Automatic thread tension detection equipment for adjusting bottom thread tension

Abstract

The utility model discloses automatic thread tension detection equipment for adjusting bottom thread tension, and aims to provide the automatic thread tension detection equipment which can detect the tightness of a bottom thread in real time in the process of adjusting the tightness of the bottom thread so as to ensure the accuracy and the consistency of the adjustment of the tightness of the bottom thread. Therefore, the automatic thread tension detection equipment for adjusting the tension of the bottom thread is provided. The device comprises a support; a detection sensor is arranged between the wire element and the bracket; the bottom thread in the bobbin case is output through the bottom thread output mechanism, and the bottom thread bypasses the thread guide element in the process that the bottom thread in the bobbin case is output through the bottom thread output mechanism, so that the detection sensor is pressed or pulled.

Description

Technical Field

[0001] The utility model relates to the field of textile equipment, in particular to an automatic thread tension detection device for adjusting the tension of a bottom thread. Background Art

[0002] Currently, sewing machines, embroidery machines, and other textile equipment in the textile industry require a bobbin. The bobbin consists of a bobbin case and a bobbin core. The bobbin case has an adjustment screw for adjusting the tension of the bobbin thread. The bobbin thread should not be too tight or too loose after being threaded.

[0003] Currently, the bobbin thread tension adjustment method in textile equipment such as sewing and embroidery machines generally relies on the operator's experience and feel, adjusting the thread tension directly by tightening or loosening the adjustment screw. This results in poor adjustment accuracy and consistency, and textile quality cannot be guaranteed. In particular, with the development of embroidery machines, the number of head stations on embroidery machines has continued to increase. Currently, multi-station embroidery machines have dozens or even hundreds of head stations, each arranged in a row. Each head station's shuttle box houses a head for installing the bobbin thread. Consequently, in a multi-station embroidery machine, dozens or even hundreds of bobbins are simultaneously present. The poor adjustment accuracy and consistency of these bobbin thread tensions seriously affect the quality of the embroidery product. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic thread tension detection device for adjusting the thread tension, which can detect the thread tension of the thread in real time during the thread tension adjustment process to ensure the accuracy and consistency of the thread tension adjustment, thereby improving the textile quality.

[0005] The technical solution of the utility model is:

[0006] An automatic thread tension detection device for adjusting the tension of a bobbin thread, comprising:

[0007] Bracket;

[0008] A conductor element, wherein a detection sensor is provided between the conductor element and the bracket;

[0009] The bobbin case is fed through the bobbin case feeding mechanism, and during the feeding process, the bobbin case is fed through the bobbin case feeding mechanism, the bobbin case passes around the wire element, thereby causing the detection sensor to be compressed or stretched. The specific use of the automatic detection device for adjusting the bobbin tension of the present invention is as follows:

[0010] The bobbin thread in the bobbin case is output through the bobbin thread output mechanism. During this process, the bobbin thread bypasses the wire element, and the force exerted by the bobbin thread on the wire element is detected in real time by a detection sensor. When the detection sensor detects that the force exerted by the bobbin thread on the wire element is greater than a set value, the adjusting screw on the bobbin case is slowly loosened until the detection sensor detects that the force exerted by the bobbin thread on the wire element falls within the set value range, and then the loosening of the adjusting screw is stopped. When the detection sensor detects that the force exerted by the bobbin thread on the wire element is less than the set value, the adjusting screw on the bobbin case is slowly tightened until the detection sensor detects that the force exerted by the bobbin thread on the wire element falls within the set value range, and then the tightening of the adjusting screw is stopped. In this way, by performing real-time detection of the bobbin thread tightness during the bobbin thread tightness adjustment process, the accuracy and consistency of the bobbin thread tightness adjustment in each bobbin case are ensured, thereby improving the textile quality.

[0011] Preferably, the bottom thread output mechanism comprises a thread delivery wheel and a rotation drive mechanism for driving the thread delivery wheel to rotate, wherein the rotation drive mechanism is arranged on the bracket. The bottom thread output mechanism drives the thread delivery wheel to rotate by the rotation drive mechanism, thereby outputting the bottom thread from the bobbin case.

[0012] Preferably, the bobbin thread output mechanism further comprises a thread pressing wheel and an elastic element. The thread pressing wheel is pressed against the thread feeding wheel by the elastic element, and the bobbin thread passes between the thread feeding wheel and the thread pressing wheel. As the bobbin thread passes between the thread feeding wheel and the thread pressing wheel, the bobbin thread output mechanism is pressed between the thread feeding wheel and the thread pressing wheel by the elastic element. In this way, the bobbin thread output mechanism can output the bobbin thread from the bobbin case by driving the thread feeding wheel to rotate via the rotary drive motor, without having to wind the bobbin thread around the thread feeding wheel. This facilitates practical operation and ensures stable bobbin thread output.

[0013] Preferably, the bottom line output mechanism further comprises a swing arm, which is rotatably mounted on the bracket, and the line pressing wheel is rotatably mounted on the swing arm, and the elastic element drives the swing arm to rotate so that the line pressing wheel presses against the line delivery wheel.

[0014] Preferably, the bottom line output mechanism includes:

[0015] A bottom line fixing piece, on which the bottom line is fixed;

[0016] The movable actuator mounted on the bracket drives the bobbin thread holder to move, thereby delivering the bobbin thread from the bobbin case. This allows the bobbin thread delivery mechanism to deliver the bobbin thread from the bobbin case by driving the bobbin thread holder via the movable actuator, making operation easy and ensuring smooth bobbin thread delivery.

[0017] Preferably, the moving actuator includes a belt transmission mechanism and a driving motor for driving the belt transmission mechanism, and the bottom thread fixing member is fixed to a conveyor belt of the belt transmission mechanism. In this way, the bottom thread fixing member can be driven to move by the conveyor belt to output the bottom thread in the bobbin case.

[0018] Preferably, the movable actuator is a pneumatic cylinder, an electric cylinder or a linear module. In this way, the pneumatic cylinder, the electric cylinder or the linear module can drive the bottom line fixing member to move so as to output the bottom line in the bobbin case.

[0019] Preferably, the movable actuator includes a drive motor, a gear, and a slidably mounted rack, wherein the gear and rack are meshed with each other, the drive motor drives the gear to rotate, and the bottom thread holder is fixed to the rack. In this way, the drive motor drives the gear to rotate, thereby moving the rack and bottom thread holder, thereby delivering the bottom thread from the bobbin case.

[0020] Preferably, the movable actuator includes a drive motor and a swing arm, wherein the swing arm is fixed to the output shaft of the drive motor, and the bottom thread fixing member is fixed to the swing arm. In this way, the swing arm and the bottom thread fixing member can be driven by the drive motor to rotate and move, thereby outputting the bottom thread in the bobbin case.

[0021] As preferably, the bottom line fixing member comprises a line clamp or a connecting rod or a connecting ring or a connecting hole or a connecting hook that is fixedly connected to the bottom line. The bottom line can be fixedly connected on the line clamp or the connecting rod or the connecting ring or the connecting hole or the connecting hook.

[0022] Preferably, during the process of the bobbin thread passing around the conductor element, the bobbin threads on either side of the conductor element are arranged at a predetermined angle. Due to the predetermined angle, the pressure exerted by the bobbin thread on the conductor element during the bobbin thread output process can be detected smoothly by the detection sensor.

[0023] Preferably, the bracket is further provided with two thread-passing elements. During the process of the bobbin case's bobbin thread being outputted through the bobbin thread output mechanism, the bobbin thread sequentially passes around one thread-passing element, the conductor element, and the other thread-passing element, with the conductor element and the bobbin thread between the two thread-passing elements forming a V-shaped distribution. In this manner, the bobbin thread trace direction can be adjusted by the two thread-passing elements, so that the conductor element and the bobbin thread between the two thread-passing elements form a V-shaped distribution, thereby enabling the detection sensor to detect the force exerted by the bobbin thread on the conductor element in real time. Furthermore, this can facilitate the layout of the bobbin case and the bobbin thread output mechanism, facilitating adaptation to different positional layouts of the bobbin case and the bobbin thread output mechanism.

[0024] Preferably, the bracket is provided with a bobbin case storage station, in which the bobbin case is stored, and there are one or more bobbin case storage stations. In this way, when adjusting the tension of the bobbin thread, the bobbin case can be stored in the bobbin case storage station, and then the bobbin thread in the bobbin case can be output through the bobbin thread output mechanism, so as to facilitate the actual operation.

[0025] Preferably, the apparatus further comprises a bobbin thread storage tray, which is detachably mounted on the bracket and rotatably provided with a plurality of bobbin case storage stations distributed circumferentially, wherein the bobbin cases are stored in the bobbin case storage stations. In this way, the tightness of the bobbin thread in each bobbin case storage station on the bobbin thread storage tray can be adjusted sequentially.

[0026] Preferably, the bottom thread storage tray is rotated by manual drive; or a tray motor is provided on the bracket, and the bottom thread storage tray is rotated by the motor.

[0027] Preferably, a display is further included, the display being electrically connected to the detection sensor. Thus, during the process of adjusting the tension of the bobbin thread, the force detected by the detection sensor can be displayed on the display, so that the operator can directly observe the force of the bobbin thread acting on the conductor element, which is conducive to accurately adjusting the tension of the bobbin thread.

[0028] Preferably, the conductor element is a conductor wheel, a conductor shaft, a conductor ring, or a guide block provided with a conductor groove.

[0029] Preferably, the device further comprises a sensor support and a wire support, wherein the sensor support is connected to the bracket, the detection sensor is arranged on the sensor support, the wire support is connected to the detection sensor, and the wire element is arranged on the wire support. This facilitates the installation of the detection sensor and the wire element and facilitates actual production.

[0030] The beneficial effect of the utility model is that the bobbin thread tightness can be detected in real time during the bobbin thread tightness adjustment process, so as to ensure the accuracy and consistency of the bobbin thread tightness adjustment, thereby improving the textile quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional structural schematic diagram of a first embodiment of the utility model of an automatic thread tension detection device for adjusting the tension of the bottom thread.

[0032] Figure 2 It is a side view of a first embodiment of an automatic thread tension detection device for adjusting the tension of a bottom thread of the utility model.

[0033] Figure 3 It is a three-dimensional structural schematic diagram of a second embodiment of the present utility model of an automatic thread tension detection device for adjusting the tension of the bottom thread.

[0034] Figure 4 It is a side view of a second embodiment of the automatic thread tension detection device for adjusting the bottom thread tension of the utility model.

[0035] Figure 5It is a three-dimensional structural schematic diagram of a third embodiment of the present utility model of an automatic thread tension detection device for adjusting the tension of the bottom thread.

[0036] Figure 6 This is a three-dimensional structural schematic diagram of a fourth embodiment of the present utility model of an automatic thread tension detection device for adjusting the tension of the bottom thread.

[0037] In the picture:

[0038] Bracket 1;

[0039] Conductor element 2;

[0040] Detection sensor 3;

[0041] Bottom line 4;

[0042] Bottom line output mechanism 5, thread delivery wheel 5.1, rotary drive mechanism 5.2, thread pressing wheel 5.3, swing arm 5.4, handle 5.5, bottom line fixing member 5.6, moving actuator 5.7;

[0043] Sensor support 6;

[0044] Wire support 7;

[0045] Display 8;

[0046] Bobbin case storage station 9;

[0047] Bobbin case 10;

[0048] Bottom line storage tray 11;

[0049] Line passing element 12;

[0050] Feed tray motor 13. DETAILED DESCRIPTION

[0051] Specific embodiment 1, as Figure 1 、 Figure 2 As shown, an automatic thread tension detection device for adjusting the bobbin thread tension includes a bracket 1, a thread element 2, a detection sensor 3, and a bobbin thread delivery mechanism 5. The detection sensor 3 is disposed between the thread element 2 and the bracket 1. The bobbin thread 4 in the bobbin case is delivered via the bobbin thread delivery mechanism 5. As the bobbin thread in the bobbin case is delivered via the bobbin thread delivery mechanism 5, the bobbin thread bypasses the thread element 2, causing the detection sensor 3 to be compressed or stretched.

[0052] The specific use of the automatic thread tension detection device for adjusting the thread tension of the present embodiment is as follows:

[0053] The bobbin thread in the bobbin case is output through the bobbin thread output mechanism 5. During this process, the bobbin thread bypasses the wire element 2, and the force exerted by the bobbin thread on the wire element 2 is detected in real time by the detection sensor 3. When the detection sensor 3 detects that the force exerted by the bobbin thread on the wire element 2 is greater than the set value, the adjusting screw on the bobbin case is slowly loosened until the detection sensor 3 detects that the force exerted by the bobbin thread on the wire element 2 falls within the set value range, and then the loosening of the adjusting screw is stopped. When the detection sensor 3 detects that the force exerted by the bobbin thread on the wire element 2 is less than the set value, the adjusting screw on the bobbin case is slowly tightened until the detection sensor 3 detects that the force exerted by the bobbin thread on the wire element 2 falls within the set value range, and then the tightening of the adjusting screw is stopped. In this way, by performing real-time detection of the bobbin thread tightness during the bobbin thread tightness adjustment process, the accuracy and consistency of the bobbin thread tightness adjustment in each bobbin case are ensured, thereby improving the textile quality.

[0054] Specific embodiment 2, as Figure 1-Figure 4 As shown, an automatic thread tension detection device for adjusting the thread tension includes a bracket 1, a conductor element 2, a detection sensor 3 and a thread output mechanism 5.

[0055] The detection sensor 3 is disposed between the wire element 2 and the bracket 1. The detection sensor 3 is an existing sensor, such as a force sensor (tension and pressure sensor).

[0056] In one embodiment, Figure 1 、 Figure 2 As shown, an automatic thread tension detection device for adjusting the tension of a bobbin thread further includes a sensor support 6 and a conductor support 7. The sensor support 6 is connected to the bracket 1, for example, by bolts, welding, or riveting. The conductor support 7 is connected to the detection sensor 3, for example, by bolts, welding, or riveting. The conductor element 2 is disposed on the conductor support 7.

[0057] In another embodiment, an automatic thread tension detection device for adjusting the tension of a bobbin thread further includes a conductor support 7. The detection sensor 3 is directly mounted on the bracket 1, for example, by bolts, welding, or riveting. The conductor support 7 is connected to the detection sensor 3, for example, by bolts, welding, or riveting. The conductor element 2 is disposed on the conductor support 7.

[0058] Specifically, the conductor element is a conductor wheel, a conductor shaft, a conductor ring, or a guide block provided with a conductor groove.

[0059] In one example, Figure 1 、 Figure 2As shown, the conductor element is a conductor wheel, which is rotatably arranged on the conductor support 7.

[0060] In another example, Figure 3 、 Figure 4 As shown, the conductor element is a conductor shaft, which is rotatably arranged on the conductor support 7, or the conductor shaft is fixedly arranged on the conductor support 7.

[0061] The bobbin thread 4 in the bobbin case is delivered by the bobbin thread delivery mechanism 5. As the bobbin thread in the bobbin case is delivered by the bobbin thread delivery mechanism 5, the bobbin thread bypasses the thread guide element 2, causing the detection sensor 3 to be compressed or stretched. The detection sensor 3 detects the force of the bobbin thread on the thread guide element 2.

[0062] The specific use of the automatic thread tension detection device for adjusting the thread tension of the present embodiment is as follows:

[0063] The bobbin thread in the bobbin case is output through the bobbin thread output mechanism 5. During this process, the bobbin thread bypasses the wire element 2, and the force exerted by the bobbin thread on the wire element 2 is detected in real time by the detection sensor 3. When the detection sensor 3 detects that the force exerted by the bobbin thread on the wire element 2 is greater than the set value, the adjusting screw on the bobbin case is slowly loosened until the detection sensor 3 detects that the force exerted by the bobbin thread on the wire element 2 falls within the set value range, and then the loosening of the adjusting screw is stopped. When the detection sensor 3 detects that the force exerted by the bobbin thread on the wire element 2 is less than the set value, the adjusting screw on the bobbin case is slowly tightened until the detection sensor 3 detects that the force exerted by the bobbin thread on the wire element 2 falls within the set value range, and then the tightening of the adjusting screw is stopped. In this way, by performing real-time detection of the bobbin thread tightness during the bobbin thread tightness adjustment process, the accuracy and consistency of the bobbin thread tightness adjustment in each bobbin case are ensured, thereby improving the textile quality.

[0064] Further, such as Figure 1-Figure 4 As shown, during the process of the bottom thread winding around the conductor element 2, the bottom threads on either side of the conductor element 2 are arranged at a set angle. The set angle between the bottom threads on either side of the conductor element 2 is 0-180 degrees. For example, the set angle between the bottom threads on either side of the conductor element 2 is 170 degrees, 160 degrees, 150 degrees, 130 degrees, 120 degrees, 100 degrees, 90 degrees, 70 degrees, 60 degrees, 45 degrees, 30 degrees, or 20 degrees. Since the bottom threads on either side of the conductor element 2 are arranged at the set angle, the force exerted by the bottom threads on the conductor element 2 during the process of the bottom thread winding can be smoothly detected by the detection sensor 3.

[0065] In one embodiment, Figure 1-Figure 4As shown, the bobbin threads on both sides of the thread element 2 are arranged in a V-shape, and the openings of the bobbin threads on both sides of the thread element 2 face the detection sensor 3. In this embodiment, when the bobbin thread in the bobbin case is delivered by the bobbin thread delivery mechanism 5, the bobbin thread bypasses the thread element 2, thereby pressuring the detection sensor 3.

[0066] In another embodiment, the bobbin threads on either side of the thread element 2 are arranged in a V-shape, with the openings of the bobbin threads on either side of the thread element 2 facing away from the detection sensor 3. In this embodiment, as the bobbin thread in the bobbin case is delivered by the bobbin thread delivery mechanism 5, the bobbin thread bypasses the thread element 2, causing the detection sensor 3 to be pulled.

[0067] Furthermore, the lower thread 4 in the bobbin case 10 is delivered by the lower thread delivery mechanism 5 .

[0068] In one embodiment, Figure 1 、 Figure 2 As shown, the bobbin thread output mechanism 5 includes a feeding wheel 5.1, a pressing wheel 5.3, an elastic element, and a rotary drive mechanism 5.2 that drives the feeding wheel 5.1 to rotate. The rotary drive mechanism 5.2 is disposed on the bracket 1. The rotary drive mechanism 5.2 is a rotary motor, the output shaft of which is connected to the rotating shaft of the feeding wheel 5.1. The pressing wheel 5.3 is pressed against the feeding wheel 5.1 by the elastic element, and the bobbin thread passes between the feeding wheel 5.1 and the pressing wheel 5.3. Since the bobbin thread passes between the feeding wheel 5.1 and the pressing wheel 5.3, the bobbin thread output mechanism 5 is able to output the bobbin thread from the bobbin case by driving the feeding wheel 5.1 to rotate via the rotary drive motor, eliminating the need to wind the bobbin thread around the feeding wheel 5.1. This facilitates practical operation and ensures smooth output of the bobbin thread.

[0069] In one example, Figure 1 、 Figure 2 As shown, the bottom line output mechanism 5 also includes a swing arm 5.4. The swing arm 5.4 is rotatably mounted on the bracket 1. The line pressing wheel 5.3 is rotatably mounted on the swing arm 5.4. An elastic element drives the swing arm 5.4 to rotate so that the line pressing wheel 5.3 is pressed against the line feeding wheel 5.1. In this example, the elastic element is a torsion spring or a spring or an elastic sheet or an elastic rubber member. A handle 5.5 for driving the swing arm 5.4 to rotate is provided on the swing arm 5.4, and the handle 5.5 extends radially along the rotating shaft of the swing arm 5.4. In actual use, the swing arm 5.4 can be driven to rotate by the handle 5.5, thereby driving the line pressing wheel 5.3 to separate from the line feeding wheel 5.1.

[0070] In another example, the pressing wheel 5.3 is rotatably mounted on a wheel support, which is slidably connected to the bracket 1 (not shown). An elastic element drives the wheel support toward the feeding wheel 5.1, so that the pressing wheel 5.3 presses against the feeding wheel 5.1. In this example, the elastic element is a spring, an elastic sheet, or an elastic rubber member.

[0071] In another embodiment, the bobbin thread delivery mechanism 5 includes a bobbin thread delivery wheel 5.1 and a rotary drive mechanism 5.2 for rotating the bobbin thread delivery wheel 5.1. The rotary drive mechanism 5.2 is mounted on the bracket 1. The rotary drive mechanism 5.2 is a rotary motor, the output shaft of which is connected to the rotating shaft of the bobbin thread delivery wheel 5.1. The bobbin thread is wound around the bobbin thread delivery wheel 5.1. The bobbin thread delivery mechanism 5 rotates the bobbin thread delivery wheel 5.1 via the rotary drive, thereby delivering the bobbin thread from the bobbin case.

[0072] In a third embodiment, as Figure 5 As shown, the bottom thread output mechanism 5 includes a bottom thread fixing member 5.6 and a movable actuator 5.7 disposed on a bracket. The bottom thread 4 is fixed to the bottom thread fixing member 5.6. Specifically, the bottom thread fixing member 5.6 includes a wire clamp, a connecting rod, a connecting ring, a connecting hole, or a connecting hook that is fixedly connected to the bottom thread. The bottom thread is clamped and fixed by the wire clamp; or the bottom thread is fixedly connected to the connecting rod, a connecting ring, a connecting hole, or a connecting hook. The movable actuator 5.7 drives the bottom thread fixing member 5.6 to move, thereby outputting the bottom thread in the bobbin case. In this way, the bottom thread output mechanism drives the bottom thread fixing member 5.6 to move by the movable actuator 5.7, thereby outputting the bottom thread in the bobbin case. This is convenient to operate and ensures smooth output of the bottom thread.

[0073] In one example, Figure 5 As shown, the movable actuator 5.7 includes a belt transmission mechanism and a drive motor for driving the belt transmission mechanism, and the bottom thread fixing member 5.6 is fixed to the conveyor belt of the belt transmission mechanism. In this way, the bottom thread fixing member 5.6 can be driven by the conveyor belt to move and output the bottom thread in the bobbin case.

[0074] In another example, the moving actuator 5.7 is a pneumatic cylinder, an electric cylinder, or a linear module (not shown in the figure), so that the pneumatic cylinder, the electric cylinder, or the linear module can drive the bottom thread fixing member 5.6 to move so as to output the bottom thread in the bobbin case.

[0075] In the third example, the movable actuator 5.7 comprises a drive motor, a gear, and a slidably mounted rack (not shown). The gear meshes with the rack, and the drive motor drives the gear to rotate. The bobbin thread holder 5.6 is fixed to the rack. Thus, the drive motor drives the gear to rotate, moving the rack and bobbin thread holder 5.6, thereby ejecting the bobbin thread from the bobbin case.

[0076] In the fourth example, the movable actuator 5.7 includes a drive motor and a swing arm (not shown). The swing arm is fixed to the output shaft of the drive motor, and the bobbin thread holder 5.6 is fixed to the swing arm. Thus, the drive motor can drive the swing arm and bobbin thread holder 5.6 to rotate and move, thereby ejecting the bobbin thread from the bobbin case.

[0077] Of course, the mobile actuator 5.7 can also be other mobile actuators 5.7 in the prior art.

[0078] Specific embodiment 3: The rest of the structure of this embodiment refers to specific embodiment 1 or specific embodiment 2, except that:

[0079] In this embodiment, Figure 3 、 Figure 4 As shown, bracket 1 is also provided with two thread-passing elements 12. As the bobbin thread 4 in the bobbin case is delivered through the bobbin thread delivery mechanism, it sequentially passes around one thread-passing element 12, the conductor element 2, and the other thread-passing element 12, with the bobbin thread 4 forming a V-shaped arrangement between the conductor element 2 and the two thread-passing elements 12. This allows the two thread-passing elements 12 to adjust the thread path of the bobbin thread, creating a V-shaped arrangement between the conductor element and the two thread-passing elements 12. This allows the detection sensor to detect the force exerted by the bobbin thread on the conductor elements in real time. This also facilitates the layout of the bobbin case and the bobbin thread delivery mechanism, facilitating adaptation to different layouts of the bobbin case and the bobbin thread delivery mechanism.

[0080] like Figure 3 、 Figure 4 As shown, the wire passing element 12 is a wire passing wheel;

[0081] Or as Figure 5 As shown, the wire-passing element 12 is a wire-passing rod;

[0082] Alternatively, the wire-passing element 12 is a wire-passing ring (not shown in the figure).

[0083] In one example, Figure 3 、 Figure 4 As shown, one of the two wire-passing elements 12 is located above the conductor element, and the other wire-passing element 12 is located below the conductor element.

[0084] In another example, the two wire-passing elements 12 are both located at a height higher than the conductor element, one of the wire-passing elements 12 is located on the left side of the conductor element, and the other wire-passing element 12 is located on the right side of the conductor element (not shown in the figure).

[0085] In the third example, the two wire-passing elements 12 are both located at a lower height than the conductor element, one of the wire-passing elements 12 is located on the left side of the conductor element, and the other wire-passing element 12 is located on the right side of the conductor element (not shown in the figure).

[0086] Specific embodiment 4: The rest of the structure of this embodiment refers to specific embodiment 1, specific embodiment 2 or specific embodiment 3, except that:

[0087] like Figure 1 As shown, an automatic thread tension detection device for adjusting the bobbin thread tension also includes a display 8. Display 8 is electrically connected to detection sensor 3. Thus, during the process of adjusting the bobbin thread tension, the force detected by detection sensor 3 can be displayed on display 8, allowing the operator to directly observe the force exerted by the bobbin thread on the conductor element 2. When detection sensor 3 detects that the force exerted by the bobbin thread on the conductor element 2 falls within a set value range, the operator stops loosening or tightening the adjustment screw, thereby facilitating accurate adjustment of the bobbin thread tension.

[0088] Of course, it should be noted that an online detection and adjustment device for thread pressure can also be provided without the display 8, and instead use a signal indicator light to prompt the operator (not shown in the figure). For example, while the operator is adjusting the bobbin tension by slowly loosening or tightening the adjustment screw on the bobbin case, when the detection sensor 3 detects that the force exerted by the bobbin on the thread guide element 2 is within a set value range, the signal indicator light will illuminate or turn green, prompting the operator to stop loosening or tightening the adjustment screw, as the bobbin tension has reached the set value.

[0089] Specific embodiment 5: The rest of the structure of this embodiment refers to specific embodiment 1 or specific embodiment 2 or specific embodiment 3 or specific embodiment 4, the difference is that:

[0090] like Figure 1-Figure 4 As shown, an automatic thread tension detection device for adjusting bobbin thread tension also includes a bobbin thread accumulator 11. The bobbin thread accumulator 11 is detachably and rotatably mounted on a bracket 1. The bobbin thread accumulator 11 is provided with a plurality of bobbin case storage stations 9 evenly distributed around the circumference. Bobbin cases 10 are stored in the bobbin case storage stations 9 (each bobbin case storage station 9 stores a bobbin case). This allows the tension of the bobbin thread in each bobbin case storage station 9 on the bobbin thread accumulator 11 to be adjusted sequentially (i.e., the tension of the bobbin thread in each bobbin case storage station 9 is adjusted one bobbin case at a time).

[0091] In this embodiment, the specific method and structure of the bobbin case storage station 9 are prior art, and its specific structure is not the invention of this application, so this application will not elaborate on the specific structure of the bobbin case storage station 9.

[0092] Specifically, the bracket 1 is further provided with a mounting plate. The mounting plate is rotatably mounted on the bracket 1. The bottom thread storage tray 11 is detachably mounted on the mounting plate. For example, the storage tray is mounted on the mounting plate with bolts, or the storage tray is connected to the mounting plate by magnets, or the mounting plate is mounted on the mounting plate with a snap. The storage tray and the mounting plate are positioned together by a pin and a pin hole. The rotation axis of the storage tray is coaxial with the rotation axis of the mounting plate.

[0093] In one embodiment, Figure 1 As shown, the bottom thread storage tray 11 is rotated by manual drive, and there is no need to set a tray motor to drive the bottom thread storage tray to rotate, which can reduce costs.

[0094] In one example, one of the mounting plate and bracket 1 is equipped with a ball-end screw, while the other is equipped with several positioning slots that mate with the ball-end screw. The positioning slots correspond one-to-one with the bobbin case storage positions 9 on the bobbin accumulator tray 11. When the operator manually rotates the bobbin accumulator tray 11, the ball of the ball-end screw cooperates with the positioning slots to limit the position of the bobbin accumulator tray 11, preventing it from rotating while adjusting the bobbin tension.

[0095] In another example, a tightening bolt is provided on one of the mounting plate and the bracket 1. After the bottom line storage plate 11 is rotated into place, the mounting plate is fixed to the bracket 1 by locking the tightening bolt to prevent the bottom line storage plate 11 from rotating during the process of adjusting the bottom line tightness.

[0096] In another embodiment, Figure 3 As shown, a tray motor 13 is provided on the bracket, and the bottom thread storage tray 11 is driven to rotate by the tray motor. Specifically, the output shaft of the tray motor is connected to the rotating shaft of the mounting plate, and the tray motor drives the mounting plate to rotate, thereby driving the bottom thread storage tray 11 to rotate.

[0097] Specific embodiment 6: The rest of the structure of this embodiment refers to specific embodiment 1 or specific embodiment 2 or specific embodiment 3 or specific embodiment 4, the difference is that:

[0098] In this embodiment, Figure 6 As shown, the bracket 1 is provided with a bobbin case storage station 9, in which bobbin cases 10 are stored (each bobbin case storage station 9 stores one bobbin case). Thus, when adjusting the tension of the bobbin thread, the bobbin case can be stored in the bobbin case storage station 9, and then the bobbin thread in the bobbin case can be discharged by the bobbin thread discharge mechanism 5, facilitating the actual operation.

[0099] In this article, the specific method and structure of the bobbin case storage station 9 are prior art, and its specific structure is not the invention point of this application, so this application will not elaborate on the specific structure of the bobbin case storage station 9.

[0100] In one example, there is one bobbin case storage station 9 .

[0101] In another example, there are multiple bobbin case storage stations 9, and the multiple bobbin case storage stations 9 can be arranged in one row, or in multiple rows as needed.

[0102] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation of the above embodiment based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. An automatic thread tension detection device for adjusting the tension of a bobbin thread, characterized in that: include: Bracket; A conductor element, wherein a detection sensor is provided between the conductor element and the bracket; The bobbin case is fed with the bobbin thread through the bobbin thread feeding mechanism. During the feeding process, the bobbin thread goes around the wire element, so that the detection sensor is compressed or pulled.

2. The automatic thread tension detection device for adjusting the bottom thread tension according to claim 1, characterized in that: The bottom line output mechanism includes a line delivery wheel and a rotation drive mechanism for driving the line delivery wheel to rotate, and the rotation drive mechanism is arranged on the bracket.

3. The automatic thread tension detection device for adjusting the bottom thread tension according to claim 2, characterized in that: The bottom thread output mechanism further comprises a line pressing wheel and an elastic element. The line pressing wheel is pressed against the line feeding wheel under the action of the elastic element, and the bottom thread passes between the line feeding wheel and the line pressing wheel.

4. The automatic thread tension detection device for adjusting the bottom thread tension according to claim 3, characterized in that: The bottom line output mechanism also includes a swing arm, which is rotatably arranged on the bracket. The line pressing wheel is rotatably arranged on the swing arm. The elastic element drives the swing arm to rotate so that the line pressing wheel presses against the line feeding wheel.

5. The automatic thread tension detection device for adjusting the bottom thread tension according to claim 1, characterized in that: The bottom line output mechanism includes: A bottom line fixing piece, on which the bottom line is fixed; The moving actuator arranged on the bracket drives the bottom thread fixing member to move, thereby outputting the bottom thread in the bobbin case.

6. The automatic thread tension detection device for adjusting the bottom thread tension according to claim 5, characterized in that: The mobile actuator includes a belt transmission mechanism and a driving motor for driving the belt transmission mechanism, and the bottom line fixing member is fixed on the conveyor belt of the belt transmission mechanism.

7. The automatic thread tension detection device for adjusting the bottom thread tension according to claim 5, characterized in that: The mobile actuator is a pneumatic cylinder, an electric cylinder or a linear module.

8. The automatic thread tension detection device for adjusting the bottom thread tension according to claim 5, characterized in that: The mobile actuator includes a driving motor, a gear and a sliding rack, the gear is meshed with the rack, the driving motor drives the gear to rotate, and the bottom line fixing piece is fixed on the rack.

9. The automatic thread tension detection device for adjusting the bottom thread tension according to claim 5, characterized in that: The mobile actuator comprises a driving motor and a swing arm, wherein the swing arm is fixed on the output shaft of the driving motor, and the bottom line fixing piece is fixed on the swing arm.

10. The automatic thread tension detection device for adjusting the tension of the bottom thread according to any one of claims 5 to 9, characterized in that: The bottom thread fixing member includes a wire clamp or a connecting rod or a connecting ring or a connecting hole or a connecting hook for fixing and connecting the bottom thread.

11. The automatic thread tension detection device for adjusting the tension of the bottom thread according to any one of claims 1 to 9, characterized in that: When the lower thread goes around the conductor element, the lower threads on both sides of the conductor element are distributed at a set angle.

12. The automatic thread tension detection device for adjusting the bottom thread tension according to claim 11, characterized in that: The bracket is also provided with two thread-passing elements. When the bottom thread in the bobbin case is output through the bottom thread output mechanism, the bottom thread passes around one of the thread-passing elements, the conductor element and the other thread-passing element in sequence, and the bottom thread between the conductor element and the two thread-passing elements is distributed in a V shape.

13. The automatic thread tension detection device for adjusting the tension of the bottom thread according to any one of claims 1 to 9, characterized in that: The bracket is provided with a bobbin case storage station, and the bobbin case is stored in the bobbin case storage station, and the number of the bobbin case storage station is one or more.

14. The automatic thread tension detection device for adjusting the tension of the bottom thread according to any one of claims 1 to 9, characterized in that: It also includes a bottom thread storage tray, which is detachably and rotatably arranged on the bracket. The bottom thread storage tray is provided with a plurality of bobbin case storage stations distributed in sequence in the circumferential direction, and the bobbin cases are stored in the bobbin case storage stations.

15. The automatic thread tension detection device for adjusting the tension of the bottom thread according to claim 14, characterized in that: The bottom thread storage tray is rotated by manual drive; Alternatively, a material tray motor is provided on the bracket, and the bottom thread storage tray is driven to rotate by the motor.

16. The automatic thread tension detection device for adjusting the tension of the bottom thread according to any one of claims 1 to 9, characterized in that: The device also includes a display, which is electrically connected to the detection sensor.

17. The automatic thread tension detection device for adjusting the tension of the bottom thread according to any one of claims 1 to 9, characterized in that: The conductor element is a conductor wheel, a conductor shaft, a conductor ring, or a guide block provided with a conductor groove.

18. The automatic thread tension detection device for adjusting the tension of the bottom thread according to any one of claims 1 to 9, characterized in that: It also includes a sensor support and a wire support. The sensor support is connected to the bracket, the detection sensor is arranged on the sensor support, the wire support is connected to the detection sensor, and the wire element is arranged on the wire support.

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