Needle bar assembly, head assembly having the same, and embroidery machine

Abstract

The utility model relates to embroidery technical field more specifically relates to needle bar assembly, the machine head assembly with this component and embroidery machine. Among them, needle bar assembly includes needle bar, its inside cavityly forms has the wire passing hole, the wire passing hole upper end extends to the needle bar surface and forms has the wire inlet, lower end extends to the needle bar surface and forms has the wire outlet, is connected with the wire passing buckle on the needle bar, it has the part that forms with the convex on the needle bar surface, this part covers the wire inlet outside, and has: the lead hole for the surface line to enter the wire inlet from the needle bar external space, the wire passing buckle has the first side face that is opposite to the wire inlet, the lead hole one end is located at this first side face, and the inner wall edge of this end is rounded and forms: the first arc surface guide wire wall that guides the surface line outside the needle bar to enter the lead hole. To form: through the optimization surface line's wiring guide to reduce the surface line clamping wear possibility, improve the needle bar assembly of the smoothness of wiring.

Description

Technical Field

[0001] This utility model relates to the field of embroidery technology, and more specifically to embroidery equipment capable of optimizing and guiding the fabric lines. Background Technology

[0002] An embroidery machine is a device used for embroidery, including a needle bar for mounting needles to perform embroidery actions. To prevent the thread from being pulled during embroidery, existing technologies typically employ internal thread routing within the needle bar to reduce the risk of thread pulling. However, in practice, it has been found that the thread is still prone to problems such as poor routing or even breakage, causing the embroidery machine's efficiency to fall short of expectations. Utility Model Content

[0003] One of the purposes of this utility model is to address the shortcomings of the prior art by providing a needle bar assembly that reduces the possibility of wear on the surface thread by optimizing the thread routing guide and improving the smoothness of the thread routing.

[0004] The second objective of this utility model is to provide a head assembly having the above-mentioned needle bar assembly, which can reduce the possibility of wear on the thread clamping and improve the smoothness of thread routing.

[0005] The third objective of this utility model is to provide an embroidery machine having the above-mentioned head assembly to improve the overall embroidery efficiency.

[0006] The overall technical solution of this utility model is as follows:

[0007] The needle bar assembly of this utility model is based on the problem that the thread is prone to poor flow or even breakage. Specifically, the thread needs to enter the needle bar through the opening on the needle bar. At this time, the part of the thread outside the needle bar is prone to contact friction with the outer surface of the needle bar. When the thread enters the needle bar through the opening, it is also prone to excessive friction with the edge of the opening, resulting in excessive pulling and wear, which leads to poor thread flow or even breakage. As a result, the embroidery efficiency of the embroidery machine is difficult to reach the expected level.

[0008] Based on this, the present invention proposes a needle bar assembly, which includes a needle bar, the inside of which is hollow and forms a thread passage, the upper end of which extends to the surface of the needle bar and forms a thread inlet, and the lower end of which extends to the surface of the needle bar and forms a thread outlet.

[0009] The needle bar is connected to a thread guide, which has a raised portion forming on the surface of the needle bar, covering the outside of the thread inlet, and has a thread guide hole for the thread to enter the thread inlet from the external space of the needle bar;

[0010] The wire guide buckle has a first side facing away from the wire inlet, one end of the lead hole is located on the first side, and the inner wall edge of the port is rounded to form a first arc-shaped wire wall that guides the wire outside the needle bar into the lead hole.

[0011] By incorporating a thread guide, the top thread can be guided into the needle bar for flow. The thread guide has a raised portion on its surface that lifts the top thread, reducing friction between the thread and the needle bar surface, thus minimizing frictional resistance during thread flow and improving thread smoothness. Simultaneously, the inner wall of the thread inlet at the thread guide is rounded to smoothly guide the top thread, reducing pulling and further improving thread flow.

[0012] In some embodiments, the wire guide has a second side facing the wire inlet, another port of the lead hole is located on the second side, and the inner wall edge of the port is formed with rounded corners to form a second arc-shaped conductor wall that guides the wire in the lead hole into the wire inlet.

[0013] By rounding the inner wall of the lead wire outlet, the smooth guidance of the lead wire is further achieved, reducing the pulling of the lead wire and improving the smoothness of the wiring.

[0014] At this point, the wire guide buckle, as a component that directly contacts the surface wire, is prone to wear during long-term use. This wear can cause the rounded corner structure of the arc-shaped wire wall to fail to smoothly guide the surface wire, and instead hinder the flow of the surface wire. Therefore, it is preferable to make the wire guide buckle detachable, so as to facilitate the individual replacement of the wire guide buckle and reduce the maintenance cost in the later stage.

[0015] In some embodiments, the needle bar assembly further includes:

[0016] A fixing arm positioned on one side of the needle bar;

[0017] A connecting arm located on the other side of the needle bar;

[0018] The thread guide is mounted on the connecting arm, and one end of the connecting arm is rotatably connected to one end of the fixed arm. The other end of the connecting arm is fixed to the other end of the fixed arm by a fastening screw, so that the thread guide can be detachably fixed to the needle bar.

[0019] Of course, the wire clip can be fixed by a screw-type detachable connection method, as mentioned above, but this method is complicated and difficult to install and remove.

[0020] Therefore, as a preferred embodiment, in some implementations, the thread guide is detachably connected to the needle bar via a snap-fit ​​structure. This snap-fit ​​structure allows for detachable installation and removal of the thread guide, making it easier to assemble, disassemble, and maintain.

[0021] Furthermore, in some embodiments, the fastening structure includes:

[0022] The first snap arm, which is set on the wire guide and has elasticity, is a first snap arm.

[0023] And a second snap-fit ​​arm that is set on the wire fastener and has elasticity;

[0024] The first and second connecting arms are respectively placed on both sides of the needle bar so that they can be clamped and fastened to the needle bar together, thereby detachably clamping and fastening the thread pass to the needle bar.

[0025] Based on the above solution, it is further considered that the thread may be easily bent excessively when flowing through the needle bar, which may cause the thread to exit unsmoothly.

[0026] Based on this, in some embodiments, the wire passage has a guide wall that is configured to guide the wire inside the wire passage toward the outlet in an inclined manner.

[0027] By setting an inclined drainage wall, the surface thread in the needle bar can be guided out more smoothly, improving the smoothness of thread exit.

[0028] Furthermore, in some embodiments, the needle bar surface is provided with a wire groove located below the wire outlet;

[0029] The wire groove extends vertically and is arranged in a continuous vertical direction. Its upper groove extends to the flow wall, and its lower groove extends to the lower end wall of the needle rod.

[0030] In response to the need to install embroidery needles at the bottom of the needle bar, a guide channel is designed to more accurately guide the thread flowing out of the needle bar downwards, reducing the possibility of the thread getting tangled with other parts outside the needle bar, which could lead to uneven threading.

[0031] Furthermore, a guide wire is provided at the lower end of the needle bar, which has a portion located below the guide wire groove and opposite to the lower end opening of the guide wire groove. This portion is provided with a guide wire hole for the top wire in the guide wire groove to pass downward.

[0032] By setting a guide hole for the thread to pass through, the restriction on the flow path of the thread is enhanced, further improving the accuracy of guiding the thread direction and reducing the possibility of the thread getting tangled with other parts outside the needle bar, which would cause the thread to run unevenly.

[0033] The guide wire can be non-detachably connected to the needle bar, or it can be detachably fixed to the needle bar by means of a structure such as screws.

[0034] Preferably, in some embodiments, the guide wire is configured to be detachably fitted into the fastening portion of the needle bar. This detachable installation of the guide wire allows for easier disassembly and maintenance.

[0035] This utility model further proposes a machine head assembly having the needle bar assembly described in any of the above-mentioned schemes; by setting the needle bar assembly, the possibility of wear on the thread clamping position can be reduced and the smoothness of thread routing can be improved.

[0036] This utility model further proposes an embroidery machine having the above-mentioned head assembly; by setting the above-mentioned head assembly, the smoothness of thread feeding can be improved, the frequency of thread breakage can be reduced, and thus the overall embroidery efficiency can be improved.

[0037] The main beneficial effects of the above technical solution are as follows:

[0038] 1. By setting a thread guide, the surface thread can be lifted to reduce frictional contact between the surface thread and the needle bar surface, reduce frictional resistance during the thread flow process, and improve thread smoothness; at the same time, it can also smoothly guide the surface thread, reduce pulling on the surface thread, and improve thread smoothness.

[0039] 2. By rounding the inner walls of both ends of the lead hole, the smooth guidance of the opposite wire is further optimized, which can better reduce the pulling of the opposite wire and improve the smoothness of the wiring.

[0040] 3. The wire pass buckle is detachable and can be installed using a snap-fit ​​structure, making it easier to disassemble and maintain.

[0041] 4. By setting up a drainage wall, the surface thread in the needle bar can be guided out more smoothly, improving the smoothness of thread exit.

[0042] 5. A guide channel is provided to more accurately guide the top thread flowing out of the needle bar downwards, reducing the possibility of the top thread getting tangled with other parts outside the needle bar, which could cause uneven thread routing.

[0043] 6. By setting a thread guide with a thread guide hole, the accuracy of guiding the direction of the face thread is further improved, and the possibility of the face thread getting tangled with other parts other than the needle bar, which would cause the thread to be uneven.

[0044] 7. The mounting structure allows for the detachable installation of the guide wire, making it easier to disassemble and maintain the guide wire.

[0045] 8. By incorporating a needle bar assembly in the head assembly that optimizes the orientation of the guide, the potential for wear on the thread clamping point can be reduced, and the smoothness of the thread routing can be improved.

[0046] 9. By incorporating a head assembly in the embroidery machine that reduces wear on the thread and improves the smoothness of the stitching, the frequency of thread breakage can be reduced, thereby improving the overall embroidery efficiency of the embroidery machine. Attached Figure Description

[0047] The present invention will be further described below with reference to the accompanying drawings:

[0048] Figure 1 This is a schematic diagram of an overall structure of the needle bar assembly.

[0049] Figure 2 This is a schematic diagram of one method of fixing a wire clip.

[0050] Figure 3 This is a schematic diagram of another overall structure of the needle bar assembly.

[0051] Figure 4 This is a diagram illustrating another method of securing the wire clip.

[0052] Figure 5 This is a cross-sectional view of the wire-connecting buckle structure.

[0053] Figure 6 This is a schematic diagram of the fastening structure of the wire-passing buckle.

[0054] Figure 7 A schematic diagram of the wire channel setup.

[0055] Figure 8 This is a schematic diagram of the installation structure for the guide wire.

[0056] Figure 9 This is a cross-sectional view of the lower end of the needle shaft.

[0057] Figure 10 This is a schematic diagram of the engine head assembly. Detailed Implementation

[0058] The present invention will be illustrated with specific examples below:

[0059] Example 1:

[0060] A needle bar assembly is a component used in embroidery equipment such as embroidery machines to mount embroidery needles for embroidery operations. (See attached image.) Figure 1 As shown, it includes a vertically extending needle bar 1, with a hollow cavity forming a thread passage 1.1 inside the needle bar 1. The upper end of the thread passage 1.1 extends to the surface of the needle bar 1 to form an inlet 1.2 on the surface of the needle bar 1 for communicating with the external space of the needle bar 1; the lower end extends to the surface of the needle bar 1 to form an outlet 1.3 on the surface of the needle bar 1 for communicating with the external space of the needle bar 1.

[0061] When the needle bar assembly is installed in an embroidery machine, the thread for embroidery enters the thread passage 1.1 from the thread inlet 1.2, flows out from the thread outlet 1.3 after passing through the thread passage 1.1, and is threaded into the embroidery needle at the bottom of the needle bar 1 to perform the embroidery work.

[0062] As attached Figure 1 To be continued Figure 9 As shown, in this embodiment, a thread catcher 2 is connected to the needle bar 1, which has a protruding portion formed on the surface of the needle bar 1 (when viewed from one end of the needle bar 1 along the axis of the needle bar 1, the thread catcher 2 has a portion protruding beyond the outer periphery of the needle bar 1). This portion covers the outside of the thread inlet 1.2 and has a thread guide hole 2.1 for the thread to enter the thread inlet 1.2 from the external space of the needle bar 1.

[0063] The thread guide 2 can be fixed to the needle bar 1 by means of, for example, screws.

[0064] For example, attached Figure 2 As shown, the needle bar 1 has a fixed arm 2.9 on one side and a connecting arm 2.8 on the other side. The thread guide 2 is disposed on the connecting arm 2.8. For example, the connecting arm 2.8 has a through slot, and the thread guide 2 is adapted to be fitted into the slot. Furthermore, one end of the connecting arm 2.8 is rotatably connected to one end of the fixed arm 2.9, and the other end of the connecting arm 2.8 is fixed to the other end of the fixed arm 2.9 by a fastening screw 2.10, so as to detachably fix the thread guide 2 to the needle bar 1. The threaded end of the fastening screw 2.10 passes through the connecting arm 2.8 and is inserted into the threaded hole (a channel with internal threads) of the fixed arm 2.9, and the threaded end of the fastening screw 2.10 is screwed to the inner wall of the threaded hole. By tightening the fastening screw 2.10, the connecting arm 2.8 can be fastened to the fixed arm 2.9, thereby allowing the connecting arm 2.8 and the fixed arm 2.9 to jointly clamp the needle bar 1 and fix the wire guide buckle 2. By tightening the fastening screw 2.10 in the opposite direction, the threaded end of the fastening screw 2.10 can be disengaged from the fixed arm 2.9, and the wire guide buckle 2 can be disassembled.

[0065] Alternatively, the thread guide 2 can be detachably connected to the needle bar 1 via a snap-fit ​​structure.

[0066] For details, see attached. Figure 6 As shown, in this embodiment, the fastening structure includes: a first fastening arm 2.6 (a long rod arm made of elastic material) disposed on the wire fastener 2 and having elasticity; and a second fastening arm 2.7 (a long rod arm made of elastic material) disposed on the wire fastener 2 and having elasticity.

[0067] As attached Figure 6As shown, the first snap-fit ​​arm 2.6 and the second snap-fit ​​arm 2.7 are respectively placed on both sides of the needle bar 1; and the outer diameter of the part of the needle bar 1 for the snap-fit ​​arm to hold is larger than the gap between the first snap-fit ​​arm 2.6 and the second snap-fit ​​arm 2.7; at this time, the needle bar 1 is placed between the first snap-fit ​​arm 2.6 and the second snap-fit ​​arm 2.7, and pushes the first snap-fit ​​arm 2.6 and the second snap-fit ​​arm 2.7 outward. The first snap-fit ​​arm 2.6 is in a state of being pulled outward, and the second snap-fit ​​arm 2.7 is also in a state of being pulled outward, so that the first snap-fit ​​arm 2.6 and the second snap-fit ​​arm 2.7 both generate an elastic force to press against the needle bar 1; thus, the first snap-fit ​​arm 2.6 and the second snap-fit ​​arm 2.7 together form a clamp structure that holds the needle bar 1, so as to detachably clamp and fasten the thread fastener 2 to the needle bar 1.

[0068] As attached Figure 4 To be continued Figure 5 As shown, the wire guide 2 has a first side surface 2.2 facing away from the wire inlet 1.2. One end of the wire lead hole 2.1 is located on the first side surface 2.2, and the inner wall edge of the end of the port is rounded to form an arc-shaped first arc-shaped wire guide wall 2.3 that guides the wire outside the needle rod 1 into the wire lead hole 2.1. The first arc-shaped wire guide wall 2.3 is an annular structure that extends around the wire lead hole 2.1.

[0069] The wire guide 2 has a second side surface 2.4 facing the wire inlet 1.2. The other end of the wire lead hole 2.1 is located on the second side surface 2.4, and the inner wall edge of the port is rounded to form an arc-shaped second arc-shaped conductor wall 2.5 that guides the wire from the middle surface of the wire lead hole 2.1 into the wire inlet 1.2. The second arc-shaped conductor wall 2.5 is also an annular structure extending around the wire lead hole 2.1.

[0070] As attached Figure 7 To be continued Figure 8 As shown, a guide wall 1.11 is provided inside the wire passage 1.1 near the outlet 1.3. The guide wall 1.11 is the inner wall of the wire passage 1.1 or a side wall formed by a plate in the wire passage 1.1. The upper end of the guide wall 1.11 is connected to the side wall of the wire passage 1.1, and the lower end extends to connect with the outlet 1.3, so that the guide wall 1.11 is inclined and can guide the wire in the wire passage 1.1 to flow out of the outlet 1.3.

[0071] As attached Figure 7 As shown, the surface of the needle bar 1 may also be provided with a wire groove 1.4 located below the wire outlet 1.3. The wire groove 1.4 is a groove formed by removing part of the material from the needle bar 1, and the wire groove 1.4 extends vertically and is arranged in a through manner in the vertical direction. Its upper end groove 1.41 extends to the drainage wall 1.11, and its lower end groove 1.42 extends to the lower end wall of the needle bar 1.

[0072] As attachedFigure 8 As shown, a guide wire 3 is provided at the lower end of the needle bar 1. The guide wire 3 has a part located below the guide wire groove 1.4 and opposite to the lower end slot 1.42 of the guide wire groove 1.4. This part is provided with a guide wire hole 3.1 for the surface wire in the guide wire groove 1.4 to pass through downward.

[0073] The upper opening of the alignment hole 3.1 has a rounded inner wall edge forming an arc-shaped sidewall, and the lower opening also has a rounded inner wall edge forming an arc-shaped sidewall.

[0074] The guide piece 3 is configured to be detachably fitted into the fastening portion 1.5 of the needle bar 1. For example, see attached... Figure 6 and attached Figure 7 As shown, the lower end of the needle bar 1 has a downwardly protruding insert portion 1.5, and the thread guide 3 has an insert hole 3.2 for the insert portion 1.5 to be inserted into. The insert portion 1.5 is detachably inserted into the insert hole 3.2 to achieve detachable fixation between the thread guide 3 and the needle bar 1. The insert hole 3.2 is a non-circular through hole, and the insert portion 1.5 is a protrusion whose outer contour is adapted to the shape of the insert hole 3.2.

[0075] As attached Figure 8 and attached Figure 9 As shown, the lower end of the needle bar 1 is provided with a needle mounting hole 1.6 with the opening facing downward for inserting the needle 5. The lower opening of the needle mounting hole 1.6 is located on the lower end surface of the insert part 1.5.

[0076] When the needle bar assembly is installed in the head assembly for use, the thread on the outside of the needle bar 1 passes through the thread inlet 2.1 and the thread outlet 1.2 to flow into the thread passage 1.1. It flows downward through the thread passage 1.1 and then enters the guide wire groove 1.4 from the thread outlet 1.3. It then passes downward through the guide wire groove 1.4 and through the thread fixing hole 3.1 to be threaded onto the embroidery needle 5 for embroidery.

[0077] Example 2:

[0078] Head assembly, as attached Figure 10 As shown, the assembly includes a machine head frame 4, a needle bar assembly as described in any of the embodiments in Example 1, and an embroidery needle 5. The needle bar 1 of the needle bar assembly is mounted on the machine head frame 4; the upper end of the embroidery needle 5 is inserted into the embroidery needle mounting hole 1.6 of the needle bar 1 and is fastened by, for example, a screw; the lower end extends downward through the embroidery needle mounting hole 1.6, exposing the thread hole for the top thread to pass through.

[0079] Example 3:

[0080] An embroidery machine, comprising the head assembly described in Embodiment 2.

[0081] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model. Furthermore, the terms "vertical," "horizontal," "front," and "rear," etc., mentioned in the embodiments of the present utility model, indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationships commonly used when the product is in use. They are only for the convenience of describing the present 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, they should not be construed as limitations on the present utility model. It should be further noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," and "fixing" in the description should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model according to the specific circumstances.

[0082] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A needle bar assembly, including a needle bar (1) having a hollow cavity forming a thread passage (1.1), the upper end of which extends to the surface of the needle bar (1) and forms a thread inlet (1.2), and the lower end of which extends to the surface of the needle bar (1) and forms a thread outlet (1.3). Its features are, The needle bar (1) is connected to a thread loop (2), which has a raised portion forming on the surface of the needle bar (1), the portion covering the outside of the inlet (1.2), and has a lead hole (2.1) for the thread to enter the inlet (1.2) from the external space of the needle bar (1). The wire guide (2) has a first side (2.2) facing away from the wire inlet (1.2), one end of the wire hole (2.1) is located on the first side (2.2), and the inner wall edge of the port is rounded to form a first arc-shaped wire wall (2.3) that guides the surface wire outside the needle bar (1) into the wire hole (2.1).

2. The needle bar assembly according to claim 1, characterized in that: The wire guide (2) has a second side (2.4) facing the wire inlet (1.2), and the other end of the wire hole (2.1) is located on the second side (2.4), and the inner wall edge of the port is rounded to form a second arc-shaped wire wall (2.5) that guides the wire in the wire hole (2.1) into the wire inlet (1.2).

3. The needle bar assembly according to any one of claims 1 to 2, characterized in that: The needle bar assembly also includes: A fixing arm (2.9) is placed on one side of the needle bar (1). A connecting arm (2.8) is placed on the other side of the needle bar (1). The thread guide (2) is disposed on the connecting arm (2.8), and one end of the connecting arm (2.8) is rotatably connected to one end of the fixing arm (2.9). The other end of the connecting arm (2.8) is fixed to the other end of the fixing arm (2.9) by a fastening screw (2.10) so as to detachably fix the thread guide (2) on the needle bar (1).

4. The needle bar assembly according to any one of claims 1 to 2, characterized in that: The thread catch (2) is detachably connected to the needle bar (1) by means of a fastening structure.

5. The needle bar assembly according to claim 4, characterized in that: The fastening structure includes: A first snap arm (2.6) that is elastic and is disposed on the wire buckle (2). And a second snap arm (2.7) that is provided on the wire buckle (2) and has elasticity. The first fastening arm (2.6) and the second fastening arm (2.7) are respectively placed on both sides of the needle bar (1) so that they can be clamped and fastened to the needle bar (1).

6. The needle bar assembly according to any one of claims 1 to 2, characterized in that: The wire passage (1.1) has a flow guide wall (1.11) which is configured to be inclined to guide the wire in the wire passage (1.1) to flow out of the outlet (1.3).

7. The needle bar assembly according to claim 6, characterized in that: The needle bar (1) has a wire groove (1.4) located below the wire outlet (1.3) on its surface. The wire groove (1.4) extends vertically and is arranged in a through manner. Its upper end groove (1.41) extends to the drainage wall (1.11), and its lower end groove (1.42) extends to the lower end wall of the needle rod (1).

8. The needle bar assembly according to claim 7, characterized in that: The lower end of the needle bar (1) is provided with a guide wire (3), which has a part located below the guide wire groove (1.4) and opposite to the lower end slot (1.42) of the guide wire groove (1.4). This part is provided with a guide wire hole (3.1) through which the surface wire in the guide wire groove (1.4) passes downward.

9. The head assembly, characterized in that: It includes the needle bar assembly as described in any one of claims 1 to 8.

10. An embroidery machine, characterized in that: It includes the head assembly as described in claim 9.

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