A nonwoven fabric edge material recovery machine and its control system

Abstract

The invention belongs to the technical field of textile equipment, and specifically discloses a non-woven fabric edge material recovery machine, comprising a guiding mechanism, a circulating arrangement mechanism, a core shaft, and a driving mechanism for driving the core shaft to rotate. The edge material delivered from a slitting machine is sequentially wound around the core shaft through the guiding mechanism and the circulating arrangement mechanism. The guiding mechanism is used to guide the edge material to change direction; the circulating arrangement mechanism is used to receive the edge material after the direction change from the guiding mechanism, and drive the edge material to swing back and forth along the axial direction of the core shaft; the driving mechanism comprises an adjusting part, a knurling roller, and a first driving part for driving the knurling roller to rotate, the edge material is clamped between the knurling roller and the core shaft, and the rotational force of the knurling roller is transmitted to the driven roller side through friction force, and the adjusting part is used to adjust the spacing between the knurling roller and the core shaft; the device can not only be used for rolling narrower cloth strips to avoid material waste, but is also suitable for slitting machines with higher speeds; in addition, the edge material is rolled separately to improve the efficiency of packaging and classification.

Description

Technical Field

[0001] The invention relates to the technical field of textile equipment, in particular to a nonwoven fabric edge material recovery machine and a control system thereof. Background Art

[0002] The slitting machine is a device that cuts wide raw materials such as rolls of nonwoven fabrics into small and narrow finished rolls. The edges of these raw material rolls often have defects during the manufacturing or transportation process. When the slitting machine cuts these raw materials, it must cut off the edge materials, resulting in waste edge materials with a width of 5~40mm. The system that handles these edge materials in the slitting machine is called the edge material processing system.

[0003] At present, the known non-woven fabric edge material processing system is composed of a slitting machine itself, or a slitting machine and a fan in series. When the slitting machine itself is rewinding, the waste edge material can be directly cut off and rolled directly on the winding core shaft. This structure has the advantages of not increasing the cost and can be collected synchronously with the finished roll. However, when the edge material is too narrow, the rolling effect is too poor and there is a situation where the edge collapses and affects the normal operation of the slitting machine. Therefore, the waste cloth strips need to maintain a certain width, resulting in material waste.

[0004] The edge material processing system composed of a slitter and a fan in series includes an edge blowing fan. The edge blowing fan is the air source, which generates gas with a certain pressure and flow rate. The air flow enters the edge blowing barrel through a hose, and the discarded edge materials enter the edge blowing barrel from two inlets, and are finally blown out from the outlet by the air flow. This edge material processing mechanism has the advantages of simple structure, low price, and integration with the slitter. However, it is limited by the power of the edge blowing fan (the greater the power, the greater the fan shape, vibration and noise, and energy consumption) and the structure and layout of the edge blowing barrel, the wind pressure and flow rate that can be generated are limited. If the blowing speed is less than the cutting speed, the edge materials will not be blown away in time and will accumulate. The slitting speed is generally below 200m / min, which is not suitable for high-speed slitting machines. Summary of the invention

[0005] In view of the problems in the prior art, the purpose of the present invention is to provide a non-woven fabric edge material recovery machine and a control system thereof, which can not only be used for rolling narrower fabric strips to avoid material waste, but can also be suitable for higher-speed slitting machines; in addition, the edge materials can be rolled separately to improve the efficiency of packaging and sorting.

[0006] In order to achieve the above object, the technical solution of the present invention is:

[0007] A nonwoven fabric edge material recycling machine is designed, comprising a guiding mechanism, a circulating arrangement mechanism, a core shaft, and a driving mechanism for driving the core shaft to rotate. The edge materials conveyed by the slitting machine are sequentially wound around the core shaft through the guiding mechanism and the circulating arrangement mechanism, wherein:

[0008] The guiding mechanism is used to guide the edge material to change direction;

[0009] The cyclic arrangement mechanism is used to receive the edge material after the self-guiding mechanism changes direction, and drive the edge material to swing back and forth along the axial direction of the core shaft;

[0010] The driving mechanism includes an adjusting part, a knurling roller and a first driving part for driving the knurling roller to rotate. The edge material is clamped between the knurling roller and the core shaft and the rotational force of the knurling roller is transmitted to the driven roller side through friction. The adjusting part is used to adjust the distance between the knurling roller and the core shaft.

[0011] Furthermore, it also includes a workbench, which is provided with a bracket for installing the mandrel, and the mandrel and the bracket are detachably connected, wherein the adjustment part drives the bracket away from or close to the knurling roller, thereby driving the mandrel to move synchronously.

[0012] Furthermore, the adjustment part includes a telescopic device, the bracket is connected to the workbench through a slide rail, the telescopic device drives the bracket to move horizontally, and the axes of the core shaft and the knurling roller are in the same horizontal plane.

[0013] Furthermore, the bracket is provided with opening grooves which are respectively used to accommodate two ends of the core shaft and open upward.

[0014] Furthermore, the telescopic device is a pneumatic cylinder, and the pneumatic cylinder is connected to a gas source providing compressed gas through a solenoid valve.

[0015] Furthermore, the first driving part comprises a servo motor, the knurling roller is hinged to the workbench, and the servo motor is connected to the knurling roller via a transmission mechanism.

[0016] Furthermore, the circulating arrangement mechanism includes a U-shaped plate and a second driving part that drives the U-shaped plate to move axially along the knurled roller, a pair of parallel fixed rollers are provided in the U-shaped plate, parallel cloth guide rollers are provided between the fixed rollers, and vertical slide grooves are symmetrically opened on the side walls of the U-shaped plate, a slider connected to the cloth guide roller is clamped in the slide groove, and the slider and the slide groove are slidably matched.

[0017] Furthermore, the second driving part includes a ball screw parallel to the knurled roller and a stepping motor driving the ball screw to rotate, the U-shaped plate is connected to a nut installed on the ball screw, and the U-shaped plate is connected to the workbench through a slide rail.

[0018] Furthermore, the guiding mechanism comprises a guiding ring and a guiding roller respectively arranged at the lower end and the upper end of the workbench, the guiding roller is hinged to the workbench through a bearing seat, and the guiding roller and the knurling roller are parallel.

[0019] In addition, a control system for a nonwoven fabric edge material recovery machine includes:

[0020] A controller is electrically connected to the nonwoven fabric edge material recovery machine and is used to obtain a speed signal of the winding main roller of the slitting machine and issue an instruction to the first driving unit according to the speed signal so that the speed of the core shaft matches the speed of the winding main roller;

[0021] A first proximity switch, used for obtaining a first position signal of the limit position of the mandrel when the distance between the mandrel and the knurling roller is maximum, and transmitting the first position signal to the controller;

[0022] The controller receives the first position signal and sends a command to the first driving unit to control the first driving unit to stop the action;

[0023] A pair of second proximity switches, used to obtain second position signals of the extreme positions at both ends of the moving direction of the U-shaped plate, and transmit them to the controller, and the controller sends instructions to the second driving part according to the second position signals to switch the rotation direction of the ball screw;

[0024] The displacement sensor is used to obtain the distance signal between the slider and the bottom of the slide groove and transmit it to the controller. Then the controller sends instructions to the first drive unit and the second drive unit according to the distance signal to increase / decrease the rotation speed of the core shaft, and make the rotation speed of the ball screw change rapidly in a positive correlation with the rotation speed of the core shaft.

[0025] The beneficial technical effects of the present invention are:

[0026] Compared with the prior art, the non-woven fabric edge material recovery machine and its control system provided by the present invention have unique structures. The waste edge materials cut off by the slitting machine are evenly wound on the core shaft of the edge material recovery machine by friction winding to complete the winding; and by cooperating with the circulating arrangement mechanism, the edge collapse is prevented and the normal operation of the slitting machine is not affected, so that the width of the waste edge materials can be relatively narrow, thereby reducing the waste of raw materials, and the waste edge materials wound into rolls can be recycled and reused to increase profits.

[0027] In addition, the scrap material recovery machine is provided with an independent first driving unit to drive the knurling roller, and then the winding speed of the core shaft can be adjusted to be consistent with the speed of the slitting machine, and can be used for high-speed winding; and the waste scrap material generated by a roll of cloth can fill up an entire core shaft, so that the scrap material recovery machine and the slitting machine can roll up and down at the same time, avoiding delays in production time and effectively improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Attached Figure 1 The present invention is a structural schematic diagram of a nonwoven fabric edge material recycling machine.

[0030] Attached Figure 2 For attachment Figure 1 Schematic diagram of the local enlarged structure.

[0031] Attached Figure 3 The present invention is a schematic diagram of the main structure of a nonwoven fabric edge material recycling machine.

[0032] Attached Figure 4 It is a right view structural schematic diagram of a nonwoven fabric edge material recycling machine.

[0033] Attached Figure 5 The figure is a working principle diagram of a control system of a nonwoven fabric edge material recovery machine.

[0034] In the figure: 1. servo motor, 2. workbench, 3. first proximity switch, 4. telescopic device, 5. mandrel;

[0035] 6. Open slot, 7. Knurled roller, 8. Stepper motor, 9. Fixed roller, 10. Fabric guide roller;

[0036] 11. slideway, 12. slider, 13. ball screw, 14. guide roller, 15. guide ring;

[0037] 16. Displacement sensor, 17. Second proximity switch. DETAILED DESCRIPTION

[0038] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Example

[0039] like Figures 1 to 4 As shown, as a preferred embodiment of the present invention, a nonwoven fabric edge material recycling machine includes a guiding mechanism, a circulating arrangement mechanism, a core shaft 5, and a driving mechanism for driving the core shaft 5 to rotate. The edge material transported from the slitting machine is sequentially wound around the core shaft 5 through the guiding mechanism and the circulating arrangement mechanism, that is, the edge material is finally wound around the core shaft 5, wherein:

[0040] The guiding mechanism is used to guide the edge material to change direction, that is, after the edge material passes through the guiding mechanism, the extension direction of the edge material is changed so as to facilitate the edge material to be introduced into the following circulation arrangement mechanism;

[0041] The circular arrangement mechanism is used to receive the edge material after the self-guiding mechanism changes direction, and drive the edge material to swing back and forth along the axial direction of the mandrel 5, so that the edge material is evenly wound around the mandrel 5 along the axial direction of the mandrel 5, and finally the edge material is wrapped around the circumferential surface of the mandrel 5, effectively preventing the edge of the edge material from collapsing;

[0042] The driving mechanism includes an adjusting portion, a knurled roller 7 and a first driving portion for driving the knurled roller 7 to rotate. The edge material is clamped between the knurled roller 7 and the core shaft 5, and the rotational force of the knurled roller 7 is transmitted to the driven roller side through friction, that is, the core shaft 5 is driven to rotate by the knurled roller 7, and then the edge material is wound around the core shaft 5, and the adjusting portion is used to adjust the distance between the knurled roller 7 and the core shaft 5 to control the thickness of the edge material wound around the core shaft 5, and to keep the core shaft 5 in real-time contact with the knurled roller 7 through the edge material, so as to drive the core shaft 5 to rotate by transmitting friction.

[0043] When the non-woven fabric edge material recycling machine provided by the above invention is used, the waste edge material cut off by the slitting machine is evenly wound on the core shaft 5 of the edge material recycling machine by friction winding to complete the winding; and by cooperating with the circulating arrangement mechanism, the edge collapse is prevented and the normal operation of the slitting machine is avoided, so that the width of the waste edge material can be relatively narrow, thereby reducing the waste of raw materials, and the waste edge material wound into a roll can be recycled and reused to increase profits.

[0044] In addition, the scrap material recovery machine is provided with an independent first driving unit to drive the knurling roller 7, and then the winding speed of the core shaft 5 can be adjusted to be consistent with the speed of the slitting machine, and can be used for high-speed winding; and the waste scrap material generated by a roll of cloth can fill up an entire core shaft 5, so that the scrap material recovery machine and the slitting machine can roll up and down at the same time, avoiding delays in production time and effectively improving production efficiency.

[0045] On the basis of the above embodiment, a workbench 2 is additionally provided. The workbench 2 is provided with a bracket for mounting the mandrel 5. The mandrel 5 and the bracket are detachably connected to facilitate taking and placing the mandrel 5 and replacement. The adjustment portion drives the bracket away from or close to the knurled roller 7, thereby driving the mandrel 5 to move synchronously, that is, the mandrel 5 is driven away from or close to the knurled roller 7 by the bracket to adjust the distance between the two.

[0046] On the basis of the above embodiment, the adjustment part includes a telescopic device 4, and the bracket is connected to the workbench 2 through a slide rail. The telescopic device 4 drives the bracket to move horizontally, and the slide rail is used to enhance the stability of the bracket during the movement, thereby ensuring the stability of the core shaft 5, and the axes of the core shaft 5 and the knurled roller 7 are in the same horizontal plane. In actual installation, the slide rail extends toward the knurled roller 7, and then the telescopic device 4 drives the bracket to move horizontally through a telescopic action, thereby moving away from or close to the knurled roller 7.

[0047] In actual production, the bracket is provided with open grooves 6 for accommodating the two ends of the core shaft 5 and opening upwards, that is, the bracket is provided with a pair of open grooves 6 for accommodating the two ends of the core shaft 5, and the core shaft 5 can rotate circumferentially in the open grooves 6, and the core shaft 5 can be taken out by directly lifting or lowering, which is convenient and quick; more specifically, the telescopic device 4 is a pneumatic cylinder, which realizes the telescopic drive bracket movement. This pneumatic cylinder controls the input pneumatic cylinder pressure (constant pressure, relatively small pressure) through an electromagnetic valve to ensure that as the roll diameter on the core shaft 5 increases, the force between the core shaft and the knurled roller is sufficient to drive the pneumatic cylinder to contract. At the critical point where the pneumatic cylinder stroke is greater than the working stroke, there is a first proximity switch 3, which is used to detect critical conditions to control the start and stop of the machine, wherein the attached Figure 3 That is, it shows the working state of the mandrel at the extreme position.

[0048] On the basis of the above embodiment, the first driving part includes a servo motor 1, power: 2.2kW, the knurling roller 7 is hinged to the workbench 2, the servo motor 1 is connected to the knurling roller 7 through a transmission mechanism, and the servo motor 1 can control the speed and position accuracy very accurately, and can convert the voltage signal into torque and speed to drive the control object. The rotor speed of the servo motor 1 is controlled by the input signal and can respond quickly. In the automatic control system, it is used as an actuator and has the characteristics of small electromechanical time constant and high linearity. The received electrical signal can be converted into angular displacement or angular velocity output on the motor shaft, and then the servo motor 1 can be used to conveniently adjust the speed of the mandrel 5.

[0049] In the above embodiment, the circulating arrangement mechanism includes a U-shaped plate and a second driving part that drives the U-shaped plate to move axially along the knurled roller 7. It should be noted that the edge material passes through the groove of the U-shaped plate, and a pair of parallel fixed rollers 9 are provided in the U-shaped plate, and the two ends of the fixed rollers 9 are respectively hinged to the side walls of the U-shaped plate, and parallel cloth guide rollers 10 are provided between the fixed rollers 9, and the side walls of the U-shaped plate are symmetrically provided with vertical slide grooves 11, and a slider 12 connected to the cloth guide roller 10 is clamped in the slide groove 11, and the slider 12 and the slide groove 11 are slidably matched, wherein the cloth guide roller 10 and the slider 12 are hinged. For this structure, the specific installation method of the edge material is that the edge material bypasses the upper ends of a pair of fixed rollers 9 in turn, and the cloth guide roller 10 is located at the lower end of the edge material, and then under the action of the gravity of the cloth guide roller 10, the part of the edge material located between the fixed rollers 9 is pressed down, and the tension of the edge material is adjusted, so that the edge material is evenly and tightly arranged on the core shaft 5 of the edge material recovery machine.

[0050] It should be noted that a slot is provided on the side of the slider 12 . After being assembled in the slide groove 11 , the side wall of the slide groove 11 is located in the slot, thereby preventing the slider 12 from falling off.

[0051] On the basis of the above embodiment, the second driving unit includes a ball screw 13 parallel to the knurled roller 7 and a stepper motor 8 driving the ball screw 13 to rotate. The U-shaped plate is connected to a nut installed on the ball screw 13, and the U-shaped plate is connected to the workbench 2 through a slide rail. The slide rail extends along the length direction of the ball screw 13, that is, the ball screw 13 is driven to rotate by the stepper motor 8 to drive the U-shaped plate to swing back and forth.

[0052] More specifically, the guiding mechanism includes a guiding ring 15 and a guiding roller 14 respectively arranged at the lower end and the upper end of the workbench 2. The guiding roller 14 is hinged to the workbench 2 through a bearing seat, and the guiding roller 14 is parallel to the knurling roller 7, that is, the edge material conveyed from the slitting machine passes through the guiding ring 15, bypasses the guiding roller 14 and then enters the circulating arrangement mechanism.

[0053] In addition, Figure 5 As shown, a control system of a nonwoven fabric edge material recovery machine realizes automatic control, including:

[0054] The controller, which may be a PLC controller, is electrically connected to the nonwoven fabric edge material recovery machine and is used to obtain the speed signal of the winding main roller of the slitting machine, and send instructions to the first driving unit according to the speed signal to match the speed of the core shaft 5 with the speed of the winding main roller;

[0055] The first proximity switch 3 (i.e., a photoelectric switch) is used to obtain a first position signal of the limit position of the mandrel 5 when the distance between the mandrel 5 and the knurled roller 7 is the largest, and transmit the first position signal to the controller. In this embodiment, the first proximity switch 3 is arranged on the workbench 2 to be used in conjunction with the bracket, that is, when the bracket moves away from the knurled roller 7 and approaches the first proximity switch 3, a first position signal is generated, thereby limiting the mandrel 5 to limit the maximum roll diameter of the cloth roll;

[0056] The controller receives the first position signal and sends a command to the first driving unit to control the first driving unit to stop the action, which means that the bracket has reached the limit position away from the knurling roller 7, that is, the distance between the mandrel 5 and the knurling roller 7 is the maximum. Then, when the speed is 0, the staff is notified to unload the roll. Before unloading, the program refuses to start the machine again.

[0057] A pair of second proximity switches 17 (also photoelectric switches) are used to obtain the second position signals of the extreme positions at both ends of the moving direction of the U-shaped plate and transmit them to the controller. The controller sends instructions to the second drive unit according to the second position signals to switch the rotation direction of the ball screw 13 to form a reciprocating swing. Specifically, when the ball screw 13 encounters the limit at both ends, the controller will sense this signal and quickly control the stepper motor 8 to decelerate, stop, reverse, and quickly start to the control speed before deceleration. The whole process will be completed within 50-600ms based on the current speed of the stepper motor 8;

[0058] A pair of second proximity switches 17 are respectively disposed at two ends of the ball screw 13 , thereby realizing the travel limit of the U-shaped plate on the ball screw 13 .

[0059] The displacement sensor 16 is used to obtain the distance signal between the slider 12 and the bottom of the slide groove 11, and transmit it to the controller, and then the controller sends instructions to the first drive unit and the second drive unit according to the distance signal to increase / decrease the speed of the core shaft 5, and make the speed of the ball screw 13 change rapidly in a positive correlation with the speed of the core shaft 5, and the specific principle is:

[0060] The controller receives the speed signal (m / min) from the winding main roller of the slitting machine. This signal is an analog signal: 0-10VDC, and controls the servo motor 1 of the edge material recovery machine to match the motor speed of the winding main roller of the slitting machine. Matching mark: the feedback value of the linear displacement sensor used to indicate the tension change is stable. The program algorithm will automatically, in real time and quickly adjust the motor speed of the winding roller of the trimming recovery machine based on the motor speed feedback of the winding main roller of the slitting machine and the position feedback of the displacement sensor:

[0061] If the speed of the main rewinding roller of the slitting machine slows down, or the position of the displacement sensor rises, the program controls the speed of the rewinding roller motor of the trimming and recycling machine to slow down;

[0062] If the speed of the main rewinding roller of the slitting machine increases, or the position of the displacement sensor decreases, the servo motor 1 of the program-controlled edge material recovery machine will increase in speed;

[0063] The controller program quickly corrects the tension fluctuation caused by the speed of the winding main roller of the slitting machine or the position fluctuation of the displacement sensor with a scanning control cycle of every 5-7ms;

[0064] In this embodiment, the maximum winding speed of the mandrel 5 of the edge material recovery machine can reach 400m / min.

[0065] The displacement sensor is fixed to the side wall of the U-shaped plate, and the slider 12 is connected to an inverted L-shaped plate that cooperates with the displacement sensor. The L-shaped plate rises and falls with the slider 12 to move away from or close to the probe of the position sensor, thereby achieving measurement.

[0066] In actual production, the working process of the entire equipment is:

[0067] Before the edge material recycling machine is officially started, the basic tension of the edge material needs to be established. At this time, press the "jog" button on the touch screen, the servo motor 1 of the trimming recycling roller and the stepper motor 8 of the ball screw will run stably at the set speed. When the tension is established (the displacement sensor is stable at a certain point, such as 30mm), the trimming collection machine will automatically stop and wait for the operation signal of the winding main roller of the slitting machine;

[0068] After the tension is established, press the "full machine start" button on the edge material recycling machine console. The program will automatically adjust the speed of the winding servo motor 1, the ball screw 13, and the stepper motor 8 based on the front-end vehicle speed and the position feedback of the displacement sensor. The whole process does not require human supervision.

[0069] When the first proximity switch 3 detects that the current roll diameter (the distance between the mandrel 5 and the knurled roller 7) is close to 800 mm, in order to ensure the safety of the equipment, the trimming and collecting machine will automatically reduce the speed to 0 and notify the staff to unload the cloth. Before the cloth is unloaded, the program refuses to start the machine again;

[0070] In any case, you can press the "full machine stop" button on the console, and the program will automatically control the winding roller servo motor 1, ball screw 13 and stepper motor 8 to stop in a controlled manner, and the tension remains stable during the entire stop process.

[0071] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0072] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0073] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those 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 will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A nonwoven fabric edge material recycling machine, characterized in that: It includes a guiding mechanism, a circulating arrangement mechanism, a mandrel, and a driving mechanism for driving the mandrel to rotate. The edge material conveyed by the slitting machine is wound around the mandrel through the guiding mechanism and the circulating arrangement mechanism in sequence, wherein: The guiding mechanism is used to guide the edge material to change direction; The cyclic arrangement mechanism is used to receive the edge material after the self-guiding mechanism changes direction, and drive the edge material to swing back and forth along the axial direction of the core shaft; The driving mechanism comprises an adjusting part, a knurling roller and a first driving part for driving the knurling roller to rotate, the edge material is clamped between the knurling roller and the mandrel and the rotational force of the knurling roller is transmitted to the mandrel side by friction, and the adjusting part is used to adjust the distance between the knurling roller and the mandrel; The circulating arrangement mechanism comprises a U-shaped plate and a second driving part driving the U-shaped plate to move along the axial direction of the knurled roller. A pair of parallel fixed rollers are arranged in the U-shaped plate, and a parallel cloth guide roller is arranged between the fixed rollers. The side wall of the U-shaped plate is symmetrically provided with vertical slide grooves, and a slider connected to the cloth guide roller is clamped in the slide groove, and the slider and the slide groove are slidably matched; a clamping groove is arranged on the side of the slider, and after being assembled in the slide groove, the side wall of the slide groove is located in the clamping groove The second driving part includes a ball screw parallel to the knurled roller and a stepping motor driving the ball screw to rotate, the U-shaped plate is connected to a nut installed on the ball screw, and the U-shaped plate is connected to the workbench through a slide rail; The guiding mechanism comprises a guiding ring and a guiding roller respectively arranged at the lower end and the upper end of the workbench, the guiding roller is hinged to the workbench through a bearing seat, and the guiding roller is parallel to the knurling roller; Also includes: A controller is electrically connected to the nonwoven fabric edge material recovery machine and is used to obtain a speed signal of the winding main roller of the slitting machine and issue an instruction to the first driving unit according to the speed signal so that the speed of the core shaft matches the speed of the winding main roller; A first proximity switch, used for obtaining a first position signal of the limit position of the mandrel when the distance between the mandrel and the knurling roller is maximum, and transmitting the first position signal to the controller; The controller receives the first position signal and sends a command to the first driving unit to control the first driving unit to stop the action; A pair of second proximity switches, used to obtain second position signals of the extreme positions at both ends of the moving direction of the U-shaped plate, and transmit them to the controller, and the controller sends instructions to the second driving part according to the second position signals to switch the rotation direction of the ball screw; The displacement sensor is used to obtain the distance signal between the slider and the bottom of the slide groove and transmit it to the controller. Then the controller sends instructions to the first drive unit and the second drive unit according to the distance signal to increase / decrease the rotation speed of the core shaft, and make the rotation speed of the ball screw change rapidly in a positive correlation with the rotation speed of the core shaft.

2. The nonwoven fabric edge material recycling machine according to claim 1, characterized in that: It also includes a workbench, which is provided with a bracket for installing the mandrel, and the mandrel and the bracket are detachably connected, wherein the adjustment part drives the bracket away from or close to the knurling roller, thereby driving the mandrel to move synchronously.

3. The nonwoven fabric edge material recycling machine according to claim 2, characterized in that: The adjusting part comprises a telescopic device, the bracket is connected to the workbench through a slide rail, the telescopic device drives the bracket to move horizontally, and the axes of the mandrel and the knurling roller are in the same horizontal plane.

4. The nonwoven fabric edge material recycling machine according to claim 3, characterized in that: The bracket is provided with opening grooves which are respectively used to accommodate two ends of the core shaft and open upward.

5. The nonwoven fabric edge material recycling machine according to claim 3, characterized in that: The telescopic device is a pneumatic cylinder, and the pneumatic cylinder is connected to a gas source providing compressed gas through a solenoid valve.

6. The nonwoven fabric edge material recycling machine according to claim 3, characterized in that: The first driving part comprises a servo motor, the knurling roller is hinged to the workbench, and the servo motor is connected to the knurling roller via a transmission mechanism.

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