Full-automatic aligning and sewing device and method for flat flexible cloth

Abstract

The present application provides a kind of full-automatic alignment stitching device and method of flat flexible cloth, device is by clamping alignment mechanism, stitching tension device, cloth stitching mechanism, door width alignment component etc., can realize the full-automatic alignment of flat flexible cloth material head both sides and bottom weft, then stitches under suitable tension state, avoids the adverse factors generated in cloth production process in efficiency, stability and quality by manual operation, to improve production efficiency, production quality and degree of automation, also greatly reduces the labor cost, improves production working environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of open-width flexible fabric dyeing and finishing equipment, in particular to an open-width flexible fabric full-automatic alignment and sewing device and method. BACKGROUND

[0002] The open-width flexible fabric is still a labor-intensive industry in the whole dyeing and finishing industry. Due to the large range of material properties such as width, thickness and elasticity of the open-width flexible fabric, the types are various, and the rigidity of the flexible fabric itself is poor, so it is difficult to realize the automation of feeding and sewing. Therefore, the sewing machine is operated in a segmented manner under the condition of appropriate tension to reduce the waste of fabric. However, this method has many manual interventions, poor production environment, high labor intensity, poor stability, low production efficiency and quality, high labor cost, and there is no mature technology in the industry. Therefore, there is an urgent need for an open-width flexible fabric full-automatic alignment and sewing method and device to solve the above problems and fill the gap in the industry. SUMMARY

[0003] Therefore, the present application discloses an open-width flexible fabric full-automatic alignment and sewing device and method, and the specific scheme is as follows:

[0004] An open-width flexible fabric full-automatic alignment and sewing device, characterized in that it comprises a material frame, a clamping and alignment mechanism, a sewing tension device, a tension rod, a sewing machine support and a sewing machine assembly.

[0005] The material frame comprises a first material frame and a second material frame for accommodating fabric. The first material frame is located on the right side of the second material frame. The first material frame is located on the left side of the first material frame. The end of the first material frame is located below the first material frame. The end of the first material frame is located below the first material frame. The end of the first material frame is located below the first material frame.

[0006] The clamping and alignment mechanism is arranged between the first material frame and the second material frame, and comprises a clamping and alignment frame, a tail material head feeding guide rail arranged on the clamping and alignment frame, a first material head clamping mechanism and a tail material head clamping mechanism. The first material head clamping mechanism is located on the right side of the tail material head feeding guide rail. The tail material head clamping mechanism is arranged on the tail material head feeding guide rail and can slide towards or away from the direction of the first material head clamping mechanism. The tail material head clamping mechanism and the first material head clamping mechanism both comprise a first clamp for clamping fabric and a edge-finding and distance-measuring sensor arranged on the first clamp.

[0007] The tension rod is a rod-shaped structure, which is arranged between the first material frame and the second material frame and located on the left side of the first material head clamping mechanism.

[0008] The suture tensioning device between the first material frame and the second material frame comprises a chuck base, a transverse sliding rail, a transverse platform, a fixed platform, a first lifting cylinder and a material head clamping mechanism; the chuck base is arranged below the tensioning rod, the transverse sliding rail is arranged on the chuck base, the transverse platform is arranged on the transverse sliding rail, the fixed platform is arranged on the transverse platform, the first lifting cylinder is arranged on the fixed platform, and at least two groups of the first lifting cylinder are arranged in the longitudinal direction; the end of the piston rod of each group of the first lifting cylinder is provided with a group of the material head clamping mechanism; the material head clamping mechanism comprises a second chuck, and the first material head and the tail material head are clamped by the second chuck to make the first material head and the tail material head adhere to form the material head.

[0009] The sewing machine support is located on the left side of the tensioning rod and comprises a support body, a sewing machine guide rail and a longitudinal rack; the sewing machine guide rail and the longitudinal rack are arranged on the support body.

[0010] The sewing machine assembly comprises a support platform, a sewing machine, a fabric guiding platform and a sewing machine driving motor; the support platform is arranged on the sewing machine guide rail; the sewing machine driving motor is arranged on the support platform and is engaged with the longitudinal rack through a gear; the sewing machine is arranged on the support platform; the fabric guiding platform is arranged on the support platform and is located on the front side of the presser foot of the sewing machine; the fabric guiding platform is a plate structure, and the front end of the fabric guiding platform is provided with an oblique inclination angle.

[0011] As a supplement to the technical scheme of the present application, a cutter for cutting the material head is arranged on the sewing machine assembly and is located on one side of the presser foot of the sewing machine.

[0012] The material head clamping mechanism further comprises a lifting platform arranged on the first lifting cylinder; the second chuck comprises a bidirectional cylinder, a first clamping piece and a second clamping piece; the bidirectional cylinder is arranged on the lifting platform and has two piston rods which can move in opposite directions; the first clamping piece is arranged on the first piston rod; and the second clamping piece is arranged on the second piston rod.

[0013] As a supplement to the technical scheme of the present application, the first material head clamping mechanism and the tail material head clamping mechanism of the clamping alignment mechanism are the same in structure and both comprise a chuck driving device, a clamping support, a first chuck and an edge detection sensor; the chuck driving device is arranged on the clamping support.

[0014] The first chuck comprises an upper chuck I, an upper chuck II, a lower chuck I, and a lower chuck II, each of which is connected with the clamping support through a chuck driving device, the chuck driving device comprises a lifting mechanism and a longitudinal moving mechanism, the chuck is arranged on the longitudinal moving mechanism, the longitudinal moving mechanism is used for driving the chuck to longitudinally move in the longitudinal direction, the longitudinal moving mechanism is arranged on the lifting mechanism, the lifting mechanism is used for driving the longitudinal moving mechanism to vertically move in the vertical direction, and the lifting mechanism is arranged on the clamping support; a boundary searching and distance measuring sensor is arranged on each chuck.

[0015] The fabric positioning sensor group is provided with two groups, a first fabric positioning sensor group is arranged below the leading end of the fabric in the first fabric frame, and a second fabric positioning sensor group is arranged below the trailing end of the fabric in the first fabric frame, and the fabric positioning sensor group comprises two photoelectric sensors at the same height.

[0016] As a supplement to the technical scheme of the application, the fabric width alignment assembly is arranged below the leading end of the fabric in the first fabric frame and comprises a fabric width alignment support, a counter synchronous lead screw, a lead screw motor, a first base, a second base, a base sliding rail, a left pull rod, a right pull rod, a left pull rod cylinder, a right pull rod cylinder, and a third lifting cylinder.

[0017] The fabric width alignment support is arranged on the third lifting cylinder, the lead screw motor, the counter synchronous lead screw, and the base sliding rail are arranged on the fabric width alignment support, the first base and the second base are arranged on the base sliding rail, the counter synchronous lead screw is located above the base sliding rail, and the counter synchronous lead screw is screwed with the first base and the second base, and the lead screw motor is connected with the counter synchronous lead screw.

[0018] The left pull rod cylinder is arranged on the first base, and the left pull rod is arranged on the piston rod of the left pull rod cylinder; the right pull rod cylinder is arranged on the second base, and the right pull rod is arranged on the piston rod of the right pull rod cylinder, the left pull rod comprises a right extension part and a first rod-shaped part, the right extension part is a plate-shaped structure extending to the right, and the first rod-shaped part is a rod-shaped structure vertically arranged at the right end of the right extension part, the right pull rod and the left pull rod are symmetrically arranged, and comprise a left extension part and a second rod-shaped part, the left extension part is a plate-shaped structure extending to the left, and the second rod-shaped part is a rod-shaped structure vertically arranged at the right end of the left extension part.

[0019] As a supplement to the technical scheme of the application, the combined chuck clamping mechanism further comprises a proximity switch and a metal protrusion, the proximity switch is arranged on the lifting platform, and the metal protrusion is arranged on the support platform of the sewing machine assembly.

[0020] The sewing machine assembly further comprises a thread guide wheel device arranged on the support platform of the sewing machine assembly and above the thread guide platform, the thread guide wheel device comprising a thread guide wheel driving motor, support plates, thread guide wheels, rotating shafts, and ratchets, the support plates are arranged in two groups and are arranged in parallel, the rotating shafts are arranged between the two groups of support plates and are connected with the support plates through bearings, the thread guide wheels are arranged on the rotating shafts, and the thread guide wheel driving motor is connected with the rotating shafts; the ratchets are arranged on the rotating shafts, the ratchets are arranged in two groups and are located on the two sides of the thread guide wheels, the outer surfaces of the ratchets are provided with sharp protrusions, and the diameters of the ratchets are greater than the diameters of the thread guide wheels.

[0021] As a supplement to the technical scheme of the present application, the relationship among the diameter of the ratchet, the diameter of the thread guide wheel, and the thickness A of the material head is as follows:

[0022]

[0023] In the above formula, D 棘 is the diameter of the ratchet, D 引 is the diameter of the thread guide wheel, and A is the thickness of the material head.

[0024] As a supplement to the technical scheme of the present application, the sewing machine assembly further comprises a lifting plate and a second lifting cylinder, the second lifting cylinder is arranged on the support platform of the sewing machine assembly, the lifting plate is arranged at the end of the piston rod of the second lifting cylinder, and the thread guide wheel device and the thread guide wheel driving motor are arranged on the lifting plate.

[0025] As a supplement to the technical scheme of the present application, the thread guide wheel device further comprises a first synchronous belt, a second synchronous belt, a first pulley, a second pulley, and a third pulley.

[0026] The rotating shafts are arranged in three groups, namely a first rotating shaft, a second rotating shaft, and a third rotating shaft.

[0027] The thread guide wheels are arranged in three groups, namely a first thread guide wheel, a second thread guide wheel, and a third thread guide wheel.

[0028] The ratchets are arranged in three groups, namely a first ratchet, a second ratchet, and a third ratchet.

[0029] The diameters of the three groups of thread guide wheels are the same, and the diameters of the three groups of ratchets are the same.

[0030] The first rotating shaft, the second rotating shaft and the third rotating shaft are sequentially arranged between the two groups of support plates from back to front, the first cloth guide wheel, the first belt wheel and the first ratchet wheel are arranged on the first rotating shaft, the second cloth guide wheel, the second belt wheel and the second ratchet wheel are arranged on the second rotating shaft, and the third cloth guide wheel, the third belt wheel and the third ratchet wheel are arranged on the third rotating shaft, the first belt wheel and the second belt wheel are connected by a first synchronous belt, the second belt wheel and the third belt wheel are connected by a second synchronous belt, and the cloth guide wheel driving motor is connected with the first rotating shaft.

[0031] The diameters of the first belt wheel, the second belt wheel and the third belt wheel satisfy the following relationship:

[0032] D1≤D2≤D3

[0033] In the above formula, D1 is the diameter of the first belt wheel, D2 is the diameter of the second belt wheel, and D3 is the diameter of the third belt wheel.

[0034] As a supplement to the technical scheme of the application, the distance between the two adjacent material head chuck mechanisms is greater than the total length of the cloth guide wheel device.

[0035] The application further discloses a use method of the full-automatic flat flexible cloth aligning and sewing device, which comprises the following steps:

[0036] S1. The upper chuck I and the upper chuck II of the first material head clamping mechanism of the clamping and aligning mechanism are used to find the edge and measure the width of the first material head in the first material frame, so that the width data of the first material head is obtained, then the upper part of the first material head is clamped, and meanwhile, the upper chuck I and the upper chuck II of the tail material head clamping mechanism are used to find the edge and measure the width of the tail material head in the second material frame, so that the width data of the tail material head is obtained, then the upper part of the tail material head is clamped.

[0037] S2. The lower end edges of the first material head and the tail material head are adjusted, and the adjustment of the first material head is taken as an example, the upper chuck I and the upper chuck II of the first material head clamping mechanism are used to clamp the first material head, in this state, the first material head is located below the first photoelectric sensor and the second photoelectric sensor, and can shield the light source; the upper chuck I is raised to slowly raise the left part of the first material head until the first photoelectric sensor monitors the light source, then the upper chuck II is raised to slowly raise the right part of the first material head until the second photoelectric sensor monitors the light source.

[0038] S3. The first material head clamping mechanism of the clamping and aligning mechanism adjusts the position of the first material head through each chuck, the tail material head clamping mechanism adjusts the position of the tail material head through each chuck, the vertical center lines of the first material head and the tail material head are aligned, according to the width data of the first material head and the tail material head, the difference between the two is within a set range, for example, within 5 mm, then the cloth folding of the width aligning assembly is not needed.

[0039] When the width of the first material head is too large, the door width alignment assembly folds the cloth of the first material head, first, the left pull rod cylinder retracts, the right pull rod cylinder extends, then the third lifting cylinder drives the door width alignment support to rise, so that the lower end of the cloth is located between the left pull rod and the right pull rod; then the left pull rod cylinder extends, the right pull rod cylinder retracts, so that the left pull rod drives the cloth at the position of the left pull rod to move forward, the right pull rod drives the cloth at the position of the right pull rod to move backward, finally the drive screw motor is driven to move the left pull rod rightward along the base slide rail, and the right pull rod leftward along the base slide rail, so as to fold the cloth to form an "S" shape structure, and the upper clamp I, the upper clamp II, the lower clamp I and the lower clamp II of the first material head clamping mechanism move in cooperation with the door width alignment assembly, so as to reduce the width of the first material head, so that the width of the tail material head is consistent with that of the first material head, and the side edges are aligned; after the cloth folding is completed, the tail material head clamping mechanism clamps the tail material head to move horizontally to the first material head clamping mechanism, so that the first material head and the tail material head are in a state of adhesion;

[0040] When the width of the tail material head is too large, the tail material head clamping mechanism clamps the tail material head to move horizontally above the door width alignment assembly, and the door width alignment assembly folds the cloth of the tail material head;

[0041] Then the piston rod of the first lifting cylinder of the sewing tensioning device is raised to clamp the lower end of the joint material head;

[0042] Then the lower clamp I and the lower clamp II of the tail material head clamping mechanism and the lower clamp I and the lower clamp II of the first material head clamping mechanism are released to clamp the joint material head and reset; at this time, if the door width alignment assembly participates in the cloth folding process, the third lifting cylinder of the door width alignment assembly retracts to reset;

[0043] S4. The joint material head clamping mechanism is driven by the horizontal moving platform of the sewing tensioning device to move to the left side of the tensioning rod, the piston rod of the first lifting cylinder is raised synchronously, the joint material head clamping mechanism is raised to the same height as the tensioning rod, so that the joint material head located between the joint material head clamping mechanism and the tensioning rod is in a tensioning state, and the joint material head clamping mechanism cooperates with the tensioning rod to apply a transverse tensioning force to the joint material head;

[0044] S5. The sewing machine driving motor of the sewing machine assembly works to drive the support platform to slide along the sewing machine guide rail, so that the sewing machine moves to the joint material head to sew the joint material head;

[0045] S5. After the sewing of the joint material head is completed, the clamping and aligning mechanism, the sewing tensioning device and the sewing machine assembly are all reset.

[0046] Beneficial effects: the present application realizes full-automatic alignment and sewing of flat flexible cloth through the design of automatic clamping alignment mechanism, sewing tensioning device and sewing machine assembly, can guarantee sewing quality, reduces manual intervention and improves production efficiency. In another aspect of the present application, through the setting of door width alignment assembly, the sewing process can be realized to adapt to different width cloth, and the adaptability is strong. In another aspect of the present application, through the setting of cloth guiding wheel device of sewing machine assembly, cooperating with the sewing tensioning mechanism, stable horizontal and vertical tensioning force can be ensured in the process of cloth sewing, further improving the sewing quality. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 It is a front view structural schematic diagram of the present application.

[0048] Figure 2 It is a clamping alignment mechanism structural schematic diagram of the present application.

[0049] Figure 3 It is a clamping alignment mechanism structural schematic diagram of the present application.

[0050] Figure 4 It is a clamping alignment mechanism structural schematic diagram of the present application.

[0051] Figure 5 It is a door width alignment assembly structural schematic diagram of the present application.

[0052] Figure 6 It is a door width alignment assembly structural schematic diagram of the present application.

[0053] Figure 7 It is a sewing tensioning device structural schematic diagram of the present application.

[0054] Figure 8 It is a sewing machine support and sewing machine assembly structural schematic diagram of the present application.

[0055] Figure 9 It is a sewing machine assembly structural schematic diagram of the present application.

[0056] Figure 10 It is a cloth guiding wheel device structural schematic diagram of the present application.

[0057] Figure 11 It is a cloth guiding wheel device structural schematic diagram of the present application.

[0058] Figure 12 It is a cloth under horizontal and vertical tensioning force schematic diagram.

[0059] Fig. 1. First material frame, 2. Second material frame, 3. Clamping alignment mechanism, 4. Suturing tensioning device, 5. Tensioning rod, 6. Sewing machine support, 7. Sewing machine assembly, 8. Clamping alignment frame, 9. First material head feeding guide rail, 10. Tail material head clamping mechanism, 11. First material head clamping mechanism, 12. Chuck base, 13. Horizontal moving slider, 14. Horizontal moving slide rail, 15. Horizontal moving platform, 16. Horizontal moving cylinder, 17. Fixed platform, 18. First lifting cylinder, 19. Lifting platform, 20. Bidirectional cylinder, 21. First clamping piece, 22. Second clamping piece, 23. Support platform, 24. Sewing machine, 25. Thread feeding platform, 26. Suture channel support, 27. Suture roll, 28. Sewing machine driving motor, 29. Upper chuck I, 30. Upper chuck II, 31. Lower chuck I, 32. Lower chuck II, 33. Gate width alignment assembly, 34. Gate width alignment support, 35. Opposite synchronous lead screw, 36. Lead screw motor, 37. First base, 38. Second base, 39. Base slide rail, 40. Left pulling rod cylinder, 41. Right extension, 42. First rod-shaped part, 43. Left extension, 44. Second rod-shaped part, 45. Third lifting cylinder, 46. Support main body, 47. Sewing machine guide rail, 48. Longitudinal moving rack, 49. Thread feeding wheel device, 50. Thread feeding wheel driving motor, 51. Support plate, 52. Lifting support plate, 53. Second lifting cylinder, 54. First synchronous belt, 55. Second synchronous belt, 56. First pulley, 57. Second pulley, 58. Third pulley, 59. First thread feeding wheel, 60. Second thread feeding wheel, 61. Third thread feeding wheel, 62. First ratchet wheel, 63. Second ratchet wheel, 64. Third ratchet wheel, 65. First rotation shaft, 66. Second rotation shaft, 67. Third rotation shaft. DETAILED DESCRIPTION

[0060] In the description of the present application, it is to be understood that the terms "first", "second", "third" and the like, merely mean different instances and do not imply a relative importance or a specific number of the technical features indicated. Thus, the features defined with "first", "second" and the like can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise explicitly specified and limited.

[0061] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] As shown in Figures 1 to 12 A full-automatic alignment and sewing device for flat flexible cloth is used for automatic alignment and sewing of the cloth, which comprises a cloth frame, a clamping and aligning mechanism 3, a sewing tensioning device 4, a tensioning rod 5, a sewing machine support 6 and a sewing machine assembly 7.

[0063] In the cloth dyeing and finishing process, the ends of two frames of cloth need to be sewn to form continuous cloth, and the position of the sewing of the two frames of cloth is the sewing head. In order to realize automatic sewing of the cloth, the cloth is stored in the cloth frame, and the cloth is stored in the cloth frame in the following manner: the first cloth head is located outside the cloth frame, the first cloth head is placed on the left frame of the cloth frame, the end of the first cloth head naturally falls under the action of gravity, and then the main body of the cloth is stacked in the cloth frame in an S shape, when the cloth in the cloth frame is full, the tail of the cloth is located outside the cloth frame, and the tail of the cloth is placed on the right frame of the cloth frame.

[0064] In order to ensure the continuity of the cloth dyeing and finishing process, the heads in each cloth frame need to be sewn to enable them to continuously enter the dyeing and finishing process section. For example, the first cloth head of the first cloth frame 1 needs to be sewn with the tail of the second cloth frame 2 to form a sewing head. In the actual processing stage, the tail of the cloth in the first cloth frame enters the dyeing and finishing process section first, and after the cloth in the first cloth frame 1 enters the dyeing and finishing process section, the first cloth head of the cloth in the first cloth frame 1 enters the dyeing and finishing process section by pulling the tail of the cloth in the second cloth frame 2 through the sewing head.

[0065] The cloth frame for storing cloth can be provided with multiple groups, in order to facilitate the understanding of the technical scheme of the present application, the cloth frame in the present application is provided with two groups, which are the first cloth frame 1 and the second cloth frame 2. The first cloth frame 1 is located to the right of the second cloth frame 2, the first cloth head of the cloth in the first cloth frame 1 is placed on the left frame of the first cloth frame 1, and the end of the first cloth head naturally falls under the action of gravity. The tail of the cloth in the second cloth frame 2 is placed on the right frame of the second cloth frame 2, and the end of the tail of the cloth naturally falls under the action of gravity. Through the above setting, the first cloth head of the cloth in the first cloth frame 1 and the tail of the cloth in the second cloth frame 2 can be arranged adjacent to each other, which is convenient for the subsequent sewing process.

[0066] The clamping and aligning mechanism 3 is used for clamping the first cloth head of the first cloth frame 1 and the tail of the second cloth frame 2, and is arranged between the first cloth frame 1 and the second cloth frame 2. It comprises a clamping and aligning frame 8, a tail cloth feeding guide rail 9, a first cloth head clamping mechanism 10 and a tail cloth head clamping mechanism 11.

[0067] The tail end head cloth feeding guide rail 9 and the head end head clamping mechanism 10 are arranged on the clamping alignment frame 8, and the head end head clamping mechanism 10 is located at the right side of the tail end head cloth feeding guide rail 9. The tail end head clamping mechanism 11 is arranged on the tail end head cloth feeding guide rail 9, and is slidably arranged on the tail end head cloth feeding guide rail 9 towards or away from the head end head clamping mechanism 10 through a motor rack structure.

[0068] The tail end head clamping mechanism 11 and the head end head clamping mechanism 10 each include a first clamping head for clamping cloth, the head end head clamping mechanism 10 clamps the head end of the cloth in the first material frame 1 through the first clamping head, and the tail end head clamping mechanism 11 clamps the tail end of the cloth in the second material frame 2 through the first clamping head and slides on the tail end head cloth feeding guide rail 9 towards the head end head clamping mechanism 10, so that the head end of the cloth in the first material frame 1 is attached to the tail end of the cloth in the second material frame 2.

[0069] The tensioning rod 5 is a rod-shaped structure with a length direction parallel to the horizontal plane, which is arranged between the first material frame 1 and the second material frame 2 and located at the left side of the head end head clamping mechanism 10.

[0070] The sewing tensioning device 4 is arranged between the first material frame 1 and the second material frame 2, and is used for clamping the head end of the cloth in the first material frame 1 and the tail end of the cloth in the second material frame 2, so that the head ends of the two pieces of cloth are attached to form a joint head.

[0071] The sewing tensioning device 4 includes a clamping head base 12, a horizontal sliding block 13, a horizontal sliding rail 14, a horizontal sliding platform 15, a horizontal sliding cylinder 16, a fixed platform 17, a first lifting cylinder 18, and a joint head clamping mechanism.

[0072] The clamping head base 12 is arranged below the tensioning rod 5, and the horizontal sliding block 13 and the horizontal sliding rail 14 are arranged on the clamping head base 12.

[0073] The horizontal sliding rail 14 is arranged on the clamping head base 12, and the horizontal sliding block 13 is arranged on the horizontal sliding rail 14. The horizontal sliding platform 15 is arranged on the horizontal sliding block 13, and the horizontal sliding cylinder 16 is arranged on the clamping head base 5 and connected with the horizontal sliding platform 15, so as to drive the horizontal sliding platform 15 to slide on the horizontal sliding rail 14.

[0074] The fixed platform 17 is arranged on the horizontal sliding platform 15, and the first lifting cylinder 18 is arranged on the fixed platform 17. The first lifting cylinder 18 is arranged in at least two groups and arranged in a longitudinal direction. The end of the piston rod of each group of the first lifting cylinder 18 is provided with a joint head clamping mechanism, and the first lifting cylinder 18 can drive the joint head clamping mechanism to lift.

[0075] The material head clamping mechanism is provided with at least two groups and is arranged in the longitudinal direction, and can clamp the material head in the full coverage. Figure 7 As shown in the figure, the material head clamping mechanism disclosed in the present application is provided with five groups, which are respectively a first material head clamping mechanism, a second material head clamping mechanism, a third material head clamping mechanism, a fourth material head clamping mechanism and a fifth material head clamping mechanism. Correspondingly, the first lifting cylinder 18 is also provided with five groups, which are respectively a first cylinder I, a first cylinder II, a first cylinder III, a first cylinder IV and a first cylinder V. The first material head clamping mechanism is arranged on the first cylinder I, the second material head clamping mechanism is arranged on the first cylinder II, the third material head clamping mechanism is arranged on the first cylinder III, the fourth material head clamping mechanism is arranged on the first cylinder IV, and the fifth material head clamping mechanism is arranged on the first cylinder V.

[0076] The material head clamping mechanism comprises a lifting platform 19 and a second clamp head, and the second clamp head comprises a bidirectional cylinder 20, a first clamp piece 21 and a second clamp piece 22. The bidirectional cylinder 20 is arranged on the lifting platform 19, and the bidirectional cylinder 20 has two piston rods which can move in opposite directions. The first clamp piece 21 is arranged on the first piston rod, and the second clamp piece 22 is arranged on the second piston rod, so that the two clamp pieces can move relative to each other to clamp the cloth. Through the above structure design, the lifting platform 19 can move up and down and horizontally.

[0077] The material head bottom clamp device can clamp the material head. First, the material head bottom clamp device moves horizontally to the left from the lower part of the tensioning rod 5, and then moves upward, so that the clamp of the material head bottom clamp device moves to the same height as the tensioning rod 5, and the two sections of cloth between the tensioning rod 5 and the clamp are in close contact, which facilitates the sewing machine assembly 7 to sew the two sections of cloth.

[0078] The sewing machine support 6 is located on the left side of the tensioning rod 5. The sewing machine support 6 comprises a support body 46, a sewing machine guide rail 47 and a longitudinal movement rack 48, and the sewing machine guide rail 47 and the longitudinal movement rack 48 are arranged on the support body 46.

[0079] The sewing machine assembly 7 comprises a support platform 23, a sewing machine 24, a cloth guiding platform 25, a suture line channel support 26, a suture line roll 27, a cutter and a sewing machine driving motor 28. The support platform 23 is arranged on the sewing machine guide rail 47, and a sliding block matched with the guide rail is arranged on the support platform 23, so that the support platform 23 can slide on the sewing machine guide rail 47. The sewing machine driving motor 28 is arranged on the support platform 23, and a gear is arranged on the rotating shaft of the sewing machine driving motor 28. The gear arranged on the sewing machine driving motor 28 is engaged with the longitudinal movement rack 48, so that the sewing machine driving motor 28 can drive the support platform 23 to slide along the sewing machine guide rail 47.

[0080] The sewing machine 24, the suture channel support 26 and the suture roll 27 are arranged on the support platform 23, the suture channel support 26 and the suture roll 27 are arranged on the rear side of the sewing machine 24, and the thread on the suture roll 27 enters the sewing machine 24 through the suture channel support 26. The fabric guiding platform 25 is arranged on the support platform 23 and located on the front side of the presser foot of the sewing machine 24, the fabric guiding platform 25 is a plate structure, and the front end of the fabric guiding platform 25 is provided with an oblique inclination angle for guiding the fabric. The cutting knife for cutting the material head is further arranged on the sewing machine assembly 7, the cutting knife is arranged on the sewing machine 24 and located on one side of the presser foot of the sewing machine 24, and the cutting knife cuts the material head of the completed sewing part.

[0081] In the actual working process of the above-mentioned full-automatic alignment and sewing device for flat flexible fabric, first, the first material head clamping mechanism 10 of the clamping and aligning mechanism 3 clamps the first material head of the fabric in the first material frame 1, and then the tail material head clamping mechanism 11 clamps the tail material head of the fabric in the second material frame 2. Then, the tail material head clamping mechanism 11 is driven to move on the tail material head fabric guiding rail 9 through the motor rack mechanism, so that the tail material head clamping mechanism 11 moves to the first material head position with the tail material head clamped, and the tail material head is attached to the first material head.

[0082] The sewing tensioning device 4 works, the first lifting cylinder 18 drives the material head clamping mechanism to rise, the first clamping piece 21 and the second clamping piece 22 of the material head clamping mechanism clamp the material head, then move downward below the tensioning rod 5, and finally move to the left side of the tensioning rod 5 to rise to the same height as the tensioning rod 5. At this time, the sewing machine assembly 7 works, the support platform 23 moves along the sewing machine guide rail 47 under the action of the sewing machine driving motor 28, and the material head is sewn.

[0083] As a supplement to the technical scheme of the present application, the first material head clamping mechanism 10 and the tail material head clamping mechanism 11 of the clamping and aligning mechanism 3 are the same in structure, and both include a clamping head driving device, a clamping support, a first clamping head, and an edge searching and distance measuring sensor. The clamping head driving device is arranged on the clamping support.

[0084] The first clamping head includes an upper clamping head I 29, an upper clamping head II 30, a lower clamping head I 31 and a lower clamping head II 32. Each clamping head is connected with the clamping support through the clamping head driving device. The clamping head driving device includes a lifting mechanism and a longitudinal moving mechanism. The clamping head is arranged on the longitudinal moving mechanism, and the longitudinal moving mechanism is used to drive the clamping head to move longitudinally. The longitudinal moving mechanism is arranged on the lifting mechanism, and the lifting mechanism is used to drive the longitudinal moving mechanism to move vertically. The lifting mechanism is arranged on the clamping support. The lifting mechanism and the longitudinal moving mechanism can be the same or different in structure, and can adopt a lead screw and a motor structure, or a cylinder and a sliding rail structure to achieve the technical effect of longitudinal movement or lifting.

[0085] Each of the clamping heads is provided with an edge searching sensor, which can be an optical sensor.

[0086] In the production of cloth, the weft yarns are prone to skew, so that the end of the leading end and the trailing end of the cloth is not flush, that is, the straight line where the bottom edge of the cloth is located is not perpendicular to the straight line where the two sides of the cloth are located. In order to reduce waste of cloth, the lower edge of the trailing end and the leading end of the cloth needs to be aligned and sewn. The application also comprises a cloth positioning sensor group, which comprises two groups of optical sensors at the same height, and the two groups of optical sensors of the cloth positioning sensor group are a first optical sensor and a second optical sensor. The cloth positioning sensor group is provided with two groups, the first cloth positioning sensor group is arranged below the leading end, and is used to monitor whether the lower edge of the leading end is flush with the horizontal reference line; the second cloth positioning sensor group is arranged below the trailing end, and is used to monitor whether the lower edge of the trailing end is flush with the horizontal reference line, so that the bottom edges of the two ends are flush.

[0087] When adjusting the position of the lower edge of the leading end and the trailing end, the clamping alignment mechanism 3 needs to be matched. Taking the adjustment of the position of the leading end as an example, first, the upper clamping head 129 and the upper clamping head 130 of the leading end clamping mechanism 10 clamp the leading end. In this state, the leading end is located below the first optical sensor and the second optical sensor, which can block the light source. The upper clamping head 129 rises and slowly lifts the left part of the leading end until the first optical sensor detects the light source. Then the upper clamping head 130 rises and slowly lifts the right part of the leading end until the second optical sensor detects the light source. Since the first optical sensor and the second optical sensor are located on the same horizontal reference line, the above process can make the lower edge of the leading end flush with the height of the first optical sensor and the second optical sensor, and ensure that the lower edge of the leading end is flush with the horizontal reference line.

[0088] In actual production process, the cloth in the first material frame 1 and the cloth in the second material frame 2 may have different technical problems in width, resulting in misalignment of the two ends of the material head in the width direction, affecting the subsequent sewing effect. As a supplement to the technical scheme of the application, a width alignment assembly 33 is arranged below the first material frame 1. The width alignment assembly 33 is used to adjust the width of the cloth, including a width alignment bracket 34, a synchronous screw 35, a screw motor 36, a first base 37, a second base 38, a base slide rail 39, a left pull rod, a right pull rod, and a left pull rod cylinder 40, a right pull rod cylinder, and a third lifting cylinder 45.

[0089] The third lifting cylinder 45 is vertically arranged on the ground, and the width alignment bracket 34 is connected with the piston rod of the third lifting cylinder 45, so that the third lifting cylinder 45 can drive the width alignment bracket 34 to lift. The screw motor 36, the synchronous screw 35 and the base slide rail 39 are arranged on the width alignment bracket 34, and the first base 37 and the second base 38 are arranged on the base slide rail 39, so that the first base 37 and the second base 38 can slide on the base slide rail 39. The synchronous screw 35 is located above the base slide rail 39, and the synchronous screw 35 is screwed with the first base 37 and the second base 38, the screw motor 36 is connected with the synchronous screw 35, and the synchronous screw 35 can be driven to rotate, so that the sliding direction of the first base 37 and the second base 38 on the base slide rail 39 is opposite, specifically by changing the screw direction of the screw thread of the screwing part of the first base 37, the second base 38 and the synchronous screw 35, or by changing the rotation direction of the screw thread on the outer surface of the synchronous screw 35, so that the movement direction of the first base 37 and the second base 38 is opposite when the synchronous screw 35 rotates.

[0090] The left pull rod cylinder 40 is arranged on the first base 37, and the left pull rod is arranged on the piston rod of the left pull rod cylinder 40; the right pull rod cylinder is arranged on the second base 38, and the right pull rod is arranged on the piston rod of the right pull rod cylinder.

[0091] The left pull rod comprises a right extension part 41 and a first rod-shaped part 42. The right extension part 41 is a plate-shaped structure extending to the right side. The first rod-shaped part 42 is a rod-shaped structure vertically arranged at the right end of the right extension part 41. The right pull rod is symmetrically arranged with the left pull rod, comprising a left extension part 43 and a second rod-shaped part 44. The left extension part 43 is a plate-shaped structure extending to the left side. The second rod-shaped part 44 is a rod-shaped structure vertically arranged at the right end of the left extension part 43. The front and back positions of the left pull rod and the right pull rod can be adjusted by the left pull rod cylinder 40 and the right pull rod cylinder, so that the movement tracks of the left pull rod and the right pull rod can be staggered when the first base 37 and the second base 38 move relative to each other, thereby avoiding the technical problem of spatial interference between the first pull rod and the second pull rod when the first base 37 and the second base 38 slide on the base slide rail 39.

[0092] As shown in Figure 5 When it is necessary to reduce the width of the cloth, first, the left pull rod cylinder 40 is retracted, and the right pull rod cylinder is extended. Then, the third lifting cylinder 45 drives the door width alignment support 34 to rise, so that the lower end of the cloth is located between the left pull rod and the right pull rod. Then, the left pull rod cylinder 40 is extended, and the right pull rod cylinder is retracted, so that the left pull rod drives the cloth at the position of the left pull rod to move forward, and the right pull rod drives the cloth at the position of the right pull rod to move backward. Finally, the lead screw motor 36 is driven, so that the left pull rod moves to the right along the base slide rail 39, and the right pull rod moves to the left along the base slide rail 39, thereby folding the cloth to form an "S" shape, so as to reduce the width of the cloth. Then, the folded cloth lower end is clamped by using the sewing tensioning device 4.

[0093] In actual processing, the width of the first material head in the first material frame 1 and the width of the tail material head in the second material frame 2 need to be calculated. If the width of the first material head in the first material frame 1 is larger, the door width alignment assembly 33 folds the first material head in the first material frame 1 to shorten the width of the cloth. When the width of the tail material head in the second material frame 2 is larger, the clamping alignment mechanism 3 clamps the tail material head in the second material frame 2 to move towards the first material head in the first material frame 1, until it moves above the door width alignment assembly 33, and then the door width alignment assembly 33 is used to fold the tail material head.

[0094] In the process of longitudinal movement of the sewing machine 24 along the sewing machine guide rail 47, in order to avoid the spatial position interference between the material head clamping mechanism and the sewing machine 24, in the actual process of sewing the cloth, the function of loosening the clamping of the material head of the plurality of material head clamping mechanisms located in the front side of the sewing machine 24 and sequentially descending by the first lifting cylinder 18 needs to be realized. In order to meet the above function, as a supplement to the technical scheme of the above embodiment, a proximity switch is further included, and the proximity switch is arranged on the lifting platform 19, and a metal protrusion matched with the proximity switch is arranged on the support platform 23 of the sewing machine assembly 7. When the proximity switch on the material head clamping mechanism located in the front side of the sewing machine 24 detects the metal protrusion, the bidirectional cylinder 20 of the material head clamping mechanism drives the first clamping piece 21 and the second clamping piece 22 to separate, loosens the clamping of the material head, and then the piston rod of the first lifting cylinder 18 is retracted to drive the material head clamping mechanism to descend. Through the above setting, the first cylinder I, the first cylinder II, the first cylinder III, the first cylinder IV, and the first cylinder V descend in turn, preventing position interference with the sewing machine assembly 7.

[0095] As a preferred technical scheme of the present application, the sewing machine assembly 7 further comprises a cloth guide wheel device 49 arranged on the support platform 23 of the sewing machine assembly 7 and located above the cloth guide platform 25, which is used in cooperation with the cloth guide platform 25 to clamp the cloth and make the material head stably input into the sewing machine 24, thereby improving the sewing quality of the sewing machine 24.

[0096] The cloth guide wheel device 49 comprises a cloth guide wheel driving motor 50, a support plate 51, a cloth guide wheel, and a rotating shaft. The support plate 51 is provided with two groups and is arranged in parallel. The rotating shaft is arranged between the two groups of support plates 51 and is connected with the support plates 51 through bearings, so that the rotating shaft can rotate freely. The cloth guide wheel is arranged on the rotating shaft.

[0097] The cloth guide wheel driving motor 50 is arranged on the support platform 23 and connected with the rotating shaft, and is used to drive the cloth guide wheel to rotate.

[0098] Through the design of the cloth guide wheel, the material head can be clamped and vertical pressure can be applied to ensure the sewing quality.

[0099] In the above working state, the clamp head bottom clamp device can provide stable transverse tension for the cloth, but in the actual working process, since the multiple sets of clamp head clamping mechanisms are loosened one by one, the cloth about to enter the sewing machine 24 for sewing lacks the transverse force applied by the clamp, and the outer surface of the cloth guide wheel is mostly smooth joint, the longitudinal force applied to the cloth is limited, and the cloth is prone to retract and rebound before entering the sewing machine 24, which affects the sewing quality. In order to ensure that the cloth has stable tension in the transverse and longitudinal directions when entering the sewing machine 24, as a preferred technical solution of the present application, the cloth guide wheel device 49 further comprises a ratchet wheel, which is arranged on the rotating shaft and has two sets arranged on the two sides of the cloth guide wheel. The outer surface of the ratchet wheel is provided with a sharp protrusion for penetrating into the cloth, and when the cloth moves to the front side of the ratchet wheel of the cloth guide wheel device 49, the ratchet wheel can rotate to cooperate with the cloth guide platform 25 to clamp the cloth and apply longitudinal tension to the cloth. The diameter of the ratchet wheel is greater than the diameter of the cloth guide wheel.

[0100] The metal protrusion matched with the proximity switch is located on the left side of the cloth guide wheel device 49, so that when the cloth to be sewn is located between the cloth guide wheel device 49 and the cloth guide platform 25, the proximity switch can monitor the metal protrusion to drive the piston rod of the first lifting cylinder 18 to retract.

[0101] Through the above arrangement, before the clamp head clamping mechanism located on the front side of the sewing machine assembly 7 is driven to descend by the first lifting cylinder 18, the cloth guide platform 25 can cooperate with the cloth guide wheel device 49 to press the clamp head, and the transverse and longitudinal tension of the cloth to be sewn is provided by the cloth guide platform 25 and the cloth guide wheel device 49. The cloth guide platform 25 and the cloth guide wheel device 49 apply longitudinal tension to the clamp head, and at the same time, the ratchet wheel can prevent the cloth from rebounding, indirectly maintaining the transverse tension provided by the clamp head clamping mechanism before the cloth guide wheel device 49 is pressed down. After completing the pressing action of the cloth to be sewn by the cloth guide platform 25 and the cloth guide wheel device 49, the piston rod of the bi-directional cylinder on the clamp head clamping mechanism extends to separate the first clamping piece 21 and the second clamping piece 22, thereby loosening the clamp on the clamp head. Then the piston rod of the first lifting cylinder 18 for supporting the clamp head clamping mechanism retracts, so that the clamp head clamping mechanism descends to avoid spatial interference during the working process of the sewing machine.

[0102] As a preferred technical solution of the present application, the diameter D 棘 The diameter D 引 of the ratchet wheel is related to the thickness A of the clamp head as follows:

[0103]

[0104] Through the above arrangement, the ratchet wheel can apply longitudinal tension to the material head, and the outer periphery of the thread guide wheel can roll the material head, further improving the sewing quality.

[0105] As a preferred technical solution of the present application, the sewing machine assembly 7 further comprises a lifting support plate 52 and a second lifting cylinder 53. The second lifting cylinder 53 is arranged on the support platform 23 of the sewing machine assembly 7, and the lifting support plate 52 is arranged at the end of the piston rod of the second lifting cylinder 53. The second lifting cylinder 53 drives the lifting support plate 52 to move up and down. The thread guide wheel device 49 and the thread guide wheel driving motor 50 are arranged on the lifting support plate 52. When the sewing machine moves forward until the material head is located between the thread guide wheel device 49 and the thread guide platform 25, the second lifting cylinder 53 retracts and drives the thread guide wheel device 49 to press down, thereby pressing the material head on the thread guide platform 25.

[0106] As a preferred technical solution of the present application, the thread guide wheel device 49 further comprises a first synchronous belt 54, a second synchronous belt 55, a first pulley 56, a second pulley 57, and a third pulley 58.

[0107] The rotating shafts are provided in three groups, namely a first rotating shaft 65, a second rotating shaft 66, and a third rotating shaft 67.

[0108] The thread guide wheels are provided in three groups, namely a first thread guide wheel 59, a second thread guide wheel 60, and a third thread guide wheel 61.

[0109] The ratchets are provided in three groups, namely a first ratchet 62, a second ratchet 63, and a third ratchet 64.

[0110] The diameters of the three groups of thread guide wheels are the same, and the diameters of the three groups of ratchets are the same.

[0111] The first rotating shaft 65, the second rotating shaft 66, and the third rotating shaft 67 are arranged in order from back to front between the two groups of support plates 51. The first thread guide wheel 59, the first pulley 56, and the first ratchet 62 are arranged on the first rotating shaft 65, the second thread guide wheel 60, the second pulley 57, and the second ratchet 63 are arranged on the second rotating shaft 66, and the third thread guide wheel 61, the third pulley 58, and the third ratchet 64 are arranged on the third rotating shaft 67.

[0112] The first synchronous belt 54 is connected between the first pulley 56 and the second pulley 57, and the second synchronous belt 55 is connected between the second pulley 57 and the third pulley 58. The thread guide wheel driving motor 50 is connected with the first rotating shaft 65 to drive the first rotating shaft 65 to rotate.

[0113] The diameters of the first pulley 56, the second pulley 57, and the third pulley 58 satisfy the following relationship:

[0114] D1≤D2≤D3

[0115] D1 is the diameter of the first pulley 56, D2 is the diameter of the second pulley 57, and D3 is the diameter of the third pulley 58.

[0116] Through the above arrangement, when the fabric guide wheel driving motor 50 rotates to drive the first rotating shaft 65 to rotate, the second pulley 57 and the third pulley 58 simultaneously rotate. Since the diameters of the first pulley 56, the second pulley 57, and the third pulley 58 gradually increase, the rotational speeds of the first rotating shaft 65, the second rotating shaft 66, and the third rotating shaft 67 gradually decrease. Since the diameters of the three sets of ratchets are equal, the peripheral rotational linear speeds of the first ratchet 62, the second ratchet 63, and the third ratchet 64 gradually decrease, so that the tension applied to the fabric between the first ratchet 62 and the second ratchet 63 is greater than the tension applied to the fabric between the second ratchet 63 and the third ratchet 64. The longitudinal tension gradually increases when the sewing head enters the sewing machine, ensuring the sewing quality. At the same time, the fabric head bottom chuck device is matched to stably apply the tension, and finally the transverse tension and the longitudinal tension of the fabric head are maintained to be conveyed into the sewing machine for sewing.

[0117] As a preferred technical solution of the present application, the distance between the adjacent fabric head chuck mechanisms is greater than the total length of the fabric guide wheel device 49, so that during the straight line movement of the sewing machine 24 during sewing, the fabric to be sewn maintains stable transverse and longitudinal tension during the entire sewing process when the fabric head clamping mechanisms sequentially descend and release the fabric head, thereby realizing automatic fabric guiding and sewing with high quality and high efficiency.

[0118] The present application also discloses a use method of the flat flexible fabric guiding and sewing mechanism, comprising the following steps:

[0119] S1. The upper chuck I 29 and the upper chuck II 30 of the first fabric head clamping mechanism 10 of the clamping alignment mechanism 3 are used to find the edge and measure the width of the first fabric head in the first fabric frame 1, and the first fabric head width data is obtained. Then the first fabric head is clamped, and the upper chuck I 29 and the upper chuck II 30 of the tail fabric head clamping mechanism 11 are used to find the edge and measure the width of the tail fabric head in the second fabric frame 2, and the tail fabric head width data is obtained. Then the tail fabric head is clamped.

[0120] S2. The lower end edges of the first fabric head and the tail fabric head are adjusted. Taking the first fabric head as an example, the upper chuck I 29 and the upper chuck II 30 of the first fabric head clamping mechanism 10 are used to clamp the first fabric head. In this state, the first fabric head is located below the first photoelectric sensor and the second photoelectric sensor, which can block the light source. The upper chuck I 29 is raised to slowly raise the left part of the first fabric head until the first photoelectric sensor detects the light source. Then the upper chuck II 30 is raised to slowly raise the right part of the first fabric head until the second photoelectric sensor detects the light source.

[0121] S3. The first material head clamping mechanism 10 of the clamping alignment mechanism 3 adjusts the position of the first material head through each clamp, and the tail material head clamping mechanism 11 adjusts the position of the tail material head through each clamp, so that the vertical center lines of the first material head and the tail material head are aligned. According to the width data of the first material head and the tail material head, if the difference between them is within a set range, for example, within 5 mm, then the width alignment assembly 33 does not need to fold the cloth;

[0122] When the width of the first material head is too large, the width alignment assembly 33 folds the first material head. First, the left pull rod cylinder 40 retracts, and the right pull rod cylinder extends. Then, the third lifting cylinder 45 drives the width alignment bracket 34 to rise, so that the lower end of the cloth is located between the left pull rod and the right pull rod. Then, the left pull rod cylinder 40 extends, and the right pull rod cylinder retracts, so that the left pull rod drives the cloth at the position of the left pull rod to move forward, and the right pull rod drives the cloth at the position of the right pull rod to move backward. Finally, the lead screw motor 36 is driven to move the left pull rod to the right along the base slide rail 39, and the right pull rod to the left along the base slide rail 39, so as to fold the cloth to form an "S" shape. At the same time, the upper clamp I 29, the upper clamp II 30, the lower clamp I 31, and the lower clamp II 32 of the first material head clamping mechanism 10 move in cooperation with the width alignment assembly 33, so as to reduce the width of the first material head, and make the width of the tail material head consistent with that of the first material head and the side edges aligned. After the cloth folding is completed, the tail material head clamping mechanism 11 clamps the tail material head to move horizontally to the first material head clamping mechanism 10 through the tail material head cloth feeding guide rail 9, so that the first material head and the tail material head are in a state of adhesion.

[0123] When the width of the tail material head is too large, the tail material head clamping mechanism 11 clamps the tail material head to move horizontally above the width alignment assembly 33, and the width alignment assembly 33 folds the tail material head;

[0124] Then, the piston rod of the first lifting cylinder 18 of the sewing tensioning device 4 is used to rise and clamp the lower end of the joint material head.

[0125] Then, the lower clamp I 31 and the lower clamp II 32 of the tail material head clamping mechanism 11 and the lower clamp I 31 and the lower clamp II 32 of the first material head clamping mechanism 10 are released to clamp the joint material head and reset. At this time, if the width alignment assembly 33 participates in the cloth folding process, the third lifting cylinder 45 of the width alignment assembly 33 is retracted and reset.

[0126] S4. The joint material head clamping mechanism is driven by the horizontal moving platform 15 of the sewing tensioning device 4 to move to the left side of the tensioning rod 5, and the piston rod of the first lifting cylinder 18 is synchronously raised. The joint material head clamping mechanism is raised to the same height as the tensioning rod 5, so that the joint material head located between the joint material head clamping mechanism and the tensioning rod 5 is in a tensioning state. The joint material head clamping mechanism cooperates with the tensioning rod 5 to apply a transverse tensioning force to the joint material head;

[0127] S5. Sewing machine drive motor 28 of sewing machine assembly 7 works to drive support platform 23 to slide along sewing machine guide rail 47, so that sewing machine 24 moves towards the material head direction. When the metal protrusion is recognized by the proximity switch, the second lifting cylinder 53 retracts, driving the thread guide wheel device 49 to press down, so that the material head is pressed tightly on the thread guide platform 25. Then the piston rod of the two-way cylinder 20 on the material head clamping mechanism extends, so that the first clamping piece 21 and the second clamping piece 22 are separated, and the clamping of the material head is released. Then the piston rod of the first lifting cylinder 18 used to support the material head clamping mechanism retracts, so that the material head clamping mechanism is lowered. Then the first rotating shaft is driven to rotate by the thread guide wheel drive motor 50, and the second rotating shaft 66 and the third rotating shaft 67 are driven to rotate by the first synchronous belt and the second synchronous belt of the thread guide wheel device 49, so that the material head is clamped by the thread guide platform 25. In this process, the first thread guide wheel 59, the second thread guide wheel 60 and the third thread guide wheel 61 roll the material head, and the transverse and longitudinal tension of the material head is provided by the thread guide platform 25 and the thread guide wheel device 49. The thread guide wheel device 49 and the thread guide platform 25 apply longitudinal tension to the material head, and at the same time, the ratchet can prevent the cloth from rebounding, so as to indirectly maintain the transverse tension provided by the material head clamping mechanism. The transverse and longitudinal tension of the material head is provided by the thread guide platform and the thread guide wheel device, and the material head is sewn during the forward sliding process of the sewing machine 24, and the cutter cuts the material head that has been sewn. With the continuous forward movement of the sewing machine 24, the piston rods of the plurality of first lifting cylinders 18 are retracted in sequence.

[0128] S6. After the sewing of the material head is completed, the clamping alignment mechanism 3, the sewing tensioning device 4 and the sewing machine assembly 7 are all reset.

[0129] The above is only a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered by the protection scope of the present application.

Claims

1. A fully automatic aligning and stitching device for flat flexible material, characterized in that, The utility model relates to a sewing machine, including material frame, clamping alignment mechanism (3), suture tensioning device (4), tensioning rod (5), sewing machine support (6), sewing machine assembly (7); The material frame comprises a first material frame (1) and a second material frame (2) for accommodating cloth, the first material frame (1) is located at the right side of the second material frame (2), the first material head of the cloth in the first material frame (1) is arranged on the left side frame body of the first material frame (1), and the end of the first material head is located below the upper edge of the left side frame body of the first material frame (1); the tail material head of the cloth in the second material frame (2) is arranged on the right side frame body of the second material frame (2), and the end of the tail material head is located below the upper edge of the right side frame body of the second material frame (2); The clamping alignment mechanism (3) is arranged between the first material frame (1) and the second material frame (2) and comprises a clamping alignment frame (8), a tail material head cloth feeding guide rail (9), a first material head clamping mechanism (10) and a tail material head clamping mechanism (11) arranged on the clamping alignment frame (8); the first material head clamping mechanism (10) is located at the right side of the tail material head cloth feeding guide rail (9); the tail material head clamping mechanism (11) is arranged on the tail material head cloth feeding guide rail (9) and can slide on the tail material head cloth feeding guide rail (9) towards or away from the first material head clamping mechanism (10); the tail material head clamping mechanism (11) and the first material head clamping mechanism (10) each comprise a first clamp for clamping cloth and an edge searching and distance measuring sensor arranged on the first clamp; The tensioning rod (5) is in a rod shape and is arranged between the first material frame (1) and the second material frame (2) and at the left side of the first material head clamping mechanism (10); The suture tensioning device (4) is arranged between the first material frame (1) and the second material frame (2) and comprises a clamp base (12), a transverse sliding rail (14), a transverse platform (15), a fixed platform (17), a first lifting cylinder (18) and a combined material head clamping mechanism; the clamp base (12) is arranged below the tensioning rod (5), the transverse sliding rail (14) is arranged on the clamp base (12), the transverse platform (15) is arranged on the transverse sliding rail (14), the fixed platform (17) is arranged on the transverse platform (15), the first lifting cylinder (18) is arranged on the fixed platform (17), and the first lifting cylinder (18) is arranged in at least two groups and in a longitudinal direction; the end of the piston rod of each group of first lifting cylinders (18) is provided with a combined material head clamping mechanism, the combined material head clamping mechanism comprises a second clamp, the second clamp clamps the first material head and the tail material head, and the first material head and the tail material head are combined to form a combined material head; The sewing machine support (6) is located at the left side of the tensioning rod (5) and comprises a support main body (46), a sewing machine guide rail (47) and a longitudinal rack (48); the sewing machine guide rail (47) and the longitudinal rack (48) are arranged on the support main body (46). The sewing machine assembly (7) comprises a support platform (23), a sewing machine (24), a fabric guiding platform (25) and a sewing machine driving motor (28), the support platform (23) is arranged on a sewing machine guide rail (47), the sewing machine driving motor (28) is arranged on the support platform (23) and the sewing machine driving motor (28) is engaged with a longitudinal moving rack (48) through a gear, the sewing machine (24) is arranged on the support platform (23), the fabric guiding platform (25) is arranged on the support platform (23) and located at the front side of the presser foot of the sewing machine (24), the fabric guiding platform (25) is a plate structure, and the front end of the fabric guiding platform (25) is provided with an oblique inclination angle.

2. A full-automatic aligning and sewing device for flat flexible material according to claim 1, characterized in that, The sewing machine assembly (7) is further provided with a cutter for cutting the material head, and the cutter is arranged on the sewing machine (24) and located at one side of the presser foot of the sewing machine (24); The material head clamping mechanism further comprises a lifting platform (19) arranged on the first lifting cylinder (18), and the second clamp comprises a bidirectional cylinder (20), a first clamping piece (21) and a second clamping piece (22), wherein the bidirectional cylinder (20) is arranged on the lifting platform (19), the bidirectional cylinder (20) has two piston rods capable of moving in opposite directions, the first clamping piece (21) is arranged on the first piston rod, and the second clamping piece (22) is arranged on the second piston rod.

3. A full-automatic aligning and sewing device for flat flexible material according to claim 2, characterized in that, The first material head clamping mechanism (10) and the tail material head clamping mechanism (11) of the clamping alignment mechanism (3) are the same in structure and each comprises a clamp driving device, a clamping support, a first clamp and an edge searching and distance measuring sensor, and the clamp driving device is arranged on the clamping support; The first clamp comprises an upper clamp I (29), an upper clamp II (30), a lower clamp I (31) and a lower clamp II (32), each clamp is connected with the clamping support through the clamp driving device, the clamp driving device comprises a lifting mechanism and a longitudinal moving mechanism, the clamp is arranged on the longitudinal moving mechanism, the longitudinal moving mechanism is used for driving the clamp to longitudinally move, the longitudinal moving mechanism is arranged on the lifting mechanism, the lifting mechanism is used for driving the longitudinal moving mechanism to vertically move, and the lifting mechanism is arranged on the clamping support; each clamp is provided with an edge searching and distance measuring sensor; The fabric positioning sensor group comprises two groups, a first fabric positioning sensor group is arranged below the first material head, and a second fabric positioning sensor group is arranged below the tail material head, and the fabric positioning sensor group comprises two photoelectric sensors at the same height.

4. A full-automatic aligning and sewing device for flat flexible material according to claim 3, characterized in that, The fabric positioning sensor group comprises two groups, a first fabric positioning sensor group is arranged below the first material head, and a second fabric positioning sensor group is arranged below the tail material head, and the fabric positioning sensor group comprises two photoelectric sensors at the same height. The fabric positioning sensor group comprises two groups, a first fabric positioning sensor group is arranged below the first material head, and a second fabric positioning sensor group is arranged below the tail material head, and the fabric positioning sensor group comprises two photoelectric sensors at the same height. The door width alignment support (34) is arranged on the third lifting cylinder (45), the lead screw motor (36), the opposite synchronous lead screw (35) and the base slide rail (39) are arranged on the door width alignment support (34), the first base (37) and the second base (38) are arranged on the base slide rail (39), the opposite synchronous lead screw (35) is located above the base slide rail (39), and the opposite synchronous lead screw (35) is screwed with the first base (37) and the second base (38); the lead screw motor (36) is connected with the opposite synchronous lead screw (35); The left pull rod cylinder (40) is arranged on the first base (37), and the left pull rod is arranged on the piston rod of the left pull rod cylinder (40); the right pull rod cylinder is arranged on the second base (38), and the right pull rod is arranged on the piston rod of the right pull rod cylinder, the left pull rod includes a right extension part (41) and a first rod-shaped part (42), the right extension part (41) is a plate-shaped structure extending to the right, and the first rod-shaped part (42) is a rod-shaped structure vertically arranged at the right end of the right extension part (41); the right pull rod and the left pull rod are symmetrically arranged and include a left extension part (43) and a second rod-shaped part (44), the left extension part (43) is a plate-shaped structure extending to the left, and the second rod-shaped part (44) is a rod-shaped structure vertically arranged at the right end of the left extension part (43).

5. A full automatic aligning and sewing apparatus for flat flexible material according to claim 2, characterized in that, The glue head clamping mechanism further comprises a proximity switch and a metal protrusion, the proximity switch is arranged on the lifting platform (19), and the metal protrusion is arranged on the support platform (23) of the sewing machine assembly (7); The sewing machine assembly (7) further comprises a thread guide wheel device (49) arranged on the support platform (23) of the sewing machine assembly (7) and located above the thread guide platform (25), the thread guide wheel device (49) comprises a thread guide wheel driving motor (50), a support plate (51), a thread guide wheel, a rotating shaft and a ratchet wheel, the support plate (51) is provided with two groups and is arranged in parallel, the rotating shaft is arranged between the two groups of support plates (51) and connected with the support plates (51) through bearings, the thread guide wheel is arranged on the rotating shaft, and the thread guide wheel driving motor (50) is connected with the rotating shaft; the ratchet wheel is arranged on the rotating shaft, the ratchet wheel is provided with two groups and located on the two sides of the thread guide wheel, the outer surface of the ratchet wheel is provided with a plurality of sharp protrusions, and the diameter of the ratchet wheel is greater than that of the thread guide wheel.

6. A full-automatic aligning and sewing device for flat flexible material according to claim 5, characterized in that, The relationship among the diameter of the ratchet wheel, the diameter of the thread guide wheel and the thickness A of the glue head is: In the above equation, D 棘 is the diameter of the ratchet, D 引 is the diameter of the puller, and A is the thickness of the compound head.

7. A full automatic aligning and sewing apparatus for flat flexible material according to claim 5, characterized in that, The sewing machine assembly (7) further comprises a lifting support plate (52) and a second lifting cylinder (53), the second lifting cylinder (53) is arranged on the support platform (23) of the sewing machine assembly (7), and the lifting support plate (52) is arranged at the end of the piston rod of the second lifting cylinder (53); the thread guide wheel device (49) and the thread guide wheel driving motor (50) are arranged on the lifting support plate (52).

8. A full automatic aligning and sewing apparatus for flat flexible material according to claim 5, characterized in that, The thread guide wheel device (49) further comprises a first synchronous belt (54), a second synchronous belt (55), a first belt pulley (56), a second belt pulley (57) and a third belt pulley (58). The rotating shafts are provided with three groups, respectively, first rotating shaft (65), second rotating shaft (66), third rotating shaft (67); The cloth guide wheels are provided with three groups, respectively, first cloth guide wheel (59), second cloth guide wheel (60), third cloth guide wheel (61); The ratchets are provided with three groups, respectively, first ratchet (62), second ratchet (63), third ratchet (64); The diameters of the three groups of cloth guide wheels are the same, and the diameters of the three groups of ratchets are the same; The first rotating shaft (65), the second rotating shaft (66), and the third rotating shaft (67) are sequentially arranged between the two groups of support plates (51) from back to front, the first cloth guide wheel (59), the first belt wheel (56), and the first ratchet (62) are arranged on the first rotating shaft (65), the second cloth guide wheel (60), the second belt wheel (57), and the second ratchet (63) are arranged on the second rotating shaft (66), and the third cloth guide wheel (61), the third belt wheel (58), and the third ratchet (64) are arranged on the third rotating shaft (67), the first synchronous belt (54) is connected between the first belt wheel (56) and the second belt wheel (57), the second synchronous belt (55) is connected between the second belt wheel (57) and the third belt wheel (58), and the cloth guide wheel driving motor (50) is connected with the first rotating shaft (65); The diameters of the first belt wheel (56), the second belt wheel (57), and the third belt wheel (58) satisfy the following relationship: D1≤D2≤D3 In the above formula, D1 is the diameter of the first belt wheel (56), D2 is the diameter of the second belt wheel (57), and D3 is the diameter of the third belt wheel (58).

9. A full-automatic aligning and sewing device for flat flexible material according to claim 5, characterized in that, The distance between the adjacent two material head clamping mechanisms is greater than the total length of the cloth guide wheel device (49).

10. The method of claim 4, wherein the method further comprises: The method comprises the following steps: S1. The upper clamping head I (29) and the upper clamping head II (30) of the first material head clamping mechanism (10) of the clamping alignment mechanism (3) are used to search the edge and measure the width of the first material frame (1) in the cloth material, and the first material head width data is obtained, then the upper part of the first material head is clamped, and the upper clamping head I (29) and the upper clamping head II (30) of the tail material head clamping mechanism (11) are used to search the edge and measure the width of the tail material head in the cloth material in the second material frame (2), and the tail material head width data is obtained, then the upper part of the tail material head is clamped; S2. The lower end edges of the first material head and the tail material head are adjusted, when the first material head is adjusted, the upper clamping head I (29) and the upper clamping head II (30) of the first material head clamping mechanism (10) are used to clamp the first material head, in this state, the first material head is located below the first photoelectric sensor and the second photoelectric sensor, which can block the light source; the upper clamping head I (29) is raised to slowly raise the left part of the first material head until the first photoelectric sensor detects the light source, then the upper clamping head II (30) is raised to slowly raise the right part of the first material head until the second photoelectric sensor detects the light source; S3. The first material head clamping mechanism (10) of the clamping alignment mechanism (3) adjusts the position of the first material head through each clamp, and the tail material head clamping mechanism (11) adjusts the position of the tail material head through each clamp, so that the vertical center lines of the first material head and the tail material head are aligned. According to the width data of the first material head and the tail material head, the difference between them is within a set range, within 5mm, and the width alignment assembly (33) is not required to fold the cloth; When the width of the first material head is too large, the width alignment assembly (33) folds the cloth of the first material head. First, the left pull rod cylinder (40) is retracted, and the right pull rod cylinder is extended. Then the third lifting cylinder (45) drives the width alignment support (34) to rise, so that the lower end of the cloth is located between the left pull rod and the right pull rod. Then the left pull rod cylinder (40) is extended, and the right pull rod cylinder is retracted, so that the left pull rod drives the cloth at the position of the left pull rod to move forward, and the right pull rod drives the cloth at the position of the right pull rod to move backward. Finally, the drive lead screw motor (36) is driven to move the left pull rod rightward along the base slide rail (39), and the right pull rod leftward along the base slide rail (39), so as to fold the cloth to form a "S" shape. At the same time, the upper clamp I (29), the upper clamp II (30), the lower clamp I (31), and the lower clamp II (32) of the first material head clamping mechanism (10) move in cooperation with the width alignment assembly (33), so as to reduce the width of the first material head, and make the width of the tail material head consistent with that of the first material head and the side edges aligned. After the cloth folding is completed, the tail material head clamping mechanism (11) clamps the tail material head to move horizontally to the first material head clamping mechanism (10), so that the first material head and the tail material head are in a state of adhesion; When the width of the tail material head is too large, the tail material head clamping mechanism (11) clamps the tail material head to move horizontally above the width alignment assembly (33), and the width alignment assembly (33) folds the cloth of the tail material head; Then the piston rod of the first lifting cylinder (18) of the sewing tensioning device (4) is raised to clamp the lower end of the joint material head; Then the lower clamp I (31) and the lower clamp II (32) of the tail material head clamping mechanism (11) and the lower clamp I (31) and the lower clamp II (32) of the first material head clamping mechanism (10) are loosened to clamp the joint material head and reset. At this time, if the width alignment assembly (33) participates in the cloth folding process, the third lifting cylinder (45) thereof is retracted and reset; S4. The joint material head clamping mechanism is driven by the horizontal moving platform (15) of the sewing tensioning device (4) to move to the left side of the tensioning rod (5), and the piston rod of the first lifting cylinder (18) is synchronously raised. The joint material head clamping mechanism is raised to the same height as the tensioning rod (5), so that the joint material head located between the joint material head clamping mechanism and the tensioning rod (5) is in a tensioning state. The joint material head clamping mechanism cooperates with the tensioning rod (5) to apply a transverse tensioning force to the joint material head; S5. The sewing machine driving motor (28) of the sewing machine assembly (7) works to drive the support platform (23) to slide along the sewing machine guide rail (47), so that the sewing machine (24) moves to the joint material head to sew the joint material head; S5. After the joint material head is sewn, the clamping alignment mechanism (3), the sewing tensioning device (4), and the sewing machine assembly (7) are all reset.

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