CN114608986A

CN114608986A - Fabrics annex sharp edge detection device

Info

Publication number: CN114608986A
Application number: CN202210511716.2A
Authority: CN
Inventors: 陈伟
Original assignee: Nantong Tongzhou Wotman Household Textile Co ltd
Current assignee: Nantong Tongzhou Wotman Household Textile Co ltd
Priority date: 2022-05-12
Filing date: 2022-05-12
Publication date: 2022-06-10
Anticipated expiration: 2042-05-12
Also published as: CN114608986B

Abstract

The invention discloses a textile accessory sharp edge detection device, which comprises a material to be detected, a clamping and conveying mechanism, a hardness detection mechanism and a sharp marking mechanism, wherein the clamping and conveying mechanism is used for clamping and conveying the material to be detected; hardness detection mechanism is including the fixed case that sets up in waiting to detect material one side, the opening has been seted up in the left side of fixed case, opening part magnetic suspension cooperation has the installing frame of U type, the installing frame internal rotation is connected with and supports the pinch roller, the installing frame is located the equal fixedly connected with limiting plate of the upper and lower extreme of fixed incasement, set up the second spout with limiting plate sliding connection in the fixed case, the horizontal sliding connection has the push pedal in the fixed case. According to the invention, through the mutual cooperation of the clamping and conveying mechanism, the hardness detection mechanism and the sharp marking mechanism, the clamping and conveying, the hardness detection and the sharp marking of different types of materials to be detected are realized, so that the subsequent material treatment is facilitated, the efficiency is higher compared with that of manual detection, and the dependency on light detection is low compared with that of light detection.

Description

Textile accessory sharp edge detection device

Technical Field

The invention relates to the technical field of detection, in particular to a device for detecting sharp edges of textile accessories.

Background

In the textile field, in order to solve the problem that the traditional sewing product is not smooth and beautiful enough at the sewing position and is easy to form flocculent burrs or loose edges, the prior art adopts an ultrasonic mode die cutting mode, although the technical problem is solved, the ultrasonic cutting utilizes the energy of ultrasonic waves, so that the cut material is locally heated and melted, and the purpose of cutting the material is achieved, so that the textile formed by the ultrasonic mode die cutting mode can cause the edge of the product to be hardened due to the temperature, sharp edges and sharp points are formed, and the risk of accidentally injuring the skin of a human body exists in the processes of producing the textile and using the textile.

In order to improve the product quality and avoid accidental injury risks, manufacturers can detect sharp edges of textile materials and cut and remove the textile materials after the sharp edges are detected. The existing detection mode is a mode of manual hand touch or observation, the human factor is large, and the overall detection effect is poor; and secondly, an optical means is utilized, namely infrared light, visible light or ultraviolet light is utilized for testing or analyzing, the light transmittance of a material hardening area and a material non-hardening area or the wavelength change of incident light and the like need to depend on products with higher intellectualization, and the degree of dependence on talents for operation and management is high. And a device for detecting and marking sharp edges of materials using a mechanical structure is lacking.

To this end, we propose a device for detecting sharp edges of textile accessories to solve the above problems.

Disclosure of Invention

The present invention is directed to a device for detecting sharp edges of textile accessories to solve the problems set forth in the background art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a textile accessory sharp edge detection device comprises a material to be detected, a clamping and conveying mechanism, a hardness detection mechanism and a sharp marking mechanism; the hardness detection mechanism comprises a fixed box fixedly arranged on one side of a material to be detected, an opening is formed in the left side of the fixed box, a U-shaped mounting frame is matched with the opening in a magnetic suspension manner, a pressing wheel is connected in the mounting frame in a rotating manner, limiting plates are fixedly connected to the upper end and the lower end of the mounting frame in the fixed box, a second sliding chute in sliding connection with the limiting plates is formed in the fixed box, a push plate is connected in the fixed box in a horizontal sliding manner, a spring coil is fixedly abutted between the push plate and the mounting frame, the spring coil is provided with two strands and is electrically connected with a current detector, the current detector is fixedly arranged on one side of the push plate and is in signal connection with a controller, a first nut is embedded in the push plate, a first threaded rod is in threaded connection with the first nut, and one end of the first threaded rod is rotatably connected with the inner wall of the fixed box, a first motor for driving a first threaded rod is fixedly mounted on the outer side of the fixed box; the sharp marking mechanism comprises fixed frame boxes with openings on two sides, a loading channel is arranged in each fixed frame box, protrusions are symmetrically and convexly arranged at the upper end of each fixed frame box, one side, opposite to each protrusion, is rotatably connected with a second threaded rod, a second motor used for driving the second threaded rod is fixedly mounted on one side of each protrusion, a movable plate is sleeved outside each second threaded rod, a second nut in threaded connection with the second threaded rod is embedded in each movable plate, the lower end of each movable plate penetrates through each fixed frame box and extends into the loading channel, a movable groove for the horizontal movement of each movable plate is formed in each fixed frame box, each movable plate is connected with a U-shaped frame through butterfly bolts, a plurality of spherical grooves are equidistantly arranged at the upper end of each U-shaped frame, rubber pads are fixedly bonded on the inner walls of the spherical grooves, marking needles are vertically penetrated in the spherical grooves, and gear balls are integrally formed on the marking needles, the breach has been seted up to loading channel's right lower extreme, the spacing groove has been seted up in the top of breach to fixed frame box, the spacing inslot runs through to be provided with the riser, set up the lift groove that the width is greater than second threaded rod cross-sectional diameter in the riser, the fixed cam that has cup jointed on the second threaded rod, the cam is snail shell form, the cam has the straight face at a curved surface and a connection curved surface both ends that change apart from second threaded rod axis linearity, one side of riser is rotated and is connected with the contact wheel, and contact wheel and cam rolling contact, fixedly connected with and spacing groove sliding connection's limiting plate on the riser, the riser overcoat is equipped with the third spring, and the both ends of third spring offset with limiting plate, spacing inslot top respectively, the lower extreme fixedly connected with of riser strikes the board.

Preferably, the clamping and conveying mechanism comprises an upper conveying belt and a lower conveying belt which are arranged from top to bottom and are in contact with a material to be detected, the inner side of the upper conveying belt is in transmission connection with two upper transmission rollers, the inner side of the lower conveying belt is in transmission connection with two lower transmission rollers, supporting plates are arranged at the two ends of the upper transmission roller and the two ends of the lower transmission roller which are located on the same side, the two ends of the lower transmission roller are respectively in rotation connection with the supporting plates, bearing seats are respectively in rotation connection with the two ends of the upper transmission roller, a first sliding groove in sliding connection with the bearing seats is formed in one side of the supporting plates, first springs are fixedly connected to the upper ends of the bearing seats and the inner top ends of the first sliding grooves, and a third motor used for driving one of the upper transmission rollers and a fourth motor used for driving one of the lower transmission rollers are respectively and fixedly installed on one side of one of the supporting plates.

Preferably, the third motor is the same type as the fourth motor but driven in the opposite direction.

Preferably, the second motor is a stepping motor.

Preferably, the pitch of the second threaded rod is equal to the pitch of every two adjacent marking pins.

Preferably, when the limiting plate contacts with the bottom wall in the limiting groove, the height of the lower end face of the knocking plate is lower than that of the upper end of the marking needle, the vertical distance from the lower end face of the knocking plate to the marking needle is larger than the thickness of the U-shaped frame, and the thickness of the U-shaped frame is larger than the diameter of the gear ball.

Preferably, the diameter of the gear ball is smaller than that of the ball-shaped groove and larger than the inner diameters of the two rubber pads.

Preferably, a marking flag is fixedly connected to the outer wall of each marking needle.

Compared with the prior art, the invention has the beneficial effects that:

the clamping and conveying mechanism is used for elastically clamping and conveying the material to be detected, the relative position of the material to be detected and the hardness detection mechanism is maintained, the material with a long length can be detected, and the clamping and conveying mechanism is suitable for being used in factories; the method comprises the steps that the hardness/yield coefficient of a hardened area and a non-hardened area of a material to be detected is different, the non-hardened area can be bent in the process of passing through a hardness detection mechanism, the hardened area is bent or is not bent compared with the non-hardened area in the process of passing through the hardness detection mechanism, so that a distance difference is generated, the distance difference is converted into micro current, and whether the edge is sharp or not is judged by detecting whether the micro current is generated or not; after the edge is judged to be a hardening area, the hardening area is marked in time through a sharp marking mechanism so as to facilitate subsequent treatment of technicians;

according to the invention, through the mutual cooperation of the clamping and conveying mechanism, the hardness detection mechanism and the sharp marking mechanism, the clamping and conveying, the hardness detection and the sharp marking of different types of materials to be detected are realized, so that the subsequent material treatment is facilitated, the efficiency is higher compared with that of manual detection, and the dependency on light detection is low compared with that of light detection.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of a material to be detected, a clamping and conveying mechanism and a hardness detection mechanism of a textile accessory sharp edge detection device provided by the invention;

FIG. 2 is a front sectional view of a hardness testing mechanism of a sharp edge testing device for textile accessories according to the present invention;

FIG. 3 is a schematic three-dimensional structure diagram of a sharp marking mechanism of a device for detecting sharp edges of textile accessories according to the present invention;

FIG. 4 is a partially enlarged schematic view of FIG. 3;

FIG. 5 is a front sectional view of a sharp marking mechanism of a device for detecting sharp edges of textile accessories according to the present invention;

FIG. 6 is an enlarged schematic view of the structure at A in FIG. 5;

FIG. 7 is a schematic side view of a cam of the sharp edge detection device of a textile accessory according to the present invention;

fig. 8 is a schematic structural diagram of a partial top view of a U-shaped frame of a device for detecting sharp edges of textile accessories according to the present invention.

The reference numerals mean:

1 detecting a material to be detected;

2 a clamping conveying mechanism, a 21 supporting plate, a 22 lower conveying belt, a 221 lower driving roller, a 23 upper conveying belt, a 231 upper driving roller, a 232 bearing seat, a 233 first spring and a 234 first sliding groove;

3, a hardness detection mechanism, a 31 fixing box, a 32 mounting frame, a 33 pressing wheel, a 34 limiting plate, a 35 second chute, a 36 push plate, a 37 spring coil, a 38 current detector, a 39 first threaded rod and a 310 first motor;

the marking device comprises a 4-sharp marking mechanism, a 41-fixed frame box, a 411 loading channel, a 412 notch, a 413 movable groove, a 414 protrusion, a 42 second threaded rod, a 421 moving plate, a 422 second motor, a 43U-shaped frame, a 431 spherical groove, a 432 rubber pad, a 44 marking needle, a 441 gear ball, a 442 marking flag, a 45 vertical plate, a 451 lifting groove, a 452 knocking plate, a 453 limit plate, a 454 third spring, a 455 contact wheel and a 456 cam.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-8, the device for detecting the sharp edge of a textile accessory comprises a material 1 to be detected, a clamping and conveying mechanism 2, a hardness detection mechanism 3 and a sharp marking mechanism 4.

The basic concept of the invention is as follows:

the clamping and conveying mechanism 2 is used for elastically clamping and conveying the material 1 to be detected, the relative position of the material 1 to be detected and the hardness detection mechanism 3 is maintained, the material with a long length can be detected, and the device is suitable for being used in factories; the hardness/yield coefficient of a hardened area and a non-hardened area of the material 1 to be detected are different, the non-hardened area can be bent in the process of passing through the hardness detection mechanism 3, the hardened area is bent or not bent compared with the non-hardened area in the process of passing through the hardness detection mechanism 3, so that a distance difference is generated, the distance difference is converted into generation of micro current, and whether the edge is sharp or not is judged by detecting whether the micro current is generated or not; after the edge is judged to be a hardened area, the hardened area is marked in time by the sharp marking mechanism 4 so as to facilitate subsequent processing of a technician.

Concretely, the clamping and conveying mechanism 2 comprises an upper conveying belt 23 and a lower conveying belt 22 which are arranged up and down and are in contact with the material 1 to be detected, two upper conveying rollers 231 are connected to the inner side of the upper conveying belt 23 in a transmission manner, two lower conveying rollers 221 are connected to the inner side of the lower conveying belt 22 in a transmission manner, supporting plates 21 are arranged at the two ends of the upper conveying roller 231 and the lower conveying roller 221 which are positioned at the same side, the two ends of the lower conveying roller 221 are respectively connected with the supporting plates 21 in a rotation manner, bearing seats 232 are respectively connected to the two ends of the upper conveying roller 231 in a rotation manner, a first sliding groove 234 which is connected with the bearing seats 232 in a sliding manner is formed in one side of the supporting plates 21, a first spring 233 is fixedly connected to the upper end of the bearing seats 232 and the inner top end of the first sliding groove 234 together, the upper conveying belt 23 and the connecting parts thereof are low in integral gravity, the thickness of the material 1 to be detected cannot be influenced, a third motor for driving one of the upper conveying roller 231 and a lower conveying roller for driving one of the lower conveying roller are respectively fixedly installed on one of the one supporting plate 21, and a driving one of the lower conveying roller for driving one of the lower conveying roller 221, the third motor and the fourth motor (not shown in the figure) are of the same type but opposite in driving direction, so as to ensure the same driving speed, and both motors are driven at low speed.

When the clamping and conveying mechanism 2 of the invention is used, the third motor and the fourth motor are driven in opposite directions, so as to drive the upper conveying belt 23 and the lower conveying belt 22 to be meshed and transmitted inwards, and the upper transmission roller 231 elastically clamps the material 1 to be detected placed on the upper conveying belt 23 and the lower conveying belt 22 under the gravity of the bearing block 232 and the elastic force of the first spring 233, so that the clamping and conveying mechanism is suitable for textiles with different thicknesses.

Specifically, the hardness detection mechanism 3 includes a fixing box 31 fixedly arranged on one side of the material 1 to be detected, an opening is formed in the left side of the fixing box 31, a U-shaped mounting frame 32 is matched with the opening in a magnetic suspension manner, the magnetic suspension here is the prior art, and too much description is omitted here, and through the magnetic suspension matching, the influence of gravity of the pressing wheel 33, the mounting frame 32 and the like on friction is greatly reduced, so that the friction can be ignored, and a magnetic field is provided for the spring coil 37.

The pressing wheel 33 is connected in the mounting frame 32 in a rotating mode, the upper end and the lower end of the mounting frame 32 in the fixing box 31 are fixedly connected with the limiting plates 34, the second sliding groove 35 which is connected with the limiting plates 34 in a sliding mode is formed in the fixing box 31 and limits the movement of the mounting frame 32, the push plate 36 is connected in the fixing box 31 in a horizontal sliding mode, the spring coil 37 is fixed between the push plate 36 and the mounting frame 32 in a supporting mode, the spring coil 37 is provided with two strands and electrically connected with the current detector 38, the two strands of spring coils 37 are arranged in a close mode and enable the two ends to be connected with the current detector 38, the current detector 38 is fixedly installed on one side of the push plate 36 and connected with the controller through signals, the current detector 38 and the controller are in the prior art, and the controller is electrically connected with other electric components in the invention and is controlled.

The embedded first nut that is equipped with of push pedal 36, first nut female connection have first threaded rod 39, and the one end of first threaded rod 39 rotates with fixed case 31 inner wall to be connected, and fixed case 31's outside fixed mounting has a first motor 310 that is used for driving first threaded rod 39, and first motor 310 drives push pedal 36 horizontal motion through driving first threaded rod 39 under first nut female connection's the prerequisite.

When the hardness detection mechanism 3 is used, the edge of the material 1 to be detected is in contact with the outer wall of the concave part of the pressing wheel 33 in the conveying process, the non-hardened edge area is bent, the bending degree of the hardened edge area is smaller than that of the non-hardened area or the hardened edge area is not bent, the mounting frame 32 is pushed inwards through the pressing wheel 33, the spring coil 37 is compressed under a magnetic field, so that a tiny current is formed in the spring coil and is detected by the current detector 38, and the sharp marking mechanism 4 is used for real-time marking.

It should be noted that, because the types of the materials 1 to be detected are various and the edge sharpness is different, the compression amount of the resistance/spring coil 37 of the pressing wheel 33 is adjusted according to the types and the acceptance degree, specifically, referring to fig. 2, the first motor 310 drives the first threaded rod 39 to drive the pushing plate 36 to move axially, thereby increasing or decreasing the compression amount of the spring coil 37.

Specifically, the sharp marking mechanism 4 includes a fixed frame box 41 with openings at two sides, a loading channel 411 is arranged in the fixed frame box 41, protrusions 414 are symmetrically and convexly arranged at the upper end of the fixed frame box 41, one opposite side of the two protrusions 414 is rotatably connected with a second threaded rod 42, a second motor 422 for driving the second threaded rod 42 is fixedly mounted at one side of one of the protrusions 414, a moving plate 421 is sleeved outside the second threaded rod 42, a second nut in threaded connection with the second threaded rod 42 is embedded in the moving plate 421, the lower end of the moving plate 421 penetrates through the fixed frame box 41 and extends into the loading channel 411, a movable groove 413 for horizontal movement of the moving plate 421 is formed in the fixed frame box 41, and the second motor 422 drives the second threaded rod 42 to drive the moving plate 421 to move in the movable groove 413.

The moving plate 421 is connected with the U-shaped frame 43 through butterfly bolts, the U-shaped frame 43 can be detached quickly as required, a plurality of spherical grooves 431 are equidistantly arranged at the upper end of the U-shaped frame 43, rubber pads 432 are fixedly adhered to the inner walls of the spherical grooves 431, the rubber pads 432 can be extruded and deformed by the gear balls 441, the marker pins 44 vertically penetrate through the spherical grooves 431, the gear balls 441 are integrally formed on the marker pins 44, the marker flags 442 are fixedly connected to the outer walls of the marker pins 44, and the reminding effect of the marker pins 44 is improved.

A notch 412 is formed at the right lower end of the loading passage 411, the notch 412 is a puncture position, a limiting groove is formed above the notch 412 in the fixed frame box 41, a vertical plate 45 penetrates through the limiting groove, a lifting groove 451 with the width larger than the diameter of the section of the second threaded rod 42 is formed in the vertical plate 45, and the vertical plate 45 does not influence the rotation of the second threaded rod 42.

Fixed cover has been connected with cam 456 on second threaded rod 42, cam 456 is the snail shell form, cam 456 has a curved surface and a straight face of connecting the curved surface both ends of the linear change of second threaded rod 42 axis, the interval of curved surface both ends to second threaded rod 42 axis is crescent, one side of riser 45 is rotated and is connected with contact wheel 455, and contact wheel 455 and cam 456 rolling contact, utilize the rolling contact of curved surface and contact wheel 455 to lift riser 45 etc., fixedly connected with on riser 45 with spacing board 453 with spacing groove sliding connection, riser 45 overcoat is equipped with third spring 454, and the both ends of third spring 454 respectively with limiting plate 453, spacing inslot top offset, the lower extreme fixedly connected with of riser 45 strikes board 452, utilize the reseing of third spring 454 to make strikes board 452 mark needle 44.

The second motor 422 is a stepping motor, which is available in various types, and not illustrated herein, the pitch angle of the second motor 422 is 360 °, the pitch of the second threaded rod 42 is equal to the distance between every two adjacent marking pins 44, that is, the U-shaped frame 43 moves by the distance between every two adjacent marking pins 44 when the second threaded rod 42 rotates for one circle.

When the limiting plate 453 is in contact with the bottom wall of the limiting groove, the height of the lower end face of the knocking plate 452 is lower than that of the upper end of the marking needle 44, so that the downward pressing acting force of the knocking plate 452 on the marking needle 44 is ensured, the vertical distance from the lower end face of the knocking plate 452 to the marking needle 44 is larger than the thickness of the U-shaped frame 43, the thickness of the U-shaped frame 43 is larger than the diameter of the retaining ball 441, and the retaining ball 441 can penetrate through the spherical groove 431.

The diameter of the gear ball 441 is smaller than the diameter of the spherical groove 431 and larger than the inner diameters of the two rubber pads 432, so that the gear ball 441 is limited by the rubber pads 432.

In the case of using the sharp marking mechanism 4 of the present invention, when the hardness detection mechanism 3 has determined the hardening area, referring to fig. 5-6, the second motor 422 drives the second threaded rod 42 to rotate once, the moving plate 421 pushes the U-shaped frame 43 to move rightward by the distance of the marking pin 44, during which the cam 456 rotates once, the contact wheel 455 takes the outer wall of the shortest distance from the cam 456 to the second threaded rod 42 as the initial position, the contact wheel 455 gradually raises the vertical plate 45 and the stopper plate 453 during the contact with the curved surface 456 of the cam, compresses the third spring 454, when the contact wheel 455 suddenly returns to the initial position, such that the marking pin 44 is in the notch 412, the vertical plate 45, the stopper plate 453 and the striking plate 452 are reset at the moment of the third spring 454, the striking plate 452 strikes the marking pin 44 downward, the gear ball 441 presses the rubber pad 432 and passes through the spherical groove 431 in the U-shaped frame 43, the marking pin 44 penetrates into the vicinity of the hardened area of the material 1 to be detected to effect marking.

The sharp marking means 4 is fixedly provided in the transport direction of the gripping and transporting means 2, and the moving direction of the U-shaped frame 43 coincides with the transport direction of the gripping and transporting means 2.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. A textile accessory sharp edge detection device comprises a material (1) to be detected, and is characterized in that: the device also comprises a clamping and conveying mechanism (2), a hardness detection mechanism (3) and a sharp marking mechanism (4);

the hardness detection mechanism (3) comprises a fixed box (31) fixedly arranged on one side of a material (1) to be detected, an opening is formed in the left side of the fixed box (31), a U-shaped installation frame (32) is matched with the opening in a magnetic suspension manner, a pressing wheel (33) is connected in the installation frame (32) in a rotating manner, a limiting plate (34) is fixedly connected to the upper end and the lower end of the installation frame (32) in the fixed box (31), a second sliding groove (35) in sliding connection with the limiting plate (34) is formed in the fixed box (31), a push plate (36) is connected in the fixed box (31) in a horizontal sliding manner, a spring coil (37) is fixedly abutted against the position between the push plate (36) and the installation frame (32), the spring coil (37) is provided with two strands and is electrically connected with a current detector (38), and the current detector (38) is fixedly arranged on one side of the push plate (36) and is connected with a controller through signals, a first nut is embedded in the push plate (36), a first threaded rod (39) is connected to the first nut in a threaded manner, one end of the first threaded rod (39) is rotatably connected with the inner wall of the fixed box (31), and a first motor (310) for driving the first threaded rod (39) is fixedly mounted on the outer side of the fixed box (31);

The sharp marking mechanism (4) comprises a fixed frame box (41) with openings at two sides, a loading channel (411) is arranged in the fixed frame box (41), protrusions (414) are symmetrically and convexly arranged at the upper end of the fixed frame box (41), one side of each protrusion (414) is connected with a second threaded rod (42) in a rotating mode, one side of each protrusion (414) is fixedly provided with a second motor (422) used for driving the second threaded rod (42), a movable plate (421) is sleeved outside the second threaded rod (42), a second nut in threaded connection with the second threaded rod (42) is embedded in the movable plate (421), the lower end of the movable plate (421) penetrates through the fixed frame box (41) and extends into the loading channel (411), a movable groove (413) for horizontal movement of the movable plate (421) is formed in the fixed frame box (41), and the movable plate (421) is connected with a U-shaped frame (43) through a butterfly bolt, the upper end of the U-shaped frame (43) is equidistantly provided with a plurality of spherical grooves (431), the inner walls of the spherical grooves (431) are fixedly bonded with rubber mats (432), marking needles (44) vertically penetrate through the spherical grooves (431), a gear ball (441) is integrally formed on each marking needle (44), the right lower end of the loading channel (411) is provided with a notch (412), a limit groove is formed in the fixed frame box (41) above the notch (412), a vertical plate (45) penetrates through the limit groove, a lifting groove (451) with the width larger than the section diameter of the second threaded rod (42) is formed in the vertical plate (45), a cam (456) is fixedly sleeved on the second threaded rod (42), the cam (456) is in a snail shell shape, and the cam (456) is provided with a curved surface which is linearly changed from the axis of the second threaded rod (42) and a straight surface which is connected with two ends of the curved surface, one side of riser (45) is rotated and is connected with contact wheel (455), and contact wheel (455) and cam (456) rolling contact, fixedly connected with and spacing groove sliding connection's limiting plate (453) are gone up in riser (45), riser (45) overcoat is equipped with third spring (454), and the both ends of third spring (454) respectively with limiting plate (453), spacing inslot top counterbalance, the lower extreme fixedly connected with of riser (45) strikes board (452).

2. A textile accessory sharp edge detection device according to claim 1 wherein: the clamping and conveying mechanism (2) comprises an upper conveying belt (23) and a lower conveying belt (22) which are arranged up and down and are in contact with a material (1) to be detected, two upper transmission rollers (231) are connected to the inner side of the upper conveying belt (23) in a transmission manner, two lower transmission rollers (221) are connected to the inner side of the lower conveying belt (22) in a transmission manner, supporting plates (21) are arranged at two ends of the upper transmission roller (231) and the lower transmission roller (221) which are positioned on the same side, two ends of the lower transmission roller (221) are respectively in rotary connection with the supporting plates (21), bearing seats (232) are respectively in rotary connection with two ends of the upper transmission roller (231), a first sliding groove (234) in sliding connection with the bearing seats (232) is formed in one side of the supporting plates (21), and a first spring (233) is fixedly connected to the upper end of each bearing seat (232) and the inner top end of each first sliding groove (234), one side of one of the supporting plates (21) is fixedly provided with a third motor for driving one of the upper driving rollers (231) and a fourth motor for driving one of the lower driving rollers (221) respectively.

3. A textile accessory sharp edge detection apparatus according to claim 2 wherein: the third motor and the fourth motor are the same in type and opposite in driving direction.

4. A textile accessory sharp edge detection apparatus according to claim 1 wherein: the second motor (422) is a stepper motor.

5. A textile accessory sharp edge detection apparatus according to claim 1 wherein: the pitch of the second threaded rod (42) is equal to the distance between every two adjacent marking pins (44).

6. A textile accessory sharp edge detection apparatus according to claim 1 wherein: when the limiting plate (453) is in contact with the inner bottom wall of the limiting groove, the height of the lower end face of the knocking plate (452) is lower than that of the upper end of the marking needle (44), the vertical distance from the lower end face of the knocking plate (452) to the marking needle (44) is larger than the thickness of the U-shaped frame (43), and the thickness of the U-shaped frame (43) is larger than the diameter of the gear ball (441).

7. A textile accessory sharp edge detection apparatus according to claim 1 wherein: the diameter of the gear ball (441) is smaller than that of the spherical groove (431) and larger than the inner diameters of the two rubber pads (432).

8. A textile accessory sharp edge detection device according to claim 1 wherein: the outer wall of each marking needle (44) is fixedly connected with a marking flag (442).