CN108374245A - The wire-clamping device and its operational method of sewing machine - Google Patents
The wire-clamping device and its operational method of sewing machine Download PDFInfo
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- CN108374245A CN108374245A CN201810436759.2A CN201810436759A CN108374245A CN 108374245 A CN108374245 A CN 108374245A CN 201810436759 A CN201810436759 A CN 201810436759A CN 108374245 A CN108374245 A CN 108374245A
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Abstract
The present invention provides a kind of wire-clamping device and its operational method of sewing machine, which includes head, eedle, rotating shuttle, the first tension disk being set on head, the second tension disk and thread take-up tension lever；Eedle is equipped with the pinprick that is passed through for suture, and suture sequentially passes through the pinprick of the second tension disk, thread take-up tension lever, the first tension disk, eedle, and when the downward prickseam material of the eedle, second tension disk unclamps suture；After suture is by rotary shuttle hook line below sewing, when thread take-up tension lever moves upwards take-up, first tension disk clamps suture.The wire-clamping device device and its operational method can precisely be adjusted clamp and loose ends sequential, the compensation rate controlled risk, and broken needle or with baseline when avoiding sewing operation ensures the beauty of sewed product.
Description
It is June 24 in 2015 that the application, which is entitled " sewing machine remove Bird's Nest device and application method ", domestic applications day,
Day, national application number be 2015103494116 application for a patent for invention divisional application.
Technical field
The present invention relates to a kind of sewing machines to remove Bird's Nest device.
The invention further relates to the application methods that a kind of sewing machine removes Bird's Nest device.
Background technology
Sewing machine sew cloth when, start to need at the pinprick of eedle when sewing there are the end of a thread of certain length, to
Ensure that the end of a thread will not be deviate from from pinprick when seam, but can have been stayed in the end of a thread of the certain length on the pinprick of eedle when playing seam
The sewing initial position of sewing, influences the beauty of sewing.
Current processing mode is mainly the following.
A kind of processing mode is manually to hold the end of a thread when starting sewing, so that the end of a thread is stayed in above sewing, in sewer
After work, manually carry out repairing the end of a thread processing.
Another processing mode is lifted the end of a thread when upper primary sewing terminates using group line device, rear primary
It when sewing, is acted by sewing machine thorn cloth hook line, takes the end of a thread to sewing in the following, ensureing the positive beauty of sewing.
There is a kind of more universal mode to be at present, a kind of electronics tension disk is set in head passing channel, when playing seam
Suture is clamped certain time by the action of electronics tension disk, and hanging the end of a thread is made to be brought to sewing in the following, and passing through folder when playing seam
Firmly suture makes to pass through back when seam the line amount for dragging the end of a thread on eedle for line, the final length for realizing shortening the end of a thread below sewing
Degree.
Latter two handles the mode of the end of a thread, due to sewing machine quick acting, under the end of a thread being deposited in sewing when playing seam
Face forms a nest like ball of string, is commonly called as " Bird's Nest " phenomenon, and especially when playing the automatic reinforcing mode of seam, " Bird's Nest " for playing seam position is existing
As particularly evident.Although both modes solve the problems, such as that there are the end of a thread above upper thread, but the end of a thread is transferred to sewing
In the following, forming Bird's Nest ball of string problem.
There is one kind to clamp the end of a thread by sliding wire-clamping device in industry at present, blade is set on presser feet, rises logical when seam
Pullling for wire-binding device and sewing is crossed, makes to be cut off on the top presser feet edge of a knife of the end of a thread, solve the problems, such as " Bird's Nest ".But this mode by
It is jammed in the end of a thread, when playing the first needle of seam, upper thread, which is tightened up, to take baseline the end of a thread above sewing to, generated band baseline and asked
Topic.A kind of method for solving the problems, such as this is, by a set of throwing device, the upper thread in head drawing lines to be beaten after clamping the end of a thread
Pine has made have enough upper thread line amounts when seam, has avoided band baseline problem.But the routing mode routing amount in this method is unstable, often
Can be excessive, it cause the end of a thread to receive not tight, and cause secant time delay, cut off rear the end of a thread and remain long, while fixed journey system
Throwing device cannot meet needs different the rising of line amount to stitch the unstable problem of take-up because of needle gage difference.In addition, due to empty at head
Between it is limited, the wire-clamping device of sliding needs to stop pin position with presser feet and eedle to ensure closer distance, can influence normal sewing operation
When cloth pass through, lead to the problem of dossal；The end of a thread, which is hooked, to be moved in thread tension disc and sliding rail, when drag hook leaves thread tension disc,
The end of a thread is difficult to deviate under thread tension disc, generates accumulation；In order to avoid blade distance sewing side just destroys pressing sole crossed beam trunking, blade
The line normally sewed is sliced off, needs to make blade setting to leave the pinprick line certain distance of sewing, when causing secant in this way on cloth
The longer the end of a thread of residual.
Therefore, in view of foregoing description, existing device all can not preferably solve the end of a thread in sewing process and be easy to be deposited in
Sewing is in the following, the problem of forming a nest like ball of string.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of sewing machines to remove Bird's Nest device
And application method, it is easy to be deposited in sewing in the following, forming Bird's Nest for solving the end of a thread in sewing machine sewing process in the prior art
The problem of shape ball of string.
In order to achieve the above objects and other related objects, the present invention provides a kind of sewing machine removal Bird's Nest device, sewing
Machine includes head and the needle plate below head, which includes drag hook, clamp, the machine being located at below head
Needle and pressure foot, drag hook are connect by shaft with head, and eedle is equipped with the pinprick passed through for suture, and pressure foot is located at needle plate
On, pressure foot is equipped with crossed beam trunking corresponding with eedle, and crossed beam trunking extends along the direction that sewing moves, and the bottom of crossed beam trunking is equipped with
Thread cutter；Shaft drives the axis of drag hook around the shaft to be rotated between clamp below eedle under the driving of driving mechanism,
When drag hook is located at below eedle, the suture below the pinprick of eedle is hooked, when drag hook turns to the position coordinated with clamp,
Drag hook clamps suture with clamp.
Preferably, clamp is fixedly connected by connecting plate with head.It is further preferred, pressure is further fixed on connecting plate
Leaf spring, hold-down plate spring are located at one side of the clamp backwards to connecting plate, and hold-down plate spring applies clamp the pressure to connecting plate direction.More
Further preferred, connecting plate is fixedly connected with hold-down plate spring, clamp by pressing plate fixing bolt, between clamp and connecting plate
Equipped with adjustment gap；Pressing plate adjuster is additionally provided on connecting plate, pressing plate adjuster includes adjuster head and threaded joints, is adjusted
Section device head is located at one side of the hold-down plate spring backwards to clamp, after threaded joints sequentially pass through hold-down plate spring, clamp, adjustment gap
It is threadedly coupled with connecting plate.
Preferably, the opening of the crossed beam trunking of pressure foot, bottom are located on the center line of pressure foot, and the bottom of crossed beam trunking is divided into
Off-line portion and secant portion, off-line portion extend along the center line of pressure foot, and the initiating terminal in secant portion is located on the center line of pressure foot,
Secant portion is bypassed from the side in off-line portion, and the arc-shaped center line for extending up to pressure foot, thread cutter is located at the bottom in secant portion.
Preferably, the driving mechanism of shaft includes holder, crank, connecting rod and pull-core, and holder is fixed with head, shaft
It on holder and can be rotated about axis, shaft is also fixedly connected with one end of crank, crank one end and connecting rod far from shaft
One end it is hinged, the articulated shaft of connecting rod is parallel with the axis of shaft, and the other end of connecting rod is connect with pull-core, and pull-core leads to
Cross magnet control actuation；When electromagnet is powered, pull-core is attracted, and connecting rod drives drag hook to eedle by crank, shaft
Direction rotates.
Preferably, the first tension disk, the second tension disk, thread take-up tension lever are additionally provided on head, suture sequentially passes through the second clamp
The pinprick of device, thread take-up tension lever, the first tension disk, eedle.Further preferred, the first tension disk includes electromagnet base and clamping plate, seam
Line is passed through between electromagnet base, clamping plate, and when electromagnet base is powered, electromagnet base, clamping plate are attracted, and clamp suture.Another kind into
One step it is preferred, the second tension disk includes thread tension disc, and thread tension disc is circumferentially arranged with the clamp slot of variable-width, one end of thread tension disc
It is threadedly coupled with clamp adjustment bolt, compressed spring is cased in clamp adjustment bolt, the other end and loose ends mandril of thread tension disc are solid
Fixed connection, end of the loose ends mandril far from thread tension disc are corresponding with loose ends electromagnet；Loose ends electromagnet is powered, the end of loose ends mandril
Portion and loose ends electromagnetic actuation, the clamp slot of thread tension disc are widened.
In order to achieve the above objects and other related objects, the present invention also provides a kind of above-mentioned sewing machines to remove Bird's Nest device
Application method includes the following steps：
1) last sewing terminates after completing trimming, and driving mechanism is powered, and shaft drives drawing under the driving of driving mechanism
Hook turns to the lower section of eedle, and the end of a thread of the pinprick of eedle suture below is hooked；
2) driving mechanism powers off, and shaft drives drag hook to reset, and the end of a thread that drag hook hooks is sandwiched between drag hook and clamp；
3) start sewing, eedle starts to sew, and suture is sewn on sewing, and the end of a thread is left on sewing；
4) sewing moves in sewing process to the bottom direction of the crossed beam trunking of pressure foot, when the end of a thread being sewn on sewing
When encountering thread cutter, the end of a thread is cut off by thread cutter, and the end of a thread is left between drag hook and clamp；
5) when this sewing terminates, after completing trimming, drive system energized, shaft drives drawing under the driving of driving mechanism
Hook rotates, and is clipped in drag hook originally and is fallen with the end of a thread in clamp.
Preferably, the first tension disk, the second tension disk, thread take-up tension lever are additionally provided on head, suture sequentially passes through the second clamp
The pinprick of device, thread take-up tension lever, the first tension disk, eedle；Step 3) includes the following steps：
1. when the downward prickseam material of eedle, the second tension disk unclamps suture；
2. after suture is by rotary shuttle hook line below sewing, when thread take-up tension lever moves upwards take-up, the first tension disk folder
Calking line.
As described above, sewing machine removal Bird's Nest device of the present invention and application method, have the advantages that：
The sewing machine removes Bird's Nest device and application method, using arc swing hook wire clamp line apparatus, by eedle after trimming
The end of a thread is clamped, by the cooperation of the clamp loose ends time of two tension disks when playing seam next time, for start sewing provide it is steady enough
Fixed line amount makes quickly to have tightened seam upper thread without baseline, and the end of a thread clamped is close to the position of sewing pin hole
It is cut off, residual the end of a thread is short, thoroughly solves the problems, such as Bird's Nest the end of a thread.
Description of the drawings
Fig. 1 is shown as the structural schematic diagram of sewing machine removal Bird's Nest device of the present invention.
The structural representation when drag hook that Fig. 2 a are shown as sewing machine removal Bird's Nest device shown in FIG. 1 is located at below eedle
Figure.
Fig. 2 b are shown as the close-up schematic view of sewing machine removal Bird's Nest device shown in Fig. 2 a.
Fig. 3 is shown as the rearview of sewing machine removal Bird's Nest device shown in FIG. 1.
Fig. 4 is shown as the partial top view of sewing machine removal Bird's Nest device shown in FIG. 1.
Fig. 5 a are shown as suture and eedle, drag hook, clamp in the sewing process of sewing machine removal Bird's Nest device shown in FIG. 1
The relative position relation figure of plate, pressure foot.
Fig. 5 b are shown as the vertical view of sewing machine removal Bird's Nest device shown in Fig. 5 a.
Fig. 5 c are shown as the sectional view along A-A of sewing machine removal Bird's Nest device shown in Fig. 5 b.
Fig. 5 d are shown as the partial enlarged view of sewing machine removal Bird's Nest device shown in Fig. 5 b.
Fig. 6 is shown as the structure of the first embodiment of the driving mechanism of sewing machine removal Bird's Nest device shown in FIG. 1
Schematic diagram.
Fig. 7 is shown as the structure of second of embodiment of the driving mechanism of sewing machine removal Bird's Nest device shown in FIG. 1
Schematic diagram.
Fig. 8 a are shown as the structural schematic diagram of the first tension disk of sewing machine removal Bird's Nest device shown in FIG. 1.
Fig. 8 b are shown as the schematic diagram in A-A direction of the first tension disk of sewing machine removal Bird's Nest device shown in Fig. 8 a.
When the loose ends electromagnet that Fig. 9 a are shown as the second tension disk of sewing machine removal Bird's Nest device shown in FIG. 1 powers off
Schematic diagram.
When the loose ends electromagnet that Fig. 9 b are shown as the second tension disk of sewing machine removal Bird's Nest device shown in Fig. 9 a is powered
Schematic diagram.
Component label instructions
1 head
2 needle plates
3 drag hooks
301 drag hook gib heads
4 clamps
5 eedles
501 pinpricks
6 pressure foots
601 crossed beam trunkings
602 crossed beam trunkings are open
603 crossed beam trunking bottoms
604 off-line portions
605 secant portions
7 shafts
8 sutures
801 the end of a thread
9 thread cutters
The 901 thread cutter edges of a knife
10 driving mechanisms
101 holders
102 cranks
103 connecting rods
104 levers
105 pull-cores
106 electromagnet
11 connecting plates
111 connecting plate elongated slots
12 hold-down plate springs
13 pressing plate fixing bolts
14 adjustment gaps
15 pressing plate adjusters
151 adjuster heads
152 threaded joints
16 first tension disks
161 electromagnet bases
162 clamping plates
17 second tension disks
171 thread tension discs
172 clamp slots
173 clamp adjustment bolts
174 compressed springs
175 loose ends mandrils
176 loose ends electromagnet
177 adjustment springs
Specific implementation mode
Illustrate that embodiments of the present invention, those skilled in the art can be by this explanations by particular specific embodiment below
Content disclosed by book understands other advantages and effect of the present invention easily.
It please refers to Fig.1 to shown in Fig. 9 b.It should be clear that structure, ratio, size etc. depicted in this specification institute accompanying drawings,
Only to coordinate the revealed content of specification, so that those skilled in the art understands and reads, it is not limited to this hair
Bright enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size
Adjustment should all still be fallen disclosed in the case where not influencing the effect of present invention can be generated and the purpose that can reach
Technology contents can cover in the range of.Meanwhile in this specification it is cited as "upper", "lower", "left", "right", " in
Between " and " one " etc. term, be merely convenient to being illustrated for narration, rather than to limit the scope of the invention, it is opposite
Relationship is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the present invention.
As shown in Figures 1 to 4, the present invention provides a kind of sewing machine removal Bird's Nest device, and sewing machine includes head 1 and is located at
The needle plate 2 of 1 lower section of head, the removal Bird's Nest device include drag hook 3, clamp 4, eedle 5 and the pressure foot for being located at 1 lower section of head
6, drag hook 3 is connect by shaft 7 with head 1, and eedle 5 is equipped with the pinprick 501 passed through for suture 8, and pressure foot 6 is located at needle plate 2
On, pressure foot 6 is equipped with crossed beam trunking 601 corresponding with eedle 5, and crossed beam trunking 601 extends along the direction that sewing moves, crossed beam trunking
601 bottom 603 is equipped with thread cutter 9；Shaft 7 driven under the driving of driving mechanism 10 drag hook 3 around the shaft 7 axis in eedle
It rotates between 5 lower sections and clamp 4, when drag hook 3 is located at 5 lower section of eedle, the suture 8 of 501 lower section of pinprick of eedle 5 is hooked,
When drag hook 3 turns to the position coordinated with clamp 4, drag hook 3 clamps suture 8 with clamp 4.
Suture 8 passes through the pinprick 501 of eedle 5, and the suture 8 for being located at 501 lower section of pinprick of eedle 5 is the end of a thread 801.It is sewing
Before startup, driving mechanism 10 is powered, and shaft 7 drives drag hook 3 to turn to the lower section of eedle 5 under the driving of driving mechanism 10, draws
The gib head 301 of hook 3 hooks 501 the end of a thread 801 below of pinprick of eedle 5；Driving mechanism 10 powers off, and shaft 7 drives drag hook 3 multiple
Position, the end of a thread 801 that drag hook 3 hooks are sandwiched between drag hook 3 and clamp 4.Start sewing, eedle 5 starts to sew, 8 quilt of suture
It is sewn on sewing, the end of a thread 801 is left on sewing；Due to sewing in sewing process to the bottom of the crossed beam trunking 601 of pressure foot 6
603 directions are moved, and when the end of a thread 801 being sewn on sewing encounters thread cutter 9, the end of a thread 801 is cut off by thread cutter 9, the end of a thread 801
It is left between drag hook 3 and clamp 4；When this sewing terminates, after completing trimming, drive system 10 is powered, and shaft 7 is driving
Drag hook 3 is driven to rotate under the driving of mechanism 10, the end of a thread 801 being clipped in originally between drag hook 3 and clamp 4 falls, and drag hook 3 is by position
New the end of a thread 801 in 501 lower section of pinprick of eedle 5 hooks, and waits for the startup sewed next time.
As shown in Figure 2 b, clamp 4 is fixedly connected by connecting plate 11 with head 1.
Hold-down plate spring 12 is further fixed on connecting plate 11, hold-down plate spring 12 is located at one side of the clamp 4 backwards to connecting plate 11, pressing plate
Spring 12 applies clamp 4 pressure to 11 direction of connecting plate.Pressure is applied to clamp 4 by using hold-down plate spring 12, makes folder
Have certain retentivity between line plate 4 and drag hook 3, the retentivity can guarantee the end of a thread 801 by clamp 4, drag hook 3 clamp without
It can fall.
A kind of concrete structure that connecting plate 11 is connect with hold-down plate spring 12, clamp 4 is as shown in Figure 2.Connecting plate 11 and pressing plate
Spring 12, clamp 4 are fixedly connected by pressing plate fixing bolt 13, and adjustment gap 14 is equipped between clamp 4 and connecting plate 11；Even
Pressing plate adjuster 15 is additionally provided on fishplate bar 11, pressing plate adjuster 15 includes adjuster head 151 and threaded joints 152, is adjusted
Device head 151 be located at hold-down plate spring 12 backwards to clamp 4 one side, threaded joints 152 sequentially pass through hold-down plate spring 12, clamp 4,
Adjustment is threadedly coupled behind gap 14 with connecting plate 11.By rotary regulator head 151, the size in adjustment gap 14 is adjusted, i.e.,
Pressure of the hold-down plate spring 12 to clamp 4 is can adjust, to adjust the retentivity between clamp 4 and drag hook 3.
As shown in Fig. 5 a to Fig. 5 d, the opening 602 of the crossed beam trunking 601 of pressure foot 6, bottom 603 are located at the center of pressure foot 6
On line, the bottom 603 of crossed beam trunking 601 is divided for off-line portion 604 and secant portion 605, and off-line portion 604 prolongs along the center line of pressure foot 6
It stretches, the initiating terminal in secant portion 605 is located on the center line of pressure foot 6, and secant portion 605 is bypassed from the side in off-line portion 604, is in arc
Shape extends up to the center line of pressure foot 6, and thread cutter 9 is located at the bottom in secant portion 605, and the edge of a knife 901 of thread cutter 9 is towards line excessively
The direction of the opening 602 of slot 601.
Due to being equipped with off-line portion 604 close to the one side of needle plate 2, and secant portion 605 bypasses off-line portion 604, is sewn in sewing
Suture on sewing is placed in off-line portion 604 under normal conditions, without to the suture quilt in secant portion 605, avoided in sewing
The thread cutter 9 being arranged in secant portion 605 rubs disconnected；And the bottom in secant portion 605 is located on the center line of pressure foot 6, makes secant
The distance between knife 9 and the stitching of sewing are most short so that the end of a thread 801 is cut off stitching of the place close to sewing, is ensured residual on sewing
The end of a thread stayed is shorter.
There are many specific implementation modes for the driving mechanism 10 of shaft 7.Driving mechanism 10 includes and 1 fixed holder of head
101, shaft 7 is located on holder 101 and can be rotated about axis, and when driving mechanism 10 is powered, shaft 7 drives drag hook 3 to eedle 5
Direction rotation, 501 the end of a thread 801 below of pinprick of eedle 5 is hooked, and driving mechanism 10 power off when, shaft 7 reset, draw
The end of a thread 801 that hook 3 hooks is sandwiched between drag hook 3 and clamp 4, specific implementation mode such as Fig. 6 and Fig. 7 institutes of driving mechanism 10
Show.
If 6 to shown in Fig. 7, the driving mechanism 10 of shaft 7 includes holder 101, crank 102, connecting rod 103 and pull-core
105, holder 101 and head 1 are fixed, and shaft 7 is located on holder 101 and can be rotated about axis, shaft 7 also with crank 102 one
End is fixedly connected, and the one end of crank 102 far from shaft 7 and one end of connecting rod 103 are hinged, articulated shaft and the shaft 7 of connecting rod 103
Axis is parallel, and the other end of connecting rod 103 is connect with pull-core 105, and pull-core 105 is controlled by electromagnet 106 and is attracted；Electricity
When magnet 106 is powered, pull-core 105 is attracted, and connecting rod 103 drives drag hook 3 to the direction of eedle 5 by crank 102, shaft 7
Rotation.Wherein, there are two types of the connection types of connecting rod 103 and pull-core 105, the first connection type is as shown in fig. 6, connecting rod
103 are connected with pull-core 105 by lever 104, and the fulcrum of lever 104 is fixedly connected with holder 101；Second of connection side
For formula as shown in fig. 7, connecting rod 103 is directly hinged with pull-core 105, articulated shaft is parallel with the axis of shaft 7.
Cylinder can be used in electromagnet 106 in above-mentioned driving mechanism 10 or motor replaces.
As shown in Figure 6 to 7, connecting plate 11 could be secured on holder 101, and connecting plate 11 is set with 101 bearing of holder
There is elongated slot 111, by passing through elongated slot 111 with 101 fixed bolt of holder come fixed connecting plate 11 and holder 101.Due to bolt
There is certain activity space in elongated slot 111, therefore connecting plate 11 also can adjust the relative position with holder 101, so as to adjust
It is fixed on the relative position of the clamp 4 of connecting plate 11.
As shown in Fig. 1 and Fig. 8 a to Fig. 9 b, the first tension disk 16, the second tension disk 17, thread take-up tension lever are additionally provided on head 1,
Suture 8 sequentially passes through the pinprick 501 of the second tension disk 17, thread take-up tension lever, the first tension disk 16, eedle 5.
As shown in Fig. 8 a to Fig. 8 b, the first tension disk 16 includes electromagnet base 161 and clamping plate 162, and suture 8 is from electromagnet base
161, it is passed through between clamping plate 162.When electromagnet base 161 is powered, electromagnet base 161, clamping plate 162 are attracted, and clamp suture 8；Electromagnetism
When iron seat 161 powers off, electromagnet base 161, clamping plate 162 unclamp suture 8.
As shown in Fig. 9 a to Fig. 9 b, the second tension disk 17 includes thread tension disc 171, and thread tension disc 171 can circumferentially arranged with width
One end of the clamp slot 172 of change, thread tension disc 171 is threadedly coupled with clamp adjustment bolt 173, is cased in clamp adjustment bolt 173
The other end of compressed spring 174, thread tension disc 171 is fixedly connected with loose ends mandril 175, and loose ends mandril 175 is far from thread tension disc 171
End is corresponding with loose ends electromagnet 176；Loose ends electromagnet 176 is powered, end and the loose ends electromagnet 176 of loose ends mandril 175
It is attracted, the clamp slot 172 of thread tension disc 171 is widened.Adjustment spring 177 is also cased on loose ends mandril 175, the adjustment spring 177
One end be against on thread tension disc 171, the other end is against on loose ends mandril 175.
As illustrated in fig. 9, it is the state of the power-off of loose ends electromagnet 176, clamp slot 172 clamps suture 8 at this time；Such as Fig. 9 b
It is shown, for the state that loose ends electromagnet 176 is powered, the at this time end of loose ends mandril 175 and the actuation of loose ends electromagnet 176, clamp
Slot 172 is widened, and suture 8 non-resistance can slide in clamp slot 172.
Above-mentioned loose ends electromagnet 176, the energization of electromagnet base 161 and power-off time point are according to different operations by automatically controlled mould
Formula carries out intelligent switching.
When sewing beginning, the end of a thread 801 continues to be jammed, and with 5 downward thorn cloth of eedle, loose ends electromagnet 176 is powered, folder
172 loose ends of wire casing ensures machine stitching downwards for line non-resistance；When suture passes through rotary shuttle hook line, thread take-up tension lever moves upwards take-up
When to close to peak, since the end of a thread 801 is sandwiched in top when playing seam, and a wire loop of sewing out consumes a part of line amount,
If continuing take-up at this time, it will produce and the wire loop formed before is pulled out into sewing, the phenomenon that baseline the end of a thread is taken out of, in order to avoid
There is this phenomenon, the first tension disk 16 powers at this time, clamps the suture 8 between thread take-up tension lever and eedle 5 so that thread take-up tension lever continues
Will not be from the side take-up of eedle 5 when rising, but line can be taken out from the side of the second tension disk 17, can both it ensure so not
It takes wire loop and baseline out of sewing, and can ensure not pulling apart suture 8 when take-up.It is protected by the time match of above-mentioned loose ends clamp
A seam has been demonstrate,proved without baseline, has beautified stitching, stabilizes the performance for removing Bird's Nest device.
The application method of above-mentioned sewing machine removal Bird's Nest device, mainly includes the following steps that：
1) last sewing terminates after completing trimming, and driving mechanism 10 is powered, driving lower band of the shaft 7 in driving mechanism 10
Dynamic drag hook 3 turns to the lower section of eedle 5, and the end of a thread 801 of 501 suture 8 below of pinprick of eedle 5 is hooked；
2) driving mechanism 10 powers off, and shaft 7 drives drag hook 3 to reset, and the end of a thread 801 that drag hook 3 hooks is sandwiched in drag hook 3 and folder
Between line plate 4；
3) start sewing, eedle 5 starts to sew, and suture 8 is sewn on sewing, and the end of a thread 801 is left on sewing；Wherein,
When 5 downward prickseam material of eedle, the second tension disk 17 unclamps suture 8；After suture 8 is by rotary shuttle hook line below sewing, choose
When line bar moves upwards take-up, the first tension disk 16 clamps suture 8；
4) sewing moves in sewing process to 603 direction of bottom of the crossed beam trunking 601 of pressure foot 6, when being sewn to sewing
On the end of a thread 801 when encountering thread cutter 9, the end of a thread 801 is cut off by thread cutter 9, the end of a thread 801 be left on drag hook 3 and clamp 4 it
Between；
5) when this sewing terminates, after completing trimming, drive system 10 is powered, and shaft 7 is under the driving of driving mechanism 10
It drives drag hook 3 to rotate, is clipped in drag hook 3 originally and is fallen with the end of a thread 801 in clamp 4.
Drag hook 3, clamp 4 clamp of the sewing machine removal Bird's Nest device of the present invention by arc swing, coordinate optimization design
The pressure foot 6 with thread cutter 9 rise seam when secant；The setting of the drag hook 3, clamp 4 of arc swing thoroughly solves sewing
The problem of operating space, and unidirectional clamping-line structure is used, it realizes that the end of a thread 801 is quickly deviate from from thread tension disc 4, avoids the end of a thread heap
Product；The secant portion 605 of pressure foot 6 is designed as oblique bracing wire road, protects the off-line portion 604 of pressure foot 6, while thread cutter 9 leans on
The pin hole line of nearly sewing so that the edge of a knife is closer apart from pin hole line when 9 secant of thread cutter, and residual the end of a thread is shorter on sewing, has simultaneously
Effect controls hook line range；By the first tension disk 16 on the passing channel of head 1,17 clamp of the second tension disk, loose ends when
Between cooperation, solve the problems, such as because the end of a thread is jammed generate rise seamed belt baseline, eliminate throwing device, and stabilized seam
For line amount, avoid needs line amount different because routing amount is unstable and the throwing device of fixed journey system cannot meet because of needle gage difference
What is generated plays the unstable problem of seam take-up.
In conclusion sewing machine of the present invention removal Bird's Nest device and application method, using arc swing hook wire clamp line apparatus,
Eedle the end of a thread after trimming is clamped, by the cooperation of the clamp loose ends time of two tension disks when playing seam next time, to start to stitch
It threads and sufficiently stable line amount is provided, make quickly to have tightened seam upper thread without baseline, the end of a thread clamped is close to seam
The position in material pin hole is cut off, and residual the end of a thread is short, thoroughly solves the problems, such as Bird's Nest the end of a thread.So the present invention effectively overcomes
Various shortcoming in the prior art and have high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology can all carry out modifications and changes to above-described embodiment without violating the spirit and scope of the present invention.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should by the present invention claim be covered.
Claims (6)
1. a kind of wire-clamping device of sewing machine, it is characterised in that：Including head (1), eedle (5), rotating shuttle, it is set to head (1)
On the first tension disk (16), the second tension disk (17) and thread take-up tension lever；Eedle (5) is equipped with the pinprick passed through for seam (8) line
(501), suture (8) sequentially passes through the pinprick (501) of the second tension disk (17), thread take-up tension lever, the first tension disk (16), eedle (5),
The eedle (5) downwards prickseam material when, second tension disk (17) unclamps suture (8)；When suture (8) is by below sewing
Rotary shuttle hook line after, when thread take-up tension lever moves upwards take-up, first tension disk (16) clamps suture (8).
2. the wire-clamping device of sewing machine according to claim 1, it is characterised in that：First tension disk (16) includes electricity
Magnetic receiver (161) and clamping plate (162), the suture (8) passes through from the electromagnet base (161), clamping plate between (162), described
When electromagnet base (161) is powered, the electromagnet base (161), clamping plate (162) are attracted, and clamp suture (8), electromagnet base (161)
When power-off, electromagnet base (161), clamping plate (162) unclamp suture (8).
3. the wire-clamping device of sewing machine according to claim 1, it is characterised in that：Second tension disk (17) includes folder
Line piece (171), the thread tension disc (171) circumferentially arranged with variable-width clamp slot (172), the one of the thread tension disc (171)
End is threadedly coupled with clamp adjustment bolt (173), and compressed spring (174), the folder are cased on the clamp adjustment bolt (173)
The other end of line piece (171) is fixedly connected with loose ends mandril (175), end of the loose ends mandril (175) far from thread tension disc (171)
Portion is corresponding with loose ends electromagnet (176)；The loose ends electromagnet (176) is powered, end and the pine of the loose ends mandril (175)
Line electromagnet (176) is attracted, and the clamp slot (172) of the thread tension disc (171) is widened.
4. the wire-clamping device of sewing machine according to claim 3, it is characterised in that：Loose ends mandril is also cased with tune on (175)
Spring (177) is saved, one end of the adjustment spring (177) is against on thread tension disc (171), and the other end is against on loose ends mandril (175).
5. a kind of operational method of the wire-clamping device of sewing machine, characterized in that the wire-clamping device includes head (1), eedle
(5), rotating shuttle, the first tension disk (16) being set on head (1), the second tension disk (17) and thread take-up tension lever；Eedle (5) is equipped with
For the pinprick (501) that seam (8) line passes through, suture (8) sequentially pass through the second tension disk (17), thread take-up tension lever, the first tension disk (16),
The pinprick (501) of eedle (5)；Include the following steps：
1. the eedle (5) downwards prickseam material when, second tension disk (17) unclamps suture (8)；
2. after suture (8) is by rotary shuttle hook line below sewing, when thread take-up tension lever moves upwards take-up, first tension disk
(16) suture (8) is clamped.
6. the operational method of the wire-clamping device of sewing machine as claimed in claim 5, characterized in that
Above-mentioned steps 2. in, when suture (8) passes through rotary shuttle hook line, when thread take-up tension lever moves upwards take-up to close to peak, the
One tension disk (16) clamps the suture (8) between thread take-up tension lever and eedle (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436759.2A CN108374245B (en) | 2015-06-19 | 2015-06-19 | Operation method of thread clamping device of sewing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510349411.6A CN104911838B (en) | 2015-06-19 | 2015-06-19 | Sewing machine removes Bird's Nest device and application method |
| CN201810436759.2A CN108374245B (en) | 2015-06-19 | 2015-06-19 | Operation method of thread clamping device of sewing machine |
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| CN201510349411.6A Division CN104911838B (en) | 2015-06-19 | 2015-06-19 | Sewing machine removes Bird's Nest device and application method |
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| CN108374245A true CN108374245A (en) | 2018-08-07 |
| CN108374245B CN108374245B (en) | 2020-10-09 |
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| CN201510349411.6A Active CN104911838B (en) | 2015-06-19 | 2015-06-19 | Sewing machine removes Bird's Nest device and application method |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108374245B (en) | 2020-10-09 |
| CN104911838A (en) | 2015-09-16 |
| CN104911838B (en) | 2018-06-26 |
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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. |