JPH04501697A - Sheet conveyance device equipped with a conveyance picker - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Sheet conveyance device equipped with a conveyance binker The present invention provides a transport picker and a hinged arrangement to the transport binker via a coupling element. is connected to the transport picker and moves the transport picker forward and back between the initial position and the final position. drive and control means having a crank pin for causing the crank pin to operate; The crankshaft of the is driven by a motor to perform a conveying pitch consisting of forward and reverse movements. The seat is characterized by being able to make one complete revolution during each operating cycle of the car. This invention relates to a transport device.

Devices of this type are known, for example, from US patents disclosing means for transporting sheets in printing machines. No. 3,877,694.

It is an object of the present invention to collect copy sheets fed from a copying machine from a collecting stage. used in conjunction with copy handling equipment that requires conveyance to a stack of copies. It is an object of the present invention to provide a sheet conveying device particularly suitable for. Sheet conveyance of the above model In a device according to the invention, the drive and control means are It acts in response to the rotational position, and while the crankbin is rotating, the Position in front of the dead center of the crank adjacent to the end position of the picker within the angular range. This is achieved by a restraining means that temporarily restrains the positioned transport picker.

The movement of the picker can be restrained while the crank bin continues to rotate. , the construction of the required devices and control devices can be significantly simplified. transportation The bicker reaches its end position, i.e. in front of the dead center point of the corresponding crank. The transported sheet stacks or sheets are restrained before being transferred to the transport bin. 1 car is released and stacked while being restrained, i.e. outside the defined restraint position. However, this refers to places that disturb the stacked sheets. This is a necessary condition for stacking sheets accurately without causing any legal displacement. . Furthermore, while the transport picker is restrained, the crankshaft along with the crank pin It is possible to continuously rotate the cylinder, and by using the rotational movement of the crankshaft, the conveyor piston can be rotated. Drive and control functions that must be performed while the car is in its restrained state can be obtained. , because the transport picker continues to rotate when it is restrained. The rotational movement of the crankshaft is achieved by opening the transfer picker and removing the sheet stack or sheets. It can function as a drive mechanism (,,,) to release the trigger.

While the picker is restrained in front of the range of the dead center point of the crank, This causes the transported sheet stack to be released before the picker reaches its end position. When the stack or sheet is released, the stationary stack or sheet is While the picker moves along the remaining path after its binding and before reaching its terminal position, It is separated from the transport picker. As a result, the conveyance picker is unable to ensure separation from the conveyed and released stacks or sheets without being It will be done.

The transport picker completes its return motion and is temporarily restrained within the cradle of its initial position. Similarly, when the clan special table 14-5016≦37 (3) Using the continuous rotation of the shaft, the dead center point of the crank adjacent to the initial position is control measures can be taken in the area of It is possible to close the picker after gripping the stack or sheet.

All drive and control functions are performed using a motor-driven crankshaft. In order to control all the functions of the sheet transport device, a motor that drives the crankshaft is required. Since all that is needed is to control the drive function of the It will be done. In this way, it is essential to use this device as a copy handling device. The following conditions are realized. Furthermore, the transported sheet stack or sheet is When the picker is restrained and released, its binding is in the exact order within the concerned compartment. Since the device according to the present invention can be reliably positioned at Particularly suitable for applications where

A controllable abutment that temporarily impedes the movement of the transport picker is used as a restraint. Therefore, the transport picker must be connected via an elastic gear connection mechanism in such a case. The coupling element transmits the drive movement to the transport picker.

According to an advantageous embodiment, the crank pin is radially adjustable mounted on the crankshaft. The restraining means responds to the rotational position of the crank pin to adjust the radius from the crank axis. If equipped with an adjustment mechanism to adjust the distance in the direction, the transport picker can be can be constrained to a particularly desired phase of its operating cycle without the use of contacts. is possible. In such an embodiment, the movement of the picker is temporarily restrained and the picker is When the rank pin passes through the desired angular range, it is adjusted so that the connecting element The coupling elements are adapted to perform a pivoting movement about the hinge axis, i.e. the coupling elements correspond When in this position, the crankpin is in what is called a zero stroke state.

In this type of embodiment, the crankpin adjustment mechanism has a fixed cam and is radially The crank pin is guided along this cam and aligned with the axis of the crankshaft. The cam is positioned relative to the transport picker while its radial distance from the transport picker is adjusted. a coupling element having at least a portion acting as a constraint region, the portion being on the output side; concentrically to the hinge axis of, i.e. the output hinge axis of said coupling element on the output side. It extends in an arc shape centered on .

A cam is installed inside as a closed cam groove that accepts the horizontal central protrusion of the crank pin. In other words, it is possible to achieve a particularly high degree of operational reliability with an extremely simple structure. I can do that.

The crank pin has a slot that extends radially relative to the axis of the crank itself It can be in the form of a crank guided within the link. This slotted If the crank is provided on a crank disc, said crank disc is mounted on a crank disc. It is possible to design it as a disc with an irregular part that acts as a cam part. come. This cam part is used for the sheet picked up by the transport picker in its initial position. The picker position where the sheet is clamped and the conveyed sheet is released by the conveyance picker. It can function to switch the transport picker between the open position and the open position. co-operate with the transport picker directly or via the associated control lever for the purpose I can do it.

In such embodiments, the cam portion may e.g. Spring mechanism designed as a spring mechanism can be switched directly or via a control lever , the movable claw member of the transport picker is moved to the open position or clamped by the force of the snap spring. It can be selectively biased to any of the stop positions.

According to an advantageous embodiment, which is characterized by a particularly compact construction, the crank The coupling element connected to the pin is connected to the driven arm which is hingedly connected to the transport picker. It is part of a four-bar link mechanism with a

Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the drawings.

In the drawing, FIG. 1 shows a copy handling device having a sheet conveying device according to an embodiment of the present invention. Schematically simplified side view with side walls removed; FIG. 2 is a schematic diagram showing an embodiment of the sheet conveying device on a larger scale than in FIG. 1. Simplified side views, FIGS. 3 to 5 show the moving parts in different working positions. A side view similar to FIG. 2 showing an example; FIG. 6 is a diagram of the cam path used in the example; Figure 7 shows an actual product with a cam groove having a cam path corresponding to the cam path of the cam in Figure 6. It is a top view of the fixed wall of an example.

FIG. 1 shows a schematically simplified copy handling device 1 with side walls removed. It is. This handling device 1 is related to a so-called finisher, that is, a copying machine. The copy sheets supplied by the copier are stacked in station 5 as desired. This is a device that works to stack the copy sheets in the order of 1. Copy sheets are stored in this device 1. It is transported to a stacking station 5 by a transport device generally designated 3. . This handling device 1 includes a copy supply device having a conveyance roller 6, The individual copy sheets 7 are sent to the copy collection device 9 through the conveyance roller 6, The copies are collected in this device 9 to form a stack of copies, and are transported by the sheet transport device 3. or the copy sheet 7 is conveyed to the stacking station 5 by a sheet transport device. The stacking station 3 transports them individually to a stacking station 5.

Once the stack of copy sheets 7 is collected in the actual collection device 9, the stack Before advancing the body to the stacking station 5, an unillustrated slave associated with the collection device 9 is installed. It can be stabilized by conventional stacking equipment.

At the stacking station, the individual copy sheets 7 or the individual copy sheets The stack formed by 7 (possibly a stapled stack) is the desired If so, they can be stacked one on top of the other in a staggered arrangement.

For this purpose, the support table 11 of the stacking stage thin 5 can only be used in the vertical direction. It is also possible to selectively move in the horizontal direction.

Further details of the sheet transport device 3 are illustrated in FIGS. 2-7. This sea The sheet conveying device 3 has a wall 14 defining a vertical plane extending in the sheet conveying direction. Fre special table Hei 4-501697 (4) Some of them are equipped with 13. Lever 19.20 is inside jar-j-/L/16.17 They are each attached to the frame 13 so as to be centrally pivotable. These levers extends a distance 1 from wall 14 and parallel to said wall, and journal 16 ．． By its end remote from 17 a sheet transport piston, generally designated 24, is formed. It is hingedly connected to the picker housing 23 of the picker. picker housing 23 are two housings of the same shape that are spaced apart from each other and extend parallel to each other. housing plates 27, and the levers 19,20 are connected to these housing plates. However, the drawing shows only one housing plate, i.e. Only the housing plate 27 facing forward is shown.

Below the journals 16 and 17, a J crank disk 19 is attached to the frame 13. attached, the crank disc being positioned behind the wall 14 and thus outside the It is driven by an engine with gears that cannot be seen from It can perform rotational movement. The crank disc 29 is connected to the axis 33 of the drive shaft, that is, the crank disc 29 It has a slotted link 35 extending radially relative to the axis of the rank shaft. , a crank having a crank pin 37 is guided within the slotted link. Move radially.

A coupling element in the form of a straight lever is hinged to the crankbin 37. There is. To adjust the position of the crank and crank pin 37 within the grooved link 35. For this purpose, there is a cover shown in dotted lines in FIGS. 2 to 5 on the rear side of the crank disk 34 of the wall 14. The crank pin 37 is provided with a rear adjustment protrusion (not shown). is guided along the cam 41 of.

In this embodiment, the cam 41, the shape of which is more clearly seen in FIG. It is formed by an open cam groove 42 cut into 14. See Figure 7. crankbi An adjustment projection (not shown) of the pin 37 extends into the cam groove 42 so that the crankshaft Naturally, while the engine 37 rotates in the direction of the arrow 31, it is connected to the crank disc via the crank. The grooved link 35 of the cam 29 is guided along the cam 41.

At its end portion separated from the crank bin 37 and positioned on its output side, The coupling element 39 is hinged to a portion 45 of the lever 19 by a hinge 43 . Portion 45 is attached to the main part of lever 19, as shown most clearly in FIGS. 4 and 5. It is arranged approximately at right angles to the body part.

A lever 19 is connected to the lever at its end portion remote from the journal 16. a link 47 formed in each plate 27 of the picker housing; 49 to form a bin and slot connection. Corresponding to this In this manner, the end of the lever 20 is connected to the plate 27 by means of a link 50 connected thereto. is inserted into the oval hole 51 of. By link 47.50 bin and slot connection the picker to the position defined for the tilting movement relative to the lever 19.20 realized by - a tension spring 53 is provided between the plates 27 to move the housing 23; This spring 53 engages the plate 27 on one side and the link on the other side. 50, and its spring force moves the housing 23 to the position shown in FIGS. 4 and 5. There is a tendency to move it to the position. In this position, the transport picker 24 is the closest to the assembly 9. In the operable state shown in FIGS. 2 and 3, The transport picker 24 is tilted from this position to the right side, that is, in the direction of the support table 11. The link 53 in the oval hole 51 resists the force of the tension spring 53, as shown at the top of the drawing. It moves toward the end of the elliptical hole 51.

The plate 27 of the picker housing 23 is separated from the oval hole 49.51. A picker claw 55 is formed at the lower end of the mold, and a claw member 56 is guided inside the picker mold. and cooperates with the fixed facing surface 57 of the picker claw 55 to pick up the copy sheet 7. Clamp. 2, 4 and 5 show the open position away from the facing surface 57. While the claw member 56 is shown in the opposite position, FIG. Pawl member 56 is shown in a clamping position clamping onto surface 57.

The movable claw member 56 has one leg connected to the claw member 56 at 60 (see FIG. 3). , the other leg comprises a spring in the form of a U-shaped spring connected at 61 to a corner lever 62 Actuated by a snap mechanism, the lever is attached to the connecting head 63 of the two lever arms. and is connected to the picker claw 55.

The lever arm of the corner lever 62 opposite the connection point 61 with the spring 59 has a It carries a cooperating projection 65 extending rearwardly from the face of the lever arm 64. Especially the first See Figures 2 and 3. This protrusion engages the actuating member and holds the corner lever 62 against the spring 59. in one of the two stable positions of FIG. or bias the pawl member 56 to its open position. Figure 2, Figure 4, Figure 5 See diagram.

The snap mechanism is an adjustment lever attached to the journal 17 behind the lever 20. 67 from its open position shown in FIG. 2 to its closed position shown in FIG. The adjustment lever 67 has an adjustment protrusion 65 on the arm 64 of the square lever 62. A cooperating sickle-curved end portion 68 is provided. The adjustment lever 67 It has a bent cam follower arm 69 provided opposite to the sickle-shaped end portion 68. However, this arm 69 is in the form of a rib extending in the lateral direction and is attached to the crank disk 29. Contact with the arm 69 of the adjustment lever 67 in cooperation with the closing cam 70 provided on the rear side. When doing so, rotate counterclockwise and place the sickle-shaped portion 68 on the adjustment protrusion 65 of the square lever 62. move along. See Figure 3.

This causes the snap mechanism to switch and transport the pawl member 56 to its clamping position. send The switching from the clamp position to the open position is as inferred from Fig. 4. , an opening cam 71 designed as a forward-facing lateral protrusion of the crank disc 29 is carried out by acting directly on the adjusting projection 65. In Fig. 7, the cam 71 is adjusted. Immediately after passing over the protrusion 65, the actuable state, i.e., the claw member 56 is in its claw state. The situation is shown already conveyed from the lamp position to its open position as shown in FIG.

During operation, each time the crank disk 19 rotates once in the direction shown by the arrow 31, the conveyance The picker 24 has its initial position shown in FIG. 2 and its final position shown in FIG. Place and special table 14-501697 (5) Perform exercise cycles between. a crank disc 29 having a crank bin 37; , a coupling element 39 and a lever 19 functioning as an output arm. The transmission ratio of the coupling mechanism is selected as follows. That is, the transport picker 24 The picker claw makes an override movement when returning to its initial position as shown in the figure. ensuring that the end of 55 is in contact with the actual collection device 9, and by overriding it, The picker housing 23 is allowed to tilt slightly against the tension of the tension spring 53. Book A special feature of the invention is that the arm 41 controls the radial position of the crank bin 37. However, in the area of the initial position of the transport picker 24 shown in FIG. It has the constraint area shown. The adjustment protrusion of the crankbin 37 is in this area. While moving within the area 75, the transport picker 24 is moved by the crank disk 29 continuously rotating. be restrained regardless of the situation. While the transport picker 24 is restrained, the crank The closing cam 70 is rotated by the rotation of the disc 29, so that the closing cam 70 is rotated by the arm 6 of the adjustment lever 67. 9, so that its sickle-shaped end region 68 contacts the adjusting projection 65, which switches the snap mechanism of the pawl member 56, so that the above-mentioned member The copy sheet 7 or sheets moved to the ramp position and positioned within the collection device 9 The superimposed copy sheets 7 can be clamped. crankdis While the picker 29 further rotates, the transport picker 24 moves from the position shown in FIG. 3 to the position shown in FIG. Move forward to the position shown in Figure 4, and in the position shown in Figure 4, move the Once positioned in time, the advancement area 76 is passed along the cam 41 . in this area At the terminal end, the opening cam 71 contacts the adjusting projection 65 of the snap mechanism, causing the pawl member 56 to In its open position, that is, the transport picker 24 is open. The release cam 71 is adjusted. Before contacting the articular protrusion 65, the second restraining region 77 is passed along the cam 71 and transported. The feed picker 24 is shown in FIG. 4 until the claw member 56 is released by the release cam 71. restrained in a fixed position. After that, the forward travel end area indicated by the reference numeral 78 in FIG. While passing through, the conveyor binka-24 reaches the end position shown in Figure 5 and remains in this position. , the previously held copy sheet 7 is released and placed on the support tape in the proper order. It can be placed on Bull 11.

The drive motor is now switched off and the rotation of the crank disc 29 is stopped. be done. The drive motor is mounted on the fixed wall 14 adjacent to the end edge of the crank disc 29. The switching cam 8 is attached to the terminal edge of the crank disc 29. The switch is turned off by the first and second limit switch 8L83 cooperating with 4.85. It will be done. After the rotational movement is stopped at the end position shown in FIG. Since it contacts the switching cam 84 and becomes inoperable, another sheet or two or more As a result, the upper sheet 7 is ready to be conveyed to the support table 11 in the actual collection device 9. As a result, only the crank disk 29 continues to rotate after further control signals are generated. .

As the crank disk rotates further in response to such a signal, it is shown at 79 in FIG. Therefore, the transport picker 24 passes through the return area shown in FIG. Return to initial position.

As is clear from comparing FIGS. 2 and 3 with FIGS. 4 and 5, the conveyance pitch is In the initial position of the locker 24 (FIGS. 2 and 3), the lever 19.20 is The terminal position 'f1 (see Figs. 4 and 5) is located in a region further from the picker arm 27. ) are separated from each other by a shorter distance than This change in distance is the picker It engages between the plates 27 and is connected to the lever 20 at one end 89, and the pin The bin 47 connected to the car plate 27 and the bin and slot has an arc shape through which the bin 47 is connected. This is done by means of an adjustment plate 87 with oval holes 91. Binker play 1 and 2 7 is inserted into the second arcuate oval hole 92 of the adjustment plate 87. will be inserted into. Since the oval holes 91 and 92 have an arc shape, -lever 1 9.20 changes while the bin 95.47 closes to its associated oval hole 92. ．． As a result of the movement from one end of 91 to the other, the arcuate shape of the oval hole 91.92 The defined picker housing 23 is tilted. For this reason, the transport picker 24 is It has nothing to do with the influence of the tension spring 53, which always tends to tilt toward the actual collection device 9. The inclination of the transport picker 24 when the picker 24 approaches its end position is The moving position is adjusted so that the binker claw 55 is aligned with the surface of the support table 11 (almost parallel to it). You can make it move. Therefore, the picker claw 55 is at the position shown in FIG. During the rest of the movement out of place, the picker claw picks up the copy sheet 7 or copy that it is trying to release. separated from the stack of sheets 7 in the horizontal direction of movement, so that the sheets 7 are placed on the support table in the correct order.

The above description and drawings relate only to the features listed below to provide a detailed explanation of the invention. be. Insofar as these features are disclosed in the above description and drawings, they are included in the claims. serves to define the subject-matter of the invention, if necessary, even if it is not It is.

Special table Hei 4-50H; c culm (6) Special Table Sen4-501697 (7) international search report Special table 4-50169″n (8)

Claims (1)

[Claims] 1. hingedly connected to the transport picker via a coupling element, the transport picker a clamp that allows the machine to perform forward and return movements between an initial position and an end position. The crankshaft of the crank pin is driven by a motor and moves forward. During the interlocking cycle of the transport picker, which consists of the A sheet conveyance device comprising a conveyance picker and a drive and adjustment means, The driving and adjusting means is a restraining means for the transport picker (24), and the crank While the pin (37) is rotating, the crank adjacent to the terminal position of the conveyance picker (24) the transport picker within at least one angular region positioned in front of the dead center point; actuable in response to the rotational position of the crank pin (37) to temporarily restrain the A sheet conveying device comprising the restraining means capable of 2. The device according to claim 1, wherein the restraint means is configured to prevent rotational movement of the crankshaft. selectively obstruct and release the return movement of the transport picker (24). Equipped with a contact part that The transport picker is in frictional contact with the coupling element (39) via a resilient gear connection. A device characterized in that it is connected to 3. The device according to claim 1, wherein the crank pin is aligned with the axis of the crankshaft ( 33), and the restraining means is mounted so as to be axially adjustable with respect to the crank The crank pin (37) from the axis of the crankshaft is responsive to the rotational position of the pin (37). ) and restrain the transport picker (24). ) at least across the angular range of the crankshaft along the path that causes neutral operation. Includes an abutment mechanism (35, 41) that allows the crank pin (37) to be movable A device characterized by: 4. The device according to claim 3, wherein the crank pin (37) adjustment mechanism is , a radially adjustable crank pin (37) with a fixed cam. is guided along the axis (33) and adjusts its radial distance from the axis (33) of the crankshaft. , The cam (41) acts as a restraining area (77) for the transport picker (24) comprising at least one cam portion; In said cam part, the cam is aligned with the axis of the hinge (43) of the coupling element (39) on its output side. A device characterized in that it extends concentrically with respect to a line. 5. The device according to claim 4, wherein the cam (41) is connected to the crank pin (3). 7) is cut into a fixed wall extending adjacent to the rotating surface of the crank pin (37); It has the shape of a closed cam groove (42) adapted to receive the lateral reinforcement protrusion of A device characterized by: 6. The device according to claim 4, wherein the crank pin is connected to the crankshaft. guided within the slotted link (35) and with respect to the crankshaft. A device characterized in that it is provided on a crankshaft that extends substantially in a radial direction. 7. The device according to claim 6, wherein the grooved link (35) is a cam part. Crank disc (29) characterized by irregular portions (70, 71) that function as A device characterized in that it is provided on. 8. The device according to any one of claims 1 to 7, The driving and adjusting means allows the transport to be moved against the opposite surface (57) of the transport picker (24). The feed picker (24) is picked up by the conveyance picker (24) at its initial position. The clamp position where the sheet (7) is clamped to the opposing surface (57) and the transport a claw member (56) movable between an open position where the fed sheet (7) is released; The movement of the claw member (56) is adjusted in response to the rotational position of the crank pin (37). 1. A device characterized in that it is adjustable. 9. The device according to claims 7 and 8, wherein the movement of the pawl member (56) is At least one cam portion (70, 7) provided on the crank disc (29) 1) A device characterized in that it is adjustable. 10. The device according to claim 8 or 9, wherein the claw member (56) is a snapper. A spring mechanism designed as a spring mechanism causes the pawl member (56) to spring against its spring (59). a first position and a first position biased to its open position and its clamped position respectively by and a second position; The first and second cam portions (71, 70, respectively) are on the crank disk (29). are provided for switching the snap mechanism to the first and second positions, respectively. A device characterized by: 11. The device according to any one of claims 1 to 10, A coupling element (39) is connected to the coupling element and has its free end connected to the transport picker (2). 4) and a lever (19) hinged to the its end hinged to the racker (24) and remote from the conveyor racker (24); Mounted in such a way that the part can pivot around a fixed journal (17) is part of a four-bar linkage comprising an additional lever (20) A device characterized by: 12. In the device according to claim 11, the conveyance picker (24) has a pin and a and slot connections (47, 49, 50, 51) allow lever (19) and lever (20) and restricted to said lever (19) and lever (20). tilting motion, By biasing the transport picker (24) towards the terminal position of the pin and slot connection, A device characterized in that a screw (53) is provided. 13. The device according to claim 12 is provided with an override mechanism (87). The mechanism (87) causes the transport picker (24) to move forward and return. biasing the picker (24) in response to the position occupied by the picker (24); A device characterized in that it is capable of tilting against the action of a spring (53). 14. In the device according to claim 13, the conveyor bicker (24) is provided with a spring ( 53) A device characterized in that it can be tilted in a direction opposite to its forward movement direction by .