CN2115197U - Two-station blowing formed device - Google Patents

Abstract

The utility model relates to one-step method two-station blowing formed device which solves the problems of complicated structure, high manufacturing cost, difficult die change, etc. Existing in the present equipment. The two blow moulding assemblies 15 of the utility model corresponding to an injection molding assembly 16 are symmetrically arranged; an injection moulding preform mould 3 and a blow moulding mould 6 have one mould with multiple cavities; the injection moulding cavity and a push rod 19 as well as the blow moulding cavity and a blowing rod 13 are guaranteed in the same shaft by a guide rod 12; two grip moulds 8 move horizontally back and forth at the vertical direction with the shaft line of the push rod 19 or the blowing rod 13 to transfer preform parison alternately to a blow molding station, and the preform parison is drawn and blow moulded into a hollow body by the blow moulding assemblies 15. The utility model has the advantages of simple structure, low manufacture cost and high productive efficiency.

Description

Two-station blowing formed device

The utility model relates to blow molding arrangement, two blowing assemblies are with respect to injection moulding assembly symmetric arrangement, two folder mouthful moulds are annotated one and are blown the station alternation blowing one, the preform clamping that injection moulding is formed is transplanted on blow molding station, after being blow molded into the pattern matched moulds, stretch blow molded into an end opening, the hollow body of end sealing by the blowing assembly.

The hollow bodies from thermoplastic material (as beverage bottle) of making an end opening, an end closure with the method for stretching, blow molding is that everybody is familiar with.Normally earlier plastic material is injection molded into the system of the giving parison of constant weight and shape by the injection moulding main frame, sends into by the clamping conveying mechanism then and be blow molded into the blow molding that stretches in the pattern.Its blow molding apparatus such as Chinese patent disclosed " blow moulding machine " (number of patent application 85101777, open day 870131), the composition of this blow moulding machine has: " a horizontally disposed rotating shaft; supporting wheel disc; and can rotate; a hub that is installed on the rotating shaft and can rotates with rotating shaft with axle; and can dismantle; also have system's mould, when mould is closed, form a mould internal cavity, every mold is made up of a pair of matrix, and first matrix of every mold is assemblied on the hub, make these matrixs along the circle spacing be arranged on the hub.Second matrix of every mold also along the circle spacing be arranged on the wheel disc, and with the above-mentioned first matrix radially aligned; Second matrix is installed on slidable device, enables to be toward or away from first matrix ".One of problem that this blow moulding machine exists is: complex structure, and the manufacturing cost height, the blow molding mould that two matrixs are formed comprises a die cavity, promptly so-called " one goes out one ".In order to enhance productivity, need arrange along the circle spacing and overpay mould, make and install, adjust and more mold exchange is all complicated that particularly closing precision is difficult to grasp.That Chinese patent also discloses is a kind of " making the method and the device of hollow articles of heat-plastic material " (number of patent application 85106193, open day 870304) " this device comprises blank shaping position, semi-finished product blowing position, at least one temperature equilbrium position, and the drawing of hollow body dialled and the extracting position of blowing position and hollow body." from figure, we can see that the core of device is a cylinder 9(Fig. 1 who rotates step by step around axle), be used for determining corresponding 8 operating positions of different phase (from 1 to 8) with the utility model hollow body manufacture method.Its weak point is: because blank mould and moulding mould also all only comprise a die cavity, the i.e. structure of " goes out ", and the formation of a hollow body needs eight operating positions, not only structure is still complicated, and the production efficiency of hollow body also is difficult to improve, by embodiment, it is 12 seconds that hollow body production is clapped, and also is 5 hollow bodies of per minute blowing.

The purpose of this utility model is to overcome the above-mentioned deficiency of existing in prior technology and a kind of simple in structure, low cost of manufacture is provided, and production efficiency is higher, is suitable for the blow molding apparatus of practical one-step method two stations.

The purpose of this utility model is realized by following technical proposal.

According to the total design of the utility model, can be divided into horizontal or vertical two kinds of blow molding apparatus.

Horizontal blow molding apparatus of the present utility model; comprise base; frame; the injection moulding main frame; pre-pattern of injection moulding and injection moulding assembly; two matrixs are formed is blow molded into pattern and blowing assembly; sequentially-operating is controlled a driven unit and demoulding assembly; one group of horizontal guide of frame is parallel with the axis of injection moulding main frame; its push rod along the axial shift reciprocately of horizontal guide of injection moulding assembly that is installed on the horizontal guide is coaxial with the pre-pattern cavity axis of injection moulding; two blowing assemblies are with respect to injection moulding component level symmetric arrangement; it blows bar and the die cavity axis coaxle that is blow molded into behind the pattern matched moulds along the axial shift reciprocately of horizontal guide; and with the push rod shaft line parallel in the injection moulding assembly; contour; two folder mouthful moulds reach between pre-pattern of injection moulding and the injection moulding assembly at the blowing assembly with being blow molded between the pattern; along its horizontal guide rail and perpendicular to push rod or blow rod axis and blow between two stations at notes and alternately back and forth transfer preform; the die orifice number of folder mouthful mould and the pre-pattern of the injection moulding of a multi-cavity mold or to be blow molded into the die cavity number of pattern identical; and it is coaxial with the pre-pattern of injection moulding chamber at its die orifice of injection moulding station to be provided with assurance folder mouthful mould; at the coaxial centering positioner of its die orifice of blow molding station and blow molding die cavity; the a pair of matrix that is blow molded into pattern can form die sinking and matched moulds along its vertical guide stem position complex displacement; this integral installation that is blow molded into pattern is on the horizontal guide of frame; a folder mouthful die clamp is held preform and is transplanted on blow molding station; being blow molded into pattern moves axially along the frame horizontal guide; two matrix vertical direction closures then; form a plurality of die cavitys, preform stretches blow molded into an end opening by the blowing assembly in each die cavity; the hollow body of one end sealing

Thought of the present utility model be blow one annotate one blow the station symmetric arrangement also promptly two blowing assemblies with respect to injection moulding assembly symmetric arrangement; utilize the level of frame or vertical guide stem from mechanism guarantee push rod the injection moulding assembly with the injection moulding die cavity die cavity axis coaxle after the blowing bar and being blow molded into the pattern matched moulds in the coaxial and blowing assembly; it is coaxial with corresponding blow molding die cavity or the pre-pattern of injection moulding chamber to guarantee to blow the folder mouth mould of back and forth transferring preform between station at notes one with the centering positioner; therefore according to thought of the present utility model; the corresponding frame vertical guide stem of vertical blow molding apparatus should be vertical with the horizontal axis of injection moulding main frame; the blowing assembly is with respect to an injection moulding assembly left side; right bilateral symmetry is arranged; two matrixs that are blow molded into pattern form die sinking or matched moulds along its horizontal guide shift reciprocately, and it should be identical that other technology constitutes with horizontal blow molding apparatus.

In order to improve the operating characteristics of the utility model blow molding apparatus, be convenient to grasp and improve two folder mouthful moulds and the pre-pattern of injection moulding and be blow molded into the axiality of each corresponding die cavity axis of pattern, the centering positioner connects to join on the face and is advisable to be located at a folder mouthful mould, connect after promptly tapered sleeve that is formed by die orifice place behind the folder mouthful mould matched moulds and the pre-pattern of injection moulding connect and join face and be blow molded into the pattern matched moulds to join and forms the taper that equidistantly matches on the face and sink to cheat and constitute, in push rod in the injection moulding assembly and the blowing assembly to blow bar coaxial with the centre bore of this tapered sleeve, and run through this centre bore and enter corresponding injection moulding or blow mold cavity.

Be blow molded into the air-tightness of pattern when guaranteeing blowing and simplify closing device, connecing between folder mouthful mould and blowing assembly joined on the face centre bore with its back side tapered sleeve and is provided with coaxially that taper is heavy cheats, the end of sealing cylinder piston rod in the blowing assembly is provided with the cone that matches with the heavy hole of taper, and also can on heavy hole of taper and cone encapsulant reinforced seal effect be set.

Form opposite opened folder mouthful mould by two matrixs and sliding floor; form normally closed mechanism by flexible member such as extension spring, stage clip or leaf spring; therefore the cylinder solid plate that seals of blowing assembly is provided with the Wedge type mould emptier; the center of the wedge that wherein moves back and forth is high, and to join face contour with connecing of folder mouthful mould matched moulds state, and the thickness of wedge and the bottleneck diameter of hollow body promptly press from both sides mouthful die clamp to hold diameter partly relevant.Wedge a folder mouthful mould matched moulds when wedge under the driving cylinder effect and connect (enter for the ease of wedge, the seamed edge of matrix is answered chamfering) when joining face, a folder mouthful mould is opened, and hollow body falls by gravity, and wedge withdraws from, folder mouthful mould closure immediately under the elastic force effect.Enter next working cycles.

Compared with prior art, the most tangible advantage of the utility model is simple in structure, low cost of manufacture.Existing blow moulding machine such as wheeled blow moulding machine, a wheel disc are supporting a series of moulds of arranging along the circle spacing, wheel disc is generally around the trunnion axis one-directional rotation, the formation of hollow body is generally through injection moulding, stretching, a blowing 3--4 station, wheel diameter strengthens no doubt can arrange that a little moulds improve the depanning rate more, but structure is then more complicated, and the mould room is many.Adopt device of the present utility model, utilization is between pre-pattern of injection moulding and injection moulding assembly, and be blow molded into alternately moving back and forth of two between pattern and blowing assembly folder mouthful mould, the preform clamping under the state that still is in blow temperatures that is injection molded into is transported to blow molding station to be carried out stretch blow-molded, therefore more particularly advantageous is the heating again or the heat preservation method operation of having saved preform, can save the energy.And because of being blow molded into pattern and blowing assembly with respect to injection moulding assembly symmetric arrangement, an one folder mouthful mould (first) is positioned at the injection moulding station, another folder mouthful mould (second) then is in blow molding station (A), another blow molding station (B) is in " room ", after the parison injection moulding finishes, be transferred to blow molding station (B) blow molding by folder mouthful mould (first) clamping, and a folder mouthful mould (second) enters the injection moulding of injection moulding station, blow molding station (A) is positioned at " room ", alternate cycles like this, two folder mouthful moulds and the pre-pattern of injection moulding and injection moulding assembly be " full load operation " continuously all the time, clearly a bit be simple and compact for structure, the mould room is few, and device fabrication and mould adjustment are all comparatively convenient.

Well imagine, improve the depanning rate that efficiency of equipment must need to improve mould.The utility model adopts hot flow path device multi-cavity mold can adapt to the processing of various performance raw materials and satisfies the requirement of production efficiency.The pre-pattern of injection moulding is identical with the die cavity number that is blow molded into pattern; Folder mouth mould die orifice number that adapts therewith and push rod or to blow the pole-footing number average identical with above-mentioned die cavity number, usually die cavity is several is designed to 2--6 (or more some more) according to the gram number of injection machine and the weight of single hollow body, clearly compare with the blow moulding machine of single die cavity multistation, the scheme that the utility model is enhanced productivity is more economical, reasonable.As to the described device of this file (2), eight stations, the productive temp of a hollow body is 12 seconds, per minute is made 5 of hollow bodies, and by device of the present utility model, a mould four chambeies, it is 16 that per minute is produced hollow body, (as a mould six chambeies, the hollow body that per minute is produced is then more).

Well imagine, produce the hollow body of the even high-quality precision of wall thickness, except the other factors, wherein have a bit to guarantee the push rod of die cavity axis and injection moulding assembly and the axis coaxle that blows bar of blowing assembly exactly, promptly require certain accuracy of alignment.The die cavity axis that device injection moulding die cavity of the present utility model and injection moulding push rod and being blow molded into forms behind the pattern matched moulds and the axiality of blowing bar of blowing assembly are to be guaranteed by separately level or vertical guide stem.Folder mouthful mould and the pre-pattern of injection moulding and folder mouth mould are by the assurance of taper pin one taper hole centering positioner with the axiality that is blow molded into pattern, satisfy folder mouthful mould obviously easily at injection moulding and blow molding station and pre-pattern of corresponding injection moulding and the accuracy of alignment requirement that is blow molded into pattern.

Description of drawings is as follows:

Fig. 1 is the structural representation of the horizontal blow molding apparatus of the utility model.(vertical view)

Fig. 2 is injection, stretch-blow two station horizontal layout and mechanism kinematic schematic diagram.

Fig. 3, the 4th, the structural representation of two sides of the utility model horizontal type device.

Fig. 5 is the partial cutaway schematic of injection moulding station.

Fig. 6 is the partial cutaway schematic of blow molding station folder mouthful mould.

Fig. 7 is a wedge lever mould emptier schematic diagram.

Fig. 8 is the reciprocating motion driving mechanism schematic diagram that gas (hydraulic pressure) cylinder drives.

Fig. 9 is that gear ┄ screw moves back and forth the driving mechanism schematic diagram.

Figure 10 is the structural representation of the vertical blow molding apparatus of the utility model.

The utility model will be described in further detail in conjunction with the accompanying drawings and embodiments.

At first the structure of horizontal shaped device of the present utility model and the horizontal layout of injection moulding ┄ stretch-blow two stations are described with reference to accompanying drawing 1--4.Shaped device of the present utility model comprises that base 7, frame 4, injection moulding main frame 1, the pre-pattern 3 of injection moulding and injection moulding assembly 16, two are blow molded into mould mould 6 and blowing assembly 15, sequentially-operating control--driven unit 5 and demoulding assembly 11.Two are blow molded into pattern 6 and corresponding blowing assembly 15 is arranged and is installed on the horizontal guide 12 with respect to injection moulding assembly 16 central axis horizontal symmetrical.The central axis of injection moulding assembly 16 and injection moulding main frame 1 axis coaxle, the position of general injection moulding main frame 1 is according to injection moulding die cavity situation.Be advisable in the centre position that is arranged on the pre-pattern 3 of injection moulding, frame 4 is made of the connection end plate 26 at one group of horizontal guide that is parallel to each other 12 and horizontal guide 12 two ends, the axis of injection moulding main frame 1 is parallel with horizontal guide 12, is installed in injection moulding assembly 16 one group injection moulding push rods 19 and one group of die cavity axis coaxle that the pre-pattern 3 of injection moulding on the same group of horizontal guide 12 is installed on the horizontal guide 12.One group of same blowing assembly 15 blows bar 13 and is blow molded into the one group of die cavity axis coaxle that is constituted behind pattern 6 matched moulds and also guarantees by horizontal guide 12.Blowing bar 13 axis parallel, contour and radical and the pre-mould 3 of injection moulding or being blow molded into the die cavity number of pattern 6 of one group of push rod 19 in the injection moulding assembly 16 and blowing assembly 15 is identical.Two folder mouthful moulds 8 are between pre-pattern 3 of injection moulding and injection moulding assembly 16 and be blow molded between pattern 6 and the blowing assembly 15, and move back and forth with respect to the push rod 19 or the axis normal of blowing bar 13, after handover puts in place, the die orifice axis of folder mouthful mould 8 should with blow bar 13, the blow molding die cavity is coaxial, and is or coaxial with injection mo(u)lding die cavity and push rod 19.

According to the hollow body shape that will make and weight requirement, produce a certain amount of pasty state plasticizing material by injection moulding main frame 1 earlier, through hot runner manifold 42, the nozzle self-locking device 43 of the pre-shape mould 3 of injection moulding, enter pre-pattern chamber, the pre-pattern 3 of injection moulding moves axially and folder mouth mould 8 matched moulds that are positioned at the injection moulding station, injection moulding assembly 16 moves axially and makes injection moulding push rod 19 insert the injection moulding die cavity then, make an end opening, the tubulose of one end sealing gives the system parison, the injection mould cavity outer wall is provided with cooling water channel 41, is provided with heat insulating mattress 44(referring to Fig. 5 between hot runner manifold 42 and the nozzle self-locking device 43).Give the system parison by folder mouthful mould 8 clampings, be transferred to blow molding station II or III along its horizontal guide rail 9 from injection moulding station I, blow molding ˇ mould is axially transferred along horizontal guide 12 and is put in place, and upper and lower then matrix 37 constitutes one group of airtight shaping mold cavity along its vertical guide stem 38 matched moulds.Blowing assembly 15 is along horizontal guide 12 axial " feeding ", earlier by the heavy hole 22 of the taper of the piston rod 21 end cone closure clamp mouth moulds 8 that seal cylinder 20, blowing bar 13 then passes a folder mouthful mould 8 and enters shaping mold cavity, preform is carried out longitudinal stretching, be blown into compressed air and make its generation horizontal expansion and obtain the hollow container identical (referring to Fig. 6) with die cavity.From Fig. 1,4 as seen, no matter between pre-pattern 3 of injection moulding and the injection moulding assembly 16, still be blow molded into axiality between pattern 6 and the injection moulding assembly 15 by its horizontal guide 12 and be blow molded into the vertical guide stem 38 that pattern 6 matched moulds use and guarantee; Therefore between injection moulding station I and blow molding station II or III, back and forth transfer two folder mouthful moulds 8 of parison, must guarantee that kinematic accuracy could guarantee the injection moulding die cavity--folder mouthful mould 8--injection moulding push rod 19, or blow mold cavity--a folder mouthful mould 8--blows the coaxial of bar 13 three's axis.Well imagine to adopt to move horizontally position-limit mechanism, (spacing or ratchet position-limit mechanism) as block, present embodiment adopts taper pin one taper hole formula centering positioner 23 as shown in Figure 1.Behind the axial matched moulds of injection moulding station, guarantee that folder mouthful mould 8 is coaxial with injection moulding die cavity and push rod 19 threes, behind the blow molding station matched moulds, guarantee folder mouthful mould and blow mold cavity and blow bar 13 three's axis coaxles.

Be blow molded into and promptly form one group of airtight blow molding die cavity after pattern 6 includes 37, two matrix 37 closures of upper and lower two matrixs.Present embodiment is a mould four chambeies i.e. " one goes out four ", and matrix 37 is installed on the vertical guide stem 38, drives two-way moving by blowing mould locked mode cylinder 36, forms die sinking and matched moulds.The integral body that is blow molded into pattern 6 then is mounted on the horizontal guide 12, is driven to move back and forth to carry by blowing mould driving cylinder 27 to put in place.The fixed form 10 of blowing assembly 15 and sleiding form 14 are installed on the horizontal guide 12, sealing cylinder 20 is installed on the fixed form 10, this seals cylinder 20 a hollow tubular piston rod 21, the cone of its boom end and a folder mouthful mould 8 connect joins that the heavy hole 22 of set taper matches on the face, it is coaxial with this piston rod 21 to blow bar 13, and forms movingly with the pilot hole of this piston rod 21; Sub-cylinder 18 and inflatable bar 13 are installed on the sleiding form 14, and both gas circuits communicate, and sleiding form 14 drives and moves back and forth along horizontal guide 12 by blowing bar displacement cylinder 30.

, stretch and blow and can carry out step by step according to the situation of hollow body draw ratio or material, technological parameter referring to Fig. 6 at the relative position of each member of blow molding station, the horizontal expansion of blowing then of promptly first longitudinal stretching also can stretching limit, limit be blown and is carried out synchronously.After blow-moulding process finished, blowing assembly 15 return back to original ready position, was blow molded into pattern 6 die sinkings and also returned to original ready position.Yet the hollow body of blow molding still by folder mouthful mould 8 clampings, in the blow molding station demoulding, is provided with Wedge type mould emptier 11 on the fixed form 10 of blowing assembly 15.The wedge 28 that this mould emptier 11 comprises wedge driving cylinder 29 and moves back and forth.It is contour that connecing when wherein the center of wedge 28 height is with folder mouth mould 8 matched moulds joined face, wedge 28 enters folder mouthful 8 liang of matrix joints of mould from blowing assembly 15 1 sides, (enter for the ease of wedge, the common chamfering of the seamed edge at this place), make a folder mouthful mould 8 open the hollow body demoulding, fall into product collector 40,, press from both sides mouthful mould 8 by the action of reset spring closure when wedge 28 withdraws from the two matrix composition surfaces that press from both sides mouthful mould 8.And then be transported to the injection moulding of injection moulding station, enter next working cycles, another folder mouthful mould that finishes at injection moulding station injection moulding then is transported to the opposite side blow molding station and enters blow-moulding process simultaneously.As equivalent alternative, after wedge 28 also can carry out the stroke amplification by lever 46, by oscillating oil cylinder 45 effects that drive wedge, from being blow molded into the joint that pattern 6 one sides enter folder mouthful 8 liang of matrixs of mould.(referring to Fig. 7)

Well imagine that two folder mouthful moulds 8 both can carry out the conversion of injection moulding station I and blow molding station II or blow molding station III and injection moulding station I by 32 controls of folder mouthful mould driving cylinder respectively.Also can make of the alternately conversion (beat identical) of two folder mouthful moulds 8 by same driving cylinder 32 effects carrying out synchronously corresponding injection moulding station and blow molding station.When two folder mouthful moulds 8 adopt the scheme of injection moulding stations and the synchronous conversion of blow molding station, structure should satisfy: both centre-to-centre spacing of its centre-to-centre spacing and injection moulding assembly 16 and blowing assembly 15 equated after two folder mouthful moulds 8 connected.

Well imagine, driven member motion is required to the pre-pattern 3 of folder mouth mould 8, demoulding assembly 11, injection moulding and the injection moulding assembly 16 that move toward complex line, is blow molded into pattern 6 and blowing assembly 15, the driving mechanism of its sequentially-operating removes and adopts as the described gas of above-mentioned embodiment (hydraulic pressure) cylinder driving mechanism (as shown in Figure 8), also can adopt gear one rack-and-pinion reciprocating mechanism, the forward and reverse rotation of gear in this mechanism, the shift reciprocately of drive tooth bar; Perhaps gear one screw mandrel formula reciprocating mechanism 47 as shown in Figure 9, forward and reverse rotation of motor in this mechanism is rotated by driving screw mandrel 49 after gear train 48 speed changes, and the past complex line that is transformed into nut 50 moves.

Well imagine, after determining toward sequence of movement, stroke and the speed of complex line reciprocating follower, form an electric control circuit and hydraulic control circuit by means of travel switch, be resolved in the prior art, therefore for sequentially-operating of the present utility model--driven unit 5, the professional and technical personnel should need not performing creative labour and just can reappear.Same after the utility model has been done detailed description to horizontal blow molding apparatus in conjunction with the accompanying drawings and embodiments, reproduce vertical unit of the present utility model, should not have difficulties yet.Figure 10 is the structural representation for the vertical blow molding apparatus of the utility model.51 for installing pre-pattern 3 of injection moulding and injection moulding assembly 16 and being blow molded into pattern 6 and the vertical guide stem of blowing assembly 15 among the figure, 52 is the horizontal guide rail that retaining clip mouth mould 8 moves toward complex lines, and 53 for being used to be blow molded into the horizontal guide of the matrix 37 of pattern 6 as opening and closing mould guiding.

Claims (6)

1, a kind of horizontal two station blow molding apparatus, comprise base, frame, the injection moulding main frame, pre-pattern of injection moulding and injection moulding assembly, be blow molded into pattern and blowing assembly, sequentially-operating control--driven unit and demoulding assembly, it is characterized in that: one group of horizontal guide (12) of frame (4) is parallel with the axis of injection moulding main frame (1), be installed in the injection moulding assembly (16) on the horizontal guide (12), it is along the push rod (19) of horizontal guide (12) axial displacement and the die cavity axis coaxle of the pre-pattern of injection moulding (3), two blowing assemblies (15) are arranged with respect to injection moulding assembly (16) horizontal symmetrical, its along horizontal guide (12) axially shift reciprocately blow bar (13) and the die cavity axis coaxle that is blow molded into behind pattern (6) matched moulds, and parallel with push rod (19) axis, contour.A two folders mouthful mould (8) is positioned to be blow molded into and reaches between pre-pattern of injection moulding (3) and the injection moulding assembly (16) between pattern (6) and the blowing assembly (15), along its horizontal guide rail (9) and perpendicular to push rod (19) or blow bar (13) axis and blow and alternately back and forth transfer preform between two stations annotating one, the die orifice number of folder mouthful mould (8) and the pre-pattern of the injection moulding of a multi-cavity mold (3) or to be blow molded into the die cavity number of pattern (6) identical, and it is coaxial with the pre-pattern of injection moulding chamber at its die orifice of injection moulding station to be provided with assurance folder mouthful mould (8), at the coaxial centering positioner (23) of its die orifice of blow molding station and blow molding die cavity, the a pair of matrix (37) that is blow molded into pattern (6) is gone up shift reciprocately along its vertical guide stem (38), this vertical guide stem (38) and be blow molded into the integral body of pattern (6), be installed in again on the horizontal guide (12) of frame (4), form a plurality of die cavitys behind the matched moulds, preform stretches blow molded into hollow body by blowing assembly (15) in this cavity.

2, blow molding apparatus as claimed in claim 1, it is characterized in that: centering positioner (23) is arranged on folder mouthful mould (8) and the pre-pattern of injection moulding (3) or is blow molded into connecing of pattern (6) joins on the face, by the tapered sleeve (25) and the pre-pattern of injection moulding (3) that form in the die orifice place behind folder mouthful mould (8) matched moulds and be blow molded into pattern (6) and connect and join heavy (24) formation of cheating of taper that the face equal intervals matches, in push rod (19) in the injection moulding assembly (16) and the blowing assembly (15) to blow bar (13) coaxial with the centre bore of this tapered sleeve (25), and run through this centre bore and enter corresponding injection moulding or blow mold cavity.

3, blow molding apparatus as claimed in claim 1 or 2, it is characterized in that: connecing between folder mouthful mould (8) and injection moulding assembly (16) or blowing assembly (15) joined on the face, be provided with the heavy hole of taper (22) coaxially with tapered sleeve (25), the end of sealing cylinder (20) piston rod (21) in blowing is provided with the cone that matches with the heavy hole of this taper (22).

4, blow molding apparatus as claimed in claim 1; it is characterized in that: sealing of blowing assembly (15) Wedge type mould emptier (11) is set on the cylinder solid plate (10), the center of the wedge that wherein moves back and forth (28) is high, and to join face contour with connecing of folder mouthful mould (8) matched moulds state.

5, blow molding apparatus as claimed in claim 1 is characterized in that: be provided with transparently at injection moulding and blow molding station, be used to observe the case (39) of operating mode and insulation.

6, a kind of vertical two station blow molding apparatus, comprise base, frame, the injection moulding main frame, pre-pattern of injection moulding and injection moulding assembly, be blow molded into pattern and blowing assembly, sequentially-operating control ┄ driven unit and demoulding assembly, it is characterized in that: the injection moulding assembly (16) on one group of vertical guide stem (51) of frame, its along guide rod shaft to the push rod (19) of shift reciprocately and the die cavity axis coaxle of the pre-pattern of injection moulding (3), two blowing assemblies (15) are with respect to injection moulding assembly (a 16) left side, the right side symmetric arrangement, its along vertical guide stem (51) axially shift reciprocately blow bar (13) and the die cavity axis coaxle of blowing behind shaping mould (6) matched moulds, and it is parallel with push rod (19) axis, two folder mouthful moulds (8) are positioned at and are blow molded between pattern (6) and the blowing assembly (15) and between pre-pattern of injection moulding (3) and the injection moulding assembly (16), along its horizontal guide rail (52) and perpendicular to push rod (19) or blow bar (13) axis and blow and alternately back and forth transfer preform between two stations annotating one, the die orifice number of folder mouthful mould (8) and the pre-pattern of the injection moulding of a multi-cavity mold (3) or to be blow molded into the die cavity number of pattern (6) identical, and it is coaxial with the injection moulding die cavity at its die orifice axis of injection moulding station to be provided with assurance folder mouthful mould (8), at the coaxial centering positioner (23) of its die orifice axis of blow molding station and blow molding die cavity, the a pair of matrix (37) that is blow molded into pattern (6) can be along its horizontal guide (53) shift reciprocately, this integral body that is blow molded into pattern (6) is installed in again on the vertical guide stem (51) of frame, form a plurality of die cavitys behind the matched moulds, preform stretches blow molded into hollow body by blowing assembly (15) in this die cavity.

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