CN101966750A - Extrusion blow molding machine-head-and-die-orifice gap electrical adjustment device and realization method and application thereof - Google Patents
Extrusion blow molding machine-head-and-die-orifice gap electrical adjustment device and realization method and application thereof Download PDFInfo
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- CN101966750A CN101966750A CN2010102669002A CN201010266900A CN101966750A CN 101966750 A CN101966750 A CN 101966750A CN 2010102669002 A CN2010102669002 A CN 2010102669002A CN 201010266900 A CN201010266900 A CN 201010266900A CN 101966750 A CN101966750 A CN 101966750A
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000010101 extrusion blow moulding Methods 0.000 title claims abstract description 7
- 230000008878 coupling Effects 0.000 claims abstract description 28
- 238000010168 coupling process Methods 0.000 claims abstract description 28
- 238000005859 coupling reaction Methods 0.000 claims abstract description 28
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 239000000853 adhesive Substances 0.000 claims description 22
- 230000001070 adhesive effect Effects 0.000 claims description 22
- 230000008569 process Effects 0.000 claims description 10
- 238000000465 moulding Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 238000000071 blow moulding Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000005457 optimization Methods 0.000 claims description 2
- 230000004044 response Effects 0.000 abstract description 4
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- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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Abstract
The invention provides an extrusion blow molding machine-head-and-die-orifice gap electrical adjustment device. The device comprises motors, a belt, a reversing device, a speed reduction machine, a coupling, a ball screw pair, a thrust roller bearing, a sleeve and a core rod, wherein the belt is a synchronous belt; the reversing device is a clutch reversing device and comprises two input end covers and an output shaft; the two input end covers are connected with two motors through the synchronous belt respectively; the output shaft is connected with the input end of the speed reduction machine; the output shaft of the speed reduction machine is connected with the ball screw pair through the coupling; the sleeve comprises a sleeve with a chute and a sleeve with a cross sliding block; the thrust roller bearing is arranged in the step at the upper end of the sleeve with the chute; the sleeve with the chute and the sleeve with the cross sliding block is arranged coaxially; and the two ends of the sleeve with the cross sliding block is connected with the core rod and a nut of the ball screw pair respectively. The invention simultaneously provides a realization method and application of the device. The device has the advantages of high transmission efficiency, precise positioning, environmental friendliness, compact and reliable structure, quick response and the like and is suitable for popularization in industrial production.
Description
Technical field
Macromolecular material extrusion-blown modling technology is specifically related to a kind of extrusion-blown modling parison handpiece die gap motorized adjustment device and its implementation and application.
Background technology
Blowing is one of three big forming techniques of macromolecular material.When adopting extrusion-blown modling technology moulded products in early days, the die gap of parison handpiece is generally constant, because the blow-up ratio difference of the axial diverse location of parison is subjected to the influence of parison swell and drawdown phenomenon simultaneously, is difficult to guarantee the uniformity of product wall thickness distribution.Therefore, in the parison formation process, need carry out die gap and regulate, system of parison wall thickness be distributed control, thereby obtain Thickness Distribution goods uniformly.The head die orifice slack adjuster of tradition extrusion-blown modling machinery adopts hydraulic system to drive, and has shortcomings such as precision is low, energy consumption is high, hydraulic oil is easily revealed, environment is unfriendly.
Parison handpiece die gap motorized adjustment device is through years of development, progressively develop by mechanical adjustment structures such as early stage cam, connecting rods and to be the structure of " motor-screw mandrel ", " motor-screw mandrel " structure can be divided into usually regulates plug and two kinds of mouthful moulds, but there are shortcomings such as complex structure, cost height, applied widely so far.For example, the patent No. be US 5851570 U.S. Patent Publication a kind of extrusion-blown modling head die mouth gap motorized adjustment device.As shown in Figure 1, this device mainly comprises motor 50, gear train 62 and 64, nut 46, roller bearing 60 and connecting rod 26.The gear 64 of motor 50 drive installations on its output shaft drives nuts 46 rotations of being fixed by a pair of roller bearing 60 by the gear 62 that is engaged with.The upper end of connecting rod 26 is provided with screw thread, constitutes ball wire bar pair with nut 46.Because nut 46 can only rotate and can not move vertically, so but its rotation drive link 26 move vertically, thereby the drive plug moves vertically, the adjusting of realization die gap.The shortcoming of this method is in order to realize the axially-movable of plug, and motor needs frequent forward and reverse switching, makes its heating serious, and shorten service life; In addition, for comparatively complicated goods, require in a molding cycle die gap repeatedly to be regulated, therefore response speed and the load capacity to motor proposed higher requirement, and the production of equipment and manufacturing cost are very high.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, response fast, the motorized adjustment device in accurate positioning and lower-cost extrusion-blown modling head die mouth gap.
Another object of the present invention is to provide the motorized adjustment method in a kind of precise control that realizes by said apparatus, the easy to operate and extrusion-blown modling head die mouth gap that is easy to use.
A further object of the present invention is to provide the application of above-mentioned extrusion-blown modling head die mouth gap motorized adjustment device and implementation method.
Purpose of the present invention is achieved through the following technical solutions: the motorized adjustment device in a kind of extrusion-blown modling head die mouth gap comprises motor, belt, reversing arrangement, reductor, shaft coupling, ball wire bar pair, thrust roller bearing, sleeve and plug.Described belt is synchronous band.Described reversing arrangement is the clutch reversing arrangement, comprises two input end caps and an output shaft; Described two input end caps are connected respectively with two motors by synchronous band; Described output shaft links to each other with the input of reductor.The output shaft of described reductor is connected with ball screw by shaft coupling.Described sleeve comprises the sleeve of being with chute and the sleeve of being with crosshead shoe; Described thrust roller bearing is installed in the step of the sleeve upper end of being with chute; The sleeve of described band chute and the coaxial installation of sleeve of being with crosshead shoe.The sleeve two ends of described band crosshead shoe are connected with the nut of plug and ball wire bar pair respectively.
Described clutch reversing arrangement comprises three clutches, the shared output shaft of described three clutches, the input of one of them has been fixed braking action, and in addition two clutches are driven respectively by the motor of a pair of switched in opposite, is carved with when arbitrary and has only a clutch energising adhesive.
Especially, described clutch reversing arrangement is made of the clutch of three shared output shafts, and the input of one of them clutch has been connected braking action with shell, is referred to as brake coupling; The input end cap of two clutches is connected with the motor of two switched in opposite in addition, is called forward clutch and reversing clutch.There is and has only a clutch energising adhesive at any time.When forward clutch energising adhesive, the output shaft of clutch reversing arrangement is rotated in the forward; When brake coupling energising adhesive, output shaft stops operating; When the reversing clutch adhesive, the output shaft reverse rotation of clutch reversing arrangement.
The sleeve two ends of described band crosshead shoe are connected by the nut of trip bolt with plug and ball wire bar pair respectively, coaxial installation of three and relative fixed.
The sleeve of described band crosshead shoe cooperates by chute and space of slider with the sleeve of band chute, stops the nut of ball wire bar pair to rotate, and allows it to move vertically.
A kind of extrusion-blown modling head die mouth gap motorized adjustment method of utilizing said apparatus to realize, comprise the steps: that mainly described brake coupling dead electricity discharges, just (or anti-) is to clutch energising adhesive, the clutch reversing arrangement just (or anti-) to output, by reductor and shaft coupling drive ball screw just (or anti-) to rotation, since ball screw by thrust roller bearing axial restraint and the nut of ball wire bar pair because of being connected and can not rotating with the sleeve of being with crosshead shoe, thereby make upwards (or down) motion of nut, drive upwards (or down) motion of plug then; When plug arrived desired location, just (or anti-) to the clutch dead electricity, brake coupling energising adhesive, and an adjustment process is finished in the stop motion of parison handpiece die gap adjusting device.In the molding cycle of a parison, can repeatedly carry out above-mentioned adjustment process according to the actual requirements, thereby obtain the parison of required Thickness Distribution.
Above-mentioned die gap motorized adjustment device and its implementation may be used on comprising batch (-type) extrusion blow molding machine tool, continous way extrusion blow molding machine tool and extrude in the equipment of stretch blow moulding tool, realizes in the parison extrusion adjusting and optimization to system of parison wall thickness.
The present invention compares with existing head die gap motorized adjustment device, has following advantage and effect: (1) compact conformation, reliable operation.The present invention adopts the connected modes that compactness is reliable, impact is less such as clutch, shaft coupling, trip bolt, and need not adopt gear and sprocket wheel etc. the drive mechanism of gap and impact may occur in reciprocating motion.(2) to motor require low.The present invention can adopt common electric machine to drive, and has avoided requiring the problem that motor should respond the higher load ability fast again in the prior art, has reduced the cost of equipment, and is easy to utilize.(3) response is applicable to the moulding of the part with complicated structure rapidly.Among the present invention, the clutch adhesive and the release time of clutch reversing arrangement are very short,, can repeatedly regulate die gap in the cycle at a parison formation, are applicable to the moulding of complicated goods of Thickness Distribution.
Description of drawings
Fig. 1 is a head die gap motorized adjustment schematic representation of apparatus among the existing patent US 5851570.
Fig. 2 is the structural representation of extrusion-blown modling head die mouth of the present invention gap motorized adjustment device.
Fig. 3 and Fig. 4 are the exploded sketch of extrusion-blown modling head die mouth of the present invention gap motorized adjustment device.
Fig. 5 is the structural representation of the clutch reversing arrangement of device shown in Figure 2.
Fig. 6 is the structural representation of sleeve of the band crosshead shoe of device shown in Figure 2.
Fig. 7 is the structural representation of sleeve of the band chute of device shown in Figure 2.
Fig. 8 is the schematic diagram of extrusion-blown modling head die mouth of the present invention gap another structure of motorized adjustment device.
Fig. 9 is the schematic diagram of the another structure of extrusion-blown modling head die mouth gap motorized adjustment device of the present invention.
Above-mentioned each number in the figure is described as follows: 1-1-forward drive motor; 1-2-reverse drive motor; 2-clutch reversing arrangement; The 2-1-output shaft; 2-2-positive input lid; 2-3-reverse input end lid; The 2-4-forward clutch; The 2-5-reversing clutch; The 2-6-brake coupling; The 2-7-shell; The 3-reductor; The 4-shaft coupling; The 5-ball wire bar pair; The 5-1-ball screw; The 5-2-nut; The 6-thrust roller bearing; 7,9-trip bolt; The sleeve of 8-band crosshead shoe; The 8-1-slide block; The 11-plug; The sleeve of 13-band chute; The 13-1-chute; 15-is with synchronously.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing, but embodiments of the present invention are not limited thereto.
Embodiment
Concrete structure of the present invention is seen Fig. 2～7.Fig. 2～7 shows, this extrusion-blown modling head die mouth gap motorized adjustment device comprise motor 1-1 and 1-2, synchronously with 15, the plug 11 that connects of the sleeve 8 of the sleeve 13 of clutch reversing arrangement 2, reductor 3, shaft coupling 4, ball wire bar pair 5, thrust roller bearing 6, band chute, band crosshead shoe and being attached thereto etc.
Described clutch reversing arrangement 2 adopts the clutch pack zoarium that is made of forward clutch 2-4, reversing clutch 2-5 and brake coupling 2-6, its positive input lid 2-2 and reverse input end lid 2-3 are with 15 to be connected with 1-2 with motor 1-1 by described respectively synchronously, when forward clutch 2-4 or reversing clutch 2-5 energising adhesive, output shaft 2-1 is connected with input end cap 2-2 or 2-3, forms output forward or backwards; During brake coupling 2-6 energising adhesive, output shaft 2-1 and shell 2-7 are connected to form braking.The output shaft 2-1 of described clutch reversing arrangement links to each other with the input of reductor 3, and the output shaft of reductor 3 is connected with ball screw 5-1 by shaft coupling 4.Ball screw 5-1 is installed on the thrust roller bearing 6, and thrust roller bearing 6 is installed in the sleeve 13 of band chute; The nut 5-2 of ball wire bar pair is installed in the sleeve 8 of band crosshead shoe, and slide block 8-1 can move in chute 13-1 vertically; The two ends of the sleeve 8 of described band crosshead shoe link to each other with plug 11 with nut 5-2 with 9 by trip bolt 7 respectively.
The entire work process of extrusion-blown modling head die mouth provided by the present invention gap motorized adjustment device is: brake coupling 2-6 dead electricity discharges, the forward clutch 2-4 adhesive of switching on, the output of clutch reversing arrangement 2 forwards drives ball screw 5-1 by reductor 3 and shaft coupling 4 and is rotated in the forward; Because the slide block 8-1 among the chute 13-1 stops nut 5-2 to rotate, so the rotation of ball screw 5-1 drive nut 5-2 moves upward vertically; Described nut 5-2 is connected with the sleeve 8 of plug 11 by the band crosshead shoe, thereby the drive plug 11 that moves upward of nut 5-2 moves upward vertically.After plug 11 arrived desired locations, forward clutch 2-4 dead electricity discharged, the brake coupling 2-6 adhesive of switch on, and the adjustment process of extrusion-blown modling head die mouth gap increase (or reducing) is finished in the stop motion of parison handpiece die gap adjusting device.Similarly, when reversing clutch 2-5 energising adhesive, clutch reversing arrangement 2 is oppositely exported, driving plug 11 moves downward vertically, after plug 11 arrives desired location, reversing clutch 2-5 dead electricity discharges, and the adjustment process that extrusion-blown modling head die mouth gap reduces (or increase) is finished in the brake coupling 2-6 adhesive of switch on.In the one-period of parison formation, repeat repeatedly above-mentioned adjustment process, can obtain having the parison of required Thickness Distribution.
This extrusion-blown modling head die mouth gap motorized adjustment device is applied to a continous way extrusion blow molding machine tool, and the parison handpiece port mould diameter is 30mm, and melt pressure is not more than 10MPa in the head, and parison length is 300mm, and molding cycle is 8～10s.Described motor 1-1 and 1-2 select common three phase alternating current motor for use, and rated power is 0-75～1.5kW, and rotating speed is 1400rpm.As calculated, the regulating load of parison handpiece die gap is about 25～30kN, and selects the model of described clutch reversing arrangement 2 in view of the above, and its pickup time, release time was less than 50ms less than 25ms.The speed reducing ratio of described reductor 3 is 50.The nominal diameter of described ball screw 5-1 is 50～63mm, helical pitch 8～12mm.Total kilometres with die orifice gap adjustment in the molding cycle are that 10mm is an example, and then the interior described parison handpiece die gap motorized adjustment device of molding cycle can be finished gap adjustment 40～75 times.
Above-described only is preferred implementation of the present invention, but embodiments of the present invention are not restricted to the described embodiments, and also can adopt other schemes.The clutch reversing arrangement can adopt the structure (as shown in Figure 8) of the clutch pack zoarium of brakeless clutch as described; For the not high occasion of regulating frequency, also can adopt two clutches (as shown in Figure 9) of output shaft parallel connection to substitute described clutch reversing arrangement, the output shaft switched in opposite of these two clutches is carved with when arbitrary and has only a clutch energising adhesive; Described motor can be used common electric machine, also can adopt direct current generator and servomotor etc.; Described plug can be directly connected in the ball screw end; The also available various ways of described reductor and shaft coupling is replaced.Other any do not deviate from change, the modification done under spiritual essence of the present invention and the principle, substitutes, combination and simplifying, and all should be considered as the substitute mode of equivalence, is included within protection scope of the present invention.
Claims (9)
1. the motorized adjustment device in an extrusion-blown modling head die mouth gap comprises motor, belt, reversing arrangement, reductor, shaft coupling, ball wire bar pair, thrust roller bearing, sleeve and plug; It is characterized in that: described belt is synchronous band; Described reversing arrangement is the clutch reversing arrangement, comprises two input end caps and an output shaft; Described two input end caps are connected respectively with two motors by synchronous band; Described output shaft links to each other with the input of reductor; The output shaft of described reductor is connected with ball screw by shaft coupling; Described sleeve comprises the sleeve of being with chute and the sleeve of being with crosshead shoe; Described thrust roller bearing is installed in the step of the sleeve upper end of being with chute; The sleeve of described band chute and the coaxial installation of sleeve of being with crosshead shoe; The sleeve two ends of described band crosshead shoe are connected with the nut of plug and ball wire bar pair respectively.
2. extrusion-blown modling head die mouth according to claim 1 gap motorized adjustment device, it is characterized in that: described clutch reversing arrangement comprises three clutches, the shared output shaft of described three clutches, the input of one of them has been fixed braking action, in addition two clutches are driven respectively by the motor of a pair of switched in opposite, are carved with when arbitrary and have only a clutch energising adhesive.
3. extrusion-blown modling head die mouth according to claim 2 gap motorized adjustment device, it is characterized in that: described clutch reversing arrangement is made of the clutch of three shared output shafts, the input of one of them clutch has been connected braking action with shell, is referred to as brake coupling; The input end cap of two clutches is connected with the motor of two switched in opposite in addition, is called forward clutch and reversing clutch; There is and has only a clutch energising adhesive at any time; When forward clutch energising adhesive, the output shaft of clutch reversing arrangement is rotated in the forward; When brake coupling energising adhesive, output shaft stops operating; When the reversing clutch adhesive, the output shaft reverse rotation of clutch reversing arrangement.
4. extrusion-blown modling head die mouth according to claim 1 gap motorized adjustment device is characterized in that: the sleeve two ends of band crosshead shoe are connected coaxial installation of three and relative fixed respectively by the nut of trip bolt with plug and ball wire bar pair.
5. extrusion-blown modling head die mouth according to claim 1 gap motorized adjustment device, it is characterized in that: the sleeve of band crosshead shoe cooperates by chute and space of slider with the sleeve of band chute, stop the nut of ball wire bar pair to rotate, and allow it to move vertically.
6. an extrusion-blown modling head die mouth gap motorized adjustment method is characterized in that the output shaft that comprises the steps: the clutch reversing arrangement moves forward or backwards, drives ball screw and rotates forward or backwards; The sleeve of band crosshead shoe is connected with the nut of ball wire bar pair, stops it to rotate, and the rotation of ball screw drives nut and moves vertically; Nut is connected with the sleeve of plug by the band crosshead shoe, drives plug and moves vertically, and after plug arrived desired location, the adjustment process in a parison head die mouth gap was finished in the braking of clutch reversing arrangement.
7. extrusion-blown modling head die mouth according to claim 6 gap motorized adjustment method, it is characterized in that: the brake coupling dead electricity discharges, the adhesive of clutch energising forward or backwards, the clutch reversing arrangement is exported forward or backwards, driving ball screw by reductor and shaft coupling rotates forward or backwards, since ball screw by thrust roller bearing axial restraint and the nut of ball wire bar pair because of being connected and can not rotating with the sleeve of being with crosshead shoe, thereby nut is made progress or motion down, drive plug then and upwards or down move; When plug arrives desired location, clutch dead electricity forward or backwards, brake coupling energising adhesive, an adjustment process is finished in the stop motion of parison handpiece die gap adjusting device.
8. extrusion-blown modling head die mouth according to claim 6 gap motorized adjustment method is characterized in that: in the molding cycle of a parison, according to the actual requirements, repeatedly carry out the adjustment process of described parison handpiece die gap.
9. the application of an extrusion-blown modling head die mouth gap motorized adjustment method, the equipment that is applied to comprise batch (-type) extrusion blow molding machine tool, continous way extrusion blow molding machine tool and extrudes the stretch blow moulding tool is realized in the parison extrusion adjusting and optimization to system of parison wall thickness.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010266900 CN101966750B (en) | 2010-08-27 | 2010-08-27 | Extrusion blow molding machine-head-and-die-orifice gap electrical adjustment device and realization method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010266900 CN101966750B (en) | 2010-08-27 | 2010-08-27 | Extrusion blow molding machine-head-and-die-orifice gap electrical adjustment device and realization method and application thereof |
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| CN101966750A true CN101966750A (en) | 2011-02-09 |
| CN101966750B CN101966750B (en) | 2013-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009608A (en) * | 2012-12-28 | 2013-04-03 | 浙江机电职业技术学院 | Integrated device for controlling wall thickness by digital cam and servo motor |
| CN110757765A (en) * | 2019-11-05 | 2020-02-07 | 苏州同大机械有限公司 | Die gap offset adjusting device of blow molding machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2625136Y (en) * | 2003-04-08 | 2004-07-14 | 唐美春 | Continuous control device for wall thickness of hollow blow-mould formed embryo |
-
2010
- 2010-08-27 CN CN 201010266900 patent/CN101966750B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2625136Y (en) * | 2003-04-08 | 2004-07-14 | 唐美春 | Continuous control device for wall thickness of hollow blow-mould formed embryo |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009608A (en) * | 2012-12-28 | 2013-04-03 | 浙江机电职业技术学院 | Integrated device for controlling wall thickness by digital cam and servo motor |
| CN110757765A (en) * | 2019-11-05 | 2020-02-07 | 苏州同大机械有限公司 | Die gap offset adjusting device of blow molding machine |
| CN110757765B (en) * | 2019-11-05 | 2021-12-21 | 苏州同大机械有限公司 | Die gap offset adjusting device of blow molding machine |
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| CN101966750B (en) | 2013-04-10 |
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