CN2457386Y - Swing ream rod pressure boost mechanism - Google Patents

Abstract

The utility model relates to a swing hinging rod pressure increasing mechanism. The utility model uses a vane-type swing motor as a driving device and two sets of middle hinging rods served as the pressure increasing mechanism are respectively hinged with each front and back hinging rod. The other end of each front and back hinging rod is respectively hinged with a hinging base manufactured on a fixed plate and a sliding plate. A cylinder body and a rotor of a motor are adopted to generate two moments with equal values to which the front and back hinging rods to increase the pressure. The distribution of acting force is adjusted by confirming the distance of two sets of hinging pins on the sliding plate by load requirements. Thus the effects of energy saving, high efficiency, low power consumption, reasonable power point distribution and the satisfaction of different using requirements are obtained.

Description

The swing ream rod booster body

The utility model relates to a kind of swing ream rod booster body.

Known Hinged bar upercharging mechanism (as the clamping mechanism of injection molding machine) is made up of cylinder drive, front and back toggle and free bearing, and is short because of the skateboarding stroke that the long toggle of its piston motion stroke drives, power consumption is big, force position irrational distribution and can not be used for injection mechanism.

The purpose of this utility model provides that a kind of working stroke is long, energy-conservation, efficient, low power consumption, force position distributes rationally and be applicable to the injection mechanism of injection molding machines such as injection machine and metal die-casting machine and the swing ream rod booster body of clamping mechanism.

This swing ream rod booster body be a kind of before, during and after the toggle structure, it is made drive unit by the blade type rotary actuator and makes in two covers of this booster body respectively hinged forward and backward toggle separately of toggle, and the other end of forward and backward toggle is hinged with the free bearing that is made on fixed plate and the slide plate respectively; Oil pump feed presses P to make the cylinder body and the rotor counterrotating of rotary actuator, the i.e. forward and backward toggle rotation that toggle drives respectively separately in two covers also makes slide plate along the pull bar moving linearly, and the balancing force amplifying mechanism that is made up of the forward and backward toggle that rotary actuator drives realizes supercharging, need determine on the slide plate that by load two cover hinge pins distances come the distribution of corrective action, with reach efficient, low consumption, energy-conservation, the force distributes rationally and satisfy the effect of different usage requirements.

Accompanying drawing (1) and accompanying drawing (2) they are the structural representations of a specific embodiment of the utility model swing ream rod booster body, wherein:

1, fixed plate 2, fork hinge pin 3, fork toggle

4, middle toggle 5, advance, oil exit pipe joint 6, the sealing bearing watt

7, cylinder body 8, sealing supporting ring 9, sliding bearing

10, cylinder toggle 11, cylinder hinge pin 12, slide plate

13, pull bar 14, combination seal supporting member 15, rotor shaft

16, rolling bearing 17, cover plate 18, guide rail

In the present embodiment, referring to accompanying drawing (1) and accompanying drawing (2), be made on fixed plate (1) and the slide plate (12) free bearing respectively by the hinged cylinder toggle of cylinder hinge pin (11) (10) and by the fork hinge pin (2) hinged fork toggles (3), the centre of forward and backward cylinder toggle (10) is with the hinged cylinder body of cylinder hinge pin (11) (7), the centre of forward and backward fork toggle (3) is with the hinged middle toggle (4) of fork hinge pin (2), the toggle that the hinge cover is installed is positioned at the hinge pin middle part, logical oil lubrication between hinge cover and hinge pin, and the hinge pin two ends are fixed with the dovetail bolt; Bear the enough rigidity of high pressure operating mode and improve anufacturability for rotary actuator is had, the bearing blade and the cylinder body of motor cylinder (7) are made into integral body, and the bearing blade of rotor and rotor shaft (15) are made into integral body; The blade of cylinder body (7) and rotor radial seal and are made as radially auxiliary hydrostatic support with sealing bearing watt (6), rotor shaft (15) seals and does axial aiding support along the oil pocket sideshake by sealing supporting ring (8), the blade of rotor (15) is divided into airtight A chamber and B chamber with the oil pocket of cylinder body (7) with combination seal supporting member (14), the oil-containing plain thrust bearing (9) of supporting cylinder body (7) is supported on the rotor both sides of rotor shaft (15), and its bearing is with the backhaul oil lubrication; Oil-feed, oil exit pipe joint (5) place middle part and logical respectively two the A chambeies of its oil circuit or two B chambeies of toggle (4), the rolling bearing (16) of supporting rotor axle (15) places the outside of toggle (4) and is fixed by end casing (17), and the shaft axis that rolling bearing (16) moves on the guide rail that is parallel to pull bar (13) (18) with the rotor shaft (15) that guarantees motor moves on the same plane of pull bar (13) center line; The pull bar (13) that is fixed in fixed plate (1) pass slide plate (12) guide pin bushing so that slide plate (12) move along pull bar (13) straight line.

This swing ream rod booster body can be according to distribution and the needs of load N, the distance that changes the cylinder hinge pin (11) on the slide plate (12) and pitch hinge pin (2), and the distribution that promptly changes the horizontal thrust point of action is to meet usage requirement.

Referring to accompanying drawing (1) and accompanying drawing (2), oil pump enters two A chambeies of motor simultaneously through inlet connector (5) for pressure oil, two B chambeies are simultaneously from oil exit pipe joint (5) oil return, oil pressure P makes cylinder body (7) be rotated counterclockwise and drive forward and backward cylinder toggle (10) rotation, oil pressure P make simultaneously rotor shaft (15) drive in toggle (4) turn clockwise and drive forward and backward fork toggle (3) rotation, thereby slide plate (12) is moved along pull bar (13) straight line.

Mobile starting point with booster body is β _oPoint, mobile terminal point are β _kPoint, then correspondingly, its displacement distance Δ L=2L ₁[COS (β _k+ Ф _k)-COS (β _o+ Ф _o)]+2L ₂(COS θ _k-COS θ _o).

In the formula: θ=α-Ф, L ₁For the O point to the E dot spacing from, L ₂For the E point to the D dot spacing from.

The moment M that produces of cylinder body vane stress then ₁=NL _oΔ PS.In the formula: S was a diameter oil pocket sectional area, and N is the number of blade, N=1, and 2,3, the cylinder body number of blade is 2 among the figure, Δ P is that motor advances oil extraction pressure reduction, L _oFor the O point of rotor shaft (15) to the geometrical center dot spacing of S from.

M ₁Act on the power R of the hinge pin central point (being the E point) of cylinder body (7) ₁=M ₁/ L ₁

In like manner, the moment M of the stressed generation of rotor blade ₂=NL _oΔ PS, M ₂Act on the power R of the hinge pin central point of the middle toggle (4) that rotor shaft (15) drives ₂=M ₂/ L ₂

R ₁Act on the horizontal thrust F of the central point (being the D point) of the cylinder hinge pin (11) of slide plate (12) ₁And R ₂Act on the horizontal thrust F of central point of the fork hinge pin (2) of slide plate (12) ₂For: $F_1=R_1\frac{{\mathrm{Cos\&theta;}}_1}{\mathrm{Sin}(\mathrm{\&alpha;}+\mathrm{\&beta;})}$ ${\mathrm{<figure-callout\; id="2"\; label="F"\; filenames="Y0121327300061.png,Y0121327300071.png"\; state="\{\{state\}\}">F</figure-callout>}}_2={\mathrm{<figure-callout\; id="2"\; label="R"\; filenames="Y0121327300061.png,Y0121327300071.png"\; state="\{\{state\}\}">R</figure-callout>}}_2\frac{\mathrm{Cos}{\mathrm{\&theta;}}_2}{\mathrm{Sin}(\mathrm{\&alpha;}+\mathrm{\&beta;})}$

So this swing ream rod booster body acts on the thrust F=F of slide plate (12) ₁+ F ₂=2F ₁, and along with (α, more and more littler its thrust β) is increasing.

This booster body can be installed in series on the line of the same centre of motion to increase the slide plate working stroke, also can be according to using needs to be installed in parallel with multi-form.

The explanation of the utility model model machine trial effect, this swing ream rod booster body is used for the injection mechanism of plastic-injection moulding machine, its Oil pump electrical machinery be configured to not improve type about 60% (this model machine is configured to 11KW, domestic and international similar type is configured to 18.5KW to 22KW), its injection stroke lengthening about 20% is by the torque M of cylinder body (7) ₁And the torque M of rotor shaft (15) ₂The horizontal thrust F that produces ₁And F ₂Finger is in the stress area of the power amplifier of supporting injection screw; When β=50 °, the injection pressure of injection screw is 1620kgf/cm ², the travelling speed of sliding utmost point this moment (12) is 8.3M/min, makes its injection rate for not improving about 1.5 times of type, during β=30 °, injection pressure is 2060kgf/cm ², during β=15 °, injection pressure can reach 3600kgf/cm ², make the pressure of injection moulding pressurize too big, then oil pressure P is turned down to adaptive value.The test job oil pressure of this swing ream rod booster body is 20MPa; its motor be 36MPa radially with the design rated pressure of axial powder metallurgy support seal and combination support Sealing and bearing blade; (as this model machine Oil pump electrical machinery is configured to 15KW; then the maximum travelling speed of the screw rod of injection mechanism can reach 11M/min, and the maximum shifting formwork speed of clamping mechanism can reach 36M/min).When this swing ream rod booster body is used for the clamping mechanism of injection molding machine, its F ₁And F ₂Finger is in the mould pin stress area of supporting mould; avoided the force position of existing machinery-hydraulic lock mold mechanism to cross far away and problems such as slide plate distortion fracture that produce apart from the mould supporting point; no oil cylinder stretch out and plate under the prerequisite of mechanism's shorten length 10%; its opening stroke strengthens 10%～15%; mould opening force increases about 35%, and maximum shifting formwork speed is 26M～28M/min.Obviously reach energy-conservation, efficient, low power consumption, the force has distributed rationally and satisfied the effect of different usage requirements.

Claims (3)

1, a kind of swing ream rod booster body, it is made up of drive unit, toggle etc., it is characterized in that by rotary actuator make drive unit and do this booster body two the cover in toggle, be made on fixed plate (1) and the slide plate (12) free bearing respectively by the hinged cylinder toggle of cylinder hinge pin (11) (10) and by the fork hinge pin (2) hinged fork toggles (3), with the hinged cylinder body of cylinder hinge pin (11) (7), forward and backward fork toggle (3) is middle with the hinged middle toggle (4) of fork hinge pin (2) in the middle of the forward and backward cylinder toggle (10); Bear the enough rigidity of high pressure operating mode and improve processibility for rotary actuator is had, the bearing blade and the cylinder body of motor cylinder (7) are made into integral body, and the bearing blade of rotor and rotor shaft (15) are made into integral body; The blade of cylinder body (7) and rotor radial are with sealing bearing watt (6) sealing and make radially auxiliary hydrostatic support, rotor shaft (15) seals and does axial aiding support along the oil pocket sideshake by sealing supporting ring (8), the blade of rotor shaft (15) is divided into airtight A chamber and B chamber with the oil pocket of cylinder body (7) with combination seal supporting member (14), the plain thrust bearing (9) of supporting cylinder body (7) is supported on the rotor both sides of rotor shaft (15), sliding bearing (9) has the sealing of anti-draining envelope by backhaul oil lubrication and its outside, the middle toggle (4) that rotates synchronously with rotor shaft (15) is installed outside cylinder body (7) both sides, and middle toggle (4) and rotor shaft (15) are with the flat key power transmission.

2, swing ream rod booster body according to claim 1, the pull bar (13) that it is characterized in that being fixed in fixed plate (1) passes the guide pin bushing of slide plate (12) so that slide plate (12) moves along pull bar (13) straight line, and placing the rolling bearing (16) of left and right toggle (4) outside and supporting rotor axle (15) to be bearing in the guide rail (18) that is parallel to pull bar (13), to go up linear movement consistent with slide plate (12) centre of motion to guarantee rotary actuator.

3, swing ream rod booster body according to claim 1 is characterized in that determining that according to the distribution of load N the distance that slide plate (12) is gone up assembling cylinder hinge pin (11) and pitched the free bearing of hinge pin (2) adjusts horizontal thrust F ₁And F ₂The distribution of point of action is to meet usage requirement.

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