CN115597971B - Unfolding type yarn strength testing device and yarn strength testing method thereof - Google Patents
Unfolding type yarn strength testing device and yarn strength testing method thereof Download PDFInfo
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- CN115597971B CN115597971B CN202211593630.5A CN202211593630A CN115597971B CN 115597971 B CN115597971 B CN 115597971B CN 202211593630 A CN202211593630 A CN 202211593630A CN 115597971 B CN115597971 B CN 115597971B
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- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The invention discloses an unfolded yarn strength testing device and a yarn strength testing method thereof, and relates to the technical field of yarn detection. Through setting up the test panel that encircles the lopping, survey test panel and slide under actuating mechanism's promotion and expand or slide under actuating mechanism's pulling and contract, use this as the basis, as long as be in the same place the head and the tail both ends of yarn, and the cover is in surveying the concave arc board of board, can utilize the survey test panel extrusion yarn that expands, make the yarn slide to the central point of cambered surface under the cambered surface effect of concave arc board, the automatic adjustment yarn position, meanwhile, can also test yarn intensity through the force transducer in the concave arc board. The efficiency of yarn strength test has been improved. And the pressure applied to the yarn by the test board is controlled between the second preset strength and the first preset strength, so that the back-and-forth stroke of the test board is reduced, and the efficiency of yarn strength test is further improved.
Description
Technical Field
The invention relates to the technical field of yarn detection, in particular to an unfolded yarn strength testing device.
Background
The yarn strength test is the basic test in textile garment testing. The yarn is used as a raw material, and the quality of the yarn directly influences the quality of fabrics and clothing products.
Before testing the yarn strength, two ends of the yarn need to be fixed through a fixing component, and referring to the yarn strength detection device disclosed in Chinese publication No. CN210604169U, the fixing component comprises a locking block vertically penetrating through a substrate and a nut arranged on the lower surface of the substrate and matched with the locking block, the locking block is in a horn shape capable of being opened and closed, when the yarn strength detection device is used, the yarn firstly penetrates through a hole of the locking block, and then the nut is screwed, so that the locking block is closed to compress the yarn. After the locking block of loudspeaker form used many times, fatigue resistance can be more and more poor, and the degree of opening and shutting of loudspeaker form locking block can diminish, leads to the hole of locking block to diminish, and then leads to the yarn can more and more difficult hole that passes the locking block, needs debug the position at yarn end repeatedly (after the hole of locking block is aimed at to the yarn end, tries the perforation again, and the yarn end is soft again, increases the perforation degree of difficulty) to influence the efficiency of yarn strength test.
Refer to chinese publication No. CN110987615B and disclose a yarn tension detection mechanism, its fixed subassembly comprises hemisphere fixture block and cylinder type fixture block, and during the use, pulling cylinder type fixture block upwards, beat the knot with the yarn both ends thereupon (compare the above-mentioned patent scheme, the antiskid is moved well, changes to satisfy international standard and can not exceed the regulation of 2mm to sliding), put the yarn between cylinder type fixture block and hemisphere fixture block, loosen cylinder type fixture block afterwards and fix the yarn both ends. The two ends of the yarn are fixed through an upper surface and a lower surface, the centers of the two ends of the yarn are difficult to be positioned on the same central axis, and the two ends of the yarn can be kept on the same horizontal plane when viewed from the front.
At present, there is still room for improvement in the fixing component used in the yarn strength testing device, and further improvement is needed to improve the efficiency of yarn strength testing.
Disclosure of Invention
One purpose of the invention is to solve the problem that the fixing component adopted by the yarn strength testing device in the prior art needs to repeatedly debug the position of the yarn end before clamping the yarn, thereby influencing the yarn strength testing efficiency.
The invention also aims to provide a yarn strength testing method.
In order to achieve one of the purposes, the invention adopts the following technical scheme: the utility model provides an expansion yarn intensity testing arrangement, includes left basal disc, right basal disc and slides and locate left basal disc with survey test panel between the right basal disc.
Expansion yarn intensity testing arrangement still includes actuating mechanism, actuating mechanism has the threaded rod, the threaded rod left side base disc with right side base disc is coaxial, and is a plurality of survey test panel ring winds the threaded rod, it has concave arc board to survey test panel outer wall slip embedding, concave arc board with survey and set up force transducer between the test panel, force transducer with actuating mechanism is with wired or wireless mode communication connection director.
The inner wall of the test board is connected with an inclined guide block, the threaded rod is in threaded connection with a conical sliding seat, and the conical surface of the conical sliding seat is slidably embedded in the inclined surface of the inclined guide block.
In the technical scheme, when the unfolded yarn strength testing device is used for measuring the yarn strength, the head end and the tail end of the yarn are connected together to be knotted, so that the yarn is in a ring shape, and then the ring-shaped yarn is sleeved in the concave arc plate of the testing plate.
And then the controller controls the driving mechanism to drive the threaded rod to rotate forwards, so that the conical sliding seat is driven to move leftwards to extrude the inclined guide block on the inner side of the test board, the test board is forced to slide outwards, pressure is applied to the ring-shaped yarns, the ring-shaped yarns are tightly tightened after being pressurized by the test board, and the yarns slide into the center of the cambered surface of the concave arc plate.
When the yarn is tightened, the concave arc plate is subjected to resistance of the yarn, the concave arc plate extrudes the force sensor, the force sensor detects the strength of the pressure applied to the yarn, the force sensor detects that the strength of the pressure applied to the yarn is transmitted to the controller, when the strength of the pressure applied to the yarn reaches a first preset strength, the controller controls the driving mechanism to drive the threaded rod to rotate reversely, the conical sliding seat is driven to move rightwards to pull the inclined guide block on the inner side of the test plate, the test plate is driven to slide inwards, the force applied to the yarn is reduced, when the force applied to the yarn is reduced to a second preset strength, the controller controls the driving mechanism to drive the threaded rod to rotate forwards, the strength applied to the yarn reaches the first preset strength, the operation is repeated, when the controller detects that the first preset strength reaches preset times, the driving mechanism drives the threaded rod to rotate backwards, the conical sliding seat and the test plate are driven to be stopped after being reset, and the yarn strength test is completed.
Further, in the embodiment of the present invention, the left base plate is provided with a left sliding groove, the right base plate is provided with a right sliding groove, the left end of the test board is connected to a left connecting block, the left connecting block is slidably connected to the left sliding groove, the right end of the test board is connected to a right connecting block, and the right connecting block is slidably connected to the right sliding groove.
Further, in the embodiment of the present invention, a guide wheel is disposed on a tapered surface of the tapered slide seat, and the guide wheel abuts against an inclined surface of the inclined guide block.
Furthermore, in the embodiment of the present invention, the left sliding groove is provided with a magnet, the left connecting block is connected with a magnetic sheet, and the magnetic poles of the abutting surfaces of the magnet and the magnetic sheet are the same.
When the conical sliding seat moves left to extrude the test board, the test board is subjected to a force from the upper left direction, and meanwhile, the homopolar poles of the magnet of the left sliding groove of the test board and the magnetic sheet on the left side of the test board repel each other to resist the pressure on the left side of the test board, so that the friction between the left connecting block of the test board and the left base plate is reduced, and the possibility of generating a gap between the left connecting block and the left base plate is reduced. Otherwise, the test board will move left under the cone-shaped sliding seat, and there are many test boards, when one moves left, the yarn will be pulled laterally, so that the measurement of the yarn strength will be wrong.
Further, in the embodiment of the present invention, a conductive plate is installed on the right chute, an information lamp is disposed on the outer wall of the right base plate, the conductive plate is electrically connected to the information lamp, the right connecting block is connected to a power receiving plate, the power receiving plate is in contact with the conductive plate, and the power receiving plate is electrically connected to a power supply block.
When measuring yarn intensity, the electric piece power supply that obtains that survey test panel right side through the power pack for the electric piece is with current transmission to the conducting strip of right basal disc, and then makes the information lamp of right basal disc send light signal under the current effect of conducting strip.
When the left connecting block of the test board is abraded with the left base plate, the test board is driven by the conical sliding seat to move left, the electric sheet is far away from the conducting sheet, the information lamp is extinguished, the staff is prompted, and the yarn strength is measured wrongly.
Further, in the embodiment of the invention, the left end of the threaded rod is rotatably connected to the left base plate, and the right end of the threaded rod is rotatably connected to the right base plate.
Further, in the embodiment of the present invention, the unfolded yarn strength testing device further includes a base, a power motor is disposed in the base, a power end of the power motor is connected to a rotating shaft, and the rotating shaft is connected to the left base plate.
When the unfolding type yarn strength testing device needs to be overhauled, the left base plate, the testing plate and the right base plate are controlled to be downward through the power motor, so that more overhauling angles are provided for workers.
The invention has the beneficial effects that:
the invention is provided with a test board which is looped, and a conical slide seat of a driving mechanism is adopted to push the test board to expand in a sliding way or pull the test board to retract in a sliding way, on the basis of the arrangement, as long as the head end and the tail end of the yarn are connected together and sleeved in a concave arc board of the test board, the yarn can be extruded by the expanded test board, the yarn slides to the central point of the arc surface under the action of the arc surface of the concave arc board, the position of the yarn is automatically adjusted, then the yarn is continuously extruded by the expanded test board, the yarn is transmitted to a force sensor in the concave arc board under the action of pressure reaction force, and the strength of the yarn is tested by the force sensor. The yarn position and the yarn strength can be adjusted and tested through the unfolded testing board only by sleeving the looped yarns on the concave cambered surface of the testing board, so that the efficiency of testing the yarn strength is improved.
And the pressure applied to the yarn by the test board is controlled between the second preset strength and the first preset strength, so that the reciprocating stroke of the test board is reduced during testing, and the efficiency of testing the strength of the yarn is further improved.
In order to achieve the second purpose, the invention adopts the following technical scheme: a yarn strength testing method applied to the spread yarn strength testing apparatus described in one of the above objects, the yarn strength testing method comprising the steps of:
when the yarn strength is measured by adopting the unfolded yarn strength testing device, the head end and the tail end of the yarn are connected together to be knotted, so that the yarn is in a ring shape, and then the ring-shaped yarn is sleeved in the concave arc plate of the testing plate.
And then the controller controls the driving mechanism to drive the threaded rod to rotate forwards so as to drive the conical sliding seat to move leftwards to extrude the inclined guide block on the inner side of the test board, so that the test board slides outwards, pressure is applied to the ring-shaped yarns, the ring-shaped yarns are tightened after being pressurized by the test board, and the yarns slide into the center of the cambered surface of the concave arc plate.
When the yarn is tightened, the concave arc plate is subjected to resistance of the yarn, the concave arc plate extrusion force sensor detects the strength of the pressure applied to the yarn through the force sensor, the force sensor detects the strength of the pressure applied to the yarn and transmits the strength of the pressure applied to the yarn to the controller, when the strength of the pressure applied to the yarn reaches a first preset strength, the controller controls the driving mechanism to drive the threaded rod to rotate reversely, the conical sliding seat is driven to move rightwards to pull the inclined guide block on the inner side of the testing plate, the testing plate is driven to slide inwards, the force applied to the yarn is reduced, when the force applied to the yarn is reduced to a second preset strength, the controller controls the driving mechanism to drive the threaded rod to rotate forwards, the strength of the pressure applied to the yarn reaches the first preset strength, the operation is repeated, and when the controller detects that the first preset strength reaches preset times, the driving mechanism drives the threaded rod to rotate backwards, the conical sliding seat and the testing plate to reset and then stop, and the yarn strength testing is completed.
The first point to be explained is: the first predetermined strength and the second predetermined strength are set according to the type, thickness, linear density and the like of the yarn, such as the strength standard of cotton knitting yarn, the English count is 10(s), the linear density is 58.31 (tex), and the breaking strength of the combed single yarn is not less than 12.4 (CN/tex). Therefore, the first predetermined strength can be set to 12.4 (CN/tex), and when the yarn is broken without reaching the first predetermined strength, the yarn can be judged to be unqualified. The second predetermined strength can be set to be 0 to 0.1 (CN/tex), so that the pressure applied to the yarn by the test board can be controlled back and forth between the second predetermined strength and the first predetermined strength, thereby being beneficial to reducing the back and forth stroke of the test board during testing and improving the efficiency of testing the strength of the yarn.
The second point to be explained is: the strength of the same yarn is tested for many times because the strength of the yarn is affected by factors such as poor joint, slub, weak twist and the like during the production of the yarn, which is shown in the position where the yarn is easy to break. At present, in order to test the yarn strength, the yarn is subjected to one-time stretch breaking as a strength test, and only the position where the yarn is most easily broken can be found in the mode, and other positions of the yarn, which are only next to the position where the yarn is most easily broken, are difficult to find. Through carrying out strength test on the same yarn for many times, a plurality of easy-to-break positions can be found out. In the prior art, such a case exists that the same yarn is subjected to multiple strength tests, for example, zeitzerland wegian company switzerland tests the same yarn sample more than ten thousand times by using a tensojet, and finally, the position of the yarn 15 where the yarn is easy to break is found out.
The third point is: the priority of the preset times in the controller is higher than the first preset intensity and the second preset intensity, so that after the first preset intensity reaches the preset times, the driving mechanism and the test board can be controlled to reset through the controller, and finally the driving mechanism is stopped.
The invention is provided with a test board which is looped, and a conical slide seat of a driving mechanism is adopted to push the test board to expand in a sliding way or pull the test board to retract in a sliding way, on the basis of the arrangement, as long as the head end and the tail end of the yarn are connected together and sleeved in a concave arc board of the test board, the yarn can be extruded by the expanded test board, the yarn slides to the central point of the arc surface under the action of the arc surface of the concave arc board, the position of the yarn is automatically adjusted, then the yarn is continuously extruded by the expanded test board, the yarn is transmitted to a force sensor in the concave arc board under the action of pressure reaction force, and the strength of the yarn is tested by the force sensor. The yarn position and the yarn strength can be adjusted and tested through the unfolded testing board only by sleeving the looped yarns on the concave cambered surface of the testing board, so that the efficiency of testing the yarn strength is improved.
And the pressure applied to the yarn by the test board is controlled between the second preset strength and the first preset strength, so that the reciprocating stroke of the test board is reduced during testing, and the efficiency of yarn strength testing is further improved.
Further, in the embodiment of the present invention, in the above step, when the conical sliding seat moves leftward to press the test board, the test board receives a force from an upper left direction, and at the same time, the magnet of the left sliding slot of the test board and the magnetic sheet on the left side of the test board repel each other in the same polarity, so as to resist the leftward pressure of the test board, and reduce the friction between the left connection block of the test board and the left base plate, thereby reducing the possibility of generating a gap between the left connection block and the left base plate. Otherwise, the test boards move left under the drive of the conical sliding seat, and the test boards are multiple, when one test board moves left, the yarn is pulled laterally, and the measurement of the yarn strength is wrong.
Furthermore, in the embodiment of the present invention, in the step, when the yarn strength is measured, the power block supplies power to the electric sheet on the right side of the test board, so that the electric sheet transmits current to the conductive sheet of the right base plate, and the information lamp of the right base plate emits a light signal under the current action of the conductive sheet.
When the left connecting block of the test board and the left base plate are abraded, the test board is driven by the conical sliding seat to move left, the electric sheet is far away from the conducting sheet, the information lamp is turned off, and the worker is prompted that the yarn strength is measured mistakenly.
Drawings
FIG. 1 is a schematic view of an unfolded yarn strength testing device connected to a base according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of an unfolded yarn strength testing device according to an embodiment of the present invention.
Fig. 3 is a partially enlarged view of a portion a of fig. 2.
Fig. 4 is a partial structural schematic diagram of an expanded yarn strength testing device according to an embodiment of the invention.
In the attached drawings
10. A left base plate 11, a left chute 12 and a magnet;
20. the device comprises a right base plate 21, a right chute 22, a conducting strip 23, an information lamp 24 and a power supply block;
30. a test board, 31, a left connecting block, 32, a right connecting block, 33, a concave arc board, 331, a force sensor, 34, an inclined guide block, 35, a power-on chip, 36 and a magnetic chip;
40. the driving mechanism 41, the threaded rod 42, the conical sliding seat 43 and the guide wheel;
50. base 51, power motor 52, pivot.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the invention and are not limiting of the invention, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" 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 be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
For simplicity and illustrative purposes, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. But it is obvious. To one of ordinary skill in the art, the embodiments may be practiced without limitation to these specific details. In some instances, well known yarn strength testing methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. In addition, all embodiments may be used in combination with each other.
The first embodiment is as follows:
it should be noted that the drawings are for illustrative purposes, and the structural shapes, connections, coordination relationships, and positional relationships that can be unambiguously understood in the drawings should be understood as the contents of the description.
An unfolding type yarn strength testing device is shown in fig. 1 and fig. 2, and comprises a left base plate 10, a right base plate 20 and a testing plate 30 arranged between the left base plate 10 and the right base plate 20 in a sliding mode.
As shown in fig. 2, the unfolding type yarn strength testing device further comprises a driving mechanism 40, the driving mechanism 40 has a threaded rod 41, the left base plate 10 and the right base plate 20 are coaxial, the plurality of test plates 30 surround the threaded rod 41, the concave arc plate 33 is slidably embedded in the outer wall of the test plate 30, a force sensor 331 is arranged between the concave arc plate 33 and the test plate 30, and the force sensor 331 and the driving mechanism 40 are in communication connection with a controller in a wired or wireless manner.
The inner wall of the test board 30 is connected with the inclined guide block 34, the threaded rod 41 is in threaded connection with the conical slide seat 42, and the conical surface of the conical slide seat 42 is in sliding fit with the inclined surface of the inclined guide block 34.
The working principle is as follows: when the unfolded yarn strength testing device is used for measuring the yarn strength, the head end and the tail end of the yarn are connected together to be knotted, so that the yarn is in a ring shape, and then the ring-shaped yarn is sleeved in the concave arc plate 33 of the testing plate 30.
And then the controller controls the driving mechanism 40 to drive the threaded rod 41 to rotate forward, so as to drive the conical sliding seat 42 to move left to extrude the inclined guide block 34 on the inner side of the test board 30, so that the test board 30 slides outwards, pressure is applied to the ring-shaped yarn, the ring-shaped yarn is tightly tightened after being pressurized by the test board 30, and the yarn slides into the center of the cambered surface of the concave arc plate 33.
When the yarn is tightened, the concave arc plate 33 is subjected to resistance of the yarn, the concave arc plate 33 extrudes the force sensor 331, the strength of the pressure applied to the yarn is detected by the force sensor 331 and is transmitted to the controller, when the strength of the pressure applied to the yarn reaches a first preset strength, the controller controls the driving mechanism 40 to drive the threaded rod 41 to rotate reversely, the conical sliding seat 42 is driven to move rightwards to pull the inclined guide block 34 on the inner side of the testing plate 30, the testing plate 30 is driven to slide inwards, the force applied to the yarn is reduced, when the force applied to the yarn is reduced to a second preset strength, the controller controls the driving mechanism 40 to drive the threaded rod 41 to rotate forwards, the strength of the yarn reaches the first preset strength, the operation is repeated, and when the controller detects that the first preset strength reaches preset times, the driving mechanism 40 drives the threaded rod 41 to rotate backwards, drives the conical sliding seat 42 and the testing plate 30 to reset, and then stop, and the strength test of the yarn is completed.
The first point to be explained is: the first predetermined strength and the second predetermined strength are set according to the type, thickness, linear density and the like of the yarn, such as the strength standard of cotton knitting yarn, the English count is 10(s), the linear density is 58.31 (tex), and the breaking strength of the combed single yarn is not less than 12.4 (CN/tex). Therefore, the first predetermined strength can be set to 12.4 (CN/tex), and when the yarn is broken without reaching the first predetermined strength, the yarn can be judged to be unqualified. The second predetermined strength can be set to 0 to 0.1 (CN/tex), so that the pressure applied by the test board 30 to the yarn can be controlled back and forth between the second predetermined strength and the first predetermined strength, which is beneficial to reducing the back and forth stroke of the test board 30 during testing and improving the efficiency of the yarn strength testing.
The second point to be explained is: the strength of the same yarn is tested for multiple times because factors such as poor joint, thick knot, weak twist and the like influence the strength of the yarn when the yarn is produced, and the factors are shown in the position where the yarn is easy to break. At present, in order to test the yarn strength, the yarn is subjected to one-time stretch breaking as a strength test, and only the position where the yarn is most easily broken can be found in the mode, and other positions of the yarn, which are only next to the position where the yarn is most easily broken, are difficult to find. Through carrying out strength test on the same yarn for many times, a plurality of easy-to-break positions can be found out. In the prior art, such a case exists that the same yarn is subjected to multiple strength tests, for example, zeitzerland wegian company switzerland tests the same yarn sample more than ten thousand times by using a tensojet, and finally, the position of the yarn 15 where the yarn is easy to break is found out.
The third point is to be noted: the priority of the preset times in the controller is higher than the first predetermined intensity and the second predetermined intensity, so that after the first predetermined intensity reaches the preset times, the controller can control the driving mechanism 40 and the testing board 30 to reset, and finally stop the driving mechanism 40.
The invention is provided with a test board 30 which is looped, and adopts a conical sliding seat 42 of a driving mechanism 40 to push the test board 30 to expand in a sliding way or pull the test board 30 to retract in a sliding way, on the basis of the structure, as long as the head end and the tail end of the yarn are connected together and sleeved in a concave arc plate 33 of the test board 30, the yarn can be extruded by the expanded test board 30, the yarn slides to the central point of the arc surface under the action of the arc surface of the concave arc plate 33, the position of the yarn is automatically adjusted, then the yarn is continuously extruded by the expanded test board 30, the yarn is transmitted to a force sensor 331 in the concave arc plate 33 under the reaction force of the pressure, and the strength of the yarn is tested by the force sensor 331. The yarn position and the yarn strength can be adjusted and tested through the unfolded test board 30 only by sleeving the looped yarns on the concave cambered surface of the test board 30, so that the efficiency of yarn strength test is improved.
In addition, the pressure applied to the yarn by the test board 30 is controlled between the second preset strength and the first preset strength, which is beneficial to reducing the back-and-forth stroke of the test board 30 during testing and further improving the efficiency of yarn strength testing.
As shown in FIG. 2, the left base plate 10 has a left sliding slot 11, the right base plate 20 has a right sliding slot 21, the left end of the testing board 30 is connected to a left connecting block 31, the left connecting block 31 is slidably connected to the left sliding slot 11, the right end of the testing board 30 is connected to a right connecting block 32, and the right connecting block 32 is slidably connected to the right sliding slot 21.
As shown in fig. 3, the tapered surface of the tapered slide 42 is provided with a guide wheel 43, and the guide wheel 43 abuts against the inclined surface of the inclined guide block 34. Reducing the friction of the tapered slide 42 with the ramp guide block 34.
As shown in FIG. 2, the magnet 12 is mounted on the left chute 11, the left connecting block 31 is connected with the magnetic sheet 36, and the magnetic poles of the abutting surfaces of the magnet 12 and the magnetic sheet 36 are the same.
When the tapered slide 42 moves leftward to press the test board 30, the test board 30 is subjected to a force from the upper left direction, and at the same time, the magnet 12 of the left slide slot 11 of the test board 30 and the magnetic sheet 36 at the left side of the test board 30 repel each other in the same polarity to resist the leftward pressure of the test board 30, so as to reduce the friction between the left block 31 of the test board 30 and the left base plate 10, thereby reducing the possibility of generating a gap between the left block 31 and the left base plate 10. Otherwise, the test board 30 moves left under the cone-shaped sliding seat 42, and the test boards 30 are multiple, and when one moves left, the yarn will be pulled laterally, so that the measurement of the yarn strength will be wrong.
As shown in fig. 4, a conducting strip 22 is installed on the right chute 21, an information lamp 23 is arranged on the outer wall of the right base plate 20, the conducting strip 22 is electrically connected with the information lamp 23, a right connecting block 32 is connected with a conducting strip 35, the conducting strip 35 is in contact with the conducting strip 22, and the conducting strip 35 is electrically connected with a power supply block 24.
When the yarn strength is measured, the power supply block 24 supplies power to the electricity obtaining sheet 35 on the right side of the test board 30, so that the electricity obtaining sheet 35 transmits current to the conducting sheet 22 of the right base plate 20, and the information lamp 23 of the right base plate 20 sends out a light signal under the current action of the conducting sheet 22.
When the left connecting block 31 of the test board 30 is worn and abraded with the left base plate 10, so that the test board 30 moves left under the driving of the conical slide 42, the electric sheet 35 is far away from the electric sheet 22, and the information lamp 23 is turned off to prompt a worker that the measurement of the yarn strength is wrong.
As shown in fig. 2, the left end of the threaded rod 41 is rotatably connected to the left base plate 10, and the right end of the threaded rod 41 is rotatably connected to the right base plate 20.
As shown in FIG. 1, the unfolding type yarn strength testing device further comprises a base 50, wherein a power motor 51 is arranged in the base 50, a power end of the power motor 51 is connected with a rotating shaft 52, and the rotating shaft 52 is connected with the left base plate 10.
When the unfolded yarn strength testing device needs to be overhauled, the power motor 51 controls the left basal disc 10, the testing plate 30 and the right basal disc 20 to move downwards, so that more overhauling angles are provided for workers.
Example two:
a yarn strength testing method, which is applied to the unfolding type yarn strength testing device in the first embodiment, includes the following steps:
when the unfolded yarn strength testing device is used for measuring the yarn strength, the head end and the tail end of the yarn are connected together to be knotted, so that the yarn is in a ring shape, and then the ring-shaped yarn is sleeved in the concave arc plate 33 of the testing plate 30.
And then the controller controls the driving mechanism 40 to drive the threaded rod 41 to rotate forward, so as to drive the conical sliding seat 42 to move left to extrude the inclined guide block 34 on the inner side of the test board 30, so that the test board 30 slides outwards, pressure is applied to the ring-shaped yarn, the ring-shaped yarn is tightly tightened after being pressurized by the test board 30, and the yarn slides into the center of the cambered surface of the concave arc plate 33.
When the yarn is tightened, the concave arc plate 33 is subjected to resistance of the yarn, the concave arc plate 33 extrudes the force sensor 331, the strength of the pressure applied to the yarn is detected by the force sensor 331 and is transmitted to the controller, when the strength of the pressure applied to the yarn reaches a first preset strength, the controller controls the driving mechanism 40 to drive the threaded rod 41 to rotate reversely, the conical sliding seat 42 is driven to move rightwards to pull the inclined guide block 34 on the inner side of the testing plate 30, the testing plate 30 is driven to slide inwards, the force applied to the yarn is reduced, when the force applied to the yarn is reduced to a second preset strength, the controller controls the driving mechanism 40 to drive the threaded rod 41 to rotate forwards, the strength of the yarn reaches the first preset strength, the operation is repeated, and when the controller detects that the first preset strength reaches preset times, the driving mechanism 40 drives the threaded rod 41 to rotate backwards, drives the conical sliding seat 42 and the testing plate 30 to reset, and then stop, and the strength test of the yarn is completed.
The first point to be explained is: the first predetermined strength and the second predetermined strength are set according to the type, thickness, linear density and the like of the yarn, such as the strength standard of cotton knitting yarn, the English count is 10(s), the linear density is 58.31 (tex), and the breaking strength of the combed single yarn is not less than 12.4 (CN/tex). Therefore, the first predetermined strength can be set to 12.4 (CN/tex), and when the yarn is broken without reaching the first predetermined strength, the yarn can be judged to be unqualified. The second predetermined strength is set to be 0 to 0.1 (CN/tex), so that the pressure applied by the test board 30 to the yarn can be controlled back and forth between the second predetermined strength and the first predetermined strength, which is beneficial to reducing the back and forth stroke of the test board 30 during testing and improving the efficiency of yarn strength testing.
The second point to be explained is: the strength of the same yarn is tested for many times because the strength of the yarn is affected by factors such as poor joint, slub, weak twist and the like during the production of the yarn, which is shown in the position where the yarn is easy to break. At present, in order to test the yarn strength, the yarn is subjected to one-time stretch breaking as a strength test, and only the position where the yarn is most easily broken can be found in the mode, and other positions of the yarn, which are only next to the position where the yarn is most easily broken, are difficult to find. Through carrying out strength test on the same yarn for many times, a plurality of easy-to-break positions can be found out. In the prior art, such a case exists that the same yarn is subjected to multiple strength tests, for example, zeitzerland wegian company, switzerland tests the same yarn sample more than ten thousand times by using tensojet, and finally, the position where the yarn 15 is easy to break is found out.
The third point is to be noted: the priority of the preset times in the controller is higher than the first preset intensity and the second preset intensity, so that after the first preset intensity reaches the preset times, the controller can control the driving mechanism 40 and the test board 30 to reset, and finally stop the driving mechanism 40.
The invention sets a test board 30 which is looped around, and adopts a conical slide seat 42 of a driving mechanism 40 to push the test board 30 to expand in a sliding way or pull the test board 30 to contract in a sliding way, on the basis of the structure, as long as the head end and the tail end of the yarn are connected together and sleeved in a concave arc plate 33 of the test board 30, the yarn can be extruded by the expanded test board 30, the yarn slides to the central point of the arc surface under the action of the arc surface of the concave arc plate 33, the position of the yarn is automatically adjusted, then the yarn is continuously extruded by the expanded test board 30, the yarn is transmitted to a force sensor 331 in the concave arc plate 33 under the reaction force of the pressure, and the strength of the yarn is tested by the force sensor 331. The yarn position and the yarn strength can be adjusted and tested through the unfolded test board 30 only by sleeving the looped yarns on the concave cambered surface of the test board 30, so that the efficiency of yarn strength test is improved.
In addition, the pressure applied to the yarn by the test board 30 is controlled between the second preset strength and the first preset strength, which is beneficial to reducing the back-and-forth stroke of the test board 30 during testing and further improving the efficiency of yarn strength testing.
In the above steps, when the tapered slide 42 moves to the left to press the test board 30, the test board 30 is subjected to a force from the upper left direction, and at the same time, the magnet 12 of the left chute 11 of the test board 30 and the magnetic sheet 36 at the left side of the test board 30 repel each other in the same polarity, so as to resist the leftward pressure of the test board 30, and reduce the friction between the left block 31 of the test board 30 and the left substrate 10, thereby reducing the possibility of a gap between the left block 31 and the left substrate 10. Otherwise, the test board 30 moves left under the cone-shaped sliding seat 42, and the test boards 30 are multiple, and when one moves left, the yarn will be pulled laterally, so that the measurement of the yarn strength will be wrong.
In the above step, when the yarn strength is measured, the power block 24 supplies power to the electricity-obtaining sheet 35 on the right side of the test board 30, so that the electricity-obtaining sheet 35 transmits current to the conducting sheet 22 of the right base plate 20, and the information lamp 23 of the right base plate 20 emits a light signal under the current action of the conducting sheet 22.
When the left connecting block 31 of the testing board 30 is worn away from the left base plate 10, so that the testing board 30 moves left under the driving of the conical slide 42, the electric sheet 35 is far away from the conducting sheet 22, so that the information lamp 23 is turned off to prompt a worker that the measurement of the yarn strength is wrong.
Although the illustrative embodiments of the present invention have been described in order to enable those skilled in the art to understand the present invention, the present invention is not limited to the scope of the embodiments, and it is to be understood that all changes that can be made by one skilled in the art to the inventive concept can be made without departing from the spirit and scope of the invention as defined and defined by the appended claims.
Claims (7)
1. The unfolding type yarn strength testing device is characterized by comprising a left base plate, a right base plate and a testing plate arranged between the left base plate and the right base plate in a sliding mode;
the unfolding type yarn strength testing device further comprises a driving mechanism, the driving mechanism is provided with a threaded rod, the left base plate and the right base plate are coaxial, the threaded rod is surrounded by the plurality of testing plates, concave arc plates are embedded into the outer walls of the testing plates in a sliding mode, force sensors are arranged between the concave arc plates and the testing plates, and the force sensors and the driving mechanism are in communication connection with a controller in a wired or wireless mode;
the inner wall of the test board is connected with an inclined guide block, the threaded rod is in threaded connection with a conical sliding seat, and the conical surface of the conical sliding seat is slidably embedded in the inclined surface of the inclined guide block;
the left end of the threaded rod is rotatably connected to the left base plate, and the right end of the threaded rod is rotatably connected to the right base plate;
the left base plate is provided with a left sliding groove, the right base plate is provided with a right sliding groove, the left end of the test board is connected with a left connecting block, the left connecting block is in sliding connection with the left sliding groove, the right end of the test board is connected with a right connecting block, and the right connecting block is in sliding connection with the right sliding groove;
the magnetic sheet is connected with the left connecting block, and the magnetic poles of the magnetic sheet binding faces of the magnet and the magnetic sheet are the same.
2. The unfolded yarn strength testing device as claimed in claim 1, wherein the tapered surface of the tapered sliding seat is provided with a guide wheel, and the guide wheel abuts against the inclined surface of the inclined guide block.
3. The unfolding type yarn strength testing device as claimed in claim 1, wherein a conducting strip is mounted on the right chute, an information lamp is arranged on the outer wall of the right base plate, the conducting strip is electrically connected with the information lamp, the right connecting block is connected with a power strip, the power strip is in contact with the conducting strip, and the power strip is electrically connected with a power supply block.
4. The unfolding type yarn strength testing device as claimed in claim 1, further comprising a base, wherein a power motor is disposed in the base, a power end of the power motor is connected to a rotating shaft, and the rotating shaft is connected to the left base plate.
5. A yarn strength testing method applied to the spread yarn strength testing apparatus of any one of claims 1 to 4, comprising the steps of:
when the yarn strength is measured by adopting the unfolded yarn strength testing device, the head end and the tail end of the yarn are connected together to be knotted, so that the yarn is in a ring shape, and then the ring-shaped yarn is sleeved in the concave arc plate of the testing plate;
then, the controller controls the driving mechanism to drive the threaded rod to rotate forwards, the conical sliding seat is driven to move leftwards to extrude an inclined guide block on the inner side of the test board, the test board is enabled to slide outwards, pressure is applied to the ring-shaped yarns, the ring-shaped yarns are tightly tightened after being pressurized by the test board, and the yarns slide into the center of the cambered surface of the concave arc plate;
when the yarn is tightened, the concave arc plate is subjected to resistance of the yarn, the concave arc plate extrudes the force sensor, the force sensor detects the strength of the pressure applied to the yarn, the force sensor detects that the strength of the pressure applied to the yarn is transmitted to the controller, when the strength of the pressure applied to the yarn reaches a first preset strength, the controller controls the driving mechanism to drive the threaded rod to rotate reversely, the conical sliding seat is driven to move rightwards to pull the inclined guide block on the inner side of the test plate, the test plate is driven to slide inwards, the force applied to the yarn is reduced, when the force applied to the yarn is reduced to a second preset strength, the controller controls the driving mechanism to drive the threaded rod to rotate forwards, the strength applied to the yarn reaches the first preset strength, the operation is repeated, when the controller detects that the first preset strength reaches preset times, the driving mechanism drives the threaded rod to rotate backwards, the conical sliding seat and the test plate are driven to be stopped after being reset, and the yarn strength test is completed.
6. The method for testing strength of yarn according to claim 5, wherein in the above step, when the tapered sliding seat moves left to press the testing board, the testing board is subjected to a force from the upper left direction, and simultaneously, the magnet of the left chute of the testing board and the magnetic sheet on the left side of the testing board repel each other in the same polarity, so as to resist the leftward pressure of the testing board, and reduce the friction between the left connecting block of the testing board and the left base disc, thereby reducing the possibility of a gap between the left connecting block and the left base disc.
7. The yarn strength testing method according to claim 6, wherein in the above steps, when the yarn strength is measured, the power block supplies power to the electric sheet on the right side of the testing board, so that the electric sheet transmits current to the electric conducting sheet of the right base plate, and further the information lamp of the right base plate emits a light signal under the current action of the electric conducting sheet;
when the left connecting block of the test board is abraded with the left base plate, the test board is driven by the conical sliding seat to move left, the electric sheet is far away from the conducting sheet, the information lamp is extinguished, the staff is prompted, and the yarn strength is measured wrongly.
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| CN115597971A (en) | 2023-01-13 |
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