CN206999599U - Blow molding die closing device and blow moulding machine - Google Patents

Abstract

The utility model provides a kind of blow molding die closing device and blow moulding machine, belongs to technical field of plastic.It solves the problems, such as existing blow molding die closing device structure species deficiency.This blow molding die closing device includes guide rod, two pieces of relative mold mounting plate, oil cylinder and synchromesh gear rackworks be arrangeding in parallel；Two pieces of mold mounting plates are slidably connected with guide rod, and mounting seat is fixedly connected with guide rod；Synchromesh gear rackwork has a gear and two racks being meshed with gear, and two racks are fixedly connected correspondingly with two pieces of mold mounting plates, and gear is rotatablely connected with mounting seat；The cylinder body of oil cylinder is fixedly connected with one of mold mounting plate, and piston rod is fixedly connected with another piece of mold mounting plate.This blow molding die closing device can adjust mold clamping force size by adjusting oil pressure, mold clamping force is matched with mould, and then improve the aesthetic property of product and improve product sealed bottom qualification rate；And there is the advantages of easy to adjust.

Description

Blow molding die closing device and blow moulding machine

Technical field

The utility model belongs to technical field of plastic, is related to a kind of mould open/close device, particularly a kind of blow molding die Closing device.

The utility model belongs to technical field of plastic, is related to a kind of mould open/close device, particularly a kind of blow moulding machine.

Background technology

Plastic bottle is that one kind by polyester (PETG), polyethylene (PE), polypropylene (PP) be raw material, and addition is organic molten accordingly Agent, and after high-temperature heating, pass through plastic containers of the plastic mould by bottle embryo blowing, extrusion blow or injection molding.Plastic bottle It is mainly used in the liquid such as beverage, food, pickles, honey, dry fruit, edible oil, agricultural and veterinary chemicals or solid disposable plastic packaging is held Device.

During using extrusion blow-molded technique manufacture plastic bottle, first it is molded using extruding machine and is cut into suitable blow moulding machine and adds The plastic tube band of section chief's degree, then plastic tube band is put into the mould of blow moulding machine and carries out blow molding, finally taken out out of mould, Separate product and waste material.Existing extrusion blow-molded technique is there is automaticity bottom, and required worker is more and labor intensity is big Problem.In order to improve production efficiency and reduce number of workers, it is thought that using manipulator secondary process scheme, i.e., using machine Tool hand replaces some processes, but production efficiency is still difficult to meet portions of client demand.

Containing ethylene-vinyl alcohol copolymer in laminated vessel, ethylene-vinyl alcohol copolymer is not suitable for recycling, thus It is also those skilled in the art's technical problem to be solved to reduce waste material yield.

In order to realize mould open/close, those skilled in the art propose various folding mould devices.As Chinese patent document is remembered A kind of plastics carried squeeze, drawing-blowing moulding apparatus jaw type clasp mould mechanism (publication number CN1693049A), the open mold of plastic bottle stretch blowing machine Mechanism (Authorization Notice No. CN100534764C), the clasp mould mechanism (Authorization Notice No. CN2923279Y) of plastic draw-blow machine.This Art personnel wish to propose the blow molding die closing device of more different structures, to meet different consumer demands.

The content of the invention

The utility model proposes a kind of blow molding die closing device, the technical problems to be solved in the utility model is how to carry Go out the blow molding die closing device of another structure.

The utility model proposes a kind of blow moulding machine, the technical problems to be solved in the utility model is how to improve blow moulding machine Extrusion blow-molded container efficiency.

Technical problems to be solved of the present utility model can be realized by following technical proposal：This blow molding die closing device Including guide rod and two pieces of relative mold mounting plates be arrangeding in parallel；Two pieces of mold mounting plates are slidably connected with guide rod, on guide rod It is fixedly connected with mounting seat；This blow molding die closing device also includes oil cylinder and synchromesh gear rackwork；Synchromesh gear rack machine Structure has a gear and two racks being meshed with gear, and two racks and two pieces of mold mounting plates are solid correspondingly Fixed connection, gear are rotatablely connected with mounting seat；The cylinder body of oil cylinder is fixedly connected with one of mold mounting plate, piston rod with it is another One piece of mold mounting plate is fixedly connected, or the cylinder body of oil cylinder is fixedly connected with mounting seat, piston rod and one of mould installion Plate is fixedly connected.

This blow molding die closing device can be both connected when installing using mounting seat with other mechanisms, can also use guide rod and other Mechanism is connected.Blow molding die includes left half module and right half module, and left half module is fixed therein on one piece of mold mounting plate, and right half module is fixed On another piece of mold mounting plate.This blow molding die closing device makes the folding parallel with right half module of the left half module of blow molding die, such energy Improve property of being coincide when mould be in matched moulds state, so improve product at spue line flatness, raising product design aesthetic property, And debugging mould is easier, ensure the qualification rate of container bottom closure, that is, having makes mould installion debugging more easily excellent Point.

Synchromesh gear rackwork makes left half module and right half module synchronizing moving in this blow molding die closing device, and then can make a left side Half module and right half module are in contact with plastics embryo simultaneously, and the structure is especially suitable for extrusion blow-molded technique, is effectively ensured extrusion blow-molded Container bottom closure.

This blow molding die closing device uses hydraulic oil cylinder driving, and then gentle with left half module and the motion of right half module and stabilization excellent Point.This blow molding die closing device can also by control cylinder enter Extraction rate further improve left half module and right half module move it is flat Slow property and stability, especially can ensure extrusion blow-molded container bottom by controlling left half module and right half module matched moulds stage speed Portion's sealing qualification rate highest.In other words, it is too fast to efficiently avoid closure pressing speed for this blow molding die closing device, causes mould will Plastics embryo breaks and causes container bottom closure Problem of Failure；And to efficiently avoid closure pressing speed excessively slow, plastics embryo is caused Extruding does not cause container bottom closure Problem of Failure in place.

This blow moulding machine includes frame, rotating disk and multigroup blow molding die closing device, rotating disk and is connected with gantry rotation, multigroup blowing Mould closing device is circumferentially distributed around the shaft core line of rotating disk, by that can make blowing between multigroup blow molding die closing device and rotating disk The radially-directed structure that RADIAL of the mould closing device along rotating disk moves is connected；Multigroup blow molding die closing device and frame it Between be connected by the annular guide frame of one group of guided way trace in a ring；There is straightway in guided way trace.

The quantity of blow molding die closing device yield can flexibly be set according to needed for product in this blow moulding machine.The transfer of this blow moulding machine Disk can be horizontally disposed with, then guide rod is vertically arranged；The blow moulding machine of the arrangement has mold attaching/detaching convenient and easy to maintenance excellent Point.This blow moulding machine turntable can be also vertically arranged, then guide rod is horizontally disposed with；The blow moulding machine of the arrangement has floor space Small, container bottom closure qualification rate is high and the advantages of product more easy mold release.

Multiple blow molding die closing devices are respectively at different states, i.e. part blow molding die closing device is in matched moulds shape State, part blow molding die closing device are in die opening state, part blow molding die closing device is in during matched moulds to die sinking and portion Blow molding die closing device is divided to be in during die sinking to matched moulds.Shaft core line rotation one of the secondary mould along rotating disk in this blow moulding machine Week is just completed from die opening state to matched moulds state, then to die opening state；By controlling the velocity of rotation of rotating disk to make a secondary mould Along the shaft core line of rotating disk rotate a circle the required time with processing one set product required time it is identical.

In above-mentioned blow molding die closing device, the oil cylinder includes piston seat, and inner chamber one end is provided with buffering in oil cylinder Cover, the medial surface of inner chamber is tightly connected in one end of cushion collar and oil cylinder, and inner chamber end face is close in the other end oil cylinder of cushion collar Envelope is fixedly connected；Chamber is connected between a hydraulic fluid port and the medial surface of inner chamber in cushion collar lateral surface and oil cylinder in oil cylinder, delays Rush in the side wall of set the multiple throttle orifices being provided with along the shaft core line direction setting of cushion collar, the cross-sectional areas of multiple throttle orifices from One end of cushion collar is gradually reduced to another extreme direction；One end of piston seat has the buffering stem that can be penetrated in cushion collar；When Stem is buffered when blow molding die closing device is in matched moulds state to be located in cushion collar.This oil cylinder makes blow molding die closing device in mould Closing on the stage speed of closure state gradually reduces, and mould die sinking starting stage speed gradually steps up, remaining step piston Bar, which can be realized, at the uniform velocity to be moved, and then realizes gradual matched moulds and gradually die sinking, has mode hop noise small, avoids generation matched moulds from moulding The advantages that material embryo thrusts phenomenon and container bottom closure is effectively ensured；Moment is avoided to mold and cause product to be led simultaneously Draw deformation or tear damage phenomenon.

Compared with prior art, this blow molding die closing device can adjust mold clamping force size by adjusting oil pressure, make matched moulds Power matches with mould, and then improves the aesthetic property of product and improve product sealed bottom qualification rate；And there is regulation side Just the advantages of.

This blow molding die closing device has that noise is small, manipulation convenient, simple in construction and product sealed bottom qualification rate height The advantages of.

This blow moulding machine is used cooperatively with extruding machine, the extruder head of extruding machine and the mould point installed in blow molding die closing device Conjunction face is oppositely arranged.Extruding machine extrusion plastic indusium is in the mold cramping of matched moulds state, and the mould is moved by driven by rotary disc, entered And draw plastics embryo and enter plastics embryo and be in from die sinking to the mould during matched moulds.The rotating disk of this blow moulding machine is continuous Rotation, the plastics embryo of extruding machine extrusion are continuously entered in blow moulding machine so that plastics embryo need not be cut into section, and then omit cutting And the process such as plastics embryo transfer, and reduce waste material yield.

This blow moulding machine, which has, improves raw material availability, the advantages of improving production efficiency and improve product qualification rate.

Brief description of the drawings

Fig. 1 is the schematic diagram of this blow molding die and extruding machine.Structural representation.

Fig. 2 and Fig. 3 is the dimensional structure diagram of blow molding die closing device different visual angles.

Fig. 4 is the main structure diagram of blow molding die closing device.

Fig. 5 is the cross section structure diagram of A-A in Fig. 4.

Fig. 6 is oil cylinder end cross section structure diagram.

Fig. 7 is the dimensional structure diagram of cushion collar.

Fig. 8 is the dimensional structure diagram of annular guide channel in frame.

Fig. 9 is the annexation structural representation of frame, blow molding die closing device and rotating disk.

Figure 10 is the annexation structural representation of blow molding die closing device and rotating disk.

In figure, 1, frame；1a, left frame；1b, correct frame；1c, annular guide channel；1c1, straightway；1c2, arc section；2、 Rotating disk；2a, guide groove；3rd, blow molding die closing device；3a, guide rod；3b, mold mounting plate；3c, gear；3d, rack；3e, oil Cylinder；3e1, cylinder body；3e2, piston rod；3e3, cushion collar；3e4, throttle orifice；3e5, buffering stem；3e6, hydraulic fluid port；3f, mounting seat； 3g, weight linear meter；4th, blow molding die；5th, sliding part；6th, extruding machine；6a, extruder head.

Embodiment

It is specific embodiment of the utility model and with reference to accompanying drawing below, the technical solution of the utility model is made further Description, but the utility model is not limited to these embodiments.

As shown in Figures 1 to 10, this blow moulding machine includes frame 1, rotating disk 2 and multigroup blow molding die closing device 3.

Frame 1 can be placed on ground.Rotating disk 2 is vertically arranged, and frame 1 includes left frame 1a and correct frame 1b, the He of rotating disk 2 Multigroup blow molding die closing device 3 between left frame 1a and correct frame 1b, the both ends of rotating disk 2 respectively with left frame 1a and right frame It is rotatablely connected between frame 1b by bearing, passes through one group of guiding between one end of multigroup blow molding die closing device 3 and left frame 1a The annular guide frame of trajectory in a ring is connected；Between the other end and correct frame 1b of multigroup blow molding die closing device 3 It is connected by the annular guide frame of one group of guided way trace in a ring.Rotating disk 2 includes left disk body and right disk body, multigroup blowing By that can move RADIAL of the blow molding die closing device 3 along rotating disk 2 between the one end of mould closing device 3 and left disk body Radially-directed structure be connected；Also by that can make to blow between the other end of multigroup blow molding die closing device 3 and right disk body The radially-directed structure that RADIAL of the mold closing device 3 along rotating disk 2 moves is connected.The arrangement both effectively improved Blow moulding machine entire firmness, rotating disk 2 and the kinetic stability of blow molding die closing device 3 are effectively improved again.Meanwhile the arrangement Make to produce certain space between left disk body and right disk body, the control unit available for arrangement blow molding die closing device 3.

As shown in Figures 2 to 7, blow molding die closing device 3 includes guide rod 3a, mold mounting plate 3b, synchromesh gear rack machine Structure and oil cylinder 3e.

Two pieces of mold mounting plate 3b are be arranged in parallel, and mold mounting plate 3b is vertically arranged with guide rod 3a.Guide rod 3a passes through mould Installing plate 3b, guide rod 3a quantity are two, and two guide rod 3a be arranged in parallel；Pass through multiple mounting seat 3f between two guide rod 3a It is fixedly connected；Two pieces of mold mounting plate 3b can be slided stably relative to guide rod 3a.

Between two guide rod 3a, oil cylinder 3e piston rod 3e2's oil cylinder 3e and guide rod 3a be arranged in parallel.Oil cylinder 3e cylinder Body 3e1 is located therein one piece of mold mounting plate 3b side, and oil cylinder 3e cylinder body 3e1 is fixedly connected with mounting seat 3f；Piston rod 3e2 is fixedly connected through mold mounting plate 3b with another piece of mold mounting plate 3b；The arrangement can reduce blow molding die folding The entire length of device 3, and make the center of gravity of blow molding die closing device 3 closer to guide rod 3a center；And then improve rotating disk 2 and blowing The kinetic stability of mould closing device 3.

Synchromesh gear rackwork includes a gear 3c and two rack 3d being meshed with gear 3c；Gear 3c positions Between two pieces of mold mounting plate 3b, it is rotatablely connected between gear 3c and mounting seat 3f by bearing；Two rack 3d and two pieces Mold mounting plate 3b is fixedly connected correspondingly.

Mold mounting plate 3b one end is used to fix blow molding die 4, and the mold mounting plate 3b other end is fixed with weight linear meter 3g. Blow molding die 4 includes left half module and right half module, and left half module and right half module are separately fixed on two pieces of mold mounting plate 3b；Blow molding die 4 Positioned at guide rod 3a side, weight linear meter 3g and synchromesh gear rackwork are located at guide rod 3a opposite side；The arrangement makes to blow The center of gravity of mold closing device 3 is closer to guide rod 3a center；And then improve rotating disk 2 and the motion stabilization of blow molding die closing device 3 Property.Meanwhile by adjusting weight linear meter 3g position, when blow molding die 4 is in matched moulds state, two weight linear meter 3g end face is just Lean；In other words, weight linear meter 3g also has auxiliary stopper effect, the plastics for avoiding matched moulds from making blow molding die 4 extrude extruding machine 6 Embryo is broken.

Inner chamber one end is provided with cushion collar 3e3, the medial surface of cushion collar 3e3 one end and inner chamber in oil cylinder 3e in oil cylinder 3e It is tightly connected, inner chamber face seal is fixedly connected in cushion collar 3e3 other end oil cylinder 3e；A hydraulic fluid port 3e6 in oil cylinder 3e Chamber is connected between the medial surface of inner chamber in cushion collar 3e3 lateral surfaces and oil cylinder 3e, and edge is provided with cushion collar 3e3 side wall Multiple throttle orifice 3e4 that cushion collar 3e3 shaft core line direction is set, multiple throttle orifice 3e4 cross-sectional area are from cushion collar 3e3 One end be gradually reduced to another extreme direction.Oil cylinder 3e includes piston seat, and one end of piston seat has and can penetrated in cushion collar 3e3 Buffering stem 3e5；Stem 3e5 is buffered when blow molding die closing device 3 is in matched moulds state to be located in cushion collar 3e3.

As shown in Fig. 1, Fig. 8 to Figure 10, Figure of description, which provides this blow moulding machine, includes 12 groups of blow molding die closing devices 3；Root It is suitable for increasing or decreasing surely according to the quantity for being actually needed blow molding die closing device 3.Multigroup blow molding die closing device 3 around turn The shaft core line of disk 2 is circumferentially distributed.Radially-directed structure includes being opened in guide groove 2a on rotating disk 2, guide groove 2a quantity with The quantity of blow molding die closing device 3 is identical, and RADIALs of the guide groove 2a along rotating disk 2 is set, and sliding part is provided with guide groove 2a 5；Sliding part 5 swings and is connected correspondingly with the mounting seat 3f in blow molding die closing device 3.

Annular guide frame includes the annular guide channel 1c in frame 1, i.e. is respectively provided with left frame 1a and correct frame 1b One annular guide channel 1c；The guide rod 3a one ends of all blow molding die closing devices 3 are penetrated in an annular guide channel 1c；In order to carry Height slides flexibility, and rolling member can be set in guide rod 3a end.The structure has simple in construction and motion flexibly stable advantage.

There is one section of straightway 1c1, remaining is arc section 1c2 in annular guide channel 1c.Figure of description provides plastics embryo and squeezed Go out the front side that machine also is located at blow moulding machine, then straightway 1c1 is located at the front side portion of blow moulding machine, and straightway 1c1 opens multiple blow molding dies Attach together and put 3 linear motions, and then for ensureing that plastics embryo and the center line of blow molding die 4 overlap, improve product quality and qualification rate.

By illustrating that continuously making container using plastics embryo extruder and this blow moulding machine further illustrates the folding of this blow molding die The principle of device 3 and blow moulding machine, and effect and the advantage of all parts：With container match blow molding die 4 left half module and the right side Half module is separately fixed on two pieces of mold mounting plate 3b；In other words, a pair is respectively and fixedly provided with each group of blow molding die closing device 3 to blow Mold 4.

Rotating disk 2 is connected with actuator；Actuator drives rotating disk 2 continuous and stable evenly along shown in Fig. 1 arrows Direction rotates.Rotating disk 2 forces blow molding die closing device 3 to be moved along annular guide channel 1c, and radially-directed structure both enables blow molding die Closing device 3 moves along arc section 1c2, also blow molding die closing device 3 can be made to be moved along straightway 1c1；Blow molding die folding Device 3 moves from bottom to top in straightway 1c1.There is multigroup blow molding die closing device 3 simultaneously in straightway 1c1, positioned at straight The adjacent spacing of blow molding die closing device 3 in line segment 1c1 is less than adjacent of blow molding die closing device 3 being located in arc section 1c2 Away from.

Blow molding die closing device 3 on straightway 1c1 is located at the top of extruder head 6a in plastics embryo extruder.In order to It to be easy to describe, the blow molding die closing device 3 that definition is located at the top in straightway 1c1 is the first station blow molding die closing device 3, Blow molding die 4 in the first station blow molding die closing device 3 is the first station blow molding die 4；It is most lower in straightway 1c1 The blow molding die closing device 3 of side is 3rd station blow molding die closing device 3, in 3rd station blow molding die closing device 3 Blow molding die 4 be 3rd station blow molding die 4；Filled positioned at the first station blow molding die closing device 3 and the folding of 3rd station blow molding die It is second station blow molding die closing device 3 to put the blow molding die closing device 3 between 3, is filled installed in the folding of second station blow molding die It is second station blow molding die 4 to put the blow molding die 4 in 3.

Each blow molding die closing device 3 can independent operation, the first station blow molding die 4 and second station blow molding die 4, which are in, to be closed Mould state, during 3rd station blow molding die 4 is in from die sinking to matched moulds, thus plastics indusium is drawn straight up, Jin Erneng Ensure that plastics embryo overlaps with the center line of 3rd station blow molding die 4, and then improve the quality and qualification rate of product.

Product can complete blow molding in the first station blow molding die closing device 3；Along the direction of rotation of rotating disk 2, from One station to 3rd station, blow molding die 4 carries out cooling procedure successively, from matched moulds to die sinking process and from die sinking to matched moulds process. Blow molding die 4 is set to be in die opening state positioned at the blow molding die closing device 3 of bottom, such product can be easier under gravity The demoulding.

Because the adjacent spacing of blow molding die closing device 3 in straightway 1c1 is smaller, thus caused waste material also compared with It is few.Due to two neighboring blow molding die closing device 3, from straightway 1c1 to arc section 1c2, spacing increases again, and then makes positioned at adjacent Plastics indusium between blow molding die closing device 3 is pulled out and is broken, and is achieved in product stripping one by one.

During from 3rd station to second station, oil cylinder 3e buffering stem 3e5 is penetrated in cushion collar 3e3, piston rod 3e2 movement velocity is gradually reduced, until completing matched moulds；Which matched moulds can significantly improve product bottom uniformity, bottom envelope Mouth sealing qualification rate and reduction noise.Gradual from matched moulds to the starting stage of die sinking process, oil cylinder 3e buffering stem 3e5 Cushion collar 3e3 is skidded off, piston rod 3e2 movement velocity gradually steps up, and then significantly decreases product and deformed during die sinking Or tear probability.Remaining period uniform motion of oil cylinder 3e, is effectively ensured open mold efficiency.

Embodiment two

The present embodiment is essentially identical with the structure and principle of embodiment one, the no longer burden description of essentially identical part, only retouches Different place is stated, different place is：Rotating disk 2 is horizontally disposed.

Embodiment three

The present embodiment is essentially identical with the structure and principle of embodiment one, the no longer burden description of essentially identical part, only retouches Different place is stated, different place is：Oil cylinder 3e cylinder body 3e1 and one of mold mounting plate 3b, which is fixed, to be connected Connect, piston rod 3e2 is fixedly connected with another piece of mold mounting plate 3b.

Example IV

The present embodiment is essentially identical with the structure and principle of embodiment one, the no longer burden description of essentially identical part, only retouches Different place is stated, different place is：Radially-directed structure includes being fixed on the upper guide post of rotating disk 2, the axle center of guide pillar Line overlaps with the RADIAL of rotating disk 2, and the quantity of guide pillar is identical with the quantity of blow molding die closing device 3, and sliding sleeve is arranged with guide pillar, Sliding sleeve is rotatablely connected correspondingly with the mounting seat 3f in blow molding die closing device 3.

Claims (10)

1. a kind of blow molding die closing device, including guide rod (3a) and two pieces of relative mold mounting plates (3b) be arrangeding in parallel；Two pieces Mold mounting plate (3b) is slidably connected with guide rod (3a), and mounting seat (3f) is fixedly connected with guide rod (3a)；Characterized in that, This blow molding die closing device also includes oil cylinder (3e) and synchromesh gear rackwork；Synchromesh gear rackwork has a gear (3c) and two racks (3d) being meshed with gear (3c), a pair of two racks (3d) and two pieces of mold mounting plates (3b) 1 It is fixedly connected with answering, gear (3c) is rotatablely connected with mounting seat (3f)；The cylinder body (3e1) of oil cylinder (3e) is pacified with one of mould Loading board (3b) is fixedly connected, and piston rod (3e2) is fixedly connected with another piece of mold mounting plate (3b), or the cylinder body of oil cylinder (3e) (3e1) is fixedly connected with mounting seat (3f), and piston rod (3e2) is fixedly connected with one of mold mounting plate (3b).

2. blow molding die closing device according to claim 1, it is characterised in that the oil cylinder (3e) includes piston seat, oil Inner chamber one end is provided with cushion collar (3e3) in cylinder (3e), and the medial surface of one end and inner chamber in oil cylinder (3e) of cushion collar (3e3) is close Envelope is connected, and inner chamber face seal is fixedly connected in the other end oil cylinder (3e) of cushion collar (3e3)；A hydraulic fluid port in oil cylinder (3e) Chamber is connected between (3e6) and the medial surface of inner chamber in cushion collar (3e3) lateral surface and oil cylinder (3e), cushion collar (3e3) Multiple throttle orifices (3e4) along the shaft core line direction setting of cushion collar (3e3) are provided with side wall, one end of piston seat has and can worn Enter the buffering stem (3e5) in cushion collar (3e3)；Stem (3e5) is buffered when blow molding die closing device (3) is in matched moulds state In cushion collar (3e3).

3. blow molding die closing device according to claim 2, it is characterised in that multiple throttle orifices (3e4) it is transversal Face area gradually subtracts from one end of cushion collar (3e3) to another extreme direction.

4. blow molding die closing device according to claim 1, it is characterised in that the quantity of the guide rod (3a) is two, Two guide rods (3a) be arranged in parallel；It is fixedly connected between two guide rods (3a) by multiple mounting seats (3f).

5. blow molding die closing device according to claim 4, it is characterised in that the oil cylinder (3e) is located at two guide rods Between (3a), piston rod (3e2) and the guide rod (3a) of oil cylinder (3e) be arranged in parallel.

6. blow molding die closing device according to claim 1, it is characterised in that the gear (3c) is pacified positioned at two pieces of moulds Between loading board (3b).

7. blow molding die closing device as claimed in any of claims 1 to 6, it is characterised in that the mould installion One end of plate (3b) is used to fix blow molding die (4), and the other end of every piece of mold mounting plate (3b) is respectively and fixedly provided with weight linear meter (3g).

8. blow molding die closing device according to claim 7, it is characterised in that one end position of the mold mounting plate (3b) In guide rod (3a) side, weight linear meter (3g) and synchromesh gear rackwork are located at the opposite side of guide rod (3a).

9. blow molding die closing device according to claim 7, it is characterised in that be fixed with the mold mounting plate (3b) Blow molding die (4), and when blow molding die (4) is in matched moulds state, the end face of two weight linear meters (3g) leans.

10. a kind of blow moulding machine, including frame (1), it is characterised in that this blow moulding machine also includes rotating disk (2) and multigroup claim 2 To 9 any described blow molding die closing devices (3), rotating disk (2) is rotatablely connected with frame (1), multigroup blow molding die closing device (3) Shaft core line around rotating disk (2) is circumferentially distributed, by that can make blowing between multigroup blow molding die closing device (3) and rotating disk (2) The radially-directed structure of RADIAL movement of the mould closing device (3) along rotating disk (2) is connected；Multigroup blow molding die closing device (3) it is connected between frame (1) by the annular guide frame of one group of guided way trace in a ring；Have in guided way trace Straightway (1c1).