CN209961560U - Carbon fiber sample preparation device tied in a bundle - Google Patents
Carbon fiber sample preparation device tied in a bundle Download PDFInfo
- Publication number
- CN209961560U CN209961560U CN201920246444.1U CN201920246444U CN209961560U CN 209961560 U CN209961560 U CN 209961560U CN 201920246444 U CN201920246444 U CN 201920246444U CN 209961560 U CN209961560 U CN 209961560U
- Authority
- CN
- China
- Prior art keywords
- support
- carbon fiber
- ring
- shaped
- fiber bundle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a carbon fiber system appearance device tied in a bundle, this carbon fiber system appearance device tied in a bundle, include: the device comprises a pre-pressing straightening assembly, a restraining ring assembly and a trimming assembly; the prepressing straightening assembly is used for compacting and straightening carbon fibers forming the carbon fiber bundle so as to obtain a cylindrical carbon fiber bundle; the confinement ring assembly comprises: an upper confinement ring and a lower confinement ring; the upper restraining ring and the lower restraining ring are two semicircular rings in a buckling mode, and a whole circle is formed after the upper restraining ring and the lower restraining ring are butted to be used as a restraining ring for restraining the carbon fiber bundle; the edge cutting assembly comprises a clamping device for clamping the restraint ring and a cutter for performing edge cutting treatment on the clamped carbon fiber bundle. The smoothness and the collimation of the carbon fiber bundling state can better meet the experimental requirements through the pre-pressing straightening assembly; the carbon fiber bundle sample can obtain accurate volume density and external dimension through the restraining ring; this system appearance device can be very big reduce the system appearance link of sample to the interference of experimental result.
Description
Technical Field
The utility model relates to a system appearance device, concretely relates to carbon fiber system appearance device tied in a bundle.
Background
Carbon fiber is known as one of the best comprehensive materials in the industry at present. It is a novel carbon material with the chemical composition containing more than 90% of carbon elements by mass. Carbon fibers and modified composite materials thereof have been widely used in many fields such as aerospace, machine manufacturing, textile, chemical engineering, civil engineering, medical care and the like, and the carbon fibers and the modified composite materials thereof have great practical application values.
The thermal conductivity is one of important physical property parameters for evaluating the thermal properties of the carbon fibers, and the accurate measurement of the axial thermal conductivity of the carbon fibers has important guiding significance for developing, preparing and evaluating carbon fibers with different thermal properties and composite materials thereof.
The heat conductivity of the material is tested by a plurality of methods, and the method can be roughly divided into a steady state method and a transient state method. The steady state method is used for directly measuring the thermal conductivity according to a Fourier equation, but the temperature range and the thermal conductivity range are narrow, and the method is mainly suitable for measuring the medium and low thermal conductivity material at medium temperature. The transient law has a wide application range, and is particularly suitable for high thermal conductivity materials and tests at high temperatures, wherein the method which is most rapidly developed, most representative and generally accepted by the international thermophysics community is the flash method (flash method), which is also called as a laser method or a laser flash method.
The traditional method for measuring the axial thermal conductivity of the carbon fiber mainly comprises an electrical method such as a direct current method, a T-shaped method and a 3 omega method. However, the radial size of the single carbon fiber is too small (usually only a few micrometers), and the thermal conductivity of the single carbon fiber is difficult to directly and accurately measure due to the heterogeneity. The laser flash method is adopted by the holly leaf and the like to obtain the thermal diffusivity and the thermal conductivity of the carbon fiber, and the feasibility of measuring the thermal diffusivity of the carbon fiber by the laser flash method is verified.
The current national Standard GB/T22588-2008 "flash Method for measuring Thermal Diffusivity or Thermal conductivity" is used in accordance with ASTM E1461-2001 "Standard Test Method for Thermal diffusion by the Flashmethod". The test method is suitable for measurements on substantially fully dense, homogeneous and isotropic solid materials that are opaque to the applied energy pulse. However, in some cases, acceptable results also occur when used on porous loose samples. Therefore, for carbon fibers with small radial dimensions and anisotropy, it is necessary to carry out axial thermal conductivity tests of carbon fibers by means of strict and appropriate experimental design, accommodating certain deviations from these strict criteria.
ASTM E1461-2013 Standard Test Method for Thermal diffusion by the flash Method requires that the Test specimen be a generally circular sheet with a front surface area smaller than the area of the energy beam. Typically, the test specimens are 10 to 12.5 mm in diameter (in particular cases, diameters as small as 6 mm, and diameters as large as 30 mm have been reported to be used successfully). The optimum thickness depends on the magnitude of the estimated thermal diffusivity and should be chosen such that the time to reach half the maximum temperature is in the range of 10 to 1000 ms. Thinner specimens are required at higher temperatures to minimize heat loss correction; however, the sample should generally be thick enough to represent the test material. Typically, the thickness is in the range of 1 to 6 mm.
Therefore, when the laser flash method is used for testing the axial heat conductivity (thermal diffusivity and thermal conductivity) of the carbon fibers, the carbon fibers must be bundled along the radial direction (a plurality of axially parallel carbon fibers are arranged into a cylinder), then a certain length is cut along the axial direction to prepare a circular thin sheet sample, and the sample and the preparation thereof are key links for measuring the thermal diffusivity by using the flash method.
At present, carbon fiber system appearance tied in a bundle mainly uses manual system appearance as leading, and two people's cooperations utilize the sticky tape to twine carbon fiber into cylindricly also, then one of them section with the cutter intercepting, grind two terminal surfaces with abrasive paper and flatten and make circular shape thin slice, and the inside ride comfort of carbon fiber bundle after manual system appearance is not enough, has the circumstances of raising, beating and twisting, and the sample degree of tightness changes along with manual strength change, and no rule influences the accuracy of test result. There are some documents and reports of using a cylindrical holder to make a carbon fiber bundle sample, but there are also problems that it is difficult to penetrate the carbon fiber bundle into the cylindrical holder, or the finished sample is difficult to meet the standards required by GB/T22588-2008 and ASTM E1461-2013 in terms of the accuracy of the outer dimension, the inner smoothness is insufficient, and the filling rate of the carbon fiber cannot be accurately determined.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a carbon fiber system appearance device tied in a bundle adopts the device preparation carbon fiber sample tied in a bundle can be very big reduce the system appearance link of sample to the interference of experimental result, guarantee the accuracy and the repeatability of experiment link, be convenient for the later stage to the analysis of experimental data and experimental result.
The carbon fiber bundling and sample preparing device comprises: the device comprises a pre-pressing straightening assembly, a restraining ring assembly and a trimming assembly;
the pre-pressing straightening assembly is used for pressing and straightening carbon fibers forming the carbon fiber bundle so as to obtain a cylindrical carbon fiber bundle;
the confinement ring assembly comprises: an upper confinement ring and a lower confinement ring; the upper restraint ring and the lower restraint ring are two semicircular rings in a buckling mode, a whole circle is formed after the two semicircular rings are butted to serve as the restraint ring, and the cylindrical carbon fiber cluster is restrained in the restraint ring;
the side cut subassembly includes the clamping device that is used for the centre gripping to have the restraint ring of carbon fiber bundling and is used for carrying out the side cut to the carbon fiber bundling after the centre gripping and handle in order to obtain carbon fiber bundling sample cutter.
Further, the pre-pressure straightening assembly comprises: the device comprises a first support, a second support, two T-shaped pressing blocks, a guide rail, a positioning nut, a sleeve and a connecting fastener;
the first support and the second support are both provided with U-shaped grooves penetrating through the front end surface and the rear end surface of the first support and the second support, and when the first support and the second support are in butt joint, the two U-shaped grooves are coaxially opposite; through holes for installing guide rails are respectively processed at the left end and the right end of the U-shaped grooves at the bottoms of the first support and the second support, and the first support and the second support are connected in series after the guide rails penetrate through the through holes at the bottoms of the first support and the second support; one end of the guide rail is fixed on the first bracket through a connecting fastener, and the other end of the guide rail penetrates through the second bracket and is sequentially connected with a sleeve and a positioning nut at the extending end of the guide rail;
the bottom of the vertical part of the T-shaped pressing block is provided with a semicircular groove, the vertical parts of the two T-shaped pressing blocks are respectively inserted into the U-shaped grooves on the first support and the second support, and the semicircular groove at the bottom of the vertical part of the T-shaped pressing block is butted with a semicircular inner concave surface at the bottom of the U-shaped groove to form a circular hole for placing carbon fiber bundles; and the two T-shaped pressing blocks are fixedly connected with the corresponding brackets respectively through connecting fasteners.
Further, the clamping device in the trim assembly comprises: the handle, the bracket tube and the compression ring; the handle is of a hollow pipe structure, and internal threads are processed on the inner circumferential surface at one end of the handle; one end of the support pipe is provided with an external thread matched with the internal thread of the handle, and the handle and the support pipe are coaxially connected through threaded connection; the other end is of a semicircular structure; the compression ring is of a semicircular structure with the radius consistent with that of the semicircular structure at the end part of the bracket pipe; the semicircular structure at the end part of the bracket pipe is butted and fixed with the pressure ring to form a tubular structure so as to clamp and restrain a restraining ring with a carbon fiber bundle; the inside of the support tube is provided with a shaft shoulder used for axially limiting the carbon fiber cluster.
Has the advantages that:
the sample preparation device standardizes the preparation process of the carbon fiber cluster sample, and the smoothness and the collimation of the carbon fiber cluster state can better meet the experimental requirements through the pre-pressing straightening assembly; the carbon fiber bundle sample can obtain accurate volume density and external dimension through the restraining ring; through carbon fiber sample device side cut subassembly tied in a bundle, can avoid the inhomogeneity on sample surface (sand hole, mar, stripe), adopt the system appearance link of the reduction sample that this system appearance device can be very big to the interference of experimental result, guarantee the accuracy and the repeatability of experimental link, be convenient for the later stage to the analysis of experimental data and experimental result, be favorable to using the application of flash of light method measurement carbon fiber axial thermal diffusivity to promote.
Drawings
FIG. 1 is a schematic structural view of a pre-pressing and straightening assembly of a carbon fiber bundle sample-making device;
FIG. 2 is a left side view of a pre-pressing and straightening assembly of the carbon fiber bundle sample-making device;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 2;
FIG. 5 is a cross-sectional view C-C of FIG. 2;
FIG. 6 is a cross-sectional view taken along line D-D of FIG. 2;
FIG. 7 is an enlarged view of a portion of FIG. 3 at I;
FIG. 8 is a schematic diagram of an upper confinement ring structure;
FIG. 9 is a schematic view of a lower confinement ring structure;
FIG. 10 is a schematic view of the upper and lower confinement rings in their operating positions;
FIG. 11 is a schematic view of an upper confinement ring positioning member;
FIG. 12 is a schematic view of a lower confinement ring positioning member;
FIG. 13 is a schematic view of the structure of the clamping device in the trim assembly;
FIG. 14 is a schematic view of a sample of straightened carbon fiber bundles;
FIG. 15 is a schematic view of the upper confinement assembly with the upper confinement ring;
FIG. 16 is a schematic view of a lower confinement assembly with a lower confinement ring;
fig. 17 is a schematic view of the working principle of the carbon fiber bundling and sample-making device.
Wherein: 1-hexagon head bolt; 2-T type briquetting; 3-a first scaffold; 4-screw a; 5-positioning the nut; 6-a guide rail; 7-lower confinement ring carrier; 8-spacer A; 9-screw B; 10-spacer B; 11-an upper confinement ring carrier; 12-spacer C; 13-spacer D; 14-a second support; 15-upper confinement rings; 16-lower confinement rings; 17-a sleeve; 18-a handle; 19-a stent tube; 20-a pressure ring; 21-screw C, 22-carbon fiber bundle
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
The embodiment provides a carbon fiber cluster sample preparation device, which is used for preparing a carbon fiber cluster sample, and the carbon fiber cluster sample prepared by the device can measure the axial thermal diffusion coefficient of carbon fiber by a flash method.
The carbon fiber bundling and sample preparing device comprises a pre-pressing straightening assembly, a restraining ring assembly and a trimming assembly.
As shown in fig. 1 to 6, the pre-straightening assembly includes: the device comprises a first bracket 3, a second bracket 14, two T-shaped pressing blocks 2, a guide rail 6, a positioning nut 5, a sleeve 17 and a connecting fastener; wherein the coupling fastener comprises a hexagon head bolt 1 and a screw a 4.
The connection relationship is as follows: u-shaped grooves penetrating through the front end face and the rear end face of the first support 3 and the second support 14 are machined on the first support 3 and the second support 14, and when the first support 3 and the second support 14 are in parallel butt joint, the two U-shaped grooves are opposite in position. The front end face of the first support 3 is butted with the rear end face of the second support 14, in order to realize accurate butt joint of two U-shaped grooves, strip-shaped bosses along the height direction of the U-shaped grooves are respectively processed at the left end and the right end of the U-shaped groove on the front end face of the first support 3, and strip-shaped grooves matched with the strip-shaped bosses are respectively processed at the left end and the right end of the U-shaped groove on the rear end face of the second support 14; through holes for installing guide rails 6 are respectively processed at the left end and the right end of a U-shaped groove at the bottom of the first support 3 and the bottom of the second support 14, the guide rails 6 penetrate through the through holes at the bottom of the first support 3 and the bottom of the second support 14 to connect the first support 3 and the second support 14 together, the rear end of each guide rail 6 is fixed on the first support 3 through a screw A4, and after the front end of each guide rail penetrates through the second support 14, a sleeve 17 and a positioning nut 5 are sequentially connected on the extending end of each guide rail 6, so that the strip-shaped bosses on the first support 3 are tightly combined with the strip-shaped grooves of the second support 14, and the U-shaped grooves on the first support 3 and the U-shaped grooves on the second support 14 are completely coplanar with each plane and.
The bottom of the vertical portion of the T-shaped pressing block 2 is processed to form a semicircular groove, the bottom surface of the T-shaped pressing block is in an inwards concave semicircular arc shape, the width of the vertical portion of the T-shaped pressing block 2 is slightly smaller than that of the U-shaped groove, the vertical portions of the two T-shaped pressing blocks 2 are respectively inserted into the U-shaped grooves in the first support 3 and the second support 14, the semicircular groove in the bottom of the vertical portion of the T-shaped pressing block 2 is in butt joint with the semicircular inwards concave surface of the bottom of the U-shaped groove, and a circular groove. The T-shaped pressing block 2 is fixedly connected with the corresponding support through the hexagonal head bolts 1 at the two ends of the horizontal part of the T-shaped pressing block, and prepressing of carbon fiber bunches in the U-shaped groove is achieved through the T-shaped pressing block 2.
The confinement ring assembly comprises: the restraint ring, go up restraint ring locating component and restraint ring locating component down. As shown in fig. 8-10, the constraining ring is formed by two half-rings in a snap-fit manner, the two half-rings are an upper constraining ring 15 and a lower constraining ring 16, the upper constraining ring 15 and the lower constraining ring 16 are butted to form a whole circle, the upper constraining ring 15 and the lower constraining ring 16 are connected at the butted position in a snap-fit manner, so that the upper constraining ring and the lower constraining ring cannot be separated along the radial direction, and the carbon fiber bundle is constrained in the constraining ring.
As shown in fig. 11, the upper confinement ring positioning member includes: upper confinement ring bracket 11, locating piece B10, locating piece D13 and coupling fastener, wherein the coupling fastener is screw B9. Go up restraint ring bracket 11 one end and be the semicircular structure unanimous with last restraint ring 15 arc, go up restraint ring 15 and place on semicircular structure arc surface, spacer B10 and spacer D13 are installed on the both sides terminal surface of last restraint ring bracket 11 semicircular structure through screw B9 respectively, it presss from both sides tightly to be located the last restraint ring 15 between the two, realize the location to last restraint ring 15, from this through spacer B10, spacer D13 and semicircular structure arc surface restriction last restraint ring 15 axial and radial displacement, prevent that last restraint ring 15 from rotating and from droing from last restraint ring bracket 11.
The structure of the lower confinement ring positioning component is the same as that of the upper confinement ring positioning component, as shown in fig. 12, specifically including: lower confinement ring bracket 7, spacer A8, spacer C12 and coupling fasteners, wherein the coupling fasteners are screws B9. One end of the lower restraint ring bracket 7 is of a semicircular structure consistent with the arc shape of the lower restraint ring bracket 16, the lower restraint ring 16 is placed on the arc surface of the semicircular structure, a positioning piece A8 and a positioning piece C12 are respectively installed on the end surfaces of two sides of the semicircular structure of the lower restraint ring bracket 7 through screws B9, the lower restraint ring 16 located between the positioning piece A8 and the positioning piece C12 is clamped, the lower restraint ring 16 is positioned, therefore, the axial displacement and the radial displacement of the lower restraint ring 16 are limited through the positioning piece A8, the positioning piece C12 and the arc surface of the semicircular structure, and the lower restraint ring 16 is prevented from rotating and falling off from the lower restraint ring bracket 7.
As shown in fig. 13, the trimming assembly is used for clamping a clamping device for clamping a restraining ring restraining a carbon fiber bundle and a cutter for trimming the clamped carbon fiber bundle to obtain a carbon fiber bundle sample. Wherein clamping device includes: handle 18, bracket tube 19, compression ring 20 and screws C21. Wherein the handle 18 is a hollow tube structure, and the inner circumferential surface of one end is provided with an internal thread; the support tube 19 is of a hollow stepped hole structure, one end of the support tube is provided with an external thread matched with the internal thread of the handle 18, and the handle 18 and the support tube 19 are coaxially connected through threaded connection; the other end of the bracket tube 19 is of a semicircular structure, and bosses are arranged at the radial two ends of the semicircular structure; the press ring 20 is a semicircular structure with the same radius as that of the semicircular structure at the end part of the support tube 19, and the two radial ends of the press ring are also provided with bosses. Wherein the inner diameter of the semicircular structure at the end part of the support tube 19 is slightly smaller than or equal to the outer diameter of the restraint ring (so that the restraint ring can be clamped when the restraint ring is matched with the restraint ring), and the inner hole radius of the part with the external thread is smaller than that of the part with the boss, thereby forming a shaft shoulder inside the support tube 19. After the restraint ring restraining the carbon fiber bundles is placed in the semicircular structure at the end part of the support tube 19, the pressing ring 20 is butted with the semicircular structure at the end part of the support tube 19 and is fixedly connected with the semicircular structure at the end part of the support tube 19 through a screw C21 on the shaft shoulder, so that the buckled restraint ring containing the carbon fiber bundles is clamped by a tubular structure formed by matching the semicircular structure at the end part of the support tube 19 and the pressing ring 20.
The prepared carbon fiber cluster sample for the axial heat conduction performance test comprises a constraint ring and a carbon fiber cluster constrained inside the constraint ring, wherein the carbon fiber cluster is a cylinder formed by arranging a plurality of axially parallel carbon fibers to be tested.
The process of preparing the carbon fiber cluster sample by adopting the carbon fiber sample preparation device comprises the following steps:
(1) calculating mass M of the required carbon fiber bundle
The carbon fiber bundle is as compact as possible when in the confinement ring, and theoretically, the maximum volume filling rate of 80 percent can be achieved, 50 to 80 percent is more appropriate, and the higher volume filling rate is preferred.
Selecting a bundle of carbon fibers to be detected with the length of L and the mass of m, and calculating the cross-sectional area S of a single carbon fiber to be detected according to the formula (1) according to the specific gravity rho of the carbon fiber to be detectedc：
Calculating the sectional area S of the inner hole of the confinement ring according to the inner diameter D of the confinement ring by the formula (2)y：
Setting a volume filling rate K, and obtaining a cross-sectional area S of the carbon fiber bundle with the volume filling rate K according to an equation (3):
S＝KSy(3)
from the formula (4), S and S are obtainedcThe proportionality coefficient of (a):
the mass of carbon fibers required to achieve the volume fill K is then: m ═ Φ M.
(2) Compact carbon fiber bundle
Weighing the carbon fiber to be tested with the mass M, bundling the carbon fiber, horizontally placing the U-shaped grooves formed by the coplanarity of the first support 3 and the second support 14 after being butted, downwards inserting the semicircular grooves on the two T-shaped pressing blocks 2 into the U-shaped grooves of the first support 3 and the second support 14 respectively, screwing in the hexagonal bolts, and realizing the prepressing of the carbon fiber bundling through the T-shaped pressing blocks 2.
(3) Straightening carbon fiber bundle
The positioning nut 5 and the sleeve 17 are sequentially removed from the guide rail 6, and then the positioning nut 5 is screwed into the guide rail 6. As shown in fig. 14, the hexagon head bolt 1 on the second support 14 is loosened until the second support 14 and the T-shaped pressing block 2 can move forward along the guide rail 6, and stop when moving to be attached to the positioning nut 5, so that the carbon fiber bundle is straightened, and the hexagon head bolt 1 on the second support 14 is screwed to press the carbon fiber bundle.
(4) Assembly restraint ring component
As shown in fig. 15, the upper confinement ring 15 is placed in the semicircular groove of the upper confinement ring bracket 11, and since the thickness of the semicircular groove of the upper confinement ring bracket 11 is slightly smaller than that of the upper confinement ring 15, the positioning pieces B10 and D13 are respectively installed on two sides of the upper confinement ring bracket 11 through screws B9, so as to clamp and position the upper confinement ring 15, and the upper confinement ring 15 and the upper confinement ring positioning component are assembled to form an upper confinement ring component.
As shown in fig. 16, the lower confinement ring 16 is placed in the semicircular groove of the lower confinement ring bracket 7, and since the thickness of the semicircular groove portion of the lower confinement ring bracket 7 (which is the same as the thickness of the semicircular groove portion of the upper confinement ring 15) is slightly smaller than that of the lower confinement ring 16, the clamping and positioning of the lower confinement ring 16 can be achieved by respectively installing the positioning pieces a8 and C12 on both sides of the lower confinement ring bracket 7 by the screws B9. The lower confinement ring 16 and the lower confinement ring positioning member are assembled to form the lower confinement ring member.
(5) Restraint of carbon fiber bundles
As shown in fig. 17, the upper confinement ring member is fitted from top to bottom and the lower confinement ring member is fitted from bottom to top into the space between the first and second supports 3 and 14, wherein the semicircular grooves of the upper and lower confinement ring brackets 11 and 7 are opposed; to achieve the guidance of the upper and lower confinement ring members, the upper and lower confinement ring brackets 11, 7 are designed with a width corresponding to the distance between the two strip-shaped protrusions of the first carrier 3, whereby the upper and lower confinement ring members are guided by the two strip-shaped protrusions of the first carrier 3 to enable vertical docking of the upper and lower confinement ring members. In operation, the lower restraining ring part, the first bracket 3 and the bottom surface of the second bracket 14 are placed on the operating platform, certain pressure is applied to the upper restraining ring part from the upper side to enable the top of the upper restraining ring part and the top surface of the T-shaped pressing block 2 to be at the same level, at the moment, the upper restraining ring 15 and the lower restraining ring 16 are buckled together to form a restraining ring, and therefore the restraining of the restraining ring on the carbon fiber bundle is achieved.
(6) Carbon fiber bundle restrained by restraint ring for taking out
Loosening the hexagon head bolt 1, and removing the T-shaped pressing block 2; the positioning nut 5 is loosened and the second bracket 14 is removed from the guide rail 6. And sequentially loosening the fastening screws on the positioning sheets on the same side on the upper and lower constraint ring parts so as to take out the carbon fiber bundle restrained by the constraint rings.
(7) Completing the preparation of the carbon fiber cluster sample
And (3) properly shearing the carbon fiber bundles which are taken out and restrained by the restraint rings and extend out of the two ends of the restraint rings to be longer so as to facilitate subsequent trimming. As shown in fig. 13, carbon fiber bundles to be trimmed are placed in a semicircular structure at the end of a trimming tool support tube 19, the axis direction of the carbon fiber bundles is positioned by a shoulder of a stepped hole in the support tube 19, a press ring 20 is fixedly butted with the semicircular structure at the end of the support tube 19 through a screw 21, the buckled restraint ring containing the carbon fiber bundles is clamped by matching the formed tubular structure, and a cutter is used for cutting off redundant carbon fibers along the edge of the end of the restraint ring. And finishing the edge cutting of the carbon fiber bundle at the other end of the restraint ring by the method after finishing, thereby obtaining the carbon fiber bundle sample with the form consistent with the thickness of the restraint ring.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A carbon fiber bundling and sample preparation device is characterized by comprising: the device comprises a pre-pressing straightening assembly, a restraining ring assembly and a trimming assembly;
the pre-pressing straightening assembly is used for pressing and straightening carbon fibers forming the carbon fiber bundle so as to obtain a cylindrical carbon fiber bundle;
the confinement ring assembly comprises: an upper confinement ring (15) and a lower confinement ring (16); the upper restraint ring (15) and the lower restraint ring (16) are two semicircular rings in a buckling mode, a whole circle is formed after the two semicircular rings are butted to form the restraint ring, and the cylindrical carbon fiber cluster is restrained in the restraint ring;
the side cut subassembly includes the clamping device that is used for the centre gripping to have the restraint ring of carbon fiber bundling and is used for carrying out the side cut to the carbon fiber bundling after the centre gripping and handle in order to obtain carbon fiber bundling sample cutter.
2. The carbon fiber bundle sample preparation device according to claim 1, wherein the pre-pressing straightening assembly comprises: the device comprises a first support (3), a second support (14), two T-shaped pressing blocks (2), a guide rail (6), a positioning nut (5), a sleeve (17) and a connecting fastener;
the first support (3) and the second support (14) are respectively provided with a U-shaped groove which penetrates through the front end surface and the rear end surface of the first support, and when the first support (3) is butted with the second support (14), the two U-shaped grooves are coaxially opposite; through holes for installing guide rails (6) are respectively processed at the left end and the right end of a U-shaped groove at the bottoms of the first support (3) and the second support (14), and the first support (3) and the second support (14) are connected in series after the guide rails (6) penetrate through the through holes at the bottoms of the first support (3) and the second support (14); one end of the guide rail (6) is fixed on the first bracket (3) through a connecting fastener, and the other end of the guide rail penetrates through the second bracket (14) and is sequentially connected with a sleeve (17) and a positioning nut (5) at the extending end of the guide rail;
semicircular grooves are processed at the bottoms of the vertical parts of the T-shaped pressing blocks (2), the vertical parts of the two T-shaped pressing blocks (2) are respectively inserted into the U-shaped grooves on the first support (3) and the second support (14), and the semicircular grooves at the bottoms of the vertical parts of the T-shaped pressing blocks (2) are butted with the semicircular inner concave surfaces at the bottoms of the U-shaped grooves to form round holes for placing carbon fiber bundles; the two T-shaped pressing blocks (2) are fixedly connected with the corresponding brackets through connecting fasteners respectively.
3. The carbon fiber bundle sample preparation device according to claim 2, wherein strip-shaped bosses are respectively processed at the left end and the right end of the U-shaped groove along the height direction on the end surfaces of the first support (3) and the second support (14) opposite to each other;
strip-shaped grooves matched with the strip-shaped bosses are respectively machined at the left end and the right end of the U-shaped groove on the end face, opposite to the first support (3), of the second support (14);
the strip-shaped bosses and the strip-shaped grooves are butt joint positioning faces of the first support (3) and the second support (14), when the first support (3) is in butt joint with the second support (14), the strip-shaped bosses on the first support (3) are located in the strip-shaped grooves of the second support (14), and each plane and curved face of the two U-shaped grooves are guaranteed to be axially coplanar along the guide rail (6).
4. The carbon fiber bundle sample preparation device according to claim 1, wherein the clamping device in the edge cutting assembly comprises: a handle (18), a support tube (19) and a press ring (20); the handle (18) is of a hollow pipe structure, and internal threads are processed on the inner circumferential surface of one end of the handle; one end of the support tube (19) is provided with an external thread matched with the internal thread of the handle (18), and the handle (18) and the support tube (19) are coaxially connected through threaded connection; the other end is of a semicircular structure; the compression ring (20) is of a semicircular structure with the radius consistent with that of the semicircular structure at the end part of the support pipe (19); the semicircular structure at the end part of the support tube (19) is butted and fixed with the pressing ring (20) to form a tubular structure so as to clamp and restrain a restraining ring with a carbon fiber bundle; and a shaft shoulder used for axially limiting the carbon fiber bundle is arranged in the support tube (19).
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920246444.1U CN209961560U (en) | 2019-02-27 | 2019-02-27 | Carbon fiber sample preparation device tied in a bundle |
| EP20763573.1A EP3957972A4 (en) | 2019-02-27 | 2020-04-21 | Carbon fibre bundle sample preparation apparatus, and preparation method for carbon fibre bundle |
| PCT/CN2020/085828 WO2020173508A1 (en) | 2019-02-27 | 2020-04-21 | Carbon fibre bundle sample preparation apparatus, and preparation method for carbon fibre bundle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920246444.1U CN209961560U (en) | 2019-02-27 | 2019-02-27 | Carbon fiber sample preparation device tied in a bundle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209961560U true CN209961560U (en) | 2020-01-17 |
Family
ID=69238033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920246444.1U Active CN209961560U (en) | 2019-02-27 | 2019-02-27 | Carbon fiber sample preparation device tied in a bundle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209961560U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900534A (en) * | 2019-02-27 | 2019-06-18 | 北京市理化分析测试中心 | A kind of preparation method of carbon fiber boundling sample preparation device and carbon fiber boundling |
| WO2020173508A1 (en) * | 2019-02-27 | 2020-09-03 | 北京市理化分析测试中心 | Carbon fibre bundle sample preparation apparatus, and preparation method for carbon fibre bundle |
-
2019
- 2019-02-27 CN CN201920246444.1U patent/CN209961560U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900534A (en) * | 2019-02-27 | 2019-06-18 | 北京市理化分析测试中心 | A kind of preparation method of carbon fiber boundling sample preparation device and carbon fiber boundling |
| WO2020173508A1 (en) * | 2019-02-27 | 2020-09-03 | 北京市理化分析测试中心 | Carbon fibre bundle sample preparation apparatus, and preparation method for carbon fibre bundle |
| CN109900534B (en) * | 2019-02-27 | 2023-09-01 | 北京市理化分析测试中心 | Carbon fiber bundling sample preparation device and carbon fiber bundling preparation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209961560U (en) | Carbon fiber sample preparation device tied in a bundle | |
| CN108426788B (en) | Rock direct shear experiment test piece, test piece clamp and shear test method thereof | |
| CN106353181B (en) | The asymmetric clamping device and experimental method of thin plate compression | |
| US8997577B2 (en) | Method and apparatus for measuring residual stresses in a component | |
| CN109900534B (en) | Carbon fiber bundling sample preparation device and carbon fiber bundling preparation method | |
| CN110031313B (en) | Test device and method for evaluating mechanical property of T-shaped structure | |
| CN108225904B (en) | The fixture that rocks in direct tension is tested and the test method based on the fixture | |
| CN113203621A (en) | Special clamp for mechanical test of plate-shaped sample | |
| CN209784012U (en) | Carbon fiber sample tied in a bundle | |
| EP3957972A1 (en) | Carbon fibre bundle sample preparation apparatus, and preparation method for carbon fibre bundle | |
| CN208223991U (en) | A kind of Gu fatigue of wood characteristic test apparatus | |
| CN208487357U (en) | A kind of cable CT scan bracket | |
| CN102658490A (en) | Bent pipe sample machining fixture | |
| CN109855934B (en) | Carbon fiber bundling sample and preparation method thereof | |
| CN111678776B (en) | Indirect stretching device for testing tensile strength of rock | |
| CN210570434U (en) | Utensil is examined to clutch low pressure pipe | |
| Husain et al. | Design of a simple, versatile, small-specimen punch test setup for determination of the mechanical behavior of materials. | |
| US3309918A (en) | Test sample holding and alignment means for tensile testing machines | |
| Fleming et al. | The energy absorption of composite plates under off-axis loads | |
| EP3933374A1 (en) | Carbon fibre bundle sample and preparation method therefor | |
| CN210615865U (en) | Processing equipment for longitudinal arc-shaped tensile sample | |
| CN117245196B (en) | Strain balance electron beam welding structure and welding method thereof | |
| CN212206918U (en) | Reinforcing bar bending strength test fixture | |
| CN210161450U (en) | Rock sample cutting and fixing device suitable for different sizes | |
| CN215065781U (en) | Elongation measuring device for metal material tensile test |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |