CN104911838B - Sewing machine removes Bird's Nest device and application method - Google Patents
Sewing machine removes Bird's Nest device and application method Download PDFInfo
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- CN104911838B CN104911838B CN201510349411.6A CN201510349411A CN104911838B CN 104911838 B CN104911838 B CN 104911838B CN 201510349411 A CN201510349411 A CN 201510349411A CN 104911838 B CN104911838 B CN 104911838B
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Abstract
The present invention provides a kind of sewing machine removal Bird's Nest device and application method, the removal Bird's Nest device includes being located at drag hook, clamp, eedle and the pressure foot below head, drag hook is connect by shaft with head, eedle is equipped with the pinprick passed through for suture, pressure foot is located on needle plate, pressure foot is equipped with to be extended with the corresponding crossed beam trunking of eedle, crossed beam trunking along the direction that sewing moves, and the bottom of crossed beam trunking is equipped with thread cutter.The sewing machine removes 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, pass through the cooperation of the clamp loose ends time of two tension disks when playing seam next time, sufficiently stable line amount is provided to start sewing, makes quickly to have tightened seam upper thread in the case of without baseline, the end of a thread clamped is cut off close to the position of sewing pin hole, it is short to remain the end of a thread, thoroughly solves the problems, such as Bird's Nest the end of a thread.
Description
Technical field
The present invention relates to a kind of sewing machines to remove Bird's Nest device.
The invention further relates to a kind of application methods of sewing machine removal Bird's Nest device.
Background technology
Sewing machine sew cloth when, start to need at the pinprick of eedle there are the end of a thread of certain length during sewing, to
Ensure that the end of a thread will not be deviate from from pinprick during seam, but can have been stayed in when the end of a thread of the certain length on the pinprick of eedle is 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, the end of a thread is made to stay 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 during 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, hanging the end of a thread is made to be brought to sewing when playing seam in the following, and passing through folder
Firmly suture makes to pass through back during seam and drags the line amount of the end of a thread on eedle and supply 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 there are the end of a thread above upper thread, but the end of a thread are transferred to sewing
In the following, form 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, lead to when playing 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 after the end of a thread is clamped, and by a set of throwing device, the upper thread in head drawing lines is beaten
Pine has made have enough upper thread line amounts during seam, has avoided band baseline problem.But the routing mode routing amount in this method is unstable, often
Can be excessive, the end of a thread be caused 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 problem of take-up is unstable due to needle gage difference.In addition, due to empty at head
Between it is limited, the wire-clamping device of slip 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 easily 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, easily sewing is deposited 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 being located at drag hook, clamp, the machine 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 to be extended with the corresponding crossed beam trunking of eedle, crossed beam trunking 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, it is further fixed on pressing 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, adjusts
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 stent, crank, connecting rod and pull-core, and stent is fixed with head, shaft
It on stent 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 be 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
Device, thread take-up tension lever, the first tension disk, eedle pinprick.Further preferably the first tension disk includes electromagnet base and clamping plate, stitches
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 include thread tension disc, 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 the loose ends mandril of thread tension disc are consolidated
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 machine removal Bird's Nest devices
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 suture below the pinprick of eedle 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, driving mechanism is powered, and 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
Device, thread take-up tension lever, the first tension disk, eedle pinprick；Step 3) includes the following steps：
1. during 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 in the case of 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 structure 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 the 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 the 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 the sewing machine removal Bird's Nest device shown in Fig. 5 b.
Fig. 5 d are shown as the partial enlarged view of the 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 structure 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 the 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 the 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 stents
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 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 please refers to Fig.1 to shown in Fig. 9 b.It should be clear that structure, ratio, size depicted in this specification institute accompanying drawings etc.,
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, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, should all still fall disclosed
Technology contents can cover in the range of.Meanwhile in this specification it is cited as " on ", " under ", "left", "right", " in
Between " and " one " etc. term, be merely convenient to understanding rather than to limit the enforceable range of the present invention for narration, 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 the drag hook 3, clamp 4, eedle 5 and the pressure foot that are 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 to be extended with 5 corresponding crossed beam trunking 601 of eedle, crossed beam trunking 601 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 positioned 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 the end of a thread 801 of the pinprick of eedle 5 below 501；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, driving mechanism 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 is fallen, 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 ensure 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, adjusts
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, so as 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, 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 crossing line
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 is sewn on around off-line portion 604 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 embodiments for the driving mechanism 10 of shaft 7.Driving mechanism 10 includes and 1 fixed stent of head
101, shaft 7 is located on stent 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, the end of a thread 801 of the pinprick of eedle 5 below 501 is hooked, and driving mechanism 10 power off when, shaft 7 resets, draw
The end of a thread 801 that hook 3 hooks is sandwiched between drag hook 3 and clamp 4, specific embodiment such as Fig. 6 and Fig. 7 institutes of driving mechanism 10
Show.
As shown in 6 to Fig. 7, the driving mechanism 10 of shaft 7 includes stent 101, crank 102, connecting rod 103 and pull-core
105, stent 101 is fixed with head 1, and shaft 7 is located on stent 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 modes of connecting rod 103 and pull-core 105, the first connection mode 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 stent 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 stent 101, and connecting plate 11 is set with 101 bearing of stent
There is elongated slot 111, by passing through elongated slot 111 with 101 fixed bolt of stent come fixed connecting plate 11 and stent 101.Due to bolt
There is certain activity space in elongated slot 111, therefore connecting plate 11 also can adjust the relative position with stent 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
161st, 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
The clamp slot 172 of change, one end of thread tension disc 171 are threadedly coupled with clamp adjustment bolt 173, are cased in clamp adjustment bolt 173
Compressed spring 174, the other end of thread tension disc 171 are 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, it is the state that loose ends electromagnet 176 is powered, the end of loose ends mandril 175 is attracted with loose ends electromagnet 176 at this time, 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 that machine stitching supplies downwards line non-resistance；When suture is by rotary shuttle hook line, thread take-up tension lever moves upwards take-up
During to close to peak, since the end of a thread 801 is sandwiched in top, and a wire loop of sewing out consumes a part of line amount when playing seam,
If continuing take-up at this time, it can generate 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 during 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 during 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, and shaft 7 is in the driving lower band of driving mechanism 10
Dynamic drag hook 3 turns to the lower section of eedle 5, and the end of a thread 801 of suture 8 of the pinprick of eedle 5 below 501 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,
During 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, driving mechanism 10 is powered, and shaft 7 is under the driving of driving mechanism 10
Drag hook 3 is driven to rotate, drag hook 3 is clipped in 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 nearer apart from pin hole line during 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 to generate due to the end of a thread is jammed plays seamed belt baseline, eliminates throwing device, and stabilized seam
For line amount, avoid because routing amount is unstable and the throwing device of fixed journey system cannot meet because needing line amount different during needle gage difference
What is generated plays the problem of seam take-up is unstable.
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, is stitched to start
It threads and sufficiently stable line amount is provided, make quickly to have tightened seam upper thread in the case of 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 of 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 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 (11)
1. a kind of sewing machine removes Bird's Nest device, the sewing machine includes head (1) and the needle plate below the head (1)
(2), it is characterised in that：The removal Bird's Nest device includes being located at drag hook (3), clamp (4), the eedle (5) below head (1)
With pressure foot (6), the drag hook (3) is connect by shaft (7) with the head (1), and the eedle (5) is equipped with for suture
(8) pinprick (501) passed through, the pressure foot (6) on the needle plate (2), the pressure foot (6) equipped with eedle (5)
Corresponding crossed beam trunking (601), the crossed beam trunking (601) extend along the direction that sewing moves, the bottom of the crossed beam trunking (601)
Equipped with thread cutter (9)；The shaft (7) drives the axis of drag hook (3) (7) around the shaft in institute under the driving of driving mechanism (10)
It states and is rotated between clamp (4) below eedle (5), when the drag hook (3) is below eedle (5), by the eedle (5)
Suture (8) below pinprick (501) hooks, described when the drag hook (3) turns to the position coordinated with the clamp (4)
Drag hook (3) clamps suture (8) with clamp (4).
2. sewing machine according to claim 1 removes Bird's Nest device, it is characterised in that：The clamp (4) passes through connection
Plate (11) is fixedly connected with the head (1).
3. sewing machine according to claim 2 removes Bird's Nest device, it is characterised in that：It is also fixed on the connecting plate (11)
There is hold-down plate spring (12), the hold-down plate spring (12) is positioned at the clamp (4) backwards to the one side of connecting plate (11), the hold-down plate spring
(12) apply the pressure to the connecting plate (11) direction to the clamp (4).
4. sewing machine according to claim 3 removes Bird's Nest device, it is characterised in that：The connecting plate (11) and hold-down plate spring
(12), clamp (4) is fixedly connected by pressing plate fixing bolt (13), is equipped between the clamp (4) and connecting plate (11)
It adjusts gap (14)；Pressing plate adjuster (15) is additionally provided on the connecting plate (11), the pressing plate adjuster (15) is including adjusting
Device head (151) and threaded joints (152), the adjuster head (151) is positioned at the hold-down plate spring (12) backwards to clamp
(4) one side, after the threaded joints (152) sequentially pass through the hold-down plate spring (12), clamp (4), adjustment gap (14)
It is threadedly coupled with connecting plate (11).
5. sewing machine according to claim 1 removes Bird's Nest device, it is characterised in that：The crossed beam trunking of the pressure foot (6)
(601) opening (602), bottom (603) are on the center line of pressure foot (6), the bottom (603) of the crossed beam trunking (601)
It is divided into off-line portion (604) and secant portion (605), the off-line portion (604) extends along the center line of the pressure foot (6), described
The initiating terminal in secant portion (605) is located on the center line of the pressure foot (6), and the secant portion (605) is from the off-line portion
(604) side bypasses, the arc-shaped center line for extending up to the pressure foot (6), and the thread cutter (9) is positioned at the secant
The bottom in portion (605).
6. sewing machine according to claim 1 removes Bird's Nest device, it is characterised in that：The driving mechanism of the shaft (7)
(10) including stent (101), crank (102), connecting rod (103) and pull-core (105), the stent (101) and head (1) are solid
Fixed, the shaft (7) is on the stent (101) and can be rotated about axis, the shaft (7) also with the crank (102)
One end be fixedly connected, the crank (102) far from shaft (7) one end and one end of connecting rod (103) be hinged, the connecting rod
(103) articulated shaft is parallel with the axis of the shaft (7), and the other end and the pull-core (105) of the connecting rod (103) connect
It connects, the pull-core (105) is controlled by electromagnet (106) and is attracted；When the electromagnet (106) is powered, the actuation iron
Core (105) is attracted, and the connecting rod (103) drives direction of the drag hook (3) to the eedle (5) by crank (102), shaft (7)
Rotation.
7. sewing machine according to claim 1 removes Bird's Nest device, it is characterised in that：Is additionally provided on the head (1)
One tension disk (16), the second tension disk (17), thread take-up tension lever, the suture (8) sequentially pass through the second tension disk (17), thread take-up tension lever,
The pinprick (501) of first tension disk (16), eedle (5).
8. sewing machine according to claim 7 removes Bird's Nest device, it is characterised in that：First tension disk (16) includes
Electromagnet base (161) and clamping plate (162), the suture (8) pass through from the electromagnet base (161), clamping plate between (162), institute
When stating electromagnet base (161) energization, the electromagnet base (161), clamping plate (162) are attracted, and clamp suture (8).
9. sewing machine according to claim 7 removes Bird's Nest device, it is characterised in that：Second tension disk (17) includes
Thread tension disc (171), the thread tension disc (171) circumferentially arranged with variable-width clamp slot (172), the thread tension disc (171)
One end is threadedly coupled with clamp adjustment bolt (173), and compressed spring (174) is cased on the clamp adjustment bolt (173), described
The other end of thread tension disc (171) is fixedly connected with loose ends mandril (175), the separate thread tension disc (171) of the loose ends mandril (175)
End is corresponding with loose ends electromagnet (176)；The loose ends electromagnet (176) is powered, the end of the loose ends mandril (175) with
Loose ends electromagnet (176) is attracted, and the clamp slot (172) of the thread tension disc (171) is widened.
10. a kind of application method of sewing machine removal Bird's Nest device described in claim 1, which is characterized in that including following step
Suddenly：
1) last sewing terminates after completing trimming, and the driving mechanism (10) is powered, and the shaft (7) is in driving mechanism (10)
Driving under drag hook (3) is driven to turn to the lower sections of eedle (5), by the line of the suture (8) of the pinprick (501) of eedle (5) below
Head (801) hooks；
2) driving mechanism (10) power-off, the shaft (7) drive drag hook (3) to reset, the end of a thread that the drag hook (3) hooks
(801) it is sandwiched between the drag hook (3) and clamp (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；
4) sewing moves in sewing process to bottom (603) direction of the crossed beam trunking (601) of the pressure foot (6), when being stitched
When the end of a thread (801) on sewing encounters thread cutter (9), the end of a thread (801) is cut off by thread cutter (9), and the end of a thread (801) is left on institute
It states between drag hook (3) and clamp (4)；
5) when this sewing terminates, after completing trimming, driving mechanism (10) is powered, and the shaft (7) is in driving mechanism (10)
Driving is lower to drive drag hook (3) to rotate, and is clipped in the drag hook (3) originally and is fallen with the end of a thread (801) in clamp (4).
11. the application method of sewing machine removal Bird's Nest device according to claim 10, it is characterised in that：The head
(1) the first tension disk (16), the second tension disk (17), thread take-up tension lever are additionally provided on, the suture (8) sequentially passes through the second tension disk
(17), the pinprick (501) of thread take-up tension lever, the first tension disk (16), eedle (5)；The step 3) includes 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.
Priority Applications (2)
| 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 |
Applications Claiming Priority (1)
| 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 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810436759.2A Division CN108374245B (en) | 2015-06-19 | 2015-06-19 | Operation method of thread clamping device of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104911838A CN104911838A (en) | 2015-09-16 |
| CN104911838B true CN104911838B (en) | 2018-06-26 |
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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 |
| CN201810436759.2A Active CN108374245B (en) | 2015-06-19 | 2015-06-19 | Operation method of thread clamping device of sewing machine |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810436759.2A Active CN108374245B (en) | 2015-06-19 | 2015-06-19 | Operation method of thread clamping device of sewing machine |
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| CN105297295B (en) * | 2015-10-29 | 2017-11-07 | 张敬业 | Sewing-machine foot component |
| CN105420938B (en) * | 2015-12-29 | 2019-02-22 | 杰克缝纫机股份有限公司 | A kind of sewing machine removes Bird's Nest rapid changing knife band knife presser feet |
| CN105544098B (en) * | 2016-01-27 | 2017-10-17 | 强信机械科技(莱州)有限公司 | The anti-Bird's Nest device of flat seam machine |
| CN105568575B (en) * | 2016-03-05 | 2018-12-21 | 杰克缝纫机股份有限公司 | A kind of sewing machine removes the thread-loosening device and application method of Bird's Nest structure |
| JP2017221294A (en) * | 2016-06-14 | 2017-12-21 | しげる工業株式会社 | Sewing apparatus and sewing method |
| CN106319786B (en) * | 2016-10-25 | 2023-02-03 | 浙江中捷缝纫科技有限公司 | Wire grabbing mechanism |
| CN107574590B (en) * | 2017-10-12 | 2020-06-12 | 杰克缝纫机股份有限公司 | Double-needle sewing machine |
| CN108193389A (en) * | 2018-02-01 | 2018-06-22 | 莱州远好机械科技有限公司 | The control method of section line apparatus, sewing machine and sewing machine |
| CN108374246B (en) * | 2018-04-02 | 2023-11-28 | 强信机械科技(莱州)有限公司 | Bird nest preventing device for sewing machine |
| CN109881388B (en) * | 2019-03-01 | 2024-03-22 | 林泽贤 | Thread cutting assembly, thread cutting device and sewing machine |
| CN112522865B (en) * | 2019-09-18 | 2022-06-14 | 浙江中捷缝纫科技有限公司 | Control method and device of sewing equipment, storage medium and processor |
| CN113005661B (en) * | 2019-12-20 | 2022-08-02 | 杰克科技股份有限公司 | Method for controlling length stability of thread end in sewing machine needle |
| CN111041717A (en) * | 2019-12-27 | 2020-04-21 | 西安标准工业股份有限公司 | Control method of rear suction type bird-nest-free device |
| CN111560716B (en) * | 2020-05-26 | 2021-10-26 | 台州学院 | Automatic threading device in industrial sewing machine |
| CN113089202B (en) * | 2021-03-31 | 2024-09-17 | 上海富山精密机械科技有限公司 | Sewing machine, thread end collecting device of sewing machine and using method of thread end collecting device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108374245B (en) | 2020-10-09 |
| CN104911838A (en) | 2015-09-16 |
| CN108374245A (en) | 2018-08-07 |
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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. |