PAN-based carbon fiber precursor fixed-length automatic sampling device

Abstract

The utility model relates to the technical field of carbon fiber precursor testing, in particular to a PAN (Polyacrylonitrile)-based carbon fiber precursor fixed-length automatic sampling device which comprises a support frame, the unwinding damping device is arranged on one side of the supporting frame and is used for winding a precursor sample; the guide non-return device is fixedly installed at one end of the top of the supporting frame, the guide non-return device comprises a guide wheel, a pair of extrusion rollers and a second hanging carrier, the extrusion rollers are distributed up and down and rotatably installed on the supporting frame, and the guide wheel is rotatably installed on the side edge of the extrusion rollers; the output point of the guide wheel is over against the middle point position of the upper and lower extrusion rollers in the width direction; the mount II is suspended at the bottom of the guide non-return device to provide rotation resistance; the shearing device is arranged at the front end of the extrusion roller, and blades are symmetrically and fixedly mounted at the output end of the shearing device; the sampling device is simple in structure, high in stability, capable of replacing manual sampling, high in sampling efficiency, capable of cutting samples at fixed length and high in sample length control precision.

Description

Technical Field

[0001] The utility model patent relates to the technical field of carbon fiber precursor testing. Specifically, it relates to a fixed-length automatic sampling device for PAN-based carbon fiber precursors. Background Art

[0002] Carbon fiber has a series of excellent properties such as high specific strength, high specific modulus, high temperature resistance, corrosion resistance, fatigue resistance, creep resistance, electrical conductivity, heat transfer, and small coefficient of thermal expansion, and belongs to typical high-performance fibers. In the manufacturing of carbon fiber, considering various factors such as the difficulty of production technology and cost, an industrial production system of PAN-based carbon fiber, pitch-based carbon fiber, and viscose-based carbon fiber has gradually formed. The production process of PAN-based carbon fiber is simple and its comprehensive performance is the best, occupying a dominant position.

[0003] In the test of the linear density of PAN-based carbon fiber precursor, it is necessary to accurately intercept a fixed-length sample of carbon fiber precursor. The traditional sampling method is manual sampling, and there are the following problems with manual sampling: 1. Low sampling efficiency; 2. Poor control accuracy of the sample length; 3. Contamination of the sample by hand contact with the precursor sample. Therefore, this application provides a fixed-length automatic sampling device for PAN-based carbon fiber precursors. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a fixed-length automatic sampling device for PAN-based carbon fiber precursors, aiming to solve the problems raised in the background art.

[0005] The utility model is realized as follows and includes a support frame;

[0006] A pay-off damping device, which is arranged on one side of the support frame and is used for winding the precursor sample;

[0007] A guiding and anti-back device, which is fixedly installed at one end of the top of the support frame. The guiding and anti-back device includes a guiding wheel, a pressing roller, and a hanger two. A pair of pressing rollers are arranged up and down and rotatably installed on the support frame. The guiding wheel is rotatably installed on the side of the pressing roller. The output point of the guiding wheel is opposite to the middle point position in the width direction of the upper and lower pressing rollers. The hanger two is suspended at the bottom of the guiding and anti-back device to provide rotational resistance;

[0008] A shearing device, which is arranged at the front end of the pressing roller. Blades are symmetrically and fixedly installed at the output end of the shearing device;

[0009] A guide rail is fixedly installed on the top of the support frame. A fixed-length grabbing device is movably installed on the guide rail. The fixed-length grabbing device is provided with a wrench that can be opened and closed; A jogging receiving device is fixedly installed at the bottom of the support frame, which can jog and move at a fixed length to receive the precursor sample that falls after being cut off.

[0010] Furthermore, a motion cylinder is fixedly installed inside the guide rail.

[0011] Furthermore, a top shaft is arranged on the side of the wire feeding roller. A wrench is movably installed at one end of the top shaft away from the wire feeding roller. The wire feeding roller, the top shaft, and the wrench are all installed on the mounting bracket.

[0012] Furthermore, a hanging device 1 is suspended at the bottom of the wire feeding roller.

[0013] Furthermore, both the hanging device 1 and the hanging device 2 are weights.

[0014] Furthermore, a wire receiving plate is arranged in the middle of the lower part of the support frame. Cross plates are respectively fixedly installed on both sides of the support frame. Rotating shafts are respectively fixedly installed in the middle of both ends of the wire receiving plate. The two rotating shafts on both sides are respectively rotatably inserted into the middle through holes of the cross plates. An installation hole is formed in the middle of the side wall of the support frame. A plug pin is inserted into the installation hole. A jack is formed at a position corresponding to the installation hole on the side wall of the wire receiving plate. The plug pin is adapted to the jack.

[0015] Furthermore, a stop rod is fixedly installed on the inner wall of the support frame. The stop rod is arranged below the wire receiving plate.

[0016] Compared with the prior art, the utility model replaces manual sampling, has a high sampling efficiency, can intercept samples at a fixed length, has a high control precision for the sample length, and can also avoid contaminating the sample by hand contacting the raw fiber sample when sampling with this device; this device has a simple structure, is easy to install, operate and maintain, is not prone to failure, and has high stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. is the overall structural schematic diagram of a fixed-length automatic sampling device for PAN-based carbon fiber raw filaments provided by the utility model;

[0018] Figure 2 FIG. is the schematic diagram of the shearing device of a fixed-length automatic sampling device for PAN-based carbon fiber raw filaments provided by the utility model;

[0019] Figure 3 FIG. is the partial structural schematic diagram of a fixed-length automatic sampling device for PAN-based carbon fiber raw filaments provided by the utility model;

[0020] Figure 4 FIG. is the side view of the wire receiving plate of a fixed-length automatic sampling device for PAN-based carbon fiber raw filaments provided by the utility model;

[0021] Figure 5 FIG. is the top view of the wire receiving plate of a fixed-length automatic sampling device for PAN-based carbon fiber raw filaments provided by the utility model.

[0022] Reference numerals in the above-mentioned drawings: 1, unwinding damping device; 11, Mounting One; 12, wire unwinding roller; 13, top shaft; 14, wrench; 2, guiding check device; 21, guiding wheel; 22, squeezing roller; 23, Mounting Two; 3, shearing device; 4, jogging pick-up device; 5, fixed-length grasping device; 6, motion cylinder; 7, support frame; 8, cross plate; 9, through hole; 10, wire connecting plate; 101, rotating shaft; 102, mounting hole; 103, jack; 104, plug; 105, retaining rod. Detailed implementation manners

[0023] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model, and are not used to limit the present utility model.

[0024] The implementation of the present utility model will be described in detail below in conjunction with specific embodiments, including the support frame 7;

[0025] The unwinding damping device 1 is arranged on one side of the support frame 7 and is used for winding the raw silk sample;

[0026] The guiding check device 2 is fixedly installed at one end of the top of the support frame 7. The guiding check device 2 includes a guiding wheel 21, a squeezing roller 22 and a Mounting Two 23. A pair of squeezing rollers 22 are arranged and are rotatably installed on the support frame 7 in an up-and-down distribution. The guiding wheel 21 is rotatably installed on the side of the squeezing roller 22. The output point of the guiding wheel 21 is directly opposite to the middle point position in the width direction of the upper and lower squeezing rollers 22. The Mounting Two 23 is suspended at the bottom of the guiding check device 2 to provide rotational resistance;

[0027] The shearing device 3 is arranged at the front end of the squeezing roller 22, and blades are symmetrically and fixedly installed at the output end of the shearing device 3;

[0028] A guide rail is fixedly installed at the top of the support frame 7, and a fixed-length grasping device 5 is movably installed on the guide rail. The fixed-length grasping device 5 is provided with a wrench 14 that can be opened and closed; a jogging pick-up device 4 is fixedly installed at the bottom of the support frame 7, which can jog and move at a fixed length to pick up the raw silk sample that falls after being cut off;

[0029] During operation, the raw silk sample is wound around the wire pay-off roller 12. The wire pay-off roller 12 rotates to pay off the wire. After the raw silk sample is led out from the pay-off damping device 1, it enters the guiding and check device 2. The guide wheel 21 plays a guiding role. The guiding and check device 2 conveys the raw silk sample by pressing and rotating with the pressing roller 22. The raw silk sample is led out from the above-mentioned guiding and check device 2 for a certain distance to facilitate the fixed-length grasping device 5 to grasp the sample. The automatic sampling device is started. The gripper of the fixed-length grasping device 5 opens, the blade of the shearing device 3 opens, the fixed-length grasping device 5 approaches the guiding and check device 2, the gripper of the fixed-length grasping device 5 closes, and the raw silk sample is grasped. After the raw silk sample is grasped, the fixed-length grasping device 5 moves away from the guiding and check device 2 by a distance of 1 m and stops moving. The blade of the shearing device 3 closes to cut off the raw silk sample, the gripper of the fixed-length grasping device 5 opens, and the raw silk sample with a length of 1 m naturally falls onto the jogging sample receiving device 4, completing one sampling. The fixed-length grasping device 5 approaches the guiding and check device 2 again to grasp the raw silk sample, and the jogging sample receiving device 4 displaces one position, leaving the sample receiving position empty to prepare for receiving the next raw silk sample with a length of 1 m.

[0030] A motion cylinder 6 is fixedly installed inside the guide rail; during operation, it serves as a power device to provide power for the above-mentioned fixed-length grasping device 5.

[0031] A top shaft 13 is arranged on the side of the wire pay-off roller 12. A wrench 14 is movably installed at one end of the top shaft 13 away from the wire pay-off roller 12. The wire pay-off roller 12, the top shaft 13 and the wrench 14 are all installed on the mounting frame; during operation, the wrench 14 is opened, the top shaft 13 moves axially away from the wire pay-off roller 12, the wire pay-off roller 12 wound with the raw silk sample is taken off, the wire pay-off roller 12 wound with the raw silk sample is put back, the wrench 14 is closed, and the top shaft 13 moves axially close to the wire pay-off roller 12 to tightly fix the wire pay-off roller 12; so as to disassemble and replace the wire pay-off roller 12.

[0032] A suspension one 11 is hung at the bottom of the wire pay-off roller 12; during operation, it provides rotational resistance through the suspension one 11 to play a damping role.

[0033] Both the suspension one 11 and the suspension two 23 are weights; so as to control the weights of the suspension one 11 and the suspension two 23.

[0034] A wire connecting plate 10 is arranged in the middle of the lower part of the support frame 7. Transverse plates 8 are fixedly installed on both sides of the support frame 7 respectively. Rotating shafts 101 are fixedly installed in the middle of both ends of the wire connecting plate 10 respectively. The two rotating shafts 101 are respectively rotatably inserted into through holes 9 in the middle of the transverse plates 8. An installation hole 102 is formed in the middle of the side wall of the support frame 7. A pin 104 is inserted into the installation hole 102. A jack 103 is formed in the wire connecting plate 10 at a position corresponding to the installation hole 102. The pin 104 is adapted to the jack 103. During operation, when the picking device 4 is actuated for a fixed-length movement by point actuation, the cut original wire sample may slide off the rod body of the picking device 4 due to shaking. By arranging the wire connecting plate 10 below, the dropped original wire sample can be collected to prevent the original wire sample from falling to the ground and being contaminated, thus causing waste. In addition, by pulling out the side pin 104, the wire connecting plate 10 can be rotated around the rotating shaft 101, so that the original wire sample on the wire connecting plate 10 slides out from the side, facilitating the taking of the dropped original wire sample.

[0035] A stop rod 105 is fixedly installed on the inner wall of the support frame 7. The stop rod 105 is arranged below the wire connecting plate 10. During operation, the rotation angle of the wire connecting plate 10 is limited by arranging the stop rod 105.

[0036] In the drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and cannot be construed as a limitation of this patent. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0037] Refer to Figures 1-5 as shown, which is a preferred embodiment provided by the present invention.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic sampling device for a PAN-based carbon fiber precursor with a fixed length, characterized in that, Including a support frame (7); A pay-off damping device (1), arranged on one side of the support frame (7) for winding the raw silk sample; A guiding and anti-backflow device (2), fixedly installed at one end of the top of the support frame (7). The guiding and anti-backflow device (2) includes a guiding wheel (21), a pressing roller (22) and a hanger two (23). A pair of pressing rollers (22) are arranged and rotatably installed on the support frame (7) in an up-and-down distribution. The guiding wheel (21) is rotatably installed on the side of the pressing roller (22). The output point of the guiding wheel (21) is opposite to the middle point position of the width direction of the two upper and lower pressing rollers (22). The hanger two (23) is suspended at the bottom of the guiding and anti-backflow device (2) to provide rotational resistance; A shearing device (3), arranged at the front end of the pressing roller (22). Blades are symmetrically and fixedly installed on the output end of the shearing device (3); A guide rail is fixedly installed at the top of the support frame (7). A fixed-length grasping device (5) is movably installed on the guide rail. A wrench (14) capable of opening and closing is provided on the fixed-length grasping device (5); A jogging picking-up device (4) is fixedly installed at the bottom of the support frame (7), which can jog and move at a fixed length to pick up the raw silk sample that falls after being cut off.

2. The fixed-length automatic sampling device for PAN-based carbon fiber precursor according to claim 1, wherein, A motion cylinder (6) is fixedly installed inside the guide rail.

3. The fixed-length automatic sampling device for PAN-based carbon fiber precursor according to claim 2, wherein, A top shaft (13) is arranged on the side of the wire pay-off roller (12). A wrench (14) is movably installed at one end of the top shaft (13) away from the wire pay-off roller (12). The wire pay-off roller (12), the top shaft (13) and the wrench (14) are all installed on the mounting frame.

4. The automatic sampling device for fixed-length PAN-based carbon fiber precursor according to claim 3, characterized in that A hanger one (11) is suspended at the bottom of the wire pay-off roller (12).

5. An automatic sampling device for a fixed length of PAN-based carbon fiber precursor according to claim 4, characterized in that, Both the hanger one (11) and the hanger two (23) are weights.

6. The fixed-length automatic sampling device for PAN-based carbon fiber precursor according to claim 5, characterized in that, A wire receiving plate (10) is arranged in the middle of the lower part of the support frame (7). Cross plates (8) are respectively fixedly installed on both sides of the support frame (7). Rotating shafts (101) are respectively fixedly installed in the middle of both ends of the wire receiving plate (10). The two rotating shafts (101) on both sides are respectively rotatably inserted into the middle through holes (9) of the cross plates (8). A mounting hole (102) is opened in the middle of the side wall of the support frame (7). A plug pin (104) is inserted into the mounting hole (102). A jack (103) is opened at the position corresponding to the mounting hole (102) on the side wall of the wire receiving plate (10). The plug pin (104) is adapted to the jack (103).

7. An automatic sampling device for a fixed length of PAN-based carbon fiber precursor according to claim 6, characterized in that, A stop bar (105) is fixedly installed on the inner wall of the support frame (7). The stop bar (105) is arranged below the wire receiving plate (10).

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