US2609776A - Loading and unloading apparatus - Google Patents

Loading and unloading apparatus Download PDF

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Publication number
US2609776A
US2609776A US7643A US764348A US2609776A US 2609776 A US2609776 A US 2609776A US 7643 A US7643 A US 7643A US 764348 A US764348 A US 764348A US 2609776 A US2609776 A US 2609776A
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United States
Prior art keywords
slide
arm
press
cam
swinging
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Expired - Lifetime
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US7643A
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English (en)
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Sahlin Henry
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Individual
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Individual
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Publication date
Priority to BE486862D priority Critical patent/BE486862A/xx
Application filed by Individual filed Critical Individual
Priority to US7643A priority patent/US2609776A/en
Priority to GB909/49A priority patent/GB669646A/en
Priority to FR980901D priority patent/FR980901A/fr
Application granted granted Critical
Publication of US2609776A publication Critical patent/US2609776A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
    • B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
    • B65G47/90—Devices for picking-up and depositing articles or materials
    • B65G47/902—Devices for picking-up and depositing articles or materials provided with drive systems incorporating rotary and rectilinear movements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/10—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by grippers
    • B21D43/105—Manipulators, i.e. mechanical arms carrying a gripper element having several degrees of freedom

Definitions

  • This invention relates to material handling apparatus and in particular” to” an apparatus adapted automatically to unload” "etal stampings or pressed metal panels from. a press or machine, or conversely” to load or feed” metal blanks or sheets into thepresserjmacliine pr ⁇ paratory to the operationso'f" th'e 1attei" ⁇ .
  • An object of the invention isto providean' apparatus adapted to be' mounted on o'ra'long# side a press or machine and havinga s'vvingingv pendant arm provided at its' lotver end with means for gripping or otherwise supporting a sheet metal blank or stamping, the' apparatus' embodying means for swinging"thependantmm relatively to the press' and independently of the movable member" or rainyof the pressl oi" the movement thereof.
  • a further 'object of "the 'invention' is t' pre1- vide a loading or unloading apparatus of the foregoing character in which the actuating' means for the pendant" ⁇ armirnpa'rts thereto'a vertical movement atthe time" the" blank or stamping lies within thepress' or “machineand thereafter a bodily swinging" machine1A toward or away from the press.
  • Such movements of the" 0 pendant arm are particularlyV advantageous in unloading comparatively deep drawn ⁇ starnpings from a press since the pendant arm, Vbefore it is swung away from thelpress,v will iirst 'lift the' stamping clear of any obstruction in the lower" die.
  • etui a further object of" theinventum'L iste provide an apparatus ofthe foregongcharacter having means, preferablyucid actuatedfi con*- ⁇ nected to the upper Aend ofthe pendantarnriorf' shifting the same vertically, meanssuc'h ascarn ineans being provided 4for imparting' a I-predeter mined swingingfmotionto the armduring "its vertical travel.
  • a compound motion i. e.
  • Fig. 3 is" a .View part si H ar to Figa but illustratilflgV th positi of ⁇ certa ⁇ inoftheoperratigwnihanisln' when theffstapig or ⁇ panel has been muy withdrawn frrnlthe press.”
  • p N 4 is an enlarged seetio'ii taken substantially through lines" -'of Fig. 2"1 ⁇ oliing ⁇ ir the direc'- tirviiof the afrws c p Fig. 5 ⁇ i ⁇ s' an enlarged section taken substaii ⁇ tially throligh'line's 5-f'-5 of Fif'. 2 looking iii the direction of thfearrows. ⁇
  • Figi 8' is' ⁇ an enlarged ⁇ fragfmentary sectional View" illustrating theA 'parts' enelosed Within' the tion it is' to be understood'that theinvention is not limited' initsxapplicationtoj the'details of'construction ⁇ andjjarrangement 'ci' parts illustrated" ⁇ in the accompanying drawings," Since thel inventionis* capable" oi other" embodimentsjand of beingr practiced or' carriedo tfinjvarious ways. ⁇ Also” it'A is vtobe 4understood”that 1 ⁇ or terminology employedhereinisior, the pur ⁇ pose of description and not"offfliinitationq' In the drawings there is illustrated/by way' of example, one embodiment of' the invention as appliedfto an apparatus ⁇ operable ⁇ for the purpose of unloading ,or withdrawing stampings, ⁇ pressed" metal panels ⁇ or the 'like from a press.
  • TheA press is also equipped with the usual vertiF cally reoiprocable rainV l2'1carrying a punch or die i3 cooperablewith'the bottom die H' for" the, ⁇ purpose of stamping outl or drawing' a panely P' from'asheetmetal blank.
  • a cam block I1 is supported from the upper et 45 secured to the tube 42.
  • bracket I4 at a point immediately below the same, and in the present instance this cam block is preferably supported for vertical adjustment" relatively to the bracket I4 through the medium of adjusting devices such as the adjusting bolts I8 and I9 and adjusting nuts threaded thereon, as illustrated in Figs. 2 and 3.
  • a pair of similar depending cam plates embrace at their upperl ends opposite sides of the cam block I1 and are rigidly secured thereby by bolts 2l.
  • the cam plates 20 are thus spaced apart and have .their inner edges suitably contoured to provide curved cam Surfaces or faces 22 preferably terminating at their lower ends in parallel vertical substantially rectilinear faces 23.
  • rollers 5 have rolling engagement with the faces or edges 23, 22 of the depending cam plates 20. These rollers have suitable journal mountings, indicated in general at 25, upon the upper ends of a pair of spaced plates or members 26, the rollers being disposed at the inner sides of these members.
  • the plates or members 26 form the upper portion'of a swinging pendant arm generally indicated by the ref- A erence character B. As illustrated particularly in Fig. 5, the members 26 of the pendant arm B straddle or embrace opposite sides of a slide 21 which has an inwardly projecting boss 21d. Journalled within a transverse bore 21o in this boss is a horizontal shaft 28 to which the arm members are bolted at 29.
  • the pendant arm B may be swung inY a vertical plane outwardly and inwardly with respect to the press about the axis of the shaft or pivot 28 which is rotatably mounted within the boss 21a of the slide 21.
  • the slide 21 has a vertical bore 30, see Fig. 5, through which the shaft I5 extends and upon which the slide is guided for vertical movement.
  • the slide 21 has an outwardly extending boss 21e, see Fig, 8, provided with a vertical tapped hole into which is threaded the lower end of a lifting rod 3
  • is adjustably connected at 34 (Fig. 2) to the lower end of a piston rod 35 which carries at its upper end a piston reciprocable vertically within a fluid cylinder, such as an air cylinder 36, this cylinder being mounted upon a bracket 31 secured to thetop of the supporting bracket I4.
  • the piston rod 35 projects freely through a vertical bore l32 in cam block I1 and an aligned bore 39 in the bracket I4, thus permitting the piston rod to be reciprocated vertically thereby shifting the slide 21 up and down through the medium of the lifting rod 3l.
  • the lower ends of the plates or members 25, forming the upper portion of the pendant arm B, are rigidly connected together through the medium of a Stringer or cross bar apertured to receive a tubular arm member 4I which is rigidly secured thereto as by Welding. Telescoped into the tube 4I so las'to be adjustable therein is a second depending tube 42, it being noted that the tubular members 4I and 42 together form the lower part of the pendant arm B.
  • a split" clamp 43 embraces the lower end-.of the tube 4I and is rigidly secured thereto 'bymeans of a bolt 44, see Fig. 6.
  • an adjusting bolt 45 Threaded into a tapped hole in the clamp 43 is an adjusting bolt 45 which has a threaded connection at its lower end with a brack- By means of the adjusting bolt 45 and suitable adjusting nuts it will be seen that the tube 42 may be adjusted endwise relatively to the tube 4I thereby Varying the ⁇ vertical position of the clamping jaws, later described, carried at the lower end of the pendant arm.
  • the lower end of the tubular member 42V is secured within an aperture in a bracket plate 41 which in turn is boltedat 48 to a ,guide plate or member 49.
  • a clamping slide 5I having an upper forwardly extending fixed jaw member 52.
  • the slide is bifurcated to receive a lower swinging jaw member 53 which is pivoted to the slide -at 54 so as to swing toward and from the fixed jaw memlber 52.
  • a fluid cylinder such as an air cylinder 55, having a reciprocable piston rod 56 connected at one end to a piston within the cylinder 55 and at its opposite end to the clamping slide 5I.
  • Operation of the air cylinder mechanism will shift the clamping slide 5I inwardly and outwardly
  • member 53 has a vertically extending arm 53a adapted to engage an abutment 51, when the slide is shifted inwardly, and thereby close the clamping jaws so as to grip the work.
  • the arm 53a Upon outward movement of the' slide 5I the arm 53a will engage a rear abutment 58 and thereby open the jaws,
  • a magnet air valve 59 Mounted upon a platform 43a carried by the clamping member or Ibracket 43 is a magnet air valve 59 of any conventional type. Air under pressure from a. suitable source of supply is introduced into the air valve 60 through a main inlet 6I. An air line 62 .leads from the valve to the outer end of the cylinder 55 at one side of the piston therein and a second air line 63 leads from the air valve 69 to the cylinder 55 at the opposite side of the piston.
  • the clamping slide 5I will be shifted inwardly toward the press, as shown in dotted lines in Fig. 2, air being exhausted at this time through line 63.
  • the slide 5I Conversely, when air under pressure is introduced into the cylinder 55 through line 63 the slide 5I will be Withdrawn to the full line position shown in Fig. 2, air at this time being exhausted from lthe cylinder thro-ugh line 62.
  • trol valve 60 is utilized to shift the piston within ⁇ the upper cylinder 36, this being accomplished by means of a conduit or exible air line 64 com- ⁇ municating with line 62 and leading to the cylinaVv der 36.
  • Energization of the magnet air valve 60. is accomplished through the medium of la suitablelimit switch on the press which is actuated by a. moving part of the machine in timed relation tori the operation of the press at every cycle thereof.
  • a rotary cam type limit switch of' conventional kind, generally indicated at 65 mayV be mounted on a bracket 65a at one side of theA press.
  • This switch includes a contact engaged by one of the cams on a cam shaft 66 in the amarre of the press, the magnet air valve 60 will be energized through a control relay which holds the circuit closed and thereby maintains the magnet air valve energized during a predetermined period of operation of the pendant arm B.
  • the circuit through the magnet airvalve is interrupted and the valve deenergized through the medium of a second limit switch of conventional kind generally indicated at 69, see Fig. 2.
  • This upper limit switch is controlled by a swinging spring pressed arm carrying at its lower end a roller 1I engaged by a pin or plunger 12 carrying at its outer end a contact cam 12a. The carn12a projects into the, path of a cam roller 13, see Figs.
  • This bracket is adjustably mounted on the outer face of the boss 21e through the medium ofV an adjusting screw 15extending througha vertical slot 16 in the bracketll. By loosening the screw the bracket 14 may .be adjusted vertically thereby varying the position of thecam roller 13.
  • the cam roller A13 When the slide 21 has travelled upwardly a predetermined distance the cam roller A13 will engage the cam 12a on the pin 12, thereby swinging the arm 1Q and actuating the upperlimit switch 6e.
  • By adjustingthe cam roller 13 vertically the time of its engagement with the cam 12a may be varied, thusvarying ⁇ the upper limit of travel of the slide
  • the main limit switch 65 is set so that the press willopen to a predetermined extent before contact is made inthe switch box. For example, after the ram I2 has on its upward stroke moved punch I3 a given distance, -suchV as six inches, away from the lower die II contact may be made at the limit switch 65. ⁇ At this time the pendant arm B and gripping jaws 52, 53 will occupy their full line ⁇ positions shown in Fig. 2l When the press Vopens the stamping P is usually elevated from the lower die by conventional knock out pins, thus' positioning the edge of the panel in operative relation to the gripping jaws.
  • the outward ⁇ travel of the pendant arm B may be varied so as either to cause the clamping jaws, when open, to drop the panel P rightside up on a suitable support, such as conveyor 18, or to cause the panel to turn over and drop on the conveyor upside down.
  • provision may be made for holding the pendant arm B at the extreme upward limit of its outward swinging travel. This is accomplished in the present instance by providing an annular groove 19 onl the shaft I5 which is cleared by the slide 21 at its upperlimit o f travel, as shown in Fig. 3.
  • a C-clamp or other split ⁇ clamping ring (not shown) may be fastened inthe groove 19 to form an abutment engaging the lower edge of the slide 21 and preventing the slide from shifting downwardly by gravity.
  • a ⁇ material handling apparatus for work adapted to be ⁇ operated on in a press or machine having relatively ⁇ vertically ⁇ movable members comprising supporting means adapted to be mounted at a side ofthe machine, a slide, guide means carried by said-supporting means for guiding theslide in a vertical direction, a swinging arm depending fromsaidslide and pivotally connected thereto for swinging motion toward and from the machine, work gripping meansfcarried by the lower end of the arm, fluid operated means on said supporting means and connected to said slide for shifting the slide in a vertical direction, cooperating cam means on said arm and supporting means 'for swinging the arm, uid operated means for operating said work gripping means, electrically controlled means for actuating both of'said ⁇ fluid operated means, a limit switch actuated in timed relation to the operationof the machine for actuating said electrically 74 controlled means to operate the work gripping means and also for causing said iirst named fluid operated means to'shift the slide upward
  • a material handling apparatus for a press or machine having relatively movable members comprising supporting means adapted to be mounted in position adjacent said machine, said supporting means comprising spaced upper and lower support members, a stationary vertical guide extending between and secured to said support members, a slide separate from said relatively movable members and mounted for vertical travel on said guide between said support members, a swinging pendant arm pivotally connected to the slide for swinging motion toward and from the machine, ⁇ work engaging means for loading or unloading the work and carried by the lower end of the arm, nuid operated means on said supporting means and connected to said slide for shifting the slide in a vertical direction, cooperating cam means on said arm and supporting means for swinging the arm, uid operated means for operating said work engaging means, control means for controlling the actuation of both of said fluid operated means, means actuated in timed relation t the operation of the machine for actuating said control means to operate the work engaging means and also for causing said iirst named fluid operated means to shift the slide in a vertical direction, and means
  • a material handling apparatus for a press or machine having relatively movable members comprising supporting means adapted to be mounted in position adjacent the machine, guide means carried by said supporting means, slide means separate from said members mounted for reciprocable travel along said guide means, swingable work handling arm means mounted on said slide means for movement toward and from 8 the machine, I cam means on said ⁇ supporting means for swinging said arm means, work engaging means for loading or unloading the work and mounted adjacent the outer end of said arm means, fluid operated means connected tosaid slide means for shifting the same in one direction, fluid operated means for operating said work engaging means, control means for controlling the operation of both of said fluid operated means, a common iiuid conduit for both of said fluid operated means leading from said control means, means actuated in timed relation to the' operation of the machine for actuating said control means to open said fluid conduit to a fluid source and cause fluid to be conveyed simultaneously to both of said fluid operated means thereby to cause said rst named iiuid operated means to shift the slide means and also to cause said second
  • a material handling apparatus for a press or machine having relatively movable members comprising supporting means adapted to be mounted in position adjacent the machine, guide means carried by said supporting means, slide means separate from said members mounted for reciprocable travel along said guide means, swingable'work handling arm means mounted on said slide means for movement toward and from the machine, cam means on said supporting means for swinging said arm means, work engaging means for loading or unloading4 the work and mounted adjacent the outer end of said armv means, fluid operated means connected to said slide means for shifting the same ⁇ in one direction, fluid operated means for operating said work engaging means, electrically controlled valvermeans for controlling the operation of both of said fluid operated means, a common fluid conduit for both of said fluid operated means leading from said valve means and adapted to be opened or closed by saidvalve means, means actuated in timed relation to the operation of the machine for actuating said valve means to open said fluid conduit to a fluid source and cause fluid to be conveyed simultaneously to both of said fluid operated means thereby to cause said second named fluid operated means to operate said work engaging means and

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
US7643A 1948-02-11 1948-02-11 Loading and unloading apparatus Expired - Lifetime US2609776A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BE486862D BE486862A (xx) 1948-02-11
US7643A US2609776A (en) 1948-02-11 1948-02-11 Loading and unloading apparatus
GB909/49A GB669646A (en) 1948-02-11 1949-01-12 Improvements in and relating to work handling apparatus
FR980901D FR980901A (fr) 1948-02-11 1949-01-14 Appareil de manutention

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US669646XA 1948-02-11 1948-02-11
US980901XA 1948-02-11 1948-02-11
US7643A US2609776A (en) 1948-02-11 1948-02-11 Loading and unloading apparatus

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Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2677342A (en) * 1954-05-04 Work removing apparatus
US2684104A (en) * 1950-12-16 1954-07-20 Dessart Bors Inc Machine for and method of printing sheet material and forming articles therefrom having shaped surfaces
US2693159A (en) * 1952-03-14 1954-11-02 Albert G Taylor Stock removing device for presses
US2731668A (en) * 1953-02-06 1956-01-24 Us Rubber Co Dipping machine for forming rubber articles
US2740540A (en) * 1952-11-12 1956-04-03 American Steel Foundries Shell transfer mechanism
US2763167A (en) * 1952-08-08 1956-09-18 Sahlin Henry Loading and unloading apparatus
US2763229A (en) * 1951-08-30 1956-09-18 Sahlin Henry Loading and unloading apparatus
US2781136A (en) * 1955-12-27 1957-02-12 Press Automation Systems Inc Material handling apparatus
US2814395A (en) * 1954-04-16 1957-11-26 Sahlin Engineering Company Inc Apparatus for handling materials
US2828998A (en) * 1958-04-01 Work jaw means
US2867185A (en) * 1955-12-15 1959-01-06 Lobdell Emery Mfg Company Transfer mechanism
US2868582A (en) * 1959-01-13 loisell
US2939349A (en) * 1957-01-14 1960-06-07 Electric Materials Co Press and feed mechanism for making anode balls
US2943748A (en) * 1960-07-05 Sahlin
US2948417A (en) * 1955-05-26 1960-08-09 Arnt U Haanes Workpiece handling device
US2998887A (en) * 1956-08-14 1961-09-05 Us Industries Inc Transfer mechanism
US3013835A (en) * 1959-04-01 1961-12-19 Leland F Blatt Power operated jaw assembly
US3040685A (en) * 1962-06-26 Work-handling means for power-presses and like machines
US3040684A (en) * 1955-07-18 1962-06-26 Hillgren Mfg Co Apparatus for drawing door knobs
US3051328A (en) * 1957-03-13 1962-08-28 Planet Corp Automatic handling mechanism
US3053399A (en) * 1962-09-11 armbrust
US3080983A (en) * 1963-03-12 blatt
US3127024A (en) * 1964-03-31 Mandrel stripper for mat winding machine
US3138860A (en) * 1959-07-16 1964-06-30 Ford Motor Co Battery element burning method and machine
US3206040A (en) * 1962-04-30 1965-09-14 Tiffany, jr press.unloader
US3209922A (en) * 1962-05-16 1965-10-05 Richard H Melvin Material handling apparatus
US3243980A (en) * 1966-04-05 Material handling arm mechanism
DE1219395B (de) * 1962-04-30 1966-06-16 Sahlin Engineering Company Inc Schwenkarmgreifer mit zweifach angelenkter Greifarmendplatte
US3314274A (en) * 1964-01-23 1967-04-18 Kaiser Aluminium Chem Corp Apparatus for forming cup-shaped members
US3387717A (en) * 1965-10-11 1968-06-11 Edward H. Rofe Flat path extractor
US3391802A (en) * 1966-03-04 1968-07-09 Gen Motors Corp Workpiece extractor and turnover device
US3394650A (en) * 1965-08-19 1968-07-30 Sahlin Eng Co Inc Press unloader control system
DE1275278B (de) * 1961-12-08 1968-08-14 Fahr Ag Maschf Vorrichtung zum Einlegen von Metallteilen in Pressformen von Pressautomaten, Pressen und Spritzgussmaschinen
US4189269A (en) * 1977-04-27 1980-02-19 L. Schuler Gmbh Workpiece transport device
FR2608947A1 (fr) * 1986-12-30 1988-07-01 Prima Ind Spa Dispositif de manutention robotise et installation de cintrage de toles metalliques l'incorporant
USRE34569E (en) * 1986-12-30 1994-03-29 Amada Company, Limited Robotized handling device and sheet metal bending system featuring the same
US20110160028A1 (en) * 2009-12-30 2011-06-30 Graphic Packaging International, Inc. Apparatus and Method for Positioning and Operating Upon a Construct
CN113245425A (zh) * 2021-06-23 2021-08-13 浙江易锻精密机械有限公司 一种冲压用自动上下料装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1362286A (en) * 1920-03-06 1920-12-14 Tin Deco Rating Company Pick-off apparatus
US1836444A (en) * 1928-11-15 1931-12-15 Hazel Atlas Glass Co Transfer device
US1859956A (en) * 1929-04-17 1932-05-24 Hartford Empire Co Elevating take-out
US1999742A (en) * 1932-07-20 1935-04-30 Hartford Empire Co Glassware takeout mechanism
US2275561A (en) * 1940-09-19 1942-03-10 Gen Motors Corp Work removing apparatus for presses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1362286A (en) * 1920-03-06 1920-12-14 Tin Deco Rating Company Pick-off apparatus
US1836444A (en) * 1928-11-15 1931-12-15 Hazel Atlas Glass Co Transfer device
US1859956A (en) * 1929-04-17 1932-05-24 Hartford Empire Co Elevating take-out
US1999742A (en) * 1932-07-20 1935-04-30 Hartford Empire Co Glassware takeout mechanism
US2275561A (en) * 1940-09-19 1942-03-10 Gen Motors Corp Work removing apparatus for presses

Cited By (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2828998A (en) * 1958-04-01 Work jaw means
US3040685A (en) * 1962-06-26 Work-handling means for power-presses and like machines
US3053399A (en) * 1962-09-11 armbrust
US3243980A (en) * 1966-04-05 Material handling arm mechanism
US3080983A (en) * 1963-03-12 blatt
US2943748A (en) * 1960-07-05 Sahlin
US2677342A (en) * 1954-05-04 Work removing apparatus
US2868582A (en) * 1959-01-13 loisell
US3127024A (en) * 1964-03-31 Mandrel stripper for mat winding machine
US2684104A (en) * 1950-12-16 1954-07-20 Dessart Bors Inc Machine for and method of printing sheet material and forming articles therefrom having shaped surfaces
US2763229A (en) * 1951-08-30 1956-09-18 Sahlin Henry Loading and unloading apparatus
US2693159A (en) * 1952-03-14 1954-11-02 Albert G Taylor Stock removing device for presses
US2763167A (en) * 1952-08-08 1956-09-18 Sahlin Henry Loading and unloading apparatus
US2740540A (en) * 1952-11-12 1956-04-03 American Steel Foundries Shell transfer mechanism
US2731668A (en) * 1953-02-06 1956-01-24 Us Rubber Co Dipping machine for forming rubber articles
US2814395A (en) * 1954-04-16 1957-11-26 Sahlin Engineering Company Inc Apparatus for handling materials
US2948417A (en) * 1955-05-26 1960-08-09 Arnt U Haanes Workpiece handling device
US3040684A (en) * 1955-07-18 1962-06-26 Hillgren Mfg Co Apparatus for drawing door knobs
US2867185A (en) * 1955-12-15 1959-01-06 Lobdell Emery Mfg Company Transfer mechanism
DE1172637B (de) * 1955-12-27 1964-06-25 Press Automation Systems Inc Vorrichtung zum Einlegen und/oder Austragen von Blechwerkstuecken bei Pressen od. dgl.
US2781136A (en) * 1955-12-27 1957-02-12 Press Automation Systems Inc Material handling apparatus
US2998887A (en) * 1956-08-14 1961-09-05 Us Industries Inc Transfer mechanism
US2939349A (en) * 1957-01-14 1960-06-07 Electric Materials Co Press and feed mechanism for making anode balls
US3051328A (en) * 1957-03-13 1962-08-28 Planet Corp Automatic handling mechanism
US3013835A (en) * 1959-04-01 1961-12-19 Leland F Blatt Power operated jaw assembly
US3138860A (en) * 1959-07-16 1964-06-30 Ford Motor Co Battery element burning method and machine
DE1275278B (de) * 1961-12-08 1968-08-14 Fahr Ag Maschf Vorrichtung zum Einlegen von Metallteilen in Pressformen von Pressautomaten, Pressen und Spritzgussmaschinen
US3206040A (en) * 1962-04-30 1965-09-14 Tiffany, jr press.unloader
DE1219395B (de) * 1962-04-30 1966-06-16 Sahlin Engineering Company Inc Schwenkarmgreifer mit zweifach angelenkter Greifarmendplatte
US3209922A (en) * 1962-05-16 1965-10-05 Richard H Melvin Material handling apparatus
US3314274A (en) * 1964-01-23 1967-04-18 Kaiser Aluminium Chem Corp Apparatus for forming cup-shaped members
US3394650A (en) * 1965-08-19 1968-07-30 Sahlin Eng Co Inc Press unloader control system
US3387717A (en) * 1965-10-11 1968-06-11 Edward H. Rofe Flat path extractor
US3391802A (en) * 1966-03-04 1968-07-09 Gen Motors Corp Workpiece extractor and turnover device
US4189269A (en) * 1977-04-27 1980-02-19 L. Schuler Gmbh Workpiece transport device
FR2608947A1 (fr) * 1986-12-30 1988-07-01 Prima Ind Spa Dispositif de manutention robotise et installation de cintrage de toles metalliques l'incorporant
US4827757A (en) * 1986-12-30 1989-05-09 Prima Industrie S.P.A. Robotized handling device and sheet metal bending system featuring the same
USRE34569E (en) * 1986-12-30 1994-03-29 Amada Company, Limited Robotized handling device and sheet metal bending system featuring the same
US20110160028A1 (en) * 2009-12-30 2011-06-30 Graphic Packaging International, Inc. Apparatus and Method for Positioning and Operating Upon a Construct
US8678986B2 (en) * 2009-12-30 2014-03-25 Graphic Packaging International, Inc. Method for positioning and operating upon a construct
CN113245425A (zh) * 2021-06-23 2021-08-13 浙江易锻精密机械有限公司 一种冲压用自动上下料装置
CN113245425B (zh) * 2021-06-23 2021-09-28 浙江易锻精密机械有限公司 一种冲压用自动上下料装置

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FR980901A (fr) 1951-05-21

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