A kind of sewing device and method based on hat brim

Abstract

The present invention discloses a sewing device and method based on a hat brim, belonging to the technical field of hat brim sewing. The sewing device based on a hat brim includes a sewing machine frame and a sewing machine head and a shuttle box fixedly connected to the sewing machine frame, wherein the shuttle box is arranged below the needle at the output end of the sewing machine head, and further includes: a brim alignment table fixedly mounted on the sewing machine frame; a brim conveying assembly fixedly mounted on the sewing machine frame; a second mounting plate fixedly mounted on the top of the brim conveying assembly; the present invention effectively smoothes the surface of the brim through a smoothing assembly to avoid the appearance of wrinkles, thereby improving the sewing quality of the brim, without the need for manual smoothing, and avoiding manual smoothing to reduce the sewing efficiency of the brim. In addition, through the cooperation of the clamping assembly and the smoothing assembly, the situation that the brim cannot fall off the clamping assembly during material discharge can be avoided, thereby improving the material discharge effect.

Description

Technical Field

[0001] The invention relates to the technical field of hat brim sewing, in particular to a sewing device based on a hat brim. Background Art

[0002] Brim sewing refers to sewing the outer layer, inner lining layer and padding layer of the brim of the hat together using sewing equipment such as a sewing machine, so as to fix the outer layer, inner lining layer and padding layer.

[0003] For example, the patent document with application number CN201910776561.3 published on November 15, 2019, a sewing device based on the brim of a hat includes a protective frame, an installation panel, a sliding connecting block, a fixed block, a protective outer wall, a limit block, a machine mounting base plate, a support column, a support block, a pulley, an anti-slip wooden block, a movable flap, a controllable sewing machine, a hat-shaped fixing block, a disassembly column, a positioning plate, a connecting member, a rotating inner column, a pulley support, a perforated sliding column and a slider. The beneficial effects of the present invention are as follows: the top of the hat-shaped fixing block is semicircular, and a fixing plate is provided on the edge; the rotating inner column is located in the dismantling column; the hat-shaped fixing block is rotatably connected to the dismantling column through a sliding ring pattern; the pulley is connected to the bottom end of the supporting block through a pulley support and is rotatably connected to the perforated sliding column; the positioning plate enables the dismantling column to be slidably connected to the mounting panel below; the slider is fixed at the connection between the protective outer wall and the sliding connection block; a slider is provided under the movable flap, and the slider is fixed in the slide rail on the upper bottom surface of the mounting panel.

[0004] Before the above-mentioned sewing equipment sews the outer layer, the inner lining layer and the cushioning layer, it is necessary to manually arrange the outer layer, the inner lining layer and the cushioning layer to make the outer layer taut and the inner lining layer and the cushioning layer flat. The manual arrangement process requires a lot of time and energy and cannot meet the needs of mass production, resulting in low production efficiency. In order to improve the sewing efficiency of the brim of the hat, a sewing equipment based on the brim of the hat is proposed. Summary of the invention

[0005] The invention is to solve the problem in the prior art that the hat brim needs to be leveled manually, and proposes a sewing device based on the hat brim.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A sewing device based on a hat brim comprises a sewing machine frame and a sewing machine head and a shuttle box fixedly connected to the sewing machine frame, wherein the shuttle box is arranged below the needle at the output end of the sewing machine head, and further comprises: a brim alignment table fixedly mounted on the sewing machine frame; a brim conveying assembly fixedly mounted on the sewing machine frame; a second mounting plate fixedly mounted on the top of the brim conveying assembly; a clamping assembly, wherein a smoothing assembly is arranged on the clamping assembly, and when the clamping assembly fixes the brim, the smoothing assembly presses the brim from above the brim and moves from the middle of the brim to both sides of the brim, and when the clamping assembly is opened, the smoothing assembly pushes the sewn brim to the clamping assembly.

[0008] As a preferred embodiment of the present invention: the sewing machine frame includes a frame body and a universal locking wheel fixedly connected to the bottom of the frame body, a blanking hole is opened on the sewing machine frame, a placement plate is fixedly connected to the sewing machine frame, the placement plate is arranged below the blanking hole, the placement plate is used to place a collection box, and the sewn hat brim falls into the collection box through the blanking hole.

[0009] As a preferred embodiment of the present invention: an alignment plate is fixed on the top of the brim alignment platform, and the alignment plate is provided in two groups, which are respectively abutted against the side edges of the brim on both sides; a first slot and a second slot are provided on the brim alignment platform, and the second slot is provided in two groups, and the two groups of the second slots are symmetrically arranged on both sides of the first slot.

[0010] As a preferred embodiment of the present invention: the clamping assembly includes a cylinder arm fixedly connected to the second mounting plate, the lifting end of the cylinder arm is fixedly connected to a connecting rod, the bottom of the connecting rod is fixedly connected to an upper clamping plate, and the second mounting plate is fixedly connected to a lower clamping plate and a lower clamping rod, when the clamping assembly clamps the brim of the hat, the lower clamping plate is inserted into the first slot, and the lower clamping rod is inserted into the second slot.

[0011] As a preferred embodiment of the present invention: the smoothing assembly includes a connecting block fixedly connected to the connecting rod, both ends of the connecting block are rotatably connected to connecting rods, and upper clamping rods are fixedly connected to two groups of connecting rods. When the clamping assembly completes fixing the brim of the hat, the upper clamping rod is located directly above the lower clamping rod.

[0012] As a preferred embodiment of the present invention: both groups of connecting rods are rotatably connected with hinge blocks, and both groups of hinge blocks are fixedly connected with tension springs, and the tension springs are fixedly connected to the connecting rods.

[0013] As a preferred embodiment of the present invention: the brim transport assembly includes a lateral moving part and a longitudinal moving part, wherein the lateral moving part includes a first guide rail fixedly connected to the sewing machine frame, a second guide rail is slidably connected to the first guide rail, a first screw rod is rotatably connected to the first guide rail, a first motor is fixedly connected to the first guide rail, an output end of the first motor is fixedly connected to the first screw rod, and the first screw rod is threadedly connected to the second guide rail.

[0014] As a preferred embodiment of the present invention: the longitudinal moving part includes a mounting frame slidably connected to the second guide rail, a second screw rod is rotatably connected to the second guide rail, the second screw rod is threadedly connected to the mounting frame, a second motor is fixedly connected to the second guide rail, the output end of the second motor is fixedly connected to the second screw rod, and the second mounting plate is fixedly connected to the mounting frame.

[0015] As a preferred embodiment of the present invention: a first laser ranging sensor and a second laser ranging sensor are fixedly connected to the mounting frame, the first laser ranging sensor and the second laser ranging sensor are vertically arranged, a measuring board is fixedly connected to the sewing machine frame, the measuring board is "L" shaped, and the first laser ranging sensor and the second laser ranging sensor control the horizontal position of the brim through two vertical plate surfaces of the measuring board.

[0016] A method for sewing a hat brim comprises the following steps:

[0017] Step 1: Place the brim of the hat on the brim alignment table and align it using the alignment board;

[0018] Step 2: The upper clamping plate is driven upwards to separate from the lower clamping plate by the cylinder arm, and the upper clamping rod is driven upwards to separate from the lower clamping rod at the same time;

[0019] Step 3: driving the lower clamping plate to be inserted into the first slot, driving the lower clamping rod to be inserted into the second slot, and driving the second mounting plate to abut against the brim alignment platform;

[0020] Step 4: Use the cylinder arm to drive the upper clamping plate and the upper clamping rod to move downward until the upper clamping rod moves to the top of the lower clamping rod;

[0021] Step 5: The brim of the hat is carried to the middle of the sewing machine head and the shuttle box by the brim carrying assembly, and the brim of the hat is sewn by the sewing machine head and the shuttle box;

[0022] Step 6: Use the brim transport assembly to transport the brim to the unloading hole. The cylinder arm drives the upper clamping plate to separate from the lower clamping plate. During the separation process, the upper clamping rod moves to the middle position to push the brim off the clamping assembly.

[0023] Compared with the prior art, the present invention provides a sewing device based on a hat brim, which has the following beneficial effects:

[0024] 1. The sewing device based on the hat brim can effectively smooth the surface of the hat brim through the smoothing component to avoid the appearance of wrinkles, thereby improving the sewing quality of the hat brim, without the need for manual smoothing, thus avoiding the reduction of the sewing efficiency of the hat brim due to manual smoothing. In addition, through the cooperation of the clamping component and the smoothing component, the situation that the hat brim cannot fall off the clamping component during material discharge can be avoided, thereby improving the material discharge effect;

[0025] 2. The hat brim sewing equipment realizes automatic control of the brim during the sewing process through the coordinated operation of the intelligent control screen and various components, including the adjustment of the brim position, clamping and fixing, and smoothing operations, thereby improving production efficiency and sewing quality;

[0026] 3. This sewing equipment based on the hat brim can achieve precise control of the position of the brim with the assistance of equipment such as laser ranging sensors, ensure the accurate alignment of the brim during the sewing process, and improve product quality and consistency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A three-dimensional schematic diagram of a hat brim sewing device proposed by the present invention Figure 1 ;

[0028] Figure 2 A sewing device based on a hat brim proposed by the present invention Figure 1 The structural diagram of part A in the figure;

[0029] Figure 3 A three-dimensional schematic diagram of a hat brim sewing device proposed by the present invention Figure 2 ;

[0030] Figure 4 This is a structural schematic diagram of a hat brim sewing equipment mounting frame proposed by the present invention;

[0031] Figure 5 A structural schematic diagram of a hat brim conveying assembly of a hat brim sewing device proposed by the present invention;

[0032] Figure 6 This is a structural schematic diagram of a smoothing component of a hat brim sewing device proposed by the present invention;

[0033] Figure 7 A schematic diagram of the structure of a clamping assembly of a sewing device based on a hat brim proposed by the present invention;

[0034] Figure 8A structural schematic diagram of a brim alignment platform of a hat brim sewing device proposed by the present invention;

[0035] Fig. 9 This is a side distribution diagram of a clamping rod and a lower clamping plate on a sewing device based on a hat brim proposed by the present invention.

[0036] In the figure: 1. sewing machine frame; 11. sewing machine head; 12. shuttle box; 13. first mounting plate; 14. intelligent control screen; 15. blanking hole; 16. placement plate; 17. universal locking wheel; 2. brim alignment table; 21. alignment plate; 22. first slot; 23. second slot; 3. lateral moving part; 31. first guide rail; 32. first screw rod; 33. first motor; 34. second guide rail; 4. longitudinal moving part; 41. mounting frame; 42. second screw rod; 43. second motor; 44. second mounting plate; 5. first laser ranging sensor; 51. second laser ranging sensor; 52. measuring plate; 6. cylinder arm; 61. connecting rod; 62. upper clamping plate; 63. lower clamping plate; 64. lower clamping rod; 65. connecting block; 66. connecting rod; 67. upper clamping rod; 68. hinge block; 69. tension spring. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Example: Refer to Figure 1-Figure 9 A sewing device based on a hat brim comprises a sewing machine frame 1 and a sewing machine head 11 and a shuttle box 12 fixedly connected to the sewing machine frame 1, the shuttle box 12 is arranged below the needle at the output end of the sewing machine head 11, a first mounting plate 13 is fixedly mounted on the sewing machine frame 1, and an intelligent control screen 14 is fixedly mounted on the first mounting plate 13, and also comprises: a brim alignment table 2, fixedly mounted on the sewing machine frame 1; a brim conveying assembly, fixedly mounted on the sewing machine frame 1; a second mounting plate 44, fixedly mounted on the top of the brim conveying assembly; a clamping assembly, a smoothing assembly is arranged on the clamping assembly, when the clamping assembly fixes the brim, the smoothing assembly presses the brim from above the brim and moves from the middle of the brim to both sides of the brim.

[0040] When in use, the brim transporting assembly is controlled by the intelligent control screen 14 to control the horizontal position of the clamping assembly, and then the position of the clamping assembly and the brim clamped and fixed by the clamping assembly is controlled. The brim is moved horizontally by the brim transporting assembly, the contact position between the brim and the needle of the sewing machine head 11 is controlled, and the movement trajectory of the brim is controlled to sew the brim.

[0041] When the clamping component takes the material, the clamping component is inserted into the brim alignment table 2, and then the brim is clamped and fixed. During this process, the smoothing component smoothes the surface of the brim to avoid wrinkles on the brim surface that affect the sewing of the brim, thereby improving the quality of the brim sewing. There is no need for manual smoothing, which improves smoothing efficiency and reduces labor costs.

[0042] Reference Figure 1 The sewing machine frame 1 includes a frame body and a universal locking wheel 17 fixedly connected to the bottom of the frame body. A blanking hole 15 is opened on the sewing machine frame 1. A placing plate 16 is fixedly connected to the sewing machine frame 1. The placing plate 16 is arranged below the blanking hole 15. The placing plate 16 is used to place a collection box. The sewn hat brim falls into the collection box through the blanking hole 15.

[0043] Among them, the universal locking wheel 17 can not only facilitate the movement of the device, but also fix the device by locking the wheels. In addition, the collection box is placed on the placement plate 16 and cooperates with the blanking hole 15 to facilitate the access to the sewn brim.

[0044] Reference Figure 5-Figure 8 A positioning plate 21 is fixed on the top of the brim alignment platform 2. The positioning plate 21 is provided with two groups, which are respectively against the side edges of the brim on both sides, so as to complete the alignment of the left and right sides of the brim; a first slot 22 and a second slot 23 are provided on the brim alignment platform 2. The second slot 23 is provided with two groups. The two groups of second slots 23 are symmetrically arranged on both sides of the first slot 22. When aligning the brim, the side of the brim provided with the crescent groove passes over the slot. When clamping, the brim is driven by the second mounting plate 44. The brim moves so that the brim is against the second mounting plate 44, and cooperates with the alignment plate 21 to complete the alignment of the brim. The clamping assembly includes a cylinder arm 6 fixedly connected to the second mounting plate 44, and the lifting end of the cylinder arm 6 is fixedly connected to a connecting rod 61, and the bottom of the connecting rod 61 is fixedly connected to an upper clamping plate 62. The second mounting plate 44 is fixedly connected to a lower clamping plate 63 and a lower clamping rod 64. When the clamping assembly clamps the brim, the lower clamping plate 63 is inserted into the first slot 22, and the lower clamping rod 64 is inserted into the second slot 23.

[0045] When the clamping assembly is used to clamp the brim on the alignment platform 2, the lower clamping plate 63 is inserted into the first slot 22, and the lower clamping rod 64 is inserted into the second slot 23, so that the clamping mechanism is inserted into the bottom of the brim, which is convenient for the clamping mechanism to clamp the brim. When the lower clamping plate 63 is inserted into the first slot 22 and the lower clamping rod 64 is inserted into the second slot 23, the cylinder arm 6 is started, and the upper clamping plate 62 is driven down by the cylinder arm 6 to complete the fixation of the brim.

[0046] Reference Figure 5 and Figure 6 The smoothing assembly includes a connecting block 65 fixedly connected to the connecting rod 61, both ends of the connecting block 65 are rotatably connected with connecting rods 66, and the two sets of connecting rods 66 are fixedly connected with upper clamping rods 67. When the clamping assembly completes the fixation of the brim, the upper clamping rod 67 is located directly above the lower clamping rod 64, and the two sets of connecting rods 66 are rotatably connected with hinged blocks 68, and the two sets of hinged blocks 68 are fixedly connected with tension springs 69, which are fixedly connected to the connecting rod 61.

[0047] When the clamping assembly clamps and fixes the brim, the connecting rod 61 descends, and the upper clamping rod 67 first sticks to the top of the brim, and then continues to descend on the connecting rod 61. During this process, the two upper clamping rods 67, which were originally in an "eight" shape, apply a thrust diagonally downward on both sides, and use this thrust to smooth the surface of the brim until the upper clamping rod 67 moves to just above the lower clamping rod 64, the upper clamping plate 62 and the lower clamping plate 63 fix the brim, and the upper clamping rod 67 and the lower clamping rod 64 fix the side of the brim.

[0048] like Fig. 9 As shown, the rear end of the upper clamping rod 67 is located in front of the lower clamping plate 63. When the brim is sewn and the clamping assembly moves the brim to the top of the blanking hole 15, the clamping assembly opens. During the opening process, under the action of the tension spring 69, the tension spring 69 drives the two sets of connecting rods 66 to rotate, so that the two sets of connecting rods 66 move toward the direction of the connecting rod 61. During this process, the upper clamping rod 67 applies a downward thrust to the brim, so that the brim automatically falls into the collection box below the blanking hole 15, and then the connecting rod 61 continues to rise, the connecting rod 66 and the upper clamping plate 62 are no longer closed, and the connecting rod 61 continues to rise, so that the height of the upper clamping rod 67 is higher than the lower clamping rod 64 by more than one centimeter.

[0049] To sum up, in this embodiment, the clamping assembly cooperates with the smoothing assembly to not only fix the brim, but also smooth out the wrinkles on the surface of the brim. Not only that, it can also assist in cutting the brim after sewing to prevent the brim from getting stuck on the clamping assembly.

[0050] Reference Figure 5The brim transport assembly includes a transverse moving part 3 and a longitudinal moving part 4, wherein the transverse moving part 3 includes a first guide rail 31 fixedly connected to the sewing machine frame 1, a second guide rail 34 is slidably connected to the first guide rail 31, a first screw rod 32 is rotatably connected to the first guide rail 31, a first motor 33 is fixedly connected to the first guide rail 31, an output end of the first motor 33 is fixedly connected to the first screw rod 32, and the first screw rod 32 is threadedly connected to the second guide rail 34; the longitudinal moving part 4 includes a mounting frame 41 slidably connected to the second guide rail 34, a second screw rod 42 is rotatably connected to the second guide rail 34, the second screw rod 42 is threadedly connected to the mounting frame 41, a second motor 43 is fixedly connected to the second guide rail 34, an output end of the second motor 43 is fixedly connected to the second screw rod 42, and a second mounting plate 44 is fixedly connected to the mounting frame 41.

[0051] Start the first motor 33, the first motor 33 drives the first screw rod 32 to rotate, the first screw rod 32 drives the second guide rail 34 to slide horizontally, start the second motor 43, the second motor 43 drives the second screw rod 42 to rotate, the second screw rod 42 drives the mounting frame 41 to move longitudinally, and the above structure can drive the clamping assembly to move horizontally, which is convenient for sewing the brim of the hat. At the same time, the torque is controlled by the screw rod, so that the routing of the brim sewing is more precise.

[0052] Reference Figure 4 A first laser ranging sensor 5 and a second laser ranging sensor 51 are fixedly connected to the mounting frame 41. The first laser ranging sensor 5 and the second laser ranging sensor 51 are vertically arranged. A measuring plate 52 is fixedly connected to the sewing machine frame 1. The measuring plate 52 is "L" shaped. The first laser ranging sensor 5 and the second laser ranging sensor 51 control the horizontal position of the brim through the two vertical panels of the measuring plate 52.

[0053] When in use, the distance between the transverse plate and the longitudinal plate of the measuring plate 52 is sensed by two sets of laser distance measuring sensors, thereby determining the position of the mounting frame 41, so that the intelligent control screen 14 can control the position of the brim of the hat.

[0054] In summary, through the coordinated operation between the intelligent control screen 14 and various components, the automatic control of the brim during the sewing process is realized, including the adjustment of the brim position, clamping and fixing, and smoothing operations, thereby improving the production efficiency and sewing quality;

[0055] The smoothing component can effectively smooth the surface of the brim to avoid wrinkles, thereby improving the sewing quality of the brim. No manual smoothing is required, which can reduce the sewing efficiency of the brim. In addition, the clamping component and the smoothing component can cooperate to avoid the brim from falling off the clamping component during nesting, thereby improving the nesting effect.

[0056] With the help of laser distance measuring sensors and other equipment, the position of the brim can be accurately controlled to ensure the accurate alignment of the brim during sewing, thus improving product quality and consistency.

[0057] The device is equipped with a universal locking wheel 17 to facilitate the movement and fixation of the device. At the same time, the collection box and the drop hole 15 on the device are arranged to facilitate the collection and processing of the sewn hat brims, thereby improving the convenience and safety of operation.

[0058] A method for sewing a hat brim comprises the following steps:

[0059] Step 1: Place the brim of the hat on the brim alignment platform 2 and align it through the alignment plate 21;

[0060] Step 2: The upper clamping plate 62 is driven upwards to separate from the lower clamping plate 63 by the cylinder arm 6, and the upper clamping rod 67 is driven upwards to separate from the lower clamping rod 64;

[0061] Step 3: drive the lower clamping plate 63 to be inserted into the first slot 22, drive the lower clamping rod 64 to be inserted into the second slot 23, and drive the second mounting plate 44 to abut against the brim alignment platform 2;

[0062] Step 4: Drive the upper clamping plate 62 and the upper clamping rod 67 downward by the cylinder arm 6 until the upper clamping rod 67 moves to the top of the lower clamping rod 64;

[0063] Step 5: The brim is transported to the middle of the sewing machine head 11 and the shuttle box 12 by the brim transport assembly, and the brim is sewn by the sewing machine head 11 and the shuttle box 12;

[0064] Step 6: The brim is transported to the unloading hole 15 through the brim transport assembly. The cylinder arm 6 drives the upper clamping plate 62 to separate from the lower clamping plate 63. During the separation process, the upper clamping rod 67 moves to the middle position to push the brim off the clamping assembly.

[0065] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hat brim sewing device, comprising a sewing machine frame (1), a sewing machine head (11) and a shuttle box (12) fixedly connected to the sewing machine frame (1), wherein the shuttle box (12) is arranged below the needle at the output end of the sewing machine head (11), and characterized in that: Also includes: A hat brim alignment platform (2) fixedly mounted on the sewing machine frame (1); A hat brim transport assembly, fixedly mounted on the sewing machine frame (1); A second mounting plate (44) fixedly mounted on the top of the hat brim carrying assembly; A clamping assembly, wherein a smoothing assembly is arranged on the clamping assembly. When the clamping assembly fixes the brim, the smoothing assembly presses the brim from above and moves from the middle of the brim to both sides of the brim. When the clamping assembly is opened, the smoothing assembly pushes the sewn brim against the clamping assembly; The sewing machine frame (1) comprises a frame body and a universal locking wheel (17) fixedly connected to the bottom of the frame body, a material drop hole (15) is provided on the sewing machine frame (1), a placement plate (16) is fixedly connected to the sewing machine frame (1), the placement plate (16) is arranged below the material drop hole (15), and a collection box is placed on the placement plate (16), and the sewn hat brim falls into the collection box through the material drop hole (15); An alignment plate (21) is fixed on the top of the brim alignment platform (2), and two groups of the alignment plates (21) are provided, respectively abutting against the side edges of both sides of the brim; The brim alignment platform (2) is provided with a first slot (22) and a second slot (23), and the second slot (23) is provided in two groups, and the two groups of the second slots (23) are symmetrically arranged on both sides of the first slot (22); The clamping assembly comprises a cylinder arm (6) fixedly connected to the second mounting plate (44); a lifting end of the cylinder arm (6) is fixedly connected to a connecting rod (61); the bottom of the connecting rod (61) is fixedly connected to an upper clamping plate (62); a lower clamping plate (63) and a lower clamping rod (64) are fixedly connected to the second mounting plate (44); when the clamping assembly clamps the brim of the hat, the lower clamping plate (63) is inserted into the first slot (22), and the lower clamping rod (64) is inserted into the second slot (23); The smoothing assembly comprises a connecting block (65) fixedly connected to the connecting rod (61), both ends of the connecting block (65) are rotatably connected to connecting rods (66), and upper clamping rods (67) are fixedly connected to two sets of connecting rods (66). When the clamping assembly completes fixing the brim of the hat, the upper clamping rod (67) is located directly above the lower clamping rod (64); The two groups of connecting rods (66) are both rotatably connected to hinge blocks (68), and the two groups of hinge blocks (68) are fixedly connected to tension springs (69), and the tension springs (69) are fixedly connected to the connecting rods (61); The rear end of the upper clamping rod (67) is located in front of the lower clamping plate (63). When the brim is sewn and the clamping assembly moves the brim to above the blanking hole (15), the clamping assembly opens. During the opening process, under the action of the tension spring (69), the tension spring (69) drives the two groups of connecting rods (66) to rotate, so that the two groups of connecting rods (66) move in the direction of the connecting rod (61). During this process, the upper clamping rod (67) applies a downward thrust to the brim, so that the brim automatically falls into the collection box below the blanking hole (15).

2. The hat brim sewing device according to claim 1, characterized in that: The brim transport assembly comprises a transverse moving part (3) and a longitudinal moving part (4), wherein the transverse moving part (3) comprises a first guide rail (31) fixedly connected to the sewing machine frame (1), a second guide rail (34) being slidably connected to the first guide rail (31), a first screw rod (32) being rotatably connected to the first guide rail (31), a first motor (33) being fixedly connected to the first guide rail (31), an output end of the first motor (33) being fixedly connected to the first screw rod (32), and the first screw rod (32) being threadedly connected to the second guide rail (34).

3. The hat brim sewing device according to claim 2, characterized in that: The longitudinal moving part (4) comprises a mounting frame (41) slidably connected to the second guide rail (34); a second screw rod (42) is rotatably connected to the second guide rail (34); the second screw rod (42) is threadedly connected to the mounting frame (41); a second motor (43) is fixedly connected to the second guide rail (34); an output end of the second motor (43) is fixedly connected to the second screw rod (42); and the second mounting plate (44) is fixedly connected to the mounting frame (41).

4. The hat brim sewing device according to claim 3, characterized in that: A first laser distance measuring sensor (5) and a second laser distance measuring sensor (51) are fixedly connected to the mounting frame (41), the first laser distance measuring sensor (5) and the second laser distance measuring sensor (51) being arranged vertically, a measuring board (52) is fixedly connected to the sewing machine frame (1), the measuring board (52) being in an "L" shape, and the first laser distance measuring sensor (5) and the second laser distance measuring sensor (51) control the horizontal position of the brim of the hat via two vertical plates of the measuring board (52).

5. A method for sewing a hat brim, comprising the sewing device based on the hat brim according to claim 1, characterized in that: The following steps are involved: Step 1: Place the brim of the hat on the brim alignment platform (2) and align it using the alignment plate (21); Step 2: The upper clamping plate (62) is driven by the cylinder arm (6) to move upward and separate from the lower clamping plate (63), and the upper clamping rod (67) is driven to move upward and separate from the lower clamping rod (64); Step 3: driving the lower clamping plate (63) to be inserted into the first slot (22), driving the lower clamping rod (64) to be inserted into the second slot (23), and driving the second mounting plate (44) to abut against the brim alignment platform (2); Step 4: Drive the upper clamping plate (62) and the upper clamping rod (67) downward by the cylinder arm (6) until the upper clamping rod (67) moves to the top of the lower clamping rod (64); Step 5: The brim of the hat is transported to the middle of the sewing machine head (11) and the shuttle box (12) by the brim transport component, and the brim of the hat is sewn by the sewing machine head (11) and the shuttle box (12); Step 6: The brim is transported to the unloading hole (15) by the brim transport assembly, and the cylinder arm (6) drives the upper clamping plate (62) and the lower clamping plate (63) to separate. During the separation process, the upper clamping rod (67) moves to the middle position to push the brim off the clamping assembly.

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