CN1039293C - Blow molding arrangement - Google Patents

Abstract

The present invention relates to a one-step blow molding forming arrangement with two work stations, which solves the problems of complicated structure, high manufacturing cost, difficult mould replacement, etc. of the existing equipment. Two blow molding assemblies 15 relative to injection molding assemblies 16 of the present invention are symmetrically arranged; an injection molding preforming mould 3 and a blow molding forming mould 6 have multiple cavities; a blow molding mould cavity and a push rod 19 are coaxial and a blow molding mould cavity and a blowing rod 13 are also coaxial by a guide rod 12; two grip moulds 8 are perpendicular to the axial line of the push rod 19 or the blowing rod 13 to horizontally move back and forth; prefabricated mould blanks are alternately transferred to blow molding work stations; the blow molding assemblies 15 are used for stretching the mould blanks for blow molding into a hollow body. The present invention has the advantages of simple structure, low manufacture cost and high production efficiency.

Description

Blow molding arrangement

What the present invention relates to is 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

Use stretching, the method of blow molding is made an end opening, the hollow bodies from thermoplastic material of one end closure (as beverage bottle) is that the normally elder generation that everybody is familiar with moulds the system of the giving parison that main frame is injection molded into constant weight and shape with plastic material by the master, send into by the clamping conveying mechanism then and be blow molded into stretch in the pattern its blow molding apparatus of a blow molding 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, first matrix of every mold is assemblied on the hub, make these matrixs along the circle spacing be arranged in every mold on the hub second matrix 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, the blow molding mould that high two matrixs of manufacturing cost 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 to install, adjust and more mold exchange is all complicated, particularly closing precision is difficult to grasp Chinese patent and also discloses 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 the blank shaping position.Semi-finished product blowing position, the drawing of at least one temperature equilbrium position hollow body dialled and the extracting position of blowing position and hollow body " from figure; we can see; the core of device is a cylinder 9 (Fig. 1) that rotates step by step around axle, are used for determining corresponding 8 operating positions of different phase (from 1 to 8) with hollow body manufacture method of the present invention.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 objective of the invention is to overcome the above-mentioned deficiency of existing in prior technology and provide a kind of simple in structure, low cost of manufacture, and production efficiency is higher, is suitable for the blow molding apparatus of practical one-step method two stations.

The objective of the invention is to be realized by following technical proposal.

According to the total design of the present invention, can be divided into horizontal or vertical two kinds of blow molding apparatus

Horizontal blow molding apparatus of the present invention; look is drawn together 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 what the axial master reset of horizontal guide moved; 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 end sealing.

Thought of the present invention 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 invention; 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 arranges that two matrixs that are blow molded into pattern form die sinking or matched moulds along its horizontal guide shift reciprocately; it should be identical that other technology constitutes with horizontal blow molding apparatus.

In order to improve the operating characteristics of blow molding apparatus of the present invention, 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; by flexible member such as extension spring; stage clip or leaf spring form normally closed mechanism; 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; the thickness of wedge and the bottleneck diameter of hollow body promptly press from both sides mouthful die clamp, and to hold the diameter of part relevant; wedging a folder mouthful mould matched moulds when wedge under the driving cylinder effect connects and (enters for the ease of wedge when joining face; the seamed edge of matrix is answered chamfering); a folder mouthful mould is opened; hollow body falls by gravity; wedge withdraws from, and folder mouthful mould is closed immediately under the elastic force effect.Enter next working cycles.

Compared with prior art, the most tangible advantage of the present invention is simple in structure, low cost of manufacture.Existing blow moulding machine such as wheeled blow moulding machine, one wheel disc is 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, stretch, 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, the mould room is many, adopt device of the present invention, 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 be blow molded into pattern and blowing assembly with respect to injection moulding assembly symmetric arrangement, one folder mouthful mould (first, be positioned at the injection moulding station, another folder mouthful mould (second) then is in another blow molding station of blow molding station (A) (B) and 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 continuous " full load operation " 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, the depanning rate the present invention who improves efficiency of equipment and must need to improve mould 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, and 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 the several gram number and the weight of single hollow body according to injection machine of die cavity are designed to 2--6 (or more some more) and clearly compare with the blow moulding machine of single die cavity multistation, the scheme that the present invention enhances productivity is more economical, rationally 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 invention, one 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 and a bit will 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 invention 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 that the folder mouth mould that is guaranteed by separately level or vertical guide stem is to guarantee by taper pin one taper hole centering positioner with pre-pattern of injection moulding and folder mouth mould with the axiality that is blow molded into pattern, satisfy folder mouthful mould obviously easily at injection moulding and blow molding station and the pre-pattern of corresponding injection moulding be blow molded into the accuracy of alignment requirement of pattern

Description of drawings is as follows:

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

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 horizontal type device of the present invention

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 a 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 present invention

The present invention will be described in further detail in conjunction with the accompanying drawings and embodiments.

At first with reference to structure and the injection moulding of accompanying drawing 1--4 to horizontal shaped device of the present invention--the horizontal layout of-stretch-blow two stations is described, shaped device of the present invention comprises base 7, frame 4, injection moulding main frame 1, pre-pattern 3 of injection moulding and injection moulding assembly 16, two are blow molded into mould mould 6 and blowing assembly 15,11 liang of sequentially-operating control--driven unit 5 and demoulding assemblies are blow molded into pattern 6 and corresponding blowing assembly 15 and arrange and be installed in central axis and injection moulding main frame 1 axis coaxle of injection moulding assembly 16 on the horizontal guide 12 with respect to injection moulding assembly 16 central axis horizontal symmetrical, and generally the position of injection moulding main frame 1 is according to injection moulding die cavity situation.To be straight frame 4 be 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 in the centre position that is arranged on the pre-pattern 3 of injection moulding, 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 between pre-pattern 3 of injection moulding and injection moulding assembly 16 and be blow molded into pattern 5 and blowing assembly 15 with, 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, hot runner manifold 42 through the pre-shape mould 3 of injection moulding, nozzle self-locking device 43, 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 V 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, being blown into compressed air makes its generation horizontal expansion and obtains the hollow container identical with die cavity (referring to Fig. 6) 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 I 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--folder mouthful mould 3--blows bar 13 three's axis coaxial well imagine to adopt 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 that a mould four chambeies are that " one goes out four " matrix 37 is installed on the vertical guide stem 38.Drive two-way moving by blowing mould locked mode cylinder 36, form die sinking and matched moulds, the integral body that is blow molded into pattern 6 then is mounted on the horizontal guide 12, moving back and forth conveying by 27 drivings of blowing mould driving cylinder puts 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.

At the relative position of each member of blow molding station referring to Fig. 6; according to hollow body draw ratio or material; the situation of technological parameter stretches and blows and can carry out step by step; it is the horizontal expansion of blowing then of first longitudinal stretching; also can the air blowing of stretching limit, limit carry out synchronously; after blow-moulding process finishes; blowing assembly 15 return back to the former ready position of adopting; be blow molded into pattern 6 die sinkings and also return to original ready position; yet the hollow body of blow molding is still by folder mouthful mould 8 clampings; for in the blow molding station demoulding; on the fixed form 10 of blowing assembly 15, Wedge type mould emptier 11 is set; the wedge 28 that this mould emptier 11 comprises wedge driving cylinder 29 and moves back and forth; connecing when wherein the center of wedge 28 height is with folder mouth mould 8 matched moulds joined the contour wedge 28 of face and entered 8 liang of matrix joints of folder mouth 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; withdraw from two matrix composition surfaces of folder mouthful mould 8 when wedge 28; folder mouthful mould 8 is by the action of reset spring closure; 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, 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, to the folder mouth mould 3 of driven member motion requirement for moving toward complex line, demoulding assembly 11, pre-pattern 3 of injection moulding and injection moulding assembly 16, be 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 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, drive the shift reciprocately 1 or the one screw mandrel formula reciprocating mechanism 47 of gear as shown in Figure 9 of tooth bar, forward and reverse rotation of motor in this mechanism, rotate by driving screw mandrel 49 after gear train 48 speed changes, the past complex line that is transformed into nut 50 moves.

Well imagine, when sequence of movement toward the complex line reciprocating follower, after stroke and speed are determined, 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 invention--driven unit 5 professional and technical personnel should need not performing creative labour and just can reappear, it is same after the present invention has done detailed description to horizontal blow molding apparatus in conjunction with the accompanying drawings and embodiments, reproduce vertical unit of the present invention, should also not have difficulties.Figure 10 is the structural representation for the vertical blow molding apparatus of the present invention.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 (5)

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 annotating-blowing between two stations and alternately back and forth to transfer preform, 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 press from both sides mouthful mould (8) and the pre-pattern of injection moulding (3) and folder mouthful mould (8) and be blow molded into the taper pin one taper hole centering positioner (23) that has the axiality that can realize them between the pattern, be blow molded into pattern (6) and a pair of matrix (37) and go up shift reciprocately along its vertical guide stem (38), this vertical guide stem (38) and the integral body that is blow molded into pattern (6) are 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, 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 that is blow molded into behind pattern (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 annotating-blowing between two stations and alternately back and forth to transfer preform, 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 press from both sides mouthful mould (8) and the pre-pattern of injection moulding (3) and folder mouthful mould (8) and be blow molded into the taper pin one taper hole centering positioner (23) that has the axiality that can realize them between the pattern, 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.

Images