CN117686356A - Carbon fiber unwinding testing device and testing method thereof - Google Patents
Carbon fiber unwinding testing device and testing method thereof Download PDFInfo
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- CN117686356A CN117686356A CN202410146242.5A CN202410146242A CN117686356A CN 117686356 A CN117686356 A CN 117686356A CN 202410146242 A CN202410146242 A CN 202410146242A CN 117686356 A CN117686356 A CN 117686356A
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 141
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 141
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 138
- 238000012360 testing method Methods 0.000 title claims abstract description 41
- 238000004804 winding Methods 0.000 claims description 34
- 238000013016 damping Methods 0.000 claims description 33
- 230000000149 penetrating effect Effects 0.000 claims description 17
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 239000002131 composite material Substances 0.000 abstract description 2
- 238000009730 filament winding Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000010923 batch production Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007380 fibre production Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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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
- G01N3/26—Investigating twisting or coiling properties
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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
- G01N3/02—Details
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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
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Inorganic Fibers (AREA)
Abstract
The invention provides a carbon fiber unwinding testing device and a testing method thereof, which belong to the technical field of carbon fiber composite material production. The carbon fiber unwinding testing device provided by the invention can simulate the unwinding process of carbon fibers under different working conditions, so that the unwinding performance of carbon fiber rolls before mass production can be actually measured, and the performance defect of carbon fiber filaments can be timely found.
Description
Technical Field
The invention belongs to the technical field of carbon fiber composite production, and particularly relates to a carbon fiber unwinding testing device and a testing method thereof.
Background
Due to the characteristics of high strength, high modulus, light weight and the like of the carbon fiber, the carbon fiber is beneficial to the rapid development of markets such as wind power blades, aviation industry, automobile, sports product manufacturing and the like, the demand of the carbon fiber is rapidly improved, and the application field of the carbon fiber industry is wide. At present, the carbon fiber industry in China is in an explosion growth period, the market speed increase of carbon fiber demands in the future is kept at about 17%, and the demand field is further expanded along with the continuous breakthrough of carbon fiber technology.
Almost all carbon fiber products are manufactured by unwinding, guiding and then spreading, braiding or dipping the carbon fiber rolls. The unwinding condition has a plurality of influencing factors, such as fiber yarn quantity, bundling property and the like. Therefore, the unwinding situation of the carbon fiber coil under various working conditions is actually measured before mass production, and the method has important significance for carbon fiber production and carbon fiber processing.
Disclosure of Invention
The invention aims to provide a carbon fiber unwinding testing device and a testing method thereof, which aim to actually measure the unwinding condition of a carbon fiber roll under various working conditions before mass production of the carbon fiber roll and timely find out the performance defects of carbon fiber yarns.
In order to achieve the above purpose, the invention adopts the following technical scheme: provided is a carbon fiber unwinding testing device, comprising:
a work table;
the unwinding assembly comprises a base, the base is rotatably connected to the workbench, two brackets are arranged at the upper end of the base, a threading shaft is rotatably connected between the two brackets, the threading shaft is used for sleeving a carbon fiber roll, and a driver for driving the base to horizontally rotate is arranged at the lower end of the base;
the wire collecting assembly is arranged on the workbench and comprises a wire collecting roller used for winding carbon fiber wires and a traction motor in transmission connection with the wire collecting roller;
the guide assembly is arranged on the workbench and is positioned between the unwinding assembly and the filament collecting assembly, the guide assembly comprises a longitudinal expansion device, the longitudinal expansion device is fixed on the workbench, a first guide ring is arranged at the upper end of the longitudinal expansion device, and a first guide hole for a carbon fiber filament to pass through is formed in the first guide ring;
the controller is electrically connected with the driver and the longitudinal telescopic device respectively, and the controller enables the relative position of the threading shaft and the first guide ring to be changed by controlling the action of the driver and the longitudinal telescopic device so as to enable the filament outlet direction of the carbon fiber roll to be changed.
In one possible implementation, a tensiometer for monitoring the amount of carbon fiber tension is provided between the longitudinal telescopic device and the take-up roller.
In one possible implementation manner, a longitudinal rod is arranged between the longitudinal telescopic device and the filament collecting roller, a second guide ring is arranged on the longitudinal rod, a second guide hole for the carbon fiber filament to pass through is formed in the second guide ring, and the tensiometer is arranged between the longitudinal rod and the filament collecting roller.
In one possible implementation, the bracket includes:
the first frame body is provided with a first through groove at the upper end, a connecting sleeve is arranged in the first through groove, one end of the penetrating scroll close to the first frame body is penetrated in the connecting sleeve, a first bearing is arranged between the connecting sleeve and the penetrating scroll, and the connecting sleeve is rotationally connected between two side walls of the first through groove through a pin shaft and used for enabling the penetrating scroll to swing up and down in the first through groove;
the second support body, the upper end of second support body is equipped with the second through groove, the second through groove is equipped with the block in the slip, the middle part of block runs through and is equipped with the connecting axle, the connecting axle with be equipped with the second bearing between the block, the connecting axle orientation the tip of first support body be equipped with be used for with wear spool insert fit's spread groove, slide the block is used for making the spread groove with wear spool transmission cooperation or separation.
In a possible implementation manner, the end portion of the threading shaft, which is located at one side of the first frame body, is provided with a connecting block, the bottom of the first through groove is provided with a yielding groove corresponding to the connecting block, the connecting block and the yielding groove are both provided with a magnetic attraction piece, the threading shaft rotates upwards, and when the threading shaft is longitudinally parallel to the first frame body, the connecting block is contained in the yielding groove and is fixed through the magnetic attraction piece.
In a possible implementation manner, a first stop block and a second stop block are arranged in the second through groove, the first stop block and the second stop block are respectively located at two sides of the sliding direction of the block body and used for limiting the moving range of the block body, the first stop block is located at one side close to the second frame body, and when the winding shaft is in a horizontal state, the upper end face of the first stop block is abutted to the winding shaft and used for supporting the winding shaft.
In one possible implementation manner, a straight rod is arranged at one end of the block, facing the first block, and a yielding hole is arranged on the first block along the sliding direction of the block, the straight rod is arranged in the yielding hole in a penetrating manner, a anticreep nut is connected to the straight rod in a threaded manner, and the anticreep nut is located at one side, away from the block, of the first block.
In one possible implementation manner, the block body is provided with a first mounting groove towards one end of the first frame body, a second mounting groove is provided at the other end of the first frame body, a connecting through hole is provided between the first mounting groove and the second mounting groove, the connecting shaft and the second bearing are arranged in the first mounting groove, an extension section is arranged on the connecting shaft, the extension section penetrates through the connecting through hole to extend to the outside of the second mounting groove, and a damping component used for limiting rotation of the extension section is arranged in the second mounting groove.
In one possible implementation, the damping component includes:
the number of the rocking bars is two, the two rocking bars are both rotationally connected to the bottom of the second mounting groove and symmetrically arranged on two sides of the extension section, a friction block is arranged on one side of the rocking bar, which faces the extension section, and a tension spring is arranged between one side of the rocking bar, which is far away from the extension section, and the side wall of the second mounting groove;
the electromagnet is arranged between the two rocking bars and drives the rocking bars to swing towards the extension section through magnetic attraction so as to enable the friction block to resist the extension section;
the current regulator is connected with the electromagnet in series, and the current regulator regulates the magnetic force of the electromagnet through controlling current so as to change the friction force between the friction block and the extension section.
The carbon fiber unwinding testing device provided by the invention has the beneficial effects that: compared with the prior art, in the carbon fiber unwinding testing device, the positions of the unwinding component and the first guide ring can be respectively changed by controlling the driver and the longitudinal telescopic device, so that the filament outlet direction of the carbon fiber roll sleeved on the winding shaft is changed, the unwinding process of the carbon fiber under different working conditions is simulated, the unwinding performance of the carbon fiber roll before batch production can be actually measured, and the performance defect of the carbon fiber can be timely found.
The invention also provides a carbon fiber unwinding testing method, which uses the carbon fiber unwinding testing device and comprises the following steps:
s1, winding carbon fiber on a winding shaft, pulling carbon fiber wires from the carbon fiber winding shaft, sequentially passing through a first guide ring and a second guide ring, and winding on a wire collecting roller;
s2, controlling a driver to rotate the carbon fiber roll to a first position;
s3, setting a height position interval of the first guide ring, and controlling the longitudinal expansion device to fix the first guide ring at any position in the height position interval;
s4, starting a traction motor, adjusting the damping strength of the damping component once every a period of time, and observing unwinding conditions of the carbon fiber under different damping conditions;
s5, adjusting the position of the first guide ring in the height position interval, and repeating the step S4;
s6, setting the damping strength of the damping part to be an arbitrary fixed value, and controlling the longitudinal telescopic device to enable the first guide ring to move back and forth in the height position interval so as to observe the unwinding condition of the carbon fiber;
s7, starting a driver to rotate the carbon fiber roll to a second position, and repeating the steps S3-S6;
s8, fixing the first guide ring at any height position in the height position interval, setting the damping strength of the damping part to be any fixed value, controlling the driver to enable the carbon fiber roll to change positions back and forth between the first position and the second position, and observing unwinding condition of the carbon fiber.
The carbon fiber unwinding testing method provided by the invention has the beneficial effects that: compared with the prior art, the carbon fiber unwinding testing method has the advantages that the positions between the winding shaft and the first guide ring are changed relatively, so that the filament outlet direction of the carbon fiber roll is changed, the unwinding process of the carbon fiber roll under different working conditions can be simulated, the unwinding performance of the carbon fiber roll before mass production can be measured actually, and the performance defect of the carbon fiber filament can be found timely.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a top view of a carbon fiber unwinding testing device according to an embodiment of the present invention in a first position;
FIG. 2 is a top view of a carbon fiber unwinding testing device according to an embodiment of the present invention in a second position;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 4 is a top view of an unwind assembly provided by an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;
FIG. 6 is an enlarged schematic view of M in FIG. 5;
fig. 7 is a view along the K direction of fig. 5 of a first frame provided in an embodiment of the present invention;
FIG. 8 is an enlarged schematic view of N in FIG. 5;
FIG. 9 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 10 is a cross-sectional view taken along line D-D of FIG. 4;
FIG. 11 is a front view of a block provided by an embodiment of the present invention;
fig. 12 provides a rear view of the block according to the embodiment of the present invention.
Reference numerals illustrate:
10. carbon fiber filaments; 20. a carbon fiber roll; 100. a work table; 101. a ball; 102. a mounting cavity; 200. an unwind assembly; 201. a base; 202. a drive shaft; 203. a driver; 300. a wire collecting assembly; 301. a wire collecting roller; 302. a traction motor; 400. a guide assembly; 401. a longitudinal expansion device; 402. a first guide ring; 500. a tensiometer; 601. a second guide ring; 602. a longitudinal bar;
1. threading the scroll; 11. a fixed snap ring; 12. a movable clasp; 13. a connecting block; 14. a square shaft body; 2. a first frame body; 21. a first through groove; 22. a relief groove; 3. a second frame body; 31. a second through slot; 32. a chute; 33. a first stopper; 331. a relief hole; 34. a second stopper; 4. connecting sleeves; 41. a pin shaft; 42. a first bearing; 5. a block; 51. a first mounting groove; 52. a second mounting groove; 53. a connecting through hole; 54. a connecting shaft; 541. an extension section; 55. a connecting groove; 56. a second bearing; 57. a straight rod; 58. a drop-proof nut; 59. a slide block; 6. a magnetic attraction piece; 7. an electromagnet; 8. a rocker; 81. a friction block; 9. and a tension spring.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 3, a carbon fiber unwinding testing device and a testing method thereof according to the present invention will now be described. The carbon fiber unwinding testing device comprises a workbench 100, an unwinding assembly 200, a filament winding assembly 300, a guide assembly 400 and a controller, wherein the unwinding assembly 200 comprises a base 201, the base 201 is rotatably connected to the workbench 100, two supports are arranged at the upper end of the base 201, a winding shaft 1 is rotatably connected between the two supports, the winding shaft 1 is used for sleeving a carbon fiber roll 20, a driver 203 for driving the base 201 to horizontally rotate is arranged at the lower end of the base 201, the filament winding assembly 300 is arranged on the workbench 100, the filament winding assembly 300 comprises a filament winding roller 301 for winding carbon fiber filaments 10, and a traction motor 302 in transmission connection with the filament winding roller 301, the guide assembly 400 is arranged on the workbench 100 and is positioned between the unwinding assembly 200 and the filament winding assembly 300, the guide assembly 400 comprises a longitudinal telescopic device 401 fixed on the workbench 100, a first guide ring 402 is arranged at the upper end of the longitudinal telescopic device 401, a first guide hole for allowing the carbon fiber filaments 10 to pass through is formed in the first guide ring 402, the controller is respectively electrically connected with the driver 203 and the longitudinal telescopic device 401, and the controller 203 is in a position of the longitudinal telescopic device 401 relative to the longitudinal telescopic device 401 through the controller 203 and the longitudinal telescopic device 401, and the position of the carbon fiber winding device is changed to enable the carbon fiber winding direction to change.
Compared with the prior art, in the unwinding test of carbon fibers, the carbon fiber unwinding test device provided by the invention has the advantages that the positions of the unwinding component 200 and the first guide ring 402 can be respectively changed by controlling the driver 203 and the longitudinal telescopic device 401, so that the filament outlet direction of the carbon fiber roll 20 sleeved on the winding shaft 1 is changed, the unwinding process of carbon fibers under different working conditions is simulated, the unwinding performance of the carbon fiber roll 20 before batch production can be actually measured, and the performance defect of the carbon fiber 10 can be timely found.
In this embodiment, referring to fig. 1 to 5, the unwinding assembly 200 is disposed at a left side end of the workbench 100, wherein the base 201 is located at an upper end surface of the workbench 100, a ball 101 is disposed between the base 201 and the workbench 100, a driving shaft 202 is connected to a middle portion of a lower end of the base 201, the driving shaft 202 is longitudinally disposed, a mounting cavity 102 is disposed on the workbench 100 corresponding to the driving shaft 202, a driver 203 is disposed in the mounting cavity 102, the driving shaft 202 penetrates the workbench 100 downwards and extends into the mounting cavity 102, and is in driving connection with a driving end of the driver 203, in this embodiment, the driver 203 is a servo motor, and the servo motor can drive the base 201 to rotate forward and reverse through forward rotation and reverse rotation. The two supports are fixed on the upper end face of the base 201, the threading shaft 1 is rotationally connected between the two supports, two clamping rings are sleeved on the threading shaft 1, one clamping ring is a fixed clamping ring 11 fixedly connected with the threading shaft 1, the other clamping ring is a movable clamping ring 12 in threaded connection with the threading shaft 1, when the carbon fiber winding machine is used, the movable clamping ring 12 is taken out from the threading shaft 1, then the carbon fiber winding machine 20 is sleeved on the threading shaft 1, the carbon fiber winding machine 20 is abutted against the fixed clamping ring 11, then the movable clamping ring 12 is threaded on the threading shaft 1, and the carbon fiber winding machine 20 can be installed by rotating the movable clamping ring 12 to clamp the carbon fiber winding machine 20.
In some embodiments, referring to fig. 4 to 8, two brackets are a first bracket body 2 and a second bracket body 3 respectively, wherein a first through groove 21 is provided at an upper end of the first bracket body 2, a connecting sleeve 4 is provided in the first through groove 21, the connecting sleeve 4 is rotatably connected between two side walls of the first through groove 21 through a pin 41 provided on two diametrically opposite sides thereof, one end of a penetrating spool 1 near the first bracket body 2 is penetrated in the connecting sleeve 4, and a first bearing 42 is provided between the connecting sleeve 4 and the penetrating spool 1, and it can be understood that through the above arrangement, the penetrating spool 1 can swing up and down in the first through groove 21 by means of the rotational connection of the connecting sleeve 4 and the first through groove 21.
Further, referring to fig. 6 and 7, the end of the threading shaft 1 on one side of the first frame 2 passes through the connecting sleeve 4 and is exposed outside the connecting sleeve 4, a connecting block 13 is disposed on the end of the side, a yielding groove 22 is disposed at the bottom of the first through groove 21 corresponding to the connecting block 13, and magnetic attraction pieces 6 are disposed on the connecting block 13 and the yielding groove 22, in application, when the threading shaft 1 rotates up to be longitudinally parallel to the first frame 2, the connecting block 13 will rotate down to be accommodated in the yielding groove 22, and the connecting block 13 can be adsorbed in the yielding groove 22 by means of the magnetic attraction pieces 6, so that the threading shaft 1 can be kept in a vertical state, and when the threading shaft 1 is in a vertical state, the carbon fiber roll 20 sleeved on the threading shaft 1 can be conveniently replaced.
In this embodiment, referring to fig. 8 to 12, a second through slot 31 is provided at the upper end of the second frame 3, a block 5 is slidably provided in the second through slot 31, a connecting shaft 54 is provided in the middle of the block 5, a second bearing 56 is provided between the connecting shaft 54 and the block 5, a connecting slot 55 for inserting and assembling with the threading shaft 1 is provided at the end of the connecting shaft 54 facing the first frame 2, and in practical application, the connecting slot 55 and the threading shaft 1 can be in transmission fit or separated by sliding the second block 5.
Specifically, referring to fig. 8 to 12, the lateral walls of the two sides of the second through slot 31 are respectively provided with a sliding slot 32, the two sides of the block 5 facing the lateral walls of the second through slot 31 are respectively provided with a sliding block 59, the sliding blocks 59 are slidably connected in the sliding slots 32, and the block 5 is slidably connected in the second through slot 31 by means of the cooperation of the sliding slots 32 and the sliding blocks 59. In this embodiment, the connecting groove 55 is a square groove, the end portion of the threading shaft 1 located at one side of the second frame body 3 is connected with the square shaft body 14, the square shaft body 14 is used for being inserted and assembled with the square groove, the threading shaft 1 can be in transmission connection with the connecting shaft 54 by means of the square shaft body 14 and the square groove, the threading shaft 1 can be rotationally connected with the second frame body 3 by means of the second bearing 56, in practical application, when the carbon fiber coil 20 is required to be installed on the threading shaft 1, the square shaft body 14 on the threading shaft 1 is separated from the connecting groove 55 by sliding the block 5 to the side far away from the first frame body 2, at this time, one end of the square shaft body 14 is a free end, the threading shaft 1 is kept longitudinally parallel to the first frame body 2 by swinging upwards, at this time, the threading shaft 1 is kept longitudinally parallel to the first frame body 2 by means of the connecting block 13 is adsorbed in the position groove 22, the threading shaft 1 is kept longitudinally fixed, at this time, the carbon fiber coil 20 can be sleeved on the threading shaft 1, the carbon fiber coil 20 is fixed by the fixed ring and the movable ring 12, the carbon fiber coil 20 is then swung downwards towards the first frame body 3, the side of the first frame body 2 is inserted and the square shaft body 2 is inserted into the connecting groove 2 again, and the square shaft body 2 is horizontally inserted into the drum body 2, and the carbon fiber coil is installed on the side of the first frame body 2, and the carbon fiber coil is horizontally arranged.
Further, referring to fig. 8, a first stop 33 and a second stop 34 are disposed in the second through slot 31, the first stop 33 and the second stop 34 are both connected between two sidewalls of the second through slot 31, and disposed on two sides of the block 5 along a sliding direction of the block 5, the first block 5 and the second block 5 are used for limiting a moving range of the block 5 in the second through slot, preventing the block 5 from being separated from the second through slot 31 when sliding, wherein the first stop 33 is disposed on a side close to the first frame 2, a height of the first stop 33 is appropriate, when the penetrating spool 1 is in a horizontal state, an upper end surface of the first stop 33 is abutted against the penetrating spool 1 for supporting the penetrating spool 1, and the first stop 33 is disposed in such a manner that the penetrating spool 1 can be supported while blocking the moving range of the block 5, thereby reducing a radial pressure of the penetrating spool 1 to the second bearing 56 and improving a service life of the second bearing 56. In addition, the first stop block 33 supports the threading shaft 1, so that the longitudinal pressure of the threading shaft 1 to the block 5 is reduced, and the friction force between the block 5 and the second through groove 31 is reduced, so that the block 5 can move smoothly.
Further, referring to fig. 8, in order to prevent the connecting groove 55 from automatically separating from the square shaft 14 due to external factors during the use of the device, a straight rod 57 is disposed on an end surface of the block 5 facing the first block 33, a yielding hole 331 is disposed on the first block 33 along the sliding direction of the block 5, the diameter of the yielding hole 331 is larger than that of the straight rod 57, the straight rod 57 is disposed in the yielding hole 331 in a penetrating manner, a drop-preventing nut 58 is connected to the straight rod 57 in a threaded manner, and the drop-preventing nut 58 is disposed on a side of the first block 33 away from the block 5. When in use, when the block 5 moves to one side of the first stop block 33, the square shaft body 14 is inserted into the connecting groove 55, the anti-falling nut 58 is abutted against the first block 5 by rotating the anti-falling nut 58 on the straight rod 57, and the block 5 and the first stop block 33 can be relatively fixed by means of the straight rod 57 and the anti-falling nut 58, so that the block 5 can be effectively prevented from being influenced by the outside to automatically move in the use process of the device.
In some embodiments, referring to fig. 8 to 12, a first mounting groove 51 is formed at one end of the block 5 facing the first frame 2, a second mounting groove 52 is formed at the other end, a connecting through hole 53 is formed between the first mounting groove 51 and the second mounting groove 52, a connecting shaft 54 and a second bearing 56 are disposed in the first mounting groove 51, an extension 541 is disposed on the connecting shaft 54, the extension 541 extends to the outside of the second mounting groove 52 through the connecting through hole 53, and a damping member for restricting the rotation of the extension 541 is disposed in the second mounting groove 52. In practical application, the winding shaft 1 is a driven shaft, when the rotation speed of the traction motor 302 is fixed, the winding shaft 1 rotates under the traction of the carbon fiber 10, and the damping component performs damping action through the extension section 541, so that the carbon fiber 10 can change the traction force of the winding shaft 1, in other words, the tension of the carbon fiber 10 in unwinding operation can be controlled by controlling the damping strength of the damping component.
Specifically, please refer to fig. 8 and 12, the damping component includes two rockers 8, an electromagnet 7 and a current regulator, wherein the number of rockers 8 is two, the two rockers 8 are both rotationally connected to the bottom of the second mounting groove 52 and symmetrically arranged at two sides of the extension 541, a friction block 81 is arranged at one side of the rockers 8 facing the extension 541, a tension spring 9 is arranged between one side of the rockers 8 far away from the extension 541 and the side wall of the second mounting groove 52, the electromagnet 7 is arranged between the two rockers 8, in this embodiment, the rockers 8 include a fixed end and a free end, the fixed end is rotationally connected in the second mounting groove 52, the electromagnet 7 is installed at one side of the free end of the rockers 8, a magnetic metal is arranged at the free end of the rockers 8, when the electromagnet 7 is electrified to generate magnetic force, then magnetic attraction is generated at the free end of the rockers 8, and the rockers 8 are driven to swing towards the extension 541, so that the friction block 81 arranged on the rockers 8 is pressed against the extension 541, the extension 541 is damped by the extension 541, the current regulator is connected in series with the electromagnet 7, and the current regulator can regulate the magnetic force of the electromagnet 7, so that the friction block 81 varies the friction block 81 between the extension 541 and the extension 541.
Through the arrangement, the tension of the carbon fiber 10 can be controlled within a certain range by means of the damping component in the unwinding test, so that the unwinding simulation test performed by the device can be more relevant to the actual working condition.
In some embodiments, referring to fig. 1 to 3, a tensiometer 500 for monitoring the tension of the carbon fiber filament 10 is disposed between the longitudinal expansion device 401 and the filament receiving roller 301, further, in order to ensure the monitoring effect of the tensiometer 500 and reduce the influence of the variation of the filament outlet direction of the carbon fiber roll 20 on the tensiometer 500, a longitudinal rod 602 is disposed between the longitudinal expansion device 401 and the filament receiving roller 301, a second guide ring 601 is disposed on the longitudinal rod 602, a second guide hole through which the carbon fiber filament 10 passes is disposed in the second guide ring 601, and the tensiometer 500 is disposed between the longitudinal rod 602 and the filament receiving roller 301, in this embodiment, the height of the longitudinal rod 602 is fixed, so that the transmission direction of the carbon fiber filament 10 within the distance between the longitudinal rod 602 and the filament receiving roller 301 is fixed, and the tensiometer 500 is convenient for monitoring the tension of the carbon fiber filament 10.
The invention also provides a carbon fiber unwinding testing method, which uses the testing device and comprises the following specific steps:
s1, packaging a carbon fiber roll 20 on a threading shaft 1, pulling a carbon fiber wire 10 from the carbon fiber roll 20, and winding the carbon fiber wire on a wire collecting roller 301 through a first guide ring 402 and a second guide ring 601 in sequence;
s2, controlling the driver 203 to rotate the carbon fiber roll 20 to a first position;
the first position in this step refers to the position where the carbon fiber roll 20 is located when the axial direction of the threading shaft 1 is perpendicular to the central line of the projection of the first guide ring 402 and the second guide ring 601 on the working table 100, as shown in fig. 1, and at this time, the carbon fiber roll 20 can be radially spun.
S3, setting a height position interval of the first guide ring 402, and controlling the longitudinal telescopic device 401 to fix the first guide ring 402 at any position in the height position interval;
s4, starting the traction motor 302, adjusting the damping strength of the damping component once every a period of time, and observing unwinding conditions of the carbon fiber filaments 10 under different damping conditions;
in this step, a sudden stop of the threading shaft 1 is caused by the instant excessive damping strength.
S5, adjusting the position of the first guide ring 402 in the height position interval, and repeating the step S4;
s6, setting the damping strength of the damping component to be an arbitrary fixed value, and controlling the longitudinal telescopic device 401 to enable the first guide ring 402 to move back and forth in the height position interval so as to observe the unwinding condition of the carbon fiber filaments 10;
s7, starting the driver 203 to rotate the carbon fiber roll 20 to a second position, and repeating the steps S3-S6;
the second position in this step refers to the position where the carbon fiber roll 20 is located when the axial direction of the threading shaft 1 is parallel to the central line of the projection of the first guide ring 402 and the second guide ring 601 on the working table 100, as shown in fig. 2, and at this time, the carbon fiber roll 20 can be fed out in the weft direction.
S8, fixing the first guide ring 402 at any height position in the height position interval, setting the damping strength of the damping component to be any fixed value, controlling the driver 203 to enable the carbon fiber roll 20 to change positions back and forth between the first position and the second position, and observing the unwinding condition of the carbon fiber filaments 10.
Compared with the prior art, the carbon fiber unwinding testing method provided by the invention has the advantages that the positions between the winding shaft 1 and the first guide ring 402 are changed relatively, so that the filament outlet direction of the carbon fiber roll 20 is changed, the unwinding process of the carbon fiber roll 20 under different working conditions can be simulated, the unwinding performance of the carbon fiber roll 20 before mass production can be measured, and the performance defect of the carbon fiber 10 can be found in time.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. A carbon fiber unwinding testing device, comprising:
a work table (100);
the unwinding assembly (200), the unwinding assembly (200) comprises a base (201), the base (201) is rotatably connected to the workbench (100), two supports are arranged at the upper end of the base (201), a threading shaft (1) is rotatably connected between the two supports, the threading shaft (1) is used for sleeving a carbon fiber roll (20), and a driver (203) for driving the base (201) to horizontally rotate is arranged at the lower end of the base (201);
the wire collecting assembly (300) is arranged on the workbench (100), and the wire collecting assembly (300) comprises a wire collecting roller (301) used for winding the carbon fiber wires (10) and a traction motor (302) in transmission connection with the wire collecting roller (301);
the guide assembly (400) is arranged on the workbench (100) and is positioned between the unwinding assembly (200) and the filament collecting assembly (300), the guide assembly (400) comprises a longitudinal expansion device (401), the longitudinal expansion device (401) is fixed on the workbench (100), a first guide ring (402) is arranged at the upper end of the longitudinal expansion device (401), and a first guide hole for a carbon fiber filament (10) to pass through is formed in the first guide ring (402);
the controller is electrically connected with the driver (203) and the longitudinal telescopic device (401) respectively, and the controller enables the relative positions of the threading shaft (1) and the first guide ring (402) to be changed by controlling the actions of the driver (203) and the longitudinal telescopic device (401) so as to enable the filament outlet direction of the carbon fiber roll (20) to be changed.
2. A carbon fiber unwinding testing device according to claim 1, characterized in that a tensiometer (500) for monitoring the tension of the carbon fiber filaments (10) is arranged between the longitudinal telescopic device (401) and the filament collecting roller (301).
3. The carbon fiber unwinding testing device according to claim 2, wherein a vertical rod (602) is arranged between the vertical telescopic device (401) and the filament collecting roller (301), a second guide ring (601) is arranged on the vertical rod (602), a second guide hole for a carbon fiber filament (10) to pass through is formed in the second guide ring (601), and the tensiometer (500) is arranged between the vertical rod (602) and the filament collecting roller (301).
4. A carbon fiber unwinding testing device according to claim 3, wherein said support comprises:
the novel lifting device comprises a first frame body (2), wherein a first through groove (21) is formed in the upper end of the first frame body (2), a connecting sleeve (4) is arranged in the first through groove (21), one end, close to the first frame body (2), of a penetrating spool (1) is arranged in the connecting sleeve (4) in a penetrating mode, a first bearing (42) is arranged between the connecting sleeve (4) and the penetrating spool (1), the connecting sleeve (4) is connected between two side walls of the first through groove (21) in a rotating mode through a pin shaft (41), and the connecting sleeve is used for enabling the penetrating spool (1) to swing up and down in the first through groove (21);
the second support body (3), the upper end of second support body (3) is equipped with second through groove (31), the second through groove (31) is interior to be equipped with block (5), the middle part of block (5) is run through and is equipped with connecting axle (54), connecting axle (54) with be equipped with second bearing (56) between block (5), connecting axle (54) orientation the tip of first support body (2) be equipped with be used for with wear spool (1) insert fit's spread groove (55), slide block (5) are used for making spread groove (55) with wear spool (1) transmission cooperation or separation.
5. The carbon fiber unwinding testing device according to claim 4, wherein a connecting block (13) is arranged at the end part of the winding shaft (1) located at one side of the first frame body (2), a yielding groove (22) is arranged at the bottom of the first through groove (21) corresponding to the connecting block (13), magnetic attraction pieces (6) are arranged on the connecting block (13) and the yielding groove (22), and the winding shaft (1) rotates upwards, and when the winding shaft is longitudinally parallel to the first frame body (2), the connecting block (13) is contained in the yielding groove (22) and is fixed through the magnetic attraction pieces (6).
6. The carbon fiber unwinding testing device according to claim 5, wherein a first stop block (33) and a second stop block (34) are disposed in the second through groove (31), the first stop block (33) and the second stop block (34) are respectively located at two sides of the sliding direction of the block body (5) and used for limiting the moving range of the block body (5), the first stop block (33) is located at one side close to the second frame body (3), and when the winding shaft (1) is in a horizontal state, the upper end face of the first stop block (33) is abutted to the winding shaft (1) and used for supporting the winding shaft (1).
7. The carbon fiber unwinding testing device according to claim 6, wherein a straight rod (57) is arranged at one end of the block body (5) facing the first stop block (33), a yielding hole (331) is arranged on the first stop block (33) along the sliding direction of the block body (5), the straight rod (57) is penetrated in the yielding hole (331), an anti-disengaging nut (58) is connected to the straight rod (57) in a threaded manner, and the anti-disengaging nut (58) is located at one side of the first stop block (33) away from the block body (5).
8. A carbon fiber unwinding testing device according to claim 7, characterized in that one end of the block body (5) facing the first frame body (2) is provided with a first mounting groove (51), the other end is provided with a second mounting groove (52), a connecting through hole (53) is arranged between the first mounting groove (51) and the second mounting groove (52), the connecting shaft (54) and the second bearing (56) are arranged in the first mounting groove (51), an extension section (541) is arranged on the connecting shaft (54), the extension section (541) penetrates through the connecting through hole (53) to extend to the outside of the second mounting groove (52), and a damping component for limiting the rotation of the extension section (541) is arranged in the second mounting groove (52).
9. The carbon fiber unwinding testing device of claim 8, wherein said damping member comprises:
the number of the rocking bars (8) is two, the two rocking bars (8) are both rotationally connected to the bottom of the second mounting groove (52) and symmetrically arranged on two sides of the extension section (541), a friction block (81) is arranged on one side, facing the extension section (541), of the rocking bar (8), and a tension spring (9) is arranged between one side, away from the extension section (541), of the rocking bar (8) and the side wall of the second mounting groove (52);
the electromagnet (7) is arranged between the two rocking bars (8), and the electromagnet (7) drives the rocking bars (8) to swing towards the extension section (541) through magnetic attraction so as to enable the friction block (81) to press against the extension section (541);
and the current regulator is connected with the electromagnet (7) in series, and regulates the magnetic force of the electromagnet (7) by controlling current so as to change the friction force between the friction block (81) and the extension section (541).
10. A carbon fiber unwinding testing method using the carbon fiber unwinding testing device according to claim 9, comprising the steps of:
s1, mounting a carbon fiber roll (20) on a threading shaft (1), pulling carbon fiber wires (10) from the carbon fiber roll (20), and winding the carbon fiber wires on a wire collecting roller (301) through a first guide ring (402) and a second guide ring (601) in sequence;
s2, controlling a driver (203) to rotate the carbon fiber roll (20) to a first position;
s3, setting a height position interval of the first guide ring (402), and controlling the longitudinal telescopic device (401) to fix the first guide ring (402) at any position in the height position interval;
s4, starting a traction motor (302), adjusting the damping strength of the damping component once every a period of time, and observing unwinding conditions of the carbon fiber filaments (10) under different damping conditions;
s5, adjusting the position of the first guide ring (402) in the height position interval, and repeating the step S4;
s6, setting the damping strength of the damping component to be an arbitrary fixed value, and controlling the longitudinal telescopic device (401) to enable the first guide ring (402) to move back and forth in the height position interval so as to observe the unwinding condition of the carbon fiber filaments (10);
s7, starting a driver (203) to rotate the carbon fiber roll (20) to a second position, and repeating the steps S3-S6;
s8, fixing the first guide ring (402) at any height position in the height position interval, setting the damping strength of the damping component to be any fixed value, controlling the driver (203) to enable the carbon fiber roll (20) to change positions back and forth between the first position and the second position, and observing the unwinding condition of the carbon fiber yarn (10).
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