Anti-winding device for sewing machine head
By installing an anti-tangle device with an external plate and cylindrical roller at the sewing machine head, the problems of thread scattering and tangling are solved, achieving stable thread management and improving the stability of the sewing process.
Patent Information
- Application Number
- CN202520401196.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-10
AI Technical Summary
In the design of sewing machine heads, the direct lead-out of the thread lacks guidance and fixation, which causes the thread to easily scatter, knot, or entangle on the protruding parts of the machine head during sewing, increasing the difficulty of operation and the failure rate.
An outer plate and a cylindrical roller are installed on the front side of the sewing machine head. The cylindrical roller is fixedly connected to the outer plate. A trapezoidal plate and a thread guide groove are provided on the outside of the cylindrical roller. The tension of the thread and the dynamic adjustment of the path are realized through thread connection to ensure that the thread moves smoothly along the thread guide groove and avoids tangling.
It effectively guides the movement path of the thread, improves the efficiency and stability of thread management, prevents tangling, and enhances sewing quality and operational stability.
Smart Images
Figure CN223907114U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewing machine head technical field, concretely is a kind of anti-entangling device for sewing machine head. BACKGROUND
[0002] In the sewing machine technical field, especially for the design and optimization of sewing machine head, for a long time, there has been a thorny problem-the entanglement and accumulation of thread bundle.
[0003] In the traditional design, wire is directly led out from the head, lacks necessary guide and fixing device, so that wire is easy to drift, knot or entangle on various protruding components of the head, such as needle bar, presser foot, etc., increases the operation difficulty and failure rate. UTILITY MODEL CONTENT
[0004] The utility model aims at providing a kind of anti-entangling device for sewing machine head to solve the problem that wire is directly led out from the head in the traditional design in the above background technology, lacks necessary guide and fixing device, so that wire is easy to drift, knot or entangle on various protruding components of the head, such as needle bar, presser foot, etc., increases the operation difficulty and failure rate.
[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of anti-entangling device for sewing machine head, including head body, the fixed connection of external plate is positioned at the center in the front side of head body, the fixed connection of fixed rod is positioned at the front side of external plate, the outer side of fixed rod is sleeved and is slidably connected with cylindrical roller, the outer side of cylindrical roller is provided with several trapezoidal plates, the outer side of trapezoidal plate is equipped with thread arranging groove, the inside of the side position of head body is equipped with movable slot one, the inside rotationally connected with rotating rod of movable slot one, the outer surface of rotating rod is equipped with external thread, the outer side of rotating rod is sleeved with moving plate, the center of moving plate is equipped with internal thread, the front side of moving plate is fixedly connected with connecting column, the front side of connecting column is fixedly connected with wire rack by being penetrated to the outside of head body, and the center of wire rack is equipped with wire hole.
[0006] Compared with the prior art, the utility model has the beneficial effects that:
[0007] The anti-winding device for the sewing machine head effectively guides the movement path of the wire, the wire can smoothly pass along the wire arranging groove, avoids the scattering and knotting phenomenon of the wire in the sewing process, significantly improves the efficiency and stability of the wire management, the cylindrical roller and the trapezoidal plate are fixedly connected through the connecting strip, forming an anti-winding structure which is dynamically adjusted, in the sewing process, the cylindrical roller can slightly slide along with the tension change of the wire, so as to drive the trapezoidal plate and the wire arranging groove thereon to adjust the position, ensure that the wire always keeps on the correct path, effectively prevent the wire from winding on the protruding parts of the head such as the needle bar, the presser foot and the like, through the thread connection of the external thread on the rotating rod and the internal thread on the moving plate, the precise adjustment of the wire tension is realized, the operator can drive the rotating rod to rotate through the rotation of the knob, and then drive the moving plate, the connecting column thereon and the wire rack to move up and down, so as to adjust the tension of the wire, the design not only improves the controllability of the wire tension, but also makes the sewing process more stable, and the sewing quality is significantly improved. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 It is a structural schematic view of the utility model;
[0009] Figure 2 It is a structural schematic view of the utility model Figure 1 It is a partial enlarged schematic view of A in the utility model;
[0010] Figure 3 It is a structural perspective view of the cylindrical roller of the utility model;
[0011] Figure 4 It is a structural perspective view of the moving plate of the utility model;
[0012] Figure 5 It is a structural front view of the utility model.
[0013] In the drawing: 1, head body; 2, external plate; 3, fixed rod; 4, cylindrical roller; 5, connecting strip; 6, trapezoidal plate; 7, wire arranging groove; 8, movable groove one; 9, movable groove two; 10, sliding groove; 11, rotating groove; 12, rotating rod; 13, external thread; 14, moving plate; 15, sliding block; 16, rotating plate; 17, knob; 18, internal thread; 19, connecting column; 20, wire rack; 21, wire hole. DETAILED DESCRIPTION
[0014] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0015] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a thread winding prevention device for sewing machine head, including head body 1, the center position of the front side of head body 1 is fixedly connected with external plate 2, the front side of external plate 2 is fixedly connected with fixed rod 3, the outside of fixed rod 3 is sleeved and slidably connected with cylindrical roller 4, the outside of cylindrical roller 4 is provided with several trapezoidal plates 6, the outside of trapezoidal plate 6 is provided with thread arranging groove 7, the position of the side in head body 1 is provided with movable groove one 8, the inside of movable groove one 8 is rotatably connected with rotating rod 12, the outer surface of rotating rod 12 is provided with external thread 13, the outside of rotating rod 12 is sleeved with moving plate 14, the center of moving plate 14 is provided with internal thread 18, the front side of moving plate 14 is fixedly connected with connecting column 19, the front side of connecting column 19 is fixedly connected with thread rack 20 and is connected with the outside of head body 1, and the center of thread rack 20 is provided with thread hole 21.
[0016] The outside of cylindrical roller 4 is fixedly connected with several connecting strips 5, and the side, away from cylindrical roller 4, of connecting strip 5 is fixedly connected with trapezoidal plate 6.
[0017] External thread 13 is threadedly connected with internal thread 18.
[0018] The inside of head body 1 is provided with sliding groove 10 corresponding to the two sides of movable groove one 8, and the two sides of moving plate 14 are fixedly connected with sliding block 15, and the side, away from moving plate 14, of sliding block 15 is connected with the inside of sliding groove 10 and slidably connected with sliding groove 10.
[0019] The inside of head body 1 is provided with movable groove two 9 corresponding to the top of movable groove one 8, and the top of rotating rod 12 is fixedly connected with knob 17 and is connected with the outside of movable groove two 9.
[0020] The inside of head body 1 is provided with rotating groove 11 corresponding to the top position of movable groove two 9, and the top position of rotating rod 12 is fixedly connected with rotating plate 16, and the outside of rotating plate 16 is connected with the inside of rotating groove 11 and rotatably connected with rotating groove 11.
[0021] The center position of connecting column 19 is slidably connected with the front surface of head body 1.
[0022] Working principle: when the sewing machine starts working, the wire is first introduced into the wire arranging groove 7, due to the special design of the wire arranging groove 7, the wire can move smoothly along its path, without randomly flying or knotting, the sliding function of the cylindrical roller 4 enables the wire to drive the cylindrical roller 4 and the trapezoidal plate 6 on it to make fine adjustment when it is under tension, so as to ensure that the wire always keeps in the correct path, effectively preventing the winding of the wire, after passing through the wire arranging groove 7, the wire continues to move forward to the wire hole 21 on the wire holder 20, the wire holder 20 is fixedly connected with the moving plate 14 through the connecting column 19, the center of the moving plate 14 is provided with an internal thread 18, which is screw connected with the external thread 13 on the outer surface of the rotating rod 12, when the operator needs to adjust the tension of the wire, the rotating knob 17 (the rotating knob 17 is fixedly connected with the rotating rod 12) can be rotated to drive the rotating rod 12 to rotate, due to the screw connection between the external thread 13 and the internal thread 18, the rotation of the rotating rod 12 will drive the moving plate 14 and the connecting column 19 and the wire holder 20 on it to move up and down, so as to adjust the tension of the wire. The wire passes through the wire hole 21 and is sewn with proper tension. In order to ensure the stability of the moving plate 14 when adjusting the tension of the wire, the inside of the machine head body 1 is provided with a sliding groove 10 corresponding to both sides of the movable groove one 8. The moving plate 14 is fixedly connected with the sliding block 15 on both sides, these sliding blocks 15 penetrate into the inside of the sliding groove 10 and are slidingly connected with the sliding groove 10, at the same time, the top of the rotating rod 12 penetrates to the outside of the movable groove two 9 and is fixedly connected with the rotating knob 17, the operator can adjust the rotation of the rotating rod 12 by rotating the rotating knob 17, the top of the rotating rod 12 is also fixedly connected with the rotating plate 16, the outside of the rotating plate 16 penetrates into the rotating groove 11 corresponding to the top position of the movable groove two 9 in the inside of the machine head body 1 and is rotationally connected with the rotating groove 11, this design ensures the stability of the rotating rod 12 when rotating.
[0023] In summary: the anti-winding device for the sewing machine head, by setting the external plate 2 and the fixedly connected cylindrical roller 4 on the front side of the head body 1, and a plurality of trapezoidal plates 6 and thread arranging grooves 7 arranged outside the cylindrical roller 4, the device effectively guides the movement path of the wire, the wire can smoothly pass along the thread arranging groove 7, avoids the scattering and knotting phenomenon of the wire in the sewing process, significantly improves the efficiency and stability of the wire management, the cylindrical roller 4 and the trapezoidal plate 6 are fixedly connected through the connecting strip 5, forming a dynamic adjustment anti-winding structure, in the sewing process, the cylindrical roller 4 can slightly slide with the change of the tension of the wire, thereby driving the trapezoidal plate 6 and the thread arranging groove 7 thereon to adjust the position, ensuring that the wire always remains on the correct path, effectively preventing the wire from winding around the protruding parts of the head such as the needle bar, the presser foot and the like, through the screw thread connection of the external thread 13 on the rotating rod 12 and the internal thread 18 on the moving plate 14, the precise adjustment of the wire tension is realized, the operator can rotate the rotating rod 12 by rotating the knob 17, thereby driving the moving plate 14 and the connecting column 19 and the wire rack 20 thereon to move up and down, thereby adjusting the tension of the wire, this design not only improves the controllability of the wire tension, but also makes the sewing process more stable, and the sewing quality is significantly improved.
[0024] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.
[0025] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. An anti-tangle device for a sewing machine head, comprising a head body (1), characterized in that: An outer plate (2) is fixedly connected to the center of the front side of the machine head body (1). A fixing rod (3) is fixedly connected to the front side of the outer plate (2). A cylindrical roller (4) is sleeved and slidably connected to the outside of the fixing rod (3). Several trapezoidal plates (6) are provided on the outside of the cylindrical roller (4). A cable management groove (7) is opened on the outside of the trapezoidal plates (6). A movable groove (8) is opened on one side of the machine head body (1). The movable groove (8) rotates inside. A rotating rod (12) is connected to the rotating rod (12), and an external thread (13) is provided on the outer surface of the rotating rod (12). A movable plate (14) is sleeved on the outer side of the rotating rod (12), and an internal thread (18) is provided in the center of the movable plate (14). A connecting column (19) is fixedly connected to the front side of the movable plate (14). The front side of the connecting column (19) extends through to the outer side of the machine head body (1) and is fixedly connected to a wire frame (20). A wire hole (21) is provided in the center of the wire frame (20).
2. The anti-tangle device for a sewing machine head according to claim 1, characterized in that: Several connecting strips (5) are fixedly connected to the outer side of the cylindrical roller (4), and the side of the connecting strips (5) away from the cylindrical roller (4) is fixedly connected to the trapezoidal plate (6).
3. The anti-tangle device for a sewing machine head according to claim 1, characterized in that: The external thread (13) is threadedly connected to the internal thread (18).
4. The anti-tangle device for a sewing machine head according to claim 1, characterized in that: The machine head body (1) has sliding grooves (10) on both sides of the movable groove (8) inside. The movable plate (14) has sliders (15) fixedly connected to both sides. The side of the slider (15) away from the movable plate (14) passes through the interior of the sliding groove (10) and is slidably connected to the sliding groove (10).
5. The anti-tangle device for a sewing machine head according to claim 1, characterized in that: The machine head body (1) has an active groove (9) at the top of the active groove (8) inside, and the top of the rotating rod (12) extends through to the outside of the active groove (9) and is fixedly connected to a knob (17).
6. The anti-tangle device for a sewing machine head according to claim 1, characterized in that: The machine head body (1) has a rotating groove (11) at the top position corresponding to the movable groove 2 (9). The rotating rod (12) is fixedly connected to a rotating plate (16) at the top position. The outer side of the rotating plate (16) extends into the interior of the rotating groove (11) and is rotatably connected to the rotating groove (11).
7. The anti-tangle device for a sewing machine head according to claim 1, characterized in that: The connecting column (19) is slidably connected to the front surface of the machine head body (1) near its center position.