Modular magnetic cloth pressing guide roller for a spreading machine

Abstract

The present invention discloses a modular magnetic cloth pressing guide roller for a spreading machine, which relates to the technical field of spreading machines, including a spreading machine; an adjustment component for adjustment is fixedly arranged on the side surface of the front end of the spreading machine; a modular guide roller is rotatably installed on the top of the side surface of the adjustment component, and can be quickly positioned and connected with the connecting component through the physical docking of the conical boss on the side surface of the guide roller body and the annular groove and the magnetic sealing ring adsorption design, and the electromagnetic driving mechanism of the connecting component can dynamically adjust the distance between the telescopic tube and the guide roller body to ensure the tightness of the axial connection; the magnetic suspension system controlled by the closed-loop feedback of the electromagnet and the rotating action of the guide roller body are combined, and the magnetic field strength is adjusted in real time and the air flow diversion and heat dissipation design are integrated to realize contactless and zero-friction transmission of the cloth, and a full-circular low-friction contact interface is dynamically formed with the help of the adaptive tension compensation structure of the metal wire component; the synergistic effect realizes a modular guide roller structure with high reliability and dynamic adaptability.

Description

Technical Field

[0001] The invention relates to the technical field of cloth spreading machines, in particular to a modular magnetic cloth pressing guide roller for a cloth spreading machine. Background Art

[0002] In the automated production process of the textile industry, the cloth-laying machine's cloth-pressing guide roller is a core component that determines the flatness and tension of the fabric. Traditional guide rollers are mostly mechanically fixed structures, which have technical bottlenecks such as low adjustment sensitivity and cumbersome module replacement. Especially when dealing with fabrics of different materials, the machine needs to be stopped and disassembled to adjust the pressure parameters, which seriously affects production efficiency.

[0003] Although there have been attempts to use magnetic guide rollers in the existing technology, their electromagnetic components are mostly of integral design, which leads to local stress concentration problems caused by uneven magnetic field distribution. They also lack a modular quick power connection system, resulting in high maintenance costs and delayed response. In addition, the surface pore structure of conventional guide rollers is single, and the airflow guidance is poor, making it difficult to achieve a dynamic balance between fabric adsorption and separation, and prone to wrinkling or slippage. Summary of the Invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a modular magnetic cloth pressing guide roller for a spreading machine.

[0005] The present invention is achieved in this way: a modular magnetic cloth pressing guide roller of a spreading machine is constructed, and the device includes a spreading machine; an adjustment component for adjustment is fixedly provided on the front end side of the spreading machine; a modular guide roller is rotatably installed on the top side of the adjustment component; a drive guide roller is rotatably provided inside the front end frame of the spreading machine; and a connecting component is rotatably installed on the bottom side of the drive guide roller.

[0006] Preferably, the adjustment component is specifically composed of a cylinder, a mounting plate arranged at the end of the cylinder piston rod, and a conductive column fixedly installed on the side of the mounting plate, and a rubber plate for sealing is glued and fixed to the side of the mounting plate; the modular guide roller includes a guide roller body rotatably mounted on the side of the adjustment component mounting plate; a magnetic conductive component is fixedly arranged inside the guide roller body; quick power connection components are fixedly installed on the left and right sides of the magnetic conductive component by bolts; a limiting groove is provided on the outer surface of the guide roller body; a metal wire component is fixedly provided inside the guide roller body; a wire mesh is glued and provided on the outer surface of the metal wire component; and a conical air hole for diversion is provided on the surface of the guide roller body.

[0007] Preferably, the magnetic conductive component includes a magnetic isolation protection tube fixedly installed inside the guide roller body; through holes are arranged on the upper and lower sides of the magnetic isolation protection tube, and elastic isolation tubes are pasted and fixed on the through holes; an electromagnet is fixedly installed on the outside of the magnetic isolation protection tube, and the electromagnet is in a semicircular C shape; an electric control switch is fixedly installed at the side port of the electromagnet via a cable; a single-unit controller is fixedly installed on the middle side of the internal part of the magnetic isolation protection tube by bolts, and the single-unit controller is fixedly connected to the quick power connection component through a line.

[0008] Preferably, the metal wire assembly includes a limit cylinder fixedly arranged inside the magnetic isolation protective cylinder; a reset spring with a reset function is fixed to the inner rear wall of the magnetic isolation protective cylinder by welding; a first propulsion sleeve with an adjustment function is fixedly installed on both sides of the inner rear wall of the magnetic isolation protective cylinder by bolts; a magnetic isolation rod is fixedly installed at the front end of the internal combination rod of the first propulsion sleeve; the magnetic isolation rod is plugged and fixedly installed at the rear end of the base plate; a metal wire is plugged and fixedly installed at the front end of the base plate, and a limit spring is sleeved on the outer side of the metal wire; the metal wire passes through the elastic isolation cylinder and is glued and fixed to the wire mesh.

[0009] Preferably, the connecting assembly includes a card plate fixedly mounted on the side of the guide roller body; a microporous plate is fixedly mounted at the central through hole of the card plate by bolts; a conductive part is fixedly mounted at the internal through hole of the microporous plate by bolts; a telescopic tube with a protective function is fixedly mounted on the outer ring of the side of the card plate by gluing; the card plate is fixedly mounted on the left and right sides of the second propulsion sleeve; a torsion spring with a reset function is welded and fixed at the rear end of the second propulsion sleeve, and the torsion spring is fixedly arranged on the front and rear sides of the reel.

[0010] Preferably, the quick-connect assembly and the conductive member are both composed of an insulating plate, a connecting piece arranged on the insulating plate, and a cable.

[0011] Preferably, the first propulsion sleeve and the second propulsion sleeve are both composed of an insulating outer cylinder, coils arranged on the inner wall of the insulating outer cylinder, and a cylindrical coil block slidably arranged inside the insulating outer cylinder.

[0012] Preferably, the single-unit controller has a built-in wireless communication module and establishes a data connection with the main control system of the spreading machine to receive the magnetic attraction adjustment instruction of the electromagnet; the C-shaped open end of the electromagnet is provided with a magnetic induction sensor, which is connected to the single-unit controller signal to form a closed-loop feedback control system.

[0013] Preferably, the conical air holes are distributed in a spiral array along the axial direction of the guide roller body, and the opening direction of the conical large end is opposite to the rotation direction of the guide roller body; the inner wall of the conical air hole is inlaid with a wear-resistant ceramic ring.

[0014] Preferably, the joint surface between the clamping plate and the guide roller body is provided with a self-aligning conical boss, the surface of the microporous plate is provided with an annular groove concentric with the conductive part, and a magnetic sealing ring is embedded in the groove; the telescopic tube adopts a multi-layer corrugated metal tube structure, and an insulating shielding layer is laid on its inner wall.

[0015] A method for using a modular magnetic cloth pressing guide roller of a spreading machine comprises the following steps:

[0016] Step 1: Modular physical docking and sealing, automatic connection of power and signal;

[0017] The tapered boss and the annular groove are aligned to mechanically lock the clamping plate on the side of the guide roller body with the corresponding structure of the adjacent module. The central conductive part of the clamping plate and the quick-connect assembly are automatically aligned to achieve seamless power transmission and signal communication between modules.

[0018] Step 2: Dynamic spacing adjustment mechanism: electromagnetically drive the cylindrical coil block of the second propulsion sleeve to slide and adjust the spacing between the clamping plates to ensure the physical tightness of the axial connection;

[0019] Step 3: Closed-loop magnetic force regulation system; the single controller supplies energy to the electromagnet in real time and dynamically adjusts the electromagnet's power intensity, forming a magnetic attraction feedback closed loop to maintain a stable magnetic levitation state;

[0020] Step 4: Dynamic compensation structure: The first propulsion sleeve is linked to the magnetic isolation rod to control the expansion and contraction of the metal wire to achieve tension compensation, and a dynamic full-circle contact surface is formed by combining two sets of metal wires;

[0021] Step 5: Frictionless transmission is achieved; magnetic levitation is achieved through the magnetic field between the electromagnet and the metal wire, and the air flow introduced into the connecting pipe at the top of the telescopic tube flows out through the microporous plate and conical air holes. The air flow takes away the heat of the electromagnet and forms an air film on the surface, reducing the friction between the guide roller body and the cloth, and achieving low-contact transmission.

[0022] The present invention has the following advantages: The present invention provides a modular magnetic cloth pressing guide roller for a spreading machine through improvement, which has the following improvements compared with similar equipment:

[0023] The modular magnetic cloth pressing guide roller of a spreading machine described in the present invention can quickly be positioned and connected with the connecting component through the physical docking of the conical boss on the side of the guide roller body and the annular groove and the magnetic sealing ring adsorption design, and dynamically adjust the distance between the telescopic tube and the guide roller body through the electromagnetic drive mechanism of the connecting component to ensure the tightness of the axial connection; the magnetic levitation system combined with the closed-loop feedback control of the electromagnet and the rotation of the guide roller body can realize contactless and zero-friction transmission of the cloth by real-time adjustment of the magnetic field strength and integration of air flow diversion and heat dissipation design, and dynamically form a full-circular low-friction contact interface with the help of the adaptive tension compensation structure of the metal wire component; the synergistic effect realizes a modular guide roller structure with high reliability and dynamic adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the axial structure of the modular guide roller and connecting assembly of the present invention;

[0026] Figure 3 This is a schematic diagram of the modular guide roller shaft side structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the cross-sectional structure of the modular guide roller of the present invention;

[0028] Figure 5 is a schematic cross-sectional structural diagram of a metal wire assembly of the present invention;

[0029] Figure 6 It is a schematic cross-sectional structural diagram of the connection assembly of the present invention.

[0030] Among them: spreading machine-1, adjustment component-2, modular guide roller-3, drive guide roller-4, connection component-5, guide roller body-31, magnetic conductive component-32, quick power connection component-33, limit groove-34, wire assembly-35, wire mesh-36, conical air hole-37, magnetic shielding cylinder-321, elastic shielding cylinder-322, electromagnet-323, electric control switch-324, single controller-325, limit cylinder-351, return spring-352, first propulsion sleeve-353, magnetic shielding rod-354, bottom plate-355, wire-356, limit spring-357, card plate-51, microporous plate-52, conductive part-53, telescopic tube-54, second propulsion sleeve-55, torsion spring-56, winder-57. DETAILED DESCRIPTION

[0031] The following is combined with Figures 1 to 6The principles and features of the present invention are described, and the examples given are only for the purpose of explaining the present invention and are not intended to limit the scope of the present invention. The following paragraphs describe the present invention in more detail by way of example with reference to the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not to exact scale, and are only used for the purpose of conveniently and clearly assisting in illustrating the embodiments of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0034] Example 1:

[0035] See also Figures 1 to 6 The modular magnetic cloth pressing guide roller of a spreading machine of the present invention includes a spreading machine 1; an adjustment component 2 for adjustment is fixedly provided on the front end side of the spreading machine 1; a modular guide roller 3 is rotatably installed on the top side of the adjustment component 2; a driving guide roller 4 is rotatably provided inside the front end frame of the spreading machine 1; a connecting component 5 is rotatably installed on the bottom side of the driving guide roller 4.

[0036] The adjustment component 2 is specifically composed of a cylinder, a mounting plate arranged at the end of the cylinder piston rod, and a conductive column fixedly installed on the side of the mounting plate, and a rubber plate for sealing is glued and fixed to the side of the mounting plate; the modular guide roller 3 includes a guide roller body 31 rotatably mounted on the side of the mounting plate of the adjustment component 2; a magnetic conductive component 32 is fixedly arranged inside the guide roller body 31; quick power connection components 33 are fixedly installed on both sides of the magnetic conductive component 32 by bolts; a limiting groove 34 is provided on the outer surface of the guide roller body 31; a metal wire component 35 is fixedly provided inside the guide roller body 31; a wire mesh 36 is glued to the outer surface of the metal wire component 35; and a conical air hole 37 for diversion is provided on the surface of the guide roller body 31.

[0037] The magnetic conductive component 32 includes a magnetic isolation protection tube 321 fixedly installed inside the guide roller body 31; through holes are arranged on the upper and lower sides of the magnetic isolation protection tube 321, and elastic isolation tubes 322 are glued and fixed on the through holes; an electromagnet 323 is fixedly installed on the outside of the magnetic isolation protection tube 321, and the electromagnet 323 is in a semicircular C shape; an electric control switch 324 is fixedly installed at the side port of the electromagnet 323 via a cable; a single unit controller 325 is fixedly installed on the middle side of the internal magnetic isolation protection tube 321 by bolts, and the single unit controller 325 is fixedly connected to the quick power connection component 33 through a line.

[0038] The metal wire assembly 35 includes a limit tube 351 fixedly arranged inside the magnetic isolation protection tube 321; a reset spring 352 with a reset function is fixed to the inner rear wall of the magnetic isolation protection tube 321 by welding; a first propulsion sleeve 353 with an adjustment function is fixedly installed on both sides of the inner rear wall of the magnetic isolation protection tube 321 by bolts; a magnetic isolation rod 354 is fixedly installed at the front end of the internal combination rod of the first propulsion sleeve 353; the magnetic isolation rod 354 is plugged and fixedly installed at the rear end of the base plate 355; a metal wire 356 is plugged and fixedly installed at the front end of the base plate 355, and a limit spring 357 is sleeved on the outside of the metal wire 356; the metal wire 356 passes through the elastic isolation tube 322 and is glued and fixed to the wire mesh 36.

[0039] The single-unit controller 325 has a built-in wireless communication module and establishes a data connection with the main control system of the spreading machine 1, which is used to receive the magnetic attraction adjustment instruction of the electromagnet 323; the C-shaped open end of the electromagnet 323 is provided with a magnetic induction sensor, which is connected to the signal of the single-unit controller 325 to form a closed-loop feedback control system.

[0040] The conical air holes 37 are distributed in a spiral array along the axial direction of the guide roller body 31 , and the opening direction of the conical large end is opposite to the rotation direction of the guide roller body 31 ; the inner wall of the conical air hole 37 is inlaid with a wear-resistant ceramic ring.

[0041] Example 2:

[0042] See also Figures 1 to 6Compared with the first embodiment, the modular magnetic cloth pressing guide roller of a spreading machine of the present invention further includes: a connecting component 5 includes a card plate 51 fixedly mounted on the side of the guide roller body 31; a microporous plate 52 is fixedly mounted at the central through hole of the card plate 51 by bolts; a conductive member 53 is fixedly mounted at the internal through hole of the microporous plate 52 by bolts; a telescopic tube 54 with a protective function is fixedly mounted on the outer ring of the side of the card plate 51 by gluing, and a through hole is provided at the top of the telescopic tube 54, and the through hole is connected to the external air pipe through a connecting pipe; the card plate 51 is fixedly mounted on the left and right sides of the second propulsion sleeve 55; a torsion spring 56 with a reset function is welded and fixed to the rear end of the second propulsion sleeve 55, and the torsion spring 56 is fixedly arranged on the front and rear sides of the winder 57.

[0043] The quick-connect assembly 33 and the conductive member 53 are both composed of an insulating plate, a connecting piece arranged on the insulating plate, and a cable.

[0044] The first propulsion sleeve 353 and the second propulsion sleeve 55 are both composed of an insulating outer cylinder, coils arranged on the inner wall of the insulating outer cylinder, and a cylindrical coil block slidably arranged inside the insulating outer cylinder.

[0045] The joint surface between the clamping plate 51 and the guide roller body 31 is provided with a self-aligning conical boss, and the surface of the microporous plate 52 is provided with an annular groove concentric with the conductive part 53, and a magnetic sealing ring is embedded in the groove; the telescopic tube 54 adopts a multi-layer corrugated metal tube structure, and its inner wall is covered with an insulating shielding layer 541.

[0046] The working principle of the modular magnetic cloth pressing guide roller of the above-mentioned spreading machine is:

[0047] When using this device, first place it in the work area, then connect the device to an external power source to provide the power required for operation. During the multi-stage installation of the modular guide roller 3, the clamping plate 51 on the side of the guide roller body 31 is physically connected to the corresponding structure of the adjacent guide roller. The self-aligning conical boss is embedded in the annular groove of the adjacent module. The magnetic sealing ring enhances the sealing and adsorption force of the joint surface. The conductive member 53 provided in the center of the clamping plate 51 and the quick-connect assembly 33 are automatically aligned and connected, realizing the transmission of power and signals between the modules.

[0048] At the same time, the telescopic tube 54 on the outer ring of the card plate 51 is telescopically adjusted under the electromagnetic drive of the second propulsion sleeve 55. Here, the coil inside the second propulsion sleeve 55 is energized to push the cylindrical coil block inside it to slide outward. Here, the side rod of the second propulsion sleeve 55 drives the two adjacent groups of card plates 51 to adjust the spacing, ensuring the tightness of the axial connection of the guide roller; the single controller 325 in the quick power connection component 33 and the magnetic conductive component 32 is energized to form a closed-loop feedback system for adjusting the power supply intensity of the electromagnet 323 in real time to adjust its magnetic attraction intensity. Here, the electromagnet 323 and the wire mesh 36 on the outside of the guide roller body 31 are affected by the magnetic field of the electromagnet 323 to realize the practical application of magnetic levitation phenomenon;

[0049] Then the metal wire assembly 35 in the guide roller body 31 is linked to the first propulsion sleeve 353 through the magnetic isolation rod 354. Here, the first propulsion sleeve 353 and the second propulsion sleeve 55 have the same internal structure. The first propulsion sleeve 353 pushes the bottom plate 355 to slide inside the limiting cylinder 351, and under the reset action of the reset spring 352, the bottom plate 355 can pull the metal wire 356 to reset after the first propulsion sleeve 353 is powered off. At the same time, the reset action of the limiting spring 357 can also enable the metal wire 356 to dynamically compensate for the connection tension when it extends out of the limiting cylinder 351, so that the metal wire 356 forms a semicircular structure on the outside of the guide roller body 31. By setting two groups of metal wires 356, a complete circle can be formed on the outside of the guide roller body 31. During the cloth pressing and guiding process, the metal wires 356 can be used to contact the cloth to reduce friction. At the same time, zero-contact and zero-friction transmission can be achieved under the rotation of the metal wires 356 and the guide roller body 31. Under the gas diversion effect of the connecting tube at the top of the telescopic tube 54, the air flow is discharged from the inside of the guide roller body 31 through the conical air holes 37. When the gas flows through the electromagnet 323, it can take away heat and blow it out on the surface of the guide roller body 31 to form a small-scale air pressure environment. Through the dual cooperation of magnetic field regulation and gas flow, a certain degree of contactless transmission can be achieved.

[0050] The present invention provides a modular magnetic cloth pressing guide roller for a spreading machine through improvement. Through the physical docking of the conical boss on the side of the guide roller body 31 and the annular groove and the magnetic sealing ring adsorption design, it can quickly be positioned and connected with the connecting component 5, and the electromagnetic drive mechanism of the connecting component 5 can dynamically adjust the distance between the telescopic tube 54 and the guide roller body 31 to ensure the tightness of the axial connection; the magnetic suspension system controlled by the closed-loop feedback of the electromagnet 323 and the rotation of the guide roller body 31 are combined to achieve contactless and zero-friction transmission of the cloth by real-time adjustment of the magnetic field strength and integration of airflow diversion and heat dissipation design, and dynamically form a full-circular low-friction contact interface with the help of the adaptive tension compensation structure of the metal wire component; the synergistic effect realizes a modular guide roller structure with high reliability and dynamic adaptability.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0052] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular magnetic cloth pressing guide roller for a spreading machine, comprising a spreading machine (1); an adjusting assembly (2) for adjusting the cloth is fixedly provided on the side of the front end of the spreading machine (1); a modular guide roller (3) is rotatably mounted on the top of the side of the adjusting assembly (2); a driving guide roller (4) is rotatably mounted inside the front end frame of the spreading machine (1); a connecting assembly (5) is rotatably mounted on the bottom of the side of the driving guide roller (4); Its characteristics are: The adjustment component (2) specifically consists of a cylinder, a mounting plate arranged at the end of the cylinder piston rod, and a conductive column fixedly installed on the side of the mounting plate, and a rubber plate for sealing is glued and fixed on the side of the mounting plate; the modular guide roller (3) includes a guide roller body (31) rotatably mounted on the side of the mounting plate of the adjustment component (2); a magnetic conductive component (32) is fixedly arranged inside the guide roller body (31); a quick power connection component (33) is fixedly installed on both sides of the magnetic conductive component (32) by bolts; a limiting groove (34) is provided on the outer surface of the guide roller body (31); a metal wire component (35) is fixedly arranged inside the guide roller body (31); a wire mesh (36) is glued and installed on the outer surface of the metal wire component (35); and a conical air hole (37) for diversion is provided on the surface of the guide roller body (31); The magnetic conductive component (32) includes a magnetic shielding tube (321) fixedly mounted inside the guide roller body (31); through holes are arranged on the upper and lower sides of the magnetic shielding tube (321), and elastic shielding tubes (322) are fixedly attached to the through holes; an electromagnet (323) is fixedly mounted on the outside of the magnetic shielding tube (321), and the electromagnet (323) is in a semicircular C shape; an electric control switch (324) is fixedly mounted at a side port of the electromagnet (323) via a cable; a single-unit controller (325) is fixedly mounted on the middle side of the magnetic shielding tube (321) via bolts, and the single-unit controller (325) is fixedly connected to the quick power connection component (33) via a line; The metal wire assembly (35) includes a limit cylinder (351) fixedly arranged inside the magnetic isolation protection cylinder (321); a reset spring (352) with a reset function is fixed to the inner rear wall of the magnetic isolation protection cylinder (321) by welding; a first propulsion sleeve (353) with an adjustment function is fixedly installed on both the left and right sides of the inner rear wall of the magnetic isolation protection cylinder (321) by bolts; a magnetic isolation rod (354) is fixedly installed at the front end of the internal combination rod of the first propulsion sleeve (353); the magnetic isolation rod (354) is plugged and fixedly installed at the rear end of the bottom plate (355); a metal wire (356) is plugged and fixedly installed at the front end of the bottom plate (355), and a limit spring (357) is sleeved on the outer side of the metal wire (356); the metal wire (356) passes through the elastic isolation cylinder (322) and is glued and fixed to the wire mesh (36); The metal wires (356) form a semicircular structure outside the guide roller body (31), and a full circle can be formed outside the guide roller body (31) by providing two groups of metal wires (356).

2. The modular magnetic cloth pressing guide roller of a spreading machine according to claim 1, characterized in that: The connecting assembly (5) includes a clamping plate (51) fixedly mounted on the side of the guide roller body (31); a microporous plate (52) is fixedly mounted at the central through hole of the clamping plate (51) by means of bolts; a conductive member (53) is fixedly mounted at the internal through hole of the microporous plate (52) by means of bolts; a telescopic tube (54) with a protective function is fixedly mounted on the outer ring of the side of the clamping plate (51) by means of gluing; the clamping plate (51) is fixedly mounted on the left and right sides of the second propulsion sleeve (55); a torsion spring (56) with a reset function is welded and fixed to the rear end of the second propulsion sleeve (55), and the torsion spring (56) is fixedly arranged on the front and rear sides of the reel (57).

3. The modular magnetic cloth pressing guide roller of a spreading machine according to claim 2, characterized in that: The quick electrical connection assembly (33) and the conductive member (53) are both composed of an insulating plate, an electrical connection plate arranged on the insulating plate, and a cable.

4. The modular magnetic cloth pressing guide roller of a spreading machine according to claim 3, characterized in that: The first propulsion sleeve (353) and the second propulsion sleeve (55) are both composed of an insulating outer cylinder, coils arranged on the inner wall of the insulating outer cylinder, and a columnar coil block slidably arranged inside the insulating outer cylinder.

5. The modular magnetic cloth pressing guide roller of a spreading machine according to claim 4, characterized in that: The single-unit controller (325) has a built-in wireless communication module and establishes a data connection with the main control system of the spreading machine (1) for receiving the magnetic attraction adjustment instruction of the electromagnet (323); the C-shaped open end of the electromagnet (323) is provided with a magnetic induction sensor, which is connected to the single-unit controller (325) signal to form a closed-loop feedback control system.

6. The modular magnetic cloth pressing guide roller of a spreading machine according to claim 5, characterized in that: The conical air holes (37) are distributed in a spiral array along the axial direction of the guide roller body (31), and the opening direction of the conical large end is opposite to the rotation direction of the guide roller body (31); the inner wall of the conical air hole (37) is inlaid with a wear-resistant ceramic ring.

7. The modular magnetic cloth pressing guide roller of a spreading machine according to claim 6, characterized in that: A self-aligning conical boss is provided on the joint surface between the clamping plate (51) and the guide roller body (31); an annular groove concentric with the conductive member (53) is provided on the surface of the microporous plate (52); a magnetic sealing ring is embedded in the groove; the telescopic tube (54) adopts a multi-layer corrugated metal tube structure, and an insulating shielding layer (541) is applied on its inner wall.

8. A method for using a modular magnetic cloth pressing guide roller for a spreading machine, comprising: implementing the modular magnetic cloth pressing guide roller for a spreading machine as claimed in claim 7, wherein: The following steps are involved: Step 1: Modular physical docking and sealing, automatic connection of power and signal; The clamping plate (51) on the side of the guide roller body (31) is mechanically locked with the corresponding structure of the adjacent module by aligning and engaging the conical boss with the annular groove; the central conductive member (53) of the clamping plate (51) is automatically aligned with the quick-connect assembly (33), thereby achieving seamless conduction of power transmission and signal communication between modules; Step 2: Dynamic spacing adjustment mechanism; electromagnetically drive the cylindrical coil block of the second propulsion sleeve (55) to slide and adjust the spacing of the clamping plate (51) to ensure the physical tightness of the axial connection; Step 3, closed-loop magnetic force regulation system; the single-unit controller (325) supplies energy to the electromagnet (323) in real time and dynamically adjusts the power intensity of the electromagnet to form a magnetic attraction feedback closed loop to maintain a stable magnetic suspension state; Step 4: Dynamic compensation structure: the first propulsion sleeve (353) is linked to the magnetic isolation rod (354) to control the expansion and contraction of the metal wire (356) to achieve tension compensation, and a dynamic full-circle contact surface is formed by combining the two sets of metal wires (356); Step 5: Frictionless transmission is achieved; magnetic levitation is achieved through the magnetic field between the electromagnet (323) and the metal wire (356), and the air flow introduced through the connecting pipe at the top of the telescopic tube (54) flows out through the microporous plate (52) and the conical air hole (37). The air flow takes away the heat of the electromagnet (323) and forms an air film on the surface, reducing the friction between the guide roller body (31) and the cloth, thereby achieving low-contact transmission.

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