Sewing machine stitch adjusting device
By integrating a stitch controller and thickness measuring device into the sewing machine, precise adjustment of the thread clamp and adaptive stitch adjustment are achieved, solving the problems of accuracy and adaptability of traditional sewing machine stitch adjustment, and improving the ease of operation and sewing quality of the sewing machine.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAOXING MOLA HOME TEXTILE CO LTD
- Filing Date
- 2025-01-10
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional sewing machine stitch adjustment relies on manual operation or simple mechanical structure, which has a limited adjustment range and low precision, making it difficult to ensure the uniformity and aesthetics of the stitches. Especially when dealing with fabrics of uneven thickness and high elasticity, the stitches are prone to being too tight or too loose, and it is impossible to monitor changes in fabric thickness in real time.
The stitch controller employs a rotating device that drives a motor to precisely adjust the grooved wheel and the thread clamp. Combined with a thickness measuring device that monitors the fabric thickness in real time and provides feedback data, the tension and position of the thread clamp are automatically adjusted to achieve adaptive stitch adjustment.
It improves the flexibility and precision of stitch adjustment, ensures the uniformity and aesthetics of sewing stitches, reduces operational difficulty and maintenance costs, and improves sewing efficiency and quality stability.
Smart Images
Figure CN224119254U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sewing equipment technology, specifically a sewing machine stitch adjustment device. Background Technology
[0002] In the sewing machine industry, the evenness and aesthetics of stitches are crucial indicators of sewing quality. Traditional sewing machine stitch adjustment relies primarily on manual operation or simple mechanical structures. This approach has several limitations. Manual stitch adjustment requires operators with extensive experience and skill to accurately adjust the stitches based on fabric characteristics and sewing needs. However, even experienced operators cannot guarantee optimal results every time, as manual adjustment is often affected by human factors such as force and angle, making precise control difficult. Traditional mechanical stitch adjustment structures are relatively simple, with limited adjustment range and low precision. With the continuous development of sewing machine technology and the increasing variety of fabrics, the requirements for stitch adjustment are also getting higher and higher. Traditional mechanical adjustment methods are no longer able to meet the needs of modern sewing machines, especially when dealing with fabrics of uneven thickness and high elasticity. It is even more difficult to ensure the uniformity and aesthetics of the stitches. Traditional sewing machines often cannot monitor the changes in fabric thickness in real time during the sewing process, so they cannot automatically adjust the tension and position of the stitches according to the changes in fabric thickness. This leads to the possibility that the stitches are too tight or too loose when sewing fabrics of uneven thickness, affecting the sewing quality. In order to solve the above problems, we have proposed a sewing machine stitch adjustment device. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides a sewing machine stitch adjustment device, which solves the aforementioned problems.
[0004] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a sewing machine stitch adjustment device, comprising a sewing machine and a mounting table, wherein the top of the mounting table is hollowed out and the sewing machine is fixedly mounted thereon, a stitch controller is provided on one side of the sewing machine, a control computer is fixedly mounted on the side of the stitch controller away from the sewing machine, a processing plate is fixedly mounted on the top of the mounting table near the sewing machine, a leveling roller is provided on the top of the mounting table near the processing plate, a rotating device is provided inside the stitch controller, and multiple sets of thread clamps are fixedly mounted on the side of the sewing machine near the stitch controller, with multiple sets of circular grooves formed on the multiple sets of thread clamps, and further comprising:
[0005] The rotating device, driven by a motor, rotates the grooved wheel, allowing the thread clamp to make fine adjustments to the stitches, meeting different sewing needs and ensuring the uniformity and aesthetics of the sewing stitches.
[0006] Preferably, a set of thickness measuring instruments is provided at each end of the leveling roller, and both sets of thickness measuring instruments are fixedly installed on the top of the mounting platform.
[0007] Preferably, a set of spring bases is fixedly installed inside each of the two sets of thickness measuring instruments, and a set of springs is fixedly installed inside each of the two sets of spring bases. A set of pressure sensors is fixedly installed at the top of each of the spring bases.
[0008] Preferably, the two ends of the leveling roller are rotatably mounted on the side of the spring base away from the pressure sensor.
[0009] Preferably, the bottom end of the stitch controller is fixedly installed on the side of the sewing machine near the bottom end, and the top end of the stitch controller is inclined towards the side of the multiple sets of thread clamps. The stitch controller is provided with the same number of rotating devices as the multiple sets of thread clamps inside.
[0010] Preferably, the rotating device includes a motor, a disc, a pin, and an arc-shaped plate. The motor is fixedly installed inside the top of the thread controller. The output shaft of the motor faces one side of the wire clamp and is fixedly installed with a disc. A pin is fixedly installed on the side of the disc away from the motor, and an arc-shaped plate is fixedly installed on the side of the disc away from the pin.
[0011] Preferably, an installation rod is fixedly installed inside the top of the thread controller on the side near the motor. A set of grooved wheels is rotatably installed on the side of the installation rod near the disc. The grooved wheels have arc-shaped grooves corresponding to the bow-shaped plate and straight grooves corresponding to the diameter of the round pin. Multiple sets of levers are fixedly installed on the side of the installation rod facing away from the thread controller, and all sets of levers engage with the circular grooves opened in the thread clamp.
[0012] Compared with the prior art, the present invention provides a sewing machine stitch adjustment device, which has the following beneficial effects:
[0013] 1. This sewing machine stitch adjustment device addresses the limitations of traditional sewing machine stitch adjustment, which often relies on manual operation or simple mechanical structures, resulting in limited adjustment range and low precision. This device, however, utilizes a rotating mechanism within the stitch controller 5 to achieve precise adjustment of the thread clamp. A motor drives a disc, pin, and bow-shaped plate to move precisely, and this movement is transmitted to the thread clamp via a grooved wheel and lever, resulting in more delicate and accurate stitch adjustment. This design significantly improves the flexibility and precision of stitch adjustment, meeting diverse sewing needs and fabric characteristics, and ensuring the uniformity and aesthetics of the sewing stitches.
[0014] 2. This sewing machine stitch adjustment device addresses the common problem that traditional sewing machines often require manual adjustment of stitch tension and pressure when sewing fabrics of different thicknesses. This is cumbersome and difficult to guarantee accuracy. This device, however, incorporates thickness measuring devices at both ends of the leveling roller, enabling real-time monitoring of the fabric thickness passing through the roller and feeding the data back to the stitch controller. The stitch controller can then automatically adjust the tension and position of the thread clamp based on changes in fabric thickness, achieving adaptive stitch adjustment. This design not only improves sewing efficiency but also ensures stable sewing quality.
[0015] 3. The stitch adjustment device of this sewing machine is a significant improvement over traditional sewing machine stitch adjustment devices, which are often complex in structure and have many parts, making maintenance inconvenient. This device, through optimized design, integrates the stitch controller, rotating device, thickness measuring device, and other components into one unit, making the device structure more compact and reasonable. At the same time, the top of the stitch controller is tilted towards the side of the thread clamp, making it easier for the operator to adjust and observe the stitch. In addition, the components in the device, such as the spring base, spring, and pressure sensor, are all modularly designed, making them easy to replace and maintain, thus reducing the cost of use and the difficulty of maintenance. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the main view structure of the three-dimensional characters of this utility model;
[0017] Figure 2 This is a partial schematic diagram of the wire clamp of this utility model;
[0018] Figure 3 This is a schematic diagram of the thickness measuring device of this utility model;
[0019] Figure 4 This is a schematic diagram of the rotating device of this utility model.
[0020] In the diagram: 1. Sewing machine; 2. Mounting table; 3. Processing plate; 4. Control computer; 5. Stitch controller; 6. Leveling roller; 7. Thickness measuring device; 8. Rotating device; 9. Thread clamp; 10. Spring; 11. Spring base; 12. Pressure sensor; 13. Motor; 14. Disc; 15. Pin; 16. Bow plate; 17. Mounting rod; 18. Grooved wheel; 19. Lever. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please see Figure 1-4 A sewing machine stitch adjustment device includes a sewing machine 1 and a mounting table 2. The top of the mounting table 2 is hollowed out and the sewing machine 1 is fixedly mounted thereon. A stitch controller 5 is provided on one side of the sewing machine 1. A control computer 4 is fixedly mounted on the side of the stitch controller 5 away from the sewing machine 1. A processing plate 3 is fixedly mounted on the top of the mounting table 2 near the sewing machine 1. A leveling roller 6 is provided on the top of the mounting table 2 near the processing plate 3. A rotating device 8 is provided inside the stitch controller 5. Multiple sets of thread clamps 9 are fixedly mounted on the side of the sewing machine 1 near the stitch controller 5, and multiple sets of circular grooves are formed on the multiple sets of thread clamps 9. The device also includes:
[0023] The rotating device 8 drives the grooved wheel 18 to rotate via the motor 13, enabling the thread clamp 9 to make fine stitch adjustments to meet different sewing needs and ensure the uniformity and aesthetics of the sewing stitches.
[0024] Furthermore, a set of thickness measuring devices 7 are respectively set at both ends of the leveling roller 6, and both sets of thickness measuring devices 7 are fixedly installed on the top of the mounting platform 2. By setting a set of thickness measuring devices 7 at both ends of the leveling roller 6 and fixing them on the top of the mounting platform 2, the thickness of the fabric passing through the leveling roller 6 can be monitored in real time, providing accurate thickness data support for subsequent stitch adjustment and ensuring the uniformity and aesthetics of the stitches.
[0025] Furthermore, each of the two sets of thickness measuring devices 7 has a set of spring bases 11 fixedly installed inside, and each of the two sets of spring bases 11 has a set of springs 10 fixedly installed inside. Each set of spring bases 11 has a set of pressure sensors 12 fixedly installed at the top. The fact that both sets of thickness measuring devices 7 have spring bases 11, springs 10, and pressure sensors 12 fixedly installed inside gives the thickness measuring devices 7 a certain degree of elasticity and adaptability when measuring the thickness of fabrics, enabling accurate measurement of fabrics of different thicknesses. At the same time, the pressure sensors 12 can provide real-time feedback on pressure changes, further improving measurement accuracy.
[0026] Furthermore, the two ends of the leveling roller 6 are respectively rotatably mounted on the side of the spring base 11 away from the pressure sensor 12. This allows the leveling roller 6 to rotate flexibly when the fabric passes through, effectively reducing the frictional resistance between the fabric and the leveling roller 6, and improving the flatness and throughput of the fabric.
[0027] Furthermore, the bottom end of the stitch controller 5 is fixedly installed on the side of the sewing machine 1 near the bottom end, and the top end of the stitch controller 5 is tilted towards the side of the multiple sets of thread clamps 9. The stitch controller 5 has the same number of rotating devices 8 as the multiple sets of thread clamps 9 inside. This design makes the connection between the stitch controller 5, the sewing machine 1, and the thread clamps 9 more compact and reasonable, which facilitates the precise control and adjustment of the stitch. At the same time, the stitch controller 5 has the same number of rotating devices 8 as the multiple sets of thread clamps 9 inside, which ensures that each set of thread clamps 9 can independently and accurately adjust the stitch.
[0028] Furthermore, the rotating device 8 includes a motor 13, a disc 14, a pin 15, and an arc-shaped plate 16. The motor 13 is fixedly installed inside the top of the stitch controller 5. The output shaft of the motor 13 faces the side of the stitch clamp 9 and is fixedly installed on it. The pin 15 is fixedly installed on the side of the disc 14 away from the motor 13, and the arc-shaped plate 16 is fixedly installed on the side of the disc 14 away from the pin 15. The rotating device 8 includes a motor 13, a disc 14, a pin 15, and an arc-shaped plate 16. This structural design allows the rotating device 8 to drive the disc 14, the pin 15, and the arc-shaped plate 16 to move precisely through the drive of the motor 13, thereby achieving precise adjustment of the stitch clamp 9 to meet the needs of different stitches.
[0029] Furthermore, a mounting rod 17 is fixedly installed inside the top of the stitch controller 5 near the motor 13. A set of grooved wheels 18 are rotatably mounted on the mounting rod 17 near the disc 14. The grooved wheels 18 have arc-shaped grooves corresponding to the bow-shaped plate 16 and straight grooves corresponding to the diameter of the round pin 15 around their perimeter. Multiple sets of levers 19 are fixedly installed on the side of the mounting rod 17 facing away from the stitch controller 5, and all sets of levers 19 engage with the circular grooves in the wire clamp 9. The mounting rod 17 is fixedly installed inside the top of the stitch controller 5 near the motor 13, and the grooved wheels 18 are rotatably mounted on the mounting rod 17. The grooved wheels 18 have arc-shaped grooves corresponding to the bow-shaped plate 16 and straight grooves corresponding to the diameter of the round pin 15 around their perimeter. This design allows the bow-shaped plate 16 and the round pin 15 to make precise movement conversions under the drive of the grooved wheels 18, further improving the accuracy and stability of stitch adjustment.
[0030] Structural Description: 1. Sewing Machine 1: The main equipment for sewing work. It is fixedly installed at the top of the mounting platform 2. The principle is to sew the fabric through mechanical structure.
[0031] 2. Mounting Platform 2: Provides a platform for equipment installation and operation. Its position is as the bottom support structure of the entire equipment. The principle is to provide a stable foundation to support the installation and operation of other components.
[0032] 3. Processing plate 3: Used to place and support the fabric to be processed. It is fixedly installed on the top of the mounting table 2 near the sewing machine 1. The principle is to provide a flat working surface to facilitate the processing of the fabric.
[0033] 4. Control computer 4: Used to control and adjust the operating parameters of the sewing machine. It is fixedly installed on the side of the thread controller 5 facing away from the sewing machine 1. The principle is to realize the digital control of the sewing machine through software program.
[0034] 5. Stitch Controller 5: Used to control and adjust the stitch of the sewing thread. It is positioned on one side of the sewing machine 1, with its bottom end fixed on the side of the sewing machine 1 near the bottom end, and its top end tilted towards the side of the multiple thread clamps 9. The principle is to achieve precise adjustment of the thread clamps through the internal rotating device 8.
[0035] 6. Smoothing roller 6: Used to smooth the fabric and reduce wrinkles. It is positioned on the top of the mounting platform 2, close to the processing plate 3. The principle is to make the fabric smooth by rotating the roller.
[0036] 7. Thickness measuring device 7: Used to monitor the thickness of the fabric passing through the leveling roller 6 in real time. The positional relationship is that it is set at both ends of the leveling roller 6 and fixedly installed on the top of the mounting platform 2. The principle is to achieve accurate measurement of the fabric thickness through the internal spring and pressure sensor.
[0037] 8. Rotating device 8: used to drive the wire clamp 9 to make fine stitch adjustments. It is located inside the stitch controller 5. The principle is that the motor 13 drives the grooved wheel 18 to rotate, and then the adjustment of the wire clamp is achieved through the round pin 15 and the bow plate 16.
[0038] 9. Thread clamp 9: Used to clamp and adjust the sewing thread. It is fixedly installed on the side of the sewing machine 1 near the stitch controller 5. The principle is that the internal circular groove engages with the lever 19 to clamp and adjust the thread.
[0039] 10. Spring 10: Provides elasticity and adaptability for the thickness measuring device 7. It is fixedly installed inside the spring base 11. The principle is to measure fabrics of different thicknesses by compressing and extending the spring.
[0040] 11. Spring base 11: Supports and fixes the spring 10. It is fixedly installed inside the thickness measuring instrument 7. Its principle is to provide a stable support point to support the operation of the spring.
[0041] 12. Pressure sensor 12: Real-time monitoring of pressure changes in the thickness measuring device 7. It is fixedly installed at the top inside the spring base 11. The principle is to transmit the signal to the control system by sensing pressure changes in order to achieve accurate thickness measurement.
[0042] 13. Motor 13: The main power source for driving the rotating device 8. It is fixedly installed inside the top of the track controller 5. The principle is to drive the disc 14 to rotate through the rotation of the output shaft.
[0043] 14. Disc 14: Transmits the rotational power of motor 13. It is fixedly mounted on the output shaft of motor 13. Its principle is to drive the circular pin 15 and the bow-shaped plate 16 to move through its own rotation.
[0044] 15. Circular pin 15: It is matched with the straight slot of the grooved wheel 18. The positional relationship is that it is fixedly installed on the side of the disc 14 away from the motor 13. The principle is to drive the grooved wheel 18 to rotate by moving in the straight slot of the grooved wheel 18.
[0045] 16. Bow-shaped plate 16: It cooperates with the arc-shaped groove of the grooved wheel 18. Its positional relationship is that it is fixedly installed on the side of the disc 14 away from the round pin 15. The principle is to assist in driving the grooved wheel 18 to rotate by moving in the arc-shaped groove of the grooved wheel 18.
[0046] 17. Mounting rod 17: Supports and fixes the grooved wheel 18. It is fixedly installed inside the top of the track controller 5 on the side close to the motor 13. The principle is to provide a stable support point to support the rotation of the grooved wheel 18.
[0047] 18. Grooved wheel 18: realizes the motion conversion of the rotating device 8. The positional relationship is that it is rotatably installed on the side of the mounting rod 17 near the disc 14. The principle is that the internal arc groove and straight slot cooperate with the bow plate 16 and the round pin 15 to convert the rotational motion of the motor into the precise rotation of the grooved wheel.
[0048] 19. Lever 19: Engages with the circular groove in the wire clamp 9. It is fixedly installed on the side of the mounting rod 17 opposite to the line controller 5. The principle is to achieve precise adjustment of the wire clamp by engaging with it.
[0049] Instructions for use
[0050] Sewing machine 1, as the core component of the device, is responsible for performing sewing operations. During the sewing process, the needle of sewing machine 1 moves back and forth under the drive of the motor, interlacing the top and bottom threads to form a sewing stitch. When the stitch needs to be adjusted, the control computer 4 sends a control signal to the stitch controller 5 according to the preset sewing program or the operator's instructions. After receiving the control signal, the stitch controller 5 drives the internal rotating device 8 to start working. The rotating device 8 consists of a motor 13, a disc 14, a pin 15, and an arc-shaped plate 16. After the motor 13 starts, it drives the disc 14 to rotate, and the pin 15 on the disc 14 moves in a circular motion accordingly. During its circular motion, the pin 15 interacts with the arc-shaped groove and straight slot on the grooved wheel 18, pushing the bow-shaped plate 16 to move precisely. The movement of the bow-shaped plate 16 is transmitted to the thread clamp 9 via the lever 19, allowing the thread clamp 9 to make fine adjustments according to a predetermined trajectory, thereby achieving precise adjustment of the stitch. As the fabric passes through the leveling roller 6, the leveling roller 6 not only flattens the fabric but also monitors the fabric thickness in real time through thickness measuring devices 7 at both ends. The spring base 11 and spring 10 inside the thickness measuring device 7 give the measuring device a certain degree of elasticity and adaptability, enabling adjustment according to fabrics of different thicknesses. As the fabric passes through, the spring is compressed. The pressure sensor 12 senses and measures the pressure change in real time and feeds the data back to the control computer 4. The control computer 4 adjusts the working parameters of the stitch controller 5, such as the speed and angle of the rotating device 8, based on the received thickness data to ensure that the thread clamp 9 can make precise stitch adjustments according to the fabric thickness. The processing plate 3 is set on one side of the sewing machine 1 to place the fabric to be sewn or other processing materials for easy operation. The leveling roller 6 not only flattens the fabric as it passes through, but also monitors the fabric thickness in real time through the thickness measuring devices 7 at both ends, thus ensuring accurate stitch adjustment. The adjustment provides data support. Based on the instructions of the control computer 4 and the feedback data from the thickness measuring device 7, the stitch controller 5 precisely adjusts the working state of the thread clamp 9 to ensure the uniformity and aesthetics of the sewing stitches. Through the intelligent control of the control computer 4, the entire device realizes an automated and precise stitch adjustment process. The operator only needs to set the sewing program or input relevant parameters, and the device can automatically complete the stitch adjustment and sewing operation. This automated and precise control method not only improves sewing efficiency and quality, but also reduces the labor intensity and technical requirements of the operator, making sewing machine stitch adjustment simpler, faster, and more reliable.
[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A sewing machine stitch adjustment device, comprising a sewing machine (1) and a mounting table (2), wherein the top of the mounting table (2) is hollowed out and the sewing machine (1) is fixedly mounted thereon, a stitch controller (5) is provided on one side of the sewing machine (1), a control computer (4) is fixedly mounted on the side of the stitch controller (5) away from the sewing machine (1), a processing plate (3) is fixedly mounted on the top of the mounting table (2) near the sewing machine (1), a leveling roller (6) is provided on the top of the mounting table (2) near the processing plate (3), a rotating device (8) is provided inside the stitch controller (5), and multiple sets of thread clamps (9) are fixedly mounted on the side of the sewing machine (1) near the stitch controller (5), and multiple sets of circular grooves are provided on the multiple sets of thread clamps (9), characterized in that, Also includes: The rotating device (8) drives the grooved wheel (18) to rotate through the motor (13), so that the thread clamp (9) can make fine stitch adjustments to meet different sewing needs and ensure the uniformity and aesthetics of the sewing stitches.
2. The sewing machine stitch adjustment device according to claim 1, characterized in that: The leveling roller (6) is provided with a set of thickness measuring instruments (7) at both ends, and both sets of thickness measuring instruments (7) are fixedly installed on the top of the mounting platform (2).
3. A sewing machine stitch adjustment device according to claim 2, characterized in that: Both sets of thickness measuring instruments (7) have a set of spring bases (11) fixedly installed inside, and both sets of spring bases (11) have a set of springs (10) fixedly installed inside. The top of each spring base (11) has a set of pressure sensors (12) fixedly installed inside.
4. A sewing machine stitch adjustment device according to claim 1, characterized in that: The two ends of the leveling roller (6) are respectively rotatably mounted on the side of the spring base (11) away from the pressure sensor (12).
5. A sewing machine stitch adjustment device according to claim 1, characterized in that: The bottom end of the stitch controller (5) is fixedly installed on the side of the sewing machine (1) near the bottom end, and the top end of the stitch controller (5) is tilted towards the side of the multiple sets of thread clamps (9). The stitch controller (5) is provided with the same number of rotating devices (8) as the multiple sets of thread clamps (9).
6. A sewing machine stitch adjustment device according to claim 5, characterized in that: The rotating device (8) includes a motor (13), a disc (14), a pin (15), and an arc plate (16). The motor (13) is fixedly installed inside the top of the thread controller (5). The output shaft of the motor (13) faces the side of the wire clamp (9) and is fixedly installed with the disc (14). The pin (15) is fixedly installed on the side of the disc (14) away from the motor (13), and the arc plate (16) is fixedly installed on the side of the disc (14) away from the pin (15).
7. A sewing machine stitch adjustment device according to claim 6, characterized in that: An installation rod (17) is fixedly installed inside the top of the thread controller (5) on the side near the motor (13). A set of grooved wheels (18) is rotatably installed on the side of the installation rod (17) near the disc (14). The grooved wheels (18) have arc-shaped grooves corresponding to the bow plate (16) and straight grooves corresponding to the diameter of the round pin (15) around their perimeter. Multiple sets of levers (19) are fixedly installed on the side of the installation rod (17) away from the thread controller (5), and all sets of levers (19) engage with the circular grooves opened in the wire clamp (9).