Reed for glass fiber and production method thereof

Abstract

The invention discloses a reed for glass fibers and a production method of the reed, and relates to the field of reeds, the key points of the technical scheme are as follows: the reed comprises a plurality of special-shaped reed wire units and a plurality of single-peak reed wire units, and the special-shaped reed wire units and the single-peak reed wire units are alternately arranged in sequence; each special-shaped reed wire unit comprises an upper hump and a lower hump, an air flow groove is formed between the upper hump and the lower hump, and each single-hump reed wire unit comprises a single hump. The special-shaped reed wire units and the single-peak reed wire units are arranged, so that the opening of the loom is clear, the reed beating-up is prevented from colliding with warp yarns, and the glass fiber fluffing and the influence on the cloth cover quality are avoided.

Description

Technical Field

[0001] The invention relates to the field of steel reeds, and more particularly to a steel reed for glass fiber and a production method thereof. Background Art

[0002] The reed is a key component used in textile equipment, mainly used for separation, arrangement and tension control of warp yarns.

[0003] In the prior art, glass fiber cloth can be applied to copper clad laminates. Glass fiber cloth is made of glass fiber woven by a jet spinning machine. However, glass fiber is a hard and brittle material, and its surface is easily scratched or damaged. Once it has fuzzing, glass fiber cloth is no longer suitable for copper clad laminates. When glass fiber frequently contacts or rubs against a reed blade that has not been specially treated, the surface fibers are prone to breakage or shedding, resulting in fuzzing.

[0004] Therefore, new solutions need to be proposed to solve this problem. Summary of the invention

[0005] In view of the shortcomings of the prior art, the present invention aims to provide a steel reed for glass fiber and a production method thereof to avoid the fluffing of glass fiber and affect the quality of the fabric. The above technical purpose of the present invention is achieved through the following technical scheme: the steel reed for glass fiber includes a plurality of special-shaped reed blade units and a plurality of single-peak reed blade units, and the special-shaped reed blade units and single-peak reed blade units are arranged alternately in sequence.

[0006] The present invention is further configured as follows: the special-shaped reed blade unit includes an upper hump and a lower hump, an air flow groove is formed between the upper hump and the lower hump, and the single-humped reed blade unit includes a single hump.

[0007] The present invention is further configured such that: the orthographic projection of the single hump on the special-shaped reed blade unit coincides with the upper hump.

[0008] The present invention is further configured as follows: the special-shaped reed blade unit and the single-peak reed blade unit are both made of 30Cr13 stainless steel.

[0009] The present invention is further configured as follows: the surfaces of the special-shaped reed blade unit and the single-peak reed blade unit are provided with a DLC coating.

[0010] A method for producing a reed comprises the following steps: S1, material cutting and stamping: cutting the stainless steel sheet into a preliminary shape of the required size, and forming the cut stainless steel sheet through a stamping device to obtain a special-shaped reed blade unit with an upper hump, a lower hump and an air flow groove structure; a single-hump reed blade unit can be processed into a single hump shape through a similar stamping process; S2, grinding and deburring: Deburring is performed on the parts after cutting and stamping to ensure that there are no sharp edges or irregular parts to avoid affecting subsequent assembly; S3, workpiece cleaning: Use ultrasonic cleaning equipment with a frequency between 25-40 kHz. The cleaning agent is a mixed solution of deionized water and neutral cleaning liquid to remove surface oil, dust and other pollutants. The ultrasonic cleaning time is controlled within 10-15 minutes to ensure thorough cleaning; Nitrogen drying: Use high-purity nitrogen (≥99.99%) to dry the cleaned special-shaped reed blade units and single-peak reed blade units, especially in the complex-shaped air flow grooves, humps and other parts to ensure that no moisture is left; S4, heating to a suitable temperature: turn on the heater in the vacuum chamber, heat the vacuum chamber and the workpiece to 100℃-180℃, and ensure that the temperature is evenly distributed. For the complex-shaped special-shaped reed blade unit, multi-point temperature control is required, and a constant temperature is maintained during the coating process, and the temperature error is controlled within ±5℃; S5, ion beam cleaning: first, evacuate the vacuum chamber, then introduce high-purity argon gas with a purity of more than 5N, and maintain the vacuum degree of the vacuum chamber between 0.1-0.2 Pa, turn on the ion beam power supply, and perform ion cleaning on the surface of the special-shaped reed unit and the single-peak reed unit. The working voltage is set to 1000V-1500V, the current range is 50-100mA, and the cleaning time is controlled within 15-30 minutes; Apply pulse bias: During the ion cleaning process, apply a pulse bias of 500V-1500V and control the duty cycle to 25%-50%; S6, preparation of metal transition layer: maintain vacuum degree: between 0.1-2 Pa, turn on the multi-arc arc source, and conduct the current to the cathode arc source with Cr target or Ti target; deposition conditions: the current of the DC power supply is greater than 60A, and a pulse bias of 300V-500V is applied to the workpiece, with a duty cycle of 30%-50%, and the deposition time of the metal transition layer is 15-45 minutes to ensure that the layer thickness is uniform and firm; S7, depositing DLC ​​coating: hydrocarbon gas introduction: introduce methane (CH4) or other hydrocarbon gases into the vacuum chamber, and control the vacuum degree between 0.05-0.5 Pa; DLC coating deposition: turn on the ion beam power supply, start the DLC coating deposition process, the working voltage applied to the ion beam is greater than 1000V, and the current range is 50-300mA; S8, cooling process: After the coating deposition is completed, turn off the ion beam power supply, bias power supply, gas source and heating power supply, maintain the vacuum chamber in the evacuation state, and gradually cool down. In order to avoid coating cracks caused by thermal stress, the cooling process needs to be controlled within 45-60 minutes to ensure that the temperature of the workpiece slowly drops to room temperature.

[0011] The present invention is further configured as follows: in S5, the vacuum chamber is first evacuated to a vacuum degree of at least 5×10-3 Pa. In order to ensure the stability of the deposition process, the target vacuum degree is 10-4 Pa, providing a low-impurity environment for subsequent ion cleaning and deposition processes.

[0012] The present invention is further configured as follows: high-frequency pulse voltage technology is used in S7; a pulse bias of 500V-2000V is applied to the surface of the workpiece, with a duty cycle of 10%-30% to improve the density and adhesion of the coating, the deposition time of the DLC coating is controlled at 100-200 minutes, and the deposition rate and quality are adjusted according to the surface complexity of the workpiece.

[0013] In summary, the present invention has the following beneficial effects: The loom opening is clear, and the steel reed beats the weft to avoid touching the warp yarn, which prevents the glass fiber from fluffing and affecting the quality of the fabric. Avoiding air flow loss and reducing the weight of the special-shaped reed are beneficial to energy saving and consumption reduction of the loom.

[0014] The invention has the characteristics of high hardness, low friction and strong wear resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the special-shaped reed blade unit and the single-peak reed blade unit in the present invention. DETAILED DESCRIPTION

[0016] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] Embodiment: A steel reed for glass fiber, such as Figure 1 As shown, it includes a plurality of special-shaped reed blade units and a plurality of single-peak reed blade units, and the special-shaped reed blade units and the single-peak reed blade units are arranged alternately in sequence; the special-shaped reed blade unit includes an upper hump and a lower hump, an air flow groove is formed between the upper hump and the lower hump, and the single-peak reed blade unit includes a single hump; the orthographic projection of the single hump on the special-shaped reed blade unit coincides with the upper hump; the special-shaped reed blade unit and the single-peak reed blade unit are both made of 30Cr13 stainless steel; the surfaces of the special-shaped reed blade unit and the single-peak reed blade unit are provided with a DLC coating.

[0018] The airflow grooves formed between the upper and lower humps of the profiled reed blades help reduce the friction between the fiber and the reed blades. When the fiber passes through these airflow grooves, it can maintain a relatively smooth contact, reducing the friction between the fiber surface and the reed blades, thereby reducing the risk of fiber fuzzing. Moreover, the airflow grooves can not only reduce friction, but also provide a certain amount of air flow for the fiber during the weaving process, helping the fiber to pass more smoothly, further reducing the fuzzing caused by excessive tension or resistance on the fiber.

[0019] The overlapping design of the single hump and the upper hump makes the contact area of ​​the fiber on the reed more stable, avoiding the up and down swing of the fiber when passing through the reed. It also makes the contact surface of the fiber smoother and more continuous, thereby reducing the sudden mechanical changes that may occur in the fiber when passing through the reed and avoiding fiber fuzzing.

[0020] A method for producing a reed comprises the following steps: S1, material cutting and stamping: cutting the stainless steel sheet into a preliminary shape of the required size, and forming the cut stainless steel sheet through a stamping device to obtain a special-shaped reed blade unit with an upper hump, a lower hump and an air flow groove structure; a single-hump reed blade unit can be processed into a single hump shape through a similar stamping process; S2, grinding and deburring: Deburring is performed on the parts after cutting and stamping to ensure that there are no sharp edges or irregular parts to avoid affecting subsequent assembly; S3, workpiece cleaning: use ultrasonic cleaning equipment with a frequency of 35 kHz, and the cleaning agent is a mixed solution of deionized water and neutral cleaning liquid to remove surface oil, dust and other pollutants. The ultrasonic cleaning time is controlled within 15 minutes to ensure thorough cleaning; Nitrogen drying: Use high-purity nitrogen (≥99.99%) to dry the cleaned special-shaped reed blade units and single-peak reed blade units, especially in the complex-shaped air flow grooves, humps and other parts to ensure that no moisture is left; S4, heating to a suitable temperature: turn on the heater in the vacuum chamber, heat the vacuum chamber and the workpiece to 180°C, and ensure that the temperature is evenly distributed. For the complex-shaped special-shaped reed blade units, multi-point temperature control is required, and a constant temperature is maintained during the coating process, with the temperature error controlled within ±5°C; avoid overheating or overcooling of certain parts, which may affect the coating quality; S5, ion beam cleaning: first evacuate the vacuum chamber, then introduce high-purity argon gas with a purity of more than 5N, and maintain the vacuum degree of the vacuum chamber between 0.2 Pa, turn on the ion beam power supply, and perform ion cleaning on the surface of the special-shaped reed unit and the single-peak reed unit. The working voltage is set to 1500V, the current range is 80mA, and the cleaning time is controlled within 30 minutes; this process can effectively remove surface oxides and pollutants and improve the adhesion of the coating; Apply pulse bias: During the ion cleaning process, apply a pulse bias of 1000V and control the duty cycle to 25%; S6, preparation of metal transition layer: maintain vacuum degree: at 0.1 Pa, turn on the multi-arc arc source, and conduct the current to the cathode arc source with a Cr target or a Ti target; deposition conditions: the current of the DC power supply is greater than 60A, a pulse bias of 300V-500V is applied to the workpiece, the duty cycle is 30%, and the deposition time of the metal transition layer is 45 minutes to ensure that the layer thickness is uniform and firm; S7, deposition of DLC coating: hydrocarbon gas introduction: methane (CH4) or other hydrocarbon gases are introduced into the vacuum chamber, and the vacuum degree is controlled between 0.5 Pa; DLC coating deposition: turn on the ion beam power supply, start the DLC coating deposition process, the working voltage applied to the ion beam is greater than 1000V, and the current range is 200mA; S8, cooling process: After the coating deposition is completed, turn off the ion beam power supply, bias power supply, gas source and heating power supply, maintain the vacuum chamber in the evacuation state, and gradually cool down. In order to avoid coating cracks caused by thermal stress, the cooling process needs to be controlled within 60 minutes to ensure that the temperature of the workpiece slowly drops to room temperature.

[0021] In step S5, the vacuum chamber is first evacuated to a vacuum level of at least 5 × 10 -3 To ensure the stability of the deposition process, the target vacuum degree is 10 -4 Pa, providing a low-impurity environment for subsequent ion cleaning and deposition processes.

[0022] High-frequency pulse voltage technology is used in S7; a pulse bias of 500V-2000V is applied to the workpiece surface with a duty cycle of 10%-30% to improve the density and adhesion of the coating. The deposition time of the DLC coating is controlled at 100-200 minutes, and the deposition rate and quality are adjusted according to the surface complexity of the workpiece.

[0023] The DLC coating process design for profiled reed blade units and single-peak reed blade units adopts fine control steps and optimized process conditions. From workpiece cleaning, ion cleaning, metal transition layer deposition, DLC coating deposition to cooling, each step ensures the quality and performance of the coating. Especially in terms of pulse bias and temperature control, precise control can ensure the uniformity and adhesion of the coating, and maximize the wear resistance and service life of the reed.

[0024] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A steel reed for glass fiber, characterized in that: It comprises a plurality of special-shaped reed blade units and a plurality of single-peak reed blade units, wherein the special-shaped reed blade units and the single-peak reed blade units are arranged alternately in sequence.

2. A glass fiber reed according to claim 1, characterized in that: The special-shaped reed blade unit comprises an upper hump and a lower hump, an air flow groove is formed between the upper hump and the lower hump, and the single-humped reed blade unit comprises a single hump.

3. A steel reed for glass fiber according to claim 2, characterized in that: The orthographic projection of the single hump on the special-shaped reed blade unit coincides with the upper hump.

4. A glass fiber reed according to claim 1, characterized in that: The special-shaped reed blade unit and the single-peak reed blade unit are both made of 30Cr13 stainless steel.

5. A glass fiber reed according to claim 4, characterized in that: The surfaces of the special-shaped reed blade unit and the single-peak reed blade unit are provided with a DLC coating.

6. A method for producing a reed according to claims 1-5, characterized in that: The steps include: S1, material cutting and stamping: cutting the stainless steel sheet into a preliminary shape of the required size, and forming the cut stainless steel sheet through a stamping device to obtain a special-shaped reed blade unit with an upper hump, a lower hump and an air flow groove structure; a single-hump reed blade unit can be processed into a single hump shape through a similar stamping process; S2, grinding and deburring: Deburring is performed on the parts after cutting and stamping to ensure that there are no sharp edges or irregular parts to avoid affecting subsequent assembly; S3, workpiece cleaning: Use ultrasonic cleaning equipment with a frequency between 25-40 kHz. The cleaning agent is a mixed solution of deionized water and neutral cleaning liquid to remove surface oil, dust and other pollutants. The ultrasonic cleaning time is controlled within 10-15 minutes to ensure thorough cleaning; Nitrogen drying: Use high-purity nitrogen (≥99.99%) to dry the cleaned special-shaped reed blade units and single-peak reed blade units, especially in the complex-shaped air flow grooves, humps and other parts to ensure that no moisture is left; S4, heating to a suitable temperature: turn on the heater in the vacuum chamber, heat the vacuum chamber and the workpiece to 100℃-180℃, and ensure that the temperature is evenly distributed. For the complex-shaped special-shaped reed blade unit, multi-point temperature control is required, and a constant temperature is maintained during the coating process, and the temperature error is controlled within ±5℃; S5, ion beam cleaning: first, evacuate the vacuum chamber, then introduce high-purity argon gas with a purity of more than 5N, and maintain the vacuum degree of the vacuum chamber between 0.1-0.2 Pa, turn on the ion beam power supply, and perform ion cleaning on the surface of the special-shaped reed unit and the single-peak reed unit. The working voltage is set to 1000V-1500V, the current range is 50-100mA, and the cleaning time is controlled within 15-30 minutes; Apply pulse bias: During the ion cleaning process, apply a pulse bias of 500V-1500V and control the duty cycle to 25%-50%; S6, preparation of metal transition layer: maintain vacuum degree: between 0.1-2 Pa, turn on the multi-arc arc source, and conduct the current to the cathode arc source with Cr target or Ti target; Deposition conditions: The current of the applied DC power supply is greater than 60A, a pulse bias of 300V-500V is applied to the workpiece, the duty cycle is 30%-50%, and the deposition time of the metal transition layer is 15-45 minutes to ensure that the layer thickness is uniform and firm; S7, depositing DLC ​​coating: hydrocarbon gas introduction: introduce methane (CH4) or other hydrocarbon gases into the vacuum chamber, and control the vacuum degree between 0.05-0.5 Pa; DLC coating deposition: turn on the ion beam power supply, start the DLC coating deposition process, the working voltage applied to the ion beam is greater than 1000V, and the current range is 50-300mA; S8, cooling process: After the coating deposition is completed, turn off the ion beam power supply, bias power supply, gas source and heating power supply, maintain the vacuum chamber in the evacuation state, and gradually cool down. In order to avoid coating cracks caused by thermal stress, the cooling process needs to be controlled within 45-60 minutes to ensure that the temperature of the workpiece slowly drops to room temperature.

7. A glass fiber reed and a production method thereof according to claim 1, characterized in that: In step S5, the vacuum chamber is first evacuated to a vacuum level of at least 5×10 -3 To ensure the stability of the deposition process, the target vacuum degree is 10 -4 Pa, providing a low-impurity environment for subsequent ion cleaning and deposition processes.

8. A glass fiber reed and a production method thereof according to claim 4, characterized in that: The S7 uses high-frequency pulse voltage technology; a pulse bias of 500V-2000V is applied to the workpiece surface with a duty cycle of 10%-30% to improve the density and adhesion of the coating. The deposition time of the DLC coating is controlled at 100-200 minutes, and the deposition rate and quality are adjusted according to the surface complexity of the workpiece.

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