CN103742480B - Jet forming machine and Mode-locking oil cylinder thereof - Google Patents
Jet forming machine and Mode-locking oil cylinder thereof Download PDFInfo
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- CN103742480B CN103742480B CN201410037406.7A CN201410037406A CN103742480B CN 103742480 B CN103742480 B CN 103742480B CN 201410037406 A CN201410037406 A CN 201410037406A CN 103742480 B CN103742480 B CN 103742480B
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Abstract
A kind of Jet forming machine and Mode-locking oil cylinder thereof, described Mode-locking oil cylinder comprises cylinder barrel, is divided into protecgulum and the bonnet of cylinder barrel front and back end and is positioned in cylinder barrel and the piston mechanism stretching out from protecgulum, is respectively equipped with front hydraulic fluid port and rear hydraulic fluid port with cylinder barrel internal communication on protecgulum and bonnet; Described piston mechanism comprises piston rod, adjusting nut, adjusting screw(rod), guide piston, regulating handle and driving member; Piston rod comprises bar main body and plug main body, and bar main body is stretched out from protecgulum, and piston rod is provided with step through-hole; Adjusting nut is fixedly installed in piston rod, and adjusting screw(rod) is bolted in adjusting nut and stretches in the through hole of piston rod; Guide piston fixed cover is located on adjusting screw(rod); Regulating handle is arranged in adjusting screw(rod), and drives adjusting screw(rod) to rotate by driving member, and driving member is fixedly connected with adjusting screw(rod), and driving member can slide along regulating handle length direction. Stroke of the present invention can steplessly be adjusted, and oil cylinder entire length is little.
Description
Technical field
The present invention relates to former, relate in particular to a kind of Jet forming machine and Mode-locking oil cylinder thereof.
Background technology
Accompanying drawing 1 shows a kind of ordinary construction hydraulic lock of prior art mould oil cylinder, it mainly forms cylinder body by protecgulum 2a, bonnet 3a and cylinder barrel 1a, piston rod 4a and the piston 5a being arranged on piston rod 4a form piston mechanism, and piston 5a adaptation is placed in cylinder barrel 1a, and piston rod 4a front end stretches out protecgulum 2a. This cylinder structure is simple, low cost of manufacture, and its shortcoming is: 1, stroke cannot regulate, and can not be applicable to the occasion that stroke often must regulate; 2, nothing buffering before and after piston, can clash into oil cylinder cover when piston speed is fast, produces noise and damage; 3, not environmental protection, to the greasy dirt non-processor of oozing out with piston rod in long-term use.
Accompanying drawing 2 shows a kind of hydraulic lock mould oil cylinder with buffer structure in prior art, its basic comprising is identical with Fig. 1 structure, comprise protecgulum 2b, bonnet 3b, cylinder barrel 1b, piston rod 4b and piston 5b, but its piston 5b two ends are provided with buffer plunger 51b, there is fixing buffering. This cylinder structure is also simpler, and its shortcoming is: 1, stroke cannot regulate; 2, buffer level cannot regulate, and is only applicable to the clear occasion of operating condition, and buffering effect depends on the machining accuracy of buffer plunger completely, and the deviation of 0.01mm all will affect its buffering effect; 3, without quick startability; 4, not environmental protection, to the greasy dirt non-processor of oozing out with piston rod in long-term use.
Accompanying drawing 3 shows can the adjustable hydraulic lock mould oil cylinder of a kind of buffer level (referring to 226 pages, " mechanical design handbook " third edition Volume Four (Chemical Industry Press) the 19th chapter " permanent orifice size buffer unit " a figure), its primary structure still comprises protecgulum 2c, bonnet 3c, cylinder barrel 1c, piston rod 4c and piston 5c, piston 5c two ends are provided with buffer plunger 51c, protecgulum 2c is provided with the front choke valve 61c of front throttle orifice 21c and correspondence and cushions coordinate realization with the buffer plunger 51c of piston 5c front end before, bonnet 3c is provided with the rear choke valve 62c of rear throttle orifice 31c and correspondence and cushions coordinate realization with the buffer plunger 51c of piston 5c rear end after, by front choke valve 61c and rear choke valve 62c, buffer level is regulated, in addition, on bonnet 3c, be also provided with quick startup oilhole 32c and corresponding check valve 7c and realize quick startup. this cylinder buffer degree is adjustable, has quick startability, and its shortcoming is: 1, stroke cannot regulate, 2, first-level buffer poor effect, because sort buffer design feature is: it is very large just to have started buffer-braking power, then declines soon, finally inoperative, 3, not environmental protection, to the greasy dirt non-processor of oozing out with piston rod in long-term use.
Accompanying drawing 4 has been illustrated a kind of hydraulic lock mould oil cylinder of existing stroke adjustable structure, it still comprises the structures such as protecgulum 2d, bonnet 3d, cylinder barrel 1d, piston rod 4d and piston 5d, it is provided with an abutment sleeve 6d as piston rear end stroke stop point in cylinder barrel 1d in piston 5d rear end, abutment sleeve 6d can drive the position being adjusted in cylinder barrel 1d by drive screw 7d and handwheel 8d, thereby the stroke of piston 5d is regulated. In abutment sleeve 5d, arrange space washer 9d coordinates realization with the buffer plunger 51d of piston 5d rear end after and cushion. The stroke of this oil cylinder can regulate, and all there is buffering front and back, and its shortcoming is: the abutment sleeve of 1, realizing stroke adjustment has occupied oil cylinder LAP, and therefore whole oil cylinder length is very long; 2, because oil cylinder length is very long, use protecgulum that oil cylinder while fixing is installed and rock greatly, fragile; 3, rear buffering coordinates realization by the space washer in abutment sleeve with the buffer plunger of piston, due to the structural limitations of abutment sleeve, buffer level cannot regulate and be only applicable to the clear occasion of operating condition, and buffering effect depends on the machining accuracy of buffer plunger completely, the deviation of 0.01mm all will affect its buffering effect; 4, complex structure, parts are many, install and keep in repair to be difficult for; 5, not environmental protection, to the greasy dirt non-processor of oozing out with piston rod in long-term use.
Eject and return although the hydraulic jack of above four kinds of different structures can reach, can realize the function of basic unlocking mold, meet the requirement of different operating modes, on Jet forming machine clamping mechanism, use and still have deficiency, be necessary to make improvement.
Summary of the invention
The present invention proposes a kind of Mode-locking oil cylinder, and its technical problem mainly solving is the stroke capable of regulating that makes Mode-locking oil cylinder, and oil cylinder length is little.
Further, the present invention also solves and makes Mode-locking oil cylinder under any stroke, all have buffering and the adjustable problem of buffer level.
In addition, the present invention also further solves the problem of not environmental protection of existing Mode-locking oil cylinder.
The technical scheme that the present invention adopts is: a kind of Mode-locking oil cylinder, comprise cylinder barrel, be located at the protecgulum of cylinder barrel front end, the piston mechanism of being located at the bonnet of cylinder barrel rear end and being positioned in cylinder barrel and stretching out from protecgulum, described protecgulum is provided with the front hydraulic fluid port with cylinder barrel internal communication, and bonnet is provided with the rear hydraulic fluid port with cylinder barrel internal communication; Described piston mechanism comprises piston rod, adjusting nut, adjusting screw(rod), guide piston, regulating handle and driving member; Piston rod comprises bar main body and is positioned at the plug main body of bar body rear, extend the through hole that is provided with a step in from described plug body rear towards described bar main body in described piston rod, this through hole comprises the less second-order through hole in cross section that is positioned at the first larger rank through hole of the cross section of rear side and is positioned at front side; In described plug main body profile and described cylinder barrel, cross section is suitable, and described bar body front end is stretched out from described protecgulum; Adjusting nut has internal thread hole, be fixedly installed in described the first rank through hole, and internal thread hole communicates with described second-order through hole; Adjusting screw(rod) inner hollow, it is provided with external thread section; Described external thread section and described internal thread hole adaptation are spirally connected and stretch in described second-order through hole; Guide piston fixed cover is located on described adjusting screw(rod) and is close to described external thread section rear end, cross section adaptation in guide piston profile and described cylinder barrel; Regulating handle is rod shaped structure, which is provided with first auxiliary section of extending along its length; Described regulating handle is arranged in described adjusting screw(rod), and stretch out from described bonnet regulating handle rear end; Driving member is provided with the second auxiliary section; Driving member is arranged between described adjusting screw(rod) and described regulating handle, driving member is fixedly connected with described adjusting screw(rod), described the second auxiliary section makes regulating handle in the time rotating, can drive adjusting screw(rod) to rotate with adaptive connection of described the first auxiliary section, and can slide along the first auxiliary section length direction in the second auxiliary section.
According to a modified embodiment of the present invention, described adjusting screw(rod) rear end is provided with a rear buffer part, and described rear buffer locations is in described guide piston rear side; In described bonnet, be also provided with can the one-level of adaptive accommodating described rear buffer part after cushion hole after cushion hole and secondary, after described one-level cushion hole from described bonnet front bulkhead extend to described the aft bulkhead of hydraulic fluid port, after described secondary, cushion hole is positioned at the rear side of described rear hydraulic fluid port and is communicated with cushion hole after described one-level; In described bonnet, be also provided with one and can be communicated with throttle orifice after the secondary that throttle orifice and after the inner one-level with cushion hole after described secondary of described cylinder barrel can be communicated with cushion hole and described rear hydraulic fluid port after described secondary; After described one-level, throttle orifice is provided with choke valve after the one-level of a controllable channel size to the passage of cushion hole after described secondary, and after described secondary, throttle orifice is provided with choke valve after the secondary of a controllable channel size to the passage of described rear hydraulic fluid port.
According to a modified embodiment of the present invention, described plug body front end is provided with a front buffer part; Described protecgulum inwall is provided with front cushion hole that can adaptive accommodating described front buffer part, is also provided with one and can be communicated with the inner front throttle orifice with described front hydraulic fluid port of described cylinder barrel on protecgulum; Passage in described front throttle orifice to described front hydraulic fluid port is provided with the front choke valve of a controllable channel size.
According to a modified embodiment of the present invention, in described bonnet, be also provided with one and can be communicated with the second rear fast startup oilhole that described rear hydraulic fluid port and the first rear fast startup oilhole and of cushion hole after described secondary can be communicated with described rear hydraulic fluid port and described cylinder barrel inside; Be provided with the first rear check valve to cushion hole one-way conduction after secondary of hydraulic fluid port after a permission in described the first rear fast startup oilhole place, be provided with a permission in described the second rear fast startup oilhole place after hydraulic fluid port to the second rear check valve of the inner one-way conduction of cylinder barrel.
According to a modified embodiment of the present invention, in described protecgulum, be also provided with a front fast startup oilhole that can be communicated with described front hydraulic fluid port and described cylinder barrel inside; Before described front fast startup oilhole place is also provided with a permission, hydraulic fluid port is to the front check valve of the inner one-way conduction of cylinder barrel.
According to a modified embodiment of the present invention, described bonnet place is also provided with to collect the rear recovery oil circuit of described the first rear check valve and described the second rear check valve leakage of oil, described protecgulum place is also provided with to collect the front recovery oil circuit of described front check valve leakage of oil, described front recovery oil circuit connects described rear recovery oil circuit by an oil pipe, and described rear recovery oil circuit can be communicated with external fuel tank.
According to a modified embodiment of the present invention, between described protecgulum and described piston rod, be provided with oil sealing and being covered with dust, oil sealing and be covered with dust and be all positioned at the front side of described front hydraulic fluid port, and be covered with dust and be positioned at the front side of oil sealing; In described protecgulum, offer a leakage of oil feeder in oil sealing with between being covered with dust, protecgulum front bulkhead is provided with a collection interface communicating with described leakage of oil feeder.
According to a modified embodiment of the present invention, described the first auxiliary section is keyway; Described driving member comprises a copper sheathing and a driving key, and copper sheathing and driving key are one-body molded, and driving key is positioned at copper sheathing inside, and described driving key is installed in described the first auxiliary section as described the second auxiliary section adaptation.
According to a modified embodiment of the present invention, described driving member and described adjusting screw(rod) interference fit are installed, in described adjusting screw(rod) in driving member rear side be provided with one can backstop driving member back-up ring, in adjusting screw(rod), be provided with one without lubricating cup scholar in driving member front side, described without lubricating cup scholar and described regulating handle sliding connection.
Another technical solution used in the present invention is to provide a kind of Jet forming machine, comprises Mode-locking oil cylinder as above.
Compared with prior art, the present invention has following beneficial effect.
1, Mode-locking oil cylinder of the present invention can carry out step-less adjustment to piston stroke by the cooperation of each structure in piston mechanism, can, according to different die adjustment oil cylinder strokes, reach best opening stroke, shortens the die sinking time, makes die sinking final position accurate stable; Stroke adjustment does not take oil cylinder extra length substantially, and oil cylinder entire length is suitable with common oil cylinder length, and compared with close function oil cylinder, it is short more than 30% that length is wanted, and uses protecgulum to install and can reach solid and reliable effect, and oil cylinder entirety takes up room little.
2, the present invention is also provided with adjustable buffer structure in oil cylinder front and back end further, and particularly rear end buffering is also set to the adjustable buffering of two-stage, can be adjusted to best buffering effect by corresponding choke valve, reduces mechanical impact and the noise of oil cylinder. More preferably, also coordinate quick start-up performance, can shorten the unlocking mold time, be specially adapted to the requirement that unlocking mold need to open soon soon stop.
3, the present invention is also provided with leakage of oil at front end in addition and collects interface, the hydraulic oil of oil cylinder leakage in service can be collected and is reclaimed, and reaches the effect that environmental protection is produced.
Brief description of the drawings
Fig. 1 is the structural representation of a kind of Mode-locking oil cylinder of prior art.
Fig. 2 is the structural representation of the another kind of Mode-locking oil cylinder of prior art.
Fig. 3 is the structural representation of the third Mode-locking oil cylinder of prior art.
Fig. 4 is the structural representation of the 4th kind of Mode-locking oil cylinder of prior art.
Fig. 5 is the stereochemical structure partial sectional view of Mode-locking oil cylinder embodiment of the present invention.
Fig. 6 is the side direction structure cutaway view of Mode-locking oil cylinder embodiment of the present invention.
Schematic diagram when Fig. 7 is Mode-locking oil cylinder embodiment oil cylinder stroke maximum of the present invention.
Fig. 8 is the schematic diagram after Mode-locking oil cylinder embodiment oil cylinder stroke of the present invention is adjusted.
Fig. 9 is the structural representation of driving key copper sheathing in Mode-locking oil cylinder embodiment of the present invention.
Figure 10 is the schematic diagram that coordinates of adjusting screw(rod) and regulating handle in Mode-locking oil cylinder embodiment of the present invention.
Figure 11 cushions starting position schematic diagram after Mode-locking oil cylinder embodiment one-level of the present invention.
Figure 12 cushions starting position schematic diagram after Mode-locking oil cylinder embodiment secondary of the present invention.
Figure 13 is the schematic diagram of buffering end position before Mode-locking oil cylinder embodiment of the present invention.
Figure 14 is the structural representation that Mode-locking oil cylinder embodiment of the present invention realizes quick start-up performance.
Figure 15 is the local enlarged diagram in F place in Figure 14 of the present invention.
Figure 16 is the local enlarged diagram in G place in Figure 14 of the present invention.
Figure 17 is the local enlarged diagram in H place in Figure 14 of the present invention.
Figure 18 is the local enlarged diagram in D place in Fig. 8 of the present invention.
Wherein, taking Fig. 6 as reference, the A-A cross-sectional view that Fig. 7, Fig. 8 and Figure 12 are Fig. 6, the B-B cross-sectional view that Figure 11 and Figure 13 are Fig. 6, rotation diagram is analysed and observe in the C-C cross section that Figure 14 is Fig. 6.
Description of reference numerals is as follows: 1, cylinder barrel; 2, protecgulum; 201, front hydraulic fluid port; 202, the first groove; 203, front cushion hole; 204, front throttle orifice; 205, front fast startup oilhole; 206, leakage of oil feeder; 21, front pressuring plate; 211, front recovery oil circuit; 23, oil pipe; 3, bonnet; 301, rear hydraulic fluid port; 302, the second groove; 304, cushion hole after one-level; 305, cushion hole after secondary; 306, throttle orifice after one-level; 307, throttle orifice after secondary; 308, the first rear fast startup oilhole; 309, the second rear fast startup oilhole; 31, handle gland; 32, the first rear fender; 321, the first rear recovery oil circuit; 33, the second rear fender; 331, the second rear recovery oil circuit; 4, piston mechanism; 41, piston rod; 411, plug main body; 4111, the first rank through hole; 412, bar main body; 4121, second-order through hole; 413, front buffer part; 42, adjusting nut; 43, adjusting screw(rod); 431, external thread section; 432, rear buffer part; 44, guide piston; 441, conducting oilhole; 45, regulating handle; 451, keyway; 46, driving key copper sheathing; 461, copper sheathing; 462, driving key; 47, back-up ring; 48, without lubricating cup scholar; 51, choke valve after one-level; 52, choke valve after secondary; 53, front choke valve; 61, the first rear check valve; 62, the second rear check valve; 63, front check valve; 71, oil sealing; 72, be covered with dust; 81, collect interface; 9, pull bar.
Detailed description of the invention
In order to further illustrate principle of the present invention and structure, existing by reference to the accompanying drawings to a preferred embodiment of the present invention will be described in detail.
First it should be noted that, in the present invention, relate to the statement of front and back position all taking " protecgulum " direction as " front ", taking " bonnet " direction as after. In the view of the structure of prior art shown in Fig. 1 to Fig. 4, left is " front ", and right-hand is " afterwards ". Taking the view direction of the structure of the embodiment of the present invention shown in Fig. 7 to Figure 18 as with reference to, right-hand is " front ", left is " afterwards ".
Consult Fig. 5 to Fig. 8, the Mode-locking oil cylinder basic structure that the embodiment of the present invention provides comprises cylinder barrel 1, is located at the protecgulum 2 of cylinder barrel 1 front end, is located at the bonnet 3 of cylinder barrel 1 rear end and is positioned in cylinder barrel 1 and the piston mechanism 4 stretching out from protecgulum 2. Cylinder barrel 1, protecgulum 2 and bonnet 3 form the cylinder body of Mode-locking oil cylinder, between protecgulum 2 and bonnet 3, are also connected with pull bar 9. Protecgulum 2 upper surfaces are provided with the front hydraulic fluid port 201 with cylinder barrel 1 internal communication; bonnet 3 upper surfaces are provided with the rear hydraulic fluid port 301 with cylinder barrel 1 internal communication; when Mode-locking oil cylinder work; the hydraulic oil promotion piston mechanism 4 that is entered cylinder barrel 1 by front hydraulic fluid port 201 or rear hydraulic fluid port 301 moves along cylinder barrel 1 length, thereby reaches the object of die sinking or locked mode. The rear end face of protecgulum 2 is provided with the first groove 202, the front end face of bonnet 3 is provided with the second groove 302, the two ends of cylinder barrel 1 are placed in respectively in the first groove 202 and the second groove 302, in cylinder barrel 1, be loaded on two end cap, cylinder barrel 1 is positioned at cylinder barrel 1 lateral surface with the mating surface major part of two end cap, can reduce the leakage of cylinder barrel 1 interior hydraulic oil.
Continue to consult Fig. 5 to Fig. 8, piston mechanism 4 is the structure of an adjustable stroke, and it mainly comprises piston rod 41, adjusting nut 42, adjusting screw(rod) 43, guide piston 44, regulating handle 45 and driving key copper sheathing 46. Piston rod 41 is bar and the integrated structure of plug, there is bar main body 412 and the plug main body 411 that is positioned at bar main body 412 rear ends, piston rod 41 extends to bar main body 412 through hole that is provided with a step from plug main body 411 rear end faces, and this through hole comprises larger the first rank through hole 4111 and the less second-order through hole 4121 in cross section that is positioned at front side in cross section that is positioned at rear side; Wherein, the first rank through hole 4111 is roughly positioned at plug main body 411, and 4121 of second-order through holes are roughly positioned at bar main body 412, and second-order through hole 4121 can also be set to step according to demand; Plug main body 411 profiles and the interior cross section of cylinder barrel 1 are suitable, and bar main body 412 front ends stretch out from protecgulum 2. Adjusting nut 42, adjusting screw(rod) 43, guide piston 44, regulating handle 45, driving key copper sheathing 46 match and realize stroke adjustment with piston rod 41, below one by one specifically introduce.
Adjusting nut 42 has internal thread hole, is fixedly installed in the first rank through hole 4111 of piston rod 41, and the internal thread hole of adjusting nut 42 communicates with second-order through hole 4111. In order to prevent that adjusting nut 42 from getting loose from plug main body 411, can adopt junction of the edges of two sheets of paper screw that adjusting nut 42 is fixing with plug main body 411.
Adjusting screw(rod) 43 inner hollow, it is provided with external thread section 431, and external thread section 431 is spirally connected with the internal thread hole adaptation of adjusting nut 42, and external thread section 431 stretches in the second-order through hole 4121 of piston rod 41.
The profile of guide piston 44 and the interior cross section of cylinder barrel 1 adaptation, for guiding and location, which is provided with can conducting guide piston 44 front and back sides conducting oilhole 441, guide piston 44 fixed covers are located on adjusting screw(rod) 43 and are close to external thread section 431 rear ends.
Regulating handle 45 is rod shaped structure, which is provided with the keyway 451 extending along its length. Regulating handle 45 is arranged in adjusting screw(rod) 43, and regulating handle 45 front ends stretch in the second-order through hole 4121 of piston rod 41, and stretch out from bonnet 3 regulating handle 45 rear ends.
As shown in Figure 9, driving key copper sheathing 46 is a motion transmission part, and it is copper sheathing 461 and the integrated structure of driving key 462 in the present embodiment, and driving key 462 is positioned at copper sheathing 461 inside. Driving member copper sheathing 46 is fixedly installed in adjusting screw(rod) 43 inside and is socketed on regulating handle 45, driving key 462 is installed on regulating handle 45 in the keyway 451 as another auxiliary section as an auxiliary section adaptation, make regulating handle 45 can drive adjusting screw(rod) 43 to rotate in the time rotating, and driving key 461 can slide along keyway 451 length directions.
When this Mode-locking oil cylinder needs adjustment stroke, rotate regulating handle 45, regulating handle 45 drives the corresponding rotation of adjusting screw(rod) 43 by driving key copper sheathing 46, because adjusting screw(rod) 43 and adjusting nut 42 pass through screw-threaded engagement, rotatablely moving of adjusting screw(rod) 43 can be exchanged into the rectilinear motion of adjusting nut 42 along adjusting screw(rod) 43 length directions, piston rod 41 can move along adjusting screw(rod) 43 length directions like this, thereby has adjusted the spacing between guide piston 44 and plug main body 411. Guide piston 44 rear end faces are the rear stop of piston stroke while contact with bonnet 3, and plug main body 411 front end faces are the front stop of piston stroke while contact with protecgulum 2, regulate by the spacing between guide piston 44 and plug main body 411 stroke that has regulated piston. Fig. 7 and Fig. 8 are consulted in contrast, in Fig. 7, guide piston 44 is fitted substantially with plug main body 411, it is now the state of stroke Lmax maximum, and make between guide piston 44 and plug main body 411 to there is spacing by adjusting in Fig. 8, now stroke Lx length is compared the length that has just reduced this spacing in Fig. 7. Stretch out outside bonnet 3 regulating handle 45 rear ends, can conveniently carry out like this stroke adjustment, when adjusting to after the oil cylinder stroke needing, grub screw or other modes of 31 li, the handle gland by being fixed on bonnet 3 aft bulkhead places are locked regulating handle 45, have so fixed oil cylinder stroke.
In the time that needs carry out unlocking mold; hydraulic oil the past hydraulic fluid port 201 or rear hydraulic fluid port 301 enter cylinder barrel 1; promote piston rod 41 rectilinear motions; piston rod 41, adjusting nut 42, adjusting screw(rod) 43, guide piston 44 and driving key copper sheathing 46 move along regulating handle 45 length directions together, and driving key copper sheathing 46 does not rotate when the linear running with guaranteeing piston rod 41 coordinating of keyway 451 on regulating handle 45.
Cooperation by said structure in piston mechanism can be carried out step-less adjustment to piston stroke, can, according to different die adjustment oil cylinder strokes, reach best opening stroke, shortens the die sinking time, makes die sinking final position accurate stable; Stroke adjustment does not take oil cylinder extra length substantially, and oil cylinder entire length is suitable with common oil cylinder length, and compared with close function oil cylinder, it is short more than 30% that length is wanted, and uses protecgulum to install and can reach solid and reliable effect, and oil cylinder entirety takes up room little.
Consult Figure 10, driving key copper sheathing 46 can adopt super large interference fit to be installed in adjusting screw(rod) 43, guarantees that both can be synchronized with the movement; Further, in order to prevent that driving key copper sheathing 46 from deviating from, in adjusting screw(rod) 43 in driving key copper sheathing 46 rear sides be provided with one can backstop driving key copper sheathing 46 back-up ring 47. For reduce adjusting screw(rod) 43 in operation (while being rectilinear motion) with the friction of regulating handle 45, in adjusting screw(rod) 43, is provided with one without lubricating cup scholar 48 in driving key copper sheathing 46 front sides, this is slidably connected with regulating handle 45 precision-fit without lubricating cup scholar 48.
More than introduced the concrete structure of this Mode-locking oil cylinder stroke adjustment function, further, this Mode-locking oil cylinder also has adjustable degree buffering effect, is specifically described as follows.
Consult Figure 11 and Figure 12, in order to reach good buffering effect, oil cylinder rear end is provided with two-stage buffering, and split cavity effectively cushions. In the present embodiment, adjusting screw(rod) 43 rear ends are set to rear buffer part 432, and rear buffer part 432 is positioned at guide piston 44 rear sides. In bonnet 3 from front bulkhead backward end wall direction set gradually can be adaptive accommodating cushion hole 305 after cushion hole 304 and secondary after the one-level of buffer part 432, the aft bulkhead of buffer mouth 304 hydraulic fluid port 301 from bonnet 3 front bulkheads extend to after one-level, after secondary, cushion hole 305 is positioned at the rear side of rear hydraulic fluid port 301 and is communicated with cushion hole after one-level 304. In bonnet 3, be also provided with one and can be communicated with throttle orifice 307 after the secondary that throttle orifice 306 and after the inner one-level with cushion hole after secondary 305 of cylinder barrel 1 can be communicated with cushion hole 305 and rear hydraulic fluid port 301 after secondary, after one-level, throttle orifice 306 is provided with choke valve 51 after the one-level of a controllable channel size to the passage of cushion hole 305 after secondary, and after secondary, throttle orifice 307 is provided with choke valve 52 after the secondary of a controllable channel size to the passage of rear hydraulic fluid port 301.
In Figure 11 and Figure 12, hydraulic oil in the past hydraulic fluid port 201 enters the interior promotion piston rod 41 of cylinder barrel 1 to left movement, the rear buffer part 432 of adjusting screw(rod) 43 is cushion hole 305 and form two-stage buffering after cushion hole 304 and secondary after one-level successively, wherein first order cushion stroke is L1, and second level cushion stroke is L2. Figure 11 is the zero hour of first order buffering, now, rear buffer part 432 arrives the starting position of cushion hole 304 after one-level, the hydraulic oil in guide piston 44 left sides by rear buffer part 432 backstops cannot be directly after one-level cushion hole 304 from after hydraulic fluid port 301 discharge, hydraulic oil in cylinder barrel 1 will be after throttle orifice one-level 306 choke valve 51 after one-level enters secondary cushion hole 305, again from cushion hole secondary 305 interior after one-level the open rearward end of cushion hole 304 enter after one-level in cushion hole 304, finally discharge from rear hydraulic fluid port 301, hydraulic oil route is in Figure 11 shown in E1; Can regulate the effect of first-level buffer by choke valve 51 after regulating one-level. Figure 12 is the zero hour of second level buffering, now, rear buffer part 432 arrives the starting position of cushion hole 305 after secondary, hydraulic oil in level 2 buffering hole 305 cannot be again after one-level cushion hole 304 enter after hydraulic fluid port 301, and can only be after secondary after throttle orifice 307 and secondary choke valve 52 enter after hydraulic fluid port 301 discharge, hydraulic oil circuit is in Figure 12 shown in E2; Now, the hydraulic oil in cylinder barrel 1 discharge complete path for successively after one-level after throttle orifice 306, one-level after choke valve 51, secondary after cushion hole 305, secondary after throttle orifice 307, secondary choke valve 52 enter after hydraulic fluid port 301 discharge; Can regulate level 2 buffering effect by choke valve 52 after choke valve 51 and/or secondary after adjusting one-level.
In addition, consult Figure 13, in the present embodiment, the front end of Mode-locking oil cylinder is also provided with buffer structure. Plug main body 411 front ends are provided with a front buffer part 413, and the cross section of this front buffer part 413 is less than the cross section of filling in main body 411. Protecgulum 2 inwalls (being aft bulkhead) are provided with front cushion hole 203 that can adaptive accommodating front buffer part 413. On protecgulum 2, be also provided with one and can be communicated with the inner front throttle orifice 204 with front hydraulic fluid port 201 of cylinder barrel 1, be provided with the front choke valve 53 of a controllable channel size in front throttle orifice 204 to the passage of front hydraulic fluid port 201. Hydraulic oil enters in cylinder barrel 1 from rear hydraulic fluid port 301, promotes piston rod 41 and moves right, and the premenstrual cushion hole 203 of hydraulic oil on plug main body 411 right sides enters front hydraulic fluid port 201 and discharges; After when current buffer part 203 enters front cushion hole 203, start buffering, hydraulic oil cannot be entered front cushion hole 203 again by front buffer part 413 backstops, and can only premenstrual throttle orifice 204 and front choke valve 53 enter front hydraulic fluid port 201 and discharge, hydraulic oil route is as shown in E3 in Figure 13. By regulating front choke valve 53 to regulate buffering effect.
By the setting of the adjustable buffer structure in front and back, particularly buffering is also provided with two-stage buffering afterwards, can be adjusted to best buffering effect by corresponding choke valve, has reduced mechanical impact and the noise of oil cylinder.
Further, in a preferred embodiment, when buffering effect can be realized, also can realize quick start-up performance. Consult Figure 14, in bonnet 3, be also provided with one and can be communicated with the second rear fast startup oilhole 309 that rear hydraulic fluid port 301 and the first rear fast startup oilhole 308 and of cushion hole after secondary 305 can be communicated with rear hydraulic fluid port 301 and cylinder barrel 1 inside; Be provided with the first rear check valve 61 to cushion hole 305 one-way conductions after secondary of hydraulic fluid port 301 after a permission in the first rear fast startup oilhole 308 places, be provided with a permission in the second rear fast startup oilhole 309 places after hydraulic fluid port 301 to the second rear check valve 62 of cylinder barrel 1 inner one-way conduction. In the time that piston rod 41 need to eject (moving right) fast, hydraulic oil enters from rear hydraulic fluid port 301, after first, the fast oilhole 308 that starts enters cushion hole 305 after secondary, the rear buffer part 432 of adjusting screw(rod) 43 is formed to the thrust moving right, and the route of this part of hydraulic oil is as shown in Q1 in Figure 14; In addition, hydraulic oil also can start soon oilhole 309 after entering from rear hydraulic fluid port 301 and enter cylinder barrel 1 inside after second, promoting guide piston 44 moves to right, part hydraulic oil also can flow to the right and act in plug main body 411 by the conducting oilhole 441 from guide piston 44, and the route of this part of hydraulic oil is as shown in Q2 in Figure 14. Hydraulic oil in flow process after first after check valve 61 or the second check valve 62 piston rod 41 is promoted, because the circulating face of check valve is larger than the circulating face at choke valve place, so can realize the quick startup that piston rod 41 ejects. And due to the one-way conduction effect of rear check valve 61,62, in rear buffering course (process shown in Figure 11 and Figure 12), hydraulic oil not can through after check valve place backward hydraulic fluid port flow out.
Similarly, Mode-locking oil cylinder front end also can arrange quick startup structure and realize returning fast of piston rod. Still consult Figure 14, be provided with a front fast startup oilhole 205 that can be communicated with front hydraulic fluid port 201 and cylinder barrel 1 inside in protecgulum 2, before these front fast startup oilhole 205 places are provided with a permission, hydraulic fluid port 201 is to the front check valve 63 of cylinder barrel 1 inner one-way conduction. In the time that piston rod 41 need to be return (being moved to the left) fast, hydraulic oil in the past hydraulic fluid port 201 enters, and premenstrual fast startup oilhole 205 enters cylinder barrel 1 inside, promotes piston rod 41 and is moved to the left, and the route of this process hydraulic oil is as shown in Q3 in Figure 14. Because the circulating face of check valve is larger than the circulating face at choke valve place, can realize the quick startup that piston rod 41 is return; Equally because of the one-way conduction effect of front check valve 63, in front buffering course (process shown in Figure 13), hydraulic oil can premenstrual check valve 63 places forward hydraulic fluid port 201 flow out.
By the structure of quick startup is set at protecgulum 2 and bonnet 3, can shorten the unlocking mold time, be specially adapted to the requirement that unlocking mold need to open soon soon stop. And start in conjunction with adjustable buffering fast, can in opening soon soon stopping, can not cause excessive mechanical shock to oil cylinder again.
On the basis of Figure 14, consult in the lump shown in Figure 15 and Figure 16, bonnet 3 places are also provided with to collect the rear recovery oil circuit of the first rear check valve 61 and the second rear check valve 62 leakage of oils, first consult Figure 15, the first rear check valve 61 is installed in bonnet 3 by the first rear fender 32 sealings, thereby on the first rear fender 32 and bonnet 3, be respectively equipped with through hole and form the first rear recovery oil circuit 321 that is communicated with the first rear check valve 61 ends and the external world, this first rear recovery oil circuit 321 is also communicated with external fuel tank, and the route that leakage of oil is reclaimed is as shown in M in Figure 15. Consult Figure 16, the second rear check valve 62 is installed in bonnet 3 by the second rear fender 33 sealings, is provided with the through hole being communicated with the second rear check valve 62 ends as the second rear recovery oil circuit 331 in the second rear fender 33. Again in conjunction with Figure 14 and Figure 17, protecgulum 2 places are also provided with to collect the front recovery oil circuit 211 of front check valve 63 leakage of oils, wherein, front check valve 63 is installed in protecgulum 2 by front pressuring plate 21 sealings, the through hole being communicated with is set as front recovery oil circuit 211 with front check valve 63 ends on front pressuring plate 21. Front recovery oil circuit 211 is connected to the second rear recovery oil circuit 331 by an oil pipe 23, the leakage of oil meeting at front check valve 63 and the second rear check valve 62 places converges with the leakage of oil at the first front check valve 61 places, last cocurrent flow oil return case, not only environmental protection but also succinct, avoids the waste of hydraulic oil.
In protecgulum 2, the installation axis of front choke valve 53 and front check valve 63 roughly with the axis of front hydraulic fluid port 201 in a perpendicular, certainly the perpendicular at three's axis place also can have an interval. In the present embodiment, front choke valve 53 is parallel with the axis of front check valve 63, and both are installed on respectively the two opposite side walls of protecgulum 2, and both axis are vertical with the axis of front hydraulic fluid port 201. In other embodiments, can also there is other set-up mode.
In bonnet 3, after one-level, choke valve 51 and the second rear check valve 62 are installed on respectively in the two opposite side walls perpendicular with rear hydraulic fluid port 301 place walls, after secondary, 52, choke valve is installed on the sidewall relative with rear hydraulic fluid port 301 place walls, and the first rear check valve 61 is installed in the aft bulkhead of bonnet 3. In other embodiments, can also have other set-up mode, and each choke valve and check valve the corresponding passage of controlling and carry out adaptive adjustment.
Preferably, consult Figure 18, be provided with oil sealing 71 and be covered with dust 72 between protecgulum 2 and piston rod 41, oil sealing 71 and 72 front sides that are all positioned at front hydraulic fluid port 201 that are covered with dust, play respectively the effect of oil-leakage-prevention and dust protection, and 72 front sides that are positioned at oil sealing 71 are covered with dust. In protecgulum 2, in oil sealing 71 be covered with dust and also offer a leakage of oil feeder 206 between 72, protecgulum 2 front bulkheads are provided with a collection interface 81 communicating with leakage of oil feeder 206. Can carry out collection and treatment for the greasy dirt oozing out outside oil sealing 71 with piston rod 41 in long-term use, outside greasy dirt can not continue to ooze out again and is covered with dust, reach the effect that environmental protection is produced.
These are only better possible embodiments of the present invention, not limit the scope of the invention, the equivalent structure that all utilizations description of the present invention and accompanying drawing content have been done changes, and is all included in protection scope of the present invention.
Claims (10)
1. a Mode-locking oil cylinder, comprise cylinder barrel, be located at the protecgulum of cylinder barrel front end, the piston mechanism of being located at the bonnet of cylinder barrel rear end and being positioned in cylinder barrel and stretching out from protecgulum, described protecgulum is provided with the front hydraulic fluid port with cylinder barrel internal communication, and bonnet is provided with the rear hydraulic fluid port with cylinder barrel internal communication; It is characterized in that, described piston mechanism comprises:
Piston rod, comprise bar main body and the plug main body that is positioned at bar body rear, extend the through hole that is provided with a step in from described plug body rear towards described bar main body in described piston rod, this through hole comprises the less second-order through hole in cross section that is positioned at the first larger rank through hole of the cross section of rear side and is positioned at front side; In described plug main body profile and described cylinder barrel, cross section is suitable, and described bar body front end is stretched out from described protecgulum;
Adjusting nut, it has internal thread hole; Adjusting nut is fixedly installed in described the first rank through hole, and internal thread hole communicates with described second-order through hole;
Adjusting screw(rod), its inner hollow, it is provided with external thread section; Described external thread section and described internal thread hole adaptation are spirally connected and stretch in described second-order through hole;
Guide piston, fixed cover is located on described adjusting screw(rod) and is close to described external thread section rear end, cross section adaptation in guide piston profile and described cylinder barrel;
Regulating handle, it is rod shaped structure, which is provided with first auxiliary section of extending along its length; Described regulating handle is arranged in described adjusting screw(rod), and stretch out from described bonnet regulating handle rear end;
Driving member, which is provided with the second auxiliary section; Driving member is arranged between described adjusting screw(rod) and described regulating handle, driving member is fixedly connected with described adjusting screw(rod), described the second auxiliary section makes regulating handle in the time rotating, can drive adjusting screw(rod) to rotate with adaptive connection of described the first auxiliary section, and can slide along the first auxiliary section length direction in the second auxiliary section.
2. Mode-locking oil cylinder according to claim 1, is characterized in that: described adjusting screw(rod) rear end is provided with a rear buffer part, and described rear buffer locations is in described guide piston rear side; In described bonnet, be also provided with can the one-level of adaptive accommodating described rear buffer part after cushion hole after cushion hole and secondary, after described one-level cushion hole from described bonnet front bulkhead extend to described the aft bulkhead of hydraulic fluid port, after described secondary, cushion hole is positioned at the rear side of described rear hydraulic fluid port and is communicated with cushion hole after described one-level; In described bonnet, be also provided with one and can be communicated with throttle orifice after the secondary that throttle orifice and after the inner one-level with cushion hole after described secondary of described cylinder barrel can be communicated with cushion hole and described rear hydraulic fluid port after described secondary; After described one-level, throttle orifice is provided with choke valve after the one-level of a controllable channel size to the passage of cushion hole after described secondary, and after described secondary, throttle orifice is provided with choke valve after the secondary of a controllable channel size to the passage of described rear hydraulic fluid port.
3. Mode-locking oil cylinder according to claim 2, is characterized in that: described plug body front end is provided with a front buffer part; Described protecgulum inwall is provided with front cushion hole that can adaptive accommodating described front buffer part, is also provided with one and can be communicated with the inner front throttle orifice with described front hydraulic fluid port of described cylinder barrel on protecgulum; Passage in described front throttle orifice to described front hydraulic fluid port is provided with the front choke valve of a controllable channel size.
4. Mode-locking oil cylinder according to claim 2, is characterized in that: in described bonnet, be also provided with one and can be communicated with the second rear fast startup oilhole that described rear hydraulic fluid port and the first rear fast startup oilhole and of cushion hole after described secondary can be communicated with described rear hydraulic fluid port and described cylinder barrel inside; Be provided with the first rear check valve to cushion hole one-way conduction after secondary of hydraulic fluid port after a permission in described the first rear fast startup oilhole place, be provided with a permission in described the second rear fast startup oilhole place after hydraulic fluid port to the second rear check valve of the inner one-way conduction of cylinder barrel.
5. Mode-locking oil cylinder according to claim 4, is characterized in that: in described protecgulum, be also provided with a front fast startup oilhole that can be communicated with described front hydraulic fluid port and described cylinder barrel inside; Before described front fast startup oilhole place is also provided with a permission, hydraulic fluid port is to the front check valve of the inner one-way conduction of cylinder barrel.
6. Mode-locking oil cylinder according to claim 5, it is characterized in that: described bonnet place is also provided with to collect the rear recovery oil circuit of described the first rear check valve and described the second rear check valve leakage of oil, described protecgulum place is also provided with to collect the front recovery oil circuit of described front check valve leakage of oil, described front recovery oil circuit connects described rear recovery oil circuit by an oil pipe, and described rear recovery oil circuit can be communicated with external fuel tank.
7. according to the Mode-locking oil cylinder described in claim 1-6 any one, it is characterized in that: between described protecgulum and described piston rod, be provided with oil sealing and being covered with dust, oil sealing and be covered with dust and be all positioned at the front side of described front hydraulic fluid port, and be covered with dust and be positioned at the front side of oil sealing; In described protecgulum, offer a leakage of oil feeder in oil sealing with between being covered with dust, protecgulum front bulkhead is provided with a collection interface communicating with described leakage of oil feeder.
8. according to the Mode-locking oil cylinder described in claim 1-6 any one, it is characterized in that: described the first auxiliary section is keyway; Described driving member comprises a copper sheathing and a driving key, and copper sheathing and driving key are one-body molded, and driving key is positioned at copper sheathing inside, and described driving key is installed in described the first auxiliary section as described the second auxiliary section adaptation.
9. according to the Mode-locking oil cylinder described in claim 1-6 any one, it is characterized in that: described driving member and described adjusting screw(rod) interference fit are installed, in described adjusting screw(rod) in driving member rear side be provided with one can backstop driving member back-up ring, in adjusting screw(rod), be provided with one without lubricating cup scholar in driving member front side, described without lubricating cup scholar and described regulating handle sliding connection.
10. a Jet forming machine, is characterized in that, comprises the Mode-locking oil cylinder as described in claim 1-9 any one.
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| CN201410037406.7A CN103742480B (en) | 2014-01-24 | 2014-01-24 | Jet forming machine and Mode-locking oil cylinder thereof |
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| CN201410037406.7A CN103742480B (en) | 2014-01-24 | 2014-01-24 | Jet forming machine and Mode-locking oil cylinder thereof |
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| CN106930989A (en) * | 2015-12-31 | 2017-07-07 | 王超霞 | A kind of gas-liquid pressure-boosting stepping actuator |
| CN107013531B (en) * | 2017-04-18 | 2018-08-07 | 广东豪美新材股份有限公司 | A kind of reversed short pushing device of aluminium hot shears |
| CN107763004A (en) * | 2017-11-24 | 2018-03-06 | 河北天行机械制造有限公司 | Mechanical increased stroke-adjustable gas cylinder |
| CN107806456A (en) * | 2017-12-06 | 2018-03-16 | 富强鑫（宁波）机器制造有限公司 | One kind die sinking positional cylinder |
| CN113883125B (en) * | 2021-10-28 | 2023-12-22 | 山东远观恩福机械设备有限公司 | Metallurgical cylinder with multistage cushioning effect |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS59170512A (en) * | 1983-03-18 | 1984-09-26 | Toshiba Mach Co Ltd | Linear actuator |
| JP3559213B2 (en) * | 2000-03-03 | 2004-08-25 | 株式会社半導体先端テクノロジーズ | Load port and production method using it |
| CN201092990Y (en) * | 2007-09-12 | 2008-07-30 | 夏善海 | Oil cylinder journey adjustable structure |
| CN101769277B (en) * | 2008-12-29 | 2012-06-27 | 佛山市沃德森板业有限公司 | Hydraulic oil cylinder |
| CN102927079A (en) * | 2012-11-12 | 2013-02-13 | 泸州华西机械有限责任公司 | Stroke adjustable oil cylinder |
| CN203809404U (en) * | 2014-01-24 | 2014-09-03 | 震雄机械（深圳）有限公司 | Injection molding machine and mode locking oil cylinder thereof |
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Address after: Building G, Building 102, Zone A Office Building, Zhenxiong Industrial Park, No. 177 Renmin West Road, Jinsha Community, Kengzi Street, Pingshan District, Shenzhen City, Guangdong Province, 518000. Building A, Building B, Building C, Building D, Building E-1, Building F, Building B, Building 7, Building 8, Building 10, Building 11 Patentee after: CHEN HSONG MACHINERY (SHENZHEN) CO.,LTD. Address before: 518000, Building B-1, Building C-1, Building D, Building E-1, Building F-1, Zone B-7-B, No. 31 Renmin Middle Road, Kengzi Office, Pingshan New District, Shenzhen City, Guangdong Province Patentee before: CHEN HSONG MACHINERY (SHENZHEN) CO.,LTD. |