Vibration yarn spreading device and yarn spreading equipment

Abstract

The utility model relates to the field of fiber production, and discloses a vibration yarn spreading device and yarn spreading equipment. The vibration yarn spreading device comprises a first vibration mechanism, a second vibration mechanism and a third vibration mechanism, and the first vibration mechanism is arranged to be capable of forming vibration acting force perpendicular to the contact faces of the mechanisms and tows on the tows conducted by the first vibration mechanism. The second vibration mechanism is arranged to be capable of forming vibration acting force parallel to the width direction of the tows on the tows conducted by the second vibration mechanism, and the third vibration mechanism is arranged to be capable of forming vibration acting force in the front-back direction on the tows conducted by the third vibration mechanism. According to the vibration yarn spreading device, multiple vibration modes are combined, the vibration strength is high, the yarn spreading effect is good, the structure is simple, the design is compact, and the occupied space is small.

Description

Technical Field

[0001] This utility model relates to the field of fiber production, specifically to a vibrating yarn spreading device; further, this utility model relates to a yarn spreading equipment including the vibrating yarn spreading device. Background Technology

[0002] Large-tow carbon fibers have thicker bundles and a more concentrated distribution. During the oiling process, uneven oiling can cause some bundles to stick together. Due to this adhesion and tight distribution, the bundles are difficult to separate during pre-oxidation, leading to a large accumulation of localized heat that is difficult to release, potentially causing localized melting or even ignition. Furthermore, because of the large number of individual filaments, the thickness of the bundles, and their resistance to oxidation, the core-sheath problem is significant, a key factor limiting its mechanical properties. Therefore, in the production of large-tow carbon fibers, to reduce the localized heat accumulation caused by bundle adhesion and the concentrated bundles, it is necessary to spread the bundles to a wide extent.

[0003] CN219926984U discloses a composite material yarn spreading device including a mounting frame with two rows of spreading rollers, designated as an upper spreading roller and a lower spreading roller, arranged in a staggered manner. An ultrasonic vibrator is mounted on the upper spreading roller to achieve vertical vibration; the lower spreading roller is driven by a drive assembly to achieve horizontal oscillation, thus achieving radial oscillation. Under the combined action of the upper and lower spreading rollers, the fiber yarn bundle is spread wider, resulting in a lower areal density of the finished composite material, meeting production requirements. However, this spreading device only achieves vertical and horizontal oscillation of the yarn bundle, with a single vibration mode, a low upper limit of vibration frequency, and limited spreading effect.

[0004] CN108035030A provides a method for processing carbon fiber filaments, including the following steps: S1, tensioning and unfolding carbon fiber filaments; S2, impregnating the tensioned and unfolded carbon fiber filaments with a sizing agent; S3, heating the sizing agent-impregnated carbon fiber filaments through a heating block; S4, widening the heated carbon fiber filaments through a roller device; S5, winding the widened carbon fiber filaments. Compared with existing carbon fiber filament widening technologies, this technology first impregnates the carbon fiber filaments with a sizing agent to coat the surface with a protective layer before widening, effectively reducing fuzzing and filament breakage during widening, and greatly improving the wettability of the carbon fiber surface, thus fully preserving the excellent properties of the carbon fiber. However, the method of achieving filament widening through stress contact between the fiber and the bundle in step S1 results in an unsatisfactory widening effect, suitable only for small bundles and not directly applicable to large bundles.

[0005] Therefore, how to increase the width of the filament bundle after unwinding in order to achieve efficient unwinding of large filament bundles is an urgent problem to be solved. Utility Model Content

[0006] The purpose of this invention is to overcome the problem of unsatisfactory yarn spreading effect when using large yarn bundles in the existing technology, and to provide a vibrating yarn spreading device and yarn spreading equipment. This vibrating yarn spreading device uses a combination of multiple vibration modes, has high vibration intensity and good yarn spreading effect, and has a simple structure, compact design and small space occupation.

[0007] To achieve the above objectives, the first aspect of this utility model provides a vibrating yarn spreading device, which includes a first vibrating mechanism, a second vibrating mechanism, and a third vibrating mechanism. The first vibrating mechanism is configured to generate a vibrating force perpendicular to the contact surface between the mechanism and the yarn bundle on the yarn bundle it transmits. The second vibrating mechanism is configured to generate a vibrating force parallel to the width direction of the yarn bundle on the yarn bundle it transmits. The third vibrating mechanism is configured to generate a front-to-back vibrating force on the yarn bundle it transmits.

[0008] More preferably, the first vibration mechanism, the second vibration mechanism, and the third vibration mechanism are arranged sequentially according to the process steps.

[0009] More preferably, the vibrating yarn spreading device further includes a mounting frame with an inner cavity, wherein the first vibration mechanism, the second vibration mechanism and the third vibration mechanism are all located in the inner cavity.

[0010] In one embodiment, the first vibration mechanism includes a first yarn-spreading guide roller located in the mounting cavity and a first driving unit that drives the first yarn-spreading guide roller to vibrate. The two ends of the first yarn-spreading guide roller are connected to the side wall of the mounting cavity and form a vibration gap between them.

[0011] Preferably, the side wall of the mounting cavity is provided with a first mounting hole that matches both ends of the first yarn spreading guide roller, and an elastic washer is provided between the first yarn spreading guide roller and the first mounting hole; and / or, the first driving unit includes a first vibration motor and a first transmission component disposed inside the first yarn spreading guide roller, and the first vibration motor and the first yarn spreading guide roller are connected by transmission through the first transmission component.

[0012] More preferably, the first vibration motor is an eccentric vibration motor, and the elastic washer is a rubber washer.

[0013] Specifically, the second vibration mechanism includes a second yarn spreading guide roller located in the mounting cavity and a second drive unit for driving the second yarn spreading guide roller to perform axial reciprocating motion. The two ends of the second yarn spreading guide roller are connected to the side wall of the mounting cavity.

[0014] More specifically, the second drive unit includes a second vibration motor and a second transmission assembly. The second transmission assembly includes guide rail seats located on the outer sides of the shaft ends of the second yarn spreading guide roller and a crank push rod. The guide rail seats are connected to the side wall of the mounting cavity. The two ends of the roller shaft of the second yarn spreading guide roller are slidably connected to the corresponding guide rail seats. One end of the crank push rod is connected to the second vibration motor and the other end is connected to the roller shaft of the second yarn spreading guide roller, so that the second vibration motor drives the second yarn spreading guide roller to perform axial reciprocating motion along the guide rail seats through the crank push rod.

[0015] Typically, the rotation plane of the second vibrating motor is vertical and parallel to the roller shaft of the second yarn spreading guide roller; the crank push rod includes a first push rod and a second push rod, one end of the first push rod is connected to the rotating shaft of the second vibrating motor and the other end has a hollow portion extending along its axial direction, one end of the second push rod is slidably connected to the hollow portion and the other end is connected to the roller shaft of the second yarn spreading guide roller.

[0016] As another preferred embodiment, the third vibration mechanism includes a third yarn-spreading guide roller located in the mounting cavity and a third drive unit for driving the third yarn-spreading guide roller to perform reciprocating motion. The side wall of the mounting cavity is provided with elongated holes that are arranged opposite each other and extend in the front-back direction. The two ends of the third yarn-spreading guide roller are slidably connected to the elongated holes.

[0017] Preferably, the third drive unit includes a third vibration motor corresponding to both ends of the third yarn spreading guide roller and a third transmission assembly corresponding to the third vibration motor. The third transmission assembly includes a plate frame located outside the shaft end of the third yarn spreading guide roller and a gear connected to the shaft end of the third vibration motor. One end of the plate frame meshes with the gear, and the other end is connected to the roller shaft of the third yarn spreading guide roller.

[0018] Specifically, the plate frame includes an upper side plate and a lower side plate fixed to the side wall of the mounting cavity. Both the upper side plate and the lower side plate are configured such that one end is formed as a rack and meshes with the gear, and the other end is connected to the roller shaft of the third yarn spreading guide roller. The teeth on the gear are in the shape of a slight arc.

[0019] The second aspect of this utility model provides a yarn spreading device, which includes the vibrating yarn spreading device as described above.

[0020] Through the above technical solution, the vibrating yarn spreading device provided by this utility model combines multiple vibration modes formed by the first vibration mechanism, the second vibration mechanism and the third vibration mechanism, which effectively increases the spreading of the yarn bundle. It can not only reduce the problem of yarn bundle adhesion caused by uneven oiling, but also reduce the thickness of the yarn bundle after spreading, making the yarn bundle distribution more uniform. This makes the oxidation degree more uniform in the subsequent pre-oxidation process, reducing the structural changes caused by local heat accumulation and thus reducing the loss of carbon fiber mechanical properties.

[0021] In a preferred embodiment, the first vibration mechanism, the second vibration mechanism, and the third vibration mechanism are arranged sequentially according to the process, so that the filament bundle is first partially squeezed under the action perpendicular to the contact surface and at the same time, the contact with the mechanism is more complete. Thus, under the joint action, it is easier to generate axial movement, resulting in wider and more uniform distribution. Then, axial movement forces the concentrated areas in the filament bundle to disperse. Finally, horizontal vibration causes the tension of the filament bundle to change periodically, balancing the forces between different fibers during the stretching process, allowing the filament bundle to further unfold, effectively expanding the width of the filament bundle after unfolding, and reducing the performance loss caused by concentrated heat dissipation of the fiber bundle during the pre-oxidation process. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a specific embodiment of the vibrating yarn spreading device in this utility model;

[0023] Figure 2 yes Figure 1 Top view of the vibrating yarn spreading device shown;

[0024] Figure 3 This is a schematic diagram of a specific embodiment of the second vibration mechanism in this utility model;

[0025] Figure 4 yes Figure 3 The diagram shows the structure of the crank-puss component in the second vibration mechanism.

[0026] Figure 5 This is a schematic diagram of a specific embodiment of the third vibration mechanism in this utility model;

[0027] Figure 6 yes Figure 5 The diagram shows the structure of the third transmission component in the third vibration mechanism.

[0028] Figure 7 This is a schematic diagram and process flow chart of a specific embodiment of the yarn spreading equipment in this utility model;

[0029] Figure 8 This is a structural schematic diagram of a specific embodiment of the axial blowing groove of this utility model.

[0030] Explanation of reference numerals in the attached figures

[0031] 1-First vibration mechanism, 11-First yarn spreading guide roller, 12-First vibration motor;

[0032] 2-Second vibration mechanism, 21-Second yarn spreading guide roller, 22-Second vibration motor, 23-Crank push rod assembly, 231-First push rod, 232-Second push rod, 24-Motor base;

[0033] 3-Third vibration mechanism, 31-Third yarn spreading guide roller, 32-Third vibration motor, 33-Plate frame, 34-Gear, 35-Rack;

[0034] 4- Mounting rack, 41- Mounting cavity, 42- Rack side plate, 43- Rack base, 44- Elongated hole;

[0035] 5-First yarn spreading guide roller, 6-Second yarn spreading guide roller, 7-Axial blowing groove, 8-Secondary yarn spreading guide roller. Detailed Implementation

[0036] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0037] First, it should be noted that some directional terms used in the following description to clearly illustrate the technical solution of this utility model, such as "front," "rear," "upper," "lower," "left," and "right," refer to the direction from the input cavity 41 to the output cavity 41 of the raw filament, based on the mounting frame 4. "Front" refers to the direction from the input cavity 41 to the output cavity 41 of the raw filament; "rear" refers to the opposite direction; "left" refers to the left side of the raw filament in the conveying direction of the cavity 41; "right" refers to the right side of the raw filament in the conveying direction of the cavity 41; "upper" refers to the upper part of the raw filament in the conveying direction of the cavity 41; and "lower" refers to the lower part of the raw filament in the conveying direction of the cavity 41. These terms are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as limiting this utility model.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "fixing," and "connection" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] Furthermore, the terms “first,” “second,” and “third” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as “first,” “second,” or “third” may explicitly or implicitly include one or more of the stated features.

[0040] The first aspect of this utility model provides a vibrating yarn spreading device, see [link to relevant documentation] Figure 1 and Figure 2 It includes a first vibration mechanism 1, a second vibration mechanism 2 and a third vibration mechanism 3. The first vibration mechanism 1 is configured to generate a vibration force perpendicular to the contact surface between the mechanism and the filament bundle it transmits. The second vibration mechanism 2 is configured to generate a vibration force parallel to the width direction of the filament bundle it transmits. The third vibration mechanism 3 is configured to generate a front-to-back vibration force on the filament bundle it transmits.

[0041] In this invention, when the first vibration mechanism 1 is in line contact with the filament bundle, the contact surface refers to the tangential surface at the point of contact between the first vibration mechanism 1 and the filament bundle. When the contact surface between the first vibration mechanism 1 and the filament bundle is curved, the vibration force generated is perpendicular to any tangential surface on the curved contact surface. This perpendicularity is not limited to strict perpendicularity; the direction of the vibration force generated by the first vibration mechanism 1 can also form a certain angle with the direction perpendicular to the contact surface between the mechanism and the filament bundle, for example, an angle less than 15°. The vibration force generated by the second vibration mechanism 2 on the filament bundle it transmits can be strictly parallel to the width direction of the filament bundle, or it can form a certain angle with the width direction of the filament bundle, for example, an angle less than 15°. The vibration force generated by the third vibration mechanism 3 on the filament bundle it transmits can be strictly in a front-back direction on a horizontal plane, or it can be in a front-back direction within a plane forming a certain angle with the horizontal plane, for example, an angle less than 15°.

[0042] The vibrating yarn spreading device provided by this utility model can be applied to spreading any kind of yarn bundle. Specifically, the yarn bundle can be a small yarn bundle or a large yarn bundle, it can be raw yarn or other fiber products, it can be an inorganic polymer yarn bundle (e.g., carbon fiber) or an organic polymer yarn bundle (e.g., polyacrylonitrile yarn bundle); it is suitable for continuous spreading of large yarn bundles.

[0043] The yarn spreading process of the above-mentioned basic technical solution's vibrating yarn spreading device is as follows: the first vibration mechanism 1, the second vibration mechanism 2, and the third vibration mechanism 3 are installed in any order; when the yarn bundle passes through the first vibration mechanism 1, it is partially squeezed under the action of perpendicular contact surface and makes more complete contact with the mechanism, so that it is easier to generate axial movement under the joint action; when the yarn bundle passes through the second vibration mechanism 2, it undergoes axial movement, which forces the concentrated area in the yarn bundle to disperse; when the yarn bundle passes through the third vibration mechanism 3, it undergoes horizontal vibration, which causes the yarn bundle to disperse due to the periodic change in tension between fibers. The whole process has a high vibration frequency and good dispersion and spreading effect on the yarn bundle.

[0044] In this invention, the first vibration mechanism 1, the second vibration mechanism 2, and the third vibration mechanism 3 can be arranged arbitrarily so that the different vibration forces generated by the three mechanisms act on the passing filament bundle in different sequences, thereby obtaining different yarn unfolding effects. Specifically, the appropriate arrangement order and process of the three mechanisms can be selected according to the different types of filament bundles. Preferably, the first vibration mechanism 1, the second vibration mechanism 2, and the third vibration mechanism 3 are arranged sequentially according to the process, so that the filament bundle is first partially squeezed under the action perpendicular to the contact surface, and the contact with the mechanism is more complete. Thus, under the joint action, it is easier to generate axial movement, resulting in wider and more uniform unfolding. Then, the movement parallel to the filament bundle unfolding direction forces the concentrated areas in the filament bundle to disperse. Finally, the vibration in the front and back directions causes the tension of the filament bundle to change periodically, balancing the forces between different fibers during the stretching process, allowing the filament bundle to unfold further, effectively expanding the width of the filament bundle after unfolding, and reducing the performance loss caused by the concentrated heat dissipation of the fiber bundle during the pre-oxidation process. More preferably, the second vibration mechanism 2 is located below the front side of the first vibration mechanism 1, and the third vibration mechanism 3 is placed above the second vibration mechanism 2 and is staggered from the second vibration mechanism 2 in the front-back direction.

[0045] In this invention, the first vibration mechanism 1, the second vibration mechanism 2, and the third vibration mechanism 3 can be installed on fixed equipment or can be detachably installed for use according to the corresponding process equipment. As a preferred embodiment, the vibrating yarn spreading device further includes a mounting frame 4 with a mounting cavity 41, in which the first vibration mechanism 1, the second vibration mechanism 2, and the third vibration mechanism 3 are all located, making the entire vibrating yarn spreading device more compact and more integrated.

[0046] The mounting cavity 41 can be fully enclosed or semi-enclosed. Preferably, the mounting frame 4 is formed by two vertical and oppositely arranged frame side plates 42. The two frame side plates 42 can be parallel or non-parallel. They can be fixed on the ground or have an independent frame base 43 for fixing the mounting frame side plates 42.

[0047] In this invention, the first vibration mechanism 1 generates a vibrational force perpendicular to the contact surface between the mechanism and the yarn bundle through high-frequency self-vibration. In a preferred embodiment, the first vibration mechanism 1 includes a first yarn-spreading guide roller 11 located in the mounting cavity 41 and a first driving unit that drives the first yarn-spreading guide roller 11 to vibrate. Both ends of the first yarn-spreading guide roller 11 are connected to the sidewalls of the mounting cavity 41, forming a vibration gap between them. The first driving unit drives the first yarn-spreading guide roller 11 to vibrate spontaneously, and the direction of its vibration is related to the contact position of the yarn bundle. When the yarn bundle contacts the guide roller, it receives vibrational energy perpendicular to the contact surface generated by the first yarn-spreading guide roller 11. The vibration gap allows the first yarn-spreading guide roller 11 to vibrate spontaneously to a certain amplitude.

[0048] The vibration gap can be achieved by pre-reserving a certain gap between the two ends of the first yarn-spreading guide roller 11 and the side wall of the mounting cavity 41. Preferably, the side wall of the mounting cavity 41 is provided with a first mounting hole that matches the two ends of the first yarn-spreading guide roller 11, and an elastic washer is provided between the first yarn-spreading guide roller 11 and the first mounting hole. The elastic washer protects the first yarn-spreading guide roller 11 through its buffering effect. The elastic washer can be made of any elastic material, and more preferably, the elastic washer is a rubber washer.

[0049] In a preferred embodiment of the first driving unit, the first driving unit includes a first vibrating motor 12 disposed inside the first yarn spreading guide roller 11 and a first transmission component. The first vibrating motor 12 and the first yarn spreading guide roller 11 are connected by the first transmission component to improve the transmission efficiency between the first vibrating motor 12 and the first yarn spreading guide roller 11 and increase the self-vibration frequency of the first yarn spreading guide roller 11. The first vibrating motor 12 is preferably an eccentric vibrating motor.

[0050] In this invention, the second vibration mechanism 2 can be a guide roller or any driving component that drives the filament bundle to reciprocate along the axial direction of the guide roller. As a preferred embodiment, see [link to preferred embodiment]. Figure 3 and Figure 4The second vibration mechanism 2 includes a second yarn spreading guide roller 21 located in the mounting cavity 41 and a second drive unit for driving the second yarn spreading guide roller 21 to perform axial reciprocating motion. The two ends of the second yarn spreading guide roller 21 are connected to the side wall of the mounting cavity 41 to efficiently form a vibration force parallel to the width direction of the yarn bundle, resulting in better dispersion and unfolding of the yarn bundle.

[0051] It is understood that the sidewall of the mounting cavity 41 is directly or indirectly provided with a connecting member that allows the second yarn spreading guide roller 21 to move axially. In a preferred embodiment, the second drive unit includes a second vibration motor 22 and a second transmission assembly. The second transmission assembly includes guide rail seats located on the outer sides of the shaft ends of the second yarn spreading guide roller 21 and a crank push rod 23. The guide rail seats are connected to the sidewall of the mounting cavity 41. The two ends of the roller shaft of the second yarn spreading guide roller 21 are slidably connected to the corresponding guide rail seats. One end of the crank push rod 23 is connected to the second vibration motor 22, and the other end is connected to the roller shaft of the second yarn spreading guide roller 21, so that the second vibration motor 22 drives the second yarn spreading guide roller 21 to reciprocate axially along the guide rail seats through the crank push rod 23. The guide rail seat can be directly mounted on the side wall of the mounting cavity 41, or it can be connected to the side wall of the mounting cavity 41 through the guide rail seat plate; the guide rail seat is provided with a guide rail along the axial direction of the second yarn spreading guide roller 21, and the shaft end of the second yarn spreading guide roller 21 is provided with a guide block that matches the guide rail.

[0052] In a preferred embodiment, the rotation plane of the second vibrating motor 22 is vertical and parallel to the roller shaft of the second yarn spreading guide roller 21, so as to efficiently generate an axial reciprocating driving force on the second yarn spreading guide roller 21. The second vibrating motor 22 is fixedly connected to one side of the shaft end of the second yarn spreading guide roller 21 by a transverse motor base 24.

[0053] In this invention, the crank push rod 23 transmits the power of the second vibrating motor 22 to the second yarn spreading guide roller 21 in real time and forms an axial reciprocating motion. Preferably, the crank push rod 23 includes a first push rod 231 and a second push rod 232. One end of the first push rod 231 is connected to the rotating shaft of the second vibrating motor 22, and the other end has a hollowed-out portion extending along its axial direction. One end of the second push rod 232 is slidably connected to the hollowed-out portion, and the other end is connected to the roller shaft of the second yarn spreading guide roller 21. The second vibrating motor 22 is located on the outer side of the second yarn spreading guide roller 21 along its axial direction. The rotational force of the second vibrating motor 22 drives the first push rod 231 to perform circular motion. One end of the second push rod 232 moves along the hollow part, so that the axial reciprocating displacement of the circular motion is transmitted to the second yarn spreading guide roller 21 fixed in a horizontal position through the second push rod 232 with rolling bearings by the first push rod 231. This realizes the transmission of the axial displacement of the second vibrating motor 22 during rotation to the second yarn spreading guide roller 21, thereby forming a reciprocating pushing force on the second yarn spreading guide roller 21 along its axial direction.

[0054] In this invention, the third vibration mechanism 3 can be any type of drive structure that drives the filament bundle to reciprocate in the front-to-back direction. As a preferred embodiment, see [link to preferred embodiment]. Figure 5 and Figure 6 The third vibration mechanism 3 includes a third yarn-spreading guide roller 31 located in the mounting cavity 41 and a third drive unit for driving the third yarn-spreading guide roller 31 to reciprocate back and forth. The side wall of the mounting cavity 41 is provided with elongated holes 44 that are oppositely arranged and extend in the front-back direction. The two ends of the third yarn-spreading guide roller 31 are slidably connected to the elongated holes 44 to efficiently generate a front-back vibration force on the yarn bundle, resulting in better dispersion and unfolding of the yarn bundle. The elongated holes 44 can be elongated oval holes extending back and forth on a horizontal plane, or elongated oval holes extending back and forth at an angle upwards or downwards relative to the horizontal plane.

[0055] In a preferred embodiment, the third drive unit includes a third vibration motor 32 corresponding to both ends of the third yarn-spreading guide roller 31 and a third transmission assembly corresponding to the third vibration motor 32. The third transmission assembly includes a plate frame 33 located outside the shaft end of the third yarn-spreading guide roller 31 and a gear 34 connected to the shaft end of the third vibration motor 32. One end of the plate frame 33 meshes with the gear 34, and the other end is connected to the roller shaft of the third yarn-spreading guide roller 31. The plate frame 33 extends in the front-back direction. Due to the number of teeth on the gear 34, when the gear 34 rotates with the third vibration motor 32, only one gear 34 can mesh, so that the stroke of the end of the plate frame 33 meshing with the gear 34 is fixed, realizing the back-and-forth reciprocating motion of the third yarn-spreading guide roller 31.

[0056] More preferably, the plate frame 33 includes an upper side plate and a lower side plate fixed to the side wall of the mounting cavity 41. Both the upper and lower side plates are configured such that one end is formed as a rack 35 and meshes with a gear 34, and the other end is connected to the roller shaft of the third yarn spreading guide roller 31. The teeth on the gear 34 are in the shape of a minor arc. The tooth surface of the rack 35 on the upper side plate faces downward, and the tooth surface of the rack 35 on the lower side plate faces upward, ensuring that the gear 34 can mesh with the rack 35 during movement. Since the two racks 35 are distributed on both sides of the gear 34, and the two racks 35 travel in opposite directions when meshing with the gear 34, the reciprocating motion of the third yarn spreading guide roller 31 can be realized without changing the rotation direction of the third vibration motor 32.

[0057] In this invention, the second vibration motor 22 and the third vibration motor 32 can be any type of vibration motor, preferably a geared motor; the shaft ends of the first yarn spreading guide roller 11, the second yarn spreading guide roller 21 and the third yarn spreading guide roller 31 are connected to other components by bearings, such as seated bearings, rolling bearings, etc.

[0058] In this invention, the first vibration motor 12, the second vibration motor 22, and the third vibration motor 32 can each be independently electrically connected to the controller to automatically control the vibration process at each stage.

[0059] Based on the vibrating yarn spreading device provided by the above-described technical solutions of this utility model, a second aspect of this utility model provides a yarn spreading device, including the vibrating yarn spreading device described in any of the above technical solutions. Therefore, it possesses at least all the beneficial effects brought about by the technical solutions of the above-described vibrating yarn spreading device embodiments.

[0060] In this invention, the yarn spreading equipment generally includes a first yarn spreading fixed guide roller 5 disposed behind the vibrating yarn spreading device and a second yarn spreading fixed guide roller 6 disposed in front of the vibrating yarn spreading device; to further improve yarn spreading efficiency and enhance the effect of yarn bundle dispersion and spreading, see [reference needed]. Figure 1 and Figure 8 The yarn spreading equipment also includes an axial blowing groove 7 for heating and softening the yarn bundle, and an auxiliary yarn spreading guide roller 8 located between the vibrating yarn spreading device and the second yarn spreading fixed guide roller 6. The first yarn spreading fixed guide roller 5 and the second yarn spreading fixed guide roller 6 can both be provided with small side plates distributed at certain intervals to separate the yarn bundle; the axial blowing groove 7 can be equipped with a heating resistance wire and a blower motor to realize the blowing heating of the yarn bundle.

[0061] Unless otherwise specified, the driving and control of each guide roller in this invention adopts conventional methods.

[0062] As a relatively preferred embodiment of the yarn spreading equipment in this utility model, the yarn spreading equipment includes a first yarn spreading fixed guide roller 5, an axial blowing groove 7, a vibrating yarn spreading device, an auxiliary yarn spreading guide roller 8, and a second yarn spreading fixed guide roller 6 arranged in sequence according to the process. The vibrating yarn spreading device includes a mounting frame 4 forming a mounting cavity 41 and a first vibration mechanism 1, a second vibration mechanism 2, and a third vibration mechanism 3 arranged in sequence in the mounting cavity 41. The second vibration mechanism 2 is located below the front side of the first vibration mechanism 1, and the third vibration mechanism 3 is located above the second vibration mechanism 2 and is staggered from the second vibration mechanism 2 in the front-back direction. The mounting frame 4 includes a frame base 43, a fixed floor for fixing the frame base 43, and two frame side plates 42 fixedly installed on the frame base 43. The two frame side plates 42 are vertically arranged and opposite to each other to form the mounting cavity 41.

[0063] The first vibration mechanism 1 includes a first yarn spreading guide roller 11 located in the mounting cavity 41 and a first drive unit for driving the first yarn spreading guide roller 11 to vibrate. The two frame side plates 42 are provided with first mounting holes that match the two ends of the first yarn spreading guide roller 11. The two ends of the first yarn spreading guide roller 11 are installed in the first mounting holes and elastic washers are provided between them and the first mounting holes. The first drive unit includes a first vibration motor 12 and a first transmission component disposed inside the first yarn spreading guide roller 11. The first vibration motor 12 and the first yarn spreading guide roller 11 are connected by transmission through the first transmission component.

[0064] The second vibration mechanism 2 includes a second yarn spreading guide roller 21 located in the mounting cavity 41 and a second drive unit for driving the second yarn spreading guide roller 21 to perform axial reciprocating motion. The two ends of the second yarn spreading guide roller 21 are connected to two frame side plates 42. The second drive unit includes a second vibration motor 22 and a second transmission assembly. The rotation plane of the second vibration motor 22 is vertical and parallel to the roller shaft of the second yarn spreading guide roller 21. The second transmission assembly includes guide rail seats located on the outer sides of the shaft ends of the second yarn spreading guide roller 21 and a crank push rod 23. The guide rail seats are connected to the frame side plates 42. The two ends of the roller shaft of the second yarn spreading guide roller 21 are slidably connected to the corresponding guide rail seats. The crank push rod 23 includes a first push rod 231 and a second push rod 232. One end of the first push rod 231 is connected to the rotating shaft of the second vibration motor 22, and the other end forms a hollow part extending along its axial direction. One end of the second push rod 232 is slidably connected to the hollow part, and the other end is connected to the roller shaft of the second yarn spreading guide roller 21.

[0065] The third vibration mechanism 3 includes a third yarn-spreading guide roller 31 located in the mounting cavity 41 and a third drive unit for driving the third yarn-spreading guide roller 31 to reciprocate back and forth. Two frame side plates 42 are provided with elongated holes 44 arranged opposite to each other. The two ends of the third yarn-spreading guide roller 31 are slidably connected to the elongated holes 44. The third drive unit includes a third vibration motor 32 arranged corresponding to the two ends of the third yarn-spreading guide roller 31 and a third transmission assembly arranged corresponding to the third vibration motor 32. The third transmission assembly includes a plate frame 33 located outside the shaft end of the third yarn-spreading guide roller 31 and a gear 34 connected to the shaft end of the third vibration motor 32. The plate frame 33 includes an upper side plate and a lower side plate fixed on the side wall of the mounting cavity 41. The upper side plate and the lower side plate are both configured such that one end is formed as a rack 35 and meshes with the gear 34, and the other end is connected to the roller shaft of the third yarn-spreading guide roller 31. The teeth on the gear 34 are in the shape of a slight arc.

[0066] Based on this optimal embodiment, see Figure 7 The process of spreading yarn using silk bundles is as follows:

[0067] The first yarn spreading guide roller 5 is fixed to the top of the two frame side plates 42 by bearings and is parallel to the direction in which the yarn bundle enters the mounting cavity 41. The yarn bundle is initially split by the small side plates spaced apart on the first yarn spreading guide roller 5.

[0068] The axial blowing groove 7 is located before the first yarn spreading fixed guide roller 5 and above the first yarn spreading guide roller 11. The axial blowing groove 7 applies hot airflow perpendicular to the direction of its movement to the primary bundle of yarn. The primary bundle of yarn is heated and softened by the airflow, which is beneficial for subsequent vibration bundling.

[0069] After the fibers of the primary bundle are heated by the hot air in the axial blowing groove 7, they come into contact with the self-vibrating first yarn spreading guide roller 11. The first yarn spreading guide roller 11 transmits its own vibration to the yarn bundle, realizing the high-frequency vibration of the yarn bundle.

[0070] The second yarn spreading guide roller is arranged above the frame base 43 and below the first yarn spreading fixed guide roller 5 and the first yarn spreading guide roller 11. The rotational power of the second vibration motor 22 drives the first push rod 231 to perform circular motion. One end of the second push rod 232 moves along the hollow part so that the axial reciprocating motion of the circular motion is transmitted to the second yarn spreading guide roller 21 fixed in the horizontal position through the second push rod 232 with rolling bearing, thereby realizing the transmission of the axial displacement of the second vibration motor 22 during rotation to the second yarn spreading guide roller 21, thus forming a reciprocating motion of the second yarn spreading guide roller 21 along its axial direction.

[0071] The toothed surfaces of the rack 35 on the upper side plate are downward and the toothed surfaces of the rack 35 on the lower side plate are upward, ensuring that the gear 34 can mesh with the rack 35 during the movement. The two racks 35 are distributed on both sides of the gear 34. When meshing with the gear 34, the two racks 35 travel in opposite directions. Without changing the rotation direction of the third vibration motor 32, the reciprocating motion of the third yarn spreading guide roller 31 is realized.

[0072] Unsplit fiber bundles sequentially pass over the first spreading guide roller 5, the first spreading guide roller 11, the second spreading guide roller 21, the third spreading guide roller 31, the auxiliary spreading guide roller 8, and the second spreading guide roller 6. The fiber bundles wrapped around the first spreading guide roller 5 are partially compressed under the self-vibration of the first spreading guide roller 11, resulting in more complete contact between the fibers and the first spreading guide roller 5. Under this combined action, axial movement is more likely, making it easier for distant fiber bundles to insert into the gaps of the first spreading guide roller 5, resulting in wider and more evenly distributed fibers. After passing through the second spreading guide roller 21, due to the... The axial reciprocating motion of the second spreading guide roller 21 causes the fibers to move axially. This axial movement forces the originally concentrated areas to disperse, while the uniformly spaced fixing action of the first spreading fixed guide roller 5 preserves the state of the dispersed fibers. Next, the fibers pass through the third spreading guide roller 31. The back-and-forth movement of the third spreading guide roller 31 causes the tension of the fiber bundle to change periodically and creates movement between the fiber bundles, thereby balancing the forces on different fibers during the stretching process. The fibers are then spread out on the third spreading guide roller 31. Finally, the fiber bundle leaves the spreading equipment from the second spreading fixed guide roller 6, completing the spreading operation.

[0073] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0074] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0075] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A vibrating yarn spreading device, characterized in that, The vibrating yarn spreading device includes a first vibrating mechanism (1), a second vibrating mechanism (2), and a third vibrating mechanism (3). The first vibrating mechanism (1) is configured to generate a vibration force perpendicular to the contact surface between the mechanism and the yarn bundle on the yarn bundle it transmits. The second vibrating mechanism (2) is configured to generate a vibration force parallel to the width direction of the yarn bundle on the yarn bundle it transmits. The third vibrating mechanism (3) is configured to generate a vibration force in the front-back direction on the yarn bundle it transmits.

2. The vibrating yarn spreading device according to claim 1, characterized in that, The first vibration mechanism (1), the second vibration mechanism (2), and the third vibration mechanism (3) are arranged sequentially according to the process.

3. The vibrating yarn spreading device according to claim 1, characterized in that, The vibrating yarn spreading device also includes a mounting frame (4) with a mounting cavity (41), in which the first vibration mechanism (1), the second vibration mechanism (2) and the third vibration mechanism (3) are all located.

4. The vibrating yarn spreading device according to claim 3, characterized in that, The first vibration mechanism (1) includes a first yarn spreading guide roller (11) located in the mounting cavity (41) and a first driving unit that drives the first yarn spreading guide roller (11) to vibrate. The two ends of the first yarn spreading guide roller (11) are connected to the side wall of the mounting cavity (41) and form a vibration gap between them.

5. The vibrating yarn spreading device according to claim 4, characterized in that, The side wall of the mounting cavity (41) is provided with first mounting holes that match both ends of the first yarn spreading guide roller (11), and an elastic washer is provided between the first yarn spreading guide roller (11) and the first mounting hole; and / or, The first drive unit includes a first vibration motor (12) disposed inside the first yarn spreading guide roller (11) and a first transmission component. The first vibration motor (12) and the first yarn spreading guide roller (11) are connected by transmission through the first transmission component.

6. The vibrating yarn spreading device according to claim 5, characterized in that, The first vibration motor (12) is an eccentric vibration motor, and the elastic washer is a rubber washer.

7. The vibrating yarn spreading device according to any one of claims 3 to 6, characterized in that, The second vibration mechanism (2) includes a second yarn spreading guide roller (21) located in the mounting cavity (41) and a second drive unit for driving the second yarn spreading guide roller (21) to perform axial reciprocating motion. The two ends of the second yarn spreading guide roller (21) are connected to the side wall of the mounting cavity (41).

8. The vibrating yarn spreading device according to claim 7, characterized in that, The second drive unit includes a second vibration motor (22) and a second transmission assembly. The second transmission assembly includes a guide rail seat located on the outer side of the shaft ends on both sides of the second yarn spreading guide roller (21) and a crank push rod (23). The guide rail seat is connected to the side wall of the mounting cavity (41). The two ends of the roller shaft of the second yarn spreading guide roller (21) are slidably connected to the corresponding guide rail seat. One end of the crank push rod (23) is connected to the second vibration motor (22), and the other end is connected to the roller shaft of the second yarn spreading guide roller (21), so that the second vibration motor (22) drives the second yarn spreading guide roller (21) to reciprocate axially along the guide rail seat through the crank push rod (23).

9. The vibrating yarn spreading device according to claim 8, characterized in that, The rotation plane of the second vibrating motor (22) is vertical and parallel to the roller shaft of the second yarn spreading guide roller (21); The crank push rod component (23) includes a first push rod (231) and a second push rod (232). One end of the first push rod (231) is connected to the shaft of the second vibrating motor (22), and the other end has a hollowed-out portion extending along its axial direction. One end of the second push rod (232) is slidably connected to the hollowed-out portion, and the other end is connected to the roller shaft of the second yarn spreading guide roller (21).

10. The vibrating yarn spreading device according to any one of claims 3 to 6, characterized in that, The third vibration mechanism (3) includes a third yarn spreading guide roller (31) located in the mounting cavity (41) and a third drive unit for driving the third yarn spreading guide roller (31) to reciprocate back and forth. The side wall of the mounting cavity (41) is provided with elongated holes (44) that are arranged opposite each other and extend in the front and back direction. The two ends of the third yarn spreading guide roller (31) are slidably connected to the elongated holes (44).

11. The vibrating yarn spreading device according to claim 10, characterized in that, The third drive unit includes a third vibration motor (32) corresponding to both ends of the third yarn spreading guide roller (31) and a third transmission assembly corresponding to the third vibration motor (32). The third transmission assembly includes a plate frame (33) located outside the shaft end of the third yarn spreading guide roller (31) and a gear (34) connected to the shaft end of the third vibration motor (32). One end of the plate frame (33) meshes with the gear (34), and the other end is connected to the roller shaft of the third yarn spreading guide roller (31).

12. The vibrating yarn spreading device according to claim 11, characterized in that, The plate frame (33) includes an upper side plate and a lower side plate fixed on the side wall of the mounting cavity (41). The upper side plate and the lower side plate are both configured such that one end is formed as a rack (35) and meshes with the gear (34), and the other end is connected to the roller shaft of the third yarn spreading guide roller (31). The teeth on the gear (34) are in the shape of a slight arc.

13. A yarn spreading device, characterized in that, The yarn spreading equipment includes a vibrating yarn spreading device according to any one of claims 1 to 12.

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