CN104669657B - A kind of forcing press - Google PatentsA kind of forcing press Download PDF
- Publication number
- CN104669657B CN104669657B CN201510054963.4A CN201510054963A CN104669657B CN 104669657 B CN104669657 B CN 104669657B CN 201510054963 A CN201510054963 A CN 201510054963A CN 104669657 B CN104669657 B CN 104669657B
- Prior art keywords
- Prior art date
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 51
- 239000003570 air Substances 0.000 claims description 14
- 230000001050 lubricating Effects 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 9
- 239000011257 shell materials Substances 0.000 claims description 9
- 239000010720 hydraulic oils Substances 0.000 claims description 7
- 230000002093 peripheral Effects 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 4
- 239000007789 gases Substances 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims 1
- 238000005303 weighing Methods 0.000 claims 1
- 206010043431 Thinking abnormal Diseases 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 241001646071 Prioneris Species 0.000 description 3
- 238000005516 engineering processes Methods 0.000 description 3
- 239000003921 oils Substances 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000003139 buffering Effects 0.000 description 2
- 239000007788 liquids Substances 0.000 description 2
- 239000010687 lubricating oils Substances 0.000 description 2
- 208000002925 Dental Caries Diseases 0.000 description 1
- 241000237858 Gastropoda Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001914 calming Effects 0.000 description 1
- 238000006243 chemical reactions Methods 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 238000005755 formation reactions Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/06—Platens or press rams
- B30B15/068—Drive connections, e.g. pivotal
The invention belongs to press technologies field, it is related to a kind of forcing press.
Crank press is a kind of the most frequently used cold stamping equipment, the workbench as cold punching die.The letter of its structure It is single, it is easy to use.By the difference of lathe bed structure form, crank press can be divided into open type crank press or straight-side crank pressure Machine；Can be divided into one point press or multipoint pressure machine by the difference of drive link number；Being one or two by sliding block number can divide It is single action press or double action press.
Chinese patent CN1621220A discloses a kind of open type press with fixed bench, and it is by body parts, clutch part, cunning Block part, compensating cylinder part, cam sender, Pneumatic pipe, lubricating component etc. are constituted.Wherein, the transmission of the clutch part by Including the multi-connecting-rod mechanism realization that power transmission shaft, gear wheel, two connecting rods, eccentric bushing, bent axles are constituted.Bias is set on gear wheel Center is simultaneously fixed on lathe, bent axle one end be connected with second connecting rod one end through eccentric bushing and be fixed to one another it is not rotatable, and There is certain eccentric throw at crankshaft center and gear wheel center, and first connecting rod one end is connected with gear wheel end face, its other end and second The connecting rod other end is connected.
Chinese patent CN203752547U discloses a kind of forcing press, including frame, bent axle, connecting rod, sliding block and saw tooth, bent Axle axle is connected in frame, and crank rotation drive mechanism is provided with frame, and connecting rod is socketed on bent axle, is set between bent axle and connecting rod Bearing shell is equipped with, saw tooth is connected with sliding block, feature is to be provided with to be converted to the circular motion of connecting rod between connecting rod and saw tooth The movement conversion mechanism of lower linear motion.
The slide block assembly length adjustment that above-mentioned forcing press is set is constant, and balanced component sets unreasonable, does not play steady Fixed effect, lathe is easily damaged mould and lathe when overloading.
The content of the invention
The purpose of the present invention is directed to existing technology and there is above mentioned problem, it is proposed that a kind of easy to adjust, good stability, Forcing press with overload protection.
The purpose of the present invention can be realized by following technical proposal：A kind of forcing press, including fuselage, in fuselage Clutch pack, transmission component and slide block assembly, power motor is installed on the fuselage, the power motor band is connected to Clutch pack, is provided with line shaft on the clutch pack, the power is pivotally connected to transmission component, the transmission component On be provided with bent axle, it is characterised in that bascule is also equipped with the fuselage, the bascule is provided with connecting seat, institute State that connecting seat is connected to slide block assembly and slide block assembly and bascule set up separately in bent axle both sides, the slide block assembly includes connecting rod And slide body, the connecting rod is set on bent axle and slide body is done straight reciprocating motion along fuselage under crank rotation.
In a kind of above-mentioned forcing press, the bascule includes cylinder, the piston body in cylinder and connection On the piston body and stretch out the piston rod of cylinder, the connecting seat is installed on the piston rod, the cylinder connected with air accumulator and Gases at high pressure can be by the into or out cylinder of air accumulator.
In a kind of above-mentioned forcing press, the upper cylinder half that the cylinder includes cylinder body, is respectively fixedly connected with and is sealed in cylinder body two ends Lid and lower cylinder cap, the upper cylinder cover is connected on fuselage, and the piston rod is through piston body and is locked with fixing nut, it is described on Through hole is offered on cylinder cap, the fixing nut can insert through hole and make piston body against to upper cylinder cover, and the piston rod is passed through Lower cylinder cap simultaneously installs connecting seat.
In a kind of above-mentioned forcing press, piston hole is offered on the lower cylinder cap, sealing is installed in the piston hole Block, is provided with rubber seal on the sealing block, the piston rod is through sealing block and rubber seal is close to piston rod On.
In a kind of above-mentioned forcing press, the slide block assembly includes also including adjusting screw rod that the adjusting screw rod is spirally connected On connecting rod, cavity is offered on the slide body, piston/cylinder is slidably equipped with the cavity, liquid is installed on the slide body Load pump is pressed through, ball bowl is installed in the piston/cylinder, the bottom surface of the ball bowl is interior with the closing space of piston/cylinder to be full of liquid Hydraulic pressure overload pump is pressed oil and is communicated to, the other end of the adjusting screw rod is spherical in shape and is resisted against on ball bowl, on the slide body Rotating mechanism is installed, the rotating mechanism can drive adjusting screw rod to rotate.
In a kind of above-mentioned forcing press, the rotating mechanism includes motor, the worm screw in slide body, connection snail The chain component of bar and motor, one end spherical in shape is provided with worm gear on adjusting screw rod, and the chain component drives worm screw to rotate, institute Worm engaging is stated on worm gear and adjusting screw rod can be driven to rotate.
In a kind of above-mentioned forcing press, capping is also equipped with the piston/cylinder, the ball bowl is slidably installed in piston cylinder In vivo and be limited at capping.
In a kind of above-mentioned forcing press, the ball bowl includes what the sealing of cylinder and the end face along sealing protruded Installation portion, is provided with rubber ring on the outer peripheral face of sealing, and the seal with elastometic washer is described close on the inwall of piston/cylinder The end face in envelope portion can be pushed against in capping, and ball recess is offered on the installation portion, and the adjusting screw rod is pushed against spherical female In groove.
In a kind of above-mentioned forcing press, cover plate is also arranged with the adjusting screw rod, the cover plate is fixed on slide body The openend of upper and seal cavity, the worm gear is located between cover plate and capping, and dust cover is also arranged with the adjusting screw rod, The dust cover be located on cover plate.
In a kind of above-mentioned forcing press, the cavity includes the close of air chamber, lubricating cavity, separate air chamber and lubricating cavity Envelope platform, the sealing station protrudes the inner surface of cavity, and the piston/cylinder is slided in cavity and in the outer peripheral face of piston/cylinder On sealing ring is installed, the seal ring seal is in sealing station.
In a kind of above-mentioned forcing press, the connecting rod includes connecting rod and the dirt-proof boot being connected in connecting rod, described Adjusting screw rod is through dirt-proof boot and is screw-coupled to connecting rod, and sealing ring is provided with the dirt-proof boot, and the sealing ring is close to tune On section screw rod, the other end of the connecting rod offers connecting hole, the axis of the connecting hole perpendicular to adjusting screw rod axis, Connection bearing shell is installed on the connecting hole.
Compared with prior art, the present invention has following advantage：
1st, the weight of the mould that setting bascule can be with balance slide block component and on sliding block, diminution slide body, Gap between connecting rod, bent axle, to reduce in punching, the impact and abrasion of stress part, and make slide body stable movement.
2nd, hydraulic oil and hydraulic pressure overload pump, in forcing press overload operation, the hydraulic pressure under ball bowl are provided with slide block assembly Oil will let out back hydraulic pressure overload pump oil pond and sender, and lathe is stopped immediately, so as to prevent lathe and burn failure, plays protection Effect.
3rd, set rotating mechanism, by motor adjust connecting rod height, and then adjusting slider body position, it is easy to adjust, Position is accurate.
Brief description of the drawings
Fig. 1 is structural representation of the invention.
Fig. 2 is the structural representation of slide block assembly in the present invention.
Fig. 3 is the mplifying structure schematic diagram at A in the present invention.
Fig. 4 is the structural representation of bascule in the present invention.
In figure, 1, fuselage；2nd, power motor；3rd, clutch pack；31st, line shaft；32nd, driving cog；4th, transmission component； 41st, bent axle；42nd, travelling gear；5th, bascule；51st, cylinder；511st, cylinder body；512nd, upper cylinder cover；5121st, through hole；513rd, lower cylinder Lid；5131st, sealing block；5132nd, rubber seal；5133rd, piston hole；514th, shrouding；515th, sealing gasket；52nd, piston body；521、 Location hole；53rd, piston rod；54th, connecting seat；55th, fixing nut；6th, slide block assembly；61st, slide body；611st, cavity；6111st, moisten Sliding chamber；6112nd, sealing station；6113rd, air chamber；62nd, adjusting screw rod；621st, dust cover；622nd, longitudinal grooving；63rd, connecting rod；631、 Dirt-proof boot；632nd, connecting rod；633rd, connecting hole；634th, bearing shell is connected；64th, rotating mechanism；641st, motor；642nd, chain component；65、 Piston/cylinder；651st, cover；652nd, closing space；653rd, rubber ring；654th, sealing ring；655th, through hole；66th, ball bowl；661、 Sealing；662nd, installation portion；663rd, ball recess；67th, worm gear；68th, cover plate.
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described, But the present invention is not limited to these embodiments.
As shown in Figures 1 to 4, this forcing press, including fuselage 1, the clutch pack 3, transmission component in fuselage 1 4 and slide block assembly 6, power motor 2 is installed in the upper end of fuselage 1, the lower section of power motor 2 is provided with clutch pack 3, Power motor 2 is connected to clutch pack 3 by belt, and line shaft 31 is provided with clutch pack 3, and line shaft 31 protrudes Clutch pack 3 simultaneously offers driving cog 32 on line shaft 31, and transmission component 4 includes bent axle 41 and travelling gear 42, bent axle 41 two ends are installed on the fuselage 1, and travelling gear 42 is arranged on one end of bent axle 41, the biography on travelling gear 42 and line shaft 31 Dynamic tooth 32 is engaged, and driving cog 32 is rotated with nutating gear 42, and travelling gear 42 is rotated with dynamic crankshaft 41, is also installed on fuselage 1 There is bascule 5, bascule 5 is provided with connecting seat 54, and connecting seat 54 is connected to slide block assembly 6 and slide block assembly 6 and balance are filled Put 5 to set up separately in the both sides of bent axle 41, slide block assembly 6 includes connecting rod 63 and slide body 61, connecting rod 63 is set on bent axle 41 and in song Axle 41 makes slide body 61 do straight reciprocating motion along fuselage 1 under rotating, and mould installion is on slide body 61.Bascule 5 is set Can with balance slide block component 6 and the weight of the mould on slide block assembly 6, reduce slide body 61, between connecting rod 63, bent axle 41 Gap, to reduce in punching, the impact and abrasion of stress part, and make the stable movement of slide body 61.
As shown in figure 4, bascule 5 includes cylinder 51, the piston body 52 in cylinder 51 and is connected to piston body On 52 and the piston rod 53 of cylinder 51 is stretched out, cylinder 51 includes cylinder body 511, is respectively fixedly connected with and is sealed in the upper of the two ends of cylinder body 511 Cylinder cap 512 and lower cylinder cap 513, upper cylinder cover 512 are connected on the fuselage 1, and location hole 521 and location hole are offered on piston body 52 521 one end is tapered, is offered on piston rod 53 with location hole 521 to the tapered portion for matching, on the extension of tapered portion The guide part of cylinder is provided with, guide part passes location hole 521 and is connected with fixing nut 55, offered on upper cylinder cover 512 logical Hole 5121, fixing nut 55 can insert through hole 5121 and make piston body 52 against to upper cylinder cover 512, and upper cylinder cover 512 is also equipped with Shrouding 514 and sealing gasket 515, shrouding 514 compress sealing gasket 515 on upper cylinder cover 512, and block through hole 5121, piston rod 53 pass through lower cylinder cap 513 and install connecting seat 54, and connecting seat 54 is arranged on piston rod 53, and cylinder 51 is connected and high with air accumulator Calming the anger body can be by the into or out cylinder 51 of air accumulator.
Offered on lower cylinder cap 513 in piston hole 5133, piston hole 5133 and sealing block 5131 is installed, on sealing block 5131 Rubber seal 5132 is installed, piston rod 53 runs through sealing block 5131 and rubber seal 5132 is close on piston rod 53, Back-up ring is installed, one end of sealing block 5131 is resisted against on back-up ring on piston hole 5133.
The connecting seat 54 on bascule 5 is set to be pushed against on slide block assembly 6 in gases at high pressure input cylinder body 511, with song The swing of axle 41, makes slide block assembly 6 slide up and down drive piston rod 53 and stretches, and by the change of the internal damping pressure of cylinder body 511, inhales The impulsive force that slide block assembly 6 is produced is received, the effect of the impulsive force for reaching balance forcing press and the stability for improving forcing press；Set Location hole 521, can make the installation site of piston rod 53 accurate, and stress is big；Set through hole 5121 can make fixing nut 55 keep away into, The stroke of piston body 52 is lifted, the connection of piston rod 53 and piston body 52 is facilitated again；Sealing block 5131 and rubber seal are set 5132, make the output end good sealing effect of piston rod 53, it is easy for installation.
As shown in Figures 2 and 3, slide block assembly 6 includes connecting rod 63, adjusting screw rod 62 and slide body 61, the spiral shell of adjusting screw rod 62 It is connected on connecting rod 63, cavity 611 is offered on slide body 61, piston/cylinder 65 is slidably equipped with cavity 611, in slide body 61 On hydraulic pressure overload pump is installed, ball bowl 66 is installed in piston/cylinder 65, the bottom surface of ball bowl 66 is empty with the closing of piston/cylinder 65 Between full of hydraulic oil and be communicated to hydraulic pressure overload pump in 652, hydraulic oil is by the bottom branch of the bottom surface of ball bowl 66 and piston/cylinder 65 Support and formed a spacing distance, the pressure for setting hydraulic oil is the overload pressure for setting hydraulic cylinder 511, interval apart from shape Into a safe distance have buffering and protection effect, and can control pressure machine be stopped reach protection lathe and mould will not Damage, the other end of adjusting screw rod 62 is spherical in shape and is resisted against on ball bowl 66, the ball-shaped end of adjusting screw rod 62 can be in ball bowl Around center rotating in 66, the rotation amplitude wide-angle of adjusting screw rod 62 is flexible, while keeping pressure transmission all the time perpendicular to ball bowl 66 contact surface, Impact direction stabilization is also equipped with capping 651 on piston/cylinder 65, capping 651 be located in piston/cylinder 65 On opening, capping 651 can limit ball bowl 66 and deviate from from piston/cylinder 65, ball bowl 66 is slidably installed in piston/cylinder 65 and is limited Capping 651 at, capping 651 define ball bowl 66 coasting distances, that is, define ball bowl 66 buffer when ball bowl 66 buffering away from From, be also arranged with cover plate 68 on adjusting screw rod 62, cover plate 68 be fixed on slide body 61 and seal cavity 611 openend.
Rotating mechanism 64 is installed on slide body 61, rotating mechanism 64 is including motor 641, in slide body 61 The chain component 642 of worm screw, connecting worm and motor 641, one end spherical in shape is provided with worm gear 67, worm gear on adjusting screw rod 62 67 axis overlaps with the axis of adjusting screw rod 62, and worm screw engages through cavity 611 and with worm gear 67, and chain component 642 is connected to The output shaft of motor 641 simultaneously drives worm screw to rotate, and worm engaging is on worm gear 67 and adjusting screw rod 62 can be driven to rotate.By electricity Machine 641 drives worm gear 67 to rotate, and then drives the adjusting screw rod 62 for installing worm gear 67 to rotate, and reaches adjusting screw rod 62 and connecting rod 63 Between relative length, and then the formation of mould on slide body 61 is have adjusted, using automatic control and adjustment, regulation side Just, human resources are saved；The moment of torsion of motor 641 is transmitted by chain component 642, the stroke of screw rod 62 can be accurately controlled to adjust, Do not have the factor of the influence stroke test such as skidding.
It is in "convex" shaped that ball bowl 66 is overall, including cylinder sealing 661 and the peace protruded of end face along sealing 661 Dress portion 662, is provided with rubber ring 653 on the outer peripheral face of sealing 661, and rubber ring 653 is sealed in the inwall of piston/cylinder 65 On, during normal work, hydraulic oil is pushed against on the end face of sealing 661 makes the other end of sealing 661 be pushed against capping 651 On, when press operation slips up to form overload, ball bowl 66 is moved along piston/cylinder 65, and the end face of sealing 661 departs from capping 651, ball bowl 66 is operated between the bottom of capping 651 and piston/cylinder 65, and stroke is short, easy for installation, is being installed Ball recess 663 is offered along axis in portion 662, the spheric end of adjusting screw rod 62 is pushed against in ball recess 663, cavity 611 Sealing station 6112 including air chamber 6113, lubricating cavity 6111, separate air chamber 6113 and lubricating cavity 6111, sealing station 6112 is convex Go out the inner surface of cavity 611, piston/cylinder 65 slides and sealing is provided with cavity 611 and on the outer peripheral face of piston/cylinder 65 Ring 654, sealing ring 654 is sealed in sealing station 6112, and through hole 655 is offered on air chamber 6113, and hydraulic pressure overload pump is worn Cross through hole 655 to be connected with hydraulic cylinder 511, several horizontal groovings and longitudinal grooving are offered in the end of adjusting screw rod 62 622, longitudinal grooving 622 opens the horizontal grooving and longitudinal grooving that can enter on ball recess 663 to lubricating cavity 6111, fluid 622, surface lubrication is formed, worm gear 67 is located between cover plate 68 and capping 651 and infiltrates in lubricating cavity 6111.
Worm gear 67 is arranged in lubricating cavity 6111, is gone slick, rapid heat dissipation；Lubricating oil can transversely grooving and longitudinal grooving 622 enter in ball recess 663, and adjusting screw rod 62 is rotated flexibly, is worn and torn small；Cover plate 68 is set and covers opening for 651 cavitys 611 Mouthful, make lubricating cavity 6111 closed, simple structure is easy for installation.
Connecting rod 63 includes connecting rod 632 and the dirt-proof boot 631 being connected in connecting rod 632, and adjusting screw rod 62 passes through dust-proof Set 631 is simultaneously screw-coupled to connecting rod 632, and sealing ring is provided with dirt-proof boot 631, and sealing ring is close on adjusting screw rod 62, connection The other end of bar 632 offers connecting hole 633, the axis of connecting hole 633 perpendicular to adjusting screw rod 62 axis, connecting hole 633 On be provided with connection bearing shell 634, connection bearing shell 634 can be connected with bent axle 41, the drivening rod 63 of bent axle 41 is moved up and down, adjust spiral shell Dust cover 621 is also arranged with bar 62, dust cover 621 be located on cover plate 68.
Adjusting screw rod 62 is screwed onto in connecting rod 632, and the end sleeve of connecting rod 632 sets dirt-proof boot 631, can prevent dirt Fall on the screw thread of adjusting screw rod 62 or connecting rod 632, influence switching performance, having can add lubricating oil in dirt-proof boot 631, carry Efficiency when height threaded connection is rotated, reduces friction；Setting dust cover 621 can prevent dust from dropping into adjusting screw rod 62 and ball The contact surface of bowl 66, influences the rotation of adjusting screw rod 62, compared with less wear, increases the service life；Connection bearing shell 634 is easily changed, Convenient maintenance.
In an initial condition, power motor 2 drives clutch pack 3 to rotate to the present invention, the line shaft on clutch pack 3 31 are engaged to travelling gear 42, and travelling gear 42 is rotated with dynamic crankshaft 41, and the energy drivening rod 63 of bent axle 41 is rotated, and connecting rod 63 is around ball Ball recess 663 on bowl 66 is rotated, and drives slide body 61 to slide up and down, the mould processing part on slide body 61, As bent axle 41 is rotated upwardly and downwardly, piston rod 53 does stretching motion under the drive of slide block assembly 6, and song is transferred on slide block assembly 6 The impulsive force of axle 41 and bascule 5, the effect of vibration of preventing is played by the change of pressure in balanced component, reduces vibration Influence, improve lathe service life and possess precision higher, when need adjust connecting rod 63 length when, 641 turns of motor Dynamic to drive worm screw to rotate, worm and wheel 67 engages and drives the connecting rod 63 being connected on worm gear 67 and rotates, and regulation is high to setting Degree, motor 641 stops；When press operation is slipped up to be overloaded, connecting rod 63 promotes ball bowl 66 to move, and hydraulic oil is pressed into hydraulic pressure mistake Carry in pump, while forcing press stops, protection forcing press and mould will not be damaged.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode Generation, but without departing from spirit of the invention or surmount scope defined in appended claims.
Priority Applications (1)
|Application Number||Priority Date||Filing Date||Title|
|CN201510054963.4A CN104669657B (en)||2015-02-03||2015-02-03||A kind of forcing press|
Applications Claiming Priority (1)
|Application Number||Priority Date||Filing Date||Title|
|CN201510054963.4A CN104669657B (en)||2015-02-03||2015-02-03||A kind of forcing press|
|Publication Number||Publication Date|
|CN104669657A CN104669657A (en)||2015-06-03|
|CN104669657B true CN104669657B (en)||2017-06-23|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|CN201510054963.4A CN104669657B (en)||2015-02-03||2015-02-03||A kind of forcing press|
Country Status (1)
|CN (1)||CN104669657B (en)|
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|CN104976333A (en) *||2015-07-03||2015-10-14||湖南三星锻压机床有限公司||Forging press circulation oil structure and method|
|CN105291472A (en) *||2015-12-09||2016-02-03||四川内江鸿强机床有限公司||Hydraulic overload protection structure of press machine|
|CN106739132A (en) *||2016-12-11||2017-05-31||安徽海拓志永智能装备股份有限公司||A kind of pressure machine overloading protection device|
|CN106515082A (en) *||2016-12-11||2017-03-22||安徽海拓志永智能装备股份有限公司||Overload protection device for novel press|
|CN107052209B (en) *||2017-04-21||2018-10-30||江苏沃得机电集团有限公司||Open type crank press balancing device|
|CN109551799B (en) *||2019-01-25||2020-11-17||安徽远都机床股份有限公司||Closed double-point high-performance press|
|CN109550825A (en) *||2019-01-25||2019-04-02||安徽远都机床股份有限公司||A kind of slide block mechanism of closed type single point press|
|CN109591358A (en) *||2019-01-25||2019-04-09||安徽远都机床股份有限公司||A kind of closed type single point press that punching precision is high|
|CN109663847A (en) *||2019-01-25||2019-04-23||安徽远都机床股份有限公司||A kind of planer-type one point press|
|CN109591359A (en) *||2019-01-25||2019-04-09||安徽远都机床股份有限公司||A kind of straight side double crank press|
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