Double-head rotary hemming machine and hemming method thereof

Abstract

The invention discloses a double-head rotary hemming machine and an hemming method thereof. The double-head rotary hemming machine comprises a frame, and the frame is provided with a working table formed by connecting a linearly distributed hemming table, a fixed-length label-feeding table and the hemming table; a feeding device and a label-feeding device are respectively arranged on opposite sides of the fixed-length label-feeding table; a mopping fixed-length device is arranged between the feeding device and the label-feeding device; two hemming devices are respectively arranged on opposite lateral sides of the two hemming tables; a rotating mopping device is movably arranged between the hemming table and the fixed-length label-feeding table to drag fabrics onto the hemming table to cooperate with the hemming device to perform rotary hemming on the fabrics; two material collecting devices are respectively arranged on both sides of the feeding device and on one longitudinal side of the hemming table to collect materials. The invention automatically completes the hemming processing of two fabrics, has high processing efficiency, and at the same time, the equipment occupies a small area and can process large-sized fabrics; in addition, no burrs are exposed on the fabrics after hemming.

Description

Technical Field

[0001] The invention belongs to the technical field of sewing machine manufacturing, and in particular relates to a double-head rotary edge binding machine for towels and an edge binding 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 and packing accordingly.

[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 the hemming processing of a single towel. Such production efficiency can no longer meet the 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 prior art and provide a double-head rotary hemming machine, which occupies a small area, can automatically and efficiently hem two fabrics, and has a large processing size of the fabrics. At the same time, no burrs will be exposed when the hemming is finished.

[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 conveying device are respectively arranged on two opposite sides of the fixed-length label conveying table;

[0009] 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;

[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 lateral opposite sides of the two edge binding table surfaces;

[0011] 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;

[0012] 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.

[0013] Furthermore, 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;

[0014] 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.

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

[0016] Further, the shearing assembly comprises:

[0017] Base;

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

[0019] 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;

[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 knife portion includes a cutting knife in a triangular, trapezoidal or circular shape 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 comprises:

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

[0026] 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;

[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 transmitted to the forming pull cylinder and then sent to the sewing table;

[0028] A cutting assembly, located between the discharging assembly and the forming pull cylinder, for cutting off the edge strip;

[0029] A folding material assembly is provided at 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 the folding component folds the edge strip in half;

[0031] 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;

[0032] 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.

[0033] Furthermore, 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 the connecting block is provided with a folding plate that is inclined with 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 laterally and longitudinally 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 that can move up and down 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 arranged penetratingly inside the rotating pressure plate, and the lower surfaces of the plurality of pins are located in the same horizontal plane.

[0037] Furthermore, a pressing plate capable of performing up and down buffering through elastic components is provided around the rotating pressing plate, and the lower surface of the pressing plate is lower than the lower surface of the rotating pressing 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 arranged opposite to each other on one side of the material collecting device and can be raised and lowered by adjusting a 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; wherein a height is left between the brushes and the edge binding table 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 feeds the fabric into the mop length fixing device;

[0042] 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;

[0043] The S3 mop clamp assembly delivers the cut fabric to the label delivery 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 another 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 off the four sides 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 rotating mopping device delivers the fabric to one side of the material receiving platform, and the material receiving robot delivers the fabric to the material 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 on the fixed-length label delivery table and delivers the label, the rotating mop device drags the fabric to the hemming table located on both sides of the fixed-length label delivery table. The fabric is hemmed by the hemming device horizontally 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 an 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 label 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 strip cutter and four arc cutters on the cutter assembly can be used in conjunction with the ultrasonic module to cut the fabric twice to form a fabric with rounded corners. No subsequent trimming cutter 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 is further described below in conjunction with the accompanying drawings:

[0054] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0055] Figure 2 A top view of an embodiment of the present invention;

[0056] Figure 3 It is a schematic diagram of the three-dimensional structure of a feeding device in one embodiment of the present invention;

[0057] Figure 4 It is a schematic diagram of the three-dimensional structure of the edge binding table, the mop length fixing device and the label feeding device in one embodiment of the present invention;

[0058] Figure 5 It is a schematic diagram of the structure in which a shearing assembly and a cloth pressing assembly are connected in one embodiment of the present invention;

[0059] Figure 6 It 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] Figure 7 for Figure 6 Schematic diagram of the structure of the cloth cutting component, ultrasonic module and driving mechanism when assembled;

[0061] Figure 8 It is a schematic diagram of the three-dimensional structure of a cloth cutting assembly in another embodiment of the present invention;

[0062] Fig. 9 for Figure 8 A magnified view of part A in FIG.

[0063] Fig.10 A schematic diagram of a cloth cutting assembly cutting fabric in another embodiment of the present invention;

[0064] Fig.11 It is a schematic diagram of a roller for cutting out triangular fabric and the fabric after cutting in one embodiment of the present invention;

[0065] Fig.12 It is a schematic diagram of a roller for cutting out a trapezoidal fabric and the fabric after cutting in one embodiment of the present invention;

[0066] Fig.13 It is a schematic diagram of a roller for cutting out circular fabric and the fabric after cutting in one embodiment of the present invention;

[0067] Fig.14 It is a schematic diagram of the three-dimensional structure of a rotating mop device in one embodiment of the present invention;

[0068] Fig.15 It is a partial schematic diagram of the assembly of the rotating pressing plate and the rotating motor in one embodiment of the present invention;

[0069] Fig.16 It is a partial structural schematic diagram of a rotary mopping device in another embodiment of the present invention;

[0070] Fig.17 It is a partial structural schematic diagram of a rotary mopping device in another embodiment of the present invention;

[0071] Fig.18 It 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] Fig.19 It is a partial schematic diagram of the cooperation between the edge-wrapped table with a brush and the rotating pressing plate in one embodiment of the present invention;

[0073] Fig. 20 It is a schematic diagram of the three-dimensional structure of the hemming device in one embodiment of the present invention;

[0074] Fig.21 for Fig. 20A schematic diagram of the three-dimensional structure after omitting the sewing machine and the trimming and cutting knife;

[0075] Fig. 22 for Fig.21 A schematic diagram of the three-dimensional structure from another perspective after the forming tube is omitted;

[0076] Fig.23 for Fig. 22 Schematic diagram of the three-dimensional structure from another perspective;

[0077] Fig.24 It is a three-dimensional structural schematic diagram of the material folding component, the shaping component and the forming pull tube when they are assembled in one embodiment of the present invention;

[0078] Fig.25 It is a partial schematic diagram of the assembly of the hemming device and the frame in one embodiment of the present invention;

[0079] Fig.26 It is a schematic diagram of the three-dimensional structure of a material receiving robot in one embodiment of the present invention;

[0080] Fig. 27 It is a structural schematic diagram of a double-head rotary hemming machine in another embodiment of the present invention;

[0081] Fig.28 It is a schematic diagram of the layout structure of a double-head rotary hemming machine in another embodiment;

[0082] Fig.29 It is a schematic diagram of the layout structure of a double-head rotary hemming machine in another embodiment;

[0083] Fig.30 It 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, edge wrapping 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, material discharging assembly 52, forming pull cylinder 53, opening 530, material cutting assembly 54, material folding assembly 55, shaping assembly 56, material pressing assembly 57, trimming and cutting knife 58, synchronous wheel slide rail assembly 60, rotating mop bracket 61, downward cylinder 62, rotating motor 63, rotating pressing 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 manipulator 71, fabric 80, sliding plate 90, slide rail module 91, hemming 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, lateral 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. Feed 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 application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0086] The present invention provides a double-head rotary hemming machine to solve the problems that the equipment for hemming two fabrics at the same time in the prior art occupies a large area, cannot be applied to the hemming processing of two large-sized fabrics, has low production efficiency, and burrs are exposed when the fabrics are hemmed.

[0087] For ease of understanding, the specific process in the embodiments of the present application is described below. Figure 1-2 A double-head rotary hemming machine in an embodiment of the present application includes a frame 1, a feeding device 2, a label feeding device 3, a mopping fixed length device 4, an hemming device 5, a rotary mopping device 6 and a material 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 opposite sides of the fixed-length label feeding table 10, which are the upper and lower sides of the fixed-length label feeding table 10 in this embodiment.

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

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

[0090] The rotary mopping device 6 is movably arranged between the hemming 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 hemming table 100 and then cooperate with the hemming device to perform rotary hemming on the fabric. At the same time, the hemmed fabric is also delivered to one 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 to receive the finished products.

[0092] In the double-head rotary hemming 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 hemming table located on both sides of the fixed-length label delivery table, and the fabric is hemmed by the hemming device 5 laterally arranged on one side of the hemming table 100, and the hemming 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 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 the lateral sides of the fixed-length label delivery 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 delivery 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, on which are provided front and rear feeding wheels 21 and an active feeding wheel 22. The active feeding wheel 22 is driven to rotate by a feeding motor 24. A plurality of linearly distributed pressing rollers 23 are installed above the active feeding wheel 22. The active feeding 22 and the pressing rollers 23 cooperate to transfer the fabric from the feeding wheel 21 forward to the auxiliary roller 25, and then to the subsequent mop length fixing 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 clamping assembly 42 and a mop clamping assembly 43; the cloth pressing assembly 40 is arranged on the fixed-length label delivery 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 shearing fabrics, and the rear end of the shearing assembly 41 is provided with a clamping assembly 42 for clamping fabrics.

[0096] The clamping assembly 42 includes a clamping block 421 that can be raised and lowered by two relatively arranged clamping cylinders 420. The two clamping blocks 421 are driven downward by the clamping 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, and is used to drag the fabric from the cloth 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 is not described here.

[0097] In this embodiment, there are two types of shearing components 41, one of which is based on Figure 5 The shearing bracket 411 is movable laterally by means of a transverse moving module 410, and a shearing knife 413 is provided on the shearing bracket and is rotatable by means of a shearing motor 412. When the shearing knife 413 is rotated by means of the shearing motor 412, the shearing knife 413 can perform a shearing operation on the fabric laterally by means of the transverse moving module 410. The 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 clamp 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 shear 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 clamp 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 based on Figures 6 to 10 The shearing assembly comprises 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 comprises a roller 330, and a cutting knife portion is arranged along the length direction of the roller on the circumference of the roller 330; the cloth cutting assembly 33 is driven by the driving mechanism 34 to make 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 off the fabric located 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 knife 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 cutting knife 332 respectively. The two arc cutting knives 332 on the same side are in a "human" shape. In this way, the cutting knife 331 and the arc 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 cutting knives 332 , and the cutting knife 333 is used to prevent the strip cutting knife 31 and the four arc-shaped cutting knives 32 from failing to cut the fabric into two pieces.

[0102] based on Figure 7 The driving mechanism 34 includes a power motor 340, and the power motor 340 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 arranged 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 Figures 6 to 10 The following is a specific description of the process when the cutting operation is performed by the cutting knife 331 and the arc cutting knife 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 the process of the mop clamp 43 dragging the fabric backward, the speed of the mop is constant. At this time, the rotation speed of the roller 330 is used to determine the length of the fabric after the fabric cutting component 3 cuts. Relatively speaking, the faster the roller speed, the shorter the length of the fabric after cutting, and the slower the roller speed, the longer the length of the fabric after cutting;

[0107] S3. In the initial state, the front end of the fabric is cut, so the speed of the roller 330 is relatively fast. 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 cutting knife 331 and the four arc-shaped cutting knives 332 just cooperate with the ultrasonic module 2 to cut the fabric, and the fabric 80 is cut into the left fabric and the right fabric, and the two corners on the opposite side of the left fabric and the right fabric are rounded. At this time, the two pieces of fabric are as follows Fig.10 As shown; then the roller 330 continues to drive the left fabric forward for a distance to facilitate the subsequent grabbing of the mop clamp, the right fabric is manually taken out 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 fabric backward, the eccentrically moving cloth cutting component 3 cooperates with the ultrasonic module 32 to cut the fabric, thereby dividing the left fabric into two fabrics again. In this way, a fabric to be processed later is cut out, and the four corners of this fabric are all rounded, so that the four corners of the fabric are cut into rounded corners while cutting the fabric, and 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 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 knife 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 Fig.11 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 Fig.12 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 fabric is finally cut out on the fabric.

[0113] based on Fig.13 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 shape of fabric is finally cut out on 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 two different methods are to meet the requirements of different customers for label positions.

[0116] In this embodiment, based on Figure 1 and Fig.14 The rotary mop device 6 includes a rotary mop bracket 61 which can move horizontally and vertically above the work surface through a synchronous wheel slide rail assembly 60 and a longitudinal sliding module 65; the rotary mop bracket 61 is provided with a rotary motor 63 which can move up and down on the rotary mop bracket 61 through a downward cylinder 62, and the rotary motor 63 drives a rotary pressing 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 hemming table 100 through the rotating pressure plate 64, so as to cooperate with the subsequent hemming device 5 to perform hemming processing on the fabric.

[0118] In addition, based on Fig.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 in the lateral position of the connecting cavity; the boss 67 is arranged 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 quick.

[0120] In addition, in order to prevent the rotating pressure plate 64 from sticking to the fabric when it is separated from the fabric, since the rotating pressure plate is moving with the fabric as it is pressed downward, a plurality of components are added to the rotating pressure plate 64 or the hemming table 101 to prevent the rotating pressure plate 64 from sticking to the fabric when it is separated.

[0121] based on Fig.16 In this embodiment, a plurality of pins 640 are arranged to penetrate the rotating pressing plate 64, and the lower surfaces of the plurality of pins 640 are located on the same horizontal plane; when working, the rotating pressing plate 64 presses the fabric and then moves the position of the fabric. When the rotating pressing 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 Fig.17In this embodiment, a pressing plate 642 that can be buffered up and down by an elastic component 641 is arranged around the rotating pressing plate 64, and the lower surface of the pressing plate 642 is lower than the lower surface of the rotating pressing plate 64. In this way, when the rotating pressing plate 64 presses the fabric, the fabric is first contacted by the pressing plate that can be buffered up and down by the elastic component, and then contacted by the rotating pressing plate 64, and finally the pressing plate and the rotating pressing plate 64 press the fabric in the same plane; when the rotating pressing plate 64 moves up and separates from the fabric, the rotating pressing plate first separates from the fabric. At this time, the pressing plate continues to press the fabric due to the action of the elastic component. When the rotating pressing plate rises again, the pressing plates around are separated from the fabric, so that the fabric can be easily separated from the rotating pressing 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 Fig.18 In this embodiment, an adsorption mechanism 643 is provided inside the edge binding table 100 on one side of the material collecting device for adsorbing the fabric; when the rotating pressing plate 64 transfers the fabric to the edge binding table, the adsorption mechanism on the edge binding 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 Fig.19 In this embodiment, two brushes 645 that can be raised and lowered by adjusting a cylinder 644 are provided on the edge binding table 100 on one side of the material collecting device. A gap is left between the brush 645 and the edge binding 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 edge binding 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 rotating pressing plate 64 presses the fabric and moves, the fabric is moved between the gap between the brush 645 and the hemming table 100, and then the rotating 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 rotating pressing plate 64.

[0126] In this embodiment, based on Figure 20 to Figure 24 The hemming device 5 includes a sewing machine 50, a material discharging 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 assembly 52 is arranged on the opposite side of the sewing machine 50, and is used to transmit the hemming strip on the previous sewing table 51. The discharge assembly 52 includes a discharge wheel 520 for placing the hemming strip, a feed pull cylinder 521 and a power roller 523 arranged relatively to each other. The feed pull cylinder 521 is in a flat square frame shape. The hemming strip passes through the feed pull cylinder 521 during transmission. 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 hemming strip in the power transmission port 522 through a 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 for docking the edging strip 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 strip to be smoothly transmitted in the forming pull cylinder 53, a plurality of blowing pipes (not shown in the figure) are also arranged in the forming pull cylinder 53, which are used to guide the edging strip in the forming pull cylinder, thereby accurately driving the edging strip to be transmitted forward to the sewing table 51 for sewing.

[0130] The material cutting component 54 is arranged between the material discharging component 52 and the forming pull cylinder 53, and is used to cut the edge strip. The material cutting component 54 is a commonly used cutting knife 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. The pushing cylinder 550 pushes the rotating shaft 551 to rotate on the positioning seat 552. A connecting block 553 is provided on the rotating shaft 551. The top of the connecting block extends upward to the top of the pushing cylinder. A folding plate 534 is provided on the connecting block 533 and is inclined to the opening. In this way, when the pushing cylinder 550 is pushed, the folding plate 534 can be driven to 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 foam or other materials, so that the edge strip will not be pressed too tightly after being shaped and folded, causing it to be unable to be transmitted.

[0134] based on Fig.21 The pressing component 57 is arranged on one side of the folding component 55, and is used to press the front end of the edging strip, waiting for the subsequent edging processing of the fabric. Specifically, the pressing component 57 in this embodiment includes a pressing strip 572 that can be driven by a pressing cylinder 570 and a lifting cylinder 571 to move forward and backward and up and down, 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 for trimming the fabric and cutting 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 and cutting 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 of 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 cooperation with the fabric driven by the rotating mopping device 6.

[0138] When the sewing is completed and the edging strip needs to be trimmed, the cutting assembly 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 with 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, driven by the shaping cylinder 560, approaches the folded edging strip in the opening 530 until the pressing component 561 flattens the folded edging strip and folds it in half to form it. In this way, when the folded edging strip at the tail continues to be transmitted out of the shaping pull tube 53, the burrs when the edging strip is cut off by the cutting component 54 are 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 burrs are exposed when the edging is finally finished.

[0140] In addition, in this embodiment, based on Figure 1 and Fig.25The 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 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 the installation of other components in the hemming device, while other ordinary sewing machines do not have such a structure.

[0141] In this embodiment, based on Fig.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 through a material receiving cylinder 711, and material receiving clamps 713 are provided around the material receiving support plate 712.

[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 receiving operation of the finished product.

[0143] See also Figures 27 to 30 , lists the different layouts of this hemming machine:

[0144] 1. The two material receiving devices 7 are respectively arranged on both sides of the feeding device 2 and are located on the same longitudinal side of the edging table 100; 2. The two material receiving devices are located on the side of the work table opposite to the feeding device; 3. The two material receiving devices are respectively located on both sides of the two edging devices; 4. One of the two material receiving devices 7 is located on one side of the edging device, and the other is located on one 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 hemming 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 mop clamp assembly 43 clamps the front end of the fabric and drags it to the fixed-length delivery table 101 to fix its length, and then cuts it by the shear assembly. When cutting, the pressing assembly 40 and the pressing assembly 42 press the fabric;

[0150] S3. The mop clamp assembly delivers the cut fabric to the label delivery device for labeling;

[0151] S4. Any idle rotary mop device 6 on both sides sends the fabric to the corresponding edge table 100. When the fabric reaches the corresponding edge table, the next fabric can be sent to another edge table by another rotary mop device 6 for edge binding operation;

[0152] S5. Here, if the previous shearing assembly is a cutter shearing, the rotary mopping device 6 cooperates with the trimming and cutting knife 58 to round the four sides of the fabric; if the shearing assembly is composed of an ultrasonic cutting module, there is no need for the trimming and cutting knife 58 to trim the fabric; wherein, the length of the hemming strip cut by the shearing assembly is longer than the length of the hemming, in order to reserve an area for the front end of the hemming strip to be sheared by the trimming and cutting knife;

[0153] S6. The hemming device 5 performs hemming operation on the four sides of the fabric. After the hemming is completed, the hemming strip has no exposed burrs, and then the trimming and cutting knife 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 the hemming operation is performed, at the final 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, thereby diversifying the generated products.

[0156] In summary, the 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned 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 receiving device, wherein two of the material receiving devices are respectively arranged on one side of the edge binding table, and are used to receive the finished products delivered by the rotating mopping device on the edge binding table; The mop length fixing device comprises a cloth pressing assembly, a shearing assembly, a pressing assembly and a mop clamping assembly; The shearing assembly comprises: a base; an ultrasonic module, which is arranged on the base; a cloth cutting assembly, which is arranged on the base and located above the ultrasonic module, and 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; a feeding table, which is located at the front end of the base and is used to transfer the fabric between the ultrasonic module and the cloth cutting assembly; 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.

2. The double-head rotary hemming machine according to claim 1, characterized in that: The cloth pressing assembly is arranged on the fixed-length label delivery table; a shearing assembly for shearing fabrics is arranged at the rear end of the cloth pressing assembly; 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 1, 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.

4. The double-head rotary hemming machine according to claim 1, characterized in that: The cutter portion includes a triangular, trapezoidal or circular cutter arranged along the circumference of the roller.

5. The double-head rotary hemming machine according to claim 1, 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.

6. The double-head rotary hemming machine according to claim 1, 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.

7. The double-head rotary hemming machine according to claim 1, 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.

8. The double-head rotary hemming machine according to claim 5, 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 a rotary pressure plate to rotate above the work surface.

9. The double-head rotary hemming machine according to claim 8, 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.

10. The double-head rotary hemming machine according to claim 8, 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.

11. The double-head rotary hemming machine according to claim 8, 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.

12. The double-head rotary hemming machine according to claim 8, 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.

13. A hemming method for a double-head rotary hemming machine as claimed in claim 1, characterized in that: The steps include: The S1 feeding device delivers the fabric to 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; After the S6 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; The S7 rotary 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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