Thread trimming device and computerized embroidery machine
By designing a linkage mechanism driven by a pull rod and a cutting unit consisting of a moving blade in a computerized embroidery machine, the problem of manual thread cutting caused by the small distance between machine heads was solved, realizing automated thread cutting and efficient assembly, and reducing labor costs.
Patent Information
- Application Number
- CN202423096473.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The existing computerized embroidery machine's thread-cutting structure cannot automatically cut threads due to the reduced distance between the machine heads, requiring manual operation, which affects production efficiency and increases labor costs.
Design a wire cutting device, including a pull rod and multiple wire cutting units. Each wire cutting unit consists of a linkage mechanism and moving blades. The pull rod drives the linkage mechanism to enable multiple moving blades to perform wire cutting actions simultaneously, adapting to the installation requirements of narrow spacing.
It enables automated wire cutting in tight spaces, improving cutting and assembly efficiency, reducing manual operations, and lowering production costs.
Smart Images
Figure CN223548235U_ABST
Abstract
Description
Technical Field
[0001] This utility model generally relates to the field of computerized embroidery machine technology, and more particularly to a thread-cutting device and a computerized embroidery machine. Background Technology
[0002] With the continuous upgrading of computerized embroidery machine technology, the distance between machine heads is getting smaller and smaller. Due to the increasingly smaller distance between the heads, the existing thread-cutting structure does not have enough space to be installed. The thread can only be cut manually after the embroidery is completed, which affects production efficiency and increases labor costs.
[0003] In related technologies, the existing thread-cutting structures have increasingly smaller head-to-head distances, resulting in insufficient space for installation. This necessitates manual thread-cutting after the embroidery is completed, which affects production efficiency and increases labor costs. Utility Model Content
[0004] This application aims to provide a thread-cutting device and a computerized embroidery machine, at least for automating thread cutting and improving thread-cutting efficiency.
[0005] This application provides a wire cutting device, including: a pull rod and multiple wire cutting units.
[0006] Multiple wire-cutting units are arranged in the same direction. Each wire-cutting unit includes a linkage mechanism and at least two moving blades, and each moving blade is connected to the linkage mechanism.
[0007] The length direction of the pull rod is parallel to the arrangement direction of the wire cutting unit. Each of the linkage mechanisms is connected to the pull rod. The pull rod reciprocates in its length direction, causing the linkage mechanism to drive each of the corresponding moving blades to perform a wire cutting action.
[0008] In one possible implementation, the linkage mechanism includes a first connecting rod, a first rocker arm and a second rocker arm hinged to both ends of the first connecting rod, with the other end of the first rocker arm hinged and the other end of the second rocker arm hinged.
[0009] One of the moving blades is fixedly connected to the first rocker arm, and the other moving blade is fixedly connected to the second rocker arm. One of the first rocker arm and the second rocker arm swings, causing the two moving blades to perform a wire-cutting action.
[0010] As an alternative implementation, the linkage mechanism further includes a mounting shaft and a rotating shaft, one of which, the rotating shaft and the mounting shaft, passes through the other end of the first rocker arm, and the other passes through the other end of the second rocker arm.
[0011] As an alternative implementation, one of the rotating shaft and the mounting shaft may be integrally formed with the first rocker arm or separately disposed; the other may be integrally formed with the second rocker arm or separately disposed.
[0012] As an implementation method, the first rocker arm is provided with a first mounting notch, the second rocker arm is provided with a second mounting notch, the second mounting notch is provided on the same side as the first mounting notch, a first hinge protrusion is provided at the first mounting notch, a second hinge protrusion is provided at the second mounting notch, and the two ends of the first connecting rod are respectively hinged to the first hinge protrusion and the second hinge protrusion.
[0013] As one possible implementation, the first rocker arm has a first anti-rotation protrusion that passes through the moving blade connected to the first rocker arm; the second rocker arm has a second anti-rotation protrusion that passes through the moving blade connected to the second rocker arm.
[0014] As an alternative implementation, the linkage mechanism further includes a second connecting rod, a third connecting rod, and a connecting block. The connecting block is sleeved on the pull rod. One end of the second connecting rod is hinged to the connecting block, and the other end is hinged to one end of the third connecting rod. The other end of the third connecting rod is connected to the rotating shaft. The pull rod reciprocates along its length, enabling the rotating shaft to rotate.
[0015] As one possible implementation, the axis of the rotating shaft extends vertically, and multiple rotating shafts are arranged at equal intervals in the same direction.
[0016] As an alternative implementation, the linkage mechanism further includes a rocker arm located between the two ends of the first connecting rod, on which the moving blade is fixedly connected.
[0017] This application also provides a computerized embroidery machine, including the aforementioned thread-cutting device.
[0018] The above solution connects at least two moving blades to a linkage mechanism, and the linkage allows the mechanism to simultaneously drive each moving blade to perform the wire-cutting action. Even in scenarios where the distance between two adjacent cutting heads is small, a single linkage mechanism can be installed. The movement of the linkage mechanism will not be affected by the small distance, thus ensuring that each moving blade stably performs the wire-cutting action. This automates wire cutting, improves cutting efficiency, and also facilitates the assembly of the wire-cutting device, improving its assembly efficiency. Attached Figure Description
[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0020] Figure 1An isometric view of a wire-cutting device provided in an embodiment of this utility model;
[0021] Figure 2 An exploded view of a wire-cutting device provided in an embodiment of this utility model;
[0022] Figure 3 Exploded view of the linkage mechanism provided in the embodiment of this utility model;
[0023] Figure 4 A top view of a wire-cutting device provided in an embodiment of this utility model;
[0024] Figure 5 A schematic diagram of a dual rocker mechanism provided for an embodiment of this utility model;
[0025] Figure 6 A schematic diagram of another dual rocker mechanism provided for an embodiment of this utility model;
[0026] Wire cutting unit a, moving blade 10, first through hole 11, second through hole 12;
[0027] Linkage mechanism 20, connecting block 21, second connecting rod 22, third connecting rod 23, rotating shaft 24, first rocker arm 25, first anti-rotation protrusion 251, first mounting notch 252, first hinge protrusion 253, first connecting rod 26, second rocker arm 27, second anti-rotation protrusion 271, second mounting notch 272, second hinge protrusion 273, mounting shaft 28, rocker arm 29.
[0028] Tie rod 30, bracket 40, shuttle bed 50, base plate 51. Detailed Implementation
[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the scope of the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.
[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.
[0031] In related technologies, computerized embroidery machines are equipped with multiple thread-cutting devices, which are arranged at equal intervals along the same direction. Each thread-cutting device corresponds to a machine head and a rotary shuttle box. The thread-cutting devices are located in front of the rotary shuttle box and include a moving blade 10, a fixed blade, a thread-cutting linkage assembly, and a thread-cutting drive shaft. The moving blade 10, the fixed blade, and the thread-cutting linkage assembly are one-to-one. A thread-cutting linkage assembly is provided between the moving blade 10 and the thread-cutting drive shaft, connecting the moving blade 10 and the thread-cutting drive shaft. When the thread-cutting drive shaft reciprocates along its axial direction, the moving blade 10 moves towards the fixed blade through the thread-cutting linkage assembly to perform the thread-cutting action.
[0032] As the number of machine heads increases, the distance between two adjacent machine heads gradually decreases. However, the space between two adjacent shuttle boxes is limited, which may affect the installation of the wire cutting linkage assembly. Alternatively, the movement of the wire cutting linkage assembly may affect the cutting action of the moving blade 10.
[0033] Based on this, this utility model provides a wire cutting device that can be adapted to scenarios where the distance between two adjacent cutting heads is small, thus avoiding the impact of the small distance between the two adjacent cutting heads on the installation or movement of the wire cutting device.
[0034] At least see Figures 1-6 As shown, a wire cutting device includes a pull rod 30 and multiple wire cutting units a.
[0035] Multiple wire-cutting units a are arranged in the same direction. Each wire-cutting unit a includes a linkage mechanism 20 and at least two moving blades 10, with the moving blades 10 connected to the linkage mechanism 20. The length direction of a pull rod 30 is parallel to the arrangement direction of the wire-cutting units a. Each linkage mechanism 20 is connected to the pull rod 30, and the pull rod 30 reciprocates along its length direction, causing the linkage mechanism 20 to drive its corresponding moving blade 10 to perform wire-cutting action.
[0036] For example, such as Figure 1 As shown, multiple wire-cutting units a are arranged in a left-right direction. The pull rod 30 can be supported by a bracket 40, allowing the pull rod 30 to extend in the left-right direction. The bracket 40 can be connected to the shuttle bed 50. Multiple brackets 40 can be arranged at equal intervals along the length of the pull rod 30.
[0037] Among them, such as Figure 2 As shown, the linkage mechanism 20 includes a first connecting rod 26, a first rocker arm 25 and a second rocker arm 27 hinged to both ends of the first connecting rod 26. The other end of the first rocker arm 25 is hinged, and the other end of the second rocker arm 27 is hinged. One moving blade 10 is fixedly connected to the first rocker arm 25, and the other moving blade 10 is fixedly connected to the second rocker arm 27. The swinging of either the first rocker arm 25 or the second rocker arm 27 causes both moving blades 10 to perform a wire-cutting action.
[0038] It should be noted that one end of the first rocker arm 25 and one end of the second rocker arm 27 are hinged together, and the first connecting rod 26 is located between the other end of the first rocker arm 25 and the other end of the second rocker arm 27, connecting the two. Thus, the first rocker arm 25, the second rocker arm 27, and the first connecting rod 26 form a double rocker mechanism. The double rocker mechanism is simple, has no quick-return characteristic, moves smoothly, has a compact structure, and occupies little space.
[0039] Since the two moving blades 10 are fixedly connected to the first rocker arm 25 and the second rocker arm 27 respectively, when the first rocker arm 25 moves, the two moving blades 10 can move simultaneously to perform the wire-cutting action; or, when the second rocker arm 27 moves, the two moving blades 10 can move simultaneously to perform the wire-cutting action. In this way, the two moving blades 10 can be driven by a single double-rocker mechanism. That is, a double-rocker mechanism is provided between two adjacent cutting heads. Even in scenarios where the distance between two adjacent cutting heads is small, a double-rocker mechanism can be installed. The movement of the double-rocker mechanism will not be affected by the small distance, thus ensuring that the two moving blades 10 stably perform the wire-cutting action. At the same time, it also facilitates the assembly of the wire-cutting device and improves the assembly efficiency of the wire-cutting device.
[0040] In some embodiments, the linkage mechanism 20 further includes a rocker arm 29 located between the two ends of the first connecting rod 26, such as a third rocker arm, a fourth rocker arm, a fifth rocker arm, a sixth rocker arm, etc., disposed in the middle of the first connecting rod 26.
[0041] For example, such as Figure 5 As shown, a first rocker arm 25, a third rocker arm, and a second rocker arm 27 are sequentially arranged on the first connecting rod 26, with the third rocker arm located in the middle of the first connecting rod 26. Moving blades 10 are fixedly connected to the first rocker arm 25, the second rocker arm 27, and the third rocker arm, respectively. When the first rocker arm 25 moves, the three moving blades 10 can move simultaneously to perform a thread-cutting action; alternatively, when the second rocker arm 27 moves, the three moving blades 10 can move simultaneously to perform a thread-cutting action.
[0042] Or, such as Figure 6 As shown, a first rocker arm 25, a third rocker arm, a fourth rocker arm, and a second rocker arm 27 are sequentially arranged on the first connecting rod 26, with the third and fourth rocker arms located in the middle of the first connecting rod 26. Moving blades 10 are fixedly connected to the first rocker arm 25, the second rocker arm 27, the third rocker arm, and the fourth rocker arm, respectively. When the first rocker arm 25 moves, all four moving blades 10 can move simultaneously to perform a thread-cutting action; alternatively, when the second rocker arm 27 moves, all four moving blades 10 can move simultaneously to perform a thread-cutting action.
[0043] With this configuration, multiple moving blades 10 can be driven by a single dual-rocker mechanism. In other words, multiple cutting heads correspond to a single dual-rocker mechanism. Even in scenarios where the distance between adjacent cutting heads is very small, multiple cutting heads can still be equipped with a single dual-rocker mechanism. The movement of the dual-rocker mechanism will not be affected by the small distance, thus ensuring that each moving blade 10 stably performs the wire-cutting action. Furthermore, this configuration facilitates the assembly of the wire-cutting device and improves its assembly efficiency.
[0044] The following embodiment describes a linkage mechanism 20 with a first rocker arm 25 and a second rocker arm 27, located at both ends of a first connecting rod 26:
[0045] The linkage mechanism 20 also includes a mounting shaft 28, a rotating shaft 24, a second connecting rod 22, a third connecting rod 23, and a connecting block 21. One of the rotating shaft 24 and the mounting shaft 28 passes through the other end of the first rocker arm 25, and the other passes through the other end of the second rocker arm 27.
[0046] like Figure 2 and Figure 3 As shown, the rotating shaft 24 extends vertically and passes through the front end of the first rocker arm 25. The mounting shaft 28 is arranged parallel to the rotating shaft 24 and passes through the front end of the second rocker arm 27. The mounting shaft 28 can be rotatably mounted on the base plate 51 of the shuttle bed 50, and the rotating shaft 24 can pass through the base plate 51 of the shuttle bed 50.
[0047] The length of the pull rod 30 is parallel to the arrangement direction of the wire-cutting unit a, and the length of the pull rod 30 extends in the left-right direction. Multiple connecting blocks 21 are fitted onto the pull rod 30, each corresponding to a rotating shaft 24. One end of the second connecting rod 22 is hinged to a connecting block 21, and the other end is hinged to one end of a third connecting rod 23, the other end of which is connected to the rotating shaft 24. The pull rod 30 reciprocates along its length, causing the rotating shaft 24 to rotate. This, in turn, drives the first rocker arm 25, causing both moving blades 10 to move simultaneously and perform the wire-cutting action.
[0048] Of course, it is understood that in some embodiments, there may be three, four, five or more connecting rods between the connecting block 21 and the rotating shaft 24, so that the rotating shaft 24 can rotate on its own through multiple connecting rods. This embodiment does not limit the number of connecting rods.
[0049] As a possible implementation, one of the rotating shaft 24 and the mounting shaft 28 is integrally formed with the first rocker arm 25 or is separately set; the other is integrally formed with the second rocker arm 27 or is separately set.
[0050] like Figure 3As shown, the rotating shaft 24 is integrally formed with the first rocker arm 25, and the mounting shaft 28 is integrally formed with the second rocker arm 27. This facilitates the machining of the first rocker arm 25, the second rocker arm 27, the rotating shaft 24, and the mounting shaft 28, thereby reducing machining costs.
[0051] As an implementation method, the first rocker arm 25 is provided with a first anti-rotation protrusion 251, which passes through the moving blade 10 connected to the first rocker arm 25; the second rocker arm 27 is provided with a second anti-rotation protrusion 271, which passes through the moving blade 10 connected to the second rocker arm 27.
[0052] like Figure 3 As shown, the movable blade 10 has a first through hole 11 and a second through hole 12. The mounting shaft 28 passes through the second rocker arm 27 and the first through hole 11 of the movable blade 10 located on the left side. A second anti-rotation protrusion 271 is provided on the surface of the second rocker arm 27 near the movable blade 10, and the second anti-rotation protrusion 271 is inserted into the second through hole 12 of the movable blade 10. In this way, through the two connection positions of the first through hole 11 and the second through hole 12, the left movable blade 10 is fixedly connected to the second rocker arm 27, preventing the movable blade 10 from rotating relative to the second rocker arm 27.
[0053] Similarly, the rotating shaft 24 passes through the first rocker arm 25 and the first through hole 11 of the right-side movable blade 10. A first anti-rotation protrusion 251 is provided on the surface of the first rocker arm 25 near the movable blade 10, and the first anti-rotation protrusion 251 is inserted into the second through hole 12 of the movable blade 10. In this way, through the two connection positions of the first through hole 11 and the second through hole 12, the right-side movable blade 10 is fixedly connected to the first rocker arm 25, preventing the movable blade 10 from rotating relative to the first rocker arm 25.
[0054] As one possible implementation, the first rocker arm 25 is provided with a first mounting notch 252, and the second rocker arm 27 is provided with a second mounting notch 272, with the second mounting notch 272 located on the same side as the first mounting notch 252. A first hinge protrusion 253 is provided at the first mounting notch 252, and a second hinge protrusion 273 is provided at the second mounting notch 272. The two ends of the first connecting rod 26 are respectively hinged to the first hinge protrusion 253 and the second hinge protrusion 273.
[0055] like Figure 3 As shown, the lower surface of the rear end of the first rocker arm 25 is recessed to form a first mounting notch 252, and a first hinge protrusion 253 is provided at the first mounting notch 252. One end of the first rocker arm 25 is hinged to the first hinge protrusion 253. The lower surface of the rear end of the second rocker arm 27 is recessed to form a second mounting notch 272, and a second hinge protrusion 273 is provided at the second mounting notch 272. The other end of the first rocker arm 25 is hinged to the second hinge protrusion 273. In this way, the overall height of the dual rocker arm mechanism is reduced.
[0056] This utility model also provides a computerized embroidery machine, including the aforementioned thread-cutting device. This computerized embroidery machine has the advantage of a thread-cutting device. In this application, at least two moving blades 10 are connected to a linkage mechanism 20, and a pull rod 30 allows the linkage mechanism 20 to simultaneously drive each moving blade 10 to perform thread-cutting actions.
[0057] For example, the linkage mechanism 20 includes a double rocker mechanism, with at least two moving blades 10 connected to the first connecting rod 26 of the double rocker mechanism. Each moving blade 10 can be driven by a single double rocker mechanism, meaning that multiple cutting heads can each have a corresponding double rocker mechanism. Even in scenarios where the distance between two adjacent cutting heads is small, a single double rocker mechanism can be installed, and the movement of the double rocker mechanism will not be affected by the small distance, thus ensuring that each moving blade 10 stably performs the wire-cutting action. Simultaneously, this also facilitates the assembly of the wire-cutting device, improving its assembly efficiency.
[0058] It should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used above to indicate orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0059] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the utility model involved in this application is not limited to the technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.
Claims
1. A wire-cutting device, characterized in that, include Multiple wire-cutting units (a) are arranged in the same direction. Each wire-cutting unit (a) includes a linkage mechanism (20) and at least two moving blades (10), each of which is connected to the linkage mechanism (20). A pull rod (30) is parallel to the arrangement direction of the wire cutting unit (a) along its length. Each of the linkage mechanisms (20) is connected to the pull rod (30). The pull rod (30) reciprocates along its length, causing the linkage mechanism (20) to drive each of the corresponding moving blades (10) to perform wire cutting.
2. The wire-cutting device according to claim 1, characterized in that, The linkage mechanism (20) includes a first connecting rod (26), a first rocker arm (25) and a second rocker arm (27) hinged to both ends of the first connecting rod (26), the other end of the first rocker arm (25) being hinged, and the other end of the second rocker arm (27) being hinged. One of the moving blades (10) is fixedly connected to the first rocker arm (25), and the other moving blade (10) is fixedly connected to the second rocker arm (27). One of the first rocker arm (25) and the second rocker arm (27) swings, causing the two moving blades (10) to perform a wire-cutting action.
3. The wire-cutting device according to claim 2, characterized in that, The linkage mechanism (20) also includes a mounting shaft (28) and a rotating shaft (24). One of the rotating shaft (24) and the mounting shaft (28) is inserted through the other end of the first rocker arm (25), and the other is inserted through the other end of the second rocker arm (27).
4. The wire-cutting device according to claim 3, characterized in that, One of the rotating shaft (24) and the mounting shaft (28) is integrally formed with the first rocker arm (25) or separately set; the other is integrally formed with the second rocker arm (27) or separately set.
5. The wire-cutting device according to claim 3, characterized in that, The first rocker arm (25) is provided with a first mounting notch (252), and the second rocker arm (27) is provided with a second mounting notch (272). The second mounting notch (272) is located on the same side as the first mounting notch (252). A first hinge protrusion (253) is provided at the first mounting notch (252), and a second hinge protrusion (273) is provided at the second mounting notch (272). The two ends of the first connecting rod (26) are respectively hinged to the first hinge protrusion (253) and the second hinge protrusion (273).
6. The wire-cutting device according to claim 3, characterized in that, The first rocker arm (25) is provided with a first anti-rotation protrusion (251), and the first anti-rotation protrusion (251) passes through the moving blade (10) connected to the first rocker arm (25); The second anti-rotation protrusion (271) on the second rocker arm (27) passes through the moving blade (10) connected to the second rocker arm (27).
7. The wire-cutting device according to any one of claims 3-6, characterized in that, The linkage mechanism further includes a second connecting rod (22), a third connecting rod (23), and a connecting block (21). The connecting block (21) is sleeved on the pull rod (30). One end of the second connecting rod (22) is hinged to the connecting block (21), and the other end is hinged to one end of the third connecting rod (23). The other end of the third connecting rod (23) is connected to the rotating shaft (24). The pull rod (30) reciprocates along its length, enabling the rotating shaft (24) to rotate.
8. The wire-cutting device according to any one of claims 3-6, characterized in that, The axis of the rotating shaft (24) extends in the vertical direction, and multiple rotating shafts (24) are arranged at equal intervals in the same direction.
9. The wire-cutting device according to claim 2, characterized in that, The linkage mechanism (20) further includes a rocker arm (29) located between the two ends of the first connecting rod (26), and the moving blade (10) is fixedly connected to the rocker arm (29).
10. A computerized embroidery machine, characterized in that, The wire-cutting device includes any one of claims 1-9.