阅读说明：本技术 一种针杆旋转模板机及其穿线方法 (Needle bar rotating template machine and threading method thereof ) 是由 谭炜军 王唯驹 范国峰 黄超 侯昆明 于 2021-08-11 设计创作，主要内容包括：本发明公开了一种针杆旋转模板机及其穿线方法,包括：针杆,其设有用于供缝线穿出的出线孔；机针,其固设于针杆的底部,机针设有用于供从出线孔出来的缝线穿入的穿线孔,穿线孔的入线口的朝向与出线孔的朝向不同。穿线时,需要将从出线孔出来的缝线绕着机针的外表面缠绕一段距离,才能使缝线从穿线孔的入线口处穿入穿线孔。由于缝线绕着机针的外表面缠绕一段距离,使得缝线的一部分张力分散在机针上,这样,有利于利用缝线的张力将机针抱紧拉直,使得缝线对机针产生一种“勒紧效应”,使机针变得更直,因此,可以防止因缝线的张力主要集中在针孔和针尖处导致机针变形,从而可避免机针的刺布位置发生偏移,确保线迹笔直、美观,提高了缝纫质量。(The invention discloses a needle bar rotary template machine and a threading method thereof, wherein the needle bar rotary template machine comprises the following steps: the needle rod is provided with a thread outlet hole for the thread to pass through; the needle is fixedly arranged at the bottom of the needle rod and provided with a threading hole for a thread coming out of the thread outlet hole to penetrate through, and the direction of a thread inlet of the threading hole is different from the direction of the thread outlet hole. During threading, the suture coming out of the thread outlet hole needs to be wound for a certain distance around the outer surface of the needle, so that the suture can penetrate into the thread hole from the thread inlet of the thread hole. Because the suture twines a distance around the surface of eedle for a part of tension dispersion of suture is on the eedle, like this, be favorable to utilizing the tension of suture to hold the eedle tightly and flare-out, make the suture produce a "tightening effect" to the eedle, make the eedle become straighter, consequently, can prevent to lead to the eedle to warp because of the tension of suture mainly concentrates on pinhole and needle point department, thereby can avoid the cloth pricking position of eedle to take place the skew, ensure that the stitch is straight, pleasing to the eye, improved the sewing quality.)

1. A needle bar rotary template machine, comprising:

the needle rod (1) is provided with a thread outlet hole (11) for the thread (3) to pass through;

the needle (2) is fixedly arranged at the bottom of the needle rod (1), the needle (2) is provided with a threading hole (21) for the thread (3) coming out of the thread outlet hole (11) to penetrate, and the orientation of a thread inlet (211) of the threading hole (21) is different from that of the thread outlet hole (11).

2. A needle bar rotary template machine according to claim 1, characterized in that the angle range of the orientation of the outlet hole (11) deviating from the inlet (211) along the preset rotation direction with the orientation of the inlet (211) as the reference is: greater than or equal to 135 ° and less than or equal to 225 °.

3. Needle bar rotary molder according to claim 2, wherein said outlet hole (11) is oriented in an angular range deviating from said inlet opening (211) of: greater than or equal to 150 ° and less than or equal to 200 °.

4. Needle bar rotary molder according to claim 3, wherein said outlet hole (11) is oriented at an angle of 180 ° from said inlet opening (211).

5. A needle bar rotary template machine according to any one of the claims 2 to 4, characterized in that the suture (3) coming out of the outlet hole (11) is wound to the inlet (211) and is threaded through the threading hole (21) in a direction opposite to the preset rotation direction.

6. A threading method of a needle bar rotary template machine, which is applied to the needle bar rotary template machine of any one of claims 1 to 5, comprising:

after the suture (3) passes through the thread outlet hole (11) of the needle bar rotating template machine, rotating the suture (3) around the outer surface of a needle (2) of the needle bar rotating template machine to enable the suture (3) to be wound to a thread inlet (211) of a thread passing hole (21) of the needle bar rotating template machine;

and the suture (3) is threaded into the threading hole (21) from the thread inlet (211), so that the suture (3) passes out from the thread outlet of the threading hole (21).

7. The needle bar rotary template threading method according to claim 6, wherein the step of rotating the thread (3) around the outer surface of the needle (2) of the needle bar rotary template to wind the thread (3) to the thread inlet (211) of the thread passing hole (21) of the needle bar rotary template comprises the following steps:

rotating the suture (3) around the outer surface of the needle (2) along a reflex angle between the orientation of the wire outlet hole (11) and the orientation of the wire inlet (211) to wind the suture (3) to the wire inlet (211).

Technical Field

The invention relates to the technical field of sewing equipment, in particular to a needle bar rotating template machine. In addition, the invention also relates to a threading method of the needle bar rotating template machine.

Background

In the prior art, a needle bar rotating template machine often adopts a small-size machine needle when sewing, for example, when a down jacket is sewn by the needle bar rotating template machine, the small-size machine needle is usually adopted to prevent down leakage.

Generally, a small-size machine needle is thin, the rigidity of the machine needle is low, particularly the rigidity of a needle hole and a needle point area of the machine needle is lowest, the tension of a sewing thread of the machine needle before cloth needling is mainly concentrated at the needle hole and the needle point, so that the machine needle is easy to deform, the position of the needle point for cloth needling is deviated, and therefore when a straight line is continuously sewn, the whole stitch looks straight and the stitch is inclined due to the fact that the needle point for cloth needling partially deviates.

Therefore, how to avoid the stitch skew phenomenon when the needle bar rotates the template machine to sew is a problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a needle bar rotary stencil machine which can prevent the needle bar rotary stencil machine from generating the phenomenon of stitch skewness during sewing.

Another object of the present invention is to provide a threading method applied to a needle bar rotary template machine including the above needle bar rotary template machine, which can prevent the needle bar rotary template machine from generating a phenomenon of stitch skewness during sewing.

In order to achieve the above purpose, the invention provides the following technical scheme:

a needle bar rotary template machine comprising:

the needle rod is provided with a thread outlet hole for the thread to pass through;

the needle is fixedly arranged at the bottom of the needle rod and provided with a threading hole for the threading of the suture coming out of the thread outlet hole, and the orientation of a thread inlet of the threading hole is different from that of the thread outlet hole.

Preferably, with the orientation of the wire inlet as a reference, along a preset rotation direction, the angular range of the orientation of the wire outlet deviating from the wire inlet is as follows: greater than or equal to 135 ° and less than or equal to 225 °.

Preferably, the range of angles of the orientation of the wire outlet hole deviating from the wire inlet is as follows: greater than or equal to 150 ° and less than or equal to 200 °.

Preferably, the outlet hole is oriented at an angle 180 ° from the inlet.

Preferably, the suture thread coming out of the thread outlet hole is wound to the thread inlet along the direction opposite to the preset rotating direction and is threaded through the thread through hole.

A threading method of a needle bar rotating template machine applied to any one of the above needle bar rotating template machines, comprising:

after the suture passes through the thread outlet hole of the needle bar rotating template machine, the suture is rotated around the outer surface of a needle of the needle bar rotating template machine, so that the suture is wound to the thread inlet of the thread inlet hole of the needle bar rotating template machine;

and threading the suture into the threading hole from the suture inlet, and enabling the suture to penetrate out from the thread outlet of the threading hole.

Preferably, the rotating the suture around the outer surface of the needle bar rotation template machine to wind the suture to the thread inlet of the threading hole of the needle bar rotation template machine comprises:

rotating the suture around the outer surface of the needle along a reflex angle between the orientation of the thread outlet hole and the orientation of the thread inlet so that the suture is wound to the thread inlet.

According to the needle bar rotating template machine provided by the invention, the thread inlet and the thread outlet of the threading hole face to different directions, namely, the thread inlet and the thread outlet are positioned on different sides of the needle, so that during threading, a thread coming out of the thread outlet needs to be wound around the outer surface of the needle for a certain distance, and the thread can penetrate into the threading hole from the thread inlet of the threading hole. Because the suture twines a distance around the surface of eedle for a part of tension dispersion of suture is on the eedle, like this, be favorable to utilizing the tension of suture to hold the eedle tightly and flare-out, make the suture produce a "tightening effect" to the eedle, make the eedle become straighter, consequently, can prevent to lead to the eedle to warp because of the tension of suture mainly concentrates on pinhole and needle point department, thereby can avoid the cloth pricking position of eedle to take place the skew, ensure that the stitch is straight, pleasing to the eye, improved the sewing quality.

The threading method of the needle bar rotating template machine provided by the invention is applied to the needle bar rotating template machine, when a suture penetrates out of a wire outlet hole of the needle bar rotating template machine, the suture is rotated to a wire inlet around the outer surface of a machine needle of the needle bar rotating template machine, the suture can be tightly attached to the outer surface of the machine needle, so that the tension of the suture can be dispersed on the machine needle, the tension of the suture is prevented from being concentrated at a needle hole and a needle point of the machine needle, the deformation of the machine needle can be avoided, the linearity of the stitch is ensured, and the stitch is prevented from being inclined.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic view showing the relative positions of a thread outlet of a needle bar and a thread inlet of a needle threading hole of a prior art needle bar rotating template machine;

FIG. 2 is a schematic view showing the relative positions of the thread outlet of the needle bar and the thread inlet of the needle threading hole of the needle bar rotary template machine according to the embodiment of the present invention;

FIG. 3 is a schematic view showing the relationship between the angle of the outlet hole deviating from the inlet and the trace skew times along the preset rotating direction;

fig. 4 is a flowchart of a threading method of the needle bar rotating template machine according to the embodiment of the invention.

The reference numerals in fig. 1 and 2 are as follows:

1 is a needle rod, 11 is an outlet hole, 2 is a machine needle, 21 is a threading hole, 211 is a thread inlet, and 3 is a suture.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a needle bar rotating template machine which can avoid the phenomenon of stitch deflection generated by the needle bar rotating template machine during sewing. Another core of the present invention is to provide a threading method of a needle bar rotary template machine including the above needle bar rotary template machine, which can prevent the needle bar rotary template machine from generating a phenomenon of stitch skewness during sewing.

Referring to fig. 1-3, fig. 1 is a schematic view showing the relative positions of a thread outlet of a needle bar and a thread inlet of a needle threading hole of a needle bar rotary template machine in the prior art; FIG. 2 is a schematic view showing the relative positions of the thread outlet of the needle bar and the thread inlet of the needle threading hole of the needle bar rotary template machine according to the embodiment of the present invention; FIG. 3 is a schematic view showing the relationship between the angle of the outlet hole deviating from the inlet and the trace skew times along the predetermined rotation direction.

The invention provides a needle bar rotating template machine, which comprises a needle bar 1 and a needle 2, wherein the needle 2 is fixedly arranged at the bottom of the needle bar 1, the needle bar 1 is provided with a thread outlet hole 11 for a thread 3 to pass through, the needle 2 is provided with a threading hole 21 for the thread 3 coming out of the thread outlet hole 11 to pass through, and the direction of a thread inlet 211 of the threading hole 21 is different from the direction of the thread outlet hole 11.

That is, the thread inlet 211 and the thread outlet 11 of the threading hole 21 are oriented in different directions and are located on different sides of the needle 2, so that the thread 3 coming out of the thread outlet 11 needs to be wound around the outer surface of the needle 2 for a certain distance to pass through the thread hole 21 from the thread inlet 211 of the threading hole 21. Because the suture 3 winds a distance around the outer surface of the needle 2, part of the tension of the suture 3 is dispersed on the needle 2, thus being beneficial to utilizing the tension of the suture 3 to hold the needle 2 tightly and straighten the needle, leading the suture 3 to generate a tightening effect on the needle 2 and leading the needle 2 to be straighter, therefore, the deformation of the needle 2 caused by the fact that the tension of the suture 3 is mainly concentrated at a needle hole and a needle point can be prevented, thereby avoiding the cloth pricking position of the needle 2 from deviating, ensuring the straight and beautiful stitch, and improving the sewing quality.

It can be understood that, as shown in fig. 1, the orientation of the thread outlet hole 11 of the needle bar 1 and the thread inlet 211 of the thread passing hole 21 of the needle 2 in the prior art is the same, that is, the two are aligned up and down, and the connecting line between the two is parallel to the axis of the needle 2, so that, after the suture 3 comes out from the thread outlet hole 11 of the needle bar 1, the suture 3 directly enters the thread passing hole 21 of the needle 2 on the same side, and the suture 3 is not in contact with the needle 2, so that the tension of the suture 3 is concentrated on the weakest part (such as the needle hole and the needle point area) of the needle 2, which causes the needle 2 to deform, and the stitch is skewed.

Therefore, compared with the prior art, the invention changes the relative position relationship between the wire outlet hole 11 of the needle bar 1 and the wire inlet 211 of the threading hole 21 of the needle 2, so that the thread 3 can wind the needle 2 for a certain distance after coming out of the wire outlet hole 11, thereby solving the technical problem of stitch skewness when the needle bar rotates a template machine to sew.

Preferably, the orientation of the thread outlet hole 11 is changed by changing the position of the thread outlet hole 11 of the needle bar 1, so that the orientation of the thread outlet hole 11 is different from the orientation of the thread inlet 211 of the threading hole 21 of the needle 2.

It can be understood that the larger the angle between the direction of the thread inlet 211 of the threading hole 21 and the direction of the thread outlet hole 11 is, the larger the angle of the thread 3 passing through the needle 2 after coming out of the thread outlet hole 11 is, the easier the tension of the thread 3 is dispersed, and the straightness of the needle 2 is ensured; however, when the angle at which the thread 3 passes around the needle 2 is larger, the resistance to the thread 3 at the time of sewing is larger, and the thread take-up property of the thread 3 is affected. Therefore, in order to disperse the tension of the suture 3 as much as possible to the needle 2 and to avoid affecting the thread take-up property of the suture 3, as a preferable aspect, in addition to the above embodiment, the angle range in which the orientation of the outlet hole 11 deviates from the thread inlet 211 in the preset rotational direction with respect to the orientation of the thread inlet 211 is: greater than or equal to 135 ° and less than or equal to 225 °.

That is, after the suture 3 comes out of the outlet hole 11, the angle of the suture 3 passing through the needle 2 is 135-225 degrees, so that the suture 3 can be tightly attached to the needle 2, and the suture 3 can be ensured to have proper resistance, so that the suture 3 has better contraction performance.

Further, practical applications show that when the orientation of the wire outlet hole 11 deviates from the wire inlet 211 by an angle greater than or equal to 150 ° and less than or equal to 200 °, the probability of the trace skew occurring is the lowest. As shown in fig. 3, in order to obtain the actual situation that the stitch of the needle 2 is skewed by using the high-speed video shooting, it can be seen from the figure that when the angle between the direction of the thread inlet 211 of the threading hole 21 and the direction of the thread outlet hole 11 is zero, that is, when the direction of the thread inlet 211 of the threading hole 21 is the same as the direction of the thread outlet hole 11, the probability of the stitch being skewed is the largest; with the gradual increase of the angle between the direction of the incoming 211 of the threading hole 21 and the direction of the outlet hole 11, the skew phenomenon of the stitches is gradually reduced until the angle between the direction of the incoming 211 of the threading hole 21 and the direction of the outlet hole 11 is 150 degrees, the skew phenomenon of the stitches is reduced to the minimum, and when the angle between the direction of the incoming 211 of the threading hole 21 and the direction of the outlet hole 11 is between 150 degrees and 200 degrees, the stitches are kept better, so that the probability of the stitches is kept to the minimum, and when the angle between the direction of the incoming 211 of the threading hole 21 and the direction of the outlet hole 11 is more than 200 degrees, the skew phenomenon of the stitches is gradually increased, that is, when the angle between the direction of the incoming 211 of the threading hole 21 and the direction of the outlet hole 11 is too large, because the angle of the thread 3 wound on the machine needle 2 is too large, the machine needle 2 is stressed unevenly, so that the machine needle 2 is deformed, resulting in a skewed stitch.

Further, in view of the simplicity of the structural arrangement, as a preferable solution, based on the above embodiment, as shown in fig. 2, the orientation of the thread outlet hole 11 is deviated from the thread inlet 211 by 180 °, that is, the orientation of the thread outlet hole 11 is completely opposite to the orientation of the thread inlet 211 of the threading hole 21, so that after the thread 3 comes out of the thread outlet hole 11, it needs to rotate 180 ° around the needle 2 to pass through the threading hole 21 from the thread inlet 211, that is, it needs to wind the needle 2 for half a turn, and as can be seen from fig. 3, the thread skew rate is at the lowest level at this angle; moreover, the arrangement mode that the orientation of the line outlet hole 11 is completely opposite to the orientation of the line inlet 211 of the threading hole 21 is also convenient for processing and structural layout, and brings convenience for the assembly of the needle bar rotary template machine.

It should be noted that, in the above embodiments, the winding direction of the suture 3 is not limited, that is, the arrangement manner of the suture 3 between the thread outlet hole 11 and the thread inlet 211 of the threading hole 21 is not specifically limited, for example, after the suture 3 comes out from the thread outlet hole 11, the suture 3 can be wound on the needle 2 along the direction of the thread outlet hole 11 away from the thread inlet 211 in the preset rotating direction; it is also possible to have a configuration in which the suture 3 coming out of the thread outlet hole 11 is wound to the thread inlet 211 and passed through the threading hole 21 in a direction completely opposite to a direction in which the thread outlet hole 11 is deviated from the thread inlet 211 in a preset rotational direction.

It should be noted that, in the above embodiments, other structures and functions of the needle bar rotating template machine are not specifically limited, and those skilled in the art may refer to the prior art, and detailed description is omitted here.

Referring to fig. 4, a flow chart of a threading method of the needle bar rotating template machine according to an embodiment of the present invention is shown.

In addition to the above-described needle bar rotary molder, the present invention also provides a threading method of the needle bar rotary molder, which is applied to the needle bar rotary molder disclosed in the above-described embodiments. The threading method of the needle bar rotating template machine comprises the steps S1 and S2.

Step S1: after the thread 3 passes through the thread outlet hole 11 of the needle bar rotating template machine, the thread 3 is rotated around the outer surface of the needle 2 of the needle bar rotating template machine, so that the thread 3 is wound to the thread inlet 211 of the thread passing hole 21 of the needle bar rotating template machine.

Step S2: the suture 3 is threaded into the threading hole 21 from the thread inlet 211, and the suture 3 is threaded out from the thread outlet of the threading hole 21.

It can be understood that, after the suture 3 passes through the outlet hole 11 of the needle bar rotating template machine, the suture 3 is rotated to the inlet 211 around the outer surface of the needle 2, so that the suture 3 can be tightly attached to the outer surface of the needle 2, the tension of the suture 3 can be dispersed on the needle 2, the tension of the suture 3 is prevented from being concentrated on the needle hole and the needle point of the needle 2, the deformation of the needle 2 can be avoided, the linearity of the stitch can be ensured, and the stitch is prevented from being inclined.

It will be understood that when the orientation of the thread inlet 211 of the threading hole 21 is not exactly opposite to the orientation of the thread outlet hole 11, i.e. the orientation of the thread outlet hole 11 deviates from the thread inlet 211 by an angle other than 180 °, there is a major angle and a minor angle between the orientation of the thread outlet hole 11 and the thread inlet 211 of the threading hole 21. In order to make the needle 2 distribute the tension of the suture 3 as much as possible, the preferred embodiment is that the suture 3 is rotated around the outer surface of the needle 2 of the needle bar rotating template machine to make the suture 3 be wound around the thread inlet 211 of the threading hole 21 of the needle bar rotating template machine, which comprises:

the suture 3 is rotated around the outer surface of the needle 2 along the reflex angle between the orientation of the thread outlet hole 11 and the orientation of the thread inlet 211, so that the suture 3 is wound at the thread inlet 211.

Thus, the contact area of the suture 3 and the needle 2 can be increased, so that the tension of the suture 3 can be dispersed on the needle bar 1 as much as possible, the tension of the suture 3 is prevented from being concentrated at the needle hole and the needle point of the needle 2, the needle 2 can be ensured to be straighter, and the phenomenon that the stitch is inclined due to the deformation of the needle can be avoided.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The needle bar rotating template machine and the threading method thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.