CN109371580B - Sewing machine - Google Patents
Sewing machine Download PDFInfo
- Publication number
- CN109371580B CN109371580B CN201811384828.6A CN201811384828A CN109371580B CN 109371580 B CN109371580 B CN 109371580B CN 201811384828 A CN201811384828 A CN 201811384828A CN 109371580 B CN109371580 B CN 109371580B
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- CN
- China
- Prior art keywords
- sewing
- plate
- air
- presser foot
- sewing material
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B35/00—Work-feeding or -handling elements not otherwise provided for
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/12—Presser-foot attachment
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B73/00—Casings
- D05B73/04—Lower casings
- D05B73/12—Slides; Needle plates
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a sewing machine which comprises a needle plate, a presser foot plate and a presser foot rod, wherein the presser foot rod is connected with the presser foot plate and drives the presser foot plate to lift, when the presser foot plate descends, a sewing material is pressed on the needle plate, an air outlet hole used for blowing air to the sewing material is arranged on the presser foot plate or the needle plate, and the air outlet hole is connected with an air source through an air pipe. The invention adopts the structure that the foot pressing plate or the needle plate is provided with the air outlet, and the relative friction force between the sewing material and the needle plate or the foot pressing plate is reduced by blowing air to the sewing material, so that the sewing material passes through the foot pressing plate at a stable speed, the stability of conveying the sewing material caused by the relative friction force is avoided, and the sewing effect of the sewing material is improved.
Description
Technical Field
The invention relates to the technical field of sewing machines, in particular to a sewing machine.
Background
Flat-seam sewing machines are machines which use two sewing threads to form a stitch on the material to be sewn, so that one or more layers of material are interlaced or sewn together. The flat sewing machine can be used for sewing fabrics such as cotton, hemp, silk, wool and rayon and products such as leather, plastic and paper, the thin material is generally used for knitting, underwear, shirts, uniforms and the like, the thick material is generally used for various sportswear, jeans, fashion, overcoat, shoes, hats, leather, bags and the like, and the flat sewing machine is the most basic vehicle type in sewing equipment. In sewing, it is the simplest stitch. The sewed stitches are neat and beautiful, even, flat and firm, the sewing speed is high, the operation is simple and convenient, and the use is simple and easy to understand.
When the lockstitch sewing machine is used for sewing, the presser foot mechanism is adopted to compress the fabric, the fabric is moved through the feed dog after winding, the presser foot is matched for feeding, however, in the sewing process, if the sewn fabric is thick or the leather fabric is sewn, the sewing thread trace has the problems of unevenness and the like, and the sewing effect is influenced.
Therefore, a sewing machine which is suitable for various sewing fabrics and has good sewing effect is needed.
Disclosure of Invention
In view of the above-mentioned disadvantages of the prior art, the present invention provides a sewing machine, which is used for solving the problem of uneven sewing stitches easily occurring when sewing thick fabrics or leathers in the prior art.
In order to achieve the above and other related objects, the present invention provides a sewing machine, which comprises a needle plate, a presser foot plate and a presser foot rod connected with the presser foot plate and driving the presser foot plate to lift, wherein the presser foot plate presses a sewing material on the needle plate when descending, an air outlet hole for blowing air to the sewing material is arranged on the presser foot plate or the needle plate, and the air outlet hole is connected with an air source through an air pipe.
Preferably, the air outlet is located on the foot pressing plate, an air supply channel is arranged in the foot pressing rod, one end of the air supply channel is communicated with the air outlet on the foot pressing plate, and the other end of the air supply channel is connected with the air pipe.
Preferably, an air cavity communicated with the air supply channel is arranged in the pressure foot plate, the air outlet holes are positioned on the cavity wall of the air cavity, and the air outlet holes are multiple and comprise a main air hole communicated with the air cavity and two rows of auxiliary air holes symmetrically distributed about the main air hole.
Preferably, the secondary air holes in each row are arranged in the direction of travel of the stitchbonding material.
Preferably, the air outlet is located on the needle plate, and the air outlet obliquely sprays airflow.
As described above, the sewing machine of the present invention has the following advantageous effects: the air outlet holes are formed in the presser foot plate or the needle plate, and air is blown to the sewing material, so that the relative friction force between the sewing material and the needle plate or the presser foot plate is reduced, the sewing material passes through the presser foot plate at a stable speed, the stability of conveying the sewing material due to the relative friction force is avoided, and the sewing effect of the sewing material is improved.
Drawings
Fig. 1 is a schematic view of a presser foot mechanism of a sewing machine according to the present invention.
Fig. 2 shows another schematic view of the presser foot mechanism of the sewing machine of the present invention.
Description of the element reference numerals
1 presser foot bar
2 foot pressing plate
3 air pipe
4 auxiliary air holes
5 Main air hole
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1-2. It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The invention provides a sewing machine, which comprises a machine head, a table plate for placing and conveying cloth and the like, wherein the basic structure of the sewing machine is not detailed here, and only relates to the specific structure of a sewing position of a machine needle, the sewing machine comprises a needle plate (not shown), a foot pressing plate 2 and a foot pressing rod 1 which is connected with the foot pressing plate 2 and drives the foot pressing plate to lift, as shown in figure 1, when the foot pressing plate 2 descends, the sewing material is pressed on the needle plate, an air outlet hole for blowing air to the sewing material is arranged on the foot pressing plate 2 or the needle plate, and the air outlet hole is connected with an air source through an air pipe 3. When in sewing, the presser foot plate 2 presses the sewing material on the needle plate, the sewing material, the presser foot plate 2 and the needle plate generate relative friction, particularly thicker fabrics or leather fabrics, the relative friction is larger, the motion stability of the sewing material is seriously influenced, and the sewing trace is unstable.
As shown in fig. 1, in this embodiment, the air outlet is located on the foot pressing plate 2, an air supply channel (not shown) is arranged in the foot pressing rod 1, one end of the air supply channel is communicated with the air outlet on the foot pressing plate 2, and the other end of the air supply channel is connected with the air pipe 3. The presser bar 1 of this embodiment is hollow, and forms the air supply channel, and is connected with the air tube 3 to realize air blowing.
In order to blow air to the seam material better, as shown in fig. 2, the presser foot plate 2 in this embodiment has an air cavity communicated with the air supply channel, the air outlets are located on the cavity wall of the air cavity, and the air outlets are multiple and comprise a main air hole 5 communicated with the air cavity and two rows of auxiliary air holes 4 symmetrically distributed about the main air hole 5. In the embodiment, the air outlet is arranged on the main body of the foot pressing plate 2, and is not arranged on the two foot pressing fingers, and the air outlet is mainly used for fully contacting the sewing material with the main body of the foot pressing plate, and the relative friction force of the air outlet is larger at the position; however, the air outlet hole can be arranged on the pressure foot finger, and the air outlet hole can be optionally arranged according to the requirement. In the embodiment, the main air hole 5 is matched with the auxiliary air hole 4, so that the air flow direction can be adjusted, an air gap is formed between the sewing material and the presser foot plate, the relative friction is reduced, and the sewing is more stable.
Preferably, the secondary air holes 4 in each row are arranged along the moving direction of the sewing material, and can form air flow for pushing the sewing material to move, so that the sewing material is beneficial to moving when the friction force between the sewing material and the toe board is reduced.
In order to stably convey the sewing material and improve the sewing effect, the air outlet holes are located on the needle plate, not shown, and the air outlet holes obliquely eject air flow. In the embodiment, the needle plate is provided with the air outlet hole which can blow air to the sewing material to suspend the sewing material, so that the relative friction between the needle plate and the sewing material is reduced. In order to avoid the overlarge airflow from attaching the sewing material to the foot pressing plate, the outlet of the air outlet hole is obliquely arranged, so that the airflow is obliquely sprayed out, and a certain lifting force is given to the sewing material, thereby improving the sewing stability. The air outlet hole on the needle plate can be directly connected with the air pipe.
In conclusion, the sewing machine of the invention blows air to the sewing material at the foot pressing plate or the needle plate, so that the relative friction of the sewing material in the movement process is reduced, the movement stability of the sewing machine is improved, the sewing traces are uniform and stable, and the sewing effect is improved. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (2)
1. A sewing machine comprises a needle plate, a presser foot plate and a presser foot rod which is connected with the presser foot plate and drives the presser foot plate to lift, wherein when the presser foot plate descends, a sewing material is pressed on the needle plate.
2. The sewing machine of claim 1, wherein: the secondary air holes in each row are arranged along the direction of travel of the joint compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384828.6A CN109371580B (en) | 2018-11-20 | 2018-11-20 | Sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811384828.6A CN109371580B (en) | 2018-11-20 | 2018-11-20 | Sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109371580A CN109371580A (en) | 2019-02-22 |
| CN109371580B true CN109371580B (en) | 2021-10-22 |
Family
ID=65376716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811384828.6A Active CN109371580B (en) | 2018-11-20 | 2018-11-20 | Sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109371580B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923974B (en) * | 2019-11-21 | 2022-06-21 | 东莞市浔兴拉链科技有限公司 | Needle plate device of nylon zipper sewing machine |
| CN110699869A (en) * | 2019-11-28 | 2020-01-17 | 森永湖北乘用车配件有限公司 | Non-contact pressing device at sewing needle position of pattern sewing machine |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3614935A (en) * | 1968-04-18 | 1971-10-26 | Cesare L Conti | Device for driving the thread out of the way from under the presser foot of a sewing machine |
| US4230056A (en) * | 1978-08-15 | 1980-10-28 | Glen Manufacturing Company | Automatic thread wiper for sewing machines |
| US4644884A (en) * | 1983-07-28 | 1987-02-24 | Pegasus Sewing Maching Mfg. Co., Ltd. | Thread chain sewing apparatus for use in overedge sewing machine |
| IT1191689B (en) * | 1986-03-21 | 1988-03-23 | Macpi Spa | MACHINE APPLICABLE TO VALLEY OF SEWING MACHINES FOR TEXTILE PACKAGES IN GENERAL, SUITABLE FOR PERFORMING THE BENDING, BY OPPOSITE PARTS AND WITH THERMAL FIXING, OF THE INTERNAL EDGES, EXCEEDING THE SEAMS OF COUPLING THE EDGES OF FABRIC PORTIONS |
| US5158027A (en) * | 1991-12-19 | 1992-10-27 | Tapistron International, Inc. | Presser foot for hollow needle tufting apparatus |
| US5560308A (en) * | 1994-03-14 | 1996-10-01 | Matsushita Industrial Co., Ltd. | Apparatus for processing peripheral selvedges of fabric |
| CN203530616U (en) * | 2013-07-18 | 2014-04-09 | 精机机械厂股份有限公司 | Press foot with level blowing device |
| CN106854795B (en) * | 2016-12-29 | 2019-12-17 | 杰克缝纫机股份有限公司 | Cloth moving mechanism, sewing machine and cloth sewing method |
| CN207331219U (en) * | 2017-07-02 | 2018-05-08 | 王建波 | A kind of presser foot |
| CN107475909B (en) * | 2017-08-28 | 2020-06-05 | 杰克缝纫机股份有限公司 | Automatic sewing equipment |
| CN207933637U (en) * | 2018-01-12 | 2018-10-02 | 沈阳瑞晟智能装备有限公司 | Sew machine worktable |
-
2018
- 2018-11-20 CN CN201811384828.6A patent/CN109371580B/en active Active
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| Publication number | Publication date |
|---|---|
| CN109371580A (en) | 2019-02-22 |
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Address after: 318010 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |