Large-tow carbon fiber drafting steam treatment device

Abstract

The invention relates to the technical field of fiber manufacturing and processing, in particular to a large-tow carbon fiber drafting steam treatment device which comprises a drafting roller, a head and tail conveying part, fiber silk threads, a steam conveying frame, a steam adding pipe, a steam heating module, a monitoring module and a main body. A first driving part is installed in an upper side opening position of the box shell, a second driving part is installed in a lower side opening position of the box shell, and a control panel is installed on the left side of the box shell. By means of the steam conveying frame, the drafting rollers, the steam adding pipe, the steam heating module and other structures, the drafting steam treatment device can draft carbon fibers and conduct comprehensive and sufficient high-temperature steam heating on the carbon fibers at the same time with the occupied space of a single device.

Description

Technical Field

[0001] The present application relates to the technical field of fiber production and processing, and in particular to a large-tow carbon fiber drafting steam treatment device. Background Art

[0002] Large-tow carbon fiber is a high-performance fiber material formed by a series of process treatments of carbon fiber precursor. It has broad application prospects and market demand. Carbon fiber precursor needs to go through three stages of drawing during the processing. The purpose of steam drawing is to arrange the polyacrylonitrile macromolecular chains in the precursor along the axial direction, improve the orientation of the polymer, and improve the mechanical properties of the fiber. Steam drawing is achieved by using saturated water vapor as the drawing medium. High-pressure and high-temperature water molecules penetrate into the fiber, hydrogen bonds occur, and a plasticizing effect is achieved.

[0003] Steam stretching of carbon fiber requires a stretching device. Existing stretching equipment is usually composed of a driving mechanism, a stretching mechanism and a heating mechanism. The heating mechanism may use electric heating, steam heating or hot air heating to heat the roller body of the stretching mechanism. The roller body is in direct contact with the fiber, and the fiber is heated by the high-temperature surface of the roller body to ensure that the fiber can be stretched by heat. Since this heating process is achieved by heat conduction, the moisture in the steam cannot contact the carbon fiber, and hydrogen bonding cannot occur to produce a plasticizing effect, affecting the stretching effect of the carbon fiber. Therefore, this type of stretching equipment cannot be directly used for steam stretching of carbon fiber. In response to this situation, manufacturers generally use a steam heating box to directly heat the carbon fiber. Since there are two devices, the space occupied by the carbon fiber steam stretching process is large, which is not conducive to the use of factory space. Therefore, based on the above problems, a large-tow carbon fiber stretching steam treatment device is proposed. Summary of the invention

[0004] The purpose of the present application is to provide a large-tow carbon fiber drawing steam treatment device to solve the problem that the existing drawing steam device is difficult to be directly applied to the steam drawing of carbon fiber, and therefore needs to be used in conjunction with a steam heating box to directly heat the carbon fiber. However, since there are two devices, this leads to the problem of a large space occupied by the carbon fiber steam drawing process.

[0005] To achieve the above objectives, this application provides the following technical solutions: A large-tow carbon fiber drafting steam treatment device, comprising a drafting roller, a head and tail transmission part, a fiber filament, a steam conveying rack, a steam adding pipe, a steam heating module, a monitoring module and a main body, the main body comprising a base, the upper side of the base is fixedly connected to a box shell, a first driving part is installed in the upper side opening of the box shell, a second driving part is installed in the lower side opening of the box shell, a control panel is installed on the left side of the box shell, the front ends of the front output shafts of the first driving part and the second driving part are fixedly connected to the drafting roller, the drafting roller comprises a roller body, a cavity is opened on the inner side of the roller body, a ring channel is opened on the front and rear sides of the roller body, and a passage is connected between the cavity and the ring channel An opening, an annular groove is provided on the outer side of the annular channel, a group of the drafting rollers are equipped with steam conveying racks on both sides, the steam conveying rack comprises a rail ring rotatably connected to the annular groove, the inner side of the rail ring is fixedly connected to an annular shell on the inner side of the annular channel, a group of the annular shells are connected with a series pipe, an exhaust hole is provided in the upper left annular shell of the front steam conveying rack, and a steam adding pipe is connected to the left part of the lower left annular shell of the rear steam conveying rack, head and tail transmission parts are installed on both sides of the front end surface of the box shell, and a steam heating module is installed on the upper part of the annular shell on the upper left side, the fiber threads pass through a group of head and tail transmission parts and the steam heating module and bypass a group of drafting rollers.

[0006] The cam is connected with the exhaust gas fan of the gas heating unit, and the exhaust gas fan of the gas heating unit is connected with the exhaust gas fan of the gas heating unit at the exhaust gas cantilever rim.

[0007] Preferably, the first drive unit is composed of a motor and a three-axis transfer case, the second drive unit is composed of a motor and a two-axis transfer case, the first drive unit, the second drive unit and the control panel are electrically connected, the head and tail transmission units include a fixed seat fixedly connected to the front end face of the box shell, the front side of the fixed seat is rotatably connected to a group of two transmission rollers, the front end face of the fixed seat is fixedly connected to a branching frame located on the upper side of the transmission rollers, the branching frame is composed of base strips and a group of partition strips, the fiber threads are all arranged between a group of transmission rollers, and the fiber threads are all arranged between a group of partition strips of the branching frame.

[0008] Preferably, the steam delivery racks are connected to the stretching rollers, the gas delivery pipes are composed of a lower pipe, a middle pipe, an upper pipe, a group of branch pipes and elastic baffles fixed in the branch pipes, the upper pipe of the gas delivery pipes is connected to a group of branch pipes, and a cross slit is provided on the inner side of the elastic baffle of the gas delivery pipes.

[0009] Preferably, five groups of through holes are equidistantly arranged on the inner side of the curved surface of the exhaust shell, the upper curved surface of the receiving shell fits with the lower curved surface of the exhaust shell, the receiving shell is connected with the three middle groups of through holes of the exhaust shell, the steam transport shell is composed of a shell body, a wire groove and through holes opened at the wire groove, the fiber wires are all arranged in the wire groove of the steam transport shell, the fiber wires are all arranged between the steam transport shell and the cover plate, and gaps are left between the fiber wires and the steam transport shell and the cover plate.

[0010] Preferably, an alarm is installed on the upper side of the box shell, and a monitoring module is installed on the left side of the steam heating module, the monitoring module includes a base plate fixedly connected to the left side of the exhaust shell, the right end face of the vertical plate of the base plate is fixedly connected to the gas storage part, the gas storage part includes a storage shell, an elastic band is fixedly connected to the right opening of the storage shell, an elastic sheet is fixedly connected to the front circular opening of the storage shell, a folding block is fixedly connected to the front side of the vertical plate of the base plate, a contact button located in front of the elastic sheet is installed on the rear end face of the folding block, a transmission part is installed in the horizontal plate rotating groove of the base plate, the transmission part includes an arm rod rotatably connected to the horizontal plate rotating groove of the base plate, a pressure block is fixedly connected to the upper left side of the arm rod, and a wheel shell is fixedly connected to the lower end of the arm rod, and a guide wheel that fits the fiber thread is rotatably connected to the inner side of the wheel shell.

[0011] Preferably, the pressing blocks are fitted with the elastic band, the arm rod and the push rod are aligned horizontally left and right, the push rod and the branch pipe of the gas pipe are aligned horizontally left and right, the thickness of the elastic band is greater than the thickness of the elastic sheet, and a gap is provided between the elastic sheet and the contact button.

[0012] Preferably, the contact button and the alarm are electrically connected, the fiber threads are all arranged on the lower side of the guide wheel, and the fiber threads are all fitted with the wheel groove of the guide wheel.

[0013] Compared with the prior art, the beneficial effects of this application are: 1. In the present application, by means of the steam conveying frame, drafting roller, steam adding pipe and steam heating module and other structures, the first driving part and the second driving part of the main body can control the upper and lower drafting rollers to rotate at different speeds and in different directions, so that the fiber threads in contact with them can obtain a greater drafting force during the walking process. At this time, high-temperature water vapor is conveyed to the rear steam conveying frame through the steam adding pipe, so that the steam conveying frame can convey high-temperature water vapor to the rotating drafting roller, and the high-temperature water vapor passing through the drafting roller can heat and increase the temperature of the outer surface of the roller body, so that the roller body heats the contacted fiber threads, so that the fiber threads can be stretched by heat in cooperation with the drafting force. On the other hand, the water vapor passing through the drafting roller will converge into the front steam conveying frame, and then be conveyed into the transfer shell through the gas conveying pipe fittings, and discharged from the exhaust shell on the lower side of the transfer shell. The exhaust shell will discharge part of the high-temperature water vapor directly between a group of soft belts and a group of support plates to preheat the fiber threads walking on the lower side of the soft belt with high-temperature water vapor Heat, and another part of the high-temperature water vapor will be discharged into the receiving shell, and transported to the steam conveying shell of the gas-heat division through the folded pipe. This part of the high-temperature water vapor can be discharged through the through hole of the steam conveying shell, so that the high-temperature water vapor can perform high-temperature water vapor post-heating on the fiber yarns passing through the steam conveying shell line groove, so that after the fiber yarns are pre-heated and post-heated by the high-temperature water vapor, the supersaturated water vapor can be used as a drawing medium, so that the high-pressure and high-temperature water molecules can penetrate into the fiber yarns to produce hydrogen bonds, thereby achieving a plasticizing effect, ensuring the quality of the fiber yarns after steam drawing, and realizing that the drawing steam treatment device can simultaneously draw and fully heat the carbon fiber with the space occupied by a single device, solving the problem that the existing drawing steam device is difficult to be directly applied to the steam drawing of carbon fiber, so it is necessary to cooperate with the steam heating box to directly heat the carbon fiber, and because there are two devices, this leads to the problem of a large space occupied by the carbon fiber steam drawing process; 2. In the present application, by arranging the gas transmission pipe fittings, monitoring modules, alarm devices and fiber threads and other structures, the transmission parts of the monitoring modules are all set on the upper side of the traveling fiber threads. If the fiber threads are not broken, the transmission parts will maintain an unchanged angle due to the limitation of the fiber threads. If the fiber threads are broken during the stretching process, the transmission parts that lose the limitation will rotate counterclockwise under the influence of gravity and become vertical. At the same time, the high-temperature water vapor flow discharged from the corresponding branch of the gas transmission pipe fittings will push the corresponding push rod to move to the left, and the leftward displacement of the push rod can further push the arm of the transmission part to rotate counterclockwise, so that the pressure block of the transmission part squeezes the elastic band of the gas storage part, and the squeezing of the elastic band will squeeze the air in the gas storage part. Since the thickness of the elastic sheet is thinner than that of the elastic band, the air will first be deformed and bulged outward after being squeezed, so that the bulging elastic sheet activates the contact button, and the alarm is activated by the contact button to alert the staff that a certain fiber thread is broken. The drawing steam treatment device can automatically monitor and warn whether each carbon fiber is broken when steam drawing the carbon fiber, which solves the problem that the existing drawing steam device will steam draw multiple carbon fibers at the same time for processing efficiency. Since the carbon fibers are closely arranged, it is difficult for the staff to monitor the drawing conditions of each carbon fiber for a long time. If the carbon fiber breaks during drawing, it is difficult for the staff to get the warning and deal with it in the first time. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 For this application Figure 1 Another perspective structural diagram of; Figure 3 For this application Figure 1 A rear view structural diagram of ; Figure 4 A schematic diagram of the structure of the subject of this application; Figure 5 For this application Figure 4 A rear view structural diagram of ; Figure 6 This is a schematic diagram of the structure of the head and tail transmission parts of this application; Figure 7 This is a schematic diagram of the structure of the drafting roller of this application; Figure 8 For this application Figure 7 A schematic cross-sectional structure diagram of ; Fig. 9 This is a schematic diagram of the structure of the steam delivery rack for this application; Fig.10 This is a schematic diagram of the structure of the steam heating module of this application; Fig.11 For this application Fig.10 Schematic diagram of the structure viewed from above; Fig.12 For this application Fig.10 A schematic cross-sectional structure diagram of ; Fig.13 This is a schematic diagram of the structure of the exhaust shell of this application; Fig.14 For this application Fig.13 Schematic diagram of the structure viewed from above; Fig.15 This is a schematic diagram of the structure of the gas transmission pipe fittings for this application; Fig.16 This is a schematic diagram of the structure of the receiving shell of this application; Fig.17 This is a schematic diagram of the structure of the gas and heat distribution of this application; Fig.18 For this application Fig.17 Schematic diagram of the separation structure; Fig.19 For this application Fig.18 Another perspective structural diagram of; Fig. 20 This is a schematic diagram of the structure of the monitoring module of this application; Fig.21 For this application Fig. 20 A schematic diagram of the structure at A; Fig. 22 For this application Fig. 20 Another perspective structural diagram of; Fig.23 For this application Fig. 22 Schematic diagram of the structure at B; Fig.24 This is a schematic diagram of the structure of the front end of the gas storage part of this application; Fig.25 This is a schematic diagram of the structure of the transmission part of this application.

[0015] In the figure: 1, main body; 11, base; 12, box shell; 13, first drive unit; 14, second drive unit; 15, alarm; 16, control panel; 2, drafting roller; 21, roller body; 22, cavity; 23, ring channel; 24, through port; 25, ring groove; 3, head and tail transmission unit; 31, fixed seat; 32, transmission roller; 33, branching frame; 4, fiber thread; 5, steam transmission frame; 51, ring shell; 52, rail ring; 53, series pipe; 54, exhaust hole; 6, steam adding pipe; 7, steam heating module; 71, transmission Gas pipe parts; 72, transfer shell; 73, push rod; 74, exhaust shell; 75, support plate; 76, soft belt; 77, folded pipe; 78, receiving shell; 79, gas and heat division; 791, steam transport shell; 792, rail shell; 793, rail; 794, cover plate; 8, monitoring module; 81, base plate; 82, gas chamber part; 821, chamber shell; 822, elastic belt; 823, elastic sheet; 83, folding block; 84, contact button; 85, transmission part; 851, arm; 852, pressure block; 853, wheel shell; 854, guide wheel. DETAILED DESCRIPTION

[0016] See also Figure 1-25 , this application provides a technical solution: A large-tow carbon fiber drafting steam treatment device comprises a drafting roller 2, a head-to-tail transmission part 3, a fiber filament 4, a steam conveying frame 5, a steam adding pipe 6, a steam heating module 7, a monitoring module 8 and a main body 1, wherein the main body 1 comprises a base 11, a box shell 12 is fixedly connected to the upper side of the base 11, a first driving part 13 is installed in the upper side opening of the box shell 12, a second driving part 14 is installed in the lower side opening of the box shell 12, a control panel 16 is installed on the left side of the box shell 12, the front end of the front output shaft of the first driving part 13 and the second driving part 14 are fixedly connected to the drafting roller 2, the drafting roller 2 comprises a roller body 21, a cavity 22 is opened on the inner side of the roller body 21, and a front end of the roller body 21 is provided with a cavity 22. There are annular channels 23 on both sides of the rear, and openings 24 are connected between the cavity 22 and the annular channels 23. Annular grooves 25 are provided on the outer sides of the annular channels 23. Steam conveying racks 5 are installed on both sides of the front and rear of a group of drafting rollers 2. The steam conveying rack 5 includes a rail ring 52 rotatably connected to the annular groove 25. The inner side of the rail ring 52 is fixedly connected to an annular shell 51 on the inner side of the annular channel 23. A series pipe 53 is connected between a group of annular shells 51. An exhaust hole 54 is provided in the upper left annular shell 51 of the front steam conveying rack 5. The left part of the lower left annular shell 51 of the rear steam conveying rack 5 is connected to a steam adding pipe 6. The head and tail transmission parts 3 are installed on both sides of the front end surface of the box shell 12. The upper left annular shell 51 is connected to the left side of the steam conveying rack 5. A steam heating module 7 is installed on the upper part of the shell 51, and the fiber thread 4 passes through a group of head and tail transmission parts 3 and the steam heating module 7 and bypasses a group of drafting rollers 2. The steam heating module 7 includes a gas delivery pipe 71 fixedly connected to the exhaust hole 54, and the upper tube of the gas delivery pipe 71 is fixedly connected to the transfer shell 72. The left hole position of the transfer shell 72 is slidably connected with a push rod 73, and the lower side of the transfer shell 72 is fixedly connected to an exhaust shell 74, and the front and rear sides of the lower part of the exhaust shell 74 are fixedly connected with a support plate 75, and the lower end of the support plate 75 is fixedly connected to the annular shell 51, and the left and right sides of the lower part of the exhaust shell 74 are fixedly connected with a soft belt 76 on the upper side of the fiber thread 4. The front support plate 7 5 is fixedly connected with a folded tube 77, the upper end of the folded tube 77 is connected with a receiving shell 78 located at the lower side of the exhaust shell 74, the lower end of the folded tube 77 is installed with a gas-heating division 79 sleeved on the outer side of the fiber thread 4, the gas-heating division 79 includes a steam delivery shell 791 connected with the lower end of the folded tube 77, the right end face of the steam delivery shell 791 is fixedly connected with a track shell 792 on both the front and rear sides, the right side of the track shell 792 is attached with a cover plate 794, the left end face of the cover plate 794 is fixedly connected with a rail 793 slidably connected to the track shell 792 on both the front and rear sides, and the steam heating module 7 is set to fully and fully steam preheat and post-heat the fiber thread 4 passing by;The first drive unit 13 is composed of a motor and a three-axis transfer case, and the second drive unit 14 is composed of a motor and a two-axis transfer case. The first drive unit 13, the second drive unit 14 and the control panel 16 are electrically connected. Through this arrangement, the first drive unit 13 and the second drive unit 14 can adjust the speed and direction through the control panel 16. The head and tail transmission unit 3 includes a fixed seat 31 fixedly connected to the front end surface of the box shell 12, and a group of two transmission rollers 32 are rotatably connected to the front side of the fixed seat 31. The front end surface of the fixed seat 31 is fixedly connected to a branch frame 33 located on the upper side of the transmission roller 32, and the branch frame 33 is composed of a base strip. and a group of spacers, the fiber threads 4 are all arranged between a group of transmission rollers 32, and the fiber threads 4 are all arranged between a group of spacers of the branching frame 33. Through this arrangement, a group of transmission rollers 32 of the head and tail transmission parts 3 arranged at the left and right positions can be used as the input and output ends to conduct the walking displacement of the fiber threads 4, and at the same time, the branching frame 33 can be used to divide each fiber thread 4; the steam conveying frame 5 is connected to the drafting roller 2, and through this arrangement, high-temperature water vapor can enter the drafting roller 2 through the steam conveying frame 5, and the gas transmission pipe 71 consists of a lower pipe, a middle pipe, an upper pipe, a group of branch pipes and a pipe fixed on the branch pipe The upper tube of the gas delivery pipe fitting 71 is connected to a group of branch pipes. A cross slit is provided on the inner side of the elastic baffle of the gas delivery pipe fitting 71. Through this arrangement, the elastic baffle can limit the exhaust of the branch pipes of the gas delivery pipe fitting 71. The upper tube of the gas delivery pipe fitting 71 needs to be filled with gas and the air pressure needs to be increased before the elastic baffles in each branch pipe can be opened and discharged at the same time, so that the branch pipes of the gas delivery pipe fitting 71 can discharge an equal high-temperature steam flow; five groups of through holes are equidistantly arranged on the inner side of the curved surface of the exhaust shell 74, the upper curved surface of the receiving shell 78 fits with the lower curved surface of the exhaust shell 74, and the receiving shell 78 and the exhaust shell The three middle through holes of 74 are connected, the steam delivery shell 791 is composed of a shell, a wire groove and a through hole opened at the wire groove, the fiber wires 4 are all arranged in the wire groove of the steam delivery shell 791, and the fiber wires 4 are all arranged between the steam delivery shell 791 and the cover plate 794. Through this arrangement, the high-temperature water vapor discharged through the through holes of the steam delivery shell 791 can be used to heat the fiber wires 4 passing through the wire groove of the steam delivery shell 791 with high-temperature water vapor. There is a gap between the fiber wires 4 and the steam delivery shell 791 and the cover plate 794. Through this arrangement, the walking displacement of the fiber wires 4 does not contact the steam delivery shell 791 and the cover plate 794. ;

[0017] like Figure 1 , Fig.10 , Fig.12 , Fig.15 , Figure 20-Figure 25As shown, an alarm 15 is installed on the upper side of the box shell 12, and a monitoring module 8 is installed on the left side of the steam heating module 7. The monitoring module 8 includes a base plate 81 fixedly connected to the left side of the exhaust shell 74, and the right end face of the vertical plate of the base plate 81 is fixedly connected to the gas storage part 82. The gas storage part 82 includes a storage shell 821, and an elastic band 822 is fixedly connected in the right opening of the storage shell 821. An elastic sheet 823 is fixedly connected in the front circular opening of the storage shell 821. A folding block 83 is fixedly connected to the front side of the vertical plate of the base plate 81, and a treatment device is installed on the rear end face of the folding block 83. The contact button 84 on the front side of the elastic sheet 823 and the transmission part 85 are installed in the horizontal plate rotation groove of the base plate 81. The transmission part 85 includes an arm 851 rotatably connected to the horizontal plate rotation groove of the base plate 81, a pressure block 852 is fixedly connected to the upper left side of the arm 851, and a wheel shell 853 is fixedly connected to the lower end of the arm 851. The inner side of the wheel shell 853 is rotatably connected to a guide wheel 854 that fits the fiber thread 4. Through this arrangement, the monitoring module 8 can automatically detect whether each fiber thread 4 is out of steam when the fiber thread 4 is steam-drawn. The pressure block 852 is fitted with the elastic band 822. Through this arrangement, the pressure block 852 after displacement can squeeze the elastic band 822. The arm 851 and the push rod 73 are both arranged to be aligned horizontally to the left and right. Through this arrangement, the push rod 73 can push the arm 851 to rotate after displacement. The push rod 73 and the branch pipe of the gas pipe fitting 71 are both arranged to be aligned horizontally to the left and right. Through this arrangement, the high-temperature water vapor airflow discharged from the branch pipe of the gas pipe fitting 71 can push the push rod 73 to move. The thickness of the elastic band 822 is It is larger than the thickness of the elastic sheet 823, and a gap is set between the elastic sheet 823 and the contact button 84. Through this arrangement, it can be seen that since the thickness of the elastic sheet 823 is thinner than the thickness of the elastic belt 822, the elastic sheet 823 will first be deformed and convex after the air is squeezed; the contact button 84 and the alarm 15 are electrically connected, and the fiber threads 4 are all set on the lower side of the guide wheel 854, and the fiber threads 4 are all fitted with the wheel groove of the guide wheel 854. Through this arrangement, the transmission part 85 is in rotational contact with the fiber threads 4 through the guide wheel 854.

[0018] Working process: large tow carbon fiber is made of carbon fiber precursor, and the steam drawing operation of the drawing steam treatment device on the carbon fiber precursor, i.e., the fiber thread 4, is as follows. Note 1: the electrical appliances in this scheme are all powered by external power, and the first drive unit 13 and the second drive unit 14 adjust the speed and direction through the control panel 16, and the steam adding pipe 6 is connected to the external high-temperature steam supply pipeline; Note 2: a group of transmission rollers 32 of the head and tail transmission parts 3 set at the left and right positions can be used as the input and output ends to conduct the walking displacement of the fiber thread 4, and at the same time, each fiber thread 4 can be divided by the set branching frame 33; Note 3, since each ring shell 51 is connected by a plurality of series pipes 53, the steam conveying frame 5 is an interconnected structure, and since the ring shell 51 and the track ring 5 2 is rotatably connected with the annular groove 25 and the annular channel 23 of the drafting roller 2, so the annular shell 51 of the steam conveying frame 5 can convey gas to the rotating drafting roller 2; Note 4: The exhaust of the branch pipes of the gas delivery pipe 71 can be restricted by the elastic baffles provided, and the gas inside the upper tube of the gas delivery pipe 71 needs to be filled with gas and the air pressure increases before the elastic baffles in each branch pipe can be opened and discharged at the same time, so that the branch pipes of the gas delivery pipe 71 can discharge an equal high-temperature water vapor flow; Note 5: The cover plate 794 can be removed from the steam delivery shell 791 through the rail 793 and the rail shell 792. The high-temperature water vapor can be restricted to the wire groove of the steam delivery shell 791 by the provided cover plate 794, so that the concentration of high-temperature water vapor at the wire groove of the steam delivery shell 791 is maintained at a high level;By adjusting the control panel 16, the first driving part 13 and the second driving part 14 of the main body 1 can control the upper and lower drafting rollers 2 to rotate at different speeds and in different directions, so that the fiber threads 4 in contact with them can obtain a greater drafting force during the walking process. At this time, water vapor is transported to the rear steam conveying frame 5 through the steam adding pipe 6, so that the steam conveying frame 5 can transport high-temperature water vapor to the rotating drafting roller 2, and the high-temperature water vapor passing through the drafting roller 2 can heat and increase the temperature of the outer surface of the roller body 21, so that the roller body 21 heats the contacted fiber threads 4, so that the fiber threads 4 can be stretched by heat in cooperation with the drafting force. On the other hand, the water vapor passing through the drafting roller 2 will converge into the front steam conveying frame 5, and then be transported to the intermediate shell 72 through the gas delivery pipe 71, and discharged from the exhaust shell 74 on the lower side of the intermediate shell 72. The exhaust shell 74 will discharge part of the high-temperature water vapor directly to a group of soft belts 76 and a The fiber threads 4 traveling on the lower side of the soft belt 76 are preheated with high-temperature water vapor between the supporting plates 75, and another part of the high-temperature water vapor is discharged into the receiving shell 78 through the middle through hole of the exhaust shell 74, and is transported to the steam conveying shell 791 of the gas-heating division 79 through the folded pipe 77. This part of the high-temperature water vapor can be discharged through the through hole of the steam conveying shell 791, so that the high-temperature water vapor can perform high-temperature water vapor post-heating on the fiber threads 4 passing through the line groove of the steam conveying shell 791. After the fiber threads 4 are preheated and post-heated with high-temperature water vapor, the supersaturated water vapor can be used as a drawing medium, so that the high-pressure and high-temperature water molecules can penetrate into the fiber threads 4 to produce hydrogen bonds, thereby achieving a plasticizing effect, ensuring the quality of the fiber threads 4 after steam drawing, so that the drawing steam treatment device can simultaneously draw and fully and fully heat the carbon fiber with high-temperature water vapor with the space occupied by a single device;The monitoring operation of the carbon fiber is as follows: the transmission part 85 of the monitoring module 8 is set on the upper side of the moving fiber thread 4 (the transmission part 85 is in rotational contact with the fiber thread 4 through the guide wheel 854, and the thrust of the transmission part 85 by the push rod 73 and the high-temperature water vapor airflow is relatively small, which will not cause adverse effects on the subsequent high-tension stretching of the fiber thread 4). If the fiber thread 4 is not broken, the transmission part 85 will maintain an unchanged angle due to the limitation of the fiber thread 4. If the fiber thread 4 is broken during the stretching process, the transmission part 85 that loses the limitation will rotate counterclockwise due to the influence of gravity and become vertical. At the same time, the high-temperature water vapor flow discharged from the corresponding branch of the gas transmission pipe 71 will push the corresponding push rod 73 to move to the left, and the push rod The leftward displacement of 73 can further push the arm 851 of the transmission part 85 to rotate counterclockwise, so that the pressing block 852 of the transmission part 85 squeezes the elastic band 822 of the air storage part 82, and the squeezing of the elastic band 822 squeezes the air in the air storage part 82. Since the thickness of the elastic sheet 823 is thinner than the thickness of the elastic band 822, the squeezed air will first cause the elastic sheet 823 to deform and bulge outward, so that the bulged elastic sheet 823 activates the contact button 84, and the alarm 15 is activated by the contact button 84 to alarm, reminding the staff that a certain fiber thread 4 is broken, so that the drafting steam treatment device can automatically monitor and warn whether each carbon fiber is broken when steam drafting the carbon fiber. ;

[0019] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and its core ideas of this application. The above are only preferred implementation methods of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the application to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A large-tow carbon fiber drafting steam treatment device, comprising a drafting roller (2), a head and tail transmission part (3), a fiber thread (4), a steam conveying frame (5), a steam adding pipe (6), a steam heating module (7), a monitoring module (8) and a main body (1), characterized in that: The main body (1) comprises a base (11), the upper side of the base (11) is fixedly connected to a box shell (12), a first driving unit (13) is installed in the upper side opening of the box shell (12), a second driving unit (14) is installed in the lower side opening of the box shell (12), a control panel (16) is installed on the left side of the box shell (12), front ends of the front output shafts of the first driving unit (13) and the second driving unit (14) are fixedly connected to a drafting roller (2), the drafting roller (2) comprises a roller body (21), a cavity (22) is provided on the inner side of the roller body (21), a ring channel (23) is provided on the front and rear sides of the roller body (21), a through opening (24) is connected between the cavity (22) and the ring channel (23), and an annular groove (25) is provided on the outer side of the ring channel (23), and a group of the drafting rollers (2) are connected to each other. ) are both installed with steam conveying racks (5) on both the front and rear sides, the steam conveying rack (5) comprising a rail ring (52) rotatably connected to the annular groove (25), the inner side of the rail ring (52) is fixedly connected to an annular shell (51) located on the inner side of the annular channel (23), a group of the annular shells (51) are connected with a series pipe (53), an exhaust hole (54) is opened in the upper left annular shell (51) of the front steam conveying rack (5), and a steam supply pipe (6) is connected to the left part of the lower left annular shell (51) of the rear steam conveying rack (5), the front end surface of the box shell (12) is both installed with head and tail transmission parts (3) on both sides, and the upper part of the upper left annular shell (51) is installed with a steam heating module (7), and the fiber thread (4) passes through a group of head and tail transmission parts (3) and the steam heating module (7) and bypasses a group of drafting rollers (2).

2. A large-tow carbon fiber drafting steam treatment device according to claim 1, characterized in that: The steam heating module (7) comprises a gas delivery pipe (71) fixedly connected to the exhaust hole (54); the outer portion of the upper pipe of the gas delivery pipe (71) is fixedly connected to a transfer shell (72); a push rod (73) is slidably connected to the left hole of the transfer shell (72); the lower side of the transfer shell (72) is fixedly connected to an exhaust shell (74); the front and rear sides of the lower part of the exhaust shell (74) are fixedly connected to support plates (75); the lower ends of the support plates (75) are fixedly connected to the annular shell (51); the left and right sides of the lower part of the exhaust shell (74) are fixedly connected to soft belts (76) located on the upper side of the fiber threads (4); the front side of the support plates (75) are fixedly connected to the upper side of the fiber threads (4); A folded tube (77) is fixedly connected in the hole, the upper end of the folded tube (77) is connected to a receiving shell (78) located at the lower side of the exhaust shell (74), the lower end of the folded tube (77) is provided with a gas-heating section (79) sleeved on the outside of the fiber thread (4), the gas-heating section (79) comprises a steam transport shell (791) connected to the lower end of the folded tube (77), the right end face of the steam transport shell (791) is fixedly connected to a rail shell (792) on both the front and rear sides, the right side of the rail shell (792) is attached to a cover plate (794), and the left end face of the cover plate (794) is fixedly connected to a rail bar (793) slidably connected to the rail shell (792) on both the front and rear sides.

3. A large-tow carbon fiber drafting steam treatment device according to claim 2, characterized in that: The first drive unit (13) is composed of a motor and a three-axis transfer case, and the second drive unit (14) is composed of a motor and a two-axis transfer case. The first drive unit (13), the second drive unit (14) and the control panel (16) are electrically connected. The head-to-tail transmission unit (3) comprises a fixed seat (31) fixedly connected to the front end surface of the box shell (12), a group of two transmission rollers (32) being rotatably connected to the front side of the fixed seat (31), a line splitting frame (33) located on the upper side of the transmission rollers (32) being fixedly connected to the front end surface of the fixed seat (31), the line splitting frame (33) being composed of a base strip and a group of spacer strips, the fiber threads (4) are all arranged between the group of transmission rollers (32), and the fiber threads (4) are all arranged between the group of spacer strips of the line splitting frame (33).

4. The large-tow carbon fiber drafting steam treatment device according to claim 2, characterized in that: The steam delivery racks (5) are all connected to the drafting rollers (2); the gas delivery pipe fittings (71) are composed of a lower pipe, a middle pipe, an upper pipe, a group of branch pipes, and elastic baffles fixed in the branch pipes; the upper pipe of the gas delivery pipe fittings (71) is connected to the group of branch pipes; and a cross slit is provided on the inner side of the elastic baffle of the gas delivery pipe fittings (71).

5. The large-tow carbon fiber drafting steam treatment device according to claim 2, characterized in that: Five groups of through holes are equidistantly arranged on the inner side of the curved surface of the exhaust shell (74); the upper curved surface of the receiving shell (78) fits the lower curved surface of the exhaust shell (74); the receiving shell (78) is connected to the three middle groups of through holes of the exhaust shell (74); the steam transport shell (791) is composed of a shell, a wire groove and through holes opened in the wire groove; the fiber wires (4) are all arranged in the wire groove of the steam transport shell (791); the fiber wires (4) are all arranged between the steam transport shell (791) and the cover plate (794); and gaps are left between the fiber wires (4) and the steam transport shell (791) and the cover plate (794).

6. The large-tow carbon fiber drafting steam treatment device according to claim 2, characterized in that: An alarm device (15) is installed on the upper side of the box shell (12); a monitoring module (8) is installed on the left side of the steam heating module (7); the monitoring module (8) comprises a base plate (81) fixedly connected to the left side of the exhaust shell (74); a gas storage portion (82) is fixedly connected to the right end surface of the vertical plate of the base plate (81); the gas storage portion (82) comprises a storage shell (821); an elastic band (822) is fixedly connected to the right opening of the storage shell (821); an elastic sheet (823) is fixedly connected to the front circular opening of the storage shell (821); and a gas storage portion (823) is fixedly connected to the front side of the vertical plate of the base plate (81). A folding block (83) is fixedly connected, and a contact button (84) located on the front side of the elastic sheet (823) is installed on the rear end surface of the folding block (83), and a transmission part (85) is installed in the horizontal plate rotation groove of the base plate (81), and the transmission part (85) includes an arm rod (851) rotatably connected to the horizontal plate rotation groove of the base plate (81), a pressure block (852) is fixedly connected to the upper left side of the arm rod (851), and a wheel shell (853) is fixedly connected to the lower end of the arm rod (851), and a guide wheel (854) that fits the fiber thread (4) is rotatably connected to the inner side of the wheel shell (853).

7. A large-tow carbon fiber drafting steam treatment device according to claim 6, characterized in that: The pressing blocks (852) are all fitted with the elastic bands (822), the arm rods (851) and the push rods (73) are all arranged to be aligned horizontally left and right, the push rods (73) and the branch pipes of the gas delivery pipe (71) are all arranged to be aligned horizontally left and right, the thickness of the elastic bands (822) is greater than the thickness of the elastic sheet (823), and a gap is provided between the elastic sheet (823) and the contact button (84).

8. The large-tow carbon fiber drafting steam treatment device according to claim 6, characterized in that: The contact button (84) and the alarm (15) are electrically connected, and the fiber threads (4) are all arranged on the lower side of the guide wheel (854), and the fiber threads (4) are all fitted with the wheel groove of the guide wheel (854).

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