CN110904576A - Presser foot lifting device of sewing machine - Google Patents
Presser foot lifting device of sewing machine Download PDFInfo
- Publication number
- CN110904576A CN110904576A CN201911388158.XA CN201911388158A CN110904576A CN 110904576 A CN110904576 A CN 110904576A CN 201911388158 A CN201911388158 A CN 201911388158A CN 110904576 A CN110904576 A CN 110904576A
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- CN
- China
- Prior art keywords
- presser foot
- foot lifting
- lever
- sewing machine
- roller
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- Pending
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
Abstract
The invention discloses a presser foot lifting device of a sewing machine, which comprises a driving device, a swing crank, a roller, a presser foot lifting rear lever, a presser foot lifting pull rod and a presser foot lifting front lever component, wherein the driving device is connected with the swing crank; the power output end of the driving device is connected to one end of a swing crank, and the other end of the swing crank is provided with a roller; the first end of the presser foot lifting rear lever is contacted with the roller, and the second end of the presser foot lifting rear lever is rotatably arranged on the machine shell through a rear lever shaft position screw; the first end of the presser foot lifting pull rod is connected to the second end of the presser foot lifting rear lever through a presser foot pull rod screw, the second end of the presser foot lifting pull rod is connected to one end of the presser foot lifting front lever component, and the other end of the presser foot lifting front lever component is connected to the presser foot. The pressure foot lifting device lifts the pressure foot through the driving device, and is sensitive, efficient, accurate and reliable.
Description
Technical Field
The invention relates to a presser foot lifting device of a sewing machine.
Background
The sewing machine generally uses the electromagnet to drive the function of lifting the presser foot, only can fix a value and a height, cannot realize the setting of the height of the presser foot stroke, and has the disadvantages of complex structure, inconvenient adjustment, poor sensitivity and low transmission efficiency. In addition, the conventional electromagnet can generate collision noise, is easy to generate heat after being electrified for a long time, and has high failure rate.
Disclosure of Invention
The invention aims to solve the technical problems of inconvenient adjustment, poor sensitivity and low efficiency of the conventional presser foot lifting driving device of the sewing machine.
In order to achieve the above purpose, the invention provides a presser foot lifting device of a sewing machine, which comprises a driving device, a swing crank, a roller, a rear presser foot lifting lever, a presser foot lifting pull rod and a front presser foot lifting lever component, wherein the driving device is connected with the swing crank; the power output end of the driving device is connected to one end of the swinging crank, and the other end of the swinging crank is provided with the roller; the first end of the presser foot lifting rear lever is in contact with the roller, and the second end of the presser foot lifting rear lever is rotatably arranged on the machine shell through a rear lever shaft position screw; the first end of the pressure foot lifting pull rod is connected to the second end of the pressure foot lifting rear lever through a pressure foot pull rod screw, the second end of the pressure foot lifting pull rod is connected to one end of the pressure foot lifting front lever component, and the other end of the pressure foot lifting front lever component is connected to the pressure foot; the driving device is suitable for driving the swing crank to rotate, the roller is suitable for freely rotating, the pressure foot lifting rear lever is suitable for rotating under the driving of the swing crank, and then the pressure foot lifting pull rod is driven to move back and forth, so that the pressure foot lifting front lever component is lifted, and finally the pressure foot is driven to move up and down to a preset height position.
Furthermore, a through hole is formed between the first end and the second end of the pressure foot lifting and pressing rod rear lever, a top rod penetrates through the through hole and then is fixed on the machine shell, and the diameter of the through hole is larger than that of the top rod.
Furthermore, drive arrangement is driving motor, driving motor fixes on the back luffer board, back luffer board pad with the cooperation of back luffer board, installs the oil blanket on the fixed cover, the oil blanket cover is in driving motor's output shaft and pushes down back luffer board pad, and back luffer board pad is fixed on the back luffer board.
Further, the pressure foot lifting pull rod is fixed on the pressure foot lifting front lever component through a split washer.
Further, the driving device is any one of a stepping motor, a rotary electromagnet, and a rotary cylinder.
Compared with the prior art, the invention has the beneficial effects that:
the pin roller is suitable for free rotation, the rear lever of the pressure foot lifting is driven by the swing crank to rotate, the pressure foot lifting pull rod is further driven to move back and forth, the front lever component of the pressure foot lifting is lifted, the pressure foot is finally driven to move up and down to a preset height position, the stroke height of the pressure foot is set by rotating the angle of the motor through an electric control program, and the pin roller is convenient to adjust, sensitive, efficient, accurate and reliable.
Drawings
FIG. 1 is a schematic block diagram of one embodiment of the present invention;
FIG. 2 is an exploded view of an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of a wobble crank in accordance with an embodiment of the present invention;
fig. 4 is a schematic view of the structure of the lever after lifting the presser foot according to one embodiment of the present invention.
In the figure, a drive device 1; a rear window panel 2; a rear window panel cushion 3; an oil seal 4; a fixed sleeve 5; a swing crank 6; rear lever shaft position screw 7; presser foot draw bar screw 8; a roller 9; lifting the presser foot roller axis position screw 10; lifting the presser foot rear lever 11; a top rod 12; lifting the presser foot pull rod 13; a split washer 14; a presser foot front lever member 15; and a presser foot 16.
Detailed Description
The present invention will now be described in detail with reference to the accompanying drawings.
As shown in fig. 1-4, one embodiment of the presser foot lifting device of the sewing machine of the present invention comprises a driving device 1, a swing crank 6, a roller 9, a presser foot lifting rear lever 11, a presser foot lifting pull rod 13 and a presser foot lifting front lever component 15; the power output end of the driving device 1 is connected to one end of the swinging crank 6, and the other end of the swinging crank 6 is provided with the roller 9; the first end of the presser foot lifting rear lever 11 is in contact with the roller 9, and the second end of the presser foot lifting rear lever 11 is rotatably arranged on the machine shell through a rear lever shaft position screw 7; a first end of the presser foot lifting pull rod 13 is connected to a second end of the presser foot lifting rear lever 11 through a presser foot pull rod screw 8, a second end of the presser foot lifting pull rod 13 is connected to one end of the presser foot lifting front lever component 15, and the other end of the presser foot lifting front lever component 15 is connected to the presser foot 16; the driving device 1 is suitable for driving the swing crank 6 to rotate, the roller 9 is suitable for freely rotating, the presser foot lifting rear lever 11 is suitable for being driven by the swing crank 6 to rotate, and then the presser foot lifting pull rod 13 is driven to move back and forth, so that the presser foot lifting front lever component 15 is lifted, and finally the presser foot 16 is driven to move up and down to a preset height position.
In one embodiment of the present invention, a through hole is formed between the first end and the second end of the rear lever 11 of the presser foot lifting and pressing device, a push rod 12 is fixed on the housing after passing through the through hole, and the diameter of the through hole is larger than that of the push rod 12, so that the presser foot 16 can move up and down by abutting against the push rod 12 through a knee-leaning device.
In an embodiment of the present invention, the driving device 1 is a driving motor, the driving motor is fixed on the rear window panel 2, the rear window panel pad 3 is matched with the rear window panel 2, an oil seal 4 is installed on the fixing sleeve 5 to prevent oil leakage from causing shortening of the service life of the motor, the oil seal 4 is sleeved on an output shaft of the driving motor and presses the rear window panel pad 3, and the rear window panel pad 3 is fixed on the rear window panel 2. Specifically, the drive motor may rotate the stepping motor.
In one embodiment of the invention, the lifting and pressing foot pull rod 13 is fixed on the lifting and pressing foot front lever component 15 through a split retainer ring 14, and the split retainer ring 14 occupies small installation space, is easy to install and is low in cost.
In one embodiment of the invention, the drive means 1 is a rotary electromagnet or a rotary cylinder.
When the device works, the driving device 1 is connected to the controller, the motion track of the driving device 1 is controlled through software, and then the position of the presser foot can be finely adjusted.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. The presser foot lifting device of the sewing machine is characterized by comprising a driving device (1), a swing crank (6), a roller (9), a rear presser foot lifting lever (11), a presser foot lifting pull rod (13) and a front presser foot lifting lever component (15); the power output end of the driving device (1) is connected to one end of the swinging crank (6), and the other end of the swinging crank (6) is provided with the roller (9); the first end of the presser foot lifting rear lever (11) is in contact with the roller (9), and the second end of the presser foot lifting rear lever (11) is rotatably arranged on the machine shell through a rear lever shaft position screw (7); the first end of the presser foot lifting and pulling rod (13) is connected to the second end of the presser foot lifting and pulling rear lever (11) through a presser foot pulling rod screw (8), the second end of the presser foot lifting and pulling rod (13) is connected to one end of the presser foot lifting and pulling front lever component (15), and the other end of the presser foot lifting and pulling front lever component (15) is connected to the presser foot (16); the driving device (1) is suitable for driving the swing crank (6) to rotate, the roller (9) is suitable for freely rotating, the pressure foot lifting rear lever (11) is suitable for rotating under the driving of the swing crank (6) so as to drive the pressure foot lifting pull rod (13) to move back and forth, and therefore the pressure foot lifting front lever component (15) is lifted, and finally the pressure foot (16) is driven to move up and down to a preset height position.
2. The presser foot lifting device of sewing machine according to claim 1, wherein a through hole is provided between the first end and the second end of the presser foot lifting rear lever (11), a push rod (12) is fixed on the machine housing after passing through the through hole, and the diameter of the through hole is larger than that of the push rod (12).
3. The presser foot lifting device of sewing machine according to claim 2, wherein said driving device (1) is a driving motor fixed on the rear window panel (2), the rear window panel pad (3) is fitted with said rear window panel (2), an oil seal (4) is installed on the fixing sleeve (5), said oil seal (4) is fitted on the output shaft of the driving motor and presses said rear window panel pad (3), and the rear window panel pad (3) is fixed on the rear window panel (2).
4. The presser foot lifting device of sewing machine according to claim 3, wherein said presser foot lifting pull rod (13) is fixed to said presser foot front lever member (15) by means of a circlip (14).
5. The presser foot lifting device of sewing machine according to claim 1, wherein said driving means (1) is any one of a stepping motor, a rotary electromagnet and a rotary cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911388158.XA CN110904576A (en) | 2019-12-30 | 2019-12-30 | Presser foot lifting device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911388158.XA CN110904576A (en) | 2019-12-30 | 2019-12-30 | Presser foot lifting device of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110904576A true CN110904576A (en) | 2020-03-24 |
Family
ID=69813856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911388158.XA Pending CN110904576A (en) | 2019-12-30 | 2019-12-30 | Presser foot lifting device of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110904576A (en) |
-
2019
- 2019-12-30 CN CN201911388158.XA patent/CN110904576A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Address after: 317502 Zhongxiang Industrial Zone, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Applicant after: Meiji Technology Group Co.,Ltd. Address before: 317502 Zhongxiang Industrial Zone, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Applicant before: ZHEJIANG MAQI SEWING MACHINE Co.,Ltd. |