Endless wool cleaning belt for a roving frame or a drawing frame and a method for manufacturing the same

Abstract

This invention belongs to the technical field of cleaning products for textile machinery and their preparation, specifically relating to an endless wool cleaning tape for roving frames or drawing frames and its preparation method. It aims to solve the problems of insufficient breathability and heat dissipation, easy circumferential elongation, and poor dimensional stability of existing cleaning tapes. The invention comprises: an endless cylindrical mesh base fabric and a first wool cleaning layer and a second wool cleaning layer needle-punched on its inner and outer sides respectively. After double-sided needle punching, it is heat-set according to the target installation circumference. This invention can improve the dimensional stability and breathability and heat dissipation of the cleaning tape, and achieve double-sided cleaning use and dimensional adaptation for different installation circumferences.

Description

Technical Field

[0001] This invention belongs to the field of textile machinery cleaning products and their preparation technology, specifically relating to an endless wool cleaning tape for roving frames or drawing frames and its preparation method. Background Technology

[0002] In the spinning process, roving frames and drawing frames typically utilize rollers and slip rollers to draft, transport, and finish the fiber sliver. During continuous operation, short fibers, cotton, cotton wax, cotton sugar, and other impurities easily adhere to the surfaces of the rollers and slip rollers. Especially when the rollers and slip rollers are in continuous contact and friction with cleaning components, localized temperature increases can further enhance the adhesion of some of these substances to the roller or slip roller surface, leading to phenomena such as sliver entanglement and yarn wrapping, which negatively impact fiber drafting and yarn quality. Therefore, roving frames and drawing frames are usually equipped with circulating cleaning belts that continuously contact the rollers or slip rollers to remove these adhering substances.

[0003] One type of existing cleaning belt consists of a base fabric, adhesive, and a flocking layer. The adhesive is coated onto the base fabric surface, and then synthetic fiber fluff, such as nylon, is fixed to the surface using electrostatic flocking. However, the base fabric and adhesive layer can obstruct airflow along the thickness of the cleaning belt, hindering the timely dissipation of frictional heat in high-speed contact environments with rollers or skin rollers. Furthermore, the synthetic fiber fluff is prone to charge accumulation during continuous friction, which, without a proper electrostatic dissipation path, may affect the continuous and stable operation of the cleaning belt. Additionally, some textile materials may have fluorescent whitening agents or fluorescent finishing auxiliaries added during processing, causing the material to exhibit characteristic fluorescence caused by the fluorescent whitening agents under ultraviolet light.

[0004] Another type of cleaning belt is made of yarn to form a cylindrical belt body, and a napping process is used to create a pile on the surface of the belt body. This type of cylindrical fabric has a certain degree of elasticity, and after being subjected to circumferential tension and cyclic friction for a long time, its circumference is prone to change, which will change the installation tension and operating status of the cleaning belt; the surface pile formed by napping may also fall off during continuous friction, affecting the cleaning performance and service life.

[0005] Furthermore, cleaning belts for roving frames or drawing frames typically have strict installation dimensional requirements. If the circumference of the cleaning belt is too large, problems such as insufficient installation tension and unstable transmission may occur; conversely, if the circumference is too small, installation difficulties or excessive installation tension may arise. Therefore, how to improve the circumferential dimensional stability and air permeability of the cleaning belt while ensuring good cleaning performance, and reducing the impact of adhesive structures, static electricity buildup, and long-term elongation on cleaning stability, are technical problems that still need to be further addressed for existing cleaning belts used in roving frames and drawing frames. Summary of the Invention

[0006] To address the problems of insufficient breathability and heat dissipation, easy circumferential elongation, poor installation dimensional stability, and low cleaning surface utilization of existing cleaning belts for roving frames or drawing frames, this invention provides an endless wool cleaning belt for roving frames or drawing frames and its preparation method.

[0007] The present invention provides an endless wool cleaning belt for roving frames or drawing frames, comprising an endless cylindrical mesh base fabric, a first wool cleaning layer and a second wool cleaning layer; The first wool cleaning layer is disposed on the outer peripheral surface of the mesh base fabric, and the second wool cleaning layer is disposed on the inner peripheral surface of the mesh base fabric. Both the first wool cleaning layer and the second wool cleaning layer are made of wool wadding that is mechanically bonded to the mesh base fabric by needle punching. The mesh base fabric has mesh holes that extend through the thickness direction, and no adhesive layer is provided between the first wool cleaning layer and the second wool cleaning layer and the mesh base fabric; The first wool cleaning layer and the second wool cleaning layer respectively form wool cleaning surfaces for contact with the rollers or leather rollers of the roving frame or drawing frame; The endless wool cleaning tape is heat-set to form a predetermined circumference, which is determined based on the installation circumference of the endless wool cleaning tape on the roving frame or drawing frame.

[0008] Furthermore, the mesh base fabric is a mesh base fabric made of nano bamboo charcoal fiber material, and the mesh holes are distributed along the circumferential and width directions of the mesh base fabric.

[0009] Furthermore, both the first wool cleaning layer and the second wool cleaning layer are natural wool fiber layers, and the unit area mass of the wool flakes forming the first wool cleaning layer and the second wool cleaning layer is 180g / m².

[0010] Furthermore, the endless wool cleaning tape can be flipped inside out so that the first wool cleaning layer and the second wool cleaning layer respectively serve as working cleaning surfaces that come into contact with the roller or leather roller.

[0011] Furthermore, the mesh holes of the mesh base fabric are connected to the fiber gaps in the first wool cleaning layer and the second wool cleaning layer, respectively, to form a breathable heat dissipation channel for gas exchange along the thickness direction of the endless wool cleaning strip.

[0012] The present invention also provides a method for preparing the above-mentioned endless wool cleaning tape, comprising: The wool raw materials are sequentially washed, steamed, dried, and combed to form wool flakes; A mesh base fabric in the shape of an endless cylindrical shape is provided, and the mesh base fabric is sleeved on the two drive shafts of the needle punching device; The length of the wool wadding laid on the mesh base fabric is determined according to the perimeter of the mesh base fabric. The wool wadding is laid on one side of the mesh base fabric, so that the mesh base fabric moves circumferentially under the drive of the transmission shaft. The wool wadding and the mesh base fabric are needle-punched to form a first wool cleaning layer. The mesh base fabric with the first wool cleaning layer is flipped inside out, and the wool wadding is laid on the other side of the mesh base fabric and needle-punched to form the second wool cleaning layer. Select the corresponding electrothermal shaping mold according to the target installation circumference of the endless wool cleaning tape, and put the endless wool cleaning tape with double-sided needle punching on the electrothermal shaping mold for heat shaping, so that the endless wool cleaning tape forms a shaped circumference determined according to the target installation circumference.

[0013] Furthermore, the wool raw material is washed and steamed to remove grease and impurities. After drying, the steamed wool raw material is sent to a combing device for combing to form a product with a unit area mass of 180g / m². 2 The wool floss described above.

[0014] Furthermore, the laying length of the wool wadding is determined according to the perimeter of the mesh base fabric, and the needle punching frequency of the needle punching device and the transmission speed of the transmission shaft are adjusted respectively, so that the wool wadding is continuously laid along the entire circumference of the mesh base fabric and the needle punching is completed.

[0015] Furthermore, the acupuncture frequency of the acupuncture device is 500 times per minute; During the formation of the first wool cleaning layer, the mesh base fabric is continuously needled in three circumferential cycles. After the first wool cleaning layer is needled, the mesh base fabric is flipped inside out, and three circumferential cycles of needle punching are continuously performed on the other side of the mesh base fabric using the same needle punching frequency and transmission speed as when the first wool cleaning layer was formed, in order to form the second wool cleaning layer.

[0016] Furthermore, the electrothermal shaping mold is an electrothermal guide roller mold, and multiple electrothermal guide roller molds with different outer circumferences are pre-configured, with the outer circumference of each electrothermal guide roller mold determined according to the corresponding target installation circumference; Select the corresponding electric heating roller mold according to the target installation circumference of the endless wool cleaning tape to be prepared, and put the endless wool cleaning tape with the first wool cleaning layer and the second wool cleaning layer needle punched on the outer circumference of the electric heating roller mold, and perform heat setting under the condition that the circumferential dimension is constrained by the electric heating roller mold.

[0017] The beneficial effects of this invention are: This invention uses an endless cylindrical mesh fabric as the basic framework of the endless wool cleaning belt, and forms a first wool cleaning layer and a second wool cleaning layer on the outer and inner circumferential surfaces of the mesh fabric, respectively, through needle punching. The mesh fabric bears the main circumferential load generated during the cyclic operation of the cleaning belt, which helps to reduce the circumferential change caused by the expansion and contraction of the cleaning layers themselves, and improves the dimensional stability of the endless wool cleaning belt during long-term operation.

[0018] In this invention, both the first and second wool cleaning layers are mechanically bonded to the mesh base fabric via needle punching, eliminating the need for an adhesive layer between the wool cleaning layer and the mesh base fabric. The mesh openings of the mesh base fabric communicate with the fiber gaps in the wool cleaning layers on both sides, forming a breathable and heat dissipation channel that runs through the thickness direction of the endless wool cleaning belt. This improves air exchange and heat dissipation conditions in the high-speed contact area between the roller or leather roller and the wool cleaning belt, reduces the possibility of continuous accumulation of frictional heat, and helps reduce the continuous adhesion of cotton wax, cotton sugar, and other adhering substances to the surface of the roller or leather roller.

[0019] This invention utilizes natural wool to form a clean surface. The wool raw material undergoes washing, steaming, drying, and combing before needle punching, which reduces grease and impurities in the wool raw material and forms wool wadding with a relatively uniform mass per unit area. This results in a wool clean layer with a relatively uniform thickness and clean surface after needle punching. No fluorescent whitening agents, fluorescent dyes, or fluorescent finishing auxiliaries are added during the wool raw material processing, and ultraviolet detection confirms that the wool wadding does not exhibit characteristic fluorescence caused by fluorescent whitening agents.

[0020] The use of a natural wool needle-punched structure avoids the obstruction of breathability caused by traditional adhesive flocking structures and reduces the risk of charge buildup caused by continuous high-speed friction of synthetic fiber fibers. Combined with the through-mesh holes in the mesh base fabric and the gaps between the wool fibers, it improves air exchange and heat dissipation in the thickness direction of the cleaning belt.

[0021] This invention forms wool cleaning layers on both the inner and outer sides of the mesh base fabric. The endless wool cleaning tape can be flipped inside out, so that the first wool cleaning layer and the second wool cleaning layer can be used as working cleaning surfaces respectively. This improves the utilization of the two wool cleaning surfaces without increasing the installation space of the cleaning tape and extends the effective service life of a single endless wool cleaning tape.

[0022] After completing double-sided needle punching, this invention selects the corresponding electrothermal setting mold for heat setting based on the target installation circumference of the endless wool cleaning tape. Different specifications of endless wool cleaning tape can be prepared by using electrothermal guide roller molds with different outer circumferences. This allows the final circumference of the product to be controlled according to the installation dimensions of the corresponding roving frame or drawing frame, thereby improving the installation adaptability and cyclic operation stability of the endless wool cleaning tape and reducing insufficient tension, installation difficulties, or unstable operation caused by circumference deviation. Attached Figure Description

[0023] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure and interlayer structure of an endless wool cleaning tape provided in an embodiment of the present invention; Figure 2 This is a schematic flowchart illustrating a method for preparing an endless wool cleaning tape according to an embodiment of the present invention. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] like Figure 1 As shown, the first embodiment of the present invention proposes an endless wool cleaning belt for roving frames or drawing frames.

[0027] It includes a mesh base fabric in the shape of an endless cylindrical shape, a first wool cleaning layer and a second wool cleaning layer; The first wool cleaning layer is disposed on the outer peripheral surface of the mesh base fabric, and the second wool cleaning layer is disposed on the inner peripheral surface of the mesh base fabric. Both the first wool cleaning layer and the second wool cleaning layer are made of wool wadding that is mechanically bonded to the mesh base fabric by needle punching. The mesh base fabric has mesh holes that extend through the thickness direction, and no adhesive layer is provided between the first wool cleaning layer and the second wool cleaning layer and the mesh base fabric; The first wool cleaning layer and the second wool cleaning layer respectively form wool cleaning surfaces for contact with the rollers or leather rollers of the roving frame or drawing frame; The endless wool cleaning tape is heat-set to form a predetermined circumference, which is determined based on the installation circumference of the endless wool cleaning tape on the roving frame or drawing frame.

[0028] In practice, the endless wool cleaning tape forms a continuous, closed cylindrical tape without any circumferentially discontinuous overlapping or adhesive joints. The mesh base fabric constitutes the load-bearing skeleton of the endless wool cleaning tape. The first wool cleaning layer and the second wool cleaning layer cover the outer and inner circumferential surfaces of the mesh base fabric, respectively, thus forming a double-sided composite structure in which the first wool cleaning layer, the mesh base fabric, and the second wool cleaning layer are arranged sequentially.

[0029] The endless cylindrical structure allows the endless wool cleaning belt to continuously circulate along the corresponding drive path after being installed in the cleaner of the roving frame or drawing frame. This avoids the impact on the smoothness of operation caused by changes in the thickness or local stiffness of the joint area when setting a joint, and allows the wool cleaning surface to pass through the cleaning area where the roller or leather roller is located more continuously.

[0030] Both the first and second wool cleaning layers use wool wadding as the layering material. During the needle punching process, the needles repeatedly puncture the wool wadding and the mesh base fabric, causing the wool fibers to mechanically entangle on the surface of the mesh base fabric and in the area where the mesh holes are located. This mechanically fixes the wool wadding to the mesh base fabric without the need for an adhesive layer between the wool cleaning layer and the mesh base fabric.

[0031] After needle punching, the first and second wool cleaning layers form wool cleaning surfaces with a certain thickness and fluffiness. When the endless wool cleaning belt is installed on the roving frame or drawing frame and runs in a cycle, the wool cleaning layer, as the working cleaning surface, is in continuous contact with the rollers or leather rollers, wiping, carrying away and removing short fibers, cotton, cotton wax, cotton sugar and other spinning impurities attached to the surface of the rollers or leather rollers.

[0032] Since both the first and second wool cleaning layers are mechanically bonded to the mesh base fabric via needle punching, a continuous adhesive layer is not required to maintain the connection, thus avoiding the blockage of breathable areas of the mesh base fabric by the adhesive layer. Simultaneously, the cleaning surface formed by natural wool allows for flexible contact with the rollers or leather rollers, reducing direct friction between hard cleaning materials and the equipment surface.

[0033] The mesh base fabric has mesh holes that extend along the thickness direction, and fiber gaps are maintained between the wool fibers in the first and second wool cleaning layers. When the endless wool cleaning belt comes into high-speed contact with the roller or leather roller, the heat generated by friction can be transferred to the mesh base fabric through the fiber gaps in the working cleaning surface, and diffused to the other side of the belt and the surrounding air through the mesh holes.

[0034] During the spinning process, the continuous contact between the rollers, the lead rollers, and the cleaning belt easily generates heat. As the temperature rises, substances such as cotton wax and cotton sugar tend to adhere more strongly to the surface of the rollers or lead rollers, further adsorbing short fibers and forming tangles or loops. This embodiment, by omitting the adhesive layer and retaining the mesh openings, improves air exchange and heat dissipation along the thickness direction of the endless wool cleaning belt, reducing the likelihood of continuous heat accumulation in the cleaning contact area, thus helping to maintain the cleanliness of the roller and lead roller surfaces.

[0035] After double-sided needle punching, the endless wool cleaning tape undergoes further heat setting. The installation circumference of the cleaning tape may vary depending on the model of the roving frame, drawing frame, or the size of the cleaner. Therefore, the predetermined circumference of the endless wool cleaning tape is determined based on the actual installation circumference of the equipment, and then heat setting is used to form the corresponding stable circumference of the product.

[0036] When the circumference of the endless wool cleaning tape is too large, insufficient tension, transmission slippage, or unstable operation may occur after installation; when the circumference is too small, it may be difficult to install or result in excessive tension after installation. By performing circumference heat setting after double-sided needle punching, the dimensional compatibility between the endless wool cleaning tape and different roving or drawing frame cleaners can be improved, and the impact of tape size deviation on normal operation can be reduced.

[0037] The above structure allows the mesh base fabric to bear the main circumferential load, while the first and second wool cleaning layers perform surface cleaning. At the same time, the mesh holes and the gaps between the wool fibers form a breathable heat dissipation path, and the final circumference of the product is controlled by heat setting, thus taking into account the dimensional stability, double-sided cleaning capability, breathable heat dissipation capability, and operational stability of the endless wool cleaning tape.

[0038] As a further explanation of the first embodiment, the mesh base fabric is a mesh base fabric made of nano bamboo charcoal fiber material, and the mesh holes are distributed along the circumferential and width directions of the mesh base fabric.

[0039] In practice, the mesh base fabric made of nano-bamboo charcoal fiber material is processed into a continuous cylindrical shape and serves as the basic framework for the entire endless wool cleaning belt. The mesh base fabric has a mesh structure extending in both the circumferential and width directions, and multiple mesh holes extending along the thickness direction are formed in the mesh structure.

[0040] When the mesh base fabric is installed in the cleaner and is in cyclic operation, it mainly bears the tension generated by the endless wool cleaning belt along the circumference, so that the first and second wool cleaning layers do not need to bear the main role of maintaining the product circumference on their own. By using a mesh base fabric with high tensile strength, the possibility of significant circumferential elongation of the cleaning belt under continuous tension can be reduced.

[0041] The thickness, mesh density, and mesh hole size of the mesh base fabric can be selected according to the width of the endless wool cleaning tape, the target installation perimeter, and the equipment operating status, so as to meet the load-bearing requirements while ensuring that the mesh holes retain channels for air exchange after needle punching.

[0042] The mesh holes are distributed along the circumferential and width directions of the mesh base fabric, so that the endless wool cleaning tape can form corresponding breathable areas at different circumferential and width positions, avoiding excessive concentration of heat dissipation areas caused by setting breathable holes only in local areas.

[0043] Using nano bamboo charcoal fiber mesh as a load-bearing and breathable base can improve the dimensional stability of the endless wool cleaning strip without using dense canvas as a base, and provide a through air exchange base between the first and second wool cleaning layers, thereby helping to reduce the impact of circumferential elongation and local heat accumulation on cleaning stability during long-term operation.

[0044] As a further explanation of the first embodiment, both the first wool cleaning layer and the second wool cleaning layer are natural wool fiber layers, and the unit area mass of the wool flakes forming the first wool cleaning layer and the second wool cleaning layer is 180 g / m². 2 .

[0045] In practice, natural wool is selected as the layering material for both the first and second wool cleaning layers. After pretreatment, the natural wool is opened, combed, and evenly spread using a combing device to achieve a unit area mass of 180g / m². 2 Continuous wool flakes.

[0046] During the preparation of wool wadding, the wool distribution along the length and width directions can be kept relatively uniform by controlling the amount of wool raw material fed in and the web-laying and output states of the combing equipment. Subsequently, wool wadding of corresponding lengths is prepared according to the actual perimeter of the mesh base fabric and used to form the first wool cleaning layer and the second wool cleaning layer, respectively.

[0047] The unit area mass of the wool wadding was controlled to be 180g / m². 2 This allows the wool cleaning layer formed by needle punching to have a more consistent amount of wool in different locations, thereby reducing the situation where excessively thick wool in some areas leads to increased running resistance, or excessively thin wool in some areas reduces cleaning contact ability.

[0048] Natural wool fibers, after being needle-punched, form a cleaning layer with a fluffy fiber surface. When in contact with rollers or leather rollers, the abundant wool fibers create a flexible contact with the equipment surface, wiping and carrying away any adhering substances. At the same time, the wool fibers retain interconnected interfiber spaces, allowing the wool cleaning layer to maintain a certain degree of breathability while ensuring a clean contact area.

[0049] Using a natural wool fiber layer can also avoid the use of nylon flocking cleaning layers and their matching adhesive structures, which helps to reduce the static electricity buildup and heat blockage caused by synthetic fibers and adhesive structures under high-speed friction conditions, and improves the continuous cleaning effect on the rollers and skin rollers of roving frames or drawing frames.

[0050] As a further explanation of the first embodiment, the endless wool cleaning tape can be flipped inside out so that the first wool cleaning layer and the second wool cleaning layer respectively serve as working cleaning surfaces that come into contact with the roller or leather roller.

[0051] In practice, the first wool cleaning layer is placed on the outer periphery of the mesh base fabric, and the second wool cleaning layer is placed on the inner periphery of the mesh base fabric. Both wool cleaning layers can perform the actual cleaning function.

[0052] During initial use, the first wool cleaning layer can be positioned on the working outside of the endless wool cleaning belt, and in contact with the rollers or leather rollers of the roving frame or drawing frame. After the first wool cleaning layer has been used for a period of time, the endless wool cleaning belt can be removed from the cleaner, and the entire endless cylindrical belt can be turned inside out using a fabric turning device or manual assistance, so that the second wool cleaning layer moves to the working outside.

[0053] The flipped-over endless wool cleaning belt is reinstalled in the cleaner. At this time, the second wool cleaning layer becomes the new working cleaning surface and contacts the roller or leather roller, while the first wool cleaning layer turns to the inside.

[0054] In order to achieve the above-mentioned inward and outward flipping, the mesh base fabric, the first wool cleaning layer and the second wool cleaning layer together form a continuous and flexible endless cylindrical structure, which will not hinder the flipping of the belt during normal flipping operation due to the setting of rigid connectors or adhesive joints.

[0055] By setting working wool cleaning layers on both sides of the mesh base fabric, the same endless wool cleaning tape has two cleaning surfaces that can be used separately. This improves the effective utilization of a single cleaning tape without increasing equipment installation space and reduces material waste caused by replacing the entire product immediately after one side of the wool cleaning surface has reached its working state.

[0056] As a further explanation of the first embodiment, the mesh holes of the mesh base fabric are connected to the fiber gaps in the first wool cleaning layer and the second wool cleaning layer, respectively, to form a breathable heat dissipation channel for gas exchange along the thickness direction of the endless wool cleaning strip.

[0057] In practice, both the first and second wool cleaning layers are formed by needle punching a large number of natural wool fibers, with interconnected fiber gaps remaining between the wool fibers. The mesh holes on the mesh base fabric are continuous along the thickness direction and communicate with the fiber gaps in the wool cleaning layers on both sides.

[0058] During the needle punching process, the wool fibers and the mesh base fabric form a mechanical bond, but no adhesive is used to cover or fill the mesh holes. Therefore, the mesh holes are not completely sealed due to the continuous adhesive film. As a result, an air exchange path can be formed from the outside of the first wool cleaning layer to the outside of the second wool cleaning layer, which is connected sequentially by the fiber gaps of the first wool cleaning layer, the mesh holes, and the fiber gaps of the second wool cleaning layer.

[0059] When the first wool cleaning layer is used as the working cleaning surface, the heat generated by the roller or leather roller in contact with the first wool cleaning layer can be transferred through the fiber gaps of the first wool cleaning layer to the mesh holes, and then diffused from the mesh holes to the second wool cleaning layer and the surrounding air. When the endless wool cleaning belt is flipped over, and the second wool cleaning layer is used as the working cleaning surface, the heat can be transferred in the opposite direction through the same breathable heat dissipation channels.

[0060] This breathable and heat-dissipating structure, which runs through the thickness of the endless wool cleaning tape, does not require an additional independent heat dissipation device. It can improve air exchange conditions by utilizing the mesh holes of the mesh base fabric and the fiber gaps of the wool cleaning layer itself.

[0061] By improving the heat dissipation conditions in the contact area between the roller or leather roller and the endless wool cleaning belt, the possibility of frictional heat accumulating over a long period of time can be reduced. This reduces the likelihood of substances such as cotton wax and cotton sugar adhering more strongly and further adsorbing short fibers due to increased temperature, which helps to reduce the probability of tangling and wrapping of the roller and leather roller and improve the stability of the spinning process.

[0062] like Figure 2 As shown, the second embodiment of the present invention proposes a method for preparing the above-mentioned endless wool cleaning tape, comprising: The wool raw materials are sequentially washed, steamed, dried, and combed to form wool flakes; A mesh base fabric in the shape of an endless cylindrical shape is provided, and the mesh base fabric is sleeved on the two drive shafts of the needle punching device; The length of the wool wadding laid on the mesh base fabric is determined according to the perimeter of the mesh base fabric. The wool wadding is laid on one side of the mesh base fabric, so that the mesh base fabric moves circumferentially under the drive of the transmission shaft. The wool wadding and the mesh base fabric are needle-punched to form a first wool cleaning layer. The mesh base fabric with the first wool cleaning layer is flipped inside out, and the wool wadding is laid on the other side of the mesh base fabric and needle-punched to form the second wool cleaning layer. Select the corresponding electrothermal shaping mold according to the target installation circumference of the endless wool cleaning tape, and put the endless wool cleaning tape with double-sided needle punching on the electrothermal shaping mold for heat shaping, so that the endless wool cleaning tape forms a shaped circumference determined according to the target installation circumference.

[0063] In practice, natural wool is first selected as the raw material for the wool cleaning layer. The wool raw material is then washed to remove dust, dirt, and some grease adhering to the wool surface. After washing, the wool undergoes further steaming treatment to remove residual grease and impurities, and high-temperature treatment is used to reduce the residue of microorganisms and other contaminants in the wool raw material.

[0064] After steaming, the wool is dried to a state suitable for subsequent combing and needle punching. The dried wool is then fed into a combing machine, where the wool fibers are opened, separated, combed, and spread to form wool waddings of relatively uniform thickness and distribution.

[0065] The above-mentioned wool pretreatment can reduce the adverse effects of natural wool's own oils, dirt and other impurities on needle punching and subsequent spinning cleaning, and through combing, the wool fibers are transformed from a clumped state into a more uniform wavy state, providing a basis for forming a first wool cleaning layer and a second wool cleaning layer of uniform thickness.

[0066] The mesh base fabric is prefabricated into a continuous, endless cylindrical shape. The mesh base fabric with the appropriate circumference and width is selected according to the specifications of the endless wool cleaning tape to be prepared. The needle punching equipment is equipped with two drive shafts for supporting and driving the cylindrical mesh base fabric.

[0067] Before needle punching, an endless cylindrical mesh base fabric is fitted onto two drive shafts, so that the two drive shafts jointly support the mesh base fabric and drive it to continuously circumferentially circumferentially. The transmission speed of the drive shafts and the needle punching frequency of the needle punching device can be adjusted according to the actual needle punching needs, so that cylindrical mesh base fabrics of different circumferences can continuously pass through the needle punching area.

[0068] Prepare wool wadding of appropriate length according to the actual perimeter of the mesh base fabric, so that the wool wadding can be laid continuously along the entire circumference of the mesh base fabric. When the perimeter of the mesh base fabric is large, increase the laying length of the wool wadding accordingly; when the perimeter of the mesh base fabric is small, decrease the laying length of the wool wadding accordingly, in order to avoid circumferential gaps caused by insufficient wool wadding length or excessive overlap caused by excessive wool wadding length.

[0069] Wool wadding is laid flat on one side of the mesh base fabric. The drive shaft and needle punching mechanism are activated, causing the mesh base fabric and the wool wadding laid on its surface to continuously pass through the needle punching area. The needles repeatedly pierce the wool wadding and the mesh base fabric, causing the wool fibers to mechanically bond with the mesh base fabric, thereby forming a first wool cleaning layer on one side of the mesh base fabric.

[0070] After the first wool cleaning layer is completed, the mesh base fabric with the first wool cleaning layer is removed from the needle punching device, and the endless cylindrical strip is turned inside out using a fabric turning device, so that the side that was originally on the inside and had not yet formed a wool cleaning layer is turned to the outside.

[0071] The flipped mesh base fabric is re-attached to the two drive shafts of the needle punching equipment. Wool wadding of the corresponding length is then laid on the other side of the mesh base fabric and needle punched according to the corresponding needle punching process to form a second wool cleaning layer.

[0072] The process involves needle punching one side and then flipping the entire product inside out to perform needle punching on the other side. This allows the first and second wool cleaning layers to be processed at positions facing the needle punching mechanism, facilitating control over the laying and needle punching of the wool wadding on both sides and creating two wool cleaning surfaces for actual cleaning work.

[0073] After completing the double-sided needle punching, select the appropriate electrothermal setting mold according to the target installation circumference of the roving frame or drawing frame to which the endless wool cleaning tape to be prepared is located. Place the endless wool cleaning tape around the outer circumference of the electrothermal setting mold so that the tape is constrained by the corresponding circumference dimension during the electrothermal setting process.

[0074] The endless wool cleaning tape is heated using an electrothermal setting mold, which sets the needle-punched mesh base fabric, the first wool cleaning layer, and the second wool cleaning layer to a predetermined circumference. After heat setting, the endless wool cleaning tape is removed from the electrothermal setting mold. The electrothermal setting mold restricts the circumferential dimensions of the tape during the heat setting process, ensuring that the endless wool cleaning tape forms a set circumference determined according to the target installation circumference.

[0075] Through the above manufacturing process, the wool raw material is cleaned, the wool wadding is combed and shaped, the endless mesh base fabric is double-sided needle punched, and the final circumference heat setting is connected in sequence. The mesh base fabric bears the foundation of size and load, the natural wool layers on both sides bear the cleaning function, the mesh holes and fiber gaps form a breathable heat dissipation path, and the product size is controlled by the final heat setting.

[0076] The above preparation method is different from the manufacturing method of electrostatic flocking after applying glue to the surface of dense canvas, and also different from the manufacturing method of directly circular weaving wool and then surface napping. It helps to reduce the air impermeability problem caused by the adhesive layer and the circumferential elongation problem of the circular webbing body after continuous use.

[0077] As a further explanation of the second embodiment, the wool raw material is washed and steamed to remove grease and impurities. After drying, the steamed wool raw material is sent to a combing device for combing to form a unit area mass of 180g / m². 2 The wool floss described above.

[0078] In practice, the natural wool raw material first enters the cleaning process, which removes mud, dust, dirt, and removable grease from the surface of the wool. After cleaning, the wool is steamed or boiled in a high-temperature water environment to further clean the wool fibers and reduce the residue of grease, impurities, and microorganisms in the wool raw material.

[0079] After steaming, the wool is dried to restore the wool fibers to a dry and loose state suitable for combing. The dried wool is then fed into a combing machine for opening, combing, and continuous spreading.

[0080] During the combing process, the wool feed rate and the operating status of the combing equipment are adjusted to control the unit area mass of the output wool wadding to 180g / m². 2 This ensures that the wool distribution in different locations of the wool wadding remains relatively uniform.

[0081] No fluorescent whitening agents, fluorescent dyes, or fluorescent finishing auxiliaries are added during the processing of wool raw materials. The resulting product has a unit area mass of 180 g / m². 2 After the wool wadding is processed, samples are taken from the beginning, middle and end positions of the wool wadding, and each sampling position is irradiated and detected using 365nm ultraviolet light.

[0082] If no bright white characteristic fluorescence corresponding to the fluorescent whitening agent control sample is observed at any sampling location, the batch of wool wadding will be used for subsequent needle punching processing. If bright white characteristic fluorescence corresponding to the fluorescent whitening agent control sample is observed at any sampling location, the batch of wool wadding will be isolated, and the wool raw materials will be washed and boiled again, or the wool raw materials will be replaced with wool raw materials without fluorescent whitening agents.

[0083] For example, using a unit area mass of 180g / m² 2 When preparing the endless wool cleaning tape from wool wadding, samples were taken from the beginning, middle, and end positions of the wool wadding and observed under 365nm ultraviolet light. After no bright white characteristic fluorescence appeared at any of the three detection positions, the wool wadding from the same batch was laid on the surface of the endless cylindrical mesh base fabric and needle-punched.

[0084] The resulting wool flakes are prepared to the appropriate length according to the perimeter of the mesh base fabric, and are used as the needle punching raw materials for the first wool cleaning layer and the second wool cleaning layer, respectively.

[0085] By completing the washing, steaming, drying, and combing processes before needle punching, the adverse effects of grease and impurities in untreated natural wool on roller or leather cleaning can be reduced, while simultaneously achieving 180g / m 2 The uniform wool flakes control the amount of wool used in the cleaning layers on both sides, so that the final cleaning surface has a relatively uniform thickness and wool distribution.

[0086] As a further explanation of the second embodiment, the laying length of the wool wadding is determined according to the perimeter of the mesh base fabric, and the needle punching frequency of the needle punching device and the transmission speed of the transmission shaft are adjusted respectively, so that the wool wadding is continuously laid along the entire circumference of the mesh base fabric and the needle punching is completed.

[0087] In practice, the perimeter of the cylindrical mesh base fabric is determined according to the specifications of the endless wool cleaning tape to be produced, and the required laying length of the wool wadding is determined according to the perimeter.

[0088] When the wool wadding is laid along the circumference of the mesh base fabric, its effective laying length should be able to cover the entire circumference of the mesh base fabric, so that the wool wadding remains continuous in the beginning and end areas after the mesh base fabric is continuously circumferentially ...

[0089] Both the needle-punching frequency and the transmission speed of the drive shaft of the needle-punching equipment are adjustable. The needle-punching frequency determines the number of times the needle punches the wool wadding and the mesh base fabric per unit time, while the transmission speed determines the circumferential length of the mesh base fabric passing through the needle-punched area per unit time.

[0090] When producing endless wool cleaning tapes of different specifications, the needle punching frequency and transmission speed can be adjusted according to the actual needle punching state, so that the wool wadding can pass through the needle punching area continuously and smoothly with the mesh base fabric, and different circumferential positions can receive the needle punching action.

[0091] By determining the length of the wool wadding based on the perimeter of the mesh base fabric and allowing the needle punching frequency and transmission speed to be adjusted separately, the same needle punching equipment can be applied to cylindrical mesh base fabrics with different perimeter specifications. At the same time, it reduces the occurrence of significant accumulation, slippage, or insufficient circumferential coverage of wool wadding during the needle punching process, and improves the consistency of the formation state of the first wool cleaning layer and the second wool cleaning layer along the circumferential direction.

[0092] As a further explanation of the second embodiment, before laying the wool wadding on the surface of the mesh base fabric, the actual perimeter of the mesh base fabric is measured, and the laying length of the wool wadding is determined based on the actual perimeter. The laying length of the wool wadding is determined by the sum of the actual perimeter of the mesh base fabric and the overlap length at both ends, wherein the overlap length at both ends is used to ensure that the wool wadding forms a continuous cover at the circumferential connection position of the mesh base fabric.

[0093] After the wool wadding is laid out, the total needle density of the wool cleaning layer is determined based on the needle frequency, drive shaft speed, and circumferential cycle number of the needle punching equipment. The needle density per unit length is determined by the ratio of the needle frequency to the drive shaft speed, and the total needle density is determined by the product of the needle density per unit length and the circumferential cycle number.

[0094] Specifically, let the actual perimeter of the mesh base fabric be C, the overlap length of the wool wadding be L, the needle punching frequency of the needle punching device be f, the speed of the drive shaft be v, and the number of circumferential cycles be n, then the length of the wool wadding is: Lp = C + L; The total needle density is: Np = n × f ÷ v.

[0095] Where Lp is the length of the wool wadding, Np is the total needle-punching density, C and L are in meters, f is in times / minute, v is in meters / minute, and n is the number of complete circumferential cycles of the mesh base fabric through the needle-punched area.

[0096] For example, if the actual perimeter of the mesh base fabric is 2.40 meters, and the overlap length of the wool wadding is set to 0.06 meters, then the laying length of the wool wadding is 2.46 meters. If the needle punching frequency is set to 500 times per minute, the drive shaft speed is set to 1.00 meter per minute, and the mesh base fabric completes three consecutive circumferential cycles, then the total needle punching density is 1500 times / meter. When producing the same specification of endless wool cleaning tape, maintain the wool wadding's unit area mass at 180 g / m². 2 The wool wadding is laid and needled according to the above-mentioned laying length and total needle-punching density.

[0097] When the actual perimeter of the mesh base fabric changes, the length of the wool wadding should be re-determined according to the new actual perimeter. When it is necessary to maintain a constant total needle-punching density, the drive shaft speed or needle-punching frequency should be adjusted according to the new mesh base fabric perimeter and equipment operating status. After adjusting the drive shaft speed, the connection positions of the wool wadding ends should be rechecked to ensure that the wool wadding ends overlap and cover each other.

[0098] During the needle punching process, the circumferential reference position on the mesh base fabric is used as the starting position of the cycle. After the circumferential reference position completes a full circumferential movement, one circumferential cycle is recorded. After completing the first circumferential cycle, the coverage status of the wool wadding at the beginning and end connection positions is checked. If there are uncovered areas at the beginning and end positions, the overlap length of the wool wadding at the beginning and end positions is increased. If there is local accumulation at the beginning and end positions, the overlap length of the wool wadding at the beginning and end positions is decreased, and the wool wadding is re-laid.

[0099] By linking the actual perimeter of the mesh base fabric, the length of the wool wadding, the needle punching frequency, the speed of the drive shaft, and the number of circumferential cycles, the circumferential coverage of the wool wadding and the needle punching density are controlled synchronously, reducing the problems of insufficient wool wadding length, discontinuous coverage at the beginning and end connection positions, and inconsistent local needle punching density.

[0100] As a further explanation of the second embodiment, the acupuncture frequency of the acupuncture device is 500 times per minute; During the formation of the first wool cleaning layer, the mesh base fabric is continuously needled in three circumferential cycles. After the first wool cleaning layer is needled, the mesh base fabric is flipped inside out, and three circumferential cycles of needle punching are continuously performed on the other side of the mesh base fabric using the same needle punching frequency and transmission speed as when the first wool cleaning layer was formed, in order to form the second wool cleaning layer.

[0101] In practice, the needling frequency of the needling device is set to 500 times per minute, so that the needles continuously puncture the wool floss and mesh base fabric in the needling area at a stable frequency.

[0102] After the first layer of wool wadding is laid, the drive shaft is activated, causing the mesh base fabric to continuously circulate along the two drive shafts. One circumferential cycle refers to any reference position on the cylindrical mesh base fabric moving around the entire circumference once and then reaching the corresponding needle-punching position again.

[0103] When forming the first wool cleaning layer, the mesh base fabric is continuously needled through three complete circumferential cycles, allowing each area of ​​the mesh base fabric to repeatedly pass through the needled area and receive repeated needled action, thereby improving the uniformity of the mechanical consolidation state of the first wool cleaning layer along the entire circumference.

[0104] After the first wool cleaning layer completes three circumferential cycles, the endless cylindrical mesh base fabric is flipped inside out, and wool wadding is laid on the other side.

[0105] When forming the second wool cleaning layer, the same needle-punching frequency of 500 times per minute and the same transmission speed as when forming the first wool cleaning layer are used, and the mesh base fabric is also continuously needled for three circumferential cycles.

[0106] The first and second wool cleaning layers use the same needle punching frequency, transmission speed, and circumferential cycle number to keep the processing conditions of the two wool cleaning surfaces consistent, which is beneficial to make the wool cleaning layers on both sides have a more consistent layering state and cleaning performance.

[0107] Performing three consecutive circumferential cycles allows the mesh base fabric to repeatedly pass through the needle-punched area at different circumferential positions, improving the continuity and uniformity of the mechanical bonding between the wool fibers and the mesh base fabric, and reducing the situation where the local bonding of the wool cleaning layer is weak due to insufficient local needle punching.

[0108] In another double-sided needle-punching process of the second embodiment, after the first wool cleaning layer is needle-punched, the layer thickness and air permeability of the first wool cleaning layer are tested, and the needle-punching parameters of the second wool cleaning layer are determined based on the test results. The layer thickness test is performed under a specified pressure, and the air permeability test is performed by forming a specified pressure difference on both sides of the first wool cleaning layer and measuring the volume of air passing through per unit time.

[0109] Multiple testing locations were evenly selected along the circumference of the first wool cleaning layer, and the layer thickness and air permeability were measured at each location. The layer thickness test results at each testing location were averaged to obtain the average layer thickness of the first wool cleaning layer; the air permeability test results at each testing location were averaged to obtain the average air permeability of the first wool cleaning layer.

[0110] The average thickness and average air permeability of the first wool cleaning layer were compared with the target thickness and target air permeability, respectively. When both the average thickness and average air permeability were higher than the corresponding target values, it indicated that the fiber layer of the first wool cleaning layer was relatively loose. In this case, the speed of the drive shaft was reduced or the needle punching frequency was increased to improve the needle punching density of the second wool cleaning layer. When both the average thickness and average air permeability were lower than the corresponding target values, it indicated that the fiber layer of the first wool cleaning layer was highly compacted. In this case, the speed of the drive shaft was increased or the needle punching frequency was reduced to decrease the needle punching density of the second wool cleaning layer.

[0111] The target layer thickness and target air permeability were determined based on samples prepared using the same mesh base fabric, the same wool raw material, and the same unit area mass of wool wadding. During sample preparation, the unit area mass of the wool wadding was set to 180 g / m², and three circumferential cycles of needle punching were performed using different needle punching frequencies and different drive shaft speeds. The layer thickness and air permeability of each sample were then measured. The test results that met the requirements for clean layer thickness and breathability / heat dissipation were determined as the target layer thickness and target air permeability.

[0112] For example, with the same mesh base fabric and 180g / m 2 Under wool wadding conditions, the target layer thickness was determined to be 3.0 mm and the target air permeability to be 380 L / (m²) through sample testing. 2 ·s). After the first wool cleaning layer completed three circumferential cycles of needle punching, four detection positions were evenly selected circumferentially, and the layer thicknesses were measured to be 3.1mm, 3.2mm, 3.2mm, and 3.1mm, with an average layer thickness of 3.15mm; the air permeability was measured to be 410L / (m). 2 ·s), 420L / (m 2 ·s), 415L / (m 2 ·s) and 415L / (m 2 The average air permeability is 415 L / (m²). 2 (s). Since both the average layer thickness and average air permeability are higher than the target values, the target needle density of the second wool cleaning layer is increased by 10%.

[0113] With the needling frequency maintained at 500 times per minute and the second wool cleaning layer also completing three circumferential cycles, the drive shaft speed of the second wool cleaning layer was adjusted from 1.00 meters per minute to 0.91 meters per minute. At this point, the total needling density of the second wool cleaning layer was calculated and determined based on three circumferential cycles, a needling frequency of 500 times per minute, and a drive speed of 0.91 meters per minute. After completing the needling of the second wool cleaning layer, the layer thickness and air permeability of both wool cleaning layers were re-tested, and the difference in layer thickness and air permeability between the two wool cleaning layers was calculated.

[0114] When the difference in layer thickness and air permeability between the two wool cleaning layers are within the corresponding allowable range, the double-sided needle punching process is completed; when the difference in layer thickness or air permeability exceeds the corresponding allowable range, the needle punching frequency on the second side or the running speed of the drive shaft of the next endless wool cleaning belt of the same specification is adjusted according to the excess item.

[0115] By adjusting the needle-punching parameters of the second wool cleaning layer according to the actual layering state of the first wool cleaning layer, the structural state of the second wool cleaning layer is made to compensate for that of the first wool cleaning layer, reducing the inconsistency in the thickness and breathability of the two cleaning layers caused by differences in wool raw material distribution, mesh base fabric support state, or needle-punching process.

[0116] As a further explanation of the second embodiment, the electrothermal shaping mold is an electrothermal guide roller mold, and multiple electrothermal guide roller molds with different outer circumferences are pre-configured. The outer circumference of each electrothermal guide roller mold is determined according to the corresponding target installation circumference. Select the corresponding electric heating roller mold according to the target installation circumference of the endless wool cleaning tape to be prepared, and put the endless wool cleaning tape with the first wool cleaning layer and the second wool cleaning layer needle punched on the outer circumference of the electric heating roller mold, and perform heat setting under the condition that the circumferential dimension is constrained by the electric heating roller mold.

[0117] In practice, multiple electric heating guide roller molds with different outer circumferences are pre-configured according to the different specifications of roving frames, drawing frames and their cleaners that need to be adapted to the actual production process.

[0118] Each heated guide roller mold corresponds to a target installation circumference, or a set of endless wool cleaning tape products with the same installation circumference requirement. The outer circumferential dimensions of the heated guide roller mold are determined based on the target installation circumference of the corresponding endless wool cleaning tape, so that the endless wool cleaning tape is subject to circumferential dimensional constraints after being fitted onto the outer circumference of the heated guide roller mold.

[0119] After completing the needle punching of the first and second wool cleaning layers, first determine the target installation circumference of the roving frame or drawing frame corresponding to the endless wool cleaning strip, and then select the corresponding specification from multiple electric heating guide roller molds of different specifications.

[0120] The double-sided needle-punched endless wool cleaning tape is placed around the selected electric heating guide roller mold, so that the entire circumference of the tape is limited by the outer circumference of the electric heating guide roller mold, and then the electric heating shaping process is started.

[0121] During the heating process, the mesh base fabric, the first wool cleaning layer, and the second wool cleaning layer are shaped under the circumferential constraint of the electric heating guide roller mold, so that the circumferential dimensions of the final product are controlled by the corresponding mold.

[0122] After heat setting, the endless wool cleaning tape is removed from the heated roller mold. For products with different target installation circumferences, the corresponding size setting is completed by selecting heated roller molds with different outer circumferences, eliminating the need to manually stretch or simply cut to correct the circumference of the endless wool cleaning tape after needle punching.

[0123] By using the above method, a correspondence can be established between the final circumference of the endless wool cleaning tape and the outer circumference of the electric heating guide roller mold, thereby improving the dimensional consistency between products of the same specification.

[0124] Because the installation dimensions of the endless wool cleaning belt in roving frames and drawing frames are relatively strict, insufficient tension and unstable operation are likely to occur when the product circumference is too large, while installation difficulties or excessive tension are likely to occur when the product circumference is too small. Therefore, by selecting the electric heating guide roller mold according to the target installation circumference and performing heat setting under the mold constraint, the installation adaptability and operational stability of the endless wool cleaning belt can be improved.

[0125] As a further explanation of the second embodiment, after the needle punching of the first wool cleaning layer and the second wool cleaning layer is completed, a heat setting test is performed on the endless wool cleaning strip to determine the amount of circumference change between the outer circumference of the electric heating roller mold and the stable circumference of the endless wool cleaning strip after cooling.

[0126] The heat setting test used the same mesh base fabric, wool raw material, wool wadding unit area mass, and needle punching process as the endless wool cleaning tape to be prepared. The endless wool cleaning tape with double-sided needle punching was placed around the outer periphery of the electrically heated guide roller mold, and heat setting was performed while the tape was circumferentially constrained by the mold. After heat setting, the endless wool cleaning tape was cooled to room temperature, and then the stable circumference of the endless wool cleaning tape was measured.

[0127] The outer perimeter of the electric heating roller mold before heat setting is compared with the stable perimeter of the endless wool cleaning tape after cooling to obtain the perimeter change of the endless wool cleaning tape of the corresponding specification. The perimeter change includes the circumferential shrinkage or circumferential elongation of the tape body during the heat setting process.

[0128] When preparing a new endless wool cleaning tape, first obtain the target installation circumference of the cleaner to be installed on the roving frame or drawing frame. Then, determine the outer circumference of the electric heating guide roller mold based on the circumference change obtained from heat setting tests of the same specifications. When the heat setting test shows that the endless wool cleaning tape shrinks circumferentially after cooling, set the outer circumference of the electric heating guide roller mold to be greater than the target installation circumference; when the heat setting test shows that the endless wool cleaning tape elongates circumferentially after cooling, set the outer circumference of the electric heating guide roller mold to be less than the target installation circumference.

[0129] For example, the target installation perimeter of the unlined wool cleaning tape to be prepared is 1000 mm. The same mesh base fabric with a strength of 180 g / m² is used. 2 After completing double-sided needle punching with wool wadding, a needle punching frequency of 500 times per minute, and three circumferential cycles, the heat setting test showed that the endless wool cleaning belt corresponding to the electric heating roller mold with an outer circumference of 1008mm had a stable circumference of 1000mm after cooling. Therefore, the electric heating roller mold with an outer circumference of 1008mm was used as the heat setting mold for this product specification.

[0130] The double-sided needle-punched, endless wool cleaning tape is fitted onto the outer circumference of the selected electric heating guide roller mold, and heat-set while the tape is constrained circumferentially by the mold. During the heat-setting process, three circumference measurement positions—left, middle, and right—are selected along the width direction of the endless wool cleaning tape, and the tape circumference at each measurement position is measured.

[0131] For example, after heat setting and cooling, the stable perimeter of the left detection position is 1000 mm, the stable perimeter of the middle detection position is 999 mm, and the stable perimeter of the right detection position is 1001 mm. The maximum perimeter difference between the three detection positions is then 2 mm. This maximum perimeter difference is compared with a predetermined allowable difference in circumferential dimensions. When the maximum perimeter difference is within the allowable range, the circumferential dimension of the endless wool cleaning tape is confirmed to meet the requirements.

[0132] When the stable perimeter after cooling is greater than the target installation perimeter, record the positive difference between the stable perimeter and the target installation perimeter, and select an electric heating roller mold with a smaller outer perimeter in the next preparation process of the same specification of endless wool cleaning tape, or correct the selection of the electric heating roller mold according to the perimeter change obtained from the heat setting test; when the stable perimeter after cooling is less than the target installation perimeter, select an electric heating roller mold with a larger outer perimeter.

[0133] For endless wool cleaning strips with different target installation circumferences, establish the correspondence between the target installation circumference, the outer circumference of the electric heating guide roller mold, and the stable circumference after cooling, and select the corresponding electric heating guide roller mold according to the target installation circumference of the product to be prepared.

[0134] By first conducting heat setting tests of the same specifications and then selecting the electric heating guide roller mold based on the circumference change, the final stable circumference of the endless wool cleaning tape is made to correspond with the target installation circumference of the roving frame or drawing frame. This reduces the circumference deviation caused by recutting or manual stretching after heat setting, and improves the installation adaptability and operational stability of the endless wool cleaning tape.

[0135] In practical use, the endless wool cleaning belt is installed on the cleaner of the roving frame or drawing frame and is driven by the cleaner's transmission mechanism to circulate. The first or second wool cleaning layer serves as the working cleaning surface and continuously contacts the rollers or leather rollers to clean short fibers, cotton, cotton wax, cotton sugar, and other impurities adhering to the surface of the rollers or leather rollers.

[0136] During the cyclic operation, the mesh base fabric bears the main circumferential load of the endless wool cleaning belt, and forms an air exchange path with the fiber gaps in the first and second wool cleaning layers through its mesh holes, so as to improve the heat dissipation conditions of the belt body in contact with the rollers or leather rollers.

[0137] After the first wool cleaning layer has been used, the endless wool cleaning strip can be turned inside out so that the second wool cleaning layer can continue to be used as the working cleaning surface, thereby making full use of the natural wool cleaning layers formed on both sides of the mesh base fabric.

[0138] Compared to cleaning strips made from dense canvas, adhesives, and nylon flocking, this invention eliminates the adhesive layer and utilizes the mesh openings of the mesh base fabric and the gaps between the wool fibers to create a breathable structure, reducing the obstruction of air exchange caused by the adhesive layer. Using natural wool to form the cleaning surface reduces the possibility of charge buildup from synthetic fiber fluff during high-speed friction. Combined with breathable heat dissipation channels running through the thickness of the endless wool cleaning strip, it minimizes the continuous accumulation of frictional heat and static charge in the cleaning contact area.

[0139] Compared with cylindrical cleaning belts formed by circular knitting and then napping, this invention uses a mesh base fabric to bear the main circumferential load, and performs heat setting according to the target installation circumference after double-sided needle punching, which can reduce the possibility of dimensional changes caused by continuous stretching of the belt during long-term operation.

[0140] By continuously contacting the natural wool cleaning surface with the rollers or leather rollers, the removal of short fibers, cotton wax, cotton sugar, and other adhering substances can be enhanced. The breathable heat dissipation structure reduces the possibility of frictional heat accumulation over a long period of time, which may cause the adhering substances to further adhere. This reduces roller and leather roller entanglement, yarn smudges, and the resulting yarn defects.

[0141] By improving the tensile strength of the mesh base fabric and combining it with circumferential heat setting, the circumferential elongation of the endless wool cleaning belt during long-term cyclic operation can be reduced, the frequency of tension adjustment due to belt size changes in the cleaner can be reduced, and the product maintenance and replacement cycle can be extended.

[0142] During the long-term trial production process, the inventors discovered that, compared with traditional flocked tape and circular woven tape, the endless wool cleaning tape, which combines endless mesh base fabric, double-sided needle punching of natural wool, and circumference heat setting, can improve the cleaning effect on short fibers, cotton wax, cotton sugar and other adhering substances on the roller and leather roller surfaces, and reduce the continuous accumulation of heat generated by high-speed friction in the cleaning contact area.

[0143] Therefore, this invention, through the combination of an endless mesh base fabric, a first wool cleaning layer, a second wool cleaning layer, a double-sided needle-punched structure, and heat setting according to the target installation perimeter, enables the endless wool cleaning tape to simultaneously possess dimensional stability, double-sided use, breathability and heat dissipation, and the ability to continuously clean rollers and ferrules. It is suitable for working environments in roving frames and drawing frames where rollers and ferrules rotate continuously and where cotton wax, cotton sugar, short fibers adhere, and cotton entanglement or wrapping occurs.

[0144] The terms “first”, “second”, etc., are used to distinguish similar objects, not to describe or indicate a specific order or sequence.

[0145] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0146] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. An endless wool cleaning belt for use on roving frames or drawing frames, characterized in that, It includes a mesh base fabric in the shape of an endless cylindrical shape, a first wool cleaning layer and a second wool cleaning layer; The first wool cleaning layer is disposed on the outer peripheral surface of the mesh base fabric, and the second wool cleaning layer is disposed on the inner peripheral surface of the mesh base fabric. Both the first wool cleaning layer and the second wool cleaning layer are made of wool wadding that is mechanically bonded to the mesh base fabric by needle punching. The mesh base fabric has mesh holes that extend through the thickness direction, and no adhesive layer is provided between the first wool cleaning layer and the second wool cleaning layer and the mesh base fabric; The first wool cleaning layer and the second wool cleaning layer respectively form wool cleaning surfaces for contact with the rollers or leather rollers of the roving frame or drawing frame; The endless wool cleaning tape is heat-set to form a predetermined circumference, which is determined based on the installation circumference of the endless wool cleaning tape on the roving frame or drawing frame.

2. The endless wool cleaning tape according to claim 1, characterized in that, The mesh base fabric is made of nano bamboo charcoal fiber material, and the mesh holes are distributed along the circumferential and width directions of the mesh base fabric.

3. The endless wool cleaning tape according to claim 1, characterized in that, Both the first and second wool cleaning layers are natural wool fiber layers, and the unit area mass of the wool flakes forming the first and second wool cleaning layers is 180 g / m². 2 .

4. The endless wool cleaning tape according to claim 1, characterized in that, The endless wool cleaning tape can be flipped inside out so that the first wool cleaning layer and the second wool cleaning layer respectively serve as working cleaning surfaces that come into contact with the roller or leather roller.

5. The endless wool cleaning tape according to any one of claims 1-4, characterized in that, The mesh holes of the mesh base fabric are connected to the fiber gaps in the first wool cleaning layer and the second wool cleaning layer, respectively, to form a breathable heat dissipation channel for gas exchange along the thickness direction of the endless wool cleaning strip.

6. A method for preparing the endless wool cleaning tape according to any one of claims 1-5, characterized in that, include: The wool raw materials are sequentially washed, steamed, dried, and combed to form wool flakes; A mesh base fabric in the shape of an endless cylindrical shape is provided, and the mesh base fabric is sleeved on the two drive shafts of the needle punching device; The length of the wool wadding laid on the mesh base fabric is determined according to the perimeter of the mesh base fabric. The wool wadding is laid on one side of the mesh base fabric, so that the mesh base fabric moves circumferentially under the drive of the transmission shaft. The wool wadding and the mesh base fabric are needle-punched to form a first wool cleaning layer. The mesh base fabric with the first wool cleaning layer is flipped inside out, and the wool wadding is laid on the other side of the mesh base fabric and needle-punched to form the second wool cleaning layer. Select the corresponding electrothermal shaping mold according to the target installation circumference of the endless wool cleaning tape, and put the endless wool cleaning tape with double-sided needle punching on the electrothermal shaping mold for heat shaping, so that the endless wool cleaning tape forms a shaped circumference determined according to the target installation circumference.

7. The preparation method according to claim 6, characterized in that, The wool raw material is washed and steamed to remove grease and impurities. After being dried, the steamed wool raw material is sent to a combing device for combing to form wool wadding with a unit area mass of 180g / m².

8. The preparation method according to claim 6, characterized in that, The length of the wool wadding is determined according to the perimeter of the mesh base fabric, and the needle punching frequency of the needle punching device and the transmission speed of the transmission shaft are adjusted respectively to make the wool wadding continuously laid along the entire circumference of the mesh base fabric and complete the needle punching.

9. The preparation method according to claim 8, characterized in that, The acupuncture frequency of the acupuncture device is 500 times per minute; During the formation of the first wool cleaning layer, the mesh base fabric is continuously needled in three circumferential cycles. After the first wool cleaning layer is needled, the mesh base fabric is flipped inside out, and three circumferential cycles of needle punching are continuously performed on the other side of the mesh base fabric using the same needle punching frequency and transmission speed as when the first wool cleaning layer was formed, in order to form the second wool cleaning layer.

10. The preparation method according to any one of claims 6-9, characterized in that, The electrothermal shaping mold is an electrothermal guide roller mold. Multiple electrothermal guide roller molds with different outer circumferences are pre-configured. The outer circumference of each electrothermal guide roller mold is determined according to the corresponding target installation circumference. Select the corresponding electric heating roller mold according to the target installation circumference of the endless wool cleaning tape to be prepared, and put the endless wool cleaning tape with the first wool cleaning layer and the second wool cleaning layer needle punched on the outer circumference of the electric heating roller mold, and perform heat setting under the condition that the circumferential dimension is constrained by the electric heating roller mold.

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