Thread guide, embroidery machine head and embroidery machine

Abstract

The utility model relates to the technical field of embroidery equipment, and more specifically to a thread sleeve, an embroidery machine head and an embroidery machine. The thread sleeve comprises a sleeve body, which has an overlapping surface that contacts with the embroidery thread and is overlapped by the embroidery thread; at least part of the overlapping surface is an arc surface, and a thread sleeve part is convexly provided on the overlapping surface, and the thread sleeve part is provided with a limiting hole for the embroidery thread to pass through. The thread sleeve is provided in the embroidery machine for overlapping the embroidery thread and for supporting the overlapped embroidery thread, and the overlapped embroidery thread can be limited to improve the stability of the embroidery thread during the threading process.

Description

Technical Field

[0001] The utility model relates to the technical field of embroidery equipment, and more specifically to a thread sleeve, an embroidery machine head and an embroidery machine. Background Art

[0002] In an embroidery machine, the distance between the spool of the embroidery machine and the embroidery needle is relatively long. In order to keep the embroidery thread in a moderately tight state, to avoid the embroidery thread from getting tangled and to make the thread run smoothly, the embroidery thread needs to be supported to make the embroidery thread tight. In the prior art, a protruding column structure is often provided on the housing, and the embroidery thread is overlapped on the column structure, so that the column structure supports the embroidery thread to prevent the embroidery thread from falling, so as to keep the embroidery thread in a moderately tight state.

[0003] It should be noted that there is no limiting structure on the column structure. When the embroidery thread is overlapped on the column structure (especially in the high-speed embroidery state, when the embroidery thread is overlapped on the column structure in a moving state), it is easy for the embroidery thread to deviate too much on the column structure; causing the embroidery thread to easily fall off the column structure, or several embroidery threads to easily deviate close to each other and become entangled; which in turn causes major problems with the stability of the embroidery thread during the routing process, which can easily hinder the operation of the embroidery machine. Utility Model Content

[0004] One of the purposes of the utility model is to address the deficiencies of the prior art and to provide: a thread guide for overlapping embroidery threads in an embroidery machine and for supporting the overlapping embroidery threads, which can limit the overlapping embroidery threads to improve the stability of the embroidery threads during the threading process.

[0005] The second purpose of the utility model is to provide: an embroidery machine head having the thread sleeve to improve the thread running stability.

[0006] The third purpose of the utility model is to provide an embroidery machine having the above-mentioned thread sleeve or the head of the above-mentioned embroidery machine.

[0007] The technical solutions of the utility model are as follows:

[0008] The thread guide is used to support the embroidery thread in the embroidery machine. The thread guide includes:

[0009] The sleeve body has: an overlapping surface for contacting with the embroidery thread and for overlapping the embroidery thread;

[0010] At least part of the overlapping surface is an arc-shaped surface, and a thread sleeve portion is convexly arranged on the overlapping surface, and a limiting hole for the embroidery thread to pass through is arranged on the thread sleeve portion.

[0011] Further as a preferred solution, one side of the overlapping surface is provided with: a first limiting wall connected to the overlapping surface;

[0012] The first limiting wall is configured to prevent the embroidery thread from detaching from the overlapping surface from one side of the overlapping surface when the embroidery thread is overlapped on the overlapping surface.

[0013] As a further preferred solution, the other side of the overlapping surface is provided with: a second limiting wall connected to the overlapping surface;

[0014] The second limiting wall is configured to: when an embroidery thread is overlapped on the overlap surface, prevent the embroidery thread from detaching from the overlap surface from the other side of the overlap surface;

[0015] Furthermore, a spacing between the first limiting wall and the second limiting wall forms a limiting channel for the embroidery thread to run.

[0016] As a further preferred solution, the wire sleeve portion includes: a portion extending to the first limiting wall and engaging with the first limiting wall.

[0017] As a further preferred solution, the sleeve body is formed by a bent rod;

[0018] Furthermore, the outer side surface of the curved rod is an overlapping surface for the embroidery thread to overlap.

[0019] The head of the embroidery machine comprises the thread guide sleeve in any of the above solutions.

[0020] As a further preferred solution, the head of the embroidery machine also includes a shell, and the thread sleeve is detachably fixed to the shell of the head.

[0021] As a further preferred solution, the head of the embroidery machine also includes a needle bar, and a plurality of cavities are arranged inside the needle bar.

[0022] As a further preferred embodiment, the head of the embroidery machine further comprises: a connecting rod drivingly connected to the cam so as to swing when the cam rotates;

[0023] One end of the connecting rod has a plug-in portion, which can be inserted into the slot at the end of the thread take-up rod, so that when the connecting rod swings, it can drive the thread take-up rod to swing synchronously;

[0024] The plug-in part comprises a mounting shaft, on which a bearing is sleeved, so that one end of the connecting rod is connected with the inner wall of the clamping groove through a rotatable outer ring in the bearing.

[0025] An embroidery machine comprises the thread guide sleeve in any of the above schemes, or comprises the head of the embroidery machine in any of the above schemes.

[0026] The main beneficial effects of the above technical solution are:

[0027] A thread sleeve with limiting holes is provided on a sleeve body for overlapping embroidery threads and for supporting the overlapping embroidery threads, so that the overlapping embroidery threads can be limited, thereby preventing the embroidery threads from being excessively deviated during the running process, and improving the stability of the embroidery threads during the running process.

[0028] Further or more detailed beneficial effects will be described in detail in conjunction with specific examples in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The utility model is further described below in conjunction with the accompanying drawings:

[0030] Figure 1 Schematic diagram of the wire sleeve structure Figure 1 .

[0031] Figure 2 Schematic diagram of the wire sleeve structure Figure 2 .

[0032] Figure 3 This is a schematic diagram of the embroidery thread routing when it is overlapped on the thread guide.

[0033] Figure 4 This is an exploded schematic diagram of the embroidery machine head assembly structure.

[0034] Figure 5 It is the assembly diagram of the wire sleeve in the wire passing device.

[0035] Figure 6 Schematic diagram of needle bar structure.

[0036] Figure 7 This is a schematic diagram of the thread take-up lever structure.

[0037] As shown in the figure: embroidery thread-a, thread sleeve-1, sleeve body-1.1, overlapping surface-1.11, thread sleeve part-1.2, limiting hole-1.21, first limiting wall-1.3, second limiting wall-1.4, limiting channel-1.5, needle bar-2, weight reduction hole-2.1, end cover-2.2, cam-3, connecting rod-4, plug-in part-4.1, installation shaft-4.11, bearing-4.12, thread taking-up rod-5, slot-5.1, linkage rod-6, rotating shaft-7, thread passing device-8. DETAILED DESCRIPTION

[0038] The present invention is specifically described below with reference to the embodiments:

[0039] Example:

[0040] When an embroidery machine is doing embroidery work, it is necessary to arrange the embroidery thread. In order to make the embroidery thread run stably and smoothly, holes for the embroidery thread to pass through are often set according to the thread trajectory of the embroidery thread. However, the holes for the embroidery thread to run through often cannot cover every part of the embroidery thread. For example, in the head of the embroidery machine, the distance from the embroidery machine bobbin to the embroidery needle is relatively long, resulting in a part of the embroidery thread that naturally droops under the action of gravity. Therefore, the embroidery machine needs to be provided with a support structure to support the embroidery thread so that the embroidery thread can maintain a moderately tight state.

[0041] During the embroidery process, the embroidery thread needs to be routed at high speed. If the embroidery thread is directly routed according to its trajectory, a column is set at the sagging part of the embroidery thread to support the embroidery thread so that the embroidery thread can be kept in a moderately tight state. When the embroidery thread is routed, it is easy for the embroidery thread to fall off the column structure, or several embroidery threads are easy to deviate and get entangled with each other, which leads to a big problem in the stability of the embroidery thread during the routing process.

[0042] Based on this, the present embodiment proposes a thread sleeve 1 for supporting the embroidery thread a in the embroidery machine.

[0043] It should be noted first that the specific position of the thread sleeve 1 in the embroidery machine is set according to the trajectory of the embroidery thread a, so that when the thread sleeve 1 is installed in the embroidery machine, the embroidery thread a can be overlapped on the thread sleeve 1, and at the same time, the thread sleeve 1 can support the embroidery thread a so that the embroidery thread a can maintain a moderately tight state.

[0044] As attached Figure 1 To Attachment Figure 3 As shown, the thread sleeve 1 in this embodiment includes a sleeve body 1.1, and the sleeve body 1.1 has an overlapping surface 1.11 that contacts with the embroidery thread a and is overlapped by the embroidery thread a. In order to keep the thread running smoothly and reduce the wear of the embroidery thread a, at least part of the overlapping surface 1.11 is preferably an arc surface.

[0045] At the same time, a thread sleeve portion 1.2 is raised on the overlapping surface 1.11, and a limiting hole 1.21 is provided on the thread sleeve portion 1.2 for the embroidery thread a to pass through. The extension direction of the limiting hole 1.21 is set by technical personnel based on the routing trajectory of the embroidery thread a in actual conditions, and is not specifically limited here.

[0046] Implementation as attached Figure 3 , Attachment Figure 5 As shown in the figure, when the thread sleeve 1 is set in the embroidery machine, the embroidery thread a can be overlapped on the overlapping surface 1.11 of the sleeve body 1.1, and the embroidery thread a overlapped on the overlapping surface 1.11 is inserted into the limiting hole 1.21, so as to limit the overlapping embroidery thread a, prevent the embroidery thread a from being excessively deviated during the routing, and improve the stability of the embroidery thread a during the routing process.

[0047] The sleeve 1.1 can be any structure for the embroidery thread a to overlap. In this embodiment, in order to reduce the weight and material cost of the sleeve 1.1, the arc surface setting of the overlapping surface 1.11 is taken into consideration. The sleeve 1.1 is not set as a disc structure, but is preferably formed by a curved rod; and the outer side surface of the curved rod is the overlapping surface 1.11 for the embroidery thread a to overlap.

[0048] Furthermore, in order to better limit the embroidery thread a overlapped on the overlapping surface 1.11, it is prevented that the embroidery thread a is separated or entangled with other thread bundles.

[0049] In this embodiment, as shown in the attached Figure 1 and attached Figure 2 As shown in , a first limiting wall 1.3 connected to the overlapping surface 1.11 can be provided on one side of the overlapping surface 1.11; the first limiting wall 1.3 is configured to prevent the embroidery thread a from detaching from the overlapping surface 1.11 from one side of the overlapping surface 1.11 when the embroidery thread a is overlapped on the overlapping surface 1.11.

[0050] As attached Figure 1 and attached Figure 2 As shown in the figure, a second limiting wall 1.4 connected to the overlapping surface 1.11 may also be provided on the other side of the overlapping surface 1.11; the second limiting wall 1.4 is configured to prevent the embroidery thread a from detaching from the overlapping surface 1.11 from the other side of the overlapping surface 1.11 when the embroidery thread a is overlapped on the overlapping surface 1.11.

[0051] When the first limiting wall 1.3 and the second limiting wall 1.4 are provided at the same time, the interval between the first limiting wall 1.3 and the second limiting wall 1.4 forms a limiting channel 1.5 for the embroidery thread a to be routed. The embroidery thread a overlapped on the overlap surface 1.11 is routed in the limiting channel 1.5, so that the embroidery thread a can be better limited.

[0052] Furthermore, in this embodiment, the wire sleeve part 1.2 has a part extending to the first limiting wall 1.3 and engaging with the first limiting wall 1.3. That is, the wire sleeve part 1.2 has a part extending to the first limiting wall 1.3, and the part is connected to the first limiting wall 1.3 by screws or glue, etc., so as to achieve engagement with the first limiting wall 1.3; or the part is connected to the first limiting wall 1.3 as a whole, so as to achieve engagement with the first limiting wall 1.3. This improves the structural stability of the wire sleeve part 1.2 and reduces the possibility of damage to the wire sleeve part 1.2 due to the wire sleeve 1 falling or collision.

[0053] The thread guide sleeve 1 can be arranged at any position in the embroidery machine according to needs.

[0054] As attached Figure 4As shown, the thread sleeve 1 can be arranged in the head of the embroidery machine to form the head of the embroidery machine with the thread sleeve 1.

[0055] Furthermore, the head of the embroidery machine also includes a housing, and the thread sleeve 1 is preferably detachably fixed to the housing of the head (a housing formed by a structure such as a bracket or shell of the head of the embroidery machine) by, for example, screws, so as to facilitate the repair and replacement of the thread sleeve 1 during the later maintenance process. Specifically, in this embodiment, the thread sleeve 1 is preferably detachably fixed to the housing of the thread passing device 8.

[0056] On the basis of the above, in order to better adapt to high-speed embroidery movements.

[0057] In this embodiment, a plurality of cavities (one or more cavities) are provided inside the needle bar 2 of the head of the embroidery machine to reduce the weight of the needle bar 2 and the embroidery resistance.

[0058] Specifically, for example Figure 6 As shown in the figure, in this embodiment, a weight-reducing hole 2.1 with an upward opening is provided at the upper end of the needle bar 2, the internal space of the weight-reducing hole 2.1 forms the above-mentioned cavity, and an end cap 2.2 for sealing the opening of the weight-reducing hole 2.1 is detachably connected to the upper end of the needle bar 2. The end cap 2.2 is detachably embedded in the opening of the weight-reducing hole 2.1, or the end cap 2.2 is inserted into the opening of the weight-reducing hole 2.1, and is screwed to the side wall of the weight-reducing hole 2.1 through a threaded structure.

[0059] By providing a weight-reducing hole 2.1 and sealing the weight-reducing hole 2.1 with a detachable end cover 2.2, not only the weight of the needle bar 2 can be reduced, but also the end cover 2.2 can be opened to fill the weight-reducing hole 2.1 with a weight-increasing object when weight-increasing is required to increase the weight of the needle bar 2.

[0060] At the same time, the head of the existing embroidery machine includes a thread take-up rod 5 and a connecting rod 4 for driving the thread take-up rod 5 to swing. In order to enable the connecting rod 4 to drive the thread take-up rod 5 more smoothly during high-speed embroidery, the connecting rod 4 is preferably connected to the thread take-up rod 5 through a bearing 4.12 that can roll smoothly to reduce the possibility of jamming when the connecting rod 4 drives the thread take-up rod 5 to swing.

[0061] Specifically, as attached Figure 7 As shown, the connecting rod 4 is connected to the cam 3 in a transmission manner so as to swing when the cam 3 rotates. Specifically, one end of the connecting rod 4 is fixed to a rotating shaft 7 that is rotatably connected to the head housing of the embroidery machine, and a linkage rod 6 is also fixed to the rotating shaft 7, and one end of the linkage rod 6 is placed in a groove arranged at the outer edge of the cam 3, and the cam 3 is connected to the rotating motor in a transmission manner.

[0062] Implementation: The rotating motor drives the cam 3 to rotate, thereby driving the linkage rod 6 to swing, and driving the rotating shaft 7 to rotate, so as to drive the connecting rod 4 to swing.

[0063] Meanwhile, one end of the connecting rod 4 has an inserting portion 4.1, which can be inserted into a slot 5.1 at the end of the thread take-up lever 5, so that when the connecting rod 4 swings, the thread take-up lever 5 can be driven to swing synchronously.

[0064] Specifically, the thread take-up lever 5 is rotatably connected to a long axis, and a slot 5.1 is provided at one end of the thread take-up lever 5 facing the connecting rod 4, and the plug-in portion 4.1 at one end of the connecting rod 4 is inserted into the slot 5.1, so that when the connecting rod 4 swings, it can synchronously drive the thread take-up lever 5 to swing.

[0065] The plug-in portion 4.1 comprises a mounting shaft 4.11, on which a bearing 4.12 is sleeved, and one end of the connecting rod 4 is connected to the inner wall of the slot 5.1 through a rotatable outer ring of the bearing 4.12.

[0066] The above is only a preferred embodiment of the utility model, and does not limit the scope of the utility model. In addition, the terms "vertical", "horizontal", "front", "rear", etc. mentioned in the embodiments of the utility model indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the utility model. It should be further explained that, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like in the description should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances. The utility model will be described in detail with reference to the drawings and in combination with the embodiments.

[0067] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A thread guide, used to support the embroidery thread (a) in an embroidery machine, characterized in that: The wire guide sleeve (1) includes: The sleeve (1.1) comprises: an overlapping surface (1.11) in contact with the embroidery thread (a) and for the embroidery thread (a) to overlap; At least part of the overlapping surface (1.11) is an arcuate surface, and a thread sleeve portion (1.2) is convexly provided on the overlapping surface (1.11), and a limiting hole (1.21) is provided on the thread sleeve portion (1.2) for the embroidery thread (a) to pass through.

2. The wire guide sleeve according to claim 1, characterized in that: One side of the overlapping surface (1.11) is provided with: a first limiting wall (1.3) connected to the overlapping surface (1.11); The first limiting wall (1.3) is configured to prevent the embroidery thread (a) from detaching from the overlapping surface (1.11) from one side of the overlapping surface (1.11) when the embroidery thread (a) is overlapped on the overlapping surface (1.11).

3. The wire guide sleeve according to claim 2, characterized in that: The other side of the overlapping surface (1.11) is provided with: a second limiting wall (1.4) connected to the overlapping surface (1.11); The second limiting wall (1.4) is configured to: when an embroidery thread (a) is overlapped on the overlap surface (1.11), prevent the embroidery thread (a) from detaching from the overlap surface (1.11) from the other side of the overlap surface (1.11); Furthermore, the interval between the first limiting wall (1.3) and the second limiting wall (1.4) forms a limiting channel (1.5) for the embroidery thread (a) to run.

4. The wire guide sleeve according to claim 2, characterized in that: The wire sleeve portion (1.2) comprises a portion extending to the first limiting wall (1.3) and engaging with the first limiting wall (1.3).

5. The wire guide sleeve according to any one of claims 1 to 4, characterized in that: The sleeve (1.1) is formed by a bent rod; Furthermore, the outer side surface of the curved rod is the overlapping surface (1.11) for the embroidery thread (a) to overlap.

6. The head of the embroidery machine is characterized by: It comprises a wire sleeve (1) as described in any one of claims 1 to 5.

7. The embroidery machine head according to claim 6, characterized in that: The head of the embroidery machine also includes a shell, and the thread guide sleeve (1) is detachably fixed to the shell of the head.

8. The embroidery machine head according to any one of claims 6 to 7, characterized in that: The head of the embroidery machine also includes a needle bar (2), and a plurality of cavities are arranged inside the needle bar (2).

9. The embroidery machine head according to any one of claims 6 to 7, characterized in that: The head of the embroidery machine also includes: a connecting rod (4) which is transmission-connected to the cam (3) so as to be able to swing when the cam (3) rotates; One end of the connecting rod (4) has a plug-in portion (4.1), and the plug-in portion (4.1) can be inserted into a slot (5.1) at the end of the thread take-up lever (5), so that when the connecting rod (4) swings, it can drive the thread take-up lever (5) to swing synchronously; The plug-in portion (4.1) comprises a mounting shaft (4.11), and a bearing (4.12) is sleeved on the mounting shaft (4.11), so that one end of the connecting rod (4) is connected to the inner wall of the slot (5.1) through a rotatable outer ring in the bearing (4.12).

10. Embroidery machine, characterized in that: A thread guide sleeve (1) comprising any one of claims 1 to 5, or an embroidery machine head comprising any one of claims 6 to 9.

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