CN105350187A - Sewing machine pressure foot lifting mechanism provided with locking device - Google Patents

Sewing machine pressure foot lifting mechanism provided with locking device Download PDF

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Publication number
CN105350187A
CN105350187A CN201510630221.1A CN201510630221A CN105350187A CN 105350187 A CN105350187 A CN 105350187A CN 201510630221 A CN201510630221 A CN 201510630221A CN 105350187 A CN105350187 A CN 105350187A
Authority
CN
China
Prior art keywords
locking
armature
electromagnet
rear crank
crank
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201510630221.1A
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Chinese (zh)
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CN105350187B (en
Inventor
何清
杨志
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meiji Technology Group Co ltd
Original Assignee
Zhejiang Maqi Sewing Machine Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Maqi Sewing Machine Co Ltd filed Critical Zhejiang Maqi Sewing Machine Co Ltd
Priority to CN201510630221.1A priority Critical patent/CN105350187B/en
Publication of CN105350187A publication Critical patent/CN105350187A/en
Application granted granted Critical
Publication of CN105350187B publication Critical patent/CN105350187B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B29/00Pressers; Presser feet
    • D05B29/02Presser-control devices
    • DTEXTILES; PAPER
    • D05SEWING; EMBROIDERING; TUFTING
    • D05BSEWING
    • D05B29/00Pressers; Presser feet
    • D05B29/06Presser feet

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

The invention discloses a sewing machine pressure foot lifting mechanism provided with a locking device. The pressure foot lifting mechanism comprises a front crank, a pull bar and a rear crank; the front crank is connected to one end of the pull bar; the other end of the pull bar is connected to the rear crank; the front crank is connected to a hanger plate; the hanger plate is in contact with a joint fixedly connected with a pressure foot when the pressure foot is lifted; the rear crank is hinged to a pressure foot lifting armature disposed inside a pressure foot lifting electromagnet; the rear crank is hinged to a push bar; a locking electromagnet and a travel switch are arranged above the pressure foot lifting mechanism; the travel switch can control the locking electromagnet to be powered on; the locking electromagnet is internally provided with a locking armature; and the locking armature is connected to a return spring. By employing the pressure foot lifting mechanism, the working intensity of a sewing worker can be reduced, energy conservation and environmental protection can be realized, and labor and power are saved.

Description

The mechanism for lifting pressre of sewing machine of tool locking device
Technical field
The present invention relates to a kind of annex of Sewing machines, be specifically related to a kind of mechanism for lifting pressre of sewing machine of tool locking device.
Background technology
During with stitching sewing machine clothes, need presser feet to lift sewing is placed on presser feet under press against, compression spring compresses sewing downwards, place, arrange sewing need the time.At present, lift presser feet and have three kinds of modes: 1. pull handle; 2. knee at most lever apparatus; 3. control executive component, as electromagnet.Two hands arrange sewing, just can not pull handle.If after with knee, at most presser feet lifts by bar, sewer continues to withstand knee at most lever apparatus with knee, presser feet could be allowed to rest on upper, and sewer can be tired.If after being lifted by presser feet with electromagnet, electromagnet wants continuous drain, presser feet could be allowed to rest on upper.After electromagnet heating, magnetic force weakens, and presser feet is just lifted less than original height.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of mechanism for lifting pressre of sewing machine of tool locking device, it can use knee at most bar presser feet lifted relief presser feet rest on upper, sewer can not be tired; After in use, presser feet lifts by electromagnet, electromagnet can not continuous drain, can reduce energy consumption, avoids that electromagnet generates heat and magnetic force weakens.
For solving the problems of the technologies described above, the technical solution of the mechanism for lifting pressre of sewing machine of tool locking device of the present invention is:
Described foot lifting mechanism comprises front crank 7, pull bar 8, rear crank 9, one end of front crank 7 cylinder lever connecting rod 8, and the other end of pull bar 8 connects rear crank 9; Front crank 7 connects boatswain chair 4, and boatswain chair 4 contacts the joint 3 be fixedly connected with depression bar 2 when presser foot lifter; The hinged presser foot lifter armature 12 of rear crank 9, presser foot lifter armature 12 is positioned at presser foot lifter electromagnet 11; When presser foot lifter electromagnet 11 is energized, presser foot lifter armature 12 can move upward, rear crank 9 is driven to turn to lifting status, rear crank 9 pulls pull bar 8, pull bar 8 drives front crank 7 to rotate, and front crank 7 drives boatswain chair 4 to move upward, and boatswain chair 4 upwards pulls depression bar 2 by joint 3, thus make presser feet 1 be lifted, realize presser foot lifter action; The hinged push rod 10 of rear crank 9; Push rod 10 can move upward under external force, rear crank 9 is driven to turn to lifting status, rear crank 9 pulls pull bar 8, pull bar 8 drives front crank 7 to rotate, front crank 7 drives boatswain chair 4 to move upward, boatswain chair 4 upwards pulls depression bar 2 by joint 3, thus makes presser feet 1 be lifted, and realizes presser foot lifter action; Described foot lifting mechanism is provided with locking electromagnet 15 and travel switch 17, and travel switch 17 can control the energising locking electromagnet 15; Be provided with locking armature 14 in locking electromagnet 15, locking armature 14 connects back-moving spring 16; When locking electromagnet 15 and being energized, the elastic force that locking armature 14 can overcome back-moving spring 16 is protruding; When presser feet 1 is lifted, the foot lifting mechanism being in lifting status triggers travel switch 17, and locking electromagnet 15 is energized, locking armature 14 is protruding, locking armature 14 is pushed down by foot lifting mechanism, makes foot lifting mechanism keep lifting status, realize the locking of presser feet lifting status.
The head of described locking armature 14 forms projection, and to make foot lifting mechanism under the state pushing down locking armature 14, head can not slippage.
Described travel switch 17 also comprises magnetic induction switch, optoelectronic switch.
Described push rod 10 is moved upward under external force, rear crank 9 is driven to turn to lifting status, rear crank 9 encounters travel switch 17 in rotation process, travel switch 17 is connected, locking electromagnet 15 is energized, the elastic force that locking armature 14 overcomes back-moving spring 16 is protruding, and locking armature 14 contacts fulcrum 18; Push rod 10 is not stressed, rear crank 9 to initial position little play and push down locking armature 14; Make locking electromagnet 15 power-off, locking armature 14 can not be retracted under the pressure effect of rear crank 9, and presser feet 1 is still locked in lifting status; Again make described push rod 10 move upward under external force, push rod 10 drives rear crank 9 to continue upwards to rotate, and make rear crank 9 leave locking armature 14, locking armature 14 inwardly bounces back under the elastic force effect of back-moving spring 16; Again make push rod 10 not stress, rear crank 9 resets, and presser feet 1 falls bottom, and travel switch 17 recovers off-state.
Described presser foot lifter electromagnet 11 is energized, presser foot lifter armature 12 moves upward, rear crank 9 is driven to turn to lifting status, rear crank 9 encounters travel switch 17 in rotation process, travel switch 17 is connected, locking electromagnet 15 is energized, and the elastic force that locking armature 14 overcomes back-moving spring 16 is protruding, and locking armature 14 contacts fulcrum 18; Then make presser foot lifter electromagnet 11 power-off, presser foot lifter armature 12 does not stress, rear crank 9 to initial position little play and push down locking armature 14; Make locking electromagnet 15 power-off, locking armature 14 can not be retracted under the pressure effect of rear crank 9, and presser feet 1 is still locked in lifting status; Again make presser foot lifter electromagnet 11 be energized, presser foot lifter armature 12 drives rear crank 9 to continue upwards to rotate, and make rear crank 9 leave locking armature 14, locking armature 14 inwardly bounces back under the elastic force effect of back-moving spring 16; Make presser foot lifter electromagnet 11 power-off, presser foot lifter armature 12 does not stress, and rear crank 9 resets, and presser feet 1 falls bottom, and travel switch 17 recovers off-state.
The technique effect that the present invention can reach is:
The present invention can alleviate the working strength of sewer, realizes energy-conserving and environment-protective, and laborsaving power saving.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the schematic diagram of the mechanism for lifting pressre of sewing machine of tool locking device of the present invention, is original state in figure;
Fig. 2 is that presser feet of the present invention is in upper schematic diagram.
Description of reference numerals in figure:
1 is presser feet, and 2 is depression bar,
3 is joint, and 4 is boatswain chair,
5 is spring, and 6 is pressure regulating screw,
7 is front crank, and 8 is pull bar,
9 is rear crank, and 10 is push rod,
11 is presser foot lifter electromagnet, and 12 is presser foot lifter armature,
13 is support, and 14 is locking armature,
15 is locking electromagnet, and 16 is back-moving spring,
17 is travel switch, and 18 is fulcrum,
101 is head.
Detailed description of the invention
As shown in Figure 1, the mechanism for lifting pressre of sewing machine of tool locking device of the present invention, comprises presser feet 1, and presser feet 1 is fixedly connected with the bottom of depression bar 2, the lower end of the tip contact spring 5 of depression bar 2, the upper-end contact pressure regulating screw 6 of spring 5;
Depression bar 2 is fixedly connected with joint 3, and joint 3 contacts boatswain chair 4 when presser foot lifter, and boatswain chair 4 connects front crank 7, one end of front crank 7 cylinder lever connecting rod 8, and the other end of pull bar 8 connects rear crank 9; Rear crank 9 is connected through the hinge presser foot lifter armature 12, and presser foot lifter armature 12 is positioned at presser foot lifter electromagnet 11, and when presser foot lifter electromagnet 11 is energized, presser foot lifter armature 12 can move upward; Presser foot lifter electromagnet 11 is hinged on head 101 by support 13, and presser foot lifter electromagnet 11 can swing;
Depression bar 2 is positioned at vertically-guided hole, and depression bar 2 can only move up and down;
Front crank 7, rear crank 9 are hinged on head 101, and front crank 7, rear crank 9 can swing;
Rear crank 9 is connected through the hinge the top of push rod 10; Push rod 10 is positioned at vertically-guided hole, and push rod 10 can only move up and down;
The top of rear crank 9 is provided with locking electromagnet 15 and travel switch 17, and travel switch 17 can control the energising locking electromagnet 15;
Be provided with locking armature 14 in locking electromagnet 15, locking armature 14 connects back-moving spring 16; When locking electromagnet 15 and being energized, the elastic force that locking armature 14 can overcome back-moving spring 16 is protruding;
The bigger formation of head of locking armature 14 is protruding, and to make foot lifting mechanism (as rear crank 9) under the state pushing down locking armature 14, head projection can not slippage.
When foot lifting mechanism makes presser feet 1 lift, trigger travel switch 17, locking electromagnet 15 is energized, locking armature 14 is protruding, and locking armature 14 is pushed down by the wherein part (as rear crank 9) in foot lifting mechanism, make foot lifting mechanism keep lifting status, realize the locking of presser feet lifting status;
Locking electromagnet 15 and travel switch 17 can be arranged on respective support and be arranged on head 101 again, and position can adjust; Also travel switch 17 can be arranged in foot lifting mechanism on some parts.
Operation principle of the present invention is as follows:
Under original state, pressure regulating screw 6 pushes down the upper end of depression bar 2 by spring 5, makes presser feet 1 push down sewing; Pressure regulating screw 6 is twisted downwards, the pressure increase of presser feet 1.
Knee is bar presser foot lifter mode at most:
By knee crash device upwards push rod 10, push rod 10 drives rear crank 9 upwards to turn to lifting status counterclockwise, rear crank 9 pulls pull bar 8 to the right, pull bar 8 drives front crank 7 to rotate clockwise, front crank 7 drives boatswain chair 4 to move upward, boatswain chair 4 upwards pulls depression bar 2 by joint 3, thus makes presser feet 1 be lifted, and realizes presser foot lifter action; Presser feet 1 is lifted higher, and the top power needed for rear crank 9 is larger;
Rear crank 9 is in the process of upwards rotating counterclockwise, and rear crank 9 meets the travel switch 17 above it, and travel switch 17 is connected, and locking electromagnet 15 is energized, and the elastic force that locking armature 14 overcomes back-moving spring 16 is protruding, and locking armature 14 contacts fulcrum 18;
Knee is left by device in knee side, and push rod 10 does not stress, and rear crank 9 is to initial position little play and push down locking armature 14; The power-off of locking electromagnet 15, locking armature 14 can not be retracted under the pressure effect of rear crank 9, and presser feet 1 is still locked in lifting status;
In said process, the conduction time of locking electromagnet 15 can arrange very short;
Again by knee crash device upwards push rod 10, push rod 10 drives rear crank 9 to continue upwards to rotate, and make rear crank 9 leave locking armature 14, locking armature 14 inwardly bounces back under the elastic force effect of back-moving spring 16;
Knee is left again by device in knee side, and push rod 10 does not stress, and rear crank 9 resets, and presser feet 1 falls bottom, and travel switch 17 recovers off-state.
Electromagnet presser foot lifter mode:
Presser foot lifter electromagnet 11 is energized, presser foot lifter armature 12 moves upward, rear crank 9 is driven to rotate counterclockwise to lifting status, rear crank 9 pulls pull bar 8 to the right, pull bar 8 drives front crank 7 to rotate clockwise, and front crank 7 drives boatswain chair 4 to move upward, and boatswain chair 4 upwards pulls depression bar 2 by joint 3, thus make presser feet 1 be lifted, realize presser foot lifter action;
Rear crank 9 is in the process of upwards rotating counterclockwise, and rear crank 9 meets the travel switch 17 above it, and travel switch 17 is connected, and locking electromagnet 15 is energized, and the elastic force that locking armature 14 overcomes back-moving spring 16 is protruding, and locking armature 14 contacts fulcrum 18;
Then make presser foot lifter electromagnet 11 power-off, presser foot lifter armature 12 does not stress, rear crank 9 to initial position little play and push down locking armature 14;
The power-off of locking electromagnet 15, because the head locking armature 14 is bigger, locking armature 14 can not be retracted under the pressure effect of rear crank 9, and presser feet 1 is still locked in lifting status;
In said process, the conduction time of presser foot lifter electromagnet 11 and locking electromagnet 15 can arrange very short;
Again make presser foot lifter electromagnet 11 be energized, presser foot lifter armature 12 drives rear crank 9 to continue upwards to rotate, and make rear crank 9 leave locking armature 14, locking armature 14 inwardly bounces back under the elastic force effect of back-moving spring 16;
Make presser foot lifter electromagnet 11 power-off, presser foot lifter armature 12 does not stress, and rear crank 9 resets, and presser feet 1 falls bottom, and travel switch 17 recovers off-state.

Claims (5)

1. the mechanism for lifting pressre of sewing machine of a tool locking device, it is characterized in that: described foot lifting mechanism comprises front crank (7), pull bar (8), rear crank (9), one end of front crank (7) cylinder lever connecting rod (8), the other end of pull bar (8) connects rear crank (9);
Front crank (7) connects boatswain chair (4), and boatswain chair (4) contacts the joint (3) be fixedly connected with depression bar (2) when presser foot lifter;
The hinged presser foot lifter armature (12) of rear crank (9), presser foot lifter armature (12) is positioned at presser foot lifter electromagnet (11); When presser foot lifter electromagnet (11) is energized, presser foot lifter armature (12) can move upward, rear crank (9) is driven to turn to lifting status, rear crank (9) pulls pull bar (8), before pull bar (8) drives, crank (7) rotates, and front crank (7) drives boatswain chair (4) to move upward, and boatswain chair (4) upwards pulls depression bar (2) by joint (3), thus make presser feet (1) be lifted, realize presser foot lifter action;
Rear crank (9) hinged push rod (10); Push rod (10) can move upward under external force, rear crank (9) is driven to turn to lifting status, rear crank (9) pulls pull bar (8), before pull bar (8) drives, crank (7) rotates, front crank (7) drives boatswain chair (4) to move upward, boatswain chair (4) upwards pulls depression bar (2) by joint (3), thus makes presser feet (1) be lifted, and realizes presser foot lifter action;
Described foot lifting mechanism is provided with locking electromagnet (15) and travel switch (17), and travel switch (17) can control the energising locking electromagnet (15); Be provided with locking armature (14) in locking electromagnet (15), locking armature (14) connects back-moving spring (16); When locking electromagnet (15) energising, the elastic force that locking armature (14) can overcome back-moving spring (16) is protruding;
When presser feet (1) is lifted, the foot lifting mechanism being in lifting status triggers travel switch (17), locking electromagnet (15) is energized, locking armature (14) is protruding, locking armature (14) is pushed down by foot lifting mechanism, make foot lifting mechanism keep lifting status, realize the locking of presser feet lifting status.
2. the mechanism for lifting pressre of sewing machine of tool locking device according to claim 1, is characterized in that: the head of described locking armature (14) forms projection, and to make foot lifting mechanism under the state pushing down locking armature (14), head can not slippage.
3. the mechanism for lifting pressre of sewing machine of tool locking device according to claim 1, is characterized in that: described travel switch (17) also comprises magnetic induction switch, optoelectronic switch.
4. the mechanism for lifting pressre of sewing machine of tool locking device according to claim 1, it is characterized in that: described push rod (10) is moved upward under external force, rear crank (9) is driven to turn to lifting status, rear crank (9) encounters travel switch (17) in rotation process, travel switch (17) is connected, locking electromagnet (15) is energized, and the elastic force that locking armature (14) overcomes back-moving spring (16) is protruding, locking armature (14) contact fulcrum (18);
Push rod (10) is not stressed, rear crank (9) to initial position little play and push down locking armature (14); Make locking electromagnet (15) power-off, locking armature (14) can not be retracted under the pressure effect of rear crank (9), and presser feet (1) is still locked in lifting status;
Described push rod (10) is again made to move upward under external force, push rod (10) drives rear crank (9) to continue upwards to rotate, make rear crank (9) leave locking armature (14), locking armature (14) inwardly bounces back under the elastic force effect of back-moving spring (16);
Again make push rod (10) not stress, rear crank (9) resets, and presser feet (1) falls bottom, and travel switch (17) recovers off-state.
5. the mechanism for lifting pressre of sewing machine of tool locking device according to claim 1, it is characterized in that: described presser foot lifter electromagnet (11) is energized, presser foot lifter armature (12) moves upward, rear crank (9) is driven to turn to lifting status, rear crank (9) encounters travel switch (17) in rotation process, travel switch (17) is connected, locking electromagnet (15) is energized, the elastic force that locking armature (14) overcomes back-moving spring (16) is protruding, locking armature (14) contact fulcrum (18);
Then make presser foot lifter electromagnet (11) power-off, presser foot lifter armature (12) does not stress, rear crank (9) to initial position little play and push down locking armature (14); Make locking electromagnet (15) power-off, locking armature (14) can not be retracted under the pressure effect of rear crank (9), and presser feet (1) is still locked in lifting status;
Again make presser foot lifter electromagnet (11) be energized, presser foot lifter armature (12) drives rear crank (9) to continue upwards to rotate, and make rear crank (9) leave locking armature (14), locking armature (14) inwardly bounces back under the elastic force effect of back-moving spring (16);
Make presser foot lifter electromagnet (11) power-off, presser foot lifter armature (12) does not stress, and rear crank (9) resets, and presser feet (1) falls bottom, and travel switch (17) recovers off-state.
CN201510630221.1A 2015-09-29 2015-09-29 Has the mechanism for lifting pressre of sewing machine of locking device Active CN105350187B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105951312A (en) * 2016-07-08 2016-09-21 杰克缝纫机股份有限公司 Method for controlling thread cutting and press foot lifting movement of sewing machine
CN106498633A (en) * 2016-12-31 2017-03-15 杰克缝纫机股份有限公司 A kind of sewing machine with new type auto presser foot lifter structure
CN106676766A (en) * 2016-12-31 2017-05-17 杰克缝纫机股份有限公司 Novel presser foot lifting electromagnet structure
CN108251977A (en) * 2018-04-08 2018-07-06 苏州胜璟电磁科技有限公司 It is a kind of apart from adjustable solenoid
CN109652927A (en) * 2018-12-29 2019-04-19 杰克缝纫机股份有限公司 Presser feet control method, device, computer equipment and storage medium

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CN104047122A (en) * 2014-06-27 2014-09-17 台州拓卡奔马机电科技有限公司 Automatic presser foot lifting device of thick material lockstitch sewing machine
CN204029694U (en) * 2014-07-22 2014-12-17 浙江上美输配电有限公司 High-voltage switch cabinet grounding switch interlock
CN204174394U (en) * 2014-10-31 2015-02-25 浙江美机缝纫机有限公司 A kind of automatic needle-foot-lifting mechanism of Sewing machines
CN204298596U (en) * 2014-12-10 2015-04-29 浙江美机缝纫机有限公司 The built-in automatic needle-foot-lifting mechanism of sewing machine

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CN2711489Y (en) * 2004-07-28 2005-07-20 冀东石油勘探开发公司 Micro energy consumption valve cutting off device
CN101899731A (en) * 2009-05-27 2010-12-01 浙江日发纺织机械有限公司 Control mechanism for delay start of spinning device rotor
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105951312A (en) * 2016-07-08 2016-09-21 杰克缝纫机股份有限公司 Method for controlling thread cutting and press foot lifting movement of sewing machine
CN106498633A (en) * 2016-12-31 2017-03-15 杰克缝纫机股份有限公司 A kind of sewing machine with new type auto presser foot lifter structure
CN106676766A (en) * 2016-12-31 2017-05-17 杰克缝纫机股份有限公司 Novel presser foot lifting electromagnet structure
CN106676766B (en) * 2016-12-31 2019-04-02 杰克缝纫机股份有限公司 A kind of novel presser foot lifter electromagnet structure
CN106498633B (en) * 2016-12-31 2019-05-10 杰克缝纫机股份有限公司 A kind of sewing machine with new type auto presser foot lifter structure
CN108251977A (en) * 2018-04-08 2018-07-06 苏州胜璟电磁科技有限公司 It is a kind of apart from adjustable solenoid
CN109652927A (en) * 2018-12-29 2019-04-19 杰克缝纫机股份有限公司 Presser feet control method, device, computer equipment and storage medium
CN109652927B (en) * 2018-12-29 2021-05-04 杰克缝纫机股份有限公司 Presser foot control method and device, computer equipment and storage medium

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Inventor after: Zhai Laixiang

Inventor before: He Qing

Inventor before: Yang Zhi

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Address after: No. 193, Xinxin Middle Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province

Patentee after: Meiji Technology Group Co.,Ltd.

Address before: No. 193, Xinxin Middle Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province

Patentee before: ZHEJIANG MAQI SEWING MACHINE Co.,Ltd.

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Denomination of invention: Sewing machine presser foot lifting mechanism with locking device

Effective date of registration: 20230902

Granted publication date: 20180807

Pledgee: Wenling sub branch of Postal Savings Bank of China Ltd.

Pledgor: Meiji Technology Group Co.,Ltd.

Registration number: Y2023980054984

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