CN2799611Y

CN2799611Y - Thread hooking and clamping device for sewing machine

Info

Publication number: CN2799611Y
Application number: CN 200520109106
Authority: CN
Inventors: 顾飞龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-24
Filing date: 2005-05-24
Publication date: 2006-07-26
Anticipated expiration: 2015-05-24

Abstract

The utility model relates to a thread hooking and clamping device for a sewing machine. The thread hooking and clamping device is adjacently arranged on a sewing needle of a sewing machine, and a main seat body is provided with a drive element; an oscillating arm of the drive element drives a linking part to make a thread hooking element locked on the linking part displace and move between a guide seat and an upper guide sheet and to make the hook part of the thread hooking element be capable of making a sewing thread on the sewing needle gathered and clamped in a clamping sheet between the guide seat and the upper guide seat; in addition, the clamping sheet can penetrate through the guide seat through the pressure rod part of a pressure rod seat fixedly locked on the guide seat to press and butt on the clamping sheet to adjust the clamping tightness. Accordingly, the shortest clamping is formed by the hooking and clamping device and is properly tensed, a sewing thread end having the maximum remaining thread is pre-left for a net thread to thread and sew in the next action, and blank sewing can not be caused.

Description

The tension device of Sewing machines

Technical field

The tension device of the relevant a kind of Sewing machines of the utility model, especially the device that colludes the folder thread that refers to a kind of auxiliary Sewing machines of can upper and lowerly knotting, be provided with the moving part that colludes kind of thread elements with the driving group, make and collude kind of thread elements and collude in the intermediate plate between supreme guide card of the suture of picking up the car and guide bracket, reach the spacing thread of clamping in order to the sewing of knotting.

Background technology

General being seen sewing machine (shown in Figure 10 to 12), needle stand in upper and lower start sewing is installed with three car pins 71 for 7 times to wear thread 711, like this can sewing as shown in figure 13 following knotting and on have the sewing type (promptly being commonly called as chain stitch) of three road sewings; And for making operation reach automation more fast, can be below workbench group be provided with down thread cutting device 75 and three threads 711 can be reached by automatic tangent do not need again the manually purpose of trimming when sewing finishes.In addition 712 groups in the upright hole of the group of (as shown in figure 11) is provided with " Sewing machines collude line apparatus " of utility model people in early stage utility model above needle stand 7, (announcing its notification number on September 21st, 85 is 286691 TaiWan, China patent) is promptly shown in Figure 14,15, should on to collude line apparatus 74 are the end of a thread 710 that will be cut off by following thread cutting device 75 gives clamping and collude and pull to collude sheet 741 and reed 742, make to be beneficial to when sewing next time this residual the end of a thread 710 is given sewing to cover, making on the cloth cover of a large amount of processing does not have residual the end of a thread fully at sewing.

Though but should on collude line apparatus 74 and can make next time that sewing does not have residual the end of a thread, so still have slight disappearance in the use, because of on when colluding the colluding sheet 741 and utilize its reed 742 to clamp cut thread 711 of line apparatus 74, have suitable distance (L as shown in figure 15) from car pin 71, remaining the end of a thread 710 is also in only surplus 4～5 millimeter of bare terminal end; When car pin 71 downwards the puncture clothes do down when knotting, the clamping that remaining the end of a thread 710 can very fast disengaging bare terminal end and dropping naturally, when causing sewing, colluding with device and can't collude with shaping and cause three～four pins under the workbench, even the empty needle sewing result more than four pins.

Utility model.

The utility model content

The purpose of this utility model provides a kind of tension device of Sewing machines, produces empty needle sewing shortcoming when avoiding sewing.

The tension device of Sewing machines of the present utility model, it is adjacent to sewing locomotive pin place, by a main base frame that is provided with driving element, be provided with the moving part that colludes kind of thread elements, first contiguous block, second contiguous block, lead frame and clamp group are formed, be characterized in: this main base frame is provided with to be worn groove and sets firmly a driving element, and rotating shaft place of driving element winding one swing arm, swing arm is provided with a guide groove, and be respectively equipped with lockhole and fixing hole in main base frame central authorities appropriate position, with difference corresponding assembling first contiguous block and spacing button, main base frame one end protrudes out group connecting part again, and group connecting part is established lockhole and set firmly the clamp group; This moving part is provided with chute, can corresponding be mounted on spacing button on the main base frame fixing hole and slide displacement, moving part is provided with a lockhole with to the slide block that locks again, and make slide block be positioned at the guide groove of driving element swing arm, in addition moving part one end group is provided with and colludes kind of thread elements, and colludes and have a bending hook part on the kind of thread elements; This first contiguous block is corresponding to lock at the lockhole place of main base frame, and also is provided with the corresponding locking of lockhole second contiguous block in the other end; This second contiguous block, one end and first contiguous block locking, and the other end is provided with the corresponding group of lockhole and establishes lead frame, and the lockhole top is provided with and wears groove, wears the groove tension device whereby to be locked on the Sewing machines; This lead frame correspondence is assembled in the lockhole place of second contiguous block, and end extension connects group one arc guide part, and corresponding importing the in arc guide part gone up netting twine; This clamp group is mounted on the guide bracket at main base frame group connecting part lockhole place by a correspondence, last guide card, intermediate plate and depression bar seat constitute, sheet is supported toward interior extension one in perpendicular end surface bottom in guide bracket, be provided with limited impression and support the sheet front end, in addition equally obliquely be provided with one group and establish end toward interior in a side of the perpendicular end surface central authorities of guide bracket, group is established end and is provided with the upright hole of group, wear the upright hole of group to establish part by spiral shell, the perforation of intermediate plate, and go up guide card and bore a hole, and the intermediate plate and have the last guide card of limited impression of locking, and between intermediate plate and the last guide card with spacer block as separating that group is established, and the other end that corresponding guide bracket perpendicular end surface group is established end outwards is provided with bending end, and bending end is provided with screw, with can be to establish a spiral shell spare with spiral shell, be respectively equipped with lockhole and wear groove on the guide bracket perpendicular end surface in addition, make the lockhole correspondence have the depression bar seat locking of lockhole, and a depression bar is extended in turnover on the depression bar seat, and depression bar wore to be worn groove and be pressed against on the intermediate plate, and the degree of depth that is screwed into of being located at the spiral shell spare at bending end screw place by spiral shell is adjusted the pull clamping elasticity of intermediate plate of depression bar top.

Because main base frame is provided with driving element, make the swing arm of driving element drive moving part, what moving part is locked establish colludes kind of thread elements displacement activity between guide bracket and last guide card, and the hook part of colluding kind of thread elements can be concluded the thread at car pin place to press from both sides in the intermediate plate of pulling between guide bracket and last guide card, the depression bar portion of the intermediate plate depression bar seat that can be locked on the guide bracket in addition wore guide bracket and is pressed against and adjusts the folder degree of tightness of pulling on the intermediate plate; Whereby, utilize tension device to form the shortest clamping and appropriateness tension and thread the end of a thread of reserving Dayu line is worn the knot sewing for what netting twine was done next action, can not cause blank sewing.

Description of drawings

Fig. 1 is an assembling schematic diagram of the present utility model;

Fig. 2 is a decomposing schematic representation of the present utility model;

Fig. 3 is a front elevational schematic of the present utility model;

Fig. 4 is that clamp component of the present utility model is separated schematic diagram;

Fig. 5 is the action diagram of facing of the present utility model;

Fig. 6 is a local schematic rear view of the present utility model;

Fig. 7 is a backsight action diagram of the present utility model;

Fig. 8 is that intermediate plate of the present utility model is adjusted schematic diagram ();

Fig. 9 is that intermediate plate of the present utility model is adjusted schematic diagram (two);

Figure 10 is the schematic perspective view of commonly using;

Figure 11 is the three-dimensional enlarged diagram of commonly using of part;

Figure 12 is the part front-view schematic diagram of commonly using;

Figure 13 is that the sewing of commonly using has the schematic diagram of knotting down;

Figure 14 is the schematic diagram of commonly using () that colludes line apparatus that adds;

Figure 15 is the schematic diagram of commonly using (two) that colludes line apparatus that adds.

The specific embodiment

And be make technology contents of the present utility model, utility model purpose and the effect that can reach can be more complete, clearly disclose, below in conjunction with accompanying drawing preferred embodiment of the present utility model is elaborated:

At first, see also shown in Fig. 1,2, it is the tension device assembling and the decomposing schematic representation of the utility model Sewing machines, this tension device A is adjacent to the car pin B1 place of Sewing machines B, and extremely near car pin B1, its mainly by a main base frame 1 that is provided with driving element 11, be provided with moving part 2, first contiguous block 3, second contiguous block 4, lead frame 5 and the clamp group 6 of colluding kind of thread elements 24 and formed, wherein:

Please consult Fig. 2,3 again, this main base frame 1 is provided with to be worn groove 10 and sets firmly a driving element 11, and rotating shaft place winding one swing arm 12 of driving element 11, swing arm 12 is provided with a guide groove 121, and be respectively equipped with lockhole 13 and fixing hole 14 in main base frame 1 central appropriate position, with the corresponding assembling of difference first contiguous block 3 and spacing 15, and spacing button 15 wears moving part 2 and is locked in the fixing hole 14 of main base frame 1, main base frame 1 one ends protrude out group connecting part 16 again, and group connecting part 16 is established lockhole 161 and set firmly clamp group 6.

This moving part 2 is provided with chute 21, can correspondingly wear for spacing button 15, and be mounted on main base frame 1 fixing hole 14, simultaneously can make its spacing button 15 slide displacement in chute 21, moving part 2 is provided with a lockhole 22 with to the slide block 23 that locks again, and make slide block 23 be positioned at the guide groove 121 of driving element 11 swing arms 12, moving part 2 one end groups are provided with and collude kind of thread elements 24 in addition, and collude and have a bending hook part 241 on the kind of thread elements 24.

These first contiguous block, 3 correspondences lock at lockhole 13 places of main base frame 1, and also are provided with lockhole 31 corresponding locking second contiguous blocks 4 in the other end.

These second contiguous block, 4 one ends and the locking of first contiguous block 3, and the other end is provided with lockhole 41 corresponding groups and establishes a lead frame 5, and lockhole 41 tops are provided with and wear groove 42, can wear groove 42 whereby, go up (as shown in Figure 1) and tension device A is locked in Sewing machines B.

These lead frame 5 correspondences are assembled in lockhole 41 places of second contiguous block 4, and an end extends winding one arc guide part 51, and arc guide part 51 can correspondingly import and go up netting twine.

Please cooperate and consult Fig. 3, shown in 4, this clamp group 6 mainly is mounted on the guide bracket 61 at main base frame 1 group connecting part 16 lockholes 161 places by a correspondence,

last guide card

62,64 formations of intermediate plate 63 and depression bar seat, sheet 611 is supported toward interior extension one in its perpendicular end surface bottom in guide bracket 61, be provided with limited impression 6110 and support sheet 611 front ends, in addition equally obliquely be provided with one group and establish end 612 toward interior in a side of the perpendicular end surface central authorities of guide bracket 61, group is established end 612 and is provided with the upright hole 6120 of group, wear the upright hole 6120 of group establishing part 65 by spiral shell, the perforation 631 of intermediate plate 63, and go up guide card 62 and bore a hole 621, and locking intermediate plate 63 and have the last guide card 62 of limited impression 622, and between intermediate plate 63 and the last guide card 62 with spacer block 66 as separating that group is established, and corresponding guide bracket 61 perpendicular end surface groups are established end 612 the other end and outwards are provided with bending end 613, and bending end 613 is provided with screw 6130, establishing a spiral shell spare 67 by corresponding spiral shell, be respectively equipped with lockhole 614 and wear groove 615 on guide bracket 61 perpendicular end surface in addition, make depression bar seat 64 lockings of lockhole 614 corresponding tool lockholes 641, and a depression bar 642 is extended in turnover on the depression bar seat 64, depression bar 642 was worn wear groove 615 and be pressed against on the intermediate plate 63, and can adjust the pull clamping elasticity person of intermediate plate 63 of depression bar 642 tops by the degree of depth that is screwed into that spiral shell is located at the spiral shell spare 67 at bending end 613 screws 6130 places.

During assembling, see also Fig. 3, shown in 5, the corresponding group in groove 10 places of wearing in main base frame 1 is gone into driving element 11, simultaneously, make the corresponding lockhole 22 corresponding lockings that embed slide blocks 23 and slide block 23 and moving part 2 of the guide groove 121 of driving element 11 top links 12, and wear the chute 21 of moving part 2 with spacing button 15 correspondences again and be mounted in the fixing hole 14 of main base frame 1 this moment, first contiguous block 3 is lockhole 13 lockings corresponding and main base frame 1 in addition, and second contiguous block 4 of the corresponding locking in lockhole 31 places of first contiguous block 3 simultaneously, the lockhole 41 of lead frame then corresponding second contiguous block 45 this moment and fixing.Be based on guide bracket 61 in the clamp group 6 in addition, spiral shell is established the upright hole 6120 of group that group that part 65 passes guide bracket 61 is established end 612, again in regular turn with intermediate plate 63, spacer block 66, last guide card 62 correspondences penetrate locking, then, with the lockhole 614 of the lockhole 641 corresponding guide brackets 61 of depression bar seat 64 and lock is established fixing, penetrate with the depression bar 642 of seasonal depression bar seat 64 the groove 615 of wearing by guide bracket 61, and be butted on intermediate plate 63, then lock a spiral shell spare 67 in screw 6130 places of the bending end 613 of guide bracket 61 again, and spiral shell spare can support and pull at depression bar 642 places of depression bar seat 64, lockhole 161 on the group connecting part 16 of continuous guide bracket 61 is corresponding and this pedestal 1 and locking location, at last, the groove 42 of wearing on second contiguous block 4 of whole tension device A is assembled corresponding to Sewing machines, and extremely promptly finished assembling (as shown in Figure 1) near the syringe needle place of car pin B1 with seasonal clamp group 6.

During start, please continue to cooperate and consult Fig. 3, shown in 5 to 7, be tension device A to be locked on the Sewing machines B by second the wearing groove 42 of contiguous block 4, when the sewing action stops, driving element 11 among the tension device A is done command of execution swing arm 12 and is driven moving part 2, and the chute 21 that makes moving part 2 slide on the fixing hole 14 of main base frame 1 lock the spacing button of establishing 15, and be subjected to the stroke of spacing button 15 limit slippage, and advance and collude kind of thread elements 24 relatively also together with forward impelling when moving part 2 displacements, make the former kind of thread elements 24 of colluding of supporting between sheet 611 and the intermediate plate 63 support intermediate plate 63 forward and reach guide card 62 at clamp group 6 guide brackets 61, advance to car pin place in colluding kind of thread elements 24, the bending hook part 241 that kind of thread elements 24 front ends are colluded in utilization stops sewing and the thread that cuts off colludes and gets, in swing arm 12 swing backward then drive moving part 2 make the bending hook part 241 that colludes kind of thread elements 24 with thread along entering by supporting between sheet 611 and the last guide card 62 of guide bracket 61, simultaneously by supporting the limited impression 6110 of sheet 611 with last guide card 62 front ends, 622 do not break away from several strands of threads are spacing, and after retraction is supported sheet 611 and gone up between the guide card 62 in colluding kind of thread elements 24, its thread be along by the intermediate plate 63 of last guide card 62 belows with its clamping, thread is fixed at this, when next sewing action, netting twine is gone up in 5 importings of cooperation lead frame and thread is knotted, its thread has suitable length because of being subjected to intermediate plate 63 clampings, can produce in the situation that does not have off-line of can knotting of pin once.

When aforementioned whole tension device A is mounted on the Sewing machines, be make tension device A clamp group 6 extremely near the syringe needle place of car pin B1, it mainly is the distance that shortens between car pin 31 and the clamp group 6, make to be located in and collude kind of thread elements 24 in the clamp group 6, can collude the thread of getting a suitable length and be held on guide bracket 61 between sheet 611 and intermediate plate 63, when in next pin down during sewing, its car pin B1 pulls down start of thread, because of clamp group 6 extremely near car pin B1, form distance weak point herein, the length along path of the relative clamping of reserving, like this, can make that the thread of intermediate plate 63 place clampings is enough drop-down knots smoothly with the workbench device of colluding with down, make the sewing action can when first sewing machine stitches, get final product smooth and easy cycling start, and can not cause the situation product survivor of empty needle sewing.

Please consult shown in Fig. 8,9 again, the spiral shell spare 67 that bending end 613 screws 6130 places are screwed at clamp group 6 guide brackets 61 carries out degree of tightness when adjusting, it can be to the depression bar seat 64 that spiral shell spare 67 the is supported adjustment of exerting pressure, with the degree of tightness of borrowing spiral shell spare 67 to support the depression bar 642 of pulling, reflect the degree of tightness that depression bar 642 presses intermediate plate 63, to reach the DE person who adjusts intermediate plate 63 clamping threads.

Claims

1. the tension device of a Sewing machines, it is adjacent to the car pin place of Sewing machines, by a main base frame that is provided with driving element, be provided with moving part, first contiguous block, second contiguous block, lead frame and the clamp group of colluding kind of thread elements and formed, it is characterized in that:

This main base frame is provided with to be worn groove and sets firmly a driving element, and rotating shaft place of driving element winding one swing arm, swing arm is provided with a guide groove, and be respectively equipped with lockhole and fixing hole in main base frame central authorities appropriate position, with difference corresponding assembling first contiguous block and spacing button, main base frame one end protrudes out group connecting part again, and group connecting part is established lockhole and set firmly the clamp group;

This moving part is provided with chute, can corresponding be mounted on spacing button on the main base frame fixing hole and slide displacement, moving part is provided with a lockhole with to the slide block that locks again, and make slide block be positioned at the guide groove of driving element swing arm, in addition moving part one end group is provided with and colludes kind of thread elements, and colludes and have a bending hook part on the kind of thread elements;

This first contiguous block is corresponding to lock at the lockhole place of main base frame, and also is provided with the corresponding locking of lockhole second contiguous block in the other end;

This second contiguous block, one end and first contiguous block locking, and the other end is provided with the corresponding group of lockhole and establishes lead frame, and the lockhole top is provided with and wears groove, wears the groove tension device whereby to be locked on the Sewing machines;

This lead frame correspondence is assembled in the lockhole place of second contiguous block, and end extension connects group one arc guide part, and corresponding importing the in arc guide part gone up netting twine;

This clamp group is mounted on the guide bracket at main base frame group connecting part lockhole place by a correspondence, last guide card, intermediate plate and depression bar seat constitute, sheet is supported toward interior extension one in perpendicular end surface bottom in guide bracket, be provided with limited impression and support the sheet front end, in addition equally obliquely be provided with one group and establish end toward interior in a side of the perpendicular end surface central authorities of guide bracket, group is established end and is provided with the upright hole of group, wear the upright hole of group to establish part by spiral shell, the perforation of intermediate plate, and go up guide card and bore a hole, and the intermediate plate and have the last guide card of limited impression of locking, and between intermediate plate and the last guide card with spacer block as separating that group is established, and the other end that corresponding guide bracket perpendicular end surface group is established end outwards is provided with bending end, and bending end is provided with screw, with can be to establish a spiral shell spare with spiral shell, be respectively equipped with lockhole and wear groove on the guide bracket perpendicular end surface in addition, the lockhole correspondence has the depression bar seat locking of lockhole, and a depression bar is extended in turnover on the depression bar seat, and depression bar wore to be worn groove and be pressed against on the intermediate plate, and the degree of depth that is screwed into of being located at the spiral shell spare at bending end screw place by spiral shell is adjusted the pull clamping elasticity of intermediate plate of depression bar top.

2. the tension device of Sewing machines as claimed in claim 1, it is characterized in that, this tension device is adjacent to the car pin place of Sewing machines, the clamp group of tension device extremely is provided with near car pin place, to shorten the distance between car pin and the clamp group, be located in the kind of thread elements of colluding in the clamp group, can collude the thread of getting a suitable length and be held on guide bracket between sheet and intermediate plate, when in next pin down during sewing, its car pin pulls down start of thread, because of the clamp group extremely near the car pin, form that distance is short herein, relatively the length along path of the clamping of reserving.