CA1144726A - Device for removing and conveying injection-molded piece - Google Patents
Device for removing and conveying injection-molded pieceInfo
- Publication number
- CA1144726A CA1144726A CA000399057A CA399057A CA1144726A CA 1144726 A CA1144726 A CA 1144726A CA 000399057 A CA000399057 A CA 000399057A CA 399057 A CA399057 A CA 399057A CA 1144726 A CA1144726 A CA 1144726A
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- pieces
- piece
- injection
- gate
- conveyor
- Prior art date
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Abstract
ABSTRACT
A transparent thin bottle-shaped container is produced by means of biaxially oriented blow molding of a cylindrical piece with a bottom of polyethylene terephthalate material.
Multiple pieces are molded by every cycle of an injection molding machine. The multiple pieces thus formed are held at the gate integrally projecting therefrom, by a base plate moved forward at the front of the mold in the injection mold-ing machine and then conveyed to a gate cutting unit provided to one side of the injection molding machine. The pieces thus cut from the gate by the cutting unit are sequentially conveyed onto a conveyor. The pieces are gradually cooled from the hot molded temperature during the conveyance and are additionally cooled, while being conveyed on an oblique conveyor installed with a cooler, to room temperature or lower predeter-mined temperature. The cooled pieces are then re-heated by a heater immediately before a biaxially orientation blow molding process.
A transparent thin bottle-shaped container is produced by means of biaxially oriented blow molding of a cylindrical piece with a bottom of polyethylene terephthalate material.
Multiple pieces are molded by every cycle of an injection molding machine. The multiple pieces thus formed are held at the gate integrally projecting therefrom, by a base plate moved forward at the front of the mold in the injection mold-ing machine and then conveyed to a gate cutting unit provided to one side of the injection molding machine. The pieces thus cut from the gate by the cutting unit are sequentially conveyed onto a conveyor. The pieces are gradually cooled from the hot molded temperature during the conveyance and are additionally cooled, while being conveyed on an oblique conveyor installed with a cooler, to room temperature or lower predeter-mined temperature. The cooled pieces are then re-heated by a heater immediately before a biaxially orientation blow molding process.
Description
'7~6 BACKGROUND OF THE INVENTIO~:
This is a division of application 326,197 filed on April 24, 1979.
The present invention relates to a device for removing and conve~ing an injection-molded piece in an apparatus ~or fabricating a bottle-shaped blow-molded container of a biaxially oriented plastic and, more specifically, to a piece process line which has the steps of drawing a preformed piece from the mold core of an injection molding machine, cutting the gates of the pieces, and temporarily cooling the pieces to accurately reserve the molding conditions before heating them to a temperature adapted for a biaxially orien-tation process.
Polyethylene terephthalate resin has a wide range of applications in the filed of ~olding material of synthetic resin bottle-shaped containers because of its superior physical properties and characteristics.
In molding a bottle-shaped container of polyethylene terephthalate resin, there is adopted a so-called injection blow-molding process in which a preformed piece of cylin-drical shape with a bo~tom is injection--molded, and is then hiaxially oriented blow-molded due to .its pre~erable charac-teristics.
-- 2 ~
Therefore, such a bottle-shaped container is sequentially nolded by a process having the steps of injection-r.lolding the piece, removing the piece thus injection-molded, and clampiny the piece in a blow~molding machine for blow-molding the same.
It is desired to automate all these steps to complete the molding process of such a bottle-shaped container. How ever, a considerably thick gate is integrally formed at the piece thus injection-molded owing to polyethylene terephthalate characteristics, and this gate of the piece is manually sep-arated with an exclusive cutter.
However, since the injection-molding process takes much longer time than the blow-molding in one molding step and the piece thus injection-molded is not so large, there are pro-duced a number of such pieces even in one moldiny process.
Accordingly, it requires farther longer time to completely fabricate a bottle-shaped container when numerous pieces thus injection-molded are manually separated from their gates in-depenclently resulting in remarkably inefficient productivity.
SUMMARY OF THE INVENTION:
The present invention provides a device for removing and conveying an injection-molded piece in an apparatus for fabri-cating a bottle-shaped blow-molded container of a biaxially oriented plastic by essentially consisting of a piece removing unit for holding the gates of numerous cylindrical pieces with bottoms molded by sequential injection-molding steps of an injection molding machine and moving them aside from the machine, a gate cutting unit ~or separating the gates of the pieces thus removed, and a cooler for cooling the pieces to room or less than room temperature as predetermined.
An object of the present invention is to provide a device for removing and conveying an injection-molded piece for a bottle~shaped blow-molded container of polyethylene terephthalate immediately after the molding process from an injection-molding machine and to a biaxially orientation blow-molding machine which can simultaneously remove the pieces with bottoms without scratches from the molds of the injection-molding machine.
Another object of the present invention is to provide a device for removing and conveying an injection-molded piece for a bottle-shaped blow-molded container of polyethylene terephthalate immediately after the molding process from an injection-molding machine and to a biaxially orientation blow-rnolding machine which can hold numerous pieces thus injection-; molded via a base plate without altering their array and can rapidly convey them to a gate cutting unit.
Still another object of the present invention is to pro-vide a device for removing and conveyiny an inject.ion-molded piece for a bottle-shaped blow-molded container of polyethylene terephthalate immediately after the molding process from an injection-molding machine and to a biaxially orientation blow-molding machine which can cool the pieces thus injection-molded to predetermined tempera.ure during piece conveying time in order to make the heating conditions of the pieces immediately before the biaxially orientation blow-molding process uniform.
The parent application is directed to an apparatus Eor removing an injection-molded piece having a cylindrical shape '7~6 with a bottom for use in a bottle~sha~?ed blow-molded container, of polyethylene terephthalate immedia-tely af-ter the molding process from an injection-molding machine and to a biaxially oriented blow-molding machine comprising^
removing means supported by and movable along a rail installed over the injection-molding machine and elevationally movable relative thereto for removing the piece from the injection-molding machine and moving the same to a gate cutting means;
gate cutting means for cutting a gate integrally projec-ting from the bottom of the piece removed by said removing means; and, means for cooling the molded pieces after the gate has been removed, said cooling means comprising a conveyor for moving said pieces and having a confined area therearound pro-vided by a cover plate for use in cooling the piece cut from the gate by said gate cutting means with cooling air fed into said confined area through a cooling air inlet.
The present divisional app]ication is directed to a device for cooling and conveying pieces after they have been molded in a molding machine comprising:
an endless conveyor for conveying the mold ~ieces in sequence from one position to another;
a confined area provided by a cover substantially enclosing said conveyor;
a cooling air inlet in said cover for introducing cooling air into said confined area to lower the hot pieces to a pre-determined temperature; and, deflector means in said confined area, adjacent said cooling air inlet, for distributing the cooling air within said confined area.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other objects and features of the present in-vention will become apparent from the following description of the preferred embodiments of the present invention when reading with reference to the accompanying drawings, in which:
: Fig. 1 is a side view of a preferred embodiment of the device in an orientation blow-molding process line including removal of piece preformed in an injection molding machine accor-ding to the present invention.
7~26
This is a division of application 326,197 filed on April 24, 1979.
The present invention relates to a device for removing and conve~ing an injection-molded piece in an apparatus ~or fabricating a bottle-shaped blow-molded container of a biaxially oriented plastic and, more specifically, to a piece process line which has the steps of drawing a preformed piece from the mold core of an injection molding machine, cutting the gates of the pieces, and temporarily cooling the pieces to accurately reserve the molding conditions before heating them to a temperature adapted for a biaxially orien-tation process.
Polyethylene terephthalate resin has a wide range of applications in the filed of ~olding material of synthetic resin bottle-shaped containers because of its superior physical properties and characteristics.
In molding a bottle-shaped container of polyethylene terephthalate resin, there is adopted a so-called injection blow-molding process in which a preformed piece of cylin-drical shape with a bo~tom is injection--molded, and is then hiaxially oriented blow-molded due to .its pre~erable charac-teristics.
-- 2 ~
Therefore, such a bottle-shaped container is sequentially nolded by a process having the steps of injection-r.lolding the piece, removing the piece thus injection-molded, and clampiny the piece in a blow~molding machine for blow-molding the same.
It is desired to automate all these steps to complete the molding process of such a bottle-shaped container. How ever, a considerably thick gate is integrally formed at the piece thus injection-molded owing to polyethylene terephthalate characteristics, and this gate of the piece is manually sep-arated with an exclusive cutter.
However, since the injection-molding process takes much longer time than the blow-molding in one molding step and the piece thus injection-molded is not so large, there are pro-duced a number of such pieces even in one moldiny process.
Accordingly, it requires farther longer time to completely fabricate a bottle-shaped container when numerous pieces thus injection-molded are manually separated from their gates in-depenclently resulting in remarkably inefficient productivity.
SUMMARY OF THE INVENTION:
The present invention provides a device for removing and conveying an injection-molded piece in an apparatus for fabri-cating a bottle-shaped blow-molded container of a biaxially oriented plastic by essentially consisting of a piece removing unit for holding the gates of numerous cylindrical pieces with bottoms molded by sequential injection-molding steps of an injection molding machine and moving them aside from the machine, a gate cutting unit ~or separating the gates of the pieces thus removed, and a cooler for cooling the pieces to room or less than room temperature as predetermined.
An object of the present invention is to provide a device for removing and conveying an injection-molded piece for a bottle~shaped blow-molded container of polyethylene terephthalate immediately after the molding process from an injection-molding machine and to a biaxially orientation blow-molding machine which can simultaneously remove the pieces with bottoms without scratches from the molds of the injection-molding machine.
Another object of the present invention is to provide a device for removing and conveying an injection-molded piece for a bottle-shaped blow-molded container of polyethylene terephthalate immediately after the molding process from an injection-molding machine and to a biaxially orientation blow-rnolding machine which can hold numerous pieces thus injection-; molded via a base plate without altering their array and can rapidly convey them to a gate cutting unit.
Still another object of the present invention is to pro-vide a device for removing and conveyiny an inject.ion-molded piece for a bottle-shaped blow-molded container of polyethylene terephthalate immediately after the molding process from an injection-molding machine and to a biaxially orientation blow-molding machine which can cool the pieces thus injection-molded to predetermined tempera.ure during piece conveying time in order to make the heating conditions of the pieces immediately before the biaxially orientation blow-molding process uniform.
The parent application is directed to an apparatus Eor removing an injection-molded piece having a cylindrical shape '7~6 with a bottom for use in a bottle~sha~?ed blow-molded container, of polyethylene terephthalate immedia-tely af-ter the molding process from an injection-molding machine and to a biaxially oriented blow-molding machine comprising^
removing means supported by and movable along a rail installed over the injection-molding machine and elevationally movable relative thereto for removing the piece from the injection-molding machine and moving the same to a gate cutting means;
gate cutting means for cutting a gate integrally projec-ting from the bottom of the piece removed by said removing means; and, means for cooling the molded pieces after the gate has been removed, said cooling means comprising a conveyor for moving said pieces and having a confined area therearound pro-vided by a cover plate for use in cooling the piece cut from the gate by said gate cutting means with cooling air fed into said confined area through a cooling air inlet.
The present divisional app]ication is directed to a device for cooling and conveying pieces after they have been molded in a molding machine comprising:
an endless conveyor for conveying the mold ~ieces in sequence from one position to another;
a confined area provided by a cover substantially enclosing said conveyor;
a cooling air inlet in said cover for introducing cooling air into said confined area to lower the hot pieces to a pre-determined temperature; and, deflector means in said confined area, adjacent said cooling air inlet, for distributing the cooling air within said confined area.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other objects and features of the present in-vention will become apparent from the following description of the preferred embodiments of the present invention when reading with reference to the accompanying drawings, in which:
: Fig. 1 is a side view of a preferred embodiment of the device in an orientation blow-molding process line including removal of piece preformed in an injection molding machine accor-ding to the present invention.
7~26
2 I~'ig. 2 is cl view showil-g tlle mol,}in(J se~uence of
3 the pieces in -the process li~e ~ccor(]in(J to the present
4 invention;
Fig. 3 is a ~artial fr~rlt view of the clevice for 6 ! removing tlle pieces from the in~ection mo~dinq machine 7 ; according to -the present inverltiorl;
8 ~ E~ig. 4 is a side view of the clevice shown in Fig. 3;
9 Fig. 5 is an expanded front view of the base plate of the injection-molded piece removing unit in the device 11 of the present invention;
12 Fig. 6 is a side view of the base plate shown in Fig. 5;
13 Fig. 7 is ~ sectiollal view ol the unit shown as 14 taken along the line VII-VII in Fig. 5 Fig, 8 is a sect:ional view of the base plate taken 16 along the line VIII-VIII in Fig. 6;
17 Fig. 9 is a sil~e view of the gate cutting unit of 18 l, a preferred embodiment of the present invention used for 19 ll cutting the gate of the piece injection molded;
I Fig. 10 is a front view of the gate cuttirg unit 21 shown in E'ig. 9;
22 Fig. 11 is a front view of a preferred embodiment ~ ~, of the injection molded piece intermittently lowering 24 mechanism of the present inventioll used for the gate cutting unit;
26 ~ Fig. 12 is an enlarged plan view of the cutting 27 portion in the gate cutting unit;
28 Fig. 13 is an enlarged front view of the cutting 29 portion shown in Fig. 12;
~' Fig. 14 is a sectional view of the cutting portion 7~6 ; - 7 -taken along the line XIV-XIV i~l ~'ig. 13;
2 Fig. 15 is a sectiol1al view of t-he cuttirlg portion taken dlorlg the line XV-XV in Fig. 13;
~ig. 16 is a longitudinal si~e sectional view of a pre~erred embodiment of the cooler o~ the present 6 ~ invention used for the device of the present invention;
,: I
7 1 and ~ Fig. 17 is a sectional view of the cooled taken 9 along the line XVII-XVII in Fig. 16.
11 DETAIL~D DESCRIPTION OF T~IF. PRE~'ERRED EMBODIMENTS
12 , Referring now to the drawings, particularly to 13 Fig. 1 showing a side view of the biaxially orierltation 14 ~ blow molding process li-e employing the principle of the ~resent invention, wherein like reference numerals designate 16 the same parts in the followincJ views, an injection 17 l molding machine 10 has an injection-molded piece remo~ing 1~ 1 unit 11, and a yate cutting unit 12 provided aside from 19 ll the piece removlng unlt 11. A belt conveyor 13 and 20 ! a cooler 14 follow to the gate cutting unit 12. Next to 2l the cooler 1~ are sequentially disposed a conveyor 15, 22 an aligning unit 16, and an orientation blow molding machine 17 including a heater (not shown)~
The injection molding machine 10 molds numerous cylindrical pieces 18 each with a bottom.
26 As shown in Fiq. 2, each of the pieces 18 has 27 a prefinished neck portion 19 at the opening side thereof, 28 and a gate ~0 projecte~ integrally from the center of the 29 ' bottom thereof. The gate of the piece 1 a is cut from the ' piece 18 by the gat~ cutting unit 12~
'i 1, 7~
1 The pi,ece 18 is then fed througll the se~ue~lt :ial units 2 described above, then to a jic~, heat:ecl by ~he lle~ter ~rlo~:
shown) while beiny support.ed by tlle ~ , tl~ell oricnted ~ longitudinally in the orientatioll blow molding machine 17,
Fig. 3 is a ~artial fr~rlt view of the clevice for 6 ! removing tlle pieces from the in~ection mo~dinq machine 7 ; according to -the present inverltiorl;
8 ~ E~ig. 4 is a side view of the clevice shown in Fig. 3;
9 Fig. 5 is an expanded front view of the base plate of the injection-molded piece removing unit in the device 11 of the present invention;
12 Fig. 6 is a side view of the base plate shown in Fig. 5;
13 Fig. 7 is ~ sectiollal view ol the unit shown as 14 taken along the line VII-VII in Fig. 5 Fig, 8 is a sect:ional view of the base plate taken 16 along the line VIII-VIII in Fig. 6;
17 Fig. 9 is a sil~e view of the gate cutting unit of 18 l, a preferred embodiment of the present invention used for 19 ll cutting the gate of the piece injection molded;
I Fig. 10 is a front view of the gate cuttirg unit 21 shown in E'ig. 9;
22 Fig. 11 is a front view of a preferred embodiment ~ ~, of the injection molded piece intermittently lowering 24 mechanism of the present inventioll used for the gate cutting unit;
26 ~ Fig. 12 is an enlarged plan view of the cutting 27 portion in the gate cutting unit;
28 Fig. 13 is an enlarged front view of the cutting 29 portion shown in Fig. 12;
~' Fig. 14 is a sectional view of the cutting portion 7~6 ; - 7 -taken along the line XIV-XIV i~l ~'ig. 13;
2 Fig. 15 is a sectiol1al view of t-he cuttirlg portion taken dlorlg the line XV-XV in Fig. 13;
~ig. 16 is a longitudinal si~e sectional view of a pre~erred embodiment of the cooler o~ the present 6 ~ invention used for the device of the present invention;
,: I
7 1 and ~ Fig. 17 is a sectional view of the cooled taken 9 along the line XVII-XVII in Fig. 16.
11 DETAIL~D DESCRIPTION OF T~IF. PRE~'ERRED EMBODIMENTS
12 , Referring now to the drawings, particularly to 13 Fig. 1 showing a side view of the biaxially orierltation 14 ~ blow molding process li-e employing the principle of the ~resent invention, wherein like reference numerals designate 16 the same parts in the followincJ views, an injection 17 l molding machine 10 has an injection-molded piece remo~ing 1~ 1 unit 11, and a yate cutting unit 12 provided aside from 19 ll the piece removlng unlt 11. A belt conveyor 13 and 20 ! a cooler 14 follow to the gate cutting unit 12. Next to 2l the cooler 1~ are sequentially disposed a conveyor 15, 22 an aligning unit 16, and an orientation blow molding machine 17 including a heater (not shown)~
The injection molding machine 10 molds numerous cylindrical pieces 18 each with a bottom.
26 As shown in Fiq. 2, each of the pieces 18 has 27 a prefinished neck portion 19 at the opening side thereof, 28 and a gate ~0 projecte~ integrally from the center of the 29 ' bottom thereof. The gate of the piece 1 a is cut from the ' piece 18 by the gat~ cutting unit 12~
'i 1, 7~
1 The pi,ece 18 is then fed througll the se~ue~lt :ial units 2 described above, then to a jic~, heat:ecl by ~he lle~ter ~rlo~:
shown) while beiny support.ed by tlle ~ , tl~ell oricnted ~ longitudinally in the orientatioll blow molding machine 17,
5 I further ori.ented la~erally ln the ~oldi.ng machine 17, and
6 thus molded finally to a bottle-shapecl container 21 of
7 ~ a biaxially orientation blow-molcled plastic as exemplified by the preferred embodiment according to the present ~ ~; invention shown at the rightmost part il~ Fig. 2.
'~ Each of the respective units in the piece molding 1I p~-ocess line cons~ructed according to the present invention 12 will be described in detail.
13 Piece Removing Un_t l~ , Fiqs. 3 through 8 show the detailed configuration 15 , of preferred embodiment o the p.iece removing unit 11 16 according to the present inven-tion. The piece removing 17 j unit 11 has a rail 22 fixedly installed perpendicularly ~ over a mold 50 in the injection molding machi,ne 10, l~ ; moving means 23 laterally movable to the left or right 20 ' along the rail 22, and a base plate 24 elevationally ~I movably hung from and moving means 23 integrally with 22 , a holding mechanism (not shown).
The base plate 24 is constructed to make a flat 2~1 front plate 25 contact with a flat rear plate 26 in 2r> relatively slidable manner upon telescopic movements 2h of a hydraulic cylinder 27 with a piston rod 57 and to 27 thus hold or release the piece l8 to be molded to a bottle-shapcd container of polye~hylelle terephthalate resin at ~ , the g~te 20 projected from the ~enter of the bott.om of 3~) the piece 18 by means o~ the relati.ve slide therebetween, 7~6 g 1, 1 as also referred ~o Fic~. 6.
2 , qlhe front plaLe 25 is dispose~l Lc~ face a malc Mold 51 (Fig. 3) opened at the fror~t. surface in the injection moldiny machine 11 and i~; conci~ructed to have a number of longitudinally elongated holes 28 perforated and arranged in the same manner an~ number as those 7 of a number oi cores 52 projected from the mold 51 (Fig. 5).
'~ Each of the respective units in the piece molding 1I p~-ocess line cons~ructed according to the present invention 12 will be described in detail.
13 Piece Removing Un_t l~ , Fiqs. 3 through 8 show the detailed configuration 15 , of preferred embodiment o the p.iece removing unit 11 16 according to the present inven-tion. The piece removing 17 j unit 11 has a rail 22 fixedly installed perpendicularly ~ over a mold 50 in the injection molding machi,ne 10, l~ ; moving means 23 laterally movable to the left or right 20 ' along the rail 22, and a base plate 24 elevationally ~I movably hung from and moving means 23 integrally with 22 , a holding mechanism (not shown).
The base plate 24 is constructed to make a flat 2~1 front plate 25 contact with a flat rear plate 26 in 2r> relatively slidable manner upon telescopic movements 2h of a hydraulic cylinder 27 with a piston rod 57 and to 27 thus hold or release the piece l8 to be molded to a bottle-shapcd container of polye~hylelle terephthalate resin at ~ , the g~te 20 projected from the ~enter of the bott.om of 3~) the piece 18 by means o~ the relati.ve slide therebetween, 7~6 g 1, 1 as also referred ~o Fic~. 6.
2 , qlhe front plaLe 25 is dispose~l Lc~ face a malc Mold 51 (Fig. 3) opened at the fror~t. surface in the injection moldiny machine 11 and i~; conci~ructed to have a number of longitudinally elongated holes 28 perforated and arranged in the same manner an~ number as those 7 of a number oi cores 52 projected from the mold 51 (Fig. 5).
8 ~ Each of the holes 28 has a predetermined length of th~
~ , extent capable of receiving the gate 20 of the piece 18 O ~i at the bottom thereof. A number of bearers 29 are protruded from the front surface of the front plate 25 12 'I directly under the re~pective holes 28 to enable themselves 13 to carry the respectlve pieces 18 when the gates 20 14 l~ enter the respective holes 28. Thus, each of the bearers 1 29 are projected at the position lower by substantially 16 ~I radius of the piece 1~ than the bottom of each of the !! holes 28.
18 ' Tn the preferred embodiment also shown in ~ig. 7 7 19 the rear plate 26 is disposed to make slidable contact '' with the front plate 25 at the back surface thereof and 21 ,l, is constructed to have a number of spill holes 31 22 1l perforated and arranged correspondingly at the lower 2~ 1 portions of the respective holes 28 of the front plate 2~ , 25 in such a manner that each of the gates 20 of the pieces 18 may not collide at the top thereof with the 26 rear plate 26 when it enters each of the holes 2~ so 27 i that each of the ~ates 20 may completely enter the hole 28 ; 28 of the front plate 25.
29 A holder 32 is provi~e~ at the upper portion of 1 each of the holes 31 to be slidable ill the hole 28 of i !
~4'~;~6 l the front ~la~e 25. J`i~e holcler 31 In~llce~i dt the f~on~ ~nd rear surfaces thereof surface contacts w~tl~ e inside s~lrf~(-es 3 of the front alld rear pla~es 25 and 2~" ~ e~tively ir-1 slidable manrer to be assembled ti<3~ltly ~-ith tlle fronL
and rear plates 25 ancl 26.
~s also shown in Eig. 7, tt~e holder 32 has a compres~ion 7 ; spring 32a fitted therein, a gate holding piece 32b ~ ~ telescopically slidably inserted thereinto, a balance spring
~ , extent capable of receiving the gate 20 of the piece 18 O ~i at the bottom thereof. A number of bearers 29 are protruded from the front surface of the front plate 25 12 'I directly under the re~pective holes 28 to enable themselves 13 to carry the respectlve pieces 18 when the gates 20 14 l~ enter the respective holes 28. Thus, each of the bearers 1 29 are projected at the position lower by substantially 16 ~I radius of the piece 1~ than the bottom of each of the !! holes 28.
18 ' Tn the preferred embodiment also shown in ~ig. 7 7 19 the rear plate 26 is disposed to make slidable contact '' with the front plate 25 at the back surface thereof and 21 ,l, is constructed to have a number of spill holes 31 22 1l perforated and arranged correspondingly at the lower 2~ 1 portions of the respective holes 28 of the front plate 2~ , 25 in such a manner that each of the gates 20 of the pieces 18 may not collide at the top thereof with the 26 rear plate 26 when it enters each of the holes 2~ so 27 i that each of the ~ates 20 may completely enter the hole 28 ; 28 of the front plate 25.
29 A holder 32 is provi~e~ at the upper portion of 1 each of the holes 31 to be slidable ill the hole 28 of i !
~4'~;~6 l the front ~la~e 25. J`i~e holcler 31 In~llce~i dt the f~on~ ~nd rear surfaces thereof surface contacts w~tl~ e inside s~lrf~(-es 3 of the front alld rear pla~es 25 and 2~" ~ e~tively ir-1 slidable manrer to be assembled ti<3~ltly ~-ith tlle fronL
and rear plates 25 ancl 26.
~s also shown in Eig. 7, tt~e holder 32 has a compres~ion 7 ; spring 32a fitted therein, a gate holding piece 32b ~ ~ telescopically slidably inserted thereinto, a balance spring
9 ~ 32c fi~ted in the gate holding piece 32b, a guide pin 32d li) slidably inserted through the holc~er 32 and partly at the l1 gate holdirlg piece 32b, and a guide cylinder 32e for guiding 12 ; the gate holding piece 32b slidably.
13 Referring back to Figs. 3 and 4, a hy~raulic cylinder 14 27 is elevationally telescopically secured to the rear ~5 plate 26 via a bracket 33 fixedly secured to the back 16 surface at the upper poxtion of the rear plate 26 in a manner slidable at a piston rod 34.
l~ In Fig. 6, with reference to the detailed relationshi ~ between the rear plate 26 and the cylinder 27, a vertical y) ~ pin 41 is secured to the si~e of the cylinder 27 and is 2~ journaled with the bracket 33 in slidable manner in such ~2 a manner that the ~ylinder 27 is relatively elevationally ~ movable with respect to the rear plate 26.
2l ~urther re~erring to Fig. 8, a franle 42 is suspended from ~5 the bottom of the Cylinder 27 and is constructed to mount 2~ a pinion 43 at the lower portion therein. A rack 35 staying 27 in mesh with the pinion 43 is connected to the lower end 2~ Of the piston rod 34 telescoped with the cylinder 27, and 2~ i5 also secured at the lower end thereof through a bracket 3() ' 36 to the back surface at the lower portion of the rear "
L'72~
I I plate 26 rrh~ls/ as the rcar p1ate 2fi bra(ket 33, ~istor rod 34, rack 35 ~ d ~raclcet 3G are :irlte~lrclLly as~;elnble~
~ via the pins or tlle llke, the rear p1ate 2G cal- be 4 elevatiollally moved witl~ r~s~ t to t~le cylirl(ler 27 upon telescopic movemellts of the cylinder 27 at ~he pistorl rod 34.
Witll reference back to ~ig. 6, a rack 53 is dispoi~ed 7 l to face the rack 35 connected to the ~iston rod 34, an~
8 is assembled to stay in mesh with the pinion 43 sli~ably a in the frame 42, and is further integrally ~lxed throug!-lO l a connecting pin 54 movably inserted irlto a longitudin~lly ll elongated hole 37 perforated at the lower portion of the 12 rear plate 26, to the front plate 25.
13 The base plate 24 is thus co~lpled with the moving 14 I means 23 as was heretofore described. ~s obviously understood also from Fig. 8, the piston rod 34 is suspended 16 f~om the cylir~der 27 in the state as ShOWIl in Figs. 8l 5, 17 ~ and 6. Accordingly, when the ~Lston rod 34 is hydraulically l~ I retracted into the cylinder 27 upwardly, the pinion 43 19 i stayiny in mesh with the rack 35 connected thereto turns 2() as designated ~y an arrow in Fig. 6 to thus cause the rack 21 53 integral with the front plate 25 to downwardly move 22 as indicated by an arrow in Fi~. 6. The front and rear 23 ~ plates 25 and 26 relatively slidably move by means o 24 such operations of the piston rocl 34 telescoped with the ! cylinder 27. Therefore, the hole 37 of the rear plate 26 26 for movably receiving the pin 54 for connecting the rack 27 53 to the front plate 25 must have the length of the 28 extent th~t the pin 54 may not be obstructed by the relative 29 elevational movements oE the front and rear plates 25 and 26.
'7'~
, - 12 -1 In another respe~ct of the relat~ive elevatior1al 2 . movenlents of ttle iront arld rear ~>lake~i ~r) ,~n(~ 2G, ';i~ f~
the cylinde 27 is fixedly secured to an overhe~d moving 4 mechanism 60 as will ~e hereinafter desclibed in more S detail, the rear p1a~e 26 movcs llpwar(11y with respe~t to the cylinder 27 and the front plate 25 ~Ipon retraction of 7 ' the piston rod 34 with the cylinder 27. In other words, 8 the front plate 25 and the cylinder 27 tllemselves do not 9 move at all.
" As a result of this movements of the front and 11 , rear plates 25 and 26 of the base plate 24, when the 12 ~I gate 20 of the piece 1~ is inserted into the gap between 13 ,I the lower end surface o the hole 28 of the front plate 14 l 25 and the bottom surface of the gate holding piece 32b -the holder 32 while the gap is su~ficiently openecl, 16 namely the piston rod 34 is upwardly retracted with the 17 cylinder 27 and the piston rod 34 is thell extended downwarclly 18 from the cyliner 27, the rear plate 26 is relatively 19 ' elevationally upwardly and -then downwardly movcd witll ~ respect to the front plate 25 to thus cause the gate 20 21 ' of the piece 18 to be held between the lower end s~rface 22 1, of the hole 28 of the front plate 25 and the bottonl surface , of the gate holding piece 32b of the holder 32.
2~ ,~ The base plate 24 thus constructed and operated as was heretofore described performs sufficiently its 26 ~ function as mounted to the moving machanism 60 as briefly shown in Figs~ 3 and 4.
2~ 'I'he rail 22 is installed over the lnjection moldillg ~ machine 10 with the opened molds to preferable position in the n~xt step, i.e., a gate separator 70, and is assem~led Witil ~l~e moving nlealls 23 Inovill(3 alol~g t}-e 2 22 via a motor 55 mounted on the mov.irl~ mc~ s 23.
3 ~ longit~ldinal (-ylincler G3 i~, llori.~orltally perpend.icularly moullted to the mov~ cJ means 23 wi~h re~ipect ~o the rail 22~ ;
. An elevati.onal. ~y].incler 64 is addtiorlally attached vertically to the front. end of the plston ro~ 56 tel~scope~ with 7 the cylinder G3. The cylinder 27 is collnectecl at the wpper end thereof to ttle lower end of the piston ro~ 57 telescoped g wi~h the cylinder 64, as obviously disclosed in Fig. 3.
I0 . Therefore, the base plate 24 can laterally move Il along the rail 22 via the moving me~ns 23, long:i.tudinally 12 move via the longitudir)al cylil~der 63, and elevationally 13 move via the elevational cylinder 69 ir, Fig. 3.
I~ Tn operation of the device with the piece removing unit thus constructed according to the present invention, 16 ; the base plate 24 is, for example, moved upwar~lly by the 17 telescopic operation of the cyLinder 64, is approached 18 ¦ to the movi~g means 23 by the operation of the cyli.nder 19 l 63, and then disposed over the molds of the illjectlon ~ moding machine 10 by the movlng means 23.
21 In the meantime, the pieces 1 a formed immediately 2~ after the molding are adhered to the corresponding cores ~3 '~ 52 projected from the male mold 51 opened in the injec-tion 24 molding machine 10, The cylinders 63 and 64 are telescoped 2~ to face the front plate 25 at predetermined posit.ion 26 with the surface of the mold 51. The cylinder 63 is 27 further operated to approach the base plate 24 to the 28 mold 51 in order that the gates 20 of the respective 29 l pieces 18 ma~ enter correspondirlg holes 28 of the frorlt 3u . plate ~5 as was previously described.
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7~6 ' - 14 ,, , 1 Tllen, the gates 20 o~ th~ respective piec~s 18 2 are held respectiv~y between th(~ hol~ers 32 and the 3 front plate ~5 by the telescopic operation of the cylinder 4 27. Then, the cylir,(ler 63 is telescope(-l to hori~(,ntally lraw the pieces 18 from the respective cores 52 of the mold 51. However, as a matter of course, since the pieces 7 18 are tightly adhered to the respective cores 52 of the 8 mol~ 51, it is apprehended that, if they are held between 9 the holders 32 and the frorlt ~late 25 by elevationally rnoving the front plate 25, they may deform. ~ccordirgly, 11 only the rear plate 26 is constructed to elevationally 12 nlove with respect to the front plate 25 rcla-tively so 13 tllat the holes 28 oE the front plate 25 disposed accura-tely 1~ I with the respective pieces 18 as coupled with th~
respective cores 52 of the mol~ 51 may not displace.
16 Af ter the pieces 18 are thus drawn from the base 17 plate 24, the latter is raised by the cylin~er 64, and 1~ ' is moved over the gate separator 70 as examplified to be 19 faced with piece holders 71 of the piece separator 70 2~) l by the telescopic operations of the cylinders 63 and 64.
21 Then, the gates 20 of the respective pieces 18 will be 22 placed on the respective piece holders 71 and be cut ~ I as will be hereinafter described in more detail.
24 Sir~ce -the piece removing unit is thus constructed arld operated~ it can remove a number of the pieces 18 26 to be molded for bottle~shaped containers of polyethylene 27 terephthalate resin immediately after the molding and 2f3 convey them to next process step ~tithou-t breakage of the 29 array at the molding. Since the piece r~moving unit further draw the pieces from the respective cores of the I
1 1 mold w~lile hc)l~in~ t~lt~ cs of tlle )e;~)ective ~i~ces ar,d convey thern as they are, i.t may no~ scr~ .ch ~ny of the ;3 pieces 18 which are fe~si~l.y subject~d ~o scratctles as 4 formed immed.iatel~ after t~le mo].~li.r Gate Cuttin~_~nit l`he qate cutting unit 12 constructed according to the 7 present invention is constituted to receive ~he pieces 18 integral with the respective gates 20 fron~ the injection ~ ~. molding machine 10 hori~ontally in t~e same array as that ` at the inject.ion nloldin~l time, intermittently convey 11 a number of the p:ieces to the next process step until the ~2 next pieces 18 are injection-molded from the injection 1~3 molding machine 10, and cut the gates 20 of the respective 1~ pieces 20 during the stoppage of the intermi-ttent conveyance of the pieces 20.
16 l'he gate cutting unit 12 has a p.iece conveyor 72 i7 for intermittent3.y movin~ the respective piece holders 71 18 ~ for hori~ontally receivirlg a num~er of the pieces 18 of the 19 same array as that at the injectior, molding time, at 2( ; predetermined distance and speed, and a gate cutter 74 21 for cutting the gates 20 of the respective pieces 18 22 conveyed to the cutting position by the piece conveyor 72 23 during the stopping period o~ the piece holders 71.
The components of the piece cutting unit 12 will be described further in de-tail.
26 Piec Conve~or 72 27 Fi.g~. 9, 10, 11 and 13 show preferred embodiment of 2~ the piece conveyor 72 of the piece cutting unit 12 according 29 to the present invention, which is oper~ted to draw a number of the pieces from the injection molding machine, 7;~
1 and, more parti,cularly, Lo draw hori~olltally the pieces 2 18 (16 pieces as exelnL~lified in tile ~;~iyu~es) in the 3 ' same array as t.~lat at, the injection mol~ing time arld 4 ; sequentially convey the pie~es 18 (4 pieces as exernpliied ~. in t}liS embodinlent) to the cuttiny position ir,termitten~ly 6 ~; until the next pieces are completely molded in the ? ' injection molding machine.
~ ' In the preferred embodiment of the piece conveyor 9 ~ 72 as shown, the piece conveyor 72 assembles the piece holders 71 for horizontally holdiny the pieces 18 at 11 ,, predetermined interval with each of chains 91 installed 12 vertically respectively between drive sprockets 88 and 13 ' guide sprocket 90 mounted on a base 73, and arranges 14 . a required number of a set of the drive and guide sprockets lS 88 and 90, chai.n 91 and piece holders 71 in parallel~
1~ The piece holders 71 are arranged entirely in the 17 same array as that of th~ cores 52 v:E the mold 51 in the 18 1 in~ection molding machine 10 at the chain 91 in order to 19 ', draw the pieces 18 injection r,lolded and to convey them 2~ in the same array onto the piece holders 71 as that at 2~ the injection molding time~
22 Each of the chains 91 (4 chains as exemplified in ~ , the embodiment) of predeterrnined number for assembling 2~ the piece holders 71 at predeter~ined interval is vertically 2~ engaged between the drive sprocket ~8 installed on the 26 base 73 aod the guide sprocket 90 installed at a mounti11y 27 frame 89 stood on the base 73 directly above the sprocket 88. , 28 Each of the drive sprockets 88 is fixedly secured 2~ t.o a drive shaft 86 ro-tatably secured via a beariny 87 3~ onto the base 73, and is driven through a reduction gear 80, l : torque limit~r 81, .in~ex uni.t 82, out~-ut ~3e3r 83, ar1(l 2 trallsnlisSiOII gear 84 V.itl a drive ~3ear ~5 secure~l to one er 3 of the drive shat 86 from a prime mover, as specifically 4 illustrated in F:ig. 9.
~lthough the rotating force of the prirne mover is 6 continuous constant speed in this case, it is c--nverted 7 to an intermittent rotating operation of predetermined 8 `~ duration through the inclex unit 82 and is thus transmitted 9 to the drive shaEt 86.
T~e rotatin~ amourlt of the drive shaft 86 as ll I intermittently transmitted per once is so set that the 12 chain 91 engaged over between the sprockets 88 and 90 13 moves in the distance equal to .the spacin~J of t~e piece l~ holders 71 mounted at the cllain 9l.
Accordingly, each of the pi.ece holders 71 will 16 stop always at predetermined position where the previous 17 I piece holer 71 is stopped by the intermittent movement, 18 `I that is, the respective piece holders 71 will sequentially 19 ' stop at predeter~ined stoppin~ positions in order.
~o ' In other words, all the piece holders 71 may always stop 21 entirely at the same array and interval as those of the 22 pieces 18 drawn from the mold 51 in the injection molding ~ machine 10.
24 ~ stopper plate 93 is fixedly disposed for se-tting .~ ' the backward moving liMit: of the l1eld pieces, at the back 26 of the piece holders 71 disposed at the side for receiving 27 the pieces 18, at the front side of -the piece hol~ers 71 28 mounted at the chains 91 vert.ically engaged over betw~en ~4 the sprockets 88 and 90, and particula.ly at the back of the ! piece holders 71 disposed at the cut~ing pisition.
, The stopper plate 93 is cor)s~ructed dnd installed Z to prevent the pieces 18 sup~lied orlto the pi~ce holders ~ 71 from backward~y displ~cing to drop by ~he vibratiorl 4 caused by the movements o~ the piece holders 71 and to restricti ~ , the pieces 18 at the cuttirlg posi--ion. More particularly, 6 ~ when the pieces 18 are inserted into piece head inser~in-3 7 , recesses 113 Or the qate cutting unit 12 ~t the cutting 8 ~ position as will be hereinafter described in more de~ail, ~ they may not largely move backwardly on the piece holders l() ~ 71 by the inserting Eorce.
l1 '; Gate Cutter 74 -12 In the preferred embodiment shown in Figs. 9 through 13 ,; 15, when the lowermost piece holder 71 of the holders 71 l~ receiving the pieces 18 drawn irl the same attitude and ~5 array as those at the molding time from the injection 16 ; molding machine 10 via the piece removing unit 11reaches its 17 ,I cutting position as downwardly moved by one intermittent 18 ' movement after the recep-tion of the pieces 1~, the gate 19 'I cutter 74 is operated -to cut the gates 20 of the pieces 2~ ' 18 held by the piece holders 71 stopped at the cutting ~l ' position during the stopping period of the piece holders 22 1 71 to separate the gate 20 from the piece 18.
~3 , ~ slide base 102 is ~lidably assembled along a guide 2~ ~i rail 103 secured via a bracket 104 to the base 73 horizontally ~ along the axes of the pieces 18 held by the respective 26 piece holders 71 at the front as rightwardly in Fig. 9 of 27 the mounted piece holders 71 over the base 73.
2~ That is, the slide base 102, is mounted longitudinally 29 ,l movably back and forth toward the piece~ 1~ held by the piece holders 71.
72~ 1 1 '~ The piston rod telescoped with a cylin(ler 100 i.x~d]y 2 secure~ to a bracket 101 fixed onto the upper ~ront er as the rightmost en(l in l~.ig. 9 o~ the ~)ase 73 .is conrlected 4 ~ to the slide base 102 to slidabl.y move the slide base 102 ~ al.ong the guide rail 103 by the telescopic movements of the 6 piston rod telesco~ed with the cylinder 100.
7 l, A piece head holder 111 is secured via mountiny ~ I plates 114 and 11S onto the upper surface of the slide base 9 ll 102 to ace the piece 18 disposed at i-ts cutting position at the front. In the preferred embodiment particularly ll shown in Fig. 15, the piece head holder 111 has a center 12 .I hole opened to protrude only the gate 20 of the piece 18 l3 , at the bottom of short cylindrical shape column an~ -to 1~ make tight contact with the head of the piece 18 at I the bottom in shape.
A cushion memher 112 is fixedly inserted into the 17 ll piece hea~l holder 111 to hold the piece 18 to be inserted i.nto the piece head holder 111 without any scratch nor 19 ' fluctuation. Thus, a piece head inserting recess 113 i5 2~ formed by ~he cushion mem~er 112 and piece head holder 21 fixture within the piece head holder 111.
22. , As more specifically exemplified in Fig. 10~ a cutter cylinder 105 is secured fixedly to one side end as the leftmost erld shown of the upper surface of the slide base ': 102 by a mounting fixture 106 separately from the piec~ head 2~ , holder 111. ~ rec-~ilinear square-cross sectional bar-like 27 slide bar 108 is connected at the end thereof to the end of 28 the piston rod telescoped with the cylinder 105.
29 ,~ This slide bar 108 ls so assembled by a guide hracket 10 fixedly secured onto the upper surface of the sl.ide base 102 I, i as to be movably in the h~rizontal direc-tion ~erpencli.cular to the axes of the ~ieces lS held by the ~iece holders 71, i.e., along the axes of the slide bar 108.
A cutter 110 is secured via a mounting fixture 109 to the slide bar 108 at the position facing with the piece head holder 111 in a manner making close contact with the ront sur~ace of the piece head holder fixture at the cutting edge thereof. The cutter 110 makes at one surface thereof including the cutting edge contact with the front surface of the piece head holder 111 to slidably move the front surface of the pieca head holder 111 by the movement of the slide bar 108 upon telescopic operation of the cutter cylinder 105.
In operation of the gate cutter 74 thus constructed according to the present invention, when the pieces 18 are drawing from the injection molding machine 10, are convayed to the piece holder 71 in the attitude that the gates 20 integral therewith are directed forwaxdly by the piece removlng unit 11, and then the piece removing unit 11 is retracted from the pieces 1~, the respective piece holders 71 are intermittently moved to ~0 cause the lowermost holder 71 for holding the piece 18 to be stopped at the cutting position. When the piece holder 71 is thus stopped at the cutting position, the cylinder 100 is tele~coped to move forward the slide base 102 along the guide rail 103 to urge the head o the piece 18 disposed at the cutting position tightly within the piece head inserting recess 113. Since the piece 18 thus held on the piece holder 71 makes contact at the rear end thereof with the stopper plate 93 as was previously described, it is tightly inserted at the '7~
1 heacl tllereof in~o tlle piece 1.( ~ld i.rl~;e~ r~.~c t~s~ },y 2 the forward moven~(?nt o[ the slide bas{ 1()2.
~1 When tl~e ~ b~1se 1~)2 is move(l ~orwar(lly sc> tl~lt 4 the piece 18 is inc;el~ed at thc hea~t tilc~reo~ ti(1lltly in~:(J
the piece head insertinq recess 113, t!~e cutter cylinder h 105 is telescope~l to move forwar-31y ~ e ~ le bar 1()8 as 7 in rightward ~1 irc~ctiGn in ~ 3s. l2 an-:l 13 to thus cause the cutter 1l0 nlovil1g integrally wilh the sli~e bar 108 ~ to separate the c3ate 2() projected fronl the front surface of -the piece head holder 111 from the piece 18.
1l When the cut~er 1lO completely cuts to separate 12 the gate 20 from the piece 18, the 51i~.1e bar 106 is l~ backwardly returnecl inteqr~lly witll tlle cutter 110 in !~ a manner of reverse oper~tion of the cntter cylirlder 105 , to the above. 'rhen the cylil1der lO0 is reversely telescoE-ed I to tlle above to backwardly move tl1e sli(le base 102 to 17 the original position.
l~ It is noted that the res~ective movements of the l~ slide base 102 Erom Lhe forward movement to the backward 2() movement must be executed during the stopping period of 2I the piece holders 71 in intermittent operation.
22 The pieces 18 supplie~ by one operation of the 2~ piece removing unit 11 are se~uential1y cut at the gates 2~ ~0 thereof as described above. It is also noted that all such ~ieces 18 rnust be completely separated from the ?f, 3ates 20 thereof until the pieces 18 formed in the next 27 injection mold;ng process are therl supp1ied thereto.
2ff In the Ineanti~e, the piece holders 71 must ~e stopped 2~ when they receive the pieces 18 from the piece removing unit 11. Since the time from when the pieces 18 are inserted 2~i l into the re~pective piece IIol(Iers /1 by tI~e ~ie-c rcm(Jvi 2 unit 11 to when the piecc relllovin-J unil ~ back~ardl~
3 returne~ is lollger than the sto~ tiIn~ of tlIe 1 intermitten~ opera~icn require(~ to ~ie-3ue~rItially c~t the gates 20 from the pieces 18 Or pre(1eterrl~ine(I number as supplied, it must stop the intermittent operation of the 7 plece holders 71 for predetermirle(1 time when the pieces ~ 18 are conveyed from the piece renloving unit 11 to the 9 piece holders 71.
There may variously be considered means for stopping ll the intermitterIt operation of -the piece lIol~Iers 71 Eor l2 predetermined time. The most sinlple means, for example, 13 has preferably an electromagnetic clutch installed at 14 the tor~lue limiter 81 in the piece coIlveyor 72, and a linlit switch for controlling the clutch to de~ect the operation ,~ of the piece removing unit 11.
17 The pieces 18 -thus separated from their gates 2n are lowered while being held by the piece holders 7l by 19 the intermittent movement of tl1e piece holders 71, and are 2(~ then dropped on the belt conveyor 13 from the piece holders 21 71 when the piece holders 71 are tilled and reversely turned 22 at the drive sprocket 88 to be then conveyed to the next 23 cooler via the conveyor 13.
24 Cooler 2.~ Figs. 16 and 17 show preferred embodimcnt of the 26 cooler 14 according to the present inventiorI. The pieces 2~ 18 separated from their gates 20 by the gate cutting unit 2~ 12 are conveye(~ to thc cooler 14 via the belt conveyor 13 2~ as descri~e(I previously.
Reference numeral 120 de~,gnates a conveyor '7~6 inclined u~wardly in -the direction of travel from a ~lat p~late 142 located at the end of the conveyor 1~. The conveyor 120 has an endless belt 12~ extending around a pair of spaced apart pulleys 121. The belt 122 has lateral projection s-traps 123 formed at equal intervals on the outer surface thereof to convey the pieces 18 from the lower position to hiyher position as the belt moves.
124 represents a supporting plate for preventing the belt 122 from deflecting.
130 designates a cover for enclosing the belt conveyor 120, whiah cover 130 has a cooling air inlet 132 formed at the center of the top plate 131 thereof.
The cooling air is fed into the cover 130 to lower the hot pieces 18 formed immediately after the injection-molding process to predetermined low temperature thereby to prepare the pieces 18 under the optimum conditions for the bia~ially orientation blow-molding of next step at uniformly hea-ting time. It is, therefore, noted that, since the pieces 18 cannot be abruptly cooled when they are cooled to xoom tem-perature or lower predetermined temperature in the step ofconveying the pieces 18 via the conveyor 120, the cooling alr must be scattered within the cover 130 to gradually ccol the conveying pieces 18.
Therefore, a number of vent holes 133 are located in a scattering plate 134, which i9 installed in suitable space from the top plate 131 of the cover 130 within the ~over 130 to widely distribute the cooling air from the inlet 132 via the vent holes 133 in the enclosed space pro~ided by the cover 130.
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- 2~ -1 Since it is ~ppre~ )decl tl~at ~ c- Iooli.~ ir i~ ot suf~icie]ltly scatt.cred but is sup~Jli((l ol~ly Ic) the i.lltc?rior ~1 of the cover 130 from ~IIC inlet 1.~2 .i t t.lle l10].CS 1~3 are 4 perforate~ directly ull(ler the inle~ 13~ at the Scattf' plate 134, the holes 1~2 are so perforclted at the por~ior ~, as to avoid tllat diL-ectly un(~er the inlet 132 of tl-e 7 scattering plate 134.
~ Reference nunler~l 143 depicts a conveyor for feeding 9 the pieces 18 conveyed to the hiyher pO5itiOII further to the next step.
Il According to the present invention, ~s fully described 12 hereinbefore, since the device for removing an~ conveying .11~ the pieces can draw the pieces injection-molcled in ttle 11 injection mo].dincJ machine and convey them -to the gate !5 cutting unit without scratch to automatically cu-t to separate 1~ the gates from the pieces, it can shortel-l the time rec~uired 17 to cut the gates from the ~ieces, eliMinate the manual r.)ower 1~ entirely, lar~ely reducf the rnoldinc3 time to complete bottle-1'-3 shaped containers of biaxially orientation blow-molded polyethylene terephthalate resin, ena~le automation of the respective molding works to complete the bottle-shaued 2 containers, and perform without troubles with lelatively sirnple construction and operation. Furthermore, since the device of the presen-t invention can exactly convey -the pieces formed i~lmediately after the injection molcling process 2~ Witt)GUt any scratch and can cool the pieces thus conveyed to the optimum predetermined temper~ture for the heatinc3 step immediately before the biaxiall.y orientat.ion blow moldinc3 ~ process, it can prepare tlle pleces to become tll~ state ~n~ler 3() the optimum con(litions for ~ e next molclir,(3 process teE~.
j; - 25 -1 'I Although the specif.ic embodimerlts o~ the prescnt 2 1 invention have been described hereillbefore, it shoulll be ;1 understood that numerous variations thereof may be employecl 4 I without departing from the invention, and it is reiterated that the examples given as above are simply illustrative 6 1 of the device for removing and conveying the pieces.
1~ ~
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'4 .Lt l7 2n .1 .'~ .
.4 ;~f 2'~
13 Referring back to Figs. 3 and 4, a hy~raulic cylinder 14 27 is elevationally telescopically secured to the rear ~5 plate 26 via a bracket 33 fixedly secured to the back 16 surface at the upper poxtion of the rear plate 26 in a manner slidable at a piston rod 34.
l~ In Fig. 6, with reference to the detailed relationshi ~ between the rear plate 26 and the cylinder 27, a vertical y) ~ pin 41 is secured to the si~e of the cylinder 27 and is 2~ journaled with the bracket 33 in slidable manner in such ~2 a manner that the ~ylinder 27 is relatively elevationally ~ movable with respect to the rear plate 26.
2l ~urther re~erring to Fig. 8, a franle 42 is suspended from ~5 the bottom of the Cylinder 27 and is constructed to mount 2~ a pinion 43 at the lower portion therein. A rack 35 staying 27 in mesh with the pinion 43 is connected to the lower end 2~ Of the piston rod 34 telescoped with the cylinder 27, and 2~ i5 also secured at the lower end thereof through a bracket 3() ' 36 to the back surface at the lower portion of the rear "
L'72~
I I plate 26 rrh~ls/ as the rcar p1ate 2fi bra(ket 33, ~istor rod 34, rack 35 ~ d ~raclcet 3G are :irlte~lrclLly as~;elnble~
~ via the pins or tlle llke, the rear p1ate 2G cal- be 4 elevatiollally moved witl~ r~s~ t to t~le cylirl(ler 27 upon telescopic movemellts of the cylinder 27 at ~he pistorl rod 34.
Witll reference back to ~ig. 6, a rack 53 is dispoi~ed 7 l to face the rack 35 connected to the ~iston rod 34, an~
8 is assembled to stay in mesh with the pinion 43 sli~ably a in the frame 42, and is further integrally ~lxed throug!-lO l a connecting pin 54 movably inserted irlto a longitudin~lly ll elongated hole 37 perforated at the lower portion of the 12 rear plate 26, to the front plate 25.
13 The base plate 24 is thus co~lpled with the moving 14 I means 23 as was heretofore described. ~s obviously understood also from Fig. 8, the piston rod 34 is suspended 16 f~om the cylir~der 27 in the state as ShOWIl in Figs. 8l 5, 17 ~ and 6. Accordingly, when the ~Lston rod 34 is hydraulically l~ I retracted into the cylinder 27 upwardly, the pinion 43 19 i stayiny in mesh with the rack 35 connected thereto turns 2() as designated ~y an arrow in Fig. 6 to thus cause the rack 21 53 integral with the front plate 25 to downwardly move 22 as indicated by an arrow in Fi~. 6. The front and rear 23 ~ plates 25 and 26 relatively slidably move by means o 24 such operations of the piston rocl 34 telescoped with the ! cylinder 27. Therefore, the hole 37 of the rear plate 26 26 for movably receiving the pin 54 for connecting the rack 27 53 to the front plate 25 must have the length of the 28 extent th~t the pin 54 may not be obstructed by the relative 29 elevational movements oE the front and rear plates 25 and 26.
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, - 12 -1 In another respe~ct of the relat~ive elevatior1al 2 . movenlents of ttle iront arld rear ~>lake~i ~r) ,~n(~ 2G, ';i~ f~
the cylinde 27 is fixedly secured to an overhe~d moving 4 mechanism 60 as will ~e hereinafter desclibed in more S detail, the rear p1a~e 26 movcs llpwar(11y with respe~t to the cylinder 27 and the front plate 25 ~Ipon retraction of 7 ' the piston rod 34 with the cylinder 27. In other words, 8 the front plate 25 and the cylinder 27 tllemselves do not 9 move at all.
" As a result of this movements of the front and 11 , rear plates 25 and 26 of the base plate 24, when the 12 ~I gate 20 of the piece 1~ is inserted into the gap between 13 ,I the lower end surface o the hole 28 of the front plate 14 l 25 and the bottom surface of the gate holding piece 32b -the holder 32 while the gap is su~ficiently openecl, 16 namely the piston rod 34 is upwardly retracted with the 17 cylinder 27 and the piston rod 34 is thell extended downwarclly 18 from the cyliner 27, the rear plate 26 is relatively 19 ' elevationally upwardly and -then downwardly movcd witll ~ respect to the front plate 25 to thus cause the gate 20 21 ' of the piece 18 to be held between the lower end s~rface 22 1, of the hole 28 of the front plate 25 and the bottonl surface , of the gate holding piece 32b of the holder 32.
2~ ,~ The base plate 24 thus constructed and operated as was heretofore described performs sufficiently its 26 ~ function as mounted to the moving machanism 60 as briefly shown in Figs~ 3 and 4.
2~ 'I'he rail 22 is installed over the lnjection moldillg ~ machine 10 with the opened molds to preferable position in the n~xt step, i.e., a gate separator 70, and is assem~led Witil ~l~e moving nlealls 23 Inovill(3 alol~g t}-e 2 22 via a motor 55 mounted on the mov.irl~ mc~ s 23.
3 ~ longit~ldinal (-ylincler G3 i~, llori.~orltally perpend.icularly moullted to the mov~ cJ means 23 wi~h re~ipect ~o the rail 22~ ;
. An elevati.onal. ~y].incler 64 is addtiorlally attached vertically to the front. end of the plston ro~ 56 tel~scope~ with 7 the cylinder G3. The cylinder 27 is collnectecl at the wpper end thereof to ttle lower end of the piston ro~ 57 telescoped g wi~h the cylinder 64, as obviously disclosed in Fig. 3.
I0 . Therefore, the base plate 24 can laterally move Il along the rail 22 via the moving me~ns 23, long:i.tudinally 12 move via the longitudir)al cylil~der 63, and elevationally 13 move via the elevational cylinder 69 ir, Fig. 3.
I~ Tn operation of the device with the piece removing unit thus constructed according to the present invention, 16 ; the base plate 24 is, for example, moved upwar~lly by the 17 telescopic operation of the cyLinder 64, is approached 18 ¦ to the movi~g means 23 by the operation of the cyli.nder 19 l 63, and then disposed over the molds of the illjectlon ~ moding machine 10 by the movlng means 23.
21 In the meantime, the pieces 1 a formed immediately 2~ after the molding are adhered to the corresponding cores ~3 '~ 52 projected from the male mold 51 opened in the injec-tion 24 molding machine 10, The cylinders 63 and 64 are telescoped 2~ to face the front plate 25 at predetermined posit.ion 26 with the surface of the mold 51. The cylinder 63 is 27 further operated to approach the base plate 24 to the 28 mold 51 in order that the gates 20 of the respective 29 l pieces 18 ma~ enter correspondirlg holes 28 of the frorlt 3u . plate ~5 as was previously described.
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7~6 ' - 14 ,, , 1 Tllen, the gates 20 o~ th~ respective piec~s 18 2 are held respectiv~y between th(~ hol~ers 32 and the 3 front plate ~5 by the telescopic operation of the cylinder 4 27. Then, the cylir,(ler 63 is telescope(-l to hori~(,ntally lraw the pieces 18 from the respective cores 52 of the mold 51. However, as a matter of course, since the pieces 7 18 are tightly adhered to the respective cores 52 of the 8 mol~ 51, it is apprehended that, if they are held between 9 the holders 32 and the frorlt ~late 25 by elevationally rnoving the front plate 25, they may deform. ~ccordirgly, 11 only the rear plate 26 is constructed to elevationally 12 nlove with respect to the front plate 25 rcla-tively so 13 tllat the holes 28 oE the front plate 25 disposed accura-tely 1~ I with the respective pieces 18 as coupled with th~
respective cores 52 of the mol~ 51 may not displace.
16 Af ter the pieces 18 are thus drawn from the base 17 plate 24, the latter is raised by the cylin~er 64, and 1~ ' is moved over the gate separator 70 as examplified to be 19 faced with piece holders 71 of the piece separator 70 2~) l by the telescopic operations of the cylinders 63 and 64.
21 Then, the gates 20 of the respective pieces 18 will be 22 placed on the respective piece holders 71 and be cut ~ I as will be hereinafter described in more detail.
24 Sir~ce -the piece removing unit is thus constructed arld operated~ it can remove a number of the pieces 18 26 to be molded for bottle~shaped containers of polyethylene 27 terephthalate resin immediately after the molding and 2f3 convey them to next process step ~tithou-t breakage of the 29 array at the molding. Since the piece r~moving unit further draw the pieces from the respective cores of the I
1 1 mold w~lile hc)l~in~ t~lt~ cs of tlle )e;~)ective ~i~ces ar,d convey thern as they are, i.t may no~ scr~ .ch ~ny of the ;3 pieces 18 which are fe~si~l.y subject~d ~o scratctles as 4 formed immed.iatel~ after t~le mo].~li.r Gate Cuttin~_~nit l`he qate cutting unit 12 constructed according to the 7 present invention is constituted to receive ~he pieces 18 integral with the respective gates 20 fron~ the injection ~ ~. molding machine 10 hori~ontally in t~e same array as that ` at the inject.ion nloldin~l time, intermittently convey 11 a number of the p:ieces to the next process step until the ~2 next pieces 18 are injection-molded from the injection 1~3 molding machine 10, and cut the gates 20 of the respective 1~ pieces 20 during the stoppage of the intermi-ttent conveyance of the pieces 20.
16 l'he gate cutting unit 12 has a p.iece conveyor 72 i7 for intermittent3.y movin~ the respective piece holders 71 18 ~ for hori~ontally receivirlg a num~er of the pieces 18 of the 19 same array as that at the injectior, molding time, at 2( ; predetermined distance and speed, and a gate cutter 74 21 for cutting the gates 20 of the respective pieces 18 22 conveyed to the cutting position by the piece conveyor 72 23 during the stopping period o~ the piece holders 71.
The components of the piece cutting unit 12 will be described further in de-tail.
26 Piec Conve~or 72 27 Fi.g~. 9, 10, 11 and 13 show preferred embodiment of 2~ the piece conveyor 72 of the piece cutting unit 12 according 29 to the present invention, which is oper~ted to draw a number of the pieces from the injection molding machine, 7;~
1 and, more parti,cularly, Lo draw hori~olltally the pieces 2 18 (16 pieces as exelnL~lified in tile ~;~iyu~es) in the 3 ' same array as t.~lat at, the injection mol~ing time arld 4 ; sequentially convey the pie~es 18 (4 pieces as exernpliied ~. in t}liS embodinlent) to the cuttiny position ir,termitten~ly 6 ~; until the next pieces are completely molded in the ? ' injection molding machine.
~ ' In the preferred embodiment of the piece conveyor 9 ~ 72 as shown, the piece conveyor 72 assembles the piece holders 71 for horizontally holdiny the pieces 18 at 11 ,, predetermined interval with each of chains 91 installed 12 vertically respectively between drive sprockets 88 and 13 ' guide sprocket 90 mounted on a base 73, and arranges 14 . a required number of a set of the drive and guide sprockets lS 88 and 90, chai.n 91 and piece holders 71 in parallel~
1~ The piece holders 71 are arranged entirely in the 17 same array as that of th~ cores 52 v:E the mold 51 in the 18 1 in~ection molding machine 10 at the chain 91 in order to 19 ', draw the pieces 18 injection r,lolded and to convey them 2~ in the same array onto the piece holders 71 as that at 2~ the injection molding time~
22 Each of the chains 91 (4 chains as exemplified in ~ , the embodiment) of predeterrnined number for assembling 2~ the piece holders 71 at predeter~ined interval is vertically 2~ engaged between the drive sprocket ~8 installed on the 26 base 73 aod the guide sprocket 90 installed at a mounti11y 27 frame 89 stood on the base 73 directly above the sprocket 88. , 28 Each of the drive sprockets 88 is fixedly secured 2~ t.o a drive shaft 86 ro-tatably secured via a beariny 87 3~ onto the base 73, and is driven through a reduction gear 80, l : torque limit~r 81, .in~ex uni.t 82, out~-ut ~3e3r 83, ar1(l 2 trallsnlisSiOII gear 84 V.itl a drive ~3ear ~5 secure~l to one er 3 of the drive shat 86 from a prime mover, as specifically 4 illustrated in F:ig. 9.
~lthough the rotating force of the prirne mover is 6 continuous constant speed in this case, it is c--nverted 7 to an intermittent rotating operation of predetermined 8 `~ duration through the inclex unit 82 and is thus transmitted 9 to the drive shaEt 86.
T~e rotatin~ amourlt of the drive shaft 86 as ll I intermittently transmitted per once is so set that the 12 chain 91 engaged over between the sprockets 88 and 90 13 moves in the distance equal to .the spacin~J of t~e piece l~ holders 71 mounted at the cllain 9l.
Accordingly, each of the pi.ece holders 71 will 16 stop always at predetermined position where the previous 17 I piece holer 71 is stopped by the intermittent movement, 18 `I that is, the respective piece holders 71 will sequentially 19 ' stop at predeter~ined stoppin~ positions in order.
~o ' In other words, all the piece holders 71 may always stop 21 entirely at the same array and interval as those of the 22 pieces 18 drawn from the mold 51 in the injection molding ~ machine 10.
24 ~ stopper plate 93 is fixedly disposed for se-tting .~ ' the backward moving liMit: of the l1eld pieces, at the back 26 of the piece holders 71 disposed at the side for receiving 27 the pieces 18, at the front side of -the piece hol~ers 71 28 mounted at the chains 91 vert.ically engaged over betw~en ~4 the sprockets 88 and 90, and particula.ly at the back of the ! piece holders 71 disposed at the cut~ing pisition.
, The stopper plate 93 is cor)s~ructed dnd installed Z to prevent the pieces 18 sup~lied orlto the pi~ce holders ~ 71 from backward~y displ~cing to drop by ~he vibratiorl 4 caused by the movements o~ the piece holders 71 and to restricti ~ , the pieces 18 at the cuttirlg posi--ion. More particularly, 6 ~ when the pieces 18 are inserted into piece head inser~in-3 7 , recesses 113 Or the qate cutting unit 12 ~t the cutting 8 ~ position as will be hereinafter described in more de~ail, ~ they may not largely move backwardly on the piece holders l() ~ 71 by the inserting Eorce.
l1 '; Gate Cutter 74 -12 In the preferred embodiment shown in Figs. 9 through 13 ,; 15, when the lowermost piece holder 71 of the holders 71 l~ receiving the pieces 18 drawn irl the same attitude and ~5 array as those at the molding time from the injection 16 ; molding machine 10 via the piece removing unit 11reaches its 17 ,I cutting position as downwardly moved by one intermittent 18 ' movement after the recep-tion of the pieces 1~, the gate 19 'I cutter 74 is operated -to cut the gates 20 of the pieces 2~ ' 18 held by the piece holders 71 stopped at the cutting ~l ' position during the stopping period of the piece holders 22 1 71 to separate the gate 20 from the piece 18.
~3 , ~ slide base 102 is ~lidably assembled along a guide 2~ ~i rail 103 secured via a bracket 104 to the base 73 horizontally ~ along the axes of the pieces 18 held by the respective 26 piece holders 71 at the front as rightwardly in Fig. 9 of 27 the mounted piece holders 71 over the base 73.
2~ That is, the slide base 102, is mounted longitudinally 29 ,l movably back and forth toward the piece~ 1~ held by the piece holders 71.
72~ 1 1 '~ The piston rod telescoped with a cylin(ler 100 i.x~d]y 2 secure~ to a bracket 101 fixed onto the upper ~ront er as the rightmost en(l in l~.ig. 9 o~ the ~)ase 73 .is conrlected 4 ~ to the slide base 102 to slidabl.y move the slide base 102 ~ al.ong the guide rail 103 by the telescopic movements of the 6 piston rod telesco~ed with the cylinder 100.
7 l, A piece head holder 111 is secured via mountiny ~ I plates 114 and 11S onto the upper surface of the slide base 9 ll 102 to ace the piece 18 disposed at i-ts cutting position at the front. In the preferred embodiment particularly ll shown in Fig. 15, the piece head holder 111 has a center 12 .I hole opened to protrude only the gate 20 of the piece 18 l3 , at the bottom of short cylindrical shape column an~ -to 1~ make tight contact with the head of the piece 18 at I the bottom in shape.
A cushion memher 112 is fixedly inserted into the 17 ll piece hea~l holder 111 to hold the piece 18 to be inserted i.nto the piece head holder 111 without any scratch nor 19 ' fluctuation. Thus, a piece head inserting recess 113 i5 2~ formed by ~he cushion mem~er 112 and piece head holder 21 fixture within the piece head holder 111.
22. , As more specifically exemplified in Fig. 10~ a cutter cylinder 105 is secured fixedly to one side end as the leftmost erld shown of the upper surface of the slide base ': 102 by a mounting fixture 106 separately from the piec~ head 2~ , holder 111. ~ rec-~ilinear square-cross sectional bar-like 27 slide bar 108 is connected at the end thereof to the end of 28 the piston rod telescoped with the cylinder 105.
29 ,~ This slide bar 108 ls so assembled by a guide hracket 10 fixedly secured onto the upper surface of the sl.ide base 102 I, i as to be movably in the h~rizontal direc-tion ~erpencli.cular to the axes of the ~ieces lS held by the ~iece holders 71, i.e., along the axes of the slide bar 108.
A cutter 110 is secured via a mounting fixture 109 to the slide bar 108 at the position facing with the piece head holder 111 in a manner making close contact with the ront sur~ace of the piece head holder fixture at the cutting edge thereof. The cutter 110 makes at one surface thereof including the cutting edge contact with the front surface of the piece head holder 111 to slidably move the front surface of the pieca head holder 111 by the movement of the slide bar 108 upon telescopic operation of the cutter cylinder 105.
In operation of the gate cutter 74 thus constructed according to the present invention, when the pieces 18 are drawing from the injection molding machine 10, are convayed to the piece holder 71 in the attitude that the gates 20 integral therewith are directed forwaxdly by the piece removlng unit 11, and then the piece removing unit 11 is retracted from the pieces 1~, the respective piece holders 71 are intermittently moved to ~0 cause the lowermost holder 71 for holding the piece 18 to be stopped at the cutting position. When the piece holder 71 is thus stopped at the cutting position, the cylinder 100 is tele~coped to move forward the slide base 102 along the guide rail 103 to urge the head o the piece 18 disposed at the cutting position tightly within the piece head inserting recess 113. Since the piece 18 thus held on the piece holder 71 makes contact at the rear end thereof with the stopper plate 93 as was previously described, it is tightly inserted at the '7~
1 heacl tllereof in~o tlle piece 1.( ~ld i.rl~;e~ r~.~c t~s~ },y 2 the forward moven~(?nt o[ the slide bas{ 1()2.
~1 When tl~e ~ b~1se 1~)2 is move(l ~orwar(lly sc> tl~lt 4 the piece 18 is inc;el~ed at thc hea~t tilc~reo~ ti(1lltly in~:(J
the piece head insertinq recess 113, t!~e cutter cylinder h 105 is telescope~l to move forwar-31y ~ e ~ le bar 1()8 as 7 in rightward ~1 irc~ctiGn in ~ 3s. l2 an-:l 13 to thus cause the cutter 1l0 nlovil1g integrally wilh the sli~e bar 108 ~ to separate the c3ate 2() projected fronl the front surface of -the piece head holder 111 from the piece 18.
1l When the cut~er 1lO completely cuts to separate 12 the gate 20 from the piece 18, the 51i~.1e bar 106 is l~ backwardly returnecl inteqr~lly witll tlle cutter 110 in !~ a manner of reverse oper~tion of the cntter cylirlder 105 , to the above. 'rhen the cylil1der lO0 is reversely telescoE-ed I to tlle above to backwardly move tl1e sli(le base 102 to 17 the original position.
l~ It is noted that the res~ective movements of the l~ slide base 102 Erom Lhe forward movement to the backward 2() movement must be executed during the stopping period of 2I the piece holders 71 in intermittent operation.
22 The pieces 18 supplie~ by one operation of the 2~ piece removing unit 11 are se~uential1y cut at the gates 2~ ~0 thereof as described above. It is also noted that all such ~ieces 18 rnust be completely separated from the ?f, 3ates 20 thereof until the pieces 18 formed in the next 27 injection mold;ng process are therl supp1ied thereto.
2ff In the Ineanti~e, the piece holders 71 must ~e stopped 2~ when they receive the pieces 18 from the piece removing unit 11. Since the time from when the pieces 18 are inserted 2~i l into the re~pective piece IIol(Iers /1 by tI~e ~ie-c rcm(Jvi 2 unit 11 to when the piecc relllovin-J unil ~ back~ardl~
3 returne~ is lollger than the sto~ tiIn~ of tlIe 1 intermitten~ opera~icn require(~ to ~ie-3ue~rItially c~t the gates 20 from the pieces 18 Or pre(1eterrl~ine(I number as supplied, it must stop the intermittent operation of the 7 plece holders 71 for predetermirle(1 time when the pieces ~ 18 are conveyed from the piece renloving unit 11 to the 9 piece holders 71.
There may variously be considered means for stopping ll the intermitterIt operation of -the piece lIol~Iers 71 Eor l2 predetermined time. The most sinlple means, for example, 13 has preferably an electromagnetic clutch installed at 14 the tor~lue limiter 81 in the piece coIlveyor 72, and a linlit switch for controlling the clutch to de~ect the operation ,~ of the piece removing unit 11.
17 The pieces 18 -thus separated from their gates 2n are lowered while being held by the piece holders 7l by 19 the intermittent movement of tl1e piece holders 71, and are 2(~ then dropped on the belt conveyor 13 from the piece holders 21 71 when the piece holders 71 are tilled and reversely turned 22 at the drive sprocket 88 to be then conveyed to the next 23 cooler via the conveyor 13.
24 Cooler 2.~ Figs. 16 and 17 show preferred embodimcnt of the 26 cooler 14 according to the present inventiorI. The pieces 2~ 18 separated from their gates 20 by the gate cutting unit 2~ 12 are conveye(~ to thc cooler 14 via the belt conveyor 13 2~ as descri~e(I previously.
Reference numeral 120 de~,gnates a conveyor '7~6 inclined u~wardly in -the direction of travel from a ~lat p~late 142 located at the end of the conveyor 1~. The conveyor 120 has an endless belt 12~ extending around a pair of spaced apart pulleys 121. The belt 122 has lateral projection s-traps 123 formed at equal intervals on the outer surface thereof to convey the pieces 18 from the lower position to hiyher position as the belt moves.
124 represents a supporting plate for preventing the belt 122 from deflecting.
130 designates a cover for enclosing the belt conveyor 120, whiah cover 130 has a cooling air inlet 132 formed at the center of the top plate 131 thereof.
The cooling air is fed into the cover 130 to lower the hot pieces 18 formed immediately after the injection-molding process to predetermined low temperature thereby to prepare the pieces 18 under the optimum conditions for the bia~ially orientation blow-molding of next step at uniformly hea-ting time. It is, therefore, noted that, since the pieces 18 cannot be abruptly cooled when they are cooled to xoom tem-perature or lower predetermined temperature in the step ofconveying the pieces 18 via the conveyor 120, the cooling alr must be scattered within the cover 130 to gradually ccol the conveying pieces 18.
Therefore, a number of vent holes 133 are located in a scattering plate 134, which i9 installed in suitable space from the top plate 131 of the cover 130 within the ~over 130 to widely distribute the cooling air from the inlet 132 via the vent holes 133 in the enclosed space pro~ided by the cover 130.
7~
- 2~ -1 Since it is ~ppre~ )decl tl~at ~ c- Iooli.~ ir i~ ot suf~icie]ltly scatt.cred but is sup~Jli((l ol~ly Ic) the i.lltc?rior ~1 of the cover 130 from ~IIC inlet 1.~2 .i t t.lle l10].CS 1~3 are 4 perforate~ directly ull(ler the inle~ 13~ at the Scattf' plate 134, the holes 1~2 are so perforclted at the por~ior ~, as to avoid tllat diL-ectly un(~er the inlet 132 of tl-e 7 scattering plate 134.
~ Reference nunler~l 143 depicts a conveyor for feeding 9 the pieces 18 conveyed to the hiyher pO5itiOII further to the next step.
Il According to the present invention, ~s fully described 12 hereinbefore, since the device for removing an~ conveying .11~ the pieces can draw the pieces injection-molcled in ttle 11 injection mo].dincJ machine and convey them -to the gate !5 cutting unit without scratch to automatically cu-t to separate 1~ the gates from the pieces, it can shortel-l the time rec~uired 17 to cut the gates from the ~ieces, eliMinate the manual r.)ower 1~ entirely, lar~ely reducf the rnoldinc3 time to complete bottle-1'-3 shaped containers of biaxially orientation blow-molded polyethylene terephthalate resin, ena~le automation of the respective molding works to complete the bottle-shaued 2 containers, and perform without troubles with lelatively sirnple construction and operation. Furthermore, since the device of the presen-t invention can exactly convey -the pieces formed i~lmediately after the injection molcling process 2~ Witt)GUt any scratch and can cool the pieces thus conveyed to the optimum predetermined temper~ture for the heatinc3 step immediately before the biaxiall.y orientat.ion blow moldinc3 ~ process, it can prepare tlle pleces to become tll~ state ~n~ler 3() the optimum con(litions for ~ e next molclir,(3 process teE~.
j; - 25 -1 'I Although the specif.ic embodimerlts o~ the prescnt 2 1 invention have been described hereillbefore, it shoulll be ;1 understood that numerous variations thereof may be employecl 4 I without departing from the invention, and it is reiterated that the examples given as above are simply illustrative 6 1 of the device for removing and conveying the pieces.
1~ ~
' I
!
'4 .Lt l7 2n .1 .'~ .
.4 ;~f 2'~
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A device for cooling and conveying pieces after they have been molded in a molding machine comprising:
an endless conveyor for conveying the mold pieces in sequence from one position to another;
a confined area provided by a cover substantially enclosing said conveyor;
a cooling air inlet in said cover for introducing cooling air into said confined area to lower the hot pieces to a predetermined temperature; and deflector means in said confined area, adjacent said cooling air inlet, for distributing the cooling air within said confined area.
an endless conveyor for conveying the mold pieces in sequence from one position to another;
a confined area provided by a cover substantially enclosing said conveyor;
a cooling air inlet in said cover for introducing cooling air into said confined area to lower the hot pieces to a predetermined temperature; and deflector means in said confined area, adjacent said cooling air inlet, for distributing the cooling air within said confined area.
2. A device for cooling as defined in claim 1 wherein said conveyor is a belt conveyor.
3. A device as defined in claim 1 wherein said deflector means comprises a perforated plate spaced a selected distance from said cooling air inlet.
4. A device as defined in claim 3 wherein said plate is devoid of perforations in an area thereof in alignment with the inflow of cooling through said inlet.
5. A device as defined in claims 2, 3 or 4 wherein said conveyor is inclined upwardly from a lower piece receiving inlet end to an upper piece discharge outlet end.
6. A device as defined in claims 2, 3 or 4 wherein said cooling air inlet is in an upper horizontal wall portion of said cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399057A CA1144726A (en) | 1978-04-24 | 1982-03-22 | Device for removing and conveying injection-molded piece |
Applications Claiming Priority (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4857578A JPS6043297B2 (en) | 1978-04-24 | 1978-04-24 | Piece take-out conveyance device |
| JP48573/78 | 1978-04-24 | ||
| JP5435078U JPS5836518Y2 (en) | 1978-04-24 | 1978-04-24 | Piece cooling conveyance device |
| JP48575 | 1978-04-24 | ||
| JP54350 | 1978-04-24 | ||
| JP4857378A JPS54139976A (en) | 1978-04-24 | 1978-04-24 | Gate cutter apparatus of piece |
| CA326,197A CA1134114A (en) | 1978-04-24 | 1979-04-24 | Device for removing and conveying injection-molded piece |
| CA000399057A CA1144726A (en) | 1978-04-24 | 1982-03-22 | Device for removing and conveying injection-molded piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1144726A true CA1144726A (en) | 1983-04-19 |
Family
ID=27508144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000399057A Expired CA1144726A (en) | 1978-04-24 | 1982-03-22 | Device for removing and conveying injection-molded piece |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1144726A (en) |
-
1982
- 1982-03-22 CA CA000399057A patent/CA1144726A/en not_active Expired
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