Adjustable tentering device in coagulation bath

Abstract

The utility model discloses a kind of adjustable tentering roller devices in coagulation bath, it is characterized by comprising lifting assembly, mounting seat and guide roller;The lifting assembly has two groups, is respectively fixed in coagulation bath tank two sides;The opposite surface of two groups of lifting assembly is respectively fixedly connected with the mounting seat, and a plurality of annular grooves are provided on the surface of the guide roller, the width of each annular groove is uniformly linearly transitioned from wide to narrow, the two ends of the guide roller are rotatably connected with the mounting seat of two sides, and guide roller fixing device is provided on the mounting seat.The utility model equipment simple structure, easy operation, low manufacturing cost can freely and stably control the degree of coagulation bath in tow width, ensure that the consistency of tow in subsequent process, and it is convenient for operator to work with silk at this place, save labor cost, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of carbon fiber wet spinning technology, and in particular to an adjustable spreading roller device in a coagulation bath. Background Technology

[0002] Wet spinning of carbon fiber is a process for preparing carbon fiber precursors (carbon fiber filaments). Common precursors include polyacrylonitrile (PAN) and viscose-based fibers. After the polymer reacts in the polymerization section, a dopant solution is prepared. This solution undergoes processes such as demonolysis, degassing, and filtration before being transported to the spinning section for carbon fiber precursor preparation. In the spinning section, the dopant solution passes through metering pumps and filters, and is then extruded by spinnerets at each spinning station into thousands of fine monofilament bundles, which enter a coagulation bath (usually an aqueous solution of solvent, such as DMSO or DMAc). In the coagulation bath, the solvent in the dopant solution diffuses outwards, while the non-solvent (water) penetrates into the fiber interior, causing the polymer to precipitate and solidify.

[0003] Typically, after solidification, the filament bundles are redirected by a guide roller to change their direction, drawing the bundles from different spinning positions out of the liquid surface and guiding them in the same direction for subsequent washing, drawing, and other processes. Currently, the solidification bath is usually equipped with a long rod-shaped or roller-shaped device (made of glass or stainless steel and fixed to the side plate of the tank by welding or bolting) to complete the redirection.

[0004] Because the filament bundle needs to maintain tension throughout its operation, it experiences a compression effect as it passes through a long rod or roller device, causing individual filaments to spread out flat. To improve equipment space utilization, the spread filament bundles need to be wound up within a limited distance before proceeding to subsequent washing and drawing processes. During the winding up process, the distance between the filament bundles ejected from the center and edges of the spinneret and the winding up device differs, leading to deviations in individual filament lengths. This length difference causes tension fluctuations during washing, drawing, and oiling processes: longer filament bundles are prone to fuzzing due to relaxation, while shorter filament bundles are prone to breakage due to excessive stress, causing roller entanglement or even machine shutdown. Furthermore, under the same drawing conditions, filament bundles of different lengths will exhibit uneven thickness, resulting in inconsistent washing effects and oiling amounts, ultimately affecting the stability of product quality.

[0005] The solidification stage is the initial stage of the spinning process. At this time, the mechanical properties of the filament bundle are relatively weak. Repeated spreading and winding will damage its structure, which in turn will affect the quality of subsequent processes and the final product.

[0006] Therefore, in order to solve the above-mentioned technical problems, it is necessary to develop an adjustable spreading roller device to optimize the turning process of the filament bundle in the coagulation bath and improve production efficiency and product consistency. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an adjustable spreading roller device within the coagulation bath. This device allows for online adjustment of the width of the filament bundle after extrusion from the spinneret within the coagulation bath, thereby avoiding the problem of individual filament length differences caused by winding after the filament bundle exits the coagulation bath, ultimately improving the stability of product quality.

[0008] This utility model is achieved through the following technical solution: An adjustable spreading roller device in a coagulation bath includes a lifting assembly, a mounting base, and a guide roller. Two sets of lifting assemblies are fixed to both sides of the coagulation bath. The mounting bases are fixedly connected to the opposite surfaces of the two sets of lifting assemblies. Several annular grooves are provided on the surface of the guide roller, with the width of each annular groove transitioning linearly from wide to narrow. Both ends of the guide roller are rotatably connected to the mounting bases on both sides. A guide roller fixing device is provided on the mounting base.

[0009] The lifting assembly includes a frame, a lead screw installed on the top of the frame, a mounting base fixing plate threaded to the lower part of the lead screw, a guide rail inside the frame, and sliding blocks matching the guide rail at both ends of the mounting base fixing plate. The two ends of the mounting base fixing plate are slidably connected to the guide rail. By rotating the lead screw, the mounting base fixing plate is driven to slide up and down along the guide rail.

[0010] The mounting base includes a connecting plate, which is fixedly connected to the mounting base fixing plate. A circular block is fixed on the lower side of the connecting plate, and through holes are opened on the circular block and the connecting plate respectively for the guide roller to pass through. The two ends of the guide roller are installed in the through holes.

[0011] The guide roller fixing device includes a set screw, and a set screw hole is opened on the side of the circular block. The set screw hole communicates with the through hole. The set screw passes through the set screw hole to fix the guide roller so that the guide roller no longer rotates.

[0012] A groove is provided at one end of the guide roller, and an angle adjustment rod is provided inside the groove.

[0013] The guide roller has a diameter of 60-80mm, the annular groove has a depth of 10-20mm, and the width of the annular groove transitions uniformly and linearly from wide to narrow, with a width transition taper of (1:0.8)-(1:0.6). The number of annular grooves is the same as the number of spinning positions on the production line.

[0014] A shoulder is installed at one end of the lead screw.

[0015] Lifting and positioning: The lead screw-guide rail mechanism on both sides drives the mounting base to move up and down, so that the height of the guide roller can be adjusted online, which facilitates the matching of wire drawing and position.

[0016] Angle fine-tuning: By slightly tilting the guide roller axis with the angle adjustment rod, the contact angle between the filament bundle and the groove taper is changed, and the spread is finely adjusted.

[0017] Quick fixation: The set screw passes through the side hole of the circular block and tightens the guide roller, quickly locking the position and angle to prevent rotation.

[0018] Multi-spinning position matching: The number of annular grooves is consistent with the number of spinning positions to ensure that the width and tension of each spinning position are synchronized and uniform.

[0019] The advantages of this invention are: the equipment has a simple structure, is easy to operate, and has low manufacturing cost. Through the lifting assembly and angle adjustment rod, the online adjustment of the fiber bundle spread and height within the coagulation bath can be achieved. By adjusting the fiber bundle spread, this invention effectively solves the problem of fuzziness, avoiding fiber frizz caused by differences in the length of individual filaments. It also effectively solves the problem of fiber breakage, preventing breakage of individual filaments due to uneven length. Furthermore, it effectively solves the problem of subsequent drafting differences caused by uneven filament length, effectively solves the problem of fiber bundle thickness fluctuations caused by uneven drafting, and effectively solves the problem of product quality differences caused by fluctuations in subsequent process stages due to uneven fiber bundle thickness. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the first state structure of this utility model; Figure 2 This is a schematic diagram of the second state structure of this utility model. Figure 2 ; Figure 3 This is a schematic diagram of the mounting base structure of this utility model; Figure 4 This is an enlarged schematic diagram of the connection between the guide roller, mounting base, and lifting assembly of this utility model; Figure 5 This is a schematic diagram of the lifting component structure of this utility model; Figure 6 This is a top view of the present invention. Detailed Implementation

[0021] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0023] like Figure 1-6As shown, an adjustable spreading roller device in a coagulation bath includes a lifting assembly 1, a mounting base 2, and a guide roller 3. There are two sets of lifting assemblies 1, which are fixed on both sides of the coagulation bath 4 respectively. The mounting base 2 is fixedly connected to the opposite surfaces of the two sets of lifting assemblies 1 respectively. Several annular grooves 5 are provided on the surface of the guide roller 3. The width of each annular groove 5 transitions uniformly and linearly from wide to narrow. The two ends of the guide roller 3 are rotatably connected to the mounting bases 2 on both sides respectively. A guide roller fixing device is provided on the mounting base 2.

[0024] The lifting assembly 1 includes a frame 6, which is N-shaped. A lead screw 7 is mounted on the top of the frame 6, and a mounting base fixing plate 8 is threadedly connected to the lower part of the lead screw 7. Guide rails 9 are respectively provided on the left and right sides of the inner side of the frame 6. Sliding blocks matching the guide rails 9 are provided at both ends of the mounting base fixing plate 8. The two ends of the mounting base fixing plate 8 are slidably connected to the guide rails 9. By rotating the lead screw 7, the mounting base fixing plate 8 is driven to slide up and down along the guide rails 9, thereby adjusting the height of the guide roller 3. A handwheel can be provided for the lead screw 7 for easy rotation.

[0025] The mounting base 2 includes a connecting plate 10, which is fixedly connected to the mounting base fixing plate 8. A circular block 11 is fixed on the lower side of the connecting plate 10. A through hole is opened on the circular block 11 and the connecting plate 10 respectively, for the guide roller 3 to pass through. The two ends of the guide roller 3 are installed in the through hole.

[0026] The guide roller fixing device includes a set screw 12. A set screw hole is opened on the side of the circular block 11, and the set screw hole communicates with the through hole. The set screw 12 passes through the set screw hole to fix the guide roller 3, so that the guide roller 3 no longer rotates. It is easy to operate.

[0027] A groove is provided at one end of the guide roller 3, and an angle adjustment rod 13 is provided in the groove. The angle of the guide roller 3 is adjusted by rotating the guide roller 3 through the angle adjustment rod 13.

[0028] The guide roller 3 has a diameter of 60-80mm, the annular groove 5 has a depth of 10-20mm, the width of the annular groove 5 transitions uniformly and linearly from wide to narrow, and the width transition taper is (1:0.8)-(1:0.6). The number of annular grooves 5 is the same as the number of spinning positions on the production line.

[0029] A shoulder is installed at one end of the lead screw 7.

[0030] The sliding block and mounting base fixing plate are an 8-position integrated structure.

[0031] A threaded hole matching the lead screw 7 is opened at the center of the top of the mounting base fixing plate 8.

[0032] like Figure 1 , Figure 2 and Figure 6 As shown, this utility model ensures that the width of the filament bundle passing through this point can be adjusted online by using the different groove widths of the guide roller 3 at different angles.

[0033] refer to Figure 1 , Figure 3 , Figure 6 As shown, the two ends of the guide roller 3 are rotatably mounted in the mounting base 2, and the top screw 12 is mounted on the top of the mounting base 2.

[0034] refer to Figure 4 As shown, the guide roller 3 has a groove at its end with a diameter matching that of the angle adjusting rod 13. In practice, based on the required filament width, the guide roller 3 is adjusted to the appropriate angle using the angle adjusting rod 13, and then fixed using the set screw 12 to prevent it from rotating within the mounting base 2. After adjustment, the angle adjusting rod 13 is removed.

[0035] refer to Figure 1 , Figure 5 and Figure 6 As shown, the mounting seats 2 at both ends of the guide roller 3 are connected by bolts. Figure 5 The lifting assembly 1 shown.

[0036] refer to Figure 5 The lifting assembly 1 shown includes a frame 6, a mounting base fixing plate 8 and a lead screw 7. A guide rail 9 is provided inside the frame 6. The two ends of the mounting base fixing plate 8 slide on the guide rail 9. The mounting base fixing plate 8 serves as an intermediate transition structure and has two main functions: firstly, it connects the mounting base 2 to the lifting assembly 1 with bolts; secondly, it cooperates with the guide rail 9 to form a sliding guide rail 9 structure.

[0037] refer to Figure 5 As shown, the mounting base fixing plate 8 has a threaded hole in the middle, with the same thread specification as the lead screw 7. The top crossbeam of the guide rail 9 has a through hole, which allows the lead screw 7 to pass through smoothly. The top of the lead screw 7 has a shoulder.

[0038] refer to Figure 5 As shown, after the components are assembled, by coordinating the structures, turning the lead screw 7 clockwise from a top-view angle will raise the mounting base fixing plate 8. Turning the lead screw 7 counterclockwise from a top-view angle will lower the mounting base fixing plate 8.

[0039] The following are the specific methods for using the adjustable spreading roller device in this coagulation bath: 1. Adjust the angle of the guide rollers: refer to Figure 1 , Figure 2 and Figure 6As shown, the annular groove 5 on the guide roller 3 has different widths for the yarn bundle take-up at different angles. To utilize this structural feature of the guide roller 3, the required yarn bundle take-up width must first be determined, and the guide roller 3 is adjusted to the corresponding angle within the mounting base 2. Then, the guide roller 3 is fixed in place using the top screw 12.

[0040] 2. Adjust guide roller 3 to align with the corresponding filament bundle. refer to Figure 6 Top view of the device, Figure 5 From this perspective, there is a gap between the mounting base 2 and the guide roller 3, allowing the guide roller 3 to move up and down within a certain range. After adjusting the groove of the guide roller 3 to align with the filament bundle, tighten the top screw 12.

[0041] III. Adjusting the height of the device: refer to Figure 1 , Figure 2 and Figure 5 As shown, the lifting assembly 1 and the mounting base 2 are connected by bolts. The lifting assembly 1 can move up and down within a certain range through the cooperation between the mounting base fixing plate 8, the guide rail 9 and the lead screw 7, thereby driving the entire device to adjust its height.

[0042] When adjusting the height of the device, the lifting components 1 on both sides of the coagulation bath need to be adjusted simultaneously to achieve the best adjustment effect. Adjusting the height can adjust the wrap angle and tension of the filament bundle when it turns.

[0043] IV. Wire-carrying operation After adjusting the angle of guide roller 3 and the height of the device to the optimal state according to requirements, the filament feeding operation is ready. The filament bundle is extruded from the spinneret, passes through the annular groove 5 of guide roller 3, and enters the subsequent process section. After the filament feeding operation is completed, observe and confirm whether the winding width of guide roller 3 has reached the optimal level. If it has not reached the optimal effect, it can be adjusted online.

[0044] V. Online Adjustment During online adjustment, loosen the top wires 12 at both ends. Then, use the angle adjustment rod 13 to slowly adjust the angle of the guide roller 3 and observe the yarn bundle winding effect. After reaching the optimal value, retighten the top wires 12 and remove the angle adjustment rod 13.

[0045] According to this embodiment, the specific implementation method must be strictly followed in accordance with this process method, which can greatly improve product quality.

[0046] The above embodiments are merely illustrative of the technical solutions of this utility model and are not intended to limit it. The utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that many changes and variations can be made to these embodiments. The exemplary embodiments were chosen and described to explain the specific principles of this utility model and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments and various different choices and variations of this utility model. The scope of this utility model is intended to be defined by the claims and their equivalents.

Claims

1. An adjustable spreading roller device in a coagulation bath, characterized in that: It includes a lifting assembly, a mounting base, and a guide roller; there are two sets of lifting assemblies, which are fixed on both sides of the coagulation bath; the mounting bases are fixedly connected to the opposite surfaces of the two sets of lifting assemblies respectively; a number of annular grooves are provided on the surface of the guide rollers, and the width of each annular groove transitions uniformly and linearly from wide to narrow; the two ends of the guide rollers are rotatably connected to the mounting bases on both sides respectively; and a guide roller fixing device is provided on the mounting base.

2. The adjustable spreading roller device in a coagulation bath according to claim 1, characterized in that: The lifting assembly includes a frame, a lead screw installed on the top of the frame, a mounting base fixing plate threaded to the lower part of the lead screw, a guide rail inside the frame, and sliding blocks matching the guide rail at both ends of the mounting base fixing plate. The two ends of the mounting base fixing plate are slidably connected to the guide rail. By rotating the lead screw, the mounting base fixing plate is driven to slide up and down along the guide rail.

3. The adjustable spreading roller device in a coagulation bath according to claim 2, characterized in that: The mounting base includes a connecting plate, which is fixedly connected to the mounting base fixing plate. A circular block is fixed on the lower side of the connecting plate, and through holes are opened on the circular block and the connecting plate respectively for the guide roller to pass through. The two ends of the guide roller are installed in the through holes.

4. The adjustable spreading roller device in a coagulation bath according to claim 3, characterized in that: The guide roller fixing device includes a set screw, and a set screw hole is opened on the side of the circular block. The set screw hole communicates with the through hole. The set screw passes through the set screw hole to fix the guide roller so that the guide roller no longer rotates.

5. The adjustable spreading roller device in a coagulation bath according to claim 1, characterized in that: A groove is provided at one end of the guide roller, and an angle adjustment rod is provided inside the groove.

6. The adjustable spreading roller device in a coagulation bath according to claim 1, characterized in that: The guide roller has a diameter of 60-80mm, the annular groove has a depth of 10-20mm, and the width of the annular groove transitions uniformly and linearly from wide to narrow, with a width transition taper of (1:0.8)-(1:0.6). The number of annular grooves is the same as the number of spinning positions on the production line.

7. The adjustable spreading roller device in a coagulation bath according to claim 2, characterized in that: A shoulder is installed at one end of the lead screw.

Images