CN211036281U - Yarn separating unit and drawing-in machine - Google Patents
Yarn separating unit and drawing-in machine Download PDFInfo
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- CN211036281U CN211036281U CN201921552409.9U CN201921552409U CN211036281U CN 211036281 U CN211036281 U CN 211036281U CN 201921552409 U CN201921552409 U CN 201921552409U CN 211036281 U CN211036281 U CN 211036281U
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Abstract
The utility model discloses a yarn separating element for inciting somebody to action yarn from parallel first and second yarn layer separation, including layer selector and yarn separator, when the yarn is at the separation plane, yarn separator can follow the yarn layer separation with the yarn. The layer selector includes a drive motor and a cord tube configured to move a layer cord extending between first and second yarn layers. The cord tube is moved by the drive motor between a first selected position in which the layer cord pushes the first yarn layer yarns away from the separation plane and the second yarn layer yarns are in the separation plane; in the second selected position the layer cords urge the second yarn layer yarns away from the separation plane while the first yarn layer yarns are in the separation plane, wherein the cord tube is moved between the first and second selected positions by rotation only. The utility model also discloses a drawing-in machine that is equipped with this yarn separating element. Therefore, the utility model discloses can follow two yarn layers quickly separating yarn.
Description
Technical Field
The utility model relates to a yarn separating element and a drawing-in machine including this kind of yarn separating element for following two yarn layers separation yarn.
Background
It is known to perform 1: 1 lease, a warp sheet formed by two yarn layers. Layer cords are inserted between two layers of parallel yarns in the previous stage. The layer cords extend in a direction perpendicular to the direction in which the yarns extend and parallel to the plane of the yarn layer. The yarn layer selector is translationally movable in a direction perpendicular to the plane of the yarn layers to move the layer cords in that direction during yarn separation, according to programmed repeats from the drawing-in pattern, so that the yarns of the selected yarn layer can be separated and drawn through by the yarn separation unit. This prior art separation unit does not adapt well to high separation speeds.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a faster, more stable novel separation unit.
According to the invention, a yarn separating unit for separating yarn from parallel first and second yarn layers comprises a yarn separating device and a layer selector. The yarn separating device is capable of separating a yarn from its yarn layer when the yarn is located in a separation plane. The layer selector includes a drive motor and a cord tube configured to move a layer cord extending between first and second yarn layers. The cord tube is movable by the drive motor between a first selection position in which the layer cords push the yarns of the first yarn layer away from the separation plane and the yarns of the second yarn layer are located in the separation plane, and a second selection position in which the layer cords push the yarns of the second yarn layer away from the separation plane and the yarns of the first yarn layer are located in the separation plane, wherein the cord tube is movable only by rotation between the first and second selection positions.
According to another aspect of the invention, the cord tube includes a curved end defining the first end of the cord tube toward the first and second yarn layers and a straight cord tube body defining the central axis such that the first end is offset relative to the central axis of the cord tube body. The axis of rotation of the cord tube corresponds to the central axis of the cord tube body.
According to another aspect of the invention, the cord tube is hollow, the layer cords extending within the cord tube.
According to another aspect of the invention, the first and second selection positions are at an angle of 80 ° to 120 °, preferably 100 °, around the axis of rotation of the cord tube.
According to another aspect of the utility model, driving motor is by the controller according to programme-controlled repetitive drive.
According to the utility model discloses a further aspect, yarn separator includes the suction nozzle, and this suction nozzle can produce the negative pressure in the separation plane.
According to another aspect of the invention, the axis of rotation of the cord tube is offset from the separation plane.
According to another aspect of the invention, the yarn separating device further comprises a drive device for moving the suction nozzle along a translation axis relative to the selected yarn layer, the rotation axis of the cord tube being parallel to the translation axis.
According to another aspect of the invention, the yarn separating device comprises a detection device for detecting the separation result.
According to another aspect of the invention, a drawing-in machine is provided for drawing-in warp yarns of two parallel first and second yarn layers into a harness element of a loom, the drawing-in machine comprising a yarn separating unit according to the invention.
Drawings
The present invention will be described in detail using exemplary preferred embodiments with reference to fig. 1-5. However, this embodiment is not intended to limit the scope of the present invention in any way. In the drawings:
Fig. 1 shows an isometric view of a separation unit according to the invention, the yarn layer selector being shown in a first selection position in broken lines and a second selection position in solid lines.
Fig. 2 shows a top view of a separation unit according to the invention in a first selection position.
Fig. 3 shows the same view as fig. 2 after the yarn separation according to the yarn separating device of the present invention.
Fig. 4 shows a top view of a separation unit according to the invention in a second selection position.
Fig. 5 shows the same view as fig. 4 after the yarn separation according to the yarn separating device of the present invention.
Detailed Description
The utility model relates to a yarn separation unit 1, it has yarn layer selector 2, is used for separating yarn's yarn separator 3 and controller 4 from the warp piece that is formed by two parallel yarn layers.
The utility model discloses still relate to a drawing-in machine that is equipped with yarn separation element 1. The drawing-in machine is not shown in the drawings but is known from CN 102292485A. The drawing-in mechanism is configured to draw the warp threads of the two yarn layers into the harness elements of the loom, such as heddles, drop wires, reeds, after the yarn separating unit 1 separates the two yarn layers.
the first L1 and second L2 yarn layers each comprise a plurality of yarns T1, T2 extending parallel to each other and tensioned at least at two points in a clamping unit (not shown), fixed relative to the frame 20. the yarns of all the yarns of the two yarn layers L1, L2 extend parallel to the X axis.
the layer cord 26 is introduced between the two layers of yarns L1, L2 and extends along an axis Z perpendicular to the axes X and Y, so that along the axis Y all the yarns T1 of the first layer of yarns L1 extend on one side of the layer cord 26 and all the yarns T2 of the second layer of yarns L2 extend on the opposite side of the layer cord 26.
The yarn layer selector 2 includes a cord tube 21 and a drive motor 22 for rotating the cord tube 21. The drive motor 22 is a stepping motor, which is fixed to the frame 20.
the cord tube 21 is hollow and extends primarily along an axis Z from a first end 21A toward the cord layers L1, L2 to a second end 21B on which the pulley 23 is fixed the cord tube 21 includes a cord tube body 210, the cord tube body 210 being straight, centered about a central axis Z210 parallel to the axis Z and defining a second end 21B the cord tube body 210 is rotationally guided in the frame 20 by two bearings 24,25 the cord tube 21 also defines a first side 21C and a second side 21D along an axis Y the cord tube 21 has a curved end portion 211 forming an S-shape with the cord tube body 210 at the level of the first end 21A of the cord tube 21, such that the first end 21A of the cord tube 21 is offset relative to the central axis Z210 of the cord tube body 210 in a direction perpendicular to the axis Z.
a first longitudinal end of the layer cord 26 is introduced through the cord tube 21 such that the layer cord 26 extends within the cord tube 21 from the first end 21A to the second end 21b of the cord tube 21A second longitudinal end of the layer cord 26 is fixed relative to the frame 20 along the axis Z on the opposite side of the yarn layers L1, L2 and the layer cord 26 is stretched the layer cord 26 separates the two yarn layers L1, L2.
The output shaft of drive motor 22 extends parallel to but offset from cord tube body 210. The belt 27 ensures transmission of the rotational motion of the pulley, which equips the output shaft of the drive motor 22 to the pulley 23 of the cord tube 21. Thus, the drive motor 22 controls the rotation of the cord tube 21 about the central axis Z210 of the cord tube main body 210. Thus, the cord tube 21 moves between two angular positions, from a first selection position, in which the first end 21A extends on one side of the separation plane P30, to a second selection position, in which the first end 21A extends on the opposite side of the separation plane P30. The rotational amplitude a211 between the two selected positions is at an angle of 80 deg. -120 deg., for example about 100 deg., about the central axis Z210 of the cord tube body 210. The cord tube 21 is moved between the two selection positions only by rotation. As the cord tube 21 moves, it moves the first longitudinal end of the layer cord 26, which is inserted into the cord tube 21, and the second longitudinal end of the layer cord 26 remains fixed to the frame 20.
the yarn separating unit 3 comprises a suction nozzle 30, drive means (not shown) for moving the suction nozzle along a translation axis Z30 parallel to the Z-direction relative to the frame 20 to the yarn layers L1, L2, the detection means 31 being configured to detect the separation result, a guide plate 32 and storage means (not shown) for temporarily storing at least one yarn separated from the yarn layers, such suction nozzle 30 and such detection means 31 being known and described in CN1464922A the suction nozzle 30 comprises an opening 30A forming a thread receiver and a suction gap 30B through which the suction nozzle can generate a negative pressure acting as a vacuum effect and due to the negative pressure a deflection of the at least one yarn in the Z-direction in the separation plane P30.
The separation plane P30 is defined by the translation axis Z30 and the direction of yarn extension, axis X, and extends through the opening 30A and suction gap 30B of the suction nozzle 30.
The separating unit 1 further comprises a transport device (not shown) which is capable of moving the separated yarn from the suction nozzle to another position, for example for threading.
The guide plate 32 is fixed with respect to the frame 20 and is interposed along the axis Y between the layer cord selector 2 and the suction nozzle 30. The guide plate 32 includes a guide groove 32A having two guide surfaces, a gap 32B, and a transport groove 32C. The separation plane P30 extends through the guide groove 32A and the gap 32B.
The translation axis Z30 of the suction nozzle 30 is parallel but offset along the axis Y with respect to the central axis Z210 of the cord tube 21.
Separation plane P30 is offset along axis Y with respect to central axis Z210 of cord tube 21.
The drawing-in pattern defines a programmed repeat which causes the sequences of yarns T1, T2 to separate one after the other. The separation process works as follows: depending on the programmed repetition, the controller 4 drives the drive motor 22. The cord tube 21 is therefore rotated in the correct selected position, which enables the foremost yarn of the selected yarn layer to be separated from the next yarn, i.e. the yarn of the selected yarn layer closer to the suction nozzle 30 along the Z axis lies in the separation plane P30, facing the suction gap 30B of the suction nozzle 30 along the axis Z, while the other yarn layer is offset from the suction nozzle 30 along the Y axis.
if the programmed iteration requires the separation of the yarn from the second yarn layer L2, the cord tube 21 is placed in the first selected position, as shown in FIGS. 2 and 3.
in this first selected position, at least the forward most yarn T1 of first yarn layer L1 is pushed away from separation plane P30 by layer cord 26, and layer cord 26 is interposed between all yarns T1 of first yarn layer L1 and suction nozzle 30 yarn T2 of second yarn layer L2 lies in separation plane P30 and is thus free to enter gap 32B-second yarn layer L2 is in the selected configuration.
the controller 4 then drives the suction nozzle 30, the suction nozzle 30 being moved along the translation axis Z30 towards the gap 32B and towards the second yarn layer L2. the suction nozzle 30 generates a negative pressure to suck in the foremost yarn T2 of the second yarn layer L2. then, the suction nozzle 30 is retracted in the Z direction and places the separated yarn T2 in the detection position. in this detection position, a detection device 31 comprising a camera and a lighting device takes a picture of the separated yarn T2, and on the basis of this picture, the image processing device of the controller 4 can detect the separation result, i.e. whether only one yarn T2 has been separated and finally whether the separated yarn T2 has the correct color depending on the programmed repeat. the controller 4 controls the storage device according to the separation result. if the separation result is correct, the yarn transport pushes the yarn T2 along the second side 21D of the curtain 21 towards the second end 21B of the spool 21 and stops the negative pressure the separated yarn T2 is guided by the release yarn T3632. if the separation result is correct, i.e. the separation result is that the yarn T2 is pushed along the second side of the second yarn T21D of the curtain 21D, and the separation device has the color of the separation process is detected by the double-the separation device T3, and the separation process of the separation of the yarn T3 has been detected by the single yarn T2.
The next step of the yarn separation process can be performed.
if the next yarn to be separated is yarn T1 of first yarn layer L1, cord tube 21 is rotated to a second selected position to place first yarn layer L1 in front of the suction nozzle along axis Z. in the second selected position, as shown in fig. 4 and 5, at least the foremost yarn T2 of second yarn layer L2 is pushed away from separation plane P30 by layer cord 26, and layer cord 26 is interposed between all yarns T2 of the second yarn layer and suction nozzle 30. yarn T1 of first yarn layer L1 is located in separation plane P30 and can therefore freely enter the gap 32b between the two yarn guide surfaces-first yarn layer L1 is in the selected configuration-foremost yarn T1 of first yarn layer L1 is separated-if the separation result is correct, yarn delivery pushes separated yarn T1 along first side 21C of cord tube 21 towards second end 21b of cord 21-the separated yarn T1 is guided by guide plate 32.
As the separation process progresses, frame 20 moves relative to yarn layers L1, L2 and layer cords 26 slide within cord tube 21 so that yarn separation unit 1 can access all of the yarns of yarn layers L1, L2.
Due to the rotating cord tube 21, the layer cords 26 can be quickly placed in one of two selected positions, in order to be able to separate the yarns from the yarn layers according to programmed repetitions. The yarn layer selector 2 with the curved end 211 is simple and compact. The combination of the rotating yarn layer selector 2 and the suction nozzle 30 ensures a fast yarn separation. The rotary movement about the central axis Z210 offset from the separation plane P30 makes it possible to limit the amplitude of rotation a211 to between 80 ° and 120 ° in order to select the yarn more quickly.
As mentioned above, the yarn separating unit according to the invention can be used in a drawing-in machine. Alternatively, it can also be equipped with a dividing machine configured to insert a strand in the warp sheet, or with a tying machine configured to tie the old warp sheet and the new warp sheet together, or any warp preparation machine, requiring the separation of the yarn from the warp sheet with two layers of yarn.
The yarn separating unit has been described as having a suction nozzle, but yarn separation by prior art needles or by a rotating shaft as described in CN104695081A may also be compatible with the yarn separating unit and the yarn layer selector according to the present invention.
Claims (11)
1. yarn separating unit (1) for separating yarns (T1, T2) from parallel first and second layers (L1, L2) of yarns, characterized in that it comprises:
-a yarn separating device (3), said yarn separating device (3) being capable of separating yarns from their yarn layers when the yarns are located in a yarn separating plane (P30); and
a layer selector (2) comprising a drive motor (22) and a cord tube (21), the cord tube (21) being configured to move a layer cord (26) extending between the first and second yarn layers, the cord tube (21) being moved by the drive motor (22) between a first selected position in which the layer cord (26) urges yarns (T1) of a first yarn layer (L1) away from the separation plane (P30) and yarns (T2) of the second yarn layer (L2) lie in the separation plane (P30), and a second selected position in which the layer cord (26) urges yarns (T2) of a second yarn layer (L2) away from the separation plane (P30) and yarns (T1) of the first yarn layer (L1) lie in the separation plane (P30), wherein the cord (21) is moved between the first and second selected positions only by rotation.
2. Yarn separating unit (1) according to claim 1, characterized in that the cord tube (21) comprises:
a curved end portion (211) defining a first end (21A) of the cord tube facing the first and second layers (L1, L2) of yarns, and
A straight cord tube body (210) defining a central axis (Z210),
Such that the first end (21A) is offset relative to the central axis (Z210) of the cord tube body, and wherein the axis of rotation of the cord tube (21) corresponds to the central axis (Z210) of the cord tube body (210).
3. Yarn separating unit (1) according to claim 1 or 2, characterized in that the cord tube (21) is hollow and the layer cord (26) extends within the cord tube (21).
4. Yarn separating unit (1) according to claim 1 or 2, characterised in that the first and second selection positions are 80 ° to 120 ° around the axis of rotation of the cord tube (21).
5. Yarn separating unit (1) according to claim 4, characterised in that the first and second selection positions are at an angle of 100 ° around the axis of rotation of the cord tube (21).
6. Yarn separating unit (1) according to claim 1 or 2, characterized in that the drive motor (22) is driven by the controller (4) according to a programmed repetition.
7. Yarn separating unit (1) according to claim 1 or 2, characterised in that the yarn separating device (3) comprises a suction nozzle (30) which is capable of generating a negative pressure in the separation plane (P30).
8. Yarn separating unit (1) according to claim 7, characterised in that the axis of rotation of the cord tube (21) is offset from the separation plane (P30).
9. Yarn separating unit (1) according to claim 7, characterised in that the yarn separating device (3) further comprises a drive for moving the suction nozzle (30) along a translation axis (Z30) relative to the selected yarn layer, the axis of rotation of the cord tube (21) being parallel to the translation axis (Z30).
10. Yarn separating unit (1) according to claim 1 or 2, characterised in that the yarn separating device (3) comprises a detection device (31) for detecting a separation result.
11. a drawing-in machine for drawing-in warp yarns of two parallel first and second layers (L1, L2) of yarns into a harness element of a loom, characterized in that it comprises a yarn separating unit (1) according to claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921552409.9U CN211036281U (en) | 2019-09-18 | 2019-09-18 | Yarn separating unit and drawing-in machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921552409.9U CN211036281U (en) | 2019-09-18 | 2019-09-18 | Yarn separating unit and drawing-in machine |
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| CN211036281U true CN211036281U (en) | 2020-07-17 |
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| CN201921552409.9U Active CN211036281U (en) | 2019-09-18 | 2019-09-18 | Yarn separating unit and drawing-in machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112061879A (en) * | 2020-08-10 | 2020-12-11 | 深圳市海弘装备技术有限公司 | Yarn dividing module, drawing-in machine and yarn supplying method |
| EP4033020A1 (en) | 2021-01-25 | 2022-07-27 | Stäubli Sargans AG | Yarn-clamping device, yarn frame and drawing-in machine including such a yarn-clamping device, method for clamping yarns with such a yarn-clamping device |
-
2019
- 2019-09-18 CN CN201921552409.9U patent/CN211036281U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112061879A (en) * | 2020-08-10 | 2020-12-11 | 深圳市海弘装备技术有限公司 | Yarn dividing module, drawing-in machine and yarn supplying method |
| CN112061879B (en) * | 2020-08-10 | 2022-03-29 | 深圳市海弘装备技术有限公司 | Yarn dividing module, drawing-in machine and yarn supplying method |
| EP4033020A1 (en) | 2021-01-25 | 2022-07-27 | Stäubli Sargans AG | Yarn-clamping device, yarn frame and drawing-in machine including such a yarn-clamping device, method for clamping yarns with such a yarn-clamping device |
| EP4033021A1 (en) | 2021-01-25 | 2022-07-27 | Stäubli Sargans AG | Yarn-clamping device, yarn frame and drawing-in machine including such a yarn-clamping device |
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