CN1335219A

CN1335219A - Conveying mechanism for bottle blow molding machine

Info

Publication number: CN1335219A
Application number: CN 00121482
Authority: CN
Inventors: 徐光中
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-07-25
Filing date: 2000-07-25
Publication date: 2002-02-13

Abstract

The conveying mechanism for bottle blow molding machine consists of driving chain wheel, driven chain wheel, developing chain wheel, compressing chain wheel, conveying chain with holder, main power source to drive the driving chain wheel the driven chain wheel, and compressing power source to drive developing chain wheel and compressing chain wheel. It features that there are intermediate chain sections with long connecting pin between adjacent holders; retainer and tracks fixed on the frame and acting with the long connecting pin to bend the chain; and rollers of holder on the tracks. Bending the chain to shorten the interval between the holders can save power for the heater.

Description

The conveying device of bottle blowing machine

The present invention relates to the moulding of plastics, particularly make the device of hollow plastic container.

Existing device with stretch blow manufactured hollow plastic container, once can stretch blow 1 to several plastic bottles, on shaped device, parison is at each operation (material loading for example, heating, stretch blow, the blanking operation) conveying between is finished by chain, be fixed with clamper on the chain, be placed with parison on the clamper, chain is walked and parison is delivered to each operation, because clamper is to be fixed on the chain, its mutual spacing is equal and fixing, and bottle diameter is far longer than the size of parison when bottle blowing, therefore the spacing of clamper just can only be by the size arrangement of the bottle after the moulding, and parison in bringing-up section because spacing is bigger, therefore make the heater length increasing, and cause the waste of the energy, make that also whole table apparatus size is huge.

The purpose of this invention is to provide that a kind of mutual spacing of clamper can change, but energy savings is simple in structure, cost is low, the conveying device of reliable bottle blowing machine.

The objective of the invention is to realize by following technical scheme, the conveying device of this bottle blowing machine, has frame, rotating driving shaft on frame, driven shaft, axis of dilatation, compressional axis, drive sprocket is arranged on the driving shaft, driven sprocket is arranged on the driven shaft, the expansion sprocket wheel is arranged on the axis of dilatation, the compression sprocket wheel is arranged on the compressional axis, be around in the chain outside above-mentioned four sprocket wheels, be fixed with clamper on the chain, drive the main power source that driving shaft and driven shaft rotate, drive the compression power source that compressional axis and axis of dilatation rotate, it is characterized in that said chain has chain link, clamper is fixed on the chain link, 3 or 5 chain links are arranged between two adjacent clampers, the long connecting pin of the connecting pin at chain link two ends for stretching out downwards in the middle of it, at drive sprocket, the compression sprocket wheel, the chain below that goes out the chain side of launching sprocket wheel is fixed with the baffle plate that acts on mutually with long connecting pin that can make the chain bending, at the compression sprocket wheel, launch sprocket wheel, the chain below of advancing the chain side of driven sprocket be fixed with make chain stretching with return plate long connecting pin effect, below each clamper, have internal trolley and outside roller, in on frame, being fixed with, inner orbit and outside track that outer roller rolls thereon and walks, have on the inner orbit with clamper on the rib that acts on mutually of the roller of chain, the stop that acts on mutually with rib is arranged on the clamper, in that the same speed driving mechanism that diaxon is rotated with speed is arranged between driving shaft and driven shaft and between compressional axis and axis of dilatation, between drive sprocket and driving shaft, governor motion is arranged.

The conveying device of bottle blowing machine of the present invention, its chain is when operation, long connecting pin is subjected to the control of baffle plate and return plate to make that the chain between two clampers can be crooked or folding, and clamper is walked in orbit, route is accurate, when between drive sprocket and driven sprocket, chain is stretching and intermittently advance, therefore the clamper spacing is a normal separation, can carry out the matched moulds moulding, and when compressing sprocket wheel and launch between sprocket wheel, chain between two clampers is crooked or folding mutually, therefore clamper can be abutted against mutually, makes the pitch smaller between clamper, and therefore the clamper distance is little in heater, can shorten the length and the energy savings of heater, can reduce the size of full device, and simple in structure, and cost is low.

Be explained in detail below in conjunction with the conveying device of drawings and Examples bottle blowing machine of the present invention.

Fig. 1 is the top view structural representation of the defeated pass device of bottle blowing machine of the present invention;

Fig. 2 is that the conveying device of bottle blowing machine of the present invention is analysed and observe the structure for amplifying schematic diagram along a kind of embodiment of A-A face among Fig. 1;

Fig. 3 is that the conveying device of bottle blowing machine of the present invention is analysed and observe the structure for amplifying schematic diagram along the another kind of embodiment of A-A face among Fig. 1;

Fig. 4 is that the conveying device of bottle blowing machine of the present invention is analysed and observe the structure for amplifying schematic diagram along B-B face among Fig. 1;

Fig. 5 be bottle blowing machine of the present invention conveying device along D among Fig. 4 to structural representation;

Fig. 6 is that the conveying device of bottle blowing machine of the present invention is analysed and observe the structure for amplifying schematic diagram along C-C face among Fig. 1;

Fig. 7 is that the conveying device of bottle blowing machine of the present invention is analysed and observe the structure for amplifying schematic diagram along F-F face among Fig. 1;

Fig. 8 be bottle blowing machine of the present invention conveying device along G among Fig. 7 to analyse and observe the structure for amplifying schematic diagram.

As Fig. 1,4,6, the conveying device of this bottle blowing machine has frame 5, the rotating drive sprocket 6 that is equipped with on driving shaft 7 and the axle on the frame 5, driven sprocket 20 on driven shaft 22 and the axle, expansion sprocket wheel 26 on axis of dilatation 25 and the axle, compression sprocket wheel 32 on compressional axis 31 and the axle, the outside of four sprocket wheels is around chain 10 is arranged, at drive sprocket 6 and 20 of driven sprockets is profiled section 3 and unloading part 4,32 places are material loading section 1 at the compression sprocket wheel, compression sprocket wheel 32 and 26 on sprocket wheel of expansion are bringing-up section 2, at driving

shaft

7 and 22 of driven shafts the same speed driving mechanism 9 that diaxon is rotated with speed is housed, main power source 36 (stepper motor for example, frequency control motor, servomotor, also available common electric machine adds location mechanism) link to each other with driving shaft and make drive sprocket 6 and driven sprocket 20 with fast intermittent movement to finish the work of matched moulds bottle blowing, at compressional axis 31 and 25 of axiss of dilatation the synchronous drive mechanism 9 that diaxon is rotated with speed is housed also, compression power source 35 (being generally motor) links to each other with compressional axis 31 and makes compressional axis and the axis of dilatation constant speed rotation drive sprocket 6 and the driven sprocket 20 same numbers of teeth, launch the sprocket wheel 26 and the compression sprocket wheel 32 same numbers of teeth, the equidistant clamper 13 that is fixed with on the chain 10, clamper 13 should have suitable width and can be abutted against mutually with crooked two clampers of box lunch chain when the bringing-up section 2 and advance, clamper can be directly connected on the special carrier bar, also available plate is connected on the carrier bar with the side that stretches out, a chain link is arranged on the

clamper

13, and 3 or 5 chain links can be arranged between two clampers, for example the structure when three chain links is shown in Fig. 2, a middle shot 16 and two inner plates 17 are arranged between clamper, two connecting pins at the two ends of middle shot 16 are long connecting pin 15, it is by stretching out a segment length on the chain downwards to act on baffle plate 24 or return plate 23 and to make chain crooked and folding, structure as five chain links is shown in Fig. 3, two connecting pins 15 at the two ends of middle shot 16 are long connecting pin 15, roller 40 (or rolling bearing) can be housed with the friction of minimizing with baffle plate on the external part of long connecting pin 15.On frame, be fixed with inner orbit 39 and outside track 37, the circuit that they are walked according to clamper is arranged, the lower end of each clamper 13 body be equipped with internal trolley 12 and outside roller 14, in can being, each two on outer roller or two outer rollers of internal trolley are 1, roller is interior, outside track 39, roll on 37 the plane and the normal walking of clamper can not be tilted, for preventing clamper moving on horizontal (perpendicular to the direction of clamper running route), the rib 42 (referring to Fig. 4) that inner orbit 39 also has upwardly extending vertical edges and extends to horizontal direction on vertical edges, the roller of the chain link on one side of rib 42 and the clamper is abutted against mutually, the opposite side of rib then with clamper on stop be abutted against mutually, for example be fixed in clamper on horizontal roller 18 be abutted against mutually, or with the clamper body on the limited block 51 (referring to Fig. 6) that stretches out be abutted against mutually, therefore having limited clamper 13 can not move laterally, even in the lax situation of chain (as bringing-up section, between drive sprocket and compression sprocket wheel, between compression sprocket wheel and driven sprocket) can randomly not walk roller 12 yet, 14,18 preferably adopt little roller bearing.

At drive sprocket 6, compression sprocket wheel 32, the chain side that goes out of launching sprocket wheel 21 has the baffle plate 24 that is fixed on the frame, and at compression sprocket wheel 32, launch sprocket wheel 26, the chain side of going into of driven sprocket 20 has the return plate 23 that is fixed on the frame, baffle plate 24 has an inclined-plane that is located at the oblique central side of chain 10 normal running route belows, it can contact with the external part of the long connecting pin 15 of chain 10 on normal running route and will long connecting pin 15 groups to the inside, therefore make middle shot 16 between two clampers 13 deflect away from normal route and within track skidding walk, and make chain folding and two distances between the clamper 13 are dwindled, and return plate 23 is to have an inclined-plane by the oblique normal route of central side, it also contact with the long connecting pin 15 of folding chain link 16 below the chain running route chain link of walking in the inboard of normal orbit is back on the normal route and can with sprocket engagement, so the total length of chain 10 should be greater than four tetragonal girths that sprocket wheel supported, institute grows part and is drive sprocket 6 and 32 on sprocket wheel of compression, compression sprocket wheel 32 with launch 26 on sprocket wheel and launch sprocket wheel 26 and the bending of the chain 10 of 20 of driven sprockets with fold required length.

Said synchronous drive mechanism 9 can be bevel gear transmission (as Fig. 1 drive sprocket and a driven sprocket side and shown in Figure 4), also can be chain drive pair (as compression sprocket wheel and the expansion sprocket wheel side and shown in Figure 6 of Fig. 1), between driving shaft and driven shaft, synchronous drive mechanism between compressional axis and axis of dilatation can all be used the bevel gear pair, also can all use the chain drive pair, also can adopt respectively, the synchronous drive mechanism 9 of bevel gear transmission comprises and is fixed in driving shaft 7, driven shaft 22 and/or compressional axis 31, the bevel gear 8 of the identical number of teeth on the axis of dilatation 25, the rotating same speed axle 11 that is fixed on the frame 5, respectively there is one to be fixed in the speed axle and to go up and with the two ends of speed axle 11 with the cone pinion 19 of the number of teeth, cone pinion 19 is meshed with bevel gear 8, therefore can reach driven shaft 22 (or reach axis of dilatation) to the rotation of driving shaft 7 to the rotation of compressional axis, and make the same rotating speed of diaxon, it should be noted that to driving shaft and driven shaft are turned to consistent, bevel gear 8 on the driving shaft and the bevel gear 8 on the driven shaft be (as Fig. 4 and Fig. 7) oppositely, promptly when a bevel gear 8 meshed with cone pinion below cone pinion 19, the bevel gear 8 on another then should mesh with cone pinion above cone pinion 19.The synchronous drive mechanism 9 of chain drive pair comprises and is fixed in compressional axis 31, axis of dilatation 25 and/or driving shaft 7, the sprocket wheel 27 of the identical number of teeth on the driven shaft 22, be around in the chain 29 outside two sprocket wheels 27, also have regulating wheel 28 and stretcher with chain 29 tensionings, so also can make compressional axis drive axis of dilatation (or driving shaft drive driven shaft) constant speed rotates, also be fixed with sprocket wheel or gear 38 on driving shaft or the driven shaft to link to each other with main power source 36, to drive driving shaft 7 and intermittently rotation of driven shaft 22, also be fixed with gear or sprocket wheel 34 on compressional axis or the axis of dilatation to link to each other, rotate to drive compressional axis and axis of dilatation with compression power source 35.For making chain between drive sprocket 6 and the driven sprocket 20 be tension so that when stopping and die cavity position consistency matched moulds smoothly, has guiding mechanism between drive sprocket 6 and the driving shaft 7 to adjust angle position between sprocket wheel 6 and the axle 7, guiding mechanism can adopt as Fig. 4, structure shown in 5, be fixed with bevel gear 8 or sprocket wheel 27 and wheel for inputting 38 on the axle 7, also be fixed with the bearing 49 that is connected with frame 1 on the axle, bevel gear 8 or sprocket wheel 27 are fixing with axle 7, and drive sprocket 6 is rotatably connected with axle 7 and with step 48 location, have mounting hole 43 on the drive sprocket 6, with sprocket wheel 6 is abutted against mutually fixing dish 45 (for example being connected with spools 7 with chain) is housed, has breach 50 on the dish 45, also has screw on the dish, this screw matches with the hold-down screw 44 that passes mounting hole 48, also be fixed with fixed block 46 on the drive sprocket 6, on the fixed block 46 screw is arranged, dog screw 47 passes this screw and withstands on the breach 50 of dish 45, adjust dog screw 47 can adjustment dish 45 and drive sprocket 6 between the angle position, after adjusting hold-down screw 47 is tightened, dish 45 and drive sprocket 6 can be fixed.Main power source 36 can adopt common electric machine, but need detent mechanism, so that parison is parked in accurate position so that matched moulds, as Fig. 7 Fig. 8, on the disk of driving shaft 7 or driven shaft 22, (for example can be the bevel gear 8 on the driven shaft 22, gear 38 on sprocket wheel 27 or the driving shaft 7) positioning roller or bearing 52 are housed, be parked in the position of requirement when parison after, roller 52 also is parked in certain position, on the line of centres at its center and the center of place disk the positioning cylinder 53 that center line overlaps with this line of centres is housed, be fixed with locating piece 54 on the piston rod of cylinder 53, groove 55 that matches with roller 52 and the opening 56 that enlarges are arranged on the locating piece 54, after main power source stops (for example with limit switch etc.), the position that parison stops is inaccurate, this moment, cylinder 53 action piston rods stretched out, the opening 56 that enlarges is with in roller 52 lead-ingrooves 55 and hold out against and disk is accurately located, because locating piece 54 is to push away on roller 52 to radial direction by disc centre, its power is passed through disc centre, so the gap in bearing and the cylinder is less to the influence of position, therefore make the parison accurate positioning, and can reduce cost.

The conveying device of bottle blowing machine of the present invention, chain 10 is as the direction walking of arrow E, chain 10 20 of drive sprocket 6 and driven sprockets is stretching and intermittent movement, can arrange that profiled section 3 carries out the stretch blow bottle, carry out discharging then, compression sprocket wheel 32 and launch 26 on sprocket wheel then clamper be abutted against mutually and chain is crooked or folding, clamper after clamper leans against the preceding pushes and advances, so clamper pitch smaller, and can make the contraction in length of heater 27, save also and can make full use of the energy, drive sprocket 6 is driven by main power source 36, and compression sprocket wheel 32 is driven by compression power source 35, drive sprocket 6 is connected by synchronous drive mechanism 9 with driven sprocket 20 and rotates synchronously, compression sprocket wheel 32 is connected by synchronous drive mechanism 9 with expansion sprocket wheel 26 and rotates synchronously, guarantee the normal operation of chain, at

drive sprocket

6 and 29 on sprocket wheel of compression, launch 17 of sprocket wheel 23 and driven sprockets, chain 10 is relaxed state, and in order to the usefulness of bringing-up section 2 compressions and profiled section 3 expansion, overall process clamper 12 orbits, safe and reliable, simple in structure, main power source can adopt common electric machine and detent mechanism, can reduce cost.

Claims

1, a kind of conveying device of bottle blowing machine, has frame (5), rotating driving shaft (7) on frame, driven shaft (22), axis of dilatation (25), compressional axis (31), drive sprocket (6) is arranged on the driving shaft, driven sprocket (20) is arranged on the driven shaft, expansion sprocket wheel (26) is arranged on the axis of dilatation, compression sprocket wheel (32) is arranged on the compressional axis, be around in above-mentioned four sprocket wheels (6), (20), (26), (32) chain outside (10), be fixed with clamper (13) on the chain, drive the main power source (36) that driving shaft (7) and driven shaft (22) rotate, drive the compression power source (35) that compressional axis (31) and axis of dilatation (25) rotate, it is characterized in that said chain (10) has chain link, clamper (13) is fixed on the chain link, 3 or 5 chain links are arranged between two adjacent clampers, the long connecting pin (15) of the connecting pin at a chain link (16) two ends for stretching out downwards in the middle of it, in drive sprocket (6), compression sprocket wheel (32), the chain below that goes out the chain side of launching sprocket wheel (26) is fixed with the baffle plate (24) that acts on mutually with long connecting pin (15) that can make chain (10) crooked, at compression sprocket wheel (32), launch sprocket wheel (26), the chain below of advancing the chain side of driven sprocket (20) is fixed with the return plate (23) that acts on mutually with long connecting pin (15) that makes chain stretching, each clamper (13) below have internal trolley (12) and outside roller (14), in on frame, being fixed with, inner orbit (39) and outside track (37) that outer roller (12) (14) rolls thereon and walks, have on the inner orbit (39) with clamper on the rib (42) that acts on mutually of the roller of chain (10), the stop that acts on mutually with rib (42) is arranged on the clamper (13), in that the same speed driving mechanism (9) that diaxon is rotated with speed is arranged between driving shaft (7) and driven shaft (22) and between compressional axis (31) and axis of dilatation (25), between drive sprocket (6) and driving shaft (7), governor motion is arranged.

2, the conveying device of bottle blowing machine as claimed in claim 1, be characterised in that altogether said same speed driving mechanism (9) is the same speed driving mechanism of bevel gear transmission, comprise the bevel gear (8) that is fixed in the identical number of teeth on driving shaft (7), driven shaft (22) and/or compressional axis (31), the axis of dilatation (25), the rotating same speed axle (11) that is fixed on the frame (5) is fixed in the cone pinion (19) with the same number of teeth that is meshed with bevel gear (8) respectively at speed axle two ends.

3, the conveying device of bottle blowing machine as claimed in claim 1, it is characterized in that said same speed driving mechanism (9) is the same speed driving mechanism of chain drive pair, comprise the sprocket wheel (27) that is fixed in the same number of teeth on compressional axis (31), axis of dilatation (25) and/or driving shaft (7), the driven shaft (22), be around in the outer chain (29) of two sprocket wheels, make the stretcher and the regulating wheel (28) of chain (29) tensioning.

4, the conveying device of bottle blowing machine as claimed in claim 1, it is characterized in that the governor motion between said drive sprocket (6) and driving shaft (7) comprises umbrella tooth (8) or the sprocket wheel (27) that is fixed on the driving shaft (7), the rotating drive sprocket (6) that is loaded on the driving shaft (7), be fixed in the fixed block (46) of the band screw on the drive sprocket, adjustment screw (47) on the fixed block (46), mounting hole (43) is arranged on the drive sprocket, be abutted against the dish (45) that is loaded on regularly on the driving shaft mutually with drive sprocket (6), on the dish (45) breach (50) that contacts with adjustment screw (47) is arranged, pass the hold-down screw (44) that mounting hole (43) is threaded with dish (45).

5, the conveying device of bottle blowing machine as claimed in claim 1 is characterized in that the internal trolley (12) of said each clamper (13) below is 2, and outer roller (14) is 1.

6, the conveying device of bottle blowing machine as claimed in claim 1 is characterized in that said stop is for being fixed in the horizontal roller (18) on the clamper (13).

7, the conveying device of bottle blowing machine as claimed in claim 1 is characterized in that said stop is the limited block (51) that stretches out on the clamper body.

8, the conveying device of bottle blowing machine as claimed in claim 1 is characterized in that having roller (40) on the external part of said long connecting pin (15).

9, the conveying device of bottle blowing machine as claimed in claim 1, it is characterized in that said main power source (36) is a common electric machine, also has detent mechanism, comprise the roller (52) on the disk that is fixed in driving shaft (7) or driven shaft (22), on the line of centres at disc centre and roller (52) center the positioning cylinder (53) that center line overlaps with this line of centres is housed, is fixed with the locating piece (54) that holds roller (52) on the piston rod of cylinder (53).