A deviation correcting device of a sewing machine and a sewing machine

Abstract

The application provides a deviation rectifying device of a sewing machine and the sewing machine, and belongs to the technical field of sewing equipment. The deviation rectifying device comprises a controller and a rack. The rack is provided with a connecting rod mechanism and a sensor for detecting whether the fabric edge deviates. The connecting rod mechanism is provided with a roller. The rack is further provided with a driving mechanism one for driving the connecting rod mechanism to swing and a driving mechanism two for driving the roller to rotate. The driving mechanism one and the sensor are electrically connected with the controller respectively. The deviation rectifying device can automatically detect whether the fabric deviates and rectify the deviation in real time. The deviation rectifying device has high automation degree, is convenient to operate and has high deviation rectifying speed.

Description

Technical Field

[0001] This invention belongs to the field of sewing equipment technology, and relates to a sewing machine correction device and a sewing machine. Background Technology

[0002] In the production of some garments that involve rolled hem fabric, the ends of the rolled fabric need to be folded inward and sewn together. In traditional hand sewing, the fabric can only be sorted and sewn at the same time, which is not only inefficient but also requires a high level of skill from the operators.

[0003] Patent document with application number 201921780687.X discloses an automatic circular hem sewing machine correction device. Its shortcoming is that it cannot automatically detect whether the fabric has shifted, and it needs to rely on the sensors installed on the sewing machine for detection, which is inconvenient to operate and has a low degree of automation. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the prior art, the present invention provides a sewing machine correction device. The technical problem to be solved by the present invention is: how to automatically correct the deviation.

[0005] The objective of this invention can be achieved through the following technical solutions: A sewing machine correction device, comprising a controller and a frame, characterized in that the frame is provided with a linkage mechanism and a sensor for detecting whether the fabric edge is offset, the linkage mechanism is provided with a roller, and the frame is also provided with a drive mechanism one for driving the linkage mechanism to swing and a drive mechanism two for driving the roller to rotate, the drive mechanism one and the sensor being electrically connected to the controller respectively.

[0006] Its working principle is as follows: When this correction device is working, the second drive mechanism drives the roller to rotate, and the roller drives the fabric to move forward to achieve feeding. When the sensor detects the edge of the fabric to deviate, the sensor sends a detection signal to the controller. The controller sends a signal to the first drive mechanism, and the first drive mechanism drives the linkage mechanism to swing. The roller on the linkage mechanism swings accordingly, and the feeding direction of the roller after swinging changes accordingly, thereby correcting the fabric.

[0007] This web-correcting device automatically detects whether the moving fabric is misaligned using sensors and immediately transmits the detection signal to the drive mechanism. Upon receiving the signal, the drive mechanism immediately drives the linkage mechanism, thereby changing the feeding direction of the rollers. Whenever the fabric deviates, the correction device repeats the above actions until the fabric no longer deviates. This web-correcting device automatically detects whether the fabric is misaligned and corrects it in real time, offering a high degree of automation, convenient operation, and fast correction speed.

[0008] In the aforementioned sewing machine correction device, a base plate is provided on the frame, a drive mechanism includes a motor, the motor is fixed on the base plate, a connecting rod is mounted on the output shaft of the motor, and the connecting rod mechanism includes a connecting rod, the connecting rod is connected to the connecting rod.

[0009] When the motor rotates, its output shaft drives the first connecting rod to rotate. The first connecting rod drives the connecting rod mechanism to swing through the second connecting rod, thereby causing the rollers mounted on the connecting rod mechanism to swing, thus correcting the fabric.

[0010] In the aforementioned sewing machine correction device, the linkage mechanism includes linkage three, linkage four, linkage five, and linkage six. Linkage three, linkage four, linkage five, and linkage six are sequentially hinged together and form a quadrilateral. Linkage two is respectively hinged to linkage four and linkage six, and the roller is mounted on linkage three and / or linkage five.

[0011] Links three, four, five, and six form a planar four-bar linkage. When motor one rotates, link one drives the planar four-bar linkage to swing through link two. At this time, links three and five swing, and the rollers installed on links three and five also swing, thus correcting the fabric deviation.

[0012] In other embodiments, the roller may also be mounted on link three or link five.

[0013] In the above-mentioned sewing machine correction device, the second drive mechanism includes two rotating shafts, which are located below the first base plate and are parallel to each other. A first synchronous wheel is installed on each rotating shaft, and a first synchronous belt is installed between the first synchronous wheels. The first synchronous belt is in contact with the roller. The second drive mechanism also includes a drive source for driving the rotating shafts to rotate.

[0014] The drive source drives a rotating shaft to rotate, which drives another rotating shaft to rotate via a timing pulley and a timing belt. At the same time, the timing belt drives a roller to rotate, and the roller moves the fabric forward, thus achieving feeding.

[0015] In the aforementioned sewing machine correction device, the drive source includes a second motor, and a second synchronous pulley is respectively installed on the output shaft of the second motor and on the two rotating shafts, and a second synchronous belt is connected between the second synchronous pulleys.

[0016] In this structure, motor two drives two rotating shafts to rotate through synchronous pulley two and synchronous belt two. At the same time, synchronous belt one drives the roller to rotate, and the roller drives the fabric to move forward, thus realizing feeding.

[0017] In another embodiment, the drive source includes a second motor, the output shaft of which is connected to a rotating shaft. In this structure, the second motor directly drives the rotating shaft to rotate.

[0018] In the above-mentioned sewing machine correction device, two fixed plates are installed on the lower part of the base plate, the fixed plates are arranged opposite to each other, and two sliders are slidably connected to each fixed plate. The rotating shaft is located between the fixed plates and the ends of the rotating shaft are respectively installed on one of the sliders. A spring is connected between each slider and the base plate. When the timing belt abuts against the roller, the spring is in a compressed state.

[0019] When the timing belt on the rotating shaft comes into contact with the roller, each spring is in a compressed state. Each spring exerts a downward elastic force on the rotating shaft through the corresponding slider. This structure allows the timing belt to make elastic contact with the roller, and the timing belt to elastically press the roller together, making the contact force between the two more appropriate. The timing belt can drive the roller to rotate, but the resistance when the roller rotates is not too great, making the feeding smoother.

[0020] In the aforementioned sewing machine correction device, a mounting plate is provided below the base plate, and an air guide pipe is provided on the mounting plate.

[0021] After the air tube is connected to the air source, air can be blown onto the fabric to make it move more smoothly.

[0022] In the aforementioned sewing machine correction device, a bracket is installed on the base plate, and the sensor is detachably installed on the base plate.

[0023] The sensor can be detachably mounted on the base plate via a bracket, making assembly and disassembly more convenient.

[0024] In the aforementioned sewing machine correction device, the roller is a rubber-coated roller.

[0025] In the above-mentioned sewing machine correction device, a guide rod is fixed on the base plate, a slider is slidably connected to the guide rod, a base plate is fixed on the slider, a connecting plate is installed on the upper half of the guide rod, a connector is installed on the connecting plate, and a cylinder is installed on the lower part of the connector.

[0026] The present invention also provides a sewing machine, which includes any of the above-described corrective devices.

[0027] Compared with the prior art, the advantages of the present invention are as follows: 1. This correction device automatically detects whether the fabric is off-center and corrects it in real time. It is highly automated, easy to operate, and has a fast correction speed.

[0028] 2. The timing belt of this correction device makes elastic contact with the roller, and the timing belt clamps the roller elastically. The timing belt can drive the roller to rotate, but the resistance when the roller rotates is not too great, making the feeding smoother. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the correction device; Figure 2 This is a schematic diagram of the second drive mechanism; Figure 3 This is a schematic diagram of a linkage mechanism.

[0030] In the diagram: 1. Frame, 2. Linkage mechanism, 3. Sensor, 4. Roller, 5. Drive mechanism one, 6. Drive mechanism two, 7. Base plate one, 8. Motor one, 9. Link one, 10. Link two, 11. Link three, 12. Link four, 13. Link five, 14. Link six, 15. Shaft, 16. Synchronous pulley one, 17. Synchronous belt one, 18. Drive source, 19. Motor two, 20. Synchronous pulley two, 21. Synchronous belt two, 22. Fixing plate, 23. Slider one, 24. Spring, 25. Mounting plate, 26. Air guide pipe, 27. Bracket, 28. Guide rod, 29. Slider two, 30. Base plate two, 31. Connecting plate, 32. Connector, 33. Cylinder. Detailed Implementation

[0031] The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] like Figure 1 As shown, this correction device includes a controller (not shown) and a frame 1. The frame 1 is equipped with a linkage mechanism 2 and a sensor 3 for detecting whether the fabric edge is offset. The linkage mechanism 2 is equipped with a roller 4. The frame 1 is also equipped with a drive mechanism 5 for driving the linkage mechanism 2 to swing and a drive mechanism 6 for driving the roller 4 to rotate. The drive mechanism 5 and the sensor 3 are electrically connected to the controller.

[0033] When this correction device is working, the second drive mechanism 6 drives the roller 4 to rotate, and the roller 4 moves the fabric forward to achieve feeding. When the sensor 3 detects the edge of the fabric to deviate, the sensor 3 sends a detection signal to the controller. The controller sends a signal to the first drive mechanism 5, and the first drive mechanism 5 drives the linkage mechanism 2 to swing. The roller 4 on the linkage mechanism 2 swings accordingly, and the feeding direction of the roller 4 after swinging changes accordingly, thereby correcting the fabric.

[0034] As one embodiment, roller 4 is a rubber-coated roller.

[0035] like Figure 1 and 3 As shown, in this embodiment, a base plate 7 is provided on the frame 1, and the drive mechanism 5 includes a motor 8, which is fixed on the base plate 7. A connecting rod 9 is installed on the output shaft of the motor 8, and the linkage mechanism 2 includes a connecting rod 10, with the connecting rod 9 connected to the connecting rod 10.

[0036] When motor 8 rotates, its output shaft drives connecting rod 9 to rotate. Connecting rod 9 drives connecting rod mechanism 2 to swing through connecting rod 10, thereby causing roller 4 mounted on connecting rod mechanism 2 to swing and thus correct the fabric deviation.

[0037] like Figure 3 As shown, in this embodiment, the linkage mechanism 2 includes linkage 3 11, linkage 4 12, linkage 5 13 and linkage 6 14. Linkage 3 11, linkage 4 12, linkage 5 13 and linkage 6 14 are sequentially hinged to form a quadrilateral. Linkage 2 10 is respectively hinged to linkage 4 12 and linkage 6 14. Roller 4 is installed on linkage 3 11 and linkage 5 13.

[0038] Link 3 11, link 4 12, link 5 13 and link 6 14 form a planar four-bar linkage 2. When motor 1 8 rotates, link 1 9 drives the planar four-bar linkage 2 to swing through link 2 10. At this time, link 3 11 and link 5 13 swing, and the rollers 4 installed on link 3 11 and link 5 13 also swing, thereby correcting the fabric.

[0039] In other embodiments, roller 4 may also be mounted on link 3 11 or link 5 13.

[0040] like Figure 1 and 2 As shown, in this embodiment, the second drive mechanism 6 includes two rotating shafts 15, which are located below the first base plate 7 and are parallel to each other. A synchronous wheel 16 is installed on each rotating shaft 15, and a synchronous belt 17 is installed between the synchronous wheels 16. The synchronous belt 17 is in contact with the roller 4. The second drive mechanism 6 also includes a drive source 18 for driving the rotating shafts 15 to rotate.

[0041] The drive source 18 drives a rotating shaft 15 to rotate. The rotating shaft 15 drives another rotating shaft 15 to rotate through a synchronous pulley 16 and a synchronous belt 17. At the same time, the synchronous belt 17 drives the roller 4 to rotate. The roller 4 drives the fabric to move forward, thus realizing the feeding.

[0042] like Figure 2 As shown, in this embodiment, the drive source 18 includes a second motor 19, and a second synchronous pulley 20 is respectively installed on the output shaft of the second motor 19 and on two rotating shafts 15. A second synchronous belt 21 is connected between the second synchronous pulleys 20.

[0043] In this structure, motor 219 drives two rotating shafts 15 to rotate through synchronous pulley 20 and synchronous belt 21. At the same time, synchronous belt 17 drives roller 4 to rotate, and roller 4 drives the fabric to move forward, thus realizing feeding.

[0044] In another embodiment, the drive source 18 includes a second motor 19, the output shaft of which is connected to a rotating shaft 15. In this configuration, the second motor 19 directly drives the rotating shaft 15 to rotate.

[0045] like Figure 1 As shown, in this embodiment, two fixing plates 22 are installed on the lower part of the base plate 7. The fixing plates 22 are arranged opposite to each other. Two sliders 23 are slidably connected to each fixing plate 22. The rotating shaft 15 is located between the fixing plates 22 and the ends of the rotating shaft 15 are respectively installed on one slider 23. A spring 24 is connected between each slider 23 and the base plate 7. When the timing belt 17 abuts against the roller 4, the spring 24 is in a compressed state.

[0046] When the timing belt 17 on the rotating shaft 15 abuts against the roller 4, each spring 24 is in a compressed state. Each spring 24 exerts a downward elastic force on the rotating shaft 15 through the corresponding slider. This structure allows the timing belt 17 to make elastic contact with the roller 4. The timing belt 17 elastically presses the roller 4, making the contact force between the two more appropriate. The timing belt 17 can drive the roller 4 to rotate, but the resistance when the roller 4 rotates is not too great, making the feeding smoother.

[0047] like Figure 1 As shown in this embodiment, a mounting plate 25 is provided below the base plate 7, and an air guide pipe 26 is provided on the mounting plate 25. After the air guide pipe 26 is connected to an air source, air can be blown onto the fabric to make the fabric move more smoothly.

[0048] like Figure 1 As shown in this embodiment, a bracket 27 is installed on the base plate 7, and the sensor 3 is detachably installed on the base plate 7. The sensor 3 is detachably installed on the base plate 7 via the bracket 27, making assembly and disassembly more convenient.

[0049] like Figure 1 As shown, in this embodiment, a guide rod 28 is fixed on the base plate 7, a slider 29 is slidably connected to the guide rod 28, a base plate 30 is fixed on the slider 29, a connecting plate 31 is installed on the upper half of the guide rod 28, a connector 32 is installed on the connecting plate 31, and a cylinder 33 is installed on the lower part of the connector 32.

[0050] The present invention also provides a sewing machine that includes any of the above-described corrective devices.

[0051] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A sewing machine correction device, the correction device comprising a controller and a frame (1), characterized in that, The frame (1) is provided with a linkage mechanism (2) and a sensor (3) for detecting whether the fabric edge is offset. The linkage mechanism (2) is provided with a roller (4). The frame (1) is also provided with a drive mechanism one (5) for driving the linkage mechanism (2) to swing and a drive mechanism two (6) for driving the roller (4) to rotate. The drive mechanism one (5) and the sensor (3) are electrically connected to the controller. The frame (1) is provided with a base plate one (7). The drive mechanism one (5) includes a motor one (8). The motor one (8) is fixed on the base plate one (7). A connecting rod one (9) is installed on the output shaft of the motor one (8). The linkage mechanism (2) includes a connecting rod two (10). The connecting rod one (9) is connected to the connecting rod two (10). The linkage mechanism (2) includes a connecting rod three (11), a connecting rod four (12), and a connecting rod four (13). Link 5 (13) and Link 6 (14), Link 3 (11), Link 4 (12), Link 5 (13) and Link 6 (14) are hinged together in sequence and form a quadrilateral. Link 2 (10) is hinged on Link 4 (12) and Link 6 (14) respectively. Roller (4) is installed on Link 3 (11) and / or Link 5 (13). Drive mechanism 2 (6) includes two rotating shafts (15). The rotating shafts (15) are located below the base plate 1 (7) and are parallel to each other. Synchronous wheel 1 (16) is installed on each rotating shaft (15). Synchronous belt 1 (17) is installed between the synchronous wheels 1 (16). The synchronous belt 1 (17) is in contact with the roller (4). The synchronous belt 1 (17) elastically presses the roller (4). Drive mechanism 2 (6) also includes a drive source (18) that drives the rotating shafts (15) to rotate.

2. The sewing machine correction device according to claim 1, characterized in that, The drive source (18) includes a second motor (19), and a second synchronous pulley (20) is installed on the output shaft of the second motor (19) and on the two rotating shafts (15), and a second synchronous belt (21) is connected between the second synchronous pulleys (20).

3. A sewing machine correction device according to claim 1 or 2, characterized in that, Two fixing plates (22) are installed on the lower part of the base plate (7). The fixing plates (22) are arranged opposite to each other. Two sliders (23) are slidably connected on each fixing plate (22). The rotating shaft (15) is located between the fixing plates (22) and the end of the rotating shaft (15) is respectively installed on one of the sliders (23). A spring (24) is connected between each slider (23) and the base plate (7). When the timing belt (17) abuts against the roller (4), the spring (24) is in a compressed state.

4. A sewing machine correction device according to claim 1 or 2, characterized in that, An installation plate (25) is provided below the base plate (7), and an air guide pipe (26) is provided on the installation plate (25).

5. A sewing machine correction device according to claim 1 or 2, characterized in that, A bracket (27) is installed on the base plate (7), and the sensor (3) is detachably installed on the base plate (7).

6. A sewing machine correction device according to claim 1 or 2, characterized in that, A guide rod (28) is fixed on the base plate (7). A slider (29) is slidably connected to the guide rod (28). A base plate (30) is fixed on the slider (29). A connecting plate (31) is installed on the upper half of the guide rod (28). A connector (32) is installed on the connecting plate (31). A cylinder (33) is installed on the lower part of the connector (32).

7. A sewing machine, characterized in that, The sewing machine includes a correction device as described in any one of claims 1-6.

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