DE1128836B - Stop bar program control for the stack feed in a cutting machine for paper, cardboard or the like. - Google Patents

Description

Stop bar program control for the stack feed in a cutting machine for paper, cardboard or the like. The invention relates to a stop bar program control for the stack feed, especially for the stop saddle in a cutting machine for paper, cardboard or the like.

In a known stop bar program control for cutting machines for paper etc. there is a parallel to the cutter bar with auxiliary stops if necessary provided stop rod is provided, and with the stops acts a from the stop saddle actuated, electrical switch contacts having slide together.

The invention relates to an improvement in fence bar program control of the type indicated and is intended in particular to provide program control create, which works quickly and effectively, a maximum of mobility and convenient setting for handling various types of paper, etc. stacks guaranteed.

Another purpose of the invention is to provide stop bar program control to create the marked type, in which the stop saddle from a any position on the work table in any desired manner of motion levels works in both forward and reverse directions.

According to the invention has a stop bar program control two switches each for the stack feed of the pre-marked type of carriage acting sensor arms for the end positions of the stop saddle and one between this arranged, intended for the cutting stops feeler arm, which is so arranged is that it is movable in the direction of the stop rod and transversely to this, and the stop rod at its drive-side end with locking and control elements is provided to the automatic transition to another stop row of the stop rod initiate and secure.

The invention also relates to embodiments of the previously explained stop rod program control.

In the drawings is one embodiment of the fence bar program control presented on a cutting machine for paper.

Fig. 1 is a perspective view from the front of the machine, wherein the top of the case is broken away to show the design more clearly; Fig. 2 is a detail view, seen from the side, of the switchboard at the front the machine; 3 is a perspective view from the rear of the machine; with part of the housing broken away to show the drive and the device to control the speed of the saddle; Fig. 4 is a side view of the machine from behind on an enlarged scale, it still gives the working and control devices for the mooring saddle again; Fig. 5 is a side view the same device shown in Figure 4, seen from the left; Fig. 6 is a vertical sectional view along line 6-6 of FIG. 4; Fig. 7 is a sectional view through the directional valve to regulate the motor of the vertical saddle, whereby the Valve is in the neutral position; Fig. 7A is a schematic view of the hydraulic circuit according to the condition of the system, if the The valve according to Figure 7 is in the neutral position; Figs. 8 and 8A are views according to FIGS. 7 and 7A, the control valve being in the position for forward running of the mooring saddle is located; Figures 9 and 9A are views corresponding to Figures 7 and 7 7A, in which the valve is in the position for the return of the contact saddle is located; Figure 10 is a top plan view with certain parts broken away are to the arrangement of the automatic control devices in the control slide reproduce on the front of the machine for regulating the work of the mooring saddle; Fig. 11 is a vertical section through the control slide and the switching shaft after line 11-11 of the Fig. 10, with certain parts of the device are shown in section to better reflect their execution; Fig. 12 is a vertical sectional view through the control slide along line 12-12 of FIG. 11; Fig. 13 is a horizontal sectional view through the control slide along the line 13-13 of Figure 11; 14 is a fragmentary vertical section taken along line 14-14 of FIG. 13 and shows the execution of the middle of one of the feeler arms and its control structure again; Figure 15 is a partial side elevation view of the steeple at the drive end of Figure 15 Selector shaft; 16 is a partial perspective view of the parking device for turning the selector shaft; Fig. 17 is a somewhat schematic view which shows the end position or the locked position of the device for rotating the selector shaft reproduces; Fig. 18 is a view showing the same device in an intermediate working position reproduces when the selector shaft rotates; Fig. 19 is a view showing the shift shaft device approximately at the end of the forward movement reproduces the in dashed lines The position shown gives the effect of the continued rotary movement by the drive part again; Fig. 20 is a perspective view of one of the control or stop rods; which is detachably received within the selector shaft, with a common stop is in position on it; Fig. 21 is a sectional view through the shift shaft, with one of the stop bars in place and a common one Stop and a stop for trimming are arranged on the rod; Fig. 22 Fig. 3 is a side view showing a stop bar in direct contact with the working material and in the correct alignment with its edge, where a common stop on the rod in direct relation to a line on the Working material is arranged on which the production of a cut is desired will; Fig. 23 is a perspective view of a trim fence that is associated with a usual stop is connected; Fig. 24 is a sectional view of a stop, which is used at the end of the rod; it gives a usual stop together with a thin stop in full lines and a thick stop in dashed lines again; Figure 25 is a right side view of the fence of Fig. 24; Fig. 26 is a perspective view of a thick stop; Fig. 27 is a schematic view showing the working relationship when the middle sensor arm engages a conventional stop part; Fig. 27a is a schematic View of the control processes resulting from the engagement of the feeler arm in the result in patterns shown in Fig. 27; Fig. 28 is a schematic view which the work of the middle control finger when passing the opposite Side of the usual stop during the return movement of the docking saddle; Fig. 29 and 29A are similar views showing the operation of a common fence reproduce together with a trim post; Fig. 30 is a schematic view which is the relationship between the end sensor arms and the foremost and rearmost Plays stops on the rod, the stop in this case being a thin one Stop is; Fig. 31 is a schematic view showing the relationship between represents the end feeler arms and the foremost and rearmost stops on the rod; the stop in this case is a thick stop; Figures 32 to 36 are schematic Views showing a typical series of operations when cutting a Stack of sheet material in accordance with a specific pattern and Fig. 37 is a diagram showing the hydraulic and electrical Control circuits of the machine reproduces. Referring to the drawings, FIG 1 is a diagrammatic front view of a paper cutting machine. One housing 10 encloses the machine. The work table is shown at 12, above which the knife bar 13 carrying the knife 14 is located. The knife bar is for Up and down movement is arranged in side frame 15 relative to the cutting table. A clamp bar 17 is arranged immediately behind the knife and becomes independent of the knife operated by a pedal 18. A complete cutting cycle of the knife with corresponding actuation of the clamping bar is corresponding to the actuation of a Hand control lever 20 caused by a simultaneous actuation of a Control head 21 is accompanied by hand; this therefore requires that as a security measure both hands of the operator are busy.

The clamping bar 17 is preferably driven by hydraulic drive means and the knife operated by mechanical means. It is also preferred the work of the saddle is linked to that of the knife and the clamping bar, so that a simultaneous actuation of these parts and the docking saddle mutually excludes.

The vertical saddle is operated by means of a hydraulic motor or drive controlled. The machine can optionally be designed for manual control of the vertical saddle be if z. B. the operator desires, for any particular operation to regulate the position of the saddle manually.

The selection control panel 25 for manual control or for automatic Control is on the front of the machine and preferably on the left arranged below the work table. As shown in Fig. 2, it comprises a two-way switch 27, which is either in the positions for manual control or for automatic control is thrown. When the control is in the "automatic" position is the movement of the saddle with respect to the working of the cutting knife automatically controlled as described above.

When in the "hand control" position, there is none direct relationship or an automatic working of the lay-on saddle after a cutting stroke present, with the exception of the locking effect as described above, which prevents the saddle from working, especially when moving forward, with either the clamp bar or the knife operating. The mooring saddle is moved forward by a drive when the "forward" control button 30 is pressed. This control has two positions, a partially depressed position in which the mooring saddle moves forward at a slow speed and one full Depressed position which causes the docking saddle to move at high speed moved forward. In any case, the forward movement is only continued as long as how the control button is held in the depressed position against a spring which usually puts it in the outer position or in the switched-off position presses. In this way, a forward movement of the docking saddle at any time only can be stopped by releasing the button 30.

Since the backward movement of the docking saddle attracts the attention of the Operator usually not required and there is usually less risk of that damage to the work material takes place is for the hand control The backward movement is taken care of by pressing the "reverse button" 32 which, however, results in a continuation of the backward movement of the docking saddle to the rear limit of his position. If desired, this backward movement stop, the shutdown button 33 can be pressed, resulting in a shutdown this backward movement results. If you work independently, there is a movement of the landing saddle is stopped in each direction by pressing the shut-off button 33.

As shown in Fig. 3, the various electrical Connections carried by the control sled in a flexible cable 298, the protrudes upward from a connection 299 attached to the support arm 127 at the rear the work table is worn.

With reference to the device in detail and in particular 3 to 6 of the rear saddle is shown diagrammatically at 40, which has an arm 41 which extends downward through a slot 42 in the Center of the work table extends. The arm 41 carries a nut 44, which with a Screw thread 45 is engaged, which is formed in a drive shaft 46 and the movement of the docking saddle forwards and backwards in accordance with the rotary movement of the shaft. A pulley 47 is on the shaft 46 and is secured by a V-shaped belt 48 from a drive pulley 49 driven on the shaft of a hydraulic motor 50. A hand wheel 51 is on the shaft 46 and is at the front of the machine below the work table arranged to allow adjustment of the lay-on saddle by hand.

The direction of the motor for the vertical saddle is controlled by a directional or reversing valve 54 (Fig. 5), which through a pressure line 55 is fed with a pressure medium by a pump 56 (FIG. 37), and the pump 56 is from an appropriate storage container 58 (Fig. 8 A, 9 A and 37) fed with a pressure medium. An appropriate pressure control device 60, which is operated by a main control valve 61 is provided to a desired Establish working pressure that actuates the vertical saddle motor. The actuation of the Control valve 54 from its forward to its reverse position takes place by means two solenoids 64, 65, which can optionally be energized to oppose a yoke 66 to pivot the pressure of a resilient foot 67 which, under the influence a spring 68 is to return the valve to its neutral position when both solenoids are de-energized.

The speed of movement of the mooring saddle is controlled by a flow regulator or a metering valve 70 which is regulated within the flow path of the control means is arranged by the engine and that between the engine 50 and the reversing valve 54 is arranged. The valve 70 has such properties that the flow of the Angular position of a valve lever 72 is directly proportional to which on the Outside of the valve is arranged and designed so that it is from a position in which the valve is wide open for rapid movement, in another, for example is pivoted by 90 ° deviating position, which is labeled "Slow". From it it follows that the amount of rotary movement of this valve is the amount of flow change of the pressure medium and a rotation of the valve arm with a substantially constant speed from "fast" to "slow" therefore a uniformly regulated one Delay in the speed of rotation of the motor of the docking saddle and, as a result the speed of movement of the saddle itself. One for that purpose suitable valve is known as a "Vickers flow control valve".

To control the movement of this valve lever 72 and its movement The hub of the belt pulley has to be coordinated with that of the saddle itself 47 is provided with a gear 74 (Fig. 6) which meshes with a gear 75 which is loosely arranged on a shaft 76 which is carried on the rear frame of the machine will. The gear 75 has a friction surface or hub 78 which is between friction disks or flanges 79, 80 works, and the flanges are by means of a compression spring 81 is pressed into frictional engagement with the hub 78. The flanges 79, 80 are open of the shaft 76 and therefore drive the shaft as it passes through the friction surface 78 can be rotated. A lever 83 is bolted to the shaft 76 and rotates accordingly the rotation of the shaft. A freely movable link 84 connects the lever 83 with the valve lever 72.

When the dock saddle motor rotates to cause the dock saddle to move forward, the direction of rotation of the pulley 47 is counterclockwise as shown by the arrow in FIG. This results in the tendency of the shaft 76 to rotate clockwise under the friction drive caused on the friction surface 78, whereby the lever system 83, 84, 72 is pivoted into the position shown in full lines, in which the lever 72 is against a adjustable stop 86 sets. The control valve 70 is therefore arranged in the slow position, and strives to remain in this position as long as the forward movement of the mooring saddle continues.

It can be seen that corresponding to the reverse movement of the motor of the lay-on saddle in order to cause a reverse movement of the lay-on saddle, the opposite conditions are established and the valve by the friction drive is turned into the "fast" position and that the friction clutch with Slip works after this position of the lever assembly is reached to the Hold valve in this position, in which for a continued rapid return movement the mooring saddle precaution is made.

In order to enable faster forward movement of the docking saddle, a solenoid 90 is provided which has an armature 91 to which a handlebar 92 is connected; this link is connected to the lever arm 83, as shown in FIG. In accordance with the excitation of the solenoid 90 and the tightening of its armature, the lever 83 is pulled against the "quick" position and held in it. Once the solenoid is de-energized, the forward movement of the lay-on saddle will immediately return the valve to its slow position.

An explanation of the steering device described above shows that when she moves from her quick position to her slow position, the Valve arm 72 moves with the same components of movement of control shaft 76 to progressively increasing angles moved. The shaft 76 is, however, directly connected, and their movement is therefore directly proportional to the speed of movement of the docking saddle. Therefore, if the saddle slows down its movement speed, the speed of the shaft 76, however, moves due to the increase in the effective ratio of the lever arm device of the valve lever 72 with an im substantial uniform speed continues. The movement of the valve will influenced in this way by the movement of the mooring saddle itself, and during the mooring saddle decelerates to its slow speed finds the change the speed of the valve is substantially uniform with an equivalent regulated delay of the mooring saddle itself instead, making provision for the slower movement of the mooring saddle in the shortest possible time and over essentially a constant distance is created, but at the same time it is ensured that the work material does not move from the saddle, resulting in an incorrect position and Handling of the workpiece would be caused. It can be seen that the actual deceleration speed can be changed by changing the gear ratio from gear 74 to gear 75 is changed.

For example, the fast forward speed can be about 10 to 12 m per minute, while slowing down at a speed in of the order of 60 to 72 m per minute and the slow speed may be on the order of about 0.30 to 0.45 m per minute.

Referring to Figures 7 and 7A, the reversing valve 54 is schematic shown in the neutral position into which it is pressed by the foot 67. Pressure medium is introduced through a bore 100, while the adjustable valve body 101 is arranged in the blocking position, so that no pressure medium flows through it.

Referring to Figs. 8 and 8A, the conditions are shown when the Valve for forward work of the vertical saddle is set. The valve body 101 is rotated so that a pressure medium from the feed line 100 through the opening 103 to the pressure medium motor and from the motor back through the measuring valve 70 to the opening 104, flows through a central conduit 105 in the valve body and to the reservoir returned. Under these conditions the motor will operate in the forward direction either at low or high speed; this depends on the setting of the measuring valve.

According to FIGS. 9 and 9A, the valve is shown in the position in which the reverse flow of the pressure medium takes place. The pressure medium flows from the pressure line 100 through a line 107 into the valve body 101 and out the pressure connection 104 to the measuring valve, which under this condition in the Quick position is held, then to the engine, from the engine back to the valve through the line 103, line 105, C) opening 106 and back to the storage container. Included the pre-identified type of measuring valve 70 for the return flow of the pressure medium Usually there is less drag, the speed can in the opposite direction are about 16.5 to 18 m per minute.

A switch responsive to pressure is also preferably in the control circuit provided to actuate the controls of the lay-on saddle to prevent if there is a control pressure for the fluid in the system is. The switch is shown at 110 (Figs. 4, 37) and a connection to it is made by the pump 56 via a line 111.

The switch 110 is expediently arranged on the same carrier, which carries the speed control valve 70 (Fig. 4). The relays and other electrical ones Equipment is preferably housed in a control box 112, accessible from the rear of the machine.

In order to provide for automatic control of the movement of the lay-on saddle, a control slide or carriage 120 (Fig. 12) is slidably mounted on a rod 121 which is appropriately supported on bearing arms 122 at the upper ends of the side frames 15 of the machine. The carriage 120 is slidably mounted in position on the rod by means of a bearing arm 123 and bolts 124, provision being made to move the carriage in direct relation to the movement of the docking saddle. To this end, a cable 125 is attached to the lay-on saddle and the cable extends towards the rear of the machine where it is guided around a disc 126 which is appropriately arranged on a fixed bearing arm 127; the cable then passes over a disk 128 carried on the side of a bearing arm 129 attached to a cross bar 122. The support arm 129 additionally supports a pair of discs 130 and 131 and the cable goes over the top disc 130 and towards the left end of the machine as can be seen from its front view. Here the cable goes around a disc 133 carried on a bearing arm 134 and is then attached to a bearing arm 135 which is attached to the housing of the carriage 120 itself.

The other end of the cable 125 has an upstanding arm 138 connected, which is attached to the mooring saddle and is directly movable with it; the cable 1125 goes around the lower disc 131 and extends against the opposite one or right side of the machine. Here it wanders around one carried by a bearing arm 141 Disc 140 and returns to the support arm 135 of the carriage 120. In this way a single cable is enough to move the carriage in both directions. This Cable is relatively tight and therefore allows direct movement of the control slide 120 across the front of the machine in precise relation to both the forward as well as the return movements of the workpiece carriage.

A scale 145 is appropriately attached to the bearing arms 122 below and parallel to the rod 121 and is provided with a scale which can be read directly in connection with the movements of the landing saddle. The bearing arm 135 carried by the carriage housing 120 extends downwardly behind the scale 145 and carries thereon a housing 147 in which a magnifying lens 148 is located immediately in front of the scale, and also carries a pointer 149 so that the position on the scale can be accurately read can be. A lighting device is preferably also accommodated in the housing 147 in order to facilitate reading of the scale.

The carriage 120 contains three pairs of control switches, and each Pair is designed so that it can be actuated by a separate feeler arm can. The middle pair is at 152, 153 (Figs. 10 and 11) and the feeler arm to his Actuation is shown at 154. The left pair of switches, i.e. H. the couple which is actuated at the end of the forward movement is shown at 156,157 in connection with a feeler arm 158 for its actuation. The remaining pair of switches 160, 161 enables the slide to be controlled at the rear of its movement and is operated by a feeler arm 162.

It can be seen that the two switches of each pair are referenced are adjusted to each other at different heights and therefore to different displacement sizes the sensor arms respond. This actuated a limited displacement one of these sensor arms only one of its switches, e.g. B. the lower, while a complete shift results in the actuation of both switches. The switches are preferably quick switches and are single pole two way switches, so they are two Have closed positions, but each switch is influenced so that it is in one its closing position remains that as its normal position is referred to, except when the corresponding feeler arm through one of the stops is operated. Optionally, switches 157 and 161 can be single pole, one-way switches which are usually pushed into the circuit open position.

The end feeder arms 158 and 162 are designed accordingly, and the lower ends of each of these arms are beveled on both sides, as indicated at 164, and each of these arms is arranged on a bearing arm 165 for the purpose of being able to move around pins 166 within the carriage. 120 to perform a pivoting movement. An adjustable stop 167 determines the normal position of the feeler arm. Corresponding to the actuation by one of the stops, the arm is provided with a cam on its rear side, as a result of which the bearing arm 165 is raised against a control rod 168 of the corresponding switch, which is shown in FIG. 12 as switch 160. However, it should be noted that the bearing arm 165 in FIG. 11 on the right provides provision for the successive operation of both switches 160, 161 in accordance with the magnitude of the displacement of the feeler arm as described above.

It is desirable to arrange the central feeler arm 154 on a universal support in order to allow complete freedom of its oscillating movement during the rearward movement of the application saddle and the control slide, whereby it is possible to release the various stops without damage or interference. The feeler arm 154 (Fig. 14) is in the form of a flat strip which is rotated through an angle of about 45 ° and its ends are appropriately bevelled as shown at 170 (Fig. 14). In order to create a universal arrangement for the feeler arm 154, it is arranged in a yoke 172 by means of clamping screws 173 for the purpose of vertical adjustment. The yoke 172 carries a pair of pivot pins 175 which are held in place by nuts 176, and the tapered ends of the pins are opposed to each other to support a bearing arm 178 pivotally. This bearing arm is in turn pivotably mounted on a pair of pins 180 (FIG. 13) which extend at right angles to the pin 175 and which are arranged in a U-shaped part 182 which is fastened to the rear wall of the control slide 120.

The bearing arm 178 has two switching engagement parts 184 which are arranged directly below the switching pins 185 of the two switches 152 and 153. As discussed above, the switches are arranged at different heights, so that the feeler arm 154 and the yoke 178 must perform a greater oscillating movement in order to operate one relative to the other. The sensor arm is usually pressed into a normal position by means of a spring 186, which works between the bearing arm 178 and a projection 187 of the yoke 172, and a central stop pin 188, which is freely received in the bearing arm 178, limits the movement of the bearing arm under the action of this compression spring. A torsion spring 190 (FIG. 11) tries to pivot the bearing arm 172 on the pin 175 against the action of the spring 186; however, this spring is stronger and therefore overcomes the torsion spring. A presser foot 191, on which a spring 192 resiliently engages, strives to keep the bearing arm in a neutral position while it allows its free swinging movement if the feeler arm engages one of these stops during its movement or if it engages when setting a stop from Manually adjusted to match the actual position of the slide.

From this embodiment it can be seen that the feeler arm 154 is in two directions at right angles can freely move what is required is to get free from the stop pin, and that the stop pin during attack the forward movement of the saddle and the control slide 120 on him and actuate it, thereby selectively actuating its two control switches 152, 153 caused depending on the size of the aforementioned displacement will. It is desirable to use the adjustment procedure in conjunction with the Presetting the machine to facilitate any sequence of automatic Perform operations. For this purpose, the stops can be installed and be arranged in the correct positions on the individual stop support rods, each stop being arranged separately on a rod and detached from it can be without the position or the assembly of the other stops on this Disturbing rod. There is also provision for a group of poles to be placed - Up to six in number - in the illustrated embodiment, what is required so that the saddle can follow different types of work.

The various rods are detachably mounted on a selector shaft, which can be rotated both by hand and by an automatic control, whereby Provision is made for each rod to be sequential to the control sensor arms is brought into working relationship.

Furthermore, the rods and the stops arranged on them relatively light and cheap, so that, from an economic point of view, feasible and more advantageous is a group of such rods with built-in Provide stops and remove such a group of bars, if a particular one Operation is finished, and this group of bars for the particular operation than trying to restore the stops on a single rod set so that the machine can perform another operation. Through this the setting time is shortened to a large extent, since after once the stops are on A set of rods have been set, all that is necessary is the rods to be arranged in the control shaft, whereupon the machine in accordance with the through this set of strokes specific pattern is ready to work.

The rod for receiving stops shown in FIG. 20 at 195 is provided with a downwardly projecting flange part 196 which can be received in one of the slots on the switching shaft in order to hold the rod in place. The rod is provided on its top and for the purpose of receiving the individual stops on it with a wedge-shaped or dovetail-shaped part 197 , the rear wing 198 of which is slightly raised and, as shown, rounded.

The selector shaft is shown at 200 (Figs. 10 to 12), and in You are a series of slots 201 for receiving the relative flanges 196 the rod 195 is provided. As indicated, the selector shaft has a hexagonal cross section and has six such slots, creating a corresponding number of rods Can find inclusion.

The control shaft has end pin 205 (Fig. 11), which within End housing parts 206 and 207 on opposite sides of the machine receptacle Find. Friction-reducing bearings 208 and 209 enable the rotatable arrangement of the entire assembly at the protruding end of a shaft 210 on the left Side of the machine and an adjustable pin 211 on the right side is arranged displaceably in a bearing arm 122. The pin 211 has a recess 213 for receiving a compression spring 214. A removable plug 215 is on the screwed open end of the recess and can be attached to mediating the spring 214 to apply an elastic pressure to the pin 211.

On the left side of the machine, the shaft 210 is mounted in friction-reducing bearings 220 which are mounted in the bearing arm 122. The shaft 210 protrudes from the bearing 220 and carries at its outer end a drive coupling which by means of a reduction gear is in driving engagement with the shaft of a motor 224 which is arranged on the side of the bearing arm 122; this motor enables the switching shaft to be rotated either by hand or by automatic control at a relatively low speed, for example at a speed of about 2 revolutions per second, as desired.

It is necessary to change the control shaft by means of a variable and to drive predetermined angular motion that is a fraction of a Revolution changes to approximately one complete revolution, with the shortest distance is equal to one sixth of a revolution to make the following stop in the Bringing working position. However, if fewer than the full number of rods are used it is necessary to select part of the revolution, and for this reason a drive device is provided, which this selected partial rotation the selector shaft allows.

Referring to Figures 15-19, is by means of a wedge 231 on a shaft 210 a cam plate 230 keyed, and it is between the bearing 220 and the shift shaft housing 206 arranged. On the scope of this Disc there is a raised cam 232, which with the surface of a lever arm 234 can come into engagement, which is rotatably arranged on a stub shaft 235 which in turn is attached to the bearing arm 122. A coil spring 236 seeks to push the shaft in the direction that the lever 234 against the Surface of the cam plate 230 remains, but can be lifted from it, when the cam 232 passes under the end of the arm 234. The lower surface of the Arm 234 is beveled as shown at 237 to prevent upward movement of the Armes cause when the cam 232 engages him.

The arm 234 is integral with an upstanding abutment surface 240 provided, the side of the lower surface 237 engaging on the cam is arranged offset, and this stop surface 240 is directly opposite and substantially perpendicular to a series of studs 242 which are in the housing 206 of the selector shaft can be detached and which on the circumference at a distance in Positions are arranged according to the number and spacing of the control rods. The housing is provided with threaded holes at appropriate points in order to to receive the threaded parts of these pins, which therefore by the operator can be removed and replaced in order to stop the control shaft to be determined with any selected control rod in the control positions.

The arm 234, as shown at 243 in Figure 16, is appropriate slotted, and a locking finger 244 is pivoted in it on a pin 245 and a leaf spring 246 engages the finger at to him usually to push into its locking position against a fixed pin 247, carried in arm 234 and extending across the slot. If however, one of the stop pins 242 moves against the curved end of the finger 244, if it attacks at its outer end, it lifts it against the spring 246 on its pivot pin 246, the pin 242 counteracting its movement to a finite stop position the face 240 of the arm continues. The locking finger snaps in this position 244 down into the position shown in FIG. 17 and engages over the stop pin 242 and prevents any possible backward movement of the selector shaft.

As shown in FIG. 11, a friction disk 248 is provided between the cam disk 230 and the housing 206 of the shift shaft, so that when the cam disk is rotated under the positive drive of the motor 224, there is an effort to close the shift shaft through the intermediary of the friction drive 248 rotate, but this allows sliding when the shift shaft is forcibly stopped by the nose 240. The friction drive is adjusted by turning the screw 215 in order to apply more or less axial pressure to the selector shaft and thus to change the size of the friction slip.

The sequence of operations is shown in Figs. The parts are shown in the normal position according to FIG. 17, in which the Shift shaft arranged in a fixed position and in which one of the stops 242 is held against the stop surface 240 and under the finger 244. Corresponding As the rod drive motor rotates, the shaft 210 is rotated to drive the drive of the cam plate 230 counterclockwise, as shown by the arrow, to cause. This brings the cam finger 232 against the underside of the lever arm 234 brought, this lever lifts against the action of the spring 236 and lifts at the same time the stop surface 240 in the release position shown in Figure 18. This can the pin 242 release the stop surface 240, and the friction drive 248 effects then that the switching shaft rotates with the cam plate 230. However, as soon as the Cam finger 232 migrates under the lever 234, it is returned to the locking position, and the next peg 242 snaps under the finger 244 and toward the end of the lever 240 to cause the shift shaft to stop. As in Fig. 19 is shown, this occurs after only one sixth of a revolution of the selector shaft one, although in the following work cycle, as can be seen below the rotation of the selector shaft will continue by five sixths of a turn will.

While the motor rotating the rods can be operated either manually or in accordance with an automatic operation, it is important to make provision for termination of an operation to ensure that a complete revolution can be made if necessary. For this purpose, a circumferential cam 250 with an arcuate length of about 90 ° is provided on one side of the cam disk 230 and is designed so that it comes into contact with a roller 251 which a switching arm 252 for controlling a switch 253 (Fig. 12 ) operated. The switch 253 is usually closed when it is not engaged by the cam 250 and therefore the circuit to the rotary bar motor 224 remains closed even though its manual control is immediately enabled. This causes disk 230 to continue rotating from the position shown in Fig. 17 to the position shown in Fig. 19, at which point cam 250 engages roller 251 to open the circuit on the rotary bar motor. This switches off the engine; but it continues its movement over a certain distance: continues and leads the parts back approximately into the position shown in FIG. 17, the cam disk having completed one revolution in the meantime. As can be seen, the selector shaft has rotated a fraction of a revolution, which is determined by the setting of the stop pin 242 located on it.

The various stop rods 195 are fixedly arranged in the shift shaft, but can easily be removed therefrom if it is desired to replace one rod or a set of rods with another set. For this purpose, the housing 207 of the right end of the switching shaft is provided with a series of conical pins 260, the number and position of which correspond to the slots for the various stop rods. Each pin 260 is elastically pressed against the rod by means of a spring 261, the conical end of the pin coinciding with a corresponding bevel at the end of the rod 1.95 when the latter is in position on the switching shaft and presses against the pin.

At the left end of the selector shaft, the housing 206 has a similar one Row of pins 264 provided, the ends of which bevelled in a corresponding manner to match the beveled ends of the rods. Both the tenons 260 as well as 264 carry guide pins 265 which protrude from them in the radial direction and run in slots which are formed in the selector shaft housing, to prevent the pins from twisting. The pins 264 are on their outer ones Ends threaded and engaged with adjusting nuts 266 which pass through protrude an always open slot in the housing so that they can be adjusted are accessible by the operator.

As shown in FIG. 11, there are corresponding indicator marks 268 provided on the rods and on a fixed part of the shift shaft, by means of which the operator when assembling the rods by turning the Adjusting screws 266 the individual rods 195 according to the requirements against the Can move springs 261 to determine their correct and accurate longitudinal spacing. This design creates greater accuracy when assembling the rods, and for example, a quarter turn of the set screws 266 causes longitudinal movement the rod connected to it by about 0.25 mm (0.01 "). Preferably, the indicator mark takes 268 a position on the switching shaft corresponding to the cutting edge of the knife a, and therefore it is possible to measure positions on the pole from this mark, which is the position of the saddle in relation to the knife and consequently the correct one Ensure adjustment of his cut. The attacks, which mounted on the stop bars 195 will be in correct positions on them clamped to predetermined movements of the docking saddle in accordance with to create their arrangement on the stop rods. These stop parts include a common stop, which can be assembled with additional elements can to enable additional functions.

The standard stop is shown and included at 270 in FIG a body having a groove 271 cut on its lower surface with it the stop can be received above the flange 198 of the rod. One clamp 272 is attached to the front of the stop by means of bolts 273, and the clamp extends downward to over the opposite side of flange 195 to grab. It can therefore be seen that when loosening the bolt 273 and the clamp 272 every single stop can be removed and replaced on the rod, without disturbing the assembly in any way and without the others on their stops would have to be removed and rearranged.

The working surface of the standard fence is shown at 275; it has a beveled lead-in surface 276 and is cut away at the rear end as shown at 277, thereby forming a sharp edge which ensures accurate and clearly defined operation as the feeler arm 154 moves over it. As shown, the beveled surface 276 is arranged approximately at an angle of 45 ° corresponding to the angular inclination of the feeler arm 154 .

To make provision for the machine to work for a makeover To hit, it is desirable that the machine move at slow speed moved forward a relatively short distance to accomplish this dressing. This is necessary because in case the machine is working at high speed it would move so far that the usual trimming or cutting of a narrow strip would not be possible before it can be stopped. It would therefore result in a significant drop or an in-depth cessation of Hand may be required. According to the invention, provision is made for trimming by using an auxiliary stop or a trim stop that is located on the front face of the standard stop.

This is illustrated in Figures 21 and 23 where the trim stop 280 is positioned on the body of the standard stop by means of a clamp 281 which is held in place by bolts 282. This stop has a dovetail shaped base 283 so that when clamped by clamp 281 on top of the standard stop, it will maintain a uniform and accurate position immediately in front of the standard stop. The part engaging the feeler arm is shown at 285 and, as indicated in FIG. 23, the extent to which this stop protrudes from the standard stop is the amount of forward feed provided for performing the dressing operation. It has a sharply defined edge 286 to precisely control the movement of the feeler arm. According to an exemplary embodiment, the present invention enables a finishing process to be carried out, the contact saddle operating at slow speed over a range that varies from about '/ s2' to the overlapped length of the finishing stop, which is expediently 3 / s to '/ 2 "' If the next stop on the rod is located at a greater distance than this, the machine can operate the lay-on saddle at greater speed.

Another type of stop is provided at the ends of the rods. This is an auxiliary stop, which is either a thick or a thin stop, and it is arranged directly on the standard stop. Care at the front end these auxiliary stops for reversing the movement of the lay-on saddle with or without Turning the selector shaft. The auxiliary stops allow one at the rear limit Stopping the movement of the saddle with or without reversing its movement, to cause it to move forward. As shown in Figs the auxiliary stops are arranged on the rear surface of the standard stop.

The thin stop is shown at 290 and the thick stop is approximately twice the thickness and is represented by the dashed lines 292. As indicated, both side surfaces of the stops 290 and 292 are beveled, as shown at 294, and permit engagement with one or the other other of the feeler arms 158, 162 in each working direction. These stops are for not determining the position of the saddle when making cuts, and therefore the tapered surfaces are desirable.

About accidental movement of the mooring saddle beyond the safe limits To prevent addition in any direction is a forward safety stop 296 provided which is disposed on the bearing arm 122 and extends into a position in which the forward sensing arm 158 comes into contact with it when the control carriage and the landing saddle has reached a fixed front limit of movement. On similar ones Way is a rear stop 297 on the opposite bearing arm 122 in one Arranged position in which the rearward sensor arm 162 comes into engagement with it, when the carriage and the saddle are the safety limit of backward movement achieved.

Referring to Figs. 27 and 27A, the operation is schematic of the middle feeler arm 154 reproduced when the feeler arm with one of the standard stops 270 engages. Assume that moving the feeler arm and Control slide, from right to left according to the forward movement of the saddle takes place. It is also assumed that the mooring saddle moves with faster or high speed moves forward before the point in time at which the feeler arm 154 engages the stop 270.

When the feeler arm engages the beveled surface of the stop, it is against the back of the machine in the one shown in dashed lines Moved position opposite the stop 270 in Fig.27. With this movement causes the feeler arm 154 the operation of the two switches 152 and 153 from their normal position in their opposite or drive positions. From this it follows a decrease in the speed of the drive motor under the control of the Cruise control valve 70, as indicated by the schematic in Fig. 217A, and the deceleration takes place at a substantially uniform speed, while the mooring saddle continues to move forward. Just before the antenna arm 154 reaches the end of stop 270; is the delay of movement within a certain way ends, and the mooring saddle continues to move over a move forward a short distance at low speed. The attack is just long enough to have such regulated delay with the extra part to ensure continued movement at low speed is caused, which is limited as possible, so that the shutdown of the lay-on saddle as quickly as possible and with a minimum of path length and with a constant Path length takes place. An appropriate length for the working surface of the standard fence turned out to be 3/4 ", and it takes about 1 / s of the time at which the saddle first came into contact with the feeler arm, up to the Time at which it is stopped.

As soon as the feeler arm 154 slides off the end of the cam 270, it returns over the full path to its original position, which is indicated by the dashed lines in the left side of the stop 270 in FIG. This operation releases both switches 152 and 153 and enables them to return to their original positions. This causes the lay-on saddle to come to a standstill, and since the lay-on saddle moves at a slow speed, the actual shutdown only takes place with a very limited widening movement on the order of about 1/10 mm, and since this takes place uniformly for all stops, this size can can be precisely determined with reference to the actual cutting work of the workpiece. Furthermore, the initial position of the feeler arm 154 can be determined by adjusting the bolt 186 so that it compensates for this widening movement, the actuation of the switches 152, 153 actually being caused somewhat before the end position of the stops, so that when the carriage and the saddle are finally stopped, they are exactly in the positions that are determined by the setting of the stops. If the stop is to be set in a certain position corresponding to a fixed position of the lay-on saddle, it is only necessary to deflect the feeler arm to one side by hand until the bearing arm 178 engages the head of the bolt 185 and the stop at the end of the arm in the distracted position. Then, when the arm is released, the correct command variable is introduced in order to actuate the control sufficiently far in advance of the final desired position so that when the saddle finally comes to rest, it moves. is exactly in the desired position.

Fig. 28 shows the condition which occurred during the return movement of the saddle and the feeler arm 154 takes place and indicates that during the return movement of the feeler arm is on its universal support to the front of the stop pivoted, as shown in dashed lines, and thereby passes the stop but has no effect on the control of the Process.

Figs. 29 and 29A schematically represent these conditions, which occur when a trim fence is used. As shown, the trim stop is 280 is provided on the front of the standard stop 270 and is set to that it overlaps the latter by a certain size to the desired length of the To create dressing.

In operation, with the carriage and feeler arm 154 engaging the standard portion of the fence in the forward direction of travel and at a rapid rate, the docking saddle decelerates in the manner described in connection with Figures 27 and 27A. When the feeler arm leaves the edge of the stop 270, it cannot go back all the way to its original position, but is stopped at an intermediate point as a result of the finishing stop 280. As a result, only switch 153 returns to its normal position, while switch 152 remains in the working position. The control circuits produced in this way enable the motor to be stopped in the same way with the same accuracy as described above. The first cut takes place after the stop, but after this cut has been completed, the contact saddle starts up at a slow speed instead of at high speed and continues at this speed as long as the feeler arm 154 rests against the finishing stop 280 . As soon as the feeler arm falls off the end of the dressing stop 280, it returns to its starting position, whereby the second switch 152 is released. By arranging the corresponding circuit controls, this work process also stops the motor of the lay-on saddle after only a short encounter corresponding to the size of the overlap between the stop 270 and the trimming stop 280, and the trimming cut or the trimming cut can then be made. However, when this cut is completed, the motor of the lay-on saddle starts up quickly and continues this movement until the next stop is hit.

With reference to the stops at the ends of the rod on which attack by the front feeler arm 158 and the rear feeler arm 162, respectively, is shown in FIG schematically the cooperating created between these sensor arms and an end stop Relationship, the standard stop 270 having the thin stop 290, the is attached to the rear of the stop 270. Both sensor arms are schematic illustrated how they cooperate with a single such attack; it is but it is obvious that when working the front feeler arm 158 with a stop cooperates at the front limit of movement, while the feeler arm 162 with cooperates with another stop at the rear limit of movement. These antennae arms are, as shown, preferably beveled on both surfaces.

When the feeler arm 158 moves over the bevel of the thin stop 290 is moved, only switch 156 is actuated, thereby reversing the Directional valve 54, thereby causing the motor of the docking saddle vice versa works to move the docking saddle backwards.

When the rear feeler arm 162 moves over the thin stop 290, only the switch 160 is actuated, resulting in a halt to the operation of the Motor of the saddle results.

FIG. 31 is a diagram similar to FIG. 30. She gives those Controls again, which correspond to the engagement of the feeler arms 158 and 162 be made with a thick stop 292. When the forward sensor arm 158 moves over the thick stop, it actuates both switches 156 and 157. Switch 156 reverses the motor of the lay-on saddle as described above, while the operation of the switch 157 is a working of the rod motor or motor 224 for rotating the selector shaft results in a working circuit to arrange this motor according to the description above.

When the reverse sensor arm 162 engages the thick stop 292, it causes the actuation of both switches 160 and 161. An actuation of the switch 160 causes the motor of the vertical saddle to stop as described above will. Actuation of switch 161 reverses the directional valve 54 and causes the saddle motor to operate in the forward direction begins.

In order to illustrate an operation which can be carried out with the control according to the invention, a number of diagrams which represent typical cutting operations are reproduced in FIGS. 32 to 36. As shown in FIG. 32, a stack of sheets of paper 300 is indicated which has four sides which are designated A, B, C and D , with side A being presented forwards against the knife and side C being presented with it the saddle 40 is in contact. In a typical setting for handling material of this type, the first stop rod 195 would have a standard stop 270 in the position corresponding to the first cutting line 301 near side A of the sheet material. When the lay-up saddle is in a rearward position, the sheet material would be placed on the table and moved back against the saddle so that when in the working position the first movement of the lay-up saddle would bring it forward until it rests with the first stop engages, whereby the lay-on saddle is stopped in position to make the cut 301.

After this cut, the saddle would be operated immediately, to advance the stack into position for the second cut as it goes through the position of the second stop on the same rod is determined. The operator rotates the stack by hand to bring surface D against the lay-on saddle, whereby the surface B is below the knife and in a position so that the line 302 is on the cutting line in which position the next cut will be made with the newly cut side A making contact with the side abutment 303 is located.

After completing the second cut at line 302 moves the saddle immediately forward to a front limit stop, which is embodied by a thick stop 292. This results in a reversal of the motor of the vertical saddle and a corresponding actuation of the rotary rod motor 224. As a result, the anchor saddle is returned to its rear position, whereby the Rod rotation motor turns the selector shaft to bring the second rod into the control position bring to. As soon as the saddle reaches a predetermined rear position, If the feeler arm 162 acts on a further thick stop 292, whereupon initially there is a halt in the rearward movement of the docking saddle, and then it will moved in the forward direction again.

In the meantime, the operator has turned the stack again, wherein this time the surface A is moved against the lay-on saddle and the freshly cut Surface B lies against the side abutment 303 and surface C extends outwards extends against the knife. The forward movement of the docking saddle is continued, until it engages a standard stop on the second control rod, whereby the stack is stopped in the correct position to make the cut 305 at the Surface C.

After the cut 305 has been made, the lay-on saddle takes its Forward movement up to a standard stop on the second rod again, while the operator rotates the stack around face D against the knife bring to. In this position, the cut 306 is made, and without movement of the stack by hand, the lay-on saddle then moves forward to a third Standard stop of the second rod, in which position the cut 307 is made.

After making this cut, the saddle moves against the front of the machine and gives the work material to the operator until it hits a front thick stop 292 that reverses the motor causes the vertical saddle and a corresponding operation of the rotary bar motor, to bring the third rod into the control position. The mooring saddle will then returned to a predetermined rearward position, where he was at another attacks thick stop to initially cause the lay-on saddle to stop and then move the docking saddle forward again.

In the meantime, the operator has put the work material into the in Fig. 36 rotated position shown, which now comprises two sections, and then moves the saddle up to a predetermined position, which by a Stop is determined by the third rod, which is a finishing stop. In this position, the cut 308 is made, and immediately after it The lay-on saddle is cut into the cut line at slow speed 309 moved forward position, whereupon the machine is operated, to make the trim cut. Then the saddle can be arranged to that it moves forward to a predetermined position which is determined by a thick stop is controlled to deliver the work material to the operator, to rotate the selector shaft to the first rod for a subsequent cycle in place and then return to a rearward position. In this rearward position, a thin stop is arranged so that the saddle is only stopped, but does not resume its forward movement, until the operator is ready to begin the next work cycle. If a thick stop is used instead of the thin stop, the Docking saddle reverses and moves to a first stop on the first rod forward to prepare for a second sequence of operations.

The above description is merely intended to provide a simple pattern, for example explain what the use of three different rods with control regarding Forward and backward movements of the docking saddle over a complete working cycle comprised of fast and slow movements of any size to a predetermined one Pattern of cuts to follow. It is evident that either a greater or greater a smaller number of movement levels and stop bars according to the particular material to be treated can be used.

It can also be seen that if a number of in slight Spaced cuts is desired, corresponding to a group From trimming cuts, special stops can be provided around the feeler arm 154 in its intermediate position and all the more to make provision for this sequence by slow forward movements of the docking saddle.

It can also be seen that since the positions of the stops of the control rods with the movements of the docking saddle in exact correspondence stand, it is not necessary that the setting be for a particular sequence of Operations on the machine. For example, the machine can be equipped with a Set of rods to be operated while a new setting is in another Set that is completely separate from the machine. Furthermore can the position of the stops can be determined by an auxiliary scale, with the exact Position of the stops in relation to the indicator mark 268 and the distance between the stops is determined by direct measurement.

Another advantageous feature is the fact that the bars 195 can be placed on the work material and that the various stops are placed on them by direct reference to the work material itself, thus eliminating the need for a scale or measuring. Such a setting is shown in FIG. 22, where a layer of work material is indicated at 315. The flat surface 316 (Fig. 20) of the control rod 195 is placed in contact with the work material with the indicator mark 268 in line with the left edge of the sheet. Assuming that a cut is to be made along line 317, the left edge of stop 270, which also has a flat rear surface flush with surface 316, is brought into direct alignment with line 317. Then, when the rod is inserted into the selector shaft and its axial adjustment to set the indicator mark 265, with the right edge of the work material resting against the lay-on saddle, the stop causes the lay-on saddle to come to a standstill in the position to make a cut at line 317.

In the circuit diagram of FIG. 37, the necessary electrical and cooperating hydraulic circuits are shown schematically. The positive pole of the control line is indicated at 320 and the negative pole at 322. The manually operated stop button is indicated at 33, and the manual control 27 for switching over from manual labor to automatic labor comprises, as shown, two switching arms 325, 326 in the form of a two-pole two-way switch. When these switches are set for automatic operation, they assume their positions indicated in full lines, and when the control 27 is set for manual operation, they assume the position shown in dashed lines. The forward speed control button 30 , as shown, includes a circuit closure switch 330 which first closes a low speed circuit when partially depressed, and usually has closed rear contacts 331 which open when the push button is actuated. When the push button is fully depressed, the contact arms 331 complete a quick control circuit.

The pressure switch 110 can close as soon as the pump 56 generates pressure, and thereby closes a circuit that can be followed from the positive pole of the line to the stop button 33, line 332, closed switch contacts 110 to the work coil of a relay 333, the other side of which with the negative pole of the line is connected. When energized, relay 333 closes all of its contacts 333 A, 333 B, 333 C and 333 D.

Assuming that the handwheel switch 27 is set and the push button 30 is partially depressed to allow slow forward movement, the following circuits can be followed. From the positive pole of the line through the shut-off button 33, line 334, contacts 156 of the forward limit switch, the closed contacts 335B of the reversing relay 335, through the closing switch 330, line 336, through the working coil of a relay 337 to the negative pole of the feed line. When this circuit is closed, the relay 337 is energized, opens its rear contacts 337B and closes its contacts 337A. Closing the contacts 337A closes an excitation circuit for the working coil of the relay 340, which leads from the positive pole of the line through the line 336 to the relay 340, the other side of which is directly connected to the negative pole of the line. This results in the energization of relay 340 which closes each of its contacts 340 A, 340 B and 340C. Then a circuit can be traced from the positive pole of the line 336, through the closed contacts 337A, the closed contacts 340C, the closed contacts of the switch 153, the line 341, the closed contacts 340A to the common line 342, from which a branch connection leads to relay 343, the other side of which is directly connected to the negative pole of the line. When energized, relay 343 closes its contacts 343A and thus directly connects from the positive pole through line 344 to the solenoid 345 of the control valve, the other side of which is connected to the negative pole of the line. This solenoid 345 is energized and operates the control valve 61 to set the pressure regulating valve 60 to full or high pressure for operating the motor of the buckle.

The other circuit from line 342 continues through contacts 333 A and 333 B and through line 346 to forward solenoid 64 and thence to the negative pole of the line. This moves the directional valve 54 in the forward position and the motor for the lay-on saddle is then driven at a slow forward speed. This operation continues as long as the push button 30 is held, but is turned off if the push button is released or in the event that the forward sensing arm 158 should engage and move the forward limit switch 156 to its other position.

In the case in which the push button 30 is fully depressed, an additional circuit is closed, the slow contacts 330, which remain closed, through the circuit closure switch 331, which is connected to the quick switch contacts 347, through line 90A and directly closed the quick solenoid 90, its other side connected to the negative pole of the lead. When energized, this solenoid attracts its armature and moves the speed control valve 170 to the high-speed position in the manner described above. A parallel circuit energizes the rapid relay 348, but its movement is ineffective when the control is in the "hand" position. If the push button 30 should be partially released, the quick solenoid 90 is de-energized and the motor is then decelerated in a controlled manner as described above and continues to operate at a slow forward speed until the push button is fully released.

To drive the docking saddle in the reverse direction when controlled by hand, the "reverse" pushbutton 32 is pressed by hand. This closes a circuit from the positive pole through the manual parking part 33, the line 334, line 349, through the normally closed reverse limit switch 160, through the push button 32 and through the line 350 directly to the reversing solenoid 65, the other side of which is directly connected to the negative pole connected to the line. A parallel circuit is closed to energize the reversing relay 351 which, when closed, creates a circuit directly from the positive pole of the line through line 344 to the control valve solenoid 345, thereby establishing full working pressure in the system as described above. The docking saddle is then arranged for reverse work at full speed.

If desired, make provision for the docking saddle to work forward to create only as long as the hand push button is pressed is preferable, Provision is made for the vertical saddle to continue working backwards for such a long time until it reaches the rear limit of its movement. For that purpose this is Holding relay 335 is provided, which is excited directly from the line 350 and which when the push button 32 is closed, its contacts 335A closes to the push button shunted and in this way the circuit conditions according to the above Description maintains. The landing saddle therefore continues its backward movement away, although the push button is released. When the feeler arm 162 at the rear Limit stop, the switch 160 is actuated, and the circuits as described above are de-energized, thereby shutting down the vertical saddle motor is caused.

Manual control of the rotary bar motor 224 can be effected by actuating the push button 35, which is also carried on the control panel 25. When this push button is manually operated, a circuit is completed from the positive pole of the lead through line 334, push button 35, line 352 to the reverse contacts 354B of a relay 354 which is usually de-energized during manual control; the circuit continues through line 355 directly to rotary bar motor 224, one side of which is directly connected to the negative pole of the line. A parallel circuit is completed through reverse contacts 253 to operate a hold relay 356. When actuated, relay 356 closes its contacts 356A to complete a circuit for energizing the rotary bar motor through line 357, thereby shunting push button 35. The rotary bar motor therefore continues to operate until the cam 250 has substantially completed one cycle of rotation, at which point it raises the cam switch 252, breaking the hold circuit and de-energizing it and allowing the rotary bar motor to stop. In this way, separate, complete working circuits of the rotary bar motor are established.

With reference to the conditions for automatic operation of the machine to determine a distance, the switch 27 on the control panel is thrown into the automatic position, in which the switches 325 and 326 their positions shown in full lines according to -Fig. 37 take. Closing switch 325 creates a circuit from the positive pole of the lead through shutdown button 33, lead 334, forward limit switch 156, reverse contacts 335B of reversing relay 335, lead 359, switch 325, leads 360 and 369, control switch 152, and lead 361 to the relay work coil 354, the other side of which is directly connected to the negative pole of the line. The relay 354 is then energized, closes its contacts 354A and opens its contacts 354B. Closure of contacts 354A creates a circuit from positive lead 360 through contacts 354A, lead 341, control switch 153 and lead 362 to the automatic starter switch indicated at 364. This switch is operated by a cam 365 carried on the shaft 366 which is preferably an integral part with the working means for the knife and clamp, e.g. B. with the main drive shaft, and one revolution of this shaft causes the knife to move up and down. Such a switch may conveniently be arranged to drive with respect to the movement of the knife, the cam 365 being adapted to close the switch contacts 364 when the knife returns to its normal position after a cutting stroke.

When contacts 364 close, the circuit continues through line 368 to the work coil of relay 340, the other side of which is connected to the negative pole of the line. When relay 340 closes, its contacts 340A are closed, continuing the circuit from the positive pole through line 360, closed contacts 354A, 340A, line 342 to relay 343 which, when energized, closes its contacts 343A, thus the control valve solenoid 345 to excite, whereby the full working pressure is established in the system. Meanwhile, the pressure switch 110 has closed its contacts and the relay 333 is therefore energized, therefore a parallel circuit is established from the line 342 through the contacts 333 A, 333 B and the line 346 immediately to the forward solenoid 64. The motor of the lay-on saddle is therefore arranged to operate in the forward direction.

Closing the relay contacts 340C brings the contacts of the automatic Switch 364 is shunted and maintains the circuit to the Energizing relay 340; however, this circuit remains via the control switch 153 closed as described above.

The closing of the relay contacts 340B provides a circuit from the positive pole of the conduit 360, line 369, control switch 152, line 361, switch contacts 340, B, line 370, back contacts 331, back contacts 337 B and through the line 348 unto the Schnellsteuersolenoid 349th A parallel circuit is also closed directly to the quick solenoid 90 to effect its actuation. When relay 348 closes, its contacts 348A shunt contacts 337B through switch 326, thus keeping the circuit closed with the motor of the lay-on saddle operating for forward movement and at high speed.

It is now assumed that the control arm 154 of the control slide when moving from left to right across the surface of the machine on one the standard stops 270 attacks. When he does this, the two switches will 152 and 153 actuated against their holding means in their other positions. That Opening the switch 152 immediately opens the excitation circuit 340, 354, 348 and the quick solenoid 90, which drives the motor of the docking saddle in a controlled manner as described above, its speed is reduced and then its Continues forward movement at slow speed.

While it is desirable to have a relay complete the circuits for actuating the forward solenoid 64, it is undesirable to have the relay open that circuit because of the delay involved and the possibility of changes in the amount required Time after which there would be noticeable changes in the size of the advance of the motor of the saddle according to the actuation of the control switch. For this reason, it is desirable to make a circuit change after it is closed by the relay so that the circuit is directly controlled by the switch in the control slide 120 in preparation for the shutdown of the lay-on saddle, and thus a quick and substantially smooth one To ensure opening time of the circuit, whereby a limited and substantially uniform advance of the motor of the anchor saddle is maintained, which can be compensated according to the above description in an appropriate manner in order to ensure accuracy and uniformity in the eventual stop position of the anchor saddle.

This is done by initially actuating the two switches 152 and 153 when the feeler arm 154 engages a standard stop. When actuated a new control circuit is established, which runs from the positive pole of the line to the Line 360 and 369, switch 152 in its raised position, switch 153, Line 374, switch contacts 333 B, and line 346 directly to forward solenoid 64 can be tracked. Relay 343 and thereby control valve solenoid 345 remain attracted by parallel excitation through contacts 333A. Working the switches 152 and. 153 takes place quickly, these switches are quick-closing and quick-disconnecting switches, and the aforesaid relays stay on for the very short time interval required to switch the circuit tightened in the manner described above.

When the feeler arm 154 passes the end of the standard stop, when he returns all the way back to his starting position, he guides the two of them Switches 152 and 153 back to their original positions shown in the diagram. This operation breaks the circuit to both the forward solenoid 64 as well as the pressure control solenoid 343 directly on switches 152 and 153, and the further work of the motor of the vertical saddle is stopped immediately, and the pressure in the system is also reduced. From the above it can be seen that under these conditions the plant is the same as the original is, and therefore relay 354 is also re-energized and the controls are ready to adjust the forward movement of the docking saddle at fast speed accordingly the closing of the auto starter switch 364, whereupon the next cutting process follows.

However, when the feeler arm 154 engages the trim stop, is it is desirable to take precautions that the motor of the docking saddle the first cut at slow speed and not at fast speed starts up. The introductory process is when the feeler arm is first attached to the Attacks the stand part of the finishing stop, the same as described above. if However, if he moves away from the end of the standard stop, he grabs the finishing stop, as indicated in Fig. 29 and only returns to its intermediate position, which results in the return of the switch 153 to its original position, while the switch 152 remains in its operative position. An opening of the switch 153 opens the circuit for the forward solenoid in the same way as previously described Way, and the motor of the vertical saddle is therefore stopped precisely in the position which is determined by the standard stop, so that the first cutting process can be carried out. However, when this operation is finished, the closed circuit by closing the auto starter switch 364 from line 360 to 369, switch 152 in up position through normal position of switch 153, line 362, contacts of automatic starter switch 364, line 368 to the excitation coil of the relay 340 be pursued, who then closes his contacts. Closing relay contacts 340C creates a shunt circuit around the automatic starter switch described above. The circuit can too from line 360 to 369, switch 152 in the up position to line 341 through contacts 340A and line 342 are traced to pressure control solenoid 343, which closes the control valve solenoid 345 in the manner described above. Accordingly, a parallel circuit is established through the switch contacts 333 A. and 333B and line 346 to forward solenoid 64. However, it can be seen that there is no circuit through the switch contacts 340 B and that therefore the fast relay 347 and the solenoid 90 remain de-energized. The system then works in the forward direction and at low speed to carry out the trimming according to Fig. 29 and 29 a.

When the feeler arm 154 clears the end of the trim stop 280, when the switch 152 returns to its normal position, the circuit is interrupted immediately to the forward solenoid. This results in the correct shutdown the motor of the vertical saddle in the desired position. It can also be seen that the parts have now returned to their original position, so that in the following Actuation of the knife the system in turn with forward movement of the system saddle works at great speed.

With reference to the operation of the forward limit switch and assuming that the forward sensing arm 158 engages a standard stop having a thin stop 290 on its rear surface, such engaging will only actuate switch 156 and leave switch 157 in its home position . Actuation of switch 156 closes a circuit from the positive pole of the line through line 334, switch arm 156 and line 376, switch contacts 333 C to line 350, from which an excitation circuit for relay 351 is closed, which closes its contacts 351 A when energized to close an excitation circuit for the control valve solenoid 345 so as to establish the correct working pressure in the system. A parallel circuit leads directly to the reversing solenoid 65 of the directional valve 54, which in this way creates the condition for the motor of the mooring saddle to work in reverse, and the mooring saddle therefore moves backwards at full speed. Another parallel circuit is provided for the exciter relay 335, causing its contacts 333A to close to complete a hold circuit through the reverse limit switch 160. It can be seen that when the carriage reverses movement, switch 156 returns to its normal position, but the previously established circuits remain closed by this reverse limit switch 160 so that the docking saddle continues its reverse movement until the rear feeler arm 162 hits a stop the rear engages, causing the switch 160 to open, thus stopping the backward movement of the carriage at the position determined by the backward limit stop. Assuming that this backward stop consists of a standard stop with a thin stop 290 on its back, then the lay-on saddle does not run in the opposite direction and starts moving forward again, it is only stopped at its rear limit of movement.

If, however, a thick stop 292 is provided, on which the feeler arm 162 engages at the rear limit of its movement, both switches 160 and 161 are actuated. This de-energizes the above-described circuit and therefore the reversing solenoid drops out and the motor is stopped in the above-described manner. In addition, a circuit is completed from the positive pole of the line through lines 334 and 349, switch arms 160 and 161, line 382, switch contacts 333 D and line 383 to relay 340, which is then energized. The closing of the relay 340 closes a parallel circuit from the line 383 through the contacts 340 C to the switch 153 in the normal position, line 341, switch contacts 340A, line 342 345 to the relay 343 and Steuerventilsolenoid Further, a parallel circuit to the switch contacts 333 A and 333 B closed to effect energization of the forward solenoid. There is also a circuit to energize relay 354 and through switch contacts 340B to energize fast relay 349 and fast solenoid 90, and this energizing circuit runs through switch arm 152 in the same manner described above. Therefore, if a thick stop is used at the rear limit of travel of the lay-on saddle, the lay-on saddle will stop first, then reverse and move forward at high speed regardless of the operation of the self-operated switch 364, and continues to move until the feeler arm 354 engages the stop as described above.

In the event that a thick stop is used at the forward limit, when the sensor arm 158 engages, not only the switch 156 is actuated in the manner described above, but also the switch 157 is actuated. This latter drive results in the completion of a circuit from the positive pole of the lead through actuated switches 156 and 157, leads 385 and 386 to return contacts 354B of relay 354, through lead 355 directly to motor 224 for rotating the rod. The motor for rotating the rod therefore begins to operate and its holding circuit is closed by the relay 356 in the manner previously described so that a complete rotation of the shift shaft is completed during the time during which the lay-on saddle is moving backwards. It can be seen that an accidental actuation of the switch 157 during the time of the forward movement of the lay-on saddle has no effect on the rotary rod motor because the circuit described above is completed by the return contacts of the relay 354.

It can therefore be seen that a completely automatic and selective Control system is created for the work of the mooring saddle, which are caused can move forward at high speed if a long way or who only move forward at a slow speed can if a short path or a trimming process is desired. In any case the positioning of the saddle is done with great accuracy and goes on in close accordance with the actual positions of the attacks the stop bars, and a deceleration from high speed to slower Speed takes place under constant control to a maximum deceleration speed to ensure that is compatible with holding the stack against the lay-on saddle is.

Furthermore, by selecting thick and thin stops on the Forward movement limit of the mooring saddle can easily be induced into only one return to the rear position without changing the setting of the selector shaft, so as to repeat its sequences of movements, using the same set of attacks used on a single pole. Optionally, it can be caused to To operate the rotary rod motor to turn the selector shaft, thereby the next following Rod depending on the desire to bring into working relationship to a predetermined type of To carry out work.

Correspondingly, you can choose the thin or thick ones Stops at the rear limit of movement of the docking saddle can be initiated, either stop if it is at the end of a complete work cycle, or it can be made to stop and reverse its motion, whereby the working circuit with either the same set of rod stops or the the next sentence is continued automatically. , This results in a control the movement of the saddle, which is extremely elastic and which is easy to handle of any type of work material, which is suitable quickly and accurately can be set and at which the setting to change treatment one type of work material to another type with a minimum of energy expenditure and time can be made with respect to the operator.

The term "landing saddle" is used more commonly in this context Term used in connection with machines of the kind shown here, es It goes without saying, however, that this expression does not refer to the particular location of the saddle moving the working material is limited relative to the knife and the saddle does not necessarily have to be behind the knife, but that the invention also includes an embodiment when the mooring saddle before or on; the side of the knife is arranged. The expressions »Fühlerarm« should also or "stops" comprise different forms of sensing elements which are mutually work together to control the movement and stopping of the docking saddle to accomplish.

The parts of the description that go beyond the patent application serve only for explanation and are not the subject of the invention.

Claims (5)

PATENT CLAIMS: 1. Stop bar program control for the stack feed, especially for the stop saddle in a cutting machine for paper, cardboard or dgL, with a parallel to the cutter bar, if necessary with auxiliary stops provided stop rod and a cooperating with the stops in relation to the stop saddle actuated, electrical switching contacts having slide, characterized in that the carriage (120) has two sensor arms acting on switches (158, 162) for the end positions of the stop saddle (40) and one arranged between these, for the cutting stops specific feeler arm (154) which is so arranged is that it is movable in the direction of the stop rod and transversely to this, as well the stop rod (200) at its drive-side end with locking (242, 244) and control elements (232, 250) is provided for the automatic transition to initiate and secure another stop row of the stop rod. 2. Program control according to Claim 1, characterized in that the stop rod a plurality of stops (270, 290, 294 in FIGS. 20, 24) carry the different ones Serve purposes, and the stops on the rod in selected positions relative to him are attached, and two of the stops (292, 294) a reversal of the direction of movement cause of the stop saddle (40). 3. Program control according to claim 2, characterized characterized in that stops receiving rods (195) each individual groups of stops and each stop rod (195) on the stop rod (200) fixed in predetermined angular positions, for example by means of slots (201) can be. 4. Program control according to claim 3, characterized by a plane Area (316 in Fig. 20) on the stop rod (195), which for an immediate Contact with the work material (315) is arranged, and by an indicator mark (268 in Fig. 22) on the rod (195) for alignment with the edge of the work material (315). 5. Program control according to claim 2, 3 or 4, characterized in that the stop rod (200) is arranged rotatably about its longitudinal axis in order to bring various of the stops into a working position relative to the sensor arms (154, 158, 162) . Considered publications German Patent Nos. 899 337, 720 221, 728 799, 667 952, 647 775, 608 742; USA. Patent Nos. 2,599,591, 2,539,373, 2,487,031, 2,213,068, 2,198 732, 2,053,499, 2,049,256.