Tension adjusting tool for sewing machine

Abstract

The utility model discloses a tension adjusting tool for a sewing machine, and belongs to the technical field of textile machinery equipment, the tension adjusting tool comprises a base, one side of the base is provided with a conveying mechanism, a driving mechanism and a lifting mechanism, the conveying mechanism comprises a rotating wheel, the rotating wheel is rotatably connected to the side wall of the base through the driving mechanism, and a cloth pressing wheel is arranged right above the rotating wheel; the cloth pressing wheel is rotationally connected to one side of the base through a lifting mechanism, the lifting mechanism comprises a supporting frame, the supporting frame is fixedly installed on the side wall of the base, and a stepping motor is fixedly installed in the supporting frame; uniform tension of cloth in the conveying process is guaranteed, sewing quality is improved, during use, only one worker is needed to pull one side of the cloth, the other side of the cloth is automatically pulled by the device, the cloth can automatically move, accordingly, the labor cost of cloth sewing is greatly reduced, and meanwhile the device is simple in structure, convenient to maintain and high in practicability. The operation cost of the equipment is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This application relates to the field of textile machinery and equipment technology, and in particular to a tension adjusting fixture for sewing machines. Background Technology

[0002] Currently, sewing machines are widely used in industrial production, especially in the garment manufacturing industry, where the efficiency and stability of sewing machines directly affect product quality and production efficiency.

[0003] Traditional sewing machines typically rely on manual pulling of the fabric when processing it. This method is not only labor-intensive, but also lacks precision in manual adjustment, which can easily lead to uneven fabric tension and affect the quality of the final product. Furthermore, the existing automated equipment systems introduced into sewing machines are complex and have high maintenance costs. These problems limit the efficient operation of sewing machines and the improvement of product quality.

[0004] Therefore, this application provides a tension adjusting fixture for sewing machines. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a tension adjustment fixture for sewing machines, which overcomes the deficiencies of existing technologies. It aims to solve the problem that traditional sewing machines typically rely on manual pulling of the fabric when processing it. This method is not only labor-intensive, but also lacks precision in manual adjustment, easily leading to uneven fabric tension and affecting the quality of the final product. Furthermore, existing automated equipment systems introduced into sewing machines are complex and have high maintenance costs. These problems limit the efficient operation of sewing machines and the improvement of product quality.

[0006] To achieve the above objectives, this application provides the following technical solution: a tension adjusting fixture for a sewing machine, comprising a base, a conveying mechanism, a driving mechanism, and a lifting mechanism disposed on one side of the base, the conveying mechanism comprising a rotating wheel, the rotating wheel being rotatably connected to the side wall of the base via the driving mechanism, a pressing roller disposed directly above the rotating wheel, the pressing roller being rotatably connected to one side of the base via the lifting mechanism, the lifting mechanism comprising a support frame, the support frame being fixedly installed on the side wall of the base, a stepper motor being fixedly installed inside the support frame, a screw being fixedly installed at the output end of the stepper motor, a rotating seat being fixedly installed at the bottom of the support frame, the bottom of the screw being rotatably connected to the rotating seat, a lifting frame being threadedly connected to the outer surface of the screw, a cylinder being fixedly installed on one side of the lifting frame, and the rotating wheel being interference-fitted to the outer surface of the cylinder.

[0007] By adopting the above technical solution, when the fabric needs to be tensioned and conveyed, the drive mechanism drives the rotating wheel to rotate, and at the same time, the stepper motor drives the screw to rotate. The lifting frame is connected to the screw through a thread to achieve lifting movement, causing the pressure roller to move in the direction of approaching or moving away from the rotating wheel until the pressure roller and the rotating wheel clamp the fabric. Once the fabric is clamped, the rotating wheel continues to rotate, driving the fabric forward and completing the automatic conveying of the fabric. By adopting a stepper motor-driven screw structure, the stroke range is 0-50mm, and the positioning accuracy is ±0.1mm. Precise tension adjustment ensures uniform tension of the fabric during the conveying process, improving sewing quality. During use, only one worker needs to hold one side of the fabric, and the other side of the fabric is automatically pulled by the device, allowing the fabric to move automatically, thereby greatly reducing the labor cost of sewing fabric. At the same time, the structure is simple, easy to maintain, reduces the operating cost of the equipment, and extends its service life.

[0008] As a preferred embodiment of this application, the drive mechanism includes a motor frame, which is fixedly mounted on the side wall of the base. A motor is fixedly mounted on the top of the motor frame. A first rotating shaft is fixedly mounted on the output end of the motor. A first pulley is fixedly mounted on the outer surface of the first rotating shaft. A second rotating shaft is rotatably connected to the side wall of the base directly above the first rotating shaft. A second pulley is fixedly mounted on the outer surface of the second rotating shaft. A belt is drivingly connected between the outer surfaces of the first pulley and the second pulley. The pressing roller is interference-fitted to the outer surface of the second rotating shaft.

[0009] By adopting the above technical solution, the first rotating shaft is driven by a motor to rotate, and the second rotating shaft is driven by a belt, which in turn drives the rotating wheel and the pressing wheel to rotate. The motor provides a stable power source to realize the continuous conveying of the fabric. At the same time, the transmission structure is simple and improves the convenience of maintenance.

[0010] As a preferred technical solution of this application, the number of conveying mechanisms is at least three sets, and several sets of conveying mechanisms are arranged alternately.

[0011] By adopting the above technical solution, a multi-point clamping structure is formed by multiple sets of staggered conveying mechanisms, which is suitable for tensioning and conveying long fabrics, thus improving the applicability of the device.

[0012] As a preferred embodiment of this application, a bearing is fixedly installed at the connection between the second rotating shaft and the base, the second rotating shaft is fixedly installed on the inner ring of the bearing, and the outer ring of the bearing is fixedly installed on the inner wall of the base.

[0013] By adopting the above technical solution, the friction of the second shaft when rotating in the base is reduced by the bearing, thereby improving the smoothness of the second shaft rotation, and improving the stability and accuracy of the second shaft rotation.

[0014] As a preferred technical solution of this application, threaded blocks are fixedly installed on the cylinder and the end of the second rotating shaft away from the base. A limit cover is threadedly connected to the outer surface of the threaded block. Limit rings are abutted on the side of the pressing wheel and the rotating wheel away from the threaded block. One set of limit rings is installed on the outer surface of the cylinder, and the other set of limit rings is installed on the outer surface of the second rotating shaft.

[0015] By adopting the above technical solution, the limit cover and the threaded block are connected by threads, which makes it easy to disassemble the limit cover, thereby facilitating the replacement of the pressing roller and the rotating roller. It is also beneficial to install pressing rollers and rotating rollers of different diameters according to the thickness of different fabrics.

[0016] As a preferred technical solution of this application, a rubber sleeve is fixedly installed on the outer surface of the pressing roller, and a pressure sensor is fixedly installed on the outer surface of the pressing roller at the middle of the rubber sleeve.

[0017] By adopting the above technical solution, the rubber sleeve, with its excellent elasticity, can effectively protect the fabric from damage, while the pressure sensor facilitates the monitoring of changes in fabric tension.

[0018] As a preferred technical solution of this application, a controller is fixedly installed on the top of the base. The controller is connected to the pressure sensor signal and electrically connected to several sets of stepper motors. A wireless communication device is fixedly installed on one side of the controller.

[0019] By adopting the above technical solution, after receiving data from the pressure sensor through the controller signal, the stepper motor is automatically controlled to adjust the height of the lifting frame, which further improves the accuracy and stability of the lifting mechanism. The external mobile device is connected to the controller through a wireless communication device, and the start and stop of the device and parameter settings are remotely controlled through a mobile APP or computer software, which makes it convenient for operators to monitor and manage multiple devices from a distance.

[0020] As a preferred technical solution of this application, the bottom of the base is fixedly installed with two sets of fixing feet, and the internal threads of the two sets of fixing feet are connected to threaded rods.

[0021] By adopting the above technical solution, this device is placed next to the sewing machine and connected to an external fixing mechanism through a threaded rod, thereby ensuring the stability of the base.

[0022] The beneficial effects of this application are:

[0023] 1. When fabric tensioning and conveying are required, the drive mechanism drives the rotating wheel to rotate, while the stepper motor drives the screw to rotate. The lifting frame is threadedly connected to the screw to achieve lifting movement, causing the pressure roller to move towards or away from the rotating wheel until the pressure roller and rotating wheel clamp the fabric. Once the fabric is clamped, the rotating wheel continues to rotate, driving the fabric forward, completing the automatic fabric conveying. By adopting a stepper motor-driven screw structure with a stroke range of 0-50mm and a positioning accuracy of ±0.1mm, precise tension adjustment ensures uniform tension of the fabric during conveying, improving sewing quality. During use, only one worker needs to hold one side of the fabric, and the other side is automatically pulled by the device, allowing the fabric to move automatically, thus greatly reducing the labor cost of fabric sewing. At the same time, the simple structure and convenient maintenance reduce the operating cost of the equipment and extend its service life.

[0024] 2. The first rotating shaft is driven by a motor to rotate, and the second rotating shaft is driven by a belt, which in turn drives the rotating wheel and the pressing wheel to rotate. The motor provides a stable power source to realize the continuous conveying of the fabric. At the same time, the transmission structure is simple and improves the convenience of maintenance. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this application;

[0026] Figure 2 This is a schematic diagram of the drive mechanism structure;

[0027] Figure 3 This is a schematic diagram of the lifting mechanism.

[0028] Figure 4 A schematic diagram of the rotating wheel replacement structure.

[0029] In the diagram: 1. Base; 2. Conveying mechanism; 201. Rotary wheel; 202. Pressing roller; 3. Drive mechanism; 301. Motor frame; 302. Motor; 303. First rotating shaft; 304. First pulley; 305. Second rotating shaft; 306. Second pulley; 307. Belt; 4. Lifting mechanism; 401. Support frame; 402. Stepper motor; 403. Screw; 404. Rotating seat; 405. Lifting frame; 406. Cylinder; 5. Bearing; 6. Threaded block; 7. Limiting cover; 8. Limiting ring; 9. Rubber sleeve; 10. Pressure sensor; 11. Controller; 12. Wireless communication device; 14. Fixed foot; 15. Threaded rod. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Reference Figure 1-4 A tension adjusting fixture for a sewing machine includes a base 1. A conveying mechanism 2, a driving mechanism 3, and a lifting mechanism 4 are arranged on one side of the base 1. The conveying mechanism 2 includes a rotating wheel 201, which is rotatably connected to the side wall of the base 1 via the driving mechanism 3. A pressure roller 202 is arranged directly above the rotating wheel 201, and the pressure roller 202 is rotatably connected to one side of the base 1 via the lifting mechanism 4. The lifting mechanism 4 includes a support frame 401, which is fixedly installed on the side wall of the base 1. A stepper motor 402 is fixedly installed inside the support frame 401. A screw 403 is fixedly installed at the output end of the stepper motor 402. A rotating seat 404 is fixedly installed at the bottom of the support frame 401. The bottom of the screw 403 is rotatably connected to the rotating seat 404. A lifting frame 405 is threadedly connected to the outer surface of the screw 403. A cylinder 406 is fixedly installed on one side of the lifting frame 405. A rotating wheel 201 is interference-fitted to the outer surface of the cylinder 406. The number of conveying mechanisms 2 is at least three sets, and several sets of conveying mechanisms 2 are staggered.

[0032] When fabric tensioning and conveying are required, the drive mechanism 3 drives the rotating wheel 201 to rotate. Simultaneously, the stepper motor 402 drives the screw 403 to rotate. The lifting frame 405 is threadedly connected to the screw 403 to achieve lifting movement, causing the pressure roller 202 to move closer to or further away from the rotating wheel 201 until the pressure roller 202 and rotating wheel 201 clamp the fabric. Once the fabric is clamped, the rotating wheel 201 continues to rotate, moving the fabric forward and completing the automatic fabric conveying. By using a stepper motor 402 to drive the screw 403, the stroke range is 0-5. With a positioning accuracy of ±0.1mm, precise tension adjustment ensures uniform tension of the fabric during transport, improving sewing quality. During use, only one worker needs to hold one side of the fabric, while the other side is automatically pulled by the device, allowing the fabric to move automatically and significantly reducing labor costs for sewing. Furthermore, the simple structure and easy maintenance reduce operating costs and extend the device's lifespan. Multiple sets of staggered conveyor mechanisms form a multi-point clamping structure, suitable for tensioning and transporting long fabrics, thus expanding the device's applicability.

[0033] Reference Figure 1-3The drive mechanism 3 includes a motor frame 301, which is fixedly installed on the side wall of the base 1. A motor 302 is fixedly installed on the top of the motor frame 301. A first rotating shaft 303 is fixedly installed at the output end of the motor 302. A first pulley 304 is fixedly installed on the outer surface of the first rotating shaft 303. A second rotating shaft 305 is rotatably connected to the side wall of the base 1 directly above the first rotating shaft 303. A second pulley 306 is fixedly installed on the outer surface of the second rotating shaft 305. A belt 307 is drivingly connected between the outer surfaces of the first pulley 304 and the second pulley 306. A pressing roller 202 is interference-fitted to the outer surface of the second rotating shaft 305. A bearing 5 is fixedly installed at the connection between the second rotating shaft 305 and the base 1. The second rotating shaft 305 is fixedly installed on the inner ring of the bearing 5, and the outer ring of the bearing 5 is fixedly installed on the inner wall of the base 1.

[0034] The first rotating shaft 303 is driven to rotate by the motor 302, and the rotation is transmitted to the second rotating shaft 305 via the belt 307. This, in turn, drives the rotating wheel 201 and the pressing wheel 202 to rotate. The motor 302 provides a stable power source to realize the continuous conveying of the fabric. At the same time, the transmission structure is simple and improves the convenience of maintenance. The bearing 5 reduces the friction of the second rotating shaft 305 when it rotates in the base 1, which improves the smoothness of the rotation of the second rotating shaft 305, and enhances the stability and accuracy of the rotation of the second rotating shaft 305.

[0035] Reference Figure 2-4 A threaded block 6 is fixedly installed on the end of the cylinder 406 and the second rotating shaft 305 away from the base 1. A limit cover 7 is threadedly connected to the outer surface of the threaded block 6. A limit ring 8 is abutted on the side of the pressing wheel 202 and the rotating wheel 201 away from the threaded block 6. One set of limit rings 8 is installed on the outer surface of the cylinder 406, and the other set of limit rings 8 is installed on the outer surface of the second rotating shaft 305. A controller 11 is fixedly installed on the top of the base 1. The controller 11 is signal-connected to the pressure sensor 10, and the controller 11 is electrically connected to several sets of stepper motors 402. A wireless communication device 12 is fixedly installed on one side of the controller 11. The limit cover 7 and the threaded block 6 are threadedly connected to the outer surface of the cylinder 406. The threaded connection of the pattern block 6 facilitates the disassembly of the limit cover 7, thereby making it easy to replace the pressing roller 202 and the rotating roller 201. This allows for the installation of pressing rollers 202 and rotating rollers 201 of different diameters according to the thickness of different fabrics. After receiving data from the pressure sensor 10 via the signal from the controller 11, the stepper motor 402 is automatically controlled to adjust the height of the lifting frame 405, further improving the accuracy and stability of the lifting mechanism 4. The external mobile device is connected to the controller 11 via the wireless communication device 12, allowing remote control of the device's start / stop and parameter settings via a mobile APP or computer software. This facilitates remote monitoring and management of multiple devices by operators.

[0036] Reference Figure 1-3A rubber sleeve 9 is fixedly installed on the outer surface of the pressure roller 202, and a pressure sensor 10 is fixedly installed on the outer surface of the pressure roller 202 at the middle of the rubber sleeve 9. Two sets of fixing feet 14 are fixedly installed at the bottom of the base 1, and threaded rods 15 are connected to the internal threads of the two sets of fixing feet 14. The rubber sleeve 9 has good elasticity, which can effectively protect the fabric from damage. The pressure sensor 10 is useful for monitoring changes in fabric tension. The device is placed next to the sewing machine and connected to the external fixing mechanism through the threaded rods 15 to ensure the stability of the base 1.

[0037] Working principle: When fabric tensioning and conveying are required, the drive mechanism 3 drives the rotating wheel 201 to rotate. Simultaneously, the stepper motor 402 drives the screw 403 to rotate. The lifting frame 405 is threadedly connected to the screw 403 to achieve lifting movement, causing the pressure roller 202 to move closer to or further away from the rotating wheel 201 until the pressure roller 202 and rotating wheel 201 clamp the fabric. Once the fabric is clamped, the rotating wheel 201 continues to rotate, driving the fabric forward, completing the automatic fabric conveying. By using a stepper motor 402 to drive the screw 403, the stroke range is 0-50mm, and the positioning accuracy is ±0.1mm, ensuring precise tension adjustment and guaranteeing... The fabric maintains uniform tension during transport, improving sewing quality. Only one worker needs to hold one side of the fabric, while the other side is automatically pulled by the device, allowing the fabric to move automatically and significantly reducing labor costs for sewing. Furthermore, the simple structure and easy maintenance reduce operating costs and extend the equipment's lifespan. The first rotating shaft 303 is driven by motor 302, and the rotation is transmitted to the second rotating shaft 305 via belt 307, which in turn drives the rotating wheel 201 and the pressure roller 202. The motor 302 provides a stable power source, enabling continuous fabric transport. The simple transmission structure also improves ease of maintenance.

[0038] Among them, the multi-point clamping structure is formed by multiple sets of staggered conveying mechanisms 2, which is suitable for tensioning and conveying long fabrics, thus improving the applicability of the device. The bearing 5 reduces the friction of the second rotating shaft 305 when it rotates in the base 1, thereby improving the smoothness of the second rotating shaft 305 during rotation and enhancing the stability and accuracy of the second rotating shaft 305 during rotation.

[0039] Meanwhile, the threaded connection between the limiting cover 7 and the threaded block 6 facilitates the disassembly of the limiting cover 7, thereby facilitating the replacement of the pressing roller 202 and the rotating roller 201. This allows for the installation of pressing rollers 202 and rotating rollers 201 of different diameters according to the thickness of different fabrics. The rubber sleeve 9 has good elasticity, which can effectively protect the fabric from damage. The pressure sensor 10 is helpful for monitoring changes in fabric tension.

[0040] In addition, after receiving data from the pressure sensor 10 via the controller 11 signal, the stepper motor 402 is automatically controlled to adjust the height of the lifting frame 405, further improving the accuracy and stability of the lifting mechanism 4. The external mobile device is connected to the controller 11 via the wireless communication device 12, and the start / stop and parameter settings of this device are remotely controlled via a mobile APP or computer software, making it convenient for operators to monitor and manage multiple devices remotely. This device is placed next to the sewing machine and connected to the external fixing mechanism via the threaded rod 15, thereby ensuring the stability of the base 1.

[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A tension adjusting fixture for a sewing machine, comprising a base (1), characterized in that, A conveying mechanism (2), a driving mechanism (3), and a lifting mechanism (4) are provided on one side of the base (1). The conveying mechanism (2) includes a rotating wheel (201), which is rotatably connected to the side wall of the base (1) through the driving mechanism (3). A pressing wheel (202) is provided directly above the rotating wheel (201), which is rotatably connected to one side of the base (1) through the lifting mechanism (4). The lifting mechanism (4) includes a support frame (401), which is fixedly installed on the side of the base (1). The support frame (401) is fixedly installed with a stepper motor (402) inside. The output end of the stepper motor (402) is fixedly installed with a screw (403). The bottom of the support frame (401) is fixedly installed with a rotating seat (404). The bottom of the screw (403) is rotatably connected to the rotating seat (404). The outer surface of the screw (403) is threadedly connected with a lifting frame (405). A cylinder (406) is fixedly installed on one side of the lifting frame (405). The rotating wheel (201) is interference-fitted to the outer surface of the cylinder (406).

2. The tension adjusting fixture for a sewing machine according to claim 1, characterized in that, The drive mechanism (3) includes a motor frame (301), which is fixedly installed on the side wall of the base (1). A motor (302) is fixedly installed on the top of the motor frame (301). A first rotating shaft (303) is fixedly installed at the output end of the motor (302). A first pulley (304) is fixedly installed on the outer surface of the first rotating shaft (303). A second rotating shaft (305) is rotatably connected to the side wall of the base (1) directly above the first rotating shaft (303). A second pulley (306) is fixedly installed on the outer surface of the second rotating shaft (305). A belt (307) is drivingly connected between the outer surfaces of the first pulley (304) and the second pulley (306). The pressing wheel (202) is interference-fitted to the outer surface of the second rotating shaft (305).

3. The tension adjusting fixture for a sewing machine according to claim 1, characterized in that, The number of conveying mechanisms (2) is at least three sets, and several sets of conveying mechanisms (2) are arranged alternately.

4. A tension adjusting fixture for a sewing machine according to claim 2, characterized in that, A bearing (5) is fixedly installed at the connection between the second rotating shaft (305) and the base (1). The second rotating shaft (305) is fixedly installed on the inner ring of the bearing (5), and the outer ring of the bearing (5) is fixedly installed on the inner wall of the base (1).

5. A tension adjusting fixture for a sewing machine according to claim 2, characterized in that, Both the cylinder (406) and the second rotating shaft (305) are fixedly installed with threaded blocks (6) at the ends away from the base (1). The outer surface of the threaded block (6) is threadedly connected to a limit cover (7). The side of the pressing wheel (202) and the rotating wheel (201) away from the threaded block (6) is abutted by a limit ring (8). One set of the limit rings (8) is installed on the outer surface of the cylinder (406), and the other set of the limit rings (8) is installed on the outer surface of the second rotating shaft (305).

6. A tension adjusting fixture for a sewing machine according to claim 1, characterized in that, A rubber sleeve (9) is fixedly installed on the outer surface of the pressing roller (202), and a pressure sensor (10) is fixedly installed on the outer surface of the pressing roller (202) at the middle of the rubber sleeve (9).

7. A tension adjusting fixture for a sewing machine according to claim 6, characterized in that, A controller (11) is fixedly installed on the top of the base (1). The controller (11) is connected to the pressure sensor (10) and electrically connected to several sets of stepper motors (402). A wireless communication device (12) is fixedly installed on one side of the controller (11).

8. A tension adjusting fixture for a sewing machine according to claim 1, characterized in that, The base (1) has two sets of fixed feet (14) fixedly installed at its bottom, and the two sets of fixed feet (14) are internally threaded with threaded rods (15).

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