Thread shifting device of sewing machine

Abstract

The utility model relates to a sewing machine thread shifting device which comprises a connecting plate, open grooves are formed in the positions, close to the left side and the right side, of the top of the connecting plate, magnets are fixedly connected in the open grooves, ropes are fixedly connected to the centers of the front side and the rear side of the connecting plate, and the positions, close to the top, of the edges of the outer sides of the ropes are sleeved with movable pipes. Through mutual cooperation of the connecting plate, the magnet, the movable pipe, the T-shaped plate and other structures, the connecting plate can be placed on the sewing machine, the magnet is attracted to the surface of the sewing machine, the connecting plate is preliminarily limited, then the two ropes are wound around the surface of the sewing machine, and the two ropes are wound around the surface of the sewing machine. And the T-shaped plate on the movable pipe on one side is placed in the T-shaped groove in the movable pipe on the other side, so that the connecting plate is further limited.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular to a sewing machine thread guide device. Background Technology

[0002] Sewing is an important processing step in clothing and hat production. Sewing machines are essential equipment in the sewing process. They use one or more sewing threads to form one or more stitches on the fabric, allowing one or more layers of fabric to interweave or sew together. After sewing is completed, the thread needs to be cut. After the thread is cut, in order to allow the thread to start sewing smoothly again, the sewing machine's thread-pulling device is used to pull the thread up from the needle hole on the needle plate.

[0003] However, existing sewing machine thread guide devices have some problems in use. They are inconvenient to install and disassemble. They are often fixed on the sewing machine, and if the thread guide lever malfunctions, it will be difficult to repair, which will reduce the practicality of the device. At the same time, the angle of the thread guide lever is mostly fixed during use, which is not convenient for handling different needle and thread positions. Utility Model Content

[0004] The purpose of this invention is to provide a sewing machine thread guide device to solve the problems mentioned in the background art.

[0005] The technical solution of this utility model is a sewing machine thread guide device, including a connecting plate. The top of the connecting plate has slots near the left and right sides, and magnets are fixedly connected in the slots. Ropes are fixedly connected to the center of the front and rear sides of the connecting plate. Movable tubes are sleeved on the outer edges of the ropes near the top. A fixed plate is fixedly connected to the end of the rope away from the connecting plate. A T-shaped groove is opened on the rear side of the movable tube on the front side, and a T-shaped plate is fixedly connected to the front side of the movable tube on the rear side. The T-shaped plate is located in the T-groove.

[0006] In one embodiment, a motor is fixedly connected to the bottom of the connecting plate near the left side. A threaded rod is fixedly connected to the power output shaft of the motor. A connecting rod is fixedly connected to the right end of the threaded rod. A threaded tube is fitted around the outer edges of the threaded rod and the connecting rod. The threaded tube and the threaded rod are connected by mutual threads. A blind hole is opened at the right end of the connecting rod. Grooves are opened on both the front and rear sides of the blind hole. A movable rod is provided in the blind hole. A convex plate is fixedly connected to both the front and rear sides of the movable rod. The convex plate is located in an adjacent groove. A support plate is fixedly connected to the right end of the movable rod. The support plate is located to the right of the threaded tube.

[0007] In one embodiment, an annular groove is formed on the outer edge of the threaded tube near the right side, and a semicircular plate is fitted on the outer edge of the threaded tube near the right side. A movable block is movably connected in the annular groove, and the bottom of the movable block is fixedly connected to one side of the semicircular plate. A wire-pulling rod is inserted into the bottom of the semicircular plate near the right side. A second gear is fixedly connected to the outer edge of the wire-pulling rod near the top. A first gear is meshed on the left side of the second gear. An insertion hole is formed on the right side of the semicircular plate near the bottom, and an insertion rod is provided in the insertion hole. The right end of the insertion rod is fixedly connected to the left side of the support plate near the bottom.

[0008] In one embodiment, a rotating rod is provided through the inner cavity of the first gear and is fixedly connected thereto. The top end of the rotating rod is inserted into the bottom of the semicircular plate, and an adjusting disc is fixedly connected to the bottom end of the rotating rod.

[0009] In one embodiment, the bottom of the connecting plate is provided with a sliding groove, and a slider is movably connected in the sliding groove. The inner cavity of the slider is provided with a through hole.

[0010] In one embodiment, an L-shaped threaded rod is fixedly connected to the top of the threaded tube near the left side, and the end of the L-shaped threaded rod away from the threaded tube passes through a through hole.

[0011] In one embodiment, a nut is threaded onto the outer edge of the L-shaped threaded rod away from the threaded tube, and the nut is located on the left side of the slider.

[0012] The beneficial effects provided by this utility model are:

[0013] 1. By cooperating with each other, the connecting plate, magnet, movable tube, T-shaped plate and other structures can be placed on the sewing machine, the magnet can be attracted to the surface of the sewing machine to initially limit the position of the connecting plate, and then two ropes are wrapped around the surface of the sewing machine, and the T-shaped plate on one movable tube is placed inside the T-shaped groove on the other movable tube to further limit the position of the connecting plate.

[0014] 2. Through the cooperation of the motor, threaded tube, first gear, and wire-pulling rod, the motor can drive the threaded tube to move left and right via the threaded rod. After the threaded tube moves out of the surface of the threaded rod, the insertion rod is inserted into the hole on the right side of the semicircular plate. When the motor drives the threaded rod and connecting rod to rotate, it will drive the semicircular plate to rotate. The semicircular plate will drive the wire-pulling rod to swing. When it is necessary to adjust the angle of the wire-pulling rod, the first gear is rotated. The first gear drives the wire-pulling rod to rotate via the second gear. Attached Figure Description

[0015] Figure 1 This is a front sectional view of the present invention;

[0016] Figure 2This is a front view of the present utility model;

[0017] Figure 3 This is a right view of the semicircular plate component of this utility model;

[0018] Figure 4 This is a top view of the movable tube of the component of this utility model;

[0019] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0020] In the attached diagram: 1. Connecting plate; 2. Magnet; 3. Rope; 4. Movable tube; 5. Fixed plate; 6. Motor; 7. Threaded rod; 8. Movable rod; 9. Threaded tube; 10. Support plate; 11. First gear; 12. Rotating rod; 13. Adjusting plate; 14. Second gear; 15. Wire guide rod; 16. T-shaped plate; 17. Slider; 18. Nut; 19. L-shaped threaded rod; 20. Connecting rod; 21. Protruding plate; 22. Insert rod; 23. Movable block; 24. Semicircular plate. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0022] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0023] In one embodiment, such as Figure 1-5As shown, the sewing machine thread-pulling device includes a connecting plate 1. The top of the connecting plate 1 has slots near both the left and right sides, and magnets 2 are fixedly connected to each slot. Ropes 3 are fixedly connected to the center of both the front and rear sides of the connecting plate 1. Movable tubes 4 are fitted onto the outer edges of the ropes 3 near the top. A fixed plate 5 is fixedly connected to the end of the ropes 3 away from the connecting plate 1. A T-shaped groove is formed behind the front movable tube 4, and a T-shaped plate 16 is fixedly connected to the front of the rear movable tube 4, with the T-shaped plate 16 located within the T-groove. A magnet 2 is fixedly connected to the bottom of the connecting plate 1 near the left side. Motor 6, the power output shaft of motor 6 is fixedly connected to threaded rod 7, the right end of threaded rod 7 is fixedly connected to connecting rod 20, the outer edges of threaded rod 7 and connecting rod 20 are jointly fitted with threaded tube 9, threaded tube 9 and threaded rod 7 are threadedly connected to each other, the right end of connecting rod 20 is provided with blind hole, the front and rear sides of blind hole are provided with groove, movable rod 8 is provided in blind hole, the front and rear sides of movable rod 8 are fixedly connected with convex plate 21, the convex plate 21 is located in adjacent groove, the right end of movable rod 8 is fixedly connected to support plate 10, support plate 10 is located on the right side of threaded tube 9;

[0024] An annular groove is formed on the outer edge of the threaded tube 9 near the right side. A semicircular plate 24 is fitted onto the outer edge of the threaded tube 9 near the right side. A movable block 23 is movably connected within the annular groove. The bottom of the movable block 23 is fixedly connected to one side of the semicircular plate 24. A wire-pulling rod 15 is inserted into the bottom of the semicircular plate 24 near the right side. A second gear 14 is fixedly connected to the outer edge of the wire-pulling rod 15 near the top. A first gear 11 is meshed on the left side of the second gear 14. An insertion hole is formed on the right side of the semicircular plate 24 near the bottom. An insertion rod 22 is inserted into the insertion hole. The right end of the insertion rod 22 is fixedly connected to the left side of the support plate 10 near the bottom. At the bottom, a rotating rod 12 is inserted through the inner cavity of the first gear 11 and fixedly connected to it. The top end of the rotating rod 12 is inserted into the bottom of the semi-circular plate 24. An adjusting disc 13 is fixedly connected to the bottom end of the rotating rod 12. A sliding groove is opened at the bottom of the connecting plate 1, and a slider 17 is movably connected in the sliding groove. A through hole is opened in the inner cavity of the slider 17. An L-shaped threaded rod 19 is fixedly connected to the top of the threaded tube 9 near the left side. The end of the L-shaped threaded rod 19 away from the threaded tube 9 passes through the through hole. A nut 18 is threadedly connected to the outer edge of the L-shaped threaded rod 19 away from the threaded tube 9. The nut 18 is located on the left side of the slider 17.

[0025] Working principle: When the device starts working, the connecting plate 1 is placed on one side of the sewing machine. The connecting plate 1 drives the magnet 2 to move, and the magnet 2 will adhere to the surface of the sewing machine, initially limiting the connection plate 1. Then, two ropes 3 are tied to the surface of the sewing machine, and the T-shaped plate 16 on one side of the movable tube 4 is placed in the T-shaped groove on the other side of the movable tube 4, so that the ropes 3 further limit the connection plate 1. When it is necessary to swing the thread lever 15, the motor 6 is started. The motor 6 drives the threaded rod 7 to rotate, the threaded rod 7 drives the connecting rod 20 to rotate, and the threaded rod 7 drives the threaded tube 9 to move left and right. The threaded tube 9 drives the slider 17 to move left and right through the L-shaped threaded rod 19 and the nut 18. When the threaded tube 9 moves out of the surface of the threaded rod 7, During its movement, the semicircular plate 24 will come into contact with the insertion rod 22. The insertion rod 22 is inserted into the hole on the right side of the semicircular plate 24. When the connecting rod 20 rotates, the connecting rod 20 drives the movable rod 8 and the support plate 10 to rotate through the convex plate 21. The support plate 10 drives the semicircular plate 24 to rotate through the insertion rod 22. The semicircular plate 24 drives the movable block 23 to rotate. The movable block 23 drives the thread-pulling rod 15 to swing. The thread-pulling rod 15 then processes the needle and thread. When it is necessary to adjust the angle of the thread-pulling rod 15, the adjusting plate 13 is rotated. The adjusting plate 13 drives the rotating rod 12 to rotate. The rotating rod 12 drives the first gear 11 to rotate. The first gear 11 drives the second gear 14 to rotate. The second gear 14 drives the thread-pulling rod 15 to rotate.

[0026] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. Thread guiding device for a sewing machine, characterized in that Including the connecting plate (1), the connecting plate (1) top near both sides are provided with the slot, the slot is connected with the magnet (2) uniformly, the connecting plate (1) front and back two sides center are connected with the rope (3) uniformly, the rope (3) outside edge near the top are all set with the movable pipe (4), the rope (3) away from the connecting plate (1) one end are all connected with the fixed disc (5), the movable pipe (4) rear side is provided with T type slot, the movable pipe (4) front side is connected with T type board (16) in rear side, T type board (16) is located in T type slot.

2. The sewing machine threader according to claim 1, wherein The bottom of the connecting plate (1) is fixedly connected with a motor (6) near the left side, the power output shaft of the motor (6) is fixedly connected with a threaded rod (7), the right end of the threaded rod (7) is fixedly connected with a connecting rod (20), the outer edges of the threaded rod (7) and the connecting rod (20) are commonly sleeved with a threaded tube (9), the threaded tube (9) and the threaded rod (7) are threadedly connected, the right end of the connecting rod (20) is provided with a blind hole, the front and back sides of the blind hole are provided with grooves, the blind hole is provided with a movable rod (8), the front and back sides of the movable rod (8) are fixedly connected with a lug (21), the lug (21) is located in the adjacent groove, the right end of the movable rod (8) is fixedly connected with a support disc (10), and the support disc (10) is located on the right side of the threaded tube (9).

3. The sewing machine threader according to claim 2, wherein, The outer edge of the threaded tube (9) is provided with an annular groove near the right side, the outer edge of the threaded tube (9) is sleeved with a semicircular plate (24) near the right side, the annular groove is movably connected with a movable block (23), the bottom of the movable block (23) is fixedly connected to one side of the semicircular plate (24), the bottom of the semicircular plate (24) is inserted with a wire pulling rod (15) near the right side, the outer edge of the wire pulling rod (15) is fixedly connected with a second gear (14) near the top, the first gear (11) is engaged on the left side of the second gear (14), the semicircular plate (24) is provided with a insertion hole near the bottom on the right side, the insertion hole is provided with an insertion rod (22), and the right end of the insertion rod (22) is fixedly connected to the left side of the support disc (10) near the bottom.

4. The sewing machine threader of claim 3, wherein, The first gear (11) is provided with a rotating rod (12) penetrating the inner cavity and fixedly connected thereto, the top end of the rotating rod (12) is inserted into the bottom of the semicircular plate (24), and the bottom end of the rotating rod (12) is fixedly connected with an adjusting disc (13).

5. The sewing machine threader according to claim 4, wherein, The bottom of the connecting plate (1) is provided with a sliding groove, the sliding groove is movably connected with a sliding block (17), and the sliding block (17) is provided with a through hole in the inner cavity.

6. The sewing machine threader according to claim 5, wherein, The top of the threaded tube (9) is fixedly connected with an L-shaped threaded rod (19) near the left side, and the end away from the threaded tube (9) of the L-shaped threaded rod (19) penetrates the through hole.

7. The sewing machine threader according to claim 6, wherein The outer edge of the L-shaped threaded rod (19) is threadedly connected with a nut (18) away from the threaded tube (9) on one side, and the nut (18) is located on the left side of the sliding block (17).

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