CN109703090A - A kind of hydraulic press with pressurization - Google Patents
A kind of hydraulic press with pressurization Download PDFInfo
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- CN109703090A CN109703090A CN201910147188.5A CN201910147188A CN109703090A CN 109703090 A CN109703090 A CN 109703090A CN 201910147188 A CN201910147188 A CN 201910147188A CN 109703090 A CN109703090 A CN 109703090A
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Abstract
The present invention relates to a kind of hydraulic presses with pressurization, hydraulic press includes rack, rack is equipped with hydraulic cylinder, molding pressure exerting arrangement is connected on the piston rod of hydraulic cylinder, molding pressure exerting arrangement includes connector and fixator, link mechanism is equipped between connector and fixator, link mechanism includes first toggle link hinged with fixator, the hinged connecting rod with connector, it is hinged between connecting rod and the first toggle link, it further include swinging position limiting structure, first toggle link is equipped with hinged fit structure at the articulated position or close articulated position with connecting rod, the second toggle link is hinged in rack, elastic keeper is equipped between second toggle link and rack, the free end of second toggle link is equipped with clamping structure, clamping structure is connected with hinged fit structure when piston rod downlink is molded and forms hinged relationship and link mechanism and the second toggle link is made to collectively form toggle Link mechanism, clamping structure on the piston rod row when with hinged fit structure relative separation, to increase the operating space of forming technology.
Description
Technical field
The present invention relates to formers, especially suitable for big stroke and with the hydraulic press of pressurization.
Background technique
Hydraulic press operating pressure is big, runs smoothly, and impulse stroke can freely control and adjustable range is big, working space compared with
Greatly, efficiency is moderate, widely applicable, and body construction is simple, and manufacture is easy.But hydraulic press configuration is complex, big hydraulic of tonnage
It is higher that machine is typically equipped with independent pumping plant, control system and more complicated hydraulic circuit, cost.Cooperated using hydraulic device
Mechanical force adding machine can be generated very big operating pressure by lesser hydraulic device.
Chinese invention patent application as application publication number is CN106182861A, data of publication of application is 2016.12.07 is public
A kind of oil cylinder-bar-link drive system for Composite Transmission hydraulic press, including symmetrical connecting rod pressurizing mechanism and hydraulic engine oil are opened
Cylinder, wherein symmetrical connecting rod pressurizing mechanism is made of symmetrical two groups of link mechanisms, each group of link mechanism is by toggle link, elbow
Pin, power output bar, power output pin, drive rod, drive pin, swivel pin are constituted, and toggle link connects the upper beam of hydraulic press, driving by knuckle-pin
Bar passes through the small slide of driving pin connection hydraulic press, and power output bar is connect by contributing to sell with the sliding block of hydraulic press, toggle link, drive rod
Crank connecting rod mechanism is formed further through hinge pin connection with power output bar, the cunning of hydraulic press is driven by the movement of the oil cylinder of hydraulic press
The reciprocating motion of block realization hydraulic press.
Above-mentioned crank connecting rod mechanism when close to lower dead point position (extreme position) with 6-8 times of reinforcement coefficient, relatively
It can reduce the power output of oil cylinder with the conventional hydraulic machine of speed with tonnage, installed capacity reduces, and equipment manufacturing cost can sharp fall.
Power output bar is equivalent to toggle link, and drive rod is equivalent to connecting rod, and two toggle links form toggle mechanism, wherein a toggle link and connecting rod form connecting rod
Mechanism, two toggle links and connecting rod collectively constitute crank connecting rod mechanism.But two toggle links of above-mentioned crank connecting rod mechanism are hinged with connecting rod,
The maximum die sinking space of hydraulic press is the length of two toggle links, and mold die sinking space is small, and operating space is small, influences components after forming
Pick-and-place, and cannot be used for processing thicker workpiece, be only used for the equipment as the smaller stroke of injector clamping mechanism one kind, and
The case where needing larger operating space for extrusion molding, liquid forging etc., then be not available.
Summary of the invention
The purpose of the present invention is to provide a kind of hydraulic presses with pressurization, to solve band toggle in the prior art
The former of link mechanism is influenced to cause stroke smaller by crank connecting rod mechanism, can not have asking for larger operating space
Topic, to adapt to the big pressure of hub extrusion forming, big die sinking space, the process requirement of lesser pressure stroke.
A kind of hydraulic press with pressurization of the invention adopts the following technical scheme that
Hydraulic press with pressurization includes rack, and rack is equipped with hydraulic cylinder, is connected with molding on the piston rod of hydraulic cylinder
Pressure exerting arrangement, the molding pressure exerting arrangement includes connector and fixator, and connector is connect with piston rod, and upper mold is pacified when in use
On the holder, lower die is mounted on the rack dress, and the company that at least two groups are arranged symmetrically is equipped between the connector and fixator
Linkage, the fixator are lifted on the lower section of connector by link mechanism, and link mechanism includes hinged with fixator the
One toggle link and the hinged connecting rod of connector, are hinged between connecting rod and the first toggle link；Molding pressure exerting arrangement further include for
Before molding in the case where link mechanism is by state of tension, guarantee have certain angle without quilt between the first toggle link being hinged and connecting rod
The swing position limiting structure being straightened；First toggle link is tied in the articulated position with connecting rod or at articulated position equipped with hinged cooperation
Structure is hinged with the second toggle link in the rack, and elastic keeper is equipped between the second toggle link and rack so that the second toggle link from
It is overhang by end in setting position, the free end of the second toggle link is equipped with clamping structure, and the clamping structure is molded in piston rod downlink
When be connected with the hinged fit structure and form hinged relationship and link mechanism and the second toggle link is made to collectively form crank connecting rod
Mechanism, the clamping structure on the piston rod row when with the hinged fit structure relative separation.
The beneficial effects of the present invention are: driving molding pressure exerting arrangement fast downlink by piston rod, keep upper die and lower die smooth
Molding；After the completion of molding, piston rod is continued traveling downwardly, and link mechanism is swung out by pressure, the hinged cooperation knot on the first toggle link
Structure is connected with the clamping structure of the second toggle link in setting position and forms hinged relationship, keeps link mechanism and the second toggle link total
With crank connecting rod mechanism is constituted, the pressure of hydraulic press can be amplified by crank connecting rod mechanism, greatly increase forming
Power can use lesser hydraulic device, produce the extruded product of larger size；In hydraulic press backhaul, link mechanism and
Two toggle links can be separated by clamping structure with the realization of hinged fit structure, and the impulse stroke of equipment is more very much not by crank connecting rod mechanism
Constraint, bigger operating space is provided for extrusion molding, can meet need big forming force and big operating space forming work
The needs of skill.
For the structure for simplifying hydraulic press, the first toggle link described in this programme is equipped with mechanism articulated shaft, second toggle link
Free end be equipped with axial trough, when the first toggle link is swung out mechanism articulated shaft slide into axial trough in and form hinged relationship and make
Link mechanism and the second toggle link form crank connecting rod mechanism, and the mechanism articulated shaft constitutes the hinged fit structure, the axis
Slot constitutes the clamping structure.
For the structure for being further simplified hydraulic press, the hinge axes and mechanism of connecting rod described in this programme and the first toggle link are cut with scissors
The axis of spindle is consistent.
For convenience of design processing, connecting rod described in this programme is equipped with arc retaining groove, and the first toggle link is equipped with spacer pin, institute
State link mechanism is made to have between the first toggle link and connecting rod by the side cell wall block cooperation of pulling force time limit position pin and arc retaining groove
Certain angle can be swung out, the arc retaining groove and spacer pin by the first toggle link when pressure around the articulated shaft with fixator
Constitute the swing position limiting structure.
For the structure for simplifying hydraulic press, elastic keeper described in this programme is torsional spring.
To be preferably oriented to molding pressure exerting arrangement, cooperation is oriented between connector and rack described in this programme.
To simplify rack construction, rack described in this programme includes upper beam, central sill and underbeam, is equipped on upper beam hydraulic
Cylinder, has the through-hole passed through for molding pressure exerting arrangement on central sill, and second toggle link is hinged on the inner sidewall of through-hole.
To make hydraulic press adapt to the forming technology of different sized products, under passing through between central sill and underbeam described in this programme
Pull rod and the nut being threaded on lower pull rod connection, to realize the tune to distance between central sill and underbeam by screw on nut
Section；Since the die size of different sized products is also different, can make by adjusting the distance between central sill and underbeam
Spacing between beam and underbeam is to adapt to the installation requirements of different sized molds.
Detailed description of the invention
Die opening state figure when Fig. 1 shapes for a kind of hydraulic press with pressurization of the invention for wheel hub is (in figure
Torsional spring and guide rail guiding mechanism is not shown)；
Fig. 2 is state diagram when just molding when a kind of hydraulic press with pressurization of the invention is shaped for wheel hub；
Fig. 3 is molding, link mechanism and the second elbow when a kind of hydraulic press with pressurization of the invention is shaped for wheel hub
Bar has just hingedly constituted state diagram when crank connecting rod mechanism；
Fig. 4 be when a kind of hydraulic press with pressurization of the invention is shaped for wheel hub crank connecting rod mechanism close to the limit
State diagram when position；
Fig. 5 is a kind of swing position limiting structure schematic diagram of hydraulic press with pressurization of the invention.
In figure: 11- connector；12- guide post；13- articulated shaft；14- guide pillar hole；21- connecting rod；The first toggle link of 22-；23- hinge
Spindle；24- arc retaining groove；25- spacer pin；31- fixator；32- articulated shaft；The second toggle link of 41-；42- articulated shaft；43- axial trough；
51- upper mold；52- backing-out punch；53- type core；54- cavity plate；55- fixed plate；56- mandril；61- hydraulic cylinder；62- piston rod；On 71-
Beam；72- central sill；73- underbeam；81- upper connecting rod；Pull rod under 82-；83- nut；9- blank.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
A kind of specific embodiment of hydraulic press with pressurization of the invention, as shown in Figures 1 to 4, hydraulic press packet
Including rack and hydraulic system.Rack includes upper beam 71, central sill 72 and underbeam 73, and upper connecting rod is equipped between upper beam 71 and central sill 72
81, it is equipped with lower pull rod 82 between central sill 72 and underbeam 73, the connection that is screwed is used between upper connecting rod 81 and upper beam 71, central sill 72,
Using the connection that is screwed between lower pull rod 82 and central sill 72, lower 82 lower end of pull rod is screw-rod structure, and underbeam 73 is fitted with spiral shell
Mother 83, be rotatably assorted connection between lower pull rod 82 and underbeam 73, in use, passing through the adjustable central sill 72 of rotating nut 83 and underbeam
Distance between 73.
Upper beam 71 and central sill 72 use identical lateral dimension in the present embodiment, the spacing of upper connecting rod 81 also with lower pull rod
82 is identical, in other embodiments, can also reduce the lateral dimension of upper beam 71 and the spacing of upper connecting rod 81, keep its structure tighter
It gathers；Further, upper connecting rod 81 or other structures such as frame support structure are fixed as long as can support hydraulic cylinder 61
On middle upper beam 71.
Hydraulic cylinder 61 is installed on upper beam 71, piston rod 62 is equipped on hydraulic cylinder 61, the lower end of piston rod 62 is equipped with
Mold pressure exerting arrangement.Molding pressure exerting arrangement includes connector 11 and fixator 31, and connector 11 is connected to the lower end of piston rod 62,
Fixator 31 is used to install the upper mold 51 of fixing mould, in use, upper mold 51 is mounted on fixator 31, lower die passes through fixed plate
55 are fixed on underbeam 73.Upper mold 51 and lower die in the present embodiment are the wheel hub shaping dies shaped for wheel hub, by turning
Dynamic nut 83 adjusts the distance between central sill 72 and underbeam 73, is adapted to various sizes of mold.Hydraulic cylinder in the present embodiment
61 and hydraulic system it is identical with common hydraulic press.
In the present embodiment the cross section of connector 11 and fixator 31 is rectangle, and the middle part of central sill 72 has to be consistent therewith
Rectangular through-hole.It is led between the inner sidewall of rectangular through-hole and the lateral surface of connector 11 using guide rail guiding mechanism (being not drawn into figure)
To.Four groups of link mechanisms symmetrically arranged on the left and the right are equipped between connector 11 and fixator 31, fixator 31 passes through link mechanism
It is lifted on the lower section of connector 11.
Link mechanism includes by articulated shaft 13 and the hinged connecting rod 21 of connector 11, by articulated shaft 32 and fixator 31
The first hinged toggle link 22, connecting rod 21 and the first toggle link 22 are hinged by articulated shaft 23.Certainly, in other embodiments, four groups
Link mechanism can also front and back be arranged symmetrically between connector and fixator.Second elbow is hinged with by articulated shaft 42 on central sill 72
Bar 41, there are four the second toggle link 41 in the present embodiment is set, four the second toggle links 41 and four groups of link mechanisms are corresponded, above-mentioned
The axis of each articulated shaft is mutually parallel.In other embodiments, the group number of link mechanism settable two groups or other quantity.
In use, the second toggle link 41 is matched with link mechanism is combined into crank connecting rod mechanism, the first toggle link 22 and the second toggle link
41 composition toggle mechanisms, crank connecting rod mechanism, connector 11 and fixator 31 form the booster body of hydraulic press.
Defining close to the side of the link mechanism axis of symmetry is inside, and the side far from the axis of symmetry is outside.Such as Fig. 5 institute
Show, the first toggle link 22 is equipped with spacer pin 25, and connecting rod 21 is equipped with the arc retaining groove 24 that angle is α.Link mechanism is by pulling force shape
Under state, cooperated by the side cell wall block of spacer pin 25 and arc retaining groove 24, guarantees have between connecting rod 21 and the first toggle link 22
For certain angle without being straightened, purpose of design is when between connecting rod 21 and the first toggle link 22 by pressure, can to make the first toggle link
22 swing out.Wherein, articulated shaft 23 is in the outside of articulated shaft 32 Yu 13 line of articulated shaft, so that connecting rod 21, the first toggle link
22 can swing out.Spacer pin 25 in the present embodiment is for convenience of the straight pin of processing, and in other embodiments, spacer pin can
To be the other shapes such as rectangular.Further, spacer pin 25 and arc retaining groove 24 can be exchanged, and spacer pin 25 is located at connecting rod 21
Upper, arc retaining groove 24 is located on the first toggle link 22.
It is equipped between second toggle link 41 and central sill 72 and protects the elasticity that the free end of the second toggle link 41 overhangs in setting position
Gripping member, the elastic keeper in the present embodiment are torsional spring (not shown).
The free end of second toggle link 41 is equipped with axial trough 43, and the axial trough 43 in the present embodiment is opening half slot, axial trough 43
Diameter should meet and can be rotatably assorted with articulated shaft 23, with when the first toggle link 22, connecting rod 21 are swung out, articulated shaft 23 into
Enter in axial trough 43 and cooperatively form clamping structure, link mechanism and the second toggle link 41 is made to collectively form crank connecting rod mechanism.At other
In embodiment, an articulated shaft can be set on the free end of the second toggle link 41, while axial trough 43 is set on the first toggle link 22,
When link mechanism is swung out, the articulated shaft being arranged on the second toggle link 41, which enters in axial trough 43, cooperatively forms clamping structure.
To guarantee upper mold 51, lower die centering molding, guide post 12, fixator 31 are fixed on the connector 11 in the present embodiment
It is equipped with the guide pillar hole 14 being adapted to guide post 12, fixator 31 and connector 11 and guiding is realized by guide post 12.
Lower die in the present embodiment includes cavity plate 54, and type core 53, cavity plate 54 are coaxially fixedly installed in the inner cavity of cavity plate 54
Gap is formed between type core 53, for shaping the tubular inner rim portion of wheel hub, being slidably installed on type core 53 has with mandril
56 backing-out punch 52.Cavity plate 54 and type core 53 are fixed on the fixture plate 55, are slidably matched between mandril 56 and underbeam 73, backing-out punch 52
On mandril 56 connect with liftout tank under hydraulic press.
State when defining between the axis of connecting rod 21 and the first toggle link 22 as depicted in figs. 1 and 2 with certain angle is
Original state, i.e., state when link mechanism is not swung out are original state；Terminate in Plastic Forming, the first toggle link 22 with
It is end of a period state that the axis for the toggle mechanism that second toggle link 41 cooperatively forms, which approaches state when being overlapped, at this time crank connecting rod mechanism
In extreme position.
Before extrusion molding, upper mold 51 and lower die are separately mounted on fixator 31 and underbeam 73, are put into cavity plate 54
Blank 9 detects 51 lower end surface of upper mold to the height distance of articulated shaft 23 and the radius of gyration of articulated shaft 23, then passes through rotation spiral shell
Mother 83 adjust underbeam 73 between central sill 72 at a distance from, make the axial trough 43 for the second toggle link 41 installed on central sill 72 the center of circle be in hinge
On the rotation path of spindle 23.Can also according to fixator 31 when meeting the pathway requirements between fixed plate 55 at a distance from design mould
The height of tool.
The course of work of hydraulic press includes that piston rod drives molding pressure exerting arrangement and is fixed on upper on molding pressure exerting arrangement
The clamping process and the pressurization after molding of 51 downlink of mould.When work, piston rod 62 drives molding pressure exerting arrangement and upper mold 51
Downlink after mold is closed, can be such that articulated shaft 23 slides into the axial trough of the second toggle link 41, and make the second toggle link 41 and link mechanism
Crank connecting rod mechanism is formed, and under the action of the pressure of connecting rod 21, stretches toggle mechanism gradually, to generate reinforcement work
With to mold pressure, so that the metal stock in mold is generated plastic deformation becomes wheel hub cylindrical member.
The specific work process of hydraulic press is as follows: as shown in Figure 1, being put into pie metal in cavity plate 54 under die opening state
Blank 9；By Fig. 1 to Fig. 2, hydraulic press work, piston rod 62 drives molding pressure exerting arrangement and the rapid downlink of upper mold 51, when upper mold 51
When into cavity plate 54 and close to blank 9, hydraulic press is converted into downlink at a slow speed, and upper mold 51 is made to push down blank 9, in closing shown in Fig. 2
Mould state, in this course, fast downlink are to improve efficiency, and downlink is to reduce the impact to blank at a slow speed；It closes
Piston rod 62 continues traveling downwardly after mould, as shown in figure 3, the reaction force that blank 9 generates mold is transmitted to link mechanism, the first toggle link
22 swing out, and articulated shaft 23 is caused to enter in the axial trough 43 of the second toggle link 41, and link mechanism and the second toggle link 41 form song
Elbow link mechanism, the first toggle link 22 and the second toggle link 41 form toggle mechanism；Piston rod 62 continues traveling downwardly, as shown in figure 4, passing through
Connecting rod 21 forces the toggle mechanism after zoarium gradually to tend to stretch, and to the blank slow pressurization in die cavity, becomes blank elder generation jumping-up
Annular gap of the shape again gradually between cavity plate 54 and type core 53 flows downward, and ultimately forms tubular extrusion, in the process, mould
The downstream rate of the upper mold 51 of tool is far below the downstream rate of piston rod 62, and speed is from fast to slow, is very suitable to wheel hub forming
The requirement of technique.
It is formed after tubular extrusion, hydraulic press backhaul, under backhaul pulling force effect, the first toggle link 22 and connecting rod 21 are formed
Link mechanism inwardly swing reset, this process be divided into again the toggle means flex stage and from the second toggle link 41 reset complete first
The articulated shaft 23 of toggle link 22 is separated with the axial trough 43 of the second toggle link 41, the stage resetted completely to connecting rod 21, the first toggle link 22,
In, the slow release of previous stage upper mold 51 simultaneously separates, the latter half mold pause motion；It stops swinging after link mechanism reset
And there is axial tension effect, hydraulic press continues backhaul, drives upper mold 51 to continue fast uplink by link mechanism；Hydraulic press returns
Cheng Hou, jacking cylinder of hydraulic press work, by backing-out punch 52 by extrusion the ejection device from cavity plate 54, complete a wheel hub at
Shape；Hereafter, liftout tank backhaul, and above-mentioned movement is repeated, it is shaped next time.Before axial trough 43 is separated with articulated shaft 23, on
The uplink at a slow speed of mould 51, for stress-relief process at a slow speed；After link mechanism resets, link mechanism drives upper mold 51 quickly to return with hydraulic press
Journey.
State shown in Fig. 4, crank connecting rod mechanism is close to extreme position, at this point, the first toggle link 22, the second toggle link 41
Axis has biggish axial stiffness close to being overlapped, and center line (axis) and the molding direction of motion of connecting rod 21 have biggish
Angle (state close to the vertical shape) has very big axial amplification to the pressure of hydraulic cylinder；The reinforcing direction of connecting rod 21 and song
The axis of elbow mechanism can stretch crank connecting rod mechanism close to vertically with maximum pressure effect；The axis of toggle mechanism
There is lesser angle with hydraulic press force direction, there is big component in mold Impact direction.Therefore, the crank connecting rod machine
Structure has biggish supercharging effect, is pressurized multiple up to decades of times.
In hydraulic press return stroke, since link mechanism and the second toggle link 41 can pass through clamping structure and hinged fit structure
It realizes separation, so that the molding pressure exerting arrangement for driving upper mold 51 is separated with the second toggle link 41 on central sill 72, to make mold
Die sinking space not by the travel limit of crank connecting rod mechanism, achieve the purpose that increase die sinking space, for mentioning for large-size workpiece
For sufficiently large operating space.It solves in the prior art that the hydraulic press stroke with crank connecting rod mechanism is smaller, can not have foot
The problem of enough big operating spaces.
It should be noted that each mating surface of crank connecting rod mechanism is clearance fit in the present embodiment, there is reliable profit
It is sliding.It is transmitted outward to reduce 9 heat of blank in mold, is additionally provided with heat insulation structural on the fixator 31 in the present embodiment.
Hydraulic tools of the invention have the advantage that
1) due to using separable crank connecting rod mechanism, the impulse stroke of hydraulic press is larger, not by crank connecting rod mechanism
Constraint, bigger operating space is provided for extrusion molding；
2) hydraulic press has the characteristics that fast downlink, slow pressurization, at a slow speed release and quick return, is conducive to improve production effect
Rate and energy-saving；
3) pressurization is realized by crank connecting rod mechanism, there is very big pressurization, lesser hydraulic device, production can be used
The extruded product of larger size.
Hydraulic press in the present embodiment is shaped for hub extrusion, and in other embodiments, which can also be used in into
The extrusion of the similar big pressure of shape, small crush stroke, can be used for the open molds such as liquid forging, low pressure casting stroke it is big,
The occasion that pressure stroke is short and mold clamping force is very big.
In the present embodiment, articulated shaft 23 constitutes mechanism articulated shaft, and the first toggle link 22, the second toggle link 41 and connecting rod 21 are hinged
On articulated shaft 23, realize that connecting rod 21 and the hinge axes of the first toggle link 22 are consistent with the axis of mechanism articulated shaft；In other realities
It applies in example, settable two articulated shafts, respectively the first articulated shaft and the second articulated shaft on the first toggle link, wherein the first articulated shaft
Hingedly cooperate with connecting rod, the second articulated shaft is used for, second toggle link composition hinge hinged with the second toggle link when piston rod is oriented to and molds
Connect fit structure.
In the present embodiment, arc retaining groove 24 and spacer pin 25 constitute and swing position limiting structure；It in other embodiments, can also be
Spacer pin is added on fixator, by spacer pin to come the initial position that limits the first toggle link, by pulling force, connecting rod
And first toggle link axis between there is certain angle, and can make the first toggle link, connecting rod around the first toggle link and solid when by pressure
The opposite swing of the hinged articulated shaft of device is determined, at this point, spacer pin, which is constituted, swings position limiting structure.
Elastic keeper in the present embodiment is torsional spring, and elastic keeper can also be tension spring, pressure spring in other embodiments
Equal elastic components.It is connected between central sill 72 in the present embodiment and underbeam 73 by lower pull rod 82 and nut 83, passes through screw on nut
83 realize that the distance between central sill 72 and underbeam 73 are adjusted；In other embodiments, frame connecting structure can also be used in rack, this
When, by adjusting the thickness of backing plate, adapt to the closure height of hydraulic press.
In other embodiments, guide post can be set on the holder, at the same on the connectors setting be adapted to guide post lead
Post holes, connector and fixator are realized by guide post and are oriented to；It can also be not provided with heat insulation structural on fixator, and be arranged on mold
Heat insulation structural does not need setting heat insulation structural on fixator when for being cold-pressed；Fixed plate can also be not provided on underbeam, directly will under
Mould is mounted on underbeam.
Claims (8)
1. the hydraulic press with pressurization, characterized in that including rack, rack is equipped with hydraulic cylinder, the piston rod of hydraulic cylinder
On be connected with molding pressure exerting arrangement, the molding pressure exerting arrangement includes connector and fixator, and connector is connect with piston rod,
On the holder, lower die is mounted on the rack for upper mold installation when use, and at least two groups are equipped between the connector and fixator
The link mechanism being arranged symmetrically, the fixator are lifted on the lower section of connector by link mechanism, and link mechanism includes and consolidates
Determine the first hinged toggle link of device and the hinged connecting rod of connector, is hinged between connecting rod and the first toggle link；Mold pressure exerting arrangement
It further include certain for, in the case where link mechanism is by state of tension, guaranteeing to have between the first toggle link being hinged and connecting rod before molding
Angle is without the swing position limiting structure that is straightened；First toggle link is equipped in the articulated position with connecting rod or at articulated position
Hinged fit structure is hinged with the second toggle link in the rack, and elastic keeper is equipped between the second toggle link and rack, so that the
The free end of two toggle links overhangs in setting position, and the free end of the second toggle link is equipped with clamping structure, and the clamping structure is in piston
Bar downlink is connected with the hinged fit structure when molding and forms hinged relationship and make link mechanism and the common structure of the second toggle link
At crank connecting rod mechanism, the clamping structure on the piston rod row when with the hinged fit structure relative separation.
2. the hydraulic press according to claim 1 with pressurization, characterized in that first toggle link is equipped with mechanism
The free end of articulated shaft, second toggle link is equipped with axial trough, and when the first toggle link is swung out, mechanism articulated shaft slides into axial trough
In and form hinged relationship and link mechanism and the second toggle link made to form crank connecting rod mechanism, described in the mechanism articulated shaft is constituted
Hinged fit structure, the axial trough constitute the clamping structure.
3. the hydraulic press according to claim 2 with pressurization, characterized in that the hinge of the connecting rod and the first toggle link
Spindle line is consistent with the axis of mechanism articulated shaft.
4. the hydraulic press according to claim 1 or 2 or 3 with pressurization, characterized in that the connecting rod is equipped with arc
Shape retaining groove, the first toggle link are equipped with spacer pin, and the link mechanism is kept off by pulling force time limit position pin and the side cell wall of arc retaining groove
Only cooperation allows between the first toggle link and connecting rod with certain angle, by the first toggle link when pressure around the articulated shaft with fixator
It swings out, the arc retaining groove and spacer pin constitute the swing position limiting structure.
5. the hydraulic press according to claim 1 or 2 or 3 with pressurization, characterized in that the elastic keeper is
Torsional spring.
6. the hydraulic press according to claim 1 or 2 or 3 with pressurization, characterized in that the connector and rack
Between be oriented to cooperation.
7. the hydraulic press according to claim 1 or 2 or 3 with pressurization, characterized in that the rack includes upper
Beam, central sill and underbeam are equipped with hydraulic cylinder on upper beam, have the through-hole passed through for molding pressure exerting arrangement on central sill, and described second
Toggle link is hinged on the inner sidewall of through-hole.
8. the hydraulic press according to claim 7 with pressurization, characterized in that pass through between the central sill and underbeam
Lower pull rod and the nut being threaded on lower pull rod connection, to be realized by screw on nut to distance between central sill and underbeam
It adjusts.
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| CN201910147188.5A CN109703090B (en) | 2019-02-27 | 2019-02-27 | Hydraulic press with pressure boost effect |
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| CN201910147188.5A CN109703090B (en) | 2019-02-27 | 2019-02-27 | Hydraulic press with pressure boost effect |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202831A (en) * | 2021-04-23 | 2021-08-03 | 河南科技大学 | Hydraulic press with hydraulic pressure booster mechanism |
| CN113305168A (en) * | 2021-04-23 | 2021-08-27 | 河南科技大学 | Hydraulic pressurizing mold locking device for clack mold |
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| FR1447431A (en) * | 1965-06-18 | 1966-07-29 | Ct De Rech S De Pont A Mousson | Advanced mold closing device |
| DE1960948A1 (en) * | 1968-12-05 | 1970-06-25 | Muttart Vincent H | Machine for molding plastics and other compressible materials |
| JPH08267524A (en) * | 1995-03-31 | 1996-10-15 | Ube Ind Ltd | Mold clamping device of injection molder |
| JP2001179749A (en) * | 1999-12-27 | 2001-07-03 | Sato Tekkosho:Kk | Molding die clamping device |
| CN101786133A (en) * | 2010-03-26 | 2010-07-28 | 上海交通大学 | Multi-connecting rod servo press for four-motor parallel drive machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113202831A (en) * | 2021-04-23 | 2021-08-03 | 河南科技大学 | Hydraulic press with hydraulic pressure booster mechanism |
| CN113305168A (en) * | 2021-04-23 | 2021-08-27 | 河南科技大学 | Hydraulic pressurizing mold locking device for clack mold |
| CN113305168B (en) * | 2021-04-23 | 2022-07-26 | 河南科技大学 | Hydraulic pressurizing mold locking device for clack mold |
| CN113202831B (en) * | 2021-04-23 | 2023-09-19 | 河南科技大学 | Hydraulic press with hydraulic pressurizing mechanism |
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| CN109703090B (en) | 2020-07-14 |
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Effective date of registration: 20201224 Address after: 224000 No.8 Fengyang Road, Dafeng District, Yancheng City, Jiangsu Province Patentee after: Jiangsu Zongyi New Material Technology Co.,Ltd. Address before: 471003 No. 48, Xiyuan Road, Jianxi District, Henan, Luoyang Patentee before: HENAN University OF SCIENCE AND TECHNOLOGY |