A raw material width conversion pipeline and a multi-unit full-automatic regenerated fiber raw material processing system

Abstract

This invention discloses a raw material width conversion production line and a multi-tasking fully automated recycled fiber raw material processing system, relating to the fields of textile machinery and automation control technology. Addressing the problems of width mismatch, difficulty in controlling moisture regain, and uneven capacity distribution in existing production lines, this system includes a cutting machine, width conversion equipment, and a moisture regain control system. The width conversion equipment is equipped with a swingable oscillator and a forming conveyor belt with rigid protrusions to spread narrow raw materials into a wide state. The system also includes a metal detector and removal machine and multiple width conversion devices connected in parallel, with reciprocating conveyor belts between adjacent devices to achieve intelligent bypass distribution of materials. This invention achieves seamless connection from narrow raw materials to wide processes, regulates moisture regain through microwave closed-loop control, and utilizes a reciprocating conveyor mechanism to achieve "one-to-many" capacity matching, improving production efficiency and safety levels.

Description

Technical Field

[0001] This invention relates to the field of textile machinery and automation control technology, specifically to a raw material width conversion production line and a multi-line fully automated recycled fiber raw material processing system. This system includes both specific mechanical structure improvements and intelligent control methods and processes. It is mainly used to convert recycled raw materials such as waste cloth and waste yarn from a narrow, cut state to a wide state suitable for processing on an opening and cleaning production line, and to achieve precise control of moisture regain and intelligent allocation of multi-line capacity. Background Technology

[0002] A recycled fiber production line is a process that uses mechanical force to tear and comb waste fabrics and yarns into single fibers. In China, recycled fiber production technology has been developing for nearly 20 years, and it is at the international leading level, especially in the field of spinning fibers. Unlike non-spinning fibers (mainly used as fillers and non-woven fabrics), spinning-specific fibers require a high proportion of long fibers, thus placing special requirements on the production process.

[0003] However, existing recycled fiber production lines have the following main problems in actual operation: Width mismatch: Cutting machines typically have a narrow width (maximum width 600mm) and high capacity (up to 1500kg / h), while subsequent opening and clearing production lines have a wider width (1000mm-1390mm) and lower single-machine capacity (150kg / h-400kg / h). Directly feeding narrow-width, thick material into wide-width equipment will result in uneven feeding, poor opening effect, and significant output loss. Currently, there is a lack of effective width conversion devices to achieve seamless integration between the two.

[0004] Controlling moisture regain is difficult: Raw materials need to be humidified after cutting to increase moisture regain and reduce fiber damage. Existing technologies mostly rely on artificial humidification, which cannot be monitored and controlled in real time, resulting in large fluctuations in moisture regain and affecting the quality of the final product.

[0005] Capacity matching challenge: Due to the significant capacity difference between the cutting machine and the opening line, the output of one cutting machine can theoretically supply multiple opening lines. However, existing production lines lack a flexible material allocation mechanism, making it difficult to achieve automated "one-to-many" operation, often resulting in wasted equipment investment or idle capacity.

[0006] Safety Hazard: Waste cloth and yarn often contain metal debris such as nails, which can easily generate sparks and cause fires during high-speed opening. Existing production lines lack an efficient pre-process metal removal step.

[0007] In summary, existing technologies generally do not connect the cutting machine and the subsequent recycled fiber production line together. Instead, waste fabric, waste yarn, and other raw materials are manually placed at the input end of the cutting machine, the cut raw materials for the recycled fiber production line are piled up, water is added, and they are left to sit for 24-48 hours. Then, they are manually placed at the input end of the recycled fiber production line to begin automated production. This process is labor-intensive and the production environment is harsh. Therefore, there is an urgent need for a fully automated recycled fiber raw material processing system that integrates width conversion, closed-loop moisture reabsorption control, metal removal, and intelligent multi-device distribution. Summary of the Invention

[0008] The purpose of this invention is to provide a raw material width conversion production line and a multi-tasking fully automated recycled fiber raw material processing system to solve the aforementioned technical problems. This invention provides both a specific hardware structure scheme and an intelligent control method based on this structure.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: A raw material width conversion production line includes a cutting machine (2) and a width conversion device (1). The input end of the width conversion device (1) is connected to the output end of the cutting machine (2). The width conversion device (1) is equipped with a feeding conveyor belt (13), a swingable oscillator (11), and a width forming conveyor belt (12) with hard protrusions (15) on its surface. The oscillator (11) distributes the narrow raw material laterally, and the hard protrusions (15) form a specific angle (α≤120°) with the conveying direction, further spreading the raw material into a wide and low-density state to match the working width of the downstream process.

[0010] Preferably, the system further includes a raw material moisture regain control system (3), which is located between the cutting machine (2) and the width conversion device (1). The system includes a housing (31), an ultrasonic atomizing humidifier (32), a heat source (312), and a microwave-based moisture regain controller (33). The moisture regain rate of the raw material is monitored in real time by a microwave transmitting probe (331) and a receiving probe (332), and the humidification amount and heating power are automatically adjusted to achieve closed-loop control.

[0011] Preferably, the system also includes a metal detection and removal machine (4), which is connected in series after the cutting machine (2) to remove iron debris and eliminate fire hazards.

[0012] Preferably, to achieve "one-to-many" production, the system is configured with multiple width conversion devices (1) connected in parallel. Reciprocating conveyor belts (such as a first reciprocating conveyor belt 51 and a second reciprocating conveyor belt 61) are set between adjacent devices. The reciprocating conveyor belts have a first conveying mode (feeding mode) and a second conveying mode (bypass mode). In the first conveying mode, material is fed into the current-level device; in the second conveying mode, material bypasses the current-level device and is directly conveyed to the next-level device. Through this intelligent switching, one cutting machine can simultaneously supply material to N (N≥1) width conversion devices, perfectly matching capacity differences. In a specific embodiment of the present invention, the first conveying mode corresponds to counterclockwise rotation of the conveyor belt, and the second conveying mode corresponds to clockwise rotation, but this directional definition does not limit the scope of protection of the present invention.

[0013] The beneficial effects of this invention are: Overcoming width limitations: Through the synergistic effect of the oscillator and the angled convex strip, narrow-width raw materials were successfully converted into wide-width raw materials, achieving automated docking between the cutting machine and the opening line.

[0014] Stable quality: Microwave online monitoring and ultrasonic atomization closed-loop control ensure constant raw material moisture regain, improving fiber strength and yarn quality.

[0015] Capacity optimization: The unique reciprocating conveyor belt bypass mechanism enables one cutting machine to drive multiple opening lines (one to three or even more), significantly reducing equipment investment costs.

[0016] Intrinsically safe: The front-mounted metal detector effectively prevents fires caused by metal debris.

[0017] Flexible and adjustable: The width limiting plate inside the storage bin is adjustable to adapt to different production requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the fully automated one-to-many recycled fiber raw material width conversion production line of the present invention.

[0019] Figure 2 This is a top view showing the connection of the multi-line fully automated recycled fiber raw material width conversion production line of the present invention. The dashed line represents an existing automated recycled fiber production line.

[0020] Figure 3 This is a schematic diagram of the internal structure of the width conversion device (1).

[0021] Figure 4 A schematic diagram showing the arrangement angle of the hard protrusions (15) on the surface of the width-formed conveyor belt (12).

[0022] Figure 5This is a schematic diagram of the structure of the storage bin (14) and the width limiting plate (142).

[0023] Figure 6 The schematic diagram of the raw material moisture regain control system (3) is shown.

[0024] Figure 7 This is a schematic diagram of the material flow direction of the first reciprocating conveyor belt (51) in the first conveying mode (feeding).

[0025] Figure 8 This is a schematic diagram of the material flow direction of the first reciprocating conveyor belt (51) in the second conveying mode (bypass).

[0026] Figure 9 This is a schematic diagram of the discharge structure with a dust cage (16) and an auxiliary stripping roller (161). Detailed Implementation

[0027] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are intended to explain the present invention, but not to limit its scope of protection.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment includes a cutting machine (2) and a width conversion device (1).

[0029] The cutting machine (2) cuts the waste cloth into pieces about 600 mm wide. The raw material is fed to the oscillator (11) via the feed conveyor belt (13). The oscillator (11) swings left and right to initially disperse the raw material.

[0030] The raw material falls onto the width-forming conveyor belt (12) below. For example... Figure 3 As shown, the conveyor belt surface is provided with hard protrusions (15), the extension direction of which makes an angle α of 90 degrees (≤120°) with the conveying direction. Under the action of the forward movement of the conveyor belt and the lateral thrust of the protrusions, the raw material is further spread laterally to form a uniform material layer with a width greater than 1000 mm.

[0031] The spread raw material passes through the storage bin (14). For example... Figure 4 As shown, the storage bin (14) is equipped with a photoelectric switch (141) to monitor the material level, and the bottom is equipped with an adjustable width limiting plate (142), which is fixed by a rotating shaft (143) to precisely control the width and thickness of the output raw material.

[0032] Finally, the raw material is stripped from the width forming conveyor belt (12) by the feeding roller (18) and falls onto the raw material output conveyor belt (17) to be sent to the downstream process (such as the loosening machine).

[0033] Based on Example 1, such as Figure 1 and Figure 6 As shown, a metal detector and removal machine (4) is connected in series after the cutting machine (2) to completely remove metal debris such as nails.

[0034] The raw materials then enter the raw material rehydration control system (3). Inside the housing (31), the rehydration conveyor belt (313) carries the raw materials through. The micron-level water mist delivery pipe (311) sprays ultrasonically atomized water vapor, and the heat source (312) assists in the permeation.

[0035] The microwave transmitting probe (331) and receiving probe (332) detect the microwave energy attenuation of the raw material in real time. The moisture regain signal processing unit (333) calculates the measured moisture regain rate. If it is lower than the preset value, it automatically increases the spray volume of the humidifier (32) and adjusts the heat source (312); if it is higher than the preset value, it reduces the spray or strengthens the drying. This process is fully automated and requires no manual intervention.

[0036] It should be noted that the above-described steps for controlling moisture regain can be considered as independent points of protection for an invention patent.

[0037] like Figure 1 , Figure 2 , Figure 7 and Figure 8 As shown, this embodiment is configured with one cutting machine (2) and three width conversion devices (the first one 1, the second one 5, and the third one 6 respectively).

[0038] A first reciprocating conveyor belt (51) is set between the first device (1) and the second device (5); a second reciprocating conveyor belt (61) is set between the second device (5) and the third device (6).

[0039] Work logic: Normal mode (first conveying mode): The first reciprocating conveyor belt (51) is in a forward operating state (e.g., counterclockwise) to guide the raw material into the swing device (11) of the first device (1).

[0040] Bypass mode (second conveyor mode): When the downstream production line corresponding to the first device (1) is fully loaded, malfunctions, or stops, the control system instructs the first reciprocating conveyor belt (51) to switch to reverse operation (e.g., clockwise). At this time, the raw material is not unloaded, but is directly conveyed to the input end of the second device (5) (if the second device is the end, it enters its swing device 511; if there is a third device, it enters the second reciprocating conveyor belt 61).

[0041] Cascaded distribution: Similarly, the second reciprocating conveyor belt (61) is responsible for distribution between the second and third equipment.

[0042] Through this mechanism, a cutting machine with a capacity of 1500 kg / h can flexibly supply three opening lines with a capacity of 400 kg / h, achieving optimal capacity matching.

[0043] The terms "counterclockwise" and "clockwise" here are merely specific implementation methods based on the perspective of the illustration. The core of this invention lies in the switching between the two functional modes of "feeding" and "bypass".

[0044] like Figure 9 As shown, a dust cage (16) is added between the width forming conveyor belt (12) and the feeding roller (18). The dust cage (16) is under negative pressure, which adsorbs the fibers after being combed by the hard protrusions (15) onto the surface of the dust cage, further removing dust and organizing the fiber web.

[0045] Optionally, an auxiliary stripping roller (161) is installed between the conveyor belt and the dust cage to strike the residual fibers on the surface of the conveyor belt, ensuring that all fibers are transferred to the dust cage. Finally, the feed roller (18) peels the fiber web off the surface of the dust cage and drops it onto the raw material output conveyor belt (17). This structure is suitable for the production of spinning fibers where the cleanliness and uniformity of the fibers are extremely important.

[0046] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural modifications made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A raw material width conversion production line, characterized in that, include: Cutting machine (2); Width conversion device (1), the input end of the width conversion device (1) is connected to the output end of the cutting machine (2), and is used to receive raw materials from the cutting machine (2) and convert the width of the raw materials into the working width required by the downstream process of the recycled fiber production line before outputting them.

2. The raw material width conversion production line according to claim 1, characterized in that, The width conversion device (1) includes: Feed conveyor belt (13) is used to receive raw materials from the cutter (2); A swinger (11), located at the output end of the feed conveyor belt (13), is configured to swing; A wide forming conveyor belt (12) is disposed below the rocker (11) for receiving the raw materials distributed by the rocker (11) and conveying them forward; The oscillator (11) is configured to distribute the raw material on the width forming conveyor belt (12) at a predetermined width.

3. The raw material width conversion production line according to claim 2, characterized in that, Also includes: A storage bin (14) is disposed between the rocker (11) and the width forming conveyor belt (12); A photoelectric switch (141) is installed on the upper part of the storage box (14) for monitoring the height of the raw materials; A hard protrusion (15) is disposed on the outer surface of the width forming conveyor belt (12), and there is an angle α between the extending direction of the hard protrusion (15) and the material conveying direction, wherein α≤120°; An output height control plate (19) is provided at the outlet of the storage box (14); The feeding roller (18) and the raw material output conveyor belt (17) are sequentially arranged at the output end of the width forming conveyor belt (12) to output the processed raw material to the downstream process; The feeding roller (18) is paired with the width forming conveyor belt (12), and the raw material output conveyor belt (17) is located below the feeding roller (18).

4. The raw material width conversion production line according to claim 3, characterized in that, The inner wall of the storage box (14) is provided with corresponding width limiting plates (142) on both sides along the raw material conveying direction; The upper part of the width limiting plate (142) is connected to the inner wall of the storage box (14) via a pivot (143), so that the width limiting plate (142) can rotate around the pivot (143) to adjust the angle and fix it. The spacing between the lower edges of the width limiting plates (142) on both sides is defined as the output width of the raw materials.

5. The raw material width conversion production line according to claim 3 or 4, characterized in that, Also includes: A dust cage (16) is disposed between the width forming conveyor belt (12) and the feeding roller (18); The dust cage (16) is equipped with a negative pressure suction device, which is used to adsorb the raw material conveyed by the hard protrusion (15) onto the surface of the dust cage (16), and under the action of the material feeding roller (18), it is separated and falls onto the raw material output conveyor belt (17).

6. The raw material width conversion production line according to claim 5, characterized in that, Also includes: An auxiliary stripping roller (161) is disposed between the width forming conveyor belt (12) and the dust cage (16); The auxiliary stripping roller (161) is configured to strike the raw material on the surface of the width forming conveyor belt (12) and peel off the raw material in conjunction with the negative pressure suction of the dust cage (16).

7. The raw material width conversion production line according to claim 1, characterized in that, It also includes a raw material moisture regain control system (3), which is located between the cutting machine (2) and the width conversion device (1); The raw material moisture regain control system (3) includes: Box (31); Ultrasonic atomizing humidifier (32); Moisture regain controller (33); The housing (31) is equipped with a micron-level water mist delivery pipe (311), a heat source (312), and a rehumidification conveyor belt (313) that are connected to the ultrasonic atomizing humidifier (32). The rehydration conveyor belt (313) passes through the box (31), with its input end cooperating with the cutting machine (2) and its output end cooperating with the feed conveyor belt (13) of the width conversion device (1).

8. The raw material width conversion production line according to claim 7, characterized in that, Also includes: A microwave transmitting probe (331) and a microwave receiving probe (332) are disposed on the conveying path between the housing (31) and the downstream process; The moisture return signal processing unit (333) works in conjunction with the moisture return controller (33); The microwave transmitting probe (331) and the microwave receiving probe (332) are electrically connected to the backflow signal processing unit (333), respectively. The moisture regain signal processing unit (333) is configured to calculate the measured relative moisture regain of the raw material based on the microwave energy attenuation detected by the microwave receiving probe (332), and send control signals to the ultrasonic atomizing humidifier (32) and the heat source (312) based on the deviation between the measured relative moisture regain and the preset standard relative moisture regain.

9. The raw material width conversion production line according to claim 1, characterized in that, It includes one cutting machine (2) and multiple width conversion devices (1) connected in parallel; A reciprocating conveyor belt is installed between two adjacent width conversion devices; A first reciprocating conveyor belt (51) is provided between the first width conversion device (1) and the second width conversion device (5); When a third width conversion device (6) is present, a second reciprocating conveyor belt (61) is provided between the second width conversion device (5) and the third width conversion device (6); The raw material output end of each of the width conversion devices is respectively connected to its corresponding recycled fiber production line; The reciprocating conveyor belt is configured to receive raw materials from the side of the upstream equipment and has a first conveying mode and a second conveying mode. In the first conveying mode, the material is guided to the input end of the current-level width conversion device; In the second conveying mode, the material is guided to the bypass channel, skips the current width conversion device, and is conveyed to the input end of the next level device.

10. The raw material width conversion production line according to claim 9, characterized in that, In the first width conversion device (1): The output end of the feed conveyor belt (13) is matched with the input end of the first reciprocating conveyor belt (51); In the first conveying mode, the output end of the first reciprocating conveyor belt (51) cooperates with the swinger (11); In the second conveying mode, the output end of the first reciprocating conveyor belt (51) is matched with the input end of the second width conversion device (5).

11. The raw material width conversion production line according to claim 10, characterized in that, The second width conversion device (5) is equipped with a second swing device (511); If the second width conversion device (5) is the end device, then in the second conveying mode, the output end of the first reciprocating conveyor belt (51) is engaged with the second oscillator (511); If a third width conversion device (6) is provided after the second width conversion device (5), then in the second conveying mode, the output end of the first reciprocating conveyor belt (51) is matched with the input end of the second reciprocating conveyor belt (61); The second reciprocating conveyor belt (61) is configured to have the first conveying mode and the second conveying mode; In the first conveying mode, the output end of the second reciprocating conveyor belt (61) cooperates with the second oscillator (511); In the second conveying mode, the output end of the second reciprocating conveyor belt (61) is matched with the input end of the third width conversion device (6).

12. The raw material width conversion production line according to claim 1, characterized in that, This production line constitutes a multi-tasking fully automated recycled fiber raw material processing system, and also includes: A metal detector removal machine (4) is installed at the output end of the cutting machine (2); A raw material moisture regain control system (3) is installed at the output end of the metal detection and removal machine (4); N width conversion devices (1) are installed at the output end of the raw material moisture regain control system (3), where N is an integer greater than or equal to 1; When N≥2, a reciprocating conveying device is provided between two adjacent width conversion devices (1). The reciprocating conveying device is configured to selectively convey the raw material to the input end of the current width conversion device or bypass it to the input end of the next width conversion device. The cutting machine (2), metal detector and removal machine (4), raw material moisture control system (3) and N width conversion devices (1) are connected in sequence by conveyor belts to form a complete raw material processing flow.

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