Dual-head rotary hemming machine and hemming method therefor

Abstract

Disclosed in the present invention are a dual-head rotary hemming machine and an hemming method therefor. The dual-head rotary hemming machine comprises a frame, wherein the frame is provided with a working table top formed by connecting an hemming table top, a length-determining and label-delivery table top and an hemming table top which are linearly distributed, wherein a feeding device and a label-delivery device are respectively arranged on two opposite sides of the length-determining and label-delivery table top; a fabric-dragging and length-determining device is arranged between the feeding device and the label-delivery device; two hemming devices are respectively arranged on transverse opposite sides of the two hemming table tops; and a rotary fabric-dragging device is movably arranged between each hemming table top and the length-determining and label-delivery table top, and is configured to drag fabric to the hemming table top and cooperate with the hemming device to rotationally hem the fabric; and two fabric-receiving devices are respectively arranged on two sides of the feeding device and are located on longitudinal sides of the hemming table tops, and are configured to receive the fabric. The present invention automatically completes hemming of two fabrics, has high processing efficiency, occupies a small area, and can be used for processing large-size fabric; in addition, the hemmed fabric is free of rough-selvedge exposure.

Description

Double-head rotary hemming machine and hemming method thereof Technical Field

[0001] The invention belongs to the technical field of sewing machine manufacturing, and in particular relates to a double-head rotary hemming machine for towels and an hemming method thereof. Background Art

[0002] Towels are essential items in people's daily life. In daily life, the edges of towels are easy to come off, so the edges of towels need to be hemmed to increase the service life of towels. In towel production, after the towel blanks are cut and processed, workers usually manually hem the towels with an hemming machine, and then put the hemmed towels into the collection for corresponding collection and packaging.

[0003] In order to solve the problem of low production efficiency caused by manual processing, many towel hemming machines for hemming the four sides of towels have been manufactured. However, most of the current towel hemming machines use a single towel for hemming processing. Such production efficiency can no longer meet existing needs. Although two hemming machines can be assembled together to realize the synchronous hemming processing of multiple towels, such a device will cause it to occupy a large area, and the problem of small processing size of towels during the simultaneous hemming processing cannot be solved.

[0004] In addition, after the four sides of the towel are sewn and hemmed, some burrs will still be exposed at the final edge, resulting in a high defective rate of the product and failing to meet actual production and processing needs. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a double-head rotary edge wrapping machine, which occupies a small area, can automatically and efficiently wrap two fabrics, and the processing size of the fabric is large. At the same time, the fabric will not have any burrs exposed when the edge is wrapped.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a double-head rotary hemming machine, comprising:

[0007] A frame, wherein the frame has a work surface, wherein the work surface is formed by connecting a linearly distributed edge-wrapping surface, a fixed-length label-delivering surface, and an edge-wrapping surface;

[0008] The feeding device and the label delivery device are respectively arranged on opposite sides of the fixed-length label delivery table;

[0009] The cloth-dragging and length-fixing device is arranged between the feeding device and the label-delivering device, and is used to drag the fabric delivered by the feeding device to the fixed-length label-delivering table to fix the length, and then drag it to the label-delivering device to be labeled;

[0010] An edge binding device, wherein two edge binding devices are arranged in the frame, and the two edge binding devices are respectively located on the laterally opposite sides of the two edge binding tables;

[0011] The rotary mopping device is movably arranged between the edge binding table and the fixed-length label delivery table, and is used to drag the fabric after the fixed-length and label delivery on the fixed-length label delivery table to the edge binding table to cooperate with the edge binding device to perform rotary edge binding on the fabric;

[0012] The two material collecting devices are respectively arranged on one side of the edging table, and are used to collect the finished products sent out by the rotating mopping device on the edging table.

[0013] Furthermore, the mop length fixing device includes a cloth pressing assembly, a shearing assembly, a pressing assembly and a mop clamping assembly; the cloth pressing assembly is arranged on the fixed-length label delivery table; the rear end of the cloth pressing assembly is provided with a shearing assembly for cutting the fabric;

[0014] A pressing assembly is provided at the rear end of the shearing assembly, and the pressing assembly includes a pressing block that can be raised and lowered by a pressing cylinder; the mop clamp assembly can move longitudinally on the fixed-length label delivery table to drag the fabric from the pressing assembly to the fixed-length label delivery table.

[0015] Furthermore, the shearing assembly includes a shearing bracket that can be moved laterally by a laterally movable module, and the shearing bracket is provided with a shearing knife that can be rotated by a shearing motor.

[0016] Furthermore, the shearing assembly includes:

[0017] base;

[0018] An ultrasonic module is provided on the base;

[0019] a cloth cutting assembly disposed on the base and located above the ultrasonic module, the cloth cutting assembly comprising a roller with a cutting portion provided on its circumference; wherein the cloth cutting assembly is driven by a driving mechanism to perform eccentric motion above the ultrasonic module, and when the cloth cutting assembly moves to a certain position, it cooperates with the ultrasonic module to cut the fabric located above the ultrasonic module;

[0020] The feeding table is located at the front end of the base and is used to transfer the fabric to between the ultrasonic module and the cloth cutting component.

[0021] Furthermore, the cutting portion includes a strip cutting knife arranged along the length direction of the roller and on the circumference of the roller, and an arc-shaped cutting knife extends to both ends of the strip cutting knife, and the two arc-shaped cutting knives on the same side are in a "human" shape, wherein the strip cutting knife and the arc-shaped cutting knife cooperate to cut the fabric above the ultrasonic module into two pieces, and cut the two corners of the two pieces of fabric into rounded corners.

[0022] Furthermore, the cutting portion includes a cutting knife that is triangular, trapezoidal or circular and is arranged along the circumference of the roller.

[0023] Furthermore, the driving mechanism includes a power motor, and the power motor drives the cloth cutting assembly to rotate eccentrically via a cam.

[0024] Furthermore, the hemming device includes:

[0025] A sewing machine is installed on a lateral side of the hemming table, and a sewing table is provided below the head of the sewing machine;

[0026] A discharge assembly is provided on one side of the sewing machine and is used to transfer the hemming strips to the sewing table;

[0027] A forming pull cylinder is arranged at the rear of the discharge assembly, and an opening is provided on the forming pull cylinder, wherein the discharge assembly drives the edge strip to be transferred to the forming pull cylinder and then to the sewing table;

[0028] A cutting assembly is located between the discharging assembly and the forming pull cylinder and is used to cut off the edge strips;

[0029] A folding component is provided on one side of the opening and is used to fold the edge strip located in the opening;

[0030] A shaping component is installed on the folding component to press and shape the folded portion of the edge strip after it is folded by the folding component;

[0031] A pressing assembly is provided on one side of the folding assembly, and is used to press the front end of the edge strip tightly. The pressing assembly includes a pressing strip that can move forward and backward and up and down by a pressing cylinder and a lifting cylinder.

[0032] The trimming and cutting knife is arranged on the side of the sewing machine opposite to the discharge assembly, and is used for trimming the fabric and cutting off the front end area of ​​the hemming strip.

[0033] Furthermore, the folding assembly includes a pushing cylinder; the pushing cylinder pushes the rotating shaft to rotate on the positioning seat, and a connecting block is provided on the rotating shaft. The top of the connecting block extends upward to the top of the pushing cylinder, and the connecting block is provided with a folding plate that is inclined to the opening.

[0034] Furthermore, the shaping component includes a shaping cylinder arranged at the upper end of the folding component, and the shaping cylinder drives the pressing component to move forward to the opening of the forming pull cylinder, wherein the pressing component is arranged relatively parallel to the opening.

[0035] Furthermore, the rotary mop device includes a rotary mop bracket that can move horizontally and vertically above the work surface through a synchronous wheel slide assembly and a longitudinal sliding module; the rotary mop bracket is provided with a rotary motor that can move up and down on the rotary mop bracket through a downward cylinder, and the rotary motor drives the rotary pressure plate to rotate above the work surface.

[0036] Furthermore, a plurality of pins are provided through the rotary pressure plate, and the lower surfaces of the plurality of pins are located in the same horizontal plane.

[0037] Furthermore, a pressure plate capable of performing up and down buffering via elastic components is provided around the rotating pressure plate, and the lower surface of the pressure plate is lower than the lower surface of the rotating pressure plate.

[0038] Furthermore, an adsorption mechanism is provided inside the side of the material receiving device on the edging table, wherein the adsorption mechanism is used to adsorb the finished products delivered by the rotating mop device.

[0039] Furthermore, two brushes are provided on the side of the material receiving device that are arranged opposite to each other and can be raised and lowered by adjusting the cylinder. The brushes are distributed along the length direction of both sides of the fabric, and the distance between the two brushes is less than the width of the fabric; wherein a height is left between the brushes and the material receiving device for the fabric to enter.

[0040] A hemming method for a double-head rotary hemming machine comprises the following steps:

[0041] The S1 feeding device delivers the fabric to the mop length fixing device;

[0042] The S2 cloth clamp assembly drags the fabric onto the fixed-length label delivery table to fix its length and then cuts it by the shear assembly;

[0043] The S3 mop clamp assembly sends the cut fabric to the labeling device for labeling;

[0044] Any idle rotary mop device on both sides of S4 sends the fabric to the corresponding edge binding table. When the fabric reaches the corresponding edge binding table, the next fabric can be sent to the other edge binding table by another rotary mop device for edge binding operation.

[0045] The S5 rotary mopping device cooperates with the trimming and cutting knife to round the four edges of the fabric;

[0046] S6. After the hemming device completes the hemming of the four sides of the fabric, the trimming and cutting knife cuts off the reserved area at the front end of the hemming strip;

[0047] S7. The rotary mopping device delivers the fabric to one side of the receiving platform, and the receiving robot delivers the fabric to the receiving platform.

[0048] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0049] 1. In the present invention, the feeding device feeds the fabric into the mop length fixing device. After the mop length fixing device fixes the fabric to length and delivers the fabric on the fixed-length delivery table, the rotating mop device drags the fabric to the hemming table located on both sides of the fixed-length delivery table. The fabric is hemmed by the hemming device laterally arranged on one side of the hemming table, and the hemming operation of multiple fabrics is completed fully automatically with high production efficiency.

[0050] 2. The hemming system consisting of two hemming tables and a hemming device is placed horizontally based on the position of the feeding device, and the feeding device and the receiving device are located on the same side, so that the overall structure of the equipment is compact and occupies a small area; at the same time, since the hemming tables and the hemming devices are horizontally distributed on both sides of the fixed-length standard feeding table, large-sized fabrics can be placed on the hemming table for hemming processing.

[0051] 3. The folding component and the shaping component in the hemming device cooperate with each other to fold the burrs at the tail of the hemming strip into the inside of the hemming strip, so that no burrs will be exposed when the hemming strip is closed.

[0052] 4. For fabrics with a size of about 40cm x 40cm, the fabric can be cut twice by using the strip cutter and four curved cutters on the cutter assembly in conjunction with the ultrasonic module to form a fabric with rounded corners. No subsequent trimming knife is required for rounding the corners, which reduces processing time and improves processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The technical solution of the present invention will be further described below with reference to the accompanying drawings:

[0054] FIG1 is a schematic diagram of a three-dimensional structure of an embodiment of the present invention;

[0055] FIG2 is a top view of an embodiment of the present invention;

[0056] FIG3 is a schematic diagram of the three-dimensional structure of a feeding device according to an embodiment of the present invention;

[0057] FIG4 is a schematic diagram of the three-dimensional structure of the cooperation of the edge binding table, the mop length fixing device and the label feeding device in one embodiment of the present invention;

[0058] FIG5 is a schematic structural diagram of a shearing assembly and a cloth pressing assembly connected in one embodiment of the present invention;

[0059] FIG6 is a schematic diagram of the three-dimensional structure of the assembly of the shearing assembly and the mop clamp assembly in another embodiment of the present invention;

[0060] FIG7 is a schematic structural diagram of the cloth cutting assembly, ultrasonic module and driving mechanism in FIG6 when assembled;

[0061] FIG8 is a schematic diagram of the three-dimensional structure of a cloth cutting assembly in another embodiment of the present invention;

[0062] FIG9 is an enlarged view of portion A in FIG8 ;

[0063] FIG10 is a schematic diagram of a cloth cutting assembly cutting fabric in another embodiment of the present invention;

[0064] FIG11 is a schematic diagram of a roller for cutting out triangular fabrics and the cut fabrics in one embodiment of the present invention;

[0065] FIG12 is a schematic diagram of a roller for cutting out trapezoidal fabric and the fabric after cutting in one embodiment of the present invention;

[0066] FIG13 is a schematic diagram of a roller for cutting out circular fabrics and the cut fabrics in one embodiment of the present invention;

[0067] FIG14 is a schematic diagram of the three-dimensional structure of a rotary mopping device according to an embodiment of the present invention;

[0068] FIG15 is a partial schematic diagram of the assembly of the rotating pressing plate and the rotating motor according to one embodiment of the present invention;

[0069] FIG16 is a schematic diagram of a partial structure of a rotary mopping device according to another embodiment of the present invention;

[0070] FIG17 is a schematic diagram of a partial structure of a rotary mopping device according to another embodiment of the present invention;

[0071] FIG18 is a partial schematic diagram of the cooperation between the hemming table with vacuum adsorption and the rotating pressing plate in one embodiment of the present invention;

[0072] FIG19 is a partial schematic diagram of the cooperation between the edge-wrapped table with a brush and the rotating pressure plate in one embodiment of the present invention;

[0073] FIG20 is a schematic diagram of the three-dimensional structure of an edge binding device according to an embodiment of the present invention;

[0074] FIG21 is a schematic diagram of the three-dimensional structure of FIG20 omitting the sewing machine and trimming knife;

[0075] FIG22 is a schematic diagram of the three-dimensional structure from another perspective of FIG21 after omitting the forming cylinder;

[0076] FIG23 is a schematic diagram of the three-dimensional structure of FIG22 from another perspective;

[0077] FIG24 is a schematic diagram of the three-dimensional structure of the folding component, the shaping component and the forming pull cylinder when assembled in an embodiment of the present invention;

[0078] FIG25 is a partial schematic diagram of the assembly of the hemming device and the frame according to one embodiment of the present invention;

[0079] FIG26 is a schematic diagram of the three-dimensional structure of a material receiving robot in one embodiment of the present invention;

[0080] FIG27 is a schematic structural diagram of a double-head rotary hemming machine according to another embodiment of the present invention;

[0081] FIG28 is a schematic diagram of the layout structure of a double-head rotary hemming machine in another embodiment;

[0082] FIG29 is a schematic diagram of the layout structure of a double-head rotary hemming machine in another embodiment;

[0083] FIG30 is a schematic diagram of the layout structure of a double-head rotary hemming machine in another embodiment;

[0084] Among them: frame 1, feeding device 2, label feeding device 3, mop length fixing device 4, hemming device 5, rotary mop device 6, receiving device 7, feeding seat 20, feeding wheel 21, active feeding wheel 22, pressing roller 23, feeding motor 24, auxiliary roller 25, base 31, ultrasonic module 32, cloth cutting assembly 33, driving mechanism 34, feeding table 35, moving block 37, adjusting bolt 38, cloth pressing assembly 40, shearing assembly 41, pressing assembly 42, mop clamp assembly 4 3. Sewing machine 50, sewing table 51, discharge assembly 52, forming pull cylinder 53, opening 530, cutting assembly 54, folding assembly 55, shaping assembly 56, pressing assembly 57, trimming knife 58, synchronous wheel slide assembly 60, rotating mop bracket 61, lowering cylinder 62, rotating motor 63, rotating pressure plate 64, longitudinal sliding module 65, connecting shaft 66, boss 67, connecting seat 68, connecting cavity 69, groove 690, locking member 691, material receiving platform 70 , receiving robot 71, fabric 80, sliding plate 90, slide rail module 91, edge table 100, fixed length label delivery table 101, roller 330, cutting knife 331, arc cutting knife 332, cutting knife 333, power motor 340, cam 341, horizontal movement module 410, shearing bracket 411, shearing motor 412, shearing knife 413, pressing cylinder 420, pressing block 421, pressing cylinder 570, lifting cylinder 571, pressing strip 572, unloading wheel 5 20. Feeding pull cylinder 521, power transmission port 522, power roller 523, transverse movement cylinder 524, pushing cylinder 550, rotating shaft 551, positioning seat 552, connecting block 553, folding plate 534, shaping cylinder 560, pressing component 561, pin 640, elastic component 641, pressing plate 642, adsorption mechanism 643, adjusting cylinder 644, brush 645, material receiving bracket 710, material receiving cylinder 711, material receiving support plate 712, and material receiving clamp 713. DETAILED DESCRIPTION

[0085] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0086] The present invention provides a double-head rotary hemming machine to solve the problems in the prior art of simultaneously hemming two fabrics, such as the large footprint of the equipment, the inability to be suitable for hemming two large-sized fabrics, the low production efficiency, and the exposed burrs of the fabrics at the end of hemming.

[0087] For ease of understanding, the specific process in the embodiment of the present application is described below, please refer to Figures 1-2. In the embodiment of the present application, a double-head rotary hemming machine includes a frame 1, a feeding device 2, a label feeding device 3, a mopping and fixing length device 4, an hemming device 5, a rotary mopping device 6 and a receiving device 7; the frame 1 is provided with a work surface, and the work surface is composed of a linearly distributed hemming table 100, a fixed-length label feeding table 101 and an hemming table 100 spliced ​​together; the feeding device 2 and the label feeding device 3 are respectively arranged on the opposite sides of the fixed-length label feeding table 10, which in this embodiment are the upper and lower sides of the fixed-length label feeding table 10.

[0088] The cloth-fixing length device 4 is arranged between the feeding device 2 and the label-delivering device 3, and is used to drag the fabric delivered by the feeding device 2 to the fixed-length label-delivering table 101 for fixing the length, and then send the fixed-length fabric to the label-delivering device 3 for labeling. The subsequent label will be sewn onto the fabric together with the edging strip.

[0089] The two edging devices 5 are arranged in the frame 1, and the two edging devices 5 are respectively arranged on the opposite horizontal sides of the two edging tables 100. In this embodiment, one edging device 5 is located on the horizontal left side of the left edging table 100, and the other edging device 5 is located on the horizontal right side of the right edging table 100. The edging devices 5 and the corresponding edging tables 100 are distributed horizontally based on the feeding device 2.

[0090] The rotary mopping device 6 is movably arranged between the edging table 100 and the fixed-length label delivery table 101, and is used to drag the fabric from the fixed-length label delivery table 101 to the edging table 100 and then cooperate with the edging device to perform rotary edging on the fabric. At the same time, the edged fabric is also delivered to the side of the subsequent material receiving device 7 to facilitate the material receiving of the material receiving device 7.

[0091] The two material receiving devices 7 are respectively arranged on one side of two corresponding edge-wrapping tables 100 for receiving finished products.

[0092] In the double-head rotary edge wrapping machine of the present invention, the mopping length fixing device 4 fixes the length of the fabric sent out from the feeding device 2 on the fixed-length label delivery table and delivers the label, and then the rotary mopping device 6 drags the fabric to the edge wrapping table located on both sides of the fixed-length label delivery table, and the fabric is edged by the edge wrapping device 5 horizontally arranged on one side of the edge wrapping table 100, and the edge wrapping operation of multiple fabrics after cutting is completed fully automatically, and finally the material is automatically collected.

[0093] At the same time, since the two hemming tables 100 and the two hemming devices 5 are formed as a whole and are placed horizontally based on the position of the feeding device 2, the double-head hemming machine has a compact structure and the equipment occupies a small area; in addition, since the hemming table and the hemming device are located on both sides of the fixed-length label feeding table 101, the processing position of the hemming device and the hemming table are vertically arranged, and the hemming table and the fixed-length label feeding table are vertically parallel, so that large-sized fabrics can be placed on the hemming table for rotation, and the processing range is wide.

[0094] In this embodiment, based on Figure 3, the feeding device 2 includes a feeding seat 20, and the feeding seat 20 is provided with a feeding wheel 21 and an active feeding wheel 22 arranged in the front and rear. The active feeding wheel 22 is driven to rotate by a feeding motor 24, and a plurality of linearly distributed pressure rollers 23 are installed above the active feeding wheel 22. The active feeding 22 and the pressure roller 23 cooperate to transfer the fabric from the feeding wheel 21 forward to the auxiliary roller 25, and then transfer it to the subsequent mop fixed length device 4.

[0095] In this embodiment, based on Figures 4 to 5, the mop length fixing device 4 includes a cloth pressing assembly 40, a shearing assembly 41, a pressing assembly 42 and a mop clamping assembly 43; the cloth pressing assembly 40 is arranged on the fixed-length label feeding table 101 and is located at the rear end of the feeding device 2; the rear end of the cloth pressing assembly 40 is provided with a shearing assembly 41 for cutting the fabric, and the rear end of the shearing assembly 41 is provided with a pressing assembly 42 for pressing the fabric.

[0096] The pressing assembly 42 includes a pressing block 421 that can be raised and lowered by two oppositely arranged pressing cylinders 420. The two pressing blocks 421 are driven downward by the pressing cylinders 420 to press the fabric onto the fixed-length label delivery table 101. The mop clamp assembly 43 can move longitudinally on the fixed-length label delivery table 101 to drag the fabric from the pressing assembly to the rear of the fixed-length label delivery table for fixed length. The mop clamp assembly 43 is a common mechanism and will not be described here.

[0097] There are two types of shearing components 41 in this embodiment. One is a shearing bracket 411 that can be moved laterally by a laterally moving module 410 based on Figure 5. The shearing bracket is provided with a shearing knife 413 that can be rotated by a shearing motor 412. In this way, the shearing knife 413 can perform a laterally shearing operation on the fabric through the laterally moving module 410 when the shearing motor 412 rotates. This shearing component 41 only plays a shearing role.

[0098] During operation, the fabric is first transmitted from the feeding device 2 to the cloth pressing assembly 40, and then passes through the clamping assembly 42 and is dragged backward on the fixed-length label delivery table 101 by the cloth clamping assembly 43. When the length of the fabric is fixed, the cloth pressing assembly and the clamping assembly simultaneously clamp the fabric, and then the shearing knife 413 cuts the fabric. After cutting, the fabrics at both ends are fixed by the cloth pressing assembly and the clamping assembly respectively, and then the clamping assembly is released, and the cloth clamping assembly 43 continues to drag the cut fabric backward on the fixed-length label delivery table 101 to the label delivery device 3 for labeling.

[0099] The other is a shearing assembly based on Figures 6 to 10, which includes a base 31, an ultrasonic module 32, a cloth cutting assembly 33, a driving mechanism 34 and a feeding table 35; the ultrasonic module 32 is arranged on the base 31; the cloth cutting assembly 33 is also installed on the base 31 and is located above the ultrasonic module 32, and the cloth cutting assembly includes a roller 330, and the roller 330 is provided with a cutting portion arranged along the length direction of the roller; the cloth cutting assembly 33 is driven by the driving mechanism 34 to perform eccentric motion above the ultrasonic module 32, and when the cloth cutting assembly 33 moves to a certain position, it cooperates with the ultrasonic module 32 to cut the fabric above the ultrasonic module 32; the feeding table 35 is located at the front end of the base 31, and is used to transfer the fabric to between the ultrasonic module 32 and the cloth cutting assembly 33.

[0100] Based on Figures 8 to 10, in this embodiment, the cutting portion includes a linear cutting knife 331 arranged along the length direction of the roller 330 and on the circumference of the roller. The two ends of the cutting knife 331 extend to both sides with an arc-shaped cutting knife 332, and the two arc-shaped cutting knives 332 on the same side are in a "human" shape. In this way, the cutting knife 331 and the arc-shaped cutting knife 332 cooperate with each other to cut twice to cut out fabrics with rounded corners on all four sides.

[0101] In addition, a cutting knife 333 extends from each of the arc-shaped cutters 332 , and the cutting knife 333 is used to prevent the strip cutting knife 31 and the four arc-shaped cutters 32 from not cutting the fabric into two pieces.

[0102] Based on Figure 7, the driving mechanism 34 includes a power motor 340, which drives the cloth cutting assembly 33 to rotate eccentrically above the ultrasonic module 32 through the cam 341. In this way, when the cloth cutting assembly 33 is driven to rotate eccentrically by the cam 341, the cloth cutting assembly 33 does not contact the fabric in the initial state. When the cloth cutting assembly 33 rotates to a certain position, the cloth cutting assembly 33 cooperates with the ultrasonic module 32 to cut the fabric; when in contact, the cutting knife 331 cuts the middle of the fabric in a straight line, and at the same time, the four arc-shaped cutting knives 332 cut the two corners on the opposite side of the two fabrics formed after being cut by the cutting knife 331 into rounded corners.

[0103] In this embodiment, the cloth cutting assembly 33 is set on a moving block 37, and the moving block 37 moves up and down above the ultrasonic module 32 through an adjustment bolt 38 located on the base 31, so that the distance between the cloth cutting assembly 33 and the ultrasonic module 32 can be automatically adjusted, which is suitable for fabrics of different thicknesses.

[0104] Based on FIG6 to FIG10, the following is a detailed description of the process of cutting operation when the cutting knife portion is a strip cutter 331 and an arc cutter 332:

[0105] S1. The fabric flows from the feed table 35 and then enters between the cloth cutting assembly 33 and the ultrasonic module 32;

[0106] S2. The fabric is dragged backward by the mop clamp 43. During this process, the speed of the mop is constant. The rotation speed of the roller 330 determines the length of the fabric after the fabric cutting assembly 3 is cut. Relatively speaking, the faster the roller speed, the shorter the length of the cut fabric, and the slower the roller speed, the longer the length of the cut fabric.

[0107] S3. In the initial state, the front end of the fabric is cut, so the roller 330 is moving at a relatively high speed. After the mop clamp 43 drags the fabric a short distance, the roller 330 rotates eccentrically under the drive of the cam and the power motor 40, so that the slitting knife 331 and the four curved cutters 332 cooperate with the ultrasonic module 2 to cut the fabric, cutting the fabric 80 into a left fabric and a right fabric. The two corners on the opposite sides of the left and right fabrics are rounded, and the two pieces of fabric at this time are shown in Figure 10. The roller 330 then continues to drive the left fabric forward for a distance to facilitate the subsequent grabbing of the mop clamp. The right fabric is manually removed from the mop clamp, and then the mop clamp 43 clamps the left fabric again.

[0108] S4. While the mop clamp 43 is dragging the left side fabric backward, the eccentrically moving cloth cutting component 3 cooperates with the ultrasonic module 32 to cut the fabric, thereby dividing the left side fabric into two fabrics again. In this way, a fabric to be processed later is cut out. The four corners of this fabric are all rounded, thereby achieving the goal of cutting the fabric while also cutting its four corners into rounded corners. The processing is completed in one step, which is convenient for subsequent direct processing.

[0109] The shearing assembly in this embodiment can be used to directly cut the four sides of the fabric into round edges, so there is no need to use the subsequent trimming and cutting knife 58 to trim the fabric. However, since the cutting assembly in this embodiment uses an ultrasonic module for cutting, it can only be used for fabrics of about 40cmx40cm. Fabrics larger than 40cmx40cm still need to use the first shearing assembly in conjunction with the subsequent trimming and cutting knife 58 to round the corners of the fabric.

[0110] In addition, different shapes of cutters can be used to cut different fabrics, such as:

[0111] Based on FIG11 , in this embodiment, a triangular cutter is provided on the circumference of the roller 330 and along the length direction of the roller 330 , so that a corresponding triangular-shaped fabric is finally cut out from the fabric.

[0112] Based on FIG12 , in this embodiment, a trapezoidal cutter is provided on the circumference of the roller 330 and arranged along the length direction of the roller, so that a corresponding trapezoidal-shaped fabric is finally cut out from the fabric.

[0113] Based on FIG13 , in this embodiment, a circular cutter is provided on the circumference of the roller 330 and arranged along the length direction of the roller, so that a corresponding circular-shaped fabric is finally cut out from the fabric.

[0114] Of course, in actual situations, cutters of different shapes can be designed to cut fabrics of different patterns, which will not be described here.

[0115] In addition, in this embodiment, the label delivery device can be divided into two methods for delivering labels. One is the conventional label delivery method, that is, the label is placed on the top of the fabric through the label delivery device 3, and then the rotating mop device 6 is used to move it to the edge device 5 for sewing with the edge strip; the other method is to place the label under the fabric, and then the rotating mop device 6 is used to move it to the edge device 5 for sewing with the edge strip. The different methods are to meet the requirements of different customers for label position.

[0116] In this embodiment, based on Figures 1 and 14, the rotary mop device 6 includes a rotary mop bracket 61 that can move horizontally and vertically above the work surface through a synchronous wheel slide assembly 60 and a longitudinal sliding module 65; the rotary mop bracket 61 is provided with a rotary motor 63 that can move up and down on the rotary mop bracket 61 through a downward cylinder 62, and the rotary motor 63 drives the rotary pressure plate 64 to rotate above the work surface, so as to press the fabric on the work surface 10 and rotate it 360°.

[0117] Specifically, the rotating pressure plate 64 in this embodiment is in the shape of a long strip. The rotating pressure plate 64 is moved down to the top of the fabric on the work surface 10 by the downward cylinder 62 to press the fabric. At the same time, the rotating motor 63 drives the fabric to rotate 360° on the edging table 100 through the rotating pressure plate 64, which is used to cooperate with the subsequent edging device 5 to perform edging processing on the fabric.

[0118] In addition, based on Figure 15, in order to meet the needs of different products, it is necessary to be able to quickly replace the rotating pressure plate 64, so a connecting shaft 66 is added to the rotating shaft of the rotating motor 63, and the connecting shaft 66 is provided with a synchronously rotating boss 67 arranged coaxially, and a connecting seat 68 is provided on the upper surface of the rotating pressure plate 64, and a connecting cavity 69 for adapting the boss 67 is provided in the connecting seat, and a groove 690 is provided through the lateral position of the connecting cavity; the boss 67 is provided in the connecting cavity 69, and a plurality of locking members 691 are provided in the circumferential direction of the connecting cavity 69, and the locking members 691 pass through the groove 690 to fix the boss 67 in the connecting cavity 69.

[0119] When disassembling, just take out the locking piece 691 from the groove 690 first, and then take away the connecting seat and the rotating pressure plate together; when installing, align the connecting cavity of the rotating pressure plate with the boss and insert it, and then use the locking piece to install the boss in the connecting cavity, thereby realizing the rapid replacement and installation of rotating pressure plates of different specifications, and the operation is convenient and fast.

[0120] In addition, in order to prevent the rotating pressure plate 64 from sticking to the fabric when it is separated from the fabric, as the rotating pressure plate moves with the fabric as it is pressed down, multiple components are added to the rotating pressure plate 64 or the edging table 101 to prevent the rotating pressure plate 64 from sticking to the fabric when it is separated.

[0121] Based on Figure 16, in this embodiment, a plurality of pins 640 are set through the rotating pressure plate 64, and the lower surfaces of the plurality of pins 640 are located on the same horizontal plane; when working, the rotating pressure plate 64 presses the fabric and then moves the position of the fabric. When the rotating pressure plate 64 moves up to remove the fabric, since there is point contact between the pins 640 and the fabric, the fabric can be easily separated from the pins, and the fabric will not stick to the pins 640.

[0122] Based on Figure 17, in this embodiment, a pressure plate 642 that can be buffered up and down by an elastic component 641 is provided around the rotating pressure plate 64, and the lower surface of the pressure plate 642 is lower than the lower surface of the rotating pressure plate 64. In this way, when the rotating pressure plate 64 presses the fabric, the fabric is first contacted by the pressure plate that can be buffered up and down by the elastic component, and then contacted by the rotating pressure plate 64, and finally the pressure plate and the rotating pressure plate 64 press the fabric in the same plane; when the rotating pressure plate 64 moves up and separates from the fabric, the rotating pressure plate first separates from the fabric. At this time, the pressure plate continues to press the fabric due to the action of the elastic component. When the rotating pressure plate rises again, the pressure plates around it are separated from the fabric, so that the fabric can be easily separated from the rotating pressure plate, which is convenient for removing the material. The elastic component 641 used in this embodiment is a spring, but it can also be other elastic components.

[0123] Based on Figure 18, in this embodiment, an adsorption mechanism 643 is provided inside the edging table 100 on one side of the material receiving device for adsorbing the fabric; in this way, when the rotating pressing plate 64 transfers the fabric to the edging table, the adsorption mechanism on the edging table automatically adsorbs the fabric, and then the rotating pressing plate 64 moves up, and the fabric can be easily detached from the rotating pressing plate 64.

[0124] Based on Figure 19, in this embodiment, two brushes 645 that can be raised and lowered by adjusting the cylinder 644 are provided on the edging table 100 on one side of the material receiving device. A gap is left between the brush 645 and the edging table 100, and the height of the gap is greater than the thickness of the fabric, so that the fabric can enter between the brush and the edging table. Specifically, the two brushes 645 are distributed along the length direction of both sides of the fabric, and the distance between the two brushes 645 is less than the width of the fabric.

[0125] In this way, when the rotary pressing plate 64 presses the fabric and moves, the fabric is moved between the gap between the brush 645 and the edging table 100, and then the rotary pressing plate 64 moves up and resets. However, due to the presence of the brushes on both sides of the fabric, the brushes prevent the fabric from moving upward, so that the fabric can be easily separated from the rotary pressing plate 64.

[0126] In this embodiment, based on Figures 20 to 24, the hemming device 5 includes a sewing machine 50, a discharge assembly 52, a forming pull cylinder 53, a material cutting assembly 54, a material folding assembly 55, a shaping assembly 56, a material pressing assembly 57 and a trimming and cutting knife 58; the sewing machine 50 is installed on a lateral side of the hemming table 100, and a sewing table 51 for sewing is provided under the head of the sewing machine 50.

[0127] The discharge component 52 is arranged on the opposite side of the sewing machine 50, and is used to transmit the edging strip on the previous sewing table 51. The discharge component 52 includes a discharge wheel 520 for placing the edging strip, a feed pull cylinder 521 and a power roller 523 arranged opposite to each other. The feed pull cylinder 521 is a flat square frame. The edging strip passes through the feed pull cylinder 521 when being transmitted. A square power transmission port 522 is opened on the side of the feed pull cylinder 521 opposite to the feed pull cylinder 521; the power roller 523 is driven to rotate by a power motor, and the power roller 523 can be close to the edging strip in the power transmission port 522 through the transverse cylinder 524.

[0128] When the edging strip needs to be transferred, the edging strip enters the feeding pull cylinder 521 from the discharge wheel 520, and then the power roller 523 contacts the edging strip at the power transmission port 522 under the drive of the transverse cylinder 524, and then the rolling force of the power roller 523 is used to drive the edging strip at the power transmission port to be transferred forward, providing a power source for the transmission of the edging strip.

[0129] The forming pull cylinder 53 is arranged behind the feeding pull cylinder 521, and is used to connect the edging strips sent out by the feeding pull cylinder 521. An opening 530 is opened on the forming pull cylinder 53 on the same side as the power transmission port 522; in addition, in order to allow the edging strips to be smoothly transmitted in the forming pull cylinder 53, a plurality of blowing tubes (not shown in the figure) are also provided in the forming pull cylinder 53 to guide the edging strips in the forming pull cylinder, thereby accurately driving the edging strips to be transmitted forward to the sewing table 51 for sewing.

[0130] The cutting component 54 is arranged between the discharging component 52 and the forming pull cylinder 53, and is used to cut the edge strip. The cutting component 54 is a commonly used cutting mechanism and is not described here.

[0131] The folding material assembly 55 is arranged on the opposite side of the opening 530, and the folding material assembly 55 includes a pushing cylinder 550, and the pushing cylinder 550 pushes the rotating shaft 551 to rotate on the positioning seat 552, and a connecting block 553 is provided on the rotating shaft 551, and the top of the connecting block extends upward to the top of the pushing cylinder, and the connecting block 533 is provided with a folding plate 534 which is inclined to the opening, so that when the pushing cylinder 550 pushes, the folding plate 534 can enter the edging strip at the opening 530 at an inclined angle to fold the edging strip.

[0132] The shaping component 56 includes a shaping cylinder 560 arranged at the upper end of the folding component 55. The shaping cylinder 560 drives the pressing component 561 to move forward to the opening of the forming pull cylinder. The pressing component 561 and the opening are relatively parallel. The side of the pressing component 561 relative to the opening is flat, so that the folded edge strip can be effectively flattened and shaped.

[0133] In addition, the pressing component 561 is made of materials such as foam, so that the edge strip will not be pressed too tightly after being shaped and folded, causing it to be unable to be transported.

[0134] Based on Figure 21, the pressing assembly 57 is arranged on one side of the folding assembly 55 to press the front end of the edging strip and wait for the subsequent edging processing of the fabric. Specifically, the pressing assembly 57 in this embodiment includes a pressing strip 572 that can move forward and backward and up and down by the pressing cylinder 570 and the lifting cylinder 571, so that the pressing strip 572 can quickly press the front end of the edging strip under the pressing cylinder 570 and the lifting cylinder 571.

[0135] The trimming and cutting knife 58 is arranged on the side of the sewing machine 50 opposite to the discharge assembly 52, and is used to trim the fabric and cut off the front end area of ​​the edging strip.

[0136] Among them, when the edging strip is sewn to the four sides of the fabric, the front end area of ​​the edging strip will be cut off by the trimming knife 58. This is because if the front end area of ​​the edging strip is directly used as the starting point for sewing the edging, the sewing needle of the sewing machine will produce an empty seam phenomenon, resulting in a leaky section in the edging.

[0137] Before work, the front end of the edging strip is pressed by the pressing strip 572. During edging, the pressing strip 572 loosens the edging strip. The discharge assembly 52 transfers the edging strip to the forming pull cylinder 53 for forming and then sends it to the sewing table 51. Then, the edging operation on the four sides is carried out in conjunction with the fabric driven by the rotating mop device 6.

[0138] When the stitching is completed and the edging strip needs to be trimmed, the cutting component 54 first cuts the edging strip to a fixed length, and then the pushing cylinder 550 drives the rotating shaft 551 to rotate, so that the inclined folding plate 534 moves in a circular arc-shaped rotation trajectory to the edging strip located at the opening 530, and the folding plate 534 is inclined to the edging strip, and then the folding plate 534 continues to rotate, so that the cut end of the edging strip at the opening is folded in half.

[0139] Then, the pressing component 561 is driven by the shaping cylinder 560 to approach the folded edging strip in the opening 530 until the pressing component 561 flattens the folded edging strip and folds it into shape. In this way, when the folded edging strip at the tail continues to be transmitted out of the forming pull cylinder 53, the raw edge when the edging strip is cut by the cutting component 54 is folded into the inside of the edging strip, and the sewing machine sews the tail of the edging strip to the last edge of the fabric, and no raw edge is exposed when the edging is finally finished.

[0140] In addition, in this embodiment, based on Figures 1 and 25, the two hemming devices 5 are detachably mounted on a sliding plate 90, and the sliding plate is slidably arranged in the frame through a slide rail module 91. In this way, during actual use, the entire hemming device 5 is slid outward by controlling the slide rail module 91, and then the sewing machine in the hemming device is replaced to meet different sewing needs. In addition, the sewing machine in this embodiment is a stretch sewing machine. This is because the structure of the stretch sewing machine is relatively different from that of an ordinary sewing machine, and it has enough space for other components in the hemming device to be installed, while other ordinary sewing machines do not have such a structure.

[0141] In this embodiment, based on Figure 26, the material receiving device 7 includes a material receiving platform 70 and a material receiving robot 71; the material receiving platform 70 is arranged on one side of the edging platform 100, and the material receiving robot 71 includes a material receiving bracket 710 that can slide between the material receiving platform and the edging table, and the material receiving bracket 710 is provided with a material receiving support plate 712 that can move up and down by a material receiving cylinder 711, and the material receiving support plate 712 is provided with material receiving claws 713 around it.

[0142] During operation, the four receiving jaws 713 move downward under the drive of the receiving cylinder 711, and then the receiving jaws 713 grab the hemmed fabric and finally send it to the corresponding receiving platform 70 to complete the finished product receiving operation.

[0143] Refer to Figures 27 to 30, which list different layouts of this hemming machine:

[0144] 1. The two receiving devices 7 are disposed on either side of the feeding device 2 and on the same longitudinal side of the hemming table 100; 2. The two receiving devices are located on the side of the work surface opposite the feeding device; 3. The two receiving devices are located on either side of the two hemming devices; 4. One of the two receiving devices 7 is located on the side of the hemming device, and the other is located on the side of the label feeding device.

[0145] Of course, the distribution mode of the material receiving device 7 is not limited to this, and other various modes, as long as they can cooperate with the edge wrapping device 5 to receive the material, are within the protection scope of the present invention.

[0146] Among them, in the first distribution method, the feeding position 2 and the receiving position 7 are installed on the same side, which is convenient for the actual discharging and receiving of materials, and can also make the overall structure of the edge wrapping machine more compact, which is a better distribution method.

[0147] The present invention also discloses a hemming method of a double-head rotary hemming machine, comprising the following steps:

[0148] S1. The feeding device 2 feeds the fabric into the mop length fixing device 4, and the fabric passes through the cloth pressing assembly and the pressing assembly in sequence;

[0149] S2. The cloth clamp assembly 43 clamps the front end of the fabric and drags it to the fixed-length standard delivery table 101 for fixed length, and then cut by the shear assembly. When the fabric is cut, the pressing assembly 40 and the pressing assembly 42 press the fabric tightly;

[0150] S3. The mop clip assembly sends the cut fabric to the labeling device for labeling;

[0151] S4. Either side of the rotary mop device 6 to send the fabric to the corresponding edge table 100. When the fabric reaches the corresponding edge table, the next fabric can be sent by another rotary mop device 6 to another edge table for edge operation;

[0152] S5. If the shearing assembly is a cutter, the rotary mopping device 6 cooperates with the trimming blade 58 to round the edges of the fabric. If the shearing assembly is an ultrasonic cutting module, trimming the fabric with the trimming blade 58 is not required. The shearing assembly cuts the edge strip to a fixed length longer than the hemming length to reserve an area at the front end of the edge strip for shearing by the trimming blade.

[0153] S6. The hemming device 5 performs hemming operations on the four sides of the fabric. After the hemming is completed, the hemming strip is exposed without burrs, and then the trimming cutter cuts off the reserved area at the front end of the hemming strip;

[0154] S7. The rotating mopping device 6 delivers the fabric to one side of the material receiving platform, and the material receiving robot delivers the fabric to the material receiving platform.

[0155] The present invention also discloses another hemming method of a double-head rotary hemming machine. The difference between this method and the above method is that: in step S6, when performing the hemming operation, at the finishing stage, a long hemming strip is left, and the other end of the long hemming strip is subsequently manually sewn to the fabric to form a hook, thereby generating another product, and the generated products are diversified.

[0156] In summary, this hemming method can quickly and effectively automatically perform synchronous cutting and hemming operations on multiple fabrics. The whole process is automated, the processing efficiency is high, and the feeding and receiving of materials are convenient and practical.

[0157] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A double-head rotary hemming machine, characterized in that: include: A frame, wherein the frame has a work surface, and the work surface is formed by connecting a linearly distributed edge-wrapping surface, a fixed-length label-delivering surface, and an edge-wrapping surface; The feeding device and the label conveying device are respectively arranged on two opposite sides of the fixed-length label conveying table; The cloth-dragging and length-fixing device is arranged between the feeding device and the label-feeding device, and is used to drag the fabric delivered by the feeding device to the fixed-length label-feeding table to fix the length, and then drag it to the label-feeding device for labeling; An edge binding device, wherein two edge binding devices are arranged in the frame, and the two edge binding devices are respectively located on the lateral opposite sides of the two edge binding table surfaces; A rotary mopping device is movably disposed between the edge binding table and the fixed-length label delivery table, and is used to drag the fabric after the fixed-length label delivery on the fixed-length label delivery table to the edge binding table to cooperate with the edge binding device to perform rotary edge binding on the fabric; A material collecting device, wherein the two material collecting devices are respectively arranged on one side of the edge binding table, and are used to collect the finished products delivered by the rotating mopping device on the edge binding table.

2. The double-head rotary hemming machine according to claim 1, characterized in that: The mop length-fixing device comprises a cloth pressing assembly, a shearing assembly, a pressing assembly and a mop clamping assembly; the cloth pressing assembly is arranged on the fixed-length label delivery table; the rear end of the cloth pressing assembly is provided with a shearing assembly for shearing fabrics; A clamping assembly is provided at the rear end of the shearing assembly, and the clamping assembly includes a clamping block that can be raised and lowered by a clamping cylinder; the mop clamp assembly can move longitudinally on the fixed-length label delivery table to drag the fabric from the clamping assembly to the fixed-length label delivery table.

3. The double-head rotary hemming machine according to claim 2, characterized in that: The shearing assembly comprises a shearing bracket which can be moved laterally by a laterally movable module, and a shearing knife which can be rotated by a shearing motor is arranged on the shearing bracket.

4. The double-head rotary hemming machine according to claim 2, characterized in that: The shearing assembly comprises: Base; An ultrasonic module is arranged on the base; A cloth cutting assembly is arranged on the base and located above the ultrasonic module, the cloth cutting assembly comprises a roller, and a cutting knife portion is arranged on the circumference of the roller; wherein the cloth cutting assembly is driven by a driving mechanism to make an eccentric motion above the ultrasonic module, and when the cloth cutting assembly moves to a certain position, it cooperates with the ultrasonic module to cut the fabric located above the ultrasonic module; The feeding table is located at the front end of the base and is used to transfer the fabric to between the ultrasonic module and the cloth cutting component.

5. The double-head rotary hemming machine according to claim 4, characterized in that: The cutting knife portion includes a strip cutting knife arranged along the length direction of the roller and on the circumference of the roller. An arc-shaped cutting knife extends to both ends of the strip cutting knife. The two arc-shaped cutting knives on the same side are in a "human" shape. The strip cutting knife and the arc-shaped cutting knife cooperate to cut the fabric above the ultrasonic module into two pieces, and cut the two corners of the two pieces of fabric into rounded corners.

6. The double-head rotary hemming machine according to claim 4, characterized in that: The cutter portion includes a triangular, trapezoidal or circular cutter arranged along the circumference of the roller.

7. The double-head rotary hemming machine according to claim 4, characterized in that: The driving mechanism comprises a power motor, and the power motor drives the cloth cutting assembly to rotate eccentrically via a cam.

8. The double-head rotary hemming machine according to claim 1, characterized in that: The hemming device comprises: A sewing machine, installed on a lateral side of the hemming table, with a sewing table below the head of the sewing machine; A material discharging assembly is arranged on one side of the sewing machine and is used for conveying the hemming strips to the sewing table; A forming pull cylinder is arranged at the rear of the discharge assembly, and an opening is provided on the forming pull cylinder, wherein the discharge assembly drives the edge strip to be transmitted to the forming pull cylinder and then sent to the sewing table; A cutting assembly, located between the discharging assembly and the forming pull cylinder, for cutting off the edge strip; A folding material assembly is provided at one side of the opening and is used to fold the edge strip located in the opening; A shaping component is installed on the folding component to press and shape the folded portion of the edge strip after the folding component folds the edge strip in half; A material pressing assembly is arranged on one side of the material folding assembly, and is used to press the front end of the edge strip, wherein the material pressing assembly includes a material pressing strip that can be moved forward and backward and up and down by a material pressing cylinder and a lifting cylinder; The trimming and cutting knife is arranged on the side of the sewing machine opposite to the discharging assembly, and is used for trimming the fabric and cutting off the front end area of ​​the hemming strip.

9. The double-head rotary hemming machine according to claim 8, characterized in that: The folding material assembly includes a pushing cylinder; the pushing cylinder pushes the rotating shaft to rotate on the positioning seat, and a connecting block is provided on the rotating shaft. The top of the connecting block extends upward to the top of the pushing cylinder, and a folding plate is provided on the connecting block that is inclined with the opening.

10. The double-head rotary hemming machine according to claim 8, characterized in that: The shaping component comprises a shaping cylinder arranged at the upper end of the folding component, and the shaping cylinder drives the pressing component to move forward to the opening of the forming pull cylinder, wherein the pressing component is arranged relatively parallel to the opening.

11. The double-head rotary hemming machine according to claim 7, characterized in that: The rotary mop device comprises a rotary mop bracket which can move horizontally and vertically above the work surface through a synchronous wheel slide rail assembly and a longitudinal sliding module; the rotary mop bracket is provided with a rotary motor which can move up and down on the rotary mop bracket through a downward cylinder, and the rotary motor drives the rotary pressure plate to rotate above the work surface.

12. The double-head rotary hemming machine according to claim 11, characterized in that: A plurality of pins are also arranged to penetrate the rotating pressure plate, and the lower surfaces of the plurality of pins are located in the same horizontal plane.

13. The double-head rotary hemming machine according to claim 11, characterized in that: A pressing plate capable of performing up and down buffering through elastic components is arranged around the rotating pressing plate, and the lower surface of the pressing plate is lower than the lower surface of the rotating pressing plate.

14. The double-head rotary hemming machine according to claim 11, characterized in that: An adsorption mechanism is provided inside the side of the material receiving device on the edge wrapping table, wherein the adsorption mechanism is used to adsorb the finished product delivered by the rotating mop device.

15. The double-head rotary hemming machine according to claim 11, characterized in that: Two brushes are arranged opposite to each other on the edge binding table on one side of the material collecting device and can be raised and lowered by adjusting the cylinder. The brushes are distributed along the length direction of both sides of the fabric, and the distance between the two brushes is smaller than the width of the fabric. A height is left between the brushes and the edge binding table for the fabric to enter.

16. A hemming method for a double-head rotary hemming machine, characterized in that: The steps include: The S1 feeding device feeds the fabric into the mop length fixing device; The S2 cloth-mopping clamp assembly drags the fabric onto the fixed-length label delivery table to fix its length, and then the fabric is cut by the shearing assembly; The S3 mop clamp assembly delivers the cut fabric to the label delivery device for labeling; Any idle rotary mop device on both sides of S4 sends the fabric to the corresponding edge binding table. When the fabric reaches the corresponding edge binding table, the next fabric can be sent to another edge binding table by another rotary mop device for edge binding operation; The S5 rotary mopping device cooperates with the trimming and cutting knife to round off the four sides of the fabric; S6. After the hemming device completes the hemming of the four sides of the fabric, the trimming and cutting knife cuts off the reserved area at the front end of the hemming strip; S7. The rotating mopping device delivers the fabric to one side of the receiving platform, and the receiving robot delivers the fabric to the receiving platform.

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