A short fiber crimping machine with visual and controllable functions

Abstract

This utility model relates to a short fiber crimping machine with visual and controllable functions, including an upper crimping roller, a lower crimping roller, and a crimping box. The crimping box includes an upper crimping blade and a lower crimping blade respectively disposed at the rear ends of the upper and lower crimping rollers, and also includes two sets of side plates. The two sets of side plates, the upper crimping blade, and the lower crimping blade together enclose a crimping cavity for accommodating short fibers. The upper crimping blade includes a crimping blade base and a crimping blade body. One end of the crimping blade body is hinged to the crimping blade base on the side facing the lower crimping blade, and the other end of the crimping blade body is configured to move towards or away from the lower crimping blade. The short fiber crimping machine provided by this utility model can flexibly adjust the structure of the crimping cavity according to the fiber type, making it suitable for multiple types of fibers, including high-performance fibers. Through pressure monitoring, angle adjustment, and visual verification, a closed-loop control structure is formed, effectively improving the crimping quality.

Description

Technical Field

[0001] This utility model relates to the field of chemical fiber crimping machine technology, specifically a short fiber crimping machine with visual and controllable functions. Background Technology

[0002] In staple fiber production lines, the main purpose of the crimping process is to give the fibers better bulkiness, softness, and elasticity, increase the cohesion between fibers, improve the spinnability of the fibers, and enhance their performance and appearance. Therefore, the crimping machine is a key piece of equipment in the chemical fiber staple fiber production line, and its crimping effect directly affects the quality of the filament bundle.

[0003] Currently, fiber crimping is mostly achieved using a crimping box method. The crimping principle is as follows: a fiber bundle of a certain thickness is preheated with steam and fed into a crimping box via a pair of actively rotating crimping rollers. The movable plate of the upper crimping knife in the crimping box can swing, and a cylinder applies pressure to the fiber bundle inside the crimping box through this movable plate. The crimping rollers continuously feed the fiber bundle into the box until it is full. Due to the resistance generated by the movable plate on the movement of the fiber bundle, the fibers are squeezed together inside the box, causing crimping. Furthermore, due to the pushing force of the crimping rollers, the crimped fiber bundle is continuously pushed out of the crimping box.

[0004] To achieve optimal crimping performance, the main pressure of the crimping roller and the back pressure of the crimping box can be adjusted to ensure uniform crimping of the fiber bundle and meet the quality requirements. However, current crimping machines are primarily suitable for conventional polyester fibers such as polyester. Research on crimping high-strength, high-modulus, low-elongation, and difficult-to-crain fibers such as para-aramid is limited. Furthermore, short fibers prepared using traditional crimping machines often exhibit poor crimping and spinnability, or result in acceptable crimping but significant fiber strength loss. Therefore, there is an urgent need to optimize the existing short fiber crimping process for high-performance fibers and address issues such as the delayed evaluation process, which requires the fibers to be removed from the crimping box before evaluation can be conducted. This will improve the application and promotion of high-performance fiber products. Utility Model Content

[0005] The purpose of this invention is to provide a short fiber crimping machine with visual and controllable functions, so as to at least partially solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a short fiber crimping machine with visible and controllable functions, comprising an upper crimping roller, a lower crimping roller, and a crimping box. The crimping box includes an upper crimping blade and a lower crimping blade respectively disposed at the rear ends of the upper and lower crimping rollers, and also includes two sets of side plates. The two sets of side plates and the upper and lower crimping blades together form a crimping cavity for accommodating short fibers. The upper crimping blade includes a crimping blade base and a crimping blade body. One end of the crimping blade body is hinged to the crimping blade base on the side facing the lower crimping blade, and the other end of the crimping blade body is configured to move towards or away from the lower crimping blade.

[0007] In a preferred embodiment, one end of the curling blade body is provided with a generally cylindrical adapter post, and the corresponding side of the curling blade base is provided with an adapter locking groove that matches the shape of the adapter post, and the adapter post is rotatably connected in the adapter locking groove.

[0008] In a preferred embodiment, the rotation axis of the adapter post is parallel to the axis of the upper or lower crimping roller, so that the swing plane of the upper crimping knife is perpendicular to the fiber travel direction, ensuring that the filament bundle is subjected to a compressive force perpendicular to the fiber axis in the crimping cavity.

[0009] In a preferred embodiment, the crimping blade base has at least two sets of threaded holes distributed along the fiber travel direction, through which countersunk bolts are connected, with the bottom of the countersunk bolts abutting against the crimping blade body. By tightening the countersunk bolts, the crimping blade body can be pushed downward and rotated, thereby adjusting the distance and angle between the crimping blade body and the lower crimping blade.

[0010] In a preferred embodiment, a pressure sensor is also connected between the bottom of the countersunk bolt and the coiling cutter body. By monitoring the pressure sensor, the back pressure and the pressure inside the coiling cavity can be determined, and the main pressure transmission can be monitored.

[0011] In a preferred embodiment, the countersunk bolts and the corresponding pressure sensors are each set in three groups, spaced apart.

[0012] In a preferred embodiment, the side plate is detachably connected to the lower coiling blade.

[0013] In a preferred embodiment, the side plate is made of a transparent material to enable visibility, so as to monitor the fiber curling process and curling state in the curling cavity and to adjust the process accordingly.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The short fiber crimping machine with visual and controllable functions provided by this utility model sets the upper crimping knife as a split structure with adjustable angle, and combines it with the visual structure of the side plate and the multi-segment pressure monitoring structure. It can flexibly adjust the structure of the crimping cavity according to the fiber type, making it suitable for multiple types of fibers, including high-performance fibers. Through pressure monitoring, angle adjustment and visual verification, a closed-loop control structure is formed, which effectively improves the crimping quality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the short fiber crimping machine with visual and controllable functions in this embodiment of the present invention;

[0017] Figure 2 This is a left view of the short fiber crimping machine with visual and controllable functions in an embodiment of this utility model;

[0018] Figure 3 This is a partial structural diagram of the short fiber crimping machine in an embodiment of the present invention (the crimping blade body is in its initial state);

[0019] Figure 4 This is a partial structural diagram of the short fiber crimping machine in an embodiment of the present invention (the crimping blade body is in a rotating state);

[0020] Figure 5 This is a schematic diagram of the structure of the curling blade base and the curling blade body in the embodiment of this utility model.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Upper winding roller; 2. Lower winding roller; 3. Upper winding blade; 31. Winding blade base; 311. Adapter lock groove; 32. Winding blade body; 321. Adapter column; 4. Lower winding blade; 5. Side plate; 6. Winding cavity; 7. Back pressure; 8. Movable plate; 9. Countersunk bolt; 10. Pressure sensor; 11. Connecting parts. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] See Figures 1-2 This embodiment discloses a short fiber crimping machine with visual and controllable functions, including an upper crimping roller 1, a lower crimping roller 2, and a crimping box. The crimping box includes an upper crimping knife 3 and a lower crimping knife 4 respectively disposed at the rear ends of the upper crimping roller 1 and the lower crimping roller 2, and also includes two sets of side plates 5. The two sets of side plates 5 are connected to the lower crimping knife 4 by connectors 11, and together with the upper crimping knife 3 and the lower crimping knife 4, they enclose a crimping cavity 6 for accommodating short fibers. After the fiber bundle is preheated by steam, it is fed into the crimping cavity 6 through the cooperation of the upper crimping roller 1 and the lower crimping roller 2.

[0026] In this embodiment, the side plate 5 is detachably connected to the lower coiling blade 4 and can be disassembled at any time according to actual application needs. For example, the side plate 5 can be replaced with one of different materials to accommodate different fiber materials. For instance, the connector 11 can be a fastening bolt that is easy to disassemble.

[0027] In this embodiment, the side plate 5 is made of a transparent material, enabling it to be visible and allowing for monitoring of the fiber curling process and state within the curling cavity 6, as well as adaptive process control. Preferably, the side plate 5 is made of a high-temperature resistant and high-transmittance engineering plastic, allowing it to withstand the high temperature and pressure during curling. Exemplary materials include PET (polyterephthalic acid), PC (polycarbonate), PES (polyethersulfone), and PPSU (polyphenylene sulfone), which have a temperature resistance exceeding 300°C and a light transmittance exceeding 90%. In other embodiments, such as... Figure 1 and Figure 2 As shown, the side plate 5 corresponding only to the position of the curling cavity 6 can also be set to a transparent state, while the other side plates 5 are made of metal materials such as steel.

[0028] The top of the upper coiling blade 3 is provided with a back pressure 7 for driving its movement. Specifically, the top of the upper coiling blade 3 is detachably connected to a movable plate 8 by bolts. The movable plate 8 is hinged to the upper coiling roller 1 and driven by the back pressure 7 at the top. The movable plate 8 and the back pressure 7 driving structure adopt existing technology.

[0029] See Figures 3-4In this embodiment, the upper curling blade 3 and the lower curling blade 4 have roughly the same structure, and the upper curling blade 3 further includes a curling blade base 31 and a curling blade body 32 movably connected to the curling blade base 31. The curling blade body 32 is connected to the curling blade base 31 on the side facing the lower curling blade 4.

[0030] Specifically, in combination Figure 5 In the upper coiling blade 3, the main body of the coiling blade body 32 is attached to the coiling blade base 31, and one end of the coiling blade body 32 is provided with a roughly cylindrical adapter post 321. Correspondingly, the corresponding side of the coiling blade base 31 is provided with an adapter locking groove 311 that matches the shape of the adapter post 321. The adapter post 321 is rotatably connected in the adapter locking groove 311, so that the distance and angle between the coiling blade body 32 and the lower coiling blade 4 can be changed by rotating the coiling blade body 32. It should be noted that there should be a certain preload between the adapter locking groove 311 and the adapter post 321 so that the coiling blade body 32 can have stability in the free state. When an external force is applied to the coiling blade body 32, it can be driven to rotate. For example, the adapter locking groove 311 and the adapter post 321 can be used with an interference fit, or a plastic bushing with a certain elasticity can be attached in the adapter groove so that the adapter post 321 and the adapter locking groove 311 form a tight fit.

[0031] In this embodiment, the rotation axis of the adapter post 321 should be parallel to the axis of the crimping roller, so that the swing plane of the upper crimping knife 3 is perpendicular to the fiber travel direction, ensuring that the filament bundle is subjected to a compressive force perpendicular to the fiber axis in the crimping cavity 6.

[0032] Furthermore, the upper crimping blade 3's crimping blade base 31 is provided with at least two sets of threaded holes distributed along the fiber travel direction. Each threaded hole is constructed as a through hole along the height direction of the crimping blade base 31. A countersunk bolt 9 is connected through the threaded hole, and the bottom of the countersunk bolt 9 abuts against the crimping blade body 32. By changing the screwing depth of the countersunk bolt 9, the crimping blade body 32 can be pushed downward and rotated, thereby adjusting the distance and angle between the crimping blade body 32 and the lower crimping blade 4, that is, adjusting the spatial structure of the crimping cavity 6. When the operation is completed or when it is necessary to change the fiber type, the crimping blade body 32 can be manually adjusted and reset.

[0033] Furthermore, in this embodiment, a pressure sensor 10 is also connected between the bottom of the countersunk bolt 9 and the coiling cutter body 32. During the adjustment of the back pressure 7, the pressure sensor 10 can be monitored in real time to understand the back pressure 7 and the pressure inside the coiling cavity 6, monitor the main pressure transmission, explore the correspondence between the production process and the finished product state, and verify the feasibility of the process. For example, the pressure sensor 10 can be a thin-film pressure sensor 10, which can be embedded and fixed on the coiling cutter body 32, directly contacting the bottom of the countersunk bolt 9.

[0034] Preferably, in this embodiment, the number of threaded holes and corresponding countersunk bolts 9 and pressure sensors 10 are all set in three groups and spaced apart, so as to realize three-point monitoring of pressure. By independently monitoring the curling pressure of the front, middle and rear sections in the curling cavity 6, the back pressure 7 is adaptively controlled so that the resistance and propulsion force of the filament bundle are matched, thereby accurately matching the curling process requirements of different fibers, avoiding fiber strength loss, and also accurately verifying the correspondence between the production process and the finished product state.

[0035] It is understood that the winding machine provided in this embodiment also includes a control module. Specifically, the control module may include a controller that can control multiple components such as the take-up roller and back pressure 7 according to a predetermined program and can be interlocked with the pressure sensor 10. The control method of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Therefore, this embodiment will not explain the specific control method in detail.

[0036] In practical applications, the angle of the upper crimping blade 3 and the distance between it and the lower crimping blade 4 corresponding to different fibers are verified in advance, and the posture of the upper crimping blade 3 is adjusted as expected. During operation, after the fiber bundle is preheated by steam, it is pushed into the crimping cavity 6 by the upper crimping roller 1 and the lower crimping roller 2. During the process, the fiber accumulation state is observed through the transparent side plate 5. Based on the three-stage pressure monitoring data, the cylinder output pressure of the back pressure 7 is adaptively adjusted to optimize the space of the crimping cavity 6 and improve the fiber crimping quality.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A short fiber crimping machine with visual and controllable functions, comprising an upper crimping roller (1), a lower crimping roller (2), and a crimping box, the crimping box comprising an upper crimping knife (3) and a lower crimping knife (4) respectively disposed at the rear ends of the upper crimping roller (1) and the lower crimping roller (2), and further comprising two sets of side plates (5), the two sets of side plates (5) and the upper crimping knife (3) and the lower crimping knife (4) together forming a crimping cavity (6) for accommodating short fibers, characterized in that: The upper curling blade (3) includes a curling blade base (31) and a curling blade body (32). One end of the curling blade body (32) is hinged to the curling blade base (31) on the side facing the lower curling blade (4), and the other end of the curling blade body (32) is configured to move toward or away from the lower curling blade (4).

2. The short fiber crimping machine with a visible controllable function according to claim 1, characterized in that, One end of the curling blade body (32) is provided with a generally cylindrical adapter post (321), and the corresponding side of the curling blade base (31) is provided with an adapter lock groove (311) that matches the shape of the adapter post (321). The adapter post (321) is rotatably connected in the adapter lock groove (311).

3. The short fiber crimping machine with a visible controllable function according to claim 2, characterized in that, The rotation axis of the adapter column (321) is parallel to the axis of the upper winding roller (1) or the lower winding roller (2).

4. The short fiber crimping machine with a visible controllable function according to claim 1, wherein The coiling blade base (31) is provided with at least two sets of threaded holes distributed along the fiber travel direction, and countersunk bolts (9) are connected through the threaded holes, with the bottom of the countersunk bolts (9) abutting against the coiling blade body (32).

5. The short fiber crimping machine with visual and controllable function according to claim 4, characterized in that, A pressure sensor (10) is also connected between the bottom of the countersunk bolt (9) and the coiling cutter body (32).

6. The short fiber crimping machine with a visible controllable function according to claim 4, wherein The countersunk bolts (9) and the corresponding pressure sensors (10) are each set in three groups, and are spaced apart.

7. The short fiber crimping machine with a visible controllable function according to claim 1, wherein The side plate (5) is detachably connected to the lower coiling blade (4).

8. The short fiber crimping machine with a visible controllable function according to claim 1, wherein The side panel (5) is made of transparent material.

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