CN1050089C - Plastic blow molding machine of the wheel type - Google Patents
Plastic blow molding machine of the wheel type Download PDFInfo
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- CN1050089C CN1050089C CN93102691A CN93102691A CN1050089C CN 1050089 C CN1050089 C CN 1050089C CN 93102691 A CN93102691 A CN 93102691A CN 93102691 A CN93102691 A CN 93102691A CN 1050089 C CN1050089 C CN 1050089C
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Abstract
The present invention relates to a plastic blow molding machine having a wheel disk which can rotate around a horizontal axial line A on a base. The plastic blow molding machine comprises a plurality of mold work positions which are arranged on the wheel disk around a rotating axial line and have mold supporters which can be correspondingly opened and closed relative to the rotating axial line on an opening and closing work position. An operation cam of the opening and closing work position is matched with an operation cam follower of the mold work position so as to open and close a mold. A locking cam of the opening and closing work position is matched with a locking cam follower of the mold work position so as to lock and release a locking mechanism directly operating the mold supporter of each mold work position. Thus, no load is on a wheel disk frame during operation. An air spring is preferably and respectively operated relatively and is locked to offset by an operation cam and a locking concave wheel.
Description
The present invention relates to a kind of wheeled plastic blow molding machine, comprise a wheel carrier around the horizontal axis of rotation rotation, and have many be installed on the wheel carrier around the die worker positions of horizontal axis, each die worker position all has a pair of die support to be used to install a pair of mould part of mould, so that die support can be parallel to rotation in mould deployed position (mould partly separates each other) and mould closing position herein, move between (mould partly limits the die cavity of a sealing herein, carries out blow molding therein).
Wheeled plastic blow molding machine, United States Patent (USP) 3310834 (people such as simpson) for example, 3764250, (Waterloo), disclosed with 3986807 (people such as Takegami), included a wheel disc in the past, it has the wheel carrier of a rest on base and is used for centering on horizontal axis rotation, around rotation many die workers position is installed on wheel carrier, and a pair of die support that is respectively applied for a pair of mould part of installation like this is parallel to rotation and moves between mold open and closing position.This blow molding machine generally comprises a closed station, die support moves to a closing position with mould part herein, within a mold cavity, enclose the plastic parison of a heat of extruding so that blow out the shape of mould, then after wheel disc rotates about 3/4, arrive the die sinking station and cool off before the die sinking.Usually be mould to be bearing between unlatching and the closing position move with cam-operated in the past by the toggle link of spring bias voltage and retaining mechanism, its motion mode makes the wheel carrier asymmetric load cause at last grinding away and needs repairing.
(this mould rotates on mold wheel between unlatching and closing position for wheeled plastic blow molding machine (wherein mould is bearing in to open and close and closes close to each other and remotely horizontal movement between the position) and book mould, as United States Patent (USP) 3608015, Marrtelli discloses) to compare be preferred.(put into parison between with the mould part that allows opening, be very limited, this just causes many production problems to this book mould on wheel in the space of its enable possition.
An object of the present invention is to provide a kind of improved wheeled plastic blow molding machine.
In order to realize above purpose of the present invention and other purpose, the plastic blow molding machine of building according to the present invention comprises the wheel disc (the wheel carrier rest is on base) of a base and a belt wheel frame, and wheel disc can rotate around horizontal axis of rotation.Wheel carrier comprises at least two each other along the wheel carrier part of the parallel placement of rotation.Around rotation many die workers position is installed on wheel, and each die worker position all comprises at least one wheel carrier Connection Element, it extends between the wheel carrier part of wheel.Each die worker position also comprises a pair of die support, is respectively applied for a pair of mould part that the mould that carries out plastic blow molding is installed.The a pair of die support of each die worker position all is installed on its Connection Element and moves between mold open position (mould part is separated from each other) and mold closed position (mould part limits the die cavity of a sealing) so that be parallel to rotation herein herein.Each die worker position also comprises a retaining mechanism, and it has a pair of lock to be installed in respectively on the relative face by the mould of die support rest.Each lock is included in the locking nut on the mould part of being correlated with, also comprise a locking member, it is installed on another relevant mould part, meshes and keeps relevant mould and be in the close position thereby this mould moves to latched position and locking nut relevant on a die support.Thereby each locking member also is movable to the engagement of the locking nut of an ejected position disengaging and a die support allows this die support and mould mounted thereto to move to the enable possition.Each die worker position comprises that also operation and locking cam push rod are respectively applied for mobile its die support and its locking member.The mold closing of machine and die sinking station are separating each other around the movement locus of pivot center (when wheel disc rotates around rotation) along the die worker position on the base.Each mold closing comprises relevant operation and the locking cam that is installed on the base with the die sinking station, the operation and the locking cam push rod of each die worker position on their mobile respectively wheel discs.The driver rotating wheel disk of this machine makes die worker's displacement moving by locked mode and die sinking station, closed respectively and open mould on the die support at these position operation and locking cam move operation and locking cam push rod, and locking and unclamp the locking member of locking mechanism on the die support.At first this machine extruder is extruded the plastic parison of a heat between the mould part of opening, and then mould closes and carries out blow molding in the die cavity that is incorporated in sealing.
(this wheel disc rotates around horizontal axis die support on wheel disc, move mode and by being installed in locking nut on the die support and locking member lock and the mode of unclamping has prevented the wheel disc asymmetric load, also provide sufficient space to be used for parison at die sinking position simultaneously and be expressed into before the mold closing blowing between the mould part that is installed in the die sinking supporting.
In its preferred structure, plastic blow molding machine comprises that at least one operating gas spring is used for operation of cam closed and that open station is applied bias voltage, moves closed and operation of cam push rod of opening station to the cam work position and then move operation cam follower and closed and open mould on the die support thereby make it enter into the cam work position.The gas spring bias voltage is with all moulds on the die support of the closed wheel disc of a uniform power, and this power and cam follower, die support and mould tolerance have nothing to do; Under the situation that mould breaks down, move each operation of cam and withstand the gas spring bias voltage.In addition; Each is closed and open station and comprise that also thereby a locking gas spring is used for that its locking cam is applied bias voltage and makes it enter into the locking cam push rod of mobile die worker position, cam work position and mobile locking element between locking and released position thus.The spring bias voltage that heads on it under the situation that locking mechanism breaks down moves each locking cam.
In preferred structure, each die worker position that plastic blow molding machine had all provides a pair of die support that is installed in respectively to last operation of cam push rod, and each closure and unlatching station all comprise a pair of operation of cam, and move operation cam follower is right respectively for its.Each is closed and open station and preferably also comprise a pair of operating gas spring, they respectively to operation of cam apply bias voltage make its with respect to the cam follower of die worker position to entering into the cam work position.
The preferred structure of the soft molded machine of plastics is also decided cam follower for the die worker position on the wheel disc that is had provides a monolock relevant with die support, and they can move between locking and ejected position in that locking member is installed on the die support.Each is closed and open station and comprise that a monolock decides the locking cam push rod that cam is used for mobile die worker position.
As preferred construction, plastic blow molding machine has mold closing and die sinking station, they each all comprise a pair of supporting arm, it is right that operation of cam is installed on supporting arm.Each mold closing and die sinking station all have a pair of operating gas spring in addition, and it is positioned at cam work position to applying bias voltage with the operation of cam above it to supporting arm respectively.Each monolock closed and that the unlatching station is installed on the one supporting arm is in addition decided cam, and each closed and open station also have a monolock decide gas spring it extends between the locking cam of a said supporting arm and installation thereon, locking cam is applied bias voltage makes it enter into the cam work position.The supporting arm of each mold closing and die sinking station all has one pivotally connectedly to be used to be fixed in base, and the locking cam of each mold closing and die sinking station all has one pivotally connectedly to be used to be fixed in this station (fixing a supporting arm of locking cam in the above).The supporting arm of each closed station connects comprising an idle running, it extends between base and supporting arm, operation of cam is positioned at the cam work position, withstand the bias voltage of relevant operating gas spring, also allow when mould is closed, to move simultaneously with the bias voltage that when die support has fault, heads on relevant operating gas spring.The supporting arm of each die sinking station is to comprising a guider, and it extends between base and supporting arm, provides guiding at it in relevant pivotally connected motion.
Plastic blow molding machine comprises three along the rotating shaft wheel carrier part that separates parallel to each other in preferred structure.Two in the wheel carrier part is end frame part, and they are fixed on the opposite face of centre frame part.Each die worker position comprises a pair of wheel carrier Connection Element, and they extend between the end frame of wheel carrier part and centre frame part, and fixes its die support and partly be used for moving between the opened and closed positions of mould.There is the pinion of a swivel bearing on the centre frame part each die worker position.Each die support part of each die worker position all has a relevant tooth bar, and it is meshed with pinion and coordinates the mutual motion of die support part.Each die worker position preferably includes a pair of its die support that is installed in respectively to last operation of cam push rod; Each closure and unlatching station comprise a pair of operation of cam, under the coordinative role of pinion on the centre frame part and tooth bar (they are installed in the die support of die worker position respectively to last), it is right that these operation of cam move the operation of cam push rod of each die worker position respectively.Each die worker position comprises that also a monolock that is installed on the one die support decides cam follower, on this die support, locking member is installed, can between locking and released position, move this locking member, and each is closed and open station and comprise that a monolock decides the locking cam push rod that cam is used for mobile die worker position.
In preferred construction, the lock of the locking mechanism of each die worker position is to all comprising a pair of locking nut on an one die support, and on its another die support, also have its locking member, this locking member constitutes the pair of locking part, move between locking and released position respectively this lock part, enter with break away from relevant another die support on the right engagement of locking nut.The lock of the locking mechanism of each die worker position is to also comprising a pair of locking member guider that separates, they are installed with the pair of locking part of the relevant locking member on relevant die support respectively, and it is moved with respect to a pair of locking nut on another die support between locking and released position.
In its preferred construction, plastic blow molding machine also constitutes each such die worker position, it comprises a crotch connector, it has a bar to be connected on the locking cam push rod on the relevant die support, this die worker position also has a pair of support that separates, and their bars from this die worker position opposite face extend and a pair of the locking that be connected respectively to locking mechanism is used to provide locking member moving between locking and released position.
Preferred construction also has closed and opens station, each is all being equipped a pair of operating gas spring and is being respectively applied for and makes it enter the cam work position to its operation of cam to applying bias voltage, and each is closed and open station and comprise that all a monolock decides gas spring, is used for that its monolock is decided cam and applies bias voltage and make it enter the cam work position.Foregoing each closure and unlatching station all comprise a pair of supporting arm, a pair of operation of cam is installed on it, and each is closed and open station a pair of operating gas spring is all arranged, and it applies bias voltage to its supporting arm respectively operation of cam is positioned its cam work position.Still foregoing closed unlatching station each all have the monolock that is installed on the one supporting arm to decide cam, and each closure and unlatching station all have monolock to decide gas spring, it is at a supporting arm and be installed between the locking cam on the supporting arm and extend, and this locking cam is applied bias voltage make it enter into the cam work position.Each each supporting closed and the unlatching station all has pivotally connected being used for that its pivot is positioned at base (as previously mentioned), and that each locking cam closed and that open station all has is one pivotally connected, is used to be located the supporting arm (fixing locking cam on this supporting arm) at this station.Every pair of supporting arm of closed station comprises that all an idle running connects, it extends the bias voltage that the operation of cam on the supporting arm is headed on relevant operating gas spring and is positioned the cam work position between base and supporting arm, simultaneously when mould is closed and die support also allow it to head on the bias voltage of relevant operating gas spring when breaking down and move.Every pair of supporting arm opening station comprises a guider, and it extends between base and supporting arm provides guiding to it around relevant pivotally connected motion.
From following finishing best mode of the present invention and will easily understanding purpose of the present invention, characteristic and advantage in conjunction with the accompanying drawings of being described in detail.
Fig. 1 is the side diagrammatic sketch of the wheeled plastic blow molding machine of the body plan according to the present invention;
Fig. 2 is the view of being got along 2-2 line direction among Fig. 1, but has only shown that three die worker positions are so that be illustrated more clearly in related structure;
Fig. 3 is that the enlarged drawing got along 3-3 line direction among Fig. 2 is so that explanation die worker bit architecture;
Fig. 4 is that the part figure that got along 4-4 line direction among Fig. 3 is so that further specify die worker's bit architecture;
Fig. 5 is the view of inwardly radially being got with respect to the rotation of machine wheel along 5-5 line direction among Fig. 4, further specifies the structure of die worker position;
Fig. 6 is the view of being got with respect to the rotation outward radial of machine wheel along 6-6 line direction among Fig. 4, further specifies the structure of die worker position;
The operation of Fig. 7 die worker position that is the machine got along 7-7 line direction among Fig. 1 when the view of closed station is begun by the closure of cam driven with explanation;
Fig. 8 is the view similar with Fig. 7, and it is closed but when not locking yet, this circulates in the situation of the last stages of closed station to be depicted as the die worker position.
Fig. 9 is the view similar with Fig. 8, is depicted as after the die worker position has been locked by cam driven, and this circulates in the more situation of last stages of closed station;
Figure 10 opens the view of station along the machine that 10-10 line direction among Fig. 1 and 1/2 cycle of changeing get, and explains through diagrams in the die worker position of opening the closure before taking out blow-molded article;
Figure 11 is the view of being got along 11-11 line direction among Figure 10, further specify for locking with the die worker position of closure in the machine construction of opening station;
Figure 12 and Figure 11 are similar, be depicted as the die worker position unclamped by cam driven operation after but still be in the situation of unlatching station the latter half closure condition under;
Figure 13 and Figure 12 are similar, be depicted as the die worker position opened by cam driven operation after open station should the cycle situation of last stages more;
Figure 14 is the enlarged drawing of machine cam structure when being in closed station shown in Fig. 7,8 and 9;
Figure 15 is cam structure further detail drawing when closed station of being got along 15-15 line direction among Figure 14;
Figure 16 is along the further detail drawing of 16-16 line cam structure that direction is got among Figure 14 when the closed station;
Figure 17 is the view that is similar to Figure 14, and it illustrates the motion of operation of cam, and this motion is in order to regulate the fault by cam driven die worker position;
Figure 18 is the part figure of cam structure when closed station, and it illustrates the operation that lock cam is regulated die worker's position locking mechanism-trouble;
Figure 19 is opening the view of station cam because of overload cam structure when mobile;
Figure 20 is the topology view of cam at the unlatching station, illustrates owing to moving that flash between the die support of die worker position causes;
Figure 21 is at the cam structure view that is similar to Figure 19 and 20 of opening station, but illustrates the unlatching fault owing to the die worker position, and this cam structure is moved to a certain position;
Figure 22 is the partial view at the cam structure of opening station, illustrates locking cam and is moved owing to the fault of die worker's position locking mechanism;
Figure 23 is the sketch of the gas spring structure of machine; And
Figure 24 is the sketch of air supply system of the gas spring of control machine.
Referring to Fig. 1 and Fig. 2, usually indicate with 40 according to plastic blow molding machine of the present invention, it comprises a base (generally with 42 indications) and a wheel disc 44, and this wheel disc has a wheel carrier 46 that is bearing on the base, can rotate in the outer cover 47 that is illustrated by the broken lines around horizontal axis of rotation A.More particularly base 42 comprise the bottom, middle part and top beam 48,50 and 52 and comprise the bottom and upper strut 54 and 56 be used between crossbeam, providing supporting (as shown in the figure).Bottom girder 48 can comprise 58 (as shown in the figure) of wheel so that move along auxiliary track 60, and bottom shore 54 (as shown in the figure) comprises that adjustable jack 62 is used for regulating beam to a horizontal level.Suitable bearing 64 on top beam 52 provides a swivel bearing.As shown in Figure 2, near left axle head 66, wheel carrier 46 comprises a gear 70 by the drive unit 72 that adapts (being installed in an end of upper beam 52 as shown in Figure 1) transmission.This drive unit 72 comprises an electric drive motor 74, and its output 76 drives coupling device 78 and the input 80 of driven wheel reduction box 82 by one, and the output 84 of reduction box is a gear, and it and driven wheel 70 engagements are rotated the wheel disc 44 of machine.
As shown in Figure 2, wheel carrier 46 comprises at least two wheel carrier parts 86 along the interval of rotating shaft A placement parallel to each other, and this wheel carrier part 86 is located in respectively on the adjacent pair of bearings 64 as illustrating.As the back more abundant as described in, in fact have three wheel carriers all to divide, be installed in two centre positions between the wheel carrier part 86 for the 3rd wheel carrier part (being appointed as 88).
As depicted in figs. 1 and 2, plastic blow molding machine 40 comprises many being installed on the wheel 44 around the die worker position 90 of rotation A (as the back more abundant as described in).As illustrate, 24 die worker positions 90 are installed at wheel on 44, more die worker position is relatively arranged and in use can provide sizable output with traditional blow molding machine.Each die worker position 90 comprises that at least one takes turns frame connector 92 as shown in Figure 2, and it extends between wheel carrier part 86 and wheel carrier part 88 and is suitably fixed, and provides rigidity for wheel carrier 46.Each die worker position 90 also comprise a pair of die support 94 in case install respectively mould 98 a pair of mould part 96 (in the machine operation process, to carry out blow molding therein, as the back fully as described in).The a pair of die support 94 of each die worker position 90 is installed on its Connection Element 92, so that can be parallel to rotating shaft A at mold open position (bottom position as shown in Figure 2, mould part 96 is separated from each other herein) and mold closed position (shown in Fig. 2 middle and upper part was divided, blow molding took place mould part 96 die cavity 100 that limits a closure therein herein) between motion.
In conjunction with referring to Fig. 2,3 and 4, each die worker position 90 comprises a locking device 102, has a pair of lock 104 to be installed in respectively on the die support 94 with mould 98 (as previously mentioned by die support 94 rests) opposite face.Each lock comprises a locking nut 106 on relevant die support 94 shown in Fig. 3-6, each lock also has a locking element 108, and it is installed on another relevant die support 94 and moves between locking and released position.More particularly, each locking element 108 is positioned at locked position (as shown in Figure 9), with locking nut 106 engagements on the relevant die support 94, and the relevant locking nut 106 on this die support is fixing, by directly locking die support mutually the mould of being installed is tightened in closing position thus.In addition, the locking nut 106 that each locking element 108 also is movable on released position (shown in Fig. 7 and 8) and this die support unclamps engagement, to allow die support and to move to the enable possition by its fixing mould, is narrated more fully as the back.
The most handy Fig. 2 and 3 explanations, each die worker position 90 has operation and lock cam push rod 110 and 112 respectively, is respectively applied for to move its die support 94 and its locking element 108 (being narrated more fully as the back).To be die worker position 90 give birth to along the arrow 118 luck movable property that turns clockwise when wheel 44 around rotation A for machine closure separately and open station 114 and 116 movement locus along die worker position 90 on support 42 and separate each other (as shown in Figure 1), this movement locus.What almost rotatablely move 3/4 is that (cycle of blow molding herein begins for closed station 114 at mould, as describing in detail the back) and unlatching station 116 (this end cycle herein, the blow molding product is ejected, and transports with a suitable conveyer that does not show and modifies) between.Closed station 114 (shown in Fig. 7-9) comprises the operation of cam 120 that is installed on the machinery bed 42, with move operation cam follower 110 (describing in detail as the back).Still shown in Fig. 7-9, closed station comprises that one is installed in lock cam 122 (as detailed earlier herein) on the machinery bed 42 with the lock cam push rod of mobile die worker position in machine running process.Shown in Figure 10-13, to open station 116 and comprise operation of cam 124, it promotes the lock cam push rod of each die worker position on the wheel disc in machine running process.
Provide driving means 128 to promote die worker positions 90 by the turn clockwise drive unit of narrating previously 72 of (discussion of carrying out in conjunction with Fig. 1 as the front and shown in arrow 118) of wheel disc 44 that makes by closed and open station 114 and 116, the operation of this two station and lock cam promotes operation and the lock cam push rod is closed respectively and the unlatching die support on mould and pin and unclamp the locking element of the locking device of die support.With an extruder that extruder 130 is any ordinary constructions of diagrammatic representation signal, it upwards extrudes earlier the plastic parison 132 (between the mould part of opening) of a heat, and mould closes at closed station 114 and is incorporated in blow molding in the closed die cavity subsequently.Then 90 arrival unlatching stations 116 (open mould and eject blow-molded article) cool off before in related die worker position in the cyclic process about 3/4, also can utilize a follow-up tag adhering in mould machine 134, begin to provide one or more label before the closed station 114 of arrival (mould is closed and prepares parison herein) for each die worker position from opening station 116.
Closed and unlatching station 114 and 116 all comprises gas spring to the cam biasing, makes it enter cam work position (describing in detail as the back).More particularly, shown in Fig. 7-9, thereby closed station 114 comprises that operating gas spring 136 is used for making it enter cam work position move operation cam follower 110 and the mould in the closed mold supporting in the machine operation process thus to operation of cam 120 biasings.Equally, shown in Figure 10-13, open station 116 and comprise operating gas spring 138, thus be used for to operation of cam 124 apply bias voltage make it enter cam work position move operation cam follower 110 and in the machine operation process, open thus mould on the die support under the situation that die support breaks down each operation of cam all by headed on closed and open station gas spring deviation and move.Close all moulds of die support on the wheel disc with a uniform power at the gas spring bias voltage of closed station, this power and cam follower, die support, mould and other tolerance are irrelevant, therefore can provide a more uniform power value, particularly when each mould of closure, can apply identical clamping force, so can excise overlap more equably to parison.Closed and unlatching station 114 and 116 also comprises locking gas spring 140 and 142 respectively, make its locking cam push rod 112 that enters mobile die worker position, cam work position thereby be used for that locking cam 122 and 126 is applied bias voltage, and move the locking member 108 between described in front locking and the released position thus.Each locking cam 122 and 126 all heads on the motion of gas spring bias voltage and can prevent to damage machine thus under the situation that locking mechanism breaks down.Operating gas spring 136 and 138 and locking gas spring 140 and 142 all be any common type, and fill, thereby for example nitrogen provides the gas spring deviation of cam with proper compression gas.
Preferably shown in Fig. 2 and 3, each die worker position 90 comprises a pair of operation of cam push rod 110, and they are installed in respectively on a pair of die support 94.Therefore illustrated closed station 114 comprises a pair of operation of cam 120 (Fig. 1) in Fig. 1, during machine operation, they move a pair of operation of cam push rod 110 of each die worker position 90 respectively, and illustrated unlatching station 116 also comprises a pair of operation of cam 124 (Figure 10 and 11) in Fig. 1, during machine operation, they move a pair of operation of cam push rod of each die worker position 90 respectively.The operation of cam 120 and 124 of closed station 114 of this two couple (shown in Fig. 7-9) and unlatching station 116 (shown in Figure 10-13) is fixed on the opposite face both sides of machine wheel 44, therefore thereby taking turns disc spins move die worker position 90 to move the die support 94 that opens and closes between the position, also operate the locking mechanism 102 of each die worker position so that move the locking member 108 (as the back detailed description) of each lock 104 between each is to operation of cam.Closure shown in Fig. 1 and unlatching station 114 and 116 comprise a pair of operating gas spring 136 and 138 respectively, shown in Fig. 7-9 and Figure 10-13, provide for relevant operation of cam 120 and 124 to be biased into cam work position (each of this position and swiveling wheel opposite face patrix station is relevant to operation of cam push rod 110).Therefore the operating gas spring 136 and 138 in closure and unlatching station on face of wheel disc provides bias voltage in one direction relevant operation of cam, and the operating gas spring 136 and 138 in closure and unlatching station on another face of wheel disc provides bias voltage to this operation of cam on a relative direction.
As the optimal solution graph among Fig. 3, each die worker position 90 of wheel disc preferably includes a monolock relevant with die support and decides cam follower 112, and locking member 108 is installed on die support, can move this locking member as previously described between locking and released position.As shown in Fig. 7-9, closed station 114 has a monolock to decide cam 122, and it is set on the one side of wheel disc the locking cam push rod 112 with operation die worker position.Equally, shown in Figure 10-13, closed station 116 has a monolock to decide the locking cam push rod 112 that cam 126 is used for operating the die worker position.
Each closure and unlatching station 114 and 116 all comprise a pair of supporting arm that operation of cam is installed on it.The spy is in addition, and shown in Fig. 7-9, closed station 114 comprises that a pair of supporting arm 144 (describing in detail as the back) that is installed on the machinery bed 42 has the operation of cam push rod 110 (as previously described) of operation of cam 120 with mobile die worker position on it.Equally, shown in Figure 10-13, open station 116 and comprise that a pair of supporting arm 146 (describing in detail as the back) that is installed on the machinery bed 42 has the operation of cam push rod 110 (as previously described) of operation of cam mounted thereto 124 with mobile die worker position.As shown in Fig. 7-9 the operating gas spring of closed station 114 to 136 to supporting arm to 144 apply bias voltage thus positioning action cam 120 so that reach the mould closure with the operation of cam push rod 110 on the cam control die worker position.Equally, the operating gas spring of opening station 116 shown in Figure 10-13 to 138 to supporting arm to 146 apply bias voltage thus positioning action cam 124 so that reach mold open with the operation of cam push rod 110 on the cam control die worker position.
As shown in Fig. 7-13, closed and open station 114 and 116 each its single locking cam 122 and 126 is all arranged, they be installed in respectively carry out on its supporting arm cam-operated.More especially, shown in Fig. 7-9, closed station 114 has its single locking cam 122, it is installed on the left supporting arm 144 that has single locking gas spring 140, and this spring extends at left supporting arm 144 with between the locking cam of installing thereon and locking cam is applied bias voltage makes it enter into the cam work position relevant with the locking cam push rod 112 of die worker position.Equally, shown in Figure 10-13, closed station 116 has its single locking cam 126, it is installed on the left supporting arm 146 that has its single locking gas spring 142, and this spring extends between this left supporting arm and locking cam 126 mounted thereto and locking cam is applied bias voltage makes it enter into the cam work position relevant with the locking cam push rod 112 of die worker position.
Shown in Fig. 7-13, pivotally connectedly the location is provided and provides the location to the locking cam on the supporting arm to the supporting arm on the machinery bed.More particularly shown in Fig. 7-9, closed station 114 has rest each supporting arm 144 on machinery bed 42, and it is that a associated pivot by supporting arm one end connects 148 rests.In addition the left supporting arm 144 of the closed station as shown in Fig. 7-9 have one pivotally connected 150, it with locking cam 122 under the bias effect of locking gas spring 140 movably pivot navigate to the other end of left supporting arm.Equally, as shown in Figure 10-13, opening station 116 has its supporting arm 146, and each is all being equipped relevant pivot and is connecting 152, thereby (generally being the centre at each end of supporting arm) provides condition on the machinery bed 42 in order supporting arm is installed to.In addition, the left supporting arm 146 of closed station has a pivot to connect 154, it is installed in the single locking cam 126 of closed station and has on the left supporting arm that locks gas spring 142, makes it enter into cam work position (relevant with the locking cam push rod 112 of die worker position) thereby apply bias voltage.
Shown in Fig. 7-9, the a pair of supporting arm 144 of closed station 114, each has all comprised and has been dynamically connected 156, the operating gas spring that it can allow to be correlated with is with supporting arm 144 location, therefore thereby its operation of cam just is set at the mould of cam-operated position with a uniform power closed mold station, also allows to head on the bias voltage motion of gas spring simultaneously in this mould closing course and under the situation about breaking down.Like this, these supporting arms 144 are applied to the center each other by relevant operating gas spring 136 and are biased into that relevant sky is moving to be connected 156 and can allow at utmost, and making can be with the mould (as previously mentioned) of cam control closure.However, under the situation of mould not according to designated movement, supporting arm 144 is rotatable separated from one anotherly to be rotated wheel disc to stop and unlikely damage.
Shown in Figure 10-13, each all has a relevant guider 158 a pair of supporting arm of closed station 116 146, and it extends to relevant pivotally connected 152 motion guiding is provided between base and supporting arm.More particularly, as shown in figure 21, each guider 158 comprises a pair of director element that separates 160, and the targeting part 162 of supporting arm 146 is being set between them, and the result is located (describing in detail as the back) with pivotally connected 152 cooperations in the supporting arm motion process.
Mention in conjunction with Fig. 2 as the front, wheel carrier 46 comprises three wheel carrier parts along rotation A placement parallel to each other, and two wheel carriers partly are end frame parts 86, and they are positioned at the relative two sides of center wheel carrier part 88.In addition, associating is with reference to figure 1,2,5 and 6 as shown in the figure, each die worker position 90 comprises a pair of wheel carrier Connection Element 92, and they are round bars, extends between the end frame of wheel carrier 46 and centre frame part 86 and 88 and is assembling die support part 94, it is moved, between the opened and closed positions of mould shown in Fig. 2 bottom and top.Shown in Fig. 3-6, each die support 94 comprises a pair of installation slide 164, thereby they hold wheel carrier Connection Element 92 respectively suspension is provided thereon, makes die support close to each other or away from motion between the opened and closed positions of mould.Shown in Fig. 3 and 4, centre frame part 88 is being installed between the slide 164, this slide 164 is arranged on a pair of relevant die support 94 of relevant die worker position 90, centre frame part 88 also has a pinion 166 (being rotatably installed in above it around pinion shaft 168), the axis of pinion shaft 168 radially extends with respect to the rotating shaft of wheel disc, this pinion 166 has the gear tooth, and they are stretched out by pinion shaft 168 outward radials.As shown in Figure 6, each die support 94 has goes up relevant tooth bar 170, and the bolt 172 shown in it is for example available is fixed on the die support, on the tooth bar 170 tooth is arranged, it with the tooth engagement of pinion 166 to adjust partly each other motion of die support.Therefore pinion 166 guarantees die support 94 is closed each die worker position in the center with respect to wheel disc mould with the engagement of tooth bar 170.Therefore asymmetric situation can be do not produced, the quality of blow molded product will be influenced at that rate nocuously.The operation of cam push rod 110 of each die worker position and closed and the operation of cam 120 of opening station and 124 therefore with the center molded base part on pinion 166 and be installed in respectively die support to last tooth bar to 170 cooperative motions, move to adjust foregoing mould between the mould opened and closed positions.
As the front in conjunction with as described in Fig. 3, each die worker position 90 comprises a single locking cam push rod 112 that is installed on the die support 94, locking member 108 is installed on die support, so that mobile locking member between locking and released position, and each closure and unlatching station comprise a single locking cam 122 and 126 respectively, so that the locking cam push rod 112 of mobile die worker position.In conjunction with as shown in the figure with reference to figure 3 and 5, the lock of the locking mechanism 102 of each die worker position to 104 each all comprise a pair of locking nut 106, its installation is strengthened by the relevant ribs 107 on the relevant die support.In addition, preferably as shown in Figure 5, each locking element that is configured 108 all comprises a pair of locking element part 109, they along with between latched position (as shown in Figure 9) and released position (as shown in Figure 8) move and respectively between each locking and each released position with locking nut to 106 engagements with shift out engagement.As the lock of each die worker position 90 of institute's optimal solution graph in the Figure 4 and 5 to 104, its each all comprise a pair of locking element conduit 174 that separates, they are assembling the pair of locking componentry 109 of relevant locking member 108 (on relevant die support spare 94) respectively, so that move with respect to a pair of locking nut 106 that is installed on other die support 94 between locking and released position.Humidification is erected in propping up of conduit 174 on 176 pairs of relevant die supports 94 of ribs.Preferably adjustable right sensors 178 is installed on a die support, and it moves by the mould closure and with the engagement of locking nut 106 and sends the signal that the mould closure has taken place, with this supervisory work in the machine use.
In conjunction with diagram with reference to figure 3 and 5, each die support 94 comprises a cantilever arm 180, therefore it is supporting axle 182 (Fig. 3), and operation of cam push rod (rotatable motion) is installed on this axle, rolling will take place so that cam-operated when relevant operation of cam meshes.Each die worker position also has a die support 94, and the lock cam push rod 112 that is provided is installed in the above, and push rod 112 has a crotch connector 184.As shown in Figure 4, crotch connector 184 has a bar 186, and it comprises one 188, and lock cam push rod 112 rotatably is installed on axle, so that, and help the locking of cam and decontrol operation by contact and the locking cam engagement closed and that open station of rolling.The bar 186 of crotch is installed in the outer end of relevant arm 180 by a slide unit 190, and slide unit 190 comprises a pair of slide unit element 192 (being fixed on the arm by relevant bolt 194).Therefore locking cam push rod 112 is bearing on the bar 186 of crotch 184 so that with respect to 94 motions of relevant die support, and carries out by foregoing cam effect and to lock and unclamp operation.Crotch 184 also comprises a pair of support that separates 196, and they extend and be connected respectively on a pair of lock 104 of locking mechanism 102 from the bar of die worker position opposite face, are mobile create conditions of locking member 108 between locking and released position.More particularly, as shown in Figure 3, each support 196 all has an end to be fixed on the rod element 200 with relevant nut 198, the other end then is fixed on a pair of Connection Element 204 (as shown in Figure 5) by pin 202, and Connection Element 204 is installed on the relevant die support by relevant pin 206 by the pivot form.Each connector 204 all uses relevant pin 208 to be connected on the locking element part 109 of locking element 108.Between its relative end, therefore each support 196 all passes the conduit 210 on the die support 94 that is associated and extends, and the Connection Element 204 that moves through by cam-actuated crotch connector 184 moves between released position shown in Figure 5 and latched position shown in Figure 9 for locking element part 109 condition is provided.
Referring to Figure 14,15 and 16, the supporting arm 144 of closed station is as shown in the figure, one fabricated construction is arranged, therefore comprise bolt 212 (Figure 14), its fixing operation cam 120 can use different cam profiles that the motion of any special needed different tracks of blow molding operation is provided.In spatial relationship, be connected the bias voltages rotation that 156 permission supporting arms head on operating gas spring 136 by pivotally connected 148 (it is installed in supporting arm 144 on the base 42) with dallying, spring 136 applies the being biased into degree that the idle running connection can allow clockwise to supporting arm usually.Yet operation gas spring 136 allows supporting arms 144 to rotatablely move around pivotally connected 148 under the situation that machine breaks down, and also can be in closing course no matter any tolerance variation and apply a uniform power to mould.
As shown in figure 15, supporting arm 144 comprises a carriage 211, it extends and is supporting locking cam 122 and locking gas spring 140 from operation of cam 120, and (as previously mentioned), locking cam is positioned like this, and that locking device can be carried out under the gas spring bias voltage is cam-operated.This carriage 214 comprises plate 216 and connecting bolt 218 (being used to operate the location with locking cam 120 and 122), other supporting arm of closed station 114 has similar structure, and different is not have locking cam and relevant locking gas spring (as previously described) in the above
As shown in figure 16, in fact the locking cam 122 of the operation of cam 120 of closed station and closed station has bowed shape around the wheel disc rotation to adapt to the arcuate movement of wheel disc overhead cam push rod.Equally, each also all has this bowed shape around the wheel disc rotation to adapt to the arcuate movement of wheel disc overhead cam push rod to open the operation of cam of station and locking cam.
As shown in figure 17, the supporting arm 122 of closed station overcomes the bias voltage of operating gas spring 136, moves to dotted line position from solid line position.Be to realize, and thus the fault of machine regulated by stoping by the foregoing cam-operated mould closure that produces.In addition, the bias voltage of operating gas spring guarantees to have a uniform power when close die, therefore in the blow molded product as discussed earlier of gained uniformity is arranged.
As shown in figure 18, the locking cam 122 of closed station partly moves to dotted portion from solid line under the situation that locking mechanism breaks down, by the device that shuts down automatically that assembles on this mobile appropriate sensors that reacts and the machine being prevented thus the damage of machine.It is pivotally connected 150 to withstanding relevant supporting arm 144 around it that this of locking cam moves.Idle running connection 219 allows locking cam to center on pivotally connected 150 motions under the out of order situation of the locking mechanism of a die worker position bias voltage location that locking cam 122 heads on locking gas spring 140 simultaneously.
Referring to Figure 19, be depicted as a supporting arm 146 on it and locking cam 126 is installed that under overload condition, has moved the die sinking station, a kind of like this overload condition causes supporting arm 146, centers on pivotally connected 152 on the base and rotates with the bias voltage that counter-clockwise direction heads on foregoing operating gas spring 138.In the process of this motion, the guider 158 on pivotally connected device 152 opposites provide to supporting arm under the effect of operating gas spring 138 guiding movement and under the bias effect of operating gas spring 138 when turning back to a certain position (propping up the adjacently situated surfaces of machinery bed 42) at this position resilient 220, guiding movement is provided.
As shown in figure 20, when matched moulds is finished in the overlap overslaugh between the mould, open the motion mode motion that the station supporting arm also can another kind of head on the gas spring bias voltage.More particularly, pivotally connected 152 allow the mobile to adapt to the situation that can not finish matched moulds of trace, this amount of movement is equivalent to about 1/4 cun to each supporting arm 146 of opening station, and whole two supporting arms of wheel disc opposite face just allow the total amount of movement in about 1/2 cun this mode like this.
As shown in figure 21, shown that bias voltage that die sinking station supporting arm 146 heads on operating gas spring 138 moves the fault when adapting to mould and open, and do not produced the result who damages relevant die worker position.To the suitable detection of this displacement with shut down any damage that also can be used to stop to blow molding machine.
As shown in figure 22, shown that locking cam 126 moves by heading on the bias voltage that locks gas spring 142 around pivotally connected 154 with counter-clockwise direction corresponding to the locking device fault time, like this resilient 222 contacting with regard to displacement and the 146 surface disengagings of adjacent supporting arm.142 pairs of locking cams 126 of Xiang Guan locking gas spring apply bias voltage and make braking 222 paste supporting arm 146 to settle generally speaking.
Referring to Fig. 1, a complete cycle of blow molding machine constitutes a complete turn of wheel, and it leaves closed station 116 and finish after date the last week from its contained specific die worker position 90.If carry out tag adhering in mould, then one or more label is imposed in the mould of unlatching with foregoing tag adhering in mould machine 134.When being extruded between the compartment of plastic parison 132 at open mould of heat, so open die worker position 90 just continues to change towards closed station 114 clockwise to go.
When each die worker position 90 arrives as shown in Figure 7 closed station 114, the displacement of the operation of cam push rod 110 on the fixed operation of cam 120 constraint die worker position die supports 94.The continuation of wheel disc patrix station is moved (promptly arrow 118 direction up) as shown in the figure and is caused die support 94 to move relative to each other until the mould closure that takes place as shown in Figure 8, so just plastic parison is enclosed within the mould.The operating gas spring 136 of closed station is by supporting arm 144, and operation of cam 120 and operation of cam push rod 110 apply a uniform pressure, then die support 94 usefulness one pressure with the mould closure of being correlated with, this pressure is all identical to each die worker position.
In position shown in Figure 8, illustrated die worker position 90 is in the mould closing position but its locking mechanism 102 non-locking still.When wheel disc 44 continues by direction shown in the arrow 118 when position shown in Figure 8 turns to position shown in Figure 9, locking cam 122 constraint locking cam push rods 112 make locking member 108 move to its latched position and mesh with locking nut 106.Discussed as former, when being moved to 106 engagements of relevant locking nut by the relevant guider 174 (Fig. 5) in crotch connector 184 edges with direction respect to one another, the locking member part 109 of each locking member 108 just locks, (it is not supporting the die worker position, applies as previously mentioned) any other load to wheel carrier so die support 94 directly locks each other.In the mould of closure and locking, the parison that has sealed is carried out blow molding then, and rotating to blow molded product cooling the process of opening station 116 through about 3/4 revolution in a clockwise direction from closed station 114 shown in Figure 1.
When each die worker position 90 initial when arriving closed station 116 in the clockwise direction rotary course shown in the arrow 118, what taken place is initial as shown in figure 11 cam-operated, and the operation of cam push rod 110 shown in the operation of cam part 124a constraint dotted line discharges the pressure that keeps the mould complete closure on locking mechanism.Then, wheel disc is rotated further, and causes the locking cam 126 constraint locking cam push rods 112 of closed station to unclamp locking mechanism 102.(locking cam 126 is moved to the left crotch connector 184 herein when the wheel disc spins makes the die worker position move to the position of Figure 12, so locking member 108 is moved to the released position, this moves relative to each other by foregoing lock part 109 and locking nut 106 breaks away from engagement and realizes) lockout of mould.Unclamp after the mould as mentioned above, wheel disc 44 leads to the continuation motion of Figure 13 position with the direction of arrow 118 and causes the operation of cam 124 of die sinking station 116 that operation of cam push rod 110 is removed mutually from the position of Figure 12, so that open the die worker position by removing mutually of die support 94.Open after the die worker position 90, blow molded product can be ejected, and the die worker position then prepares carry out following one-period.
Each gas spring of this machine all has structure as shown in figure 23, and it has a barrel shrond 224, and it holds a piston 226 with the relation (being provided by an annular seal 228) of sealing slidably.Each piston 226 also comprises a piston brace rod 230, and this bar 230 outwards passes an end 232 of this shell with sealing relationship (being provided by the annular seal 234 of size less than sealing 228) by the piston place and extends.230 pairs of relevant cam biasings (as previously mentioned) of this piston brace rod.The other end 236 of shell 224 comprises gas feed 238, provide compressed air by it, to piston 226 biasings, so bar 230 allows bar to move inward with the gas spring bias voltage along with as shown in the figure packed-piston is withstood an end 232 of shell to applying bias simultaneously.Certainly, also can utilize other gas spring structure, for example have the piston that is connected to similar runner sealing, it can provide vacuum seal, still can provide the fexible bias pressure that affacts the Compressed Gas on the piston simultaneously.
Referring to Figure 24, comprise a compressed gas source 242 (for example compressed nitrogen of every square cun of about 3000 pounds of pressure) with the 240 gas supply systems that indicate usually, be used for being added to the valve assembly 246 of this system by a conduit 244.This valve assembly 246 comprises that closed procedure control valve 248, one opening operation control valves, 250, one closed-lock control valves 252 and a dozen unblank to decide control valve 254.In these valves (248,250,252,254) each all is adjustable, thereby can control the pressure size that is sent to related gas springs.More particularly, closed procedure valve 248 gives conduit 256 pressurizations, this conduit and a compensator 258 UNICOMs, conduit 260 pressurizations that compensator 258 links for the inlet of the operating gas spring 136 of a pair of and closed station 114.Equally, open operation valve 250 gives conduit 262 pressurizations, the latter and compensator 264 UNICOMs, and compensator 264 and a pair of conduit 266 UNICOMs, conduit 266 pressurizes for the operating gas spring 138 of opening station 116.Closed-lock valve 252 is connected to conduit 268, and the latter is connected to conduit 270, the inlet UNICOM of the latter and closed-lock gas spring 140 with jar 268 UNICOMs, jar 268.Equally, open lock-up valve 254 and receive conduit 272, the latter and jar 274 UNICOMs, jar 274 is received conduit 276, the latter and the inlet UNICOM of opening locking gas spring 142, each jar 258,264,268 and 274 all allow the elastic piston of relevant locking gas spring to move during machine operation, and the adjusting by related valves simultaneously provides a substantially uniform air pressure.In addition, two compensators 258 provide identical cam orientation power with 264 pairs two the operating gas springs by its air feed, so all be applied in the power of symmetry on two die supports of each die worker position in closed and opening procedure.The compressed air power that is applied on the locking cam moves less than imposing on the power on the operation of cam thereby can allowing locking cam to go up at the supporting arm (as previously mentioned) of supporting operation of cam.
Carry out best mode of the present invention although be described in detail, yet the experts of those technical fields related to the present invention can expect various implementations other possible design of the present invention and concrete device, as what following claim limited.
Claims (22)
1. a plastic blow molding machine comprises: a base; One comprises a wheel disc that is bearing in the wheel carrier that rotates around horizontal axis of rotation on the base; Described wheel carrier comprise at least two parallel to each other along the separated wheel carrier part of rotation; A plurality ofly be installed in die worker position on the wheel disc around rotation; Each die worker position comprises at least one wheel carrier Connection Element, and it extends between the wheel carrier part of wheel disc; Each die worker position comprises that a pair of die support is in order to install a pair of mould part of a mould respectively; This of each die worker position is installed on its Connection Element die support and is parallel to rotation between the mold closing position in order to the die cavity that partly forms a sealing at mould part die sinking position separated from each other and mould and moves; Each die worker position has the operation of cam push rod to be used for moving respectively its die support; Mold closing and die sinking station are separated mutually along the motion path round rotation of die worker position when the fooled wheel disc of base rotates around rotation; Each all comprises relevant operation of cam mold closing and die sinking station, and they are installed on the base operation of cam push rod of each die worker position on the mobile respectively wheel disc; Being used for rotating wheel disk with a drive unit comes mobile die worker position through mold closing and die sinking station, closed and open mould on the die support and make the mould of opening to accept the plastic parison of the heat extruded from an extruder at this two station manipulations cam move operation cam follower, then mould closes and carries out blow molding in the mold cavity that is incorporated in sealing, it is characterized in that, each die worker position comprises a locking mechanism, and there be a pair of be installed in respectively on the die support and by the lock on the opposite face of the mould of its supporting in this mechanism; Each lock is included in the nut that tightens on the relevant die support; Each lock also has a locking element, it is installed on another relevant die support, and when moving to latched position, tighten nut and be meshed and keep related die to be in the close position with die support relevant, and each locking element is movable to a released position and breaks away from the engagement that tightens nut with a die support, thereby allows die support and move to die sinking position by the mould of its installation; Each die worker position has a locking cam push rod in order to move its locking element; Each comprises a locking cam mold closing and die sinking station, and this locking cam is installed in the locking cam push rod that moves each die worker position on the base and locks and the locking element that unclamps the locking mechanism of this die worker position; With at least one operating gas spring, being used for operation of cam to mold closing and die sinking station applies skew pressure to make it enter into the cam work position closed and open mould on the die support with the move operation cam follower, this gas spring offset assembly is with all moulds on the die support with the irrelevant closed wheel disc of uniform force of cam follower, die support and mould tolerance, removable its gas spring skew pressure that heads on of each operation of cam under the situation that die support breaks down.
2. plastic blow molding machine as claimed in claim 1, it is characterized in that each mold closing and die sinking station comprise that also a locking gas spring is used for its locking cam is applied skew pressure, make cam enter into the operating position so that the locking cam push rod of mobile die worker position, and locking element is moved between locking and released position, removable its gas spring skew pressure that heads on of each locking cam under the situation that locking mechanism breaks down.
3. plastic blow molding machine as claimed in claim 1, it is characterized in that each die worker position comprises that a pair of die support that is installed in respectively is to last operation of cam push rod, each mold closing and die sinking station comprise a pair of operation of cam, described a pair of operation of cam during machine operation, move each die worker position respectively that to the operation of cam push rod.
4. plastic blow molding machine as claimed in claim 3, each all comprises a pair of operating gas spring to it is characterized in that mold closing and die sinking station, and they apply skew pressure to its a pair of operation of cam respectively makes it enter into cam follower with the die worker position to relevant cam work position.
5. plastic blow molding machine as claimed in claim 4, it is characterized in that each the die worker position on wheel disc all comprises a single locking cam push rod that is associated with its die support, locking element is mounted thereto to move locking element between locking and released position, and mold closing and die sinking station each comprise that all a single locking cam is used for the locking cam push rod of mobile die worker position.
6. plastic blow molding machine as claimed in claim 5, it is characterized in that each mold closing and die sinking station all comprise a pair of supporting arm, a pair of operation of cam is installed in the above, and each mold closing and die sinking station also have a pair of operating gas spring, and they make it that operation of cam on it is placed into the cam work position to supporting arm to applying skew pressure respectively.
7. plastic blow molding machine as claimed in claim 6, it is characterized in that each mold closing and die sinking station all have the single locking cam that is installed on the one supporting arm, and each mold closing and die sinking station also have a single locking gas spring, and this gas spring stretches locking cam is applied skew pressure between a described supporting arm and locking cam mounted thereto and moves it the cam work position.
8. plastic blow molding machine as claimed in claim 7, the supporting arm that it is characterized in that each mold closing and die sinking station all has a pivot coupling device, be used for it is installed in base, the locking cam of each mold closing and die sinking station all has a pivot coupling device, is used for it is installed in a described supporting arm of described station.
9. as claim 6,7 or 8 plastic blow molding machine, the supporting arm that it is characterized in that each mold closing station is to all comprising an idle running jockey, this device stretches the skew pressure that the operation of cam that makes on it heads on relevant operating gas spring and is positioned at the cam work position between base and supporting arm, and moves when mould is closed the skew pressure that also allows to head on relevant operating gas spring when back and die support break down.
10. as claim 6,7 or 8 plastic blow molding machine, the every pair of supporting arm that it is characterized in that the die sinking station comprises a guiding device, and this guiding device stretches between base and supporting arm, is providing guiding for supporting arm in the motion of relevant pivot coupling device.
11. plastic blow molding machine as claimed in claim 1, it is characterized in that it comprises three along the flatly separated each other wheel carrier part of rotation, wherein two wheel carriers partly are end wheel carrier parts, they are set on the relative face of another wheel carrier part (it is a center wheel carrier part), each die worker position comprises a pair of wheel carrier Connection Element, described Connection Element partly and between the center wheel carrier part stretches at the end wheel carrier of wheel carrier, and with its die support partly be mounted to come mould open and closing position between move, all there is the pinion of a swivel bearing on center wheel carrier part each die worker position, and each die support of each die worker position all has a relevant tooth bar, and it and pinion are coordinated the mutual motion of die support part.
12. plastic blow molding machine as claim 11, it is characterized in that each die worker position comprises that a pair of its die support that is installed in respectively is to last operation of cam push rod, and each mold closing and die sinking station all comprise a pair of operation of cam, the pinion of center wheel carrier part and the die support that is installed in the die worker position respectively on the coordinative role of tooth bar under, this is right to the operation of cam push rod that cam promotes each die worker position respectively.
13. plastic blow molding machine as claim 12, it is characterized in that each die worker position comprises that all one is installed in the single locking cam push rod on its die support, locking element is installed on the die support to move between latched position and ejected position, and each mold closing and die sinking station comprise that also a single locking cam is used for the locking cam push rod of mobile die worker position.
14. plastic blow molding machine as claim 13, the every pair of lock that it is characterized in that the locking mechanism of each die worker position all comprises and a pair ofly tightens nut on the one die support, and the locking element on another die support is designed to comprise the pair of locking part, and these lock parts are moved between locking and released position respectively and break away from and relevant on another die support tightens the right engagement of nut.
15. plastic blow molding machine as claim 14, the every pair of lock that it is characterized in that the locking mechanism of each die worker position all comprises a pair of separated locking element guide member, these guide members respectively with the lock part of relevant locking element to being installed on the relevant die support, make the lock part between locking and released position, tighten nut to motion with respect to being associated on another die support.
16. as claim 13,14 or 15 plastic blow molding machine, it is characterized in that each die worker position comprises a crotch connector, it has a bar that is connected on the locking cam push rod on the relevant die support, and a pair of separated support is arranged, they from the lock that extends at the bar on the relative face of die worker position and be connected to locking mechanism respectively on provide condition for the motion of locking element between locking and released position.
17. plastic blow molding machine as claim 13, it is characterized in that each mold closing and die sinking station comprise that all a pair of operating gas spring is used for respectively making cam enter into the cam work position to its operation of cam to applying skew pressure, and each mold closing and die sinking station comprise that a single locking gas spring is used for that its single locking cam is applied skew pressure and makes cam enter the cam work position.
18. plastic blow molding machine as claim 17, it is characterized in that each mold closing and die sinking station all comprise a pair of supporting arm, it is right that operation of cam is installed on arm, and each mold closing and die sinking station all have a pair of operating gas spring respectively its supporting arm to be positioned the operation of cam on the arm for the cam work position to applying skew pressure.
19. plastic blow molding machine as claim 18, it is characterized in that all that it is the single locking cam of each mold closing and die sinking station is installed on the one supporting arm, and each mold closing and die sinking station extend this locking cam is applied skew pressure its single locking gas spring to make it enter the cam work position between a described supporting arm and locking cam mounted thereto.
20. plastic blow molding machine as claim 19, each supporting arm that it is characterized in that each mold closing and die sinking station all has a pivot coupling device to be used for it is installed in base, and the locking cam of each mold closing and die sinking station all has a pivot coupling device to be used for it is installed in a described supporting arm of this station.
21. as claim 18,19 or 20 plastic blow molding machine, the every pair of supporting arm that it is characterized in that the mold closing station comprises an idle running jockey, this device extends the skew pressure that heads on relevant operating gas spring operation of cam is positioned on the cam work position between base and supporting arm, and also allows its skew pressure that heads on relevant operating gas spring to move after the mould closure and when die support breaks down.
22. as claim 18,19 or 20 plastic blow molding machine, the every pair of supporting arm that it is characterized in that the die sinking station comprises a guide member, and this guide member is extending between base and the supporting arm to provide guiding at supporting arm in the motion of associated pivot jockey.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93102691A CN1050089C (en) | 1993-02-27 | 1993-02-27 | Plastic blow molding machine of the wheel type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN93102691A CN1050089C (en) | 1993-02-27 | 1993-02-27 | Plastic blow molding machine of the wheel type |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1091355A CN1091355A (en) | 1994-08-31 |
| CN1050089C true CN1050089C (en) | 2000-03-08 |
Family
ID=4984222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN93102691A Expired - Fee Related CN1050089C (en) | 1993-02-27 | 1993-02-27 | Plastic blow molding machine of the wheel type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1050089C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6709261B2 (en) * | 2001-03-23 | 2004-03-23 | Graham Packaging Company, L.P. | Multi-parison/dual cavity wheel blowmolds |
| CN113580537B (en) * | 2021-07-07 | 2024-04-05 | 深圳市捷创新材料股份有限公司 | Blow-out product with uniform wall thickness and manufacturing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3310834A (en) * | 1963-10-30 | 1967-03-28 | Continental Can Co | Plastic bottle molding machine |
| US3537134A (en) * | 1967-10-20 | 1970-11-03 | Samco Inc | Machine for continuously blow-molding hollow resin plastic articles |
| CN85101777A (en) * | 1985-04-01 | 1987-01-31 | 欧文斯-伊利诺衣公司 | Blow moulding machine |
| US4648831A (en) * | 1984-03-28 | 1987-03-10 | Owens-Illinois, Inc. | Blow molding apparatus |
-
1993
- 1993-02-27 CN CN93102691A patent/CN1050089C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3310834A (en) * | 1963-10-30 | 1967-03-28 | Continental Can Co | Plastic bottle molding machine |
| US3537134A (en) * | 1967-10-20 | 1970-11-03 | Samco Inc | Machine for continuously blow-molding hollow resin plastic articles |
| US4648831A (en) * | 1984-03-28 | 1987-03-10 | Owens-Illinois, Inc. | Blow molding apparatus |
| CN85101777A (en) * | 1985-04-01 | 1987-01-31 | 欧文斯-伊利诺衣公司 | Blow moulding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1091355A (en) | 1994-08-31 |
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