Full-automatic round cloth automatic button sewing machine

Abstract

The present application relates to a full-automatic round cloth automatic buttoning sewing machine, comprising: a machine table, a rotating supporting surface and a supporting piece for supporting the round cloth are arranged on the machine table; a pressing mechanism, the pressing mechanism is arranged above the rotating supporting surface and can be close to or away from the rotating supporting surface; a sewing device, the sewing device is correspondingly arranged on one side of the supporting piece; a buttoning station, the buttoning station is arranged upstream of the sewing device and is used for processing a buttoning belt piece; a transfer mechanism, the transfer mechanism is used for transferring and placing the buttoning belt piece on the buttoning station to the edge of the round cloth on the supporting piece, and the position corresponds to the sewing port of the sewing device, and the buttoning belt piece and the round cloth are sewn through the sewing device, the purpose of the present application is to provide a full-automatic round cloth automatic buttoning sewing machine to solve the technical problems of low overall work efficiency, unstable quality and poor distribution precision caused by the dependence of the buttoning and sewing process on manual operation in the prior art.

Description

Technical Field

[0001] This invention belongs to the field of sewing equipment technology, and in particular relates to a fully automatic circular fabric automatic button sewing machine. Background Technology

[0002] In the fields of trampolines and sporting goods, it is often necessary to evenly sew multiple buckles with webbing onto the edge of a circular fabric to form hooks or connection points. In traditional production methods, both the process of threading the webbing through the buckle and sewing the buckles to the edge of the circular fabric are done manually. Workers must first manually thread the webbing through the buckle's hole, complete the threading and trim it, and then manually place the threaded buckle assembly on the edge of the circular fabric while operating a sewing machine to sew it together, rotating a large area of ​​fabric.

[0003] However, the above-mentioned manual operation method has the following problems: manual button threading is labor-intensive and inefficient; the speed and angle of manually rotating the fabric are uneven, which can easily lead to crooked sewing stitches, inconsistent stitch density, unstable product quality, and for large-diameter circular fabrics, hand operation is extremely inconvenient and it is difficult to ensure the accuracy of the button distribution. Summary of the Invention

[0004] The purpose of this invention is to provide a fully automatic circular fabric button-threading and sewing machine to solve the technical problems of low overall work efficiency, unstable quality, and poor distribution accuracy caused by the reliance on manual operation for button-threading and sewing processes in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: a fully automatic circular fabric automatic button sewing machine, comprising: a machine base, wherein the machine base is provided with a rotating support surface and a support piece for supporting the circular fabric; A pressing mechanism is provided above the rotating support surface and can be close to or away from the rotating support surface; A sewing device, wherein the sewing device is correspondingly disposed on one side of the support piece; The button-threading station is located upstream of the sewing equipment and is used to process button-threaded webbing parts; A transfer mechanism is used to transfer the buckle webbing from the buckle-attaching station to the edge of the round fabric on the tray, and this position corresponds to the sewing opening of the sewing device, through which the buckle webbing is sewn to the round fabric.

[0006] Preferably, the device further includes a webbing conveying mechanism and a buckle conveying mechanism, which are disposed on the machine platform. The webbing conveying mechanism and the buckle conveying mechanism are used to convey the webbing and the buckle to the buckling station, respectively. The buckling station includes a clamping assembly, an upper belt threading assembly, and a lower belt threading assembly. The clamping assembly is used to clamp the buckle conveyed by the buckle conveying mechanism. The upper belt threading assembly and the lower belt threading assembly are respectively disposed above and below the clamping assembly, and are used to pass the webbing conveyed by the webbing conveying mechanism sequentially through the buckle from above and below to form a buckled webbing component.

[0007] Preferably, the clamping assembly includes a clamping cylinder assembly, and a left clamping portion and a right clamping portion respectively disposed on the two clamping ends of the clamping cylinder assembly. The left clamping portion and the right clamping portion can move closer to or further away from each other, and a space for clamping the buckle is formed between them. A lifting cylinder is connected to the bottom of the clamping cylinder assembly. The lifting cylinder is used to drive the clamping assembly to move up and down, so that it switches between a waiting position corresponding to the outlet of the buckle conveying mechanism and a buckle-threading position corresponding to the outlet of the webbing conveying mechanism.

[0008] Preferably, the upper strap assembly includes a mounting frame, and a top-pressing cylinder and an upper strap cylinder fixed on the mounting frame. The telescopic ends of the top-pressing cylinder and the upper strap cylinder are both arranged downwards. A lower pressing block is fixed on the telescopic end of the top-pressing cylinder. The lower pressing block is used to initially press the webbing into the through hole of the buckle in the clamping assembly, and at the same time press one end of the webbing tightly onto the buckle. An upper strap plate is provided on the telescopic end of the upper strap cylinder. The upper strap plate is used to bring the other end of the webbing from above the through hole of the buckle to below the through hole.

[0009] Preferably, the clamping assembly further includes a pusher assembly, which includes a pusher plate and a pusher cylinder for driving the pusher plate to move inward. The pusher plate is used to push the webbing brought in by the upper webbing plate to the area below the buckle hole laterally to the right clamping part, so that the end of the webbing extends out of the buckle and corresponds to the position of the lower webbing assembly.

[0010] Preferably, the under-belt assembly includes an under-belt cylinder, which is fixed to one side of the clamping cylinder assembly. The telescopic end of the under-belt cylinder is arranged upwards and has a connecting block on it. An under-belt piece is vertically arranged on the connecting block. The under-belt piece is located between the left clamping part and the right clamping part. The under-belt piece is used to bring the webbing pushed by the pusher to the inside of the clamping assembly and extending out of the buckle end from the outside of the buckle hole to above the buckle.

[0011] Preferably, the rotating support surface includes a rotating surface and a rotating drive mechanism for driving the rotating surface to rotate. The support piece is arranged around the outer periphery of the rotating surface and is annular. The support piece includes a first support surface flush with the rotating surface and a second support surface with a height lower than the first support surface. The sewing equipment includes a sewing machine, a sewing table, and a moving component disposed below the sewing machine. The sewing table is disposed on one side of the first support surface, and the sewing opening of the sewing table corresponds to the position of the second support surface. The moving component is used to drive the circular fabric to move back and forth relative to the sewing table.

[0012] Preferably, the pressing mechanism includes a fixed frame and a pressing head. The pressing head includes a first cylinder, a support frame, a pressure plate, multiple abutting rods, and a pressing foot. The driving direction of the first cylinder is perpendicular to the rotating support surface. The support frame is fixed to the driving end of the first cylinder. The pressure plate is fixed below the support frame. One end of each of the multiple abutting rods is connected to the pressure plate, and the other end is fixed to the pressing foot. The pressing foot is used to press the round fabric against the rotating support surface.

[0013] Preferably, the transfer mechanism includes a transverse drive and a longitudinal drive, as well as a clamping claw disposed on the drive end of the transverse drive or the longitudinal drive. The clamping claw is used to pick up the buckle webbing after it has been formed at the buckle-fastening station and transfer it to the edge of the round fabric.

[0014] Preferably, the clamping assembly has a tail-folding mechanism on one side, which is used to fold the tail of the webbing brought out by the under-threaded strip flat and press it against the clamping assembly.

[0015] Compared with existing technologies, the present invention has the following advantages through the above technical solution: By setting a rotating support surface and a pressing mechanism, the pressing mechanism stably presses the central area of ​​the circular fabric onto the rotating surface. The rotating drive mechanism drives the circular fabric to rotate synchronously and uniformly, so that the edge of the fabric can be continuously and smoothly transported to the sewing equipment for sewing. This replaces the traditional manual operation of rotating the fabric, avoiding problems such as skewing stitches and uneven stitch density caused by uneven speed and angle during manual rotation, thus improving the stability of product quality. At the same time, a support piece is set around the outer periphery of the rotating surface. The first supporting surface of the support piece is flush with the rotating surface, and the second supporting surface is sunken and corresponds to the sewing opening of the sewing table. This can provide circumferential support for circular fabrics with larger diameters, preventing the edges from sagging and shifting. Combined with the adjustment of the front and back position of the fabric by the moving component, the part of the circular fabric to be sewn is always accurately located at the sewing opening, effectively ensuring the distribution accuracy of the buckles around the circular fabric. This solves the problems of inconvenient hand operation of large-sized circular fabrics and poor buckle distribution accuracy.

[0016] Furthermore, this invention achieves automatic feeding and fastening of webbing and fasteners by setting up a fastening station consisting of a webbing conveyor mechanism, a buckle conveyor mechanism, a clamping assembly, an upper fastening assembly, and a lower fastening assembly. Specifically, driven by a lifting cylinder, the clamping assembly switches between a waiting position corresponding to the outlet of the buckle conveyor mechanism and a fastening position corresponding to the outlet of the webbing conveyor mechanism to receive buckles. The upper fastening assembly initially presses the webbing into the buckle hole and tightens one end through a lower pressing block. Then, the upper fastening plate brings the other end of the webbing from above the hole to below. Subsequently, the pushing assembly pushes the section of webbing laterally to the corresponding position of the lower fastening assembly. Finally, the lower fastening plate brings the end of the webbing back from outside the buckle hole to above the buckle. Each action is closely connected by a cylinder-driven thin-plate interlocking method, resulting in a smooth and efficient fastening process. This achieves full automation of the fastening process, replacing manual fastening operations, reducing labor intensity, and improving fastening efficiency and the consistency of fastened webbing components. At the same time, the transfer mechanism can automatically transfer the formed button webbing to the edge of the round fabric on the tray to be sewn, and work with the sewing equipment to complete the sewing, so that the buttoning and sewing processes can be fully automated.

[0017] In summary, the present invention solves the technical problems of low overall work efficiency, unstable quality, and poor distribution accuracy caused by the reliance on manual operation for buttoning and sewing processes in the prior art. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the automatic sewing machine part of the present invention; Figure 3 This is a side view of the automatic sewing machine portion of the present invention. Figure 4 This is a schematic diagram of the pressing mechanism of the present invention; Figure 5 This is a schematic diagram of the automatic button-threading machine of the present invention; Figure 6 This is a side view of the automatic button-threading machine of the present invention. Figure 7 This is a schematic diagram of the mobile component structure of the present invention; Figure 8This is a side view of the mobile component structure of the present invention; Figure 9 This is a schematic diagram of the tail-folding mechanism of the present invention; Figure 10 This is a schematic diagram of the clamping component structure of the present invention; Figure 11 This is a side view of the clamping assembly of the present invention. Figure 12 For the present invention Figure 10 A partially enlarged structural diagram; Figure 13 This is a schematic diagram of the underwire assembly structure of the present invention; Figure 14 This is a schematic diagram of the webbing conveyor mechanism of the present invention; Figure 15 This is a schematic diagram of the structure of the present invention in the state of being ready to be fastened; Figure 16 This is a schematic diagram of the pressing state structure of the pressing block of the present invention; Figure 17 This is a schematic diagram of the structure of the upper webbing piece driving the webbing downwards in the present invention; Figure 18 This is a schematic diagram of the structure of the pusher plate driving the webbing in a lateral movement state according to the present invention; Figure 19 This is a schematic diagram of the structure of the lower webbing piece driving the webbing upward in the present invention; Figure 20 This is a schematic diagram of the structure of the fork inserted into the webbing according to the present invention; Figure 21 This is a schematic diagram of the folding webbing structure of the fork according to the present invention; Figure 22 This is a schematic diagram of the transmission assembly of the present invention in the state of pulling back the webbing; Figure 23 This is a schematic diagram of the structure of the webbing in the cut and ready-to-be-picked state of the present invention; Figure 24 This is a schematic diagram of the transverse alignment device of the present invention; The invention reference information is as follows: 1. Machine base; 2. Rotating support surface; 3. Support piece; 4. Pressing mechanism; 5. Sewing equipment; 6. Button threading station; 7. Transfer mechanism; 8. Ribbon conveying mechanism; 9. Button conveying mechanism; 10. Clamping assembly; 11. Upper ribbon threading assembly; 12. Lower ribbon threading assembly; 13. Tail folding mechanism; 14. Pressing assembly; 15. Elastic pressing cloth component; 16. Transmission assembly; 17. Baffle; 100. Clamping cylinder assembly; 101. Left clamping part; 102. Right clamping part; 1 03. Lifting cylinder; 104. Pusher plate; 105. Material pushing cylinder; 110. Top pressing cylinder; 111. Upper belt threading cylinder; 112. Lower pressing block; 113. Upper belt threading plate; 120. Lower belt threading cylinder; 121. Connecting block; 122. Lower belt threading plate; 130. Main push cylinder; 131. Secondary push cylinder; 132. Plate base; 133. Adjusting plate; 134. Rotary drive cylinder; 135. Rack; 136. Slide; 137. Actuating shaft; 138. 139. Gear; 140. Shift fork; 141. Fixed base; 142. Third cylinder; 143. Drive plate; 144. Pressure block; 145. Clearance slot; 160. Main drive roller; 161. Driven roller; 162. Drive motor; 201. Rotating surface; 202. Rotary drive mechanism; 401. Fixed frame; 402. Pressing head; 403. First cylinder; 404. Bearing frame; 405. Pressure plate; 406. Abutting rod; 407. Pressing foot; 408. 409. Top frame; 501. Linear module; 502. Sewing machine; 503. Sewing table; 504. Moving component; 505. Cross frame; 706. Lateral drive component; 707. Longitudinal drive component; 708. Clamping claw; 809. Webbing stand; 800. Shaping roller; 801. Guide seat; 802. Drive frame; 803. Cutter head module; 804. Drive mechanism; 905. Vibratory feeder; 906. Straight vibrator; 907. Material trough; 1308. Push plate; The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The following will refer to the appendices in the embodiments of the present invention. Figure 1-24 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0023] like Figure 1 As shown: A fully automatic circular fabric button-threading sewing machine, including: Machine base 1 is equipped with a rotating support surface 2 and a support plate 3 for supporting round fabric. The rotating support surface 2 supports the central area of ​​the round fabric and can drive the round fabric to rotate. The support plate 3 supports the edge part of the round fabric that extends beyond the rotating support surface 2, providing a continuous support plane for the rotational conveying of the fabric and preventing the fabric edge from sagging due to gravity, which would affect the stability of the feeding. Furthermore, an elastic fabric pressing component 15 is provided near the sewing equipment 5 on the support plate 3. The elastic fabric pressing component 15 includes a liftable metal spring, one end of which is fixed on the support plate 3, and the other end is a movable section that can be lifted to press the round fabric. Specifically, when it is necessary to press the fabric, the movable section can be lifted to allow the edge of the fabric to enter under it. After being released, the elasticity of the spring allows the edge of the round fabric to be flexibly pressed against the support plate 3, which not only plays an auxiliary positioning role but also avoids damage to the fabric.

[0024] The pressing mechanism 4 is positioned above the rotating support surface 2 and can be close to or away from the rotating support surface 2 to press the center of the circular fabric. By pressing the center, the pressing mechanism 4, in conjunction with the circumferential drive of the rotating support surface 2, enables the circular fabric to rotate synchronously and uniformly with the rotating support surface 2, preventing relative slippage between the fabric and the rotating support surface. This ensures that the sewing parts of the fabric edge can be accurately and smoothly conveyed to the sewing station in sequence, and during this process, the pressing mechanism 4 can rotate synchronously with the rotating support surface 2. Sewing device 5 is set on one side of tray 3 for sewing operations. Specifically, it sews the button webbing sent by the transfer mechanism 7 together with the edge of the round fabric that has been sent to the sewing opening. The button threading station 6 is located upstream of the sewing equipment 5. Its function is to automatically thread the webbing through the buckle hole to produce the required buttoned webbing parts without manual intervention. The transfer mechanism 7 is located between the button-attaching station 6 and the sewing opening of the sewing device 5. It is used to pick up the processed button-attaching webbing from the button-attaching station 6, transfer it and place it on the predetermined sewing position on the edge of the round fabric on the support plate 3, which corresponds to the sewing opening of the sewing device 5. Then the sewing device 5 operates to sew the button-attaching webbing to the round fabric.

[0025] The system also includes a control system, which is electrically connected to the rotary drive mechanism 202, the first cylinder 403, the sewing machine 501, the transfer mechanism 7, the clamping assembly 10, the upper webbing assembly 11, the lower webbing assembly 12, the transmission assembly 16, and all cylinders and other actuators. It is also electrically connected to multiple sensors located at each workstation. In this embodiment, material positioning sensors are installed at the outlet of the buckle conveying mechanism 9, the clamping space of the clamping assembly 10, and the outlet of the webbing conveying mechanism 8. These sensors are used to detect the material status in real time and feed the signals back to the control system to coordinate the timing of each mechanism's actions. Visual or photoelectric sensors can also be installed near the clamping claw 703 of the transfer mechanism 7 to identify and grasp the formed buckle-attached webbing and determine its placement coordinates on the edge of the circular fabric.

[0026] like Figure 5-6 As shown, the machine also includes a webbing conveyor mechanism 8 and a buckle conveyor mechanism 9, which are mounted on the machine base 1. The webbing conveyor mechanism 8 and the buckle conveyor mechanism 9 are used to convey the webbing and buckles to the buckling station 6, respectively. The buckling station 6 includes a clamping assembly 10, an upper belt threading assembly 11, and a lower belt threading assembly 12. The clamping assembly 10 clamps the buckles conveyed by the buckle conveyor mechanism 9. The upper belt threading assembly 11 and the lower belt threading assembly 12 are respectively located above and below the clamping assembly 10, and are used to sequentially pass the webbing conveyed by the webbing conveyor mechanism 8 through the buckles from above and below to form a buckled webbing component. During operation, the webbing conveyor mechanism 8 conveys the webbing to the upper surface of the clamping assembly 10, and then the upper belt threading assembly 11 and the lower belt threading assembly 12 move sequentially, driving the webbing to sequentially pass through the buckle's perforation from above and below, and exit from the outside of the perforation from bottom to top to form a U-shaped hook. The aforementioned upper belt assembly 11 and lower belt assembly 12 are arranged in the same workstation, which avoids the belt buckle from being transferred between multiple workstations, simplifies the structure of the robot and the overall size of the machine, and solves the technical problems of complex structure and high manufacturing cost caused by the reciprocating movement of multiple workstations in traditional equipment.

[0027] In this embodiment, as Figure 5 and Figure 14As shown, the webbing conveying mechanism 8 includes a webbing stand 801 vertically fixed on the machine base 1, and shaping rollers 802 rotatably mounted on the webbing stand 801 via bearings. At least one pair of shaping rollers 802 are provided, with smooth surfaces and a certain clamping gap, used to compress and shape the incoming webbing to keep it straight. A guide seat 803 is fixedly installed in front of the discharge end of the shaping rollers 802. A feed chute for conveying the webbing is formed along the length of the guide seat 803. The width and depth of the feed chute are adapted to the webbing, enabling lateral restraint of the webbing and preventing swaying during conveying. A transmission assembly 16 is provided at the end of the guide seat 803 away from the shaping rollers 802, used to drive the webbing forward or backward. The webbing conveyor 8, through the combination of the shaping roller 802 and the guide seat 803, realizes the shaping and guiding of the webbing first, ensuring the stability of the conveying. The transmission component 16 is set at the end of the guide seat, which can push the webbing forward to the fastening station 6 and pull back the fastened webbing, and achieve fixed length in conjunction with the cutting device.

[0028] like Figure 14 As shown: A drive frame 804 is provided above the webbing stand 801. A cutter assembly is provided on one side of the drive frame 804. The cutter assembly includes a cutter head module 805 and a drive mechanism 806 for controlling the up and down movement of the cutter head module 805. The drive mechanism 806 is a cylinder, and its cylinder body is fixed inside the drive frame 804. The cutter head module 805 is connected to its drive end. The cutter head module 805 is a hot cutter used to perform the cutting action. In addition, a baffle is provided at the corresponding position of the webbing stand 801 and the cutter head module 805. The baffle and the cutter head module 805 are arranged vertically. The baffle is a metal part to facilitate cutting. When the transmission assembly 16 pulls the webbing that has been buckled back in the opposite direction, so that the end of the webbing away from the buckle reaches the preset cutting length position, the drive mechanism 806 drives the cutter head module 805 to move down and cut the end of the webbing away from the buckle, resulting in a finished buckled webbing of uniform length.

[0029] Among them, such as Figure 14 As shown: The transmission assembly 16 includes a main drive roller 160, a driven roller 161, and a drive motor 162. The main drive roller 160 and the driven roller 161 are arranged vertically in a corresponding manner. The main drive roller 160 and the driven roller 161 are rotatably mounted on a guide seat 803. A gap is formed between the driven roller 161 and the main drive roller 160 for the webbing to pass through. The drive motor 162 is fixed inside the guide seat 803, and its output shaft is connected to the main drive roller 160 via a synchronous pulley to drive the main drive roller 160 to rotate. When the drive motor 162 rotates forward, the friction between the main and driven rollers drives the webbing forward to the upper surface of the clamping assembly 10. When the drive motor 162 rotates in reverse, it can pull the webbing back to a predetermined length after the webbing has been threaded and fastened for cutting.

[0030] In this embodiment, as Figure 5-6 As shown, the buckle conveying mechanism 9 includes a vibratory feeder 901 and a linear vibrator 902, both commonly used in automated feeding systems. Several buckles are pre-loaded into the vibratory feeder 901. The vibratory feeder 901 vibrates to arrange the buckles one by one along its internal spiral track and output them. The outlet of the vibratory feeder 901 is connected to a material trough 903 on the linear vibrator 902. The linear vibrator 902 generates linear vibration, driving the arranged buckles to continue being smoothly conveyed forward along the material trough 903. A feeding assembly is provided at the outlet of the material trough 903, consisting of a pusher block and a feeding cylinder. When a single buckle reaches the outlet, the feeding cylinder drives the pusher block to push it laterally into the clamping space of the clamping assembly 10, achieving precise feeding of the buckles one by one. Alternatively, the feeding assembly can also be an air-blowing assembly, which can blow the buckles into the clamping space of the clamping assembly 10.

[0031] like Figure 10-12 As shown: The clamping assembly 10 includes a clamping cylinder assembly 100, and a left clamping part 101 and a right clamping part 102 respectively fixed on the two movable clamping ends of the clamping cylinder assembly 100. In this embodiment, the clamping cylinder assembly 100 adopts a finger cylinder or a parallel opening and closing type cylinder. Its two clamping ends can move closer or further away from each other, thereby driving the left clamping part 101 and the right clamping part 102 to form a clamping or releasing action. A space for accommodating and clamping the buckle is formed between the two. A movable baffle 17 is provided on the side of this space near the outlet of the buckle conveying mechanism 9 to block the buckle. The bottom of the clamping cylinder assembly 100 is fixedly connected to the piston rod of a lifting cylinder 103. The cylinder body of the lifting cylinder 103 is installed below the machine base 1. The lifting cylinder 103 is used to control the entire clamping assembly 10 to rise and fall in the vertical direction, so that it has a waiting position at the bottom and a buckle-attaching position at the top. When in the waiting position, the clamping component 10 is aligned with the outlet of the buckle conveying mechanism 9 to facilitate receiving the buckle; when in the buckle-attaching position, the clamping component 10 rises and aligns with the outlet of the webbing conveying mechanism 8 to match the buckle-attaching hole with the webbing path.

[0032] like Figure 5-6As shown: The upper webbing assembly 11 includes a mounting frame fixed on the machine base 1, and a top-pressing cylinder 110 and an upper webbing cylinder 111 mounted on the mounting frame. The piston rod extension ends of the top-pressing cylinder 110 and the upper webbing cylinder 111 are both arranged vertically downward. A lower pressing block 112 is fixed on the extension end of the top-pressing cylinder 110. The lower pressing block 112 is used to align the middle part of the webbing laid flat on the upper surface of the clamping assembly 10 with the through hole and press it downward into the through hole of the buckle. At the same time as pressing, the pressing force is used to press and fix one end of the webbing onto the buckle to prevent the webbing from shifting in subsequent actions. An upper belt threading piece 113 is fixedly installed on the telescopic end of the upper belt threading cylinder 111. The upper belt threading piece 113 is a thin sheet with a width smaller than the buckle hole. During operation, it is driven by the upper belt threading cylinder 111 to move downward, passing the other side of the webbing that is not pressed through the buckle hole from above and bringing it below the hole, thus completing the first pass of one end of the webbing.

[0033] like Figure 12 As shown: The clamping assembly 10 also includes a pusher assembly, which includes a pusher plate 104 and a pusher cylinder 105 for driving the pusher plate 104 to move inward. The pusher plate 104 is used to push the webbing brought in by the upper webbing plate 113 to the right clamping part 102 laterally, so that the end of the webbing extends out of the buckle and corresponds to the position of the lower webbing assembly 12. The clamping assembly 10 also includes a pusher assembly. The pusher assembly 1 includes a pusher plate 104 and a pusher cylinder 105 for controlling the pusher plate 104 to move laterally inward. The cylinder body of the pusher cylinder 105 is fixed to the side of the right clamping part 102. The pusher plate 104 extends into the clamping space from one side of the right clamping part 102. When the upper threading piece 113 brings one end of the webbing to below the buckle hole, the pusher cylinder 105 drives the pusher plate 104 to push the section of webbing laterally inward toward the right clamping part 102, so that it is against the lower part of the right clamping part 102 and extends outward to the side end of the buckle. At the same time, the section of webbing is positioned above the lower threading piece 122 in the lower threading assembly 12, so that it corresponds to the position of the lower threading piece 122.

[0034] like Figure 13 As shown: The under-belt assembly 12 includes an under-belt cylinder 120. The cylinder body of the under-belt cylinder 120 is fixed to one side of the clamping cylinder assembly 100 and can move with the lifting part. The extension end of its piston rod is arranged vertically upward, and a connecting block 121 is fixedly connected to the extension end. An under-belt piece 122 is vertically installed on the connecting block 121. The under-belt piece 122 is thin and located in the space between the left clamping part 101 and the right clamping part 102. When the piston rod of the under-belt cylinder 120 extends upward, the under-belt piece 122 moves upward, pushing the webbing that has been pushed above it by the pusher 104 and has extended beyond the buckle end. It passes through from the outside of the buckle hole upward and back to the top of the buckle, thus completing the second passage of the webbing and forming a complete buckle.

[0035] like Figure 1-2 As shown: The rotating support surface 2 includes a rotating surface 201 and a rotating drive mechanism 202 that drives the rotating surface 201 to rotate. The rotating surface 201 is a flat disc and can rotate under the drive of the rotating drive mechanism 2. In this embodiment, the rotating drive mechanism 2 is an electric rotary table, whose speed and rotation angle can be precisely controlled, so as to drive the round fabric placed on the rotating surface 201 to rotate synchronously, so that the edge of the round fabric passes through the first support surface and the second support surface in sequence, and is transported to the sewing table 502 for sewing.

[0036] The support plate 3 is arranged around the outer periphery of the rotating surface 201. The support plate 3 is annular and includes a first support surface flush with the rotating surface 201 and a second support surface lower than the first support surface. Two functional areas with different heights are formed on its annular surface: the first support surface and the second support surface. The first support surface is an annular plane, flush with the surface of the rotating surface 201, ensuring that the center and edge areas of the circular fabric are at the same level during the initial rotation, guaranteeing the flatness of the fabric. The second support surface is lower than the first support surface and extends to the entrance of the sewing table 502 of the sewing equipment 5, corresponding to the position of the sewing groove on the sewing table 502. The first support surface and the second support surface are connected by a smooth slope or curved surface. By designing the support plate 3 as a ring structure and setting a first support surface flush with the rotating surface and a second support surface lower than the first support surface, the edge of the round fabric can smoothly transition from the first support surface to the second support surface during the rotating feeding process and fall naturally. It then enters the sewing groove area of ​​the sewing table 502 through the sewing opening via an upward inclined edge. This effectively avoids fabric wrinkles, jamming, or curling caused by abrupt changes in height, ensuring the flatness and smoothness of the round fabric edge when entering the sewing area.

[0037] like Figure 2 As shown: The sewing device 5 is positioned on one side of the support plate 3, and includes a sewing machine 501 and a sewing table 502. The sewing table 502 is located outside the first support surface and in front of the support plate 3. The sewing table 502 has a sewing groove for the sewing machine needle to pass through, and the fabric inlet position of this sewing groove corresponds to the position of the second support surface of the support plate 3. In actual operation, the rotating surface 201 drives the circular fabric to rotate. After the edge of the fabric passes through the first support surface, it smoothly descends to the second support surface via a transition slope, and then smoothly enters the sewing groove area of ​​the sewing table 502. During this process, the conveying mechanism can grab the webbing and place it on the sewing table 502 so that it aligns vertically with the circular fabric, and then the sewing machine 501 completes the sewing operation.

[0038] like Figure 2As shown: A moving component 503 is provided below the sewing machine 501. The moving component 503 is used to move the circular fabric back and forth relative to the sewing table 502. Figure 7-8 As shown: The moving component 503 includes a second cylinder and a crossbeam 504. The second cylinder is fixed on the machine base 1, and the crossbeam 504 is connected to the drive end of the second cylinder. The second cylinder is used to drive the crossbeam 504 to move closer to or away from the sewing table 502. A pressing component 14 is installed on the crossbeam 504. In this embodiment, the crossbeam 504 has a groove along its length, and a slider that slides in cooperation with it is provided in the groove. The pressing component 14 is installed on the slider.

[0039] By setting a moving component 503 below the sewing equipment 5, the second cylinder drives the crossbeam 504 to move closer to or further away from the sewing table 502. In conjunction with the pressing component 14 installed on the crossbeam 504, the edge of the round fabric is pressed. This enables the round fabric to move back and forth relative to the sewing table 502 during the rotating feeding process. Specifically, after the pressing component 14 presses the round fabric, it can drive the round fabric to move back and forth. During this process, the sewing machine 501 starts to work, and in conjunction with the sewing table 502, the round fabric is moved along with the sewing machine to complete the sewing work between the round fabric and other accessories.

[0040] In this embodiment, as Figure 7-8 As shown: The pressing assembly 14 includes a fixed base 140, a third cylinder 141, a drive plate 142, and a pressing block 143. The fixed base 140 is installed on the cross frame 504 and can move laterally through the cooperation of a slider and a slide groove to flexibly adapt to the edge pressing position of fabrics of different diameters. The fixed base 140 is equipped with a third cylinder 141 on both the left and right sides. A drive plate 142 is hinged to each of the left and right front ends. One end of the drive plate 142 is hinged to the fixed base 140, and the other end is connected to the drive end of the corresponding third cylinder 141. The pressing block 143 is fixedly connected to its front end. When the piston rod of the third cylinder 141 extends or retracts, it pushes or pulls the drive plate 142 to rotate around its hinge point, thereby driving the pressing block 143 to press down to press the fabric or lift up to release the fabric. In the compressed state, the pressure block 143 presses the edge of the circular fabric onto the sewing table 502. At this time, driving the second cylinder can cause the pressure block 143 and the circular fabric to move back and forth relative to the sewing table 502. During this process, the sewing machine needle 501, in conjunction with the sewing table 502, can complete the sewing work. In addition, to avoid interference between the pressure block 143 and the sewing machine needle 501, a clearance slot 144 is specially provided on the pressure block 143 at the position corresponding to the sewing groove. This slot 144 provides sufficient safety space for the needle to work, ensuring the synchronous and coordinated operation of the pressure and sewing actions.

[0041] like Figure 2-4As shown: The pressing mechanism 4 includes a fixed frame 401 and a pressing head 402. The pressing head 402 includes a first cylinder 403, a support frame 404, a pressing plate 405, multiple abutting rods 406, and pressing feet 407. Specifically, the driving direction of the first cylinder 403 is perpendicular to the rotating surface 201, and its driving end extends downward. The support frame 404 is fixedly connected to the driving end of the first cylinder 403. The pressing plate 405 is fixedly installed below the support frame 404. The pressing plate 405 can rotate synchronously with the rotating surface 201 or be driven to rotate by the rotating surface 201. Multiple evenly distributed abutting rods 406 are connected to the edge of the pressing plate 405. Each abutting rod 406 has a pressing foot 407 fixed at its lower end for contacting the fabric. When the first cylinder 403 drives the entire assembly to move downward, the multiple pressing feet 407 simultaneously contact and press down on the round fabric, firmly pressing the central area of ​​the round fabric against the rotating surface 201. This structure, which uses multiple abutment rods 406 to connect multiple presser feet 407 for distributed pressing, can evenly distribute the single-point driving force of the cylinder to multiple symmetrical points in the central area of ​​the circular fabric, forming a multi-point, ring-shaped pressing force.

[0042] To further optimize the pressing effect and adaptability, a soft layer made of materials such as sponge or silicone can be added to the bottom of the pressure plate 405 to prevent it from causing indentations or damage when it accidentally comes into contact with round fabric. Additionally, the pressure plate 405 and the support frame 404 can be connected in an adjustable manner, such as through a guide post and spring, giving the pressure plate 405 a certain degree of elastic cushioning and self-adjustment during pressing to adapt to fabrics of different thicknesses and maintain pressure.

[0043] In this embodiment, as Figure 2 As shown: The top of the fixed frame 401 has a top frame 408 extending forward to directly above the rotating surface 201. A linear module 409 is mounted on the top frame 408. The linear module 409 can precisely drive the components mounted on it to adjust their positions laterally. The pressing head 402 is mounted on the linear module 409 via a first cylinder 403. This allows the lateral position of the entire pressing head 402 to be flexibly adjusted, thereby accurately finding the center position of circular fabrics of different diameters. This ensures that the pressing point is always located in the center area of ​​the circular fabric, improving the equipment's versatility for fabrics of different specifications.

[0044] like Figure 1As shown: The transfer mechanism 7 includes a transverse drive 701 and a longitudinal drive 702, and a clamping claw 703 disposed on the driving end of the transverse drive 701 or the longitudinal drive 702. In this embodiment, the clamping claw 703 is a clamping cylinder with two clamping ends arranged vertically and equipped with clamps. The transverse drive 701 and the longitudinal drive 702 are linear modules, which are orthogonally combined to form a moving frame. The clamping claw 703 is installed on the final driving end of the moving frame, enabling point-to-point movement within a planar space. The clamping claw 703 is used to pick up the buckled and cut-to-length webbing from the buckling station 6, and, with the synergistic action of the transverse and longitudinal drive components, transfer and place it at a preset position on the edge of the circular fabric on the support plate 3, i.e., at the sewing opening of the sewing device 5. During this process, the clamping cylinder assembly 100 drives the left clamping part 101 and the right clamping part 102 on its clamping end to move away from each other, thereby releasing the clamped webbing piece so that the clamping claw 703 can grasp it.

[0045] like Figure 9 As shown: A tail-folding mechanism 13 is provided on one side of the clamping assembly 10. The tail-folding mechanism 13 is used to fold the raised tail of the webbing after the lower webbing piece 122 is passed back above the buckle and flatten it and cover it with the webbing surface of the clamping assembly 10, so that the end of the webbing after passing through the buckle is flat. The tail-folding mechanism 13 specifically includes a main push cylinder 130 and a secondary push cylinder 131. A mounting plate is fixed on the machine base 1 near the guide seat 803. The main push cylinder 130 is mounted on the mounting plate at a certain angle, and its piston rod extends... The main push cylinder 130 is driven by a plate base 132 fixedly connected to the drive end of the main push cylinder 130. The cylinder body of the secondary push cylinder 131 is mounted on the plate base 132. The piston rod of the secondary push cylinder 131 is arranged perpendicularly to the drive end of the main push cylinder 130. An adjusting plate 133 is mounted on the drive end of the secondary push cylinder 131. A rotary drive cylinder 134 is mounted on the adjusting plate 133. A rack 135 is connected to the drive end of the rotary drive cylinder 134. A slide block 136 is fixed on the adjusting plate 133 at a position relative to the rack 135. The rack 135 and the slide block 136 slide to form a linear guide. A toggle shaft 137 is also passed through the adjusting plate 133 via a bearing. A gear 138 is fixedly sleeved on the toggle shaft 137. The gear 138 meshes with the rack 135. The main push cylinder 130 and the secondary push cylinder 131 are used to adjust the position of the actuating shaft 137 to bring it closer to or away from the webbing on the clamping assembly 10.

[0046] During operation, the rotary drive cylinder 134 drives the rack 135 to reciprocate linearly, which in turn drives the actuating shaft 137 to rotate via the gear 138. One end of the actuating shaft 137 extends towards one side of the clamping assembly 10, and a fork 139 is fixed to its end. The fork 139 can extend into the upper and lower sides of the raised webbing. When the tail is folded, the main push cylinder 130 and the secondary push cylinder 131 send the fork 139 to the tail of the webbing. The rotary drive cylinder 134 drives the fork 139 to rotate at a certain angle, and the fork 139 pushes the tail of the webbing to flip over and fold flat against the buckle or the main body of the webbing.

[0047] The folding mechanism also includes a lateral alignment component, which comprises an alignment cylinder, an alignment plate 1301, and a mounting bracket. The cylinder body of the alignment cylinder is fixed to one side of the secondary push cylinder 131 via the bracket. Its piston rod extension direction is perpendicular to and horizontally positioned with respect to the webbing conveying direction. The alignment plate 1301 is fixed to the end of the piston rod, and its working surface is a rectangular thin plate that faces the side of the folded webbing. Specifically, after the shift fork 139 completes the folding action, the control system commands the alignment cylinder to extend, and the alignment plate 141 lightly touches the side of the webbing tail from the outside and continues to push inward until the side of the webbing tail is flush with the side of the original webbing that has been positioned above. Then the aligning cylinder retracts, and the tail-folding action is completely completed. In addition, in order to make the side of the folded webbing flush with the side of the original webbing, a baffle is provided on the side of the clamping component 10 away from the aligning plate 1301. When the original webbing enters the clamping component 10 above the feed chute, one side of it abuts against the baffle.

[0048] By adding a lateral alignment device to the original folding mechanism, the problem of the webbing tail deviating laterally and misaligning with the upper original webbing after folding was solved. This improved the forming quality and consistency of the buckle webbing, making the buckles sewn onto the round fabric neater and more aesthetically pleasing, further enhancing the automation level of the equipment and the product yield.

[0049] The working principle and process of this invention are as follows: First, the vibratory feeder 901 and the linear vibrator 902 of the buckle conveying mechanism 9 transport a single buckle in an array to the material trough 903 outlet, where the feeding assembly pushes it into the clamping space of the clamping assembly 10. Then, the lifting cylinder 103 drives the entire clamping assembly 10 from the waiting position to the buckle insertion position. Next, the drive motor 162 of the webbing conveying mechanism 8 rotates forward, and through the frictional engagement of the main drive roller 160 and the driven roller 161, the webbing is smoothly conveyed forward from the shaping roller 802 and the guide seat 803, so that the front end of the webbing lies flat on the upper surface of the clamping assembly 10, which has risen to the buckle insertion position, and covers the buckle clamped by the left clamping part 101 and the right clamping part 102. At this time, as... Figure 15 The webbing shown crosses above the buckle hole and is in the ready-to-be-fastened state.

[0050] Subsequently, the piston rod of the top-pressing cylinder 110 in the threading assembly 11 extends downward, driving the lower pressing block 112 to press vertically downward. The bottom end of the lower pressing block 112 presses the center of the flat webbing into the buckle's through hole, causing the webbing to form a partial indentation and enter the through hole. At the same time, the pressing surface of the lower pressing block 112 firmly presses one end of the webbing onto the side wall of the buckle, preventing the webbing from loosening or shifting during subsequent threading. Figure 16 As shown. Subsequently, the top-pressing cylinder 110 remains in the downward pressurized state, and the piston rod of the upper-threading cylinder 111 extends, driving the thin-plate-shaped upper-threading strip 113 to move downward. The upper-threading strip 113 inserts the unpressed portion of the webbing from above the buckle hole through the inside of the hole to below the hole, completing the first pass of one end of the webbing, causing that section of webbing to hang down in the space below the buckle, as shown. Figure 17 As shown.

[0051] Next, the pusher assembly begins to operate. The piston rod of the pusher cylinder 105 extends, driving the pusher plate 104 to move laterally inward. This pushes the section of webbing brought from the upper webbing plate 113 to below the perforation laterally, causing it to abut against the inner side of the right clamping part 102. The free end of this section of webbing further extends beyond the side edge of the buckle and is positioned directly above the lower webbing plate 122. Figure 18 As shown. After completion, the pusher 104 can be held or slightly retracted, and the upper belt 113 and the top pressure cylinder 110 can be reset or held as needed.

[0052] Subsequently, the underbelly strap assembly 12 begins operation. The piston rod of the underbelly strap cylinder 120 extends upward, driving the underbelly strap plate 122 to rise via the connecting block 121. The upper end face of the underbelly strap plate 122 pushes the section of webbing that is already above it and extends beyond the buckle, driving this section of webbing to pass through from bottom to top from the outside of the buckle hole, ultimately bringing it back above the buckle. Figure 19 As shown. At this point, this end of the webbing joins the end previously fixed by the lower pressure block 112 above the buckle, and the entire webbing forms a complete U-shaped buckle structure around the buckle hole, completing the forming of the buckled webbing component. Afterwards, the cylinders of the upper webbing assembly 11 and the lower webbing assembly 12 are sequentially reset.

[0053] After the webbing is formed, the tail of the webbing will curl upwards. At this time, the tail-folding mechanism 13 located on one side of the clamping assembly 10 is activated. The main push cylinder 130 and the secondary push cylinder 131 work together to bring the folding assembly, composed of the rotary drive cylinder 134, rack 135, gear 138, actuating shaft 137, and fork 139, closer to the tail of the webbing. Subsequently, the rotary drive cylinder 134 pushes the rack 135 to move linearly, which drives the actuating shaft 137 to rotate through the gear 138. This causes the fork 139 fixed at the end of the actuating shaft 137 to swing and pass through the upper and lower sides of the curled tail of the webbing. Figure 20As shown. Next, under the continuous drive of the rotary drive cylinder 134, the shift fork 139 rotates at a certain angle, causing the tail of the webbing to flip and flatten, so that it fits tightly against the buckle or the upper surface of the webbing body, as shown. Figure 21 As shown. After the tail is folded, the shift fork 139 rotates in the reverse direction to retract, and then returns to its original position under the drive of the main push cylinder 130 and the secondary push cylinder 131. After the tail is flattened, the transmission assembly 16 begins to move in the reverse direction. The drive motor 162 reverses, pulling the webbing that has been buckled and folded back as a whole through the main drive roller 160 and the driven roller 161. The webbing moves smoothly backward in the feed groove of the guide seat 803. When the end of the webbing away from the buckle reaches the preset cutting length position, the drive motor 162 stops, as shown. Figure 22 As shown. Next, the drive mechanism 806 in the cutter assembly drives the cutter head module 805 to move downwards, cooperating with the metal baffle to cut off that end of the webbing, thereby obtaining the webbing insert. After cutting, the cutter head module 805 immediately resets, as shown. Figure 23 As shown. At this time, the webbing component is still held by the clamping assembly 10 and is in a ready-to-remove state.

[0054] Finally, the gripping claw 703 of the transfer mechanism 7 moves above the gripping assembly 10 under the linkage of the transverse drive 701 and the longitudinal drive 702, picking up the webbing. During this process, one side of the gripping assembly 10 has a slot for the gripping claw 703 to pass through its upper and lower sides to grip the webbing. The gripping assembly 10 is released, and the transfer mechanism 7 transfers the webbing and places it on the predetermined position of the edge of the round fabric on the support plate 3, which is directly opposite the sewing opening of the sewing machine 5. At the sewing station, the pressing mechanism 4 has pressed the center area of ​​the round fabric onto the rotating support surface 2. The rotating drive mechanism 202 drives the rotating surface 201 and the round fabric to rotate at a uniform speed. The edge of the fabric is fed into the sewing table 502 through the smooth support surface of the support plate 3. The moving assembly 503 cooperates with the pressing assembly 14 to press and finely adjust the position of the fabric. The sewing machine 501 then completes the sewing of the webbing and round fabric.

[0055] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A fully automatic circular fabric button-threading sewing machine, characterized in that, include: The machine base (1) is provided with a rotating support surface (2) and a support plate (3) for supporting the round fabric. A pressing mechanism (4) is disposed above the rotating support surface (2) and can be close to or away from the rotating support surface (2). A sewing device (5) is disposed on one side of the support piece (3); The button-threading station (6) is located upstream of the sewing equipment (5) and is used to process button-threaded webbing parts; The transfer mechanism (7) is used to transfer the buckle webbing on the buckle station (6) and place it on the edge of the round fabric on the tray (3), and the position corresponds to the sewing opening of the sewing device (5), through which the buckle webbing is sewn to the round fabric.

2. The fully automatic circular fabric button-threading sewing machine according to claim 1, characterized in that: It also includes a webbing conveying mechanism (8) and a buckle conveying mechanism (9), which are arranged on the machine base (1). The webbing conveying mechanism (8) and the buckle conveying mechanism (9) are used to convey the webbing and buckle to the buckling station (6), respectively. The buckling station (6) includes a clamping assembly (10), an upper belt threading assembly (11), and a lower belt threading assembly (12). The clamping assembly (10) is used to clamp the buckle conveyed by the buckle conveying mechanism (9). The upper belt threading assembly (11) and the lower belt threading assembly (12) are respectively located above and below the clamping assembly (10) and are used to pass the webbing conveyed by the webbing conveying mechanism (8) through the buckle sequentially from above and below to form a buckled webbing component.

3. The fully automatic circular fabric button-threading sewing machine according to claim 2, characterized in that: The clamping assembly (10) includes a clamping cylinder assembly (100), and a left clamping part (101) and a right clamping part (102) respectively disposed on the two clamping ends of the clamping cylinder assembly (100). The left clamping part (101) and the right clamping part (102) can move closer to each other or further away from each other, and a space for clamping buckles is formed between them. The bottom of the clamping cylinder assembly (100) is connected to a lifting cylinder (103), which is used to drive the clamping assembly (10) to rise and fall, so that it switches between a waiting position corresponding to the outlet of the buckle conveying mechanism (9) and a buckle-fastening position corresponding to the outlet of the webbing conveying mechanism (8).

4. The fully automatic circular fabric button-threading sewing machine according to claim 3, characterized in that: The upper webbing assembly (11) includes a mounting frame, and a top-pressing cylinder (110) and an upper webbing cylinder (111) fixed on the mounting frame. The telescopic ends of the top-pressing cylinder (110) and the upper webbing cylinder (111) are both arranged downwards. A lower pressing block (112) is fixed on the telescopic end of the top-pressing cylinder (110). The lower pressing block (112) is used to initially press the webbing into the through hole of the buckle in the clamping assembly (10) and press one end of the webbing onto the buckle. An upper webbing plate (113) is provided on the telescopic end of the upper webbing cylinder (111). The upper webbing plate (113) is used to bring the other end of the webbing from above the through hole of the buckle to below the through hole.

5. The fully automatic circular fabric button-threading sewing machine according to claim 4, characterized in that: The clamping assembly (10) further includes a pusher assembly, which includes a pusher plate (104) and a pusher cylinder (105) for driving the pusher plate (104) to move inward. The pusher plate (104) is used to push the webbing brought in by the upper webbing plate (113) to the right clamping part (102) laterally, so that the end of the webbing extends out of the buckle and corresponds to the position of the lower webbing assembly (12).

6. The fully automatic circular fabric button-threading sewing machine according to claim 5, characterized in that: The underbelly strap assembly (12) includes an underbelly strap cylinder (120), which is fixed to one side of the clamping cylinder assembly (100). The telescopic end of the underbelly strap cylinder (120) is arranged upward, and a connecting block (121) is provided on it. An underbelly strap piece (122) is vertically arranged on the connecting block (121). The underbelly strap piece (122) is located between the left clamping part (101) and the right clamping part (102). The underbelly strap piece (122) is used to bring the webbing pushed by the pusher (104) to the inside of the clamping assembly (10) and extending out of the buckle end from the outside of the buckle hole to the top of the buckle.

7. The fully automatic circular fabric button-threading sewing machine according to claim 1, characterized in that: The rotating support surface (2) includes a rotating surface (201) and a rotating drive mechanism (202) for driving the rotating surface (201) to rotate. The support piece (3) is arranged around the outer periphery of the rotating surface (201). The support piece (3) is annular. The support piece (3) includes a first support surface flush with the rotating surface (201) and a second support surface with a height lower than the first support surface. The sewing device (5) includes a sewing machine (501), a sewing table (502), and a moving component (503) disposed below the sewing machine (501). The sewing table (502) is disposed on one side of the first support surface, and the sewing opening of the sewing table (502) corresponds to the position of the second support surface. The moving component (503) is used to drive the round fabric to move back and forth relative to the sewing table (502).

8. The fully automatic circular fabric button-threading sewing machine according to claim 1, characterized in that: The pressing mechanism (4) includes a fixed frame (401) and a pressing head (402). The pressing head (402) includes a first cylinder (403), a support frame (404), a pressure plate (405), multiple abutting rods (406), and a pressing foot (407). The driving direction of the first cylinder (403) is perpendicular to the rotating support surface (2). The support frame (404) is fixed on the driving end of the first cylinder (403). The pressure plate (405) is fixed below the support frame (404). One end of each of the multiple abutting rods (406) is connected to the pressure plate (405), and the other end is fixed with the pressing foot (407). The pressing foot (407) is used to press the round fabric against the rotating support surface (2).

9. The fully automatic circular fabric button-threading sewing machine according to claim 1, characterized in that: The transfer mechanism (7) includes a transverse drive (701) and a longitudinal drive (702), and a gripping claw (703) disposed on the drive end of the transverse drive (701) or the longitudinal drive (702). The gripping claw (703) is used to pick up the buckle webbing after it is formed at the buckle station (6) and transfer it to the edge of the round fabric.

10. The fully automatic circular fabric button-threading sewing machine according to claim 6, characterized in that: The clamping assembly (10) is provided with a tail-folding mechanism (13) on one side. The tail-folding mechanism (13) is used to fold the tail of the webbing brought out by the lower webbing piece (122) flat and press it against the clamping assembly (10).

Images