CN204738119U - Sewing machine gets rid of bird's nest device - Google Patents
Sewing machine gets rid of bird's nest device Download PDFInfo
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- CN204738119U CN204738119U CN201520430320.0U CN201520430320U CN204738119U CN 204738119 U CN204738119 U CN 204738119U CN 201520430320 U CN201520430320 U CN 201520430320U CN 204738119 U CN204738119 U CN 204738119U
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- thread
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- eedle
- sewing
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Abstract
The utility model provides a sewing machine gets rid of bird's nest device should get rid of the bird's nest device including the drag hook, clamp, eedle and the presser foot board that are located aircraft nose below, and the drag hook is connected through pivot and aircraft nose, is equipped with the pinprick that supplies the suture to pass on the eedle, and the presser foot board is located the faller, the presser foot board be equipped with with the corresponding wire casing of crossing of eedle, cross the direction extension that the wire casing removed along the seam material, the bottom of wire casing be equipped with the thread cutter. This sewing machine gets rid of bird's nest device adopts the circular arc swing to catch hold of line trapping mechanism with a hook, cliies the eedle end of a thread behind the trimming, passes through the cooperation of the double -layered line tension releasing time of two tension disks when rising to stitch next time, provides enough stable line volume for beginning the sewing, makes and tightened up the seam upper thread fast under the condition of not taking the bottom line, and the end of a thread of cliping is cut off in the position near stitching the material pinhole, and it is short to remain the end of a thread, has thoroughly solved the problem of the bird's nest end of a thread.
Description
Technical field
The utility model relates to a kind of Sewing machines and removes Bird's Nest device.
Background technology
During Sewing machines sewing cloth, the end of a thread leaving certain length at the pinprick place of eedle is needed when starting to sew, during in order to have ensured to stitch, the end of a thread can not be deviate from from pinprick, but the end of a thread of the certain length on the pinprick of eedle can stay the sewing initial position of sewing when playing seam, affect the attractive in appearance of sewing.
Current processing mode mainly contains following several.
A kind of processing mode manually being held by the end of a thread when starting to sew, making the end of a thread stay above sewing, after sewing work terminates, manually carrying out repairing the end of a thread process.
Another kind of processing mode is, utilize dial line device upper once sew terminate in the end of a thread is lifted, after once sew time, rely on the action of Sewing machines thorn cloth hook line, the end of a thread taken to below sewing, ensure the attractive in appearance of sewing front.
A kind of more general mode is in addition at present, at head passing channel, a kind of electronics tension disk is set, when playing seam, suture is clamped certain hour by the action of electronics tension disk, unsettled the end of a thread is made to be brought to below sewing when playing seam, and by clamping suture, supply line by returning the line amount of dragging the end of a thread on eedle when making to stitch, the length of the end of a thread below sewing is shortened in final realization.
The mode of latter two process the end of a thread, due to Sewing machines quick acting, can be deposited in below sewing by the end of a thread when playing seam, form a nest like ball of string, be commonly called as " Bird's Nest " phenomenon, especially when playing the automatic reinforcing mode of seam, " Bird's Nest " phenomenon playing seam position is obvious especially.Although these two kinds of modes solve the problem that there is the end of a thread above upper thread, the end of a thread is transferred to below sewing, form Bird's Nest ball of string problem.
Have in current industry and a kind of to be clamped by the end of a thread by slip clamp line apparatus, presser feet arranges blade, pullling by wire-binding device and sewing when playing seam, makes the top presser feet edge of a knife of the end of a thread is cut off, solves " Bird's Nest " problem.But this mode is jammed due to the end of a thread, when playing seam the first pin, upper thread is tightened up and can takes to above sewing by bottom line the end of a thread, generating strap bottom line problem.A kind of method solving this problem is after clamping the end of a thread, by a set of throwing device, the upper thread in head drawing lines is beaten pine, and having made has enough upper thread line amounts during seam, avoids band bottom line problem.But the routing mode routing amount in the method is unstable; normal meeting is too much, has caused the end of a thread to receive not tight, and has caused secant time delay; cutting off rear the end of a thread remains long, and the throwing device of fixed journey system can not meet the problem playing seam take-up instability needing line amount different because needle gage is different simultaneously.Separately, due to head place limited space, the wire-clamping device of slip needs to stop pin position with presser feet and eedle and ensures closer distance, the passing through of cloth when can affect normal sewing operation, the problem of generation dossal; The end of a thread is hooked to be moved in thread tension disc and slide rail, and when drag hook leaves thread tension disc, the end of a thread is difficult to deviate from from thread tension disc, produces and piles up; Just destroy pressing sole crossed beam trunking in order to avoid blade distance sewing side, blade slices off the line of normal sewing, needs to make blade arrange the pinprick line certain distance leaving sewing, residual longer the end of a thread on cloth when causing secant like this.
Therefore, in view of foregoing description, existing device all cannot solve the end of a thread in sewing process preferably and easily be deposited in below sewing, forms the problem of a nest like ball of string.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of Sewing machines to remove Bird's Nest device, being easily deposited in below sewing, forming the problem of a nest like ball of string for solving in prior art the end of a thread in Sewing machines sewing process.
For achieving the above object and other relevant objects, the utility model provides a kind of Sewing machines to remove Bird's Nest device, its Sewing machines comprises head and is positioned at the needle plate below head, this removal Bird's Nest device comprises the drag hook, clamp, eedle and the pressure foot that are positioned at below head, drag hook is connected with head by rotating shaft, eedle is provided with the pinprick passed for suture, pressure foot is positioned on needle plate, pressure foot is provided with the crossed beam trunking corresponding with eedle, crossed beam trunking extends along the direction of sewing movement, and the bottom of crossed beam trunking is provided with thread cutter; Rotating shaft drives drag hook axis around the shaft to rotate below eedle and between clamp under the driving of driving mechanism, when drag hook is positioned at below eedle, hooked by suture below the pinprick of eedle, when drag hook turns to the position coordinated with clamp, suture is clamped by drag hook and clamp.
Preferably, clamp is fixedly connected with head by connecting plate.Further preferably, connecting plate is also fixed with hold-down plate spring, hold-down plate spring is positioned at the one side of clamp connecting plate dorsad, and hold-down plate spring applies the pressure to connecting plate direction to clamp.Further preferred, connecting plate is fixedly connected with by pressing plate set bolt with hold-down plate spring, clamp, is provided with control gap between clamp and connecting plate; Connecting plate is also provided with pressing plate adjuster, pressing plate adjuster comprises adjuster head and threaded joints, adjuster head is positioned at the one side of hold-down plate spring clamp dorsad, and threaded joints is threaded with connecting plate through behind hold-down plate spring, clamp, control gap successively.
Preferably, the opening of the crossed beam trunking of pressure foot, bottom are positioned on the center line of pressure foot, the bottom of crossed beam trunking is divided into off-line portion and secant portion, off-line portion extends along the center line of pressure foot, the initiating terminal in secant portion is positioned on the center line of pressure foot, secant portion walks around from the side in off-line portion, and curved extension is until the center line of pressure foot, and thread cutter is positioned at the bottom in secant portion.
Preferably, the driving mechanism of rotating shaft comprises support, crank, connecting rod and pull-core, support and head are fixed, rotating shaft is positioned on support and also can be rotated about axis, rotating shaft is also fixedly connected with one end of crank, crank away from one end of rotating shaft and one end of connecting rod hinged, the jointed shaft of connecting rod and the axis being parallel of rotating shaft, the other end of connecting rod is connected with pull-core, and pull-core is by magnet control adhesive; During electromagnet energising, pull-core adhesive, connecting rod drives drag hook to rotate to the direction of eedle by crank, rotating shaft.
Preferably, head is also provided with the first tension disk, the second tension disk, thread take-up tension lever, suture is successively through the pinprick of the second tension disk, thread take-up tension lever, the first tension disk, eedle.Further preferably, the first tension disk comprises electromagnet base and clamping plate, and suture passes between electromagnet base, clamping plate, and during electromagnet base energising, electromagnet base, clamping plate adhesive, clamp suture.Another kind of further preferred, second tension disk comprises thread tension disc, thread tension disc is circumferentially provided with the clamp groove of variable-width, one end and the clamp of thread tension disc adjust bolt thread and are connected, on clamp adjustment bolt, cover has Compress Spring, the other end of thread tension disc is fixedly connected with loose ends push rod, and loose ends push rod is corresponding with loose ends electromagnet away from the end of thread tension disc; Loose ends electromagnet is energized, and the end of loose ends push rod and loose ends electromagnetic actuation, the clamp groove of thread tension disc is widened.
As mentioned above, Bird's Nest device removed by the utility model Sewing machines, has following beneficial effect:
Bird's Nest device removed by this Sewing machines, adopt 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 next time when playing seam, there is provided sufficiently stable line amount for starting sewing, make to have tightened up seam upper thread fast when not being with bottom line, the end of a thread clamped is cut off in the position near sewing pin hole, residual the end of a thread is short, thoroughly solves the problem of Bird's Nest the end of a thread.
Accompanying drawing explanation
Fig. 1 is shown as the structural representation that Bird's Nest device removed by the utility model Sewing machines.
Fig. 2 a is shown as structural representation when drag hook that Sewing machines shown in Fig. 1 removes Bird's Nest device is positioned at below eedle.
Fig. 2 b is shown as the close-up schematic view that Bird's Nest device removed by the Sewing machines shown in Fig. 2 a.
Fig. 3 is shown as the rearview that Bird's Nest device removed by the Sewing machines shown in Fig. 1.
Fig. 4 is shown as the partial top view that Bird's Nest device removed by the Sewing machines shown in Fig. 1.
Fig. 5 a is shown as the relative position relation figure that Sewing machines shown in Fig. 1 removes suture and eedle in the sewing process of Bird's Nest device, drag hook, clamp, pressure foot.
Fig. 5 b is shown as the top view that Bird's Nest device removed by the Sewing machines shown in Fig. 5 a.
Fig. 5 c is shown as the Sewing machines shown in Fig. 5 b and removes the A-A of Bird's Nest device to sectional view.
Fig. 5 d is shown as the partial enlarged drawing that Bird's Nest device removed by the Sewing machines shown in Fig. 5 b.
Fig. 6 is shown as the structural representation that the first embodiment of the driving mechanism of Bird's Nest device removed by the Sewing machines shown in Fig. 1.
Fig. 7 is shown as the structural representation that the second embodiment of the driving mechanism of Bird's Nest device removed by the Sewing machines shown in Fig. 1.
Fig. 8 a is shown as the structural representation that the first tension disk of Bird's Nest device removed by the Sewing machines shown in Fig. 1.
Fig. 8 b is shown as the Sewing machines shown in Fig. 8 a and removes the A-A of the first tension disk of Bird's Nest device to schematic diagram.
Fig. 9 a is shown as the schematic diagram during loose ends electromagnet power-off of the second tension disk of the Sewing machines removal Bird's Nest device shown in Fig. 1.
Fig. 9 b is shown as the schematic diagram during loose ends electromagnet energising of the second tension disk of the Sewing machines removal Bird's Nest device shown in Fig. 9 a.
Element numbers explanation
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 trunking openings
Bottom 603 crossed beam trunkings
604 off-line portions
605 secant portions
7 rotating shafts
8 sutures
801 the end of a thread
9 thread cutters
The 901 thread cutter edges of a knife
10 driving mechanisms
101 supports
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 set bolts
14 control gaps
15 pressing plate adjusters
151 adjuster heads
152 threaded joints
16 first tension disks
161 electromagnet bases
162 clamping plate
17 second tension disks
171 thread tension discs
172 clamp grooves
173 clamp adjustment bolts
174 Compress Springs
175 loose ends push rods
176 loose ends electromagnet
177 regulating springs
Detailed description of the invention
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present utility model and effect easily.
Refer to shown in Fig. 1 to Fig. 9 b.Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, all should still drop in scope that technology contents that the utility model discloses can contain.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
As shown in Figures 1 to 4, the utility model provides a kind of Sewing machines to remove Bird's Nest device, the needle plate 2 that Sewing machines comprises head 1 and is positioned at below head 1, this removal Bird's Nest device comprises the drag hook 3, clamp 4, eedle 5 and the pressure foot 6 that are positioned at below head 1, drag hook 3 is connected with head 1 by rotating shaft 7, eedle 5 is provided with the pinprick 501 passed for suture 8, pressure foot 6 is positioned on needle plate 2, pressure foot 6 is provided with the crossed beam trunking 601 corresponding with eedle 5, crossed beam trunking 601 extends along the direction of sewing movement, and the bottom 603 of crossed beam trunking 601 is provided with thread cutter 9; Rotating shaft 7 drive under the driving of driving mechanism 10 drag hook 3 around the shaft 7 axis rotate below eedle 5 and between clamp 4, when drag hook 3 is positioned at below eedle 5, suture 8 below the pinprick 501 of eedle 5 is hooked, when drag hook 3 turns to the position coordinated with clamp 4, suture 8 is clamped by drag hook 3 and clamp 4.
Suture 8 is through the pinprick 501 of eedle 5, and the suture 8 below the pinprick 501 being positioned at eedle 5 is the end of a thread 801.Before sewing starts, driving mechanism 10 is energized, and rotating shaft 7 drives drag hook 3 to turn to the below of eedle 5 under the driving of driving mechanism 10, and the end of a thread 801 of the pinprick less than 501 of eedle 5 hooks by the gib head 301 of drag hook 3; Driving mechanism 10 power-off, rotating shaft 7 drives drag hook 3 to reset, and the end of a thread 801 that drag hook 3 hooks is sandwiched between drag hook 3 and clamp 4.Start sewing, eedle 5 starts sewing, and suture 8 is sewn on sewing, and the end of a thread 801 is left on sewing; Because bottom 603 direction of sewing to the crossed beam trunking 601 of pressure foot 6 in sewing process is moved, when the end of a thread 801 be sewn 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 between drag hook 3 and clamp 4; When this sewing terminates, after completing trimming, drive system 10 is energized, rotating shaft 7 drives drag hook 3 to rotate under the driving of driving mechanism 10, originally the end of a thread 801 be clipped between drag hook 3 and clamp 4 drops, new the end of a thread 801 below the pinprick 501 being positioned at eedle 5 hooks by drag hook 3, waits for the startup of next time sewing.
As shown in Figure 2 b, clamp 4 is fixedly connected with head 1 by connecting plate 11.
Connecting plate 11 is also fixed with hold-down plate spring 12, and hold-down plate spring 12 is positioned at the one side of clamp 4 connecting plate 11 dorsad, and hold-down plate spring 12 pairs of clamps 4 apply the pressure to connecting plate 11 direction.By using hold-down plate spring 12 pairs of clamps 4 to apply pressure, make there is certain confining force between clamp 4 and drag hook 3, this confining force can ensure that the end of a thread 801 is clamped by clamp 4, drag hook 3 and can not drop.
A kind of concrete structure that connecting plate 11 is connected with hold-down plate spring 12, clamp 4 as shown in Figure 2.Connecting plate 11 is fixedly connected with by pressing plate set bolt 13 with hold-down plate spring 12, clamp 4, is provided with control gap 14 between clamp 4 and connecting plate 11; Connecting plate 11 is also provided with pressing plate adjuster 15, pressing plate adjuster 15 comprises adjuster head 151 and threaded joints 152, adjuster head 151 is positioned at the one side of hold-down plate spring 12 clamp 4 dorsad, and threaded joints 152 is threaded with connecting plate 11 through behind hold-down plate spring 12, clamp 4, control gap 14 successively.By rotary actuator head 151, regulate the size of control gap 14, i.e. the pressure of adjustable hold-down plate spring 12 pairs of clamps 4, thus regulate the confining force 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 positioned on the center line of pressure foot 6, the bottom 603 of crossed beam trunking 601 is divided into off-line portion 604 and secant portion 605, off-line portion 604 extends along the center line of pressure foot 6, the initiating terminal in secant portion 605 is positioned on the center line of pressure foot 6, secant portion 605 walks around from the side in off-line portion 604, curved extension is until the center line of pressure foot 6, thread cutter 9 is positioned at the bottom in secant portion 605, and the edge of a knife 901 of thread cutter 9 is towards the direction of the opening 602 of crossed beam trunking 601.
Because the one side near needle plate 2 is provided with off-line portion 604, and secant portion 605 walks around off-line portion 604, the suture be sewn in sewing on sewing is placed in off-line portion 604 under normal circumstances, and can not in secant portion 605, and the thread cutter 9 that the suture avoided in sewing is arranged in secant portion 605 rubs disconnected; And the bottom in secant portion 605 is positioned on the center line of pressure foot 6, make the distance between thread cutter 9 and the stitching of sewing the shortest, make the end of a thread 801 be cut off the stitching of place near sewing, ensure that the end of a thread residual on sewing is shorter.
The driving mechanism 10 of rotating shaft 7 has multiple detailed description of the invention.Driving mechanism 10 comprises the support 101 fixing with head 1, rotating shaft 7 is positioned on support 101 and also can be rotated about axis, when driving mechanism 10 is energized, rotating shaft 7 drives drag hook 3 to rotate to the direction of eedle 5, the end of a thread 801 of the pinprick less than 501 of eedle 5 is hooked, and during driving mechanism 10 power-off, rotating shaft 7 resets, the end of a thread 801 that drag hook 3 hooks is sandwiched between drag hook 3 and clamp 4, and the detailed description of the invention of driving mechanism 10 as shown in Figure 6 and Figure 7.
As shown in 6 to Fig. 7, the driving mechanism 10 of rotating shaft 7 comprises support 101, crank 102, connecting rod 103 and pull-core 105, support 101 is fixed with head 1, rotating shaft 7 is positioned on support 101 and also can be rotated about axis, rotating shaft 7 is also fixedly connected with one end of crank 102, crank 102 away from one end of rotating shaft 7 and one end of connecting rod 103 hinged, the jointed shaft of connecting rod 103 and the axis being parallel of rotating shaft 7, the other end of connecting rod 103 is connected with pull-core 105, and pull-core 105 controls adhesive by electromagnet 106; When electromagnet 106 is energized, pull-core 105 adhesive, connecting rod 103 drives drag hook 3 to rotate to the direction of eedle 5 by crank 102, rotating shaft 7.Wherein, connecting rod 103 has two kinds with the connected mode of pull-core 105, and as shown in Figure 6, connecting rod 103 is connected by lever 104 with pull-core 105 the first connected mode, and the fulcrum of lever 104 is fixedly connected with support 101; As shown in Figure 7, connecting rod 103 is directly hinged with pull-core 105, the axis being parallel of its jointed shaft and rotating shaft 7 for the second connected mode.
Electromagnet 106 in above-mentioned driving mechanism 10 all can adopt cylinder or motor to replace.
As shown in Figure 6 to 7, connecting plate 11 also can be fixed on support 101, and connecting plate 11 and support 101 bearing are provided with elongated slot 111, fixes connecting plate 11 and support 101 by the bolt fixing with support 101 through elongated slot 111.Because bolt has certain activity space in elongated slot 111, the therefore relative position of connecting plate 11 also adjustable and support 101, thus adjustment 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, head 1 is also provided with the first tension disk 16, second tension disk 17, thread take-up tension lever, suture 8 is successively 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 comprises electromagnet base 161 and clamping plate 162, and suture 8 passes between electromagnet base 161, clamping plate 162.When electromagnet base 161 is energized, electromagnet base 161, clamping plate 162 adhesive, clamp suture 8; During electromagnet base 161 power-off, suture 8 unclamps by electromagnet base 161, clamping plate 162.
As shown in Fig. 9 a to Fig. 9 b, second tension disk 17 comprises thread tension disc 171, thread tension disc 171 is circumferentially provided with the clamp groove 172 of variable-width, one end and the clamp of thread tension disc 171 adjust bolt 173 and are threaded, on clamp adjustment bolt 173, cover has Compress Spring 174, the other end of thread tension disc 171 is fixedly connected with loose ends push rod 175, and loose ends push rod 175 is corresponding with loose ends electromagnet 176 away from the end of thread tension disc 171; Loose ends electromagnet 176 is energized, and the end of loose ends push rod 175 and loose ends electromagnet 176 adhesive, the clamp groove 172 of thread tension disc 171 is widened.On loose ends push rod 175, also cover has regulating spring 177, and one end of this regulating spring 177 is against on thread tension disc 171, and the other end is against on loose ends push rod 175.
As illustrated in fig. 9, be the state of loose ends electromagnet 176 power-off, now suture 8 clamps by clamp groove 172; As shown in figure 9b, be the state that loose ends electromagnet 176 is energized, now end and loose ends electromagnet 176 adhesive of loose ends push rod 175, clamp groove 172 is widened, and suture 8 can non-resistance slip in clamp groove 172.
The energising of above-mentioned loose ends electromagnet 176, electromagnet base 161 and power-off time point carry out intelligence according to different operations by automatically controlled pattern and switch.
When sewing beginning, the end of a thread 801 continues to be jammed, and along with eedle 5 thorn cloth downwards, loose ends electromagnet 176 is energized, clamp groove 172 loose ends, ensures that machine stitching supplies line non-resistance downwards, when suture is through rotary shuttle hook line, thread take-up tension lever moves upward take-up to during close to peak, when stitching owing to rising, the end of a thread 801 is sandwiched in top, and a wire loop of sewing out consumes a part of line amount, if now continue take-up, the wire loop pull-out sewing that will be formed before can be produced, by the phenomenon that bottom line the end of a thread is taken out of, in order to avoid there is this phenomenon, now the first tension disk 16 powers on, clamp the suture 8 between thread take-up tension lever and eedle 5, thread take-up tension lever is continued can not 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, so both can ensure not take wire loop and bottom line out of sewing, suture 8 is not pulled apart when can ensure again take-up.Ensure that seam is not with bottom line by the time match of above-mentioned loose ends clamp, beautified stitching, stabilize the performance that this removes Bird's Nest device.
The using method of Bird's Nest device removed by above-mentioned Sewing machines, mainly comprises the following steps:
1), after last sewing end completes trimming, driving mechanism 10 is energized, and rotating shaft 7 drives drag hook 3 to turn to the below of eedle 5 under the driving of driving mechanism 10, is hooked by the end of a thread 801 of the suture 8 of the pinprick less than 501 of eedle 5;
2) driving mechanism 10 power-off, rotating shaft 7 drives drag hook 3 to reset, and the end of a thread 801 that drag hook 3 hooks is sandwiched between drag hook 3 and clamp 4;
3) start sewing, eedle 5 starts sewing, and suture 8 is sewn on sewing, and the end of a thread 801 is left on sewing; Wherein, eedle 5 downwards prickseam material time, the second tension disk 17 unclamps suture 8; When suture 8 is by after the rotary shuttle hook line that is positioned at below sewing, thread take-up tension lever move upward take-up time, the first tension disk 16 clamps suture 8;
4) bottom 603 direction of sewing to the crossed beam trunking 601 of pressure foot 6 in sewing process is moved, and when the end of a thread 801 be sewn 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 between drag hook 3 and clamp 4;
5) when this sewing terminates, after completing trimming, drive system 10 is energized, and rotating shaft 7 drives drag hook 3 to rotate under the driving of driving mechanism 10, is originally clipped in drag hook 3 and drops with the end of a thread 801 in clamp 4.
The utility model Sewing machines removes drag hook 3, clamp 4 clamp of Bird's Nest device by arc swing, coordinates the pressure foot 6 of the band thread cutter 9 of optimal design secant when playing seam; The drag hook 3 of arc swing, clamp 4 the problem thoroughly solving sewing operation space is set, and adopt unidirectional clamping-line structure, realize the end of a thread 801 and deviate from from thread tension disc 4 fast, avoid the end of a thread and pile up; The secant portion 605 of pressure foot 6 is designed to oblique bracing wire road, protect the off-line portion 604 of pressure foot 6, simultaneously thread cutter 9 is near the pin hole line of sewing, and when making thread cutter 9 secant, edge of a knife distance pin hole line is nearer, on sewing, residual the end of a thread is shorter, effectively controls hook line scope simultaneously; By the cooperation of the time of the first tension disk 16, second tension disk 17 clamp, loose ends on the passing channel of head 1, solve the seamed belt bottom line problem produced because the end of a thread is jammed, eliminate throwing device, and stabilize seam for line amount, avoided throwing device that is unstable because of routing amount and fixed journey system and can not meet the problem playing seam take-up instability needing line amount difference to produce because needle gage is different.
In sum, Bird's Nest device removed by the utility model Sewing machines, adopt arc swing hook wire clamp line apparatus, eedle the end of a thread after trimming being clamped, by the cooperation of the clamp loose ends time of two tension disks next time when playing seam, providing sufficiently stable line amount for starting sewing, make to have tightened up seam upper thread fast when not being with bottom line, the end of a thread clamped is cut off in the position near sewing pin hole, and residual the end of a thread is short, thoroughly solves the problem of Bird's Nest the end of a thread.So the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (9)
1. Bird's Nest device removed by a Sewing machines, described Sewing machines comprises head (1) and is positioned at the needle plate (2) of described head (1) below, it is characterized in that: described removal Bird's Nest device comprises the drag hook (3) being positioned at head (1) below, clamp (4), eedle (5) and pressure foot (6), described drag hook (3) is connected with described head (1) by rotating shaft (7), described eedle (5) is provided with the pinprick (501) passed for suture (8), described pressure foot (6) is positioned on described needle plate (2), described pressure foot (6) is provided with the crossed beam trunking (601) corresponding with eedle (5), described crossed beam trunking (601) extends along the direction of sewing movement, the bottom of described crossed beam trunking (601) is provided with thread cutter (9), described rotating shaft (7) drive under the driving of driving mechanism (10) drag hook (3) around the shaft (7) axis described eedle (5) below and clamp (4) between rotation, when described drag hook (3) is positioned at eedle (5) below, the suture (8) of the pinprick (501) of described eedle (5) below is hooked, when described drag hook (3) turns to the position coordinated with described clamp (4), suture (8) is clamped by described drag hook (3) and clamp (4).
2. Bird's Nest device removed by Sewing machines according to claim 1, it is characterized in that: described clamp (4) is fixedly connected with described head (1) by connecting plate (11).
3. Bird's Nest device removed by Sewing machines according to claim 2, it is characterized in that: described connecting plate (11) is also fixed with hold-down plate spring (12), described hold-down plate spring (12) is positioned at the one side of described clamp (4) connecting plate (11) dorsad, and described hold-down plate spring (12) applies the pressure to described connecting plate (11) direction to described clamp (4).
4. Bird's Nest device removed by Sewing machines according to claim 3, it is characterized in that: described connecting plate (11) is fixedly connected with by pressing plate set bolt (13) with hold-down plate spring (12), clamp (4), is provided with control gap (14) between described clamp (4) and connecting plate (11); Described connecting plate (11) is also provided with pressing plate adjuster (15), described pressing plate adjuster (15) comprises adjuster head (151) and threaded joints (152), described adjuster head (151) is positioned at the one side of described hold-down plate spring (12) clamp (4) dorsad, and described threaded joints (152) is threaded with connecting plate (11) afterwards through described hold-down plate spring (12), clamp (4), control gap (14) successively.
5. Bird's Nest device removed by Sewing machines according to claim 1, it is characterized in that: the opening (602) of the crossed beam trunking (601) of described pressure foot (6), bottom (603) is positioned on the center line of pressure foot (6), the bottom (603) of described crossed beam trunking (601) is divided into off-line portion (604) and secant portion (605), described off-line portion (604) extends along the center line of described pressure foot (6), the initiating terminal of described secant portion (605) is positioned on the center line of described pressure foot (6), described secant portion (605) is walked around from the side of described off-line portion (604), curved extension is until the center line of described pressure foot (6), described thread cutter (9) is positioned at the bottom of described secant portion (605).
6. Bird's Nest device removed by Sewing machines according to claim 1, it is characterized in that: the driving mechanism (10) of described rotating shaft (7) comprises support (101), crank (102), connecting rod (103) and pull-core (105), described support (101) is fixed with head (1), described rotating shaft (7) is positioned at described support (101) and above also can be rotated about axis, described rotating shaft (7) is also fixedly connected with one end of described crank (102), described crank (102) away from one end of rotating shaft (7) and one end of connecting rod (103) hinged, the jointed shaft of described connecting rod (103) and the axis being parallel of described rotating shaft (7), the other end of described connecting rod (103) is connected with pull-core (105), described pull-core (105) controls adhesive by electromagnet (106), during described electromagnet (106) energising, described pull-core (105) adhesive, described connecting rod (103) drives drag hook (3) to rotate to the direction of described eedle (5) by crank (102), rotating shaft (7).
7. Bird's Nest device removed by Sewing machines according to claim 1, it is characterized in that: described head (1) is also provided with the first tension disk (16), the second tension disk (17), thread take-up tension lever, described suture (8) is successively through the pinprick (501) of the second tension disk (17), thread take-up tension lever, the first tension disk (16), eedle (5).
8. Bird's Nest device removed by Sewing machines according to claim 7, it is characterized in that: described first tension disk (16) comprises electromagnet base (161) and clamping plate (162), described suture (8) passes between (162) from described electromagnet base (161), clamping plate, during described electromagnet base (161) energising, described electromagnet base (161), clamping plate (162) adhesive, clamp suture (8).
9. Bird's Nest device removed by Sewing machines according to claim 7, it is characterized in that: described second tension disk (17) comprises thread tension disc (171), described thread tension disc (171) is circumferentially provided with the clamp groove (172) of variable-width, one end and the clamp of described thread tension disc (171) adjust bolt (173) and are threaded, the upper cover of described clamp adjustment bolt (173) has Compress Spring (174), the other end of described thread tension disc (171) is fixedly connected with loose ends push rod (175), described loose ends push rod (175) is corresponding with loose ends electromagnet (176) away from the end of thread tension disc (171), described loose ends electromagnet (176) energising, the end of described loose ends push rod (175) and loose ends electromagnet (176) adhesive, the clamp groove (172) of described thread tension disc (171) is widened.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520430320.0U CN204738119U (en) | 2015-06-19 | 2015-06-19 | Sewing machine gets rid of bird's nest device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520430320.0U CN204738119U (en) | 2015-06-19 | 2015-06-19 | Sewing machine gets rid of bird's nest device |
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| Publication Number | Publication Date |
|---|---|
| CN204738119U true CN204738119U (en) | 2015-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520430320.0U Withdrawn - After Issue CN204738119U (en) | 2015-06-19 | 2015-06-19 | Sewing machine gets rid of bird's nest device |
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| Country | Link |
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| CN (1) | CN204738119U (en) |
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| CN104911838A (en) * | 2015-06-19 | 2015-09-16 | 杰克缝纫机股份有限公司 | Bird nest removing device for sewing machine and using method thereof |
| CN106048910A (en) * | 2016-07-19 | 2016-10-26 | 苏州美山子制衣有限公司 | Presser foot of single-needle sewing machine |
| CN106283423A (en) * | 2016-08-26 | 2017-01-04 | 杰克缝纫机股份有限公司 | A kind of sewing machine and hook line secant method |
| CN107268203A (en) * | 2017-06-29 | 2017-10-20 | 杰克缝纫机股份有限公司 | A kind of thread-moving device |
| CN108251987A (en) * | 2018-04-23 | 2018-07-06 | 浙江美机缝纫机有限公司 | Sewing machine removes Bird's Nest device |
| WO2019101033A1 (en) * | 2017-11-27 | 2019-05-31 | 强信机械科技(莱州)有限公司 | Sewing machine and bird's nest prevention device thereof, and sewing machine presser foot |
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| CN104911838A (en) * | 2015-06-19 | 2015-09-16 | 杰克缝纫机股份有限公司 | Bird nest removing device for sewing machine and using method thereof |
| CN104911838B (en) * | 2015-06-19 | 2018-06-26 | 杰克缝纫机股份有限公司 | Sewing machine removes Bird's Nest device and application method |
| CN106048910B (en) * | 2016-07-19 | 2019-01-01 | 苏州美山子制衣有限公司 | A kind of presser feet of single needle sewing machine |
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| CN107268203A (en) * | 2017-06-29 | 2017-10-20 | 杰克缝纫机股份有限公司 | A kind of thread-moving device |
| WO2019101033A1 (en) * | 2017-11-27 | 2019-05-31 | 强信机械科技(莱州)有限公司 | Sewing machine and bird's nest prevention device thereof, and sewing machine presser foot |
| CN108251987A (en) * | 2018-04-23 | 2018-07-06 | 浙江美机缝纫机有限公司 | Sewing machine removes Bird's Nest device |
| CN111235773A (en) * | 2020-03-23 | 2020-06-05 | 杰克缝纫机股份有限公司 | Sewing machine and upper thread tension adjusting and bird nest reducing device thereof |
| WO2021189749A1 (en) * | 2020-03-23 | 2021-09-30 | 杰克缝纫机股份有限公司 | Sewing machine and upper thread tension adjustment and bird nest reduction device thereof |
| CN111235773B (en) * | 2020-03-23 | 2021-12-21 | 浙江杰克智能缝制科技有限公司 | Sewing machine and upper thread tension adjusting and bird nest reducing device thereof |
| CN116536858A (en) * | 2022-12-19 | 2023-08-04 | 上海富山精密机械科技有限公司 | Wire tension self-balancing device, self-balancing method and application thereof |
| CN116536858B (en) * | 2022-12-19 | 2024-01-23 | 上海富山精密机械科技有限公司 | Wire tension self-balancing device, self-balancing method and application thereof |
| WO2024131623A1 (en) * | 2022-12-19 | 2024-06-27 | 上海富山精密机械科技有限公司 | Thread tension self-balancing device, and thread tension self-balancing method and application thereof |
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| AV01 | Patent right actively abandoned |
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