CN102514222A - Multifunctional ultrahigh-pressure ten-thousand-ton grade press machine - Google Patents
Multifunctional ultrahigh-pressure ten-thousand-ton grade press machine Download PDFInfo
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- CN102514222A CN102514222A CN201110410107XA CN201110410107A CN102514222A CN 102514222 A CN102514222 A CN 102514222A CN 201110410107X A CN201110410107X A CN 201110410107XA CN 201110410107 A CN201110410107 A CN 201110410107A CN 102514222 A CN102514222 A CN 102514222A
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Abstract
The invention discloses equipment capable of simultaneously completing bulging molding operation and ultrahigh-pressure compression molding operation for large-size workpieces. The equipment comprise an upper mold, a lower mold, a base, piston rods, oil cylinders, an oil pump and connecting pipelines, power cables, control circuits and the like among the upper mold, the lower mold, the base, the piston rods, the oil cylinders and the oil pump, wherein main oil cylinders are respectively and uniformly spaced on both sides of a pressure working zone, each main oil cylinder is fixed on the upper mold, the piston rods of the main oil cylinders and the upper mold are in a sliding fit, the piston rods also have the function of a guide rod apart from the function of exerting pressure, and the lower ends of the piston rods of the main oil cylinders are fixed on the lower mold.
Description
Technical field
The present invention relates to a kind of pressure forming machine,, can accomplish the equipment of the compression molding operation of bulging moulding and hyperpressure simultaneously particularly to large-size workpiece.The present invention includes upper die and lower die, support, piston rod, oil cylinder, oil pump and connecting line each other and compositions such as power cable, control circuit.
Background technology
In the commercial production activity, usually need the working pressure former to come process component.Processing such as the plate-type evaporator heat exchange plate; Need pressure forming machine that certain pressure is provided; Contact with on the mould about being installed in is tightly pushed down heat exchange plate both sides plate, the constraint local deformation in the contact contact site, and certain space then need be vacated in all the other places; The both sides plate is formed streamlined cavity by yield deformation after in heat exchange plate, sending into high pressure water; Other parts such as automobile engine cover, car door etc. then need press device that certain pressure is provided, utilize particular manufacturing craft with plate draw, indent, form specific shape to satisfy different needs.Therefore we can say that the application of pressure forming machine very extensively.
Pressure forming machine is the most common has hydraulic press, hydraulic press and bulging make-up machine etc., and its purposes is also varied.In general; For the required bulging former of plate-type evaporator heat exchange plate processing; The equipment of only requiring provides higher pressure, and for the requirement of the kinematic accuracy between the mould is then not high up and down, so this type forcing press need not to be provided with guiding mechanism; Its purposes is also comparatively single, promptly can only be used for the bulging moulding of plate.Then can directly cause processed plate to tear breakage when using as molding apparatus because of the inconsistent generation of upper and lower mould kinematic accuracy is displaced sideways in Working motion with this type bulging former.Another kind of hydraulic press and hydraulic press, owing to utilize guiding mechanisms such as many cover guide rods, guide pillar, the kinematic accuracy about it between mould has obtained certain guarantee; But because the existence of guiding mechanism limited its usage space, and this kind equipment can't use as the bulging make-up machine; While is at the parts such as plate-type evaporator heat exchange plate of process larger sized and profile; For satisfying its instructions for use, make the profile of this kind equipment huge, floor space is wide, and equipment price is high; Especially hydraulic press also need consume great amount of water resources, and popularization is very not high.
Summary of the invention
The present invention provides the drum pressure of catchmenting to be expanded into type and compression molding is an one; Can overcome the deficiency of prior art; Can guarantee the kinematic accuracy between upper and lower mould, not need to be provided with separately the guider of guide rod, guide pillar and so on again, and have characteristics such as floor space is little, equipment volume is less relatively.
Multi-functional ton forcing press of the present invention comprises upper die and lower die, support, piston rod, oil cylinder, oil pump, and connecting line each other and power cable, control circuit; And auxiliary equipment; The both sides of the pressure workspace of equipment are uniformly-spaced arranged master cylinder respectively, and each master cylinder is fixed on the patrix, and the piston rod of master cylinder and last intermode are slidingly matched; Except that playing the effect of exerting pressure, also play the effect of guide post, the lower end of the piston rod of master cylinder is fixed on the counterdie.
, oil cylinder moves down when carrying out pressure forming work the trend that the pressure that oil cylinder provided impels piston rod to have to move upward when driving patrix; Move up when carrying out rollback work when oil cylinder drives patrix, the pressure that oil cylinder provided impels piston rod to have the trend that moves downward again.To cause intermittent the moving up and down of the frequent generation of piston rod so in the course of the work, and finally cause kinematic accuracy and equipment rigidity not enough.Multi-functional ton forcing press of the present invention; Be provided with a shaft shoulder at piston-rod lower end; Stationary fit has the piston rod cylinder sleeve that is fixed on the counterdie on this shaft shoulder; The position that the said piston shaft shoulder is positioned at below the counterdie has an annular groove, the cambridge ring pad is installed in this groove and is positioned at the snap ring under the cambridge ring pad.To utilize during attachment screw on tightening snap ring wedge structure with piston rod tightly, stable, be assembled together with counterdie reliably, avoid and overcome the gap and the motion that might produce between piston rod and the counterdie.Adopt this structure can guarantee the reliable and stable connection of piston and following intermode, the rigidity of enhancement apparatus and intensity, but the difficulty of simplified apparatus processing also simultaneously, and the kinematic accuracy between the assurance upper and lower mould.
In multi-functional ton forcing press of the present invention, each operating cylinder is made up of master cylinder and pressurized cylinder.This structure is when work; Switch the motion of the solenoid directional control valve realization equipment in the hydraulic manifold block through the action button on the switch board; Be connected flexible pipe with process hydraulic oil to the work of master cylinder fuel feeding through master cylinder oil-feed manifold trunk, the required drive source is provided, pressurized cylinder fuel feeding and action stop.Carrying out the compression molding operation, bigger, complex-shaped when workpiece size, when needing equipment that hyperpressure is provided, at first should be through the normal fuel injection mode to the master cylinder fuel feeding; Patrix is moved with spun work to be contacted fast; To raise labour efficiency, switch relevant solenoid directional control valve through the action button on the switch board again, stop fuel feeding in master cylinder oil-feed manifold trunk; But in the total oil inlet pipe of pressurized cylinder fuel feeding; And enter in the pressurized cylinder through the pressurized cylinder oil inlet hose, at this moment, the fuel system of master cylinder is then come fuel feeding by pressurized cylinder through the pressurized cylinder flowline fully.Because pressurized cylinder inner carrier area is different, the less and fuel-displaced lateral area of oil-feed lateral area is bigger, and area ratio in both sides is 4 times in the embodiment of the invention; That is to say; Increased 4 times simultaneously through the charge oil pressure to master cylinder behind the pressurized cylinder, formed hyperpressure, the total pressure that equipment can provide has also increased 4 times; Can reach more than 5 tons, constitute the super-pressure forcing press.
Press device is when work; When hydraulic oil flows in pipeline owing to receive the influence of tube wall damping and discontinuity fuel system; To form pipeline pressure inevitably descends; This just causes, and operating pressure has nothing in common with each other in each master cylinder that is connected in master cylinder oil-feed manifold trunk head and the tail two ends, causes master cylinder unbalance stress and patrix running precision to be difficult to guarantee; Uneven for solving pipeline pressure; Master cylinder oil-feed manifold trunk pressure balance pipeline is set among the present invention; Be longitudinal pressure balance pipe and transverse pressure balance pipe, make that first section of either side master cylinder oil-feed manifold trunk and opposite side master cylinder oil-feed manifold trunk are terminal to link to each other, make master cylinder oil-feed manifold trunk pipeline pressure balance from beginning to end between the two row master cylinders; Form a circular pressure balance sysmte, identical with this pressure that guarantees to get into before each master cylinder.
In the middle of the course of work; Because the machining accuracy of each part and systematic error still can cause operating pressure inequality in each master cylinder; And then influence running precision;, hydraulic oil,, also possibly cause the inequality of operating pressure in each master cylinder when connecting flexible pipe through process hydraulic oil although pressure can be consistent in the trunk line owing to the expansion of flexible pipe.Multi-functional ton forcing press of the present invention adopts master cylinder longitudinal pressure balance pipe to interconnect between the process working chamber of its vertical per two master cylinders of each master cylinder; Adopt the transverse pressure balance pipe to be interconnected between the process working chamber of per two horizontal adjacent master cylinders.Through these balance pipes, the operating pressure chamber of each master cylinder is connected together mutually, form a linker structure, thus in full accord in the operating pressure that has fundamentally guaranteed each master cylinder.Upper and lower mould kinematic accuracy when this structure of the present invention can be guaranteed operation causes processed plate to tear damaged phenomenon and thoroughly overcome the forcing press that has no guider in the prior art because of kinematic accuracy between upper and lower mould is not enough.
In the multi-functional ton forcing press of the present invention, connect between flexible pipe and the master cylinder at the process hydraulic oil of each master cylinder and to be provided with hydraulic control one-way valve, be provided with pressure oil pipe dorsad between master cylinder backhaul working chamber and hydraulic control one-way valve.Be provided with dorsad behind the pressure oil pipe at it when pressure is higher than the master cylinder upper pressure dorsad; During backhaul duty just; Between backhaul cavity and hydraulic control one-way valve, form a connecting pipeline, hydraulic control one-way valve can prevent that hydraulic oil is back in the master cylinder oil-feed manifold trunk when adopting the supercharging fuel system; Accomplish a suppression process; When patrix need move upward; Because master cylinder bottom (being in the backhaul working chamber) pressure is higher than upper pressure; This moment in the master cylinder through check valve dorsad pressure oil pipe carry a pressure dorsad to hydraulic control one-way valve, can force one-way valve opens, make patrix be able to move upward.
Also be provided with bulging moulding hydraulic pressure system in the multi-functional ton pressure forming machine of the present invention.
Multi-functional ton forcing press of the present invention is when using as the bulging make-up machine; Elder generation is installed in the contact spacing on demand that needs are compacted into the template material on two block plates, and two block plates that contact will be installed again are assemblied in respectively on the multi-functional ton forcing press upper and lower mould of the present invention.With seam weldering around the light sheet material of two same size specifications, form one four side weld and close and the element of hollow earlier, weld a water inlet pipe again; Be encased in starting pressure machine behind the assigned address; Contact with on the mould about being installed in is tightly pushed down heat exchange plate both sides plate, and the hydraulic pressure system water filling in heat exchange plate through being provided with separately, and pressure of supply water constantly raises; Heat exchange plate two plates are tightly killed by multi-functional ton forcing press upper and lower mould in the contact contact site and retrain local deformation; All the other are local because vacated certain space, and the both sides plate is finally swelled by yield deformation, forms bulge one by one and fairshaped cavity.Hydraulic pressure, oil pressure acting in conjunction at this moment, the duty of formation water pressure.
Can know that by aforementioned content the present invention has following advantage:
1) bulging operation and compression molding operation fully;
2) since in the whole device with piston rod and the last mode structure that is mated, make among the present invention additional guiding mechanism set in the no prior art, so mechanism is simple relatively, whole plant area area is less;
3) owing to no door type structure of the prior art, so its working region is relatively large, can be suitable for the processing and forming operation of large tracts of land workpiece, and can in operations for forming, accomplish the bulging operations for forming, increases work efficiency greatly.The master cylinder of biserial equidistant placement makes stressed evenly reasonable, compact conformation, and equipment self weight alleviates greatly.In the prior art when the maintain and replace master cylinder, need the overall pulling down door frame or with master cylinder all one by one the dismounting, the maintenance with the operational maintenance cost extremely the costliness.Cambridge ring pad on the main oil cylinder piston bar that only needs among the present invention to keep in repair or to change be positioned at snap ring under the cambridge ring pad and unclamp and lay down, unclamp the connecting bolt between master cylinder and the patrix simultaneously, just removable this master cylinder.The maintenance and maintain very convenient.
Description of drawings
Accompanying drawing 1 is the sketch map of one embodiment of the present of invention, among the figure one of them master cylinder is analysed and observe.
Accompanying drawing 2 is the cross section cut-away illustration of Fig. 1.
Accompanying drawing 3 is the vertical view of Fig. 1.
Accompanying drawing 4 is that piston rod is connected the fixed structure enlarged drawing with counterdie.
Accompanying drawing 5 is the snap ring structure chart.
1 is high-pressure oil pump, and 2 is accumulator, and 3 is the high-pressure oil pump oil inlet pipe, and 4 is hydraulic oil container, and 5 is power cable and control circuit; 6 is switch board, and 7 is support, and 8 is foundation bolt, and 9 is the counterdie connecting bolt, and 10 is counterdie; 11 is piston rod counterdie cylinder sleeve, and 12 is snap ring, and 13 is piston rod, and 14 is patrix, and 15 is the total oil inlet pipe of pressurized cylinder; 16 is master cylinder, and 17 for backhaul hydraulic oil connects flexible pipe, and 18 is master cylinder longitudinal pressure balance pipe, and 19 is hydraulic manifold block, and 20 for going into the total oil return pipe of fuel tank; 21 is pressurized cylinder, and 22 is the pressurized cylinder flowline, and 23 is hydraulic control one-way valve, and 24 is master cylinder oil-feed manifold trunk; 25 is check valve pressure oil pipe dorsad, and 26 for going out master cylinder oil return house steward, and 27 is master cylinder transverse pressure balance pipe, and 28 are process hydraulic oil connection flexible pipe; 29 is the cylinder sleeve attachment screw, and 30 is piston rod patrix cylinder sleeve, and 31 is the pressurized cylinder oil inlet hose, and 32 is master cylinder oil-feed manifold trunk pressure balance pipeline; 33 is the cambridge ring pad, and 34 is the piston rod shaft shoulder, and 35 is the piston rod annular groove, and 36 is bulging moulding hydraulic pressure system.
The specific embodiment
Referring to accompanying drawing 1; Multi-functional ton pressure forming machine of the present invention by patrix 14, counterdie 10, be fixed in the master cylinder 16 on the patrix 14; Be fixed in piston rod 13, oil pump 1, hydraulic pressure system 36 on the counterdie 10, and be communicated with oil pipe, auxiliary equipment formation accordingly.Wherein: master cylinder 16 is uniformly-spaced arranged in the both sides of pressure workspace, referring to accompanying drawing 3; The lower end of the piston rod of master cylinder (13) is fixed on the counterdie (10); 13 in patrix 14 and piston rod are slidingly matched with cover 30, and referring to accompanying drawing 2, the piston rod 13 and the last intermode of master cylinder is slidingly matched and except that can playing the effect of exerting pressure, also played the effect of guide post.This structure can make press that bigger working space is arranged, to be suitable for the processing of large tracts of land plate.
Piston rod of the present invention and following intermode combine to have adopted following structure: piston rod 13 lower ends be provided with a shaft shoulder 34; Stationary fit has the piston rod cylinder sleeve 11 that is fixed on the counterdie on this shaft shoulder; The position that the said shaft shoulder 34 is positioned at below the counterdie 10 has an annular groove 35, and cambridge ring pad 33 and the snap ring 12 that is positioned at cambridge ring pad 33 are installed in this groove.Because move down when carrying out pressure forming work when oil cylinder drives patrix 14, the pressure that oil cylinder provided impels piston rod 13 to have the trend that moves upward; Move up when carrying out rollback work when oil cylinder drives patrix 14, the pressure that oil cylinder provided impels piston rod 13 to have the trend that moves downward again.To cause intermittent the moving up and down of piston rod 13 frequent generations so in the course of the work, and finally cause kinematic accuracy and equipment rigidity not enough.Multi-functional ton forcing press of the present invention; Be provided with a shaft shoulder 34 in piston rod 13 lower ends; Stationary fit has the piston rod cylinder sleeve 11 that is fixed on the counterdie on this shaft shoulder; The position that the said piston rod shaft shoulder is positioned at below the counterdie 10 has an annular groove 35, cambridge ring pad 33 is installed in this groove and is positioned at the snap ring 12 under the cambridge ring pad.To utilize during attachment screw on tightening snap ring 12 wedge structure with piston rod tightly, stable, be assembled together with counterdie reliably, avoid and overcome the gap and the motion that might produce between piston rod 13 and the counterdie 10.Adopt this structure can guarantee the reliable and stable connection of piston and following intermode, the rigidity of enhancement apparatus and intensity, but the difficulty of simplified apparatus processing also simultaneously, and the kinematic accuracy between the assurance upper and lower mould.
In the present invention shown in Figure 1: each master cylinder 16 usefulness is through master cylinder oil-feed manifold trunk 24 parallelly connected fuel feeding.In each master cylinder 16 that vertically is provided with, adopt master cylinder longitudinal pressure balance pipe 18 to interconnect between the process working chamber of per two master cylinders; And adopt transverse pressure balance pipe 27 to be interconnected between the process working chamber of per two horizontal adjacent master cylinders 16, referring to accompanying drawing 2.But adopted this structure can guarantee when operation all high-precise synchronization motions of each oil cylinder, guaranteed the kinematic accuracy between upper and lower mould, thoroughly overcome the problem that the upper and lower mould kinematic accuracy that exists in the prior art can't guarantee.
Each oil cylinder of the present invention is made up of master cylinder 16 and pressurized cylinder 21, when between upper and lower mould, carrying out like this moving on a large scale, relies on oil pipe directly to the process working chamber oiling of master cylinder, when exerting pressure operation, then relies on the pressurized cylinder fuel feeding, produces operational pressure.
Among the present invention, connect between flexible pipe 28 and the master cylinder 16 at the process hydraulic oil of each master cylinder and to be provided with hydraulic control one- way valve 23,23 of master cylinder backhaul working chamber and hydraulic control one-way valves are provided with pressure oil pipe 25 dorsad.When adopting the supercharging fuel system, because the effect of hydraulic control one-way valve 23 can prevent that hydraulic oil is back in the master cylinder oil-feed manifold trunk; Accomplish a suppression process; When patrix need move upward; Because master cylinder bottom pressure is higher than upper pressure, this moment in the master cylinder through check valve dorsad pressure oil pipe carry a pressure dorsad to hydraulic control one-way valve, to overcome the phenomenon that hydraulic control one-way valve 23 can not the station be opened; Force check valve 23 to be opened, oil is refluxed.
Also be provided with the hydraulic pressure system 36 of bulging moulding among the present invention, so that carry out the bulging operation.
Preferably adopt processing of material all in one piece processing during the present invention implements, and be aided with and strengthen gusset etc. to strengthen its rigidity.Master cylinder 16, pressurized cylinder 21 parts, piston rod patrix cylinder sleeve 30, piston rod counterdie cylinder sleeve 11 and piston rod 13 adopt the forging mode, and precision optical machinery processing wherein also needs electroplating processes outside the piston rod 13, to increase its wearability.Should earlier support 7 usefulness foundation bolts 8 be fixed on the Equipment Foundations adjustment detection level during assembling.Counterdie 10 is installed then, with counterdie connecting bolt 9 with counterdie 10 and support 7 secure fixation.Then piston rod counterdie cylinder sleeve 11 is assembled on the counterdie 10; By root piston rod 13 is installed again, cambridge ring pad 33 and snap ring 12 are constantly tightened the snap ring attachment screw; Because the squeezing action of two wedge shapes; Make piston rod tightly, seamlessly be fixed on the counterdie, install and fixing reliable that guiding accuracy improves thereby make.Again piston rod patrix cylinder sleeve 30 and patrix 14 are assembled together, tighten cylinder sleeve attachment screw 29.Patrix 14 is passed each piston rod 13, lie in a horizontal plane on the counterdie 10, assembling master cylinder 16 and each fuel feeding and pressure balance pipeline and valve form press body.
High-pressure oil pump 1, accumulator 2, hydraulic oil container 3, switch board 6 are installed and are connected each oil feed line and control circuit, power cable, decomposition pressure machine system.
During work, general supply button on the start-up control cabinet 6 is awaited orders each equipment normal power-up, checks whether each consumer and oil circuit be normal.Start high-pressure oil pump 1 play button, high-pressure oil pump 1 work, fuel feeding in hydraulic manifold block 19, at this moment, hydraulic oil directly flows back in the hydraulic oil container 3 equipment no-load running through hydraulic manifold block 19 through going into the total oil return pipe 20 of fuel tank.Start the rising button; Reversal valve action in the signal of telecommunication control hydraulic manifold block 19, hydraulic oil is connected flexible pipe 17 through oil feed line and finally enters into master cylinder 16 bottoms with backhaul hydraulic oil, because master cylinder 16 bottom pressure are higher than upper pressure; This moment in the master cylinder 16 through check valve dorsad pressure oil pipe 25 carry a pressure dorsad to hydraulic control one-way valve 23; Force check valve 23 to be opened, hydraulic oil is back to master cylinder oil-feed manifold trunk 24 in the master cylinder 16, and finally flows back to fuel tank.Master cylinder 16 moves upward along piston rod 13 together with patrix 14 under the promotion of hydraulic oil, makes to leave certain distance between the upper and lower mould, and the workpiece of needs compactings or moulding is placed into assigned address.Start the decline button; Reversal valve action in the signal of telecommunication control hydraulic manifold block 19; Hydraulic oil is connected flexible pipe 28 through oil feed line and finally enters into master cylinder 16 tops with process hydraulic oil; Master cylinder 16 moves downward along piston rod 13 together with patrix 14 under the promotion of hydraulic oil, can accomplish bulging moulding and the compression molding under the certain pressure behind the arrival assigned address.
When compression molding, bigger, complex-shaped when workpiece size, when needing equipment that hyperpressure is provided, at first should be according to aforesaid operations; Patrix is moved with spun work to be contacted fast; To raise labour efficiency, switch the corresponding solenoid directional control valve of liquid through switch board 6 high pressure buttons again, stop fuel feeding in master cylinder oil-feed manifold trunk 24; But in the total oil inlet pipe 15 of pressurized cylinder fuel feeding; And enter in the pressurized cylinder 21 through pressurized cylinder oil inlet hose 31, at this moment, the fuel system of master cylinder 16 is then come fuel feeding by pressurized cylinder 21 through pressurized cylinder flowline 22 fully.Because pressurized cylinder inner carrier area is different, the less and fuel-displaced lateral area of oil-feed lateral area is bigger, and area ratio in both sides is 4 times in the present embodiment; That is to say that increased 4 times simultaneously through the charge oil pressure to master cylinder behind the pressurized cylinder, the total pressure that equipment can provide has also increased 4 times; Reach more than 5 tons, constitute high-pressure forming machine, patrix 14 moves downward gradually; Force workpiece deformation, accomplish the die work under the hyperpressure.Operating pressure in entire work process in each master cylinder 16 of equalizing line balance connects together the operating pressure chamber of each master cylinder mutually, forms a linker structure, thereby in full accord in the operating pressure that has fundamentally guaranteed each master cylinder.
The multi-functional ton pressure forming machine of the present invention pressure of foundation is 1.2 tons, installs to can be used as the bulging make-up machine behind the mould have contact and use, and in plate, injects clear water, forms the combination pressure pattern of hydraulic pressure, oil pressure; The mould of arbitrary form can be installed again, as molding apparatus, switch fuel system, can provide up to the pressure more than 5 tons, equipment overall structure is compact, and guiding accuracy is high, and is pollution-free, do not have discharging.
Claims (6)
1. multi-functional ton forcing press; Comprise patrix (14), counterdie (10), support (7), piston rod (13), oil cylinder, oil pump (1); And connecting line each other and power cable, control circuit, and auxiliary equipment, it is characterized in that uniformly-spaced arranging master cylinder (16) respectively in the both sides of pressure workspace; And master cylinder (16) is fixed on the patrix (14); The piston rod of master cylinder (13) is slidingly matched with last intermode, except that playing the effect of exerting pressure, also plays the effect of guide post, and the lower end of the piston rod of master cylinder (13) is fixed on the counterdie (10).
2. multi-functional ton forcing press according to claim 1; It is characterized in that piston rod (13) lower end is provided with a shaft shoulder (34); Stationary fit has the piston rod cylinder sleeve (11) that is fixed on the counterdie on this shaft shoulder; The position that the said shaft shoulder (34) is positioned at below the counterdie (10) has an annular groove (35), cambridge ring pad (33) is installed in this groove and is positioned at the snap ring (12) on the cambridge ring pad (33).
3. multi-functional ton forcing press according to claim 2 is characterized in that each oil cylinder is made up of master cylinder (16) and pressurized cylinder (21).
4. according to claim 1 or 2 or 3 described multi-functional ton forcing presses, it is characterized in that adopting master cylinder longitudinal pressure balance pipe (18) to interconnect between the process working chamber of vertical per two master cylinders of each master cylinder (16); Adopting between the process working chamber of per two horizontal adjacent master cylinders adopts transverse pressure balance pipe (27) to be interconnected.
5. multi-functional ton pressure forming machine according to claim 4; It is characterized in that connecting between flexible pipe (28) and the master cylinder (16) and be provided with hydraulic control one-way valve (23), be provided with pressure oil pipe (25) dorsad between master cylinder backhaul working chamber and hydraulic control one-way valve (23) at the process hydraulic oil of each master cylinder.
6. multi-functional ton pressure forming machine according to claim 5 is characterized in that also being provided with in the device bulging moulding hydraulic pressure system (36).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110410107XA CN102514222A (en) | 2011-12-09 | 2011-12-09 | Multifunctional ultrahigh-pressure ten-thousand-ton grade press machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110410107XA CN102514222A (en) | 2011-12-09 | 2011-12-09 | Multifunctional ultrahigh-pressure ten-thousand-ton grade press machine |
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| CN102514222A true CN102514222A (en) | 2012-06-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109551800A (en) * | 2019-01-15 | 2019-04-02 | 常州机电职业技术学院 | Gas-liquid conversion press |
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| CN2061893U (en) * | 1989-12-20 | 1990-09-12 | 胡景君 | Upright columnless frameless draw / press type hydraulic press |
| US20080053609A1 (en) * | 2006-08-29 | 2008-03-06 | Robert Burkle Gmbh | Press and method for laminating board-shaped work pieces via pressure and heat |
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| CN109551800A (en) * | 2019-01-15 | 2019-04-02 | 常州机电职业技术学院 | Gas-liquid conversion press |
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Application publication date: 20120627 |