CN106988030A - A kind of feed mechanism controlled by foot lifting mechanism moves down structure and sewing machine - Google Patents
A kind of feed mechanism controlled by foot lifting mechanism moves down structure and sewing machine Download PDFInfo
- Publication number
- CN106988030A CN106988030A CN201710402957.2A CN201710402957A CN106988030A CN 106988030 A CN106988030 A CN 106988030A CN 201710402957 A CN201710402957 A CN 201710402957A CN 106988030 A CN106988030 A CN 106988030A
- Authority
- CN
- China
- Prior art keywords
- presser foot
- foot lifter
- eccentric shaft
- retainer
- presser
- Prior art date
- 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.)
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention provides a kind of feed mechanism controlled by foot lifting mechanism and moves down structure and sewing machine, feed mechanism, which moves down structure, includes the presser foot lifter spanner in foot lifting mechanism, it is installed in rotation on the eccentric shaft in casing, retainer with the second swing pivot, and the feeding tooth installed in retainer one end, chute is offered in retainer, eccentric shaft has shaft body portion and eccentric setting in the eccentric shaft portion in shaft body portion, presser foot lifter spanner is connected by the first transmission mechanism with the shaft body portion of eccentric shaft, the eccentric shaft portion of eccentric shaft is installed in rotation in the chute of retainer, and coordinate with slide；When presser foot lifter, presser foot lifter spanner swings around the first swing pivot and drives retainer to be swung around the second swing pivot by the first transmission mechanism and eccentric shaft, the one end for being provided with feeding tooth on retainer is set to be displaced downwardly to below the upper surface of needle plate, ensure that presser feet lifts the effective depth between rear presser feet and needle plate, and then easily sending into sewing between presser feet and needle plate before sewing starts.
Description
Technical field
Structure is moved down the present invention relates to a kind of feed mechanism controlled by foot lifting mechanism.
Include the sewing machine that the above-mentioned feed mechanism controlled by foot lifting mechanism moves down structure the invention further relates to a kind of.
Background technology
Main feed dog frame and differential cloth-feeding retainer are equipped with existing overedger, the end of main feed dog frame is connected with
Active tooth, the end of differential cloth-feeding retainer is connected with differential tooth, and active tooth and differential tooth collectively form feeding tooth.Main feed dog frame
Driven with one section eccentric axial portion of the differential cloth-feeding retainer all on main shaft by sliding block, the two ends back-up ring of sliding block is simultaneously tight, partially
Heart axle portion angle adjustment is well screwed later, so that active tooth and differential tooth and the angle of needle plate upper surface are certain.
Overedger in the condition of normal use, during when moving to range on shank, positioned at highest point, as shown in figure 1, active tooth and
Differential tooth (i.e. feeding tooth 5) is generally greater than the upper surface 0.8-1.5mm of needle plate 25.When the timing of presser foot lifter height one, presser feet can be put into
The thickness of sewing between component 17 and needle plate 25 should be pressure foot lower surface and needle plate upper surface in presser foot component in theory
The distance between, but shank is located at highest point, active tooth and differential tooth all higher than needle plate 0.8-1.5mm during due to presser foot lifter, makes
0.8-1.5mm will be reduced by obtaining the thickness for the sewing that can be actually put between pressing plate and needle plate, so as to cause sewing unfavorable before starting
Sent into by sewing between presser feet and needle plate.
The content of the invention
The shortcoming of prior art in view of the above, is controlled it is an object of the invention to provide a kind of by foot lifting mechanism
Feed mechanism moves down structure, realizes that feeding tooth is moved down while presser foot lifter, is easy to the feeding before sewing.
To achieve the above object, the present invention provides a kind of feed mechanism controlled by foot lifting mechanism and moves down structure, including
Presser foot lifter spanner in foot lifting mechanism, the presser foot lifter spanner has the first swing pivot, in addition to is installed in rotation on machine
Opened up in eccentric shaft in shell, the retainer with the second swing pivot and the feeding tooth installed in retainer one end, the retainer
There is chute, the eccentric shaft has shaft body portion and eccentric setting in the eccentric shaft portion in shaft body portion, and the presser foot lifter spanner leads to
Cross the first transmission mechanism with the shaft body portion of eccentric shaft to be connected, the eccentric shaft portion of the eccentric shaft is installed in rotation on retainer
Chute in and with slide coordinate；When presser foot lifter, the presser foot lifter spanner swings and passed through around the first swing pivot
First transmission mechanism and eccentric shaft driving retainer are swung around the second swing pivot, make to be provided with retainer under one end of feeding tooth
Move.
Further, the chute is opened in the other end of retainer, and the second swing pivot of retainer is located at chute and sent
Between material tooth；The eccentric shaft portion is connected with retainer by sliding block, and the sliding block is rotationally enclosed in eccentric shaft portion and can
It is slidably mounted in chute, and sliding block is contacted with the cell wall of chute for face.
Preferably, the retainer includes the main feed dog frame and differential cloth-feeding retainer being arranged side by side along the axial direction of eccentric shaft,
The feeding tooth is included installed in the active tooth of main feed dog frame one end and installed in the differential of differential cloth-feeding retainer one end
Tooth.
Preferably, the eccentric shaft portion of the eccentric shaft is respectively fixed with back-up ring and pad in the both sides of retainer.
Further, first transmission mechanism includes the first suspension hook and moves down driving crank, the one of first suspension hook
End is connected with presser foot lifter spanner, and the other end of first suspension hook is connected with moving down one end of driving crank, described to move down
The other end of driving crank is fixed on the shaft body portion of eccentric shaft.
Preferably, in addition to crank reduction torsion spring, the shaft body portion of the eccentric shaft is rotatably supported at the first axle sleeve
In, the first axle sleeve is arranged in casing, the crank reduction torsion spring be enclosed on first axle put and crank reduction torsion spring two ends point
Do not abutted against with moving down driving crank and casing.
Further, in addition to it is fixed on the limit base of casing and is threadedly connected to the stop screw of limit base, it is described
Swaying direction of the stop screw along presser foot lifter spanner is located at the side of presser foot lifter spanner, and the end of stop screw passes through limit base
Afterwards just to presser foot lifter spanner.
Preferably, it is cased with locking spring on the stop screw, the head of the two ends of locking spring respectively with stop screw
Abutted against with limit base.
The present invention also provides a kind of sewing machine, including foot lifting mechanism, and the foot lifting mechanism includes swingable presser foot lifter
Spanner, presser feet arm and the presser foot component installed in presser feet arm one end, the presser foot lifter spanner pass through the second transmission mechanism and presser feet
Arm is connected, in addition to feed mechanism as described above moves down structure；When presser foot lifter spanner is swung around the first swing pivot, lift
Presser feet spanner drives the one end for being provided with feeding tooth on retainer to move down by the first transmission mechanism and eccentric shaft, and presser foot lifter spanner leads to
Cross the second transmission mechanism driving presser feet arm and presser foot component is moved up.
Further, second transmission mechanism includes the second suspension hook, the second axle sleeve in casing, rotationally
The presser foot lifter lever that is enclosed on the second axle sleeve, the presser feet axle being rotatably supported in the second axle sleeve and it is fixed on presser feet axle
Presser foot lifter back-up ring, one end of the presser feet axle has a presser feet eccentric shaft portion of eccentric setting, one end of second suspension hook with
Presser foot lifter spanner is connected, and the other end of second suspension hook is connected with one end of presser foot lifter lever, the presser foot lifter lever
The other end abutted against with presser foot lifter back-up ring, the presser feet eccentric shaft portion is connected with the other end of presser feet arm.
Preferably, the foot lifting mechanism also includes the lever reduction torsion spring being enclosed on the second axle sleeve, and the lever resets
The two ends of torsion spring are abutted against with presser foot lifter lever and casing respectively.
Preferably, in the cooperation of the tie point of second suspension hook and presser foot lifter lever and presser foot lifter lever and the second axle sleeve
First arm of force of presser foot lifter lever, cooperation center and the presser foot lifter lever of the presser foot lifter lever and the second axle sleeve are formed between the heart
Second arm of force of presser foot lifter lever is formed between the tie point of presser foot lifter back-up ring, the length of first arm of force is more than the second power
The length of arm.
As described above, the feed mechanism of the present invention controlled by foot lifting mechanism moves down structure and sewing machine, have
Following beneficial effect：
In the application, feed mechanism moves down structure and driven by the presser foot lifter spanner in foot lifting mechanism, so as to realize in lift
The one end for being provided with feeding tooth while presser feet on retainer is moved down, and feeding tooth is displaced downwardly to below the upper surface of needle plate, not from pin
The upper table of plate is exposed upwardly, it is ensured that presser feet lifts the effective depth between rear presser feet and needle plate, and then holds before sewing starts
Easily sewing is sent between presser feet and needle plate.
Brief description of the drawings
Position view when Fig. 1 is presser foot lifter in the prior art between feeding tooth and needle plate.
Fig. 2 moves down the structural representation of structure and foot lifting mechanism for the feed mechanism in the application sewing machine.
Fig. 3 is that Fig. 2 omits the structural representation after casing.
Fig. 4 is Fig. 2 explosive view.
Fig. 5 moves down the structural representation of structure for feed mechanism in the application.
Fig. 6 is Fig. 5 explosive view.
Fig. 7 is the structural representation of foot lifting mechanism in the application.
Fig. 8 is Fig. 7 explosive view.
Fig. 9 and Figure 10 is the position view in the application during presser foot lifter between feeding tooth and needle plate.
Component label instructions
1 casing
2 presser foot lifter spanners
201 first swing pivot
3 eccentric shafts
31 shaft body portions
32 eccentric shaft portions
4 retainers
41 second swing pivot
42 chutes
43 main feed dog frames
44 differential cloth-feeding retainers
5 feeding teeth
51 active teeth
52 differential teeth
6 sliding blocks
7 back-up rings
8 pads
9 first suspension hooks
10 move down driving crank
11 crank reduction torsion springs
12 first axle sleeves
13 limit bases
14 stop screws
15 locking springs
16 presser feet arms
17 presser foot components
18 second suspension hooks
19 second axle sleeves
20 presser foot lifter levers
21 presser feet axles
211 presser feet eccentric shaft portions
22 presser foot lifter back-up rings
23 lever reduction torsion springs
24 driving sliding blocks
25 needle plates 25
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that structure, ratio, size that this specification accompanying drawing is painted etc., only to coordinate in disclosed in specification
Hold, so that those skilled in the art is understood with reading, be not limited to enforceable qualifications of the invention, therefore do not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size can be produced not influenceing the present invention
Under raw effect and the purpose that can reach, all should still it fall in the range of disclosed technology contents can be covered.Together
When, the term of cited such as " on ", " under " in this specification, "left", "right", " centre " and " one " is merely convenient to chat
State clearly, and be not used to limit enforceable scope of the invention, being altered or modified for its relativeness is changing technology without essence
Inside hold, when being also considered as enforceable category of the invention.
For ease of describing, in following examples, all directions are defined as follows：The moving direction of sewing when sewing machine is sewed
Be defined as front direction, therefore, the width of sewing machine case 1 is also fore-and-aft direction, and during sewing casing 1 rear surface face
To people, the preceding surface of casing 1 is back to people；The length direction of sewing machine case 1 is also left and right directions, and casing 1 is provided with eedle
Side be left side；The short transverse of sewing machine case 1 is also above-below direction.
The present invention provides a kind of feed mechanism controlled by foot lifting mechanism and moves down structure, realizes presser foot lifter action and feeding
Mechanism moves down the linkage of action, also as presser foot component 17 lift or put down action with feed mechanism in feeding tooth 5 move down or on
It is mobile make between linkage, more specifically, realize while presser foot lifter feeding tooth 5 be displaced downwardly to the upper surface of needle plate 25 lower section,
And feeding tooth 5 is moved up and exposed upwardly from the upper table of needle plate 25 while presser feet is put down.Specifically, such as Fig. 2 to Fig. 6 institutes
Show, the feed mechanism controlled by foot lifting mechanism moves down structure including the presser foot lifter spanner 2 in foot lifting mechanism, rotationally pacify
Eccentric shaft 3 in casing 1, the retainer 4 with the second swing pivot 41 and the feeding tooth 5 installed in the rear end of retainer 4.
Presser foot lifter spanner 2 extends along length direction of casing 1 or so, and the left end of presser foot lifter spanner 2 passes through axially extending axle before and after one
Position screw is articulated with casing 1, therefore the cooperation center of the left end of presser foot lifter spanner 2 and axial screw constitutes the first of presser foot lifter spanner 2
Swing pivot 201.Extend before and after width of the retainer 4 along casing 1, the chute 42 of extension before and after being offered in retainer 4.It is eccentric
Axle 3 is axially extending along the length direction of casing 1 or so, and eccentric shaft 3 has shaft body portion 31 and eccentric setting in shaft body portion 31
The eccentric shaft portion 32 of left end.Presser foot lifter spanner 2 is connected by the first transmission mechanism with the shaft body portion 31 of eccentric shaft 3, eccentric
The eccentric shaft portion 32 of axle 3 is installed in rotation in the chute 42 of retainer 4 and is slidably matched with chute 42.The present invention is also provided
A kind of sewing machine, as shown in Figures 2 to 4, including foot lifting mechanism and feed mechanism as described above move down structure；Presser foot lifter machine
Structure includes can be around the presser foot lifter spanner 2 of the first swing pivot 201 swing, front and rear extension presser feet arm 16 and after presser feet arm 16
There is pressure foot, presser foot lifter spanner 2 passes through the second transmission mechanism and the phase of presser feet arm 16 in the presser foot component 17 at end, presser foot component 17
Connection.
Before moving down the sewing machine of structure in sewing with the above-mentioned feed mechanism controlled by foot lifting mechanism, pass through lift
When presser foot device performs presser foot lifter action, the presser foot lifter spanner 2 in foot lifting mechanism swings an angle around the first swing pivot 201
Spend, then presser foot lifter spanner 2 drives presser feet arm 16 and presser foot component 17 to move up by the second transmission mechanism, perform presser foot lifter and move
Make；Meanwhile, presser foot lifter spanner 2 drives the rear end of retainer 4 to move down by the first transmission mechanism and eccentric shaft 3 so that installed in tooth
The feeding tooth 5 of the rear end of frame 4 is displaced downwardly to below the upper surface of needle plate 25, do not exposed upwardly from the upper table of needle plate 25, performs feeding
Mechanism moves down action, therefore presser foot lifter action and feed mechanism move down action to carry out simultaneously.Therefore, the application ensures that presser feet is lifted
Effective depth between presser feet and needle plate 25 afterwards so that sewing easily sends into sewing between presser feet and needle plate 25 before starting, and keeps away
Exempt from feeding action is produced before the 5 pairs of sewing of feeding tooth start influence and interference.
As shown in Figure 5 and Figure 6, the retainer 4 includes the main feed dog frame 43 being arranged side by side along the axial direction of eccentric shaft 3 and poor
Dynamic feed dog frame 44, main feed dog frame 43 is located at right side, and differential cloth-feeding retainer 44 is located at left side；Feeding tooth 5 includes being arranged on master
The active tooth 51 of the rear end of feed dog frame 43 and the differential tooth 52 installed in the rear end of differential cloth-feeding retainer 44.Main feed dog frame 43
The chute 42 is all offered with the front end of differential cloth-feeding retainer 44, and chute 42 the main feed dog frame 43 of insertion and differential is sent forward
The front end of cloth retainer 44.In addition, main feed dog frame 43 and differential cloth-feeding retainer 44 are all swung by the main shaft drives of sewing machine, such as scheme
Shown in 3 or Fig. 5, the driving chute of left and right insertion is all offered in main feed dog frame 43 and differential cloth-feeding retainer 44, the driving is slided
Driving sliding block 24 is installed, driving sliding block 24 is engaged with the eccentric part on machine spindle, realized by main shaft drives in groove
The swing of main feed dog frame 43 and differential cloth-feeding retainer 44；Therefore, driving sliding block 24 and the cooperation center of eccentric part on main shaft
Also the second swing pivot 41 of main feed dog frame 43 and differential cloth-feeding retainer 44 is constituted, therefore the second swing pivot 41 of retainer 4
Between chute 42 and feeding tooth 5.
In addition, main feed dog frame 43 is with eccentric shaft portion 32, differential cloth-feeding retainer 44 and the attachment structure in eccentric shaft portion 32：
As shown in fig. 6, the eccentric shaft portion 32 is connected with retainer 4 by sliding block 6, the sliding block 6 is rotationally enclosed on eccentric shaft portion
On 32 and be slidably mounted in chute 42, and sliding block 6 is contacted with the cell wall of chute 42 for face, thus sliding block 6 be square, in
Between have left and right insertion circle lead to.The eccentric shaft portion 32 of eccentric shaft 3 is in the right side of main feed dog frame 43 and differential cloth-feeding retainer
44 left side is respectively fixed with back-up ring 7 and pad 8, carries out axial limiting to main feed dog frame 43 and differential cloth-feeding retainer 44, prevents
Only axial displacement is produced between main feed dog frame 43 and differential cloth-feeding retainer 44 and eccentric shaft 3；And back-up ring 7 by one along eccentric shaft
The fixing screws radially extended in portion 32 are fixed on eccentric shaft portion 32, and pad 8 is by one along the axially extending of eccentric shaft portion 32
Fixing screws are fixed on eccentric shaft portion 32.
Further, as shown in Figure 5 and Figure 6, the first transmission mechanism that feed mechanism is moved down in structure includes the first suspension hook 9
Crank 10 is driven with moving down, the first suspension hook extends about 9, and the lower end of the first suspension hook 9 is connected with the hanging hole in presser foot lifter spanner 2
Connect, the upper end of the first suspension hook 9 is connected with moving down the hanging hole of driving crank 10 front end, the rear end for moving down driving crank 10 is fixed on
The shaft body portion 31 of eccentric shaft 3.Also include crank reduction torsion spring 11, the shaft body portion 31 of eccentric shaft 3 is rotatably supported at a left side
In first axle sleeve 12 of right extension, the first axle sleeve 12 is arranged in casing 1, crank reduction torsion spring 11 is enclosed on the first axle sleeve 12,
And the two ends of crank reduction torsion spring 11 are abutted against with moving down driving crank 10 and casing 1 respectively, and drive is moved down after being put down for presser feet
The reset of dynamic crank 10；Meanwhile, crank reduction torsion spring 11 can also be such that the first suspension hook 9 is abutted mutually with moving down driving crank 10, and two
Do not produce and rock between person.In addition, eccentric shaft 3 is installed with spacing back-up ring (not shown) at the first axle sleeve 12, lead to
The skew of eccentric shaft 3 vertically can be limited by crossing the spacing back-up ring.
Further, as shown in Figure 7 and Figure 8, the second transmission mechanism in foot lifting mechanism includes the second suspension hook 18, installed
The second axle sleeve 19 in casing 1, the presser foot lifter lever 20 being rotationally enclosed on the second axle sleeve 19, it is rotatably supported at
Presser feet axle 21 in two axle sleeves 19 and the presser foot lifter back-up ring 22 for being fixed on presser feet axle 21, the second suspension hook extend about 18, and second
The all left and right extensions of axle sleeve 19 and presser feet axle 21, and the left end of presser feet axle 21 has the presser feet eccentric shaft portion 211 of eccentric setting；Second
The lower end of suspension hook 18 is connected with the hanging hole in presser foot lifter spanner 2, upper end and the front end of presser foot lifter lever 20 of the second suspension hook 18
Hanging hole is connected, and rear end and the presser foot lifter back-up ring 22 of presser foot lifter lever 20 are abutted against, the presser feet eccentric shaft portion 211 and presser feet arm
16 front end is connected.Foot lifting mechanism also includes the lever reduction torsion spring 23 being enclosed on the second axle sleeve 19, lever reduction torsion spring
23 two ends are abutted against with presser foot lifter lever 20 and casing 1 respectively, the reset of lower presser foot lifter lever 20 after being put down for presser feet.Again
Person, the tie point of second suspension hook 18 and presser foot lifter lever 20 and the cooperation center of the axle sleeve 19 of presser foot lifter lever 20 and second it
Between form first arm of force of presser foot lifter lever 20, cooperation center and the presser foot lifter thick stick of the axle sleeve 19 of presser foot lifter lever 20 and second
Second arm of force of presser foot lifter lever 20 is formed between the tie point of bar 20 and presser foot lifter back-up ring 22, the length of first arm of force is big
In the length of second arm of force so that lever construction more optimizes, it is ensured that presser foot lifter lever 20 can drive presser foot lifter to keep off exactly
Circle 22 and presser feet axle 21 are rotated.
The following each part of the operation principle of sewing machine with said structure rotate clockwise or rotate counterclockwise regard
Figure angle is all using left view as visual angle：
As shown in Fig. 2 sewing machine sewing start before when needing presser foot lifter, then the presser foot lifter spanner 2 in foot lifting mechanism
Right-hand member around its left end the first swing pivot 201 to one angle of lower swing, presser foot lifter spanner 2 passes through under the first suspension hook 9 drives
The front end of driving crank 10 is moved to one angle of lower swing, so that eccentric shaft 3 turns over an angle counterclockwise, passes through bias
The driving retainer 4 of eccentric shaft portion 32 on axle 3 turns over an angle clockwise around its second swing pivot 41, therefore the rear end of retainer 4
Feeding tooth 5 moves down, is unlikely to expose upwardly from the upper end of needle plate 25, realizes moving down for feed mechanism；Meanwhile, presser foot lifter
Spanner 2 drives presser foot lifter lever 20 to turn over an angle, presser foot lifter lever 20 and presser foot lifter gear counterclockwise by the second suspension hook 18
Circle 22 abuts against and drives presser foot lifter back-up ring 22 to turn over an angle counterclockwise, so as to drive presser feet axle 21 also to turn over counterclockwise
One angle, drives the rear end of presser feet arm 16 and presser foot component 17 to move up together by the presser feet eccentric shaft portion 211 of eccentric setting,
Realize presser foot lifter.After sewing is sent between presser feet and needle plate 25, presser feet is put down, then crank reduction torsion spring 11 makes to move down driving song
Handle 10 resets, and lever reduction torsion spring 23 resets presser foot lifter lever 20, so as to drive presser foot lifter spanner 2 to reset.In addition, presser feet is lifted
Feeding tooth 5 should be met after rising does not expose upwardly from the upper table of needle plate 25, therefore the position relationship between feeding tooth 5 and needle plate 25 can
Think：1st, as shown in figure 9, upper surface and the upper surface flush of needle plate 25 of feeding tooth 5；2nd, the upper surface of feeding tooth 5 is located at pin
In alveolus in plate 25 for housing feeding tooth 5；3rd, as shown in Figure 10, the overall lower section for being displaced downwardly to needle plate 25 of feeding tooth 5, feeding
The upper surface of tooth 5 is less than the lower surface of needle plate 25.
In addition, above-mentioned sewing machine is preferably overedger, the structure category for how driving presser foot lifter spanner 2 to swing in presser foot lifter
In prior art, a kind of overedger lift disclosed in the Chinese utility model patent of Application No. 201320448549.8 is referred to
Presser foot device, therefore no longer narration in detail herein.
Further, as shown in Fig. 3 or Fig. 5, in addition to it is fixed on the limit base 13 of casing 1 and is threadedly connected to limit
The stop screw 14 of position seat 13, swaying direction of the stop screw 14 along presser foot lifter spanner 2 is located at the upper surface of presser foot lifter spanner 2
Surface side, and stop screw 14 lower end pass through limit base 13 after just to presser foot lifter spanner 2, by adjusting stop screw 14
The distance between the lower end of adjustable in length stop screw 14 and the upper end of presser foot lifter spanner 2 for screwing in limit base 13, and then to pressure
Pin puts down presser foot lifter spanner 2 in rear reseting procedure and is swung up forming spacing, motion row when limitation presser foot lifter spanner 2 resets
Journey, so as to limit swing angle when moving down driving crank 10, eccentric shaft 3, presser foot lifter lever 20 and the reset of presser foot lifter axle 21.It is excellent
It is cased with locking spring 15 on selection of land, the stop screw 14, the head of the two ends of locking spring 15 respectively with the upper end of stop screw 14
Portion and limit base 13 are abutted against.It due to the vibrations that machine is produced in the process of running, can offset up the position of stop screw 14,
Therefore such case can be avoided by increasing locking spring 15.
In summary, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe
Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (12)
1. a kind of feed mechanism controlled by foot lifting mechanism moves down the presser foot lifter spanner (2) in structure, including foot lifting mechanism,
The presser foot lifter spanner (2) has the first swing pivot (201), it is characterised in that：Also include being installed in rotation in casing (1)
Eccentric shaft (3), the retainer (4) with the second swing pivot (41) and the feeding tooth (5) installed in retainer (4) one end, institute
State and chute (42) is offered in retainer (4), the eccentric shaft (3) has shaft body portion (31) and eccentric setting in shaft body portion
(31) eccentric shaft portion (32), the shaft body portion (31) that the presser foot lifter spanner (2) passes through the first transmission mechanism and eccentric shaft (3)
It is connected, the eccentric shaft portion (32) of the eccentric shaft (3) is installed in rotation in the chute of retainer (4) (42) and and chute
(42) it is slidably matched；When presser foot lifter, the presser foot lifter spanner (2) swings around the first swing pivot (201) and passed by first
Motivation structure and eccentric shaft (3) driving retainer (4) are swung around the second swing pivot (41), make to be provided with feeding tooth (5) on retainer (4)
One end move down.
2. feed mechanism according to claim 1 moves down structure, it is characterised in that：The chute (42) is opened in retainer
(4) the other end, and retainer (4) the second swing pivot (41) be located between chute (42) and feeding tooth (5)；The eccentric shaft
Portion (32) is connected with retainer (4) by sliding block (6), and the sliding block (6) is rotationally enclosed in eccentric shaft portion (32) and can slided
It is arranged on dynamicly in chute (42), and sliding block (6) is contacted with the cell wall of chute (42) for face.
3. feed mechanism according to claim 1 or 2 moves down structure, it is characterised in that：The retainer (4) is included along bias
Main feed dog frame (43) and differential cloth-feeding retainer (44) that the axial direction of axle (3) is arranged side by side, the feeding tooth (5) include being arranged on
The active tooth (51) and the differential tooth (52) installed in differential cloth-feeding retainer (44) one end of main feed dog frame (43) one end.
4. feed mechanism according to claim 1 or 2 moves down structure, it is characterised in that：The eccentric shaft of the eccentric shaft (3)
Portion (32) is respectively fixed with back-up ring (7) and pad (8) in the both sides of retainer (4).
5. feed mechanism according to claim 1 moves down structure, it is characterised in that：First transmission mechanism includes first
Suspension hook (9) and driving crank (10) is moved down, one end of first suspension hook (9) is connected with presser foot lifter spanner (2), described first
The other end of suspension hook (9) is connected with moving down one end of driving crank (10), and the other end for moving down driving crank (10) is consolidated
Due to the shaft body portion (31) of eccentric shaft (3).
6. feed mechanism according to claim 5 moves down structure, it is characterised in that：Also include crank reduction torsion spring (11),
The shaft body portion (31) of the eccentric shaft (3) is rotatably supported in the first axle sleeve (12), and the first axle sleeve (12) is arranged on machine
In shell (1), the crank reduction torsion spring (11) be enclosed on the first axle sleeve (12) and crank reduction torsion spring (11) two ends respectively with
Move down driving crank (10) and casing (1) is abutted against.
7. feed mechanism according to claim 1 moves down structure, it is characterised in that：Also include the limit for being fixed on casing (1)
Position seat (13) and the stop screws (14) of limit base (13) is threadedly connected to, the stop screw (14) is along presser foot lifter spanner
(2) swaying direction is located at the side of presser foot lifter spanner (2), and stop screw (14) end pass through it is just right after limit base (13)
Presser foot lifter spanner (2).
8. feed mechanism according to claim 7 moves down structure, it is characterised in that：It is cased with preventing on the stop screw (14)
Loose spring (15), the two ends of locking spring (15) are abutted against with the head of stop screw (14) and limit base (13) respectively.
9. a kind of sewing machine, including foot lifting mechanism, the foot lifting mechanism include swingable presser foot lifter spanner (2), presser feet arm
(16) and the presser foot component (17) installed in presser feet arm (16) one end, the presser foot lifter spanner (2) by the second transmission mechanism with
Presser feet arm (16) is connected, it is characterised in that：Also include the feed mechanism described in claim any one of 1-8 and move down structure；When
Presser foot lifter spanner (2) around the first swing pivot (201) swing when, presser foot lifter spanner (2) passes through the first transmission mechanism and eccentric shaft
(3) one end that feeding tooth (5) is provided with driving retainer (4) is moved down, and presser foot lifter spanner (2) is driven by the second transmission mechanism and pressed
Pin arm (16) and presser foot component (17) are moved up.
10. sewing machine according to claim 9, it is characterised in that：Second transmission mechanism include the second suspension hook (18),
The second axle sleeve (19) in casing (1), the presser foot lifter lever (20) being rotationally enclosed on the second axle sleeve (19), it can turn
The presser feet axle (21) that is supported on dynamicly in the second axle sleeve (19) and the presser foot lifter back-up ring (22) for being fixed on presser feet axle (21), institute
Stating one end of presser feet axle (21) has the presser feet eccentric shaft portion (211) of eccentric setting, one end of second suspension hook (18) and lift
Presser feet spanner (2) is connected, and the other end of second suspension hook (18) is connected with one end of presser foot lifter lever (20), the lift
The other end of presser feet lever (20) is abutted against with presser foot lifter back-up ring (22), the presser feet eccentric shaft portion (211) and presser feet arm (16)
The other end be connected.
11. sewing machine according to claim 10, it is characterised in that：The foot lifting mechanism also includes being enclosed on the second axle sleeve
(19) the lever reduction torsion spring (23) on, the two ends of the lever reduction torsion spring (23) respectively with presser foot lifter lever (20) and casing
(1) abut against.
12. sewing machine according to claim 10, it is characterised in that：Second suspension hook (18) and presser foot lifter lever (20)
Tie point and presser foot lifter lever (20) and the second axle sleeve (19) cooperation center between formed presser foot lifter lever (20) first
The cooperation center of the arm of force, the presser foot lifter lever (20) and the second axle sleeve (19) and presser foot lifter lever (20) and presser foot lifter back-up ring
(22) second arm of force of presser foot lifter lever (20) is formed between tie point, the length of first arm of force is more than second arm of force
Length.
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| CN201710402957.2A CN106988030B (en) | 2017-06-01 | 2017-06-01 | It is a kind of by foot lifting mechanism control feeding mechanism move down structure and sewing machine |
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|---|---|---|---|
| CN201710402957.2A CN106988030B (en) | 2017-06-01 | 2017-06-01 | It is a kind of by foot lifting mechanism control feeding mechanism move down structure and sewing machine |
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| Publication Number | Publication Date |
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| CN106988030A true CN106988030A (en) | 2017-07-28 |
| CN106988030B CN106988030B (en) | 2019-07-09 |
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| CN201710402957.2A Active CN106988030B (en) | 2017-06-01 | 2017-06-01 | It is a kind of by foot lifting mechanism control feeding mechanism move down structure and sewing machine |
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| CN109267246A (en) * | 2018-11-15 | 2019-01-25 | 杰克缝纫机股份有限公司 | A kind of sewing machine feed dog control method, system and sewing machine |
| CN109355814A (en) * | 2018-11-19 | 2019-02-19 | 杰克缝纫机股份有限公司 | Feed dog frame adjusting method |
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| CN109371577A (en) * | 2018-11-19 | 2019-02-22 | 杰克缝纫机股份有限公司 | Feed dog frame regulating mechanism and the overedger for using the mechanism |
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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. |