US3774740A - Interlocking device for presses and transferfeeders - Google Patents

Interlocking device for presses and transferfeeders Download PDF

Info

Publication number
US3774740A
US3774740A US00161131A US3774740DA US3774740A US 3774740 A US3774740 A US 3774740A US 00161131 A US00161131 A US 00161131A US 3774740D A US3774740D A US 3774740DA US 3774740 A US3774740 A US 3774740A
Authority
US
United States
Prior art keywords
transferfeeder
actuating member
press
shafting system
side actuating
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
US00161131A
Other languages
English (en)
Inventor
I Kubota
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.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
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 Komatsu Ltd filed Critical Komatsu Ltd
Application granted granted Critical
Publication of US3774740A publication Critical patent/US3774740A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
    • B21D43/055—Devices comprising a pair of longitudinally and laterally movable parallel transfer bars
    • 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
    • B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00—Details of machines for forging, pressing, or hammering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
    • F16P7/00—Emergency devices preventing damage to a machine or apparatus
    • F16P7/02—Emergency devices preventing damage to a machine or apparatus by causing the machine to stop on the occurrence of dangerous conditions therein

Definitions

  • the conventional interlocking devices have drawbacks such that in the case of shutting off the interlocking movement between the driving force transmission system from the press side and the same system in the transferfeeder side, the movement of said driving force transmission system of the transferfeeder is continued by inertia, becuase the engagement portion of each of both systems is merely released. Accordingly, in these devices it is impossible to prevent any accident in the relative machineries.
  • the present invention is to provide a safety device having the function such that in the case when any overload is caused for some reason, the driving system applies an emergency stop.
  • the present invention is to provide an interlocking device for a transferfeeder which is effective and appropriate and which satisfies the abovementioned requirement.
  • the device of the present invention is characterized in that it comprises an actuating mechanism provided at the connecting position of the driving shaft of the press and the driving shaft of the transferfeeder, said actuating mechanism being adapted to cause a releasing when either the driving side or the driven side is overloaded, a transferfeeder side member of said actuating mechanism made movable on the transferfeeder side in the axial direction, a gear portion provided on said member, said gear portion being so arranged that it engages when the actuating mechanism is released, with an internalgear portion of the press side member made rotatable by a motor provided separately, an air cylinder provided on the transferfeeder side member of said actuating mechanism, said air cylinder moving axially the transferfeeder side member of said actuating mechanism, and further, a limit switch is interconnected to obtain air switching signals of said air cylinder and drive stopping signals of the transfer
  • the object of the present invention is to provide an interlocking device for synchronous driving of presses and transferfeeders.
  • Another object of the present invention is to provide a device for stopping simultaneously the whole driving systems by shutting off said interlocking device in the case when any overload is caused for some reason in any one of the presses, the interlocking device, and the transferfeeders.
  • Further object of the present invention is to provide the devicefor preventing any breakage and accident with respect to the relative machineries by shutting off the interlocking system and stopping simultaneously the whole driving systems.
  • Still further object of the present invention is to provide the device for operating only the transferfeeder without relation to the press as ocassion demands.
  • FIG. 1 is a systematic diagram of the device according to the present invention.
  • FIG. 2 is a sectional plan view of the actuating mech anism
  • FIG. 3 is a view for explaining an operation of the essential part of the actuating mechanism
  • FIG. 4 is a enlarged detail showing of a portion of FIG. 1.
  • an actuating mechanism 3 is provided in a system connecting a driving shaft 1 of the press A and a driving shaft 2 of the transferfeeder B.
  • the actuating mechanism 3 is provided with a press side actuating member 4 positioning at the end of the shafting which include the driving shaft 1 of the press A and a transferfeeder side actuating member 5 positioning atthe end of the shaftingwhich. includes the driving shaft 2 of the transferfeeder B, and said actuating mechanism 3 is so adapted as to be releasable by overload thrust from either side.
  • the actuating mechanism 3 is constructed as described below:
  • a bevel gear 7 is fixed on the shaft portion 6 forming one end of the press side actuating member 4 by a key 8 and a stopping plate 9.
  • An engaging portion 10 is formed at the other end of said actuating member 4.
  • circular-mounting member 14 is fixed in an opening 12 of a casing 11 by bolts 13.
  • the shaft portion 6 of the press side actuating member 4 is set rotatably but immovably in the axial direction by bearings 15 and 16 fitted on the mounting member 14.
  • Bearings l7, 18 are fitted on the side near the engaging member 10 of the shaft portion 6 of the actuating member 4.
  • a holding member 19 is supported rotatably by said bearings 17, 18.
  • a cylindrical engaging element 21 is mounted on the holding memberl9 by a stopping screw 20.
  • a worm wheel 26 is mounted on the flange portion 22 of the cylindrical engaging element 21 by a bolt 24 and a nut 25, and said worm wheel 26 is engaged with a worm 27, and said worm 27 is formed rotatably by the worm driving system.
  • the worm driving system is constructed as illustrated below:
  • a gear 30 is provided on a shaft 29 rotated by a motor 28.
  • the worm 27 is fixed on a shaft 32 on which a gear 31 is fixed.
  • the cylindrical engaging element 21 is rotated with the worm wheel 26 integrally.
  • Numeral 32 in the press side actuating member 4 is a key for fixing the holding member 19 and the cylinrical engaging element 21.
  • the transferfeeder side actuating member is constructed as illustrated below: 7
  • a spline portion 33 is formed on the inner wall of the transferfeeder side actuating member 5, an engaging portion 34 is formed at the end of the outer peripheral surface of said actuating member 5, also a gear portion 35 is formed on the outer peripheral surface of the engaging portion 34.
  • the actuating member 5 is mounted on the rotating shaft 2a by means of the engaging spline portion 33 of the actuating member 5 and a spline por tion 36 provided at the end of the rotating shaft 2a.
  • Said rotating shaft 2a is supported rotatably by a bearing 39 fitted on the mounting member 38 which is fixed in an opening 37 of the casing 11, but said rotating shaft 2a is immovable in the axial direction.
  • a cylindrical portion 40 of the actuating member 5 is held in a cup-shaped member 41 by bearings 42, 43 and a stop ring 44, said bearings 42, 43 are fitted within said cupshaped member 41.
  • the end portion of a lever 46 is fixed on a supporting shaft 45, and a base portion of an, actuating lever 48 is fixed on the supporting shaft 45 by a key 47.
  • the lever 46 and the actuating lever 48 are made integrally swingable with the supporting shaft 45.
  • a free end of the actuating lever 48 has a bifucated portion, and each of said bifucated portion is an engaging portion 49.
  • the engaging portion 49 is engaged with an outer peripheral engaging portion 50 of the cup-shaped member 41. In this case, said engaging portion 49 is contact with the cup-shaped member 41 so as not to interfere with its rotation, but so as to move the cup-shaped member 41 in the axial direction by the swing motion of the lever 48.
  • Another end of the lever 46 is pivoted on the outer end of a rod 52 by a pin 51.
  • the inner end of the rod 52 is fixed to a piston 54 fitted within an air cylinder 53.
  • a limit switch 55 is provided near the lever 46 and can be contacted with, the side wall of the lever 46, as occasion demands. Accordingly, when the rod 52 reciprocates, the lever 46 swings with the supporting shaft 45, and simultaneously the actuating lever 48 swings with the lever 46.
  • the cup-shaped member 41 is moved along the axis of the rotating shaft 2a, and simultaneously the actuating member 5 is moved along the spline of the rotating shaft 2a, because the engaging portion 49 of the actuating lever 48 is engaged with the engaging portion 50 of the cup-shaped member 41.
  • the end surface of the engaging portion of the press side actuating member 4 is provided with a stage portion 56, an inclined surface 58 is provided in boundary area between said stage portion 56 and a flat portion 57 of the end surface of the engaging portion 10, and said inclined surface 58 is in conformity with the diameter of the engaging portion 10.
  • the end surface of the engaging portion 34 of the transferfeeder side actuating member 5 is provided with a stage portion 59 and a flat portion 60, a boundary area between the stage portion 59 and the flat portion 60 forms an inclined surface 61 which can be closely contacted with the inclined surface 58 as shown in FIG. 3.
  • the fitting portion 64 of the rotating shaft 2a is inserted rotatably into a bearing 63 fitted in said circular hole 62.
  • the actuating member 5 is moved downwardly (FIG. 2) along the axis of the rotating shaft 2a, the inclined surface 61 of the engaging portion 34 is disengaged from the inclined surface 58 of the engaging portion 10, and then the gear portion 35 of the actuating member 5 is engaged with the inner gear portion 23 of the cylindrical engaging member 21 of the actuating member 4.
  • numeral 66 is a slide of the press A; 67 is a bolster which mounts a mold in case of press working; 68 is a drive shafting of the press A; 69 and 70 are intermediate gears; 71 and 72 are intermeditate gears for rotating a rotary cam box 73.
  • cams 74, 75, and 76 are fixed on the driving shaft 2 of the transferfeeder B.
  • a lever 77 is swung by the functional surface of the cam 74 at a supporting point 79 through a follower 78 pivoted on said lever 77, and a loading carrier 81 is reciprocated through a link 80.
  • a lever 82 is swung by the functional surface of the cam at a supporting point 84 through a follower 83 pivoted on said lever 82, and an unloading carrier 86 is reciprocated through a link 85.
  • a lever 87 is swung by the cam 76 through a follower 88 pivoted on said lever 87, an actuating lever 89 which is pivoted on the upper end of the lever 87 is re ciprocated by the lever 87, and simultaneously segment gears 91, 91 are swung by the actuating lever 89 through links 90, pivoted on both ends of the actuating lever 89, and lift bars 94, 94 which are inserted into lift cylinders 93, 93, respectively, are moved toward the upper and lower directions by rack portions 92, 92 engaged with the segment gears 91, 91 respectively.
  • a frame 95 is moved in the upper and lower directions integrally with the carriers 81 and 86 mounted on the frame 95.
  • Numeral 96 is a fork fixed on the unloading carrier 86 and 97 is a fork fixed on the loading carrier 81.
  • the fork 96 takes the formed article out of the preceding press viewed from the transferfeeder B.
  • the fork 97 feeds the formed article into the following press viewed from the transferfeeder B.
  • the supporting point of each of levers 77, 82 and 87 is fixed with a shaft 98.
  • the rectangular cyclic motion of the forks 96 and 97 consisting of the lifting, advancing,'lowering and retracting motions is controlled so as to carry out smoothly the operations for discharging and feeding the formed article from and into presses.
  • Numerals 100 and 101 are respectively a reaction cylinder for press-contacting followers 78 and 83 with the functional surface of the cams 74 and 75; 102 and 103 are respectively an air tank; 104 is a control unit; 105 is a press-consent connected with the air line of the workshop.
  • FIG. 4 shows an example of a control circuit for operating the limit switch 55 and the solenoid valve 65 in an interlocked relation.
  • 106, 107 designate the contacts of the limit switch 55; 108 is an operating coil for the solenoid valve 65; 109 is an operating coil of the solenoid valve for supplying and stopping air to a clutch-brake unit of the press; 110 is an auxiliary relay; 111, 112 are contacts of the relay 110; 113 is a button switch for starting the press, and 114 is a button switch for stopping the press.
  • the device according to this invention operates as illustrated below:
  • the power is transmittedto the transferfeeder B from the press A.
  • the actuating member 5 is disengaged from the actuating member 4 by operating the air cylinder 53. That is, as the inclined surface 61 of the actuating member 5 is press-contacted with the inclined surface 58 of the actuating member 4, as shown in FIG. 3, the rotating force of the actuating member 4 is transmitted to the actuating member 5; the rotating shaft 2a is rotated by the actuating member 5, because said rotating shaft 2a and said actuating member 5 are connected by means of a spline; the driving shaft 2 is rotated by the rotating shaft 2a connected with the driving shaft 2; and the transferfeeder B is operated by rotating the driving shaft 2.
  • the turning force is shown by a vector a
  • the thrusting force is shown by a vector b
  • the resultant force of the vector a and vector b is shown by'a vector 0.
  • the vector a becomes large in the press-contact portion between the inclined surface 58 and the inclined surface 61, and consequently the vector b becomes large in proportion to the increase of the vector a.
  • the engaging portion 34 is disengaged from the engaging portion 10, whereby the transmitting force is not applied to the actuating member 5 from the actuating member 4.
  • FIG. 4 the relationship between the solenoid valve 65 and the limit switch 55 is shown.
  • the relay 1 10 When the starting button switch is pushed, the relay 1 10 is excited and the contacts 111 and 112 are closed. With the closure of the contacts 1 11 and l 12, the coil 109 is excited so that the press is started and the transferfeeder, which is in interlocked engagement with the press, also commences operation.
  • the press and the transferfeeder are operated in an interlocked and synchronized state, if an overload is applied to the tranferfeeder in some way, the lever 46 is displaced and contacts the contact pieces of the limit switch 55.
  • the contact 106 is closed and the coil 108 is excited, which actuates the solenoid valve 65 and the cylinder 53 is operated, and at the same time, the contact 107 is closed, the coil 109 is demagnetized, and the press is stopped by the opening of the coil 109.
  • the stopping of the press results in the stopping of the drive shafting system 68 of the press and of the press side actuating member 4.
  • the device according to the present invention it is possible, in an interlocking system of a press and a transferfeeder, to stop the whole driving system at the moment when any overload is caused, and it is easy to design a device having a large strength because of its simple construction, and when necessary, the driving of transferfeeder side alone is also possible.
  • An interlocking device for use in a press line between a press and a transferfeeder comprises a press side drive shafting system and a transferfeeder side drive shafting system wherein the improvement comprises an actuating mechanism positioned between and at the location of the adjacent ends of said press side drive shafting system and said transferfeeder side drive shafting system, said actuating mechanism comprises a press side actuating member positioned at the end of said press side shafting system adjacent the end of said transferfeeder side shafting system so as to be rotatable but immovable in the axial direction of said press side shafting system, an internal gear portion positioned on said press side actuating member, a transferfeeder side actuating member positioned at the end of said transferfeeder side shafting system adjacent the end of said press side shafting system and arranged so as to be rotatable and movable in the axial direction and also arranged to be removably interlocked with said press side actuating member, said transferfeeder side actuating member having a gear portion thereor nan
  • An interlocking device for use in a press line between a press and a transferfeeder comprises a press side drive shafting system, and a transferfeeder side drive shafting system, wherein the improvement comprises an actuating mechanism positioned between and at the location of the adjacent ends of said press line drive shafting system and said transferfeeder side drive shafting system, said actuating mechanism comprises a press side actuating member positioned at the end of said press side shafting system adjacent the end of said transferfeeder side shafting system, said press side actuating member having an engaging portion on its end adjacent said transferfeeder side drive shafting system, a cylindrical engaging element having an internal gear portion thereon is rotatably mounted on said press side actuating member, a worm wheel fixed on said cylindrical engaging element, a worm positioned in engagement with said worm wheel, a transferfeeder side actuating member located on the end'of said transferfeeder drive shafting system adjacent the end of said press side drive shafting system and having an engaging portion positioned on its end adjacent said press side actuating member
  • An interlocking device for use in a press line between a press and a transferfeeder comprises a press side drive shafting system, and a transferfeeder side drive shafting system, wherein the improvement comprises an actuating mechanism positioned between and at the location of the adjacent ends of said press side drive shafting system and said transferfeeder side drive shafting system, said actuating mechanism comprises a press side actuating member positioned at the end of said press side shafting system adjacent the end of said transferfeeder side shafting system and said press side actuating member having an engaging portion at its end adjacent said transferfeeder side shafting system, a cylindrical engaging element rotatably mounted on said press side actuating member and having an internal gear portion thereon, a worm wheel fixed to said cylindrical engaging element, a worm disposed in engagement with said worm wheel, a transferfeeder side actuating member located on the end of said transferfeeder drive shafting system adjacent the end of said press side drive shafting system and having an engaging portion on its end adjacent said press side actuating member and said engaging portion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transmission Devices (AREA)
  • Gear Transmission (AREA)
  • Press Drives And Press Lines (AREA)
US00161131A 1970-07-15 1971-07-09 Interlocking device for presses and transferfeeders Expired - Lifetime US3774740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6150270 1970-07-15

Publications (1)

Publication Number Publication Date
US3774740A true US3774740A (en) 1973-11-27

Family

ID=13172917

Family Applications (1)

Application Number Title Priority Date Filing Date
US00161131A Expired - Lifetime US3774740A (en) 1970-07-15 1971-07-09 Interlocking device for presses and transferfeeders

Country Status (2)

Country Link
US (1) US3774740A (de)
DE (1) DE2135483C3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4478320A (en) * 1981-10-12 1984-10-23 Kabushiki Kaisha Komatsu Seisakusho Overload-responsive clutch apparatus for selective connection of two drive shafts to a single driven shaft
US5048410A (en) * 1989-04-05 1991-09-17 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Apparatus for securely clamping a transmission shaft of a transfer feed press during its shutdown

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759057A1 (de) * 1977-12-30 1979-07-12 Premier Forging Press Automati Sicherheits-abschaltvorrichtung, insbesondere fuer werkstueck-uebergabevorrichtungen fuer schmiedepressen
DD239360A1 (de) * 1985-06-20 1986-09-24 Warnke Umformtech Veb K Ueberlastsicherung fuer die vorschublaengsbewegung der greiferschienen von transferpressen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525915A (en) * 1946-03-18 1950-10-17 Cutler Hammer Inc Hand or power driving mechanism
US2649121A (en) * 1948-03-19 1953-08-18 Bell Telephone Labor Inc Tool for effecting solderless connections between a wire and a terminal
US3298488A (en) * 1964-09-29 1967-01-17 James A Mcdonald Torque limiting clutch
US3602345A (en) * 1969-08-05 1971-08-31 Vadim Nikolaevich Rattenberg Jaw clutch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525915A (en) * 1946-03-18 1950-10-17 Cutler Hammer Inc Hand or power driving mechanism
US2649121A (en) * 1948-03-19 1953-08-18 Bell Telephone Labor Inc Tool for effecting solderless connections between a wire and a terminal
US3298488A (en) * 1964-09-29 1967-01-17 James A Mcdonald Torque limiting clutch
US3602345A (en) * 1969-08-05 1971-08-31 Vadim Nikolaevich Rattenberg Jaw clutch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4478320A (en) * 1981-10-12 1984-10-23 Kabushiki Kaisha Komatsu Seisakusho Overload-responsive clutch apparatus for selective connection of two drive shafts to a single driven shaft
US5048410A (en) * 1989-04-05 1991-09-17 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Apparatus for securely clamping a transmission shaft of a transfer feed press during its shutdown

Also Published As

Publication number Publication date
DE2135483B2 (de) 1980-04-17
DE2135483C3 (de) 1981-01-08
DE2135483A1 (de) 1972-01-20

Similar Documents

Publication Publication Date Title
US3779155A (en) Plural-slide transfer pressing apparatus
US3221651A (en) Multi-units sheet-fed printing machine drive
US2974811A (en) Work handling mechanism
US2927703A (en) Work-handling mechanism for machine tool
US3063708A (en) Electro-mechanical clamping drive with electric control
US4302870A (en) Indexable revolving turret
US3774740A (en) Interlocking device for presses and transferfeeders
US5044481A (en) Apparatus for adjustment of knock-out timing for press
KR900016651A (ko) 유성 변속기의 단일 피스톤 작동기구
US4643037A (en) Gear change mechanism
US4244399A (en) Shed locating device for dobbies
US3648346A (en) Transverse cam operated station for an automatic nonsynchronous multistation assembly machine
GB927267A (en) Improvements in or relating to workpiece distributors
US2417781A (en) Operating mechanism for presses
US4987794A (en) Stroke adjusting apparatus for a punching press
JPS5910851B2 (ja) 押出し機
GB1217301A (en) A workpiece transport device
US3735470A (en) Indexing tool table
US3714837A (en) Indexible clutch mechanism
CS239676B1 (en) Mechanism for automatic control of printing pressure
US2395121A (en) Drilling head unit
US2618841A (en) Automatic turret lathe
US3306413A (en) Apparatus for stopping mechanically driven presses
JPH0350694A (ja) ユニット収納装置
US5718152A (en) Press with gripping rails and pretensioning device