DE1943843A1 - Adjusting device for the passage path on a feed device for flexible sheet material - Google Patents

Description

Patent attorney
Dipl.-Ing. Walter Jackisch

7 Stuttgart N, Menzelstrasse 40

Southworth Machine Company Corp.
Bortland / Maine, SA

: · Aug. 28, 1969

A 31 178 - fts

Adjustment device for the flow path

on a feed device for flexible "

Sheet material

The invention relates to an adjusting device for the flow path on a feed device for flexible sheet material, in which the sheet material is moved by at least one circulating belt conveyor to the object The invention also includes a working method to adjust the flow brw. Movement path from flexible sheet material in a device of the type mentioned.

In handling, handling and gathering of flat sheet material or the like, which is long a continuous flow path at a comparatively low speed moved, it has been known for a long time to remove starred sheets from the pass-through path with the aid of an actuating or switching device to deflect. Usually a distractor is used for this, a receiving plate or a guide rod used, these device members in the movement path of the

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advancing sheet material can be swiveled in, υ »grasp the leading edge of the sheets in question and deflect them into another path of movement. Such devices are known, for example, from US Pat. Nos. 1,489,166, 2,358,051, 2,815,949 and 3,206,191. Swinging Switching devices of this type have the disadvantage that the attack of the deflecting element on the leading edge of the sheet causes strong friction * and impact forces at higher throughput speeds, which can damage the sheet edges and lead to undesired changes in the position of the sheets within a stack. This applies to both individually and superimposed sheet material and in particular for soft, thin paper, for example also for carbon paper and the like.

Furthermore, US Pat. No. 3,348,839 discloses an actuating device known that instead of a switching plate, a pair of mutually parallel, upper and lower Has guide plates which are pivotably mounted to «convert the flow path. However, this facility is only suitable for slow moving single sheets, while in the passage of sheet material at higher speed and in the Passage of stacks of sheets through the tubular channel provided in this known device, the sheet guide lifted and an uncontrolled leaf movement distributed in all directions would occur.

The object of the invention is therefore to create an adjusting device to selectively change the flow path for individually successive sheets or stacks of sheets

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flexible material in terms of properties of the sheet material, in particular with regard to strength and flexibility, even at comparatively high throughput speeds, none or at least significantly reduced lens restrictions exist. The task extends dfcei also focuses on the flow control of successive stacks or the like, of superimposed, soft paper sheets, e.g. of curled Carbon paper or the like, this material not only being particularly flexible, but also a constant one Hold down and careful guidance against air currents, lateral Kandraibung and the like. Requires, both at both high and low feed speeds.

The inventive solution to the problem is characterized in the case of an actuating device of the type mentioned at the outset mainly through the following components bxw, feature

a) upper and lower endless suspension means for locomotion the individually successive sheets or sheet stacks along the Durchlaufpfadesι

b) a pair of supporting orphans or the like arranged opposite one another, which have a preferably form an infeed angle for the sheet material with at least one circumferential belt *

c) pivotable · holding means for · one of the two Carrying orphans, preferably for the upper carrier roller, to carry out an angle adjustment of the inner preferably the upper support roller with respect to the other support roller with a corresponding pivoting of the feed angle in a with respect to the

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Path offset position}

d) Adjustment means for the angle position of the pivotable Holding means for aligning the sheets along the flow path or in a predetermined angular position outside of the pass-through path.

For example, in such a device, two are mutually exclusive Carrying orphans or carrying orphans arranged opposite one another and interacting with circumferential guide or conveyor belts rolls provided with these tapes to set the feed angle for the sheet material, with the intake angle e.g. in front of one located in the course of the lower endless suspension element Receiving opening of a sheet removal station or the like. Is arranged. The top, with a corresponding band or several adjacent bands interacting orphaned carrying is e.g. around the axis of the lower carrying orphan a Noxmalstellung on the pass-through path in a slightly pivotable in front of the axis of the lower Tsgwalse arranged position, the feed angle being one below the passage path it as well as located inside the receiving opening and opposite to the axis of the lower orphan to the rear occupies an offset position. In this way, a deflection of the effective flow path along an arcuate, reached downward curved portion within the bands, both the upper and the lower band, the with the same speed, i.e. old of the sheet feed speed to run. In this way, everyone is Friction and braking as well as material stress on the leaves avoided by fixed guide elements. Furthermore, there is no gap in the sheet guide and in the sheet " holding down, whereby only a surface contact,

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on the other hand, there is no edge contact with the leaves. the the support rollers forming the suction angle are χ · Β. arranged so because the leading edge of the sheets is slightly deformed upwards when the normal throughput path is adhered to. In this way, a gap at the junction of the Aualenk path is bridged before the front section a passing sheet gets into this gap under its gravity. Preference is given to a bridging * - and deflecting member arranged in the region of the opening of the branching path and with the pivotable support roller arrangement coupled. Xn the normal position prevents this bridging and deflector, if necessary with the support of one air flow directed upwards, the leading edge of soft leaves falling into the gap at the branching point, Xn more swiveled Position forms the bridging and deflecting link a ffand section of the bogedJörraig running downwards Branch path on the back of the bxw through the upper band. Moved guide wall section formed by the upper trusses. In this position of the bridging member the leaves, which are bent downwards by the pivoted Einxugawinkel, are guided further down into the branching path.

In general, the device according to the invention has upper and high speed lower fastener tapes included in parallel arrangement next to each other Run over corresponding guide and drive rollers and the through path as well as the Hold down for the consecutive sheets bxw. Form a stack of sheets. Pivoting arranged Tagwalxen also form the branch and deflection point in this case for an arcuate, the nominal pass path branching path.

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The mentioned advantages in guiding and switching on the ^{: i} trajectory of sheet material result - possibly also independently of the special features of the device according to the invention - by the working method, which is also part of the subject matter of the invention. This process solution is mainly characterized in that the sheets or stacks of sheets are conveyed, preferably at high speed, along a horizontal path between upper and lower carrier belts with an infeed angle formed by opposing rollers, the sheets or stacks of sheets being in a first operating state in a straight line, preferably horizontally, and after an adjustment of at least one of the rollers forming the feed angle in a direction angled from the normal passage path, preferably downwards, into a separation path likewise formed by belt sections.

Further features and advantages of the invention emerge from the following description of exemplary embodiments based on dr drawings. Herein shows

Figure 1 is a side view of a high speed sheet transporter »With circulating endless belts and with a rather adjusting device Invention,

Fig. 2 is a plan view of an independent structural unit self-propelled actuating device that can be used in a production line according to the invention,

Fig. 3 is a rare view of the device straight Flg. 2,

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Flg. 4 is an enlarged side view of the invention Adjusting device old tapes, orphans and thus formed, adjustable Entry angle in the normal pass division as well

FIG. 5 shows a side view according to FIG. 4, but with pivoted draw-in angle and correspondingly rearranged flow path.

Genass Flg. 1 is the adjusting device according to the invention for example, in a low-speed belt conveyor 31 built into a continuous path 33 for the transport of monocoque blades 32. From this funding agency is only the »it of the adjusting device according to the invention 30 shown directly cooperating part.

The conveying device 31 comprises one which is not shown Delivery station for flexible sheets 32 made of paper or the like «whereby these are, for example, cut off from a supply roll Verslerungsblätter, cardboard box blank removed from a magazine or thin, curled sheets of paper or stacks of sheets, which successively along the Passage of 33 in the direction indicated by the arrow be transported. Here, the sheets or stacks of sheets lie on the upper section 34 of a lower endless suspension element 35. Hl · indicated in FIGS. 2 and 3, for example, stacks of sheets of smaller height, s.B. those made of twelve mono-cones 32, for storage · in the form of large stacks in two different receptacles 36 and 83 are funded. Likewise, en «also comes accordingly separate funding for a «further treatment

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into consideration, for example for punching, stitching, aligning, Bandages or the like.

A lower endless suspension element 35 is used in the example Belt conveyor is provided which consists of a plurality of mutual There is a spacing of belts 37 arranged next to one another and running over a roller set. This set of rollers comprises, for example, a deflection roller 38 and a drive roller 46 »In the case of the one shown in Figs. 2 and 3, independent ones Machine unit is this belt arrangement via its own drive connected to the drive roller 46, in which Execution according to Fig. 1 About the machine drive, not shown set in motion, for example at a speed of 150 to 300 m / min.

In the area of the path 33 of the sheet material is a Band support 41 arranged with an arcuate curved surface. As shown in the example, a support roller 42 is preferably used as a support roller whose cylindrical surface 43 rotating about the axis 44, the belts 37 run. The upper portions 34 of the straps 37 form a receiving opening when they run over the cylinder surface 43 45 for the sheet material within the flow path 33. From this receiving opening extends a branch path 48 which leaves through path 33 and which passes through corresponding sections 47 of the bands 37 are formed, in the side shown in FIG. 1 obliquely downwards Belt arrangement 51 is also provided belts 53 which are arranged parallel to one another and which are driven by the drive roller 46 are driven from via a drive belt connection 54 at the same speed as the belts 37 and

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whose upper sections 52 are seen in the forward feed direction form the last section of the flow path »33. The leaves or sheet stacks 32 thus run over the upper sections 34 of the binders 37 and after overcoming the receiving opening further over the upper sections 52 of the straps 53 into the receptacle 36.

Furthermore, an upper endless suspension element 55 is also provided consisting of strips 56 arranged next to one another, ait parallel to the upper sections 34 and 52 of the lower Belts arranged lower belt sections 58 are provided, "Oh, the latter extend over the entire passage path. The belts 56 also run over a corresponding one tfalzensats «it is a drive whale 57 and are with the same Speed as the belts 37 and 53 driven. the lower portion 58 of the straps 56 lie on top the sheets or sheet stack 32 and act as a hold-down device, whereby the sheet guidance counteracts the effect of occurring air currents even at high throughput speeds reliably maintained. The drive roller 57 is driven in the example by a gear 59 from a Utalenkwalze 61 of the belts 53 driven. In this way, there is inevitably a matching running speed of all Bands adhered to.

The band support 41 with its cylindrical guide surface 43 is opposite below the pass-through path 33 a tape hold-down 63 disposed; which is also an arcuate curved one, again preferably by a rotating support roller 66 has guide surface 64 formed. These guide surfaces or those arranged between them Belts HLden a feed angle 65 for the continuous

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Sheet material. It is especially to be pointed out that there is harmony with the inventive idea instead of the Einzugfrinkel forming support rollers 42 and 66 possibly also fixed support elements supporting the corresponding belts with suitable ones Guide surfaces can be used.

The support roller 66 provided in the example is theirs Axis 67 mounted in a pivotable frame 68, the pivot axis in turn through the axis 44 of the lower support roller 42 is formed «The upper support roller 66 can thus within a predetermined angle range around the axis 44 are pivoted forward, the distance between the surfaces of the two support rollers remains unchanged and in the catfish shown in FIG. 5 within the normal state straight through path between the band sections 34 and 58 a downwardly curved path section 69, i.e. a branch point within the pass-through path, is formed will. In their normal, the completely straight-through path assigned position is the support roller 66 old its axis 67 slightly in front of the axis 44 of the lower support roller 42 arranged so that the upper tape sections / sections slightly are pressed down and the leading edges 71 of the sheets or stack of sheets 32 when leaving the feed angle 65 be bent upwards and have overcome the receiving opening 45 at the high throughput speed before the upper blade sections can sink below the level of the pass-through path 33 under the action of their pivoting force. the Sheets or stacks of sheets are safely secured via the receiving opening 45 to the tape section 52 located on the opposite side of the receiving opening 45 and forwarded by the latter

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For the pivoting movement of the frame 68 about the axis 44 between the positions recovered «Fig. 4 and 5 is a power drive 72 with a joint 74 pivotable with respect to the machine frame pressure cylinder 73, whose Piston rod 75 is connected to frame 68 by a further joint 76. The pressure medium cylinder 73 is double-acting and can be connected to a pressure medium source, e.g. a prefil air source, connected or relieved. The solenoid valve 77 is in turn controlled by a photocell 78 which is arranged above the flow path 33 is and when the front edges 71 of the sheets or sheet stack 32 arrive by corresponding signaling the Pivoting movement of the frame 68 into the position according to FIG triggers and the sheets or sheet stack thus from the Through path 33 downwards into the receiving opening 45 and into the branch path 48. The pivot angle of the frame 68 and thus that of the suction angle 65 is approximately 30 ° here. Closes for error monitoring of the sheet material the operator after detecting a defective sheet or sheet staple manually by the photo cell 78 controlled circuit, whereupon the retraction angle 65 when a signal is given by the photocell in the aforementioned Heise pivoted and the defective sheet material in the branch path is directed. When executing according to Flg. 2 to 5 is the optical sensing direction with photo cell 78 or similar sensing means part of a counting circuit, with the help of which after scanning or reaching a predetermined number of sheets or sheet stacks 32 the Pivoting of the frame 68 or the suction angle 65 triggered and the sheet material is thus directed into the branch path.

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A swivel drive for the Rannen 68 can be used instead of ilnee Pressure medium motors like the example shown, a correspondingly controllable electromagnet can be provided. For sensing the leading edge of the sheet material, mechanical pushbutton switches with flexible or pivotable ones can also be used, if necessary Poor or similar means are used. These measures can also be used in conjunction with the application option already mentioned of fixed support elements with guides · * laugh 43 and 64. However, one is Do not xu prefer execution of the latter type in general,

Xn range of the with the corresponding pivoting position of the retraction angle bsw. of the upper orphan formed, down curved path section 69, the sheets or sheet stacks 32 with their upper and lower sides 81 and 82 are like in the area of the rest of the through-path «wiping the belt sections running in the same direction are clamped and are thus form-fitting and deflected into the branch path 48 with uninterrupted hold-down, the leading edges 71 with no fixed devices in contact step and are therefore not subject to any risk of damage.

In the embodiment according to FIGS. 2 and 3, there is the adjusting device 30 is provided with its own drive unit and can therefore inserted into a production line or the like will. Such a use costs, for example, the alternating filling of a predetermined number of sheets or stacks of sheets in two containers 36 and 83 into consideration, which pass through the No hall ρ fad 33 or the branch path 48 assigned. During transport into the inner container, the other container can be emptied and used for the next be prepared.

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The Bjfänder 37 of the lower endless support means 35 are at the embodiment of FIGS. 2 and 3 of a motor 84 via a reduction gear 85 and the latter with the Drive mechanism 46 connecting belt drive (see Fig. 3). Furthermore, in this embodiment, in the area of the branch path 48, there is a special dandy arrangement that acts as a hold-down device 86 bit, in turn, a plurality of endless belts 87 arranged next to one another are provided. The latter Belts run over the rollers 88, 89 and 91 indicated in FIG. 2, which correspond to the course of the branch path 48 are arranged. A tension roller 92 is also provided. The lower portions 93 of the bands 87 are in the area of the Branch path on the upper side of the sheet material and lead it into the container 83 while being held down Execution is particularly recommended for the transport of thin or soft paper stacks, whereby it is on a gentle Treatment and compliance with the aligned edge position of the individual sheets is important.

The belt assembly 86 is driven by the roller 89, which on the one hand by a gear with the drive roller 46 of the belts 37 and on the other hand via a belt drive 54 with the drive roller 61 of the belts 53 is connected.

In the case of the embodiment according to FIG. 1 as well as that according to FIGS. 2 to 5, 45 is in the area of the receiving opening a scäenkbaren bridging and guide member 94 is provided, which in its two pivoting end positions either additionally prevents the sheet material from falling into the receiving opening 45 secures or an additional safeguard for the deflection of the sheet material into the branch path 48 when leaving of the suction angle 65 and the curved track section 69 with the adjusting device 30 pivoted accordingly.

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The bridging and guiding element 94 comprises a support frame 95 extending transversely to the belts, which is pivotably mounted on the machine frame with a hinge 96 and is biased by a spring 97 into a normal position associated with the straight through path (see FIGS. 4 and 5). In this normal position, the member 94 is supported by a roller 98 on the pivotable frame 68 of the support roller. The position of the roller 98 can be adjusted to the respectively optimal bridging position with respect to the link 94 by means of a pin-and-slot connection 99. W is the effective portion of the member 94 a innerlalb the Aufnahroeöffnung 45 located, dreieckfönnige profile strip 101 with an upper bridging plate 102 which is fixed on the upper flange 103 of the profiled strip, and with a lower guide plate 104, the inclined according to the branch path 48 downward runs. Compressed air nozzles 105 fed via a hose 106 are provided in one of these plates or in both plates. The air flow directed upwards or downwards by these nozzles causes a contact-free support of the leaves following the normal flow path 33 in the area of the receiving opening 45 or an additional hold down or deflection of the leaves leaving the curved path section 69.

In the normal position of the frame 168 according to FIG the rear edge 107 of the bridging plate 102 in the vicinity of the guide surface 43, while the front Xante 108 of this plate a height, de »passage path 33 nearkoonende Lag · anniant. The front edges 71 of the sheet material can thus not fall into the receiving opening 45 and Are, as mentioned, by the air flow from the Nozzles 105 supported in the bridging plate 102 · This

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The effect is superimposed by the backward tilt of the frame 68 generated upward movement of the sheet material in the area of the draw-in angle

In the vegetable position 5 with pivoted forward Frame 68 or support frame 95 is located at the rear Edge 1D7 of the bridging plate 102, which is on the same side forms the upper edge of the guide plate 104, in a higher position near the pass-through path 33, while the Guide plate 104 extends obliquely downward parallel to the band sections 47 and thus the contact of individual, one Scattering movement of executing sheets with the belts 53 is prevented. The leading edges 71 of the sheet material are thus safely in the Abzwdgpfad 48 and in the Einzucklewinkel the Band sections 93, 32 guided

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Claims (8)

Expectations (1. Adjustment device for the flow path on a feed ^ device for flexible sheet material by at least one Endless··
circulating / conveying means, characterized by the following Components or characteristics a) Upper and lower endless carrying means for locomotion of the successive sheets or stacks of sheets along the path j b) a pair of oppositely arranged orphans or the like preferably provided with at least one circumferential belt suction angle for the sheet material biXbn; c) pivotable support means for one of the two orphans, preferably for the upper support roller, to carry out an angular adjustment of the one, preferably the upper support roller with respect to the other support roller with a corresponding pivoting of the feed angle in a with respect to the Through-path offset position » d) Adjustment means for the angular position of the pivotable support means for aligning the sheets longitudinally of the pass-through path a or in a predetermined angular position outside the pass-through path 009810/1353 2. Adjusting device according to claim 1, marked by the following features a) the lower endless support means comprises at least one circumferential belt guided over the lower support roller, which forms a receiving opening for a branch path on the back of the lower roller) b) the upper EndloB suspension element "comprises at least one with respect to the band of the lower Endloa-Tragraittels rotating at the same speed and in the same direction, guided under an upper day roller Belt, which with the lower belt forms a normal path for the sheet material? c) the support of the upper support roller comprises one around the Axis of the lower support roller pivotably mounted frame in which the upper support roller is formed at a single angle with the lower support roller i «tt d) in its position assigned to the normal flow path is the draw-in angle formed by the two support rollers slightly in front of the axis of the lower support orphan as well as below the level of the normal path arranged as well as in one on the back of the axle «of the lower day roller and again below the level of the normal flow path arranged adjusting ring in the area of the receiving opening of the branch channel educated) e) for the adjusting means around the lower Tifgwalsenachse swiveling bracket, a controllable power drive is provided 0 0 9810/135 3 3. Adjusting device according to claim 1 or 2, characterized in that that the support rollers are designed as freely rotatably mounted cylinders, that the Fndlos-Tragraittel each a set of continuous continuous formers with along the Have pass-through paths and belt sections moved through the fin zucklewinkel, and that within the lower endless suspension element at least one of the receiving opening and from the normal pass path at an incline to a Receiving station extending, forming a branch path Band section is provided. 4. Adjusting device according to one of claims 1 to 3, d% urch characterized in that the upper endless support means along the normal Durchlaufρfades over the receiving opening of the Branch path also extends and that the lower endless support means a calibration in the feed direction of the sheet material up to the receiving opening extending section and a adjoining this without any gaps, i! within the receiving opening downward sloping section, which forms the branch path provided with a separate tape hold-down device. 5. Adjusting device according to one of the preceding claims, characterized in that in the area of the receiving opening of the branch path, swiveling bridging and guiding means for at least partial covering of the receiving opening In the normal state as well as with this bridging and guide means, in operative connection, control means for adjusting the bridging and guide means between a bridging position assigned to the normal flow path and a deflection position assigned to the branch path are provided. 009810/135 3 - JC- -49- 6. Adjusting device according to claim 2 in conjunction with one of claims 3 to 5, characterized in that above of the feed path and in the area in front of the feed angle as well as sensing means arranged in front of the receiving opening for Monitoring of the leading edges of the sheet material passing through are provided anda that the power drive for the pivoting movement of the support roller holder for automatic formation a curved branch duct into the receiving opening curved track section is in control connection with the sensing means. 7. Adjusting device according to one of the preceding claims, characterized in that the adjusting means for determination the angular position of the swivel bracket to the pass-through path in the area in front of the Finzugswinkel arranged sensing means for monitoring the leading edges of the sheet material passing through have and that one is in operative connection with the sensing means upright drive for transferring the swivel bracket to a position with the retraction angle lowered to downward deflection of the sensed sheet ^ good from the pass path provided 1p · - · 8. Method for changing the path of sheet material within a feed device, in particular using an adjusting device according to one of the preceding Claims, characterized in that the sheets or sheet stacks, preferably high speed bits, along a horizontal passage path between upper and lower carrier belts formed by opposing rollers «· Einzucklewinkel be promoted, the sheets or sheet stacks in a first operating state in a straight line, preferably horizontally, and after an adjustment at least one 009810/1353 - sr- -JLO the rollers to be formed into angled in one of the normal pass path angled direction, preferably downwards, in a branch thread also formed by tape sections be guided. 009810/13 53 lee