CN107090670B - A thick material sewing machine - Google Patents

Abstract

The invention discloses a thick material sewing machine, comprising: a main shaft, a feeding connecting rod, a tooth-lifting connecting rod, a presser foot plate, and a thread take-up lever assembly with a preset length. There are preset angles of elevation and depression. The main shaft is provided with a feeding eccentric wheel and a tooth-lifting eccentric. The feeding eccentric and the tooth-lifting eccentric are independent of each other. The upper part of the rod is sleeved on the tooth-lifting eccentric. Since the feeding eccentric and the tooth-lifting eccentric are two independent parts, they can be adjusted separately, that is, the installation angles of the feeding eccentric and the tooth-lifting eccentric and the main shaft are respectively rotated, so their applicability is better to meet different requirements. Sewing of thick fabrics.

Description

A thick material sewing machine

technical field

The invention relates to the technical field of sewing machines, in particular to a thick material sewing machine.

Background technique

With the development of science and technology, the technology of sewing machines has also made great progress.

However, the feeding mechanism of the existing sewing machine generally adopts a single eccentric wheel structure. The single eccentric wheel is provided with a feeding link and a tooth-lifting link at the same time. During high-speed sewing, especially when the fabric is thick and stepped, There will be a problem of poor feeding, and then the feeding teeth will not be able to feed the fabric, which will affect the sewing quality and work efficiency.

Therefore, how to provide a thick material sewing machine to improve sewing effect and efficiency and sewing adaptability is a technical problem that those skilled in the art need to solve urgently.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a thick material sewing machine, which can effectively solve the problems of weak sewing adaptability and the like.

In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions:

A thick material sewing machine, comprising: a main shaft, a feeding connecting rod, a tooth-lifting connecting rod, a presser foot plate, and a thread take-up lever assembly with a preset length, the thread take-up lever assembly is hinged with the main shaft through a needle bar crank, and the pressing The foot plate is provided with a preset angle of elevation and depression, the main shaft is provided with a feeding eccentric and a tooth-lifting eccentric, the feeding eccentric and the tooth-lifting eccentric are independent of each other, and the upper part of the feeding link is sleeved connected to the feeding eccentric wheel, and the upper part of the tooth-lifting connecting rod is sleeved on the tooth-lifting eccentric wheel.

Preferably, the elevation angle and the depression angle of the preset angle of the presser foot plate are respectively +18° in elevation and -18° in depression.

Preferably, the bottom of the feeding connecting rod is hinged with the feeding shaft through a feeding crank.

Preferably, the tooth-lifting link is hinged with the tooth-lifting shaft through a tooth-lifting crank.

Preferably, it also includes a tooth holder assembly, one end of the tooth holder assembly is fixedly connected to the tooth-lifting shaft, and the other end is fixedly connected to the feeding shaft.

Compared with the prior art, the above technical solution has the following advantages:

The thick material sewing machine provided by the present invention includes: a main shaft, a feeding connecting rod, a tooth-lifting connecting rod, a presser foot plate, and a thread take-up lever assembly with a preset length. The thread take-up lever assembly is hinged with the main shaft through a needle bar crank, and the presser foot plate There are preset angles of elevation and depression, and the main shaft is provided with a feeding eccentric and a tooth-lifting eccentric. The feeding eccentric and the tooth-lifting eccentric are independent of each other. The upper part of the connecting rod is sleeved on the tooth-lifting eccentric. Since the feeding eccentric and the tooth-lifting eccentric are two independent parts, they can be adjusted separately, that is, the installation angles of the feeding eccentric and the tooth-lifting eccentric and the main shaft are respectively rotated, so their applicability is better to meet different requirements. Sewing of thick fabrics.

Description of drawings

In order to explain the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are of the present invention. For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is a three-dimensional schematic diagram of a thick material sewing machine provided by a specific embodiment of the present invention;

Fig. 2 is a side view structural schematic diagram of a thick material sewing machine provided by a specific embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a presser foot plate of a thick material sewing machine provided by a specific embodiment of the present invention.

Detailed ways

As mentioned in the Background section, current sewing machines are less suitable for fabrics of different thicknesses.

Based on the above research, the embodiment of the present invention provides a thick material sewing machine. Since the feeding eccentric and the lifting eccentric are two independent parts, they can be adjusted independently, that is, rotating the feeding eccentric and the lifting eccentric respectively. The installation angle of the tooth eccentric wheel and the main shaft, so its applicability is better to meet the sewing of different thickness fabrics.

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar promotions without departing from the connotation of the present invention. Accordingly, the present invention is not limited by the specific embodiments disclosed below.

Please refer to FIGS. 1-3 , FIG. 1 is a schematic three-dimensional structure diagram of a thick material sewing machine provided by a specific embodiment of the present invention; FIG. 2 is a schematic diagram of a thick material sewing machine provided by a specific embodiment of the present invention. A schematic side view of the structure; FIG. 3 is a schematic structural diagram of a presser foot plate of a thick material sewing machine provided by a specific embodiment of the present invention.

A specific embodiment of the present invention provides a thick material sewing machine, comprising: a main shaft 2, a feed link 5, a tooth lifter link 6, a presser foot plate 10, and a thread take-up lever assembly 1 with a preset length, the thread take-up lever assembly 1. It is hinged with the main shaft 2 through the needle bar crank. The presser foot plate 10 is provided with a preset angle of elevation and depression. The main shaft 2 is provided with a feeding eccentric 4 and a tooth-lifting eccentric 3. The feeding eccentric 4 and the tooth-lifting eccentric 3 Independent of each other, the upper part of the feeding connecting rod 5 is sleeved on the feeding eccentric wheel 4 , and the upper part of the tooth-lifting connecting rod 6 is sleeved on the tooth-lifting eccentric wheel 3 .

In this embodiment, the inclinations of the elevation angle and depression angle of the presser foot plate 10 can be appropriately increased respectively compared with the conventional presser foot plate, and the thread take-up lever assembly 1 can also be appropriately increased, so that when sewing thicker fabrics In addition, the feeding eccentric 4 and the tooth-lifting eccentric 3 are two independent parts, so they can be adjusted separately, that is, respectively Rotate the installation angle of the feeding eccentric 4 and the tooth-lifting eccentric 3 and the main shaft 2, so its applicability is better to meet the sewing of different thickness fabrics.

Further, the elevation angle and the depression angle of the preset angle of the presser foot plate are respectively +18° for the elevation angle and -18° for the depression angle. Compared with the elevation angle of +10° and the depression angle of the traditional presser foot plate of +10°, the presser foot plate 10 provided in this embodiment can easily climb over when the seam thickness and over-sill are reached. It should be noted that the above-mentioned elevation angle and depression angle are only preferred angle values, and may also be appropriately modified according to actual conditions, which are not limited in this embodiment.

The bottom of the feeding connecting rod 5 is hinged with the feeding shaft 8 through the feeding crank. The tooth-lifting link 6 is hinged with the tooth-lifting shaft 7 through the tooth-lifting crank. It also includes a tooth frame assembly 9 , one end of the tooth frame assembly 9 is fixedly connected with the tooth-lifting shaft 7 , and the other end is fixedly connected with the feeding shaft 8 . The motor drives the main shaft 2 to rotate, thereby driving the tooth-lifting eccentric 3 and the feeding eccentric 4 on the main shaft 2 to move together, thereby driving the tooth-lifting shaft 7 and the feeding shaft 8 to swing, so as to realize the up and down and front and rear movements of the tooth frame assembly 9, thereby Realize a complete feeding movement.

It should also be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply those entities or operations There is no such actual relationship or order between them. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other.

The above description of the disclosed embodiments enables any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (5)

1. A thick stock sewing machine, comprising: the thread take-up assembly is hinged to the main shaft through a needle rod crank, an elevation angle and a depression angle of a preset angle are arranged on the pressing foot plate, a feeding eccentric wheel and a tooth lifting eccentric wheel are arranged on the main shaft, the feeding eccentric wheel and the tooth lifting eccentric wheel are independent of each other, the upper portion of the feeding connecting rod is sleeved on the feeding eccentric wheel, the upper portion of the tooth lifting connecting rod is sleeved on the tooth lifting eccentric wheel, and the mounting angles of the feeding eccentric wheel, the tooth lifting eccentric wheel and the main shaft are adjustable.

2. The thick stock sewing machine of claim 1, wherein the predetermined angle of the presser foot is an elevation angle of +18 ° and a depression angle of-18 °, respectively.

3. The thick material sewing machine of claim 2, wherein the bottom of the feeding connecting rod is hinged with the feeding shaft through a feeding crank.

4. The thick material sewing machine of claim 3, wherein the feed lifting connecting rod is hinged to the feed lifting shaft through a feed lifting crank.

5. The thick material sewing machine of claim 4, further comprising a gripper frame assembly, wherein one end of the gripper frame assembly is fixedly connected with the feed shaft, and the other end of the gripper frame assembly is fixedly connected with the feed shaft.

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