Automatic cloth end drawing device for cloth inspection machine

Abstract

The application provides an automatic cloth end drawing device for a cloth inspecting machine, and relates to the technical field of cloth end drawing of a cloth inspecting machine. The automatic cloth end drawing device for the cloth inspecting machine comprises a cloth inspecting mechanism and further comprises a plurality of guide fixed rails supported on the outer side wall of the cloth inspecting mechanism through a plurality of groups of suspension supports and arranged across the outer periphery of each cloth guiding component of the cloth inspecting mechanism to constrain the cloth running path and guide the cloth to be conveyed along a predetermined extension direction, wherein the guide fixed rails are arranged in a non-continuous segmented mode and are discontinuously arranged at the corresponding installation areas of rotary components such as tension rollers. The application realizes the selective docking and power switching of the cloth end clamping adjusting assembly and the plurality of groups of driving devices by relying on the in-place detection of the interface sensor and the automatic locking and unlocking cooperation of the electromagnetic bolt. Meanwhile, the guide fixed rails in the segmented non-continuous structure can not only avoid the motion interference of the rotary components such as the tension rollers, but also can support the smooth cross-station sliding of the driving devices.

Description

Technical Field

[0001] This invention relates to the field of fabric end stretching technology for fabric inspection machines, specifically to an automatic fabric end stretching device for fabric inspection machines. Background Technology

[0002] Fabric inspection machines are core equipment used in the textile finishing process for detecting defects in the appearance of fabrics. They can comprehensively inspect for defects such as holes, color differences, skipped yarns, and stains on the surface of rolled fabrics. They are key devices for controlling the quality of finished fabrics. Traditionally, fabric inspection machines use a manual fabric loading mode when changing rolls. The operation process is as follows: the operator first pulls out the fabric end from the unwinding roller, passes it through multiple tension adjusting rollers inside the equipment, lays the fabric end flat on the visual inspection platform, and then continuously pulls the fabric end across each guide component. Finally, the fabric end is fixed and wound onto the take-up roller. Only after the feeding and guiding process is completed can the continuous fabric inspection operation be started.

[0003] The fabric feeding path is composed of multiple layers of guide rollers, tension rollers, and other components. These rollers create multiple obstructions, making it easy for workers to cause the fabric to shift left and right or become skewed when they manually pull the fabric. This is especially true for wider fabrics, where it is difficult for a single person to simultaneously control the feeding of both sides of the fabric. The problem of fabric skew is even more pronounced, requiring two people to work together to complete the feeding operation. However, the amount of tension during the two-person pulling process depends entirely on the operator's experience. Excessive force will stretch the elasticity and cause permanent deformation of thin fabrics, while insufficient force will cause the fabric to pile up and form wrinkles. The fabric texture changes in the areas where stretching and wrinkling occur, making it impossible for visual inspection equipment to accurately identify defects. This directly reduces the accuracy of fabric quality inspection and creates the risk of missed inspections.

[0004] If the fabric drawing process is to be completed by relying on automated equipment, the traction mechanism needs to drive the fabric head to continuously circle multiple sets of guide rollers and tension rollers. The rollers inside the equipment are arranged in a staggered manner and the adjustment stroke is limited. If a fixed guide rail is used to constrain the traction mechanism to walk along a preset path, the guide rail structure is very likely to cause spatial interference with the tension rollers and guide rollers. This not only limits the up-and-down floating adjustment range of the tension rollers, but also hinders the normal rotation of the rollers. It is impossible to achieve micro-tension adaptive control during the fabric drawing process, which seriously affects the smoothness of the drawn fabric and the protective effect of the fabric.

[0005] Based on the above viewpoints, those skilled in the art have proposed an automatic stretching and pulling device for fabric inspection machines that uses a discontinuous guide rail to pull the fabric head. Summary of the Invention

[0006] Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an automatic fabric end pulling device for a fabric inspection machine. Relying on the positioning detection of an interface sensor and the automatic locking and unlocking of an electromagnetic pin, it achieves selective docking and power switching between the fabric end clamping and adjusting components and multiple sets of drive devices. Simultaneously, the segmented, discontinuous guide rail structure avoids motion interference from rotating components such as tension rollers and supports the smooth sliding of the drive equipment across workstations. Technical solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: an automatic fabric pulling device for a fabric inspection machine, comprising a fabric inspection mechanism, and further comprising: Several guide rails are supported on the outer wall of the fabric inspection mechanism by multiple sets of suspension brackets and span across the outer periphery of each fabric guiding component of the fabric inspection mechanism. They are used to constrain the fabric travel path and guide the fabric to be conveyed along a predetermined extension direction. The guide rails are arranged in a non-continuous segmented manner and are disconnected at the corresponding installation areas of rotating components such as tension rollers to avoid interference with the rotation of the rollers. Fabric end clamping and adjusting assembly is used to clamp and fix the end of the fabric wound on the unwinding roller of the fabric inspection mechanism; Multiple sets of drive devices are assembled on several guide rails and slide along the outer wall of the guide rails by means of the power devices on the drive devices. The transfer coupling mechanism includes transfer components disposed on both sides of the fabric head clamping and adjusting assembly and coupling components fixedly mounted on multiple sets of driving devices. The transfer components are selectively locked with different sets of coupling components, and the transfer of the fabric head clamping and adjusting assembly between different driving devices is completed by the cooperation of the two.

[0008] Preferably, the transfer assembly includes a transfer frame, and interface slots are provided on both the left and right sides of the transfer frame; an interface sensor is mounted on the outer wall of the transfer frame, and the interface sensor is used to detect whether any components are inserted or removed inside the interface slot. Each of the aforementioned interface slots is equipped with an electromagnetic pin on its outer side, which is used to lock the component that extends into the interface slot; the outer wall of the coupling member is provided with a coupling pin hole that matches the pin shaft of the electromagnetic pin.

[0009] Preferably, the driving device includes a plurality of pulleys embedded in the guide rail, and an electronic control device for driving the entire driving device to move along the guide rail. The electronic control device is equipped with a motor and gears, and the contact surface of the guide rail that meshes with the gears is formed with a toothed groove structure that meshes with the gears.

[0010] Preferably, the fabric end clamping and adjusting assembly includes: The fabric clamping bracket is formed by welding multiple sheet metal parts, with a cavity reserved in the middle for the fabric to pass through; The magnetic recess is connected and assembled to the inner wall of the fabric clamping bracket via an elastic component; A wide electromagnet is fixed inside the fabric clamping bracket. When the wide electromagnet is energized, it can attract magnetic blocks to adhere to itself, thereby clamping the fabric that passes through the cavity.

[0011] Preferably, the inner side of the magnetic recess is formed with a groove serving as an assembly reference, and an amplitude adjustment bracket is assembled inside the groove; the amplitude adjustment bracket includes: Two sets of limiting rings are fixedly assembled inside the groove; Two sets of limit frames are slidably assembled in the limit ring. The limit frames assembled in the same limit ring are connected by springs to achieve elastic reset. An amplitude adjustment rod is mounted on the same side of the corresponding limit frame via a torsion spring hinge. Each of the amplitude adjustment rods is also equipped with a contact pad that contacts the fabric end.

[0012] Preferably, a plurality of skew detection sensors are mounted on the lower side of both amplitude adjustment rods. The skew detection sensors are used to monitor the clamping and fixing posture of the fabric on the amplitude adjustment rods in real time and identify the skewed and offset state of the fabric.

[0013] Preferably, a drive structure is also assembled between the two amplitude adjustment rods, the drive structure comprising: Select the contact rod, which has several protruding keys on its outer peripheral sidewall. The protruding keys are arranged in a stepped height and can selectively engage with the keyway opened inside the amplitude adjustment rod, thereby completing the selective driving of one or more amplitude adjustment rods. An amplitude modulation motor is fixedly mounted on the outer wall of the fabric clamping bracket, and the output end of the amplitude modulation motor forms a limiting sliding fit with the selection contact rod. The lower part of the selection contact rod is rotatably equipped with an armature; an independent electromagnet is fixed on the lower side wall of the cloth clamping bracket, and the independent electromagnet can attract and drive the armature to move towards the side of the independent electromagnet after being energized.

[0014] Preferably, the outer wall of the hand-over assembly is also equipped with an adjustment motor for driving the fabric head clamping adjustment assembly to rotate, thereby adjusting the orientation angle of the fabric head.

[0015] This invention provides an automatic fabric stretching head device for a fabric inspection machine. It possesses the following technical features and beneficial effects: 1. By assembling an amplitude-adjusting bracket with an angled structure inside the magnetic recess, and using a linkage mechanism where a wide-range electromagnet magnetically attracts and moves the magnetic recess, the two normally angled amplitude-adjusting rods are automatically extended to both sides under pressure. A uniform lateral tensile force is applied to the clamped fabric end through the contact pad. This structure eliminates the need for an additional independent tension drive component, and relies on the clamping action to simultaneously complete the fabric flattening operation. This effectively eliminates problems such as accumulation, wrinkling, and curling that easily occur during fabric feeding, preventing false or missed inspections caused by fabric wrinkles from the source, and significantly improving the initial flatness of the fabric and the accuracy of fabric inspection.

[0016] 2. By using independent electromagnets for multi-stage adsorption control to select the descent height of the contact rod, selective engagement of the convex key with the double-sided or single-sided amplitude adjustment rods can be achieved. This allows for targeted solutions to different fault conditions such as overall fabric skewing, left-side skewing, and right-side skewing, enabling overall angle correction or single-sided local correction. 3. Relying on the positioning detection of interface sensors and the automatic locking and unlocking of electromagnetic pins, selective docking and power switching between the fabric end clamping and adjusting components and multiple sets of drive equipment are achieved. At the same time, the segmented non-continuous structure of the guide rail not only avoids the motion interference of rotating components such as tension rollers, but also supports the smooth sliding of the drive equipment across workstations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the rear structure of the present invention; Figure 3 This is a partial schematic diagram of the present invention; Figure 4 This is a schematic diagram of the cooperative structure of the driving device, the handover component, and the coupling component in this invention; Figure 5 This is a schematic diagram of the cooperative structure of the driving device, the handover component, and the coupling component on both sides of the obstacle in this invention; Figure 6 This is a schematic diagram of the handover component in this invention; Figure 7 This is a cross-sectional view of the fabric end clamping and adjusting assembly in this invention; Figure 8 This is an exploded view of the fabric end clamping and adjusting assembly in this invention; Figure 9 This is a schematic diagram of the cooperative structure of the driving structure, amplitude modulation bracket and electromagnet in this invention; Figure 10 This is an exploded view of the driving structure, amplitude modulation bracket, and electromagnet in this invention; Figure 11 This is a schematic diagram of the amplitude adjustment lever in this invention.

[0018] The components include: 1. Fabric inspection mechanism; 2. Guide rail; 3. Suspension bracket; 4. Drive device; 5. Transfer assembly; 6. Coupler; 7. Fabric end clamping and adjusting assembly. 51. Transfer frame; 52. Interface slot; 53. Interface sensor; 54. Electromagnetic pin; 55. Adjustment motor; 61. Coupling pin hole; 71. Fabric end clamping bracket; 72. Amplitude adjustment bracket; 73. Electromagnet; 74. Drive structure; 75. Magnetic recess; 76. Wide-width electromagnet; 721. Amplitude adjustment lever; 722. Limiting bracket; 723. Limiting ring; 724. Skew detection sensor; 725. Contact pad; 741. Amplitude modulation motor; 742. Selector contact rod; 743. Armature. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example, refer to Figures 1 to 5 As shown, this embodiment of the invention provides an automatic fabric extension and pulling device for a fabric inspection machine. The device includes a fabric inspection mechanism 1 and several guide rails 2, supported by multiple sets of suspension brackets 3 on the outer wall of the fabric inspection mechanism 1 and spanning the outer periphery of each fabric guiding component of the fabric inspection mechanism 1. These rails constrain the fabric's travel path and guide the fabric to be conveyed along a predetermined extension direction. The guide rails 2 are arranged in a discontinuous, segmented manner, interrupted at the corresponding installation areas of rotating components such as tension rollers to avoid interference with the roller's rotation. The fabric end clamping and adjusting... The section component 7 is used to clamp and fix the end of the fabric wound on the unwinding roller of the fabric inspection mechanism 1; multiple sets of drive devices 4 are matched and assembled on several guide rails 2 and slide along the outer wall of the guide rails 2 by the power device on the drive device 4; the transfer coupling mechanism includes transfer components 5 respectively disposed on both sides of the fabric end clamping and adjusting component 7 and coupling parts 6 fixed on the multiple sets of drive devices 4, wherein the transfer components 5 and different sets of coupling parts 6 are selectively locked and connected, and the transfer of the fabric end clamping and adjusting component 7 between different drive devices 4 is completed by the cooperation of the two.

[0021] The equipment as a whole relies on the fabric inspection mechanism 1 to complete the fabric inspection and feeding operation. Multiple sections of non-continuously laid guide rails 2 span the outside of all the fabric guiding components of the fabric inspection mechanism 1. The rails are disconnected at the corresponding positions of the tension rollers and other rotating rollers to prevent the rails from interfering with the rotation of the rollers to adjust the tension. Multiple sets of drive devices 4 are assembled on the guide rails 2 and can slide along the outer wall of the rails. The fabric end clamping and adjusting component 7 pre-clamps and fixes the end of the fabric output from the unwinding roller. The fabric end clamping and adjusting component 7 is installed on both sides of the fabric end clamping and adjusting component 7. Each set of drive devices 4 is fixed with a coupling component 6. When the equipment is running, the coupling component 5 can selectively lock with the coupling component 6 on any set of drive devices 4. When it is necessary to change the operating position of the fabric end clamping and adjusting component 7, the coupling component 5 is released from the current coupling component 6 and then locked with the coupling component 6 of the target drive device 4. The drive device 4 drives the fabric end clamping and adjusting component 7 to move along the guide rails 2, so as to realize the automatic traction and conveying of the fabric end inside the fabric inspection mechanism 1.

[0022] In some embodiments, refer to Figure 4 and Figure 5 As shown, the transfer assembly 5 includes a transfer frame 51, with interface slots 52 on both the left and right sides of the transfer frame 51; an interface sensor 53 is mounted on the outer wall of the transfer frame 51, which is used to detect whether any components are inserted or removed inside the interface slots 52; an electromagnetic pin 54 is mounted on the outer side of each interface slot 52, which is used to lock the components that extend into the interface slots 52; and a coupling pin hole 61 is opened on the outer wall of the coupling member 6, which is adapted to the pin shaft of the electromagnetic pin 54.

[0023] The main body of the transfer component 5 is the transfer frame 51. Interface slots 52 are opened at both ends of the transfer frame 51. The interface sensor 53 mounted on the outer wall of the transfer frame 51 continuously monitors the internal space of the interface slot 52 in real time. When the drive device 4 moves to the side of the transfer frame 51 with the coupling component 6, the end of the coupling component 6 is inserted into the interface slot 52. The interface sensor 53 detects that a component has been inserted into the slot and outputs a positioning signal. The equipment control system triggers the electromagnetic pins 54 on the outside of each interface slot 52 to extend. The pin shaft of the electromagnetic pin 54 is inserted into the pre-set coupling pin hole 61 on the side wall of the coupling component 6 to complete rigid locking. Meanwhile, the pin shaft of the electromagnetic pin 54 on the other side retracts and exits the coupling pin hole 61. The coupling component 6 can then be separated from the interface slot 52, completing the unlocking and separation action between the cloth clamping adjustment component 7 and the current drive device 4.

[0024] In some embodiments, refer to Figure 3 and Figure 4 As shown, the drive device 4 includes several pulleys embedded in the guide rail 2, and an electronic control device for driving the drive device 4 as a whole to move along the guide rail 2. The electronic control device is equipped with a motor and gears, and the guide rail 2 has a toothed groove structure that meshes with and matches the gears on the contact surface where it engages with the gears.

[0025] The drive device 4 relies on multiple sets of pulleys embedded in the outside of the guide rail 2 to form a sliding support structure. The device has a built-in electronic control device that provides the walking power. The electronic control device includes a drive motor and meshing gears. After the device is started, the motor drives the gears to rotate continuously. The gears mesh with the tooth groove structure formed on the contact surface of the guide rail 2. The driving force is generated by the meshing of the gear teeth. The pulleys slide synchronously along the outer wall of the guide rail 2, driving the entire drive device 4 to slide linearly along the guide rail 2.

[0026] In some embodiments, refer to Figure 7 As shown, the fabric clamping and adjusting assembly 7 includes: a fabric clamping bracket 71, which is formed by welding multiple sheet metal parts, with a cavity reserved in the middle for the fabric to pass through; a magnetic recess 75, which is connected and assembled to the inner wall of the fabric clamping bracket 71 via an elastic component; and a wide electromagnet 76, which is fixed inside the fabric clamping bracket 71. When the wide electromagnet 76 is energized, it can attract the magnetic recess 75 to adhere to itself, thereby clamping the fabric passing through the cavity.

[0027] The fabric end is led out from the unwinding roller and passes through the central cavity of the bracket. The equipment control system outputs a power supply signal to the wide electromagnet 76, which generates a magnetic attraction force, attracting the magnetic recess 75, which is assembled on the inner wall of the bracket and connected by an elastic component, to move towards the wide electromagnet 76. The magnetic recess 75 squeezes the fabric inside the cavity, and clamps the fabric end by relying on the magnetic attraction force and cooperating with the inner wall of the bracket. When it is necessary to loosen the fabric end, the wide electromagnet 76 is de-energized and demagnetized, and the magnetic recess 75 is reset under the elastic force of the matching elastic component, releasing the clamped fabric end and realizing the quick installation and removal of the fabric end.

[0028] In some embodiments, refer to Figures 7 to 10 As shown, the magnetic recess 75 has a groove formed on its inner side as an assembly reference, and an amplitude adjustment bracket 72 is assembled inside the groove. The amplitude adjustment bracket 72 includes: two sets of limiting rings 723, which are fixedly assembled inside the groove; two sets of limiting frames 722, which are slidably assembled in the limiting rings 723, and the limiting frames 722 assembled in the same limiting ring 723 are connected by springs to achieve elastic reset; an amplitude adjustment rod 721, and the limiting frames 722 on the same side are hinged to each other by a torsion spring; and each amplitude adjustment rod 721 is also equipped with a contact pad 725 that contacts the fabric end.

[0029] In this configuration, the two amplitude adjustment rods 721 normally form a preset angle between them, and the contact pads 725 at the ends of the amplitude adjustment rods 721 directly adhere to the end face of the fabric. When the wide electromagnet 76 attracts the magnetic concave block 75 and moves it to the side of the wide electromagnet 76, the magnetic concave block 75 simultaneously drives the overall amplitude adjustment bracket 72 to retract inward. The two amplitude adjustment rods 721, which are arranged at an angle, are driven by the compressive force, which drives the limiting frame 722 to slide and open to both sides along the limiting ring 723. The two amplitude adjustment rods 721 extend outward simultaneously, and with the help of the contact pads 725, a lateral tensile force is applied to the clamped fabric end, which fully flattens the fabric end and effectively eliminates the wrinkles formed by the accumulation of fabric ends. When the wide electromagnet 76 is de-energized and releases the magnetic concave block 75, the limiting frame 722 retracts inward under the reset action of the matching spring, and the two amplitude adjustment rods 721 return to their original angle, releasing the lateral tension on the fabric.

[0030] In some embodiments, refer to Figure 11 As shown, several skew detection sensors 724 are mounted on the lower side of both amplitude adjustment rods 721. The skew detection sensors 724 are used to monitor the clamping and fixing posture of the fabric on the amplitude adjustment rods 721 in real time and identify the skewed and offset state of the fabric.

[0031] Several skew detection sensors 724 are arranged on the lower side of both amplitude adjustment rods 721. When the fabric head is clamped and pulled by the amplitude adjustment rods 721 on both sides, all the skew detection sensors 724 synchronously collect the contact position signal between the fabric and the amplitude adjustment rods 721. If the fabric shifts to the left or right, becomes skewed, or becomes loose on one side, the corresponding position sensor detects the shift of the fabric contact surface and immediately transmits the fabric skew offset signal to the whole machine controller. The controller can link the subsequent amplitude adjustment structure and the transfer mechanism to adjust the clamping angle and traction position of the fabric head, correct the fabric skew problem in advance, and avoid the skewed fabric from entering the fabric inspection process and causing detection errors.

[0032] It should be noted that the skew detection sensor 724 can be an ultrasonic miniature detection sensor or a miniature CCD linear array sensor head.

[0033] In some embodiments, refer to Figure 9 and Figure 10 As shown, a drive structure 74 is also assembled between the two amplitude adjustment rods 721. The drive structure 74 includes: a selection contact rod 742, whose outer peripheral sidewall is provided with several protruding keys, each protruding key being arranged in a stepped height, which can selectively engage with the keyway opened inside the amplitude adjustment rod 721, thereby completing the selective driving of one or more amplitude adjustment rods 721; an amplitude adjustment motor 741, fixedly mounted on the outer sidewall of the fabric head clamping bracket 71, the output end of the amplitude adjustment motor 741 forming a limiting sliding engagement with the selection contact rod 742; wherein, an armature 743 is rotatably mounted on the lower part of the selection contact rod 742; an independent electromagnet 73 is fixedly mounted on the lower sidewall of the fabric head clamping bracket 71, and when the independent electromagnet 73 is energized, it can attract and drive the armature 743 to move towards the side of the independent electromagnet 73.

[0034] When the fabric becomes skewed, the electromagnet 73 is energized and acquires first-order magnetism. At this time, under the attraction of the electromagnet 73, the armature 743 drives the selection contact rod 742 to descend to the first height, so that the keyways on both sides of the selection contact rod 742 are engaged into the keyways of the amplitude adjustment rod 721. Then, the amplitude adjustment motor 741 drives the two amplitude adjustment rods 721 to rotate together according to the skew angle fed back by the skew detection sensor 724, thereby driving the fabric head clamped inside to rotate.

[0035] In another embodiment of the present invention, when the right side of the fabric is skewed, the electromagnet 73 is energized and acquires secondary magnetism. At this time, under the attraction of the electromagnet 73, the armature 743 drives the selection contact rod 742 to descend to the second height, so that the two sides of the selection contact rod 742 are engaged into the keyway of the amplitude adjustment rod 721. Then, the amplitude adjustment motor 741 drives the amplitude adjustment rod 721 on the right side to rotate according to the skew angle fed back by the skew detection sensor 724, thereby driving the fabric end located on the right side to rotate.

[0036] In another embodiment of the present invention, when the left side of the fabric is skewed, the electromagnet 73 is energized and acquires a third-level magnetism. At this time, under the attraction of the electromagnet 73, the armature 743 drives the selector contact rod 742 to descend to the third height, so that the two sides of the selector contact rod 742 are engaged into the keyway of the amplitude adjustment rod 721. Then, the amplitude adjustment motor 741 drives the amplitude adjustment rod 721 on the left side to rotate according to the skew angle fed back by the skew detection sensor 724, thereby driving the fabric end located on the left side to rotate.

[0037] In some embodiments, refer to Figure 6 As shown, the outer wall of the hand-on assembly 5 is also equipped with an adjustment motor 55 for driving the fabric head clamping and adjusting assembly 7 to rotate and thereby adjusting the orientation angle of the fabric head.

[0038] Working Principle: This invention relies on the fabric inspection mechanism 1 as the basic operating carrier, and uses the segmented, discontinuously laid guide rail 2 as the walking guide reference. It is combined with multiple sets of autonomously sliding drive devices 4 and fabric end clamping and adjusting components 7 that can be transferred across workstations to form an automated fabric end traction, correction, and flattening operation system. When the equipment is working, the fabric end clamping and adjusting components 7 first complete the initial fabric end clamping. The fabric end passes through the central cavity of the fabric end clamping bracket 71. When the wide electromagnet 76 is energized, it generates magnetic attraction, attracting the magnetic concave block 75 to move towards the wide electromagnet 76, achieving stable clamping and fixing of the fabric end. At this time, the two normally angled amplitude rods 721 move synchronously with the magnetic concave block 75. Under the squeezing action, the limiting frame 722 slides and expands along the limiting ring 723 to both sides. The end contact pads 725 apply a lateral tensile force to the fabric end, flattening it in advance, eliminating accumulated wrinkles, and ensuring the initial flatness of the feed.

[0039] After the fabric head is clamped, the equipment achieves station switching and power transfer through the transfer coupling mechanism. The transfer components 5 on both sides of the fabric head clamping adjustment component 7 are connected to the coupling component 6 on the drive device 4 through the interface slot 52 of the transfer frame 51. The interface sensor 53 detects the insertion status in real time. After the insertion is in place, the electromagnetic pin 54 is inserted into the coupling pin hole 61 to complete rigid locking, realizing a stable connection between the transfer component 5 and the drive device 4. When it is necessary to switch the traction station, the corresponding electromagnetic pin 54 retracts to unlock, thereby releasing the current connection and re-locking with the target drive device 4, completing the cross-station transfer of the fabric head clamping adjustment component 7.

[0040] The drive device 4 relies on the sliding engagement of pulleys and guide rail 2, and uses a built-in motor to drive gears that mesh with the track's toothed structure to achieve smooth sliding along the guide rail 2. Furthermore, the guide rail 2 is disconnected at the positions of rotating components such as tension rollers, effectively avoiding interference from roller rotation and ensuring that fabric feeding and tension adjustment do not interfere with each other. During the fabric feeding process, the skew detection sensor 724 on the lower side of the amplitude adjustment rod 721 collects the fabric's adhesion status in real time, accurately identifying abnormal conditions such as overall fabric skewness, unilateral offset, and loosening.

[0041] For different skew conditions, the equipment achieves differentiated and precise correction through the drive structure 74: the independent electromagnet 73 can control the descent height of the armature 743 through multi-level magnetic attraction, driving the selection contact rod 742 to switch different engagement heights. The selective engagement of the stepped convex key and the keyway of the amplitude adjustment rod 721 matches different correction requirements. When the entire fabric is skewed, the selection contact rod 742 simultaneously engages with the amplitude adjustment rods 721 on both sides, and the amplitude adjustment motor 741 drives the two rods to rotate synchronously, correcting the overall angle of the fabric. When the fabric is skewed on one side, the corresponding height convex key individually engages with the amplitude adjustment rod 721 on one side, achieving precise correction of the fabric on that side. Simultaneously, the adjustment motor 55 on the outside of the transfer assembly 5 can drive the overall fabric head clamping adjustment assembly 7 to rotate and fine-tune, assisting in correcting the overall orientation angle of the fabric head. Ultimately, this achieves integrated operation of automatic fabric head clamping, flattening, traction, and skew correction, ensuring continuous, stable, and high-precision operation of the fabric inspection process.

[0042] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic leading and drawing-in selvedge device for a cloth inspecting machine, comprising a cloth inspecting mechanism (1), characterized in that, Also includes: Several guide rails (2) are supported on the outer wall of the fabric inspection mechanism (1) by multiple sets of suspension brackets (3) and span across the outer periphery of each fabric guide component of the fabric inspection mechanism (1) to constrain the fabric travel path and guide the fabric to be conveyed along a predetermined extension direction. The guide rails (2) are arranged in a non-continuous segmented manner and are disconnected at the corresponding installation area of ​​rotating components such as tension rollers to avoid interference with the rotation of the rollers. Fabric end clamping and adjusting assembly (7) is used to clamp and fix the end of the fabric wound on the unwinding roller of the fabric inspection mechanism (1); Multiple sets of drive devices (4) are fitted on several guide rails (2) and slide along the outer wall of the guide rails (2) by means of the power equipment on the drive devices (4); The handover coupling mechanism includes handover components (5) disposed on both sides of the fabric end clamping adjustment component (7) and coupling components (6) fixed on multiple sets of driving devices (4). The handover components (5) are selectively locked with different sets of coupling components (6), and the handover of the fabric end clamping adjustment component (7) between different driving devices (4) is completed by the cooperation of the two.

2. The automatic fabric extension and pulling device for a fabric inspection machine according to claim 1, characterized in that, The receiving assembly (5) includes a receiving frame (51), and interface slots (52) are provided on both the left and right sides of the receiving frame (51); an interface sensor (53) is mounted on the outer wall of the receiving frame (51), and the interface sensor (53) is used to detect whether any components are inserted or removed inside the interface slot (52). Each of the interface slots (52) is equipped with an electromagnetic pin (54) on its outer side. The electromagnetic pin (54) is used to lock the components that extend into the interface slot (52). The outer wall of the coupling member (6) is provided with a coupling pin hole (61) that matches the pin shaft of the electromagnetic pin (54).

3. The automatic fabric extension and pulling device for a fabric inspection machine according to claim 1, characterized in that, The drive device (4) includes several pulleys embedded in the guide rail (2) and an electrical control device for driving the drive device (4) as a whole to move along the guide rail (2). The electrical control device is equipped with a motor and gears. The guide rail (2) has a toothed groove structure that meshes with and matches the gears on the contact surface where it fits with the gears.

4. The automatic fabric extension and pulling device for a fabric inspection machine according to claim 1, characterized in that, The fabric end clamping and adjusting assembly (7) includes: The fabric end clamping bracket (71) is formed by welding multiple sheet metal parts, with a through cavity reserved in the middle for the fabric end to pass through; The magnetic recess (75) is connected and assembled to the inner wall of the fabric clamping bracket (71) via an elastic component; A wide electromagnet (76) is fixed inside the fabric clamping bracket (71). When the wide electromagnet (76) is energized, it can attract the magnetic concave block (75) to stick to itself, thereby clamping the fabric end inserted inside the cavity.

5. The automatic fabric extension and pulling device for a fabric inspection machine according to claim 4, characterized in that, The magnetic recess (75) has a groove formed on its inner side as an assembly reference, and an amplitude adjustment bracket (72) is assembled inside the groove; the amplitude adjustment bracket (72) includes: Two sets of limiting rings (723) are fixedly assembled inside the groove; Two sets of limit frames (722) are slidably assembled in the limit ring (723). The limit frames (722) assembled in the same limit ring (723) are connected by springs to achieve elastic reset. The amplitude adjustment rod (721) and the corresponding limit frame (722) on the same side are hinged together by a torsion spring. Each of the amplitude adjustment rods (721) is also equipped with a contact pad (725) at its end that contacts the fabric.

6. The automatic fabric extension and pulling device for a fabric inspection machine according to claim 5, characterized in that, Several skew detection sensors (724) are mounted on the lower side of both amplitude adjustment rods (721). The skew detection sensors (724) are used to monitor the clamping and fixing posture of the fabric on the amplitude adjustment rods (721) in real time and identify the skewed and offset state of the fabric.

7. The automatic fabric extension and pulling device for a fabric inspection machine according to claim 5, characterized in that, A drive structure (74) is also assembled between the two amplitude adjustment rods (721), the drive structure (74) comprising: Select the contact rod (742), which has several protruding keys on its outer peripheral sidewall. The protruding keys are arranged in a stepped height and can selectively engage with the keyway opened inside the amplitude adjustment rod (721) to complete the selective driving of one or more amplitude adjustment rods (721). An amplitude modulation motor (741) is fixedly mounted on the outer wall of the fabric clamping bracket (71), and the output end of the amplitude modulation motor (741) forms a limiting sliding fit with the selection contact rod (742); Among them, the lower part of the selection contact rod (742) is rotatably equipped with an armature (743); the lower side wall of the cloth clamping bracket (71) is fixed with an independent electromagnet (73), and the independent electromagnet (73) can attract and drive the armature (743) to move towards the side of the independent electromagnet (73) after being energized.

8. The automatic fabric extension and pulling device for a fabric inspection machine according to claim 1, characterized in that, The outer wall of the hand-on assembly (5) is also equipped with an adjustment motor (55) for driving the fabric head clamping adjustment assembly (7) to rotate and thereby adjust the orientation angle of the fabric head.

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