CN115595709A - Weft yarn density adjusting device and method - Google Patents
Weft yarn density adjusting device and method Download PDFInfo
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- CN115595709A CN115595709A CN202211271024.1A CN202211271024A CN115595709A CN 115595709 A CN115595709 A CN 115595709A CN 202211271024 A CN202211271024 A CN 202211271024A CN 115595709 A CN115595709 A CN 115595709A
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000007246 mechanism Effects 0.000 claims abstract description 160
- 238000002788 crimping Methods 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 6
- 238000009941 weaving Methods 0.000 abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 230000001105 regulatory effect Effects 0.000 abstract 4
- 238000004804 winding Methods 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/06—Warp let-off mechanisms
- D03D49/10—Driving the warp beam to let the warp off
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/18—Devices for indicating warp tension
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/20—Take-up motions; Cloth beams
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/02—General arrangements of driving mechanism
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
- D03D51/12—Driving, starting, or stopping arrangements; Automatic stop motions for adjusting speed
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- Textile Engineering (AREA)
- Looms (AREA)
Abstract
The invention provides a weft density adjusting device and method, relates to the technical field of weaving machines, and solves the technical problem that in the prior art, the weft density of weaving machine equipment is unstable to adjust. The weft density adjusting device comprises a curling assembly and a let-off assembly which are arranged on two sides of an opening part of a palm frame, wherein the curling assembly comprises at least two adjusting rollers and a first driving mechanism, the first driving mechanism and the adjusting rollers are correspondingly arranged, and the first driving mechanism drives the adjusting rollers to move; the let-off component comprises a let-off roller and a second driving mechanism, and the second driving mechanism drives the let-off roller to move. Each regulating roller and the let-off roll are independently driven, so that the speed difference between the regulating rollers and the let-off roll can be flexibly regulated, the speed of each roller can be well maintained, the weft yarn density can be regulated more stably, the condition that the weft yarn density is influenced by the transmission slip of each roller is reduced, and the warp yarns can obtain larger radial tension.
Description
Technical Field
The invention relates to the technical field of weaving machines, in particular to a weft yarn density adjusting device and method.
Background
The ring loom is used as an important device for producing the bottom net of the papermaking felt, has irreplaceable effect, the quality of the produced bottom net directly influences the quality of a finished product, and the traditional ring loom controls the density of weft yarns by matching different gears and changing different transmission ratios, thereby realizing the control of different weft yarn densities. The palm frame is an important moving component of the loom and plays a role in opening and crossing warps, and a plurality of warps at the warp sending system pass through the opening part of the palm frame and then are wound on the weft density curling system. The warp let-off system of the traditional circular loom is a passive warp let-off, a warp beam friction plate is matched with a friction belt, warp yarns are pulled by a weft density curling system to realize the transmission of the warp yarns, and the warp let-off stability is extremely poor due to certain plasticity and a plurality of uncertain factors existing in the deformation of the warp yarns, so that the product quality is influenced.
In the aspect of weft density control of the existing loom equipment, a coiling mechanism of the existing loom equipment is uniformly controlled by a single-side gear box, and on a large-width loom, the coiling moment is transmitted unevenly, so that the horizontal weft density is uneven; the main transmission of the existing weaving machine equipment is that a common motor drives a relatively complex gear box, the power of the whole machine is output through the gear box, the adjustment is unstable, and a worm and worm wheel system on two sides of a winding mechanism of the existing weaving machine equipment is open, so that the winding is easy to slip under the condition of large force, and the weft yarn density is influenced.
In addition, the let-off mechanism of the existing loom equipment is adjusted by a single-side gear box, the moment transmission is uneven, the let-off in the banner direction is easy to be uneven, and the uneven weft density of the banner is influenced.
Therefore, how to solve the technical problem of unstable adjustment of weft yarn density by weaving machine equipment in the prior art becomes an important technical problem to be solved by the person skilled in the art.
Disclosure of Invention
The invention aims to provide a weft density adjusting device and method, which solve the technical problem that in the prior art, the adjustment of weaving machine equipment on the weft density is unstable. The technical effects that can be produced by the preferred technical scheme of the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the weft density adjusting device comprises a curling assembly and a let-off assembly, wherein the curling assembly and the let-off assembly are arranged on two sides of an opening part of a palm frame, the curling assembly comprises at least two adjusting rollers and a first driving mechanism, the first driving mechanism is arranged corresponding to the adjusting rollers, and the first driving mechanism drives the adjusting rollers to move; the let-off component comprises a let-off roller and a second driving mechanism, and the second driving mechanism drives the let-off roller to move.
Furthermore, the first driving mechanism and the second driving mechanism are servo driving structures, the first driving mechanism is arranged on two sides of the corresponding adjusting roller, and the second driving mechanism is arranged on two sides of the let-off roller.
Furthermore, the adjusting rollers are provided with two roller bodies, namely a first roller body and a second roller body, and the warp yarns are sent out by the warp sending roller and can be sequentially curled and wound on the first roller body and the second roller body.
Furthermore, the curling assembly further comprises a third roller body and a tension adjusting mechanism, the third roller body is arranged between the first roller body and the second roller body, warp yarns are sent out by the warp sending roller and can be sequentially curled and wound on the first roller body, the third roller body and the second roller body, the moving end of the tension adjusting mechanism is connected with the third roller body, and the moving end of the tension adjusting mechanism can drive the third roller body to be close to or far away from the first roller body and the second roller body.
Further, the tension adjusting mechanism is a screw rod lifter structure, an air cylinder structure or a hydraulic cylinder structure.
Further, still include control assembly and tension detection mechanism, first actuating mechanism with second actuating mechanism with control assembly looks communication connection, tension detection mechanism set up in let-off subassembly with between the curling subassembly, just tension detection mechanism is close to let-off subassembly sets up.
Further, the winding device further comprises a weft density identification mechanism, and the weft density identification mechanism is arranged close to the winding assembly.
The weft density adjusting method provided by the invention is based on the weft density adjusting device and comprises the following steps:
acquiring a current warp tension value and a current weft density value;
acquiring a preset warp tension value and a preset weft density value;
and adjusting the first driving mechanism of the curling assembly and the second driving mechanism of the let-off assembly according to the current warp tension value, the current weft density value, the preset warp tension value and the preset weft density value.
Further, the adjusting the first driving mechanism of the curling component and the second driving mechanism of the let-off component according to the current warp tension value, the current weft density value, the preset warp tension value and the preset weft density value includes:
if the current weft density value is less than the preset weft density value, the speeds of the first driving mechanism and the second driving mechanism are reduced, and if the current warp tension value is less than the preset warp tension value, the speed difference between the first driving mechanisms is increased, and/or the speed difference between the first driving mechanisms and the second driving mechanisms is increased.
Further, the adjusting the first driving mechanism of the curling component and the second driving mechanism of the let-off component according to the current warp tension value, the current weft density value, the preset warp tension value and the preset weft density value includes:
if the current weft density value is greater than the preset weft density value, increasing the speed of the first driving mechanism and the second driving mechanism, and if the current warp tension value is greater than the preset warp tension value, reducing the speed difference between the first driving mechanisms, and/or reducing the speed difference between the first driving mechanisms and the second driving mechanisms.
Compared with the prior art, the invention has the following beneficial effects:
according to the weft density adjusting device provided by the invention, the curling assembly and the let-off assembly are arranged, the curling assembly comprises at least two adjusting rollers and a first driving mechanism, the first driving mechanism and the adjusting rollers are correspondingly arranged, the first driving mechanism drives the adjusting rollers to move, the let-off assembly comprises the let-off roller and a second driving mechanism, the second driving mechanism drives the let-off roller to move, namely, each adjusting roller and the let-off roller are independently driven, the movement of each adjusting roller and the movement of the let-off roller can be respectively and independently adjusted according to use requirements, the adjusting rollers and the let-off roller can tension warp yarns, the speed difference between each adjusting roller and the speed difference between the adjusting roller and the let-off roller can be flexibly adjusted according to preset weft density and tension requirements, the speeds of each roller can be well maintained, compared with the prior art that a single-side speed reducer is controlled through a gear and a worm gear, the curling assembly and the let-off assembly are matched to rotate to adjust the weft density more stably, the condition that the transmission slip of each roller affects the density is reduced, and the let-off rollers are matched with a plurality of adjusting rollers, warp yarns, and warp yarns can be tensioned under the condition that the warp yarns are uniformly controlled in the radial direction, and the warp yarns can be more thick and the warp products can be produced under the condition that the warp yarns are more heavy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a weft density adjusting device provided in an embodiment of the present invention;
FIG. 2 is a schematic illustration of the positions of a dancer roll and a let-off roll provided by an embodiment of the present invention;
FIG. 3 is a schematic illustration of a weft density adjustment method provided by an embodiment of the present invention;
fig. 4 is a schematic flow chart of weft density adjustment provided by the embodiment of the invention.
FIG. 1-crimping assembly; 2-let-off assembly; 3-adjusting the roller; 4-a first drive mechanism; 5-let-off roll; 6-a second drive mechanism; 7-a first roller body; 8-a second roller body; 9-a third roller body; 10-warp yarns; 11-a tension adjustment mechanism; 12-a tension detection mechanism; 13-opening part of palm frame.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a weft density adjusting device and method, which solve the technical problem that in the prior art, the adjustment of weaving machine equipment on weft density is unstable.
Hereinafter, embodiments will be described with reference to the drawings. The embodiments described below do not limit the contents of the invention described in the claims. The entire contents of the configurations shown in the following embodiments are not limited to those required as solutions of the inventions described in the claims.
The technical solution of the present invention will be described in detail with reference to specific examples.
Example 1:
referring to fig. 1-2, the weft density adjusting device provided in this embodiment includes a curling component 1 and a let-off component 2 disposed at two sides of a opening portion 13 of a palm frame, the curling component 1 includes at least two adjusting rollers 3 and a first driving mechanism 4, the first driving mechanism 4 is disposed corresponding to the adjusting rollers 3, and the first driving mechanism 4 drives the adjusting rollers 3 to move, that is, the first driving mechanism 4 corresponds to the adjusting rollers 3 one by one, so as to form independent driving; the let-off component 2 comprises a let-off roller 5 and a second driving mechanism 6, the second driving mechanism 6 drives the let-off roller 5 to move, the arrangement is that each adjusting roller 3 of the crimping component 1 is provided with a corresponding first driving mechanism 4, the let-off roller 5 of the let-off component 2 is provided with a corresponding second driving mechanism 6, so as to independently drive each adjusting roller 3 and the let-off roller 5, the movement of each adjusting roller 3 and the let-off roller 5 can be respectively and independently adjusted according to use requirements, the adjusting rollers 3 and the let-off rollers 5 can tension warp yarns 10, the speed difference between each adjusting roller 3 and the speed difference between the adjusting rollers 3 and the let-off rollers 5 can be flexibly adjusted according to preset weft yarn density and tension requirements, the speed of each adjusting roller 3 and the speed of each let-off roller 5 can be well maintained, compared with a single-side speed reducer in the prior art, the speed reducer and a worm gear are uniformly controlled, the crimping component 1 and the let-off component 2 can be more stably adjusted to the weft yarn density, the conditions that the weft yarn density is influenced by transmission slip of each roller 5, the let-off roller 5 and the let-off roller can be more stably matched with other weft yarn density adjusting rollers, and the warp adjusting roller can be used for producing thick warp loom weaving machine under the condition that the warp yarn density is more unstable, and the warp density adjusting technology, and the warp yarn density adjusting roller can be more thick warp loom, and the warp yarn density adjusting device can be more stable.
Example 2:
referring to fig. 1-2, this embodiment further defines the structure of the weft density adjusting device on the basis of embodiment 1. The weft density adjusting device comprises a curling component 1 and a let-off component 2 which are arranged on two sides of a palm frame opening part 13, the curling component 1 comprises at least two adjusting rollers 3 and a first driving mechanism 4, the first driving mechanism 4 is arranged corresponding to the adjusting rollers 3, and the first driving mechanism 4 drives the adjusting rollers 3 to move; the let-off component 2 comprises a let-off roller 5 and a second driving mechanism 6, and the second driving mechanism 6 drives the let-off roller 5 to move. Wherein, first actuating mechanism 4 and second actuating mechanism 6 are servo drive structure, servo drive structure has splendid stability, high accuracy, and can quick response, first actuating mechanism 4 sets up in the both sides of the dancer roll 3 that corresponds, second actuating mechanism 6 sets up in the both sides of let-off roll 5, the both ends of a dancer roll 3 all are provided with first actuating mechanism 4 and drive promptly, the both ends of let-off roll 5 all set up second actuating mechanism 6 and drive, can make each position atress of axial direction of dancer roll 3 and let-off roll 5 more even, make banner direction let-off and the tensioning to warp 10 also more even, and then make the woof density of banner also more even, make the roughness of exempting from more optimize.
As an optional implementation manner of the embodiment of the present invention, the adjusting roller 3 is provided with two rollers, which are denoted as a first roller body 7 and a second roller body 8, and the warp 10 is sent out by the let-off roller 5 and can be sequentially wound around the first roller body 7 and the second roller body 8, so that the winding assembly 1 is arranged in parallel by the first roller body 7 and the second roller body 8, and the warp 10 can be bent and wound around the two roller bodies respectively, so that the contact length and the contact wrap angle between the warp 10 and the winding assembly 1 can be greatly increased, and the speed difference between the first roller body 7 and the second roller body 8 can be freely and flexibly changed, so that the winding assembly 1 can tension the warp 10 with a larger force in the warp direction, and the tension adjustment of the warp 10 by the winding assembly 1 can obtain a larger adjustment range, and the adjustment of the tension range can be performed.
Further, the crimping assembly 1 further comprises a third roller body 9 and a tension adjusting mechanism 11, the third roller body 9 is arranged between the first roller body 7 and the second roller body 8, the third roller body 9 can be used as a driven roller, the warp yarns 10 are sent out by the let-off roller 5 and can be sequentially crimped and wound on the first roller body 7, the third roller body 9 and the second roller body 8, the contact length and the contact wrap angle between the warp yarns 10 and the crimping assembly 1 can be greatly increased, and the crimping assembly 1 can tension the warp yarns 10 in a warp direction with larger strength. The tension adjusting mechanism 11 can be erected at two end positions of the third roller body 9, a base of the tension adjusting mechanism 11 can be fixedly connected with a frame body of the loom, a moving end of the tension adjusting mechanism 11 is connected with the third roller body 9, the moving end of the tension adjusting mechanism 11 can move the third roller body 9 to be close to or far away from the first roller body 7 and the second roller body 8 through telescopic movement, preferably, the moving direction of the moving end of the tension adjusting mechanism 11 can be along the front-back direction of the loom, the arrangement is such that when tension of the warp yarn 10 needs to be adjusted, the moving end of the tension adjusting mechanism 11 can drive the third roller body 9 to be gradually far away from the first roller body 7 and the second roller body 8, so that the third roller body 9 is gradually contacted with the warp yarn 10 and moves along with the third roller body 9, the contact wrap angle and the contact length of the third roller body 9 and the warp yarn 10 are gradually increased, and the speeds of the first roller body 7 and the second roller body 8 can be adjusted relative to the warp feeding roller 5 through the first driving mechanism 4, the speed difference between the first roller body 7 and the second roller body 8 is increased, and the tension of the warp yarn 10 can be gradually increased. Similarly, the moving end of the tension adjusting mechanism 11 can drive the third roller 9 to gradually approach the first roller 7 and the second roller 8, so that the contact wrap angle and the contact length of the third roller 9 and the warp 10 are gradually reduced until the third roller 9 is separated from the warp 10, and the speed of the first roller 7 and the speed of the second roller 8 can be reduced relative to the let-off roller 5 through the first driving mechanism 4, and the speed difference between the first roller 7 and the second roller 8 is reduced, so that the tension on the warp 10 can be gradually reduced. According to the invention, the third roller body 9 and the tension adjusting mechanism 11 are additionally arranged, so that the tension adjusting range of the warp yarns 10 by the curling assembly 1 can be further increased.
Wherein, one side or both sides of third roll body 9 also can be provided with first actuating mechanism 4 to make the third roll body 9 also can obtain drive power, can adjust the speed difference between first roll body 7, second roll body 8 and the third roll body 9 and carry out multiple tensioning to warp 10, and through setting up third roll body 9 between first roll body 7 and the second roll body 8, also can form transition stage to the regulation dynamics of warp 10.
Further, the tension adjusting mechanism 11 is a screw rod lifter structure, an air cylinder structure or a hydraulic cylinder structure, that is, the tension adjusting mechanism 11 can be a motor-driven screw rod lifter mechanism, so that the position of the third roller 9 can be controlled more accurately, and the reliability is high. Or, the tension adjusting mechanism 11 can also directly push the third roller 9 by using an air cylinder structure or a hydraulic cylinder structure, and has the advantages of simple structure, stable and convenient adjustment and use and good pressure bearing performance.
As an optional implementation manner of the embodiment of the present invention, the weft density adjusting apparatus further includes a control component and a tension detection mechanism 12, the control component may include a controller, the tension detection mechanism 12, the first driving mechanism 4 and the second driving mechanism 6 are in communication connection with the controller of the control component, the tension detection mechanism 12 is disposed between the let-off component 2 and the crimping component 1, and the tension detection mechanism 12 is disposed near the let-off component 2, the tension detection mechanism 12 may be but not limited to a tension sensor, the control component may include a controller which may be but not limited to a PLC programmable logic controller commonly used in the prior art, and its specific structure is similar to that of the prior art, which is not described herein again.
The control assembly can comprise a first obtaining unit, a second obtaining unit and an adjusting unit, wherein the first obtaining unit is used for obtaining a current warp tension value and a current weft density value, the second obtaining unit is used for obtaining a preset warp tension value and a preset weft density value, the adjusting unit is used for adjusting the first driving mechanism 4 of the curling assembly 1 and the second driving mechanism 6 of the let-off assembly 2 according to the current warp tension value, the current weft density value, the preset warp tension value and the preset weft density value, and the first obtaining unit, the second obtaining unit and the adjusting unit can be arranged in the controller or independent of the controller and can be in communication connection. The control assembly may further comprise a human-computer interaction unit for a user to input information such as a preset tension value and a preset weft density value.
Furthermore, the weft density adjusting device also comprises a weft density identifying mechanism, the weft density identifying mechanism is arranged close to the curling component 1 and is in communication connection with the control component, and the weft density identifying mechanism can detect the current weft density value on the warp yarns 10 on the front side or the rear side of the curling component 1, so that the control component can adjust the speeds of the first driving mechanism 4 and the second driving mechanism 6 and the speed difference between the two according to the preset weft density value and the current weft density value, and a woven product has the required weft density.
The weft density identification mechanism can be but not limited to a laser imaging system or a visual detection structure, can directly shoot and image a product to obtain a weft density numerical value, or can also be an arithmetic unit which can be in communication connection with the control assembly, can directly calculate to obtain the current weft density value according to the current warp tension value, the speeds of the first driving mechanism 4 and the second driving mechanism 6, the speed difference between the two speeds and the weaving speed of weft yarns, even the radial sizes of the warp yarns 10 and the weft yarns, and can be selected according to actual requirements.
Example 3:
referring to fig. 3 to 4, the weft density adjusting method provided in this embodiment is based on the weft density adjusting device, and includes:
acquiring a current warp tension value and a current weft density value;
acquiring a preset warp tension value and a preset weft density value;
the respective first drive 4 of the crimping assembly 1 and the second drive 6 of the let-off assembly 2 are adjusted in dependence on the current warp tension value, the current weft density value, the preset warp tension value and the preset weft density value.
With the arrangement, the device can actually detect the current warp tension value and the current weft density value, when the current warp tension value deviates from the preset warp tension value or the current weft density value deviates from the preset weft density value, the speed of the first driving mechanism 4 and the speed of the second driving mechanism 6 can be timely adjusted, the speed difference between the first driving mechanism 4 and the second driving mechanism 6 can be timely adjusted, so that the running speed of the warp 10 can be increased or decreased, the tension of the warp 10 can be adaptively increased or decreased, the weaving density of the weft on the warp 10 can be increased or decreased under the condition that other conditions are inconvenient, each of the first driving mechanism 4 and the second driving mechanism 6 is independently driven, the adjustment is more sensitive, the running is more stable, the weaving process of the weft is also more stable, and the weft density is more uniform.
As an alternative implementation of the embodiment of the present invention, the adjusting of the first driving mechanism 4 of the crimping assembly 1 and the second driving mechanism 6 of the let-off assembly 2 according to the current warp tension value, the current weft density value, the preset warp tension value and the preset weft density value comprises:
if the current weft density value is smaller than the preset weft density value, the speeds of the first driving mechanism 4 and the second driving mechanism 6 are reduced, that is, the running speed of the warp yarn 10 can be properly reduced, so that a greater number of weft yarns can be woven on the warp yarn 10 in the same time to increase the current weft density value, and if the current warp tension value is smaller than the preset warp tension value, the speed difference between the first driving mechanism 4 and/or the speed difference between the first driving mechanism 4 and the second driving mechanism 6 is increased, that is, the warp yarn 10 can be further tensioned, the tension of the warp yarn 10 is increased, so that more weft yarns can be woven on the unit length of the warp yarn 10, so that the current weft density value is further increased, the warp feeding component 2 and the curling component 1 tension the warp yarn 10, the influence of the plasticity of the warp yarn 10 on the weft yarn weaving is also reduced, the warp feeding process is more stable, the weft yarn can be woven by the preset weft yarn, and the weft density is more uniform and stable.
As an alternative implementation of the embodiment of the present invention, the adjusting of the first driving mechanism 4 of the crimping assembly 1 and the second driving mechanism 6 of the let-off assembly 2 according to the current warp tension value, the current weft density value, the preset warp tension value and the preset weft density value comprises:
if the current weft density value is greater than the preset weft density value, the speeds of the first driving mechanism 4 and the second driving mechanism 6 are increased, that is, the running speed of the warp 10 can be properly increased, so that the adhering weaving number of the weft on the warp 10 can be reduced in the same time, so as to reduce the current weft density value, and if the current warp tension value is greater than the preset warp tension value, the speed difference between the first driving mechanisms 4 is reduced, and/or the speed difference between the first driving mechanism 4 and the second driving mechanism 6 is reduced, that is, the warp 10 can be slightly relaxed, the tension of the warp 10 is reduced, so that a smaller number of wefts can be woven in the unit length of the warp 10, and thus the current weft density value can be further reduced, the wefts can be woven in the preset weft density value, and the weft density is more uniform and stable.
In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The weft density adjusting device is characterized by comprising a curling assembly (1) and a warp feeding assembly (2) which are arranged on two sides of a palm frame opening part (13), wherein the curling assembly (1) comprises at least two adjusting rollers (3) and a first driving mechanism (4), the first driving mechanism (4) is arranged corresponding to the adjusting rollers (3), and the first driving mechanism (4) drives the adjusting rollers (3) to move; the let-off component (2) comprises a let-off roller (5) and a second driving mechanism (6), and the second driving mechanism (6) drives the let-off roller (5) to move.
2. Weft yarn density adjusting device according to claim 1, characterized in that the first driving mechanism (4) and the second driving mechanism (6) are servo driving structures, the first driving mechanism (4) being arranged on both sides of the corresponding adjusting roller (3), the second driving mechanism (6) being arranged on both sides of the let-off roller (5).
3. Weft yarn density adjusting device according to claim 1, characterized in that the adjusting roller (3) is provided with two roller bodies, namely a first roller body (7) and a second roller body (8), and the warp yarn (10) is delivered by the let-off roller (5) and can be sequentially wound around the first roller body (7) and the second roller body (8).
4. Weft density adjusting device according to claim 3, characterized in that the crimping assembly (1) further comprises a third roller body (9) and a tension adjusting mechanism (11), the third roller body (9) is arranged between the first roller body (7) and the second roller body (8), the warp yarn (10) is fed out by the let-off roller (5) and can be sequentially crimped and wound on the first roller body (7), the third roller body (9) and the second roller body (8), a moving end of the tension adjusting mechanism (11) is connected with the third roller body (9), and a moving end of the tension adjusting mechanism (11) can move the third roller body (9) to be close to or far away from the first roller body (7) and the second roller body (8).
5. Weft yarn density adjusting device according to claim 4, characterized in that the tension adjusting mechanism (11) is a lead screw elevator structure, a cylinder structure or a hydraulic cylinder structure.
6. Weft yarn density adjusting device according to claim 1, characterized in that it further comprises a control assembly and a tension detection mechanism (12), the first drive mechanism (4) and the second drive mechanism (6) being in communication connection with the control assembly, the tension detection mechanism (12) being arranged between the let-off assembly (2) and the crimping assembly (1), and the tension detection mechanism (12) being arranged close to the let-off assembly (2).
7. Weft yarn density adjusting device according to claim 6, characterized in that it further comprises a weft density identification mechanism, which is arranged close to the crimping assembly (1).
8. A weft density adjusting method based on the weft density adjusting apparatus according to any one of claims 1 to 7, comprising:
acquiring a current warp tension value and a current weft density value;
acquiring a preset warp tension value and a preset weft density value;
and adjusting the first driving mechanism (4) of the curling component (1) and the second driving mechanism (6) of the let-off component (2) according to the current warp tension value, the current weft density value, the preset warp tension value and the preset weft density value.
9. Weft yarn density adjusting method according to claim 8, characterized in that the adjusting of the first driving mechanism (4) of the crimping assembly (1) and the second driving mechanism (6) of the let-off assembly (2) as a function of the current warp yarn tension value, the current weft yarn density value, the preset warp yarn tension value and the preset weft yarn density value comprises:
-reducing the speed of the first drive mechanism (4) and the second drive mechanism (6) if the current weft density value is less than a preset weft density value, and-increasing the speed difference between the first drive mechanism (4) and/or-increasing the speed difference between the first drive mechanism (4) and the second drive mechanism (6) if the current warp tension value is less than a preset warp tension value.
10. Weft yarn density adjusting method according to claim 8, characterized in that the adjusting of the first driving mechanism (4) of the crimping assembly (1) and the second driving mechanism (6) of the let-off assembly (2) as a function of the current warp yarn tension value, the current weft yarn density value, the preset warp yarn tension value and the preset weft yarn density value comprises:
-increasing the speed of the first drive mechanism (4) and the second drive mechanism (6) if the current weft density value is greater than a preset weft density value, and-decreasing the speed difference between the first drive mechanism (4) and/or-decreasing the speed difference between the first drive mechanism (4) and the second drive mechanism (6) if the current warp tension value is greater than a preset warp tension value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211271024.1A CN115595709A (en) | 2022-10-17 | 2022-10-17 | Weft yarn density adjusting device and method |
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| CN202211271024.1A CN115595709A (en) | 2022-10-17 | 2022-10-17 | Weft yarn density adjusting device and method |
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| CN202211271024.1A Pending CN115595709A (en) | 2022-10-17 | 2022-10-17 | Weft yarn density adjusting device and method |
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| CN116791267A (en) * | 2023-08-29 | 2023-09-22 | 江苏辰烜消防科技有限公司 | Warp let-off roller device for knitting of circular loom |
| WO2024124851A1 (en) * | 2022-12-16 | 2024-06-20 | 苏州汇川控制技术有限公司 | Loom system and fabric quality control method |
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