CN1026672C - Hydraulic bending shearing, cutting and pressing machines and their combined unit with upward drive - Google Patents

Abstract

The invention relates to a hydraulic bending machine of upper transmission, a plate shearing machine, a paper cutting machine and a pressure machine and a combined machine thereof, which belongs to universal machines in the field of operation. The upper transmission slide block of the machine is provided with an automatic control shaft, and thus, the oil amount of a reversing valve is controlled to be synchronized with that of an oil cylinder. The machines have the characteristics of simple structure, convenient use, reliable performance, low cost and convenient production, and is capable of bearing eccentric loads.

Description

Hydraulic bending shearing, cutting and pressing machines and their combined unit with upward drive

The present invention relates to the slide block that a kind of forcing press is used, hydraulic drive bender particularly, the top shoe on plate shearing machine, lath cutter, the forcing press, and control device are the devices of the general-purpose machinery in operation field.

The J18-100 template material bending press that existing Jiamusi radio-specific instrument factory is produced, its operation principle and structure are: counterdie is motionless, patrix moves up and down together with slide block, it is the usefulness that slide block moves up and down that two oil cylinders are arranged, two double piston-rod synchronous fuel tanks, totally four oil cylinders are installed between two areas and slide block wait among the big steel plate approximately.Location for the slide block bottom dead centre, about respectively establish totally 14 groups of the total swivel nut of a sleeve gasket block mechanism, worm screw, worm gear, gear, screw rod, small size motor, travel switch, displays etc., it should not monolateral load, and during as the monolateral load of needs, its load pressure tonnage is not more than 1/4 of nominal pressure, the plate width is greater than 500 millimeters, and must carry out simultaneously on two limits, otherwise work quality obviously descends, and the slide block and the workbench depth of parallelism are also influential, above-mentioned bender mechanism complexity, unsuitable monolateral load.

The purpose of this invention is to provide last driving block device that a kind of hydraulic press uses to improve the performance of bender, make it can eccentric load, can adjust the dead point of slide block impulse stroke easily, easy to operate, mechanism is simple, low cost of manufacture is convenient to produce.Or improve hydraulic plate shears, paper cutter, forcing press and bender merging machine in interior they.

Content of the present invention is: go up at slide block [36] corner of handwheel screw [4] with restriction automatic control axle [33] is installed, the direction approximate vertical of the axis of automatic control axle and slide block movement, the bearing [1] at axle two ends, the two ends that [35] are installed in slide block.

Each firmly connects a unidirectional rocking bar [3], the center line that waves angle of [34] two rocking bars and the direction approximate vertical of slide block movement automatic control axle two ends.

The end of two a rocking bars connecting rod of each loose joint [7], [30].The direction almost parallel of the axis of two connecting rods and slide block movement.

The force of the other end of two a connecting rods lever of each loose joint [17], [23].The direction approximate vertical of the axis of two levers and slide block movement, the force fulcrum line of two levers and emphasis fulcrum line, the angle of two lines have hand to twist screw thread fine setting [9], the big accent of spanner screw thread [26] is adjustable.

The emphasis of two levers is respectively controlled the reversing valve core of a reversal valve [19], [25].A damper of each loose joint [8], [28] on two levers, two dampers are shaken separately lever and are not allowed too flexibly, and spring action is arranged in the damper, the emphasis of lever toward pressing down.

Two reversal valves respectively control the oily path, either large or small or cut out or flow backwards of an oil cylinder [5], [32], and the action that makes two oil cylinders is near synchronously, and slide block is near translation.

Now in conjunction with the accompanying drawings operating process and the mechanism action of inventing is described below:

(1), no-load running: the oily inspiration oil pump that motor [15] drives oil pump [14] fuel tank [10] flows back into fuel tank through solenoid directional control valve [16] P, the O mouth of outage.

(2), last driving block [36] idle stroke: floor push (does not have in the accompanying drawing and illustrates) on earth, solenoid directional control valve [16] lower electromagnet energising A, the O mouth is logical, the deadweight of slide block makes oil cylinder [5], [32] oil of cavity of resorption produces oil pressure, the oil of cavity of resorption is through reversal valve [19], [25] A, O mouth (the damper of reversing valve core [8], [28] Nei spring action often is a subsidence position), half-duplex channel [27] in integrated package (iron block of each valve is installed), [29], through choke valve [21], through solenoid directional control valve A, the O mouth returns into fuel tank [10], it is that the slide block decrease speed is slow that choke valve is turned the oil mass of passing through down, transferring the oil mass of passing through greatly is that the slide block decrease speed is fast, the pressure oil of oil cylinder cavity of resorption flows into hydraulic control one-way valve [6], [31] hydraulic control mouth, then the inlet/outlet of hydraulic control one-way valve communicates, because of piston descends, the oil cylinder epicoele sucks the oil in the fuel tank.

(3) going up driving block [36] is stopping in the middle of the stroke: under the floor push of (two) is stepped on earth situation, foot pedal is raised slightly, lower contact outage in the switch, and under the situation that upper contact also cuts off the power supply, two power-on and power-off magnet of solenoid directional control valve [16] all cut off the power supply, then A, O mouth are obstructed, and the oil row of oil cylinder [5], [32] cavity of resorption does not go out, and slide block can stop at any position in the stroke.

(4); last driving block [36] impulse stroke: foot-operated floor push on earth; lower contact energising in the switch; the lower electromagnet energising of solenoid directional control valve [16]; recover the oil circuit of (two) idle stroke; slide block continues idle stroke and moves downward; hit working substance up to patrix or blade [39]; when not overcoming the resistance that hits working substance by the deadweight of slide block; oil cylinder [5] then; [32] the cavity of resorption oil pressure that deadweight produces by slide block has disappeared; hydraulic control one-way valve [6]; [31] hydraulic control mouth does not have pressure oil; then the gateway of hydraulic control one-way valve is obstructed; coming of oil pump this moment [14] is oily through solenoid directional control valve P; the B mouth; half-duplex channel in integrated package [22]; [24]; through reversal valve [19]; [25] P; (reversing valve core has damper [8] to the B mouth; [28] the inner spring effect often is subsidence position) enter epicoele to oil cylinder P mouth separately; piston is depressed; slide block produces pressure and works; the oil of oil cylinder cavity of resorption is through reversal valve A; the O mouth; half-duplex channel in integrated package [27]; [29]; through choke valve [21], through solenoid directional control valve A; O mouth oil sump tank [10].The hydraulic coupling of work can show from Pressure gauge [13], and pressure meter switch [12] can be adjusted and make that gauge hand is unlikely beats, and overflow valve [11] spills out the oil spill above working pressure.

(5), go up the parallel automatic control situation of driving block [36] during eccentric load: establish left avertence heart load, then a slide block left side is high right low, the automatic control axle [33] that is installed on the driving block is also left high right low, the high right rocking bar of the also left rocking bar in left rocker [3], [34] that firmly is connected automatic control axle two ends is low, right rocking bar [34] has overcome damper [28] inner spring elastic force by connecting rod [30] lever [23] reversing valve core of reversal valve [25] has been pulled up, P, B mouth reduce to cause fuel cut-off and give right oil cylinder [32], and two oil cylinders is synchronous about keeping with this principle.Slide block left and right sides difference of height calculates: establishing with 63 tons of machines is example, the spool of reversal valve pulls up 4 millimeters then P, B mouths, A, O mouth oil flux are by extremely sealing of standard-sized sheet, lever force fulcrum is 1: 7 apart from the ratio with emphasis fulcrum distance, 4/7=0.57 millimeter difference of height, the distance of difference of height be about 1350 millimeters of the distances of two connecting rods [7], [30], the left and right sides of slide block is wide to be 2.5 meters, the end difference of height is 1.1 millimeters promptly, angle at the force of lever fulcrum line and emphasis fulcrum line has hand to twist the size that screw thread fine setting [9] can be adjusted angle, eliminates this mistake of 1.1 millimeters.Also beating of lever eliminated in a damper of each loose joint [8], [28] on two levers.

(6), the situation of any angle of bender crop: the counterdie [37] of an angle of 90 degrees on workbench [38] is gone up the working substance of bending greater than any angle of 90 degree, hand rotates the handwheel screw [4] before the machine, allow screw rod limit the corner of automatic control axle [33], when making patrix [39] not arrive the minimum point of counterdie, promptly not bending before an angle of 90 degrees, what handwheel screw touched the automatic control axle bumps iron [2], the stall of automatic control axle, by rocking bar [3], [34] connecting rod [7], [30] lever [17], [23] effect is reversal valve [19], [25] reversing valve core pulls up, two reversal valve P separately, the B mouth, A, the O mouth is obstructed, then going up driving block [36] stops down to move, rotate the degree of depth difference of handwheel screw, can roll over the angle of any kind of different sizes.When the knuckle at working substance two ends had the difference of size, can adjust the stubborn screw thread fine setting of big accent of spanner screw thread [26] or hand [9] was recoverable.

(7), the backhaul of last driving block [36]: switch is stepped in not step of pin, upper contact energising in the switch, the last electromagnet energising of solenoid directional control valve [16], P, the A mouth is logical, coming of oil pump [14] is oily through P, the A mouth, half-duplex channel in integrated package [18], [20] to oil cylinder [5], [32] O mouth separately presses piston, pressure oil also enters hydraulic control one-way valve [6], [31] hydraulic control mouth, the hydraulic control one-way valve gateway is logical, the oil of oil cylinder epicoele is through hydraulic control one-way valve oil sump tank [10], and slide block thereby backhaul, backhaul hit travel switch (do not have in the accompanying drawing and illustrate) switch to terminal point and cut off the power supply, the last electromagnet outage of solenoid directional control valve, P, the O mouth is logical, and the A mouth is obstructed, and coming of oil pump is oily through P, O mouth oil sump tank, two oil cylinder cavity of resorption oil get nowhere, and slide block stops at the backhaul terminal point.

Claims (7)

1, the last driving block device that a kind of hydraulic press is used, it is characterized in that going up the corner of installation handwheel screw [4] with restriction automatic control axle [33] at last driving block [36], each firmly connects a unidirectional rocking bar [3] automatic control axle two ends, [34], the end of two a rocking bars connecting rod of each loose joint [7], [30], the other end of two a connecting rods lever of each loose joint [17], [23] force, the emphasis of two levers is respectively controlled a reversal valve [19], [25] reversing valve core, two reversal valves are respectively controlled an oil cylinder [5], [32] oily path, either large or small or close or flow backwards, make two oil cylinder strokes near synchronously.

2,, it is characterized in that axis or the approximate vertical vertical of described automatic control axle, the bearing [1] at axle two ends, the two ends that [35] are installed in slide block with the direction of slide block movement by the last driving block device of claim 1.

3,, it is characterized in that the direction approximate vertical of the center line that waves angle and the slide block movement of described rocking bar by the last driving block device of claim 1.

4,, it is characterized in that the axis and the slide block movement direction almost parallel of described two connecting rods by the last driving block device of claim 1.

5,, it is characterized in that the approximate vertical of the axis and the slide block movement of described two levers by the last driving block device of claim 1.

6, by the last driving block device of claim 1, it is characterized in that the force fulcrum line and the emphasis fulcrum line of described two levers, the angle of two lines has hand to twist screw thread fine setting [9], the big accent of spanner screw thread [26] is adjustable.

7, by the last driving block device of claim 1, it is characterized in that a damper of each loose joint [8], [28] on described two levers, two dampers shake separately lever and do not allow too flexibly, and the effect of damper inner spring presses down the emphasis of lever is past.

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