CN107938192A - Cut the control method of bottom line device, sewing machine and sewing machine - Google Patents
Cut the control method of bottom line device, sewing machine and sewing machine Download PDFInfo
- Publication number
- CN107938192A CN107938192A CN201711429419.9A CN201711429419A CN107938192A CN 107938192 A CN107938192 A CN 107938192A CN 201711429419 A CN201711429419 A CN 201711429419A CN 107938192 A CN107938192 A CN 107938192A
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- China
- Prior art keywords
- bottom line
- thread
- hot knife
- line device
- stent
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- 238000009958 sewing Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000033001 locomotion Effects 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000004831 Hot glue Substances 0.000 abstract description 6
- 239000004744 fabric Substances 0.000 description 19
- 238000010586 diagram Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- 239000002360 explosive Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 244000000626 Daucus carota Species 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 235000005770 birds nest Nutrition 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
- 235000005765 wild carrot Nutrition 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
- D05B65/006—Devices for severing the needle or lower thread with heated tools
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
- D05B65/06—Devices for severing the needle or lower thread and for disposing of the severed thread end ; Catching or wiping devices for the severed thread
Abstract
The present invention provides one kind and cuts bottom line device, the control method of sewing machine and sewing machine, cutting bottom line device includes needle plate, stent, hot knife and thread-cutting driving device, needle plate is provided with pin position, hot knife is arranged on stent, stent is located at the lower section of needle plate, movement makes hot knife be moved to pin position to thread-cutting driving device driving arm in the horizontal direction, bottom line is sheared by hot knife, the prior art is not only solved using blunt knife problem present in scissors, and hot knife is when cutting off bottom line, hot melt adhesive can also be carried out to the end of the end of a thread, prevent the end of a thread end bifurcated, it can also realize that the end of a thread is short at the same time, line and anti-Bird's Nest function are repaiied without secondary.
Description
Technical field
The present invention relates to sewing machine field, more particularly to a kind of control method for cutting bottom line device, sewing machine and sewing machine.
Background technology
There is a kind of sewing machine with the upper thread being connected with processing cloth and the thread cutter of inner line cut-out in the past, sewing
At the end of, thread cutter automatically or according to the instruction of the tangent line of operator in the bottom side of processing cloth in the lump cuts upper thread and inner line
It is disconnected.
It is follow-up to need manually but above-mentioned existing tangential way often leaves longer the end of a thread on cloth or clothes
Ground is trimmed using scissors, this just consumes substantial amounts of cost of labor, also consumes substantial amounts of time cost.
The content of the invention
What the first object of the present invention was to provide a kind of bonding of upper thread end cuts bottom line device.
The second object of the present invention is to provide a kind of sewing machine of upper thread end bonding.
The third object of the present invention is to provide a kind of control method of the sewing machine of upper thread end bonding.
In order to realize the first object of the present invention, the present invention provides one kind and cuts bottom line device, it is characterised in that including pin
Plate, stent, hot knife and thread-cutting driving device, needle plate are provided with pin position, and hot knife is arranged on stent, and stent is located at needle plate
Lower section, movement makes hot knife be moved to pin position to thread-cutting driving device driving arm in the horizontal direction.
By such scheme as it can be seen that being sheared by hot knife to bottom line, the prior art is not only solved using in scissors
Existing blunt knife problem, and hot knife is when cutting off bottom line, additionally it is possible to hot melt adhesive is carried out to the end of the end of a thread, prevents the end of a thread
End bifurcated.
Further scheme is to cut bottom line device to further include the hook device being arranged on stent, the hook of hook device
By pin position and for catching on bottom line, hook part be located at hot knife in the front of moving direction in portion, in the horizontal plane hook part and fervent
There is lead distance between knife.
Further scheme is in the vertical direction, and hot knife is on the position between needle plate and hook part.
Further scheme is that hook device is integrally formed with stent.
Therefore by setting hook device to carry out the bracing wire of certain lead distance to bottom line before cutting,
Prevent from going offline so that the end of a thread of bottom line is longer, and being integrally formed for hook part can simplify structure.
Further scheme is that stent is hinged on the inner face of needle plate, and thread-cutting driving device driving arm rotates.
Further scheme is to cut bottom line device to include transmission device, and transmission device is connected with thread-cutting driving device, is passed
Dynamic device is provided with rack, and stent is provided with gear, and rack and pinion coordinates.
Further scheme is to cut bottom line device to further include locking plate, and locking plate is fixedly connected with needle plate, and transmission device is set
There is locked groove, locking plate coordinates with locked groove.
Further scheme is to cut bottom line device to further include toothrow plate, and toothrow plate is arranged between needle plate and hook part, row
The inner surface of tooth plate be indent arcwall face, branch can frame in arc rotation in surface.
Therefore since stent will pass through pin position, need to be avoided accordingly on position is set, therefore pass through
Rotatable stent is set, and under non-severed process, stent can be turned on the position away from pin position, in not removal bracket
Avoidance is carried out by swinging mounting and can realize to carry out installation positioning to toothrow plate.
In order to realize the second object of the present invention, a kind of sewing machine of present invention offer, including presser feet, eedle and cut bottom line dress
Put, presser feet is located at the top of needle plate, and eedle is used to move back and forth in the pin position of presser feet and the pin position of needle plate, cuts the use of bottom line device
Bottom line device is cut in such scheme.
By such scheme as it can be seen that being sheared by hot knife to bottom line, the prior art is not only solved using in scissors
Existing blunt knife problem, and hot knife is when cutting off bottom line, additionally it is possible to hot melt adhesive is carried out to the end of the end of a thread, prevents the end of a thread
End bifurcated.
In order to realize the third object of the present invention, the present invention provides a kind of control method of sewing machine, it is characterised in that seam
Machine of threading includes presser feet, eedle and cuts bottom line device, and presser feet be located at the top of needle plate, and eedle is in the pin position of presser feet and needle plate
Pin position moves back and forth, and bottom line device is cut in cutting bottom line device using the above scheme.
Control method includes：
Thread-cutting driving device driving arm moves in the horizontal direction；
Hot knife is moved to the lower section of pin position and bottom line is cut off.
By such scheme as it can be seen that being sheared by hot knife to bottom line, the prior art is not only solved using in scissors
Existing blunt knife problem, and hot knife is when cutting off bottom line, additionally it is possible to hot melt adhesive is carried out to the end of the end of a thread, prevents the end of a thread
End bifurcated.
Brief description of the drawings
Fig. 1 is the structural reference figure of sewing machine first embodiment of the present invention.
Fig. 2 is structure chart of the line apparatus first embodiment in section of the present invention under raised configuration.
Fig. 3 is structure chart of the line apparatus first embodiment in section of the present invention under decline state.
Fig. 4 is structure chart of the line apparatus first embodiment in section of the present invention under lead state.
Fig. 5 is structure chart of the line apparatus first embodiment in section of the present invention under cut state.
Fig. 6 is that the present invention cuts structure chart of the bottom line device first embodiment in face side.
Fig. 7 is that the present invention cuts structure chart of the bottom line device first embodiment in bottom surface side.
Fig. 8 is the explosive view that the present invention cuts bottom line device first embodiment.
Fig. 9 is that the present invention cuts the sectional view of bottom line device first embodiment in an initial condition.
Figure 10 is that the present invention cuts sectional view of the bottom line device first embodiment under cut state.
Figure 11 is tangent principle schematic diagram of the present invention.
Figure 12 is the first schematic diagram of tangent line trigger device in sewing machine embodiment of the present invention.
Figure 13 is the second schematic diagram of tangent line trigger device in sewing machine embodiment of the present invention.
Figure 14 is that the present invention cuts structure chart of the bottom line device second embodiment in bottom surface side.
Figure 15 is the structure chart of sewing machine second embodiment of the present invention.
Figure 16 is the structure chart that sewing machine second embodiment of the present invention is located under bottom, side perspective.
Figure 17 is the local structural graph of sewing machine second embodiment of the present invention.
Figure 18 is the explosive view of line apparatus second embodiment in section of the present invention.
Figure 19 is the first tangent line schematic diagram of line apparatus second embodiment in section of the present invention.
Figure 20 is the second tangent line schematic diagram of line apparatus second embodiment in section of the present invention.
Figure 21 is that the present invention cuts structure chart of the bottom line device 3rd embodiment in bottom surface side.
Figure 22 is that the present invention cuts bottom line device 3rd embodiment explosive view.
Figure 23 is the first tangent line schematic diagram of line apparatus 3rd embodiment in section of the present invention.
Figure 24 is the second tangent line schematic diagram of line apparatus 3rd embodiment in section of the present invention.
Figure 25 is the principle schematic of tangent line in sewing machine control method embodiment of the present invention.
Figure 26 is the principle schematic of the anti-Bird's Nest of sewing machine control method embodiment of the present invention.
Figure 27 is the structure chart of sewing machine 3rd embodiment of the present invention.
The invention will be further described with reference to the accompanying drawings and embodiments.
Embodiment
Sewing machine first embodiment：
With reference to Fig. 1, Fig. 1 is the structural reference figure of sewing machine, and sewing machine includes head 11, is arranged on the handwheel of 11 side of head
111st, needle plate 41, the rotating shuttle 12 below needle plate and eedle 112 and presser feet 113 including being arranged on 11 opposite side of head,
The pin position 114 of through hole is provided through on presser feet 113, eedle 112 is used to move back and forth in the pin position 114 of presser feet 113, in presser feet
Recessing groove 115 is provided with 113 end face upward, recessing groove 115 is to be set along feed direction in the upper surface of presser feet 113
Sliding slot.
With reference to Fig. 2 to Fig. 5, section line apparatus 2 includes longitudinal driving device 27, stent 21, sliding block 25, hot knife and (does not show
Go out), trigger 26, longitudinal driving device 27 is arranged on the top of eedle 112 and is fixed on the head 11, in the present embodiment
In, longitudinal driving device 27 is using electromagnet, coil and spring with being combined into, i.e. spring pocket on electromagnet, wear by electromagnet
Coil is crossed, in an initial condition, the precompression of spring sets electromagnet upward so that electromagnet is located at a high position, online
After circle is powered so that electromagnet moves facing downward, then realizes the driving of longitudinal direction.The hot knife of this case can use sheet stainless
Steel, and application direct current is carried out to it so that the fever of hot knife moment then realizes that the hot melt of cut-out and the end of a thread to wire rod glues
Close, can just be heated for the mode of heating to hot knife using electromagnetic wave, microwave or ultrasonic wave.
Stent 21 includes upper end connecting portion 211, middle part connecting portion 212, side connections 213 and lower end connecting portion 215, on
End connecting portion 211 is located above the left side of middle part connecting portion 212, and side connections 213 are located on the right side of middle part connecting portion 212
Set just and obliquely, lower end connecting portion 215 is located at the lower section of middle part connecting portion 212.
Explanation is needed exist for, this case is to be based on sewing machine under normal operating condition using benchmark up and down,
Under user perspective up and down, and feed direction be from close to user be positioned against away from user position direction.
Upper end connecting portion 211 is fixedly connected with electromagnet, enables whole stent 2 under the drive of longitudinal driving device 27
It is enough to realize moving up and down for longitudinal direction.Lower end connecting portion 215 is provided with sliding slot 22 on the right side of presser feet 113, and sliding slot 22 is along feeding
Direction is set, and sliding slot 22 is provided with opening, rear side and position of the lower end connecting portion 215 in presser feet 113 on the end close to pin position
Limiting slot 23 is provided with rear side of sliding slot, limiting slot 23 is to set and be provided with to slide upper limit and lower limit along feed direction
Position.
Sliding block 25 includes sliding part, extension 251 and the limit protrusion 252 positioned at middle part, and sliding position is in sliding slot 22
And coordinate with sliding slot and slide, extension 251 extends to presser feet 113 from sliding slot 22, and extension 251 can slide in the opening, earnestly
Knife is arranged on extension 251 on the side of pin position 114 and positioned at the top of presser feet, and hot knife can be above recessing groove 115
Slide and be moved to the top of pin position.Limit protrusion 252, which is located in limiting slot 23, to be slided, and it is spacing to be limited groove 23.
Sliding block 25 is additionally provided with drive division 253, drive division in the rear side of sliding part in the opposite side of extension 251
253 plate-like settings, sliding part are connected to the lower section of drive division 253, and driving column 254 is additionally provided with the top of drive division 253.
Middle part connecting portion 212 is penetratingly provided with location hole 214 and location hole 216, and location hole 214 is horizontally disposed with along feed direction, fixed
Position hole 216 is set inclinedly.Driving column 254 is stretched out through location hole 214 and towards presser feet side.
Section line apparatus 2 is additionally provided with trigger 26 in the rear side of drive division 253, and the trigger 26 in the present embodiment uses
Trigger switch, the movement backward of drive division 253 can trigger trigger switch, be moved along Shi Zeke and separated with trigger switch.Triggering
Device 26 can be fixed on stent 2, with moving up and down for stent.
Thread guide devices include hook device 31, connecting rod 32 and retractable driving device 34, retractable driving device 34 using with
The identical device of longitudinal driving device 27, which is not described herein again, and retractable driving device 34 is fixed on side connections 213.
The top that hook device 31 is located at pin position in front end sets wired hook (as shown in Figure 1, follow-up figure is for simplification
Eliminate line hook), the present embodiment is outer can also to use round or other shapes in addition to using line hook, can mainly realize and catch on
Upper thread.Connecting rod 32 is located at the right side of presser feet 113 and is connected to connecting rod 32 positioned at the top of sliding slot 22, hook device 31
Free end on, the fixing end of connecting rod 32 is connected with the electromagnet of retractable driving device 34.Connecting rod 32 passes through location hole 216
Ground tangentially slides, and hook device 31 is moved along lead direction, lead direction by pin position top and towards feed direction
Rear set.In the present embodiment, between the angle between lead direction and vertical direction is 30 degree to 60 degree, and lead side
Between being 30 degree to 60 degree to the angle between horizontal direction.
Connecting rod 32 is additionally provided with linkage portion 321, and linkage portion 321 is vertically prolonged upward from the body of connecting rod 32
Stretch, linkage portion 321 is that the arrangement for hiding presser feet is provided with overmoving surface.
With reference to Fig. 6 to Fig. 8, cutting bottom line device 4 includes needle plate 41, sliding block 42, hot knife 48, driving device 43, hooking dress
44 and locking plate 46 are put, needle plate 41 is provided with pin position 40, and the inner face of needle plate 41 is provided with sliding slot 411 and locating slot 413, sliding slot
411 pass through pin position 40, and locating slot 413 is located on the side of sliding slot 411, framework 412 is provided with sliding slot 411, framework 412 is in pin
Through hole is set at position 40, and is provided with opening on another side.
Sliding block 42 is arranged in sliding slot 411 and can be slided along sliding slot 411, and sliding block 42 is set on the end 422 of pin position 40
Hot knife is put, sliding block 42 is additionally provided with driving column 421.Hook device 44 includes hook part 441, driving hole 444,445 and of recessing groove
Draw runner 442, hook part 441 are arranged on the lower section of hot knife, with reference to Fig. 9, have in the horizontal plane between hook part 441 and hot knife 48
Lead distance L1, and hot knife 48 is that hook part 441 is located at outside framework 412, and hot knife 48 and hook part 441 are equal in framework 412
Set in the form of sheets, therefore the work of lower section rotating shuttle can not be influenced.Driving column 421 coordinates through opening with driving hole 444 so that sliding
Block 42 and hot knife 48 can be driven by hook device 44.Preferably, hook part is set in the V-groove of indent, it can be more efficient
Catch on inner line in ground.
Recessing groove 445 is located at the side of hook part 441, its U-shaped groove is set, and draw runner 442 is used to coordinate in locating slot 413
Slide, be both provided with locked groove 443 in the lower section both sides of draw runner 442, card slot 461, card slot 461 and locked groove are provided with locking plate 46
443 snap locks, and locking plate 46 is fixedly connected on the inner face of needle plate 41 using screw 462.
Driving device 43 is also to use the device identical with longitudinal driving device 27, and which is not described herein again, driving device 43
Drive division 47 set in the form of sheets, drive division 47 is connected to the end face that hook device is located at the lower section of locating slot 413.In driving device
It is relatively fixed under 43 induced effect with locking plate 46 under effect so that hook device 44 will not fall down and can be along locating slot
413 slide, and the induced effect in hook device 44 and sliding block 42 so that hot knife 48 is slid at pin position 40.
With reference to Figure 11, section line apparatus will be illustrated with the control method for cutting the collaborative work of bottom line device, stitched below
The machine of threading, which further includes, declines trigger and tangent line trigger device 5, declines trigger and may be provided on the operation planar of sewing machine or set
Put on pedal and be arranged on pedal linkage, tangent line trigger device 5 on the side of handwheel.Zigzag tread patterns in illustrating below
Device 27, retractable driving device 34 and driving device 43 are controlled by Electromagnetic Control unit, due to the controlling party of electromagnet
Method is the prior art, and so it will not be repeated.
Sewing machine control method includes：
First, user, which triggers, declines trigger, and 27 driving arm 2 of longitudinal driving device drops to predeterminated position, can refer to Fig. 2,
Fig. 2 is stent 2 positioned at a high position, and hot knife and hook device 31, also in a high position, this does not just interfere the reciprocating motion of eedle,
Stent 2 decline after then as shown in figure 3, during extension 251 is located at 115 in recessing groove, this allows for hot knife can be more
Close to the cloth for being located at bottom side, the falling head of certain stent or the height of hot knife are also to adjust, as shown in Figure 3.
But tangent line trigger device 5 can be a trigger switch, also such as the structure of Figure 12 and Figure 13 in the present embodiment, be
Hot knife is not collided with eedle, therefore tangent line trigger device 5 is used cooperatively with handwheel.It is specific as follows, tangent line triggering
Device 5 includes electromagnet assembly 62 and trigger 61, and electromagnet assembly 62 can drive trigger 61 to be moved along the axial direction of handwheel 111
It is dynamic, protrusion 116 is provided with the peripheral surface of handwheel, the position of protrusion 116 is associated with the highest order of eedle 112.
After stent 21 declines, then trigger tangent line trigger device 6, make electromagnet assembly 62 along handwheel with being axially facing handwheel
Trigger 61 is released, then can be by the rotation of handwheel 111, protrusion 116 will trigger trigger 61, during triggering, eedle
Position is positioned at a high position.
Retractable driving device 34 and driving device 43 will be triggered with the triggering of trigger 61 according to certain sequential.
When retractable driving device 34 is triggered, 34 drive connection bar 32 of retractable driving device moves backwards so that hooking fills
31 are put to catch on upper thread and it is pulled out certain distance toward rear.With the movement of connecting rod 32, linkage portion 321 and driving column 254
Contact, as shown in Figure 4.
Moving backward with connecting rod 32 again so that driving column 254 drives drive division 253 to move backward, then drives
Sliding block 25 and hot knife movement, and realize cutting of the hot knife to upper thread on pin position, as shown in Figure 5.Cutting part is huge super
Under the action of acoustic wave energy, moment softening, fusing, intensity are greatly reduced, and need to only apply the strength of very little, so that it may reach cutting material
The purpose of material, and merge the end of the end of a thread, not jag., it is necessary to which presser feet is risen in compared with the prior art, stretched out passing through
Structure and scissors are cut, the state that the cloth of the prior art has no longer been held down, therefore the length of tangent line the end of a thread is uncontrollable,
It is general longer and need to trim.
And driving device 43 also drives hook device 44 and sliding block 42 to be moved along sliding slot 411, due to hook part 441 and hot knife
It is as shown in Figure 9 there are lead distance between 48, so as inner line is first caught in mobile hook part 441, and pull a distance and make
In line the end of a thread it is longer, then the movement with mobile sliding block 42, hot knife 48 then by pin position 40 and cut off inner line, such as
Shown in Figure 10.
The order of above-mentioned section line and Qie Li lines, can also cut inner line after first section line, either either at the same time
Section line after inner line is first cut, can be achieved on the purpose of the present invention.
Touch trigger device 26 is moved backward in drive division 253, and trigger 26 is to be used to reset to use, and can fill zigzag tread patterns
Put 27, retractable driving device 34 and driving device 43 reset, all recover to original state, i.e., extension 251 away from pin position,
Stent 21 rises, hot knife 48 is away from pin position.
Bottom line device is cut in addition to using the embodiment such as Fig. 7, reality as shown in figure 14 can also be used by cutting bottom line device
Example is applied, is mainly improved from driving device, specifically, with reference to Figure 14, bottom line device 5 is cut and further includes mounting bracket 52, drives
Dynamic device 51, slide plate 53 and connection sheet 54, mounting bracket 52 are used for installed in the bottom of sewing machine, and for fixing driving device
51, driving device 51 is located on the side of pin position for electric rotating machine or the rotating driving device of electromagnetic type, driving device 51, it is not
In the underface of pin position, the drive end 511 of driving device 51 is rotatable, and sliding slot 521, sliding slot are additionally provided with mounting bracket 52
521 is parallel with the sliding slot of needle plate, and the both ends of slide plate 53 are both provided with articulated section, and the first end and drive end 511 of slide plate 53 are hinged,
The first end 541 of connection sheet 54 is provided with through hole, and the second end 542 of connection sheet 54 is provided with mounting hole, and screw is fixed through this
Hole makes connection sheet 54 be fixedly connected with hook device, and the second end of slide plate 53 and the through hole of the first end 541 of connection sheet 54 are hinged.
By the rotation of driving device 51, slip of the slide plate 53 along sliding slot 521 is driven, then drives connection sheet 54 and hooking
The slip of device, then realizes corresponding hooking and cuts bottom line.
By such scheme as it can be seen that being moved longitudinally by longitudinal driving device driving arm so that hot knife being capable of basis
Actual demand adjusts upper thread length, if necessary to shorter the end of a thread, then be hot knife closer to cloth, by hot knife tangent line
Afterwards, not only stub is short meets requirement of dispatching from the factory, and the end after ultrasonic wave tangent line locally heats, and prevents end jag.Utilize
The setting of sliding slot and sliding block, convenient movement and arrangement with sliding block, does not interfere the movement and work of presser feet.Hot knife is located at presser feet
Top so that in section during line, presser feet can push down cloth always, and cutter carries out tangent line, such length of tangent line in the top of presser feet
Degree is more accurate controllable.The recessing groove of presser feet can facilitate the slip with hot knife, and make the end of a thread shorter.Limit protrusion and limiting slot
For limiting the displacement distance of hot knife, prevent hot knife from damaging.
Meanwhile one section of line length is first pulled out before tangent line by thread guide devices, ensure that upper thread will not come off in eedle, and pull out
Direction is to be located behind, without prejudice to the hand of user.After one section of line length is pulled out, section line apparatus carries out tangent line again, ensures machine
Upper thread on pin without departing from.Set by the angle after tiltedly, do not influence user's operation by human hand space, at the same using connecting rod and
The setting of linkage portion, after one section of upper thread is pulled out so that section line apparatus is driven by linkage portion, is moved so as to fulfill bracing wire and tangent line
Make continuity, reduce driving mechanism.
Furthermore inner line is cut with locally heating by the end of hot knife, prevent end jag, and compared to biography
Its longer life expectancy of cutting blade, cutting performance is more preferable, while hot knife can use less blade just can realize cutting, so
It can be installed on needle plate inner face sliding slot in, i.e., at the narrow space that hot knife can be between needle plate and rotating shuttle into
Row slides cutting, its is simple in structure, and cutting is accurate.By setting hook device to be carried out before cutting to inner line certain draw
Linear distance bracing wire so that the end of a thread of inner line is longer to be prevented from going offline, and is also provided between needle plate and rotating shuttle.In order to realize to heat
Cutter and hook device are relatively fixed and driven, it is necessary to be fixed on the side of sliding slot using locked groove and locking plate, and profit
The slip for then driving hot knife and hook device is driven in side with driving device.
Sewing machine second embodiment：
With reference to Figure 15 to Figure 18, the section line apparatus in sewing machine second embodiment includes thread-cutting driving device 76, stent 71, spiral shell
Nail 73, hot knife 74, connecting rod 75, thread-clamping device and thread guide devices, in the telescopic rod 117 that presser feet 113 connects, telescopic rod 117
Can vertically telescopic moving, then realize the lifting of presser feet 113, thread-cutting driving device 76 is arranged on the left side of presser feet 113
And be fixedly connected in the left end face of sewing machine, thread-cutting driving device 76 can use solenoid actuated mode, and drive end can
Stretch in the horizontal direction, drive end is provided with the location hole extended vertically, and telescopic rod 117 is provided with horizontal-extending positioning
Hole, connecting rod 75 have bar portion 751 and bar portion 752 in two end sets, and bar portion 751 passes through the location hole of telescopic rod 117, bar portion
752 pass through the location hole of drive end, with the lifting of telescopic rod 117 so that and connecting rod 75 can be slided along the location hole of drive end,
And the horizontal extension of drive end can also make 751 horizontal extension of bar portion.
The upper end 712 of stent 71 is located at the right side of telescopic rod 117 and is connected with bar portion 751, the bottom 713 of stent 71
Positioned at the top of presser feet 113, the initial position of bottom 713 is located at the left side of telescopic rod 117 or pin position, the company at the middle part of stent 71
Binding structure is set in multi link.Bottom 713 is provided with thread-clamping device and hot knife 74, and thread-clamping device uses spring 72,
Horizontally extending through hole 713 is set on bottom 713, opening, spring are provided with the radial direction perisporium at the middle part of through hole 713
72 are laterally positioned in through hole 713, the moving direction for being axially perpendicular to stent 71 of spring 72, and screw 73 is operated including outer end
Portion, the inner face 73 in through hole 713 and the positioning column 732 arranged on inner end 73 along axis is arranged on, screw 73 passes through
And spring 72 is passed through with 713 thread fitting of through hole, positioning column 732, spring 72 is connected to the inner face 731 and through hole of screw 73
Between 713 inner wall.
Stent 71 sets the mounting groove 714 of lateral arrangement, mounting groove 714 and 713 cloth in the same direction of through hole in the lower section of through hole 713
Put, hot knife 74 is installed in mounting groove 714, and the cutting part 741 of hot knife 74 is exposed, and referring to Figure 19, cutting part 741 is located at spiral shell
In the projection for following closely 73 in the vertical directions.
Figure 19 simultaneously is combined with reference to Figure 20, illustrates clamping and the cutting-off process of upper thread below, Figure 19 is non-dissengaged positions, Figure 20
State is turned off, upper thread passes through eedle and pin hole, and when cutting off upper thread, stent 71 is moved horizontally towards the right side, then drives 72 He of spring
The movement of hot knife 74, upper thread is clamped inside it by spring 72 first, as towards right movement, hot knife 74 can be to upper thread
Sheared, after shearing, the upper thread end of sewing machine is clamped by spring 72.
Thread guide devices are arranged on the top of stent 71, and thread guide devices include hook device and lead driving device 771, lead
Driving device 771 can use solenoid actuated mode, and hook device is located at the top of stent 71, and hook device is provided with fixed part
Part 772 and moving parts 773, fixed component 772 include fixing bracket, and fixing bracket is provided with the through hole of two coaxial settings,
Fixing bracket is arranged near the sliding groove 118 of thread take-up tension lever, and moving parts 773 is connected to lead driving device 771, moving parts
773 set hooking portion 774 between 772 two through holes of fixed component, and hooking portion 774 can use V-groove, U-type groove or the lantern ring, face
Line then passes through fixed component 772 and hooking portion 774 from top to bottom successively after passing through thread take-up tension lever, then realizes and catches on upper thread,
And lead driving device 771 be used for driving effect under and positioning column 775 pass through position-limiting action under, make moving parts 773
Moved relative to fixed component 772, realize the tension force degree or tightness for adjusting upper thread.
Therefore upper thread is sheared by hot knife, the prior art is not only solved using present in scissors
Blunt knife problem, and hot knife is when line is cut off over there, additionally it is possible to hot melt adhesive is carried out to the end of the end of a thread, prevents line head portion
Fork.Also, the length of the end of a thread can not only be controlled by the thread-clamping device of spring, realize shorter the end of a thread, and in tangent line
The upper thread end being pointed to after upper thread on machine carries out clamping control, ensures the upper thread on eedle without departing from addition, under
When one clothing is sewed, sewing and cabling with eedle, are controlled by rational length, the upper thread end of thread-clamping device
Portion can depart from and take the bottom side of clothing to, then realize clothing surface without the end of a thread, and the inner face of clothing only exists short-term head, without
Need again by manually carrying out repairing the end of a thread.And by the elastic adjusting to screw and spring, it can realize clamping different size
Wire rod.Furthermore thread guide devices are located at the top of stent, it utilizes fixed component and the phase position of moving parts, realization pair
The adjusting of the elasticity of upper thread, can realize the adjusting to stub using upper thread elasticity, be also prevented from eedle off-line.
Second tangent line schematic diagram of section line apparatus second embodiment.
Cut bottom line device 3rd embodiment：
With reference to Figure 21 and Figure 22, cutting bottom line device includes needle plate 4, stent 81, hot knife 83, toothrow plate 86, thread-cutting driving device
87, toothrow plate 86 has four toothrows, and row's tooth socket fit of toothrow plate 86 and needle plate 4 then realizes the propulsion to clothing, toothrow plate
86 inner surface is the arcwall face 862 of indent.Stent 81 is arranged on the lower section of toothrow plate 86.
Stent 81 is provided with articulated section at middle part, stent 81 be provided with positioned at the periphery of articulated section outer convex gear and be located at
The hook device and hot knife 83 of outer convex gear opposite side, specifically, the articulated section of stent 81 on 86 side of toothrow plate with
The inner end connection of needle plate 4, arcwall face 862 of the stent 81 from articulated section towards indent are provided with pivoted arm with stretching out, and pivoted arm can
Being rotated in arcwall face 862, hook device and hot knife 83 are arranged on the end of pivoted arm, in the present embodiment, hook device
It is integrally formed with stent 81, fluting is provided with the end of pivoted arm, the hook part 82 of hook device is arranged on the bottom wall side of fluting
Set edge and U-shaped groove or V-groove, and hot knife 83 is arranged on the cell wall of fluting, hook part 82 is located at hot knife 83 and is moving
The front in dynamic direction, and there is lead distance between hook part 82 and hot knife 83 in the horizontal plane, in the vertical direction hot knife
On 83 position between needle plate 4 and hook part 82, i.e., hook part 82 is located at the top of hot knife 83.
In addition, the toothrow plate 86 with concave curved surface 862 can be provided with outside corresponding escape groove, additionally it is possible to had
Four toothrows are sewed, and compared to the embodiment of the hot knife of above-mentioned linear drives, above-described embodiment can only be provided with three toothrows,
The present embodiment has the avoidance design more optimized in contrast.
Cut bottom line device and further include transmission device and locking plate 85, the transmission device of the present embodiment is provided with rack 84 and is passed
It is dynamic, locked groove 841 is also set up on transmission device, locking plate is fixedly connected with the inner face of needle plate 4, the locked groove 851 and locked groove of locking plate 85
841 coordinate, and transmission device is connected with thread-cutting driving device 87, under the driving effect of 87 horizontal direction of driving device so that pass
Dynamic device can move in the horizontal direction along locked groove 841, and be coordinated by rack and pinion so that and stent 81 rotates, after
But make the hook part 82 of hook device by pin position 40 and for catching on bottom line, and hot knife 83 is moved to the realization pair of pin position 40
The tangent line of bottom line.
It is not carry out the state diagram that tangent line is with reference to Figure 23 and Figure 24, Figure 23, Figure 24 is not carry out the state diagram that tangent line is,
The step of below to cutting bottom line, illustrates, and when seeing tangent line to bottom line, first, the in rotary moving of hook part first catches on bottom line and drive
One section of lead distance is moved in the horizontal direction, and then, the adjoint movement of hot knife 83 can cut off bottom line.
With reference to Figure 25, below to sewing machine second embodiment after upper thread cut-out, upper thread is taken to the bottom side of cloth to, then
Realizing upper thread the end of a thread, not only the end of a thread is short, and the end of a thread is located at the bottom side of cloth, ensures design on fabric surface beauty without the end of a thread.
The control method of sewing machine includes section line step and cuts bottom line step, and section line step includes：
First, see Figure 25 (a) and combine Figure 17, after installation triggering tangent line switch, hooking portion 774 moves, and pulls one section of upper thread
Distance；
Then, Figure 25 (b) is seen, sewing machine carries out corresponding knotting step；
Then, Figure 25 (c) is seen, stent 71 moves so that upper thread is clamped into spring 72, is then cut off by hot knife 74, and
Upper thread end on sewing machine is gripped by spring 72, and the upper thread end on cloth is still located at the appearance of cloth at this time
Face；
Finally, Figure 25 (d) is seen, under the induced effect of bottom line B, the upper thread F ends on cloth 10 are brought to the bottom side of cloth 10
Above and by bottom line B push down, then carry out cutting bottom line step B, it is included under the rotation drive of stent 81, and bottom is first caught in hook part 82
Line B simultaneously drives mobile one section of lead distance in the horizontal direction, and then, the adjoint movement of hot knife 83 can cut off bottom line B.
It can be seen that the end of upper thread F and the end of bottom line B are respectively positioned on 10 bottom side of cloth, it is that the surface of cloth 10 ensures aesthetics.
Need exist for explanation realize short-term head cut-out realize condition, be first upper thread F hot knife and bottom line B it is fervent
Knife may be provided at close to pin position place, then realize that the end of a thread after cut-out is shorter, it is not necessary to manually repair line again, still
Too short the end of a thread will cause difficulty to sewing next time, be embodied in the upper thread F off-lines of eedle and the bottom line B off-lines of rotating shuttle,
Therefore the solution of this case is：
In terms of the bottom line B of face, set hook part 82 to pull a distance, can then realize anti-off line；
In terms of upper thread F, the relative movement in hooking portion 774 is set, adjusts the elasticity of upper thread F, while using spring 72 to upper thread F
End is clamped, then ensure upper thread F will not run-bake-needle fault, while can also realize anti-Bird's Nest function.
For anti-Bird's Nest function, illustrated by Figure 26, when sewing another beginning of cloth 10, with reference to Figure 26
(a), the end of upper thread F is clamped by spring 72, and upper thread F passes through the pin hole of eedle, then, with reference to Figure 26 (b), eedle knit stitch
The first pin of sewing is carried out, the end of upper thread F is also clamped by spring 72 at this time, referring finally to Figure 26 (c), after sewing several pins, face
The end of line F is pullled and departs from the clamping of spring 72, is finally not only brought to the bottom side of cloth 10, but also the end of a thread is short, sewing
It is very beautiful, there is no Bird's Nest phenomenon, above-mentioned function realize mainly clamped by the end of a thread of spring, rational elasticity and
The distance controlling of the end of a thread and eedle pin hole（I.e. through the remaining line length of pin hole）.
In addition, for thread-clamping device in addition to being clamped using spring to line, moreover it is possible to line is pressed from both sides using shrapnel
Hold, or wire casing of wire clamp, rational width etc., these can realize the clamping to upper thread, you can realize the mesh of the present invention
, within protection scope of the present invention.
With reference to Figure 27, the 3rd embodiment of sewing machine can also optimize the position of thread-cutting driving device 76,
Thread-cutting driving device 76 can also be arranged on the rear side of presser feet 113, and can complete to be driven by connecting rod 75, i.e., away from operator
On the side of member, it is also to achieve the object of the present invention.
Therefore bottom line B is sheared by hot knife, the prior art is not only solved using present in scissors
Blunt knife problem, and hot knife is when cutting off bottom line B, additionally it is possible to hot melt adhesive is carried out to the end of the end of a thread, prevents the end of a thread end
Bifurcated.Since stent will pass through pin position, need to be avoided accordingly on position is set, therefore pass through rotatable stent
Set, under non-severed process, stent can be turned on the position away from pin position, pass through swinging mounting in not removal bracket
Carry out avoidance and can realize to carry out installation positioning to toothrow plate.
Claims (10)
1. cut bottom line device, it is characterised in that including needle plate, stent, hot knife and thread-cutting driving device, the needle plate is provided with
Pin position, the hot knife are set on the bracket, and the stent is located at the lower section of the needle plate, and the thread-cutting driving device drives
Moving the stent, movement makes the hot knife be moved to the pin position in the horizontal direction.
2. according to claim 1 cut bottom line device, it is characterised in that：
It is described cut bottom line device and further include hook device on the bracket is set, described in the hook part of the hook device is passed through
Pin position and for catching on bottom line, the hook part are located at the hot knife in the front of moving direction, in the horizontal plane the hook part
There is lead distance between the hot knife.
3. according to claim 2 cut bottom line device, it is characterised in that：
In the vertical direction, the hot knife is on the position between the needle plate and the hook part.
4. according to claim 3 cut bottom line device, it is characterised in that：
The hook device is integrally formed with the stent.
5. bottom line device is cut according to claim 2 to 4 any one of them, it is characterised in that：
The stent is hinged on the inner face of the needle plate, and the thread-cutting driving device drives the holder pivots.
6. according to claim 5 cut bottom line device, it is characterised in that：
The bottom line device of cutting includes transmission device, and the transmission device is connected with the thread-cutting driving device, the transmission dress
Install and be equipped with rack, the stent is provided with gear, and the rack coordinates with the gear.
7. according to claim 6 cut bottom line device, it is characterised in that：
The bottom line device of cutting further includes locking plate, and the locking plate is fixedly connected with the needle plate, and the transmission device is provided with lock
Groove, the locking plate coordinate with the locked groove.
8. according to claim 5 cut bottom line device, it is characterised in that：
The bottom line device of cutting further includes toothrow plate, and the toothrow plate is arranged between the needle plate and the hook part, the row
The inner surface of tooth plate be indent arcwall face, the branch can frame in the arc rotation in surface.
9. sewing machine, including presser feet, eedle and cut bottom line device, it is characterised in that：
The presser feet is located at the top of the needle plate, and the eedle is used for past in the pin position of the pin position of the presser feet and the needle plate
Multiple mobile, the bottom line device of cutting cuts bottom line device using any one of them of the claims 1 to 8.
10. the control method of sewing machine, it is characterised in that sewing machine includes presser feet, eedle and cuts bottom line device, the presser feet position
In the top of the needle plate, the eedle is used to move back and forth in the pin position of the presser feet and the pin position of the needle plate, described to cut
Bottom line device cuts bottom line device using any one of them of the claims 1 to 8；
The control method includes：
The thread-cutting driving device drives the stent to move in the horizontal direction；
The hot knife is moved to the lower section of the pin position and the bottom line is cut off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429419.9A CN107938192A (en) | 2017-12-26 | 2017-12-26 | Cut the control method of bottom line device, sewing machine and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711429419.9A CN107938192A (en) | 2017-12-26 | 2017-12-26 | Cut the control method of bottom line device, sewing machine and sewing machine |
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| CN107938192A true CN107938192A (en) | 2018-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711429419.9A Pending CN107938192A (en) | 2017-12-26 | 2017-12-26 | Cut the control method of bottom line device, sewing machine and sewing machine |
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| CN109137286A (en) * | 2018-09-20 | 2019-01-04 | 林泽贤 | Thread cutter |
| CN112210909A (en) * | 2020-10-14 | 2021-01-12 | 刘爱鸣 | Thread cutting device for garment processing |
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