Leather processing unwinding device

Abstract

This utility model relates to the field of leather processing technology, specifically a leather processing unwinding device, including a mounting frame. Two symmetrically distributed movable frames are slidably mounted on the mounting frame. The mounting frame is equipped with an adsorption cleaning mechanism for cleaning the leather surface. The adsorption cleaning mechanism includes a carbon fiber brush rotatably mounted on the mounting frame. A conductive slip ring is provided on the mounting frame, and an electrostatic generator is located on the right side of the mounting frame. A fixed frame corresponding to the carbon fiber brush is also provided on the mounting frame, along with a dust suction mechanism for cleaning the carbon fiber brush. Through the two symmetrically distributed carbon fiber brushes and the electrostatic generator, the device simultaneously utilizes both physical brushing and electrostatic adsorption. The conductive properties of carbon fiber ensure uniform distribution of static charge, powerfully capturing micron-sized dust and residual crystals, significantly improving the removal rate of deeply embedded fiber impurities, preventing subsequent coating spots from the source, and promptly removing sharp particles from the surface.

Description

Technical Field

[0001] This utility model relates to the field of leather processing technology, specifically to a leather processing unwinding device. Background Technology

[0002] Leather is animal hide that has been denatured and is not easily perishable, obtained through physical and chemical processing such as hair removal and tanning. Leather is composed of natural protein fibers tightly woven in three-dimensional space. Its surface has a special grain layer with natural grain and luster, and a comfortable feel. In the leather production process, for the convenience of transportation and storage, leather is generally rolled up. Unwinding devices are required for rolling up leather.

[0003] In existing technologies, dust particles and residual crystals of tanning agents easily accumulate on the surface of leather during the unwinding process. Once impurities are drawn into the winding system, multiple damages will occur. For example, sharp particles can scratch the grain layer of the leather surface and destroy the natural texture, while micron-sized dust can easily embed itself in the gaps between fibers, causing spots in subsequent coating processes. Existing dust removal units are mostly set up as independent workstations, requiring the unwinding process to be interrupted and the leather to be transferred during cleaning, which seriously restricts production efficiency. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a leather processing unwinding device, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a leather processing unwinding device, comprising a mounting frame, on which two sets of symmetrically distributed movable frames are slidably mounted, and a bidirectional lead screw is rotatably mounted inside the mounting frame. The two ends of the bidirectional lead screw pass through the two sets of movable frames and are threadedly connected to the two sets of movable frames respectively. Each set of movable frames is rotatably mounted with a retaining seat, and a winding roller is provided between the two sets of movable frames. The two ends of the winding roller are movably engaged with the two sets of retaining seats respectively. The mounting frame is provided with an adsorption cleaning mechanism for cleaning the leather surface.

[0008] The adsorption cleaning mechanism includes a carbon fiber brush rotatably mounted on a mounting frame. A conductive slip ring is provided on the mounting frame. The rotor end of the conductive slip ring body is fixed to the end of the rotating shaft of the carbon fiber brush through a heat fitting process. The sub-end of the conductive slip ring is fixedly mounted on the mounting frame through an insulating flange. An electrostatic generator is provided on the right side of the mounting frame. The high-voltage output end of the electrostatic generator is connected to the input contact of the stator end of the conductive slip ring through a shielded cable. The output contact of the rotor end of the conductive slip ring is connected to the carbon fiber brush. The mounting frame is provided with a fixing bracket corresponding to the carbon fiber brush. The mounting frame is also provided with a dust collection mechanism for cleaning the carbon fiber brush.

[0009] Preferably, a scraper is slidably installed inside the fixing frame, the scraper is fitted with a corresponding carbon fiber brush, a fixing rod is fixedly installed inside the fixing frame, the scraper is slidably sleeved with the fixing rod, and a first cam is rotatably installed on the fixing frame.

[0010] Preferably, two sets of symmetrically distributed first springs are sleeved on the fixing rod, and the two ends of the two sets of first springs are respectively fixedly connected to the scraper and the fixing frame, and the first cam is fitted to the scraper.

[0011] Preferably, the dust collection mechanism includes a mounting box fixedly mounted on a mounting frame. The mounting box has an air inlet, and the mounting frame has a dust collection port that is fitted to the surface of the carbon fiber brush. The dust collection port is fixedly mounted on the mounting frame and is fixedly connected to the air inlet through a connecting pipe. A negative pressure fan is embedded in the mounting box, and a mounting plate is fixedly mounted inside the mounting box. The negative pressure fan and the air inlet are located on opposite sides of the mounting plate. Multiple filter cartridges are fixedly mounted on the mounting plate, and each filter cartridge has an air outlet, which is correspondingly positioned to correspond to the negative pressure fan.

[0012] Preferably, a positioning frame is fixedly installed inside the installation box, and annular brushes are fitted onto multiple filter cartridges. The annular brushes are fitted in close contact with the surface of the filter cartridges, and the multiple annular brushes are fixedly connected to each other by a connecting frame. The connecting frame is slidably connected to the positioning frame.

[0013] Preferably, a slide rod is fixedly installed inside the positioning frame, and the connecting frame is slidably sleeved with the slide rod. Two sets of symmetrically distributed second springs are sleeved on the slide rod. The two ends of the two sets of second springs are fixedly connected to the connecting frame and the positioning frame, respectively. A second cam is rotatably installed inside the positioning frame, and the second cam is fitted with the connecting frame.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, the present invention provides a leather processing unwinding device, which has the following beneficial effects:

[0016] Two sets of symmetrically distributed carbon fiber brushes are used in conjunction with an electrostatic generator to simultaneously exert the dual effects of physical brushing and electrostatic adsorption. The conductive properties of carbon fiber ensure uniform distribution of static charge, powerfully capturing micron-sized dust and residual crystals, significantly improving the removal rate of deeply embedded fiber impurities, preventing subsequent coating spots from the source, timely removing sharp particles on the surface, and eliminating scratches on the grain layer caused by impurities being rolled into the winding system. It completely preserves the natural texture, luster, and feel of the leather. A specially designed scraping mechanism scrapes away impurities accumulated on the surface in real time during the reciprocating sliding of the brush, preventing contaminants from re-contaminating the leather and ensuring that the carbon fiber brush is always in optimal cleanliness. An integrated negative pressure dust collection mechanism powerfully removes dust stripped by the scraping and dust remaining deep within the brush, solving the pain point of traditional brushes being prone to saturation and failure, and maintaining long-lasting and stable dust removal performance. A ring-shaped rotating brush is set inside the dust collection mechanism to automatically clean the surface of the filter cartridge, effectively preventing filter pore blockage, ensuring unobstructed airflow, and avoiding suction power reduction caused by increased filter cartridge resistance. The filter cartridge self-cleaning function eliminates the need to stop the machine to replace or manually clean the filter element, enabling continuous and uninterrupted operation of the dust removal system. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of a partially disassembled structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the adsorption cleaning mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the dust collection mechanism of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the filter cartridge of this utility model;

[0023] Figure 6 This utility model Figure 5 A magnified schematic diagram of the structure at point A in the diagram.

[0024] In the diagram: 1. Mounting frame; 2. Movable frame; 3. Bidirectional lead screw; 4. Card holder; 5. Rewind roller; 6. Adsorption cleaning mechanism; 601. Carbon fiber brush; 602. Conductive slip ring; 603. Static generator; 604. Fixed frame; 605. Fixed rod; 606. First spring; 607. First cam; 608. Scraper; 7. Dust collection mechanism; 701. Mounting box; 702. Negative pressure fan; 703. Air inlet; 704. Mounting plate; 705. Filter cartridge; 706. Air outlet; 707. Positioning frame; 708. Annular brush; 709. Connecting frame; 710. Slide rod; 711. Second spring; 712. Second cam; 713. Dust collection port. Detailed Implementation

[0025] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0026] Figures 1-6 In one embodiment of this utility model, a leather processing unwinding device includes a mounting frame. Two sets of symmetrically distributed movable frames are slidably mounted on the mounting frame. A bidirectional lead screw is rotatably mounted inside the mounting frame, with both ends of the lead screw passing through and threadedly connected to the two sets of movable frames respectively. Each set of movable frames has a rotatably mounted retainer. A winding roller is provided between the two sets of movable frames, with both ends of the winding roller movably engaged with the two retainers respectively. The mounting frame is equipped with an adsorption cleaning mechanism for cleaning the leather surface. The adsorption cleaning mechanism includes a carbon fiber brush rotatably mounted on the mounting frame. The mounting frame is equipped with a conductive slip ring. The rotor end of the electric slip ring body is fixed to the end of the carbon fiber brush rotating shaft using a heat-shrink process. The conductive slip ring sub-end is fixedly mounted on the mounting bracket via an insulating flange. An electrostatic generator is located on the right side of the mounting bracket. The high-voltage output end of the electrostatic generator is connected to the input contact of the stator end of the conductive slip ring via a shielded cable. The output contact of the rotor end of the conductive slip ring is connected to the carbon fiber brush. The mounting bracket has a fixing bracket corresponding to the carbon fiber brush and a dust collection mechanism for cleaning the carbon fiber brush. Two sets of symmetrically distributed carbon fiber brushes are used in conjunction with the electrostatic generator to simultaneously exert the dual effects of physical brushing and electrostatic adsorption. The conductivity of carbon fiber ensures uniform distribution of static charge, powerfully capturing micron-sized dust and residual crystals, significantly improving the removal rate of deeply embedded fiber impurities, preventing subsequent coating spots from the source, timely removing sharp particles on the surface, and preventing scratches on the grain layer caused by impurities being rolled into the winding system.

[0027] In this embodiment, reference Figure 2 , Figure 3As shown, a scraper is slidably installed inside the fixed frame, and the scraper is fitted with the corresponding carbon fiber brush. A fixed rod is fixedly installed inside the fixed frame, and the scraper is slidably sleeved with the fixed rod. A first cam is rotatably installed on the fixed frame, and two sets of symmetrically distributed first springs are sleeved on the fixed rod. The two ends of the two sets of first springs are fixedly connected to the scraper and the fixed frame, respectively. The first cam is fitted with the scraper. An electrostatic generator applies a high voltage charge to the two sets of symmetrically distributed carbon fiber brushes to form a uniform electrostatic field on their surface. The high conductivity of carbon fiber ensures a stable charge distribution and enhances its ability to adsorb particles. During the unwinding process, the leather passes continuously between two sets of carbon fiber brushes. The carbon fiber brushes rotate at high speed, and the bristles directly contact the leather surface to remove attached dust and residual crystals. The electrostatic field strongly captures micron-sized dust particles, especially deeply embedded fiber impurities that are difficult to remove with traditional brushes, preventing them from being drawn into the winding system. It thoroughly removes sharp particles (to prevent scratching the grain layer) and fine dust (to prevent coating spots), protecting the natural texture of the leather. During the rotation of the carbon fiber brushes, impurities accumulated on their surface are scraped off in real time by the closely attached scraping mechanism, preventing contaminants from being transferred to the leather again or clogging the brush gaps. The motor in the fixed frame drives the first cam to rotate, and the scraper set in contact with the first cam is pushed. With the help of the fixed rod and the first spring, the scraper slides back and forth on the fixed frame to clean the impurities on the surface of the carbon fiber brushes.

[0028] In this embodiment, reference Figure 4 and Figure 5 , Figure 6As shown, the vacuuming mechanism includes a mounting box fixedly mounted on a mounting frame. The mounting box has an air inlet, and the mounting frame has a suction port that is fitted to the surface of the carbon fiber brush. The suction port is fixedly mounted on the mounting frame and is connected to the air inlet via a connecting pipe. A negative pressure fan is embedded inside the mounting box, and a mounting plate is fixedly mounted inside the mounting box. The negative pressure fan and the air inlet are located on opposite sides of the mounting plate. Multiple filter cartridges are fixedly mounted on the mounting plate, and each filter cartridge has an air outlet corresponding to the negative pressure fan. A positioning frame is fixedly mounted inside the mounting box. Each of the multiple filter cartridges has a ring brush fitted onto it, with the ring brush fitting snugly to the surface of the filter cartridge. The multiple ring brushes are fixedly connected to each other via a connecting frame. The connecting frame and the positioning frame are slidably connected. A sliding rod is fixedly mounted inside the positioning frame, and the connecting frame and the sliding rod are slidably fitted together. Two symmetrically distributed second springs are fitted onto the sliding rod, with the ends of the two second springs respectively connected to the connecting frame and the... The positioning frame is fixedly connected, and a second cam is rotatably installed inside the positioning frame. The second cam is fitted with the connecting frame. The negative pressure suction mechanism located behind the scraper brush has a negative pressure fan that instantly draws in the dust, absorbing the blocky impurities peeled off by the scraper brush and the fine dust remaining deep in the carbon fiber brush. This prevents the carbon fiber brush from becoming saturated and ineffective, ensuring that it maintains high dust removal efficiency. When dust gradually accumulates on the surface of the filter cartridge of the suction mechanism, the motor on the positioning frame inside the mounting box drives the second cam to rotate, pushing the connecting frame that is fitted with it. With the help of the slide rod and the second spring, the connecting frame drives multiple sets of ring brushes to slide up and down. The ring brushes remove the dust that is not attached to the corresponding filter cartridge. The dust that is brushed off falls to the bottom of the mounting box under the action of gravity. The cleaned filter cartridge restores its breathability, ensuring a stable and smooth airflow for dust collection. This avoids suction power attenuation due to filter pore blockage, enabling the filter cartridge to be self-maintained without stopping the machine, and supporting the long-term operation of the dust collection system.

[0029] In this embodiment, during operation, an electrostatic generator applies a high-voltage charge to two symmetrically distributed carbon fiber brushes, creating a uniform electrostatic field on their surfaces. The high conductivity of carbon fiber ensures a stable charge distribution, enhancing its ability to adsorb particles. During the unwinding process, the leather continuously passes between the two sets of carbon fiber brushes. The carbon fiber brushes rotate at high speed, with the bristles directly contacting the leather surface to remove attached dust and residual crystals. The electrostatic field powerfully captures micron-sized airborne dust, especially deeply embedded fiber impurities that are difficult to remove with traditional brushes, preventing them from being drawn into the winding system. This thoroughly removes sharp particles (to prevent scratching the grain layer) and fine dust (to prevent coating spots), protecting the natural texture of the leather. During the rotation of the carbon fiber brushes, impurities accumulated on their surface are scraped off in real time by a closely fitted scraping mechanism, preventing secondary transfer of contaminants to the leather or clogging of the brush gaps. The motor in the fixed frame is activated, driving the first cam to rotate. The scraper, which is fitted to the first cam, is pushed, and in conjunction with the fixed rod and the first spring, the scraper slides back and forth on the fixed frame. This system cleans impurities from the surface of the carbon fiber brush. A negative pressure fan in the negative pressure suction mechanism behind the brush instantly draws in the dust, absorbing the lumpy impurities removed by the brush and the fine dust remaining deep within the carbon fiber brush. This prevents the carbon fiber brush from becoming saturated and ineffective, ensuring it maintains high dust removal efficiency. As dust accumulates on the filter cartridge surface due to interception, a motor on the positioning frame inside the mounting box drives the second cam to rotate, pushing the connecting frame that it is in contact with. This, along with a slide rod and a second spring, causes the connecting frame to move multiple sets of annular brushes up and down repeatedly. The annular brushes remove dust from the corresponding filter cartridge, and the brushed-off dust falls to the bottom of the mounting box under gravity. The cleaned filter cartridge regains its breathability, ensuring stable and smooth airflow for dust collection, preventing suction power loss due to filter clogging, achieving self-maintenance of the filter cartridge without downtime, and supporting the long-term operation of the dust collection system.

[0030] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0031] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leather processing unwinding device, comprising a mounting frame, characterized in that: Two sets of symmetrically distributed movable frames are slidably mounted on the mounting frame. A bidirectional screw is rotatably mounted inside the mounting frame. The two ends of the bidirectional screw pass through the two sets of movable frames and are threadedly connected to the two sets of movable frames respectively. A retaining seat is rotatably mounted on each set of movable frames. A winding roller is provided between the two sets of movable frames. The two ends of the winding roller are movably engaged with the two sets of retaining seats respectively. An adsorption cleaning mechanism for cleaning leather surfaces is provided on the mounting frame. The adsorption cleaning mechanism includes a carbon fiber brush rotatably mounted on a mounting frame. A conductive slip ring is provided on the mounting frame. The rotor end of the conductive slip ring body is fixed to the end of the rotating shaft of the carbon fiber brush through a heat fitting process. The sub-end of the conductive slip ring is fixedly mounted on the mounting frame through an insulating flange. An electrostatic generator is provided on the right side of the mounting frame. The high-voltage output end of the electrostatic generator is connected to the input contact of the stator end of the conductive slip ring through a shielded cable. The output contact of the rotor end of the conductive slip ring is connected to the carbon fiber brush. The mounting frame is provided with a fixing bracket corresponding to the carbon fiber brush. The mounting frame is also provided with a dust collection mechanism for cleaning the carbon fiber brush.

2. A leather processing unwinding device according to claim 1, characterized in that: A scraper is slidably installed inside the fixed frame, and the scraper is fitted with a corresponding carbon fiber brush. A fixed rod is fixedly installed inside the fixed frame, and the scraper is slidably sleeved with the fixed rod. A first cam is rotatably installed on the fixed frame.

3. A leather processing unwinding device according to claim 2, characterized in that: Two sets of symmetrically distributed first springs are sleeved on the fixed rod. The two ends of the two sets of first springs are fixedly connected to the scraper and the fixed frame, respectively. The first cam is fitted to the scraper.

4. The leather processing unwinding device according to claim 1, characterized in that: The dust collection mechanism includes a mounting box fixedly mounted on a mounting frame. The mounting box has an air inlet. The mounting frame has a dust collection port that is fitted to the surface of the carbon fiber brush. The dust collection port is fixedly mounted on the mounting frame and is fixedly connected to the air inlet through a connecting pipe. A negative pressure fan is embedded in the mounting box. A mounting plate is fixedly mounted inside the mounting box. The negative pressure fan and the air inlet are located on opposite sides of the mounting plate. Multiple filter cartridges are fixedly mounted on the mounting plate, and each filter cartridge has an air outlet. The air outlets are correspondingly positioned to correspond with the negative pressure fan.

5. A leather processing unwinding device according to claim 4, characterized in that: The mounting box is fixedly installed with a positioning frame. Multiple filter cartridges are fitted with annular brushes. The annular brushes are fitted in close contact with the surface of the filter cartridges. The multiple annular brushes are fixedly connected by a connecting frame, and the connecting frame is slidably connected to the positioning frame.

6. A leather processing unwinding device according to claim 5, characterized in that: A slide rod is fixedly installed inside the positioning frame. The connecting frame is slidably sleeved with the slide rod. Two sets of symmetrically distributed second springs are sleeved on the slide rod. The two ends of the two sets of second springs are fixedly connected to the connecting frame and the positioning frame, respectively. A second cam is rotatably installed inside the positioning frame. The second cam is fitted with the connecting frame.

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