Automatic curtain hemming device and method

Abstract

An automatic curtain hemming device relates to the field of curtain production equipment and comprises a cloth rolling support, a cloth rolling sleeve, a cloth rolling mechanism, a driving mechanism and an automatic edge aligning mechanism, and the cloth rolling support is positioned on two sides of a cloth conveying direction; the cloth rolling sleeve is arranged at the bottom of the cloth rolling support and located above cloth. The automatic edge aligning mechanism comprises an edge aligning roller, a turnover assembly, a steering assembly, an electric eye and a controller. The edge aligning roller is located at the front end of the cloth rolling sleeve and rolls the top face of the inverted-L-shaped section so as to roll the hemmed cloth. The overturning assembly is connected with the opposite-edge roller to drive the opposite-edge roller to overturn so as to be far away from or close to the cloth rolling sleeve, the edge position of follow-up cloth during hemming is observed through the electric eye, when the edge position of the cloth deviates, the steering assembly is controlled by the controller to drive the opposite-edge roller to deflect so that the opposite-edge roller can be reset to the proper position, the consistency of the hemming size is guaranteed, and the hemming efficiency is improved. Product quality is improved, defective rate is reduced, and production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of window curtain production equipment, and particularly relates to a window curtain automatic hemming device and method. BACKGROUND

[0002] The window curtain hemming process is a basic process in window curtain sewing, and hemming is a key process for guaranteeing edge flatness, preventing thread falling and improving aesthetic degree, especially part of the window curtain needs to be embedded with hard core cloth to enhance the stiffness, and the hemming precision is required to be higher. The traditional process relies on manual sewing of a sewing machine, and a professional hemming machine is used in a modern factory to cooperate with automatic sewing equipment, so that the hemming width can be accurately controlled, and production efficiency and consistency can be improved. The width of the hemming and the thread density can be flexibly adjusted according to the style of the window curtain and the characteristics of the fabric. The traditional hemming method needs to manually roll the cloth edge into a cloth sleeve which is equal in length to the cloth, or into a small cloth sleeve, and the remaining cloth is rolled into the cloth sleeve by inertia during cloth sewing. The length of the cloth sleeve in the former is too long, and the cloth edge needs to be completely aligned with the cloth sleeve during installation, which requires a higher degree of skill of the operator, and occupies a larger volume, which is not conducive to centralized production. In the latter, the cloth is prone to deviation during cloth conveying due to uneven tension and equipment positioning deviation when conveying and sewing by automatic sewing equipment. The existing edge alignment structure is mostly fixed and limited, and the cloth edge position cannot be dynamically adjusted in real time, resulting in inconsistent hemming width and high defect rate of finished products after subsequent sewing, which needs to be improved. SUMMARY

[0003] The application aims to overcome the shortcomings of the prior art and provide a window curtain automatic hemming device and method.

[0004] The application adopts the following technical scheme: A window curtain automatic hemming device comprises a cloth rolling support, a cloth rolling sleeve, a cloth rolling mechanism, a driving mechanism and an automatic edge alignment mechanism, The cloth rolling support is located on both sides of the cloth conveying direction; The cloth rolling sleeve is arranged at the bottom of the cloth rolling support and above the cloth, and comprises an L-shaped section connected with the cloth rolling support and extending outward, and an inverted L-shaped section arranged at the end of the L-shaped section and extending inward, the width and height of the inverted L-shaped section are smaller than those of the L-shaped section, and the inverted L-shaped section and the L-shaped section form a rotation channel for rolling the cloth; The cloth rolling mechanism is arranged on the cloth rolling support to drive the cloth to roll around the cloth rolling sleeve; The driving mechanism drives the cloth rolling support to move in the horizontal direction to gather the cloth inward or convey the cloth head backward; The automatic edge alignment mechanism comprises an edge alignment roller, a turnover assembly, a steering assembly, an electric eye and a controller. The edge alignment roller is located at the front end of the cloth winding sleeve and rolls on the top surface of the inverted L-shaped section to roll the cloth after the edge alignment. The turnover assembly is connected with the edge alignment roller to drive the turnover assembly to turn away from or close to the cloth winding sleeve. The steering assembly is connected with the edge alignment roller to drive the steering assembly to deflect left or right to control the left and right positions of the cloth in the conveying direction. The electric eye is arranged at the front end of the cloth winding sleeve to detect the position of the cloth edge. The controller controls the operation of the steering assembly according to the signal fed back by the electric eye.

[0005] Preferably, the cloth winding mechanism comprises a cloth insertion plate, a plate lifting assembly, a plate telescopic assembly and a secondary cloth winding assembly. The cloth insertion plate is arranged relative to the cloth winding sleeve. The plate lifting assembly is arranged on the cloth support and connected with the cloth insertion plate to drive the cloth insertion plate to lift. The plate telescopic assembly is connected between the cloth winding sleeve and the plate lifting assembly to drive the cloth insertion plate to move close to or away from the cloth winding sleeve. The secondary cloth winding assembly comprises a cloth rotating cylinder and a rotating block. The extending end of the cloth rotating cylinder is downward and arranged on the cloth winding sleeve between the L-shaped section and the inverted L-shaped section. The rotating block is arranged at the end of the cloth rotating cylinder and inserted into the space below the inverted L-shaped section when the cloth rotating cylinder extends and rotates.

[0006] Preferably, the plate lifting assembly comprises a base plate and a plate lifting cylinder. The base plate is arranged at the bottom of the cloth support. The plate lifting cylinder is arranged on the base plate and connected with the cloth insertion plate to drive the cloth insertion plate to lift.

[0007] Preferably, the plate telescopic assembly comprises a plate sliding rail and a plate telescopic cylinder. The plate sliding rail is arranged at the bottom of the cloth support and connected with the base plate. The base plate is movably arranged on the plate sliding rail. The plate telescopic cylinder is connected between the base plate and the cloth support to drive the cloth insertion plate to move towards or away from the cloth winding sleeve.

[0008] Preferably, the driving mechanism comprises a cloth transverse sliding table and a cloth longitudinal sliding table. The extending direction of the cloth transverse sliding table is perpendicular to the cloth conveying direction. The extending direction of the cloth longitudinal sliding table is parallel to the cloth conveying direction. The cloth longitudinal sliding table is movably arranged on the cloth transverse sliding table. The cloth support is movably arranged on the cloth longitudinal sliding table.

[0009] Preferably, the bottom plate and the support lifting cylinder are further included. The bottom plate is arranged on the cloth longitudinal sliding table and movable along the cloth conveying direction. The support lifting cylinder is connected between the bottom plate and the cloth support to drive the cloth support to lift.

[0010] Preferably, the turning assembly comprises a turning plate, a hinge and a turning cylinder, the turning plate is connected with the cloth rolling support through the hinge and can rotate around a horizontal axis perpendicular to the cloth conveying direction, the pair of edge rollers are rotatably arranged at the bottom of the turning plate; the turning cylinder is connected between the turning plate and the cloth rolling support, one end of the turning cylinder is rotatably connected with the turning plate and the other end is rotatably connected with the cloth rolling support, the turning cylinder extends and retracts to drive the turning plate to drive the rollers to move away from or close to the cloth rolling sleeve.

[0011] Preferably, the turning assembly comprises a turning shaft and a turning cylinder, the turning shaft is vertically arranged on the turning plate, and the pair of edge rollers are arranged at the bottom of the turning shaft and can rotate with the turning shaft; the turning cylinder is arranged on the turning plate and connected with the turning shaft to drive the turning shaft to rotate around its axis.

[0012] Preferably, the device further comprises a core feeding mechanism, the core feeding mechanism comprises a core feeding sleeve, a core feeding roller, an electronic meter and a cutting assembly, one end of the core feeding sleeve is opposite to the space between the inverted L-shaped section and the L-shaped section; the core feeding roller is opposite to the other end of the core feeding sleeve and conveys the hard core cloth inward; the electronic meter is connected with the core feeding roller to record the length of the core cloth; and the cutting assembly is opposite to the core feeding roller to cut off the core cloth.

[0013] An automatic hemming method of a curtain based on any one of the above-mentioned automatic hemming devices of a curtain, comprising: (1) Before hemming, the cloth rolling sleeve is controlled to rise above the cloth, the cloth rolling plug plate is controlled to move below the cloth, and the cloth rolling sleeve and the cloth rolling plug plate are moved away from each other to the maximum distance, and the cloth rotating cylinder is reset; (2) Gathering cloth, the driving mechanism drives the cloth rolling support to move inward to gather the cloth, so that the edge of the cloth moves below the cloth rolling sleeve and above the cloth rolling plug plate; (3) First cloth rolling, after the cloth rolling plug plate is controlled to move upward above the cloth rolling sleeve, the cloth rolling plug plate is controlled to move above the inverted L-shaped section in the direction close to the cloth rolling sleeve, and the cloth rolling sleeve is appropriately moved in the direction close to the cloth rolling plug plate so that the end of the cloth moves to the bottom of the cloth rotating cylinder; (4) Second cloth rolling, the cloth rotating cylinder is extended, the rotating block presses and rotates the cloth downward, and the cloth edge is brought between the L-shaped section and the inverted L-shaped section to complete the cloth rolling; (5) Core feeding, the hard core cloth is conveyed into the cloth rolling through the core feeding sleeve connected with the rotating channel; (6) Cloth feeding and edge alignment, finally the whole cloth rolling support moves forward along the cloth conveying direction to send the hem into the subsequent edge sewing machine for sewing, and the edge position state of the cloth rolled into the cloth rolling sleeve is detected by the electric eye, and the edge alignment roller is controlled to deflect to adjust the position of the cloth edge.

[0014] As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are: by observing the edge position of the subsequent fabric roll-in during the hemming process with an electric eye, when the edge position of the fabric is deviated, the controller controls the steering component to drive the opposite edge roller to deflect, so that it is reset to the appropriate position, ensuring the consistency of the hemming size, improving product quality, reducing the defect rate, and improving production efficiency; The fabric rolling plate rises and moves towards the fabric rolling sleeve, causing the fabric to be lifted upwards and flipped inwards once. Then, the fabric edge is pushed downwards into the inverted L section after the fabric rolling cylinder extends, completing the second edge rolling. The entire process requires no manual operation, precisely controls the fabric edge rolling, frees up labor, and greatly improves edge rolling efficiency. The flipping component can flip the opposite edge roller upwards during hemming so as not to affect the normal hemming process. After the hemming is finished, flipping it downwards will press the opposite edge roller onto the fabric, making it easier to align the edges during subsequent sewing. To address the issues of uncontrolled core fabric feeding length and poor compatibility with the rolled edge, a dedicated core feeding mechanism, combined with an electronic meter counter and cutting components, enables precise control and cutting of the core fabric length, ensuring a perfect fit between the core fabric and the rolled edge. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of this application; Figure 2 This is a top view of an embodiment of this application; Figure 3 This is a longitudinal view perpendicular to the fabric input direction of an embodiment of this application; Figure 4 This is a transverse view of an embodiment of the present application, perpendicular to the conveying direction of the transverse conveyor belt; Figure 5 This is a schematic diagram of the structure of an embodiment of the present application facing the transverse conveyor belt conveying direction; Figure 6 for Figure 1 A magnified view of a section at point A in the middle; Figure 7 for Figure 3 A magnified view of a section at point B in the middle; Figure 8 for Figure 3 A magnified view of a section at point C; Figure 9 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 10 for Figure 9 A magnified view of a section at point D; Figure 11 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 12 This is a longitudinal sectional view of the present invention; Figure 13 is a transverse sectional view of the present application; Figure 14 is a structural schematic of a folding device for a window curtain according to an application example Figure 1 ; Figure 15 is a structural schematic of a folding device for a window curtain according to an application example Figure 2 ; Figure 16 is a structural schematic of a folding device for a window curtain according to an application example In the figure: 1 - cloth releasing device; 11 - cloth releasing groove; 12 - first cloth feeding roller; 13 - second cloth feeding roller; 14 - angular velocity sensor; 15 - cloth feeding adjusting cylinder; 2 - edge cutting device; 21 - rotary blade; 22 - cloth pressing rod; 23 - cutting blade; 3 - first edge rolling device; 31 - cloth rolling support; 32 - cloth rolling sleeve; 321 - L-shaped section; 322 - inverted L-shaped section; 33 - cloth rolling mechanism; 331 - cloth rolling insert plate; 332 - insert plate lifting assembly; 3321 - base plate; 3322 - insert plate lifting cylinder; 333 - insert plate telescopic assembly; 3331 - insert plate sliding rail; 3332 - insert plate telescopic cylinder; 334 - secondary cloth rolling assembly; 3341 - cloth rolling rotary cylinder; 3342 - rotary block; 34 - core feeding mechanism; 341 - core feeding sleeve; 342 - core feeding roller; 343 - electronic meter counter; 344 - cutting assembly; 35 - first driving mechanism; 351 - cloth rolling transverse sliding table; 352 - cloth rolling longitudinal sliding table; 353 - base plate; 354 - support lifting cylinder; 36 - first automatic edge aligning mechanism; 361 - edge aligning roller; 362 - overturning assembly; 3621 - overturning plate; 3622 - hinge; 3623 - overturning cylinder; 363 - steering assembly; 3631 - steering shaft; 3632 - steering cylinder; 364 - electric eye; 4 - first edge seaming machine; 5 - transverse conveying belt; 51 - baffle; 6 - second edge rolling device; 7 - second edge seaming machine; 8 - curtain folding device; 81 - third edge seaming machine; 82 - transfer clamping mechanism; 821 - transfer clamping cylinder; 822 - transfer longitudinal sliding table; 823 - transfer rotary cylinder; 824 - transfer connecting rod; 825 - extension rod; 826 - rotating block; 827 - rotating shaft; 83 - folding mechanism; 831 - double-knife clamping jaw; 832 - single-knife clamping jaw; 833 - folding clamping cylinder; 834 - folding lifting sliding table; 835 - folding longitudinal sliding table; 84 - reversing clamping mechanism; 841 - two-axis linear module; 8411 - reversing longitudinal sliding table; 8412 - reversing transverse sliding table; 842 - reversing clamping cylinder; 8421 - reversing clamping jaw; 8422 - groove; 843 - reversing assembly; 8431 - positioning plate; 8432 - positioning groove; 8433 - reverser; 8434 - reversing connecting rod; 8435 - positioning block; 85 - folding edge aligning mechanism; 851 - friction belt assembly; 8511 - edge aligning support; 8512 - pulley; 8513 - friction belt; 8514 - belt motor; 852 - clamping assembly; 8521 - clamping plate; 8522 - edge aligning clamping cylinder; 8523 - clamping groove; 853 - position sensor; 9 - cloth feeding device; 91 - first cloth feeding mechanism; 911 - first cloth feeding belt assembly; 912 - first cloth feeding pressing plate; 913 - first cloth feeding cylinder; 92 - second cloth feeding mechanism; 921 - second cloth feeding belt assembly; 922 - second cloth feeding pressing plate; 923 - second cloth feeding cylinder; 93 - third cloth feeding mechanism. DETAILED DESCRIPTION

[0016] The application will be further described by the specific embodiments.

[0017] Referring to Figures 1 to 16 As shown in the figure, a curtain production equipment includes, in sequence along the cloth input direction, a cloth feeding device 1, an edge cutting device 2, a first edge rolling device 3, a first edge sewing machine 4, a horizontal conveying belt 5, a second edge rolling device 6 connected with the horizontal conveying belt 5 perpendicularly to the cloth conveying direction, a second edge sewing machine 7, and a curtain folding device 8, and a cloth feeding device 9 arranged above each device to clamp the cloth head for conveying.

[0018] The cloth feeding device 1 is arranged at the front end of the equipment, unwinds, irons and uniformly feeds the cloth rearward, and includes a cloth feeding groove 11, a first cloth feeding roller 12, a second cloth feeding roller 13, an angular velocity sensor 14 and a cloth feeding adjusting cylinder 15. The cloth feeding groove 11 is arranged at the front end of the equipment for placing a cloth roll. The first cloth feeding roller 12 and the second cloth feeding roller 13 are arranged oppositely above and below to convey the cloth forward. The angular velocity sensor 14 is connected with the first cloth feeding roller 12 and measures the cloth feeding speed thereof. The cloth feeding adjusting cylinder 15 is connected with the second cloth feeding roller 13 and controls the lifting of the second cloth feeding roller 13 according to the signal fed back by the angular velocity sensor 14. The lifting of the second cloth feeding roller 13 is controlled according to the signal fed back by the angular velocity sensor 14 to adjust the cloth feeding speed, ensure the flatness of the cloth fed into the equipment, avoid the processing error caused by excessive or untimely cloth feeding, and improve the quality of the product. Specifically, the first cloth feeding roller 12 is an electric heating roller. The cloth passes below the first cloth feeding roller 12 and around above the second cloth feeding roller 13, and the first cloth feeding roller 12 irons the cloth.

[0019] The edge cutting device 2 is located behind the cloth feeding device 1 and at both sides of the cloth to cut the raw edges, and includes a rotary blade 21 and a cloth pressing rod 22. The rotary blade 21 is located in the cloth conveying direction and arranged parallel to the cloth conveying direction. The cloth pressing rod 22 is opposite to the rotary blade 21 and arranged above the rotary blade 21 to ensure that the cloth passes between the rotary blade 21 and the cloth pressing rod 22. It also includes a cutting blade 23 which can move perpendicularly to the cloth conveying direction to cut the cloth.

[0020] The first edge rolling device 3 is located at both sides of the cloth, and includes a first edge rolling mechanism composed of a cloth rolling support 31, a cloth rolling sleeve 32 and a cloth rolling mechanism 33, a core feeding mechanism 34, a first driving mechanism 35 and a first automatic edge aligning mechanism 36.

[0021] The cloth rolling support 31 is located at both sides of the cloth conveying direction.

[0022] The cloth winding sleeve 32 is arranged at the bottom of the cloth winding support 31 and above the cloth, and comprises an L-shaped section 321 connected with the cloth winding support 31 and extending outward, and an inverted L-shaped section 322 arranged at the end of the L-shaped section 321 and extending inward. The width and height of the inverted L-shaped section 322 are both smaller than those of the L-shaped section 321, and a rotation channel for winding the cloth is formed between the inverted L-shaped section 322 and the L-shaped section 321.

[0023] The cloth winding mechanism 33 is arranged on the cloth winding support 31 and drives the cloth to wind around the cloth winding sleeve 32. The cloth winding mechanism 33 comprises a cloth winding plug plate 331, a plug plate lifting assembly 332, a plug plate telescopic assembly 333, and a secondary cloth winding assembly 334. The cloth winding plug plate 331 is arranged relative to the cloth winding sleeve 32. The plug plate lifting assembly 332 is arranged on the cloth winding support 31 and connected with the cloth winding plug plate 331 to drive the cloth winding plug plate 331 to lift. The plug plate telescopic assembly 333 is connected between the cloth winding sleeve 32 and the plug plate lifting assembly 332 to drive the cloth winding plug plate 331 to move close to or away from the cloth winding sleeve 32. The secondary cloth winding assembly 334 comprises a cloth winding rotating cylinder 3341 and a rotating block 3342. The extending end of the cloth winding rotating cylinder 3341 faces downward and is arranged on the cloth winding sleeve 32 between the L-shaped section 321 and the inverted L-shaped section 322. The rotating block 3342 is arranged at the end of the cloth winding rotating cylinder 3341 and extends and rotates into the space below the inverted L-shaped section 322 along with the cloth winding rotating cylinder 3341. The cloth winding plug plate 331 is lifted and moves towards the cloth winding sleeve 32, so that the cloth is lifted upward and then turned inward for the first time. Then, the cloth edge is pushed downward into the space below the inverted L-shaped section 322 by the extending cloth winding rotating cylinder 3341 to complete the second turning of the cloth edge. The whole process does not require manual operation, the turning of the cloth edge is accurately controlled, the labor is liberated, and the turning efficiency is greatly improved. Specifically, the plug plate lifting assembly 332 comprises a base plate 3321 and a plug plate lifting cylinder 3322. The base plate 3321 is arranged at the bottom of the cloth winding support 31. The plug plate lifting cylinder 3322 is arranged on the base plate 3321 and connected with the cloth winding plug plate 331 to drive the cloth winding plug plate 331 to lift. Further, the plug plate telescopic assembly 333 comprises a plug plate sliding rail 3331 and a plug plate telescopic cylinder 3332. The plug plate sliding rail 3331 is arranged at the bottom of the cloth winding support 31 and connected with the base plate 3321. The base plate 3321 is movably arranged on the plug plate sliding rail 3331. The plug plate telescopic cylinder 3332 is connected between the base plate 3321 and the cloth winding support 31 to drive the cloth winding plug plate 331 to move towards or away from the cloth winding sleeve 32.

[0024] The core feeding mechanism 34 comprises a core feeding sleeve 341, a core feeding roller 342, an electronic meter 343, and a cutting assembly 344. One end of the core feeding sleeve 341 is opposite to the space between the inverted L-shaped section 322 and the L-shaped section 321. The core feeding roller 342 is opposite to the other end of the core feeding sleeve 341 and feeds the hard core cloth inward. The electronic meter 343 is connected with the core feeding roller 342 to record the length of the core cloth. The cutting assembly 344 is opposite to the core feeding roller 342 to cut off the core cloth.

[0025] The first driving mechanism 35 drives the cloth winding support 31 to move in the horizontal direction to gather the cloth inward or to convey the cloth head backward. The first driving mechanism 35 comprises a cloth winding transverse slide 351, a cloth winding longitudinal slide 352, a base plate 353 and a support lifting cylinder 354. The extension direction of the cloth winding transverse slide 351 is perpendicular to the cloth conveying direction. The cloth winding longitudinal slide 352 is arranged on the cloth winding transverse slide 351 and is movable in the extension direction of the cloth winding transverse slide 351. The cloth winding support 31 is arranged on the cloth winding longitudinal slide 352. The base plate 353 is arranged on the cloth winding longitudinal slide 352 and is movable in the cloth conveying direction. The support lifting cylinder 354 is connected between the base plate 353 and the cloth winding support 31 to drive the lifting of the cloth winding support 31.

[0026] The first automatic edge aligning mechanism 36 comprises an edge aligning roller 361, a turnover assembly 362, a steering assembly 363, an electric eye 364 and a controller. The edge aligning roller 361 is located at the front end of the cloth winding sleeve 32 and is rolled on the top surface of the inverted L-shaped section 322 to roll the cloth after the edge is rolled. The turnover assembly 362 is connected with the edge aligning roller 361 to drive the turnover of the edge aligning roller 361 to move away from or close to the cloth winding sleeve 32. The steering assembly 363 is connected with the edge aligning roller 361 to drive the deflection of the edge aligning roller 361 to the left or right to control the left and right positions of the cloth in the conveying direction. The electric eye 364 is arranged at the front end of the cloth winding sleeve 32 to detect the position of the edge of the cloth. The controller controls the operation of the steering assembly 363 according to the signals fed back by the electric eye 364. The position of the edge of the cloth when the subsequent cloth is rolled in is observed by the electric eye 364 when the edge is rolled. When the position of the edge of the cloth deviates, the controller controls the steering assembly 363 to drive the deflection of the edge aligning roller 361 to reset it to the appropriate position, so as to ensure the consistency of the rolled edge size, improve the product quality, reduce the rate of defective products and improve the production efficiency. Specifically, the turnover assembly 362 comprises a turnover plate 3621, a hinge 3622 and a turnover cylinder 3623. The turnover plate 3621 is connected with the cloth winding support 31 through the hinge 3622 and is rotatable about the horizontal axis perpendicular to the cloth conveying direction. The edge aligning roller 361 is rotatably arranged at the bottom of the turnover plate 3621. The turnover cylinder 3623 is connected between the turnover plate 3621 and the cloth winding support 31. One end of the turnover cylinder 3623 is rotatably connected with the turnover plate 3621, and the other end is rotatably connected with the cloth winding support 31. The turnover cylinder 3623 is extended and retracted to drive the turnover plate 3621 to drive the roller to move away from or close to the cloth winding sleeve 32. The edge aligning roller 361 is turned up by the turnover assembly 362 when the edge is rolled, so that it does not affect the normal rolling of the edge. When the rolling of the edge is finished, the edge aligning roller 361 is rolled on the cloth when it is turned down, so as to facilitate the edge alignment during the subsequent sewing. Further, the steering assembly 363 comprises a steering shaft 3631 and a steering cylinder 3632. The steering shaft 3631 is vertically arranged on the turnover plate 3621. The edge aligning roller 361 is arranged at the bottom of the steering shaft 3631 and is rotatable with the steering shaft 3631. The steering cylinder 3632 is arranged on the turnover plate 3621 and is connected with the steering shaft 3631 to drive the steering shaft 3631 to rotate about its axis.

[0027] The first hemming machine 4 is positioned behind the first hemming device 3 and is used to sew hems (top and bottom edges of the curtain). The first sewing machine is a common automatic sewing machine in the art, which is not the focus of this application, and its structure and selection will not be described in detail here.

[0028] The transverse conveyor belt 5 receives and transversely conveys the fabric perpendicular to the fabric conveying direction. The transverse conveyor belt 5 also includes baffles 51 disposed on both sides of the transverse conveyor belt 5. The baffles 51 extend outward from both sides of the transverse conveyor belt 5 and tilt upward, forming a retention space between the two baffles 51 for accommodating the curtain.

[0029] The second hemming device 6 includes a second hemming mechanism that automatically hemms the fabric edge and a second drive mechanism that drives the second hemming mechanism to move horizontally to gather the fabric for hemming or to convey the fabric backward to the second sewing machine 7. The structure of the second hemming device 6 is completely the same as that of the first hemming device 3 except for the lack of the core feeding mechanism 34. Its structure will not be described in detail here. Since the second fabric rolling device located on both sides of the transverse conveyor belt 5 after the fabric is transversely shifted performs hemming on the side of the curtain, and the side of the curtain does not need to be inserted with a rigid core fabric, the core feeding mechanism 34 is not required at this location.

[0030] The second hemming machine 7 is located behind the second hemming device 6 and opposite to the second hemming mechanism. It receives and sews the fabric hemming (curtain side edge) fed by the second drive mechanism.

[0031] The curtain pleating device 8 includes a third sewing machine 81, a transfer clamping mechanism 82, a pleating mechanism 83, a reversing clamping mechanism 84, and a pleating opposite edge mechanism 85.

[0032] The third hemming machine 81 is located behind the second hemming device 6, on one side of the transverse conveyor belt 5 and facing the edge of the fabric.

[0033] The transfer clamping mechanism 82 is located at the end of the transverse conveyor belt 5. It clamps the fabric edge and moves it backward and inward simultaneously, transferring the fabric edge from the standby position on the same side as the third fabric feeding mechanism 93 to the processing position, so that the fabric edge (top edge of the curtain) rolled up by the first hemming device 3 naturally hangs down. The transfer clamping mechanism 82 includes a transfer clamping gripper 821, a transfer longitudinal slide 822, a transfer rotary cylinder 823, and a transfer connecting rod 824. The transfer clamping gripper 821 is located on both sides of the fabric to clamp the top edge of the fabric; the transfer longitudinal slide 822 is arranged along the fabric conveying direction; the transfer rotary cylinder 823 is located between the transfer clamping gripper 821 and the transfer longitudinal slide 822, and moves with the transfer longitudinal slide 822 and drives the transfer clamping gripper 821 to rotate to the processing position; one end of the transfer connecting rod 824 is located on the transfer rotary cylinder 823, and the other end is located on the transfer clamping gripper 821, and rotates with the transfer rotary cylinder 823 to keep the orientation of the transfer clamping gripper 821 unchanged. Specifically, it also includes an extension rod 825, which extends outward from the top surface of the extension end of the transfer rotary cylinder 823. A folding clamping cylinder 833 is located at the end of the extension rod 825 and is rotatably connected to the end of the extension rod 825 via a rotating shaft 827. A rotating block 826 that can rotate with the rotating shaft 827 is provided on the rotating shaft 827. One end of the transfer connecting rod 824 is rotatably connected to the rotating block 826, and the other end is rotatably mounted on the cylinder body of the transfer rotary cylinder 823.

[0034] The folding mechanism 83 is opposite to the transfer clamping assembly 852 in the processing position. It includes a double-blade gripper 831 located on the outer side of the top edge of the fabric and a single-blade gripper 832 located on the inner side of the top edge of the fabric. The double-blade gripper 831 and the single-blade gripper 832 close to fold the top edge of the fabric to form a Korean fold. Specifically, the pleating mechanism 83 also includes a pleating clamping cylinder 833, a pleating lifting slide 834, and a pleating longitudinal slide 835. The pleating clamping cylinder 833 is connected to and drives the double-blade gripper 831 and the single-blade gripper 832 to open or close. The pleating lifting slide 834 is set perpendicular to the ground, and the pleating clamping cylinder 833 can be raised and lowered on it. After clamping the fabric edge, it rises with the pleating lifting slide 834 to be opposite to the reversing clamping mechanism 84. The pleating longitudinal slide 835 is arranged longitudinally, and the pleating lifting slide 834 can be moved on it. The pleating clamping cylinder 833 moves closer to or further away from the fabric edge with the pleating longitudinal slide 835.

[0035] The reversing clamping mechanism 84 receives the Korean fold formed by the pleating mechanism 83, flips it, and conveys it to the third sewing machine 81 for sewing. The reversing clamping mechanism 84 receives the fabric opposite to the transfer clamping mechanism 82, flips the fabric, and conveys it to the pleating and sewing machine for sewing. It includes two axial linear modules 841, a reversing clamping gripper 842, and a reversing assembly 843. The two axial modules 841 are positioned on a horizontal plane above the fabric, with the two axes facing the fabric conveying direction and perpendicular to it, respectively. The reversing clamping gripper 842 faces the processing position and is connected to the two axial modules 841, moving closer to or away from the processing position to clamp the Korean fold. The reversing assembly 843 is connected to the reversing clamping gripper 842, driving the reversing clamping gripper 842 to rotate, reversing the direction of the Korean fold and conveying it to the pleating and sewing machine. Specifically, the dual-axis linear module 841 includes a reversing longitudinal slide 8411 extending along the fabric conveying direction and a reversing transverse slide 8412 vertically disposed on the reversing longitudinal slide 8411 and movable therewith; the reversing assembly 843 includes a positioning plate 8431, a positioning groove 8432, a reversing device 8433, a reversing linkage 8434, and a positioning block 8435. The positioning plate 8431 is movably disposed on the reversing longitudinal slide 8411, and the reversing transverse slide 8412 is disposed on the positioning plate 8431; the positioning groove 8432 is formed on the positioning plate 8431 along the extending direction of the reversing transverse slide 8412. It includes a horizontal section and a V-shaped section connected sequentially along the direction gradually approaching the pleating and sewing machine; a reversing device 8433 is movably mounted on a reversing transverse slide 8412, and its rotation axis extends longitudinally in the horizontal plane; a reversing gripper 842 is rotatably mounted on the reversing device 8433; a reversing link 8434 is connected to the reversing device 8433 to drive the reversing gripper 842 to rotate; a positioning block 8435 is mounted on the reversing link 8434 and engages with the positioning groove 8432, and the positioning block 8435 drives the reversing device 8433 to rotate when it moves from the horizontal section of the positioning groove 8432 to the V-shaped section with the reversing transverse slide 8412. Furthermore, the reversing gripper 842 is equipped with a reversing gripper 8421 for gripping the folded fabric edge. A groove 8422 is recessed within the inner side of the reversing gripper 8421. The groove 8422 rotates with the reversing assembly 843 from a position facing the inside of the fabric to a position facing the folding and sewing machine. When the reversing gripper 842 is at the starting point of the stroke of the reversing longitudinal slide 8411, the reversing gripper 8421 is completely disengaged from the processing position.

[0036] Preferably, the reversing transverse slide 8411 is equipped with two cylinders, one long and one short, and a transversely extending guide rail. The reversing clamping gripper 842 is movably mounted on the guide rail. The cylinder bodies of the two cylinders are fixedly connected to each other. The extended end of the short cylinder is fixed to the positioning plate 8431, and the extended end of the long cylinder is fixed to the reversing clamping gripper 842. When the short cylinder extends and the long cylinder retracts, the reversing clamping gripper 842 moves to the left away from the processing position; when the short cylinder retracts and the long cylinder retracts, the reversing clamping gripper 842 moves to the processing position; when the short cylinder retracts and the long cylinder extends, the reversing clamping gripper 842 moves to the right to the third sewing machine 81 for sewing.

[0037] The pleating and edge-aligning mechanism 85 is positioned below the pleating mechanism 83 to position and adjust the horizontal position of the top edge of the fabric in the vertical direction. The pleating and edge-aligning mechanism 85 includes a friction belt assembly 851, a clamping assembly 852, and a position sensor 853. The friction belt assembly 851 is horizontally arranged below the pleating mechanism 83, and the friction surface of the belt is parallel to the naturally hanging fabric edge. The clamping assembly 852 is rotatably mounted on the friction belt assembly 851, and the fabric edge passes between the clamping assembly 852 and the friction belt assembly 851. The position sensor 853 is mounted on the friction belt assembly 851, opposite to the fabric edge, and monitors the amount of movement of the fabric edge. Specifically, the friction belt assembly 851 includes a side support 8511, a pulley 8512, a friction belt 8513, and a belt motor 8514. The side support 8511 is located on one side of the fabric edge and extends along the fabric conveying direction. The pulley 8512 is positioned opposite to the side support 8511. The friction belt 8513 is sleeved on the two pulleys 8512, with the friction surface parallel to the hanging fabric edge and located outside the side support 8511. The belt motor 8514 is located on the side support 8511 and connected to one of the pulleys 8512, driving the pulley 8512 to rotate forward and backward according to the fabric edge position fed back by the position sensor 853. Furthermore, the clamping assembly 852 includes a clamping plate 8521 and an opposite-side clamping cylinder 8522. The clamping plate 8521 is rotatably mounted on the opposite-side bracket 8511 and can rotate in the direction of approaching or moving away from the friction belt 8513. The clamping plate 8521 has a clamping groove 8523 with a width greater than that of the friction belt 8513. One end of the opposite-side clamping cylinder 8522 is rotatably connected to the opposite-side bracket 8511, and the other end is rotatably connected to the clamping plate 8521. The clamping plate 8521 rotates with the opposite-side clamping cylinder 8522 so that the friction belt 8513 enters the clamping groove 8523, pressing the fabric edge to contact the friction belt 8513.

[0038] The fabric feeding device 9 includes a first fabric feeding mechanism 91 that clamps and feeds the front end of the fabric between the fabric feeding device 1 and the first sewing machine 4; a second fabric feeding mechanism 92 that clamps the fabric end behind the first sewing machine 4 and drives the fabric across to the outermost side of the transverse conveyor belt 5; and a third fabric feeding mechanism 93 that clamps the edge of the fabric on the side of the transverse conveyor belt 5 and feeds it along the conveying direction of the transverse conveyor belt 5.

[0039] The first fabric feeding mechanism 91 includes a first fabric feeding belt assembly 911, a first fabric feeding pressure plate 912, and a first fabric feeding cylinder 913. The first fabric feeding belt assembly 911 is connected between the fabric feeding device 1 and the first sewing machine 4 and is located above the edge trimming device 2 and the first fabric rolling device. The first fabric feeding pressure plate 912 is located below both sides of the fabric, with one side extending upwards and connecting to the first fabric feeding belt. It is driven by the first fabric feeding belt assembly 911 to move between the fabric feeding device 1 and the first sewing machine 4. The first fabric feeding cylinder 913 is located above the fabric and opposite the first fabric feeding pressure plate 912. It can extend downwards to clamp the fabric on the side facing forward in the conveying direction (the side of the curtain). Specifically, the first fabric feeding pressure plate 912 is located close to the edge of the fabric and is not opposite to the first fabric rolling device in its stored state. After the first fabric feeding mechanism 91 completes the fabric feeding and resets, the first fabric rolling device moves inwards to roll the fabric.

[0040] The second fabric feeding mechanism 92 includes a second fabric feeding belt assembly 921, a second fabric feeding pressure plate 922, and a second fabric feeding cylinder 923. The second fabric feeding belt assembly 921 is parallel to the first fabric feeding mechanism 91 and is arranged across the transverse conveyor belt 5 and opposite to the first sewing machine 4. The second fabric feeding pressure plate 922 is located below both sides in the fabric input direction, and one side extends upward to connect with the second fabric feeding belt assembly 921. It is driven by the second fabric feeding belt assembly 921 to move from the right side of the transverse conveyor belt 5 to the left side of the transverse conveyor belt 5. The second fabric feeding cylinder 923 is located above the fabric and the second fabric feeding pressure plate 922, and can extend downward to clamp the fabric on the side facing forward in the conveying direction (the side of the curtain).

[0041] The third fabric feeding mechanism 93 includes a third fabric feeding belt assembly 931, which is positioned above the transverse conveyor belt 5 and behind the second fabric feeding mechanism 92. It extends along the conveying direction of the transverse conveyor belt 5 to its end. After clamping the fabric on the forward-facing side (top edge of the curtain), the third fabric feeding belt assembly 931 moves the fabric from the middle section of the transverse conveyor belt 5 (the end of the second fabric feeding belt assembly 921) to its end. The end of the third fabric feeding mechanism 93 is opposite to the transfer clamping mechanism 82, where the transfer clamping gripper 821 clamps the top edge of the curtain conveyed by the third fabric feeding mechanism 93 to the end of the transverse conveyor belt 5.

[0042] When producing curtains: (1) Fabric feeding and ironing: The rolled fabric is placed in the fabric feeding groove 11 of the fabric feeding device 1. The worker pulls the fabric head to pass through the first feeding roller 12 and the second feeding roller 13 in sequence. After the first feeding mechanism 91 clamps the fabric head, the device is started. The fabric head is pulled forward. The first feeding roller 12 heats and irons the fabric passing through here. At the same time, the feeding speed is monitored by the angular velocity sensor 14 and the feeding adjustment cylinder 15 is extended and retracted to drive the second feeding roller 13 to move up and down to control the feeding speed. (2) Cutting and feeding the fabric: When the fabric moves forward with the first feeding mechanism 91, it passes between the pressing rod 22 and the rotating blade 21 to complete the cutting of both sides of the fabric. According to the signal fed back by the angular velocity sensor 14, the cutting blade 23 is controlled to move and quantitatively cut out a piece of fabric of the set length required for a complete curtain and continue to be fed backward. (3) The top and bottom edges of the curtains are rolled up. ① Before the fabric enters the first hemming device 3, control the fabric rolling sleeve 32 to rise above the fabric, and control the fabric rolling insert 331 to move below the fabric. The fabric rolling sleeve 32 and the fabric rolling insert 331 move away from each other to the maximum distance, and control the fabric rolling rotary cylinder 3341 to reset. ② Gathering the fabric: The fabric head moves with the first fabric feeding mechanism 91 to a position parallel to the end of the fabric roll sleeve 32. The first driving mechanism 35 drives the fabric roll bracket 31 to move inward to gather the fabric, so that the edge of the fabric moves to the bottom of the fabric roll sleeve 32 and the top of the fabric roll insert 331. ③ Once the fabric is rolled, control the fabric rolling plate 331 to move upward to above the fabric rolling sleeve 32, then control the fabric rolling plate 331 to move along the direction close to the fabric rolling sleeve 32 to above the inverted L section 322. At the same time, the fabric rolling sleeve 32 moves appropriately along the direction close to the fabric rolling plate 331 so that the end of the fabric moves to the bottom of the fabric rolling rotary cylinder 3341 and is clamped. ④ Secondary fabric rolling: the fabric rolling rotary cylinder 3341 extends, the rotating block 3342 presses down on the fabric and rotates, bringing the fabric edge between the L-shaped section 321 and the inverted L-shaped section 322 to complete the fabric rolling. ⑤ Core feeding: The rigid core fabric is quantitatively fed into the rotary channel through the core feeding roller 342, electronic meter counter 343 and cutting assembly 344 via the core feeding sleeve 341. ⑥ Feeding the fabric and the opposite edge: Finally, the entire fabric roll support 31 moves forward along the fabric conveying direction to feed the rolled edge into the first sewing machine 4 for sewing, and controls the flipping component 362 to flip the opposite edge roller 361 downward to roll the fabric on the fabric roll sleeve 32. The edge position of the subsequent fabric rolled into the fabric roll sleeve 32 is detected by the photoelectric eye 364, and the opposite edge roller 361 is controlled to deflect so that the offset fabric edge returns to a straight line. (4) Transfer: After the top and bottom edges of the curtain are sewn and rolled by the first sewing machine 4, the fabric head is held by the second feeding mechanism 92 and moved across the right side of the transverse conveyor belt 5 to the left side, so that the fabric is laid flat on the transverse conveyor belt 5 and then the top edge, which is rolled, is held by the third feeding mechanism 93 and conveyed along the extension direction of the transverse conveyor belt 5. (5) Curtain side hem: During the horizontal translation process, the second hem rolling device 6 rolls up both sides of the fabric (curtain side) and the second hem sewing machine 7 sews them to form a hem; (6) Discount, ①After the fabric is rolled up, the top edge continues to be conveyed forward. After the top edge moves to the end of the transverse conveyor belt 5, the top edge end is clamped by the transfer clamping mechanism 82 and raised and moved inward to the processing position, so that the top edge of the fabric hangs down naturally. ② Simultaneously control the top edge of the fabric below the processing position of the folding and edge-aligning mechanism 85, and monitor the position of the top edge by the position sensor 853 to control the forward and reverse rotation of the friction belt assembly 851 to drive the fabric to move and keep it in a vertical state. ③ The folding mechanism 83 extends forward to the processing position and controls the double-blade gripper 831 and single-blade gripper 832 to close to form a Korean fold through the folding clamping cylinder 833. After clamping the Korean fold, it moves upward to the position opposite to the reversing clamping mechanism 84. ④ The reversing gripper 842 extends forward to above the processing position to grip the folded fabric and controls the folding gripper cylinder 833 to release and reset. Then, it drives the folded fabric to move laterally. After the reversing component 843 completes the reversal, it moves to the third sewing machine 81 to sew the folded fabric, then releases the fabric and resets. ⑤ Repeat the above steps until the top edge of the curtains is completely pleated.

[0043] This application achieves a high degree of automation in the curtain production process by using a first hemming device 3 to hem the top and bottom sides, then changing the fabric conveying direction via a transverse conveyor belt 5, and finally using a second hemming device 6 to hem the left and right sides of the fabric. This eliminates the need for manual intervention, freeing up a large amount of labor, and features concentrated processes, a compact equipment structure, and a small footprint.

[0044] The above description is merely a preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made in accordance with the scope of the patent application and the contents of the specification of the present invention should still fall within the scope of the patent of the present invention.

Claims

1. A window blind automatic hemming device characterized by: The application relates to a cloth winding device, which comprises a cloth winding support, a cloth winding sleeve, a cloth winding mechanism, a driving mechanism and an automatic edge aligning mechanism. The cloth winding support is arranged on both sides of the cloth conveying direction. The cloth winding sleeve is arranged at the bottom of the cloth winding support and above the cloth, and comprises an L-shaped section connected with the cloth winding support and extending outward, and an inverted L-shaped section arranged at the end of the L-shaped section and extending inward, wherein the width and height of the inverted L-shaped section are smaller than those of the L-shaped section, and a rotation channel for winding the cloth is formed between the inverted L-shaped section and the L-shaped section. The cloth winding mechanism is arranged on the cloth winding support to drive the cloth to wind around the cloth winding sleeve. The driving mechanism drives the cloth winding support to move in the horizontal direction to gather the cloth inward or convey the cloth head backward. The automatic edge aligning mechanism comprises an edge aligning roller, a turnover assembly, a steering assembly, an electric eye and a controller, the edge aligning roller is arranged at the front end of the cloth winding sleeve and rolls on the top surface of the inverted L-shaped section to roll the cloth after edge winding, the turnover assembly is connected with the edge aligning roller to drive the edge aligning roller to turn away from or close to the cloth winding sleeve, the steering assembly is connected with the edge aligning roller to drive the edge aligning roller to deflect leftward or rightward to control the left and right positions of the cloth in the conveying direction, the electric eye is arranged at the front end of the cloth winding sleeve to detect the position of the cloth edge, and the controller controls the steering assembly to work according to the signal fed back by the electric eye.

2. An automatic curtain hemming apparatus according to claim 1, wherein: The cloth winding mechanism comprises a cloth winding plug plate, a plug plate lifting assembly, a plug plate telescopic assembly and a secondary cloth winding assembly, the cloth winding plug plate is arranged relative to the cloth winding sleeve, the plug plate lifting assembly is arranged on the cloth winding support and connected with the cloth winding plug plate to drive the cloth winding plug plate to lift, the plug plate telescopic assembly is connected between the cloth winding sleeve and the plug plate lifting assembly to drive the cloth winding plug plate to close to or away from the cloth winding sleeve, and the secondary cloth winding assembly comprises a cloth winding rotary air cylinder and a rotary block, the extending end of the cloth winding rotary air cylinder faces downward and is arranged on the cloth winding sleeve between the L-shaped section and the inverted L-shaped section, and the rotary block is arranged at the end of the cloth winding rotary air cylinder, extends and rotates into the space below the inverted L-shaped section along with the cloth winding rotary air cylinder.

3. An automatic curtain hemming apparatus as claimed in claim 2, wherein: The plug plate lifting assembly comprises a base plate and a plug plate lifting air cylinder, the base plate is arranged at the bottom of the cloth winding support, and the plug plate lifting air cylinder is arranged on the base plate and connected with the cloth winding plug plate to drive the cloth winding plug plate to lift.

4. A device for automatically hemming a curtain according to claim 3, wherein: The plug plate telescopic assembly comprises a plug plate sliding rail and a plug plate telescopic air cylinder, the plug plate sliding rail is arranged at the bottom of the cloth winding support and connected with the base plate, the base plate is movably arranged on the plug plate sliding rail, and the plug plate telescopic air cylinder is connected between the base plate and the cloth winding support to drive the cloth winding plug plate to move relative to the cloth winding sleeve.

5. An apparatus for automatically hemming a window shade as defined in claim 1 wherein: The driving mechanism comprises a cloth transverse sliding table and a cloth longitudinal sliding table, the extending direction of the cloth transverse sliding table is perpendicular to the cloth conveying direction, the extending direction of the cloth longitudinal sliding table is parallel to the cloth conveying direction, the cloth longitudinal sliding table is movably arranged on the cloth transverse sliding table, and the cloth winding support is movably arranged on the cloth longitudinal sliding table.

6. An automatic curtain hemming apparatus as claimed in claim 5, wherein: The application further comprises a base plate and a support lifting air cylinder, the base plate is arranged on the cloth longitudinal sliding table and can move back and forth along the cloth conveying direction, and the support lifting air cylinder is connected between the base plate and the cloth winding support to drive the cloth winding support to lift.

7. An apparatus for automatically hemming a window shade as defined in claim 1 wherein: The turning assembly comprises a turning plate, a hinge and a turning cylinder. The turning plate is connected with the cloth rolling support through the hinge and can rotate around a horizontal axis perpendicular to the cloth conveying direction. The opposite edge roller is rotatably arranged at the bottom of the turning plate. The turning cylinder is connected between the turning plate and the cloth rolling support. One end of the turning cylinder is rotatably connected with the turning plate, and the other end is rotatably connected with the cloth rolling support. The turning cylinder extends and retracts to drive the turning plate to drive the roller to move away from or close to the cloth rolling sleeve.

8. An automatic curtain hemming apparatus as claimed in claim 7, wherein: The turning assembly comprises a turning shaft and a turning cylinder. The turning shaft is arranged vertically on the turning plate. The opposite edge roller is arranged at the bottom of the turning shaft and can rotate with the turning shaft. The turning cylinder is arranged on the turning plate and connected with the turning shaft to drive the turning shaft to rotate around its axis.

9. An apparatus for automatically hemming a window shade as defined in claim 1, wherein: The core feeding mechanism comprises a core feeding sleeve, a core feeding roller, an electronic meter and a cutting assembly. One end of the core feeding sleeve is opposite to the space between the inverted L-shaped section and the L-shaped section. The core feeding roller is opposite to the other end of the core feeding sleeve and conveys the hard core cloth inward. The electronic meter is connected with the core feeding roller to record the length of the core cloth. The cutting assembly is opposite to the core feeding roller to cut off the core cloth.

10. An automatic hemming method of a window curtain based on the automatic hemming device of any one of claims 1-9, characterized in that: (1) before hemming, the cloth rolling sleeve is controlled to rise above the cloth, the cloth rolling plug plate is controlled to move below the cloth, the cloth rolling sleeve and the cloth rolling plug plate are moved away from each other to the maximum distance, and the cloth rotating cylinder is reset; (2) the cloth is gathered, the driving mechanism drives the cloth rolling support to move inward to gather the cloth, and the edge of the cloth is moved below the cloth rolling sleeve and above the cloth rolling plug plate; (3) first cloth rolling, after the cloth rolling plug plate is controlled to move upward above the cloth rolling sleeve, the cloth rolling plug plate is controlled to move above the inverted L-shaped section along the direction close to the cloth rolling sleeve, and the cloth rolling sleeve is appropriately moved along the direction close to the cloth rolling plug plate to move the end of the cloth to the bottom of the cloth rotating cylinder; (4) second cloth rolling, the cloth rotating cylinder is extended, the rotating block presses the cloth downward and rotates to bring the cloth edge between the L-shaped section and the inverted L-shaped section to complete the cloth rolling; (5) core feeding, the hard core cloth is conveyed into the cloth rolling sleeve through the core feeding sleeve connected with the rotating channel; (6) cloth feeding and edge alignment, finally, the entire cloth rolling support moves forward along the cloth conveying direction to send the hem into the subsequent sewing machine for sewing, and the edge position state of the cloth rolled into the cloth rolling sleeve is detected by the electric eye, and the opposite edge roller is controlled to deflect to adjust the position of the cloth edge.

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