Sewing machine and automatic rotating mechanism for edge covering of sewing machine

Abstract

The automatic rotating mechanism comprises a fixing roller, a tensioning assembly and an abutting assembly, the tensioning assembly comprises a connecting plate, a first tensioning roller and a first driving part, the connecting plate is connected to a sewing machine in a sliding mode, the first tensioning roller is rotationally connected to the connecting plate, the first driving part drives the connecting plate to move, and the abutting assembly abuts against the fixing roller. The abutting assembly comprises a rotating arm, an abutting roller, a second driving part and a third driving part, the rotating arm is rotationally connected to the sewing machine, the abutting roller is rotationally connected to the rotating arm, the second driving part drives the rotating arm to rotate to be close to or away from the fixed roller, and the third driving part drives the abutting roller to rotate. When the binding pocket is processed, a worker only needs to sleeve a cloth bag and a cloth strip, the operation is simple and convenient, the production efficiency is high, both green hands and old people can operate the binding pocket, and recruitment is easy.

Description

Technical Field

[0001] This application relates to the field of sewing equipment, and more particularly to a sewing machine and its automatic rotating mechanism for hemming. Background Technology

[0002] In mobile phone manufacturing factories, drawstring bags are used when transporting mobile phones. Placing the mobile phone in the drawstring bag before transportation can prevent the surface of the mobile phone from being scratched. The drawstring bag has a drawstring at the end, which can be pulled to tighten the opening of the drawstring bag and prevent the mobile phone from slipping out.

[0003] In the actual production of drawstring bags, the fabric strip is usually folded in half, the end of the bag is inserted into the folded fabric strip, and then the bag is moved while pressing down on the fabric strip so that the sewing machine sews the fabric strip and the bag together, so that the drawstring can be located inside the seam. This operation is meticulous, has low production efficiency, and requires skilled workers, who are scarce and difficult to recruit. Utility Model Content

[0004] To address the aforementioned problems, this application provides a sewing machine and its automatic rotating mechanism for edging.

[0005] In a first aspect, this application provides an automatic rotating mechanism for edge binding, which adopts the following technical solution:

[0006] An automatic rotating mechanism for hemming includes a fixed roller, a tensioning assembly, and a clamping assembly. The fixed roller is mounted on a sewing machine. The tensioning assembly includes a connecting plate, a tensioning roller, and a driving member. The connecting plate is slidably connected to the sewing machine and moves closer to or away from the fixed roller. The tensioning roller is rotatably connected to the connecting plate. The driving member is mounted on the sewing machine and drives the connecting plate to move. The clamping assembly includes a rotating arm, a clamping roller, a driving member, and a driving member. The rotating arm is rotatably connected to the sewing machine, and the clamping roller is rotatably connected to the rotating arm. The driving members are mounted on the sewing machine. The driving member drives the rotating arm to rotate closer to or away from the fixed roller, and the driving member drives the clamping roller to rotate.

[0007] By adopting the above technical solution, when processing drawstring bags, the first drive unit drives the connecting plate to move closer to the fixed roller. Then, the cloth bag is placed on the outside of the fixed roller and the first tension roller, and the cloth strip is placed. Next, the first drive unit drives the connecting plate to move away from the fixed roller, so that the first tension roller opens and tightens the cloth bag. Then, the second drive unit drives the rotating arm to rotate closer to the fixed roller, so that the pressing roller presses against the cloth bag on the fixed roller. The third drive unit drives the pressing roller to rotate. Thus, when the sewing machine sews the cloth bag and the cloth strip, the frictional resistance between the pressing roller and the cloth bag drives the cloth bag to rotate, thereby completing the sewing of the drawstring bag. The worker only needs to put the cloth bag and the cloth strip on. The operation is simple and convenient, the production efficiency is high, and it can be operated by novices and the elderly, making it easy to recruit workers.

[0008] Optionally, the tensioning assembly further includes a second tensioning roller, which is located on the side of the fixed roller away from the rotating arm and is rotatably connected to the sewing machine.

[0009] By adopting the above technical solution and setting tension roller two, when processing the drawstring bag, the cloth bag is placed on the outside of the fixed roller, tension roller one and tension roller two. Then, the drive component one drives the connecting plate to move away from the fixed roller, so that tension roller one opens and tightens the cloth bag, reducing the contact area between the fixed roller and the cloth bag, thereby reducing the friction between the fixed roller and the cloth bag, which is conducive to the cloth bag rotating under the rotation of the tension roller.

[0010] Optionally, the fixed roller is provided with a relief groove, into which the tensioning roller is inserted.

[0011] By adopting the above technical solution and setting a clearance groove, the fixed roller and the tension roller are more compact, so that the cloth bag can be fitted onto the fixed roller and the tension roller.

[0012] Optionally, the cross-sectional area of ​​the tension roller cut vertically gradually increases in the direction away from the sewing machine.

[0013] By adopting the above technical solution, when the tensioning roller moves away from the fixed roller and stretches the bag, it can hook the bag, reducing the chance of the bag coming off during the sewing process.

[0014] Secondly, this application provides a sewing machine including the aforementioned automatic rotating mechanism for edging.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. When processing drawstring bags, workers only need to put the cloth bag and cloth strip on. The operation is simple and convenient, with high production efficiency. It can be operated by novices and the elderly, and it is easy to recruit workers.

[0017] 2. By setting tension roller two, the contact area between the fixed roller and the cloth bag is reduced, which is beneficial for the cloth bag to rotate under the rotation of the tension roller;

[0018] 3. By setting a clearance groove, the fixed roller and the tension roller are more compact, so that the cloth bag can be fitted onto the fixed roller and the tension roller. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of an embodiment of this application.

[0020] Figure 2 for Figure 1 The enlarged view of section A mainly shows the structure of the tensioning assembly.

[0021] Explanation of reference numerals in the attached drawings: 1. Fixed roller; 11. Relief groove; 2. Tensioning assembly; 21. Connecting plate; 22. Tensioning roller one; 23. Tensioning roller two; 24. Driving component one; 3. Pressing assembly; 31. Rotating arm; 32. Pressing roller; 33. Driving component two; 34. Driving component three. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0023] This application discloses a sewing machine. See also... Figure 1-2 The sewing machine includes an automatic rotating mechanism for hemming. The automatic rotating mechanism for hemming includes a fixed roller 1, a tensioning assembly 2, and a clamping assembly 3. The fixed roller 1 is fixed to the sewing machine and is horizontally arranged. The tensioning assembly 2 includes a connecting plate 21, a tensioning roller 22, a tensioning roller 23, and a driving component 24. The connecting plate 21 is located below the fixed roller 1 and is slidably connected to the sewing machine. The connecting plate 21 can move closer to or away from the fixed roller 1. The tensioning roller 22 is located on the side of the connecting plate 21 away from the sewing machine and is rotatably connected to the connecting plate 21. The rotation axis of the tensioning roller 22 is horizontally arranged and parallel to the length direction of the fixed roller 1. The cross-sectional area of ​​the tensioning roller 22 cut vertically gradually increases in the direction away from the sewing machine.

[0024] See Figure 1-2 The drive component 24 is located below the connecting plate 21 and fixed to the sewing machine. The piston rod of the drive component 24 is fixedly connected to the connecting plate 21. The drive component 24 drives the connecting plate 21 to move. The connecting plate 21 is slidably connected to the sewing machine through cooperation with the drive component 24. In this embodiment, the drive component 24 is a cylinder.

[0025] See Figure 1-2 A clearance groove 11 is provided on the outer side wall of the fixed roller 1. The clearance groove 11 is located on the side of the fixed roller 1 near the connecting plate 21, and the clearance groove 11 is for the tension roller 22 to be inserted.

[0026] See Figure 1-2 Tensioner roller 23 is located on the side of the sewing machine closest to the fixed roller 1 and on the side of the fixed roller 1 along the horizontal direction. Tensioner roller 23 is rotatably connected to the sewing machine, and the rotation axis of tensioner roller 23 is parallel to the rotation axis of tensioner roller 22.

[0027] See Figure 1-2 The clamping assembly 3 includes a rotating arm 31, a clamping roller 32, a second driving member 33, and a third driving member 34. The rotating arm 31 is located on the side of the sewing machine closer to the fixed roller 1 and on the side of the fixed roller 1 away from the second tension roller 23. The rotating arm 31 is rotatably connected to the sewing machine, and the rotation axis of the rotating arm 31 is parallel to the rotation axis of the first tension roller 22. The second driving member 33 is hinged to the sewing machine, and the hinge axis of the second driving member 33 is parallel to the rotation axis of the first tension roller 22. The piston rod of the second driving member 33 is rotatably connected to the rotating arm 31, and the rotation axis of the piston rod of the second driving member 33 and the rotating arm 31 is parallel to the hinge axis of the second driving member 33 and the sewing machine. The second driving member 33 drives the rotating arm 31 to rotate through the telescopic piston rod, so that the rotating arm 31 rotates closer to or away from the fixed roller 1. In this embodiment, the second driving member 33 is a cylinder.

[0028] See Figure 1-2 The pressing roller 32 is located at the end of the rotating arm 31 away from the rotation axis and is rotatably connected to the rotating arm 31. The rotation axis of the pressing roller 32 is parallel to the rotation axis of the tensioning roller 22. The driving component 34 is mounted on the sewing machine. In this embodiment, the driving component 34 includes a motor, a transmission wheel 1, a transmission wheel 2, and a belt. The motor is fixed on the sewing machine. Both the transmission wheel 1 and the transmission wheel 2 are located inside the rotating arm 31. The transmission wheel 1 is coaxially fixed on the output shaft of the motor. The transmission wheel 2 and the pressing roller 32 are coaxially fixed. The belt is tensioned on the outside of the transmission wheel 1 and the transmission wheel 2. The motor drives the transmission wheel 1 to rotate. The transmission wheel 1 drives the transmission wheel 2 and the pressing roller 32 to rotate through the belt. That is, the driving component 34 drives the pressing roller 32 to rotate through the belt drive structure.

[0029] The implementation principle of a sewing machine according to an embodiment of this application is as follows:

[0030] When processing the drawstring bag, the drive unit 24 drives the connecting plate 21 to move closer to the fixed roller 1, so that the tension roller 22 is engaged in the relief groove 11. Then, the bag is placed on the outside of the fixed roller 1, tension roller 22 and tension roller 23 and the fabric strip is placed. Next, the drive unit 24 drives the connecting plate 21 to move away from the fixed roller 1, so that the tension roller 22 opens and tightens the bag. Then, the drive unit 33 drives the rotating arm 31 to rotate closer to the fixed roller 1, so that the pressing roller 32 presses against the bag on the fixed roller 1. The drive unit 34 drives the pressing roller 32 to rotate. Thus, when the sewing machine sews the bag and the fabric strip, the frictional resistance between the pressing roller 32 and the bag drives the bag to rotate, thus completing the sewing of the drawstring bag. The worker only needs to put the bag and the fabric strip on. The operation is simple and convenient, the production efficiency is high, and novices and the elderly can operate it. It is easy to recruit workers.

[0031] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic rotating mechanism for edge covering, characterized by: The sewing machine includes a fixed roller (1), a tensioning assembly (2), and a clamping assembly (3). The fixed roller (1) is mounted on the sewing machine. The tensioning assembly (2) includes a connecting plate (21), a tensioning roller (22), and a driving component (24). The connecting plate (21) is slidably connected to the sewing machine and moves closer to or away from the fixed roller (1). The tensioning roller (22) is rotatably connected to the connecting plate (21). The driving component (24) is mounted on the sewing machine and drives the connecting plate (21). 21) Movement, the pressing assembly (3) includes a rotating arm (31), a pressing roller (32), a second driving member (33) and a third driving member (34). The rotating arm (31) is rotatably connected to the sewing machine, and the pressing roller (32) is rotatably connected to the rotating arm (31). The second driving member (33) and the third driving member (34) are located on the sewing machine. The second driving member (33) drives the rotating arm (31) to rotate closer to or away from the fixed roller (1), and the third driving member (34) drives the pressing roller (32) to rotate.

2. The automatic rotating mechanism for overedge sewing according to claim 1, characterized in that: The tensioning assembly (2) further includes a tensioning roller (23), which is located on the side of the fixed roller (1) away from the rotating arm (31) and is rotatably connected to the sewing machine.

3. The automatic rotating mechanism for overedge sewing according to claim 1, characterized in that: The fixed roller (1) is provided with a relief groove (11) for the tension roller (22) to be inserted into.

4. The automatic rotating mechanism for overedge sewing according to claim 1, characterized in that: The cross-sectional area of ​​the tension roller (22) cut vertically gradually increases in the direction away from the sewing machine.

5. A sewing machine characterized by: Includes the automatic rotating mechanism for edging as described in any one of claims 1-4 above.

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