CN102474155A - Device for producing translation movement - Google Patents
Device for producing translation movement Download PDFInfo
- Publication number
- CN102474155A CN102474155A CN2010800363664A CN201080036366A CN102474155A CN 102474155 A CN102474155 A CN 102474155A CN 2010800363664 A CN2010800363664 A CN 2010800363664A CN 201080036366 A CN201080036366 A CN 201080036366A CN 102474155 A CN102474155 A CN 102474155A
- Authority
- CN
- China
- Prior art keywords
- motor
- transmission device
- ball screw
- stretch
- rotor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
- B29C49/08—Biaxial stretching during blow-moulding
- B29C49/10—Biaxial stretching during blow-moulding using mechanical means for prestretching
- B29C49/122—Drive means therefor
- B29C49/123—Electric drives, e.g. linear motors
Abstract
The invention relates to a device (1) for producing a translation movement comprising an electric motor (2) provided with a rotor (4), said translation movement being obtained by transforming a rotational movement produced by the rotor (4) into a translation movement. Said rotor (4) is embodied as a nut of a ball screw drive (3) and inside the nut, a spindle (5) of the ball screw drive (3) is embodied as a transmission element of the translation movement.
Description
Explanation
The present invention relates to a kind of according to claim 1 as described in the preamble, in particular for the device of the lifting control of the stretch of blow moulding machine.
Prior art
The present invention relates to a kind of device that is used to produce translational motion, it comprises electro-motor, and this electro-motor itself has rotor, wherein, is transformed into translational motion by rotatablely moving of rotor generation.In general, therefore the present invention relates to a kind of linear shaft drive solution that is used for.This there is a belt drive unit as transmission device is known, crank gear, ball screw transmission device (KGT) or linear directly transmission device.Linear now directly transmission device (or electric linear motor) all plays a part very big for all Machine Types in fact.Line motor does not rotatablely move to the conversion of translational motion and can be deployed on the plane through the three-phase alternating current motor with rotation and explain visually with graphic mode when working.Although linear directly transmission device has lot of advantages, they also have shortcoming, like high system price, and with being heated strongly and high wasted power that high-intensity magnetic field and not enough power transmission are associated of machine construction, and big structure space.The linear directly advantage of transmission device is high positioning accuracy and simultaneously high adjusting dynamics (adjusting dynamic role).Aspect the amount of feeding, speed and dynamic centripetal force, high speed ball screw transmission device (H-KGT) has competitiveness because the total cost in machine tool industry is lower to the direct transmission device of linearity.The KGT transmission device is generally by electro-motor, ball screw transmission device be used for confirming that the measuring system of the position of movable support component forms.The ball screw transmission device uses ball as rolling element and be used for changing rotation motion into translational motion (for example lifter motion (linear reciprocating motion)).Because the contact of the point type of ball, transmission power is reduced greatly, forms less raceway wearing and tearing and has improved accessible translational speed and positioning accuracy.Relevant is less maintenance cost therewith, short process time and lower percent defective.
The main application fields of ball screw transmission device is a lathe, and wherein, the parts that move are fixed on the nut of ball screw transmission device and support through linear guiding mechanism simultaneously.Motor perhaps directly or through speed changer and belt drive unit drives the main shaft (screw rod) of adorning KGT.Between main shaft and nut, ball rolls in the rolling raceway groove as rolling element, and they move about when main axis rotation vertically.The ball of circulation all contacts two sides of screw thread at the every bit place under ideal situation (no gap).Adopt the pitch of main shaft as the distinctive characteristic of KGT, it is measured as the main shaft distance (lift) that mainshaft nut passes by that whenever turns around.Product by pitch and rotating speed draws the amount of feeding then.Classical solution, like belt drive unit, crank gear, and the ball screw transmission device with synchronous closed-type motor usually are being inferior to linear directly transmission device aspect accessible adjusting dynamics and the positioning accuracy.But on energy efficiency, the KGT transmission device is owing to the transmission through main shaft has tangible advantage.
As an example of the use of ball screw transmission device, can enumerate lifting control (lift control) to the stretch of blow moulding machine.For example DE102007008023Al proposes a kind of method and apparatus that container is made in blowing that is used for; In the method or this device in; By the thermoplastic blank processed of PET (polyethylene terephthalate (Polyethylenterephthalat)) for example, in blow mold, stretch afterwards and be molded to container through the blow pressure effect with stretch in thermal conditioning (heating).In the case; Using under the electromechanical formula stretch transmission device; In this stretch transmission device, rotatablely moving of the motor drive shaft of servo motor is transformed into the lifter motion of stretch through the coupling device of machinery, and the location of stretch is provided with in advance.In the document, described a kind of servo motor particularly, on its motor drive shaft, screw rod has been installed, itself is connected with the stretch support through coupling element (threaded sleeve), and stretch also is fixed on the stretch support.According to the document,, a kind of still high dynamic system with respect to the external loading rigidity is provided through servo motor is coupled through screw rod, threaded sleeve and stretch support and stretch.Through adopting measuring technique to measure the motor current of servo motor, can control according to the lifting that predetermined targeting scheme or predetermined power scheme carry out stretch.EP0577384Al proposes a kind of solution that similarly is used for the lifting control of blow moulding machine stretch.
The common performance of blowing process has been described in already mentioned DE102007008023Al.Insert blank in the blow mold and locking blowing station after, under the blow pressure support at the same time, earlier stretch is moved in the blank in this wise, make blank pass through inside blow mold and not radial contraction of axial tension in the stretch upper edge.After implementing drawing process fully, container blowing is expanded to the final profile of container and keeps maximum internal pressure power to reach enough shape stabilities up to container through cooling.This can support through the input cooling air.The shape stability input of blow pressure (and cooling air) afterwards is cut off and stretch also retracts from the container that is blow molded manufacturing from blow mold and thus reaching.That commonly used is so-called blower wheel (Blasr der), and they have many blow stations (Blasstation).Herein can be one after the other or also can synchronously carry out a plurality of blowings (blowing mould) processing.Point out clearly about other details of the blowing of container processing and to consult said document.
In the known lifting control by means of ball screw transmission device and servo motor driven device, shortcoming is low dynamic role (dynamics) and bigger structural volume.What therefore be worth expectation is; Provide a kind of translational motion that is used to produce; Device in particular for the lifting control of the stretch of blow moulding machine; This device is integrated and therefore have high as far as possible energy efficiency with the advantage of the solution of the advantage of the solution of direct transmission device and KGT, has the mechanical realization of high quality of regulation and low cost and non-maintaining as far as possible compactness simultaneously.
Of the present invention open
According to the present invention, a kind of device that is used to produce translational motion with characteristic of claim 1 is proposed.Advantageous embodiments is the theme of dependent claims and following specification.Claim 5 provides the purposes of lifting device.
Advantage of the present invention
The present invention relates to such method basically, even the ball screw transmission device becomes the part of direct transmission device, thereby without any need for the coupling of machinery.This is to realize like this; Promptly be configured to the nut of nut ball screw transmission device according to the rotor of the electro-motor of device of the present invention; And the main shaft (screw rod) that in this nut of ball screw transmission device, exists is configured to or is arranged to the transmitting element of translational motion, in particular for producing the lifting arm that promotes (motion).The main shaft of ball screw transmission device generally is the circulating ball screw rod, and it for example itself forms lifting arm or be connected with instrument (stretch), so that produce or implement translational motion (lifter motion).Become the characteristic of the nut of ball screw transmission device also should comprise the design that the nut of ball screw transmission device rotates with rotor the rotor design of electro-motor.Therefore unnecessary rotor and nut are constructed integratedly.Can prevent that main shaft from reversing through guiding mechanism.The nut that rotates with rotor should remain on the position through corresponding supporting, thereby main shaft can move through and implement thus the motion of translation.Under the applicable cases of the lifting control of the stretch of blow moulding machine, stretch can directly be fixed on the circulating ball screw rod of ball screw transmission device (KGT).
Use according to lifting device of the present invention and known to have stator winding and at the electro-motor (torque-motor) of inner rotor rotated.Preferred alternating current motor, especially servo motor, the more particularly torque-motor of using.Rotor (KGT-nut) preferably constant magnetized (through permanent magnet) and around stator in the rotating magnetic field of passive movement drive (syncmotor).Can certainly realize other motor type.Importantly the KGT-nut is used as rotor and itself do not carry out translational motion.It is rotatably supported in the frame, thereby the circulating ball screw rod that is arranged in its inside is placed in translational motion (lifter motion (linear reciprocating motion)).Through workpiece or tool holder are positioned on this main shaft, can make the motion of this workpiece or instrument translation ground now.
As mentioning, advantageously use servo motor, its operation can be carried out torque adjusting, speed regulation and/or position adjustments.This makes it to realize to adapt with different application.As more special servo motor, enumerate the use of torque-motor herein, it be a kind of do not have a speed changer have high torque (HT) and a slow-revving direct transmission device.Torque-motor can be counted as the large-scale servo motor with hollow shaft, and it is optimized with high moment of torsion.Torque-motor allows to be used to mobile and location tasks fast and accurately.Therefore torque-motor is particularly well suited to according to device of the present invention, and this device is used to produce translational motion, in particular for the lifting control of the stretch of blow moulding machine.
In a favourable execution mode, use distributing (distributed) inverter with distributing (non-central authorities) intelligence system (Intelligenz).The distributing inverter can have and is used for motor electronic installation that regulate and that be used for logical process.Can directly in transmission device, implement the processing of E/A (I/O) and sensor signal dispersedly by this way and realize the Machinery Design scheme of modular thus.Motor, adjuster and axis mechanism fuse into a unit by this way.Can provide the identical unit (unit that for example is used for stretch control) of structure of larger amt to supply to use and be affiliated to (connection) by this way to a master control mechanism.
According to the advantage that is used to produce the device of translational motion of the present invention be low-cost and energy-efficient high integration density down with so the version of the low wearing and tearing of compactness.Its use is effective especially in the application that with high quality of regulation and adjusting dynamics is precondition.The solution of the modular of mentioning (standard) member has distributing and handles the advantage of E/A and motor function can directly be set in transmission device.
The solution that is stressed that the high energy efficiency of high location dynamics and accuracy and motion control and/or adjusting in addition has the possibility that under the electric network fault situation, is used for the energy accumulator of fault reaction.Described advantage makes according to the device of the stretch control in particular for blow moulding machine of the present invention attractive.Present invention will be described in detail with reference to the accompanying below the embodiment and its advantage according to this.
Self-evident, the above-mentioned and following characteristic that also will discuss not only can be used under the combination that respectively provides, and can under other combination or individually, use, and does not depart from the scope of the present invention.
Description of drawings
Fig. 1 has shown the device that in a favourable execution mode, is used to produce translational motion
Fig. 2 has shown that schematically a kind of adjuster with a plurality of utilizations dispersions produces the system of the device of translational motion.
Self-evident, shown in figure in only very schematically show exemplary execution mode of the present invention.In addition also any different embodiment can be considered, and category of the present invention can be do not broken away from.
Fig. 1 shows a kind of in particular for producing the device 1 of (motion) with the view of very signal.Device 1 demonstrates electro-motor 2, torque-motor especially, and it comprises with lower component: frame 7 is surrounded stators (stator winding) 6 and is surrounded rotor 4, and rotor uses as the nut of ball screw transmission device.Rotor 4 is rotatably supported in the frame 7 through supporting (bearing) 9.Ball screw transmission device itself is represented with 3.The main shaft of ball screw transmission device 3 is represented with 5.Motor sensor 8 via line 13 are connected with electronic installation 10 effects, so that carry out logical process.In addition, electronic installation 10 via line 12 are connected with motor 2 effects, so that carry out the motor regulation and control.Electronic installation 10 relates in particular to a kind of distributing inverter, and it will be used for motor regulation and control and be used for the electronic installation of logical process integrated.
With thus when electro-motor 2 operations, rotor 4 (it is identical with ball screw transmission device nut 4 herein) rotates with the rotating speed longitudinal axis around oneself on the direction of rotation that can be scheduled to that can be scheduled to when the device that is used to produce up-down 1 operation.Ball screw transmission device 3 guides main shaft 5 (circulating ball screw rod) in its inside with known and mode that specify in the above, and it also can be called lifting arm in this case or use as lifting arm.Main shaft 5 is implemented translational motion on its axis direction.The lifter motion (linear reciprocating motion) that produces can be controlled or regulate through control motor 2.The amount of feeding of main shaft 5 is drawn by the product of the pitch of motor rotary speed and ball screw transmission device 3.Except lifter motion, device 1 also produces main shaft 5 the rotatablely moving of longitudinal axis around it.
Shown device is characterised in that to have high integration density (not having mechanical coupling) and under low-cost and high energy efficiency, have compact and versions low wearing and tearing thus.Especially it is effective especially using under as the applicable cases of prerequisite at high regulation and control quality and regulation and control dynamics.The possibility of the modular combiner solution of in specification, having mentioned has the advantage (via line 12 and 13 is carried out motor regulation and control or logical process) of dispersion treatment E/A and thus motor function can be set in drive unit directly.Outstanding is high location dynamic role and positioning accuracy in addition.
In device shown in Figure 11, between the rotatablely moving of the lifter motion of main shaft 5 and it (around its rotation of longitudinal axis), there is a kind of fixing relation.Additional rotatablely moving can help certain application.
High positioning accuracy and dynamic role add the advantage that other has been stated of the present invention, make that at the lifting device shown in Fig. 1 be attractive for the stretch control of blow moulding machine especially.Main shaft 5 is designed to lifting arm, itself is connected with stretch or can directly be configured to stretch for this reason.In known manner, obtain blowing air (possibly, cooling air), blank is blow molded into predetermined net shape in blow moulding machine by means of this blowing air through stretch.Can consult the specification the beginning part for this reason and consult the DE102007008023Al that mentions there once more clearly.By means of the invention of describing herein with at the execution mode shown in Fig. 1, the professional can draw the application of control/adjusting of the lifter motion of stretch thus.Stretch can advantageously be used in this application in the rotation at main shaft 5 places, applies the blowing air because can guarantee by this way more equably along the parison inner peripheral surface.
For device 1 shown in the lifting control of the stretch of blow moulding machine, using typical (by shown in device satisfy) requirement be shift motion (in the axial direction; Represent through double-head arrow in the drawings) be 30 to 50cm; Especially 40cm, translational speed is about 2.0m/s, the slide plate quality that be moved is about 8 to 10 kilograms; Especially 9 kilograms, (stretching force is that 1600 to 2000N (on slide plates) and blowing power are 1000N (under the slide plate) to tensile force.Drive unit should optimally so design, make with 1600 and 2000N between tensile force can keep the positioning accuracy of about 0.5mm during stretching and in the blowing process, keep the positioning accuracy of about 0.2mm.Shift motion draws by rotating the main shaft pitch that the number of turns multiply by ball screw transmission device 3 under known angular speed situation.
Compare with adopting the linear directly solution of transmission device, in the concrete situation example of draw unit, can the there consumption be reduced at least 50%.Aspect quality of regulation, in fact there is not variation.Actual use shown good applicability and in blow moulding machine, under the stretch motion control, pass through shown in lifting (motion) generation device satisfy all requirements.
Fig. 2 has schematically illustrated the system with a plurality of lifting generation devices and distributing adjuster thereof.Wherein show preceding two lifting devices 111 and 112 in the row lifting device.Under the electronic installation or the adjuster of joining represent with 101 and 102, lead to and be used for the circuit that motor regulates and represent with 121 and 122.By with 111,101 and 121 or 112,102, the subsystem that the element of 122 expressions is formed is consistent with the lifting device 1 of Fig. 1 basically.Can consult the description that is associated with Fig. 1 thus.Fig. 2 has additionally shown local transducer 141 or 142 and local executive component 151 or 152 combination, and they connect with the adjuster that disperses 101,102 through the corresponding standard (for example Sercos III) that is used to transmit with the data of time correlation.
Adjuster/the electronic installation 101,102 of each dispersion ... itself is connected with central electronic device 16 through being used to transmit with the corresponding standard (for example Sercos III) of the data of time correlation.This central electronic device is also by main frame more than (Multimaster) 17 controls.
The possibility of modular combined member solution has the advantage of dispersion treatment E/A and can motor function (Motionfunktionalit t) be set directly in the drive unit thus shown in figure 2.Can estimate local (part) E/A and the draw unit 131 that each is single like this; 132; ... can be regulated by distributing ground on the one hand, can be hung over together on the electronic installation 16 of central authorities on the other hand, so that regulate and/or control interrelatedly.
The Reference numeral table
1 lifting device
2 electro-motors
3 ball screw transmission devices
4 nuts, rotor
5 main shafts
6 stators
7 frames
8 motor sensor
9 supportings (bearing)
10 electronic installations
12 are used for the circuit that motor is regulated
13 are used for the circuit of logical process
16 central electronic devices
Main frame more than 17
101,102 electronic installations
111,112 lifting devices
121,122 are used for the circuit that motor is regulated
131,132 draw unit
141,142 transducers
151,152 executive components
Claims (5)
1. be used to produce the device of translational motion; It comprises the have rotor electro-motor (2) of (4); Wherein be used for the rotation motion that rotor (4) produces is changed into the mechanism of translational motion; It is characterized in that the transmitting element that said rotor (4) is designed to the nut of a ball screw transmission device (3) and the main shaft (5) of said ball screw transmission device (3) is designed to translational motion in this nut.
2. according to the described device of claim 1, it is characterized in that said electro-motor (2) is a servo motor, especially torque-motor.
3. according to claim 1 or 2 described devices, it is characterized in that, be used to carry out electronic installation (101,102) the quilt arrangement dispersedly that logical process was regulated and be used for to motor, especially be placed in the distributing inverter.
4. according to each described device in the claim 1 to 3, it is characterized in that said device is designed for producing the module of modular construction of the device (111,112) of translational motion.
5. according to the purposes of each described device (1) in the aforementioned claim, said device is used to the lifting control of the stretch of blow moulding machine.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009028602 | 2009-08-17 | ||
| DE102009028602.0 | 2009-08-17 | ||
| PCT/EP2010/061979 WO2011020834A1 (en) | 2009-08-17 | 2010-08-17 | Device for producing a translation movement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102474155A true CN102474155A (en) | 2012-05-23 |
| CN102474155B CN102474155B (en) | 2015-04-29 |
Family
ID=43302082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201080036366.4A Expired - Fee Related CN102474155B (en) | 2009-08-17 | 2010-08-17 | Device for producing translation movement |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN102474155B (en) |
| AT (1) | AT513002B1 (en) |
| DE (1) | DE102010039414A1 (en) |
| WO (1) | WO2011020834A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110345218A (en) * | 2019-07-14 | 2019-10-18 | 上海保良精密传动设备有限公司 | A kind of end cap recycles two channel ball spline pairs and processing technology |
| CN110345217A (en) * | 2019-07-14 | 2019-10-18 | 上海保良精密传动设备有限公司 | Four channel ball spline pairs of circulation and processing technology in a kind of |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0577384A1 (en) * | 1992-06-29 | 1994-01-05 | Hoover Universal,Inc. | Servo stretch assembly for blow moulding machine |
| DE4320205A1 (en) * | 1993-06-18 | 1994-12-22 | Fichtel & Sachs Ag | Actuator for a motor vehicle friction clutch |
| US5742143A (en) * | 1995-01-20 | 1998-04-21 | Kabushiki Kaisha Sankyo Seiki Seisakusho | Motor control system with selectively operated A/D convertor |
| DE19857805A1 (en) * | 1998-12-15 | 2000-06-21 | Uwe Plettenberg | Highly dynamic linear unit e.g. for telescope, has ball circulation nut connected directly to motor's rotor or via approximately coaxial hollow shaft gear, and ball circulation spindle passing through nut and rotor |
| DE102007008023A1 (en) * | 2007-02-15 | 2008-08-21 | Sig Technology Ag | Container molding method for blow station, involves positioning horizontal bar by using electro-mechanical horizontal bar drive, and transforming rotary movement of motor shaft into stroke movement of horizontal bar by coupling device |
| WO2008098565A2 (en) * | 2007-02-15 | 2008-08-21 | Khs Corpoplast Gmbh & Co. Kg | Method and device for blow moulding containers using a servo motor for the drawing bar |
-
2010
- 2010-08-17 AT ATA9283/2010A patent/AT513002B1/en not_active IP Right Cessation
- 2010-08-17 CN CN201080036366.4A patent/CN102474155B/en not_active Expired - Fee Related
- 2010-08-17 DE DE102010039414A patent/DE102010039414A1/en not_active Withdrawn
- 2010-08-17 WO PCT/EP2010/061979 patent/WO2011020834A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0577384A1 (en) * | 1992-06-29 | 1994-01-05 | Hoover Universal,Inc. | Servo stretch assembly for blow moulding machine |
| DE4320205A1 (en) * | 1993-06-18 | 1994-12-22 | Fichtel & Sachs Ag | Actuator for a motor vehicle friction clutch |
| US5742143A (en) * | 1995-01-20 | 1998-04-21 | Kabushiki Kaisha Sankyo Seiki Seisakusho | Motor control system with selectively operated A/D convertor |
| DE19857805A1 (en) * | 1998-12-15 | 2000-06-21 | Uwe Plettenberg | Highly dynamic linear unit e.g. for telescope, has ball circulation nut connected directly to motor's rotor or via approximately coaxial hollow shaft gear, and ball circulation spindle passing through nut and rotor |
| DE102007008023A1 (en) * | 2007-02-15 | 2008-08-21 | Sig Technology Ag | Container molding method for blow station, involves positioning horizontal bar by using electro-mechanical horizontal bar drive, and transforming rotary movement of motor shaft into stroke movement of horizontal bar by coupling device |
| WO2008098565A2 (en) * | 2007-02-15 | 2008-08-21 | Khs Corpoplast Gmbh & Co. Kg | Method and device for blow moulding containers using a servo motor for the drawing bar |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010039414A1 (en) | 2011-02-24 |
| AT513002B1 (en) | 2014-05-15 |
| AT513002A5 (en) | 2013-12-15 |
| WO2011020834A1 (en) | 2011-02-24 |
| CN102474155B (en) | 2015-04-29 |
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