Weaving machine for the production of impregnated canvas and method of operation thereof

Abstract

The application relates to the technical field of looms, and discloses a loom for producing impregnated canvas and an operation method thereof, which comprises a rack, a warp yarn guiding mechanism, a weft yarn feeding mechanism, a weaving mechanism, an online waste yarn collecting assembly and an oil anti-seepage recovery unit; the warp yarn guiding mechanism is used for outputting twisted yarn and finished warp yarn raw silk, the weft yarn feeding mechanism outputs weft yarn raw silk and synchronously feeds the weft yarn raw silk into the weaving mechanism to complete canvas cloth weaving; the online waste yarn collecting assembly is arranged below the discharging side of the weaving mechanism and comprises a negative pressure suction material air hood, a waste yarn temporary storage box and a pulse dust removal device; the negative pressure suction material air hood is opposite to the lower side of a weaving shed, can suck waste yarn falling in the weaving process in real time and convey the waste yarn to the waste yarn temporary storage box for centralized storage. The application synchronously collects weaving waste yarn and seepage oil, avoids pollution of the site and the canvas cloth, removes dust on the canvas cloth in advance through blowing and sweeping, and reduces dangerous and waste output of waste rubber skin in the impregnation process from the source.

Description

Technical Field

[0001] This invention relates to the field of loom technology, specifically to a loom for producing PVC-impregnated canvas and its operating method. Background Technology

[0002] Rubber-impregnated canvas is widely used in the processing of rubber and plastic products such as transmission belts and conveyor belts. The loom is the core weaving equipment for preparing the greige fabric of the impregnated canvas. It relies on the warp and weft feeding and the weaving structure to complete the warp and weft interlacing operation. The woven greige fabric is directly transported to the impregnation station for impregnation with adhesive.

[0003] Existing looms are equipped with basic warp and weft supply and weaving structures. Although the equipment has a simple waste material receiving part, it can only partially receive fallen waste yarn and cannot fully collect yarn debris falling off the shed. Although the transmission lubrication points are equipped with simple oil receiving trays, the oil receiving range is limited and there is no closed guide structure. Waste yarn is scattered everywhere and machine oil drips, contaminating the greige fabric and the working ground. At the same time, the loom's discharge position is not equipped with a matching blowing component. The floating yarn dust carried by the greige fabric will directly enter the impregnation process with the greige fabric. After drying in the glue solution, it will continuously generate a large amount of waste rubber and hazardous waste. Therefore, a loom for impregnated canvas production and its operation method are proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a loom for producing PVC-impregnated canvas and its operating method, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a loom for producing PVC-impregnated canvas, comprising: The machine frame, warp guide mechanism, weft feeding mechanism, weaving mechanism, online waste yarn collection assembly, and oil seepage prevention and recovery unit; The warp yarn guiding mechanism is used to output the warp yarn raw material after twisting and warping, and the weft yarn feeding mechanism outputs the weft yarn raw material and simultaneously feeds it into the weaving mechanism to complete the canvas fabric weaving. It can stably and continuously supply warp and weft yarns to ensure continuous fabric weaving operations and provide a basic operating carrier for simultaneous waste recycling and pre-processing of impurities in the fabric. The online waste yarn collection component is located below the material discharge side of the weaving mechanism and includes a negative pressure suction hood, a waste yarn temporary storage box and a pulse dust removal device. The negative pressure suction hood faces directly below the weaving shed and sucks up the waste yarn that falls off during the weaving process in real time and transports it to the waste yarn temporary storage box for centralized collection. It can collect the waste yarn generated by weaving in real time in a sealed manner, avoiding the waste yarn from scattering everywhere and causing dirt and mess on site and secondary adhesion to the fabric. The oil seepage prevention and recovery unit covers all transmission bearings and gear lubrication points of the weaving mechanism, including an oil collection tank, a guide oil pipe and a hazardous waste oil collection bucket. The oil collection tank is arranged around the bottom of the transmission components. The leaked waste oil flows by gravity through the guide oil pipe to the hazardous waste oil collection bucket for sealed storage. It can completely intercept the leaked lubricating oil from the equipment, prevent oil dripping and contaminating the canvas fabric, and at the same time realize the classified and sealed storage of hazardous waste. The loom's discharge end is connected to a pre-impregnation conveying guide roller. A pre-dust removal blowing nozzle is installed on the side of the conveying guide roller. The pre-dust removal blowing nozzle is connected to a high-pressure air source to remove floating fibers and dust adhering to the surface of the fabric. This eliminates the source of floating fiber impurities that would enter the subsequent first and second bath impregnation processes and form waste rubber hazardous waste. This reduces the amount of impurities brought into the impregnation system from the front end of production, thereby reducing the amount of hazardous waste rubber generated at the source and lowering the pressure on the downstream adhesive treatment.

[0006] Preferably, the negative pressure suction hood is equipped with an adjustable support, which can adjust the coverage width of the hood according to the width of the canvas weave. Multiple sets of evenly distributed negative pressure suction ports are arranged inside the hood, and each suction port is independently equipped with a throttling regulating valve.

[0007] Preferably, the inner side of the oil collection tank of the oil anti-seepage recovery unit is attached with an oil-resistant and anti-seepage rubber gasket, the bottom of the oil collection tank is inclined, the lowest end is connected to the guide oil pipe, and the guide oil pipe is equipped with a one-way check valve to prevent hazardous waste oil from backflowing and contaminating the woven fabric.

[0008] Preferably, the pre-dust removal blowing nozzle is a slit-type flat nozzle, and the air outlet direction of the nozzle forms an angle of 30° to 45° with the fabric travel direction.

[0009] Preferably, a noise reduction enclosure component is provided on the side of the weaving mechanism. The noise reduction enclosure component includes a detachable sound insulation board and a sound-absorbing cotton layer. The sound insulation board has an opening corresponding to the entry and exit of the greige fabric, and a flexible sound insulation sealing strip is provided at the opening to reduce noise pollution generated during the weaving process.

[0010] Preferably, the waste filament storage bin and the hazardous waste oil collection bin are equipped with sealed doors. Solid waste identification areas and hazardous waste identification areas are respectively set on the outside of the bin and the collection bin, and both are equipped with liquid level / material level sensors and alarms. When the material is full, an audible and visual alarm will be set to remind the transfer.

[0011] An operating method for a loom for producing PVC-coated canvas, based on the aforementioned loom for producing PVC-coated canvas, includes the following steps: S1. Raw material loading: Install the warp raw material yarns that have been twisted and warped into the warp yarn guiding mechanism, and load the weft raw material yarns into the weft yarn feeding mechanism. Adjust the warp and weft yarn feeding tensions to the process setting values. S2. Loom Pre-treatment: Adjust the height and width of the negative pressure suction hood, open the one-way check valve of the oil anti-seepage recovery unit, and check the sealing status of the hazardous waste oil collection tank; activate the noise reduction enclosure components to close the sound insulation board and install the flexible sound insulation sealing strip. S3. Pre-dust removal debugging: Turn on the high-pressure air source, adjust the air pressure of the pre-dust removal blowing nozzle, adjust the angle between the nozzle and the fabric to 30°~45°, and confirm that all the blown loose fibers fall into the dust recovery bin. S4. Weaving operation: Start the weaving mechanism to weave the canvas fabric. During the weaving process, the negative pressure suction fan continuously sucks up the waste yarn falling off the shed. The waste yarn is automatically collected into the waste yarn temporary storage box. The oil leaking from the transmission point flows into the hazardous waste oil collection bucket through the oil collection tank and the guide oil pipe. After the fabric is pre-dust removed and blown, it is transported to the downstream impregnation process. S5. Real-time monitoring: Continuously monitor the material level / liquid level sensor alarm. When waste yarn or waste oil reaches the storage threshold, the weaving operation is suspended and the waste yarn solid waste and hazardous waste oil are transferred separately. S6. Shutdown and Cleaning: After the weaving batch is completed, shut down the loom, remove the negative pressure dust collector, blow out the air source, remove the sound insulation panel to clean the internal dust, empty the waste yarn temporary storage box and dust recovery bin, and seal and transfer the hazardous waste oil collection bucket.

[0012] Preferably, during the weaving process in step S4, the amount of waste yarn generated and the amount of waste machine oil collected are recorded synchronously in real time; after the pre-dust removal of the fabric, the amount of residual floating yarn on the surface is sampled and tested. If the residue exceeds the standard, the air pressure of the pre-dust removal blowing nozzle is increased and the angle between the nozzle and the fabric is reduced to reduce the impurities brought into the impregnation process by the fabric and reduce the amount of hazardous waste rubber generated in the first and second bath impregnation processes.

[0013] Compared with the prior art, the present invention provides a loom for producing PVC-impregnated canvas and its operating method, which has the following beneficial effects: This invention utilizes a warp-guiding mechanism and a weft-feeding mechanism in conjunction with a weaving mechanism to complete the fabric weaving process. It also incorporates an online waste yarn collection component and an oil leakage prevention and recovery unit to simultaneously collect production waste yarn and leaked waste oil. This achieves in-situ, closed-loop collection of weaving solid waste and hazardous waste, offering advantages such as reduced fugitive emissions of pollutants and standardized storage and transportation of hazardous waste. It solves the problems of waste yarn scattering and oil leakage contaminating the fabric and production site associated with traditional looms. Furthermore, by using pre-dust removal nozzles located on the side of the pre-impregnation guide roller to blow away floating dust from the fabric surface, impurities from fabric weaving are removed beforehand. This reduces the amount of impurities introduced into subsequent impregnation processes and solves the problem of floating impurities entering the adhesive drying process and forming large amounts of waste rubber and hazardous waste. Attached Figure Description

[0014] Figure 1 This is a perspective view of the overall structure of the present invention; Figure 2 This is a schematic diagram of the noise reduction enclosure component of the present invention in disassembly state; Figure 3 This is a flowchart illustrating the operation method of the loom for producing dipped canvas according to the present invention.

[0015] In the diagram: 1. Frame; 2. Warp guide mechanism; 3. Weft feeding mechanism; 4. Weaving mechanism; 5. Negative pressure suction hood; 6. Waste yarn temporary storage bin; 7. Conveyor guide roller; 8. Pre-dust removal blowing nozzle; 9. Noise reduction enclosure components. Detailed Implementation

[0016] This invention provides a technical solution: a loom for producing PVC-coated canvas. Please refer to [link / reference]. Figure 1 , Figure 2 and Figure 3 ,include: Frame 1, warp guide mechanism 2, weft feeding mechanism 3, weaving mechanism 4, online waste yarn collection assembly and oil seepage prevention and recovery unit; The warp guide mechanism 2 is used to output the warp raw material yarn after twisting and warping, and the weft feeding mechanism 3 outputs the weft raw material yarn and simultaneously feeds it into the weaving mechanism 4 to complete the weaving of the canvas fabric. The online waste yarn collection component is located below the discharge side of the weaving mechanism 4, and includes a negative pressure suction hood 5, a waste yarn temporary storage box 6, and a pulse dust removal device. The negative pressure suction hood 5 faces the bottom of the weaving shed and sucks up the waste yarn that falls off during the weaving process in real time and transports it to the waste yarn temporary storage box 6 for centralized collection. The oil leakage prevention and recovery unit covers all transmission bearings and gear lubrication points of the weaving mechanism 4, including an oil collection tank, a guide oil pipe and a hazardous waste oil collection bucket. The oil collection tank is arranged around the bottom of the transmission components. The leaked waste oil flows by gravity through the guide oil pipe to the hazardous waste oil collection bucket for sealed storage. The loom discharge end is connected to the pre-impregnation conveying guide roller 7. The side of the conveying guide roller 7 is equipped with a pre-dust removal blowing nozzle 8, which is connected to a high-pressure air source to remove floating fibers and dust adhering to the surface of the fabric, and eliminate the source of floating fiber impurities that enter the subsequent first and second bath impregnation processes to form waste rubber and hazardous waste.

[0017] Please see Figure 1 and Figure 2 The negative pressure suction hood 5 is equipped with an adjustable support frame, which can adjust the coverage width of the hood according to the width of the canvas weave. Multiple sets of evenly distributed negative pressure suction ports are arranged inside the hood, and each suction port is independently equipped with a throttling regulating valve.

[0018] The oil collection tank of the oil anti-seepage recovery unit is lined with an oil-resistant and seepage-proof rubber gasket. The bottom of the oil collection tank is inclined and the lowest end is connected to the guide oil pipe. The guide oil pipe is equipped with a one-way check valve to prevent hazardous waste oil from backflowing and contaminating the woven fabric.

[0019] The pre-dust removal blowing nozzle 8 is a slit-type flat nozzle, and the air outlet direction of the nozzle is at an angle of 30°~45° with the direction of fabric travel.

[0020] The weaving mechanism 4 is equipped with a noise reduction enclosure component 9 on its side. The noise reduction enclosure component 9 includes a detachable sound insulation board and a sound-absorbing cotton layer. The sound insulation board has an opening for the entry and exit of the fabric, and a flexible sound insulation sealing strip is installed at the opening to reduce noise pollution generated during the weaving process.

[0021] The waste filament temporary storage bin 6 and the hazardous waste oil collection bin are both equipped with sealed opening and closing doors. Solid waste identification areas and hazardous waste identification areas are respectively set on the outside of the bin and the collection bin, and both are equipped with liquid level / material level sensor alarms. When the material is full, an audible and visual alarm will be set to remind the transfer.

[0022] An operating method for a loom used in the production of PVC-coated canvas, based on the aforementioned loom for producing PVC-coated canvas, please refer to [link to relevant documentation]. Figure 3 It includes the following steps: S1. Raw material loading: Install the warp raw material yarns that have been twisted and warped into the warp yarn guiding mechanism 2, and load the weft raw material yarns into the weft yarn feeding mechanism 3. Adjust the warp and weft yarn feeding tensions to the process setting values. S2. Loom Pre-treatment: Adjust the height and width of the negative pressure suction hood 5, open the one-way check valve of the oil anti-seepage recovery unit, and check the sealing status of the hazardous waste oil collection bucket; activate the noise reduction enclosure component 9 to close the sound insulation board and install the flexible sound insulation sealing strip. S3. Pre-dust removal debugging: Turn on the high-pressure air source, adjust the air pressure of the pre-dust removal blowing nozzle 8, adjust the angle between the nozzle and the fabric to 30°~45°, and confirm that all the blown loose fibers fall into the dust recovery bin. S4. Weaving operation: Start the weaving mechanism 4 to weave the canvas fabric. During the weaving process, the negative pressure suction fan hood 5 continuously sucks up the waste yarn falling off the shed. The waste yarn is automatically collected into the waste yarn temporary storage box 6. The oil leaking from the transmission point flows into the hazardous waste oil collection bucket through the oil collection tank and the guide oil pipe. After the fabric is pre-dust removed and blown, it is transported to the downstream impregnation process. S5. Real-time monitoring: Continuously monitor the material level / liquid level sensor alarm. When waste yarn or waste oil reaches the storage threshold, the weaving operation is suspended and the waste yarn solid waste and hazardous waste oil are transferred separately. S6. Shutdown and Cleaning: After the weaving batch is completed, shut down the loom, remove the negative pressure dust collector, blow out the air source, remove the sound insulation panel to clean the internal dust, empty the waste yarn temporary storage box 6 and dust recovery bin, and seal and transfer the hazardous waste oil collection bucket.

[0023] During the weaving process in step S4, the amount of waste yarn generated and the amount of waste machine oil collected are recorded synchronously in real time. After the pre-dust removal of the fabric, the amount of residual floating yarn on the surface is sampled and tested. If the residue exceeds the standard, the air pressure of the pre-dust removal blowing nozzle 8 is increased and the angle between the nozzle and the fabric is reduced to reduce the impurities brought into the impregnation process by the fabric and reduce the amount of hazardous waste rubber generated in the first and second bath impregnation processes.

[0024] This solution: Frame 1 is equipped with a warp guide mechanism 2, which outputs warp yarns; weft yarn feeding mechanism 3 supplies weft yarns, and the two work together with weaving mechanism 4 to interweave and produce canvas fabric. Below weaving mechanism 4, a negative pressure suction hood 5 continuously removes waste yarn, sending it to a waste yarn temporary storage bin 6, where it is processed by a pulse dust collector. An oil seepage recovery unit collects leaked oil through an inclined oil collection trough with an oil-resistant liner, storing it in a hazardous waste oil collection bin via a guide pipe with a one-way check valve. When the fabric is conveyed by the pre-impregnated guide roller 7, a slit-type pre-dust removal blower 8 blows at a 30°~45° angle to remove surface dust. Noise reduction enclosure components 9 on the outside of weaving mechanism 4 isolate operating noise. The negative pressure suction hood 5 is adjustable in height and equipped with an independent throttling valve. The waste yarn temporary storage bin 6 and the hazardous waste oil collection bin are equipped with sealed doors, classification labels, and audible and visual alarms for material / liquid levels. During operation, the tension of the raw material loading is adjusted first, and then the negative pressure suction hood 5, the oil seepage prevention and recovery unit, the noise reduction enclosure component 9 and the pre-dust removal blowing nozzle 8 are adjusted. During the weaving stage, waste yarn and waste oil are recovered simultaneously, the fabric is cleaned by blowing and the waste storage is monitored in real time, and the machine is stopped and transferred if the amount exceeds the standard. After the batch is finished, the whole machine is stopped for cleaning. The air pressure and angle of the pre-dust removal blowing nozzle 8 are dynamically adjusted according to the detection results of the floating yarn of the fabric, so as to reduce the generation of hazardous waste rubber from the source.

Claims

1. A loom for producing PVC-impregnated canvas, characterized in that, include: Frame (1), warp guide mechanism (2), weft feeding mechanism (3), weaving mechanism (4), online waste yarn collection assembly and oil seepage prevention and recovery unit; The warp guide mechanism (2) is used to output the warp raw material yarn after twisting and warping, and the weft feeding mechanism (3) outputs the weft raw material yarn and simultaneously feeds it into the weaving mechanism (4) to complete the weaving of the canvas fabric. The online waste yarn collection component is located below the discharge side of the weaving mechanism (4), and includes a negative pressure suction hood (5), a waste yarn temporary storage box (6) and a pulse dust removal device. The negative pressure suction hood (5) faces the bottom of the weaving shed and sucks up the waste yarn that falls off during the weaving process in real time and transports it to the waste yarn temporary storage box (6) for centralized collection. The oil seepage prevention and recovery unit covers all transmission bearings and gear lubrication points of the weaving mechanism (4), including an oil collection tank, a guide oil pipe and a hazardous waste oil collection bucket. The oil collection tank is arranged around the bottom of the transmission component. The leaked waste oil flows by gravity through the guide oil pipe to the hazardous waste oil collection bucket for sealed storage. The loom's discharge end is connected to a pre-impregnation conveying guide roller (7). A pre-dust removal blowing nozzle (8) is provided on the side of the conveying guide roller (7). The pre-dust removal blowing nozzle (8) is connected to a high-pressure air source to remove floating fibers and dust adhering to the surface of the fabric, and to eliminate the source of floating fiber impurities that enter the subsequent first and second bath impregnation processes to form waste rubber hazardous waste.

2. The loom for producing PVC-impregnated canvas according to claim 1, characterized in that: The negative pressure suction hood (5) is equipped with an adjustable support frame. The coverage width of the hood is adjusted according to the width of the canvas weaving. Multiple sets of evenly distributed negative pressure suction ports are arranged inside the hood, and each suction port is independently equipped with a throttling regulating valve.

3. The loom for producing PVC-impregnated canvas according to claim 1, characterized in that: The inner side of the oil collection tank of the oil anti-seepage recovery unit is lined with an oil-resistant and anti-seepage rubber gasket, and the bottom of the oil collection tank is inclined.

4. The loom for producing PVC-impregnated canvas according to claim 1, characterized in that: The pre-dust removal blowing nozzle (8) is a slit-type flat nozzle, and the air outlet direction of the nozzle is at an angle of 30°~45° with the direction of fabric travel.

5. A loom for producing PVC-impregnated canvas according to claim 1, characterized in that: The weaving mechanism (4) is provided with a noise reduction enclosure component (9) on its side.

6. A loom for producing PVC-impregnated canvas according to claim 1, characterized in that: The waste filament storage bin (6) and the hazardous waste oil collection bin are both equipped with sealed opening and closing doors, and solid waste identification areas and hazardous waste identification areas are respectively set on the outside of the bin and the collection bin.

7. A method of operating a loom for producing PVC-coated canvas, based on a loom for producing PVC-coated canvas as described in any one of claims 1-6, characterized in that, Includes the following steps: S1. Raw material loading: Install the warp raw material yarns that have been twisted and warped into the warp opening mechanism (2), and load the weft raw material yarns into the weft feeding mechanism (3). Adjust the warp and weft feeding tensions to the process setting value. S2, loom pretreatment: Adjust the height and width of the negative pressure suction hood (5), open the one-way check valve of the oil anti-seepage recovery unit, check the sealing status of the hazardous waste oil collection bucket; start the noise reduction enclosure component (9), close the sound insulation board, and install the flexible sound insulation sealing strip; S3. Pre-dust removal debugging: Turn on the high-pressure air source, adjust the air pressure of the pre-dust removal blowing nozzle (8), adjust the angle between the nozzle and the fabric to 30°~45°, and confirm that all the blown floating wires fall into the dust recovery bin. S4. Weaving operation: Start the weaving mechanism (4) to weave the canvas fabric. During the weaving process, the negative pressure suction hood (5) continuously sucks up the waste yarn falling off the shed. The waste yarn is automatically collected into the waste yarn temporary storage box (6). The oil leaking from the transmission point flows into the hazardous waste oil collection bucket through the oil collection tank and the guide oil pipe. After the fabric is pre-dust removed and blown, it is transported to the downstream impregnation process. S5. Real-time monitoring: Continuously monitor the material level / liquid level sensor alarm. When waste yarn or waste oil reaches the storage threshold, the weaving operation is suspended and the waste yarn solid waste and hazardous waste oil are transferred separately. S6. Shutdown and cleaning: After the weaving batch is completed, shut down the loom, remove the negative pressure dust, blow the air source, disassemble the sound insulation board to clean the internal dust, empty the waste yarn temporary storage box (6) and dust recovery bin, and seal and transfer the hazardous waste oil collection bucket.

8. The operating method of a loom for producing PVC-coated canvas according to claim 7, characterized in that: During the weaving process in step S4, the amount of waste yarn generated and the amount of waste machine oil collected are recorded synchronously in real time. After the fabric is pre-dust removed, the amount of residual floating yarn on the surface is sampled and tested. If the residue exceeds the standard, the air pressure of the pre-dust removal blow nozzle (8) is increased and the angle between the nozzle and the fabric is reduced to reduce the impurities brought into the impregnation process by the fabric and reduce the amount of hazardous waste generated from the first and second bath impregnation.

Images