US1819704A - Press - Google Patents

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Publication number
US1819704A
US1819704A US429606A US42960630A US1819704A US 1819704 A US1819704 A US 1819704A US 429606 A US429606 A US 429606A US 42960630 A US42960630 A US 42960630A US 1819704 A US1819704 A US 1819704A
Authority
US
United States
Prior art keywords
press
spindle
spindles
presser plate
plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US429606A
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English (en)
Inventor
Friz Adolf
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1819704A publication Critical patent/US1819704A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
    • B30B1/323—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure using low pressure long stroke opening and closing means, and high pressure short stroke cylinder means

Definitions

  • M invention relates to presses and more partlcularlyto power presses. It is an object of my invention to provide a press in which the advantages ofmechanical andizid operation are combined.
  • My invention will be described in connec ⁇ tion with a machine for pressing ply-wood, but it is to be understood thatl am not limited to this particular type of machine but may adapt my invention to anytype of press, for instance to hailing presses.
  • Hydraulic presses are comparatively high, which is inconvenient as it is often necessary to provide a deep pit for accommodating the machine in a low shop.
  • Such presses While 2o presenting the advantage that the operating pressure can be ascertained very exactly by pressure gauges throughout the operation, involve the drawback that their operation is slow, unless auxiliary cylinders are provided for performing the primary stroke at a faster rate.
  • mechanical presses and more particularly presses equipped with electric motors operate at a higher rate but involve: the drawback that the o erating pressure can be ascertained only rom the power input of the motor, a
  • I provide a presser plate, a nut on the presser plate which is Supported on a vertical spindle, or any number of nuts and spindles as required, generally a pair of spindles, each with a nut.
  • spindles is .held against -rotation while a motor with a/worm gear is provided for imparting rotation to the nut so as to raise and lower the presser plate which is supported Fig. 1, drawn to a larger scale.
  • the spindle or spindles is adapted to be displaced axially and provided with a hydraulic piston.
  • the motor is operated during the primary l stage of the pressing operation, i. e. until the presser plate encounters a considerable resistance.
  • the presser plate now becomes stationary and upon further rotation of the Worm gear the spindle is raised.
  • the current supply to the motor is switched 0H, preferably b automatic means and a pump is started or supplying liquid to the hydraulic cylinder.
  • the spindle with the presser plate now, descends and performs the final stage under hydraulic pressure.
  • Fig. 1 is an elevation
  • Fig. 2 is an. end elevation of the preSS, viewed from the right in Fig. 1, with the motor removed, and4 Fig. 3 is a section on the line III-III in Referring now to the drawings, the frame of the press is built up from vertical and horizontal sections.
  • the pair of vertical sections constituting the upright at the left of the press is indicated at 1 and 2 in Fig. 2, 3 is one of the vertical sections constitutlng the upright at the right, 12 and 13 are channel sections connecting the upper, and 6 and 7 are channel sections connecting the lower ends of the uprights.
  • 14 and 15 are threaded spindles which are fitted between the sections of the two up'- rights.
  • the lower end of each spindle is provided with a reduced extension'23 of squaresection which is inserted in a transverse bar which is arranged a 24'of eachupright, as best seen in Fig. 2.
  • the shoulder betweenA the spindle and the extension absorbs the downward thrust on the s indle.
  • the vertical extension prevents rotation of the spindle but rmits axial displacement in upward direction for a purpose which willpresentl be described.
  • 16 ⁇ and 17 are nuts or threade sleeves which are mounted on the spindles 14 and 15, respectively, 19 is a worm gear on each nut, and 20,20 are worms which cooperate with the gears 19 on the respective nuts.
  • 21 is a shaft which extends throughout the frame 18 of the presser plate 4 and on which the worms 20, 2O are eyed. 22 is an electric motor which imparts rotation to the shaft 21.
  • 25I are pistons at the ends of the s indles 14 and 15, as shown for the spindle 14 in Fig. 1, and 26 are hydraulic cylinders supported bythe transverse sections 8, 9 andlO, 11, in which cylinders the pistons 25 are litted to slide.
  • 28 is a pum 27 is a liquid reservoir ve the cylinder 26 at the left end of the machine, 29 is the suction pipe, 30 is the delivery pipe of the pum V28, the
  • suction pipe beingconnected with t e resertank 2 voir
  • 31 is a three-way valve at the end of the pipe 30.
  • 34 is a pi e extending from the three-way valve 31 to t le reservoir 27
  • 35 is a pipe extendin from the valve to the upper end of the adgacent cylinder 26
  • 36 is a p pipe extending from the valve to the upper end of the cylinder 26 at the opposite .end of the press.
  • 37 is a hot-water tank for supplying the heated parts (not shown) of the press.
  • 33 is a switch inthe circuit of the motor 22, and 38 is a dog on one of the spindles, for instance 15, as shown in Fig.. 2, by which the current is switched oi when the spindle has arrived at the upper end of its stroke.
  • the motor 22 is4 now started rotating the nuts 16 and 17 and lowering the presser plate 4 with the casing 18.
  • the downward 'movement of the presser plate continues unf ltil the resistance of the partly compressed material between the plates ⁇ 4 and 5 has become equal to the thrust exerted on the presser now penetrates into the cylinders .so ythat they are permanently filled with liquid.
  • the square extensions 23 are so long that they will not move out of their holes in the trans# 1 verse bars 24 when the spindles are shifted so that the spindles are held a ainst rotation the pipes and 36, and to break the connec-A tion of these pipes with the pipe 34, and the pump 28 is started.
  • Liquid from the reservoir 27 is drawn into the pump 28 through the suction pipe 29 and delivered to the cylinders 26 through the delivery pipe 30 and the pipes 35, 36, forcing down the pistons in these cylinders and app ying the presser plate 4 tothe material'.
  • the pum 28 is arrested.
  • the pressure is read exactl;y at ⁇ a pressure gauge (not shown) as in'any hydraulic machine.
  • the overall height of the press is much reduced ascompared with the normal hydraulic presses, and the press is a self-contained unit 'suitable self-contained unit is' obtained.
  • a press comprising a frame, a bolster nut, means on said presser plate for impart- 'h ing rotation to said nut, a piston at the end of said spindle, a cylinder in which said pis ton is iitted to slide, and means for supplying l fluid under pressure to said cylinder.
  • a press comprisin a frame, a bolster plate, a threaded spind e, a thrust bearing for said spindle in said frame, a reduced ex- A tension at the lower end of said spindle forming a shoulder which is supported on said bearing, said extension being adapted to pre- Y ventrotation of said spindle in said bearing lo but to permit axial displacement, a nut on said spindle, a presser plate supported on said nut, means on said presser plate for mparting rotation to said nut, a piston at the end of said spindle, a cylinder in which said u, piston is fitted to slide, and means for supplying fluid under pressure to said cylinder.
  • a press comprising a frame having an upright, a bolster plate, a threaded spindle itted to slide in said frame but held against rotation, a nut on said spindle, a presser plate supported on said nut, means on said presser plate for imparting rotation to saidnut, a piston at the end ofsaid spindle, a cylinder in which said piston is fittedv to slide, anda pump on said upright for supplying fluid under pressure to said cylinder.
  • a presser plate In a press, a presser plate, a spindle for actuating said presser plate, mechanical means adapted to alternately displace said plate with respect to said spindle, and said spindle-With respect-to'isaid plate, and: hy-
  • a self-contained frame comprising a base structure, uprights secured to said base structure, a presser plate in said.
  • a self-contained frame comprising a base structure, uprights secured to said base structure, a presser plate in said frame, spindles on said uprights for actuating said presser plate, transverse members on l said uprights, hydraulic cylinders in said transverse members, pistons on said spindles mounted to slide in said cylinders, step bearings for'said spindles in said base structure, ⁇ mechanical means adapted to alternately displace said plate with respect to said spindles, and-said spindles withrespect to said plate, and hydraulic means adapted to 'exert thrust on said spindles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)
US429606A 1929-03-01 1930-02-19 Press Expired - Lifetime US1819704A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1819704X 1929-03-01

Publications (1)

Publication Number Publication Date
US1819704A true US1819704A (en) 1931-08-18

Family

ID=7744672

Family Applications (1)

Application Number Title Priority Date Filing Date
US429606A Expired - Lifetime US1819704A (en) 1929-03-01 1930-02-19 Press

Country Status (2)

Country Link
US (1) US1819704A (enrdf_load_stackoverflow)
GB (1) GB354741A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716258A (en) * 1951-07-13 1955-08-30 Harold L Sugg Power applying unit for the clamp nut of a tire mold
US3512476A (en) * 1967-09-13 1970-05-19 Otto Georg Screw press with two or more screws
EP0039532A1 (en) * 1980-05-06 1981-11-11 Institutet för Verkstadsteknisk Forskning Machine tool
US20110247303A1 (en) * 2010-04-07 2011-10-13 Multivac Sepp Haggenmuller Gmbh & Co. Kg Device for chamber conveyor belt machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2716258A (en) * 1951-07-13 1955-08-30 Harold L Sugg Power applying unit for the clamp nut of a tire mold
US3512476A (en) * 1967-09-13 1970-05-19 Otto Georg Screw press with two or more screws
EP0039532A1 (en) * 1980-05-06 1981-11-11 Institutet för Verkstadsteknisk Forskning Machine tool
US4387635A (en) * 1980-05-06 1983-06-14 Institutet For Verkstadsteknisk Forskning Machine tool
US20110247303A1 (en) * 2010-04-07 2011-10-13 Multivac Sepp Haggenmuller Gmbh & Co. Kg Device for chamber conveyor belt machine
US9032695B2 (en) * 2010-04-07 2015-05-19 Multivac Sepp Haggenmuller Gmbh & Co. Kg Lifting device for chamber conveyor belt machine

Also Published As

Publication number Publication date
GB354741A (enrdf_load_stackoverflow) 1931-08-04

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