An adjustable threader for a sewing machine

Abstract

The adjustable winding device for sewing machine, the output shaft of motor drives the rotating disc and the inserting shaft to rotate, the inserting shaft is used for inserting the bobbin, the recess is matched with the elastic pressing piece, the radial of the pressing piece is provided with the pressing arm, in winding, one end of the thread is pressed between the pressing arm and the matching surface by the elastic force to pull the thread; the pressing piece is provided with the bending line to divide the pressing piece into the first part and the second part, the second part is upwardly bent at the bending line to form the included angle relative to the first part, the adjusting screw is further arranged at both ends of the bending line, the adjusting screw is used for moving up and down to change the lifting state of the second part to adjust the included angle, the adjustable winding device realizes a new winding technical scheme, so that the unfavorable influence factors can be better coped with, and the structure is relatively simple.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and specifically to an adjustable winding device for sewing machines. Background Technology

[0002] Bottom thread is an important thread required for sewing, and it is used in large quantities. It is of great significance for ensuring the quality of sewing. When using bottom thread, it is necessary to first wind it around the bobbin. Therefore, it is necessary to study how to set up the winding device. Since the winding may be adversely affected by various factors, such as thread length, thread diameter, and wear and tear, the winding device needs to be studied in depth to better deal with these influencing factors.

[0003] This application proposes an adjustable winding device for sewing machines, realizing a new winding technology solution that is more conducive to better dealing with adverse factors, and has a relatively simple structure. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an adjustable winding device for sewing machines, thereby realizing a new winding technology solution, which is conducive to better dealing with adverse factors, and the structure is relatively simple.

[0005] The technical solution of this utility model is: an adjustable winding device for a sewing machine, including a motor, a rotating disk and a connecting shaft. The output shaft of the motor drives the rotating disk and the connecting shaft to rotate together. The connecting shaft is used to insert the bobbin. A recess is provided on the upper side of the rotating disk in the circumferential direction of the connecting shaft. An elastic pressure plate is fitted in the recess. A pressure arm is provided radially on the pressure plate. A mating surface that mates with the pressure arm is provided radially on the rotating disk. When winding, one end of the thread is elastically pressed between the pressure arm and the mating surface to hold the thread.

[0006] The tablet press is configured with a bending line to divide the tablet into a first part and a second part. The first part is fixed on a rotating disk, and the second part is bent upward at the bending line relative to the first part to form an angle. The second part is provided with the pressure arm, and there are also adjusting screws at both ends of the bending line. The adjusting screws are used to move up and down to change the tilted state of the second part to adjust the angle, thereby changing the fit between the pressure arm and the mating surface.

[0007] With the above structure, this utility model has the following advantages: In this disclosure, a specific pressure plate, a bending line, and an adjusting screw are used. The angle is adjusted by moving the adjusting screw up and down to change the tilting state of the second part, thereby changing the fit between the pressure arm and the mating surface. When the wire is thicker, the adjusting screw can be moved upward to reduce the angle, allowing the pressure arm and the mating surface to better press the thicker wire. Conversely, when the wire is thinner, the adjusting screw can be moved downward to increase the angle, allowing the pressure arm and the mating surface to better press the thinner wire. When wear and tear occurs due to prolonged use, such as insufficient elasticity, the adjusting screw can be adjusted downward. When the wire is clamped between the pressure arm and the mating surface, the second part is lifted more by the wire, thus increasing the elasticity of the second part relative to the first part, allowing the second part to better press the wire.

[0008] Therefore, this disclosure implements a new winding technology solution, which is conducive to better dealing with adverse factors and has a relatively simple structure.

[0009] In some embodiments, a cutting notch is provided on the pressure arm.

[0010] In some embodiments, the line connecting the pressure arm and the fastener fixing the first part bisects the bend line.

[0011] In some embodiments, the tablet is a circular sheet, and the tablet is provided with bending lines to divide the tablet into a semi-circular first part and a semi-circular second part.

[0012] In some embodiments, the first portion and the second portion are cut flat at the junction.

[0013] In some embodiments, the motor is provided with a protective cover around the circumference of the rotating disk. Attached Figure Description Figure 1 This is a three-dimensional schematic diagram of an adjustable winding device for a sewing machine disclosed herein.

[0014] Figure 2 This is a three-dimensional schematic diagram after the tablet compression is removed.

[0015] Figure 3 This is a three-dimensional schematic diagram of a tablet compression method disclosed herein.

[0016] Figure 4 This is a top view of a tablet compression device disclosed herein.

[0017] Figure 5 This is a three-dimensional schematic diagram of a bobbin.

[0018] Figure 6 This is a three-dimensional schematic diagram of an electric motor disclosed herein.

[0019] Figure 7This is a three-dimensional schematic diagram of the motor after the plug-in shaft has been fitted and fixed onto it.

[0020] Figure 8 A three-dimensional schematic diagram showing the rotating disk after it has been fitted and fixed in place.

[0021] In the diagram: 1-Motor, 2-Output shaft, 3-Rotating disc, 4-Bobbin, 5-Plug-in shaft, 6-Recess, 7-Pressure plate, 8-Pressure arm, 9-Mating surface, 10-First part, 11-Second part, 12-Bending line, 13-Angle, 14-Adjusting screw, 15-Cutting edge, 16-Fastener, 17-Flat side, 18-Guard cover, 19-Setting hole. Detailed Implementation

[0022] To better understand this application, various aspects of this application will be described in more detail below with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of this application and are not intended to limit the scope of this application in any way. Throughout the specification, the same reference numerals refer to the same elements.

[0023] like Figures 1 to 8 As shown, this disclosure proposes an adjustable winding device for a sewing machine, including a motor 1, a rotating disk 3, and a connecting shaft 5. The output shaft 2 of the motor 1 drives the rotating disk 3 and the connecting shaft 5 to rotate together. The connecting shaft 5 is used to insert the bobbin 4. A recess 6 is provided on the upper side of the rotating disk 3 in the circumferential direction of the connecting shaft 5. An elastic pressure plate 7 is fitted in the recess 6. A pressure arm 8 is provided radially on the pressure plate 7. A mating surface 9 that mates with the pressure arm 8 is provided radially on the rotating disk 3. During winding, one end of the thread is elastically pressed between the pressure arm 8 and the mating surface 9 to hold the thread.

[0024] The pressing plate 7 is provided with a bending line 12 to divide the pressing plate 7 into a first part 10 and a second part 11. The first part 10 is fixed on the rotating disk 3. The second part 11 is bent upward relative to the first part 10 at the bending line 12 to form an included angle 13. The pressing arm 8 is provided on the second part 11. Adjusting screws 14 are also provided at both ends of the bending line 12. The adjusting screws 14 are used to move up and down to change the upturned state of the second part 11 to adjust the included angle 13, thereby changing the fit between the pressing arm 8 and the mating surface 9.

[0025] Output shaft 2 and connector shaft 5 can be configured as an integrated shaft or as separate shafts. In this example, as shown... Figure 6 , 7As shown in Figure 8, a split-shaft configuration is adopted. Specifically, a plug-in shaft 5 is sleeved and fixedly installed on the output shaft 2 of motor 1, and then a rotating disk 3 is further sleeved and fixedly installed. The rotating disk 3 has a through hole for the plug-in shaft 5 to extend out. During winding, the bobbin 4 is inserted and installed on the plug-in shaft 5 through the fitting hole 19, thereby causing the output shaft 2 to drive the rotating disk 3, the plug-in shaft 5, and the bobbin 4 to rotate together. The split configuration brings the advantage of manufacturing convenience, for example, the commonly used motor 1 can be used without the need to design an additional output shaft 2 for motor 1.

[0026] In some embodiments, such as Figure 1 , 3 As shown in Figure 4, a cutting notch 15 is provided on the pressure arm 8. In this example, the cutting notch 15 is V-shaped. This allows for convenient and nearby cutting when needed, thereby improving production efficiency.

[0027] In some embodiments, such as Figure 1 , 3 As shown in Figure 4, the line connecting the pressure arm 8 and the fastener 16 that fixes the first part 10 bisects the bending line 12. This allows the pressure arm 8 to be positioned at the far end and centered of the second part 11, thus facilitating the elastic pressing of the line by the pressure arm 8.

[0028] In some embodiments, such as Figure 1 , 3 As shown in Figure 4, the tablet 7 is a circular sheet, and the tablet 7 is provided with bending lines 12 to divide the tablet 7 into a semi-circular first part 10 and a semi-circular second part 11. In this way, the structure is further simplified, making this disclosure more practical.

[0029] Furthermore, such as Figure 4 As shown, a flattened side 17 is formed at the junction of the first part 10 and the second part 11, and an adjusting screw 14 is disposed on the flattened side 17. In this way, the junction is the two ends of the bending line 12, and the adjusting screw 14 can more effectively adjust the position of the second part 11, so that the pressure area of ​​the second part 11 subjected to the adjusting screw 14 at both ends is more uniform, thereby making the support of the adjusting screw 14 for the second part 11 reliable.

[0030] In some embodiments, such as Figure 1 As shown, the motor 1 is equipped with a protective cover 18 around the rotating disk 3, which makes the rotating disk 3 work more safely and also helps protect the workers.

[0031] When understanding this utility model, the above structure may be referred to other embodiments / appendices if necessary. Figure 1 And that is understood, so I will not elaborate further here.

[0032] The above description is merely an illustrative embodiment of this utility model. Therefore, all equivalent changes or modifications made to the structure, features, and principles described in the scope of protection of this utility model are included within the scope of protection of this utility model.

Claims

1. An adjustable winding device for a sewing machine, comprising a motor (1), characterized in that, It also includes a rotating disk (3) and a plug shaft (5). The output shaft (2) of the motor (1) drives the rotating disk (3) and the plug shaft (5) to rotate together. The plug shaft (5) is used to insert the bobbin (4). A recess (6) is provided on the upper side of the rotating disk (3) in the circumference of the plug shaft (5). An elastic pressure plate (7) is fitted in the recess (6). A pressure arm (8) is provided in the radial direction of the pressure plate (7). A mating surface (9) that mates with the pressure arm (8) is provided in the radial direction of the rotating disk (3). When winding the thread, one end of the thread is elastically pressed between the pressure arm (8) and the mating surface (9) to hold the thread. The pressing plate (7) is provided with a bending line (12) to divide the pressing plate (7) into a first part (10) and a second part (11). The first part (10) is fixed on the rotating disk (3). The second part (11) is bent upward relative to the first part (10) at the bending line (12) to form an angle (13). The pressing arm (8) is provided on the second part (11). Adjusting screws (14) are also provided at both ends of the bending line (12). The adjusting screws (14) are used to move up and down to change the tilted state of the second part (11) to adjust the angle (13), thereby changing the fit between the pressing arm (8) and the mating surface (9).

2. The adjustable winding device for a sewing machine according to claim 1, characterized in that, A cutting notch (15) is provided on the pressure arm (8).

3. The adjustable winding device for a sewing machine according to claim 1, characterized in that, The line connecting the pressure arm (8) and the fastener (16) that fixes the first part (10) bisects the bending line (12).

4. An adjustable winding device for a sewing machine according to claim 1 or 3, characterized in that, The tablet (7) is made of a circular sheet. The tablet (7) is provided with a bending line (12) to divide the tablet (7) into a semi-circular first part (10) and a semi-circular second part (11).

5. An adjustable winding device for a sewing machine according to claim 4, characterized in that, A flat-cut side (17) is formed at the junction of the first part (10) and the second part (11), and an adjusting screw (14) is provided on the flat-cut side (17).

6. An adjustable winding device for a sewing machine according to claim 1, characterized in that, The motor (1) is provided with a protective cover (18) around the rotating disk (3).

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