Sewing machine for nylon zippers

Abstract

The utility model discloses a kind of sewing machines of nylon zipper, it is related to sewing machine technical field.The utility model includes nylon zipper sewing machine and sewing table, limiting table is provided on sewing table, locking device is provided in sewing table, locking device includes transmission rod, limit pin, sleeve, spring and limiting rod, multiple placing holes are opened in the lateral wall of transmission rod, limiting rod is slidably connected in placing hole, spring both ends are connected limiting rod and placing hole bottom end respectively, sleeve is sleeved on the lateral wall of transmission rod, through hole is opened in the lateral wall of sleeve, limiting hole is opened on the inner wall of rotary hole, pin slot is opened on the lateral wall of limiting table, the utility model is cooperated by transmission rod, limit pin, sleeve, spring and limiting rod, the quick fixing and unlocking of limiting table transversely are realized, the cooperation of limiting block and sliding slot is completed, limiting table longitudinal locking is completed, thereby the quick disassembly and accurate installation of limiting table are realized, the quick switching of different specifications limiting table is realized.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to a sewing machine for nylon zippers. Background Technology

[0002] In the production and processing of nylon zippers, sewing is a crucial process. It requires a specialized sewing machine to complete the sewing operation on a sewing table. To ensure sewing accuracy, the position of the nylon zipper during the sewing process needs to be effectively restricted. Therefore, a limiting structure is usually set on the sewing table.

[0003] Traditional nylon zipper sewing machines typically use a limit structure that is directly bolted to the sewing table. When different specifications of nylon zippers need to be produced, the limit structure needs to be replaced or a new production line needs to be built. However, most manufacturers, for cost reasons, do not choose to build a new production line but instead choose to replace the limit structure. In actual replacement, the bolt-fixed method makes it difficult to quickly disassemble and replace the appropriate limit components, resulting in excessive downtime and low production efficiency. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a sewing machine for nylon zippers to solve the technical problem of not being able to quickly change the limiting structure.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a nylon zipper sewing machine, comprising a nylon zipper sewing machine and a sewing table. A limiting platform for restricting the position of the nylon zipper is detachably connected to the top of the sewing table. A locking device for fixing the limiting platform is rotatably connected inside the sewing table. The locking device includes a transmission rod, a limiting pin, a sleeve, a spring, and a limiting rod. Multiple placement holes are evenly distributed on the side wall of the transmission rod. The limiting rod is slidably connected within the placement holes. The two ends of the spring are respectively connected to the limiting rod and the bottom end of the placement hole. A rotation hole for rotatably connecting the transmission rod is provided on the side wall of the sewing table. The limiting pin is fixedly connected to one end of the transmission rod, and the other end of the transmission rod is placed outside the sewing table. The sleeve is sleeved on the side wall of the transmission rod. A through hole for the limiting rod to pass through is provided on the side wall of the sleeve. A limiting hole for engaging with the limiting rod is provided on the inner wall of the rotation hole. A pin groove for engaging with the limiting pin is provided on the side wall of the limiting platform.

[0006] By adopting the above technical solution, and by setting a detachable limiting platform on the sewing table, the limiting platform can be quickly replaced according to different specifications of nylon zippers, greatly improving the versatility and flexibility of the equipment. This solves the problem of poor adaptability of traditional fixed limiting structures. At the same time, the locking device design ensures reliable fixation of the limiting platform. The structure of the transmission rod, limiting pin, sleeve, spring, and limiting rod can limit the position of the limiting platform through the cooperation of the limiting pin and the pin groove, and can also fix the transmission rod by pushing the limiting rod into the limiting hole with the help of the spring. This prevents the limiting platform from shifting due to vibration during the sewing process, ensuring sewing accuracy. Moreover, the operation is simple; the installation and removal of the limiting platform can be completed by simply rotating the transmission rod, effectively improving production efficiency.

[0007] Furthermore, the sewing table is provided with an installation groove for installing a limiting platform, a limiting block is fixedly connected to the side wall of the limiting platform, and a sliding groove for cooperating with the limiting block is provided on the side wall of the installation groove.

[0008] By adopting the above technical solution, the mounting groove of the sewing table cooperates with the limiting block of the limiting table and the sliding groove on the side wall of the mounting groove, providing a precise guiding effect for the installation of the limiting table. This ensures that the limiting table can be quickly aligned during installation, reducing installation and adjustment time and improving installation efficiency. The sliding cooperation between the limiting block and the sliding groove further restricts the longitudinal displacement of the limiting table during the sewing process. Together with the locking device, it enhances the stability of the fixed limiting table and prevents the limiting table from shaking or shifting under force, thereby ensuring the positional accuracy of the nylon zipper during sewing.

[0009] Furthermore, the top of the limiting platform is provided with a pinhole, one side of the limiting platform is provided with a combined feeding hole, and the side of the limiting platform away from the combined feeding hole is provided with a combined discharging hole.

[0010] By adopting the above technical solution, the needle hole design at the top of the limiting table provides a sewing channel for the sewing needle of the sewing machine, ensuring that the sewing machine can work normally. The combination of the feed hole and the discharge hole provides a stable path for the nylon zipper to be conveyed, so that the zipper can smoothly enter and exit the limiting table during the sewing process, reducing jamming or pulling caused by poor conveying, ensuring the continuity of the sewing process, and helping to improve production efficiency.

[0011] Furthermore, the end of the limiting rod away from the spring is hemispherical, the diameter of the hemispherical shape is smaller than the cross-sectional diameter of the limiting rod, the side wall of the limiting rod fits against the inner wall of the placement hole, and the diameter of the hemispherical shape is the same as the diameter of the limiting hole.

[0012] By adopting the above technical solution, the end of the limiting rod away from the spring is designed as a hemispherical shape with the same diameter as the limiting hole. This reduces the frictional resistance when the limiting rod and the limiting hole are engaged, allowing the limiting rod to slide more smoothly into or out of the limiting hole during the rotation of the transmission rod. This reduces operational resistance and improves the ease of operation of the locking device. The side wall of the limiting rod fits against the inner wall of the placement hole, ensuring the stability of the limiting rod during sliding and preventing it from tilting or getting stuck. The design of the hemispherical diameter being smaller than the cross-sectional diameter of the limiting rod prevents the limiting rod from sliding excessively into the limiting hole, ensuring that the engagement between the limiting rod and the limiting hole is both reliable and easy to separate, thus enhancing the working stability of the locking device.

[0013] Furthermore, a control knob is fixedly connected to one end of the rotating rod located outside the sewing table.

[0014] By adopting the above technical solution, the control knob is fixedly connected to one end of the transmission rod outside the sewing table, providing the operator with a convenient force application point to rotate the transmission rod, making the rotation operation more labor-saving and reducing the labor intensity of the operator. Especially when frequently changing the limit table, it can significantly improve the operating efficiency, facilitate the operator to accurately adjust the matching position of the limit pin and the pin groove, as well as the alignment of the limit rod and the limit hole, and ensure that the locking device can accurately fix or unlock the limit table, avoiding insecure fixing or difficult disassembly due to improper operation, thus improving the reliability and convenience of equipment operation.

[0015] Furthermore, four placement holes are provided on the side wall of the rotating rod, with adjacent placement holes forming a 90° angle.

[0016] By adopting the above technical solution, four placement holes with a 90° included angle are opened on the side wall of the transmission rod, so that the limiting rod can cooperate with the limiting holes in four different directions. This increases the fixed stops of the transmission rod, allowing the operator to rotate it according to the specified rotation angle, improving operational standardization and work efficiency. At the same time, the 90° included angle design ensures that the positions of adjacent limiting rods are evenly distributed, ensuring that the limiting rods can cooperate with the limiting holes in sequence and orderly when the transmission rod rotates, avoiding jamming or misalignment, and ensuring the stability of the locking device.

[0017] Furthermore, the sewing table is provided with a rotating groove for rotating the limiting pin, and the bottom of the rotating groove and the bottom of the pin groove are in the same plane.

[0018] By adopting the above technical solution, the rotating groove inside the sewing table provides a stable rotation space for the limiting pin, avoiding interference between the limiting pin and the internal structure of the sewing table during rotation, ensuring the smooth rotation of the limiting pin, and making it easier for operators to complete the locking or unlocking operation of the limiting table. At the same time, the bottom of the rotating groove and the bottom of the pin groove are in the same plane, ensuring that the limiting pin can fit tightly with the bottom of the pin groove when it is engaged, enhancing the fixing effect of the limiting pin on the limiting table, preventing the limiting table from axial displacement due to force during sewing, and further improving the stability of the limiting table fixation.

[0019] Furthermore, the combined feed inlet and the combined discharge outlet are connected to form a stitching channel, which has a T-shaped structure.

[0020] By adopting the above technical solution, the T-shaped sewing channel formed by connecting the combined feed hole and the combined discharge hole can better adapt to the structural characteristics of nylon zippers. This allows the zipper belt and the slider to be located in different parts of the channel during the conveying process, avoiding mutual interference, ensuring the smooth conveying of the zipper, and reducing the occurrence of jamming. At the same time, the T-shaped sewing channel provides a more reasonable spatial layout for the sewing operation, making it easier for the sewing machine's sewing components to accurately act on the sewing position of the zipper, improving the accuracy and stability of the sewing. Furthermore, the overall design of the channel allows the zipper to maintain good tension during the sewing process, which is conducive to improving the sewing quality and increasing the product qualification rate.

[0021] In summary, the present invention has the following main advantages: 1. This utility model achieves rapid lateral fixing and unlocking of the limiting platform through the cooperation of transmission rod, limiting pin, sleeve, spring and limiting rod, and completes longitudinal locking of the limiting platform through the cooperation of limiting block and slide groove, thereby realizing rapid disassembly and assembly and precise installation of the limiting platform, and realizing rapid switching of limiting platforms of different specifications. 2. This utility model, through the combination of placement holes, through holes, limiting holes and rotating rods, restricts the fixed angle of rotation of the rotating rod, forming a fixed operating procedure and standard, thereby improving the efficiency of disassembly and assembly. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Enlarged structural diagram at point A; Figure 3 This is a schematic diagram of the fixing device of this utility model; Figure 4 This is a structural schematic diagram of the cross-section of the fixing device of this utility model; Figure 5This is a schematic diagram of the structure of the limiting platform of this utility model; Figure 6 This is a schematic diagram of the connection structure between the limiting rod and the sewing table of this utility model; Figure 7 This is a schematic diagram of the fitting structure of the limiting pin and the sewing table in this utility model; Figure 8 This is a front view schematic diagram of the sewing table of this utility model.

[0023] In the diagram: 1. Nylon zipper sewing machine; 2. Sewing table; 3. Limiting table; 4. Transmission rod; 5. Limiting pin; 6. Sleeve; 7. Spring; 8. Limiting rod; 9. Placement hole; 10. Rotating hole; 11. Through hole; 12. Limiting hole; 13. Pin groove; 14. Mounting groove; 15. Limiting block; 16. Slide groove; 17. Needle hole; 18. Control knob; 19. Rotating groove; 20. Sewing channel. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] In this embodiment: A sewing machine for nylon zippers, such as Figure 1-8As shown, the device includes a nylon zipper sewing machine 1 and a sewing table 2. The nylon zipper sewing machine 1 is the main working component, used to sew nylon zippers. The sewing table 2 provides a support platform for zipper sewing. A limiting plate 3 for limiting the position of the nylon zipper is detachably connected to the top of the sewing table 2. This limiting plate 3 can be flexibly replaced according to the zipper specifications, achieving precise positioning by conforming to the shape of the zipper. A locking device for fixing the limiting plate 3 is rotatably connected inside the sewing table 2. The locking device can quickly and easily fix the limiting plate 3 through the cooperation of the mechanical structure. The unlocking and locking device includes a transmission rod 4, a limiting pin 5, a sleeve 6, a spring 7, and a limiting rod 8. These components work together to form a complete locking and unlocking transmission system. Multiple placement holes 9 are evenly distributed on the side wall of the transmission rod 4. These holes 9 accommodate the limiting rod 8 and the spring 7, providing them with installation space. The limiting rod 8 is slidably connected within the placement holes 9, allowing it to extend and retract axially within the holes, thus cooperating with other components. The spring 7 is connected at both ends to the limiting rod 8 and the bottom of the placement hole 9, respectively. The elastic force of the spring 7 can push the limiting rod 8 outwards. The transmission rod 4 extends outwards but retracts under stress. A rotating hole 10 is provided on the side wall of the sewing table 2 for rotatably connecting the transmission rod 4. The rotating hole 10 provides rotational support for the transmission rod 4, ensuring its stable rotation. A limiting pin 5 is fixedly connected to one end of the transmission rod 4 and rotates synchronously with it. It achieves lateral locking of the limiting table 3 by cooperating with the pin groove 13. The other end of the transmission rod 4 is placed outside the sewing table 2, facilitating rotation by the operator. A sleeve 6 is fitted onto the side wall of the transmission rod 4, with the outer wall of the sleeve 6 fitting against the inner wall of the rotating hole 10. The sleeve 6 has a through hole 11 on its side wall for the limit rod 8 to pass through. The through hole 11 provides a channel for the limit rod 8 to extend out of the sleeve 6 and cooperate with the limit hole 12, while limiting the limit rod 8 to extend too far. The inner wall of the rotating hole 10 has a limit hole 12 for cooperating with the limit rod 8. When the limit hole 12 is engaged with the limit rod 8, it can fix the position of the transmission rod 4 and prevent it from rotating at will. The side wall of the limiting platform 3 has a pin groove 13 for cooperating with the limit pin 5. After the pin groove 13 is engaged with the limit pin 5, it can limit the movement of the limiting platform 3 and realize the fixation of the limiting platform 3. See Figure 1 , Figure 2 , Figure 3 , Figure 4 The sewing table 2 has an installation groove 14 for installing the limiting table 3. The size of the installation groove 14 is adapted to the limiting table 3 to provide installation positioning for the limiting table 3. A limiting block 15 is fixedly connected to the side wall of the limiting table 3. The limiting block 15 moves together with the limiting table 3 and is parallel to the horizontal plane. A sliding groove 16 is provided on the side wall of the installation groove 14 to cooperate with the limiting block 15. The sliding groove 16 and the limiting block 15 slide to ensure the longitudinal limiting of the limiting table 3. See Figure 1 , Figure 2 , Figure 8The top of the limiting platform 3 is provided with a needle hole 17, which corresponds to the position of the sewing needle of the sewing machine, providing a path for the sewing needle to pass through the limiting platform 3 to sew the zipper. A combined feeding hole is provided on one side of the limiting platform 3, which is used for the nylon zipper to enter the limiting platform 3. Its shape is adapted to the structure of the zipper feeding end. A combined discharging hole is provided on the side of the limiting platform 3 away from the combined feeding hole, which is used for the sewn nylon zipper to pass out of the limiting platform 3, ensuring the continuity of zipper conveying. See Figure 3 , Figure 4 , Figure 6 The end of the limiting rod 8 furthest from the spring 7 is hemispherical. The hemispherical design reduces friction when the limiting rod 8 contacts other parts, facilitating smooth sliding. The diameter of the hemispherical shape is smaller than the cross-sectional diameter of the limiting rod 8, forming a stepped structure that prevents the limiting rod 8 from overextending into the limiting hole 12. The side wall of the limiting rod 8 fits against the inner wall of the placement hole 9, ensuring that the limiting rod 8 will not tilt when sliding in the placement hole 9, thus improving movement stability. The diameter of the hemispherical shape is the same as the diameter of the limiting hole 12, ensuring that the limiting rod 8 and the limiting hole 12 can fit tightly together, enhancing the locking effect. See Figure 1 , Figure 2 , Figure 3 , Figure 4 The transmission rod 4 is fixedly connected to a control knob 18 at one end outside the sewing table 2. The control knob 18 increases the force application area for the operator, making it easier and more convenient to rotate the transmission rod 4. See Figure 2 The transmission rod 4 has four placement holes 9 on its side wall. Multiple limit rods 8 can be installed in the four placement holes 9 to improve the stability of the transmission rod 4. The adjacent placement holes 9 are at a 90° angle to ensure that the limit rods 8 are evenly distributed and that the transmission rod 4 is balanced when it rotates. See Figure 7 The sewing table 2 has a rotating groove 19 for the rotation of the limiting pin 5. The rotating groove 19 provides rotation space for the limiting pin 5 to avoid collision with the internal structure of the sewing table 2. The bottom of the rotating groove 19 and the bottom of the pin groove 13 are in the same plane to ensure that the limiting pin 5 can fully contact the bottom of the groove when it is inserted into the pin groove 13. The side wall of the limiting pin 5 fits against the groove wall of the pin groove 13 to ensure the limiting effect. See Figure 4 , Figure 5 , Figure 6 The combined feed hole and the combined discharge hole are connected to form a sewing channel 20. The sewing channel 20 provides a complete path for the nylon zipper to be conveyed within the limiting platform 3. The sewing channel 20 has a T-shaped structure, which can accommodate different parts of the zipper and is adapted to the shape characteristics of the zipper. The implementation principle of this embodiment is as follows: First, select the appropriate limiting platform 3 according to the specifications of the nylon zipper to be sewn. Then, the limiting block 15 slides into the slide groove 16 on the side wall of the mounting groove 14 of the sewing platform 2 to complete the initial positioning. Then, rotate the control knob 18 at the outer end of the transmission rod 4 to drive the transmission rod 4 to rotate in the rotation hole 10 of the sewing platform 2. At this time, the limiting rod 8 on the transmission rod 4 is retracted into the placement hole 9 under the action of the spring 7 and then pops out again to be inserted into the next limiting hole 12. When the limiting pin 5 at one end of the transmission rod 4 rotates into the pin groove 13 embedded in the side wall of the limiting platform 3, the limiting rod 8 is inserted into the corresponding limiting hole 12 to complete the locking. At this time, the limiting platform 3 is reliably fixed. If the limiting platform 3 needs to be replaced, rotate the control knob 18 in the opposite direction to make the limiting pin 5 disengage from the pin groove 13, and then pull out the limiting platform 3 along the slide groove 16. Repeat the above steps to install a new limiting platform 3 to achieve quick adaptation and sewing of zippers of different specifications.

[0026] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A sewing machine for nylon zippers, characterized in that: The machine includes a nylon zipper sewing machine (1) and a sewing table (2). The sewing table (2) has a detachable top end connected to a limiting platform (3) for restricting the position of the nylon zipper. The sewing table (2) has a locking device rotatably connected inside for fixing the limiting platform (3). The locking device includes a transmission rod (4), a limiting pin (5), a sleeve (6), a spring (7), and a limiting rod (8). The transmission rod (4) has multiple placement holes (9) evenly distributed on its side wall. The limiting rod (8) is slidably connected in the placement hole (9). The two ends of the spring (7) are respectively connected to the limiting rod (8) and the bottom end of the placement hole (9). The side wall of the suture table (2) is provided with a rotating hole (10) for rotating and connecting the transmission rod (4). The limiting pin (5) is fixedly connected to one end of the transmission rod (4). The other end of the transmission rod (4) is placed outside the suture table (2). The sleeve (6) is sleeved on the side wall of the transmission rod (4). The side wall of the sleeve (6) is provided with a through hole (11) for the limiting rod (8) to pass through. The inner wall of the rotating hole (10) is provided with a limiting hole (12) for cooperating with the limiting rod (8). The side wall of the limiting table (3) is provided with a pin groove (13) for cooperating with the limiting pin (5).

2. The sewing machine for nylon zippers according to claim 1, characterized in that: The sewing table (2) is provided with an installation groove (14) for installing the limiting table (3). A limiting block (15) is fixedly connected to the side wall of the limiting table (3). A sliding groove (16) for cooperating with the limiting block (15) is provided on the side wall of the installation groove (14).

3. The sewing machine for nylon zippers according to claim 1, characterized in that: The top of the limiting platform (3) is provided with a pinhole (17), a combined feeding hole is provided on one side of the limiting platform (3), and a combined discharging hole is provided on the side of the limiting platform (3) away from the combined feeding hole.

4. The sewing machine for nylon zippers according to claim 1, characterized in that: The end of the limiting rod (8) away from the spring (7) is a hemispherical shape. The diameter of the hemispherical shape is smaller than the cross-sectional diameter of the limiting rod (8). The side wall of the limiting rod (8) fits against the inner wall of the placement hole (9). The diameter of the hemispherical shape is the same as the diameter of the limiting hole (12).

5. The sewing machine for nylon zippers according to claim 1, characterized in that: The transmission rod (4) is fixedly connected to a control knob (18) at one end outside the sewing table (2).

6. The sewing machine for nylon zippers according to claim 1, characterized in that: The transmission rod (4) has four placement holes (9) on its side wall, and the adjacent placement holes (9) are at a 90° angle to each other.

7. The sewing machine for nylon zippers according to claim 1, characterized in that: The sewing table (2) is provided with a rotating groove (19) for rotating the limiting pin (5), and the bottom of the rotating groove (19) and the bottom of the pin groove (13) are in the same plane.

8. The sewing machine for nylon zippers according to claim 3, characterized in that: The combined feed hole and the combined discharge hole are connected to form a stitching channel (20), and the stitching channel (20) has a T-shaped structure.

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