Ordinary press ball head connecting rod Shi Mogao adjusting device as shown in Figure 1, entablature 1 and base 8 are fixed on one by column 7, connecting rod 3 is threaded with ball screw 4, the bulb of ball screw 4 flexibly connects by spherical gland 5 and slide block 6, make the flat department of hexagonal at the close end position of ball screw 4, can drive slide block by the spanner rotary screw rod and move up and down the adjustment of realization forcing press height of packing compact.This kind structure exists bar linkage structure complexity,, shortcoming such as bulb region of interest easy to wear too high to the requirement on machining accuracy of parts.
Common preset hydro-cylinder type four column press height of packing compact adjusting device as shown in Figure 2, its base 8, column 7, adjusting nut 11, entablature 1, piston rod 10 and overhead oil cylinder 9 are by hydraulic system and be threadedly connected to one, entablature 1 fixed crankshaft 2, bent axle 2 is connected with slide block 6 by connecting rod 3, column 7 upper ends are connected with the piston rod 10 of oil cylinder 9, entablature 1 top is fixed on the oil cylinder 9, and the middle part is enclosed within on the column 7, and the bottom is spacing by the adjusting nut 11 of spiral on column 7.When height of packing compact is adjusted, at first promote entablature 1, drive adjusting nut 11 rotations by the nut rotary drive mechanism that is installed in entablature 1 then, the problem that relatively moves of the driving mechanism that the design of this kind height of packing compact adjusting device the time must be considered adjusting nut 11 and adjusting nut 11 itself increases the complexity that designs.Column 7 bears big load with adjusting nut 11 threaded connection places simultaneously, and thread material and screw thread Technology for Heating Processing seriously undermine the intensity of threaded connection place because of being subjected to the restriction of column 7 materials and structure, influence forcing press operating accuracy and life-span.
Summary of the invention
Technical problem to be solved by this invention is to overcome the above-mentioned defective of prior art and a kind of preset hydro-cylinder type four column press is provided, and makes that its mode transfer is convenient, nut thread bonding strength and precision be higher, guarantees the punching press high accuracy of forcing press and uses the long-life.
A kind of preset hydro-cylinder type four column press, its base and the fixing framework that constitutes forcing press of column all around, fixed crankshaft on the entablature, bent axle is connected with slide block by connecting rod, working plate is set on the base, place counterdie on the working plate, corresponding with the patrix on being arranged on slide block, described column upper end is connected with the piston rod of oil cylinder, and entablature top is fixed on the cylinder body, and the middle part is enclosed within on the column, be characterised in that: described column puts swivel nut, swivel nut is threaded with adjusting nut, and by trim ring swivel nut and entablature bottom is fixed, and adjusting nut is by the nut drive mechanism.
Compared with prior art, the invention has the advantages that:
By swivel nut is set, being threaded of column and adjusting nut is separated, need not set up screw thread on the column, swivel nut and column can be distinguished selection and processing like this, the material of swivel nut and processing can be better, thereby conveniently and at low cost improve be threaded intensity and precision, the service life of correspondingly improving screw thread, the punching press high accuracy of assurance forcing press and use long-life.
Also because adjusting nut and swivel nut can be followed the rising of entablature easily, make that the driving mechanism of adjusting nut and adjusting nut keeps synchronous all the time when needing to adjust mold height on short transverse, greatly simplified the driving mechanism of adjusting nut.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
As shown in Figure 3, put a swivel nut 13 at preset hydro-cylinder type four column press column 7 middle parts, and by feather key 12 guiding swivel nuts 13, swivel nut 13 is threaded with adjusting nut 11, and makes adjusting nut 11 and swivel nut 13 catch up with crossbeam 1 maintenance lifting up and down synchronously by trim ring 14.When overhead oil cylinder 9 lifts entablature 1 to certain altitude, by nut driving mechanism rotation adjusting nut 11, swivel nut 13 is done at the guiding lower edge of guide pillar key 12 column face to slide up and down, when suitable distance is adjusted in swivel nut 13 bottom surfaces and entablature 1 bottom surface, stop adjusting nut 11,, withstand the column face up to swivel nut 13 bottom surfaces by overhead oil cylinder 9 hydraulic action decline entablatures 1, and hydraulic pressure pins height of packing compact adjustment end.
Above-mentioned nut driving mechanism specifically has following four technical schemes:
1. as shown in Figure 4, the nut driving mechanism is single chain drive-belt nut driving mechanism, it comprises motor 16, drive sprocket 17, active chain 15, chain 18, drive sprocket 17 links to each other by active chain 15 with adjusting nut 11, chain 18 links to each other with four adjusting nuts 11, drive drive sprocket 17 by motor 16, through active chain 15 drive sprocket adjusting nuts 11, driving four adjusting nuts 11 on the column by this adjusting nut 11 together through chain 18 again rotates, thereby the distance between the change upper and lower mould realizes the height of packing compact adjusting.
2. as shown in Figure 5, the nut driving mechanism is two chain drive-belt nut driving mechanisms.When the forcing press type was big, single chain drive-belt was long, and the degree of regulation of adjusting nut 11 can descend, and the punching precision of forcing press also can descend thus.For guaranteeing precision, also make things convenient for simultaneously the independent regulation of each adjusting nut, adopt two chain drive-belt nut drive mechanism adjusting nuts, it comprises two groups of driving mechanisms, every group of driving mechanism comprises that motor 16, drive sprocket 17, active chain 15, motor 16 drive drive sprockets 17, drive sprocket 17 links to each other with an adjusting nut 11 by an active chain 15 respectively, drive two compound adjusting nuts 11 of sprocket wheel by two chains 15 simultaneously by a motor 16, thereby the distance between the change upper and lower mould realizes the height of packing compact adjusting.
In the time will adjusting four nuts, 11 initial position height unanimity, chain drive Shi Mogao adjusting device can be unloaded lower chain easily, and manually each nut of rotation is loaded onto chain to certain altitude separately.Chain drive Shi Mogao adjusting device nut height is initially adjusted precision and limited by teeth number of sprocket.
3. as shown in Figure 6, the nut driving mechanism is single worm and gear nut driving mechanism that drives, it comprises motor 16, gear drive group unit 22, bevel gear commutation group unit 20, worm-and-wheel gear 19, adjusting nut 11, shaft coupling 21, motor 16 links to each other by gear drive group unit 22, after changing transmission direction, bevel gear commutation group unit 20 links to each other again, again by worm-and-wheel gear 19 and adjusting nut 11 engagements with worm-and-wheel gear 19.By drive motors 16, gear drive group unit 22, waist type slot type shaft coupling 21, bevel gear commutation group unit 20, worm-and-wheel gear 19 the motor-driven torque drive is arrived the compound adjusting nut 11 of worm gear, drive adjusting nut 11 rotations, thereby the distance between the change upper and lower mould realizes the height of packing compact adjusting.
The adjustment precision of above-mentioned its single nut of worm and gear nut driving mechanism is subjected to the restriction of teeth number of sprocket unlike the chain transmission, so Comparatively speaking its nut adjustment precision is higher.
The mode of above-mentioned its connecting axle of shaft coupling is a waist type slot type, and promptly the connecting hole of mounting flange is a mounting hole, can adjust the position of each nut meticulousr and conveniently and independently, thereby guarantees the higher parallel accuracy of forcing press.
4. as shown in Figure 7, the nut driving mechanism is two worm and gear nut driving mechanisms that drive.On the basis of Fig. 6, increase a drive motors, and omission bevel gear commutation group unit 20, directly drive worm-and-wheel gear by gear drive group unit 22, by two drive motors through gear drive group unit 22, directly drive worm-and-wheel gear 19 by waist type slot type shaft coupling 21 torque drive is arrived worm gear compound nut 11, thereby change the distance between upper and lower mould, realize the height of packing compact adjustment, both improved degree of regulation, again adjusting nut separately.
In the time will adjusting four nuts, 11 initial position height unanimity, the high adjusting device of Worm-gear type mould can conveniently be separated shaft coupling 21, rotates each worm screw certain angle, makes four to adjust nut 11 height and position unanimities, retightens shaft coupling 21 again.Because adopt waist type slot type shaft coupling, its anglec of rotation was unrestricted when worm screw was adjusted, four nuts are initially adjusted precision, and to compare chain drive Shi Mogao governor motion higher.