped on charging aperture and connects screw rod more than one respectively, and die head comprises die body, die body lower end connector mould, mouth mould central authorities are provided with core, and the gap between core and mouthful mould forms the extrusion of annular; Described blow-molding system comprises inflatable body and clasp mould mechanism; clasp mould mechanism comprises front template, middle template and the rear pattern plate that is linked to each other by guide rod; between front template and the middle template mould is housed; between middle template and the rear pattern plate lazy-tongs are housed; middle template is driven by die cylinder; it extrudes bottle base by die head earlier, bottle base is put in the mould, by the inflatable body blow molding again.But existing extrusion blow molding machine exists following defective: first, for intensity, chemical-resistance and the anti-gas barrier properties that increase goods, usually adopt two-layer or three layers of different plastic material are made, promptly adopt two or three screw rods to extrude different melting plastics respectively, two kinds or three kinds of melting plastics enter in the die head, the extrusion modling of one deck cover one deck, but existing three layers of extrusion blow molding machine are the single mode heads, once can only extrude one, operating efficiency is low; The second, existing extrusion blow molding machine is single station, promptly has only a blow-molding system, and its production efficiency is low; The 3rd, because extrusion blow molding machine is the one step processing machine, when expecting that group is after die head is extruded, directly put into mould, its temperature is very high, behind the inflatable body blow molding, occur a large amount of overlaps easily, prior art is passed through artificial deburring usually, guarantees Products Quality and outward appearance, but workload is big, the labour intensity height, particularly concerning the extruding and blowing machine of multistation (corresponding a plurality of clasp mould mechanisms), a station just needs deburring personnel, the consumption manpower is many, the cost of labor height; The 4th, because extrusion shaping machine is successively work, the material group that the frequent contact of blow needle in the inflatable body has just been extruded causes blow needle and air blowing core to be in all the time under the condition of high temperature, and service behaviour is affected, thereby directly quality is blown in influence.

Summary of the invention

The purpose of this utility model is in order to overcome the shortcoming that prior art exists, a kind of product strength height that molds to be provided, and layers of material is evenly distributed, and operates steadily the production efficiency height; And can automatic trimming, thus labour intensity reduced, cost of labor is economized, and otch is neat, attractive in appearance; In continuous operation, can make the air blowing core be in normal working temperature all the time, thereby guarantee to blow the multi-blank multi-layer co-extruding blow moulding machine of quality.

The technical scheme of the utility model multi-blank multi-layer co-extruding blow moulding machine is: comprise plasticizing system, die head extrusion system and blow-molding system, described plasticizing system comprises screw rod in hopper, barrel and the barrel and the electric heater unit on the barrel; Described die head extrusion system comprises more than one die head, each die head is shaped on charging aperture connecting screw rod respectively, and die head comprises die body, die body lower end connector mould, mouth mould central authorities are provided with core, and the gap between core and mouthful mould forms the extrusion of annular; Described blow-molding system is two, each system comprises inflatable body and clasp mould mechanism respectively, clasp mould mechanism comprises the front template that is linked to each other by guide rod, middle template and rear pattern plate, between front template and the middle template mould is housed, between middle template and the rear pattern plate lazy-tongs are housed, middle template is driven by die cylinder, it is characterized in that installing in the described die body baffle first and baffle third, the baffle first is shaped on step, microcephaly below the step is inserted in the mesopore third of baffle third, microcephaly's outer wall is shaped on guiding gutter first and the vertical runner first that communicates, major part is shaped on the transverse flow channels first, in the mesopore first of baffle first baffle second is housed, baffle second outer wall is shaped on guiding gutter second and the vertical runner second that communicates, and the upper end of guiding gutter second communicates with the charging armatine through the transverse flow channels first; Baffle third top is shaped on transverse flow channels the third, and transverse flow channels third is communicated with guiding gutter first and charging aperture second, and the baffle third bottom outer wall is shaped on guiding gutter third and the vertical runner the third that communicates, and the upper end of guiding gutter third is communicated with charging aperture third; Vertical runner first, vertical runner second and vertical runner third converge the connection extrusion at the core outer wall.

Multi-blank multi-layer co-extruding blow moulding machine of the present utility model, three baffle first are arranged, second, third, the baffle first, second, the third inside and outside intussusception, each baffle is shaped on guiding gutter and vertical runner, form three creeping passages, be internal layer creeping passage (its path is: the charging armatine---transverse flow channels first---guiding gutter second---vertical runner second), middle level creeping passage (its path is: charging aperture second---transverse flow channels third---and the guiding gutter first---vertical runner first) and outer creeping passage (its path is: charging aperture third---guiding gutter third---vertically runner third), outer creeping converges in vertical runner first outlet with the middle level creeping earlier, converge with the internal layer creeping to vertical runner second outlet again, extrude from extrusion together after converging for three layers, layers of material is evenly distributed, and after layers of material adopts different plastic materials, meet the different needs, adopt polypropylene to mix as internal layer and middle level with the elastomeric material of different proportion, make internal layer nontoxic, inertia, has good heat sealability and elasticity, skin is higher polyester of mechanical strength or polypropylene material, and surface text printout after treatment is comparatively clear; Perhaps internal layer adopts the composite material of polypropylene and styrene one ethene one butylene one styrol copolymer, and styrene is adopted in the middle level, has more increased the permeability resistance and the elasticity of film material, the outer polypropylene material or the like that adopts.

Multi-blank multi-layer co-extruding blow moulding machine of the present utility model, its described charging armatine, second, third connect three screw rods through runner compoboard first, second, third respectively, runner compoboard first, second, third comprises main flow guidance tape and secondary flow guidance tape respectively, the main flow guidance tape is shaped on sprue, sprue is communicated with screw rod, the secondary flow guidance tape is shaped on runner, and runner is communicated with sprue and charging aperture, and the quantity of runner is consistent with the quantity of die head.After three kinds of creepings that come out from three screw rods are shunted by runner compoboard first, second, third, be transported in the baffle of each die head, thereby extrude the compound goods of interior, domestic and abroad three-layer plastic at the extrusion of each die head.Its described secondary flow guidance tape comprises more than one or two or two, sub-runner on lower floor's secondary flow guidance tape communicates with father's runner of upper strata secondary flow guidance tape, can tell two runners from sprue, runner two minutes four again, four minutes eight etc., can realize that the multimode head works simultaneously, increase work efficiency greatly.Its described die head is fixed on the frame top, and the left and right sides of die head is installed left and right inflatable body respectively side by side, and the mould corresponding with left and right inflatable body, template and clasp mould mechanism are driven by left and right whole moving mechanism respectively and do whole the reciprocating motion.After adopting this double form that moves back and forth, can increase work efficiency greatly.(as if initial position is the mould that left inflatable body is aimed at the left side during work; right inflatable body is aimed at the mould on right side); the whole moving mechanism in a left side drives the mould in left side; template and clasp mould mechanism integral body move right the die head below; the clasp mould mechanism close die in left side; mould is clamped pipe; electric heat cutter is cut off the pipe of being extruded by die head (or claiming extruded stock group); the whole moving mechanism in a left side to left movement (simultaneously; right whole moving mechanism is to left movement); make the mold alignment left side inflatable body (at this moment, the mold alignment die head on right side) in left side, the blow-molding system in left side is carried out bottle blowing, and (die head is extruded pipe; the mould closure on right side; clamp pipe, electric heat cutter is cut off pipe), behind the blow molding; the mold open in left side; inflatable bar withdrawal in the inflatable body of left side, goods come off automatically, and the whole moving mechanism in a left side moves right die head below clamp base (right whole moving mechanism moves right right inflatable body below and carries out bottle blowing) again; a left side; right blow-molding system is carried out in turn, goes round and begins again.The shifting formwork seat during being included in, is installed between template and the rear pattern plate its described left and right whole moving mechanism, the shifting formwork seat is driven by mould shifting oil cylinder, guide rod passes the shifting formwork seat, one of the shifting formwork seat is equipped with the slide block first, the slide block first matches with rack-mounted cross slide way first, linear guides has been arranged, made and to operate steadily, reliably.Set up secondary mould between its described front template and the rear pattern plate, secondary mould is parallel with mould and against the outside of left and right inflatable body, secondary mould is consistent with the die cavity of mould, and the forward and backward two halves die cavity edge of secondary mould is equipped with relative cutting knife respectively, and cutting knife is driven by the otch cylinder.This trimming mechanism comprises and the corresponding to secondary mould of mold cavity that cutting knife is installed at the die cavity edge of secondary mould, and it is cut to be exposed at the outer part (being overlap) of die cavity, and the goods that are included in the die cavity are finished product.Behind the product molding, through the automatic deburring of trimming mechanism, and need not artificial deburring, production is changed in real realization voluntarily, high efficiency, and save labour turnover.Its concrete course of work is as follows: behind the pipe blow molding in the mould (at this moment, mould faces inflatable body), clasp mould mechanism impels front template and rear pattern plate separately, moving-mold mechanism drives whole clasp mould mechanism (comprising mould and secondary mould) and moves to gripping pipe (being convenient to inflatable body blowing next time) under the die head, meanwhile, secondary mould moves under the inflatable body; Matched moulds; secondary mould is clamped the pipe that inflatable bar clips; inflatable bar withdrawal in the inflatable body; moving-mold mechanism drives whole clasp mould mechanism and oppositely moves; make mould move to (inflatable bar action) under the inflatable body again, this moment, secondary mould was positioned at the Ji Pingzhuanzhichu in the inflatable body outside, otch cylinder operation; make cutting knife along the goods profile cut, the outer overlap of profile is promptly excised automatically.Behind the pipe blow molding in the mould, die sinking, the goods in the secondary mold cavity promptly fall in conveyer belt or the collection bottle case.This automatic trimming mechanism not only can be used for single station, also can be used for multistation, as two stations, three stations, four stations or the like.Upper cutter and back upper cutter (being the top that forward and backward upper cutter contains whole die cavity) before be equipped with respectively on the top at the forward and backward two halves die cavity edge of its described secondary mould, one of them cutting knife is driven by the upper cut cylinder, undercutting cutter and back undercutting cutter (being the bottom that forward and backward undercutting cutter contains whole die cavity) before be equipped with respectively the bottom, one of them undercutting cutter is driven by the undercut cylinder.In the upper and lower, whole die cavity edge of secondary mould one group of relative cutting knife is installed respectively, and every group of cutting knife drive by a cylinder, make stressed evenly, otch is neat, smooth, attractive in appearance.The end face of its described forward and backward undercutting cutter is collided with the locating piece that is installed on the template, locating piece matches with the goods bottom, a undercutting cutter connects the piston rod of undercut cylinder, another undercutting cutter is fixed on the connecting rod through spring, connecting rod is fixed on the template, the undercutting cutter is driven by the undercut cylinder, by spring reset.Its described inflatable body comprises the air blowing tube that is driven by actuating unit, the tube of blowing is shaped on radially passage, passage is communicated with cylinder, and inflatable bar is equipped with in the lower end of the tube of blowing, and the air blowing core is installed in the inflatable bar, the air blowing core is shaped on gas passage, the gas passage inlet communicates with passage, and the gas passage outlet is communicated with the pipe mouth through blow needle, and its air blowing outer core is shaped on the cooling duct, the entrance and exit of cooling duct connects water pipe respectively, forms cooling system.Set up water cooling system at the air blowing outer core, can in time cool off the heat of being come by the blow needle conduction, the core of guaranteeing to blow is operated under the temperature constant state, thereby guarantees the blowing quality; And gas passage is positioned at the inwall of air blowing core, and the cooling duct is positioned at the outer wall of air blowing core, and two passages are separate, mutually noninterfere.Its described air blowing tube is fixed under the fixed mount, fixed mount is driven by actuating unit, actuating unit is fixed on the frame through support, the support both sides are installed guide pillar respectively, and guide pillar passes fixed mount, and the lower end of guide pillar links to each other through fixed head, actuating unit drives the whole inflatable body mass motion that is installed under the fixed mount, make blow needle match or be separated, guide pillar has been arranged, can make motion steadily, reliably with the pipe mouth.

Description of drawings

Fig. 1 is that the master of the utility model multi-blank multi-layer co-extruding blow moulding machine looks schematic diagram;

Fig. 2 is that the A of Fig. 1 is to schematic diagram;

Fig. 3 is the die head cross-sectional schematic of the utility model multi-blank multi-layer co-extruding blow moulding machine;

Fig. 4 is B-B cross-sectional schematic of Fig. 3;

Fig. 5 is the structural representation of baffle first;

Fig. 6 is the structural representation of baffle second;

Fig. 7 is the structural representation of baffle third;

Fig. 8 is the whole moving mechanism structural representation of the utility model multi-blank multi-layer co-extruding blow moulding machine;

Fig. 9 is that the C of automatic trimming mechanism is to schematic diagram;

Figure 10 is that the D of Fig. 9 is to schematic diagram;

Figure 11 is an inflatable body cross-sectional schematic of the present utility model;

Figure 12 is that schematic diagram is looked on an inflatable body of the present utility model left side.

The specific embodiment

The utility model discloses a kind of multi-blank multi-layer co-extruding blow moulding machine, as shown in Figure 1 and Figure 2, comprise plasticizing system, die head extrusion system and blow-molding system, described plasticizing system comprises screw rod in hopper 16, barrel 19 and the barrel and the electric heater unit on the barrel; Described die head extrusion system comprises more than one die head, each die head is shaped on charging aperture connecting screw rod respectively, and die head comprises die body 11, die body 11 lower end connector moulds 12, mouth mould 12 central authorities are provided with core 13, and the gap between core 13 and mouthful mould 12 forms the extrusion 14 of annular; Described blow-molding system is two, each system comprises inflatable body and clasp mould mechanism respectively, clasp mould mechanism comprises the front template 61 that is linked to each other by guide rod 68, middle template 62 and rear pattern plate 63, between front template 61 and the middle template 62 mould 92 is housed, between middle template 62 and the rear pattern plate 63 lazy-tongs are housed, middle template 62 is driven by die cylinder 621, it is characterized in that installing in the described die body 11 baffle first 2 and baffle the third 4, the baffle first is shaped on step 21, microcephaly below the step is inserted in the mesopore the third 41 of baffle third, microcephaly's outer wall is shaped on guiding gutter first 22 and the vertical runner first 23 that communicates, major part is shaped on transverse flow channels first 24, in the mesopore first 25 of baffle first baffle second 3 is housed, baffle second outer wall is shaped on guiding gutter second 31 and the vertical runner second 32 that communicates, and the upper end of guiding gutter second 31 communicates with charging armatine 51 through transverse flow channels first 24; Baffle the third 4 tops are shaped on transverse flow channels the third 42, and transverse flow channels third is communicated with guiding gutter first 22 and charging aperture second 52, and baffle the third 4 bottom outer walls are shaped on the guiding gutter that communicates the third 43 and vertical runner the third 44, and the upper end of guiding gutter the third 43 is communicated with charging aperture the third 53; Vertical runner first 23, vertical runner second 32 and vertical runner the third 44 converge at core 13 outer walls and are communicated with extrusion 14.Baffle first, second, third concrete structure such as Fig. 5-shown in Figure 7.The baffle first, second, the third 2,3,4 inside and outside intussusceptions, each baffle is shaped on guiding gutter and vertical runner, form three creeping passages, be internal layer creeping passage (its path is: charging armatine 51---transverse flow channels first 24---guiding gutter second 31---vertical runner second 32), middle level creeping passage (its path is: charging aperture second 52---transverse flow channels the third 42---and guiding gutter first 22---vertical runner first 23) and outer creeping passage (its path is: charging aperture the third 53---guiding gutter the third 43---vertically runner the third 44), outer creeping converges in vertical runner first 23 outlets with the middle level creeping earlier, converge with the internal layer creeping to vertical runner second 32 outlets again, extrude from extrusion 14 together after converging for three layers, layers of material is evenly distributed, and after layers of material adopts different plastic materials, meet the different needs, adopt polypropylene to mix as internal layer and middle level with the elastomeric material of different proportion, make internal layer nontoxic, inertia, has good heat sealability and elasticity, skin is higher polyester of mechanical strength or polypropylene material, and surface text printout after treatment is comparatively clear; Perhaps internal layer adopts the composite material of polypropylene and styrene one ethene one butylene one styrol copolymer, and styrene is adopted in the middle level, has more increased the permeability resistance and the elasticity of film material, the outer polypropylene material or the like that adopts.As Fig. 3, shown in Figure 4, its described charging armatine, second, the third 51,52,53 respectively through runner compoboard first, second, the third 54,55,56 connect three screw rods, runner compoboard first, second, third comprises main flow guidance tape 57 and secondary flow guidance tape 58 respectively, the main flow guidance tape is shaped on sprue 571, sprue is communicated with screw rod, secondary flow guidance tape 58 is shaped on runner 581, runner is communicated with sprue and charging aperture, the quantity of runner is consistent with the quantity of die head, three kinds of creepings that come out from three screw rods pass through runner compoboard first, second, the third 54,55,56 shunt after, be transported in the baffle of each die head, thereby in the extrusion 14 of each die head is extruded, in, the goods that outer three-layer plastic is compound.Its described secondary flow guidance tape comprises more than one or two or two, sub-runner on lower floor's secondary flow guidance tape communicates with father's runner of upper strata secondary flow guidance tape, as shown in Figure 4, can tell two runners 581 from sprue 571, certainly each bar runner also can be told two again to lower floor's secondary flow guidance tape, again four minutes eight, eight minutes 16 etc. thus, can realize that the multimode head works simultaneously, increase work efficiency greatly.In actual manufacture process, guiding gutter first, second, the third 22,31,43 can be made into straight trough and following spiral fluted combination slot, and creeping owing to form fusion line easily in last straight trough, helicla flute after, can be eliminated fusion line under the process through the very fast arrival helicla flute of straight trough; Vertical runner first, second, the third 23,32,44 can be made into the step trough at concavo-convex interval, and step trough can push creeping, thereby eliminates fusion line, and strengthens the intensity of fusion place; Die body 11, mouthful mould 12 and runner compoboard first, second, the third 61,62,63 are equipped with heating plate 29 respectively outward, and heating plate can guarantee the temperature of creeping, helps flowing fast.Its described die head 1 is fixed on frame 15 tops; the left and right sides of die head 1 is installed left and right inflatable body 7,8 respectively side by side, and mould, template and the clasp mould mechanism corresponding with left and right inflatable body 7,8 are driven by left and right whole moving mechanism respectively does whole the reciprocating motion.This mechanism adopts corresponding two blow-molding system (being double) of a die head extrusion system, can increase work efficiency greatly.(as if initial position is the mould 92 that left inflatable body 7 is aimed at the left side during work; right inflatable body 8 is aimed at the mould 92 on right side); the whole moving mechanism in a left side drives the mould in left side; template and clasp mould mechanism integral body move right die head 1 below; the clasp mould mechanism close die in left side; mould is clamped pipe (extruded stock group); electric heat cutter is cut off the pipe of being extruded by die head (material group); the whole moving mechanism in a left side to left movement (simultaneously; right whole moving mechanism is to left movement); make the mold alignment left side inflatable body 7 (at this moment, the mold alignment die head 1 on right side) in left side, the blow-molding system in left side is carried out bottle blowing, and (die head 1 is extruded pipe; the mould closure on right side; clamp pipe, electric heat cutter is cut off pipe), behind the blow molding; the mold open in left side; inflatable bar withdrawal in the inflatable body of left side, goods come off naturally, and the whole moving mechanism in a left side moves right die head below clamp base (right whole moving mechanism moves right right inflatable body 8 belows and carries out bottle blowing) again; a left side; right blow-molding system is carried out in turn, goes round and begins again.As shown in Figure 8, shifting formwork seat 64 during being included in, is installed between template 62 and the rear pattern plate 63 its described left and right whole moving mechanism, the shifting formwork seat is driven by mould shifting oil cylinder 65, guide rod 68 passes shifting formwork seat 64, one of shifting formwork seat 64 is equipped with slide block first 66, the slide block first matches with cross slide way first 67 on being installed in frame 15, and linear guides has been arranged, and makes to operate steadily, reliably.Also slide block second 681 can be installed on guide rod 68; it is middle with template 62 that slide block second 681 is arranged in front template 61; slide block second 681 matches with cross slide way second 682 on being installed in frame 15; cross slide way second 682 is parallel to each other with cross slide way first 67; adopt two translation linear guides; make and move the stress balance of mould, template and clasp mould mechanism more steady.As Fig. 9, shown in Figure 10, set up secondary mould 91 between its described front template 61 and the rear pattern plate 63, secondary mould 91 and mould 92 are parallel and against the outside of left and right inflatable body 7,8, secondary mould is consistent with the die cavity of mould, the forward and backward two halves die cavity edge of secondary mould 91 is equipped with relative cutting knife respectively, and cutting knife is driven by the otch cylinder, during side cut, it is cut to be exposed at the outer part (being overlap) of die cavity, and the goods that are included in the die cavity are finished product.After automatic trimming mechanism has been arranged, need not artificial deburring, production is changed in real realization voluntarily, high efficiency, and save labour turnover.Its concrete course of work is as follows: behind the pipe blow molding in the mould 92 (at this moment, mould 92 faces inflatable body 7), clasp mould mechanism 6 impels front template 61 and rear pattern plate 63 separately, whole moving mechanism drives whole clasp mould mechanism (comprising mould 92 and secondary mould 91) and moves to gripping pipe (being convenient to inflatable body 7 blowing next time) under the die head 1, meanwhile, secondary mould 91 moves under the inflatable body 7; Matched moulds; secondary mould 91 is clamped the pipe that inflatable bar clips; inflatable bar withdrawal in the inflatable body; whole moving mechanism drives whole clasp mould mechanism 6 and oppositely moves; make mould move to (inflatable bar action) under the inflatable body 7 again, this moment, secondary mould 91 was positioned at the Ji Pingzhuanzhichu in inflatable body 7 outsides, otch cylinder operation; make cutting knife along the goods profile cut, the outer overlap of profile is promptly excised automatically.Behind the pipe blow molding in the mould, die sinking, the goods in secondary mould 91 die cavities promptly fall in conveyer belt or the collection bottle case.This automatic trimming mechanism not only can be used for single station, also can be used for multistation, as two stations, three stations, four stations or the like.Upper cutter 93 and back upper cutter 94 (being the top that forward and backward upper cutter contains whole die cavity) before be equipped with respectively on the top at the forward and backward two halves die cavity edge of its described secondary mould 91, one of them upper cutter is driven by upper cut cylinder 95; Undercutting cutter 96 and back undercutting cutter 97 (being the bottom that forward and backward undercutting cutter contains whole die cavity) before be equipped with respectively the bottom, one of them undercutting cutter is driven by undercut cylinder 98, in the upper and lower, whole die cavity edge of secondary mould 91 one group of relative cutting knife is installed respectively, and every group of cutting knife drives by a cylinder, make stressed evenly, otch is neat, smooth, attractive in appearance.The end face of its described forward and backward undercutting cutter 96,97 is collided with the locating piece 69,70 that is installed on the forward and backward template 61,63, locating piece matches with the goods bottom, a undercutting cutter connects the piston rod 981 of undercut cylinder 98, another undercutting cutter is fixed on the connecting rod 73 through spring 72, connecting rod is fixed on the template, the undercutting cutter is driven by undercut cylinder 98, is resetted by spring 72.As Figure 11, shown in Figure 12, its described inflatable body comprises the air blowing tube 81 that is driven by actuating unit, the tube of blowing is shaped on radially passage 811, passage is communicated with cylinder through pipeline 801, inflatable bar 82 is equipped with in the lower end of air blowing tube 81, air blowing core 83 is installed in the inflatable bar, the air blowing core is shaped on gas passage 831, the gas passage inlet communicates with passage 811, the gas passage outlet is communicated with the pipe mouth through blow needle 84, its described air blowing core 83 outer walls are shaped on cooling duct 832, and the inlet 833 of cooling duct is connected water pipe 843,844 respectively with outlet 834, forms cooling system.Set up water cooling system at air blowing core 83 outer walls, can in time cool off the heat of being come by blow needle 84 conduction, the core 83 of guaranteeing to blow is operated under the temperature constant state, thereby guarantees the blowing quality; And gas passage 831 is positioned at the inwall of air blowing core 83, and cooling duct 832 is positioned at the outer wall of air blowing core 83, and two passages are separate, mutually noninterfere.Its described air blowing tube 81 is fixed in fixed mount 86 times, fixed mount 86 is driven by actuating unit 87, and actuating unit 87 is fixed on the frame through support 85, and support 85 both sides are installed guide pillar 88,89 respectively, guide pillar passes fixed mount 86, and the lower end of guide pillar 88,89 links to each other through fixed head 80.Actuating unit 87 drives the whole inflatable body mass motion that is installed under the fixed mount 86, makes blow needle 84 match or be separated with the pipe mouth, and guide pillar 88,89 has been arranged, and can make motion steadily, reliably.For service life and the reduction replacement cost that prolongs guide pillar, can between guide pillar 88,89 and fixed mount 86, axle sleeve be installed respectively.

Claims (10)

1. multi-blank multi-layer co-extruding blow moulding machine comprises plasticizing system, die head extrusion system and blow-molding system, and described plasticizing system comprises screw rod in hopper, barrel and the barrel and the electric heater unit on the barrel; Described die head extrusion system comprises more than one die head, each die head is shaped on charging aperture connecting screw rod respectively, and die head comprises die body, die body lower end connector mould, mouth mould central authorities are provided with core, and the gap between core and mouthful mould forms the extrusion of annular; Described blow-molding system is two, each system comprises inflatable body and clasp mould mechanism respectively, clasp mould mechanism comprises the front template that is linked to each other by guide rod, middle template and rear pattern plate, between front template and the middle template mould is housed, between middle template and the rear pattern plate lazy-tongs are housed, middle template is driven by die cylinder, it is characterized in that installing in the described die body (11) baffle first (2) and baffle third (4), the baffle first is shaped on step (21), microcephaly below the step is inserted in the mesopore third (41) of baffle third, microcephaly's outer wall is shaped on guiding gutter first (22) and the vertical runner first (23) that communicates, major part is shaped on transverse flow channels first (24), in the mesopore first (25) of baffle first baffle second (3) is housed, baffle second outer wall is shaped on guiding gutter second (31) and the vertical runner second (32) that communicates, and the upper end of guiding gutter second (31) communicates with charging armatine (51) through transverse flow channels first (24); Baffle third (4) top is shaped on transverse flow channels third (42), transverse flow channels third is communicated with guiding gutter first (22) and charging aperture second (52), baffle third (4) the bottom outer wall is shaped on guiding gutter third (43) and the vertical runner third (44) that communicates, and the upper end of guiding gutter third (43) is communicated with charging aperture third (53); Vertical runner first (23), vertical runner second (32) and vertical runner third (44) converge at core (13) outer wall and are communicated with extrusion (14).

2. multi-blank multi-layer co-extruding blow moulding machine as claimed in claim 1, it is characterized in that described charging armatine, second, third (51,52,53) connect three screw rods through runner compoboard first, second, third (54,55,56) respectively, runner compoboard first, second, third comprises main flow guidance tape (57) and secondary flow guidance tape (58) respectively, the main flow guidance tape is shaped on sprue (571), sprue is communicated with screw rod, secondary flow guidance tape (58) is shaped on runner (581), runner is communicated with sprue and charging aperture, and the quantity of runner is consistent with the quantity of die head.

3. multi-blank multi-layer co-extruding blow moulding machine as claimed in claim 2 is characterized in that described secondary flow guidance tape comprises more than one or two or two, and the sub-runner on lower floor's secondary flow guidance tape communicates with the secondary runner of upper strata secondary flow guidance tape.

4. multi-blank multi-layer co-extruding blow moulding machine as claimed in claim 1; it is characterized in that described die head (1) is fixed on frame (15) top; the left and right sides of die head (1) is installed left and right inflatable body (7,8) respectively side by side, and mould, template and the clasp mould mechanism corresponding with left and right inflatable body (7,8) driven by left and right whole moving mechanism respectively and do whole the reciprocating motion.

5. multi-blank multi-layer co-extruding blow moulding machine as claimed in claim 4, it is characterized in that described left and right whole moving mechanism is included in installation shifting formwork seat (64) between middle template (62) and the rear pattern plate (63), the shifting formwork seat is driven by mould shifting oil cylinder (65), guide rod (68) passes shifting formwork seat (64), one of shifting formwork seat (64) is equipped with slide block first (66), and the slide block first matches with cross slide way first (67) on being installed in frame (15).

6. multi-blank multi-layer co-extruding blow moulding machine as claimed in claim 1, it is characterized in that setting up secondary mould (91) between described front template (61) and the rear pattern plate (63), secondary mould (91) is parallel with mould (92) and against the outside of left and right inflatable body (7,8), secondary mould is consistent with the die cavity of mould, the forward and backward two halves die cavity edge of secondary mould (91) is equipped with relative cutting knife respectively, and cutting knife is driven by the otch cylinder.

7. multi-blank multi-layer co-extruding blow moulding machine as claimed in claim 6, the top that it is characterized in that the forward and backward two halves die cavity edge of described secondary mould (91) is equipped with preceding upper cutter (93) and back upper cutter (94) respectively, and one of them upper cutter is driven by upper cut cylinder (95); Undercutting cutter (96) and back undercutting cutter (97) before be equipped with respectively the bottom, one of them undercutting cutter is driven by undercut cylinder (98).

8. multi-blank multi-layer co-extruding blow moulding machine as claimed in claim 7, the end face that it is characterized in that described forward and backward undercutting cutter (96,97) is collided with the locating piece (69,70) that is installed on the forward and backward template (61,63), locating piece matches with the goods bottom, a undercutting cutter connects the piston rod (981) of undercut cylinder (98), another undercutting cutter is fixed on the connecting rod (73) through spring (72), and connecting rod is fixed on the template.

9. multi-blank multi-layer co-extruding blow moulding machine as claimed in claim 1, it is characterized in that: inflatable body comprises the air blowing tube (81) that is driven by actuating unit, the tube of blowing is shaped on radially passage (811), passage is communicated with cylinder, inflatable bar (82) is equipped with in the lower end of air blowing tube (81), air blowing core (83) is installed in the inflatable bar, the air blowing core is shaped on gas passage (831), the gas passage inlet communicates with passage (811), the gas passage outlet is communicated with the pipe mouth through blow needle (84), described air blowing core (83) outer wall is shaped on cooling duct (832), and the inlet of cooling duct (833) is connected water pipe (843 respectively with outlet (834), 844), form cooling system.

10. multi-blank multi-layer co-extruding blow moulding machine as claimed in claim 9, it is characterized in that described air blowing tube (81) is fixed under the fixed mount (86), fixed mount (86) is driven by actuating unit (87), actuating unit (87) is fixed on the frame through support (85), support (85) both sides are installed guide pillar (88,89) respectively, guide pillar passes fixed mount (86), and the lower end of guide pillar (88,89) links to each other through fixed head (80).

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