CN207227702U - A kind of presser foot drive of sewing machine - Google Patents
A kind of presser foot drive of sewing machine Download PDFInfo
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- CN207227702U CN207227702U CN201721237544.5U CN201721237544U CN207227702U CN 207227702 U CN207227702 U CN 207227702U CN 201721237544 U CN201721237544 U CN 201721237544U CN 207227702 U CN207227702 U CN 207227702U
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- block
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- sliding slot
- sliding
- compression bar
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Abstract
The utility model provides a kind of presser foot drive of sewing machine, belongs to sewing machine technique field.It solves the problems such as easily stuck in existing presser foot drive operational process.The presser foot drive of this sewing machine, including the compression bar being threaded through on casing, the crank being hinged on casing and the sliding block being set on compression bar, sliding block can drive compression bar to move up and down, rotational pin is provided with crank, drive block is rotatably connected on rotational pin, sliding slot is provided with the lateral surface of sliding block, drive block is in sliding slot and can horizontally slip in sliding slot.This presser foot drive has the advantages that good operation stability.
Description
Technical field
The utility model belongs to sewing machine technique field, is related to a kind of presser foot drive of sewing machine.
Background technology
Sewing machine is the machine for being sutured sewing by suture, including needle bar mechanism, Yarn taking-up mechanism, feed mechanism, hooking
Mechanism, hold-down mechanism, bobbin winder device and lubricating arrangement etc..Sewing machine can be divided into according to frame mode or sewing technology mode
Flat seam machine, chain seam machine, overedger, lockstitch button holder and closer etc..Hold-down mechanism is also known as feeding pressure mechanism, is to apply pressure to sewing
Mechanism, be divided into compressor arm hold-down mechanism, alternately hold-down mechanism and roller compression mechanism in hold-down mechanism again.Wherein, compressor arm
Hold-down mechanism is the hold-down mechanism of single presser feet action.It is opposite with hold-down mechanism that pressure foot lifting machine is additionally provided with sewing machine
Structure, that is, release the mechanism to sewing pressure.Presser bar lifting mechanisms are divided into portable presser bar lifting mechanisms again, knee steps on pressure-raising foot elevator
Structure and by electric and pneumatic or hydraulic operation presser bar lifting mechanisms.Presser foot drive includes hold-down mechanism and pressure foot lifting
Mechanism.
Chinese patent literature data, which discloses, proposes a kind of sewing machine [application number：2015107541525；Publication number：
105986372A], including presser feet is installed on the lower end of compression bar, and the fabric to be sewed is pressed, compression bar can on move down
Sewing machine case is supported in dynamicly；Elevating lever is pressed, presser feet is lifted relative to fabric；Actuator, makes pressing elevating lever
Fabric is compressed to fix slippage to decline；Spring body, between actuator and presser feet, utilizes the fixation for pressing elevating lever
The decline of slippage and shrink, and the applying power of repulsion for offsetting fabric is assigned to presser feet；Encoder, to the slippage of presser feet
It is detected；And operational part, according to presser feet compress fabric while continue to decline during two time points volume
The slippage of code device detection, the thickness of computing fabric.Compression bar forms on bar radial direction the flange extended halfway, with this
Flange Embedded compression spring for bearing-surface.The front end of pressing elevating lever becomes ring-type, and is embedded in compression bar, to compress spring into
Row extruding.Compression bar is pressed via compression spring by flange, and is utilized and pressed elevating lever and decline.In pressing elevating lever on compression bar
Front end directly over form on bar radial direction the flange extended.When pressing elevating lever lifting, its front end is by flange
Push away, so that compression bar rises.
During pressing elevating lever driving compression bar raising and lowering swung centered on the cardinal extremity for pressing elevating lever,
Length due to pressing elevating lever is constant, and the running orbit of pressing elevating lever front end is arc-shaped, due to pressing elevating lever
Front end is set on compression bar, and compression bar is threaded through in sewing machine case and cannot be swung, and is so be easy to cause pressing and is risen
The front end of drop bar is stuck on compression bar during being slided on compression bar, and compression bar is stuck on sewing machine case, makes compression bar
The up and down motion that cannot stablize on sewing machine case so that presser foot drive fluctuation of service.
The content of the invention
The purpose of this utility model is in view of the above-mentioned problems existing in the prior art, it is proposed that a kind of presser feet of sewing machine drives
Motivation structure, the technical problem of solution are how to improve the stability of mechanism operation.
The purpose of this utility model can be realized by following technical proposal：
A kind of presser foot drive of sewing machine, including the compression bar being threaded through on casing, the crank that is hinged on casing with
And the sliding block on compression bar is set in, the sliding block can drive compression bar to move up and down, it is characterised in that be provided with the crank
Rotational pin, is rotatably connected to drive block on the rotational pin, sliding slot is provided with the lateral surface of the sliding block, the drive block is embedding
It can horizontally slip in sliding slot and in sliding slot.
The lower end of compression bar is fixedly connected with presser feet.Crank, which rotates, drives drive block and gasket being hinged around crank and casing
Point rotates, drive block around the rotation of crank and the hinge joint of casing, be decomposed into drive block around the rotation of rotational pin, in sliding slot
The interior up and down motion for horizontally slipping and driving sliding block, driving the up and down motion of sliding block makes sliding block drive compression bar to move up and down,
Realize the oscilaltion of compression bar and presser feet.
Since drive block can horizontally slip and be rotatably connected on rotational pin in sliding slot, make drive block sliding in sliding slot
The property of can adapt to is rotated around rotational pin in dynamic process, so that drive block smoothly slides in sliding slot, is reduced because driving
The stuck situation on sewing machine case of compression bar occurs for arc in the movement locus of block, improves the stability of mechanism operation.
In the presser foot drive of above-mentioned sewing machine, the upper side of the sliding slot and downside are plane, described
The upper and lower surface of drive block is plane, and the upper surface of the drive block is abutted on the upper side of sliding slot, the drive
The lower surface of motion block is abutted on the downside of sliding slot.
It can so prevent drive block from inordinate rotation occurring during being rotated around rotational pin, reduce inordinate rotation and draw
Rise drive block it is stuck in sliding slot the occurrence of, improve mechanism operation stability.
In the presser foot drive of above-mentioned sewing machine, bar shaped is both provided with the upper side of the sliding slot and downside
Sliding block is run through at groove, the both ends of the sliding slot and the both ends of bar-shaped trough.
The setting of bar-shaped trough can prevent the side of drive block and sliding slot from forming containing vacuum state, ensure drive block in cunning
Smoothly slided in groove, improve the stability of mechanism operation.Sliding block is run through at the both ends of sliding slot and the both ends of bar-shaped trough, can be to prevent
Only drive block improves the stability of mechanism operation because the length of sliding slot is inadequate and stuck in sliding slot.
In the presser foot drive of above-mentioned sewing machine, rotatable gasket, the pad are arranged with the rotational pin
The lateral surface that piece is provided with sliding slot between crank and drive block and on the outside of sliding block, the sliding block is confined planes,
The gasket can be abutted on confined planes.
The setting of gasket can limit the rotation of sliding block, and what drive block caused by reduction sliding block rotation cannot be in sliding slot is suitable
It is smooth to slide, so as to improve the stability of mechanism operation.Gasket is rotatably coupled on rotational pin at the same time, can be to avoid gasket
Set to rotate drive block around the adaptability of rotational pin and have an impact, ensure smooth slip of the drive block in sliding slot.
In the presser foot drive of above-mentioned sewing machine, lower fixed block, the lower fixed block are fixed with the compression bar
On be provided with guide part, be provided with guide groove on the casing, the guide part is in guide groove and can be in guide groove
Move up and down.
The setting of guide part and guide groove can prevent compression bar from rotating, and presser feet rotates in anti-locking mechanism operational process,
Improve the stability of mechanism operation.
In the presser foot drive of above-mentioned sewing machine, fixed block, the sliding block energy are further fixed on the compression bar
Enough to be slided up and down on compression bar, between upper fixed block and lower fixed block, the sliding block can be resisted against solid the sliding block
Determine on block, spring is provided between the sliding block and lower fixed block, the upper end of the spring is resisted against on sliding block, the spring
Lower end is resisted against on lower fixed block.
Sliding block upward sliding is resisted against on fixed block, and sliding block, which continues to rise, can just drive compression bar to rise, and lift presser feet
Rise.After sliding block slides down off upper fixed block, general who has surrendered's cloth presser is on the feeding tooth of sewing machine under presser feet.Presser feet is by cloth
After being pressed on the feeding tooth of sewing machine, sliding block is downward, and the amount increase of spring-compressed, presser feet increases the thrust of cloth；Sliding block
Upwards, the amount of spring-compressed is reduced, and presser feet reduces the thrust of cloth.Just can by position of the adjusting slider on compression bar
Realize the lifting of presser feet and adjust thrust of the presser feet to cloth.
Compared with prior art, the utility model has the following advantages：
Drive block is rotatablely connected on the rotational pin of crank, drive block can slide in sliding slot, ensure that drive block can
It is free to slide in sliding slot, when reducing mechanism operation the occurrence of stuck interim card, improve the stability of mechanism operation.Gasket position
In the outside of sliding block, the limiting section of gasket can be abutted on the confined planes of sliding block, set guide groove and guide part, drive block
Upper surface abuts on the upper side of sliding slot and the lower surface of drive block is abutted on the downside of sliding slot, in the upper side of sliding slot
With bar-shaped trough is respectively provided with downside, further improve mechanism operation stability.
Brief description of the drawings
Fig. 1 is the stereogram of this presser foot drive；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 is the partial exploded view of this presser foot drive；
Fig. 4 is the partial perspective view that this presser foot drive is installed on casing.
In figure, 1, casing；1a, guide groove；2nd, compression bar；3rd, crank；4th, sliding block；4a, sliding slot；4b, bar-shaped trough；It is 4c, spacing
Face；5th, rotational pin；6th, gasket；7th, drive block；8th, upper fixed block；9th, lower fixed block；9a, guide part；10th, spring；11st, presser feet；
12nd, motor；13rd, gear；14th, sector；15th, pull rod.
Embodiment
It is specific embodiment of the utility model and with reference to attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
Embodiment one
As Figure 1-Figure 4, a kind of presser foot drive of sewing machine, in the casing 1 of sewing machine, including wears
The driving mechanism that compression bar 2 and driving compression bar 2 on casing 1 lift, the lower end of compression bar 2 is fixedly connected with presser feet 11.Driving machine
Structure includes motor 12, gear 13, sector 14, pull rod 15, crank 3 and sliding block 4, and motor 12 is fixed on casing 1, and gear 13 is solid
It is scheduled in the shaft of motor 12, sector 14 is hinged on casing 1, and gear 13 is engaged with sector 14, and pull rod 15 is hinged on fan
On shape tooth 14, the middle part of crank 3 is hinged on casing 1, and one end of crank 3 and pull rod 15 are hinged, fixed on the other end of crank 3
It is connected with rotational pin 5.Sliding block 4 is set on compression bar 2 and can be slided up and down on compression bar 2, and fixed block is fixed with compression bar 2
8 and lower fixed block 9, between upper fixed block 8 and lower fixed block 9, sliding block 4 can be resisted against on fixed block 8 sliding block 4, sliding
Spring 10 is provided between block 4 and lower fixed block 9, the upper end of spring 10 is resisted against on sliding block 4, and the lower end of spring 10 is resisted against down
On fixed block 9.Guide part 9a is provided with lower fixed block 9, guide groove 1a is provided with casing 1, guide part 9a is embedded in guide groove
It can move up and down in 1a and in guide groove 1a.
Gasket 6 and drive block 7 are rotatably connected on rotational pin 5, in annular shape, gasket 6 and drive block 7 are set in gasket 6
It can rotate on rotational pin 5 and on rotational pin 5.There is confined planes 4c on the lateral surface of sliding block 4, cunning is offered on confined planes 4c
Groove 4a, drive block 7 is in sliding slot 4a and can horizontally slip in sliding slot 4a.The upper side of sliding slot 4a and downside are flat
Face, the upper and lower surface of drive block 7 is plane, and the upper surface of drive block 7 is abutted on the upper side of sliding slot 4a, driving
The lower surface of block 7 is abutted on the downside of sliding slot 4a.Bar-shaped trough 4b is both provided with the upper side of sliding slot 4a and downside, it is sliding
Sliding block 4 is run through in the both ends of groove 4a with the both ends of bar-shaped trough 4b.Gasket 6 is between crank 3 and drive block 7, and gasket 6 is positioned at cunning
The outside of block 4.The peripheral part of gasket 6 can be abutted on confined planes 4c.
12 rotation driven gear 13 of motor rotates, and sector 14 and 13 engagement rotation of gear, sector 14 are rotated to drive and drawn
Bar 15 moves, so as to drive crank 3 to move up and down around crank 3 and the hinged spot wobble of casing 1,3 wobble drive sliding block 4 of crank
Sliding block 4 is set to drive compression bar 2 to move up and down.4 upward sliding of sliding block is resisted against on fixed block 8, and sliding block 4 is resisted against fixed block 8
Afterwards, sliding block 4, which continues to rise, just can drive compression bar 2 to rise, and make 11 lifting of presser feet.When sliding block 4 slides down off upper fixed block 8
Afterwards, 11 times general who has surrendered's cloth pressers of presser feet are on the feeding tooth of sewing machine.Presser feet 11 by cloth presser on the feeding tooth of sewing machine after, it is sliding
4 slide downward of block, then the amount increase that spring 10 compresses, presser feet 11 increase the thrust of cloth；4 upward sliding of sliding block, then bullet
The amount that spring 10 compresses is reduced, and presser feet 11 reduces the thrust of cloth.
Since drive block 7 is rotatably connected on rotational pin 5 and can be horizontally slipped in sliding slot 4a, reduce because drive block
The stuck situation on sewing machine case 1 of compression bar 2 occurs for arc in 7 movement locus；At the same time crank 3 and drive block 7 it
Between set gasket 6, limitation sliding block 4 around compression bar 2 rotation so that ensure drive block 7 can in the smooth slip in sliding slot 4a,
When reducing mechanism operation the occurrence of stuck interim card, the stability of mechanism operation is improved.Gasket 6 is rotatably coupled at the same time
On rotational pin 5, drive block 7 can be rotated around the adaptability of rotational pin 5 to avoid the setting of gasket 6 and had an impact, ensure driving
Smooth slip of the block 7 in sliding slot 4a.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (6)
1. a kind of presser foot drive of sewing machine, including be threaded through on casing (1) compression bar (2), be hinged on casing (1)
Crank (3) and the sliding block (4) being set on compression bar (2), the sliding block (4) can drive compression bar (2) to move up and down, its feature
It is, rotational pin (5) is provided with the crank (3), drive block (7), the sliding block are rotatably connected on the rotational pin (5)
(4) sliding slot (4a) is provided with lateral surface, the drive block (7) is interior embedded in sliding slot (4a) and can be in the interior left and right of sliding slot (4a)
Slide.
2. the presser foot drive of sewing machine according to claim 1, it is characterised in that the upper side of the sliding slot (4a)
It is plane with downside, the upper and lower surface of the drive block (7) is plane, the upper surface of the drive block (7)
Abut on the upper side of sliding slot (4a), the lower surface of the drive block (7) is abutted on the downside of sliding slot (4a).
3. the presser foot drive of sewing machine according to claim 2, it is characterised in that the upper side of the sliding slot (4a)
Be both provided with bar-shaped trough (4b) on downside, sliding block is run through in the both ends of the sliding slot (4a) with the both ends of bar-shaped trough (4b)
(4)。
4. according to the presser foot drive of any sewing machines of claim 1-3, it is characterised in that the rotational pin (5)
On be arranged with rotatable gasket (6), the gasket (6) is located between crank (3) and drive block (7) and positioned at sliding block (4)
Outside, the lateral surface that sliding slot (4a) is provided with the sliding block (4) is confined planes (4c), and the gasket (6) can abut in limit
On plane (4c).
5. according to the presser foot drive of any sewing machines of claim 1-3, it is characterised in that on the compression bar (2)
Lower fixed block (9) is fixed with, guide part (9a) is provided with the lower fixed block (9), guide groove is provided with the casing (1)
(1a), the guide part (9a) is in guide groove (1a) and can move up and down in guide groove (1a).
6. the presser foot drive of sewing machine according to claim 5, it is characterised in that also fixed on the compression bar (2)
Have upper fixed block (8), the sliding block (4) can slide up and down on compression bar (2), the sliding block (4) be located at upper fixed block (8) and
Between lower fixed block (9), the sliding block (4) can be resisted against on fixed block (8), the sliding block (4) and lower fixed block (9) it
Between be provided with spring (10), the upper end of the spring (10) is resisted against on sliding block (4), and the lower end of the spring (10) is resisted against down
On fixed block (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721237544.5U CN207227702U (en) | 2017-09-25 | 2017-09-25 | A kind of presser foot drive of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721237544.5U CN207227702U (en) | 2017-09-25 | 2017-09-25 | A kind of presser foot drive of sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN207227702U true CN207227702U (en) | 2018-04-13 |
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ID=61864086
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721237544.5U Active CN207227702U (en) | 2017-09-25 | 2017-09-25 | A kind of presser foot drive of sewing machine |
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| CN (1) | CN207227702U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629413A (en) * | 2018-06-25 | 2019-12-31 | 浙江中捷缝纫科技有限公司 | Sewing machine presser foot mechanism and sewing machine with same |
| CN111379083A (en) * | 2018-12-30 | 2020-07-07 | 浙江中捷缝纫科技有限公司 | Presser foot lifting device, sewing machine and control method of presser foot lifting device |
| CN111379085A (en) * | 2019-12-02 | 2020-07-07 | 浙江广和缝纫机有限公司 | Pressure adjusting device for presser foot of sewing machine |
| CN111394895A (en) * | 2019-12-02 | 2020-07-10 | 浙江广和缝纫机有限公司 | Pressure control device for presser foot of sewing machine |
-
2017
- 2017-09-25 CN CN201721237544.5U patent/CN207227702U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629413A (en) * | 2018-06-25 | 2019-12-31 | 浙江中捷缝纫科技有限公司 | Sewing machine presser foot mechanism and sewing machine with same |
| CN111379083A (en) * | 2018-12-30 | 2020-07-07 | 浙江中捷缝纫科技有限公司 | Presser foot lifting device, sewing machine and control method of presser foot lifting device |
| CN111379085A (en) * | 2019-12-02 | 2020-07-07 | 浙江广和缝纫机有限公司 | Pressure adjusting device for presser foot of sewing machine |
| CN111394895A (en) * | 2019-12-02 | 2020-07-10 | 浙江广和缝纫机有限公司 | Pressure control device for presser foot of sewing machine |
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