US3559243A - Apparatus for controlling the movement of the matrix of metal-powder presses - Google Patents

Apparatus for controlling the movement of the matrix of metal-powder presses Download PDF

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Publication number
US3559243A
US3559243A US732606A US3559243DA US3559243A US 3559243 A US3559243 A US 3559243A US 732606 A US732606 A US 732606A US 3559243D A US3559243D A US 3559243DA US 3559243 A US3559243 A US 3559243A
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United States
Prior art keywords
matrix
movement
upper punch
rocking lever
controlling
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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
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US732606A
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English (en)
Inventor
Rolf Hermes
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Mannesmann Meer AG
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Mannesmann Meer AG
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Filing date
Publication date
Application filed by Mannesmann Meer AG filed Critical Mannesmann Meer AG
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • B22F3/03—Press-moulding apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
    • B30B11/02—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a ram exerting pressure on the material in a moulding space

Definitions

  • a mechanism controls, for instance steplessly adjustably, the movement of the matrix of a press during the compression stroke, in dependence on the movement of the upper punch.
  • An element is connected to the upper punch which moves synchronously therewith and engages a mechanism that is connected to the matrix for effecting movement of the latter after a predetermined movement of the upper punch.
  • the present invention relates to a control of the movement of a matrix, particularly of metal-powder presses, in dependence on the movement of the punch during the compression stroke.
  • German Pat. No. 543,671 discloses control of the pressing operation by moving the matrix by cams whereby transmission of the great pressure forces through the cam rollers causes considerable diiculties.
  • German Pat. No. 1,019,599 additionally operates with a bevel gear and a tooth segment, causing considerable expense
  • the German Gebrauchsmuster No. 1,909,962 proposes to take along the matrix over the upper punch by a wedge, whereby the take-along velocity of the matrix is equal to that of the upper punch and cannot be changed.
  • the problem of controlling the movement of the matrix according to size and configuration of the stamping so that a uniformly dense structure of the stamping is obtained, is solved by the present invention.
  • the solution is accomplished by connecting an element to the upper punch which, at its movement which is synchronous with that of the upper punch, abuts against a mechanism which is connected to the matrix and innitely variably adjustable.
  • a traverse is connected to the upper punch by means of the punch supporting structure, which traverse abuts, after Patented Feb. 2 1971 ICC a predetermined stroke, against a slide element connected to a rocking lever and takes said lever along to an abutment, a slide element displaceably connected to the rocking lever being pivotally connected to one end of a connecting rod whose length is adjustable and the second end of which is pivotably connected to a bolt connected to the matrix.
  • the length adjustment of the connecting rod defines the moment at which the rocking lever is taken along and thereby the beginning of the movement of the matrix.
  • the apparatus according to the invention affords, in a simple manner, infinitely variable control of the movement of the matrix according to the size and form of the stamping so that production of a structure, which is homogeneous throughout and correspondingly dense, is assured and the quality of stampings of any kind can be guaranteed.
  • FIG. l is a diagrammatic longitudinal sectional illustration of a matrix drive according to the invention in lling position
  • FIG. 2 is a diagrammatic longitudinal sectional view shown in IFIG. 1 with the mechanism shown in position after the pressing operation;
  • FIG. 3 is a diagrammatic transverse sectional view of the matrix drive according to the invention in filling position.
  • numeral '1 designates a matrix which is connected by longitudinal rods and a traverse to a bolt 2 to the free end of which one end of a connecting rod 3 is pivotally connected by a pin 4.
  • the opposite end of the connecting rod 3 is pivotally connected by a pin 5 to a slide 8 which is slidably supported in a rocking lever 6 which is rockable on a fulcrum 7.
  • the slide 8 can be displaced by rotating a threaded spindle 9 by means of a pair of bevel gears 10, a splined shaft 11 with sleeve 12, and bevel gears 13.
  • An upper punch 14 is connected by a supporting structure 15a to a traverse 15 adapted to abut against slide surfaces provided on slide elements 16 which are rockably supported by the rocking lever 6.
  • a turnbuckle 17 is provided which can be rotated by revolving a splined shaft 18 with sleeve 19.
  • the latter is operatively connected to the turnbuckle 17 by bevel gears 20.
  • An abutment 21 limits movement of the rocking lever 6 and defines its lowermost position; the abutment 21 is connected by means of a rod 22 to one end of a two-arm lever 24 rotatable on a pin 23.
  • the second end of the lever 24 supports a roller 25 which rolls on a cam 26 and is pressed against the cam 26 by the action of a spring 27 pressing against a collar 29 on a rod 28 which is connected to the abutment 2'1.
  • a locking means or latch 30 holds the rocking lever 6 in its lowermost position.
  • the latch 30 is rockable on a fulcrum 31 and is connected by a rod 36 to one arm of an angle lever 32 which is rotatable on a pin 33; the second arm of the angle lever is provided with a roll 34 which is pressed against the cam 26 by the action of a tension spring 35.
  • a lower punch 37 is rigidly connected to the housing of the control apparatus (FIG. 3).
  • the mechanism for actuating the upper punch 14 is not shown in the drawing because it is not part of the present invention.
  • the traverse 15 After entry of the upper punch 14 in the matrix 1 the traverse 15 abuts against the elements 16 of the rocking lever 6 and takes along the matrix 1 whereto the lever 6 is connected by the slide 8, the connecting rod 3 and the bolt 2.
  • the velocity of the movement of the matrix relative to the movement of the upper punch can be infinitely variably changed by displacing the slide 8 in the lever 6.
  • the speed of movement of the matrix In the extreme right position of the slide 8, as shown in FIG. 2, the speed of movement of the matrix is approximately equal to that of the upper punch 14, since the pin at the lower end of the connecting rod 3 is farthest away from the fulcrum 7. If the slide 8 is moved to the left the deviation of the pin 5 becomes smaller, causing a reduction of the velocity of movement of the matrix 1.
  • a control system for presses comprising a movable matrix, a movable upper punch, first means connected to said upper punch for movement therewith, second means connected to said matrix and engageable with said first means during the CII compression stroke of said upper punch for moving said matrix when said upper punch is moved and said first means is engaged with said second means, and said second means comprising infinitely variable means for controlling the time of engagement of said first means with said second means for controlling the movement of said matrix during the compression stroke in dependence on the movement of said upper punch.
  • said first means comprises a supporting structure for said upper punch
  • said seconds means comprising a rocking lever having slide elements mounted thereon for engagement with said support structure and movement of said rocking lever after a predetermined compression stroke of said upper punch, an abutment adapted to be abutted by said rocking lever for stopping movement of the latter after a predetermined movement of said rocking lever, infinitely variable means in the form of a slide longitudinally movable on said rocking lever, a bolt connected to said matrix, and a connecting rod having a first end connected to said slide and having a second end connected to said bolt.
  • a control system comprising means for infinitely variably displacing said slide longitudinally of said rocking lever, locking means for arresting said rocking lever after movement of said rocking lever has been stopped by said abutment, and cam means for actuating said locking means and said abutment for releasing said rocking lever.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Press Drives And Press Lines (AREA)
  • Control Of Presses (AREA)
  • Powder Metallurgy (AREA)
US732606A 1967-07-05 1968-05-28 Apparatus for controlling the movement of the matrix of metal-powder presses Expired - Lifetime US3559243A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0074631 1967-07-05

Publications (1)

Publication Number Publication Date
US3559243A true US3559243A (en) 1971-02-02

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ID=7315796

Family Applications (1)

Application Number Title Priority Date Filing Date
US732606A Expired - Lifetime US3559243A (en) 1967-07-05 1968-05-28 Apparatus for controlling the movement of the matrix of metal-powder presses

Country Status (5)

Country Link
US (1) US3559243A (enrdf_load_stackoverflow)
DE (1) DE1627939C3 (enrdf_load_stackoverflow)
FR (1) FR1564371A (enrdf_load_stackoverflow)
GB (1) GB1227372A (enrdf_load_stackoverflow)
SE (1) SE329473B (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687586A (en) * 1970-04-22 1972-08-29 Tamagawa Kikai Kinzoku Kk Powder-forming press
US3758245A (en) * 1970-07-03 1973-09-11 Mannesmann Meer Ag Hydraulic press for compression of powder
US3826599A (en) * 1972-06-01 1974-07-30 Wolverine Pentronix Adjusting mechanism and process for powder compacting press
US3972670A (en) * 1974-05-22 1976-08-03 Gebruder Netzsch, Maschinenfabrik Press for making castings of powder or granular materials
US4170621A (en) * 1977-09-24 1979-10-09 Adolf Illig Maschinenbau Gmbh & Co. Thermoforming apparatus and method of motion control
US4260346A (en) * 1979-10-09 1981-04-07 Anderson Jr Raymond B Press assembly for powder material
US4372903A (en) * 1980-09-02 1983-02-08 Cts Corporation Process for controlling the movement of press components
US4379684A (en) * 1980-06-13 1983-04-12 Yoshizuka Seiki Co., Ltd. Press for powder metallurgy

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687586A (en) * 1970-04-22 1972-08-29 Tamagawa Kikai Kinzoku Kk Powder-forming press
US3758245A (en) * 1970-07-03 1973-09-11 Mannesmann Meer Ag Hydraulic press for compression of powder
US3826599A (en) * 1972-06-01 1974-07-30 Wolverine Pentronix Adjusting mechanism and process for powder compacting press
US3972670A (en) * 1974-05-22 1976-08-03 Gebruder Netzsch, Maschinenfabrik Press for making castings of powder or granular materials
US4170621A (en) * 1977-09-24 1979-10-09 Adolf Illig Maschinenbau Gmbh & Co. Thermoforming apparatus and method of motion control
US4260346A (en) * 1979-10-09 1981-04-07 Anderson Jr Raymond B Press assembly for powder material
US4379684A (en) * 1980-06-13 1983-04-12 Yoshizuka Seiki Co., Ltd. Press for powder metallurgy
US4372903A (en) * 1980-09-02 1983-02-08 Cts Corporation Process for controlling the movement of press components

Also Published As

Publication number Publication date
DE1627939B2 (de) 1974-06-20
FR1564371A (enrdf_load_stackoverflow) 1969-04-18
SE329473B (enrdf_load_stackoverflow) 1970-10-12
DE1627939A1 (de) 1971-07-29
DE1627939C3 (de) 1975-02-13
GB1227372A (enrdf_load_stackoverflow) 1971-04-07

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