CN208604321U - Section line apparatus and sewing machine - Google Patents

Abstract

The utility model provides a kind of section line apparatus and sewing machine, including thread cutter, line stripper and hook device, thread cutter includes tangent line bracket, wire-clamping device and cutter, wire-clamping device and cutter are arranged on tangent line bracket, wire-clamping device is located at the top of cutter, line stripper includes pipeline purging driving device and pipeline purging bracket, pipeline purging bracket is provided in lower end, pipeline purging driving device driving pipeline purging bracket moves in the horizontal direction, hook device wire-clamping device top and can be mobile towards wire-clamping device, utilize thread cutter and moveable hook device, hook device catches on upper thread and keeps upper thread mobile towards wire-clamping device, upper thread by wire-clamping device after being clamped, the cutter that can be located at below wire-clamping device is cut off, not only realize that the end of a thread is shorter, it does not need secondary to repair line, since the end of upper thread is clamped, even if therefore at eedle The upper thread of reservation is shorter will not to lead to run-bake-needle fault, therefore can realize prevents Bird's Nest from generating when eedle plays seam.

Description

Section line apparatus and sewing machine

Technical field

The utility model relates to sewing machine field more particularly to a kind of section line apparatus and sewing machine.

Background technique

There is a kind of sewing machine of thread cutter with the upper thread being connected with processing cloth and baseline cutting in the past, was 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 together cuts upper thread and baseline It is disconnected.

However above-mentioned existing tangential way often leaves longer the end of a thread on cloth or clothes, it is subsequent to need manually Ground is trimmed using scissors, this just consumes a large amount of cost of labor, also consumes a large amount of time cost.Simultaneously because existing sewing The machine eedle off-line when playing seam in order to prevent, therefore can remain with longer upper thread at eedle, however when this will lead to stitch Bird's Nest is generated, the aesthetics of clothes is shone into influence.

Utility model content

First purpose of the utility model be to provide a kind of the end of a thread it is shorter and can anti-Bird's Nest section line apparatus.

Second purpose of the utility model be to provide a kind of the end of a thread it is shorter and can anti-Bird's Nest sewing machine.

In order to realize first purpose of the utility model, the utility model provides a kind of section line apparatus, comprising:

Thread cutter, thread cutter include tangent line bracket, wire-clamping device and cutter, and wire-clamping device and cutter, which are arranged at, to be cut On line bracket, wire-clamping device is located at the top of cutter；

Line stripper, line stripper include pipeline purging driving device and pipeline purging bracket, and pipeline purging bracket is provided with hook in lower end Line apparatus, pipeline purging driving device driving pipeline purging bracket move in the horizontal direction, hook device wire-clamping device top and can court It is mobile to wire-clamping device.

By above scheme as it can be seen that using the thread cutter that can be fixed at by fabric clamp, and using in line stripper Moveable hook device, hook device catch on upper thread and keep upper thread mobile towards wire-clamping device, and upper thread is pressed from both sides by wire-clamping device After holding, can by be located at wire-clamping device below cutter cut off, not only realize the end of a thread it is shorter, do not need it is secondary repair line, moreover, because The end of upper thread is clamped, even if therefore the upper thread that retains at eedle is shorter will not lead to run-bake-needle fault, therefore when can realize that eedle plays seam Prevent Bird's Nest from generating.

Further scheme is that wire-clamping device is spring, and spring is transversely disposed on bracket.

Further scheme is that hole is provided on bracket, and through slot is provided on the radial peripheral wall in hole, and spring is arranged in hole It is interior.

Further scheme is that thread cutter further includes block and screw, and block is provided with location hole, and screw passes through fixed Position hole is connect with tangent line bracket, and block is abutted with spring.

Therefore upper thread is clamped by spring, and can by screw and block to the dilatability of spring into Row is adjusted, so that spring can adapt to the sewing thread of different thicknesses and material.

Further scheme is that tangent line bracket is provided with mounting groove below hole, and cutter is arranged in mounting groove, peace Tankage is connected to through slot.

Therefore the connection setting of through slot, it is to provide through slot for the cabling of upper thread, so that can be suitable after upper thread is clamped It is cut by cutter on sharp ground.

Further scheme is that section line apparatus includes thread-loosening device, and thread-loosening device includes loose ends driving device and line Holding meanss, line holding meanss are located at the top of hook device, and loose ends driving device driving line holding meanss are moved in the horizontal direction It is dynamic.

Therefore thread-loosening device is used to adjust upper thread elasticity and the length above eedle, not only contributes to prevent face Line run-bake-needle fault, and can further prevent the generation of Bird's Nest.

Further scheme is that line holding meanss and the driving end of loose ends driving device are hinged, and loose ends driving device is driven Moving-wire holding meanss rotate in the horizontal direction.

Therefore the setting by rotating bracing wire, the distance of loose ends can be made further to improve, for different materials Material and the wire rods with different elasticity, the twist, are designed by the loose ends of big distance, can be suitable for a variety of wire rods.

In order to realize second purpose of the utility model, the utility model provides a kind of sewing machine, including fabric clamp, eedle With section line apparatus, eedle is used for the needle position in fabric clamp and moves back and forth, which is characterized in that section line apparatus is using the above scheme The section line apparatus of any one；Bracket is fixedly connected on fabric clamp, and cutter and wire-clamping device are respectively positioned on the same side of needle position, Hook device is movable to the top of needle position.

By above scheme as it can be seen that using the thread cutter that can be fixed at by fabric clamp, and using in line stripper Moveable hook device, hook device catch on upper thread and keep upper thread mobile towards wire-clamping device, and upper thread is pressed from both sides by wire-clamping device After holding, can by be located at wire-clamping device below cutter cut off, not only realize the end of a thread it is shorter, do not need it is secondary repair line, moreover, because The end of upper thread is clamped, even if therefore the upper thread that retains at eedle is shorter will not lead to run-bake-needle fault, therefore when can realize that eedle plays seam Prevent Bird's Nest from generating.

Further scheme is that section line apparatus includes thread-loosening device, and thread-loosening device includes wire installation, wire installation It is fixed at the top of eedle, wire installation is provided with the guide portion for guiding upper thread.

Therefore wire installation is realized that upper thread can smoothly and vertically be introduced to eedle, is guaranteed for guiding upper thread The sewing of eedle runs well.

Detailed description of the invention

Fig. 1 is structure chart of the utility model sewing machine first embodiment under the first visual angle.

Fig. 2 is structure chart of the utility model sewing machine first embodiment under the second visual angle.

Fig. 3 is structure chart of the utility model sewing machine first embodiment under third visual angle.

Fig. 4 is the structure chart of the utility model sewing machine first embodiment the midsagittal plane line apparatus.

Fig. 5 is the first schematic diagram of the utility model sewing machine first embodiment the midsagittal plane line step.

Fig. 6 is the second schematic diagram of the utility model sewing machine first embodiment the midsagittal plane line step.

Fig. 7 is the utility model sewing machine first embodiment in the structure chart being located under bottom, side perspective.

Fig. 8 is the Structure explosion diagram of the utility model sewing machine first embodiment the midsagittal plane line apparatus.

Fig. 9 is the structure chart of the utility model sewing machine first embodiment the midsagittal plane line apparatus.

Figure 10 is the first schematic diagram that baseline step is cut in the utility model sewing machine first embodiment.

Figure 11 is the second schematic diagram that baseline step is cut in the utility model sewing machine first embodiment.

Figure 12 is the schematic illustration of tangent line in the utility model sewing machine control method embodiment.

Figure 13 is the schematic illustration of the anti-Bird's Nest of the utility model sewing machine control method embodiment.

Figure 14 is the local structural graph of the utility model sewing machine second embodiment the midsagittal plane line apparatus.

Figure 15 is local structural graph of the utility model sewing machine second embodiment the midsagittal plane line apparatus under another visual angle.

Figure 16 is the structure chart of thread cutter in the utility model sewing machine second embodiment.

Figure 17 is the structure chart of thread cutter in the utility model sewing machine 3rd embodiment.

Figure 18 is the structure chart of thread cutter in the utility model sewing machine fourth embodiment.

The following is a further explanation of the present invention with reference to the accompanying drawings and embodiments.

Specific embodiment

Sewing machine first embodiment:

Referring to figs. 1 to Fig. 3, sewing machine 1 includes head 11 and base 12, and head 11 is arranged on base 12, on head 11 It is provided with vertical slot 111, is provided with thread take-up tension lever in slot 111, the lower part of sliding slot 111 is provided with tension disk 13.On head 11 It is additionally provided with fabric clamp 112 and eedle 114, is provided on fabric clamp 112 through the needle position 113 of through-hole, needle position is eedle operation Space, the operation highest point of eedle is upper needle position in the top of needle plate, the operation minimum point of eedle in the lower section of needle plate, It is knit stitch position, and eedle carries out sewing movement in upper needle position and the reciprocating movement of knit stitch interdigit, and eedle 114 is used in fabric clamp 112 Needle position 113 move back and forth.Head 11 is additionally provided with tangent plane device 2 in the top of fabric clamp 112.

Referring to Fig. 4, section line apparatus 2 includes thread cutter, line stripper and thread-loosening device 27, and thread cutter includes tangent line Bracket 21, wire-clamping device 22 and hot knife 25, tangent line bracket 21 be fixedly connected on the side of fabric clamp 112, tangent line bracket 21 Blind hole 211, mounting groove 215, blind hole 214 and positioning step 213, blind hole 211, blind hole are provided on the same side of needle position 113 214 and positioning step 213 be respectively positioned on the top of mounting groove 215, and blind hole 211 is located at the surface of mounting groove 215, blind hole 211, Mounting groove 215 and blind hole 214 extend along same level direction, are provided with through slot 212 on the radial peripheral wall of blind hole 211, install Slot 215 is connected to through slot 212, and the bottom wall of through slot 212 is inclined to set.

Thread-clamping device 22 is spring, and spring is transversely disposed on bracket, and specifically, spring is arranged in blind hole 211, The middle part of spring is located in through slot 212, and the first end of spring is abutted and the side wall of through slot 212 or abutted and the bottom wall of blind hole 211, The second end of spring is located at positioning step 213, and thread cutter further includes block 23 and screw 24, and block 23 is arranged in positioning table On rank 213, block 23 is provided with location hole, and screw 24 passes through location hole and connect with the blind hole 214 of tangent line bracket 21, block 23 and Spring abuts, and by the telescopic adjustment of screw 24, can then pass through the flexible of block, the stroke of adjustment spring, due to spring Comparatively fine wire rod can be clamped in compression, spring can clamp more thick wire rod in stretching, extension, then It realizes the clamping adaptation of different wire rods, and another screw can also be set in the side of screw 24, screw 24 is carried out again admittedly It is fixed.Hot knife 25 is arranged in mounting groove 215, and the underface positioned at spring 22 of hot knife 25, the hot knife of this case can be used Sheet stainless steel, and application direct current is carried out to it, so that cutting and the end of a thread to wire rod are then realized in the fever of hot knife moment Hot melt adhesive, electromagnetic wave, microwave or ultrasonic wave also can be used for the heating method to hot knife and heat, in addition may be used also Using the cutter of relative movement blade type, wherein one is fixed another mobile cutter cutter, can also be independent one cutter Upper thread cutting is carried out, above-mentioned cutting mode is the cutter scheme of this case.

Line stripper includes supporting support 263, limited post 264, pipeline purging driving device 266 and pipeline purging bracket 261, support branch Frame 263 is fixedly connected on the back of head 11, and supporting support 263 is provided with the sliding slot 265 of lateral arrangement, and sliding slot 265 is in closing Setting, limited post 264 are fixedly installed across bracket, and limited post 264 adjustably adjusts and is located at a side end of sliding slot 265 On, pipeline purging driving device 266 uses solenoid actuated mode, the driving end of pipeline purging driving device 266 can along the chute 265 extension Direction is flexible, and the driving end of pipeline purging driving device 266 is used to be fixedly connected across sliding slot 265 and with pipeline purging bracket 261, pipeline purging branch Frame 261 is in the bracket setting from top to bottom extended, and pipeline purging bracket 261 is provided with hook device 262, hook device in lower end 262 and pipeline purging bracket 261 in being wholely set, hook device 262 and V-shaped slot is arranged, hook device 262 is located at eedle and clamp It is moved in the horizontal direction on position between device 22, drives pipeline purging bracket 261 to move in the horizontal direction in pipeline purging driving device 266 Dynamic, so that hook device 262 is mobile towards or away from wire-clamping device 22, and the driving end of pipeline purging driving device 266 can be by sliding slot 265 or limited post 264 limit.

Thread-loosening device 27 includes that supporting support 273, connecting rod 275, rotatable parts 274, loose ends driving device 276 and line are kept Device 271, supporting support 273 are fixedly connected on the outside of head, and loose ends driving device 276 uses solenoid actuated mode, The driving end of pipeline purging driving device 266 is located on the first side, and supporting support 273 is provided in the opposite second side in driving end Limited post 277, rotatable parts 274 are arranged in supporting support 273 and are located on the side at driving end, and rotatable parts 274 include fixing Portion and rotation section, along being vertically arranged, the driving end of loose ends driving device 276 and the first end of rotation section pass through the shaft of rotation section Connecting rod 275 is hinged, and the linear drives using the driving end of loose ends driving device 276 are mobile, then drives turning for rotatable parts 274 Dynamic, the second end 272 of rotation section is fixedly connected with the upper end of line holding meanss 271 and line holding meanss 271 can be driven to rotate It is dynamic to rotate in the horizontal plane, the setting in the shape of a rod of line holding meanss 271, and coil is set in lower end, coil is for enclosing upper thread And upper thread can be stirred and torn in the horizontal direction, line holding meanss 271 are located at the top of hook device 262.

Thread-loosening device 27 further includes wire installation 28, and wire installation 28 is fixed at the top of eedle, wire installation 28 Positioned at the top of hook device 262, wire installation 28 is provided with the guide portion 281 for guiding upper thread.

The step of section line, is illustrated below.It is referring to figure 5 and figure 6 and in conjunction with 4, Fig. 5 showing under non-dissengaged positions It is intended to, Fig. 6 is turned off the schematic diagram under state.

First the arrangement of upper thread is illustrated first, upper thread is then successively kept by line after the pull-out of wire installation 28 Device 271, the wire guide of eedle, eedle 114, and sewing process is carried out under the reciprocating of eedle 114.

When needing to cut off upper thread, line holding meanss 271 are rotated first, and upper thread is pullled out a distance, subsequent clamp Device 13 clamps upper thread, and eedle 114 is in lifting position at this time, and then pipeline purging bracket 261 moves in the horizontal direction, and upper thread is hooked Firmly mobile towards wire-clamping device 22, subsequent wire-clamping device 22 clamps upper thread, and continues to move to pipeline purging bracket 261, upper thread meeting It contacts with hot knife 25, and is cut by hot knife 25, and the end for cutting off rear wires is continued to clamp by wire-clamping device 22.

Referring to Fig. 7 to Fig. 9, sewing machine is additionally provided with rotating shuttle 121, rotating shuttle transmission shaft and driving motor in the bottom of base, Rotating shuttle transmission shaft is connected between rotating shuttle 121 and driving motor, and rotating shuttle transmission shaft is at horizontally disposed, in the top cloth of rotating shuttle 121 It is equipped with needle plate 31 and feed dog 32, feed dog 32 is located at the lower section of needle plate 31, and the lower inner surface of feed dog 32 is the arc of indent Face.

Cutting baseline device 3 includes bracket, hook device 36, hot knife 37 and thread-cutting driving device 35, and bracket includes rotation Bracket 33 and bearing support 34, bearing support 34 are arranged below the needle position of needle plate 31 in bending sheet setting, bearing support 34 Have the first arm 341 and the second arm 342, the first arm 341 and the second arm 342 in separately positioned, the first arm 341 and the second arm 342 it Between angle at an acute angle setting, hook device 36 is arranged on the end of the first arm 341, and the second arm 342 is arranged in hot knife 37 On end, hot knife 37 and hook device 36 are circumferentially arranged on bracket along same, and hook device 36 is located at bearing support 34 The front of rotation direction, hot knife 37 are located at middle part, and hook device 36 and bearing support 34 are integrally formed, and hook device 36 is in recessed Slot setting, has lead distance in the circumferential between hook device 36 and hot knife 37.

Rotating bracket 33 is provided with center articulated section 331, eccentric articulated section 332 and interconnecting piece 333, center articulated section 331 Positioned at center, eccentric articulated section 332 and interconnecting piece 333 are located at eccentric setting, the interconnecting piece 333 and bearing support of rotating bracket 33 34 are fixedly connected.Solenoid actuated mode, the driving end of thread-cutting driving device 35 and bias can also be used in thread-cutting driving device 35 Articulated section 332 is hinged, and the driving end of thread-cutting driving device 35 can be moved along linear expansion.

And center articulated section 331 is provided with hollow location hole, transmission shaft passes through location hole, and bracket is rotated around transmission shaft, Bracket is supported by transmission shaft, then hot knife 37 and hook device 36 are centrally located 331 periphery of articulated section and around centers Articulated section 331 rotates, and due to the curved arrangement of bearing support 34, therefore it can be rotated in the outside of rotating shuttle, and hot knife 37 Can be in arc rotation in surface, i.e., from top to bottom with hook device 36, needle plate, feed dog, hook device 36, hot knife 37 and rotation Shuttle is set gradually.

0 and Figure 11 referring to Fig.1, Figure 10 are the state that do not cut off, the state that Figure 11 is turned off, the application method packet of sewing machine Include, when sewing finishes, and hook device 36 and hot knife 37 at this time is respectively positioned on the same side of needle position, need to baseline into When row cutting, thread-cutting driving device driving arm rotates on vertical plane, and hook device 36 turns to needle position and catches on baseline, and Baseline pulls out one section of lead distance, and subsequent hot knife 37 turns on needle position, and then hot knife 37 cuts off baseline.

Referring to Fig.1 2, the control method of sewing machine is illustrated below, and to realizing that upper thread the end of a thread is short, and the end of a thread position In the bottom side of cloth, guarantee design on fabric surface beauty without the end of a thread.It should be noted that the direction of routing of cloth and hooking direction are actually Vertical, it tells about and indicates for convenience, always shown in figure with two-dimensional square.

The control method of sewing machine includes section line step and cuts baseline step, and section line step includes:

Firstly, seeing Figure 12 (a) and combining Fig. 5 and Fig. 6, upper thread passes through thread-loosening device 271, wire installation 28 and eedle 114, and in the case where eedle back and forth operates, realize sewing；

Then, see Figure 12 (b), after triggering corresponding tangent line enabling signal, the corresponding close joint step of sewing machine progress (according to It needs, can not also close joint), then thread-loosening device 271 rotates, and pulls the distance of one section of upper thread, subsequent hook device 262 is horizontally It is mobile towards wire-clamping device 22, and upper thread is caught on, clamp upper thread by wire-clamping device 22, meanwhile, baseline is pullled by upper thread to quilt The upper surface of sewing object 10；

Then, see Figure 12 (c), as hook device 262 is further moved to bottom, upper thread is then by hot knife 25 Cutting, and the upper thread end being located on sewing machine is gripped by wire-clamping device 22, and the upper thread end still position on cloth at this time In the outer surface of cloth；

Finally, seeing Figure 12 (d), under holder pivots, hook device 36 first catches on baseline B and drives baseline B one section mobile Lead distance, then, hot knife 37 turn to needle position, can then cut off to baseline B.Under the induced effect of baseline B, quilt The end upper thread F in sewing object 10 is brought to the inside (or even on bottom side) of sewn object 10.Therefore, the end and bottom of upper thread F The end of line B is that the surface of sewn object 10 guarantees aesthetics not in the upside of sewn object 10.

Need exist for illustrating realizing the condition that the cutting of short-term head is realized, be first upper thread F hot knife and baseline B it is fervent Knife may be provided at close to needle position place, and then the end of a thread after realization cutting is shorter, not need manually to repair line again.

Too short the end of a thread will cause run-bake-needle fault to sewing next time, be embodied in upper thread F off-line and the bottom of rotating shuttle of eedle Line B off-line, therefore the solution of this case is:

In terms of the baseline B of face, setting hook device 36 pulls certain distance, can then realize thread-off prevention line, and can guarantee baseline When playing seam next time, the end of a thread is not grown；

In terms of upper thread F, rotation of the thread-loosening device 271 relative to wire installation 28 is set, pulls upper thread a distance, simultaneously Setting line stripper also pulls upper thread a distance, this two sections of distances can be adjusted separately according to the difference of sewing tech.It utilizes The length of this two sections of lines pulled out enough plays seam just and uses, and the pine clamped using wire-clamping device 22 to the end upper thread F Tightness, speed when seam is played in conjunction with sewing machine, not only guarantee upper thread F will not run-bake-needle fault, while realizing anti-Bird's Nest function.

For anti-Bird's Nest function, it is illustrated by Figure 13, when sewing another sewn object 10 and starting, referring to Fig.1 3 (a), the end of upper thread F is clamped by wire-clamping device 22, and upper thread F passes through the pin hole of eedle, then, referring to Fig.1 3 (b), eedle Knit stitch carries out the first needle of sewing, and the end of upper thread F is also clamped by wire-clamping device 22 at this time, referring finally to Figure 13 (c), sewing After several needles, the end of upper thread F is pullled and is detached from the clamping of wire-clamping device 22, and finally, playing upper thread at seam has a end of a thread, but not There are Bird's Nest phenomenons.

If the speed when clamp power of wire-clamping device 22 being turned down, and sewing machine being combined to play seam, then the first needle mistake is being sewed The end of Cheng Zhong, upper thread F are disengaged out of wire-clamping device 22, then an extremely short the end of a thread can be stayed below cloth by playing seam upper thread, and There is no Bird's Nests.

Mainly by the end of a thread clamping of spring, reasonable clamp elasticity, sewing machine is risen when stitching for above-mentioned function realization The bracing wire length of speed and thread-loosening device and line stripper.

Sewing machine second embodiment:

Second embodiment mainly improves section line apparatus 4, and referring to Fig.1 4 to Figure 16, section line apparatus 4 includes Thread cutter, thread-loosening device, line stripper and bracket 41, bracket 41 is arranged on the side of sewing machine, in above-described embodiment Thread-loosening device is arranged on the bracket 41.

Line stripper is arranged on bracket 41, and line stripper includes pipeline purging driving device 43, pipeline purging bracket 421, rotation branch Frame 423, connecting bracket 424, swinging mounting 425, limiting bracket 426, mounting bracket 441 and limited post 444, mounting bracket 441 In being horizontally mounted on bracket 41, bracket 41 is provided with overhanging articulated section 411 in downside, and pipeline purging driving device 43 is one Rotating electromagnet is arranged in mounting bracket 441, and Horizontal limiting slot 442 is arranged in mounting bracket 441, and limited post 444 is set along level It sets and is movably disposed in mounting bracket 441, limited post 444 is located on one end of limiting slot 442.

Swinging mounting 425 is connect with pipeline purging driving device 43, and pipeline purging driving device 43 drives swinging mounting 425 to rotate, limit Position bracket 426 is fixed on swinging mounting 425, and card division is arranged in limiting bracket 426 on limiting slot 442, and card division can be with limiting slot 442 two sidewalls are adjacent, and can also connect with limited post 444, by adjusting the flexible of limited post 444, then realize to pendulum The limit up and down of the amplitude of fluctuation of dynamic bracket 425 is adjusted.

Swinging mounting 425, connecting bracket 424, rotating bracket 423 and pipeline purging bracket 421 are sequentially connected, rotating bracket 423 Middle part and articulated section 411 it is hinged, the end of connecting bracket 424 and one end of rotating bracket 423 are hinged, pipeline purging bracket 421 Upper end and rotating bracket 423 are hinged, then realize that pipeline purging bracket 421 rotates in the horizontal direction around rotating bracket 423, pipeline purging The hook device 422 of bracket 421 is by the top of needle position and mobile towards wire-clamping device, can effectively be increased by way of rotation Add pipeline purging distance.

Thread cutter includes tangent line bracket 441, wire-clamping device 443, screw 44 and hot knife 445, and tangent line bracket 441 is arranged There is long slot hole and be fixedly connected by screw with fabric clamp, the setting of long slot hole can adjust the position of tangent line bracket 441.Tangent line Bracket 441 is provided with hole 442 above needle position, through slot is additionally provided on the radial peripheral wall in hole 442, the bottom wall of through slot is at inclination Setting, wire-clamping device 443 use spring, and spring is arranged in hole 442 and exposes at through slot position so as to clamp, and screw 44 passes through Hole 442 is simultaneously threadedly engaged with hole 442, and the inner end of screw 44 is abutted with spring, then realizes the telescopic adjustment of spring.Hot knife 445 are arranged in the lower section of spring.

Upper thread is caught on and level is wanted to pull to spring by hook device 422, can be cut by hot knife 445 after spring clamping It cuts, and the end of upper thread is by spring clamping.

Sewing machine 3rd embodiment:

Sewing machine 3rd embodiment is mainly improved to cutting baseline device 5, is cut baseline device 5 and is included bracket, swings branch Frame 52, connecting bracket 54 and rotating electromagnet 51, bracket include rotating bracket 55 and bearing support 56, and rotating bracket and carrying are propped up Frame and above-described embodiment it is identical, rotating electromagnet 51 drives swinging mounting 52 to rotate, and connecting bracket 54 is hinged on swinging mounting Between 52 and rotating bracket 55, positioning column 53 is additionally provided on the side of swinging mounting 52, positioning column 53 is used for swing branch Frame 52 plays position-limiting action.

Sewing machine fourth embodiment:

Sewing machine fourth embodiment is mainly improved to cutting bearing support 61 in baseline device 6, bearing support 61 with turn Dynamic bracket connection, for bearing support 61 in bending sheet setting, the end of bearing support 61 is provided with hook device 611, carrying branch Live wire holding tank 612 is arranged in frame 61 in the same circumferential direction of hook device 611, fills in electric wire holding tank 612 and hooking It sets and is provided with bracket 613 between 611, hot knife is arranged on bracket 613.

In addition, for thread-clamping device other than using spring to clamp line, moreover it is possible to be pressed from both sides using elastic slice to line It holds or wire clamp, the wire casing of rational width etc., these can be realized the clamping to upper thread, and for driving device, this Case embodiment is all made of solenoid actuated, naturally also can using servo motor, stepper motor, stepper motor, surge or gas Flowing mode is driven, and the purpose of this utility model can be realized in above-mentioned change, also in the protection scope of the utility model Within.

Therefore using the thread cutter that can be fixed at by fabric clamp, and moved using in line stripper Hook device, hook device catches on upper thread and keeps upper thread mobile towards wire-clamping device, and upper thread, can after being clamped by wire-clamping device By be located at wire-clamping device below hot knife cutting, not only realize the end of a thread it is shorter, do not need it is secondary repair line, moreover, because upper thread End it is clamped, even if therefore the upper thread that retains at eedle is shorter will not lead to run-bake-needle fault, therefore can realize prevents when eedle opens seam Bird's Nest generates.Upper thread is clamped by spring, and the dilatability of spring can be adjusted by screw and block, is made Obtaining spring can adapt to the wire rod of different thicknesses.The connection of through slot is arranged, and is to provide through slot for the cabling of upper thread, so that upper thread quilt It can successfully be cut by hot knife after clamping.Thread-loosening device is used to adjust upper thread elasticity and the length above eedle, not only It is beneficial to prevent upper thread run-bake-needle fault, and can further prevent the generation of Bird's Nest.By rotating the setting of bracing wire, pine can be made The distance of line further improves, and for different materials and with the wire rod of different elasticities, is set by the loose ends of big distance Meter, can be suitable for a variety of wire rods.

In addition, for cutting baseline device, by the setting of rotating bracket, and using cutter and hook device along same circumferential direction It is arranged on bracket, so that hook device catches on baseline and pulls out one section of lead distance, is then cut off by cutter.Wherein, cutter can To be hot knife, it is also possible to universal cutter, ultrasonic wave cutter, microwave cutter etc..If such as use hot knife, can also Enough ends to the end of a thread carry out hot melt adhesive, prevent the end of a thread end bifurcated.Cutter and hook device it is separately positioned, and utilize the Setting at an acute angle between one arm and the second arm, therefore cutter and hook device are located in same circumferential direction, can not only make to cut off baseline Afterwards, the baseline of lucky length is reserved to sewing next time and to play suture head short, and cutter is without impinging on needle plate, to the greatest extent It measures close to needle plate, keeps the tangent line effect of baseline the end of a thread shorter.Due to being provided with rotating shuttle below needle plate and feed dog, therefore cut Baseline device, which needs to be arranged, evades setting accordingly, thus below feed dog setting indent arcwall face so that the bracket rotated, cutting Knife and hook device are arc rotation in surface, effectively avoid rotating shuttle, make full use of the confined space.Center articulated section can be used for It is cooperatively connected with the drive shaft of rotating shuttle, support can be provided for bracket, and rotate setting can dexterously utilize space, evacuation rotation Shuttle does not influence the device layout of normal sewing machine.

Claims (9)

1. section line apparatus characterized by comprising

Thread cutter, the thread cutter include tangent line bracket, wire-clamping device and cutter, and the wire-clamping device and the cutter are equal It is arranged on tangent line bracket, the wire-clamping device is located at the top of the cutter；

Line stripper, the line stripper include pipeline purging driving device and pipeline purging bracket, and the pipeline purging bracket is arranged in lower end There is hook device, the pipeline purging driving device drives the pipeline purging bracket to move in the horizontal direction, and the hook device is described It the top of wire-clamping device simultaneously can be mobile towards the wire-clamping device.

2. section line apparatus according to claim 1, it is characterised in that:

The wire-clamping device is spring, and the spring is transversely disposed on the tangent line bracket.

3. section line apparatus according to claim 2, it is characterised in that:

It is provided with hole on the tangent line bracket, through slot is provided on the radial peripheral wall in the hole, the spring is arranged in the hole It is interior.

4. section line apparatus according to claim 3, it is characterised in that:

The tangent line bracket is provided with mounting groove below the hole, and the cutter is arranged in the mounting groove, the peace Tankage is connected to the through slot.

5. section line apparatus according to claim 1, it is characterised in that:

The pipeline purging driving device and the pipeline purging bracket are hinged, and the pipeline purging driving device drives the pipeline purging bracket in level Face rotation.

6. section line apparatus according to any one of claims 1 to 5, it is characterised in that:

The section line apparatus includes thread-loosening device, and the thread-loosening device includes loose ends driving device and line holding meanss, described Line holding meanss are located at the top of the hook device, and the loose ends driving device drives the line holding meanss in the horizontal direction It is mobile.

7. section line apparatus according to claim 6, it is characterised in that:

The driving end of the line holding meanss and the loose ends driving device is hinged, and the loose ends driving device drives the line to protect Device is held to rotate in the horizontal direction.

8. sewing machine, including fabric clamp, eedle and section line apparatus, the eedle in the needle position of the fabric clamp for back and forth moving It is dynamic, which is characterized in that the section line apparatus uses the described in any item section line apparatus of the claims 1 to 7；

The tangent line bracket is fixedly connected on the fabric clamp, and the cutter and the wire-clamping device are respectively positioned on the needle position On the same side, the hook device is movable to the top of the needle position.

9. sewing machine according to claim 8, it is characterised in that:

The section line apparatus includes thread-loosening device, and the thread-loosening device includes wire installation, the wire installation fixed setting On the top of the eedle, the wire installation is provided with the guide portion for guiding upper thread.