CN201427370Y - Four-cylinder actuated-locking double-plate mold clamping mechanism with isometric displacement - Google Patents
Four-cylinder actuated-locking double-plate mold clamping mechanism with isometric displacement Download PDFInfo
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- CN201427370Y CN201427370Y CN2009201094706U CN200920109470U CN201427370Y CN 201427370 Y CN201427370 Y CN 201427370Y CN 2009201094706 U CN2009201094706 U CN 2009201094706U CN 200920109470 U CN200920109470 U CN 200920109470U CN 201427370 Y CN201427370 Y CN 201427370Y
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Abstract
The utility model discloses a double-plate mold clamping mechanism, in particular to a four-cylinder actuated-locking double-plate mold clamping mechanism with isometric displacement which is suitablefor injection machines. The mold clamping mechanism mainly comprises a moving mold plate, a fixed mold plate, pull rods, a mold adjusting device, an ejection mechanism, a mold moving oil cylinder, internal circulating mold locking oil cylinders, ordinary mold locking oil cylinders and displacement sensors, wherein the two internal circulating mold locking oil cylinders and the two ordinary mold locking oil cylinders are arranged in a diagonally symmetrical manner; the oil return sides of the ordinary mold locking oil cylinders are communicated with air and can accommodate the displacement sensors, so as to control the movement and relative position of the moving mold plate; and a volume adjusting sleeve is mounted on each pull rod, so as to ensure that during the mold moving process, thevolume changes of the oil return sides of the internal circulating mold locking oil cylinders are equal to the sum of the volume changes of the mold locking sides thereof as well as the volume changesof the mold locking sides of the ordinary mold locking oil cylinders. The mold clamping mechanism can meet the requirements of injection machines with various specification models, save materials andresources, reduce the processing difficulty and ensure stable performance.
Description
Technical field
The utility model relates to a kind of clamping, particularly relates to a kind of two-plate type mould clamping mechanism applicable to injection machine.
Background technology
Along with the raising of people to the plastic products instructions for use, the wall thickness of goods is more and more thinner, and requirement of strength is also more and more higher, and it is complicated that its mould then more becomes, the production efficiency of also having relatively high expectations simultaneously.Therefore, the precise injection machine that satisfies various functions even more help mould protection will more and more important, and determine that the key of the above-mentioned performance of injection machine is its clamping.
Clamping Device of Injection Moulding Machine mainly comprises two kinds of traditional full hydraulic clamping and Type of Toggle Clamping Units.Hydraulic system complexity, the speed of tradition full hydraulic clamping is slow, energy consumption is big, and the Type of Toggle Clamping Units precision is low, easy to wear, so the both can not satisfy the requirement of precise forming.Along with the development of plastics industry, characteristics such as two-plate type mould clamping mechanism is simple in structure with it, high-efficiency and precision become a kind of important form of Clamping Device of Injection Moulding Machine gradually.
Existing two-plate type mould clamping mechanism mainly contains compound and vertical compression type two classes.Compound two-plate type mould clamping mechanism will pass through mechanical switch, and promptly secondary action ability locked mode is also referred to as mechanical-hydraulic type two-plate type mould clamping mechanism.Compound two-plate type mould clamping mechanism if be used for the little machine of tonnage, can increase cost owing to need secondary action on the one hand, and on the other hand, because the desired folding mould of middle-size and small-size machine speed is very high, secondary action can influence efficient.Vertical compression type two-plate type mould clamping mechanism does not then need mechanical device, does not need secondary action yet, directly by Mode-locking oil cylinder with mold-locked.
That common vertical compression type two-plate type mould clamping mechanism mainly has or not is circulating, three kinds of outer circulation type and internal-circulation types.
The shifting formwork and the locked mode that do not have circulating clamping all rely on die cylinder, and die cylinder need be bigger by oil pump DFF Direct Fuel Feed and its diameter, can't coordinate the relation of power and speed preferably.And the quickly opening and closing mould needs powerful oil pump, and therefore, the hydraulic oil internal circulating load of this mechanism is big, the energy consumption height.
For the outer circulation type clamping, shifting formwork is undertaken by mould shifting oil cylinder, and the mould shifting oil cylinder diameter is little, can greatly improve folding mould speed; Locked mode is then undertaken by the bigger Mode-locking oil cylinder of diameter.In the shifting formwork process, its Mode-locking oil cylinder piston will be done servo-actuated with mould shifting oil cylinder, therefore, can occur a large amount of fluid circulations between Mode-locking oil cylinder two oil pockets, and energy consumption is big.Another kind of outer circulation type clamping communicates the chamber, the left and right sides of Mode-locking oil cylinder by the external hydraulic pipeline.Though this clamping is simple in structure, when shifting formwork, the Mode-locking oil cylinder piston can be subjected to big resistance, makes the shifting formwork bumpy motion.
At " mold closing mechanism of injection (mo(u)lding) machine " (US5336462) a kind of injection machine mold closing mechanism of internal-circulation type disclosed.This mold closing mechanism is the straight locks of four cylinders, in piston rod (the being pull bar) lining of the Mode-locking oil cylinder at one group of diagonal angle mould shifting oil cylinder is set, and this Mode-locking oil cylinder is common oil cylinder; And the Mode-locking oil cylinder at another group diagonal angle is interior circulating oil cylinder, and the locked mode side of four Mode-locking oil cylinders communicates with each other.During work, realize the shifting formwork action by the mould shifting oil cylinder of diagonal angle setting, the hydraulic oil of Mode-locking oil cylinder piston both sides is realized the inner loop of clamping hydraulic oil by communication passage and interior circulating oil cylinder; During locked mode, interior circulating oil cylinder spool is closed, and four Mode-locking oil cylinders act on simultaneously realizes specified clamp force.Be characterized in that shifting formwork speed is fast, locked mode is stable, and energy-saving effect is obvious; But the Tiebar structure complexity of this clamping, not only processing and manufacturing required precision height, difficulty are big, and owing to offer mould shifting oil cylinder in pull bar, have reduced the strength and stiffness of pull bar widely.When design, for the requirement of circulation in satisfying, the piston both sides effective area of Mode-locking oil cylinder must be proportional in addition, cause the pull bar size bigger, when requiring clamp force identical, need bigger cylinder diameter or the bigger pump of rated operating pressure, design flexibility is very low.At " vertical compression type mould-locking oil cylinder clamping " (ZL200520145200.2) a kind of internal recycling vertical pressing formula clamping mechanism with the mode transfer device disclosed; shifting formwork adopts the oil cylinder of two minor diameters; locked mode adopts the internal-circulation type oil cylinder of four double piston-rods, and its piston rod is the part of pull bar.The characteristics of this clamping are good reproducibilities, the precision height, and energy consumption is low, has satisfied the requirement of precise injection molding all sidedly.But four interior circulating oil cylinder processing capacities are big, the requirement on machining accuracy height; The required raw material of processing pull rod require length long, and the clamping size is big.
The utility model content
The purpose of this utility model is to overcome the shortcoming of circulation two-plate type mould clamping mechanism in the existing direct press type; a kind of isometric replaceable four-cylinder line-lock two-plate type clamping is provided; this clamping can adapt to needs, saving material and the energy, the reduction difficulty of processing of plurality of specifications model injection machine, guarantees stable performance.
For achieving the above object; the utility model is by the following technical solutions: a kind of isometric replaceable four-cylinder line-lock two-plate type clamping, mainly form by moving platen, solid plate, pull bar, mode transfer device, liftout attachment, mould shifting oil cylinder, interior circulation Mode-locking oil cylinder, common lock mould oil cylinder and displacement transducer.Mould shifting oil cylinder piston rod and moving platen are fixed, and the mould shifting oil cylinder cylinder body is fixed on the solid plate periphery; Interior circulation Mode-locking oil cylinder by with pull bar be that piston rod one, sleeve, valve seat, piston one and the cylinder body one of one formed, sleeve is arranged on the piston rod one, sleeve end face and guiding valve end face keep spacing one; The common lock mould oil cylinder by with pull bar be that piston rod two, sleeve, piston two and the cylinder body two of one formed, its oil back chamber communicates with air, sleeve two is arranged on the piston rod two, sleeve end face and piston end surface keep spacing two; Interior circulation Mode-locking oil cylinder and common lock mould oil cylinder have two respectively, and all are single-piston-rod hydraulic cylinder, and the diagonal angle symmetry is fixed on the solid plate; Interior circulation Mode-locking oil cylinder locked mode chamber and common lock mould oil cylinder locked mode chamber communicate by passage; Displacement transducer is arranged in the oil back chamber of common lock mould oil cylinder; Liftout attachment and mode transfer device are arranged on the moving platen.
Sleeve of the present utility model can with two in the piston rod one of circulation Mode-locking oil cylinder and the piston rod two of two common lock mould oil cylinders become one.
Sleeve of the present utility model can only be arranged on in the piston rod two of the piston rod one of circulation Mode-locking oil cylinder in two and two common lock mould oil cylinders any one or two or three.
Displacement transducer of the present utility model is a magnetic scale, on the piston rod corresponding two, offer centre bore with the common lock mould oil cylinder, the magnet ring of displacement transducer is arranged on piston rod two centre bore apertures, measuring staff is arranged on the oil cylinder end face of common lock mould oil cylinder oil back chamber, and it can stretch in the centre bore of piston rod two.
By above technical scheme as can be known, the utility model has compared with prior art saved mould shifting oil cylinder in the pull bar, simple in structure, convenient processing and manufacture, and cost is low, and its strength and stiffness can effectively be guaranteed; Four vertical compression type mould-locking oil cylinders only have two to be the internal-circulation type oil cylinder, have avoided interior four Mode-locking oil cylinders of circulation two-plate type mould clamping mechanism of existing vertical compression type to be the shortcoming of interior circulating oil cylinder entirely, and processing and manufacturing is simple; On pull bar, set up sleeve, solved the particular kind of relationship that requires Mode-locking oil cylinder piston both sides effective area to satisfy for circulation in satisfying, significantly improve design flexibility; The Mode-locking oil cylinder piston effective area is constant to be required under the identical situation with the design clamp force, and cylinder diameter rated operating pressure littler or hydraulic pump is lower; Four vertical compression type mould-locking oil cylinders are single-piston-rod hydraulic cylinder, because piston rod and pull bar unite two into one, have reduced the length of pull bar, and cost is lower, and the clamping size is reduced; Common lock mould oil cylinder oil return side directly communicates with atmosphere, has reduced the consumption of hydraulic oil; Adopt contactless magnetic scale as displacement transducer, the precision height, stable and reliable for performance.
Description of drawings
Fig. 1 is an isometric replaceable four-cylinder line-lock two-plate type clamping schematic diagram.
Fig. 2 is first derivative strucure schematic diagram of isometric replaceable four-cylinder line-lock two-plate type clamping.
Fig. 3 is first derivative strucure schematic diagram of isometric replaceable four-cylinder line-lock two-plate type clamping.
Among the figure: 1-moving platen, 2-pull bar, 3-sleeve, 4-piston rod one, 5-solid plate, 6-oil-in, circulation Mode-locking oil cylinder locked mode chamber in the 7-, 8-spacing one, 9-guiding valve, 10-piston one, circulation Mode-locking oil cylinder in the 11-cylinder body one, 12-, the 13-passage, 14-common lock mould oil cylinder, 15-sleeve end face, 16-guiding valve end face, 17-common lock mould oil cylinder locked mode chamber, circulation Mode-locking oil cylinder oil back chamber in the 18-piston two, 19-, the 20-magnet ring, 21-common lock mould oil cylinder oil back chamber, 22-displacement transducer, 23-air duct, 24-cylinder body two, the 25-measuring staff; The 26-piston end surface, 27-mould shifting oil cylinder cylinder body, 28-centre bore, 29-spacing two, 30-mould shifting oil cylinder, 31-piston rod two, 32-mould shifting oil cylinder piston rod, 33-mode transfer device, 34-liftout attachment, 35-piston rod thickened portion
The specific embodiment
As shown in Figure 1; a kind of isometric replaceable four-cylinder line-lock two-plate type clamping of the utility model mainly is made up of moving platen 1, solid plate 5, pull bar 2, mode transfer device 33, liftout attachment 34, mould shifting oil cylinder 30, interior circulation Mode-locking oil cylinder 12, common lock mould oil cylinder 14 and displacement transducer 22.Mould shifting oil cylinder piston rod 32 is fixing with moving platen 1, and mould shifting oil cylinder cylinder body 27 is fixed on solid plate 5 peripheries; Interior circulation Mode-locking oil cylinder 12 is by forming for the piston rod 1 of one, sleeve 3, valve seat 9, piston 1 and cylinder body 1 with pull bar 2, and sleeve 3 is arranged on the piston rod 1, and sleeve end face 15 keeps spacing 1 with guiding valve end face 16; Common lock mould oil cylinder 14 is by forming for the piston rod 31 of one, sleeve 3, piston 2 18 and cylinder body 2 24 with pull bar 2, common lock mould oil cylinder oil back chamber 21 communicates with air by air duct 23, sleeve 3 is arranged on the piston rod 2 31, and sleeve end face 15 keeps spacing 2 29 with piston end surface 26; Interior circulation Mode-locking oil cylinder 12 has two respectively with common lock mould oil cylinder 14, and all is single-piston-rod hydraulic cylinder, and the diagonal angle symmetry is fixed on the solid plate 5; Interior circulation Mode-locking oil cylinder locked mode chamber 12 and common lock mould oil cylinder locked mode chamber 14 communicate by passage 13; Displacement transducer 22 is arranged on 21 li of common lock mould oil cylinder oil back chambers; Liftout attachment 34 is arranged on the moving platen 1 with mode transfer device 33.
During matched moulds, the left side oil-in oil-feed of mould shifting oil cylinder 30 drives moving platen 1 motion, the piston 1 of simultaneously interior circulation Mode-locking oil cylinder 12 and piston 2 18 accompany movements of common lock mould oil cylinder 14.In this process, the guiding valve 9 of interior circulation Mode-locking oil cylinder 12 is opened, and the hydraulic oil on piston one 10 right sides flow to the left side through the valve of opening.Because circulation Mode-locking oil cylinder locked mode chamber 7 Volume Changes and common lock mould oil cylinder locked mode chamber 17 Volume Changes sums in the Volume Changes of interior circulation Mode-locking oil cylinder oil back chamber 19 is equal to, and interior circulation Mode-locking oil cylinder locked mode chamber 7 and common lock mould oil cylinder locked mode chamber 17 communicate by passage, have therefore realized circulation in hydraulic oil completely.The die sinking process is just in time opposite therewith.In the folding mold process, magnet ring 20 by displacement transducer 22 and the relative motion between the measuring staff 25 realize the measurement of real-time displacement, move and relative position with control moving platen 1.During locked mode, the guiding valve 9 of interior circulation Mode-locking oil cylinder 12 cuts out, system is to oil-in 6 superchargings, because sleeve end face 15 keeps certain distance with piston end surface 26 or guiding valve end face 16, the lifting surface area of the piston 2 18 of the piston 1 of circulation Mode-locking oil cylinder 12 and common lock mould oil cylinder 14 remains unchanged in when making locked mode, under certain system pressure, realized specified clamp force.
Referring to Fig. 2, structure, operation principle and the effect of this embodiment and embodiment 1 are basic identical.Difference is, only is provided with sleeve 3 on two piston rods 1 at diagonal angle.Sleeve 3 also can only be arranged on in the piston rod 2 31 of the piston rod 1 of circulation Mode-locking oil cylinder 12 in two and two common lock mould oil cylinders 14 any one or three.Set two sleeves 3 can guarantee in the shifting formwork process, circulation Mode-locking oil cylinder locked mode chamber 7 Volume Changes and common lock mould oil cylinder locked mode chamber 17 Volume Changes sums in the Volume Changes of interior circulation Mode-locking oil cylinder oil back chamber 19 is equal to.
Referring to Fig. 3, structure, operation principle and the effect of this embodiment and embodiment 1 are basic identical.Difference is, sleeve 3 and piston rod 1 be one with piston rod 2 31, promptly on piston rod 1 and piston rod 2 31 place of installing sleeve 3 with its overstriking.Piston rod thickened portion 35 can guarantee in the shifting formwork process that circulation Mode-locking oil cylinder locked mode 7 cavity volume changed and common lock mould oil cylinder locked mode chamber 17 Volume Changes sums in the Volume Changes of interior circulation Mode-locking oil cylinder oil back chamber 19 was equal to.
Claims (4)
1, a kind of isometric replaceable four-cylinder line-lock two-plate type clamping, mainly form by moving platen, solid plate, pull bar, mode transfer device, liftout attachment, mould shifting oil cylinder, interior circulation Mode-locking oil cylinder, common lock mould oil cylinder and displacement transducer, it is characterized in that: mould shifting oil cylinder piston rod and moving platen are fixed, and the mould shifting oil cylinder cylinder body is fixed on the solid plate periphery; Interior circulation Mode-locking oil cylinder by with pull bar be that piston rod, sleeve, valve seat, piston and the cylinder body of one formed, sleeve is arranged on the piston rod, its end face and guiding valve end face keep certain distance; The common lock mould oil cylinder by with pull bar be that piston rod, sleeve, piston and the cylinder body of one formed, its oil back chamber communicates with air, sleeve is arranged on the piston rod, its end face and piston end surface keep certain distance; Interior circulation Mode-locking oil cylinder and common lock mould oil cylinder have two respectively, and all are single-piston-rod hydraulic cylinder, and the diagonal angle symmetry is fixed on the solid plate; Interior circulation Mode-locking oil cylinder locked mode chamber and common lock mould oil cylinder locked mode chamber communicate by passage; Displacement transducer is arranged in the oil back chamber of common lock mould oil cylinder; Ejecting mechanism and mode transfer device are arranged on the moving platen.
2, a kind of isometric replaceable four-cylinder line-lock two-plate type clamping according to claim 1 is characterized in that described sleeve can only be arranged on any one or two or three piston rods in circulation Mode-locking oil cylinder in two and two the common lock mould oil cylinders.
3, a kind of isometric replaceable four-cylinder line-lock two-plate type clamping according to claim 1, it is characterized in that described sleeve can with two in the piston rod of circulation Mode-locking oil cylinder and two common lock mould oil cylinders become one.
4, a kind of isometric replaceable four-cylinder line-lock two-plate type clamping according to claim 1; it is characterized in that displacement transducer is a magnetic scale; on the piston rod corresponding, offer centre bore with the common lock mould oil cylinder; the magnet ring of displacement transducer is arranged on piston rod centre bore aperture; measuring staff is arranged on the oil cylinder end face of common lock mould oil cylinder oil back chamber, and it can stretch in the centre bore of piston rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201094706U CN201427370Y (en) | 2009-06-26 | 2009-06-26 | Four-cylinder actuated-locking double-plate mold clamping mechanism with isometric displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201094706U CN201427370Y (en) | 2009-06-26 | 2009-06-26 | Four-cylinder actuated-locking double-plate mold clamping mechanism with isometric displacement |
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| Publication Number | Publication Date |
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| CN201427370Y true CN201427370Y (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201094706U Expired - Fee Related CN201427370Y (en) | 2009-06-26 | 2009-06-26 | Four-cylinder actuated-locking double-plate mold clamping mechanism with isometric displacement |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927539A (en) * | 2009-06-26 | 2010-12-29 | 北京化工大学 | Isometric replaceable four-cylinder line-lock two-plate type mould clamping mechanism |
| CN102049491A (en) * | 2010-11-23 | 2011-05-11 | 苏州三基铸造装备股份有限公司 | Force expansion type dual-template mould clamping mechanism using four boosting cylinders |
| CN115923025A (en) * | 2022-12-09 | 2023-04-07 | 宁波斗士油压有限公司 | Super-long hot plate silica gel propeller equipment |
-
2009
- 2009-06-26 CN CN2009201094706U patent/CN201427370Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927539A (en) * | 2009-06-26 | 2010-12-29 | 北京化工大学 | Isometric replaceable four-cylinder line-lock two-plate type mould clamping mechanism |
| CN101927539B (en) * | 2009-06-26 | 2014-05-14 | 北京化工大学 | Isometric replaceable four-cylinder line-lock two-plate type mould clamping mechanism |
| CN102049491A (en) * | 2010-11-23 | 2011-05-11 | 苏州三基铸造装备股份有限公司 | Force expansion type dual-template mould clamping mechanism using four boosting cylinders |
| CN102049491B (en) * | 2010-11-23 | 2013-01-02 | 苏州三基铸造装备股份有限公司 | Force expansion type dual-template mould clamping mechanism using four boosting cylinders |
| CN115923025A (en) * | 2022-12-09 | 2023-04-07 | 宁波斗士油压有限公司 | Super-long hot plate silica gel propeller equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100324 Termination date: 20120626 |