EP3850133A1 - Webmaschine mit einer schussfadenfarbwahleinrichtung - Google Patents
Webmaschine mit einer schussfadenfarbwahleinrichtungInfo
- Publication number
- EP3850133A1 EP3850133A1 EP19729540.5A EP19729540A EP3850133A1 EP 3850133 A1 EP3850133 A1 EP 3850133A1 EP 19729540 A EP19729540 A EP 19729540A EP 3850133 A1 EP3850133 A1 EP 3850133A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weft
- thread
- thread guide
- gripper
- partial color
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000009941 weaving Methods 0.000 title claims abstract description 26
- 238000003780 insertion Methods 0.000 claims abstract description 34
- 230000037431 insertion Effects 0.000 claims abstract description 34
- 238000012546 transfer Methods 0.000 claims abstract description 17
- 210000004556 brain Anatomy 0.000 claims description 3
- 239000004744 fabric Substances 0.000 description 14
- 239000003086 colorant Substances 0.000 description 8
- 238000007792 addition Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 210000003128 head Anatomy 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/34—Handling the weft between bulk storage and weft-inserting means
- D03D47/38—Weft pattern mechanisms
Definitions
- the invention relates to a weaving machine with a weft color selection device with the features according to the preamble of claim 1.
- weft color selection devices for weaving machines are required if weft threads of different colors and / or different material properties are used in the production of a multicolored fabric. However, they are also used for single-colored fabrics with the same weft materials, for example to reduce the load on the bobbins when the weft is drawn off. Such weft color selection devices are known.
- the weft thread additions used in rapier weaving machines are characterized by the fact that in some cases up to 16 colors are available, but this is a handicap for the weaver in terms of operation, because in particular the view of the thread eyelets is not only difficult, but often completely is covered or it is difficult to pull in a weft thread in practice, which can lead to misfeeds.
- weft thread additions also have the disadvantage that the weft threads are handed over to a gripper, for example, until they are handed over and handed over
- Thread guide eyelets must be strongly deflected in part, which definitely
- CN 101 314 881 B describes a weft color selection device in which weft threads of different colors or types are each guided through eyelets arranged side by side in a color selection disk.
- the color selection disc with the individual eyelets enables a weft thread to be inserted in each case to be moved into a position when it is moved, with which a dispensing needle can transfer the weft thread to a gripper. Since the gripper runs below the color selection device, the respective weft thread must be pressed or guided down to the gripper by means of the dispensing needle immediately after it emerges from the color selection disc so that the gripper can take over the thread. A hard deflection of the weft thread with possible damage to it is inevitable.
- a color selection disk is described as a weft color selection device, which has guide eyes on its outer circumference through which
- DE 38 08 777 A1 describes a device for the optional feeding of a weft thread from a number of several weft threads to a gripper projectile.
- a feed clamp is provided for holding this weft thread so that the respective weft threads can be fed to the gripper.
- the clamping device is designed as a rotatably mounted ring with a ring clamp which, on its circular movement, tensions the weft thread released by the ratchet clamp across the imaginary extension of the hook path.
- the number of feeder clamps with corresponding devices for carrying out the respective clamping action which corresponds to the number of weft threads to be provided, is mechanically quite complex and does not, for example, solve the problem of accessibility of the weft threads when changing weft threads, nor does the damage to the weft threads as a result of the clamping action by the feeder clamps.
- JP 2001/131847 A describes a weft color selection device in which a weft ring is provided with a plurality of weft guide eyelets, in which a weft is guided.
- a selected weft is always brought to a predetermined position, from which it can be gripped by means of a pivotable lever with a hook at its tip and transferred to a shed for entry.
- Weft color selection device is that the rotatable weft ring is rotated relative to a fixed weft ring. With each addition or selection of a specific weft thread, all weft threads arranged between the fixed and the rotatable weft thread ring are therefore twisted, as a result of which they are sometimes hard
- EP 1 500 731 B1 describes a weft feed device for weaving machines with a single feed rod.
- the weft thread guide has a perforated plate and a feed fork, the movement of which is controlled by two drives which are coupled to one another via a coupling gear.
- One drive is provided for the linear movement of the feed fork and the other drive for a rotary or swivel movement.
- the color selection device does not have a color selection disk and has only provided closed loops in all weft guide eyelets, so that the weft threads are sometimes deflected several times and are also hard until they are reached for gripping, for example by means of a gripper.
- GB 1 002 093 A describes a weft thread changer for weaving machines with grippers.
- a plate-shaped lever with a closed eyelet is moved towards the transfer point to the gripper.
- each weft thread of a different color has its own plate-shaped lever.
- the object of the present invention is a
- weft color selection device for a weaving machine, which avoids the disadvantages of known devices such as, for example, the twisting of the weft threads between the stationary thread guide and the color selection disk and damage to the
- Another object of the present invention is to provide a
- weft color selection device for a weaving machine that does not obscure the weaver's view of the thread eyelets when it is given in such a way that a weaver cannot comfortably pull in the weft thread, and that can hold as large a number of weft threads as possible for entry without the need to line up significantly must be reduced, that is, without the line density having to be increased significantly.
- the weaving machine has a weft color selection device, by means of which individual weft threads of a number of weft threads provided can be fed to a gripper in a selected sequence.
- the weft color selector has one Thread guide, by means of which the weft threads, which are fed from a prewinder, can be fed via the thread guide to the weft thread color selection device.
- Weft color selection device has thread guide eyelets which can be moved with a first drive for the color disk in such a way that a respective selected weft thread can be brought into its respective sufficient position.
- the thread guide eyelets each take at least one weft thread for its selection and preparation for the gripper
- the weft color selection device now has such a number of thread guide eyelets that the number of weft threads of different colors or different materials that are required for the fabric to be woven can be kept available, so that one of the plurality of weft threads provided is selected for a weft insertion, which is required for the weaving pattern of the fabric.
- the sufficient position is to be understood as the position at which a thread guide eyelet, namely the thread guide eyelet from which the weft thread guided therein is to be fed to the hook, is positioned such that the thread guide eye for the selected weft thread is assigned to the hook with respect to its radial direction.
- a delivery needle which is driven by a second drive, now feeds the weft selected for the weft insertion from the delivery position to the gripper, in which this weft is clamped, so that it is inserted into the shed by the movement of the gripper through the shed.
- this arrangement of colored disk and delivery needle ensures that each weft thread is fed to the gripper from the same position and under essentially identical conditions. For each weft thread there are identical conditions when it is transferred to the hook.
- the positive aspect of such an arrangement is that setting and receiving position of the presented weft thread are made significantly easier by the gripper.
- a number of delivery needles corresponding to the number of weft threads increases the distance between the first and last delivery needles, which makes the system more error-prone.
- the thread guide eyes of the weft color selection device are designed in such a way that they are open to their outside, at least in their sufficient position.
- the outside is to be understood as the side of the thread guide eyelet which is the gripper or the clamping element, by means of which the weft thread is inserted into the shed, faces.
- Weft color selector device has an ink disk which has a defined number of yarn guide eyes which are arranged in its outer circumferential area, each yarn guide eyelet each having an opening running radially to the outside of the ink disk.
- the ink disk is preferably driven to rotate by means of the first drive, which ensures that the selected weft thread is rotated with its thread guide eyelet or with the opening of the thread guide eyelet in such a way that the opening points to the gripper and thus assumes the sufficient position for the gripper Has.
- This is to be understood here to mean that the thread is oriented with respect to its opening of the thread guide eyelet on the hook, and consequently in the sufficient position in the next step from the
- Delivery needle can be gripped and fed directly to the gripper.
- the position of delivery is therefore not the position which the weft thread has immediately assumed when it is handed over to the gripper by the delivery needle.
- the selected weft thread is guided out of the open thread guide eyelet by the movement of the delivery needle in the direction of the hook and can thus be fed to the hook. This is made possible by the fact that the opening of the thread guide eyelet points to the gripper and in this position the delivery needle preferably in the direction of the opening of the
- Thread guide eyelet grips the weft thread towards the outside of the color disk and feeds it to the hook.
- the movement of the dispensing needle does not necessarily have to be in the radial direction of a line which is defined by the pivot point of the colored disk and the opening of the
- Thread guide eyelet from which the weft thread is to be fed runs. Rather, it is sufficient if the hand-over needle with respect to the color disk via a
- Color disc with at least one directional component running in the radial direction transfers the weft thread to the hook.
- a deviation from an exactly radial direction of the movement of the delivery needle can be due to the construction or the function.
- the open thread guide eyes which are not in their
- Weft thread can be closed or secured in the respective thread guide eyelet or
- Closing latch has a slot which is always arranged at the position sufficient and after the color disk has been aligned with the opening of the
- Thread guide eyelet for the weft thread to be introduced points to the slot and thus to the hook.
- the weft thread to be introduced can be fed to the hook from the open thread guide eyelet through the slot in the bar without deflection.
- the ink disc can be rotated with respect to the bartack with the first drive in such a way that the slot only ever releases the thread guide eyelet from which the weft thread is transferred to the hook.
- the bar can be arranged in the feed direction of the weft thread before, at the height or after the color disc.
- the bolt is preferably designed as a disc or disc segment analogous to the colored disc in the sense of a double disc arrangement and has a slot running radially to its outer circumference, which is arranged in the sufficient position, and one
- Breakthrough represents which for each thread guide eyelet in the color disc
- the bar is preferably arranged close to the color disk, preferably even touching it.
- the bar can preferably be designed as a ring-shaped bar which, as it were, surrounds the colored disk in a spatially fixed manner, preferably encloses it, and thus covers the thread guide eyes of the colored disk, With Except for the thread guide eyelet, which has been rotated into the position where the bar has a slot for guiding the weft thread out without deflection and feeding it to the hook.
- the thread guide eyelet which has been rotated into the position where the bar has a slot for guiding the weft thread out without deflection and feeding it to the hook.
- one is usually on
- This bar which is in the form of a segment of a ring, serves to close off the open thread guide eyes, with the exception of the thread guide eye of the weft thread, which is in the position of delivery for direct transfer to the hook by means of the delivery needle. Closing the other thread guide eyelets open to the outside ensures that the weft threads do not fall out of their respective open thread guide eyelets or are lost.
- the thread tensioned by the entry in the shed is fed back through the movement of the handing needle through the slot into the thread guide eyelet of the color disk and thus entered without deflection.
- the color disk can be rotated to the newly sufficient delivery position, or if the color to be entered remains the same, the delivery position of the color disk remains.
- the colored disk is preferably formed in two parts.
- a first partial color disc and a second partial color disc are preferably provided, which are driven independently of one another by means of controllable drives and, according to the invention, likewise each have thread guide eyes that are open to the outside. Due to the fact that the ink disc actually consists of two ink discs, namely the first partial ink disc and the second partial ink disc, and each partial ink disc is driven independently of the other by means of controllable drives, at least three preferably independent drives are required for two partial ink discs and the delivery needle, one each Drive for the respective color disc and one drive for one
- each partial color disk then having a separate drive. It is also possible that more than one delivery needle is provided, so that a respective drive is also provided for each delivery needle.
- the second partial color disc can be arranged in the plane of the weft insertion in a plane in front of or behind the first partial color disc and essentially parallel to it.
- the second Partial color disc is, so to speak, formed in a layered arrangement with the first partial color disc. Layered arrangement means only the spatial arrangement.
- a connection to the first partial color disc is provided only in view of the fact that both partial color discs have a separate drive, but an independent one
- Pivoting the respective partial color disc relative to the other partial color disc enables.
- the swiveling movement of the two partial color disks to one another must be coordinated in such a way that the positions of the thread guide eyelets that are open to the outside meet
- Weft threads which are guided in the open thread guide eyelets of the second partial color disc, can be handed to a gripper.
- the radial extent of the second partial color disk from its pivot point to the outside is preferably less than this radial distance in the first partial color disk.
- An essentially parallel arrangement of the partial color disks with respect to one another should also include minor deviations from the parallelism, which, depending on the function or arrangement, can be up to 15 to 20 °.
- the first partial color disk preferably has a longitudinal slot which is formed essentially parallel to the curvature of its outer circumference. This longitudinal slot extends with essentially the same curvature, so to speak, within the first partial color disk without a direct connection to the thread guide eyes which are open to the outside.
- a passage or slot is provided from the longitudinal slot in the first partial color disk, which realizes a connection from the inside of the longitudinal slot to the outside or to the outer circumference of the first partial color disk.
- the weft threads which are fed from the second partial color disc to the gripper, are led out via the first partial color disc, because the leading out takes place via the passage connecting the longitudinal slot to the outside of the first partial color disc.
- the passage is preferably in the middle of the first
- Partial color disc arranged. However, it is also possible for certain applications to provide this passage off-center. Arranging the passage in the middle is too understand that the first partial color disc is designed as a disc segment and its bisector coincides with the arrangement of the passage.
- Partial color disc can be reliably brought out and fed to the gripper with the hand-over needle, the first and second partial color discs are pivotably driven relative to one another in such a way that for feeding a weft thread out of the respective one
- Thread guide eyelet in the second partial color disk this thread guide eyelet is brought into register with the passage, so that the needle from the second one is used for the administration
- the first and the second partial color disc are now pivoted in such a way that the passage in the first partial color disc always coincides with the weft thread, and thus the thread guide eyelet of the second partial color disc, from which a corresponding weft thread is to be fed to the hook and introduced into the shed.
- a double-shot delivery needle which has a double receiving eyelet, i.e. a double drop, in order to be able to feed two weft threads simultaneously to a rapier head with a single delivery needle, can take a first weft thread from a thread guide eyelet of the first partial color disk and a corresponding second weft thread from a thread guide eyelet of the second partial color disk by means of the double lowering and feed it to the gripper.
- no weft thread may be located adjacent to the guide eyelet guiding the second weft thread in the second partial color disk, because otherwise the dispensing needle would take another weft thread.
- the hand-over needle could not lead this additional weft thread out of the thread guide eyelet and feed it to the hook, since this thread guide eyelet is not at the passage of the
- Longitudinal slot is located in the first partial color disc.
- the first and the second partial color disks are not arranged one behind the other in the weft insertion direction, but essentially in one plane, this plane being essentially perpendicular to the
- the first and the second partial color disks each have their own drive, so that both
- Partial color disks can also be moved essentially independently of one another. io
- the colored disk is designed as a disk segment and is preferably divided in the middle of the angle bisecting the segment.
- a partial color disc can be moved from the operating position into a parking position, so that for a certain time at least the weft threads can only be fed to the gripper from the other partial color disc in the operating position.
- a mode of operation is useful, for example, if the number of weft threads to be kept is relatively high, and consequently the segment angle of the ink disc is relatively large overall, and thus larger swiveling paths would be required, for example, through a weft thread that is arranged on the far left in the direction of view of the ink disc a weft thread in the same direction in the
- Thread guide eyelet is arranged on the far right to replace. If, for example, according to the type of weft thread to be inserted, a certain number of weft threads are used during a predetermined weaving time, which in one of the partial color disks in their
- Thread guide eyelets are guided, so in this operating position, reliable operation and reliable provision of appropriate weft threads can only be achieved via this one
- Partial color disc can be reached. Only when a weft thread that is not used as often is to be inserted, or when a second group of weft threads is only needed from time to time, can the partial color disk, which was in the operating position, be pivoted from its operating position into a park position. Then the other partial color disk is pivoted back from its park position into its now desired operating position. Especially with a high number of weft threads, which should not all be used at the same time with the same frequency, this type of divided ink disc is advantageous in terms of shortening the movement paths of the ink disc.
- both drives for the two partial color discs are coordinated so that the movement of the two partial color discs in the sense of an integral color disc takes place as if the
- Color disc is formed in one piece. The division of the colored disc into two partial colored discs therefore offers a higher degree of flexibility overall in the selection of the corresponding ones to be entered
- the weft thread color selection device is designed at least as an elongated element in which thread guide eyes are arranged next to one another and each guide at least one weft thread.
- the thread guide eyelets are in turn open via an edge of the elongate element facing the gripper. This is to ensure that only the weft thread that is currently to be inserted and is in the sufficient position can be fed to the gripper. So that the other weft threads do not accidentally or unintentionally fall out of an open thread guide eyelet, a bar designed as a longitudinal bar is preferably provided, which in the
- Position of the elongate member has a slot.
- the edge of the thread guide eyelets is open towards a plane in which the hook is working. This ensures that the weft thread inserted into the shed over the open edge of the thread guide eyelet in the sufficient position is fed to the gripper without deflection. So when handing in what is to be introduced
- the weft thread of the weft thread does not undergo a sharp deflection, the elongated element and thus the thread guide eyelet or the one from which the weft thread is to be inserted into the shed, is moved or moved sideways in the direction of the gripper with respect to the fixed longitudinal bar that the weft thread extends this open
- Thread guide eyelet can be removed via the slot in the longitudinal bar and fed to the hook.
- the elongate element preferably has a first drive, which is preferably a linear motor. This first drive moves the elongated element towards it
- this drive can preferably also be a hydraulic cylinder or a pneumatic cylinder, this first drive being designed in such a way that a linear drive movement is made possible for the movement of the elongate element in its longitudinal extent.
- the elongate element it is also possible for the elongate element to consist of two separate parts, each of which has its own first drive for its movement in the respective longitudinal extent. This can ensure that the length of the elongated element can be halved, for example, in order to obtain greater compactness of the weft color selection device.
- the open ones that are not in their sufficient position are
- Thread guide eyes closed or covered by means of the longitudinal bar to secure the respective weft thread in its respective thread guide eye towards the edge thereof or
- the elongated element can thus be moved relative to the longitudinal bar in such a way that only the one in the respectively selected delivery position is located
- Thread guide eyelet is kept open because the longitudinal bar has its slot there. From this thread guide eyelet, the weft thread intended for entry into the shed is brought to the gripper by means of a dispensing needle.
- the delivery needle is preferably designed as a swivel bracket and has a second drive for swiveling the
- the swivel bracket is designed with a bracket height such that the weft threads held in the elongate element for weft insertion from the
- Handover needle when the respective weft thread with its open thread guide eyelet is in the handover position, can be overlapped without contact. If two sub-elements of the elongated element are arranged one above the other, the
- the height of the swivel bracket may be larger, but the length of the bracket is shorter in such a case, so that the stability is higher and the tendency to be susceptible to vibrations is lower.
- the longitudinal bar is spatially fixed with respect to its associated elongate element and is preferably arranged in front of or after the elongate element or in the height thereof in the weft feed direction in the form of the color disk in analogy to the exemplary embodiment with the weft color selection device.
- the longitudinal bar is preferably arranged as close as possible to the elongate element, preferably in sliding contact. “In its height” means that the elongate element is slidably or closely arranged on the longitudinal bar so that its movement until the thread guide eyelet is guided , from which the weft thread is to be inserted, to the slot, ie in the delivery position.
- the administration needle preferably has a lowering at its front area, also in the manner of an open eyelet. This lowering prevents a lateral loss of the weft thread to be transported to the gripper by means of the delivery needle during the
- the administration needle can be used with a lowering for a colored disk as well as for an elongated element with the corresponding open thread guide eyelets.
- the administration needle preferably has an open one
- Double lowering in the manner of a double fork With such a double lowering, it is possible to feed two weft threads side by side to a gripper at the same time.
- the size of the double lowering is preferably matched to the thread guide eyelet or to the distance between two adjacent thread guide eyelets in the elongated element or in the colored disk.
- the slot for releasing the weft threads to be inserted is for both the longitudinal bartack and the bartack for one
- Color disc designed with a width such that the weft threads provided for the double weft insertion can both be guided out of their respective thread guide eyelets substantially simultaneously with the delivery needle and transferred to the gripper.
- a system with two administration needles for the insertion of one weft thread each is preferably provided for the addition of weft threads to the gripper.
- the delivery needle or the delivery needles have a built-in weft tension measuring sensor in their respective lowering, by means of which the weft tension as well as the presence of a weft can be measured in the presence of a weft in such a lowering. This makes it possible to set a thread tension required or desired for an optimization for the weaving process.
- Figure 1 is a weft color selector in the form of a color disc, in which the
- Thread guide eyelet with weft thread to be inserted is in the position of delivery
- FIG. 2 shows a weft color selection device with the color disk according to FIG. 1, in which a delivery needle is designed for a double-weft insertion;
- Figure 3 shows a color disc with a ring-shaped bar for closing and securing the open thread guide eyelets for wefts not to be fed with a
- Figure 4 is a three-dimensionally shown weft color selection device in the form of a
- FIG. 5 shows the weft color selection device in a modified manner compared to FIG. 4
- Figure 6 shows the basic structure of a partial color disc and the principle of weft thread delivery with first and second partial color disc for single and double weft insertion
- FIG. 7 shows a weft color selection device in the basic construction according to FIG. 1, but according to an exemplary embodiment with a first and second partial color disk;
- FIG. 8 shows the example according to FIG. 7 in an enlarged representation at the moment the weft thread is passed to the gripper
- FIGS. 7 and 8 shows the embodiment according to FIGS. 7 and 8 in a three-dimensional representation with a lateral viewing direction
- Figure 10 shows an embodiment according to Figure 7, but for double-shot entry
- Figure 1 1 shows the embodiment of Figure 7 looking from behind the bartack with weft thread gripped by the delivery needle;
- Figure 12 shows another embodiment with two partial color disks, which in the same
- Swivel plane are arranged
- Figure 13 shows the embodiment of Figure 1 1, but for double-shot entry
- FIG. 14 shows an exemplary embodiment according to FIG. 7 for single-shot entry from a
- Thread guide eyelet in the second partial color disc Thread guide eyelet in the second partial color disc; and Figure 15 shows an embodiment analogous to Figure 14, but for double-shot entry.
- FIG. 1 shows a fabric section with a stretched shed 11, in which a weft thread color selection device 1 according to the invention in the form of a color disk 14 according to a first exemplary embodiment of the invention is shown on the side.
- the color disk 14 represents the actual thread guide 4 and has on its outer circumference thread guide eyelets 6 for weft threads, which are fed to the weft thread color selection device 1 from a pre-winding device, not shown.
- the thread guide eyelets are lowered into the colored disk 14 from the outer edge or the outside 13 or the opening of the thread guide eyelet 6.
- the weft color selection device 1 also has a delivery needle 12, which has a depression 21 at its front end, which is designed like a fork, so that between the prongs of the fork of the front end of the delivery needle 12, the weft thread 2 as soon as the ink disk 14 is in the delivery position 10 is through
- the gripper 3 which clamps the weft thread 2 to be inserted into the shed 11, is guided on a gripper guide rail 26 and, after the weft thread 2 has been clamped, takes the weft thread with it during its movement through the shed 11, so that it is inserted into the shed 11 .
- the weft thread 2 is subsequently struck at the binding point and thus tied in the fabric and the edge or catch bar.
- weft opening 2 of weaving shed 11 1 that follows is tied in fabric 24.
- the color disk 14 has a first drive 8, by means of which the respective
- Thread guide eyelet 6 is rotated into the delivery position 10, so that with the
- the delivery needle 12 is moved by means of a second drive 9.
- the number of different colors or different materials that can be used for the weft threads is defined by the number of thread guide eyes 6 in the color selection disk 14.
- the weft color selection device is designed as a double arrangement of two disk segments.
- the disk segment arranged at the front in the feed direction of the weft thread represents a bar 16 which serves to close the open thread guide eyelets of the disk segment 14 arranged at the rear in the feed direction of the weft thread, the weft threads of which should not be inserted into the shed.
- the front disc segment designed as a bolt 16 has a fixed position, whereas the disc segment 14 designed with the open thread guide eyelets can be rotated relative to the bolt 16. At least one weft thread is guided in each thread guide eyelet.
- the disc segment provided with the thread guide eyes 6 in the form of the colored disc 14 is now rotated such that the thread guide eye 6, from which a defined or selected weft thread 2 is to be transferred to the hook 3, is brought into line with a slot 15 (see FIG. 3) is so that the to be fed
- the thread guide eyelets which are not in the delivery position 10, are closed by the bolt 16 in order to prevent the stored weft threads from falling out unintentionally or unintentionally.
- the front disk segment provided with the slot 15 as a bolt 16 has a longitudinal slot 20 which runs parallel to the outer circumference of this disk segment and which has formed the slot 15 through an opening. Only if the slot 15 matches a defined thread guide eyelet, from which a corresponding weft thread is to be fed to a gripper, can the weft thread be fed to the gripper 3 without deflection by means of the delivery needle 12.
- the slot 15 in the front disk segment is formed radially to its outer circumference.
- the disk segment designed as a latch 16 is preferably arranged close to the ink disk 14, preferably even touching it.
- the Handing needle 12 of the weft thread 2 leads out of the thread guide eyelet 6, which is open to the outside, through the slot 15 in the bar 16 and in any case has no deflection at any edge with respect to the direct color disc 14, so that the weft thread 2 is not damaged or damaged on its exterior.
- FIG. 2 shows an arrangement of a weft color selection device 1 in the form of a
- Color disk 14 is shown, which corresponds to the reason according to the illustration according to FIG. 1, but in which the delivery needle 12 at its front end for simultaneous gripping of two weft threads for a double weft insertion has two depressions in the sense of a double depression 22, in each of which a weft thread 2 located.
- the distance between the depressions 21 in the front end of the delivery needle 12 essentially corresponds to the distance between the open thread guide eyes 6 in the color disk 14, so that when the delivery needle 12 is moved downward, two weft threads 2 are guided out of their respective thread guide eyes 6 and together Grippers 3 are fed for double weft insertion.
- the fabric 24 shown shows a finished piece of fabric with a cut edge or insert edge 25 and, from the binding point of the fabric in the right direction of the drawing, a stretched shed 11.
- FIG. 3 shows a double arrangement of disc segment-like ink disc 14 and also disc segment-like bolt 16.
- the bar 16 lying at the front in the double arrangement of the two disk segments is arranged in the weft insertion direction, followed by the ink disk 14 having the yarn guide eyes 6.
- Bolt 16 designed like a segment of a segment has a circular one in it
- the weft thread situation shown in FIG. 3 is therefore the one that has arisen after the color disk 14 with its thread guide eyelet 6, from which a corresponding weft thread 2 is to be fed to the hook 3, has been brought into register with the slot 15 of the bar 16 and this weft thread has been brought from the open thread guide eyelet 6 through the slot 15 into the transfer position, which is shown in FIG.
- a clamping device on the gripper 3 grips this weft thread and then introduces the weft thread into the shed.
- FIG. 4 shows a second exemplary embodiment according to the invention, in which the weft color selection device 1 is designed as an elongated element 17, in which thread guide eyelets 6 are provided next to one another downwards in the direction of the fabric 24.
- the thread guide 4, which is designed as an elongated element 17, is displaced by means of a first drive 8 in such a way that those in the respective ones open towards the underside
- Thread guide eyes 6 arranged weft threads 2 in the longitudinal direction by means of the first
- Delivery needle 12 has a lowering 21 at its front end.
- the longitudinal bar 18 is arranged between the thread guide 4 having closed eyes and the elongated element 17 having open eyes.
- the weft thread on the right in the illustration according to FIG. 4 is now aligned by means of the thread guide 4 such that the weft thread 2 is exactly in the position of the fixed longitudinal bar 18 in which the thread guide eyelet 6 of the elongate element 17 to the slot 15 in the longitudinal bar 18 is aligned, so that the weft is then by means of
- Thread guide eyelet 6 can be guided from exactly this sufficient position 10 to the transfer position to the gripper 3.
- the weft thread arranged on the left in FIG. 4 is arranged outside the slot 15 in the longitudinal bar 18 and therefore cannot are guided out of the corresponding thread guide eyelet without deflection.
- it is always the longitudinal bar 18 which closes the open thread guide eyelets, which applies to all those weft threads or weft thread guide eyelets with correspondingly inserted weft threads which are not currently intended for weft insertion.
- a delivery needle 12 designed as a swivel bracket 19 with a second drive 9 engages over the gripper 3 together with its gripper guide rail 26 and guides the weft thread 2 to be inserted into the shed 11 out of the thread guide eyelet 6 which is open at the bottom and guides it without deflection to the gripper 3, which clamps it and then enters it in the shed 11.
- 4 in the direction of entry for the weft in the front i.e. the first arranged thread guide 4 or the elongated element 17a with its closed eyelets is moved with a first drive 8 also arranged there essentially synchronously with the movement of the actual thread guide 4 or elongated element 17, so that additional deflections of the weft thread 2 on the way to the gripper 3 can be avoided.
- FIG. 5 shows the weft thread color selection device 1 in a three-dimensional representation modified in relation to FIG. 4, the viewing direction of the representation not taking place from above as much as is the case in FIG. 4, but rather from the side of the fabric.
- This has the advantage that the spatial arrangement of the various assemblies such as elongated element 17, 17a with thread guide eyelets 6, first drives 8 for the thread guides 4 and a second drive 9 for the swivel bracket 19 is better shown.
- FIG. 5 shows that the swivel bracket 19 has just guided the weft thread 2 out of the thread guide eyelet in the elongated element 17, which eyelet is open to the outside. For reasons of view, the slot 15 in the longitudinal bar 18 is not visible in this illustration according to FIG. 5.
- a needle weft tension measuring sensor 23 (see FIG. 3) is arranged on the delivery needle 12, which emits information or a signal relating to the prevailing thread tension. This can ensure that the
- Thread tension can be kept essentially constant or at a correspondingly desired value, which ensures optimal weaving conditions. Swivel bracket 19 and delivery needle 12 are moved back to their respective starting position after transfer of the weft thread 2 to the gripper 3.
- FIG. 6 shows the basic structure of a first partial color disk for the exemplary embodiment with two partial color disks arranged in parallel planes, a first partial color disk 14.1 and a second partial color disk 14.2.
- 6a shows that the first partial color disk 14.1 according to the invention has 13 thread guide eyelets 6.1 open to the outside.
- Weft threads 2 are provided for the second partial color disk 14.2 arranged according to FIG. 6b), in order to avoid that the thread guide eyelets 6.2 which are open to the outside there inadvertently lose the weft threads which are supplied and guided there in the thread guide eyes 6.2.
- This curved longitudinal slot 20.1 has a passage 15.1, which creates a connection from the longitudinal slot 20.1 to the outside of the first partial color disk 14.1.
- FIGS. 6b) and 6c) show the double arrangement of the first and the second partial color disks 14.1, 14.2.
- the hand-over needle 12 is drawn in, in accordance with FIGS. 6b) and 6c), to supply a weft thread from a thread guide eyelet 6.1 of the first partial color disk 14.1 on the one hand and a weft thread 2 from a on the other hand
- FIG. 6 b shows how a weft thread 2 with the number 5 is to be gripped from a thread guide eyelet 6.1 of the first partial color disk 14.1 by the delivery needle 12 and fed to the hook.
- Weft guide eyelet 6.2 of the second partial color disk 14.2 is to be fed to a gripper 3 via passage 15.1 after the weft thread has been gripped by the dispensing needle 12.
- FIG. 6d shows how two weft threads, which are designated with the numbers 2 and 3, from the thread guide eyelets by means of a dispensing needle 12 for a double weft insertion
- the first partial color disk 14.1 can be gripped by means of the delivery needle 12 and can be fed to the gripper 3.
- the second partial color disk 14.2 is not in action because it is pivoted to the side.
- FIG. 6e it is shown that the arrangement of a double partial color disk 14.1, 14.2 has a special feature in the double-shot entry, namely that neighboring ones
- Thread guide eyelets 6.2 in the second partial color disc 14.2 must be left empty (designated x) if a combination of weft threads is to be entered in which a weft thread, here number 4, consists of a thread guide eye 6.1 of the first partial color disc 14.1 and a weft thread, here the number 11, from a thread guide eyelet
- FIG. 6f A similar example is shown in FIG. 6f), wherein a weft thread with the number 4 from a thread guide eyelet 6.1 of the first partial color disc 14.1 and a weft thread with the number 9 from the second partial color disc 14.2 are to be fed to a gripper 3 by means of the dispensing needle 12 for a double weft insertion .
- the feed to the gripper 3 is not shown in FIGS. 6b) to 6f).
- Partial color discs 14.1 and 14.2 offer advantages with regard to a higher number of colors with the same lateral spacing of the thread guide eyes 6.1, 6.2, i.e. with constant line density. Alternatively, the lateral eyelet spacing can be increased and the same number of different weft threads can be retained. Overall, there are more possible combinations for a double-shot entry. In principle, the arrangement of two partial color disks 14.1, 14.2 even offers the possibility of retrofitting existing systems which previously only worked with one color disk in order to provide a larger number of colors or types for weft threads.
- FIG. 7 shows a basic arrangement of a weft color selection device 1, the basic structure of which corresponds to that of FIG. 1, but in which, according to the second aspect of the invention, two partial color disks 14.1, 14.2 in planes parallel to one another and in
- first partial color disc 14.1 and the second partial color disc 14.2 are arranged on a bolt 16 by means of a common pivot point or a common pivot axis. Both partial color disks have 13 open ones on their outside
- Gripper guide rail 26 is guided. As soon as the weft thread 2 passed to the gripper has been clamped by the latter, the weft thread is inserted into the shed 11.
- FIG. 7 three weft threads are drawn in FIG. 7, two weft threads being guided in thread guide eyes 6.1 of the first partial color disc 14.1, whereas in the second partial color disc 14.2 a weft thread is guided in a thread guide eye 6.2.
- two longitudinal slots 20 are provided which extend parallel to the outer circumference of the bolt 16.
- the hand-over needle 12 is arranged after the two partial color disks 14.1, 14.2, in such a way that the hand-over needle 12 is arranged in the region of the pivot axis of both partial color disks 14.1, 14.2 and such an alignment in its movement for gripping a weft thread and guiding it out allows the thread guide eyelet 6.1, which is open to the outside and released, of the respective partial color disc to the hook.
- the partial color disc 14.1 or the second partial color disc 14.2 are drawn in, which drive the two partial color discs independently of one another, so that the partial color discs 14.1 and 14.2 can be pivoted relative to one another. By pivoting against each other it is achieved that the first partial color disk 14.1 does not have to increase in its segment angle if the number of weft threads should increase.
- the partial color disk 14.2 arranged parallel to it is provided, which also has thread guide eyelets 6.2 open to the outside. In principle, the weft threads, which are guided in the thread guide eyes 6.2 of the second partial color disk 14.2, could slip out of the thread guide eyes 6.2, which are open to the outside.
- the administration needle 12 has a separate second drive 9, a total of three drive motors 8.1, 8.2 and 9 to be controlled and operated independently of one another are provided.
- Weft threads including the number of preferably different weft threads that can be reached.
- FIG. 8 shows the basic arrangement of the weft color selection device 1 according to FIG. 7, but in an enlarged partial view.
- Elongated arrangement extends.
- two weft threads 2 are drawn in, which are guided in two thread guide eyelets 6.1 lying next to one another, the ends of which have just been integrated into the fabric.
- Another weft thread 2 is currently from the
- Handing needle 12 is gripped in order to be guided to the clamping device of the gripper 3 so that it can then insert this weft thread into the shed 11.
- This third weft thread shown has been guided in a thread guide eyelet 6.2 of the second partial color disc 14.2 and has already been guided out of it by the delivery needle 12, namely from the thread guide eye 6.2 open to the outside through the passage (not shown) from the longitudinal slot 20.1 in the first partial color disc 14.1.
- the configuration of the weft color selection device 1 is shown in a three-dimensional representation in accordance with that of FIG. 8, but in a viewing direction opposite to the weft insertion direction.
- the first drive 8.1 is for the first
- the longitudinal slit 20.1 for guiding the weft threads is shown in the first partial color disk 14.1. which are led to the entry in the shed via the second partial color disk 14.2.
- the delivery needle 12 is not yet in a position in which the weft thread 2 can be gripped and guided out of the thread guide eyelet 6.2 of the second partial color disk 14.2.
- the second partial color disc 14.2 Before this weft thread is led out of the second partial color disc 14.2 by means of the dispensing needle 12, the second partial color disc 14.2 must first be pivoted to the right upward in the viewing direction of this partial color disc 14.2 until the thread guide eyelet 6.2 carrying this weft thread is congruent with the passage 15.1 in FIG is the first partial color disk 14.1, so that this weft thread can then be passed out of the second partial color disk 14.2 through the first partial color disk 14.1, so to speak, to the outside by means of the delivery needle 12.
- FIG. 10 shows a basic structure of the weft color selection device 1 according to FIG. 7, the only difference from this basic structure according to FIG. 7 being that the administration needle 12 is provided for a double weft insertion.
- two weft threads are guided in the first partial color disc 14.1 in thread guide eyelets 6.1 lying next to one another and are ready to be fed to the gripper 3 by means of the delivery needle 12 provided for the double weft insertion after the first partial color disc 14.1 has been pivoted so far relative to the bar 16 is that the passage of the longitudinal slot 20 in the bar 16 releases the two thread guide eyelets 6.1 to the outside.
- the three required drives namely the drive 9 for the delivery needle 12, the drive 8.1 for the first partial color disk 14.1 and the drive 8.2 for the second partial color disk 14.2, which three drives independently of one another for driving the respective ones, are clearly recognizable for the weft color selection device 1 according to the invention Elements are provided.
- FIG. 10 The illustration shown in FIG. 10 is when looking from behind at the
- Weft color selector 1 i.e. in the direction of the weft insertion, shown in Figure 1 1.
- the bar 16 which is arranged in a fixed manner, has two longitudinal slots 20 which run concentrically to one another and to the outer circumference, each of which has an opening for guiding out the weft threads guided in the longitudinal slots 20 to the outside via a slot 15, so that the weft threads ultimately exit from the outside open thread guide eyelets 6.1, 6.2 can be brought out by means of the delivery needle 12 and fed to the gripper 3, which is shown by way of example for one of the three weft threads shown in FIG. 11.
- FIG. 12 a first partial color disc 14.1 and a second partial color disc 14.2 are again shown, which, however, unlike in the exemplary embodiment according to FIGS. 7 to 11, are not shown in FIG.
- the partial color disc 14.1 and the partial color disc 14.2 have a common pivot point with respect to the bolt 16 and are articulated thereon. They can be swiveled independently of one another. This means that the first partial color disc 14.1 with its thread guide eyes 6.1 has a first drive 8.1 and the second partial color disc 14.2 with its thread guide eyes 6.2 has a first drive 8.2, whereas a further drive 9 is provided for driving the delivery needle 12.
- Each of the two partial color disks 14.1 and 14.2 can be one
- Partial color disc 14.1, 14.2 four thread guide eyelets 6.1, 6.2, so that this is equivalent to a single one when coordinated joint pivoting
- Color selection disc with eight thread guide eyelets is. In principle, this division of
- Color selection discs in one plane are advantageous if, for example, certain weft threads are used more often than others during a weaving period, whereas individual or other weft threads that are guided in the other partial color disc are only used occasionally.
- the partial color disc in order to reduce the movement path of the partial color disc, the partial color disc, the weft threads of which are not currently required, can be folded away from its operating position into a parking position. This allows the path of movement and thus the time for the provision of the respective weft threads to be reduced.
- FIG. 13 shows the view analogous to FIG. 1 1, in which only the dispensing needle 12 is provided for the simultaneous supply of two weft threads, ie for a double weft insertion. All other functions and structural features are identical to those previously described and are therefore not discussed here.
- FIG. 14 shows a representation in which two weft threads from the
- Weft color selection device 1 are provided, so to speak, but only a single weft thread is to be inserted with the hand-over needle 12 or is to be fed to the hook 3 by means of the hand-over needle 12.
- the second partial color disk 14.2 is brought into position, in which it is in register with the passage 15.1, so that the
- Partial color disc 14.1 can also be led out of the first partial color disc 14.1 via the passage 15.1 and can be fed and transferred to the gripper 3 for gripping and insertion into a shed 11.
- Figure 15 is a basic structure as shown in Figure 13 for one
- Double weft entry shown in which it is shown how the delivery needle 12 has two weft threads straight from the respective thread guide eyelets 6.1, 6.2 for the
- Double-shot entry takes to lead them out of the thread guide eyelets.
- the one weft thread is guided by the first partial color disc 14.1, while the second weft thread is guided by the second partial color disc 14.2, the one guiding it
- Thread guide eyelet 6.2 has just been brought congruent with the passage 15.1.
- the second partial color disk 14.2 has been pivoted relative to the first 14.1 into the position that the corresponding thread guide eyelet 6.2 with the passage 15.1
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018215395.7A DE102018215395B3 (de) | 2018-09-11 | 2018-09-11 | Webmaschine mit einer schussfadenfarbwahleinrichtung |
PCT/EP2019/065011 WO2020052822A1 (de) | 2018-09-11 | 2019-06-07 | Webmaschine mit einer schussfadenfarbwahleinrichtung |
Publications (2)
Publication Number | Publication Date |
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EP3850133A1 true EP3850133A1 (de) | 2021-07-21 |
EP3850133B1 EP3850133B1 (de) | 2022-07-27 |
Family
ID=66810826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19729540.5A Active EP3850133B1 (de) | 2018-09-11 | 2019-06-07 | Webmaschine mit einer schussfadenfarbwahleinrichtung |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3850133B1 (de) |
JP (1) | JP7262590B2 (de) |
CN (1) | CN112639192B (de) |
DE (1) | DE102018215395B3 (de) |
WO (1) | WO2020052822A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020214451B3 (de) | 2020-11-17 | 2021-11-11 | Lindauer Dornier Gesellschaft Mit Beschränkter Haftung | Schussfadenzuführvorrichtung mit klemmenscheibe |
CN112522840B (zh) * | 2020-11-26 | 2023-01-06 | 南京玻璃纤维研究设计院有限公司 | 一种选纬装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3092150A (en) * | 1959-06-02 | 1963-06-04 | Dewas Raymond | Weaving method and loom |
GB1002093A (en) | 1964-01-10 | 1965-08-25 | Webstuhlbau Grossenhain Veb | Improvements in or relating to weft change motions for looms having gripper shuttles |
BE894282A (nl) * | 1982-09-02 | 1983-01-03 | P V B A Van De Wiele Internat | Inslagstuurinrichting voor grijperweefmachines en grijperweefmachine met dergelijk inslagstuurinrichting uitgerust |
DE3808777A1 (de) | 1988-03-16 | 1989-10-05 | Wangner Gmbh Co Kg Hermann | Vorrichtung zur wahlweisen zufuehrung eines von mehreren schussfaeden zu einem greiferprojektil |
JPH0679781U (ja) * | 1993-04-14 | 1994-11-08 | 株式会社富永機械製作所 | 緯糸選択装置 |
DE4325905C1 (de) * | 1993-08-02 | 1994-10-06 | Dornier Gmbh Lindauer | Vorrichtung zum Zuführen von Schußfäden zu einem Schußfadeneintragorgan in Webmaschinen |
JP2001131847A (ja) | 1999-10-25 | 2001-05-15 | Ttm:Kk | レピア織機の緯糸誘導装置 |
ATE316162T1 (de) | 2003-07-10 | 2006-02-15 | Promatech Spa | Schussfadenzubringvorrichtung für webmaschinen mit einer einzigen zubringstange |
BE1017477A3 (nl) * | 2007-02-26 | 2008-10-07 | Picanol Nv | Een grijperweefmachine voorzien van een gevergrijper en een ombuiggeleiding. |
CN101314881B (zh) | 2008-06-25 | 2011-03-23 | 硕奇科技股份有限公司 | 织布打样机的选色机构 |
CN105274712A (zh) | 2015-10-28 | 2016-01-27 | 必佳乐(苏州工业园区)纺织机械有限公司 | 一种剑杆织机纬纱选择装置 |
-
2018
- 2018-09-11 DE DE102018215395.7A patent/DE102018215395B3/de not_active Expired - Fee Related
-
2019
- 2019-06-07 CN CN201980059421.2A patent/CN112639192B/zh active Active
- 2019-06-07 WO PCT/EP2019/065011 patent/WO2020052822A1/de unknown
- 2019-06-07 EP EP19729540.5A patent/EP3850133B1/de active Active
- 2019-06-07 JP JP2021537480A patent/JP7262590B2/ja active Active
Also Published As
Publication number | Publication date |
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JP2022500573A (ja) | 2022-01-04 |
DE102018215395B3 (de) | 2019-08-22 |
EP3850133B1 (de) | 2022-07-27 |
CN112639192A (zh) | 2021-04-09 |
CN112639192B (zh) | 2023-02-17 |
WO2020052822A1 (de) | 2020-03-19 |
JP7262590B2 (ja) | 2023-04-21 |
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