CN2260698Y

CN2260698Y - Quick mould-opening-closing device for blow-moulding machine

Info

Publication number: CN2260698Y
Application number: CN 95244937
Authority: CN
Inventors: 张金山; 陈长泉
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-10-27
Filing date: 1995-10-27
Publication date: 1997-08-27
Anticipated expiration: 2005-10-27

Abstract

The utility model relates to a quick mould opening-closing device for a two-step blow moulding machine, comprising a horizontal annular motion track 8, a dynamic force transmission mechanism 9 which drives a half mould connecting seat 6 to do an annular uniform speed circulating motion along the horizontal annular motion track 8, a horizontal plate type cam 13 which drives two half moulds 10 to rotate along a hinge fulcrum 14, and a cylindrical cam 17 which drives a mould locking pin 15 to move along the axial direction and locks or opens a blow moulding mould 2. A cam mechanism is used for driving the two half moulds 10 to open, close and lock. The utility model is provided with only one dynamic force transmission mechanism 9 which dose a horizontal annular motion. The structure is simple and reliable, and the motion is fast and reliable.

Description

The quickly opening and closing die device that is used for blow moulding machine

The utility model relates to a kind of quickly opening and closing die device that is used for the two step method blow molding machine, it has the blow molding die that is divided into two half module tools, mold halves is installed on the Connection Block, make the horizontal annular uniform motion, by unlatching, closure and the locking of rack-mounted disc cam and cylindrical cam, driving mold halves.

Chinese patent (88106367.3 open day 890329) disclosed a kind of the equipment of the blow moulding machine mould of closed blowing thermoplastic hollow bodies " accurately and apace open and ", its formation is: " make half module tool and support fulcrum and connecting rod point of rotation constitute the kinematic link of one four jointed gear unit together; the transmission pivoted lever of four jointed gear units is made of the cylinder with outer surface curve shape groove, handles the cylinder interlocking of roller with the band curved groove of sliding part; The support fulcrum of four jointed gear units is directly arranged in the binding end of mold halves, and coincides with the point of rotation of half module tool." its weak point is: (1) each blow mold all needs a hydraulic cylinder to drive its die sinking and matched moulds; hydraulic cylinder is installed on the wind wheel; and rotate with wind wheel; provide the hydraulic power unit of hydraulic cylinder power source then to be mounted in fixing frame; one moving one is quiet; give to connect and sealing brings certain difficulty, if any leaking the pollution that will cause working environment.(2) active force and the cam contour by hydraulic cylinder comes locked mode after the mold halves closure, produces the mould phenomenon that rises at the faying face of mold halves easily for high pressure blowing.

The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, and a kind of simple in structure, reliable in action is provided, and can open fast, closed and lock the folding mould device of blow mold.

Another purpose of the present utility model is to reduce the actuating unit coupling as far as possible, reduces manufacturing cost, improves the reliability of clasp mould mechanism.

The purpose of this utility model is realized by following technical proposal.Quickly opening and closing die device of the present utility model, comprise that is used for driving a power drive mechanism and the corresponding annular track that half module tool Connection Block is done circulatory motion, in the disc cam groove that the leg of mold halves is isometric, the bearing of leg end portions is inlaid in level, constitute an isoceles triangle shape by the hinged point of mold halves and the bearing centre line of two foots.The locked mode pin have guide post and drive is installed on the half module tool therein, in the process of half module tool annular movement, is driven unlatching, closure of mold halves and lock by the effect of the cylindrical cam of the disc cam of horizontal direction and vertical direction.Power drive mechanism comprises that belt transmission and disk drive two kinds of structures, for tape handler, consider that the moment of flexure that the deadweight of half module tool Connection Block is produced acts on power transmission belt, therefore, the circular orbit of level and disc cam adopt upper and lower double-layer structure to seem more reasonable.

Description of drawings is as follows:

Fig. 1 is the schematic diagram that the utility model folding mould device is arranged at blow molding machine.(embodiment one)

Fig. 2 is the structural representation that is rotarily formed mold halves unlatching and closure by the disc cam groove driving mold halves of horizontal direction around its hinged point.

Fig. 3 is the structural representation that forms the mold halves locking by the cylindrical cam groove driving locked mode bearing pin of vertical direction to displacement.

Fig. 4 is that half module tool Connection Block is installed in the cross-sectional view on the ring-shaped guide rail.

Fig. 5, Fig. 6 are the schematic diagrames that the utility model adopts disk driving and the upper and lower two-layer horizontally disposed structure of disc cam.(embodiment two)

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

Accompanying drawing 1 has been represented the deployment scenarios of quickly opening and closing die device on blow molding machine, hot pipe through heating is sent into blow molding die 2 by pipe conveying mechanism 1, the movement locus at the movement locus of its tong arm 3 and blow molding die 2 die cavity centers is tangent, angle between each tong arm is suitable mutually with the spacing of each blow molding die 2, after turning over a five equilibrium angle, be admitted to the die cavity center of blow molding die 2 with the pipe that guarantees each tong arm 3 clamping.Blow molding machine by the conveying mechanism pipe of packing into, carries out mould locking at position B at position A, and blow molding die 2 one edge circular orbits motions are Yi Bian carry out stretch-blow.The C clamping mechanism unclamps in the position, and D blow mold mold halves is opened in the position, takes out finished product by shedding mechanism 4, and is transported to finished product arrange agencie 5.Carry out next feeding, stretching, blowing manufactured goods, discharging working cycles then, be understood that the tong arm 3 of shedding mechanism 5 ' the five equilibrium angle, the length of tong arm, the coupling of tact of motion and frame for movement and conveying mechanism 1 have similitude.

Fig. 2-Fig. 4 understands the structure of quickly opening and closing die device specifically.

Half module tool Connection Block 6 be bearing on the fixing circular orbit 8 by one group of bearing 7 and with the driving-belt 9 of power drive mechanism 9 ' be connected, carry out circulatory motion synchronously along track 8.The leg 11 of mold halves 10 is isometric, and the bearing 12 of two leg end portions is inlaid in disc cam 13 grooves of level.Line by the hinged point 14 of mold halves and bearing 12,12 ' center constitutes an isoceles triangle shape.Its angle is β (being equivalent to Fig. 1 position D).Half module tool Connection Block 6 be subjected to driving-belt 9 ' traction, move along circular orbit 8, leg 11 bearing at end 12 enter the II section from the I section of horizontal disc cam 13, mold halves 10 is rotated the mould closure around the hinged point 14 of Connection Block 6.This moment, hinged point 14 was α (the position A that is equivalent to Fig. 1) with the angle of bearing 12, isosceles triangle that 12 ' line of centres constituted.

Half module tool Connection Block 6 continues to move along circular orbit 8, the drive 16 that is provided with on the locked mode pin 15 is had an effect with the cylindrical cam of arranging along track 8 17, make the locked mode pin 15 that is installed in one of them half module tool pin-and-hole 18 produce axial displacement (to top offset one segment distance, locked mode pin 15 inserts in the pin-and-hole of another half module tool), locking blow mold 2, (the B position that is equivalent to Fig. 1).Pipe drawn in blow mold 2, after the blow molding, half module tool Connection Block 6 moves to the C position of Fig. 1, equally by 15 axial displacements of cylindrical cam 17 ' drive pin mould pin, and (with Figure 1B position-reversed to bottom offset one segment distance), unclamp blow mold 2.Open mold halves 10 by the profile varying (entering the I section by the II section) of disc cam 13 then, this moment, the angle of isosceles triangle was β.This shows, be subjected to power transmission belt 9 ' traction, its mold halves 10 is promptly opened and the closed profile variations that depends on the disc cam 13 of horizontal level, (I section → II → I section) around the revolution of its hinged point 14.The locking of mold halves 10 is the axial shift reciprocately of locked mode pin 15 with unclamping, and depends on the profile variations of cylindrical cam 17 vertical direction.

In the present embodiment, half module tool Connection Block 6 is bearing in frame mode on the fixing circular orbit 8 by one group of bearing 7, adopted parallel upper and lower two-layer circular orbit 8 ' and 8 ", the bearing 7 of corresponding supporting Connection Block 6 cantilevered weights adopts the both direction of axis horizontal and axis normal spacing.Corresponding disc cam 13 have the upper and lower two-layer cam path 13 of level ' and 13 " two legs, 11 bearing at end 12 and 12 ' difference embedding commentaries on classics upper and lower two-layer cam path 13 and 13 ' in.

Well imagine that the relative folding mould device of present embodiment be inlaid in all right roller structure of structure in circular orbit 8 and the disc cam groove except adopting bearing, but rolling friction is proved to be the most rational.

For driving the power drive mechanism driving-belt that blow mold moves along circular orbit 8, except the flat belt structure that present embodiment provides, can also adopt track structure, or chain structure, but because flat belt is because need not to lubricate, the transmission noise is little, seems more suitable.

Fig. 5, Fig. 6 have described and have adopted disk to drive and the upper and lower two-layer horizontally disposed version of disc cam (embodiment two).

Half module tool Connection Block 6 by branches such as circumference be installed in power drive mechanism 9 driver plate 9 " go up and with this driver plate 9 " make uniform circular motion.Blow mold 2 still just drives unlatching, closure of mold halves 10 by rack-mounted disc cam 19 and cylindrical cam 17 and locks obviously.Mold halves 10 legs, 11 bearing at end 12 and 12 ' respectively are inlaid in up and down two-layer disc cam 19 ' and 19 " in the groove.

For all embodiment of the present utility model, any is arranged is common.Promptly must make half module tool Connection Block 6 make the horizontal annular uniform motion and have corresponding power drive mechanism, the leg 11 of mold halves 10 is isometric, two legs, 11 bearing at end 12,12 ' be inlaid in disc cam 13 grooves, and constitute an isoceles triangle shape with the hinged point 14 of mold halves, by the disc cam of horizontal direction and the cylindrical cam effect of vertical direction, order about unclamping, locking of mold halves unlatching, closure and locked mode pin.

The utility model compared with prior art has following advantage:

1, simple in structure, can fast open open and close by dish type cam and cylinder cam and to close The locking blow mold.

2, reliable in action utilizes triangle mechanism and lock mould lock to decide blow mold, is blowing Mould Shi Buhui and produce " mould rises " phenomenon.

3, power drive mechanism adopts band or chain transmission, has overcome because of hydraulic cylinder sealing lost efficacy, and produces to leak the phenomenon of operating environment of pollution.

4, owing to reduced the coupling of actuating unit as much as possible, the manufacturing cost of blow moulding machine decreases.

Claims

1, a kind of quickly opening and closing die device that is used for the two step method blow moulding machine, comprise power drive mechanism, the blow molding die that is divided into two half module tools, the half module tool is installed on the Connection Block, and can turn round by the hinged point on Connection Block, it is characterized in that: half module tool Connection Block (6) is connected with power drive mechanism (9) and carries out at the uniform velocity the horizontal annular motion synchronously, the leg (11) of mold halves (10) is isometric, two legs (11) bearing at end (12) (12 ') are inlaid in the disc cam (13 of level, 19) in, the hinged point (14) of mold halves and bearing (12), the line at (12 ') center constitutes an isoceles triangle shape, locked mode pin (15) is installed in the pin-and-hole (18) of one of them half module tool (10), locked mode pin (15) is provided with drive (16), in the process that half module tool (10) moves as horizontal annular, drive (16) is at disc cam (13, under the effect of the cylindrical cam of vertically arranging 19) (17), order about locked mode pin (15) and move vertically, locking or unlatching blow mold (6).

2, quickly opening and closing die device as claimed in claim 1, it is characterized in that: be used for driving mold halves (10) and move around the rotating disc cam of hinged point (14) (13,19) at it, upper and lower two-layer cam path (13 ', 19 ') and (13 ", 19 ") with level, two legs (11) bearing at end (12) and (12 ') are inlaid in respectively in upper and lower two-layer cam path (13 ', 19 ') and (13 ", 19 ").

3, quickly opening and closing die device as claimed in claim 1 is characterized in that: the circular orbit (8) that is used to support half module tool Connection Block (6) has upper strata track (8 ') and lower floor's track (8 "), two-layer track (8 '), (the transmission plane parallel of 8 ").

4, quickly opening and closing die device as claimed in claim 1 or 2 is characterized in that: be used to support half module tool Connection Block 6 along track (8 ') with (the 8 ") bearing group (7) of doing circulatory motion adopts axis horizontal and axis normal both direction spacing.