Thread tension adjusting system of sewing machine and sewing machine

Abstract

The utility model discloses a thread tension adjusting system of a sewing machine and the sewing machine in the technical field of sewing machines, the thread tension adjusting system comprises a machine shell, a thread trapper, a driving electromagnet, a controller and a control panel, the thread trapper is arranged on one side of the machine shell, the driving electromagnet is arranged on the other side of the machine shell, and the driving electromagnet can drive the thread trapper to clamp or release an upper thread; the control panel can display and adjust wire tension parameters, the controller is electrically connected with the control panel and the driving electromagnet, and the controller can control the power-on current value of the driving electromagnet according to the wire tension parameters. According to the utility model, an electric adjusting mode is adopted, and the magnitude of the energizing current of the driving electromagnet is controlled, so that the rapid transplantation of thread tension parameters among a plurality of sewing machines is realized, and the style changing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to a thread tension adjustment system for a sewing machine and a sewing machine. Background Technology

[0002] In the sewing industry, flatbed sewing machines adjust the thread tension to change the appearance of the stitches. In the current market environment, garment demand is diversified, with trends towards small-batch, quick-response production and a wide variety of fabrics. This leads to frequent style changes by customers, which necessitates readjusting the thread tension. Existing mechanical thread tensioners control tension by adjusting the compression of the tension spring. This method relies entirely on feel, lacks quantitative adjustment capabilities, and cannot quickly transfer the thread tension parameters of a well-functioning machine to other machines. This means that adjusting thread tension is independent for each machine. Furthermore, adjustments must be made while sewing, requiring skilled operators, resulting in time-consuming processes and numerous uncontrollable factors, hindering cost reductions for garment factories.

[0003] Therefore, how to quickly transfer the thread tension parameters between multiple sewing machines has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of this utility model is to provide a thread tension adjustment system for sewing machines to address the above-mentioned technical problems, so as to realize the rapid transfer of thread tension parameters between multiple sewing machines.

[0005] The technical solution adopted in this utility model is as follows: a thread tension adjustment system for a sewing machine, the thread tension adjustment system comprising: a machine housing, a thread clamp, a drive electromagnet, a controller, and a control panel. The thread clamp is disposed on one side of the machine housing, and the drive electromagnet is disposed on the other side of the machine housing, and the drive electromagnet can drive the thread clamp to clamp or release the top thread; the control panel can display and adjust the thread tension parameters, the controller is electrically connected to the control panel and the drive electromagnet respectively, and the controller can control the energizing current value of the drive electromagnet according to the thread tension parameters.

[0006] Preferably, the line tension adjustment system further includes a communicator electrically connected to the control panel, the communicator being capable of receiving and transmitting line tension parameters.

[0007] Preferably, the communicator is a wireless communicator.

[0008] Preferably, the line tension adjustment system has a stand-alone operation mode and a unified operation mode.

[0009] Preferably, the thread tension adjustment system further includes a data storage device electrically connected to the controller, the data storage device being capable of storing thread tension parameters corresponding to the garment sewing kit.

[0010] Preferably, the line tension parameter is a percentage.

[0011] Preferably, the driving electromagnet includes a push-pull rod capable of axial reciprocating movement, the wire clamp includes a wire clamping shaft, and a secondary wire loosening rod, a return spring, and a main wire loosening rod are disposed between the push-pull rod and the wire clamping shaft. The main wire loosening rod is axially movable and disposed in the inner hole of the wire clamping shaft. One end of the secondary wire loosening rod abuts axially with the push-pull rod, and the other end of the secondary wire loosening rod abuts axially with one end of the main wire loosening rod. The return spring is disposed between the secondary wire loosening rod and the wire clamping shaft.

[0012] Preferably, the driving electromagnet includes a housing, a stationary iron core, a moving iron core, a push-pull rod, a front cover, and a rear cover. The stationary iron core is fixedly installed inside the housing, the moving iron core is movably installed inside the housing, the rear cover is installed at the rear end of the housing and fixedly connected to the moving iron core, the front cover is fixedly installed at the front end of the housing, and one end of the push-pull rod passes through the front cover and is axially fixedly connected to the moving iron core.

[0013] Preferably, a rubber pad is installed on the side of the rear cover near the housing, and when the driving electromagnet is energized, the axial distance between the rubber pad and the housing is 0.2mm.

[0014] Preferably, the wire clamp includes a wire clamping shaft, a wire clamping seat, a thrust plate, a wire clamping plate, a rubber vibration damping pad, a resistance plate, and a wire clamping cap. The wire clamping shaft is fixedly disposed in the inner hole of the wire clamping seat, and both ends of the wire clamping shaft extend to the outside of the wire clamping seat. The two wire clamping plates are sleeved face-to-face on the wire clamping shaft. A thrust plate that abuts axially against the main wire release rod is installed between the wire clamping plates and the wire clamping seat. A wire clamping cap is installed at the end of the wire clamping shaft. A rubber vibration damping pad and a resistance plate are installed between the wire clamping cap and the wire clamping plate. The rubber vibration damping pad is located between the resistance plate and the wire clamping plate, and the rubber vibration damping pad has a hollow structure.

[0015] The second objective of this invention is to provide a sewing machine including the thread tension adjustment system of the sewing machine described above.

[0016] The beneficial effects of this utility model are:

[0017] This invention employs an electric adjustment method, connecting a drive electromagnet mounted on the machine housing to the thread clamp. The drive electromagnet drives the thread clamp to tighten or release the top thread. The controller is electrically connected to both the control panel and the drive electromagnet. The magnitude of the current flowing through the drive electromagnet can be adjusted via the control panel and the controller, thereby adjusting the clamping force applied by the drive electromagnet to the thread clamp. In this way, by controlling the magnitude of the current flowing through the drive electromagnet, the thread tension parameters can be quickly transferred between multiple sewing machines, thus improving the efficiency of changing patterns. Attached Figure Description

[0018] Figure 1 This is a top view of the thread tension adjustment system of the sewing machine according to this utility model;

[0019] Figure 2 for Figure 1 AA view in the middle.

[0020] Figure 3 This is a schematic diagram of the control principle of the thread tension adjustment system of the sewing machine of this utility model;

[0021] Figure 4 This is a three-dimensional schematic diagram of the thrust plate;

[0022] Figure 5 This is a three-dimensional schematic diagram of a rubber vibration damping pad;

[0023] Figure 6 This is the interface for line tension parameters;

[0024] Figure 7 Screenshot of the interface for selecting a garment sewing package;

[0025] Figure 8 A screenshot of the parameter interface for a garment sewing package.

[0026] Explanation of the reference numerals in the figure:

[0027] 10. Housing;

[0028] 20. Wire clamp; 21. Wire clamping spool; 22. Wire clamping base; 23. Thrust plate; 231. Rib; 232. Protrusion; 24. Wire clamping plate; 25. Rubber vibration damping pad; 26. Resistance plate; 27. Wire clamping cap; 28. Wire take-up spring;

[0029] 30. Driving electromagnet; 31. Push-pull rod; 32. Housing; 33. Stationary iron core; 34. Moving iron core; 35. Front cover; 36. Rear cover; 37. Rubber pad;

[0030] 41. Secondary slack rod; 42. Return spring; 43. Main slack rod. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0032] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0035] Examples, such as Figures 1-8 As shown, a thread tension adjustment system for a sewing machine includes: a machine housing 10, a thread clamp 20, a drive electromagnet 30, a controller, and a control panel. The thread clamp 20 is disposed on one side of the machine housing 10, and the drive electromagnet 30 is disposed on the other side of the machine housing 10. The drive electromagnet 30 can drive the thread clamp 20 to clamp or release the thread. The control panel is disposed on the machine housing 10 and can display and adjust thread tension parameters. The controller is electrically connected to the control panel and is used to receive the thread tension parameters from the control panel. The controller is also electrically connected to the drive electromagnet 30 and can control the energizing current value of the drive electromagnet 30 according to the thread tension parameters, that is, the controller can adjust the current magnitude of the drive electromagnet 30 when energized according to the thread tension parameters.

[0036] This invention employs an electric adjustment method, connecting the drive electromagnet 30 mounted on the housing 10 to the thread clamp 20. The drive electromagnet 30 drives the thread clamp 20 to clamp or release the top thread. The controller is electrically connected to the control panel and the drive electromagnet 30, respectively. The magnitude of the current flowing through the drive electromagnet 30 can be adjusted via the control panel and the controller, thereby adjusting the clamping force applied by the drive electromagnet 30 to the thread clamp 20. In this way, by controlling the magnitude of the current flowing through the drive electromagnet 30, the thread tension parameters can be quickly transferred between multiple sewing machines, thus improving the efficiency of changing patterns.

[0037] Specific embodiment 1, such as Figures 1-8 As shown, a thread tension adjustment system for a sewing machine includes: a machine housing 10, a thread clamp 20, a drive electromagnet 30, a controller, and a control panel.

[0038] The wire clamp 20 is installed on one side of the housing 10, and the drive electromagnet 30 is installed on the other side of the housing 10, directly opposite the wire clamp 20. The drive electromagnet 30 is connected to the wire clamp 20 in a transmission manner, and the drive electromagnet 30 can drive the wire clamp 20 to clamp or release the wire, thereby realizing the adjustment of the wire tension.

[0039] The control panel (not shown in the figure) is mounted on the housing 10 and can display and adjust the line tension parameters. The controller (not shown in the figure) is electrically connected to the control panel and can receive the line tension parameters input on the control panel. The controller is also electrically connected to the drive electromagnet 30 and can control the energizing current value of the drive electromagnet 30 according to the line tension parameters. In other words, the controller can adjust the current magnitude of the drive electromagnet 30 when it is energized according to the line tension parameters.

[0040] Preferred, such as Figure 6 As shown, the thread tension parameter is displayed as a percentage, meaning the control panel shows the thread tension as a percentage. The current thread tension parameter of the sewn fabric can be displayed and modified in the thread tension parameter adjustment interface. The display format is percentage, with each percentage corresponding to a current duty cycle gradient. The thread tension parameter can be adjusted using "+" and "-" options, or by directly entering the desired percentage value. Modifications take effect immediately.

[0041] More preferably, such as Figure 3 , Figure 7 and Figure 8As shown, the thread tension adjustment system also includes a data storage device electrically connected to the controller. This data storage device can store thread tension parameters corresponding to the garment sewing kit, allowing users to easily access these parameters. Multiple garment kits can be selected on the machine sewing kit interface, each with a corresponding thread tension percentage value. For example... Figure 8 As shown, you can see the thread tension percentage value corresponding to this sewing kit, which can be adjusted directly.

[0042] Specific embodiment 2, such as Figures 1-8 As shown, a thread tension adjustment system for a sewing machine includes: a housing 10, a thread clamp 20, a drive electromagnet 30, a controller, a communicator, and a control panel.

[0043] The wire clamp 20 is installed on the front side of the housing 10, and the drive electromagnet 30 is installed on the rear side of the housing 10, directly opposite the wire clamp 20. The drive electromagnet 30 is connected to the wire clamp 20 in a transmission manner, and the drive electromagnet 30 can drive the wire clamp 20 to clamp or release the wire, thereby realizing the adjustment of the wire tension.

[0044] The control panel (not shown in the figure) is installed on the front side of the housing 10 and can display and adjust the line tension parameters; the controller (not shown in the figure) is installed inside the housing 10 and is electrically connected to the control panel, and the controller can receive the line tension parameters displayed on the control panel.

[0045] The communicator (not shown in the figure) is installed inside the housing 10. The communicator is electrically connected to the control panel and can communicate with external devices to input line tension parameters to the control panel from the external devices. The communicator can also send the line tension parameters input on the control panel to the external devices.

[0046] The controller is also electrically connected to the drive electromagnet 30, and the controller can control the energizing current value of the drive electromagnet 30 according to the received line tension parameters.

[0047] Preferably, the communicator is a wireless communicator, such as Bluetooth, so that the user can adjust the line tension parameters via a mobile phone.

[0048] More preferably, the thread tension adjustment system has a single-machine operation mode and a unified operation mode; when the sewing machine is in single-machine operation mode, the user can freely adjust the thread tension parameters of a single sewing machine; when the sewing machines are in the same operation mode, the thread tension parameters of multiple sewing machines can be uniformly adjusted.

[0049] Specific embodiment 3, such as Figures 1-8As shown, a thread tension adjustment system for a sewing machine includes: a machine housing 10, a thread clamp 20, a drive electromagnet 30, a controller, and a control panel.

[0050] The wire clamp 20 is installed on one side of the housing 10, and the drive electromagnet 30 is installed on the other side of the housing 10, directly opposite the wire clamp 20. The drive electromagnet 30 is connected to the wire clamp 20 in a transmission manner, and the drive electromagnet 30 can drive the wire clamp 20 to clamp or release the wire, thereby realizing the adjustment of the wire tension.

[0051] Specifically, such as Figure 2 As shown, the driving electromagnet 30 includes a push-pull rod 31 capable of axial reciprocating movement. The wire clamp 20 includes a wire clamping shaft 21, and a transmission connection structure is installed between the push-pull rod 31 and the wire clamping shaft 21. This transmission connection structure is located inside the housing 10 and includes a secondary wire loosening rod 41, a return spring 42, and a main wire loosening rod 43. The wire clamping shaft 21 has a hollow structure, and the main wire loosening rod 43 is coaxially inserted into the inner hole of the wire clamping shaft 21. The wire rod 43 can reciprocate along the axial direction; the auxiliary wire slack rod 41 is coaxially arranged with the main wire slack rod 43, and one end of the auxiliary wire slack rod 41 axially abuts against the end of the push-pull rod 31, and the other end of the auxiliary wire slack rod 41 axially abuts against the end of the main wire slack rod 43. The return spring 42 is installed between the auxiliary wire slack rod 41 and the clamping shaft 21 so that after the drive electromagnet 30 is de-energized, the main wire slack rod 43 and the auxiliary wire slack rod 41 can be reset under the elastic force of the return spring 42.

[0052] The control panel (not shown in the figure) is mounted on the housing 10 and can display and adjust the line tension parameters. The controller (not shown in the figure) is electrically connected to the control panel and can receive the line tension parameters input on the control panel. The controller is also electrically connected to the drive electromagnet 30 and can control the energizing current value of the drive electromagnet 30 according to the line tension parameters. In other words, the controller can adjust the current magnitude of the drive electromagnet 30 when it is energized according to the line tension parameters.

[0053] Preferred, such as Figure 2 , Figure 4 and Figure 5As shown, the driving electromagnet 30 includes a housing 32, a stationary iron core 33, a moving iron core 34, a push-pull rod 31, a front cover 35, and a rear cover 36. The front cover 35 is fixedly installed at the front end of the housing 32 and is fixedly connected to the housing 10 by screws. The stationary iron core 33 is fixedly installed inside the housing 32. The moving iron core 34 is movably installed inside the housing 32. The rear cover 36 is installed at the rear end of the housing 32 and is fixedly connected to the rear end of the moving iron core 34. One end of the push-pull rod 31 passes through the front cover 35 and is axially fixedly connected to the front end of the moving iron core 34, so that when the driving electromagnet 30 is energized, the moving iron core 34 can drive the push-pull rod 31 to move axially.

[0054] The wire clamp includes a wire clamping shaft 21, a wire clamping seat 22, a thrust plate 23, a wire clamping plate 24, a rubber damping pad 25, a resistance plate 26, and a wire clamping cap 27. The wire clamping seat 22 is fixedly connected to the housing 10. The wire clamping shaft 21 is fixedly installed in the inner hole of the wire clamping seat 22, and both ends of the wire clamping shaft 21 extend to the outside of the wire clamping seat 22. A wire take-up spring 28 is also installed between the wire clamping shaft 21 and the wire clamping seat 22.

[0055] There are two clamping plates 24, which are fitted face-to-face on the clamping shaft 21 to apply clamping force to the face thread. A thrust plate 23 is installed between the ends of the clamping plates 24 and the clamping seat 22. The thrust plate 23 is fitted on the clamping shaft 21. The rib 231 in the shaft hole of the thrust plate 23 is slidably connected to the axial groove of the clamping shaft 21. One end of the main loosening rod 43 abuts axially with the rib 231 of the thrust plate 23 so that the axial movement of the main loosening rod 43 drives the thrust plate 23 to move closer to or away from the clamping plates 24, thereby realizing the clamping and release of the face thread.

[0056] A wire clamping cap 27 is installed at the end of the wire clamping shaft 21. A rubber damping pad 25 and a resistance plate 26 are installed between the wire clamping cap 27 and the wire clamping plate 24. The rubber damping pad 25 and the resistance plate 26 are both sleeved on the wire clamping shaft 21, and the rib in the shaft hole of the resistance plate 26 is slidably connected to the axial groove of the wire clamping shaft 21. The rubber damping pad 25 is located between the resistance plate 26 and the wire clamping plate 24, and the rubber damping pad 25 has a hollow structure to increase the pressure of the force on the edge of the rubber damping pad 25.

[0057] Preferably, a protrusion 232 is formed on the side of the thrust plate 23 near the clamping plate 24. There are multiple protrusions 232, such as three. The multiple protrusions 232 are evenly distributed along the circumference of the thrust plate 23, and the position of the protrusion 232 is exactly at the line crossing position, so that the local pressure at the line crossing position is greater.

[0058] More preferably, a rubber pad 37 is installed on the side of the rear cover 36 near the housing 32. When the driving electromagnet 30 is energized, the axial distance between the rubber pad 37 and the housing 32 is 0.2mm, so as to increase the amount of wire loosening, so that the wire end becomes longer after loosening, and achieves the purpose of not detaching the wire when starting.

[0059] An embodiment includes a sewing machine comprising the thread tension adjustment system described above.

[0060] The working process of the line tension adjustment system of this utility model is as follows:

[0061] The driving electromagnet 30 provides a power source. The push-pull rod 31 extends and pushes the auxiliary slack rod 41 forward. After the auxiliary slack rod 41 is subjected to force, it pushes the main slack rod 43 forward. After the main slack rod 43 is subjected to force, it pushes the thrust plate 23 forward. Since the front wire clamp cap 27 is fixed by screws, it no longer moves forward. This causes the rear rubber damping pad 25 and resistance plate 26 to also no longer move forward. As a result, a squeezing force is generated between the two wire clamp plates 24, which generates line tension in the wire between the two wire clamp plates 24. The greater the current value controlling the thrust of the driving electromagnet 30, the greater the line tension generated in the wire.

[0062] Compared with the prior art, the present invention has at least the following beneficial technical effects:

[0063] This invention enables parameterized stepless adjustment of thread tension during pattern changes, allowing for remote and unmanned adjustment of thread tension, thus improving pattern change efficiency and serving as a prelude to future automated sewing scenarios.

[0064] This invention enables the digitalization and quantification of line tension adjustment, and the parameters can be copied. It not only simplifies adjustment and reduces the need for trial runs, but also allows for remote adjustment via Bluetooth on a mobile phone.

[0065] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A thread tension adjustment system for a sewing machine, characterized in that, The wire tension adjustment system includes: a housing (10), a wire clamp (20), a drive electromagnet (30), a controller, and a control panel. The wire clamp (20) is located on one side of the housing (10), and the drive electromagnet (30) is located on the other side of the housing (10). The drive electromagnet (30) can drive the wire clamp (20) to clamp or release the wire. The control panel can display and adjust the wire tension parameters. The controller is electrically connected to the control panel and the drive electromagnet (30), and the controller can control the energizing current value of the drive electromagnet (30) according to the wire tension parameters.

2. The thread tension adjustment system for a sewing machine according to claim 1, characterized in that, The line tension adjustment system also includes a communicator electrically connected to the control panel, which is capable of receiving and transmitting line tension parameters.

3. The thread tension adjustment system for a sewing machine according to claim 2, characterized in that, The communicator is a wireless communication device.

4. A thread tension adjustment system for a sewing machine according to claim 2 or 3, characterized in that, The line tension adjustment system has a stand-alone operation mode and a unified operation mode.

5. The thread tension adjustment system for a sewing machine according to claim 1, characterized in that, The thread tension adjustment system also includes a data storage device electrically connected to the controller, which is capable of storing thread tension parameters corresponding to the garment sewing kit.

6. The thread tension adjustment system for a sewing machine according to claim 1, characterized in that, The line tension parameter is a percentage.

7. The thread tension adjustment system for a sewing machine according to claim 1, characterized in that, The driving electromagnet (30) includes a push-pull rod (31) capable of axial reciprocating movement. The wire clamp (20) includes a wire clamping shaft (21). A secondary wire loosening rod (41), a return spring (42), and a main wire loosening rod (43) are provided between the push-pull rod (31) and the wire clamping shaft (21). The main wire loosening rod (43) is axially movable and is disposed in the inner hole of the wire clamping shaft (21). One end of the secondary wire loosening rod (41) abuts axially with the push-pull rod (31), and the other end of the secondary wire loosening rod (41) abuts axially with one end of the main wire loosening rod (43). The return spring (42) is disposed between the secondary wire loosening rod (41) and the wire clamping shaft (21).

8. The thread tension adjustment system for a sewing machine according to claim 7, characterized in that, The driving electromagnet (30) includes a housing (32), a stationary iron core (33), a moving iron core (34), a push-pull rod (31), a front cover (35), and a rear cover (36). The stationary iron core (33) is fixedly installed inside the housing (32). The moving iron core (34) is movably installed inside the housing (32). The rear cover (36) is installed at the rear end of the housing (32) and fixedly connected to the moving iron core (34). The front cover (35) is fixedly installed at the front end of the housing (32). One end of the push-pull rod (31) passes through the front cover (35) and is axially fixedly connected to the moving iron core (34).

9. The thread tension adjustment system for a sewing machine according to claim 8, characterized in that, A rubber pad (37) is installed on the side of the rear cover (36) near the housing (32). When the driving electromagnet (30) is energized, the axial distance between the rubber pad (37) and the housing (32) is 0.2 mm.

10. A thread tension adjustment system for a sewing machine according to claim 7, characterized in that, The wire clamp (20) includes a wire clamping shaft (21), a wire clamping seat (22), a thrust plate (23), wire clamping plates (24), a rubber damping pad (25), a resistance plate (26), and a wire clamping cap (27). The wire clamping shaft (21) is fixedly installed in the inner hole of the wire clamping seat (22), and both ends of the wire clamping shaft (21) extend to the outside of the wire clamping seat (22). The two wire clamping plates (24) are fitted face-to-face on the wire clamping shaft (21). 24) A thrust plate (23) is installed between the clamping seat (22) and the main slack rod (43) and abuts axially; a clamping cap (27) is installed at the end of the clamping shaft (21), and a rubber damping pad (25) and a resistance plate (26) are installed between the clamping cap (27) and the clamping plate (24). The rubber damping pad (25) is located between the resistance plate (26) and the clamping plate (24), and the rubber damping pad (25) is provided with a hollow structure.

11. A sewing machine, characterized in that, Includes the thread tension adjustment system for a sewing machine according to any one of claims 1-10.

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