CN102806653A - Blow molding apparatus - Google Patents
Blow molding apparatus Download PDFInfo
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- CN102806653A CN102806653A CN2011102162789A CN201110216278A CN102806653A CN 102806653 A CN102806653 A CN 102806653A CN 2011102162789 A CN2011102162789 A CN 2011102162789A CN 201110216278 A CN201110216278 A CN 201110216278A CN 102806653 A CN102806653 A CN 102806653A
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Abstract
The invention provides small-sized compact blow molding apparatus which has good production efficiency which can perform extending blow molding on a preform with a relatively thick wall at high elongation to manufacture a large-sized bottle. The blow molding apparatus (1) of the invention transports a support (7) on which the preform (2) is mounted in an upside down state along a rectangular circular path (6) constituted by a first straight line transporting path (11), a second straight line transporting path, a third straight line transporting path and a fourth straight line transporting path which are arranged on the same plane. The first straight line transporting path (11) and the second straight line transporting path (12) are provided with a first heating part (17) and a second heating part (18) which perform external heating and inner heating on the preform with a relatively thick wall to heat uniformly. The heated preform (2) is extendedly blow-molded in a first treatment part (19) on the third straight line transporting path (13) to form an intermediate shaped product (4), the intermediate shaped product (4) is extendedly blow-molded in a second treatment part (20) to obtain a finished product, i.e., a bottle (3). By dividing extending blow-molding into two stages, the large-sized bottle (3) can be obtained with no surplus tensile stress left.
Description
Technical field
The present invention relates to a kind of blow molding apparatus, it is that preform heats the large-scale bottle that makes its extending blow moulding make container as drinking water supply place etc. that this blow molding apparatus is applicable to the injection molded article.
Background technology
To the injection molded article that are the test tube shape is that preform (parison) carries out biaxial stretch blow molding and the bottle of the various sizes that obtain is utilized widely.In patent documentation 1, propose to have the twin shaft of small-sized and compact conformation to extend forming machine; This twin shaft extends forming machine to be carried preform and props up seat board along forming close-shaped carrying road, carries out supply, heating, the biaxial stretch blow molding of preform, the recovery action of formed products successively.
In recent years, utilize the container of the bigger bottle of capacity as drinking water supply place etc.For extending blow moulding goes out this large-scale bottle, need to prepare the resin system preform of the thicker test tube shape of wall thickness, and with bigger percentage elongation the stretch body cylindraceous and the bottom of this preform.When the large-scale bottle of extending blow moulding, need be to evenly heating and carry out stretch blow inside and outside the preform of heavy wall.In patent documentation 2, propose to have pair parison to carry out the method that twice stretch blow made tun.Wherein, carry out the twin shaft stretch blow, through primary stretch blow; Parison is become have the to a certain degree preformed articles of size; Through secondary stretch blow, obtaining final products is tun, thereby makes the each several part of parison form suitable wall thickness.
Patent documentation 1:WO98/03324 brochure
Patent documentation 2: japanese patent laid-open 08-90642 communique
Summary of the invention
Do not propose to be used for carrying successively the thicker preform of wall thickness and it is carried out the blow molding apparatus that extending blow moulding makes efficiently the small-sized and compact conformation of large-scale bottle in the past.It can efficiently that wall thickness is thicker preform extending blow moulding be the blow molding apparatus of the small-sized and compact conformation of large-scale bottle that technical problem of the present invention is to provide a kind of.
For solving the problems of the technologies described above, the characteristic of blow molding apparatus of the present invention is to comprise:
Can the injection molded article with body and oral area of bottom tube-like will be arranged is that preform is installed the bearing that becomes to make above-mentioned oral area handstand state down;
Be first straight line carrying road～the 4th straight line carrying road that makes above-mentioned bearing circulation formation at grade rectangle circulation road;
Make above-mentioned bearing carry the carrying mechanism that carry on the road via above-mentioned first straight line carrying road～the 4th straight line successively;
Half-way on above-mentioned first straight line carrying road is installed in above-mentioned preform the throw-in part of above-mentioned bearing;
In above-mentioned first straight line carrying road during the above-mentioned bearing of carrying, first heating part that the above-mentioned preform that is installed in this bearing is heated;
In above-mentioned second straight line carrying road during the above-mentioned bearing of carrying, second heating part that the above-mentioned preform that is installed in this bearing is heated;
Open and close in the mould in first of the half-way that is disposed at above-mentioned the 3rd straight line carrying road, the above-mentioned preform that is installed in above-mentioned bearing is carried out first handling part of first processing;
In the second switching mould of the position of in being disposed at above-mentioned the 3rd straight line carrying road, handling by the position in bearing carrying direction downstream than above-mentioned first handling part, second handling part that the above-mentioned preform that is installed in above-mentioned bearing is carried out second processing; And
Carry the upstream extremity position of direction at the bearing on above-mentioned the 4th straight line carrying road; To carry out above-mentioned first to above-mentioned preform handles and above-mentioned second at least one processing and the final products that obtain in handling are bottle from discharge portion that above-mentioned bearing takes off and discharges
At least one processing during above-mentioned first processing and above-mentioned second is handled is that blow molding processing or extending blow moulding are handled.
In blow molding apparatus of the present invention, preform is transmitted along the rectangle circulation road on the same plane by bearing off and on, and successively via first heating part and second heating part and be heated.Preform after the heating is handled upside down and successively through first handling part and second handling part, and is extended blowing, thereby forms the container of final products.Mode of heating (external heat, inner heating) through setting first heating part and second heating part suitably can evenly heat the thicker preform of wall thickness.In addition; The processing mode (final blow molding shaping) of the processing mode through setting first handling part suitably (change the ground heating, pre-blowing is moulded shape) and second handling part can be carried out blowing suitably or stretch blow by the each several part to the thicker preform of wall thickness on biaxially oriented.
Then, the characteristic of the carrying mechanism of blow molding apparatus of the present invention is to comprise:
The row of the above-mentioned bearing that will on above-mentioned first straight line carrying road, arrange with the state edge above-mentioned bearing carrying direction that is in contact with one another transmit the first bearing release portion that spacing court above-mentioned bearing carrying direction is released off and on to be equivalent to first of a bearing size;
The row of the above-mentioned bearing that will on above-mentioned second straight line carrying road, arrange with the state edge above-mentioned bearing carrying direction that is in contact with one another transmit spacing with above-mentioned first and carry the second bearing release portion that direction is released off and on towards above-mentioned bearing;
On above-mentioned the 3rd straight line carrying road; Each bearing of the second processing position that carries out off and on the first processing position and above-mentioned second that the upstream extremity position, above-mentioned first that is positioned at the above-mentioned bearing that reception releases from above-mentioned second straight line carrying road opens and closes mould is opened and closed mould to be transmitting big second the transmitting spacing and see off of spacing than above-mentioned first, thereby above-mentioned bearing is transplanted on the first bearing handover portion of transfer movement of the above-mentioned upstream extremity position on the above-mentioned first processing position, the above-mentioned second processing position and above-mentioned the 4th straight line carrying road respectively; And
Make the above-mentioned bearing of the above-mentioned upstream extremity position that is positioned at above-mentioned the 4th straight line carrying road be transplanted on the second bearing handover portion of transfer movement of the upstream extremity position on above-mentioned first straight line carrying road via the 4th straight line carrying road off and on.
In addition; In blow molding apparatus of the present invention; For can carry out external heat suitably according to the shape of preform, wall thickness etc., inner heating is carried out the whole even heating of preform efficiently, following structure is adopted in first heating part and second heating part.At first; Above-mentioned first heating part comprise from the outside external heat mechanism that above-mentioned bearing that indexing transfer is come heats and the inside heating arrangements that above-mentioned bearing is heated from the inboard the two; Perhaps include only the said external heating arrangements, perhaps include only above-mentioned inner heating arrangements again.Relative therewith; Comprise under the two the situation of said external heating arrangements and above-mentioned inner heating arrangements in above-mentioned first heating part; Above-mentioned second heating part comprise said external heating arrangements and above-mentioned inner heating arrangements the two; Perhaps include only the said external heating arrangements, include only under the situation of said external heating arrangements in above-mentioned first heating part, above-mentioned second heating part includes only the said external heating arrangements; Perhaps comprise said external heating arrangements and above-mentioned inner heating arrangements the two; Include only under the situation of above-mentioned inner heating arrangements in above-mentioned first heating part, above-mentioned second heating part comprise said external heating arrangements and above-mentioned inner heating arrangements the two, perhaps include only the said external heating arrangements.
As inner heating arrangements; Can use the mechanism that comprises inner heater and elevating mechanism; Wherein, the central through hole that above-mentioned inner heater can pass above-mentioned bearing is inserted into the inside of the above-mentioned preform that is installed in this bearing, and above-mentioned elevating mechanism goes up and down this inside heater.At this moment; When the next above-mentioned bearing of indexing transfer temporarily stops; Above-mentioned inner heater is risen; Above-mentioned inner heater is inserted in the above-mentioned preform that is installed in above-mentioned bearing, thereby heats, and above-mentioned inner heater decline is got final product from the inboard to this preform.
At this moment; If the spacing with identical with the indexing transfer spacing of above-mentioned bearing is arranged many above-mentioned inner heaters; Utilize above-mentioned elevating mechanism that above-mentioned inner heater is gone up and down simultaneously, then can intermittently and times without number carry out the inside heating the next preform of indexing transfer.
Then; Blow molding apparatus of the present invention comprises first handling part and second handling part, and above-mentioned first handling part carries out the heated condition adjustment to be handled, in this heated condition adjustment is handled; The switching mould of heating adjustment usefulness that use is used to adjust the heated condition of above-mentioned preform opens and closes mould as above-mentioned first; Adjust the heated condition of the each several part of this preform, above-mentioned second handling part carries out blow molding, in this blow molding; Use the blow molding mould to open and close mould, come above-mentioned preform is carried out blow molding or extending blow moulding to obtain above-mentioned bottle as above-mentioned second.
In addition; Also can adopt following mode: above-mentioned first handling part carries out pre-blowing and is moulded shape; Be moulded in the shape at this pre-blowing, use the first blow molding mould to open and close mould, come above-mentioned preform is carried out blow molding or extending blow moulding is the little middle formed products of above-mentioned bottle to obtain than final products as above-mentioned first; Above-mentioned second handling part carries out final blow molding and is shaped; In this final blow molding is shaped, use the second blow molding mould to open and close mould as above-mentioned second, come formed products in the middle of above-mentioned is carried out blow molding or extending blow moulding to obtain above-mentioned bottle.
In addition; Also can adopt following mode: above-mentioned first handling part carries out pre-blowing and is moulded shape, is moulded in the shape at this pre-blowing, uses the first blow molding mould to open and close mould as above-mentioned first; Coming above-mentioned preform is carried out blow molding or extending blow moulding is the middle formed products of the big circle of bottle to obtain than final products; Above-mentioned second handling part carries out final blow molding and is shaped, in this final blow molding is shaped, and formed products thermal contraction in the middle of above-mentioned and after becoming the shape of a little circle than above-mentioned bottle; Use the second blow molding mould to open and close mould, come formed products in the middle of above-mentioned is carried out blow molding or extending blow moulding to obtain above-mentioned bottle as above-mentioned second.
In addition, also can adopt following mode: in above-mentioned second handling part, under handle being inserted above-mentioned second state that open and close in the mould, carry out blow molding or extending blow moulding, come the inserts bottle with handles that is shaped.
In addition; At final products is in the bottle, and carrying out oral area and body at needs during contraposition, only needs a configuration guiding mechanism to get final product around the position of central axis; This guiding mechanism made preform rotate around central axis before stretch blow, adjusted preform with respect to the direction that opens and closes mould.
Description of drawings
Fig. 1 is vertical view, front view, right view, left view and a rearview of using the blow molding apparatus of large-scale bottle of the present invention.
Fig. 2 is the amplification plan view of blow molding apparatus.
Fig. 3 is the vertical view of the preform carrying mechanism of expression blow molding apparatus, the side view on expression the 3rd straight line carrying road, the side view on expression the 4th carrying road.
Fig. 4 is vertical view, side view, the cutaway view that the preform transfer mechanism on the 4th straight line carrying road is located in expression.
Fig. 5 is the side view of front view, supply unit and the discharge portion of the vertical view of expression preform supply unit, the vertical view of representing bottle discharge portion and side view, supply unit and discharge portion.
Fig. 6 is vertical view, front view, the side view of expression heating arrangements.
Fig. 7 is vertical view, front view, the side view of the inner heating arrangements of expression.
Fig. 8 is vertical view, front view, the side view of the inner heating arrangements of expression.
Fig. 9 is vertical view, front view, the side view of the matched moulds portion of expression extending blow moulding portion.
Figure 10 is the key diagram of the extension of expression extending blow moulding portion.
(symbol description)
1 blow molding apparatus
2 preforms
3 bottles
Formed products in the middle of 4
5 crusts of the device
The 5a canyon
The 5b process chamber
6 circulation roads
7 bearings (carrier)
11 first straight lines carrying road
12 second straight lines carrying road
13 the 3rd straight lines carrying road
14 the 4th straight lines carrying road
16 preform throw-in parts
17 first heating parts
18 second heating parts
19 first handling parts
20 second handling parts
21 first open and close mould
22 first processing positions
23 second open and close mould
24 second processing positions
25 bottles are discharged platform
26 bottle discharge portions
30 device frames
31 first line slideways
32 second line slideways
33 the 3rd line slideways
34 the 4th line slideways
35 first bearings are released cylinder
36 second bearings are released cylinder
37 first bearing handover portions
38,39,40 arms
41 take-off plate
42 driving mechanisms
51a, 51b control pawl
Cylinder is used in 52 switchings
53 turning arms
Cylinder is used in 54 rotations
61 external heat mechanisms
62 institutional frameworks
70 inner heating arrangements
71,72,76 heating rods
73 supporting arms
74 go up and down to use cylinder
75 inner heating arrangements
76 heating rods
77 supporting arms
78 go up and down to use cylinder
80 matched moulds portions
90 extensions
The specific embodiment
Below, with reference to accompanying drawing the embodiment of using blow molding apparatus of the present invention is described.
(overall structure)
Fig. 1 (a)～Fig. 1 (e) is vertical view, front view, right view, left view and the rearview of the blow molding apparatus of this embodiment of expression, and Fig. 1 (f) is that expression blow molding, middle formed products and final formed products are the key diagram of bottle.Fig. 2 is the amplification plan view of blow molding apparatus.The injection molded article of 1 pair of resin of blow molding apparatus are that preform 2 carries out biaxial stretch blow molding, make the large-scale bottle 3 that uses as the water receptacle of drinking water supply place etc.Details is stated after asking for an interview, and forms article 4 in the middle of preform 2 is become by the twin shaft stretch blow, and it is bottle 3 that middle formed products 4 is become final products by the twin shaft stretch blow.
Blow molding apparatus 1 comprises the whole crust of the device 5 that roughly is rectangular shape, and the latter half of crust of the device 5 is canyon 5a, and the first half is to be used for preform 2 is carried out extending blow moulding to obtain the process chamber 5b of bottle 3.In process chamber 5b, be used for preform 2 is disposed at grade along the circulation road of carrying via the carrying path of each handling part 6, the bearing 7 that is utilized in circulation in this circulation road 6 is carried preform 2.
Shown in Fig. 1 (f), bearing 7 comprises: the 7a of support body portion of rectangular profile; Remain in the cylindrical portion 7b of the 7a of this support body portion with the state that can rotate freely; Be installed on the preform cylindraceous insertion section 7c of cylindrical portion 7b upper part coaxial shape; And coaxial shape be installed on sprocket wheel (sprocket) 7d of cylindrical portion 7b end portion.Central part at bearing 7 is formed with central through hole 7e.
Shown in Fig. 1 (f), preform 2 is the injection molded article that are the resin of test tube shape, comprises circular oral area 2a, body 2b cylindraceous and hemispheric bottom 2c, and is thicker from the wall thickness of body 2b part of 2c to the bottom.Preform 2 is carried out the twin shaft stretch blow and the bottle 3 that obtains comprises: the oral area 2a of preform 2 is not extended and keeps the oral area 3a of original form; The body 2b of preform 2 and bottom 2c are carried out the twin shaft stretch blow and the body 3b cylindraceous and the bottom 3c that obtain.In the present embodiment; The body 2b of preform 2 and bottom 2c are carried out the twin shaft stretch blow to be made and has the body 4b cylindraceous that becomes a big circle, the middle formed products 4 of bottom 4c; Then, this centre formed products 4 being carried out the twin shaft stretch blow, to make final products be bottle 3.
Then, can know that the circulation road 6 of blow molding apparatus 1 is the closed circulation road that is positioned at the rectangle on the same plane, constitute by first straight line carrying road 11～the 4th straight line carrying road 14 from Fig. 1 (a), Fig. 2.Bearing 7 is carried along the direction shown in the arrow of Fig. 2 in circulation road 6.Half-way on first straight line carrying road 11 disposes the preform throw-in part 16 that preform 2 is installed in bearing 7 with handstand state.What first straight line was carried road 11 is the carrying road part of passing 17 inside, first heating part by the part of carrying the direction downstream than preform throw-in part 16; During carrying bearing 7 passed this carrying road part, the preform 2 that is installed in this bearing 7 was heated (once heating).Downstream on first straight line carrying road 11 is connected with the upstream extremity on second straight line carrying road 12.Second straight line carrying road 12 is carrying roads of passing 18 inside, second heating part, and during carrying bearing 7 passed this carrying road, the preform 2 that is installed in this bearing 7 was heated (post bake).
Downstream on second straight line carrying road 12 is connected with the upstream extremity on the 3rd straight line carrying road 13.In the 3rd straight line carrying road 13, swim side from it and dispose first handling part 19 and second handling part 20 towards the downstream.First handling part 19 of present embodiment comprises that the extending blow moulding mould promptly first opens and closes mould (not shown), first open and close mould clip the 3rd straight line carrying road 13 with the direction of the 3rd straight line carrying road 13 quadratures on open and close.To the center that is positioned at the first switching mould is that the preform of installing on the bearing 7 of the first processing position 22 2 carries out first processing.It is that preform 2 is carried out the twin shaft stretch blow and the processing of formed products 4 in the middle of obtaining that first of present embodiment is handled.
Second handling part 20 comprises that also the extending blow moulding mould promptly second opens and closes mould 23 (with reference to Fig. 9), second open and close mould 23 also clip the 3rd straight line carrying road 13 with the direction of the 3rd straight line carrying road 13 quadratures on open and close.To the center that is positioned at the second switching mould 23 is that the middle formed products of installing on the bearing 7 of the second processing position 24 4 carries out second processing.It is that middle formed products 4 is carried out the twin shaft stretch blow and obtains the processing that final products are bottle 3 that second of present embodiment is handled.
Carry at the 4th straight line that the downstream with the 3rd straight line carrying road 13 links to each other road 14 upstream extremity position 14a near; The bottle 3 that disposes installing on the bearing 7 that will be positioned at this position unloads from bearing 7, and with its bottle discharge portion 26 towards the discharge of discharge platform 25 sides.Unload bottle 3 at bottle discharge portion 26 places and become empty bearing 7 is got back to first straight line carrying road 11 via the 4th straight line carrying road 14 upstream extremity position 11a.
(bearing carrying mechanism)
Mainly with reference to Fig. 3 and Fig. 4, to describing along the bearing carrying mechanism of carrying bearing 7 by the circulation road 6 of first straight line carrying road 11～rectangle that the 4th straight line carrying road 14 constitutes.Fig. 3 (a) is the vertical view on expression circulation road 6, and Fig. 3 (b) is the side view on expression the 3rd straight line carrying road 13, and Fig. 3 (c) is the cutaway view on expression the 4th straight line carrying road 14.Fig. 4 (a), Fig. 4 (b) and Fig. 4 (c) are vertical view, side view and the cutaway views that the first bearing handover portion on the 3rd straight line carrying road 13 is located in expression, and Fig. 4 (d) is the key diagram of the arm of the expression first bearing handover portion.
At first, first straight line carrying road 11～the 4th straight line carrying road 14 is confirmed by first line slideway 31 that is supported to level by device frame 30～the 4th line slideway 34.First line slideway 31～the 4th line slideway 34 is the guide rails with channel-section of opening towards the top, and the both side edges portion of the 7a of support body portion of the rectangular profile of bearing 7 slides along this guide rail.
In first straight line carrying road 11, bearing 7 is arranged along first line slideway 31 with the state that is in contact with one another.That is, the 7a of support body portion with adjacent bearing 7 arranges at the state that the front/rear end of carrying on the direction is in contact with one another.Near the upstream extremity position 11a on first straight line carrying road 11, dispose bearing and release cylinder 35 (the first bearing release portion).The push-off pin 35a that bearing is released cylinder 35 can transmit spacing p1 with first line slideway, 31 releases of bearing 7 edges to be equivalent to first of a bearing.Therefore; Each bearing 7 that is arranged in first straight line carrying road 11 is transmitted spacing p1 side carrying towards downstream off and on first; When the bearing 7 of the downstream end position 11b that is positioned at first straight line carrying road 11 was seen off an amount of separation, it was admitted to the upstream extremity position 12a on second straight line carrying road 12.
In second straight line carrying road 12, bearing 7 is also arranged along second line slideway 32 with the state that is in contact with one another.Near the upstream extremity position 12a on second straight line carrying road 12, also dispose the bearing of with the transmission spacing of a bearing size each bearing 7 being released along this second straight line carrying road 12 and release cylinder 36 (the second bearing release portion).When the bearing 7 of the downstream end position 12b that is positioned at second straight line carrying road 12 was seen off an amount of separation, it was admitted to the upstream extremity position 13a on the 3rd straight line carrying road 13.
In addition, between the pair of sprocket 101a of preform throw-in part 16 sides that are disposed at first straight line carrying road 11,101b, set up chain 103a, between the pair of sprocket 102a that is disposed at second straight line carrying, 12 sides, road, 102b, set up chain 103b.Chain 103a, 103b are configured to mesh with the sprocket wheel 7d of each bearing 7 of part carrying along above-mentioned carrying road.Therefore, utilize not shown rotary driving source to drive a sprocket wheel rotation, can make the preform 2 that comes through first heating part 17,18 carryings of second heating part, come it evenly to be heated from outer circumferential side around its central axis rotation.
Then; As shown in Figure 4; In the 3rd straight line carrying road 13, dispose the first bearing handover portion 37, this first bearing handover portion 37 is used for along the 3rd line slideway 33 with the transmission spacing p2 triplets ground carrying bearing 7 bigger than the transmission spacing p1 of a bearing size.The first bearing handover portion 37 comprises: three telescopic arms 38,39,40; The take-off plate 41 of above-mentioned arm 38～40 is installed; And the driving mechanism 42 that take-off plate 41 is moved back and forth on the carrying direction along the 3rd line slideway 33.
Telescopic arm 38～40 is installed on take-off plate 41 with the interval of transmitting spacing p2, and each arm 38～40 comprises: can with the direction of the 3rd line slideway 33 quadratures on flexible arm 38a～40a; And driving cylinder 38b～40b that arm 38a～40a is stretched.Being formed with at the leading section of arm 38a～40a can be from the semicircular groove 38c～40c of the lower portion butt of bearing insertion section 7c laterally and the cylindrical portion 7b of bearing 7.Take-off plate 41 moves back and forth on the carrying direction with the length that transmits spacing p2.Therefore, when take-off plate 41 was in the arm 38 that makes upstream side and is positioned at the going-back position 41A of upstream extremity position 13a on the 3rd straight line carrying road 13, the arm 39 in its downstream was positioned at the first processing position 22, and the arm 40 in downstream is positioned at the second processing position 24.When take-off plate 41 moves to towards downstream when breakking away the moving progressive position 41B that transmits spacing p2, arm 38～40 is positioned the upstream extremity position 14a on the first processing position 22, the second processing position 24 and the 4th straight line carrying road 14 respectively.
Be positioned in take-off plate 41 under the state of going-back position 41A; Make each arm 38a～40a elongation and engage, follow, make take-off plate 41 move to progressive position 41B with each bearing 7; Through making each arm 38a～40a withdrawal break away from each bearing 7, make take-off plate 41 get back to going-back position 41A from progressive position 41B.In the action of indexing transfer each time of bearing 7, carry out above-mentioned a series of actions.
Then, utilize the second bearing handover portion (not shown) to make to be admitted to the bearing 7 of the upstream extremity position 14a on the 4th straight line carrying road 14 to get back to the upstream extremity position 11a on first straight line carrying road 11.This action that makes bearing 7 get back to first straight line carrying road 11 is also carried out in the action of indexing transfer each time of bearing 7.The concrete structure of the second bearing handover portion 43 is also not shown, can use the straight-line motion mechanism of selling on the market, for example the rectilinear motion unit of built-in electric cylinder.This straight-line motion mechanism by comprise CD-ROM drive motor, mechanism along the chain-linked conveyer of cyclic track circulation under the effect of CD-ROM drive motor constitutes, between the upstream extremity position 11a of above-mentioned cyclic track through 14a to the first straight line carrying road 11, upstream extremity position on the 4th straight line carrying road 14.
(preform throw-in part, bottle discharge portion)
Fig. 5 (a)～Fig. 5 (c) is vertical view, front view and the side view of expression bottle discharge portion 26.Bottle discharge portion 26 comprises: be used for controlling from both sides bottle 3 oral area 3a a split closed control pawl 51a, 51b; Make above-mentioned switching of controlling pawl 51a, 51b switching with cylinder 52; Supporting opens and closes the turning arm 53 with cylinder 52; And the rotation that is used to make turning arm 53 rotations is with cylinder 54.
Turning arm 53 can level swing to the 4th straight line carrying road 14 upstream extremity position 14a side extract side position 53A to the Rotate 180 degree and level is swung between the discharge side position 53B of opposition side and rotated.The switching that is installed in turning arm 53 is positioned at the both sides of the oral area 3a of the bottle 3 that inserts bearing 7 with control the pawl 51a, 51b of the split closed on the cylinder 52 extracting side position 53A place, when above-mentionedly controlling pawl 51a, when 51b closes, can controlling bottle 3.Under this state, make turning arm 53 when discharging side position 53B rotation, bottle 3 is extracted towards the top from bearing 7.When turning arm 53 rotated to discharge side position 53B, the bottle 3 of being controlled was in to carry and places bottle to discharge the state of platform 25.Under this state, open and control pawl 51a, 51b discharges bottle 3.The bottle 3 that is expelled to bottle discharge platform 25 is reclaimed by operator or carrying mechanism.
In addition, because preform throw-in part 16 also adopts and bottle discharge portion 26 essentially identical structures, therefore, omit its explanation.In preform throw-in part 16, the discharge side position 53B of turning arm 53 is supply side positions of preform, and the side position 53A that extracts of turning arm 53 is positions, inserting side that preform 2 is inserted bearing 7.
(first heating part, second heating part)
Fig. 6 (a)～Fig. 6 (c) is vertical view, front view and the side view of the external heat mechanism of expression first heating part 17, and Fig. 7 (a)～Fig. 7 (c) is vertical view, front view and the side view of the inside heating arrangements of expression first heating part 17.Because the structure of second heating part 18 and the structure of first heating part 17 are basic identical, therefore, omit its explanation.
As shown in Figure 6, the external heat mechanism 61 of first heating part 17 heats from the outside to the preform 2 that is installed in bearing 7, and above-mentioned bearing 7 is carried in first straight line carrying road 11 off and on.The front end of a plurality of Horizontal Branch bearing arms 63 of configuration and carrying direction flatly are supported with infrared heater 64 up and down at certain intervals at the institutional framework 62 of a side of utilizing first straight line carrying road 11 in external heat mechanism 61.At the blow vent 66 that is formed with on the institutional framework 65 of an opposite side that is disposed at first straight line carrying road 11 in the slit-shaped that extends below at certain intervals on the carrying direction.Never illustrated air supply source blows out tempering air via the ventilating duct 67 that is installed on institutional framework 65 outsides and 66 pairs of preforms 2 that in first heating part 17, are handled upside down of blow vent.Like this, can prevent to be in superheat state because of external heat mechanism 61 makes the outer peripheral face of preform 2.
As shown in Figure 7, the inside heating arrangements 70 of first heating part 17 comprises: the elongated a pair of heating rod 71,72 of inner heating usefulness; Above-mentioned heating rod 71,72 is supported to vertical supporting arm 73; Be used to make up-down that supporting arm 73 vertically goes up and down with cylinder 74, go up and down to be installed on device frame 30 with cylinder 74.A pair of heating rod 71,72 is spaced with the transmission spacing p1's of bearing 7; In the part on first straight lines carrying road 11 of passing 17 inside, first heating part, a pair of heating rod 71,72 can pass central through hole 7e and be inserted into preform 2 from its downside with respect to two the adjacent bearings 7 that are positioned at interim stop position.
Under the effect of going up and down with cylinder 74, a pair of heating rod 71,72 can go up and down between near the lifting position 71B the down position 71A of bearing 7 downsides, 72A rise to the bottom 2c in the preform 2 to the front end of heating rod, 72B.Heating rod 71,72 through being in heated condition is inserted in the preform 2, can heat from the inboard to preform 2.That is, when temporarily being stopped by the bearing 7 of indexing transfer, heating rod 71,72 rises and is inserted into the inside of the preform 2 that is installed in bearing 7, heats from the inboard to preform 2.Before bearing 7 is transferred out, heating rod 71,72 is extracted towards the below from preform 2, bearing 7.Like this, in first heating part 17, second heating part 18, when heat in the outside, also heating, thereby can evenly heat and can appearance temperature uneven the thicker preform of wall thickness from the inboard.
Use adjacent two places of two heating rods 71,72 in first heating part 17 to carry out the inside heating in the present embodiment, but also can use a heating rod only to carry out the inside heating at a place.In addition, also can carry out the inside heating to preform 2 in the position more than three places in first heating part 17.Below, the structure example of the inside heating arrangements when carrying out inner heating at six continuous places describes.
Fig. 8 (a)～Fig. 8 (c) is vertical view, front view and the side view that is illustrated in the example of the inside heating arrangements that uses when six continuous places carry out inner the heating.In illustrated inner heating arrangements 75, be arranged with six roots of sensation heating rod 76 to transmit spacing p1, the supporting arm 77 that these heating rods are supported is installed on the elevating lever 78a with cylinder 78.At this moment, a preform 2 is heated from the inboard by each heating rod 76 under the interim halted state during six indexing transfers action.For example, raise if the heating-up temperature of each heating rod 76 set for progressively towards the downstream from upstream side, then preform 2 is heated and temperature slowly raises.In addition, in the example of Fig. 8, use the mechanism that disposes infrared heater 64 in the both sides on carrying road as external heat mechanism.
At this, in the present embodiment, the two all comprises inner heating arrangements first heating part 17 and second heating part 18.Can in first heating part 17, heat inside of carrying out preform 2 at less position as shown in Figure 7 the inside heating of carrying out preform 2 at more position as shown in Figure 8 in second heating part 18.On the contrary, also can be in first heating part 17 carry out the inside heating of preform 2, in second heating part 18, carry out the inside heating of preform 2 at less position at more position.
In addition, can be with first heating part 17 only as external heat mechanism, and with second heating part 18 also only as external heat mechanism.Only dispose under the situation of inner heating arrangements in first heating part 17, can be in second heating part 18 configuring external heating arrangements only, perhaps dispose inner heating arrangements and external heat mechanism the two.Like this, through a plurality of heating parts (in the present embodiment, being first heating part 17,18 these two heating parts, second heating part) compound mode, can realize various preform mode of heatings with inner heating arrangements and external heat mechanism.Therefore, can be according to the percentage elongation of the shape of the shape of preform 2, size, wall thickness etc. and the final bottle that obtains, size, wall thickness, each several part etc., adopt only mode of heating.
(first handling part, second handling part)
Fig. 9 (a)～Fig. 9 (c) is vertical view, cutaway view and the side view that second of expression second handling part 20 opens and closes the matched moulds portion of mould 23.Figure 10 (a) is the cutaway view when dissecing second of second handling part 20 and open and close the extension of mould 23 with the face with the 3rd straight line carrying road 13 quadratures, and Figure 10 (b) is the cutaway view when dissecing extension with the 3rd straight line carrying road 13 parallel faces.
As stated; Second handling part 20 is the positions of carrying out second processing; Second handle at this, it is that bottle 3, the second opens and closes moulds 23 and comprises pair of right and left segmented mold 23a, 23b and bottom die 23c that middle formed products 4 is carried out the twin shaft stretch blow final products that are shaped.Second open and close mould 23 matched moulds portion 80 comprise to about segmented mold 23a, 23b support about slidingtype mould supporting member 81,82.Slidingtype mould supporting member 81,82 is installed into slidable state on the left and right sides rest pad that is installed on device frame 83,84.About slidingtype mould supporting member 81,82 open and close direction in the effect lower edge of not shown slide mechanism and slide, carry out matched moulds, the die sinking action of left and right sides segmented mold 23a, 23b.Bottom die 23c is installed on state down and is installed on the expansion link 86a of a up-down of shape supporting frame 85 with cylinder 86, with about segmented mold 23a, the on-off action of 23b synchronously go up and down, above-mentioned door shape supporting frame 85 is installed on device frame.
Shown in figure 10, be positioned at second handling part 20 second open and close mould 23 centers the second processing position 24 under, dispose the extension 90 that formed products 4 extends towards the top in the middle of being used to make.Extension 90 comprises elongated extension rod 91, will extend excellent 91 is supported to the supporting member 92 of vertical position and makes up-down that supporting member 92 vertically goes up and down with cylinder 93.Extend that rod 91 passes the central through hole 7e of the bearing 7 that is positioned at the second processing position 24 and the inside of formed products 4 in the middle of being inserted into, the bottom 4c of middle formed products 4 is raised towards the top.By this, middle formed products 4 extends towards the top.In addition, be provided with at extension 90 and be used for blowing out mechanism (not shown) towards the internal feed blowing of middle formed products 4 with the air of air via the central through hole 7e of bearing 7.Action through formed products 4 in the middle of carrying out in the suitable moment blowing is blown into air and utilize to extend the extension action that rod 91 extends; Middle formed products 4 is carried out the twin shaft stretch blow, thereby can obtain correctly to copy the bottle 3 of the die cavity inner peripheral surface shape of confirming by the second switching mould 23.
The structure of another the first handling part 19 also structure with second handling part 20 is identical.Difference is that the employed first switching mould 21 is the moulds that are used for middle formed products 4 is carried out extending blow moulding.
At this, first handling part 19, second handling part 20 can be like the various processing modes of the said employing in back.At first, first of first handling part 19 processing can be adopted any processing mode in following (a1)～(a5).
(a1) the switching mould of heating adjustment usefulness that is used to adjust the heated condition of preform 2 opens and closes mould 21 as first, adjusts the heated condition adjustment of heated condition of the each several part of preform 2 and handles.
(a2) use the blow molding mould to open and close mould 21 as first, preform 2 is carried out blow molding or extending blow moulding, obtaining than final products is that the pre-blowing of the little middle formed products 4 of bottle is moulded processing.
(a3) use the blow molding mould to open and close mould 21 as first, preform 2 is carried out blow molding or extending blow moulding, obtaining than final products is that the pre-blowing of the middle formed products 4 of the big circle of bottle is moulded processing.
(a4) use the blow molding mould to open and close mould 21 as first, preform 2 is carried out blow molding or extending blow moulding, obtaining final products is the blow process of bottle 3.
(a5) maintenance first opens and closes the processing of the die opening state of mould 21.
Corresponding to above-mentioned first processing (a1)～(a5), can adopt following contents processing to carry out second of second handling part 20 and handle.
(b 1) can adopt and use the blow molding mould to open and close mould 23 as second when adopting first to handle (a1), and preform 2 is carried out blow molding or extending blow moulding, obtains the blow process of bottle 3.The heated condition of the each several part of preform 2 is changed.For example, can be the higher part of the part of desiring to make the wall thickness thickening in the bottle, the part of desiring to make the wall thickness attenuation, percentage elongation, grade, the heating-up temperature of the each several part of preform 2 is changed corresponding to final products than lower curtate.Be applicable to when bottle with flattened etc. is shaped, percentage elongation is adjusted to the situation lower than the temperature of the higher part of percentage elongation than the temperature of lower part.In addition, also be applicable to through inserts to be shaped when forming handle, be the percentage elongation that reduces the inserts part of handle, and the temperature of this part is adjusted to the situation lower than the temperature of other parts.
(b2) when adopting first to handle (a2), can adopt and use the blow molding mould to open and close mould 23 as second, the contrast final products are that the little middle formed products 4 of shape of bottle carries out blow molding or extending blow moulding, the final blow molding that obtains bottle 3 is handled.This is the processing under the situation of blow molding apparatus 1 of this embodiment.Be applicable to that the preform higher from percentage elongation, that wall thickness is thicker is configured as the situation of tun etc.
(b3) when adopting first to handle (a3); Can adopt and use the blow molding mould to open and close mould 23 as second; Make be configured as shape than final formed products be the big circle of the shape of bottle middle formed products thermal contraction and after becoming the shape of enclosing than bottle little; This centre formed products is carried out blow molding or extending blow moulding, and the final blow molding that obtains bottle 3 is handled.Be applicable to and make the thicker preform of wall thickness extend with the situation that obtains the higher tun of hear resistance with higher percentage elongation etc.
(b4) when adopting first to handle (a4), the die opening state that only needs maintenance second to open and close mould 23 gets final product.For example, when the beverage that makes stock size is shaped with bottle etc., blow molding or extending blow moulding need not be carried out sometimes repeatedly, only a blow molding need be carried out or extending blow moulding gets final product.In this case, only need to use a handling part to get final product.
(b5) on the contrary, when adopting first to handle (a5), that is, when not using first handling part, only need employing second to handle (b1) and get final product.In this case, when the beverage that makes stock size is shaped with bottle etc., also need not carry out blow molding or extending blow moulding sometimes repeatedly, only need carry out a blow molding or extending blow moulding gets final product, be applicable to this situation.
In addition, for large-scale containers such as bottle, be shaped mounting knob carrying easily through inserts sometimes.For example, in second handling part 20, under handle being inserted second state that open and close in the mould 23, carry out blow molding or extending blow moulding, the ability inserts container with handles that is shaped.
(the position adjustment of oral area)
In addition; In containers such as bottle; Carry out oral area and body around the position of central axis during contraposition at needs; Only need the configuration guiding mechanism get final product, this guiding mechanism made preform 2 rotate around its central axis before stretch blow, adjusted the direction of the switching mould 21,23 that preform 2 uses with respect to blow molding.Under the situation of the blow molding apparatus 1 of this embodiment; Dispose make the bearing 7 that is installed in the upstream extremity position 13a that is admitted to the 3rd straight line carrying road 13 from second straight line carrying road 12 preform 2 around its central axis rotation, be adjusted at the guiding mechanism of the direction of this preform 2 of carrying in the 3rd straight line carrying road 13.
Shown in Fig. 3 (a), guiding mechanism 110 comprises: can with the sprocket wheel 111 of the sprocket wheel 7d engagement of the bearing 7 of the upstream extremity position 13a that is admitted to the 3rd straight line carrying road 13; And this sprocket wheel 111 is moved to the sprocket wheel 7d position engaged of bearing side and to remove the travel mechanism 112 of position engaged.Travel mechanism 112 by the swing arm 113 that sprocket wheel 111 is installed at leading section, be used to make the electric cylinder 114 of these swing arm 113 swings to constitute.
Claims (10)
1. a blow molding apparatus is characterized in that, comprising:
Can the injection molded article with body and oral area of bottom tube-like will be arranged is that preform is installed the bearing that becomes to make said oral area handstand state down;
Be first straight line carrying road～the 4th straight line carrying road that makes said bearing circulation formation at grade rectangle circulation road;
Make said bearing carry the carrying mechanism that carry on the road via said first straight line carrying road～the 4th straight line successively;
Half-way on said first straight line carrying road is installed in said preform the throw-in part of said bearing;
In said first straight line carrying road during the said bearing of carrying, first heating part that the said preform that is installed in this bearing is heated;
In said second straight line carrying road during the said bearing of carrying, second heating part that the said preform that is installed in this bearing is heated;
Open and close in the mould in first of the half-way that is disposed at said the 3rd straight line carrying road, the said preform that is installed in said bearing is carried out first handling part of first processing;
In the second switching mould of the position of in being disposed at said the 3rd straight line carrying road, handling by the position in bearing carrying direction downstream than said first handling part, second handling part that the said preform that is installed in said bearing is carried out second processing; And
Carry the upstream extremity position of direction at the bearing on said the 4th straight line carrying road; To carry out said first to said preform handles and said second at least one processing and the final products that obtain in handling are bottle from discharge portion that said bearing takes off and discharges
At least one processing during said first processing and said second is handled is that blow molding processing or extending blow moulding are handled.
2. blow molding apparatus as claimed in claim 1 is characterized in that,
Said carrying mechanism comprises:
The first bearing release portion, this first bearing release portion will carry on the road at said first straight line and release off and on towards said bearing carrying direction with the first transmission spacing that is equivalent to a bearing size along the row of the said bearing of said bearing carrying direction arrangement with the state that is in contact with one another;
The second bearing release portion, this second bearing release portion will release towards said bearing carrying direction with the said first transmission spacing along the row of the said bearing of said bearing carrying direction arrangement with the state that is in contact with one another on said second straight line carrying road off and on;
The first bearing handover portion; This first bearing handover portion carries out transfer movement off and on said the 3rd straight line carrying road; In this transfer movement; The first processing position and said second that the upstream extremity position, said first that will be positioned at the said bearing that reception releases from said second straight line carrying road opens and closes mould opens and closes each bearing of the second processing position of mould transmitting big second the transmitting spacing and see off of spacing than said first, thereby said bearing is transplanted on the said upstream extremity position on the said first processing position, the said second processing position and said the 4th straight line carrying road respectively; And
The second bearing handover portion; This second bearing handover portion carries out transfer movement off and on; In this transfer movement, make the said bearing of the said upstream extremity position that is positioned at said the 4th straight line carrying road be transplanted on the upstream extremity position that said first straight line is carried the road via the 4th straight line carrying road.
3. according to claim 1 or claim 2 blow molding apparatus is characterized in that,
Said first heating part comprise from the outside external heat mechanism that said bearing that indexing transfer is come heats and the inside heating arrangements that said bearing is heated from the inboard the two; Perhaps include only said external heat mechanism; Perhaps include only said inner heating arrangements again
Comprise under the two the situation of said external heat mechanism and said inner heating arrangements in said first heating part; Said second heating part comprise said external heat mechanism and said inner heating arrangements the two; Perhaps include only said external heat mechanism; Include only in said first heating part under the situation of said external heat mechanism; Said second heating part includes only said external heat mechanism, perhaps comprise said external heat mechanism and said inner heating arrangements the two, include only under the situation of said inner heating arrangements in said first heating part; Said second heating part comprise said external heat mechanism and said inner heating arrangements the two, perhaps include only said external heat mechanism.
4. blow molding apparatus as claimed in claim 3 is characterized in that,
Said bearing has the central through hole that runs through its central part extension along the vertical direction,
Said inner heating arrangements comprises: the said central through hole that can pass at least one said bearing is inserted into the inner inside heater of said preform that is installed in this bearing; And the elevating mechanism that this inside heater is gone up and down,
When the next said bearing of indexing transfer temporarily stops; Said inner heater is risen; Said inner heater is inserted in the said preform that is installed in said bearing; Thereby heat from the inboard to this preform, and said inner heater is descended.
5. blow molding apparatus as claimed in claim 4 is characterized in that,
Be arranged with many said inner heaters to transmit the identical spacing of spacing, utilize said elevating mechanism that many said inner heaters are gone up and down simultaneously with first of said bearing.
6. blow molding apparatus as claimed in claim 1 is characterized in that,
Said first handling part carries out the heated condition adjustment to be handled; In the adjustment of this heated condition was handled, the switching mould of heating adjustment usefulness of heated condition that is used to adjust said preform was adjusted the heated condition of the each several part of this preform as the said first switching mould; Said second handling part carries out blow molding; In this blow molding, use the blow molding mould to open and close mould as said second, come said preform is carried out blow molding to obtain said bottle.
7. blow molding apparatus as claimed in claim 1 is characterized in that,
Said first handling part carries out pre-blowing and is moulded shape; Be moulded in the shape at this pre-blowing; Use the first blow molding mould to open and close mould as said first; Coming said preform is carried out blow molding or extending blow moulding is little middle the formed products of said bottle to obtain than final products, and said second handling part carries out final blow molding and is shaped, in this final blow molding shaping; Use the second blow molding mould to open and close mould, come formed products in the middle of said is carried out blow molding or extending blow moulding to obtain said bottle as said second.
8. blow molding apparatus as claimed in claim 1 is characterized in that,
Said first handling part carries out pre-blowing and is moulded shape; Be moulded in the shape at this pre-blowing; Use the first blow molding mould to open and close mould as said first, come said preform is carried out blow molding or extending blow moulding is middle the formed products of the big circle of bottle to obtain than final products, said second handling part carries out the final blow molding shaping; In this final blow molding is shaped; Formed products thermal contraction in the middle of said and after becoming the shape of the little circle than said bottle, use the second blow molding mould to open and close mould as said second comes formed products in the middle of said is carried out blow molding or extending blow moulding to obtain said bottle.
9. like each described blow molding apparatus in the claim 6 to 8, it is characterized in that,
In said second handling part, under handle being inserted said second state that open and close in the mould, carry out blow molding or extending blow moulding, come the inserts bottle with handles that is shaped.
10. blow molding apparatus as claimed in claim 1 is characterized in that,
Have guiding mechanism, this guiding mechanism makes the said preform of being installed on the said bearing of the said upstream extremity position that is fed through said the 3rd straight line carrying road around its central axis rotation, adjusts the direction of this preform.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011124136A JP5709648B2 (en) | 2011-06-02 | 2011-06-02 | Blow molding equipment |
| JP2011-124136 | 2011-06-02 |
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| CN102806653A true CN102806653A (en) | 2012-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011102162789A Pending CN102806653A (en) | 2011-06-02 | 2011-07-19 | Blow molding apparatus |
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| CN (1) | CN102806653A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1128699A (en) * | 1994-11-11 | 1996-08-14 | 日精Asb机械株式会社 | Apparatus and method of molding heat-resistant container |
| CN1198126A (en) * | 1996-07-24 | 1998-11-04 | 株式会社开拓 | Biaxial orientation molding machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6277919A (en) * | 1985-10-01 | 1987-04-10 | Mitsubishi Plastics Ind Ltd | Blow molding method for bottle |
| JPH0628896B2 (en) * | 1990-06-04 | 1994-04-20 | 東洋製罐株式会社 | Method and apparatus for manufacturing synthetic resin container with handle |
| JP3419615B2 (en) * | 1994-12-14 | 2003-06-23 | 日精エー・エス・ビー機械株式会社 | Blow molding equipment |
| JPH10679A (en) * | 1996-06-12 | 1998-01-06 | Toppan Printing Co Ltd | Method and apparatus for manufacturing composite container |
| JP3640293B2 (en) * | 1999-01-08 | 2005-04-20 | 日精エー・エス・ビー機械株式会社 | Preform positioning device |
| CA2644165C (en) * | 2006-03-09 | 2014-07-15 | B & R Industries Pty Ltd | Improvements in pet blow moulding machines |
-
2011
- 2011-06-02 JP JP2011124136A patent/JP5709648B2/en active Active
- 2011-07-19 CN CN2011102162789A patent/CN102806653A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1128699A (en) * | 1994-11-11 | 1996-08-14 | 日精Asb机械株式会社 | Apparatus and method of molding heat-resistant container |
| CN1198126A (en) * | 1996-07-24 | 1998-11-04 | 株式会社开拓 | Biaxial orientation molding machine |
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| JP5709648B2 (en) | 2015-04-30 |
| JP2012250411A (en) | 2012-12-20 |
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Application publication date: 20121205 |