WO1992021602A2 - Stofflegemaschine - Google Patents
Stofflegemaschine Download PDFInfo
- Publication number
- WO1992021602A2 WO1992021602A2 PCT/EP1992/001171 EP9201171W WO9221602A2 WO 1992021602 A2 WO1992021602 A2 WO 1992021602A2 EP 9201171 W EP9201171 W EP 9201171W WO 9221602 A2 WO9221602 A2 WO 9221602A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fabric
- guide
- machine according
- laying machine
- web
- Prior art date
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/02—Folding limp material without application of pressure to define or form crease lines
- B65H45/06—Folding webs
- B65H45/10—Folding webs transversely
- B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
- B65H45/103—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile by a carriage which reciprocates above the laying station
Definitions
- the invention relates to a fabric laying machine, in particular a fabric laying machine by means of which a fabric web can be laid out in the form of individual layers by means of a relative movement to a laying table, comprising a fabric specification device which specifies the fabric web in a controlled manner in accordance with the relative movement of the fabric laying machine to the laying table. and a laying unit with a cutting device having a cutting knife.
- Such fabric laying machines are known from the prior art.
- the cutting device is designed such that it has a rotating knife which is moved across the fabric web to cut it off.
- the invention is therefore based on the object of improving a fabric laying machine of the generic type in such a way that the cutting off of the fabric web can take place as quickly as possible.
- the cutting knife is a rotating endless belt knife with a cutting strand extending across the entire width of the fabric web between two deflection drums and in that the cutting strand is provided with a Flat side rests on a guide.
- the solution according to the invention creates the prerequisite for the use of an endless belt knife, namely in that the cutting strand lies against a guide with a flat side and this guide thus contributes to guiding the cutting strand without fluttering, so that the cutting strand in the It is able to cut through the entire width of the fabric at the same time.
- the guide can in principle rest on each of the two flat sides, ie the inner or the outer flat side of the endless band knife.
- a return strand of the endless belt knife extending between the deflection drums also bears against a guide.
- the guide comprises an abutment element which extends along the flat side and abuts against it with an abutment side.
- the contact element is preferably a plastic element.
- the investment side can in principle be one level. Particularly good management properties can be achieved if the system side is provided with elevations. Particularly expedient forms of the elevations are linear elements.
- the elevations completely enclose intermediate regions lying deeper.
- the contact element is a plastic tape.
- the plastic belt is held tensioned by a tensioning device, thereby being taut in the longitudinal direction, but still has a certain flexibility to vibrate the endless belt knife to dampen.
- magnets which attract the thread are advantageously arranged on a side of the contact element facing away from the strand.
- the magnets are formed by a permanent magnetic tape. No details have so far been given regarding the design of the endless belt knife. However, in order to be able to dimension the deflection drums as small as possible, it is advantageously provided that the endless belt knife has a maximum thickness of 0.2 mm or less.
- the endless belt knife is advantageously not made of knife steel, but of a softer steel, which also offers the possibility of butt welding it.
- the endless belt knife runs over the two deflection drums arranged on both sides of the fabric web and that a deflection drum is rotatably held on a drum support which is slidably mounted opposite a frame of the laying unit and which is directed away from the other deflection drum is spring loaded by a tensioning device.
- drum carrier is spring-loaded by a spring assembly which is supported on the one hand on an annular flange and on the other hand on a head of a tie rod.
- the tie rod is adjustable so that if the position of a marking at the entrance of the reference marking connected to the ring flange matches, the endless belt knife has the correct tension.
- a belt knife grinding device is arranged in the region of a deflection drum.
- the band knife grinding device comprises a free-running grinding wheel, the grinding surface of which can be placed obliquely to the flat sides against the endless band knife.
- the grinding wheel has a hollow cylindrical grinding area, the end face of which forms the grinding surface.
- the ring surface is preferably placed against the endless belt knife in such a way that the ring surface forms a grinding point with a circular segment.
- the band knife grinding device has a counter bearing to the grinding wheel, on which the endless band knife can be placed with the flat side facing away from the grinding wheel.
- This counter bearing is expediently designed in such a way that it extends adjacent to the cutting edge in order to deburr the cutting edge.
- the counter bearing is preferably arranged so that it follows the grinding point in the direction of rotation of the endless belt knife.
- the deflecting drums are preferably provided with a hard tissue covering on which the endless belt knife runs.
- the object according to the invention is also achieved according to the invention in a fabric laying machine of the type described at the outset in that the cutting knife extends transversely to a feed direction of the fabric web over the entire width thereof with a cutting edge facing the fabric web that a guide device is provided which in a first guide position guides the fabric at a distance from the cutting edge and in a second guide position guides the fabric relative to the cutting edge in such a way that the cutting edge passes through the fabric so that the transition from the first guide ⁇ rail to the second guide rail the fabric is separable.
- the fabric laying machine is advantageously provided with a holding device for holding the fabric web, the holding device also being automatically operable to hold the fabric web, in particular its cut off End to hold on.
- the holding device holds the fabric web against cutting in the feed direction after severing, it being provided in particular that the fabric web is held immediately after it has been severed.
- the holding device holds the fabric web in the period from cutting through to a new application, since when cutting, there is still a defined position of the fabric web and thus this defined position is maintained until it is newly applied, so that in the case of automatic operation, a known position of the severed fabric web can always be assumed.
- the fabric laying machine according to the invention works with a catcher, it is expedient if the holding device holds the fabric web in the period from cutting through it until the fabric web is gripped by the catcher. When the catcher is actuated, it can thus be assumed that the web of fabric with its severed edge is in a defined position, so that a secure grasping of the web of fabric by the catcher is also guaranteed.
- the holding device holds the fabric web on the laying shovel in order to minimize the distance between the edge of the fabric web formed during severing and the point at which the fabric web is held on hold and thus exclude errors in this area.
- the holding device holds the web of material close to the cutting knife, so that the distance between the edge of the web of material which has arisen during cutting and the point at which it is held by the holding device is the smallest possible.
- the holding device has a holding element which is separate from the guide device.
- This holding element can preferably be brought from an inactive position into an effective position by means of a drive, in which it holds the fabric web, wherein the drive can be an independent drive.
- the holding element can be brought from the inactive into the active position by the guide device.
- the holding element can be fixed in the active position so that the guide elements move with respect to the movement of the guide device, when the holding element has reached its effective position, the actuation of the holding element no longer has to be taken into account.
- the structurally simplest solution provides that the holding element can be fixed in the active position by a catch.
- the guide device according to the invention can be designed in a wide variety of ways.
- it is possible to provide an element which only presses the fabric web into the cutting knife such a pressing of the fabric web into the cutting knife being possible in the simplest case by an element acting on one side thereof .
- the guide device has first guide elements following the cutting knife in the feed direction and second guide elements following the cutting knife in the feed direction, and if the guide elements guide the fabric web in the first guide position at a distance from the cutting edge and in the second guide position relative to the cutting edge so that the cutting edge passes through the fabric so that the fabric can be severed at the transition from the first guide position to the second guide position.
- the first guiding elements form the holding device.
- first guide elements provide that the first guide elements guide the fabric web freely displaceably in a feed position in a feed position and hold the fabric web immovably fixed in the feed direction in a fixing position.
- the second guide elements also guide the fabric web freely displaceably in a feed position and keep the fabric web immovably fixed in the feed direction in a fixing position.
- the cutting knife In the context of the solution according to the invention, it is in principle possible to move the cutting knife relative to the guide elements or the guide elements relative to the cutting knife.
- the first and the second guide elements can each be moved from the first guide position into the second guide position on their own movement path relative to the cutting edge, that is to say that the guide elements are moved while the cutting knife is stationary and that the guide elements each have their own trajectory.
- a particularly advantageous embodiment of the solution according to the invention provides that the first guide elements can be brought from the continuous position into the fixing position in the first guide position.
- the second guide elements can also be brought from the continuous position into the fixing position in the first guide position, so that with the first as well as with the second guide elements before the transition to the second guide position, the fabric web is fixed against displacement in the guide direction is possible.
- the first guide elements can only be brought from the first guide position into the second guide position in the fixing position.
- the second guide elements can only be brought from the first guide position into the second guide position in the fixing position, optimal conditions prevailing if this applies to both the first and second guide elements, i.e. So both can only be brought from the first guide position into the second guide position in the fixing position.
- Another particularly advantageous embodiment of the fabric laying machine according to the invention provides that the second guide elements can be brought into the continuous position after the second guide position has been reached with the first guide elements in the fixing position.
- This exemplary embodiment is used in particular when it is a matter of fabric laying machines which lay out a layer of material only by moving the laying table in one laying direction and which, after laying out the one layer of fabric, return to a starting point and from there the next layer of material lay out on the laying table.
- the first and second guide elements can preferably be moved from the first guide position into the second guide position on different trajectories.
- a particularly preferred embodiment provides that the trajectories of the first guide elements from the trajectories of the second guide elements in the second guide position are at a greater distance from one another than in the first, so that when there is a transition from the first guide position to the second guide position only in the fixing position, the fabric is stretched between the first and the second guide elements, and thus the cut quality is further improved when the fabric is cut through.
- the first guide elements could also move on different trajectories. However, this would lead to a relative shift between the two during the transition from the first guide position to the second guide position. For this reason, it is preferably provided that the first guide elements move on the same movement path.
- the second guide elements also move on the same movement path.
- a particularly simple constructive solution provides that the path of movement of the guide elements is a circular path around a pivot axis.
- the first guide elements comprise two clamping elements which are at a distance from one another in the passage position and which guide the fabric web between them and which clamp the fabric web between them in the fixing position.
- the second guide elements comprise two clamping elements that are spaced apart from one another in the continuous position and that guide the fabric between them and that clamp the fabric between them in the fixing position.
- the fabric laying machine according to the invention can be operated particularly advantageously when one of the first guide elements can be moved independently of one of the second guide elements.
- a particularly simple type of actuation of the guide elements provides that one of the first guide elements and one of the second guide elements can be moved in a force-controlled manner, the movement of the two being able to be carried out with the same phase or out of phase.
- the other of the first and the second guide elements is spring-loaded in the direction of the one of the first and second guide elements.
- Particularly advantageous controls of the guide elements can be achieved if the other two of the first and second guide elements can be moved independently of one another and preferably each of the other guide elements is independently spring-loaded.
- the freely movable guide elements can be determined in the first guide position and / or the continuous position.
- the free movement of the guide elements is positively controlled.
- a structurally particularly advantageous solution for the positive control of the guide elements provides that the movement of the guide elements from the through position into the fixing position and from the first guide position into the second guide position is effected by an eccentric seated on a control shaft.
- the eccentric can be locked in a rotationally fixed manner in different rotary positions.
- a control shaft drive motor is preferably provided for driving the control shaft, and a connection between the control shaft and the control shaft drive motor is provided in a first switching state which connects the control shaft with the control shaft drive motor for rotation thereof and in a second switching state uncouples and disengages the control shaft from the control shaft drive motor fixing clutch arranged.
- a preferred type of clutch provides that the clutch maintains the first switching state over a defined angle of rotation range of the control shaft after a control signal and automatically passes into the second switching state after passing through the same.
- FIG. 1 shows a side view of a first exemplary embodiment of a fabric laying machine according to the invention on a laying table
- FIG. 2 shows a perspective partial view of a laying unit of a first exemplary embodiment of the fabric laying machine according to the invention
- Figure 3 is a partial plan view in the direction of arrow X in Fig. 2.
- Fig. 4 is a section along line 4-4 in Fig. 2;
- FIG. 5 shows a partial section from a view of a contact surface for an endless belt knife
- Fig. 6 is a partial section along line 6-6 in Fig. 2;
- Fig. 7 is a section along line 7-7 in Fig. 2; 8 shows a section along line 8-8 in FIG. 2 with guide elements in the continuous position and in a first guide position;
- FIG. 9 shows a section similar to FIG. 8 with guide elements in the fixing position and in the second guide position;
- FIG. 10 shows a section similar to FIG. 9 with the guide elements in the fixing position and in the second guide position;
- FIG. 11 shows a section similar to FIG. 10 with first guide elements in the fixing position, second guide elements in the continuous position and all guide elements in the first guide position;
- Fig. 12 is a partial plan view in the direction of arrow XX in Fig. 2;
- FIG. 13 shows a perspective illustration of a laying unit of a second exemplary embodiment of the laying machine according to the invention similar to FIG. 2;
- FIG. 14 shows a section along line 14-14 in FIG. 13 with the guiding device standing in a continuous position in a first guiding position and with the holding device standing in the starting position or inactive position; 15 shows a section similar to FIG. 14 with the guide device standing in the second guide position and the holding element standing in the effective position;
- FIG. 16 shows a section similar to FIG. 14 in the continuous position in the first guide position of the guide device and in the effective or holding position standing device;
- FIG. 17 is a partial plan view in the direction of arrow XX in FIG. 13;
- Fig. 18 shows a functional flow in
- Fig. 18g the re-laying of a fabric layer
- a first exemplary embodiment of a fabric laying machine according to the invention designated as a whole by 10, comprises a laying carriage 12 which is guided over rollers 14 on a running rail 16 of a laying table designated as a whole by 18 and can be moved back and forth in the longitudinal direction 20 of the laying table 18 to lay out individual layers of fabric 24 in the form of a layer package 26 on a table surface 22 of the laying table 18.
- the fabric laying machine is provided with a fabric roll 28, from which a fabric web 30 by means of a fabric specification device 32, comprising a specification roller 34 controlled according to the speed of the laying carriage 12 relative to the table surface 22, via a laying unit 36 in the form of the fabric layers 24 the layer package 26 can be designed.
- the laying unit 36 comprises a laying shovel, designated as a whole by 40, which deflects the material web 42 falling free from the material specification device 34 in the direction of the table surface 22 in order to lay it out in the form of the fabric layer 24 on the table surface 22.
- a cutting device designated as a whole by 44, is provided in the laying unit 36.
- This cutting device 44 comprises an endless belt knife 46, which is held on two drums 48 and 50 and rotates with rotating drums 48 and 50.
- the drum 50 is connected to a drive motor 52, for example, while the drum 48 rotates freely.
- the drum 50 is in turn rotatably mounted on a drum carrier 56 held firmly on the frame 54, the drum carrier 56 also carrying the drive motor 52.
- the drum 48 is mounted on a drum support 58, which is shown in FIG. 3 and is displaceable with respect to the frame 54 in the direction of and away from the drum 50.
- the displaceable mounting of the drum carrier 58 relative to the frame 54 takes place by means of two guide rods 60 which extend parallel to one another and are held firmly on the frame 54 and on which the drum carrier 58 is displaceably guided by sliding bushes 62.
- the drum carrier 58 is spring-loaded away from the drum 50 by a plate spring package 64, the plate spring package 64 being placed on a head 66 of a tie rod
- the plate spring assembly 64 is supported on a bottom 72 of a bush 74 which is firmly connected to the frame 54 and receives the plate spring assembly 64.
- the head 66 is provided with an end face 76 and the sleeve 74 with an end edge 78, both of which lie in mutually parallel planes.
- the pretension of the plate spring assembly 64 can be adjusted so that, when the endless belt knife 46 is properly tensioned, the end edge 78 and the end face 76 lie in one and the same plane, which is easy for an operator to check .
- the endless belt knife 46 extends on the one hand with a cutting strand 80 and on the other hand with a return strand 82.
- the cutting strand 80 lies in a gap 84 of the laying blade 40, the cutting strand 80 extending over the entire width of the fabric track 42 extends.
- the return run 82 runs below the laying bucket 40.
- This contact element is preferably a plastic band stretched parallel to the cutting strand 80 and the return strand 82, which rests with a contact side 90 on a partial area of the inner flat side 86.
- the contact side 90 is provided with ribs 92, of which a first set runs obliquely to the longitudinal direction 94 and parallel to one another, while a second set of the ribs 92 likewise runs parallel to one another and extends obliquely to the longitudinal direction 94 so that the two sets of ribs 92 enclose diamond-shaped depressions 96 between them.
- a permanent magnet tape 98 is held on the side of the contact element 88 opposite the endless band knife 46, the field lines of which penetrate the contact element 88 and pull the endless band knife 46 against the ribs 92 of the contact side 90 with a small force.
- the plastic belt 88 is tensioned in its longitudinal direction running parallel to the endless belt knife 46.
- a clamping device designated as a whole with 100 is provided, which in turn is arranged on a side of the drum 50 facing the drum 48 and is firmly connected to the frame 54 via the drum support 56.
- the plastic belt 88 is held in this tensioning device 100 with an end piece 102, runs from this end piece 102 via a deflection piece 104, which deflects the plastic belt 88 by 180 °, parallel to the cutting strand 80 and guides the cutting strand 80 over its entire extent transverse to the web 42 until the plastic band 88 is deflected by a holder 106 to the return run 82.
- the holder 106 is arranged on the side of the drum 48 facing the drum 50 and is firmly connected to the frame 54 by way of the guide rods 60 which pass completely through the drum support 58.
- the holder 106 also extends transversely to the cutting strand 80, which corresponds to the diameter of the drum 48, so that the plastic strip 88 runs from the holder 106 in the longitudinal direction of the return strand 82 and parallel to it back to the tensioning device 100 and is deflected by two deflecting pieces 108 and 110 parallel to the end piece 102 and is also held in the tensioning device 100 with one end piece 112.
- the tensioning device 100 comprises a clamping surface 114 on a web 116, against which the two end pieces 102 and 112 can be pressed by a tensioning knob 120 which can be rotated eccentrically about a pin 118.
- the clamping toggle 120 is acted upon by a retaining screw 122.
- the web 116 and the clamping toggle 120 with the pin 118 and the retaining screw 122 are arranged on a clamping piece 124, which as a whole can be displaced relative to the deflecting pieces 104, 108 and 110 which are fixedly connected to the frame 54 by means of a clamping anchor 126.
- the tensioning anchor 126 can be screwed into a thread 130 of the tensioning piece 124 with a threaded section 128. Furthermore, the tension anchor 126 has a tension anchor head 132, which rests on a plate spring assembly 134, which on the other hand is supported by the bottom 136 of a bush 138 which receives this plate spring assembly 134.
- the tensioning anchor 126 is screwed into the thread 130 with its threaded section 128 until the plate spring assembly 134 acts on the tensioning anchor 126 with the required force and thus also the tensioning piece 124 holding the end pieces 102 and 112 from the deflection pieces 104, 108 and 110 moves away.
- both the section of the plastic band 88 running along the cutting run 80 and the section of the plastic band running along the return run 82 are tensioned in the longitudinal direction 94 thereof.
- the tension anchor head 132 is provided with an end face 140 and the bushing 138 with an end edge 142.
- the pretensioning can be adjusted by a corresponding construction of the plate spring assembly 134 so that when the End face 140 and the front edge 142 lie in one plane, the clamping piece 124 acts on the plastic band 88 with a suitable pretensioning force.
- the sleeve 138 is in turn held on a cross member 144 which is connected via longitudinal members 146 and 148 to a carrier 150 holding the deflection pieces 104, 108 and 110, this carrier in turn is held rigidly on the frame 54 via the drum support 56.
- a band knife grinding device designated as a whole by 162
- This Band knife grinding device 162 has a grinding wheel holder 164 which is pivotably mounted on the drum carrier 58 and a grinding wheel 166 which is provided with a hollow cylindrical grinding region 168 which can be placed on the endless belt knife 46 with an annular surface 170 which lies in a grinding plane 172, that it rests on a flat side 174 opposite the inner flat side 86 with a grinding plane 172 inclined to this flat side 174 and forms a grinding point which represents a ring segment of the ring surface 170.
- the grinding wheel 166 held freely on the grinding wheel holder 164 is driven while the endless belt knife 46 is running and grinds the endless belt knife 46 obliquely in the region of its cutting edge 160 in relation to the outer flat side 174 and also to the inner flat side 86 .
- a counter bearing 178 is provided downstream of the grinding point in the direction of rotation of the endless belt knife 46, on which the inner flat side 84 abuts in the region of the cutting edge 160.
- the endless belt knife 46 is supported against deflection away from the grinding wheel 166 in a direction parallel to the flat sides 86 and 174 by a hard metal bearing 180, on which the endless belt knife 46 lies with a lower edge 182 opposite the cutting edge 160 during grinding.
- the grinding wheel holder 164 is provided with a hand lever 184, with which the grinding wheel holder 164 and the grinding wheel 166 can be pivoted and pivoted back in the direction of the endless belt knife 46.
- the laying shovel designated as a whole by 40, is divided into two, namely into a rear part 192 lying in a feed direction 190 in front of the gap 84 and a rear part 192 in the feed direction 190 the front part 194 following the gap 84.
- Both parts 192 and 194 of the laying shovel 40 are now movable relative to the cutting section 80, which is arranged stationary with respect to the frame 54 with the endless belt knife 46 running.
- the rear part 192 can be pivoted about a pivot axis 196 with respect to the frame 54 and the front part 194 can be pivoted about a pivot axis 198.
- pivot axis 198 for the pivotable mounting of the front part 194 In contrast to this, from the pivot axis 198 for the pivotable mounting of the front part 194, support arms 202 extend, which are penetrated by the pivot axis 198 for pivotable mounting thereof, extend from the pivot axis 198 in the direction of the front part 194 and are firmly connected to the latter . As shown in FIG. 8, the two pivot axes 196 and 198 are preferably arranged essentially vertically one above the other, the pivot axis 198 being below the pivot axis 196.
- both the rear part 192 and the front part 194 have the possibility of changing to a second guide position, shown in FIG. 9 or 10, in which the fabric web 42 is already through the cutting edge 160 of the endless belt knife 46 is pushed through and is cut off with a front cutting edge 214 and a rear cutting edge 216 in the feed direction 190 upstream or downstream of the cutting strand 80.
- the cutting of the fabric web 42 took place during the transition from the first guide position, shown in FIG. 8, to the second guide position, shown in FIG. 9.
- a rear clamping jaw 218 and a front clamping jaw 220 are also provided, the rear clamping jaw 218 with the rear part 192 and the front clamping jaw 220 with the front part 194 of the laying shovel 40 interact.
- the rear clamping jaw 218 comprises a cross member 222 which extends across the laying shovel 40 and thus also the width of the fabric web 42 and which is arranged by arms 224 arranged on the side thereof on the pivot axis 196 passing through it in the same way as the rear part 192 is mounted so that both the clamping jaws 218 and the rear part 192 can be pivoted about the same pivot axis 196.
- a plurality of clamping fingers 226 are provided on the crossmember 222 and carry an elastic clamping piece 228 at their lower end facing the laying shovel 40.
- the rear clamping jaw 218 and the rear part 192 together form first guide elements, between which the fabric web 42 extends. If the clamping pieces 228 are arranged at a distance from a fabric guide surface 230 of the rear part, then the first guide elements 218 are in their passage position and the fabric web 42 can be passed freely between them in the feed direction 190.
- the clamping jaw 218 can also be moved so far in the direction of the rear part 192 that the clamping piece 228 presses on the fabric web 42 and this against the rear part 192, which is quite possible if the rear part 192 is still in the is the first guide position, that is, the fabric 42 at a distance from the Cutting edge 160 is guided and held in a fixing position. In this fixing position, the fabric web 42 can no longer be moved in the feed direction 190, but is fixed against movement in this direction.
- the first guide elements 192 and 218 can be moved from the first guide position into the second guide position, this being done by actuating the clamping jaw 218, which will be described later in detail and which involves clamping the fabric web 42 the rear part 192 presses from the first guide position into the second guide position against the force of the spring 210.
- the front jaw 220 is formed, i.e. this also comprises a cross member 232 which is mounted on the pivot axis 198 via arms 234, the arms 234 extending between the arms 224 and the holding arms 202 and being penetrated by the pivot axis 198. Furthermore, the cross members 232 are provided with clamping fingers 236, which carry clamping pieces 238 at their end facing the front part 194 of the laying shovel 40.
- the front part 194 and the front clamping jaws 220 form second guide elements through which the fabric web 42 runs.
- the clamping piece 238 In a continuous position, the clamping piece 238 is at a distance from a fabric guide surface 240 of the front part 194, so that the fabric web 42 can be passed freely in the feed direction 190.
- the clamping piece 238 presses the fabric web 42 against the fabric guide surface 240 and clamps it between them, so that the fabric web 42 is fixed against a displacement movement in the feed direction 190.
- a control shaft 242 which carries an eccentric disk 244.
- a first link 246 is rotatably mounted, which extends to the arm 224 and engages on it, rotatably supported by a bolt 248.
- a second link 250 is rotatably mounted, which extends to the arm 234 and also rotatably engages on the latter by means of a bolt 252.
- first link 246 and the second link 250 lie between the arms 224 and 234.
- the control shaft 242 is driven by a control shaft drive motor 256, which drives a clutch 258, which in turn is responsible for driving the control shaft 242.
- this clutch 258, which preferably as Coil spring clutch of the SCAM series from Baumann & Cie. AG, Federnfabrik, CH-8630 Rüti-Zürich, there is the possibility of continuing to turn the control shaft 242, starting from a non-rotatably fixed position, and to fix it non-rotatably again after passing through a predeterminable angle of rotation, while the control shaft drive motor 256 can continue.
- only one control pulse is required to trigger the clutch 258 and thus to trigger a further rotation of the control shaft 242 by the predeterminable angle of rotation, while the control shaft drive motor 256 can always continue to run.
- the clutch 258 is designed such that the control shaft 242 is rotated further by an angle of rotation of 90 °.
- the guide shaft which extends below the rear part 192, is provided with a cam 260 which works against a counter-rotor 262 which is fixedly connected to the rear part 192, and which is preferably as Wedge arranged on an underside of the rear part 192 is formed.
- the cam 260 has a shape such that it over the counter-rotor 262 the rear part 192 of the laying shovel 40 in the position in which the first guide elements 192 and 218 and the second guide elements 194 and 220 are in their continuous position, in the first guide position.
- the arm 234 is firmly connected on its underside to a support 264 which extends under the holding arm 202, which in turn at in the first guide position of the front part 194 and in the continuous position of the jaws 220 runs parallel to the arm 234.
- the support 264 now prevents the holding arm 202 from moving in this position of the arm 234, for example due to an additional load, against the force of the spring 212 from the first guide position to the second guide position. This ensures that, even when the endless belt knife 46 is running, the web 42 is guided at a distance from the cutting edge 160 thereof.
- the fabric web 42 is applied to the fabric web 42.
- This is the laying unit closed at the bottom, ie towards the laying table 18, with a housing base 266, the housing base 266 extending from a rear wall 268 of the laying unit 36 to below the endless belt knife 46.
- the rear part 192 of the laying shovel is preferably provided with an air slot 270 at a distance from an impact point of the fabric web 42 falling from the material specification device 32, from which an air flow 272 directed into a gap 274 formed between the fabric web 42 and the fabric guide surface 230 exit.
- the rear part 192 of the laying shovel 40 is provided in the area of the gap 84 with bores 276, from which an air flow directed against the fabric web 42 and pushing the fabric web 42 out of the gap 84 emerges.
- the rear part 192 of the laying blade 40 is preferably provided with a bend 278 which extends approximately to the side of the gap 84 and to which a flexible bend is made Sealing flap 280 connects sealingly, which in turn is sealingly connected to the housing base 266.
- a flexible tab 282 is provided after the rear wall 268, which abuts the rear part 192 of the laying shovel 40 above the air slot 270.
- the fabric laying machine 10 travels from a right end 290 of the layer package to a left end 292.
- the control shaft 242 stands such that a center point 294 of the eccentric discs 244 is in the position A shown in Fig. 8.
- the front clamping jaw 220 is positively controlled by the eccentric disk 244 in its continuous position and also holds the front part 194 of the laying shovel 40 in the first guide position via the support 264.
- the endless belt knife 46 can be operated in different ways, that is, it is possible according to the invention to let the endless belt knife 46 rotate during the entire laying process, or the drive motor is conceivable with a somewhat more complex control of the fabric laying machine 10 52 to start in good time before a necessary cutting operation, for example at a suitable distance from the left end 292 of the layer package 26.
- the laying process is continued until the fabric laying machine 10 is moved so far to the left relative to the laying table 18 that when the fabric web 42 is cut off, the rear cut edge 216 of the fabric layer 24 coincides with the left end 292 of the layer package 26. In this position the fabric laying machine 10 is stopped and the cutting process takes place.
- the feed of the fabric web 42 is interrupted, so that the now stationary fabric web 42 is fixed in the feed position 190 by the first and the second clamping elements.
- the endless belt knife 46 must be put into operation in good time beforehand, so that it already rotates at the desired speed when the fabric laying machine 10 stops in the position mentioned above.
- the clutch 258 is actuated by a switching pulse, so that the control shaft drive motor 256, which is also already running, for example switched on simultaneously with the drive motor 52, actuates the clutch Control shaft 242 rotates through an angle of 90 °, but then stops after passing through the angular range of 90 °.
- the center 294 of the eccentric disc is in position B, as shown in FIG. 9.
- the fixing of the rear part 192 and the front part 194 of the laying shovel 40 in the first guide position is canceled, so that after reaching the fixing position for the first time and turning the control shaft 242 to In position B, the first guide elements 192 and 218 and the second guide elements 194 and 220 in the fixing position change from the first guide position to the second guide position and thereby press the fabric web 42 through the cutting edge 160 of the endless belt knife 46.
- the cutting edge 160 is preferably aligned parallel to the fabric web 42, so that the fabric web 42 is cut across the entire width by the endless band knife 46 at the same time.
- the pivot axes 196 and 198 are arranged such that the distance between the first guide elements 192 and 218 from the second guide elements 194 and 220 changes during the transition from the first guide position, shown in FIG. 8, to the second guide position, shown in FIG. 9, enlarged and thus the fabric web 42 is additionally stretched as it is pushed through the cutting edge 160. This simplifies the cutting and improves the quality of the cutting edges 214 and 216 that occur.
- the front part 194 of the laying shovel 40 is in the first guide position, but the second guide elements 194 and 220 are not in their fixing position, but in the continuous position and release the rest of the laid-out fabric layer 24 up to the rear cutting edge 216, so that the fabric laying machine 10 can continue and the fabric layer 24 can be laid out completely up to the left end 292. Due to the above-mentioned procedure, the rear cutting edge 216 then lies at the left end 292 of the layer package 26.
- the entire fabric laying machine then moves back again beyond the right end of the layer package 26, the first guide elements still remaining in their fixing position and thus holding the fabric web 42 fixed with the front cutting edge 214.
- the first guide elements 192, 218 form a holding device in their effective position, so that the guide device, formed from the first and second guide elements, simultaneously represents a holding device.
- the first guide position of the rear part 192 and the front part 194 of the laying shovel 40 should be fixed during the entire process of the fabric laying machine 10.
- the cam 260 is preferably designed such that it already bears against the counter-rotor 262 in position D of the control shaft 242, while the front one Part 194 of the laying shovel 40 is held fixed in the first guide position by the support 264 on the front clamping jaw 220.
- control shaft 242 In position D, the control shaft 242 is to be fixed in a rotationally fixed manner while passing over the left end 292 of the layer package 26 and moving back to the right end 290, so that the clutch 258 must be designed such that it reaches the connection when position D is reached to the control shaft drive motor 256 interrupts and the control shaft 242 is rotatably fixed.
- the control shaft After the material laying machine 10 is positioned in the area of the right end 290 of the layer package 26, is turned back into the position A, so that the first guide elements 192 and 218 are in the continuous position and at Approaching the material laying machine 10, the front cutting edge 214 is pushed further in the feed direction 190 and is applied to the right end 290 of the layer package 26.
- FIGS. 13 to 18 In a second embodiment of the fabric laying machine according to the invention, shown in FIGS. 13 to 18, those parts which are identical to those of the first embodiment are provided with the same reference symbols. For this reason, with regard to the description thereof, reference is made to the explanations for the first exemplary embodiment.
- the rear clamping jaws 218 and the front clamping jaws 220 are each formed by clamping fingers 300 and 302, which in turn sit on a common cross member 304, which is supported in the same way as the cross member 232 via the arms 234 on the pivot axis 198 is.
- the two clamping jaws 218 and 220 can thus only be moved together in the direction of the laying shovel 40, that is to say on its rear part 192 and on its front part 194.
- the clamping fingers 300 and 302 are also provided with clamping pieces 306 and 308, exactly as in the first exemplary embodiment, and are otherwise arranged at a distance from one another in the same way as in the first exemplary embodiment.
- the clamping jaws 218 and 220 carry continuous clamping strips with elastic clamping pieces that extend over the entire width of the fabric web 42. With this an even more even cut of the fabric can be achieved.
- a holding device 310 is provided in the second exemplary embodiment, which comprises a holding jaw 312, which in turn interacts with the rear part 192 of the laying shovel 40 as a holding device 310.
- the holding jaw 312 comprises a plurality of holding fingers 314 which are arranged at a distance from one another and which are in turn held on a cross member 316 which extends in the same way as the cross member 222 over the entire width of the fabric web and in the same way how the cross member 222 is rotatably mounted on two arms 224 about the pivot axis 196. If no catcher is used, a continuous holding bar can be used.
- the holding fingers 314 of the holding jaw 312 are preferably also provided with holding pieces 318 in order to keep the fabric web immovable by pushing these holding pieces 318 against the rear part 192 of the laying shovel 40.
- a control shaft 242 is provided in the same way as in the first exemplary embodiment, which carries an eccentric disc 244, on which eccentric disc 244 the handlebar 250 is rotatably mounted, which extends to the arm 234 and by means of a Bolt 252 engages rotatably mounted on this.
- the arm 234 is thus actuated in the manner already described in connection with the first exemplary embodiment by rotating the control shaft 242.
- the arms 224 are additionally provided with an extension 326, which extends, for example, perpendicular to the arms 224 in the direction of the laying table 18.
- the extension 326 can be fixed in a catch 330 by means of a catch 332, in which case the end 328 engages behind the catch 332.
- the detent 330 is preferably mounted on the laying unit 36 such that it can be rotated about an axis 334 and is urged into its position that defines the extension 326 by locking by means of a spring 336.
- a pull magnet 338 is provided for moving the detent 330 opposite to this direction, with which the detent 330 can be moved against the force of the spring 336, the pull magnet 338 acting on the detent 330 via a pull rod 340.
- the arms 224 are approximately parallel to the arms 234 and in a position comparable to the position of the arms 224 according to FIG 8 in the first exemplary embodiment.
- control shaft 242 is, for example, such that the center 294 of the eccentric disk 244 is in the E position.
- the arms 234 are moved in the direction of the laying shovel 240 via the handlebar 250, so that the clamping jaws 218 and 220 also move towards the rear part 192 or the front part 194 of the laying shovel 40 and thus place on both sides of the cutting strand 80 on the laying shovel 40.
- the clamping jaws 218 and 220 move from the passage position of the first guide position into the fixing position of the first guide position, whereby in the latter, when the fabric web 42 is placed in place, they fix it immovably in the feed direction 190.
- the center point 294 of the eccentric disc 244 is in the position F.
- the rear part 192 and the front part 194 of the laying shovel are pressed down evenly, so that their material-bearing surfaces 230 or 240 are preferably in a common plane.
- the rear part 192 of the laying shovel 40 and the front part 194 are, just as in the first exemplary embodiment, fixed in the first guide position against movement into the second guide position.
- the holding jaws 312 do not yet rest on the fabric web 42, since this is held in the second guide position by the guide elements 218, 192 or 220, 194 and thus in the direction of the laying table 18 is moved down to cut it by means of the cutting strand 80.
- the holding jaw 312 When the clamping jaws 218 or 220 return from the second guide position to the continuous position of the first guide position, the holding jaw 312 does not follow, but remains in its position shown in FIG. 15. The rear part 192 swivels from the second guide position into the first guide position, which is shown in FIG. 16. The holding jaw 312 is now arranged in its holding position or effective position such that when the rear part 192 of the laying shovel 40 is in the first guide position, the holding jaws 312 rests on the fabric web 42 and presses it against the rear part 192 against one another Moving fixed in the feed direction 190. This fixation of the fabric web 42 by means of the holding jaw 312 means that it is no longer possible to move the fabric web 42, although the clamping jaws 218 and 220 have already returned to their continuous position of the first guide position.
- the elongated hole 324 is dimensioned such that the arms 224 can remain in the holding position, although the arms 234 in turn are in their starting position , that is, the continuous position of the first management position, have returned.
- both the clamping jaws 218 and 220 are in their starting position, that is to say the continuous position of the first guide position, and the holding jaws 312 are also in their inactive position, so that the fabric web 42 slides freely in the feed direction 190 over the fabric guiding surfaces 230 and 240 of the laying shovel 40.
- the laying carriage 12 stops and the fabric web 42 is severed, the clamping jaws 218 and 220 together with the rear part 192 and the front part 194 from the first guide position in FIG the second leadership position to be moved and at the transition from the first guide position to the second guide position, the fabric web 42 is cut by means of the cutting strand 80.
- the holding jaw 312 is moved into its holding position.
- the clamping jaws 218 and 220 After severing the fabric web, as shown in FIG. 18c, the clamping jaws 218 and 220 as well as the rear part 192 and the front part 194 return to their first guide position, in which the holding jaws 312 in its holding position or active position now coexist the rear part 192 holds the fabric web 42 against displacement in the feed direction 190.
- a catcher 346 is arranged which has catcher arms 342 which can be raised by the laying carriage 12. These catcher arms 342 are raised to such an extent that they engage between the clamping fingers 300 and 302 and the holding fingers 314 and, with support pieces 344 arranged at front ends of the catcher arms 342, can rest on the fabric web 42 in the region of the rear part 192 of the laying shovel in order to To capture fabric panel 42.
- the holding jaw 312 remains in the holding position and fixes the fabric web 42 on the rear part 192 until the catcher 340 rests with its support pieces 344 on the fabric web 42.
- the catcher with the support pieces 344 pulls the fabric web over the laying shovel 40 and places it exactly on the right layer packet end 290, so that a new layer of fabric 24 is laid out on the layer package 26 by moving the laying carriage 12 in the laying direction.
- the front part 194 of the laying shovel 40 is formed by a bar which is narrow in the feed direction 190, so that the rest 42R falls on the layer package 26 after the cutting and there is no need to continue with an overflow or only a very slight overflow is required.
Landscapes
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4117544 | 1991-05-29 | ||
DEP4117544.1 | 1991-05-29 | ||
DEP4121125.1 | 1991-06-26 | ||
DE19914121125 DE4121125A1 (de) | 1991-05-29 | 1991-06-26 | Stofflegemaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1992021602A2 true WO1992021602A2 (de) | 1992-12-10 |
WO1992021602A3 WO1992021602A3 (de) | 1993-04-01 |
Family
ID=25904044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1992/001171 WO1992021602A2 (de) | 1991-05-29 | 1992-05-25 | Stofflegemaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0541749A1 (de) |
DE (1) | DE4121125A1 (de) |
WO (1) | WO1992021602A2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102992086A (zh) * | 2012-12-27 | 2013-03-27 | 蔡正根 | 一种拉叠整布机机械装置 |
CN105926265B (zh) * | 2016-06-16 | 2023-09-29 | 孟周强 | 一种布匹快速横向剪切系统 |
CN108193475A (zh) * | 2017-12-29 | 2018-06-22 | 湖南大学 | 一种纤维织物的送料切割系统 |
CN108861708A (zh) * | 2018-05-30 | 2018-11-23 | 温州华耀数控科技有限公司 | 柔性材料切割装置 |
CN113334439B (zh) * | 2021-05-25 | 2023-09-01 | 利辛县富亚纱网有限公司 | 一种纱网加工装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3318179A (en) * | 1965-03-11 | 1967-05-09 | Nemo Ind Inc | Feeding and cutting machine for sheet material |
DE2044755A1 (de) * | 1969-09-12 | 1971-03-18 | Cutters Machine Co , Inc, Nashvil le.Tenn (VStA) | Einrichtung zum Schneiden von bahn formigem Gut, insbesondere zum Schneiden von Stoffbahnen |
US3889564A (en) * | 1974-01-23 | 1975-06-17 | Comstock & Wescott | Knife edge endless loop book cutter |
DE2409123A1 (de) * | 1974-02-26 | 1975-09-04 | Artos Meier Windhorst Kg | Vorrichtung zum schneiden von laufenden warenbahnen |
DE3218483A1 (de) * | 1982-05-15 | 1983-11-17 | Krauss U. Reichert Gmbh + Co Kg Spezialmaschinenfabrik, 7012 Fellbach | Legemaschine |
EP0391865A2 (de) * | 1989-04-05 | 1990-10-10 | FABIO PERINI S.p.A. | Vorrichtung zum Abtrennen von Rollenmaterialabschnitten von einem Rollenmaterial |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT206736Z2 (it) * | 1986-05-07 | 1987-10-01 | Camoga Spa | Dispositivo per avvicinar ed allontanare le molle di affilature dalla lama di taglio in unamacchina spaccatrice di pelli. |
DE3815129A1 (de) * | 1988-05-04 | 1989-11-16 | Fortuna Werke Maschf Ag | Fuehrungsvorrichtung fuer ein bandmesser |
-
1991
- 1991-06-26 DE DE19914121125 patent/DE4121125A1/de not_active Ceased
-
1992
- 1992-05-25 WO PCT/EP1992/001171 patent/WO1992021602A2/de not_active Application Discontinuation
- 1992-05-25 EP EP19920910741 patent/EP0541749A1/de not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3318179A (en) * | 1965-03-11 | 1967-05-09 | Nemo Ind Inc | Feeding and cutting machine for sheet material |
DE2044755A1 (de) * | 1969-09-12 | 1971-03-18 | Cutters Machine Co , Inc, Nashvil le.Tenn (VStA) | Einrichtung zum Schneiden von bahn formigem Gut, insbesondere zum Schneiden von Stoffbahnen |
US3889564A (en) * | 1974-01-23 | 1975-06-17 | Comstock & Wescott | Knife edge endless loop book cutter |
DE2409123A1 (de) * | 1974-02-26 | 1975-09-04 | Artos Meier Windhorst Kg | Vorrichtung zum schneiden von laufenden warenbahnen |
DE3218483A1 (de) * | 1982-05-15 | 1983-11-17 | Krauss U. Reichert Gmbh + Co Kg Spezialmaschinenfabrik, 7012 Fellbach | Legemaschine |
EP0391865A2 (de) * | 1989-04-05 | 1990-10-10 | FABIO PERINI S.p.A. | Vorrichtung zum Abtrennen von Rollenmaterialabschnitten von einem Rollenmaterial |
Also Published As
Publication number | Publication date |
---|---|
WO1992021602A3 (de) | 1993-04-01 |
EP0541749A1 (de) | 1993-05-19 |
DE4121125A1 (de) | 1992-12-03 |
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