A fully automatic twist tester

Abstract

The present invention is applicable to the field of textile detection and provides a fully automatic twist tester. Inside the machine frame, a base plate, a tripod and a test bench are fixedly arranged. The base plate, the tripod and the test bench are integrally formed. At the top of the base plate, a yarn unwinding assembly and a clamping assembly are arranged, and a tension adjusting mechanism is arranged between the yarn unwinding assembly and the clamping assembly; at the top of the test bench, a yarn untwisting assembly is arranged, and at the top of the tripod, an untwisting blocking mechanism is arranged. When the present invention is in use, the yarn to be processed is separated into two twist strips from the feeding roller, and the ends of the two twist strips are fixed to the expansion blocks. At the same time, the servo motor drives the driven turntable to rotate through the driving wheel disc and the grid belt, and the rotating wheel will rotate synchronously with the driven turntable. Then, the two expansion blocks on the side wall of the rotating wheel start the untwisting operation. The rotation speed ratio of the driving wheel disc to the driven turntable is 1:2. Therefore, the number of turns of the driving wheel disc divided by 2 is the number of twists of the untwisting.

Description

Technical Field

[0001] The present invention belongs to the field of textile detection, and particularly relates to a fully automatic twist tester. Background Art

[0002] With the development of industrial technology, modern textile detection technology has become increasingly perfect. The twist of yarn is one of the important indicators to measure its quality and performance. Traditional twist testing methods are mostly manual operations, which have problems such as low testing efficiency, low accuracy, and complex operations. At the same time, although some existing automated testing instruments have improved the testing efficiency to a certain extent, they still have disadvantages such as unstable testing accuracy, complex equipment, and high maintenance costs. Therefore, it is of great significance to develop a high-efficiency, accurate, and fully automated yarn twist tester;

[0003] A yarn twist testing device disclosed in Patent CN207780022U. This patent is provided with a roller clamping assembly and a control device on the fuselage base, and a movable roller tension adjusting assembly is installed on the guide rail; the roller clamping assembly includes two rollers arranged up and down, and the roller tension adjusting assembly includes a driving roller and a driven roller. The two rollers rotate synchronously and in opposite directions, and the surface of the rollers is made of rubber material; the control device includes a roller clamping control device, a roller tension adjusting control device, and a yarn length control device. This patent uses different roller assemblies to clamp and adjust the tension of the yarn respectively, replacing the traditional chuck-type clamping parts and weight-type tension adjusting parts. The roller clamping assembly ensures that the yarn can be firmly clamped, and the roller tension adjusting assembly realizes the automatic control of the yarn tension, thus realizing the automated testing of the yarn twist while improving the testing accuracy;

[0004] This device still has defects when in use. Firstly, the twist counting method of this device is relatively complex, which is prone to counting errors. Secondly, the tension adjustment of this device is relatively rigid. If the force of the yarn is not well controlled, the yarn will break, affecting the detection process. Summary of the Invention

[0005] The purpose of the present invention is to provide a fully automatic twist tester in view of the deficiencies of the prior art. When this device is in use, the yarn to be processed is separated from the feeding roller into two twist strips, and the ends of the two twist strips are fixed to the expansion blocks. At the same time, the servo motor drives the driven turntable to rotate through the driving wheel disc and the grid belt. The rotating wheel will rotate synchronously with the driven turntable. Then, the two expansion blocks on the side wall of the rotating wheel start the untwisting operation. The rotation speed ratio of the driving wheel disc to the driven turntable is 1:2. Then, the number of turns of the driving wheel disc divided by 2 is the number of twists of untwisting, so as to solve the problems mentioned in the background art.

[0006] To solve the above problems, the present invention provides the following technical solutions: A fully automatic twist tester, including a machine frame, inside which a base plate, a tripod and a test table are fixedly arranged. The base plate, the tripod and the test table are integrally formed. At the top of the base plate, a yarn unwinding assembly and a clamping assembly are arranged. A tension adjusting mechanism is arranged between the yarn unwinding assembly and the clamping assembly. On one side of the machine frame, an observation window is arranged, and tempered glass is arranged inside the observation window. At the top port of the machine frame, a cover plate is arranged; at the top of the test table, a yarn untwisting assembly is arranged, and at the top of the tripod, an untwisting blocking mechanism is arranged; the yarn untwisting assembly includes a shaft seat at the top of the test table. A runner is rotatably arranged on the side of the shaft seat facing the base plate. A horizontal shaft inserted into the shaft seat is arranged at the center of the runner. The outer end of the horizontal shaft is connected to a twist counting assembly. Expansion grooves are arranged on the side wall of the runner. Two expansion blocks are slidably installed inside the expansion grooves. Yarn is drawn out from the yarn unwinding assembly. The yarn is divided into two branch lines. The branch lines are respectively connected to the expansion blocks. A wire head fixing assembly is arranged on the expansion blocks; the twist counting assembly includes a driven turntable at the inner end of the horizontal shaft. A servo motor is fixedly installed at the top of the test table. A driving wheel disc is installed at the output end of the servo motor. The driving wheel disc and the driven turntable are connected by a lattice belt. The diameter ratio of the driving wheel disc to the driven turntable is one to two; the untwisting blocking mechanism includes a guide rail at the top of the tripod. A slider is arranged on the guide rail. A blocking cylinder is arranged at the top of the slider. A blocking rod is arranged at the top of the blocking cylinder. An electric push rod is arranged on the side wall of the tripod. A pressure sensor is arranged at the end of the retractable rod of the electric push rod. The pressure sensor is fixedly connected to the side wall of the slider through a connecting frame.

[0007] Further, the wire head fixing assembly includes two sliding channels inside the expansion block. A pressing frame is slidably installed inside the sliding channels. The end of the branch line of the yarn is inserted into the gap between the right end of the pressing frame and the right side wall of the expansion block. A nut block is arranged at the left end of the pressing frame. An internal hexagonal bolt is rotatably arranged inside the nut block. The end of the internal hexagonal bolt abuts against the left side wall of the expansion block. A tensioning wire groove matching the pressing frame is arranged on the side wall of the runner.

[0008] Further, the yarn unwinding assembly includes a yarn unwinding frame at the top of the base plate. A feeding roller is rotatably arranged in the middle of the yarn unwinding frame. Yarn is drawn out from the outside of the feeding roller. A locking valve is arranged on the side wall of the yarn unwinding frame.

[0009] Further, the clamping assembly includes a roller clamping frame. Two pressing rollers are rotatably arranged in the middle of the roller clamping frame. The two pressing rollers are respectively connected to the output shafts of two tensioning motors.

[0010] Further, the tension adjusting mechanism includes a tension channel in the middle of the base plate. A sliding column is slidably installed in the tension channel. A hanging ring is provided at the top of the sliding column. The yarn passes through the inside of the hanging ring. A counterweight box is provided at the bottom of the sliding column. A lifting cylinder is provided on the side wall of the tripod. A tray is provided at the end of the telescopic rod of the lifting cylinder. The counterweight box lies on the top surface of the tray. A number of counterweight holes in a rectangular array are provided on the counterweight box, and lead bars are installed inside the counterweight holes.

[0011] Further, the servo motor and the pressure sensor are connected to the computer processing module through a data link.

[0012] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0013] First, when the device is in use, the yarn to be processed is taken from the feeding roller and separated into two twist strips. The ends of the two twist strips are fixed to the expansion blocks. At the same time, the servo motor drives the driven turntable to rotate through the driving wheel disc and the grid belt. The rotating wheel will rotate synchronously with the driven turntable. Then, the two expansion blocks on the side wall of the rotating wheel start the untwisting operation. The rotation speed ratio of the driving wheel disc to the driven turntable is 1:2. Therefore, the number of turns of the driving wheel disc divided by 2 is the number of untwisted turns. The electric push rod drives the slider and the blocking cylinder and the blocking rod at its top to move forward. The blocking rod is pushed to the end between the two twist strips, and the resistance value of the pressure sensor is the same as the full twist resistance value. The length of the yarn that has been untwisted in the front divided by the number of untwisted turns can obtain the number of turns per unit length, so as to calculate the twist of the yarn. The staff can view the untwisting situation through the observation window, and directly observe the occurrence of abnormal conditions.

[0014] Second, after the tensioning motor releases the load of the pressing roller, the lifting cylinder drives the tray to drop, and then the counterweight box and the hanging ring at its top drop. Then, the tension of the yarn can be applied by the gravity of the counterweight box, and the tension of the yarn will not be rigid, so there is no risk of the yarn breaking. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the frame of the present invention.

[0016] Figure 2 It is a schematic sectional view of the present invention.

[0017] Figure 3 It is a schematic diagram of the second perspective of the sectional view of the present invention.

[0018] Figure 4 It is a schematic diagram of the counterweight box of the present invention.

[0019] Figure 5 It is a schematic diagram of the rotating wheel of the present invention.

[0020] Figure 6 Schematic diagram of the tensioning wire groove of the present invention.

[0021] Figure 7 Schematic diagram of the second perspective of the runner of the present invention.

[0022] Figure 8 Schematic diagram of the expansion groove of the present invention.

[0023] Figure 9 Schematic diagram of the expansion block of the present invention.

[0024] Figure 10 Schematic diagram of the electric push rod of the present invention.

[0025] Figure 11 Schematic diagram of the blocking cylinder of the present invention

[0026] Explanation of reference numerals:

[0027] Machine frame 1, observation window 101, base plate 2, tripod 201, test bench 202, counterweight box 3, lifting cylinder 301, tray 302, shaft seat 4, runner 401, lattice belt 402, servo motor 403, driving wheel disc 404, driven turntable 405, expansion groove 406, tensioning wire groove 407, return spring 408, feeding rod 5, locking valve 501, yarn 6, pressing roller 7, tensioning motor 701, hanging ring 8, sliding column 801, expansion block 9, pressing frame 901, hexagon socket head bolt 902, electric push rod 10, pressure sensor 1001, guide rail 1002, blocking cylinder 1003, blocking rod 1004. Detailed implementation manners

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0029] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appearing in various places in the specification is not necessarily referring to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0030] The present invention provides a fully automatic twist tester, as Figures 1-11 shown, which includes a machine frame 1. Inside the machine frame 1, a base plate 2, a tripod 201, and a test bench 202 are fixedly arranged. The base plate 2, the tripod 201, and the test bench 202 are integrally formed. At the top of the base plate 2, a yarn unwinding assembly and a clamping assembly are provided. A tension adjusting mechanism is arranged between the yarn unwinding assembly and the clamping assembly. On one side of the machine frame 1, an observation window 101 is provided, and tempered glass is arranged inside the observation window 101. A cover plate is arranged at the top port of the machine frame 1. At the top of the test bench 202, a yarn untwisting assembly is provided. At the top of the tripod 201, an untwisting blocking mechanism is provided. The yarn untwisting assembly includes a shaft seat 4 at the top of the test bench 202. A runner 401 is rotatably arranged on one side of the shaft seat 4 facing the base plate 2. A horizontal shaft inserted inside the shaft seat 4 is arranged at the center of the runner 401. The outer end of the horizontal shaft is connected to a twist counting assembly. Expansion grooves 406 are arranged on the side wall of the runner 401. Two expansion blocks 9 are slidably installed inside the expansion grooves 406. A yarn 6 is drawn out from the yarn unwinding assembly. The yarn 6 is decomposed into two branched lines, and the branched lines are respectively connected to the expansion blocks 9. A wire fixing assembly is arranged on the expansion blocks 9.

[0031] In this embodiment, after the yarn 6 is drawn out from the yarn unwinding assembly and decomposed into two twist strips, after the two twist strips are fixed to the expansion blocks 9, the runner 401 and the expansion blocks 9 on its side wall drive the yarn untwisting operation. After the yarn 6 is completely untwisted, the twist counting assembly will obtain the number of turns of the yarn 6 untwisted, achieving the effect of automatically calculating the twist number of the yarn 6.

[0032] In a further embodiment of the present invention, as Figures 2-3 shown, the twist counting assembly includes a driven turntable 405 at the inner end of the horizontal shaft. A servo motor 403 is fixedly installed at the top of the test bench 202. A driving wheel disc 404 is installed at the output end of the servo motor 403. The driving wheel disc 404 and the driven turntable 405 are connected by a grid belt 402. The diameter ratio of the driving wheel disc 404 to the driven turntable 405 is one to two.

[0033] In this embodiment, the servo motor 403 drives the driven turntable 405 to rotate through the driving wheel disc 404 and the grid belt 402. The runner 401 will rotate synchronously with the driven turntable 405. Then, the two expansion blocks 9 on the side wall of the runner 401 start the untwisting operation. The rotation speed ratio of the driving wheel disc 404 to the driven turntable 405 is one to two. Therefore, the number of turns of the driving wheel disc 404 divided by two is the number of turns of untwisting.

[0034] In a further embodiment of the present invention, as Figures 10-11As shown, the untwisting blocking mechanism includes a guide rail 1002 at the top of a tripod 201. A slider is arranged on the guide rail 1002. A blocking cylinder 1003 is arranged at the top of the slider. A blocking rod 1004 is arranged at the top of the blocking cylinder 1003. An electric push rod 10 is arranged on the side wall of the tripod 201. The end of the retractable rod of the electric push rod 10 is provided with a pressure sensor 1001. The pressure sensor 1001 is fixedly connected to the side wall of the slider through a connecting frame.

[0035] In this embodiment, the electric push rod 10 drives the slider and the blocking cylinder 1003 and the blocking rod 1004 at its top to move forward. The blocking rod 1004 is pushed to the end between two two-twist strips. And the resistance value of the pressure sensor 1001 is the same as the full-twist resistance value. Dividing the length of the yarn that has been untwisted in front by the number of twists that have been untwisted can obtain the number of twists per unit length, so as to calculate the twist of the yarn 6.

[0036] In a further embodiment of the present invention, as Figures 6-9 shown, the thread fixing assembly includes two sliding channels inside the expansion block 9. A pressing frame 901 is slidably installed inside the sliding channels. The forked end of the yarn 6 is inserted into the gap between the right end of the pressing frame 901 and the right side wall of the expansion block 9. A nut block is arranged at the left end of the pressing frame 901. An internal hexagonal bolt 902 is rotatably arranged inside the nut block. The end of the internal hexagonal bolt 902 abuts against the left side wall of the expansion block 9. A tensioning wire groove 407 matching the pressing frame 901 is arranged on the side wall of the runner 401.

[0037] In this embodiment, after two twist strips are inserted into the pressing frame 901, start to rotate the internal hexagonal bolt 902 with a hexagonal wrench. When the end of the internal hexagonal bolt 902 abuts against the left side wall of the expansion block 9, the end of the twist strip will be locked by the right side wall of the expansion block 9 and the right end of the pressing frame 901.

[0038] In a further embodiment of the present invention, as Figures 1-5 shown, the wire releasing assembly includes a wire releasing frame at the top of a base plate 2. A material releasing roller 5 is rotatably arranged in the middle of the wire releasing frame. The yarn 6 is drawn out from the outside of the material releasing roller 5. A locking valve 501 is arranged on the side wall of the wire releasing frame.

[0039] In this embodiment, after the yarn 6 is drawn out from the material releasing roller 5, the locking valve 501 is used to lock the material releasing roller 5 to stop it from rotating.

[0040] In a further embodiment of the present invention, as Figures 1-5 shown, the clamping assembly includes a roller clamping frame. Two pressing rollers 7 are rotatably arranged in the middle of the roller clamping frame. The two pressing rollers 7 are respectively connected to the output shafts of two tensioning motors 701.

[0041] In this embodiment, the end of the yarn 6 is inserted into the gap between the pressing rollers 7. Two tensioning motors 701 drive the two pressing rollers 7 to rotate in opposite directions to let the yarn 6 pass through. During the untwisting process of the yarn 6, the tensioning motor 701 drives the pressing roller 7 to reverse to apply tension to keep the yarn 6 in a taut state. This tension adjustment method is the first tension application method.

[0042] In a further embodiment of the present invention, as Figures 1-4 shown, the tension adjustment mechanism includes a tension channel in the middle of the base plate 2. A sliding column 801 is slidably installed in the tension channel. A hanging ring 8 is provided at the top of the sliding column 801. The yarn 6 passes through the inside of the hanging ring 8. A counterweight box 3 is provided at the bottom of the sliding column 801. A lifting cylinder 301 is provided on the side wall of the tripod 201. The end of the telescopic rod of the lifting cylinder 301 is provided with a tray 302. The counterweight box 3 lies on the top surface of the tray 302. A number of counterweight holes in a rectangular array are provided on the counterweight box 3, and lead bars are installed inside the counterweight holes.

[0043] In this embodiment, after the tensioning motor 701 releases the load on the pressing roller 7, the lifting cylinder 301 drives the tray 302 to drop, and then the counterweight box 3 and the hanging ring 8 at its top drop. Thus, the tension of the yarn 6 can be applied by the gravity of the counterweight box 3. The tension of the yarn 6 will not be rigid, and there will be no risk of the yarn 6 breaking. This tension adjustment mechanism is the second tension application method, and the staff can choose which tension application method according to the detection needs.

[0044] In a further embodiment of the present invention, as Figures 1-11 shown, the servo motor 403 and the pressure sensor 1001 are connected to the computer processing module through a data link.

[0045] In this embodiment, the number of rotations of the servo motor 403 and the force value of the pressure sensor 1001 are transmitted to the computer processing module and recorded in a database, and it is determined whether the number of twists per unit length obtained through multiple cyclic detections varies too much, so as to obtain whether the twist of the yarn 6 is uniform.

[0046] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0047] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the above-mentioned units may have other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0048] The units described above as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0049] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict, make combinations, additions, deletions, or other adjustments to the features in the embodiments of the present invention according to the situation without creative efforts, so as to obtain different technical solutions that essentially do not deviate from the concept of the present invention. These technical solutions also belong to the scope of protection of the present invention.

Claims

1. A fully automatic twist tester, characterized in that: The machine frame (1) comprises a base plate (2), a tripod (201) and a test bench (202) fixedly arranged inside the machine frame (1); the base plate (2), the tripod (201) and the test bench (202) are integrally formed; a wire-releasing assembly and a clamping assembly are arranged at the top of the base plate (2); a tension adjustment mechanism is arranged between the wire-releasing assembly and the clamping assembly; an observation window (101) is arranged at one side of the machine frame (1); tempered glass is arranged inside the observation window (101); and a cover plate is arranged at the top port of the machine frame (1); A yarn untwisting assembly is provided at the top of the test bench (202), and an untwisting blocking mechanism is provided at the top of the tripod (201); The yarn untwisting component comprises an axle seat (4) at the top of the test bench (202); a rotating wheel (401) is rotatably arranged on the axle seat (4) facing one side of the base plate (2); a transverse axis inserted into the interior of the axle seat (4) is arranged at the center of the rotating wheel (401); the outer end of the transverse axis is connected to the twist counting component; an expansion groove (406) is arranged on the side wall of the rotating wheel (401); two expansion blocks (9) are slidably mounted inside the expansion groove (406); a yarn (6) is pulled out from the pay-off component; the yarn (6) is decomposed into two bifurcated lines; the bifurcated lines are respectively connected to the expansion blocks (9); and a thread end fixing component is arranged on the expansion block (9); The twist counting assembly comprises a driven rotating disk (405) at the inner end of the transverse axis, a servo motor (403) is fixedly mounted on the top of the test bench (202), a driving wheel disk (404) is mounted on the output end of the servo motor (403), the driving wheel disk (404) and the driven rotating disk (405) are connected via a lattice belt (402), and the ratio of the diameter of the driving wheel disk (404) to the diameter of the driven rotating disk (405) is one to two; The untwisting blocking mechanism comprises a guide rail (1002) at the top of a tripod (201), a slider being arranged on the guide rail (1002), a blocking cylinder (1003) being arranged at the top of the slider, a blocking rod (1004) being arranged at the top of the blocking cylinder (1003), an electric push rod (10) being arranged on the side wall of the tripod (201), a pressure sensor (1001) being arranged at the end of the retracting rod of the electric push rod (10), and the pressure sensor (1001) being fixedly connected to the side wall of the slider via a connecting frame.

2. A fully automatic twist tester according to claim 1, characterized in that: The thread end fixing assembly comprises two sliding channels inside the expansion block (9), a pressing frame (901) is slidably installed inside the sliding channel, the forked wire end of the yarn (6) is inserted into the gap between the right end of the pressing frame (901) and the right side wall of the expansion block (9), a nut block is arranged at the left end of the pressing frame (901), a hexagon socket bolt (902) is rotatably arranged inside the nut block, and the end of the hexagon socket bolt (902) abuts against the left side wall of the expansion block (9), and a tensioning wire groove (407) matching the pressing frame (901) is arranged on the side wall of the rotating wheel (401).

3. A fully automatic twist tester according to claim 1, characterized in that: The pay-off assembly comprises a pay-off frame at the top of a base plate (2), a pay-off roller (5) is rotatably arranged in the middle of the pay-off frame, the yarn (6) is pulled out from the outside of the pay-off roller (5), and a locking valve (501) is arranged on the side wall of the pay-off frame.

4. A fully automatic twist tester according to claim 1, characterized in that: The clamping assembly comprises a roller clamping frame, wherein two pressing rollers (7) are rotatably arranged in the middle of the roller clamping frame, and the two pressing rollers (7) are respectively connected to the output shafts of two tensioning motors (701).

5. A fully automatic twist tester according to claim 1, characterized in that: The tension adjustment mechanism comprises a tension channel in the middle of the base plate (2), the tension channel is slidably mounted with a sliding column (801), the top of the sliding column (801) is provided with a hanging ring (8), the yarn (6) passes through the inside of the hanging ring (8), the bottom of the sliding column (801) is provided with a counterweight box (3), the side wall of the tripod (201) is provided with a lifting cylinder (301), the end of the telescopic rod of the lifting cylinder (301) is provided with a tray (302), the counterweight box (3) sits on the top surface of the tray (302), the counterweight box (3) is provided with a plurality of rectangular array counterweight holes, and lead bars are installed inside the counterweight holes.

6. A fully automatic twist tester according to claim 1, characterized in that: The servo motor (403) and the pressure sensor (1001) are connected to a computer processing module via a data link.

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