DE2012115A1 - Device for capping protruding edge band ends - Google Patents

Description

PATENT LAWYERS 7 STUTTGART 1 .J.

DR-ING WOLFF H BARTELS long street 51

UK. U.N. YVULrr, n. Dakiclo 9Π191 IC telephone (07ii) 296310 and2 * 7295

DR. BRANDES, DR.-ING. HELD 4UIZlIO telex, 072 ^ 12

7508 hrr

Reg.-No, 122

Karl M. Reich Maschinenfabrik, Nürtingen, (Baden-Württemberg)

Device for capping protruding edge band ends

The invention relates to a device for capping the protruding ends of edge bands glued to workpieces, with a conveyor device for continuously conveying workpieces in the longitudinal direction. return movement of the tool across forth parallel to the conveying direction of the workpieces and in a transverse movement in the input and Aüstauchstellung of · tool to the conveying direction of the workpieces and is supported reciprocally ^, wherein a control surface is provided, which in dependence on the advance of the carriage its Caused transverse movement in the immersion position and back in the Aüstauchstellung.

In a known device of this type, a fixed link designed as a guide groove is provided as the control surface, into which

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a guide pin provided on the slide engages. In order to be able to cut the front end of the edge band, this must be done the movement into the immersion position and back into the emergence position during the advance movement of the tool slide because the tool is already out of engagement with the return movement of the slide the workpiece must be moved out. The known link guide now has the disadvantage that when returning the When the carriage returns to its starting position, the transverse movement is inevitably carried out again. You have to be -kjinj) t.eji_ device with the backward movement of the slide Wait in its starting position until the workpiece has passed the tool over its entire length. Only then can the tool with the slide return to its starting position be moved back / which requires a certain amount of time. Within that time, the rear end has the machined workpiece has already moved a considerable distance without a new workpiece to the Caps of the front Umleimerendes could be brought up to the tool, otherwise this front end over the Position would be conveyed out at which it must be in order from the tool starting from its starting position the immersion movement to be able to be cut. So it arises between the rear edge of a workpiece and the front edge of the next workpiece is a relatively large distance, that of the known device must be observed in any case and by which the performance of the device is severely impaired.

The known device uses its own on its own slide to cut off the rear edge of the glue,

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Nice tool that, when the slide moves forward into the immersion position, when the slide moves back is moved back into the exchange position. Here too does the well-known backdrop control have a disadvantageous effect, because with the approach of a new workpiece one must in any case wait until the tool at its return movement is completely moved out of the area of the workpiece. - "

The invention is based on the object of a device. - _{To create N} for cutting the protruding ends of the edge banding, that is to say, to which the workpieces can be fed to the tool with the smallest possible distance from one another. This means that the tool, which is returned to its exchange position in a known manner at the end of the forward movement of the slide, can now be immediately moved back to its starting position without having to fear that at this' Rü.ekbeviegung of: Schlitteiis 4 could ^ ^r Ph, the tool result in damage to the workpiece m.

Bie invention can be combined ψ ±% egg-known ^ ulissensteuerung by ¥ ^ he _irHlichen? that & ie = Kvilis seiiSs ^ euerung a first setting for the Querb.ewegung vjnd Eipe second link as H§lt ^ has eip.riehtung and that both scenes are connected at their end by switches.

the zv ^ el | e ^ lisse during the cusp movement However, e§ is particularly advantageous.

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a cam gear for the transverse movement

to be provided with a curve, a button and a pressing device ·., Which presses the button against the curve while the slide is moving forward. After completing the forward movement, so when the carriage has reached its exchange position again, / then by the holding device in this Ausauchstellung held until it has been returned to its starting position. In an advantageous embodiment, a holding device in the end positions the longitudinal movement of the slide switchable bolt can be provided that the slide during its return movement locked in its exchange position and unlocked again when the starting position is reached. A spring can be provided as a pressing device, which presses the button against the curve.

In a further advantageous embodiment of the invention a double-acting lifting cylinder can be provided as a pressing device and at the same time as a holding device, the switch that can be switched by the carriage during its forward and backward movement for its function as a holding or pressing device is switchable. This has the advantage that the device with commercially available components, e.g. can be equipped with pneumatic, double-acting lifting cylinders and valves. At the same time this is the advantage is achieved that the compressed air available in devices of this type used by the companies is utilized can.

For the device to function properly, it is important that the slide is in its guides, as is known two Elnahder parallel guide rods each for the longitudinal and Transverse movement are used, is properly guided and that

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no disguises can occur »In a further advantageous embodiment of the invention, to ensure always perfect and precise guidance, the slide rests on one of the parallel guide rods by means of two bearings and on the other guide rod by two opposite points of the rod , is guided at right angles to the rod axis adjustable sliding pieces. The bearings for one rod can be aligned very easily and practically without tolerances. The guide means ^of: sliding along the second rod permits in respect of mutual arrangements of the rods a relatively large tolerance must be feared in this case without jamming. In addition, the adjustability of the sliding pieces has the advantage that the inclination of the tool can be perfectly aligned before the device is started up without the need to adhere to particularly precise tolerances during manufacture *.

Continued on page

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The invention is based on an embodiment shown in the drawings Device for capping the protruding ends of edge bands glued to workpieces explained in detail.

Show it:

Fig! and FIG. 2 shows a side view and a top view, respectively, of the exemplary embodiment;

3 and 4 sections along the lines III - III and IV - IV in FIG. 2.

The device shown has alo conveyor for the continuous conveyance of workpieces 1, at their one edge of a band 2 is glued with protruding ends 3, a link chain 4, which during the Conveying in the direction of arrow 5 rotates. To cap the edge 3 protruding at the front, a Circular saw 6 is provided, which is arranged together with its drive 7 on a carriage 8, which is for a transverse movement into the in and out position of the circular saw blade 9 along guide rods 11 and 12 on a carriage 13 is stored. The carriage 13 is parallel for longitudinal movement for moving the circular saw 6 back and forth to the conveying direction 5 of the workpiece ι on two guide rods 14 and 15 slidably mounted parallel to Conveying direction 5 the workpieces are fixed in a stand 16

To the carriage 13 in the longitudinal direction, so parallel to Transport direction 5 of the workpieces χ, move back and forth to be able to engage the piston rod 17 of a double-acting pneumatic lifting cylinder 18 on the carriage 13, which is on

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Stand 1.6 is stored. For the transverse movement of the Carriage 8 is a double-acting pneumatic on carriage 15 Lifting cylinder 19 is supported, the piston rod of which engages the slide 8. To control the transverse movement from the exchange position shown in Fig. 2 in the Immersion position of the circular saw 6 is on the stand 16 a Curve 21 provided with a button, namely one Sensing roller 22 cooperates, which on the carriage 8 by a vertical axis is rotatably mounted * For reasons of clarity the curve 21 is shown interrupted in Fig. 1 and the feeler roller 22 is completely omitted *

To the carriage 13 during the cutting process in synchronism To move forward with the workpiece 1 is one in the path of the workpieces 1 as a stop engaging driver 23 (Fig «3) provided at the top of a vertical Bolt 24 is attached, which is mounted in a vertical guide 25 mounted in the carriage so that it can be moved up and down is. A button 26 designed as a pin is provided on the bolt 24, which is connected to a button on the stand 16 • attached curve 27 cooperates. On the lower end of the bolt 24 acts this upwards and thus the Button 26 on the curve 27 pressing spring 28,

As a switch to control the pneumatic lifting cylinders 18 and 19 are two pneumatic pulse generators 31 and 32 and a four-way roller lever valve 33 is provided. the two pulse generators 3ί and 32 sieüexia one in the Zeiehhuüg Negatively controlled impulse valve, not shown with four outputs * In de * in Fig. 2

The rest and shutdown rate of the weighing device shown in the figure 13 and of the slide 8, the pulse generator 3t is activated by a device 34 (Fig; 3) provided on the weighing machine I3, both cylinder spaces of the Hubz ^ iinderg Ϊ8

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are released and the lifting cylinder 19 is acted upon in such a way that it presses the slide into the immersion position, so that the feeler roller 22 rests against the curve 21 with pressure. As soon as a workpiece l takes the driver 23 with it, the pulse generator 31 released, but initially nothing changes, so that during the forward movement of the carriage 13 of the slide corresponding to the course of the curve 21 towards the workpiece in the immersion position the circular saw 6 moves and this thereby cuts off the protruding front end 3 of the edge band 2. As soon as the feeler roller 22 has reached the lowest point of the curve, the roller lever valve 33 is actuated. 0t This has the consequence that the lifting cylinder 18 for the longitudinal movement in the conveyor 5 of the workpiece applied and the lifting cylinder 19 is reversed for the transverse movement so that the carriage 8 from the workpiece is moved back into the exchange position of the circular saw 6.

By acting on the lifting cylinder 18 for the Forward movement, the driver 23 rushes ahead of the workpiece and so moves away from the front edge of the Workpiece. As soon as the button 26 reaches a step 35 of the curve 27, the driver 23 is against the α force of the spring 28 vertically downwards under the workpiece ι moves. Immediately thereafter, the second pulse generator 32 is actuated by the carriage 13, which is not shown negatively controlled impulse valve switches. This has the consequence that the two cylinder chambers of the Lifting cylinder 19 for the transverse movement and the rear cylinder space of the lifting cylinder 18 for the longitudinal movement are vented and the front cylinder space of the lifting cylinder 18 is acted upon with compressed air for the return movement so that the carriage 13 from the piston

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rod 17 is moved back to its initial position. The circuit is made in such a way that the release of the roller lever valve. 33 has no effect. The slide 8 is in this case by the friction in its guide and by the friction of the piston in the lifting cylinder 19 held in its position holding the circular saw blade 9 in the exchange position "

As soon as during this return movement the button _26 ...;.,

Level 35 has reached, the driver 23 is through the Force of the spring 28 moved back up. In the meantime, however, the workpiece 1 is off the link chain 4 has been further promoted, so that the driver 23 now abuts the workpiece 1 from below. So here the workpiece surface cannot be scratched or damaged by the driver 23 is on the driver one at the top and one pointing in the conveying direction Side protruding roller 36 rotatably mounted, by means of whose driver 23 is now on the underside of the workpiece. 1 is present. As soon as the rear edge of the workpiece Has reached roller 36, the driver 23 moves upwards, so that then the roller 36 rolls around the rear lower corner of the workpiece. This achieves that the evasive movement of the driver 23 does not damage the workpiece and with "the possibly Edge band 2 not yet fully glued at all does not come into contact. .

When the carriage 13 has reached its starting position, the pulse generator 31 is again actuated by the cam 34, so that the negatively controlled pulse valve is reversed so that both cylinder chambers of the lifting cylinder 18 are vented for the longitudinal movement and the lifting cylinder 19 is acted upon for the transverse movement,

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that the feeler roller 22 is pressed against the curve 21. As soon as a new workpiece. With its front edge meets the driver 23, the just described begins Vorgan «anew.

Continued on page

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- ti -

For cutting off the end of the edge protruding at the rear 2, a similar device is provided on the same stand 16. To avoid repetition, those parts of the device described below are designated by reference numerals around one hundred are larger than the reference numbers of the corresponding parts of the device for capping described above " the protruding edge strips at the front ..

On the same guide rods 14 and 15 is also here a carriage 113 slidably mounted, which leads to the:

Guide rods 14 and 15 vertical guide rods ■ m

111 and 112 carries a carriage 108 on which a '"" Circular saw 106 is arranged with a circular saw blade 109 and a drive 107.

For the longitudinal movement of the carriage 113 and for the transverse movement of the slide 108 are also here; one pneumatic each Lifting cylinder 118 or 119 is provided. To the The immersion movement of the slide 108 is controlled by a curve 121, which is connected to a feeler roller 122 cooperates on slide 108 *

Instead of the driver 23, a button is provided here,

hen, which is a two-armed lever with arms 123 and 124 ( and is rotatably mounted about a horizontal axis 125 provided on the carriage 113. By a Restoring force, e.g. the excess weight of the arm 123 above the weight of the arm 124v, the button 123, held in the position shown in Fig.3, in which the upper edge of the arm 1-24 as in the conveying direction 5 of the workpieces rising ramp in the path of the workpieces 1 intervenes. At the top of edge 126 is one Should 136 be rotatably mounted. The other era 123 of the

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Button 123 »124 has an upwardly open slot-like Recess 130, which is used to lock the carriage 11? is provided for the engagement of a pin 137, which extends in a horizontal plane perpendicular to the feed direction 5 and is attached to the stand 16 is. The arrangement is made so that when a workpiece 1 with its front edge on the upper edge 126 of the arm 124 strikes, the button 123, 124 around the Axis 125 is pivoted clockwise in FIG. 3, so that the pin 137 engages in the recess 130. This locks the carriage 113.

To control the two pneumatic lifting cylinders 118 and 119 is a positive, not shown in the drawing controlled pulse valve provided, which in turn is controlled by two roller lever valves 131 and 132, the be actuated by the button arm 124 or the carriage 113 «

The mode of operation of the device for capping off the ends of the edging protruding at the rear is as follows. In the initial position, in which no workpiece 1 has yet reached the button 123f 124, the lifting cylinders 118 and 119 are pressurized with compressed air in such a way that they are held in their retracted position in which the carriage 113 moves into the Pig. 1 and 2 are in its left end position and the carriage 108 is in its position holding the circular saw blade 109 in the exchange position. As soon as a workpiece 1 touches the edge 126 of the button arm 124, the button 123, 124 is moved around the Acbee 125 after Pig. 3 is pivoted clockwise, whereby it, as already stated above, locks the Ytegen 113 on the pin 137 and at the same time actuates the roller lever valve I3I. As a result, the positively controlled pulse valve is switched _f so that now the two cylinders 118 and 119 for

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the forward and backward movement can be applied. These "Acting on the two lifting cylinders initially has no effect, because the lifting cylinder 118 for the longitudinal movement through the engagement of the pin 137 in the recess 130 is locked and because the carriage 108 rests against the curve 121 with its feeler roller 122. But as soon as the rear edge of the workpiece 1 has the role 136 has happened, the button 123, 124 pivots counterclockwise to its starting position and gives the Car 113 free. Since the button 123, 124 is in contact with the rear edge of the Y / piece 1, the moves Carriage 113 at the same speed as workpiece 1., so that the "" "~ V_J Einschnittsstelle of the saw blade 109 in the edge band 2 precisely defined is. The slide 108 can now move through the curve 121 perform controlled transverse movement in which the circular saw blade 109 is moved into the immersion position, wherein the protruding end of the edge band 2 is capped off. Once this is done, the roller lever valve will 132 actuated, the positively controlled Pulse valve switches over and causes a simultaneous return of the carriage and the carriage, so that the circular saw blade IO9 is moved on a diagonal If the circular saw blade is immersed at greater depths 109 here it must be feared that the next workpiece 1 from the circular saw blade IO9 moved back can be injured, can at an alternative in which Embodiment not shown in the drawing can be provided that the lever valve 132 initially only reverses the direction of the cylinder 119 for the transverse movement of the slide 108 and only when the slide, has reached its retracted position, the 'pressure cylinder 118 for the return movement of the carriage 113 Is redirected. .

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In another modified embodiment, not shown in the drawing, instead of the open Curve 21 and 121 a gate control can be provided. This gate control has for the transverse movement of the Carriage 8 or 108 during the forward movement of the carriage 13 or 113 a first backdrop, .whose course of the Curve 21 or 121 corresponds to and for the return movement of the carriage 13 or 113, a holding device acting as a holding device second backdrop that holds the carriage 8 or 108 in the exchange position. Both scenes are here connected at their ends by switches so that during the forward movement of the carriage 13 or 113 the first and at the return movement the second backdrop are effective. In this embodiment there would only be lifting cylinders for the Car 13 or 113 required.

In another embodiment, with an open curve · 21 or 121 can be used as pressure means for pressing the follower rollers 22 or 122 to the curve 21 and 121, any pressing means, _ζ β Β <> a spring, may be provided. A latch that can be switched in the end positions of the carriage 13 or 113 can be provided as a holding device, which locks the carriage 8 or 108 'in the exchange position during the return movement of the carriage 13 or 113.

'To-the carriages 8 and 108 on their guide rods 11,12 and 111,112 and wagons. 13 and 113 on theirs Guide rods 14,15 and 114,115 flawless and accurate To be able to lead and to avoid jamming with certainty is every sled and everyone Trolley mounted on its guide rods like the one in 4 shows the support for the carriage 108 is. The carriage 108 is here on the guide

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support rod 111 in the middle of two bearings at both ends of the carriage 108 stored. One such camp is HO in Figure 4 for the storage of the carriage 113 on the guide rod 15 shown. On the other guide rod 112, the carriages are diametrically opposed to one another opposite points of this rod with two sliders 141 and 142, which are adjustable at right angles to the rod axis. The two sliders 141 and 142 are in one of rods 111 and 112 vertical plane which intersects the rod 111 approximately in the middle between the two bearings of the carriage 108

The two bearings for the rod 111 can be very Align easily and practically without tolerances. the Guiding the carriage 108 on the rod 112 by means of the Sliders 141 and 142 allowed, in terms of mutual Arrangement of the two rods 111 and 112, a relatively large tolerance, without having to fear jamming. In addition, the Adjustability of the 'sliding pieces has the advantage that it makes the inclination of the tool very easy and accurate can be aligned. In the illustrated embodiment, the sliders 141 and 142 are for the adjustment can be designed as a screw bolt *

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Claims (6)

Claims 1) Device for capping the protruding ends of UmIeimern glued to workpieces with a conveyor for the continuous conveying of workpieces in the longitudinal direction of the edge band and with at least one tool, which is arranged on a slide, which in a longitudinal movement for the Moving the tool forwards and backwards parallel to the conveying direction of the workpieces and in a transverse movement in the immersion and removal position of the tool is mounted to move back and forth transversely to the conveying direction of the workpieces, with a control surface is provided, which depends on the forward movement of the carriage in its transverse movement caused the immersion position and back into the exchange position, characterized in that a holding device is provided which holds the carriage (8, 108) during its return movement in the exchange holds. 2) Device according to claim 1, with a gate control characterized in that the backdrop / S control has a first setting for the transverse movement and a second setting as a bathing facility and that both connecting rods are connected at their ends by switches through which the first setting is effectively included when the carriage moves forward and the second setting when moving. 109839/0165 OBlOfNAL INSPECTED _ _t7 _ 2012 71 5 3) Device according to claim 1, characterized in that a cam gear with a cam (21, 121) a button (22, 122) and a pressing device (19, 119) are provided, which the button while the carriage is moving forward (8, 108) pushes against the curve. . . · ' 4) Device according to claim 3, characterized in that a locking device which can be switched in the end positions of the longitudinal movements of the slide (8, 108) and which locks the slide in its exchange ' A position during its return movement is provided as the holding device. · Γ. 5) Device according to claim 3, characterized in that that as a pressing device and at the same time as a holding device a double-acting lifting cylinder (19, 119) is provided, which by rom slide during its back and forth movement switchable switches (31r 32, 33; 131, 132) for its function as Holding or pressing device is switchable « 6) Device according to one of the claims 1 to 5, with two parallel guide rods each for the longitudinal and transverse movement of the slide, characterized in that the slide (-8, 108) is on one of the parallel guide rods ( 111) by means of two bearings (140) and on the other β guide rod (112) by two at opposite points of the rod abutting, at right angles to the bar axis adjustable Gleitstiicke (141, is performed 142). ■ ·: *> Ά V - ■ - .109839 / 0165