Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
  • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
  • B65H5/10—Reciprocating or oscillating grippers, e.g. suction or gripper tables
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
  • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
  • B65H29/02—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles
  • B65H29/08—Delivering or advancing articles from machines; Advancing articles to or into piles by mechanical grippers engaging the leading edge only of the articles the grippers being oscillated in arcuate paths

Definitions

• the driving and control means comprises an arresting means for the transport picker, which is operative in response to the rotary position of the crank pin, in order to temporarily arrest said transport picker in at least one angular range, located in front of the dead center point of the crank adjacent to the end position of the picker, while the crank pin is rotating.
• the device according to the invention is, moreover, particularly suitable for such an application because the transported sheet stacks or sheets are released when the transport picker is arrested, and are therefore reliably deposited in the associated compartment in the correct order and position.
• a controllable abutment which temporarily blocks movement of the transport picker may serve as an arresting means , the transport picker being in such case frictionally connected with the coupling element via a resilient gear connection, and said coupling element transmitting the driving move ⁇ ment to the transport picker.
• the adjustment mechanism of the crank pin may comprise a fixed cam along which the radially shiftable crank pin is guided for the control of its radial distance from the axis of the crank shaft, the cam having at least one section serving as an arresting area for the transport picker and extending concentrically with the axis of the hinge of the coupling element on the output side, i.e. in the form of an arc around the axis of the output hinge of said coupling element on the output side.
• cam is designed as a closed cam groove in which a lateral control projection of the crank pin is received.
• the crank pin can take the form of a crank guided in a slotted link which extends radially to the axis of the crank shaft. If the slotted link is pro ⁇ vided on a crank disk, said crank disk can be designed as a cam disk and provided with irregularities which serve as cam sections.
• the cam sections can serve to switch over the transport picker between a picker position, in which sheets taken over by the transport picker in its initial position are clamped, and an open position, in which the transported sheets are released by the transport picker, and for this purpose can cooperate with the transport picker either directly or via associated control levers .
• the cam sections can serve to switch over a spring arrangement designed for example as a snap mechanism either directly, or indirectly by means of a control lever if such a mechanism is provided in order to selectively bias a movable claw member of the trans ⁇ port picker by the force of the snap spring into the open position or the clamping position.
• Fig. 1 a schematically simplified lateral view, with a side wall removed, of a copy- handling apparatus including a sheet- transport device according to an embodiment of the inven ⁇ tion;
• Fig. 7 a plan view of a fixed wall of the embodiment with a cam groove cut into said wall whose cam path corresponds to that of the cam in Fig. 6.
• the stack can be stapled by means of a con ⁇ ventional stacking device associated with the collecting unit 9 and not illu ⁇ strated, before the stack is advanced to the stacking station 5.
• the individual copy sheets 7 or the stacks formed of indi ⁇ vidual copy sheets 7 are stacked one on top of the other in an offset arrangement, if so desired.
• a sup ⁇ porting table 11 of stacking station 5 is shiftable not only in the vertical direction but also, selectively, in the horizontal direction.
• crank disk 29 is mounted on frame 13 , said crank disk being drivable by means of a geared engine, located behind the wall 14 and not visible therefore, for rotary movement in a direction as indicated by the arcuate arrow 31.
• the crank disk 29 includes a slotted link 35 extending radially to the axis 33 of its driving shaft, i.e. the axis of the crank shaft, a crank including a crank pin 37 being guided in said slotted link for radial movement.
• a coupling element taking the form of a straight lever is hinged to crank pin 37.
• a cam 41 is pro ⁇ vided behind the crank disk 39 on wall 14 which is indicated in dash- dotted lines in Figs . 2 to 5 and along which the crank pin 37 is guided with a rear control projection which is not visible in the drawing.
• cam 41 whose shape is more clearly apparent from Fig. 6 , is formed by a closed cam groove 42 which is cut into fixed wall 14, see Fig. 7.
• the control projection of crank pin 37 extends into cam groove 42 so that the crank pin 37 is necessarily guided along cam 41 via the crank in slotted link 35 of crank disk 29 during rotary movement in the direction of the arrow 31.
• coupling element 39 On its end section facing away from crank pin 37 and located on its output side, coupling element 39 is hinged by means of a hinge 43 to a portion 45 of lever 19. Portion 45 is disposed substantially at right angles to the main portion of lever 19 , as can best be seen in Figs. 4 and 5.
• lever 19 On its end section remote from journal 16 , lever 19 has a link 47 connected to it and engaging an oblong hole 49 provided on each plate 27 of the picker housing to form a pin-and-slot connection. In a corresponding manner the end of lever 20 is received by means of a link 50 connected to it in oblong holes 51 of the plates 27.
• a tension spring 53 is provided between the plates 27 which on the one hand engages the plates 27 and, on the other, the link 50 and by virtue of its spring force tends to move the picker housing 23 into the tilted position in which it is shown in Figs . 4 and 5.
• the transport picker 24 is tilted to the position in which it is closest to the collecting unit 9.
• the link 50 in oblong hole 51 moving in opposition to the force of tension spring 53 towards the end of the oblong hole 51 shown at the top in the drawing.
• Plates 27 of the picker housing 23 form at their lower ends facing away from the oblong holes 49 and 51 a picker claw 55 with a claw member 56 guided for movement in said picker claw and cooperating with a fixed counter surface 57 on the picker claw 55 for clamping copy sheets 7.
• Figs . 2 , 4 and 5 show the claw member 56 in an opening position spaced from the counter surface 57 whereas Fig. 3 shows the claw .member 56 in a clamping position in which it clamps copy sheets 7 on the counter surface 57.
• the movable claw member 56 is operated by a snap mechanism including a spring 59 in the form of a leg spring one leg of which is linked to claw member 56 at 60 (see Fig. 3) and the other leg of which is linked to an angular lever 62 at 61 , which lever is in turn linked to picker claw 55 in the area of the connection of its two lever arms at 63.
• That lever arm of angular lever 62 which is opposite to the point of linkage to spring 59 at 61 carries in its end section an operating projection 65 projecting rear- wardly from the plane of lever arm 64, see in particular Figs . 2 and 3.
• the projection can be brought into engagement with an operating member in order to move the angular lever 62 to one of its two stable positions in which the spring 59 urges the claw member 56 into its clamping position , see Fig. 3 , or urges the claw member 56 into its opening position, see Figs . 2 , 4 , 5.
• the snap mechanism is moved from its opening position shown in Fig. 2 to its closing position shown in Fig. 3 by a control lever 67 which is mounted on journal 17 behind lever 20 and whose sickle-shaped curved end section 68 is provided for cooperation with the control projection 65 on arm 64 of angular lever 62.
• the control lever 67 has a bent-off cam follower arm 69 which is provided opposite to its sickle-shaped end section 68 and cooper ⁇ ates with a closing cam 70 provided on the rear side of crank disk 29 in the form of a laterally projecting rib and pivoting counterclockwise when making contact with arm 69 of control lever 67, the sickle-shaped section 68 taking along the control projection 65 on angular lever 62 , see Fig. 3 , whereby the snap mechanism is switched over for transferring the claw member 56 into its clamping position.
• crank disk 29 During operation each complete revolution of crank disk 29 in the direction indicated by arrow 31 produces a cycle of movements of the transport picker 24 between its initial position shown in Fig. 2 and its final position shown in Fig. 5.
• the transmission ratio of the four-bar linkage consisting of crank disk 29 with crank pin 37, the coupling element 39 and the lever 19 , which serves as an output arm, is chosen such that transport picker 24 can carry out an overtravel movement when returning to its initial posi ⁇ tion shown in Fig. 2 so that it is ensured that the end of picker claw 55 is reliably brought into contact with collecting unit 9, such overtravel pos ⁇ sibly resulting in a slight tilting of the picker housing 23 in opposition to the action of tension spring 53.
• a special feature of the invention consists in that the cam 41 controlling the radial position of the crank pin 37 com ⁇ prises an arresting range denoted 75 in Fig. 6 in the area of the initial position of transport picker 24 shown in Fig. 2.
• transport picker 24 is arrested in spite of the continuing rotation of crank disk 29.
• the rotary movement carried out by crank disk 29 during the arrest of transport picker 24 causes the closing cam 70 to make contact with arm 69 of control lever 67 so that the sickle-shaped end area 68 thereof contacts control pro ⁇ jection 65 and thus changes over the snap mechanism of the claw member 56 so that said member is moved to its clamping position, see Fig.
• transport picker 24 is moved from the position shown in Fig. 3 in a for ⁇ ward movement into the position shown in Fig. 4 in which it is located shortly in front of its end position, an advance travel area 76 being passed on cam 41.
• the opening cam 71 makes con ⁇ tact with the control projection 65 of the snap mechanism to move claw member 56 into its opening position. In Fig. 4, this operation has already been completed, i.e. transport picker 24 is open.
• a second arresting range Prior to the opening cam 71 making contact with the control projection 65 , a second arresting range
• crank disk 29 is now stopped in that the drive motor is switched off.
• the drive motor is switched by means of a first and a second limit switch 81 and 83 which are mounted adjacent to the circum ⁇ ference of crank disk 29 on fixed wall 14 and cooperate with switching cams 84 and 85 provided on the circumference of crank disk 29.
• limit switch 83 having been rendered operative by contacting the switching cam 84, the crank disk 29 only continues rotating after a further control signal has been generated as a result of a further sheet or further sheets 7 being ready in the collecting unit 9 for transport to supporting table 11.
• control plate 87 which engages between the picker plates 27 and is linked with one end to lever 20 at 89 and has an arcuate oblong hole 91 through which pin 47 of the pin-and-slot connection with the picker plates 27 passes.
• a pin 95 connected with the picker plates 27 is received in a second arcuate oblong hole 92 of control plate 87.
• the picker claw is separated from the copy sheet 7 to be released or the stack of copy sheets 7 to be released in the horizontal direction of move ⁇ ment so that the sheets 7 are deposited on the supporting table in the correct order.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Discharge By Other Means (AREA)
• Sheets, Magazines, And Separation Thereof (AREA)
• Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=6367567

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (9)

Family Cites Families (3)

• 1988
  • 1988-11-21 DE DE3839297A patent/DE3839297A1/de not_active Withdrawn
• 1989
  • 1989-11-16 JP JP2500171A patent/JPH04501697A/ja active Pending
  • 1989-11-16 DE DE68915452T patent/DE68915452T2/de not_active Expired - Fee Related
  • 1989-11-16 WO PCT/EP1989/001374 patent/WO1990005691A1/en not_active Ceased
  • 1989-11-16 EP EP89913209A patent/EP0444110B1/de not_active Expired - Lifetime

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events