CN113060600A - Tension maintaining mechanism and drawing-in machine - Google Patents
Tension maintaining mechanism and drawing-in machine Download PDFInfo
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- CN113060600A CN113060600A CN202110289966.1A CN202110289966A CN113060600A CN 113060600 A CN113060600 A CN 113060600A CN 202110289966 A CN202110289966 A CN 202110289966A CN 113060600 A CN113060600 A CN 113060600A
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- warp
- hook
- yarn
- driving
- driving device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H57/00—Guides for filamentary materials; Supports therefor
- B65H57/04—Guiding surfaces within slots or grooves
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
- D03J1/00—Auxiliary apparatus combined with or associated with looms
- D03J1/14—Apparatus for threading warp stop-motion droppers, healds, or reeds
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
Abstract
The invention discloses a tension maintaining mechanism and a drawing-in machine. Wherein, the first main body is provided with an air injection hole. The wire guide is fixed in first main part, and the wire guide includes the guide table, and the wire casing is injectd jointly to the side of the first main part of orientation of guide table and the side that first main part was provided with the fumarole, and the fumarole is arranged in the warp jet of face in the wire casing, makes the warp keep tension. Through set up the fumarole on the wire guide, utilize fumarole spun air current to come to exert the effort to the warp in the wire guide, realized keeping the tensile purpose of warp, and because of this in-process, the warp does not have and takes place sliding friction with other solids, has effectively solved the problem of broken yarn, has improved the efficiency of threading.
Description
Technical Field
The invention relates to the technical field of textile equipment, in particular to a tension maintaining mechanism and a drawing-in machine.
Background
In order to make the thread drawing mechanism complete the drawing of the warp threads, a tension maintaining mechanism is often needed to ensure that the warp threads cut by the yarn cutting mechanism still have enough tension.
In the related art, a yarn clamp is generally provided in a tension holding mechanism, and a yarn clamp is used to hold tension of warp yarns, so that yarn breakage is likely to occur when warp yarns with weak strength and toughness are extracted due to friction between the yarn clamp and the warp yarns, and the yarn threading efficiency is seriously affected.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a tension maintaining mechanism which can effectively avoid the occurrence of yarn breakage.
The invention also provides a drawing-in machine with the tension maintaining mechanism.
A first aspect embodiment of the present invention provides a tension maintaining mechanism, comprising:
the gas injection device comprises a first main body, a second main body and a gas injection hole, wherein the first main body is provided with the gas injection hole;
the side surface of the guide table facing the first main body and the side surface of the first main body provided with the air injection holes jointly define a guide groove, and the air injection holes are used for injecting air to warp yarns in the guide groove and keeping the warp yarns in tension.
According to the tension maintaining mechanism provided by the embodiment of the invention, at least the following technical effects are achieved:
through set up the fumarole on the wire guide, utilize fumarole spun air current to come to exert the effort to the warp in the wire guide, realized keeping the tensile purpose of warp, and because of this in-process, the warp does not have and takes place sliding friction with other solids, has effectively solved the problem of broken yarn, has improved the efficiency of threading.
According to the tension maintaining mechanism of some embodiments of the present invention, the guide member further includes a limit table fixed to the guide table, the limit table for ensuring an air blowing range of the warp yarn passing through the air blowing hole.
An embodiment of a second aspect of the invention provides a drawing-in machine comprising:
the yarn cutting mechanism is arranged above the tension maintaining mechanism and is used for cutting the upper end of the warp in the yarn cutting curtain;
the yarn taking piece is provided with a yarn clamping groove used for binding the warp yarns;
according to the tension maintaining mechanism of the embodiment of the first aspect of the invention, the thread take-off member is used for pulling the warp thread into the thread clamping groove.
The drawing-in machine provided by the embodiment of the invention at least has the following technical effects:
after the upper end of the warp is cut off by the yarn cutting mechanism, the tension of the warp is maintained by the aid of the tension maintaining mechanism through air flow sprayed by the air spraying holes, yarn breakage is effectively avoided, and yarn threading efficiency is improved.
According to some embodiments of the invention, the cutting mechanism includes a second body, a first cutting plate fixed to the second body, a second cutting plate fixed to the second body, and a first driving device having an output end fixed to the second cutting plate, the first driving device being capable of moving the second cutting plate relative to the first cutting plate, the first cutting plate and the second cutting plate being configured to cut an upper end of the warp yarn.
The drawing-in machine according to some embodiments of the present invention further comprises a detection device including an optical system and an image processing system, the optical system being electrically connected to the image processing system, the optical system being configured to acquire an image of the warp yarns separated from the veils, the image processing system being configured to acquire parameters of the warp yarns from the image.
The drawing-in machine according to some embodiments of the invention further comprises a drawing-in mechanism, the drawing-in mechanism comprises a drawing-in member, the drawing-in member comprises a third main body and a drawing-in hook, the drawing-in hook is fixed on the third main body, the third main body is used for penetrating through a reed dent of a stop, a heddle or a reed, and the drawing-in hook is used for hooking the warp yarn to move so that the warp yarn penetrates through at least one of the stop, the heddle and the reed.
According to the drawing-in machine of some embodiments of the invention, the thread drawing-out mechanism further comprises a thread sliding hook, the thread sliding hook is arranged above the thread drawing-out piece and can move relative to the thread drawing-out piece, and the thread sliding hook is used for assisting the thread drawing-out hook in taking out the warp.
According to the drawing-in machine of some embodiments of the invention, the drawing-out mechanism further comprises an auxiliary drawing-out table, the auxiliary drawing-out table comprises a guide surface, a guide groove is formed in the guide surface, the drawing-out hook can be accommodated in the guide groove, and when the drawing-out hook is accommodated in the guide groove, the guide surface is used for being attached to the warp yarns, so that the drawing-out hook can hook the warp yarns.
According to the drawing-in machine of some embodiments of the invention, the drawing-in mechanism further comprises a second driving device, the second driving device comprises a driving wheel and a plurality of driving protrusions uniformly arranged on the wheel surface of the driving wheel, the third body is provided with a plurality of driving holes, the driving protrusions can be inserted into the driving holes, and the second driving device is used for enabling the third body to linearly move.
According to some embodiments of the drawing-in machine of the invention, the wire drawing-out mechanism further comprises a third driving device, an output end of the third driving device is used for being connected with the steel reed, and the third driving device is used for driving the steel reed to move, so that the wire drawing-out piece can pass through each dent of the steel reed.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic perspective view of a tension maintaining mechanism when warp yarns are uncut in an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a tension maintaining mechanism when warp yarns are cut according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a drawing-in machine according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a schematic perspective view of a drawing-in machine according to another embodiment of the present invention;
FIG. 6 is a partial enlarged view of FIG. 5 at B;
fig. 7 is a partial enlarged view at C in fig. 5.
Reference numerals: the yarn drawing device comprises a tension maintaining mechanism 100, a first body 110, an air injection hole 111, a vent valve 112, a yarn guide 120, a guide table 121, a yarn guide groove 122, a limiting table 123, a yarn cutting mechanism 200, a second body 210, a first shearing plate 220, a second shearing plate 230, a first driving device 240, a yarn taking part 300, a yarn bundling groove 310, an optical system 400, a first camera 410, a second camera 420, a yarn drawing mechanism 500, a yarn drawing part 510, a third body 511, a yarn drawing hook 512, a driving hole 513, a yarn sliding hook 520, an auxiliary yarn drawing table 530, a guiding surface 531, a guiding groove 532, a second driving device 600, a driving body 610, a driving wheel 620, a driving protrusion 621, a yarn curtain 700, a warp yarn 701, an upper clamping strip 710, a lower clamping strip 720, a warp stop 810, a heddle 820, a reed 830 and a reed dent 831.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
A tension maintaining mechanism 100 according to an embodiment of the present invention is described below with reference to fig. 1 and 2.
The tension maintaining mechanism 100 according to the embodiment of the first aspect of the present invention includes a first body 110 and a wire guide 120.
Wherein, the first body 110 is provided with an air injection hole 111. The wire guiding member 120 is fixed to the first body 110, the wire guiding member 120 includes a guide table 121, a side surface of the guide table 121 facing the first body 110 and a side surface of the first body 110 provided with an air injection hole 111 jointly define a wire guiding groove 122, and the air injection hole 111 is used for injecting air to warp yarns 701 in the wire guiding groove 122 to keep the warp yarns 701 in tension.
Specifically, the tension maintaining mechanism 100 includes a first body 110 and a wire guide 120, an air injection hole 111 is provided on one side surface of the first body 110, a vent valve 112 is provided on the other side surface of the first body 110, the vent valve 112 is connected to an air supply device, and the air injection hole 111 communicates with an air supply channel of the vent valve 112, so that an air flow provided by the air supply device can be injected from the air injection hole 111.
The wire guide 120 is fixed to the side of the first body 110 where the gas ejection hole 111 is formed by welding, screwing, or other fastening means. The wire guide 120 includes a guide table 121 therein, an upper surface of the guide table 121 is parallel to a central axis of the air injection hole 111, and a height of the upper surface of the guide table 121 is lower than a highest point of the air injection hole 111, and preferably, the upper surface of the guide table 121 is just as high as the lowest point of the air injection hole 111 so that the air flow ejected from the air injection hole 111 can flow along the upper surface of the guide table 121. At this time, the side of the guide table 121 facing the first body 110 and the side of the first body 110 facing the guide table 121 together define a space in which an opening is formed, i.e., the wire guide groove 122.
In a specific use process, a part of the warp yarn 701 enters the wire guide groove 122 through the opening of the wire guide groove 122, and the warp yarn 701 passes through the wire guide groove 122 from top to bottom and stops moving before the air injection holes 111. When the upper end of the warp 701 is cut by the yarn cutting mechanism 200, the air flow ejected from the air ejection hole 111 applies a force to the portion of the warp 701 located in the yarn guide groove 122, and the portion of the warp 701 located above the guide table 121 is extended in a direction away from the first body 110 in a direction parallel to the central axis of the air ejection hole 111 by the force. It will be understood that the warp yarns 701 are always subjected to the air flow ejected from the air ejection holes 111 during their extension in a direction away from the first body 110, so that tension is always maintained.
It can be understood that, in the process of maintaining tension, the warp 701 is not subjected to sliding friction with a solid except for acting force generated by air flow and self gravity, and the flexible traction force generated by the air flow is not easy to exceed the bearing range of the warp, so that the warp is not easy to break in the process of maintaining tension, thereby solving the problem of yarn breakage in the process of maintaining tension of the warp 701 and further improving the yarn threading efficiency.
In addition, the diameter of a single warp 701 is usually small, and the weight difference of the warps 701 made of different materials is also small under the same diameter, and the traction force provided by the airflow is a range value and can adapt to different types of warps, so that the common warps 701 made of different diameters and different materials can keep tension under the action of the airflow ejected from the air ejecting holes 111. Such a design also effectively extends the range of applicability of the tension maintaining mechanism 100.
In some embodiments of the present invention, the guiding element 120 further comprises a position-limiting table 123, the position-limiting table 123 is fixed to the guiding table 121, and the position-limiting table 123 is used for ensuring the air injection range of the warp 701 passing through the air injection hole 111.
Specifically, the wire guide 120 further includes a limiting table 123, one end surface of the limiting table 123 is fixed to the first body 110 by welding or screwing, and the guide table 121 is fixed to the other adjacent side surface of the limiting table 123. A certain distance exists between the upper surface of the guide table 121 and the upper surface of the limiting table 123, and the upper surface of the limiting table 123 is located above the upper surface of the guide table 121. Meanwhile, the connecting position of the side surface of the guide stage 121 connected to the limit stage 123 and the upper surface of the guide surface 531 is located within the flowing range of the air flow ejected from the air ejection hole 111.
In a specific use process, when a part of the warp yarn 701 enters the guide groove 122, the warp yarn does not need to be specially concerned about the position of the warp yarn, and only needs to continuously move until the warp yarn is restrained by the side surface of the limit table 123 connected to the guide table 121. It can be understood that the design of the limiting platform 123 ensures that a part of the constrained warp 701 is located in the flow range of the air flow ejected from the air ejection holes 111, thereby ensuring that the air flow ejected from the air ejection holes 111 can effectively apply acting force to the warp whose upper end is cut off, and accelerating the threading efficiency.
A tension maintaining mechanism 100 according to an embodiment of the present invention is described below with reference to fig. 3 to 7.
The drawing-in machine according to the second aspect embodiment of the present invention comprises a cutting mechanism 200, a take-up member 300 and a tension maintaining mechanism 100 according to the above-described first aspect embodiment of the present invention.
The yarn cutting mechanism 200 is used for cutting the upper end of the warp 701 in the yarn cutting curtain. The yarn taking device 300 is provided with a binding groove 310, and the binding groove 310 is used for binding the warp yarn 701. The take-off 300 is used to pull the warp yarn 701 into the yarn guide groove 122.
Specifically, the yarn cutting mechanism 200 is located above the yarn taking-out member 300 and the tension maintaining mechanism 100, and includes a second body 210, a first cutting plate 220, and a second cutting plate 230. The first cutting plate 220 and the second cutting plate 230 are both connected to the second body 210, and when the first cutting plate 220 is hinged to the second body 210, the second cutting plate 230 may be fixed to the second body 210, or may be hinged to the second body 210. When the first cutting plate 220 can linearly move in the direction of the second cutting plate 230, the second cutting plate 230 may be fixed to the second body 210, and may also linearly move in the direction of the first cutting plate 220.
It is to be understood that the first shear plate 220 and the second shear plate 230 represent only different components, and in some cases, the above description is still true after the names of the two have been interchanged.
Regardless of the manner of connection between the first shear plate 220 and the second shear plate 230 and the second body 210, the ultimate purpose is to cut the warp yarns 701 sandwiched between the first shear plate 220 and the second shear plate 230.
In actual use, the upper ends of the warp yarns 701 are uniformly fixed on the upper clamping strip 710, the lower ends of the warp yarns are fixed on the lower clamping strip 720, and the upper clamping strip 710, the warp yarns 701 and the lower clamping strip 720 jointly form the linear screen 700. In order to sequentially separate the warp yarns 701 in the yarn curtain 700 from the outside to the inside for the threading process, a yarn taking member 300 is provided in the threading machine.
One end of the yarn taking piece 300 is provided with a bunching groove 310, the bunching groove 310 is in a V shape, a suction port can be arranged at the bottom of the bunching groove 310, the warp 701 can be adsorbed in an adsorption mode, a small clamping groove with a small diameter can also be arranged, and the warp 701 can be clamped by the small clamping groove. In order to prevent warp 701 from being damaged, a suction port is preferably provided for suction. And the design of the 'V' shape ensures that when the bunching groove 310 binds the warp 701, two side walls of the bunching groove 310 can play a guiding role, and the binding efficiency is improved.
Meanwhile, the other end of the yarn taking member 300 is connected to a fourth driving device (not shown), which may be a pneumatic or hydraulic driving device. Under the action of the fourth driving device, the yarn taking-off member 300 can move linearly at the same level. At this time, the positions where the first cutting plate 220 and the second cutting plate 230 can cut the warp 701 are located right above the bottom of the wire guide groove 122 in the tension holding mechanism 100, or located on the same side of the bottom of the wire guide groove 122 as the direction in which the end of the yarn taking device 300 connected to the driving device is located.
In a specific use process, the warp 701 of the yarn curtain 700 closest to the yarn taking part 300 is clamped or adsorbed in the bunching groove 310 of the yarn taking part 300. Then, under the driving of the yarn taking device 300, the upper end of the warp 701 moves to the position where the first cutting plate 220 and the second cutting plate 230 can complete the cutting operation, and at this time, a part of the warp 701 enters the wire guiding slot 122 and is located in the range through which the air flow ejected from the air ejection holes 111 flows. Then, the upper ends of the warp yarns 701 are cut by the cooperation of the first shear plate 220 and the second shear plate 230, and extend in a direction away from the first body 110 against the upper surface of the guide table 121 by the air flow ejected from the air ejection holes 111, and the tension is maintained by the continued action of the air flow.
It can be understood that, the position of the warp 701 is defined by the yarn taking-off member 300, and after the upper end of the warp 701 is cut by the yarn cutting mechanism 200, the tension of the warp 701 is maintained by the air flow ejected from the air injection holes 111 by using the tension maintaining mechanism 100, so that the occurrence of yarn breakage is effectively avoided, and the yarn threading efficiency is improved.
In some embodiments of the present invention, the yarn cutting mechanism 200 includes a second body 210, a first cutting plate 220, a second cutting plate 230, and a first driving device 240, the first cutting plate 220 is fixed to the second body 210, the body of the first driving device 240 is fixed to the second body 210, the output end of the first driving device 240 is fixed to the second cutting plate 230, the first driving device 240 is capable of moving the second cutting plate 230 relative to the first cutting plate 220, and the first cutting plate 220 and the second cutting plate 230 are used for cutting the upper end of the warp yarn 701.
Specifically, the first cutting plate 220 is fixed to one side of the second body 210 by a fastening member or welding, and the like, and the yarn cutting mechanism 200 further includes a first driving device 240, where the first driving device 240 may be a pneumatic or hydraulic device, and the like. The body of the first driving device 240 is fixed to the side of the second body 210, to which the first cutting plate 220 is fixed, by a fastener, and is located at a side where the cutting edge of the first cutting plate 220 is located. Meanwhile, the output end of the first driving device 240 is fixed to the second shear plate 230, the cutting edge of the second shear plate 230 is arranged towards one side where the first shear plate 220 is located, and under the action of the first driving device 240, the second shear plate 230 can move towards the direction close to or far away from the first shear plate 220, so that the matching state of the cutting edge of the first shear plate 220 and the cutting edge of the second shear plate 230 can be changed.
In a specific using process, when the yarn taking piece 300 pulls the upper end of the warp yarn 701 to the position where the first shearing plate 220 and the second shearing plate 230 can complete the shearing work, the first driving device 240 drives the second shearing plate 230 to move towards the direction of the first shearing plate 220 until the cutting edge of the first shearing plate 220 is matched with the cutting edge of the second shearing plate 230, and at this time, the upper end of the warp yarn 701 is disconnected under the combined action of the cutting edge of the first shearing plate 220 and the cutting edge of the second shearing plate 230, and the yarn shearing operation is completed.
It can be understood that under the design, only one driving device needs to be arranged in the yarn cutting device, the yarn cutting device is simplified to a certain extent, and the linear motion is more efficient than the hinged fixed shaft rotation, so that the yarn cutting efficiency is also improved.
In some embodiments of the present invention, the detecting device further comprises an optical system 400 and an image processing system, the optical system 400 is electrically connected to the image processing system, the optical system 400 is configured to acquire an image of the warp 701 separated from the curtain 700, and the image processing system is configured to acquire parameters of the warp 701 according to the image.
Specifically, the optical system 400 includes a first camera 410 and a second camera 420, and both the first camera 410 and the second camera 420 are electrically connected to the image processing system through wires. The first camera 410 and the second camera 420 have different imaging angles, and have overlapping imaging areas, and the overlapping areas are named as detection areas.
When the picking member 300 bound with the warp 701 enters the detection, the first camera 410 and the second camera 420 acquire pictures of the warp 701 from different angles and transmit the acquired pictures to the image processing system. With the above-mentioned pictures, the image processing system can determine the number of the warp yarns 701 bound by the yarn taking device 300, and when the number of the warp yarns 701 bound by the yarn taking device 300 is determined to be one, the yarn taking device 300 can continue to pull the warp yarns 701 to the position where the first shearing plate 220 and the second shearing plate 230 can perform the shearing operation.
It can be understood that the arrangement of the detection device effectively avoids the occurrence of the condition of errors in subsequent threading due to the fact that the plurality of warp yarns 701 are bound by the yarn taking piece 300 at the same time, and the working quality of the drawing-in machine is improved.
As an improvement of the above solution, the image processing system may further obtain more parameters of the warp yarn 701 through pictures taken by the first camera 410 and the second camera 420, where the parameters include, but are not limited to, the diameter, shape and/or cross-sectional size of the warp yarn 701, the color of the warp yarn 701, whether torsion occurs, the torsion direction when torsion occurs, the torsion number per unit length when torsion occurs, and the like. Therefore, more detailed detection of the warp 701 is realized, and the working quality of the drawing-in machine is further improved.
In some embodiments of the present invention, the drawing mechanism 500 further comprises a drawing mechanism 500, the drawing mechanism 500 comprises a drawing member 510, the drawing member 510 comprises a third body 511 and a drawing hook 512, the drawing hook 512 is fixed to the third body 511, the third body 511 is configured to pass through a stop block 810, a heddle 820 or a dent 831 of a reed 830, and drives a warp 701 hooked by the drawing hook 512 to move, so that the warp 701 passes through at least one of the stop block 810, the heddle 820 and the reed 830.
Specifically, the thread drawing mechanism 500 functions to pass the warp yarn 701, which maintains tension, through the stop block 810, the healds 820, and the dents 831 of the reed 830 in sequence at one time or in multiple times. Each reed 830 has a dent 831 corresponding to a warp stop 810 and a heddle 820, and for simplification of the drawings, only one warp stop 810 and one heddle 820 are shown in fig. 3 and 5.
The thread drawing mechanism 500 comprises a thread drawing part 510, the thread drawing part 510 comprises a third main body 511 and a thread drawing hook 512, the third main body 511 is in a slender strip shape and can sequentially penetrate through a hole on the warp stop plate 810, a hole on the heddle 820 and a dent 831 of the reed 830. In actual use, one end of the third body 511 close to the line screen 700 is provided with the line drawing hook 512, and the line drawing hook 512 is fixed to the third body 511 by welding or integral molding. The thread take-up hook 512 is in the shape of a hook, and is used for hooking the warp 701 still maintaining tension in the tension maintaining mechanism 100.
In a specific use process, after the yarn cutting mechanism 200 finishes cutting the upper end of the warp 701, the tension maintaining mechanism 100 is used to maintain the tension of the warp 701, but only the lower end of the warp 701 is still fixed on the lower clamping strip 720 in the curtain 700, and the upper end of the warp is in a free-floating state. At this time, the thread drawing member 510 is disposed between the lower clip strip 720 and the tension maintaining mechanism 100, the thread drawing hook 512 finishes the hooking of the warp yarn 701, and then the thread drawing hook 512 drives the warp yarn 701 to pass through the stop block 810, the heald 820 and the reed 830 one or more times by the driving of the third body 511, thereby finishing the threading operation.
It can be understood that such a design allows a high threading efficiency of the threader.
In some embodiments of the present invention, the thread drawing mechanism 500 further includes a thread sliding hook 520, the thread sliding hook 520 is disposed above the thread drawing member 510, the thread sliding hook 520 is capable of moving relative to the thread drawing member 510, and the thread sliding hook 520 is used for assisting the thread drawing hook 512 in hooking the warp yarn 701.
Specifically, the slide wire hook 520 is in a hook shape, the root of which is fixed to the output end of a fifth driving device (not shown), under the action of the fifth driving device, the slide wire hook 520 can move linearly or rotate around a fixed axis relative to the tension maintaining mechanism 100, and the opening of the slide wire hook 520 always faces the side of the wire guide groove 122 where the opening is provided. The fifth driving device may be a pneumatic cylinder or a hydraulic cylinder, or a driving device composed of a motor and a crank structure, and it is understood that the specific form of the fifth driving device can be adaptively adjusted according to actual requirements and the movement type of the wire hook 520.
In a specific using process, the warp 701 passes through the opening of the slide wire hook 520 and is bent under the driving of the slide wire hook 520, in this process, a portion of the warp 701 below the slide wire hook 520 is lapped on the third main body 511, and a certain pressure is applied to the third main body 511, so that the warp 701 can be always attached to the upper surface of the third main body 511 when the third main body 511 linearly moves on the same horizontal height. At this time, since the opening of the draw hook 512 is also upward, the warp 701 adhered to the upper surface of the third body 511 is always inserted through the opening of the draw hook 512 and hooked by the draw hook 512 as long as the inclination angle of the warp 701 at this time is adjusted.
It can be understood that the auxiliary operation of the sliding hook 520 effectively improves the hooking of the drawing member 510 to the warp 701, thereby improving the threading efficiency.
In some embodiments of the present invention, the thread drawing mechanism 500 further includes an auxiliary thread drawing stage 530, the auxiliary thread drawing stage 530 includes a guide surface 531, a guide slot 532 is disposed on the guide surface 531, the thread drawing hook 512 can be received in the guide slot 532, and when the thread drawing hook 512 is received in the guide slot 532, the guide surface 531 is configured to engage with the warp threads, so that the thread drawing hook 512 can hook the warp threads.
Specifically, the upper surface of the auxiliary thread drawing bench 530 is a guide surface 531, the guide surface 531 is an inclined surface, and a section of the warp thread 701 is tightly attached to the guide surface 531 under the action of the thread sliding hook 520. Thus, the section of warp yarn 701 abutting against the guide surface 531 is inclined at the same angle as the guide surface 531, and the guide surface 531 is inclined at an angle required to ensure that the warp yarn 701 will always pass through the opening of the draw-off hook 512.
A guide groove 532 is provided on the guide surface 531, the guide groove 532 extends in the same direction as the third body 511, and the width of the guide groove 532 is equal to or slightly greater than the thickness of the thread take-up hook 512, so that the thread take-up hook 512 can be received in the guide groove 532. Due to the design of the guide surface 531, the inclined angle of the warp 701 tightly attached to the third main body 511 can be hooked by the thread drawing hook 512, so that the threading efficiency is effectively improved.
As an improvement of the scheme, the edges of the guide surfaces 531 are rounded, so that the warp 701 is prevented from being scratched.
In some embodiments of the present invention, the thread drawing mechanism 500 further includes a second driving device 600, the second driving device 600 includes a driving wheel 620, and a plurality of driving protrusions 621 uniformly disposed on a tread of the driving wheel 620, the third body 511 is provided with a plurality of driving holes 513, the driving protrusions 621 can be inserted into the driving holes 513, and the second driving device 600 is configured to linearly move the third body 511.
Specifically, the second driving device 600 includes a driving body 610 and a driving wheel 620, the driving wheel 620 is fixed to the driving body 610, a central axis of the driving wheel 620 coincides with a central axis of the driving body 610, the driving wheel 620 is capable of performing fixed-axis rotation with respect to the driving body 610, and a power source of the driving wheel 620 may be a stepping motor or a rotary cylinder. The driving wheel 620 has a plurality of driving protrusions 621 provided on an outward side thereof at regular intervals, and the driving protrusions 621 may be formed in a semi-spherical shape or a circular truncated cone shape.
Correspondingly, a plurality of driving holes 513 are arranged on the third main body 511, wherein the spacing distance of the driving holes is equal to the arc distance of the driving protrusion 621, or the driving holes 513 are in a multiple relation with the arc distance of the driving protrusion 621, and the driving holes 513 can be through holes or blind holes. In actual use, the side of the third body 511 facing the second driving device 600 is tangent to the outer side of the driving wheel 620, and at the same time, the driving protrusion 621 can be inserted into the driving hole 513. In practical use, when the driving protrusion 621 is inserted into the driving hole 513, the peripheral wall of the driving protrusion 621 can apply a force to the hole wall of the driving hole 513 under the driving of the driving wheel 620, so as to drive the third body 511 to linearly move.
It can be understood that, with such a design, the thickness requirement of the third body 511 is low, thereby realizing the automatic linear movement of the thread drawing member 510 while ensuring that the third body 511 can smoothly pass through the warp stop 810, the heddle 820 and the dent 831.
In some embodiments of the present invention, the thread drawing mechanism 500 further comprises a third driving device, an output end of the third driving device is connected to the reed 830, and the third driving device is used for driving the reed 830 to move, so that the thread drawing member 510 can pass through each dent 831 of the reed 830.
Specifically, to further improve the automation degree, a third driving device (not shown) is further included in the wire drawing mechanism 500, and the third driving device is a linear driving device, and may be a pneumatic or hydraulic driving device. The output end of the third driving device is fixed on the side of the reed 830, so that the third driving device can drive the reed 830 to move linearly on the same horizontal plane, and the maximum moving range is larger than the distance between the reed dent 831 closest to the third driving device and the reed dent 831 farthest from the third driving device, so that each reed dent 831 can pass through the reed 830 on the premise that the wire drawing part 510 only has one degree of freedom.
In a specific use process, when the thread drawing hook 512 with the warp threads 701 carries the warp threads out of one dent 831 of the reed 830 (i.e. out of the side of the reed 830 far from the warp stop 810 and the heald 820), the reed 830 moves by the width of the one dent 831, so that when the thread drawing piece 510 passes through the reed 830 again, the passed dent 831 changes, and thus the threading operation of each warp thread 701 in the thread screen 700 is realized.
Through such design, effectively improved the degree of automation of drawing-in machine to the biography warp efficiency of drawing-in machine has been improved.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A tension maintaining mechanism, comprising:
the gas injection device comprises a first main body, a second main body and a gas injection hole, wherein the first main body is provided with the gas injection hole;
the side surface of the guide table facing the first main body and the side surface of the first main body provided with the air injection holes jointly define a guide groove, and the air injection holes are used for injecting air to warp yarns in the guide groove and keeping the warp yarns in tension.
2. The tension maintaining mechanism according to claim 1, wherein the thread guide further comprises a stopper table fixed to the guide table, the stopper table being for ensuring an air blowing range of the warp thread passing through the air blowing hole.
3. Drawing-in machine, its characterized in that includes:
the tension maintaining mechanism of any one of claims 1 or 2;
and the yarn shearing mechanism is arranged above the tension maintaining mechanism and is used for shearing the upper end of the warp in the yarn cutting curtain.
4. The drawing-in machine according to claim 3, characterized in that the cutting mechanism comprises a second body, a first cutting plate fixed to the second body, a second cutting plate fixed to the second body, and a first driving device having an output fixed to the second cutting plate, the first driving device being capable of moving the second cutting plate relative to the first cutting plate, the first cutting plate and the second cutting plate being configured to cut the upper ends of the warp yarns.
5. The drawing-in machine according to claim 3, characterized in that it further comprises a detection device comprising an optical system and an image processing system, said optical system being electrically connected to said image processing system, said optical system being adapted to acquire images of said warp yarns separated from said veils, said image processing system being adapted to acquire parameters of said warp yarns from said images.
6. The drawing-in machine according to claim 3, further comprising a drawing-in mechanism comprising a drawing-in member comprising a third body and a drawing-in hook, the drawing-in hook being fixed to the third body, the third body being adapted to pass through a dent of a warp stop, a heddle or a reed, the drawing-in hook being adapted to hook the movement of the warp yarn to pass the warp yarn through at least one of the warp stop, the heddle and the reed.
7. The drawing-in machine according to claim 6, characterized in that the thread take-up mechanism further comprises a thread take-up hook disposed above the thread take-up member, the thread take-up hook being movable relative to the thread take-up member, the thread take-up hook being configured to assist the thread take-up hook in taking up the warp thread.
8. The drawing-in machine according to claim 7, characterized in that the drawing-in mechanism further comprises an auxiliary drawing-in table, the auxiliary drawing-in table comprises a guide surface, a guide groove is arranged on the guide surface, the drawing-in hook can be accommodated in the guide groove, and when the drawing-in hook is accommodated in the guide groove, the guide surface is used for being attached to the warp yarns so that the drawing-in hook can hook the warp yarns.
9. The drawing-in machine according to claim 6, characterized in that the thread drawing-in mechanism further comprises a second driving device, the second driving device comprises a driving wheel and a plurality of driving protrusions uniformly arranged on the wheel surface of the driving wheel, the third body is provided with a plurality of driving holes, the driving protrusions can be inserted into the driving holes, and the second driving device is used for enabling the third body to linearly move.
10. The drawing-in machine according to claim 6, characterized in that the drawing-in mechanism further comprises a third driving device, the output end of the third driving device is used for connecting the reed, and the third driving device is used for driving the reed to move, so that the drawing-in piece can pass through each dent of the reed.
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| CN113060600B (en) | 2022-11-29 |
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