Positioning device and sewing machine

Abstract

The invention discloses a positioning device and a sewing machine with the positioning device, and the positioning device comprises a supporting cylinder, a material pressing mechanism, a first positioning mechanism and a second positioning mechanism. The supporting cylinder is cylindrical, the brim is positioned on the supporting cylinder, and a sliding seat is arranged on the outer surface of the supporting cylinder; the pressing mechanism is movably arranged at one end of the supporting cylinder through a sliding seat, and the brim can be attached to the outer surface of the supporting cylinder through the pressing mechanism; the first positioning mechanism is used for adjusting the position of the hat brim in the axis direction of the supporting cylinder; the second positioning mechanisms are located on the two sides of the first positioning mechanism and can align the middle of the hat brim to the top of the supporting cylinder. Through the first positioning mechanism and the second positioning mechanism, the position, located at the top of the supporting cylinder, of the middle of the hat brim is positioned. Through the first positioning mechanism and the second positioning mechanism, the position of the hat brim can be quickly positioned, and the sewing quality can be improved through a high-precision positioning mode while the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewing, and in particular to a positioning device and a sewing machine. Background Art

[0002] In the existing field of sewing machine technology, especially for hat brim sewing machines, traditional hat brim sewing operations rely heavily on manual operation, which not only increases the difficulty of operation, but also makes it difficult for the sewing stitches to meet the requirements of efficient and standard production.

[0003] Although there are already automatic brim sewing equipment that can greatly improve sewing production efficiency, the brim needs to be adjusted and positioned before sewing to ensure accurate and consistent sewing positions. However, the existing equipment cannot adjust and correct the brim when transferring it, which easily causes the sewing position to shift, resulting in unsatisfactory sewing results. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a positioning device that can adjust and correct the position of the brim of a hat so that a sewing machine can sew the brim of the hat.

[0005] The present invention also provides a sewing machine with the positioning device.

[0006] The positioning device according to the first aspect of the present invention is applied to positioning a hat brim, and the positioning device comprises:

[0007] A support tube, wherein the support tube is cylindrical, the brim is positioned on the support tube, the brim can move on the outer surface of the support tube, and a slide seat is provided on the outer surface of the support tube, and the slide seat can slide along the axial direction of the support tube;

[0008] A pressing mechanism, the pressing mechanism is movably arranged at one end of the support tube through the slide seat, the pressing mechanism can fit the brim to the outer surface of the support tube, and the pressing mechanism can slide on the support tube along the axial direction of the support tube so that the brim can slide to a sewing position;

[0009] A first positioning mechanism, the first positioning mechanism is arranged at one end of the support tube, and the first positioning mechanism is used to adjust the position of the brim in the axial direction of the support tube; and

[0010] The second positioning mechanism is arranged on the support tube, the second positioning mechanism is located on both sides of the first positioning mechanism, and the second positioning mechanism can align the middle part of the brim with the top of the support tube.

[0011] The positioning device according to the embodiment of the present invention has at least the following beneficial effects: first, the position of the brim in the axial direction of the support tube is positioned by the first positioning mechanism; then, the middle of the brim is positioned at the top of the support tube by the second positioning mechanism, so that the two sides of the brim are symmetrical; finally, the positioned brim is transported to the sewing position on the support tube by the pressing mechanism. The position of the brim can be quickly positioned by the first positioning mechanism and the second positioning mechanism, and the high-precision positioning method can improve the quality of sewing while improving production efficiency.

[0012] According to some embodiments of the present invention, the first positioning mechanism comprises:

[0013] A butt-pushing plate, the butt-pushing plate is arranged at one end of the slide seat, the lower end of the butt-pushing plate is in contact with the outer surface of the support tube, and one side of the butt-pushing plate can butt against one end of the brim;

[0014] A push rod, the push rod can be raised and lowered in the support tube, the support tube has a first avoidance groove, the extension direction of the first avoidance groove is parallel to the axial direction of the support tube, the push rod is located in the first avoidance groove, the push rod can slide along the extension direction of the first avoidance groove, and the brim is placed between the push plate and the push rod; and

[0015] The first driving component is arranged in the supporting tube, the output end of the first driving component is connected to the push rod, and the first driving component can drive the push rod to rise and fall and slide along the extension direction of the first avoidance groove so that one side of the push rod can push against the other end of the brim.

[0016] According to some embodiments of the present invention, the first driving component includes a horizontal linear module and a vertical linear module, the vertical linear module is arranged on the output end of the horizontal linear module, and the push rod is arranged on the output end of the vertical linear module, the horizontal linear module is used to drive the vertical linear module to slide along the extension direction of the first avoidance groove, and the vertical linear module is used to drive the push rod to rise and fall in the first avoidance groove.

[0017] According to some embodiments of the present invention, the second positioning mechanism includes two positioning components, which are arranged on the outer surfaces of both sides of the support tube, and the positioning components include:

[0018] a second drive assembly, the second drive assembly being disposed on an outer surface of the support cylinder; and

[0019] A positioning plate is arranged on the output end of the second driving assembly, and the second driving assembly is used to drive the positioning plate to abut against two sides of the brim.

[0020] According to some embodiments of the present invention, the positioning plate has a guide portion and an abutment top portion. Along the vertical direction, the guide portion gradually shifts from the outer side of the support tube to the inner side. The lower end of the guide portion is connected to the upper end of the abutment top portion, and the side end of the brim abuts against the abutment top portion.

[0021] According to some embodiments of the present invention, the pressing mechanism comprises:

[0022] a third drive assembly, the third drive assembly being disposed on the slide; and

[0023] A material pressing assembly is arranged on the output end of the third driving assembly, and the third driving assembly is used to drive the material pressing assembly to make the brim fit the outer surface of the supporting tube.

[0024] According to some embodiments of the present invention, the third driving assembly includes a third driving member, the pressing assembly is arranged on the output end of the third driving member, the output direction of the third driving member extends along the axial direction of the support tube, and the third driving member is used to drive the pressing assembly away from or close to the support tube so that the brim can be placed in the positioned position of the support tube.

[0025] According to some embodiments of the present invention, the third driving component includes a first driving member, and the pressing component includes a first pressing member, the first pressing member is arranged on the output end of the first driving member, the first driving member drives the first pressing member to move toward the supporting tube, and the first pressing member can abut against the brim to make the brim fit against the outer surface of the supporting tube.

[0026] According to some embodiments of the present invention, the pressing assembly includes a second pressing piece, which is arranged on both sides of the first pressing piece. The third driving assembly also includes a second driving piece, which is connected to the second pressing piece. The second driving piece is used to drive the second pressing piece to move toward the supporting tube. The second pressing piece can abut against both sides of the brim to make the two sides of the brim close to the outer surface of the supporting tube.

[0027] According to some embodiments of the present invention, the positioning device also includes a driving mechanism, which is arranged in the supporting tube, and the slide is arranged on the output end of the driving mechanism, and the driving mechanism is used to drive the slide to slide along the axial direction of the supporting tube, so that the pressing mechanism drives the brim to slide along the axial direction of the supporting tube.

[0028] According to some embodiments of the present invention, the support tube has a second avoidance groove, and the driving mechanism includes:

[0029] a fourth drive assembly, the fourth drive assembly being disposed in the support cylinder; and

[0030] A connecting seat, which is arranged on the output end of the fourth driving component, and the connecting seat can be penetrated by the second avoidance groove, and the connecting seat is connected to the sliding seat, and the fourth driving component is used to drive the connecting seat to slide in the axial direction of the supporting tube.

[0031] According to the sewing machine of the second aspect embodiment of the present invention, the sewing machine includes the positioning device described in any one of the embodiments of the first aspect, and the sewing machine also includes a sewing device, which is arranged at the other end of the supporting tube and is used to sew the brim.

[0032] The sewing machine according to the embodiment of the present invention has at least the following beneficial effects: through the precise positioning of the positioning device, the position of the brim on the support tube is accurate, thereby ensuring the accurate position of the sewing device; the positioning device is fast in positioning, which can improve production efficiency while ensuring the quality of sewing.

[0033] According to some embodiments of the present invention, the sewing machine includes more than two positioning devices and more than two sewing devices, and the more than two positioning devices are respectively arranged in a one-to-one correspondence with the more than two sewing devices.

[0034] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0036] Figure 1 is a schematic diagram of a positioning device according to an embodiment of the present invention;

[0037] Figure 2 for Figure 1 A schematic diagram of another viewing angle of the positioning device is shown;

[0038] Figure 3 for Figure 2 The internal structure diagram of the positioning device shown (the support cylinder is omitted);

[0039] Figure 4 for Figure 2A partial enlarged structural schematic diagram of the positioning device is shown.

[0040] Reference numerals:

[0041] Hat brim 1; sewing device 2; positioning device 3;

[0042] Support cylinder 10; slide seat 11; first avoidance groove 12; second avoidance groove 13;

[0043] The material pressing mechanism 20; the third driving assembly 21; the third driving member 213; the first driving member 211; the second driving member 212; the material pressing assembly 22; the first material pressing member 221; the second material pressing member 222;

[0044] A first positioning mechanism 30; a push plate 31; a push rod 32; a first driving assembly 33; a horizontal linear module 331; a vertical linear module 332;

[0045] The second positioning mechanism 40; the positioning member 41; the second driving assembly 411; the positioning plate 412; the guide portion 4121; the abutment portion 4122;

[0046] Driving mechanism 50; fourth driving assembly 51; connecting seat 52. DETAILED DESCRIPTION

[0047] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0048] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0050] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0051] Reference Figures 1 to 3 The positioning device 3 according to the first embodiment of the present invention is applied to position the brim 1 , and the positioning device 3 includes a support tube 10 , a pressing mechanism 20 , a first positioning mechanism 30 and a second positioning mechanism 40 . The support tube 10 is cylindrical, and the brim 1 is positioned on the support tube 10. The brim 1 can move on the outer surface of the support tube 10. The outer surface of the support tube 10 is provided with a slide 11, and the slide 11 can slide along the axial direction of the support tube 10; the pressing mechanism 20 is movably arranged at one end of the support tube 10 through the slide 11, and the pressing mechanism 20 can fit the brim 1 to the outer surface of the support tube 10, and the pressing mechanism 20 can slide on the support tube 10 along the axial direction of the support tube 10 so that the brim 1 can slide to the sewing position; the first positioning mechanism 30 is arranged at one end of the support tube 10, and the first positioning mechanism 30 is used to adjust the position of the brim 1 in the axial direction of the support tube 10; the second positioning mechanism 40 is arranged on the support tube 10, and the second positioning mechanism 40 is located on both sides of the first positioning mechanism 30, and the second positioning mechanism 40 can align the middle part of the brim 1 with the top of the support tube 10.

[0052] Specifically, the positioning device 3 of the embodiment of the present invention mainly includes a support tube 10, a pressing mechanism 20, a first positioning mechanism 30 and a second positioning mechanism 40. The support tube 10 is designed to be cylindrical, and its outer surface is specially designed for positioning the brim 1. In particular, the outer surface of the support tube 10 is equipped with a slide 11, and this design allows the slide 11 to slide freely along the axial direction of the support tube 10. In this way, the brim 1 can be flexibly moved on the outer surface of the support tube 10, which is convenient for subsequent positioning adjustment and transportation to the sewing position. The pressing mechanism 20 is connected to one end of the support tube 10 through the slide 11, realizing a movable setting. The mechanism can be composed of a pressing plate and a driving device. The driving device is responsible for driving the pressing plate to move toward the outer surface of the support tube 10, so that the brim 1 is tightly attached to the support tube 10. In addition, the pressing mechanism 20 can also slide on the support tube 10 along its axial direction together with the slide 11. This function enables the brim 1 to be easily moved to the sewing position after being attached. The first positioning mechanism 30 is arranged at one end of the support tube 10, and its core task is to adjust the position of the brim 1 in the axial direction of the support tube 10. The mechanism is usually composed of a positioning block and an adjusting device. The positioning block can abut against one end of the brim 1, and the adjusting device is responsible for driving the positioning block to move along the axial direction of the support tube 10, so as to achieve precise adjustment of the position of the brim 1. The second positioning mechanism 40 is located on the support tube 10 and is distributed on both sides of the first positioning mechanism 30. It is mainly composed of two alignment blocks, which are respectively located on both sides of the support tube 10 and can move toward the top of the support tube 10. When the brim 1 is placed on the support tube 10, the two alignment blocks will simultaneously abut against the middle of the brim 1 to ensure that it is perfectly aligned with the top of the support tube 10, thereby ensuring stability during the sewing process.

[0053] In practical applications, the brim 1 is first placed on the outer surface of the support tube 10, and then the brim 1 is tightly fitted on the support tube 10 through the pressing mechanism 20, and then the position of the brim 1 in the axial direction of the support tube 10 is finely adjusted by the first positioning mechanism 30. Subsequently, the middle of the brim 1 is aligned with the top of the support tube 10 through the second positioning mechanism 40, and after the first positioning mechanism 30 and the second positioning mechanism 40 are positioned in turn, the brim 1 is ensured to be positioned at a precise position, and finally the brim 1 can be tightly fitted on the support tube 10 by the pressing mechanism 20, and the brim 1 can be pushed to the sewing position by the sliding function of the slide 11. The positioning device 3 of the present invention realizes accurate and efficient positioning of the brim 1 through the synergistic effect of the support tube 10, the pressing mechanism 20, the first positioning mechanism 30 and the second positioning mechanism 40. This innovative design not only significantly improves the accuracy and production efficiency of sewing, but also greatly reduces the difficulty of operation and labor intensity.

[0054] Therefore, it can be understood that the positioning device 3 according to the embodiment of the present invention has at least the following beneficial effects: first, the brim 1 is tightly fitted on the outer surface of the support tube 10 through the pressing mechanism 20, and then the position of the brim 1 in the axial direction of the support tube 10 is positioned through the first positioning mechanism 30; then the middle of the brim 1 is positioned at the top of the support tube 10 through the second positioning mechanism 40, so that the two sides of the brim 1 are symmetrical; finally, the positioned brim 1 is transported to the sewing position on the support tube 10 through the pressing mechanism 20. The position of the brim 1 can be quickly positioned by positioning the first positioning mechanism 30 and the second positioning mechanism 40 in sequence, and the high-precision positioning method can also improve the quality of sewing while improving production efficiency.

[0055] Reference Figures 1 to 3 In some embodiments of the present invention, the first positioning mechanism 30 includes: an abutting plate 31 , an abutting rod 32 and a first driving assembly 33 . The push-up plate 31 is arranged at one end of the sliding seat 11, and the lower end of the push-up plate 31 is in contact with the outer surface of the supporting tube 10, and one side of the push-up plate 31 can push against one end of the brim 1; the push-up rod 32 can be raised and lowered in the supporting tube 10, and the supporting tube 10 has a first avoidance groove 12, and the extension direction of the first avoidance groove 12 is parallel to the axial direction of the supporting tube 10, and the push-up rod 32 is located in the first avoidance groove 12, and the push-up rod 32 can slide along the extension direction of the first avoidance groove 12, and the brim 1 is placed at a position between the push-up plate 31 and the push-up rod 32; the first driving component 33 is arranged in the supporting tube 10, and the output end of the first driving component 33 is connected to the push-up rod 32, and the first driving component 33 can drive the push-up rod 32 to rise and fall and slide along the extension direction of the first avoidance groove 12, so that one side of the push-up rod 32 can push against the other end of the brim 1.

[0056] The first positioning mechanism 30 is a key component of the positioning device 3 of the embodiment of the present invention, which is responsible for accurately adjusting the position of the brim 1 in the axial direction of the support tube 10 (the front-to-back direction shown in the figure). The mechanism is mainly composed of a push-up plate 31, a push-up rod 32 and a first drive assembly 33. The push-up plate 31 is arranged at one end of the slide 11, and its lower end is closely attached to the outer surface of the support tube 10. One side of the push-up plate 31 is designed to be able to push against one end of the brim 1, thereby achieving preliminary positioning of one end of the brim 1. This design ensures that the brim 1 can be stably attached to the support tube 10 when placed, providing a positioning reference in the front-to-back direction for subsequent positioning work. The push-up rod 32 is a key component that can be lifted and lowered in the support tube 10. In order to accommodate the lifting and lowering movement of the push-up rod 32, a first avoidance groove 12 is specially provided on the support tube 10. The extension direction of this avoidance groove is parallel to the axial direction of the support tube 10, so that the push-up rod 32 can slide freely in it, and at the same time, it can also avoid the brim 1 from sliding on the surface of the support tube 10. When the brim 1 is placed between the push-up plate 31 and the push-up rod 32, one side of the push-up rod 32 that is raised and slides backward can push against the other end of the brim 1, thereby pushing the brim 1 backward, and then the push-up plate 31 and the push-up rod 32 respectively push against the front and rear ends of the brim 1, and finally achieve precise positioning of the brim 1 in the axial direction of the support tube 10. The first drive assembly 33 is the power source for driving the push-up rod 32 to lift and slide. It is arranged inside the support tube 10, and its output end is connected to the push-up rod 32. Through the precise control of the first drive assembly 33, the push-up rod 32 can not only achieve lifting movement, but also slide along the extension direction of the first avoidance groove 12. This design enables the first positioning mechanism 30 to flexibly adjust the position of the brim 1 on the support tube 10 to ensure the accuracy and consistency of sewing.

[0057] Therefore, it can be understood that when positioning the brim 1, the push-up plate 31 is first moved to an appropriate position through the slide 11, so that the brim 1 is placed in the positioned position, and one side of the push-up plate 31 can be pressed against one end of the brim 1 for subsequent positioning actions. Then, the first drive assembly 33 is started to drive the push-up rod 32 to rise along the first avoidance groove 12 and slide backward to an appropriate position, so that one side of the push-up rod 32 is tightly pressed against the other end of the brim 1. Through the coordinated action of the push-up plate 31 and the push-up rod 32, the position of the brim 1 in the axial direction of the support tube 10 can be accurately determined. This positioning method is not only easy to operate, but also has high positioning accuracy, which provides a strong guarantee for subsequent sewing work.

[0058] Further, refer to Figures 1 to 3In some embodiments of the present invention, the first driving component 33 includes a horizontal linear module 331 and a vertical linear module 332. The vertical linear module 332 is arranged on the output end of the horizontal linear module 331, and the push rod 32 is arranged on the output end of the vertical linear module 332. The horizontal linear module 331 is used to drive the vertical linear module 332 to slide along the extension direction of the first avoidance groove 12, and the vertical linear module 332 is used to drive the push rod 32 to rise and fall in the first avoidance groove 12.

[0059] The first drive assembly 33 is a key part for accurately controlling the movement and position of the push rod 32 in the positioning device 3 of the present invention. The assembly consists of a horizontal linear module 331 and a vertical linear module 332, which work together to achieve accurate movement of the push rod 32 in the horizontal and vertical directions. Specifically, the horizontal linear module 331 is a power source that drives the vertical linear module 332 and the push rod 32 to slide along the extension direction of the first avoidance groove 12 (i.e., the axial direction of the support cylinder 10, i.e., the front-back direction shown in the figure). It is installed inside the support cylinder 10 and has the characteristics of high precision, high stability and compact structure. The horizontal linear module 331 drives the vertical linear module 332 and the push rod 32 to move accurately in the horizontal direction through its internal transmission mechanism (such as a lead screw, a slide rail, etc.). The vertical linear module 332 is responsible for driving the push rod 32 to rise and fall vertically in the first avoidance groove 12. It is installed on the output end of the horizontal linear module 331 and moves in the horizontal direction together with the horizontal linear module 331. The vertical linear module 332 also adopts a high-precision transmission mechanism, which can accurately control the lifting height of the push rod 32, ensuring that the push rod 32 can tightly push against the other end of the brim 1 to achieve precise positioning, while facilitating avoiding the brim 1 that needs to slide on the support tube 10.

[0060] When positioning the brim 1, firstly, the horizontal linear module 331 drives the vertical linear module 332 and the push rod 32 to slide to the appropriate position along the extension direction of the first avoidance groove 12. Then, the vertical linear module 332 is started to drive the push rod 32 to rise in the first avoidance groove 12 so that it passes through the support tube 10, so that one side of the push rod 32 can abut against one end of the brim 1. Through the coordinated work of the horizontal linear module 331 and the vertical linear module 332, the push rod 32 can achieve precise movement in the horizontal and vertical directions, thereby ensuring that the rear side of the push rod 32 can abut against the front end of the brim, and when the horizontal linear module 331 drives the push rod 32 to move backward, the brim 1 can be pushed backward so that the rear end of the brim 1 abuts against the push plate 31, thereby accurately determining the position of the brim 1 in the axial direction of the support tube 10.

[0061] Reference Figures 1 to 3In some embodiments of the present invention, the second positioning mechanism 40 includes two positioning members 41, and the two positioning members 41 are arranged on the outer surfaces of both sides of the support tube 10. The positioning members 41 include a second driving component 411 and a positioning plate 412. The second driving component 411 is arranged on the outer surface of the support tube 10; the positioning plate 412 is arranged on the output end of the second driving component 411, and the second driving component 411 is used to drive the positioning plate 412 to abut against both sides of the brim 1.

[0062] The second positioning mechanism 40 is a key part of the positioning device 3 of the present invention for ensuring that the brim 1 is stably aligned on the support tube 10. The mechanism is composed of two positioning components 41, which are respectively arranged on the outer surfaces of both sides of the support tube 10 (i.e., the left and right sides shown in the figure) to achieve accurate alignment and positioning of both sides of the brim 1. Each positioning component 41 includes a second drive component 411 and a positioning plate 412. The second drive component 411 is a power source for driving the positioning plate 412 to move, and it is installed on the outer surface of the support tube 10. The second drive component 411 can adopt various forms of drive mechanisms 50, such as cylinders, electric push rods or servo motors, etc., to meet different positioning requirements and precision requirements. Through the precise control of the second drive component 411, the positioning plate 412 can move flexibly so that the brim 1 slides circumferentially on the outer surface of the support tube 10, thereby achieving accurate alignment of both sides of the brim 1. The positioning plate 412 is the part of the second positioning mechanism 40 that directly contacts the brim 1, and it is installed on the output end of the second drive component 411. The design of the positioning plate 412 should ensure that it can fit closely with both sides of the brim 1 to achieve a stable alignment effect. At the same time, the material and surface treatment of the positioning plate 412 should also be considered to ensure that the brim 1 is not damaged during the alignment process.

[0063] When positioning the brim 1, the first positioning mechanism 30 is used to first determine the position of the brim 1 in the axial direction of the support tube 10. Then, the second driving assembly 411 in the two positioning members 41 is activated to drive the positioning plates 412 on both sides to move toward the brim 1. When the positioning plates 412 are in contact with both sides of the brim 1, the positioning plates 412 are continuously driven until the brim 1 is closely aligned with the top of the support tube 10. Through the coordinated work of the two positioning members 41, the two sides of the brim 1 can be accurately aligned and stably positioned on the support tube 10, providing a strong guarantee for the subsequent sewing work.

[0064] Further, refer to Figures 2 to 4 In some embodiments of the present invention, the positioning plate 412 has a guide portion 4121 and a stopper 4122. Along the vertical direction, the guide portion 4121 gradually shifts from the outer side of the support tube 10 to the inner side, and the lower end of the guide portion 4121 is connected to the upper end of the stopper 4122, and the side end of the brim 1 is abutted against the stopper 4122.

[0065] The positioning plate 412 is a key component in the second positioning mechanism 40 that directly contacts and aligns with the brim 1. The positioning plate 412 has two parts, a guide portion 4121 and a top portion 4122. This design is intended to guide the brim 1 into the positioning position more smoothly and accurately and ensure its stable alignment. The guide portion 4121 is a part of the upper part of the positioning plate 412, which gradually deviates from the outside to the inside of the support tube 10 in the vertical direction. This offset design enables the guide portion 4121 to act like a guide groove, guiding the left and right sides of the brim 1 to gradually approach the axis of the support tube 10 along the inclined direction of the guide portion 4121 when abutting the guide portion 4121 of the positioning plate 412, so as to enter the positioning position more easily. The existence of the guide portion 4121 not only improves the convenience of positioning, but also helps to reduce the positioning error caused by improper operation. The top portion 4122 is the lower part of the positioning plate 412, connected to the lower end of the guide portion 4121. The design of the abutting portion 4122 is to directly abut the side end of the brim 1 to ensure that the brim 1 is stably aligned in the horizontal direction. The shape and size of the abutting portion 4122 need to be customized according to the specific shape and size of the brim 1 to ensure that it can fit closely with the side end of the brim 1 to achieve a stable alignment effect.

[0066] When positioning the brim 1, first determine the position of the brim 1 in the axial direction of the support tube 10 through the first positioning mechanism 30. Then, start the second driving assembly 411 in the second positioning mechanism 40 to drive the positioning plate 412 to move toward the brim 1. Since the positioning plate 412 has a guide portion 4121, the brim 1 will be guided into the guide portion 4121 when placed, and gradually approach the axis of the support tube 10 along the guide portion 4121. When the side end of the brim 1 contacts the abutment portion 4122, continue to drive the positioning plate 412 until the brim 1 is tightly aligned with the top of the support tube 10. Through the coordinated action of the guide portion 4121 and the abutment portion 4122, the brim 1 can be quickly and accurately positioned on the support tube 10, providing a strong guarantee for subsequent sewing work.

[0067] Reference Figures 1 to 3 In some embodiments of the present invention, the pressing mechanism 20 includes: a third driving assembly 21 and a pressing assembly 22. The third driving assembly 21 is disposed on the slide 11; the pressing assembly 22 is disposed on the output end of the third driving assembly 21, and the third driving assembly 21 is used to drive the pressing assembly 22 to fit the brim 1 to the outer surface of the support tube 10.

[0068] The pressing mechanism 20 is a key part of the positioning device 3 of the present invention for ensuring that the brim 1 is closely fitted on the outer surface of the support tube 10. The mechanism is composed of a third drive assembly 21 and a pressing assembly 22, and the two work together to achieve stable pressing of the brim 1. The third drive assembly 21 is a power source for driving the pressing assembly 22 to move, and it is installed on the slide 11. The third drive assembly 21 can adopt various forms of driving mechanisms 50, such as cylinders, electric push rods, hydraulic cylinders or servo motors, etc., to meet different pressing requirements and precision requirements. Through the precise control of the third drive assembly 21, the pressing assembly 22 can move flexibly in the vertical direction and the horizontal direction to achieve stable pressing of the brim 1. The pressing assembly 22 is the part of the pressing mechanism 20 that directly contacts the brim 1, and it is installed on the output end of the third drive assembly 21. The design of the pressing assembly 22 should ensure that it can be pressed evenly and stably on the brim 1, so that the brim 1 is closely fitted on the outer surface of the support tube 10. In order to achieve this goal, the pressing component 22 can be in various forms, such as a pressing plate, a pressing wheel or a pressing block, etc. The specific form needs to be determined according to the shape, material and pressing requirements of the brim 1.

[0069] Before positioning the brim 1, first start the third drive assembly 21 in the pressing mechanism 20 to drive the pressing assembly 22 to move downward so that the pressing assembly 22 is close to the brim 1. When the pressing assembly 22 contacts the brim 1, continue to drive the pressing assembly 22 until the brim 1 is tightly fitted on the outer surface of the support tube 10. Through the coordinated work of the third drive assembly 21 and the pressing assembly 22, the brim 1 can be stably pressed on the support tube 10, avoiding the problem of movement or tilting in the subsequent positioning process. The pressing mechanism 20 of the present invention realizes the stable pressing of the brim 1 through the coordinated work of the third drive assembly 21 and the pressing assembly 22. This design not only improves the fit and stability between the brim 1 and the support tube 10, but also makes the entire positioning process more automated and intelligent. At the same time, since the third drive assembly 21 and the pressing assembly 22 are both designed with high precision and reliability, the durability and applicability of the entire positioning device 3 are also improved. In addition, the existence of the pressing mechanism 20 can also effectively reduce the positioning error caused by the movement or tilting of the brim 1, further improving the quality and efficiency of sewing.

[0070] Further, refer to Figures 1 to 3In some embodiments of the present invention, the third driving component 21 includes a third driving member 213, and the pressing component 22 is arranged on the output end of the third driving member 213. The output direction of the third driving member 213 extends along the axial direction of the support tube 10. The third driving member 213 is used to drive the pressing component 22 away from or close to the support tube 10, so that the brim 1 can be placed in the positioning position of the support tube 10. Before positioning the brim 1, first start the third driving member 213 to drive the pressing component 22 away from the support tube 10, leaving enough space for the brim 1 to be placed, and place the brim 1 on the top of the support tube 10, and then drive the pressing component 22 to approach the support tube 10 through the third driving member 213, and use the third driving component 21 to drive the pressing component 22 to move vertically downward and press against the brim 1; then position it through the first positioning mechanism 30 and the second positioning mechanism 40. After the first positioning mechanism 30 and the second positioning mechanism 40 complete the positioning of the brim 1, the first positioning mechanism 30 and the second positioning mechanism 40 detach from the brim 1, and then use the pressing assembly 22 to continue to press the brim 1 against the outer surface of the support tube 10, and then push the brim 1 to the sewing position through the slidable slide 11 and the pressing mechanism 20.

[0071] Further, refer to Figures 1 to 3 In some embodiments of the present invention, the third drive assembly 21 includes a first drive member 211, and the press assembly 22 includes a first press member 221, which is arranged on the output end of the first drive member 211, and the first drive member 211 drives the first press member 221 to move toward the support tube 10, and the first press member 221 can abut against the brim 1 so that the brim 1 fits the outer surface of the support tube 10. The third drive assembly 21 is further embodied as including the first drive member 211. The first drive member 211 is a power source installed on the slide 11, which is responsible for providing the power for the press assembly 22 to move. The first drive member 211 can select a cylinder, an electric push rod, a hydraulic cylinder, a servo motor or other driving mechanism 50 that can provide a linear motion output. The key is that the output direction of the first drive member 211 is set to face the support tube 10, so as to drive the press assembly 22 to move toward the support tube 10. Correspondingly, the press assembly 22 is embodied here as including the first press member 221. The first pressing member 221 is a component that directly contacts the brim 1 and applies pressure, and is installed on the output end of the first driving member 211. The design of the first pressing member 221 needs to consider its shape, material and hardness to ensure that the brim 1 is not damaged when pressed, and at the same time, it can provide enough pressure to make the brim 1 fit tightly on the outer surface of the support tube 10.

[0072] In the process of positioning the brim 1, before the brim 1 is precisely positioned on the top of the support tube 10 by the first positioning mechanism 30 and the second positioning mechanism 40, the third drive assembly 21 starts to work. Specifically, the first drive member 211 is activated to drive the first pressing member 221 to move toward the support tube 10. As the first pressing member 221 moves, it gradually approaches and eventually abuts against the brim 1. Under the action of the power continuously output by the first drive member 211, the first pressing member 221 applies pressure to the brim 1, so that the brim 1 fits tightly against the outer surface of the support tube 10. In this way, the brim 1 is stably pressed onto the support tube 10, ready for subsequent positioning work.

[0073] Furthermore, refer to Figures 1 to 3 In some embodiments of the present invention, the pressing component 22 includes a second pressing piece 222, and the second pressing piece 222 is arranged on both sides of the first pressing piece 221. The third driving component 21 also includes a second driving piece 212, and the second driving piece 212 is connected to the second pressing piece 222. The second driving piece 212 is used to drive the second pressing piece 222 to move toward the support tube 10. The second pressing piece 222 can abut against both sides of the brim 1 so that the two sides of the brim 1 are close to the outer surface of the support tube 10.

[0074] Specifically, the pressing component 22 is further expanded to include a second pressing piece 222. The second pressing piece 222 is arranged on both sides of the first pressing piece 221, and together with the first pressing piece 221, it constitutes an all-round pressing system for the brim 1. The design of the second pressing piece 222 needs to take into account its shape, size and material to ensure that the pressure can be evenly distributed when pressing the brim 1 to avoid deformation or damage to the brim 1. At the same time, the second pressing piece 222 needs to have a certain elasticity or adjustability to adapt to brims 1 of different sizes and shapes. In order to drive the second pressing piece 222 to move, the third driving component 21 is further expanded to include a second driving member 212. The second driving member 212 is connected to the second pressing piece 222 and is responsible for providing the second pressing piece 222 with power to move. Similar to the first driving member 211, the second driving member 212 can also select a cylinder, an electric push rod, a hydraulic cylinder, a servo motor or other driving mechanism 50 that can provide a linear motion output. The key point is that the output direction of the second driving member 212 is set to be toward the support cylinder 10 and consistent with the moving direction of the second pressing member 222 so as to be able to drive the second pressing member 222 to move toward the support cylinder 10.

[0075] In the process of positioning the brim 1, before the brim 1 is accurately positioned at the top of the support tube 10 by the first positioning mechanism 30 and the second positioning mechanism 40, the third driving assembly 21 starts to work. First, the first driving member 211 is activated to drive the first pressing member 221 to move toward the support tube 10 to press the middle part of the brim 1. Subsequently, the second driving member 212 is activated to drive the second pressing member 222 to move toward the support tube 10 to press the two sides of the brim 1. Through the coordinated work of the first pressing member 221 and the second pressing member 222, the brim 1 is pressed on the outer surface of the support tube 10 in all directions, ensuring the close fit between the brim 1 and the support tube 10. After the first pressing member 221 and the second pressing member 222 are pressed on the brim 1, the first positioning mechanism 30 and the second positioning mechanism 40 can position the brim 1; when positioned, the pressing mechanism 20 can be used to push the brim 1 to the sewing position of the support tube 10.

[0076] Reference Figures 1 to 3 In some embodiments of the present invention, the positioning device 3 also includes a driving mechanism 50, which is arranged in the support tube 10, and the slide 11 is arranged on the output end of the driving mechanism 50. The driving mechanism 50 is used to drive the slide 11 to slide along the axial direction of the support tube 10, so that the pressing mechanism 20 drives the brim 1 to slide along the axial direction of the support tube 10.

[0077] The driving mechanism 50 is a key component newly added in the positioning device 3 of the embodiment of the present invention. It is arranged inside the support tube 10 and is responsible for providing the slide 11 with power to slide along the axial direction of the support tube 10. The driving mechanism 50 can be in various forms, such as an electric motor with a lead screw transmission, a pneumatic or hydraulically driven piston cylinder, a linear module, etc. These mechanisms can achieve stable linear motion output and have high precision and reliability. The slide 11 is installed on the output end of the driving mechanism 50. Through the movement of the driving mechanism 50, the slide 11 and the pressing mechanism 20 can slide along the axial direction of the support tube 10. In order to ensure the stability and accuracy of the slide 11 during the sliding process, a guide structure, such as a slide rail, a slide groove, etc., is usually provided between the slide 11 and the support tube 10. These guide structures can limit the moving direction of the slide 11 and prevent it from deviating from the predetermined trajectory.

[0078] Before positioning the brim 1, firstly, the driving mechanism 50 drives the slide 11 to slide to an appropriate position along the axial direction of the support tube 10, leaving enough space for the placement and positioning of the brim 1. Then, the brim 1 is placed on the top of the support tube 10, and is precisely positioned by the pressing of the pressing mechanism 20 and the first positioning mechanism 30 and the second positioning mechanism 40. After the positioning is completed, the driving mechanism 50 is started again to drive the slide 11 and the pressing mechanism 20 to slide along the axial direction of the support tube 10, driving the brim 1 to move together. During the movement, the pressing mechanism 20 maintains the pressing state of the brim 1 to ensure that the brim 1 fits tightly on the outer surface of the support tube 10. When the slide 11 moves to the predetermined position, the driving mechanism 50 stops working, completing the positioning, pressing and feeding process of the brim 1.

[0079] Further, refer to Figures 1 to 3 In some embodiments of the present invention, the support tube 10 has a second avoidance groove 13, and the driving mechanism 50 includes: a fourth driving component 51 and a connecting seat 52, the fourth driving component 51 is arranged in the support tube 10; the connecting seat 52 is arranged on the output end of the fourth driving component 51, the connecting seat 52 can be penetrated by the second avoidance groove 13, the connecting seat 52 is connected to the sliding seat 11, and the fourth driving component 51 is used to drive the connecting seat 52 to slide in the axial direction of the support tube 10.

[0080] The support tube 10 is the main support structure of the positioning device 3, and a second avoidance groove 13 is provided on its side wall. The avoidance groove is designed to allow the connecting seat 52 to smoothly slide along the axial direction of the support tube 10 under the drive of the fourth driving assembly 51 without being hindered by the side wall of the support tube 10. The shape and size of the second avoidance groove 13 must match the shape and size of the connecting seat 52 to ensure that the connecting seat 52 can be smoothly inserted therein.

[0081] The fourth drive assembly 51 is the core part of the drive mechanism 50. It is arranged inside the support tube 10 and is responsible for providing the connecting seat 52 with power to slide along the axis direction of the support tube 10. The fourth drive assembly 51 can be in the form of an electric motor with a lead screw drive, a pneumatic or hydraulic driven piston cylinder, etc., all of which can provide stable and controllable linear motion output. The output end of the fourth drive assembly 51 is connected to the connecting seat 52, and through its internal transmission mechanism (such as a lead screw, a piston, etc.), it can convert power into linear motion of the connecting seat 52.

[0082] The connecting seat 52 is a key component for connecting the fourth drive assembly 51 and the slide seat 11. It is arranged on the output end of the fourth drive assembly 51 and can be inserted into the second avoidance groove 13 of the support tube 10. The design of the connecting seat 52 needs to consider its strength, rigidity and wear resistance to ensure that it will not be deformed or damaged during long-term sliding. At the same time, a reliable connection structure, such as a bolt connection, a snap connection, etc., needs to be set between the connecting seat 52 and the slide seat 11 to ensure a stable connection between the two.

[0083] Before positioning the brim 1, first start the fourth drive assembly 51 to drive the connecting seat 52 to slide to an appropriate position along the axial direction of the support tube 10. Since the connecting seat 52 can be inserted into the second avoidance groove 13, it will not be hindered by the side wall of the support tube 10 and can smoothly drive the slide 11 to move together. When the connecting seat 52 moves to a predetermined position, the fourth drive assembly 51 stops working, and the slide 11 is also located at a corresponding position, leaving enough space for the placement and positioning of the brim 1. Then, according to the workflow of the above embodiment, the positioning and pressing process of the brim 1 is carried out. During the positioning and pressing process, the fourth drive assembly 51 remains stationary to ensure the stability of the slide 11 and the pressing mechanism 20. When it is necessary to move the brim 1 to the sewing position, start the fourth drive assembly 51 again to drive the connecting seat 52 and the slide 11 to slide along the axial direction of the support tube 10.

[0084] The fourth drive assembly 51 and the connecting seat 52 of the present invention are designed to achieve stable sliding of the slide seat 11 and the pressing mechanism 20 along the axial direction of the support tube 10. This design not only improves the automation level and work efficiency of the positioning device 3, but also ensures the stability and accuracy of the brim 1 during the positioning process by accurately controlling the moving distance and speed of the connecting seat 52. At the same time, since the fourth drive assembly 51 and the connecting seat 52 are both designed with high precision and reliability, and the setting of the second avoidance groove 13 avoids the obstruction of the side wall of the support tube 10, the durability, applicability and versatility of the entire positioning device 3 are also improved. In addition, this design also enables the positioning device 3 to adapt to support tubes 10 of different lengths and diameters and brims 1 of different shapes and sizes, further improving its flexibility and practicality.

[0085] According to the sewing machine of the second aspect embodiment of the present invention, the sewing machine includes the positioning device 3 of any one of the above-mentioned first aspect embodiments, and the sewing machine also includes a sewing device 2, which is arranged at the other end of the support tube 10, and the sewing device 2 is used to sew the brim 1. Through the precise positioning of the positioning device 3, the position of the brim 1 on the support tube 10 is accurate, thereby ensuring the accurate position of the sewing device 2, and the positioning device 3 is fast in positioning, which can improve the production efficiency and ensure the quality of sewing.

[0086] In some embodiments of the present invention, the sewing machine includes more than two positioning devices 3 and more than two sewing devices 2, and the more than two positioning devices 3 are respectively arranged in one-to-one correspondence with the more than two sewing devices 2.

[0087] Specifically, in order to further improve the production capacity and flexibility of the sewing machine, the present invention also provides another embodiment, that is, the sewing machine includes more than two positioning devices 3 and more than two sewing devices 2. These positioning devices 3 and sewing devices 2 are arranged on the sewing machine in a one-to-one correspondence, that is, each positioning device 3 is equipped with a corresponding sewing device 2. The feeding device (not shown in the figure) for providing the brim 1 can be arranged between them, and the brim 1 can be provided to different positioning devices 3 in turn.

[0088] This design enables the sewing machine to process multiple hat brims 1 at the same time and realize parallel operation. The feeding device can simultaneously place multiple hat brims 1 on each positioning device 3 and start the sewing machine. At this time, each sewing device 2 will independently sew the corresponding hat brims 1, thereby greatly improving production efficiency.

[0089] In addition, since each positioning device 3 and sewing device 2 works independently, the operator can also adjust the type of brim 1 on different positioning devices 3 or the sewing parameters of the sewing device 2 according to actual needs to achieve more flexible and diverse sewing operations. This design is particularly suitable for occasions where a variety of different types of hats need to be mass-produced, which can significantly reduce production costs and improve production efficiency.

[0090] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A positioning device, used for positioning a hat brim (1), characterized in that: include: A support tube (10), the support tube (10) is cylindrical, the brim (1) can be placed on the support tube (10), the brim (1) can move on the outer surface of the support tube (10), and a slide seat (11) is provided on the outer surface of the support tube (10), and the slide seat (11) can slide along the axial direction of the support tube (10); A material pressing mechanism (20), the material pressing mechanism (20) is movably arranged at one end of the support tube (10) through the slide seat (11), the material pressing mechanism (20) can make the brim (1) fit the outer surface of the support tube (10), and the material pressing mechanism (20) can slide on the support tube (10) along the axial direction of the support tube (10) so that the brim (1) can slide to a sewing position; A first positioning mechanism (30), the first positioning mechanism (30) being arranged at one end of the support tube (10), the first positioning mechanism (30) being used to adjust the position of the brim (1) in the axial direction of the support tube (10); as well as A second positioning mechanism, the second positioning mechanism is arranged on the support tube (10), the second positioning mechanism is located on both sides of the first positioning mechanism (30), and the second positioning mechanism can align the middle part of the brim (1) with the top of the support tube (10).

2. The positioning device according to claim 1, characterized in that: The first positioning mechanism (30) comprises: a butting plate (31), the butting plate (31) being arranged at one end of the sliding seat (11), the lower end of the butting plate (31) being in contact with the outer surface of the supporting tube (10), and one side of the butting plate (31) being able to butt against one end of the brim (1); a push rod (32), the push rod (32) being movable in and out of the support tube (10), the support tube (10) having a first avoidance groove (12), the extension direction of the first avoidance groove (12) being parallel to the axial direction of the support tube (10), the push rod (32) being located in the first avoidance groove (12), the push rod (32) being movable in the extension direction of the first avoidance groove (12), and the hat brim (1) being placed between the push plate (31) and the push rod (32); and A first driving component (33), wherein the first driving component (33) is arranged in the supporting tube (10), wherein an output end of the first driving component (33) is connected to the abutting rod (32), and the first driving component (33) can drive the abutting rod (32) to rise and fall and slide along the extension direction of the first avoidance groove (12), so that one side of the abutting rod (32) abuts against the other end of the brim (1).

3. The positioning device according to claim 2, characterized in that: The first driving component (33) comprises a horizontal linear module (331) and a vertical linear module (332); the vertical linear module (332) is arranged on the output end of the horizontal linear module (331); the push rod (32) is arranged on the output end of the vertical linear module (332); the horizontal linear module (331) is used to drive the vertical linear module (332) to slide along the extension direction of the first avoidance groove (12); and the vertical linear module (332) is used to drive the push rod (32) to rise and fall in the first avoidance groove (12).

4. The positioning device according to claim 1, characterized in that: The second positioning mechanism comprises two positioning components (41), the two positioning components (41) are arranged on the outer surfaces of both sides of the support tube (10), and the positioning components (41) include: a second driving assembly (411), the second driving assembly (411) being disposed on an outer surface of the supporting tube (10); and A positioning plate (412), wherein the positioning plate (412) is arranged on the output end of the second driving component (411), and the second driving component (411) is used to drive the positioning plate (412) to abut against two sides of the hat brim (1).

5. The positioning device according to claim 4, characterized in that: The positioning plate (412) has a guide portion (4121) and a stopper portion (4122). In the vertical direction, the guide portion (4121) gradually deviates from the outer side of the support tube (10) to the inner side. The lower end of the guide portion (4121) is connected to the upper end of the stopper portion (4122), and the side end of the brim (1) is abutted against the stopper portion (4122).

6. The positioning device according to claim 1, characterized in that: The material pressing mechanism (20) comprises: a third drive assembly (21), the third drive assembly (21) being arranged on the slide seat (11); and A material pressing assembly (22), wherein the material pressing assembly (22) is arranged on the output end of the third driving assembly (21), and the third driving assembly (21) is used to drive the material pressing assembly (22) to make the brim (1) fit the outer surface of the support tube (10).

7. The positioning device according to claim 6, characterized in that: The third driving component (21) includes a third driving member (213), and the pressing component (22) is arranged on the output end of the third driving member (213). The output direction of the third driving member (213) extends along the axial direction of the support tube (10). The third driving member (213) is used to drive the pressing component (22) away from or close to the support tube (10) so that the brim (1) can be placed in the positioning position of the support tube (10).

8. The positioning device according to claim 6, characterized in that: The third driving component (21) includes a first driving member (211), and the pressing component (22) includes a first pressing member (221). The first pressing member (221) is arranged on the output end of the first driving member (211). The first driving member (211) drives the first pressing member (221) to move toward the supporting tube (10). The first pressing member (221) can abut against the brim (1) so that the brim (1) fits against the outer surface of the supporting tube (10).

9. The positioning device according to claim 8, characterized in that: The pressing component (22) includes a second pressing piece (222), and the second pressing piece (222) is arranged on both sides of the first pressing piece (221). The third driving component (21) also includes a second driving piece (212), and the second driving piece (212) is connected to the second pressing piece (222). The second driving piece (212) is used to drive the second pressing piece (222) to move toward the support tube (10). The second pressing piece (222) can abut against both sides of the brim (1) so that the two sides of the brim (1) are close to the outer surface of the support tube (10).

10. The positioning device according to claim 1, characterized in that: The invention also comprises a driving mechanism (50), wherein the driving mechanism (50) is arranged in the supporting tube (10), and the sliding seat (11) is arranged on the output end of the driving mechanism (50), and the driving mechanism (50) is used to drive the sliding seat (11) to slide along the axial direction of the supporting tube (10), so that the pressing mechanism (20) drives the brim (1) to slide along the axial direction of the supporting tube (10).

11. The positioning device according to claim 10, characterized in that: The support tube (10) has a second avoidance groove (13), and the driving mechanism (50) comprises: a fourth drive assembly (51), the fourth drive assembly (51) being disposed in the support cylinder (10); and A connecting seat (52), wherein the connecting seat (52) is arranged on the output end of the fourth driving component (51), the connecting seat (52) can be penetrated by the second avoidance groove (13), the connecting seat (52) is connected to the sliding seat (11), and the fourth driving component (51) is used to drive the connecting seat (52) to slide in the axial direction of the supporting tube (10).

12. A sewing machine, characterized in that: It comprises the positioning device (3) as described in any one of claims 1 to 11, and the sewing machine also comprises a sewing device (2), wherein the sewing device (2) is arranged at the other end of the supporting tube (10), and the sewing device (2) is used for sewing the brim (1).

13. A sewing machine according to claim 12, characterized in that: The sewing machine comprises more than two positioning devices (3) and more than two sewing devices (2), and the more than two positioning devices (3) are respectively arranged in one-to-one correspondence with the more than two sewing devices (2).

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