本技術涉及縫紉(ren)機，特別是涉及一種防(fang)鳥巢雙活動(dong)刀(dao)剪線機構(gou)、以(yi)及包含有(you)該防(fang)鳥巢雙活動(dong)刀(dao)剪線機構(gou)的縫紉(ren)機。

背景技術：

1、縫(feng)紉(ren)機是用一(yi)根或(huo)多根縫(feng)紉(ren)線，在布料上形成(cheng)一(yi)種(zhong)或(huo)多種(zhong)線跡，使一(yi)層或(huo)多層縫(feng)料交織或(huo)縫(feng)合(he)(he)(he)起來(lai)的機器(qi)。縫(feng)紉(ren)機通常由送(song)料裝置、基座、傳動和附(fu)件(jian)四(si)部分組(zu)成(cheng)，通過各機構的運動合(he)(he)(he)理地(di)配合(he)(he)(he)，循環工作，把縫(feng)料縫(feng)合(he)(he)(he)起來(lai)。

2、為了提高(gao)縫制(zhi)效率(lv)(lv)(lv)，縫紉機(ji)中通常配置有自動(dong)剪線(xian)機(ji)構，在(zai)縫紉結束(shu)時(shi)自動(dong)將面(mian)線(xian)和(he)底線(xian)剪斷，不但使得縫制(zhi)順暢，而(er)且減少衣(yi)(yi)服中的(de)(de)線(xian)頭(tou)(tou)(tou)(tou)，提高(gao)了后續整理的(de)(de)效率(lv)(lv)(lv)。在(zai)自動(dong)剪線(xian)后，機(ji)針的(de)(de)一側會殘留有一段一定長(chang)度的(de)(de)面(mian)線(xian)線(xian)頭(tou)(tou)(tou)(tou)，在(zai)下次起針縫制(zhi)時(shi)，面(mian)線(xian)線(xian)頭(tou)(tou)(tou)(tou)極容易(yi)在(zai)縫制(zhi)衣(yi)(yi)物(wu)上形(xing)成鳥巢狀線(xian)頭(tou)(tou)(tou)(tou)，影響整個衣(yi)(yi)物(wu)的(de)(de)質量，從(cong)而(er)影響了整個衣(yi)(yi)物(wu)的(de)(de)品(pin)質。為了保證(zheng)衣(yi)(yi)物(wu)的(de)(de)品(pin)質，該鳥巢狀線(xian)頭(tou)(tou)(tou)(tou)就(jiu)必(bi)須得人(ren)工修(xiu)剪，從(cong)而(er)增(zeng)加了人(ren)工的(de)(de)強度，影響了生產(chan)效率(lv)(lv)(lv)。

3、申請號(hao)為202211272392.8的(de)(de)中(zhong)國發明專(zhuan)利申請公開了一種縫紉機(ji)動刀結構及切線(xian)(xian)(xian)(xian)裝(zhuang)置，其在起縫時捕(bu)捉(zhuo)面(mian)線(xian)(xian)(xian)(xian)線(xian)(xian)(xian)(xian)頭(tou)(tou)、并將面(mian)線(xian)(xian)(xian)(xian)線(xian)(xian)(xian)(xian)頭(tou)(tou)切斷。然而(er)，其面(mian)線(xian)(xian)(xian)(xian)線(xian)(xian)(xian)(xian)頭(tou)(tou)的(de)(de)剪(jian)切位(wei)(wei)置遠離機(ji)針，導致剪(jian)線(xian)(xian)(xian)(xian)后(hou)(hou)(hou)殘(can)留(liu)在縫料上的(de)(de)面(mian)線(xian)(xian)(xian)(xian)線(xian)(xian)(xian)(xian)頭(tou)(tou)仍(reng)然較長，仍(reng)然需要后(hou)(hou)(hou)續人工(gong)修剪(jian)。另外，由于(yu)其針槽和(he)起縫剪(jian)線(xian)(xian)(xian)(xian)刃口位(wei)(wei)于(yu)同一槽中(zhong)，導致捕(bu)捉(zhuo)面(mian)線(xian)(xian)(xian)(xian)線(xian)(xian)(xian)(xian)頭(tou)(tou)后(hou)(hou)(hou)無法拉(la)出多余的(de)(de)面(mian)線(xian)(xian)(xian)(xian)線(xian)(xian)(xian)(xian)頭(tou)(tou)，使得(de)面(mian)線(xian)(xian)(xian)(xian)線(xian)(xian)(xian)(xian)頭(tou)(tou)纏(chan)繞進正(zheng)常的(de)(de)線(xian)(xian)(xian)(xian)跡中(zhong)，也(ye)不利于(yu)面(mian)線(xian)(xian)(xian)(xian)線(xian)(xian)(xian)(xian)頭(tou)(tou)剪(jian)斷后(hou)(hou)(hou)的(de)(de)收(shou)集(ji)。并且，該切線(xian)(xian)(xian)(xian)裝(zhuang)置采用(yong)的(de)(de)是單(dan)動刀單(dan)定刀的(de)(de)結構，導致縫紉結束剪(jian)線(xian)(xian)(xian)(xian)后(hou)(hou)(hou)縫料上的(de)(de)殘(can)留(liu)線(xian)(xian)(xian)(xian)頭(tou)(tou)較長。

技術實現思路

1、鑒于(yu)以上所(suo)述現有技術(shu)的缺點，本實用新型要解(jie)決(jue)的技術(shu)問題在于(yu)提供一種防鳥巢雙(shuang)活(huo)動刀剪(jian)線(xian)(xian)機(ji)構，既能可靠地(di)起縫防鳥巢，又能使縫紉結束剪(jian)線(xian)(xian)后縫料上的殘留線(xian)(xian)頭較(jiao)短。

2、為(wei)實(shi)現上(shang)(shang)述(shu)目的，本實(shi)用(yong)新型提(ti)供(gong)一種(zhong)防鳥巢雙活(huo)動(dong)(dong)刀剪線機構，包括固定(ding)設置的起縫(feng)定(ding)刀、以(yi)及(ji)都可運動(dong)(dong)地配(pei)置在縫(feng)紉機中(zhong)旋梭外(wai)周側的主活(huo)動(dong)(dong)刀和縫(feng)后動(dong)(dong)刀，所(suo)述(shu)主活(huo)動(dong)(dong)刀上(shang)(shang)設有起縫(feng)剪線刃、勾(gou)線槽、分(fen)線槽和縫(feng)后剪線刃，所(suo)述(shu)勾(gou)線槽允許縫(feng)紉機中(zhong)的機針通過；

3、當所(suo)述主活動(dong)刀(dao)朝向起縫定刀(dao)運動(dong)時，所(suo)述起縫剪線(xian)刃能與起縫定刀(dao)咬(yao)合；

4、當所述主活動刀(dao)和縫(feng)后(hou)動刀(dao)相向運(yun)動時，所述縫(feng)后(hou)剪線刃能(neng)與(yu)縫(feng)后(hou)動刀(dao)咬合。

5、進一步地(di)，所述(shu)起縫定刀和縫后動刀分別(bie)分布在縫紉機(ji)(ji)中(zhong)機(ji)(ji)針的(de)兩(liang)側(ce)，所述(shu)主(zhu)活動刀和縫后動刀都可轉(zhuan)動地(di)配置在縫紉機(ji)(ji)中(zhong)旋梭的(de)外周側(ce)。

6、進一步地，沿所述主活動刀朝向縫(feng)后(hou)動刀的方向，所述縫(feng)后(hou)剪線(xian)刃、勾線(xian)槽(cao)、分(fen)線(xian)槽(cao)和起縫(feng)剪線(xian)刃先(xian)后(hou)依次排布，或者，所述縫(feng)后(hou)剪線(xian)刃、分(fen)線(xian)槽(cao)、勾線(xian)槽(cao)和起縫(feng)剪線(xian)刃先(xian)后(hou)依次排布。

7、進(jin)一步地，所(suo)述(shu)防鳥巢雙活動(dong)刀(dao)剪(jian)(jian)線機構還包(bao)括(kuo)共用剪(jian)(jian)線驅(qu)動(dong)源和(he)剪(jian)(jian)線傳動(dong)組件(jian)，所(suo)述(shu)共用剪(jian)(jian)線驅(qu)動(dong)源通過(guo)剪(jian)(jian)線傳動(dong)組件(jian)與主(zhu)活動(dong)刀(dao)和(he)縫后動(dong)刀(dao)傳動(dong)連接(jie)，驅(qu)使所(suo)述(shu)主(zhu)活動(dong)刀(dao)和(he)縫后動(dong)刀(dao)相向轉動(dong)或(huo)背向轉動(dong)。

8、進一(yi)(yi)(yi)步(bu)地，所(suo)(suo)述共(gong)用剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)驅動(dong)(dong)(dong)(dong)源(yuan)為(wei)電機，所(suo)(suo)述剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)組件包(bao)括固(gu)定在(zai)(zai)(zai)(zai)共(gong)用剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)驅動(dong)(dong)(dong)(dong)源(yuan)的(de)電機軸(zhou)(zhou)上(shang)(shang)的(de)第(di)一(yi)(yi)(yi)剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)曲(qu)(qu)(qu)柄(bing)(bing)(bing)、第(di)一(yi)(yi)(yi)剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)連(lian)(lian)桿、都可轉動(dong)(dong)(dong)(dong)地支撐(cheng)在(zai)(zai)(zai)(zai)縫(feng)紉機底板中的(de)第(di)一(yi)(yi)(yi)剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)軸(zhou)(zhou)、主(zhu)動(dong)(dong)(dong)(dong)刀架(jia)和(he)輔動(dong)(dong)(dong)(dong)刀架(jia)、都固(gu)定在(zai)(zai)(zai)(zai)第(di)一(yi)(yi)(yi)剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)軸(zhou)(zhou)上(shang)(shang)的(de)第(di)二剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)曲(qu)(qu)(qu)柄(bing)(bing)(bing)、第(di)三剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)曲(qu)(qu)(qu)柄(bing)(bing)(bing)和(he)第(di)四剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)曲(qu)(qu)(qu)柄(bing)(bing)(bing)、第(di)二剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)連(lian)(lian)桿、以(yi)及(ji)剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)銷(xiao)，所(suo)(suo)述第(di)一(yi)(yi)(yi)剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)連(lian)(lian)桿的(de)兩端分別(bie)與(yu)第(di)一(yi)(yi)(yi)剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)曲(qu)(qu)(qu)柄(bing)(bing)(bing)和(he)第(di)二剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)曲(qu)(qu)(qu)柄(bing)(bing)(bing)鉸接(jie)，所(suo)(suo)述第(di)二剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)連(lian)(lian)桿的(de)兩端分別(bie)與(yu)第(di)三剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)曲(qu)(qu)(qu)柄(bing)(bing)(bing)和(he)主(zhu)動(dong)(dong)(dong)(dong)刀架(jia)鉸接(jie)，所(suo)(suo)述第(di)四剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)曲(qu)(qu)(qu)柄(bing)(bing)(bing)中開設有剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)滑槽，所(suo)(suo)述剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)銷(xiao)固(gu)定在(zai)(zai)(zai)(zai)輔動(dong)(dong)(dong)(dong)刀架(jia)上(shang)(shang)、并可轉動(dong)(dong)(dong)(dong)且(qie)可滑動(dong)(dong)(dong)(dong)地設在(zai)(zai)(zai)(zai)剪(jian)(jian)(jian)線(xian)(xian)(xian)(xian)傳(chuan)(chuan)(chuan)動(dong)(dong)(dong)(dong)滑槽中，所(suo)(suo)述主(zhu)活動(dong)(dong)(dong)(dong)刀固(gu)定在(zai)(zai)(zai)(zai)主(zhu)動(dong)(dong)(dong)(dong)刀架(jia)上(shang)(shang)，所(suo)(suo)述縫(feng)后(hou)動(dong)(dong)(dong)(dong)刀固(gu)定在(zai)(zai)(zai)(zai)輔動(dong)(dong)(dong)(dong)刀架(jia)上(shang)(shang)。

9、進一步地，沿所(suo)述主(zhu)活(huo)動刀朝向縫(feng)后(hou)動刀的方向，所(suo)述勾(gou)線(xian)(xian)槽(cao)、起(qi)縫(feng)剪線(xian)(xian)刃、縫(feng)后(hou)剪線(xian)(xian)刃和(he)分線(xian)(xian)槽(cao)先后(hou)依次排布；所(suo)述主(zhu)活(huo)動刀上開設有落針槽(cao)，所(suo)述落針槽(cao)允許縫(feng)紉機(ji)中(zhong)的機(ji)針通過，所(suo)述起(qi)縫(feng)剪線(xian)(xian)刃和(he)縫(feng)后(hou)剪線(xian)(xian)刃分布在落針槽(cao)的兩側。

10、進一(yi)步地，所述(shu)(shu)防鳥巢雙活(huo)(huo)動(dong)(dong)(dong)(dong)刀(dao)(dao)(dao)剪(jian)(jian)線(xian)機構還包括主(zhu)剪(jian)(jian)線(xian)驅(qu)動(dong)(dong)(dong)(dong)源、輔(fu)剪(jian)(jian)線(xian)驅(qu)動(dong)(dong)(dong)(dong)源、主(zhu)剪(jian)(jian)線(xian)傳(chuan)動(dong)(dong)(dong)(dong)組(zu)件和(he)輔(fu)剪(jian)(jian)線(xian)傳(chuan)動(dong)(dong)(dong)(dong)組(zu)件，所述(shu)(shu)主(zhu)剪(jian)(jian)線(xian)驅(qu)動(dong)(dong)(dong)(dong)源通(tong)過(guo)主(zhu)剪(jian)(jian)線(xian)傳(chuan)動(dong)(dong)(dong)(dong)組(zu)件與主(zhu)活(huo)(huo)動(dong)(dong)(dong)(dong)刀(dao)(dao)(dao)傳(chuan)動(dong)(dong)(dong)(dong)連接，所述(shu)(shu)輔(fu)剪(jian)(jian)線(xian)驅(qu)動(dong)(dong)(dong)(dong)源通(tong)過(guo)輔(fu)剪(jian)(jian)線(xian)傳(chuan)動(dong)(dong)(dong)(dong)組(zu)件與輔(fu)活(huo)(huo)動(dong)(dong)(dong)(dong)刀(dao)(dao)(dao)傳(chuan)動(dong)(dong)(dong)(dong)連接，驅(qu)使所述(shu)(shu)主(zhu)活(huo)(huo)動(dong)(dong)(dong)(dong)刀(dao)(dao)(dao)和(he)縫后動(dong)(dong)(dong)(dong)刀(dao)(dao)(dao)相向轉(zhuan)(zhuan)動(dong)(dong)(dong)(dong)或背向轉(zhuan)(zhuan)動(dong)(dong)(dong)(dong)。

11、進一步地，所(suo)(suo)述主(zhu)(zhu)剪(jian)(jian)(jian)(jian)(jian)線驅(qu)動(dong)源為(wei)電機(ji)(ji)，所(suo)(suo)述主(zhu)(zhu)剪(jian)(jian)(jian)(jian)(jian)線傳動(dong)組件包(bao)括(kuo)固定(ding)在(zai)主(zhu)(zhu)剪(jian)(jian)(jian)(jian)(jian)線驅(qu)動(dong)源的電機(ji)(ji)軸上的第(di)(di)(di)五剪(jian)(jian)(jian)(jian)(jian)線曲(qu)柄(bing)、第(di)(di)(di)三(san)剪(jian)(jian)(jian)(jian)(jian)線連(lian)桿(gan)、都可轉(zhuan)動(dong)地支撐在(zai)縫紉(ren)機(ji)(ji)底(di)板中的第(di)(di)(di)二剪(jian)(jian)(jian)(jian)(jian)線軸和主(zhu)(zhu)動(dong)刀(dao)(dao)架(jia)(jia)、都固定(ding)在(zai)第(di)(di)(di)二剪(jian)(jian)(jian)(jian)(jian)線軸上的第(di)(di)(di)六剪(jian)(jian)(jian)(jian)(jian)線曲(qu)柄(bing)和第(di)(di)(di)七(qi)剪(jian)(jian)(jian)(jian)(jian)線曲(qu)柄(bing)、以及(ji)第(di)(di)(di)四剪(jian)(jian)(jian)(jian)(jian)線連(lian)桿(gan)，所(suo)(suo)述第(di)(di)(di)三(san)剪(jian)(jian)(jian)(jian)(jian)線連(lian)桿(gan)的兩端分別(bie)與第(di)(di)(di)五剪(jian)(jian)(jian)(jian)(jian)線曲(qu)柄(bing)和第(di)(di)(di)六剪(jian)(jian)(jian)(jian)(jian)線曲(qu)柄(bing)鉸接，所(suo)(suo)述第(di)(di)(di)四剪(jian)(jian)(jian)(jian)(jian)線連(lian)桿(gan)的兩端分別(bie)與第(di)(di)(di)七(qi)剪(jian)(jian)(jian)(jian)(jian)線曲(qu)柄(bing)和主(zhu)(zhu)動(dong)刀(dao)(dao)架(jia)(jia)鉸接，所(suo)(suo)述主(zhu)(zhu)活動(dong)刀(dao)(dao)固定(ding)在(zai)主(zhu)(zhu)動(dong)刀(dao)(dao)架(jia)(jia)上。

12、進一(yi)步地(di)(di)，所(suo)(suo)述輔剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)驅(qu)動(dong)(dong)源為電機，所(suo)(suo)述輔剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)傳(chuan)(chuan)動(dong)(dong)組件(jian)包括固定(ding)在(zai)輔剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)驅(qu)動(dong)(dong)源的電機軸(zhou)(zhou)上(shang)的第(di)八(ba)剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)曲(qu)柄、第(di)五(wu)剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)連(lian)桿、都可(ke)轉動(dong)(dong)地(di)(di)支撐在(zai)縫紉機底板中的第(di)三剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)軸(zhou)(zhou)和(he)輔動(dong)(dong)刀(dao)架(jia)、都固定(ding)在(zai)第(di)三剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)軸(zhou)(zhou)上(shang)的第(di)九(jiu)剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)曲(qu)柄和(he)第(di)十剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)曲(qu)柄、以及剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)傳(chuan)(chuan)動(dong)(dong)銷(xiao)，所(suo)(suo)述第(di)五(wu)剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)連(lian)桿的兩端分別與第(di)八(ba)剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)曲(qu)柄和(he)第(di)九(jiu)剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)曲(qu)柄鉸(jiao)接，所(suo)(suo)述第(di)十剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)曲(qu)柄中開(kai)設(she)有剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)傳(chuan)(chuan)動(dong)(dong)滑槽，所(suo)(suo)述剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)傳(chuan)(chuan)動(dong)(dong)銷(xiao)固定(ding)在(zai)輔動(dong)(dong)刀(dao)架(jia)上(shang)、并可(ke)轉動(dong)(dong)且可(ke)滑動(dong)(dong)地(di)(di)設(she)在(zai)剪(jian)(jian)(jian)(jian)(jian)線(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)(xian)傳(chuan)(chuan)動(dong)(dong)滑槽中，所(suo)(suo)縫后動(dong)(dong)刀(dao)固定(ding)在(zai)輔動(dong)(dong)刀(dao)架(jia)上(shang)。

13、進一(yi)步地，所述(shu)防鳥(niao)巢雙活動刀(dao)(dao)剪線(xian)(xian)機(ji)構還包括固定設置的(de)壓(ya)線(xian)(xian)板，所述(shu)壓(ya)線(xian)(xian)板和起縫定刀(dao)(dao)分布在機(ji)針的(de)同一(yi)側，所述(shu)壓(ya)線(xian)(xian)板上設有(you)第(di)一(yi)壓(ya)線(xian)(xian)部(bu)，所述(shu)主活動刀(dao)(dao)上設有(you)第(di)二壓(ya)線(xian)(xian)部(bu)；

14、當所(suo)述起縫(feng)(feng)剪線(xian)(xian)刃近(jin)鄰于起縫(feng)(feng)定刀、且兩者未咬合時，所(suo)述第一壓線(xian)(xian)部和第二壓線(xian)(xian)部相抵(di)接、并形成用(yong)于夾持面(mian)線(xian)(xian)的(de)夾線(xian)(xian)縫(feng)(feng)。

15、進一步地，所述主(zhu)活(huo)動刀上(shang)設有第(di)二壓線部(bu)，所述起縫定刀上(shang)設有第(di)三(san)壓線部(bu)；

16、當所(suo)述起(qi)縫(feng)(feng)(feng)剪線刃(ren)近鄰于起(qi)縫(feng)(feng)(feng)定(ding)刀、且兩者未(wei)咬合時，所(suo)述第二壓(ya)線部和(he)第三(san)壓(ya)線部相(xiang)抵接、并形成用于夾持面線的(de)夾線縫(feng)(feng)(feng)。

17、進一步地，所述防(fang)鳥(niao)巢雙活(huo)動刀剪(jian)線(xian)機構還包括(kuo)固定(ding)設置的吸(xi)風(feng)(feng)(feng)管(guan)(guan)，所述吸(xi)風(feng)(feng)(feng)管(guan)(guan)和起(qi)縫定(ding)刀分布在機針的同一側，所述吸(xi)風(feng)(feng)(feng)管(guan)(guan)具(ju)有(you)吸(xi)風(feng)(feng)(feng)口(kou)(kou)，所述吸(xi)風(feng)(feng)(feng)口(kou)(kou)對準主(zhu)活(huo)動刀。

18、進(jin)一步(bu)地(di)，所(suo)述主活動刀上還(huan)開設有起(qi)縫(feng)(feng)容線(xian)槽和(he)縫(feng)(feng)后容線(xian)槽，所(suo)述起(qi)縫(feng)(feng)容線(xian)槽銜(xian)接(jie)在(zai)起(qi)縫(feng)(feng)剪線(xian)刃和(he)勾線(xian)槽之(zhi)間，所(suo)述縫(feng)(feng)后容線(xian)槽銜(xian)接(jie)在(zai)分(fen)線(xian)槽和(he)縫(feng)(feng)后剪線(xian)刃之(zhi)間。

19、本實用新型還(huan)提供一種縫紉機，所述縫紉機中裝配有如(ru)上(shang)所述的(de)防(fang)鳥巢雙活動刀剪線機構。

20、如上(shang)所述(shu)，本實用新型涉(she)及(ji)的防鳥(niao)巢雙活(huo)動刀剪線(xian)機(ji)構及(ji)縫紉機(ji)，具有以下有益效果：

21、本(ben)申(shen)請(qing)在(zai)起(qi)縫(feng)(feng)(feng)時(shi)(shi)(shi)，通(tong)過主活動(dong)(dong)(dong)刀(dao)的(de)(de)運動(dong)(dong)(dong)，先后使(shi)(shi)(shi)(shi)勾(gou)(gou)線(xian)(xian)槽運動(dong)(dong)(dong)至機針的(de)(de)正下(xia)方、以(yi)及使(shi)(shi)(shi)(shi)起(qi)縫(feng)(feng)(feng)剪(jian)(jian)線(xian)(xian)刃與起(qi)縫(feng)(feng)(feng)定刀(dao)咬合(he)，從而自動(dong)(dong)(dong)切斷從勾(gou)(gou)線(xian)(xian)槽中抽出的(de)(de)面線(xian)(xian)線(xian)(xian)頭(tou)，可靠地實現(xian)起(qi)縫(feng)(feng)(feng)防鳥巢；同(tong)時(shi)(shi)(shi)，本(ben)申(shen)請(qing)在(zai)縫(feng)(feng)(feng)紉結束時(shi)(shi)(shi)，通(tong)過主活動(dong)(dong)(dong)刀(dao)和縫(feng)(feng)(feng)后動(dong)(dong)(dong)刀(dao)的(de)(de)相向運動(dong)(dong)(dong)，先后進行分線(xian)(xian)、以(yi)及使(shi)(shi)(shi)(shi)縫(feng)(feng)(feng)后剪(jian)(jian)線(xian)(xian)刃與縫(feng)(feng)(feng)后動(dong)(dong)(dong)刀(dao)咬合(he)，實現(xian)縫(feng)(feng)(feng)后自動(dong)(dong)(dong)剪(jian)(jian)線(xian)(xian)，并且縫(feng)(feng)(feng)后自動(dong)(dong)(dong)剪(jian)(jian)線(xian)(xian)為雙活動(dong)(dong)(dong)刀(dao)結構(gou)，能使(shi)(shi)(shi)(shi)縫(feng)(feng)(feng)后剪(jian)(jian)線(xian)(xian)刃與縫(feng)(feng)(feng)后動(dong)(dong)(dong)刀(dao)的(de)(de)咬合(he)位置更加接近機針的(de)(de)中心軸線(xian)(xian)，從而使(shi)(shi)(shi)(shi)縫(feng)(feng)(feng)紉結束剪(jian)(jian)線(xian)(xian)后縫(feng)(feng)(feng)料(liao)上(shang)的(de)(de)殘(can)留線(xian)(xian)頭(tou)較(jiao)短(duan)。

技術特征：

1.一種防鳥巢雙活(huo)(huo)動刀(dao)(dao)剪線(xian)機構，其特征在于：包括(kuo)固定設(she)置的起縫定刀(dao)(dao)(10)、以及都可運動地(di)配置在縫紉機中旋梭外周(zhou)側的主活(huo)(huo)動刀(dao)(dao)(20)和(he)縫后動刀(dao)(dao)(30)，所(suo)述(shu)主活(huo)(huo)動刀(dao)(dao)(20)上設(she)有(you)起縫剪線(xian)刃(ren)(21)、勾線(xian)槽(cao)(22)、分線(xian)槽(cao)(23)和(he)縫后剪線(xian)刃(ren)(24)，所(suo)述(shu)勾線(xian)槽(cao)(22)允許縫紉機中的機針(40)通過(guo)；

2.根據權利要求1所述的防鳥巢雙活(huo)動刀剪線機(ji)構，其特征在于：所述起(qi)縫定(ding)刀(10)和縫后動刀(30)分(fen)別分(fen)布在縫紉機(ji)中(zhong)機(ji)針(zhen)(40)的兩側，所述主活(huo)動刀(20)和縫后動刀(30)都可(ke)轉(zhuan)動地配置(zhi)在縫紉機(ji)中(zhong)旋梭的外(wai)周側。

3.根(gen)據(ju)權(quan)利(li)要求1或(huo)2所(suo)(suo)述(shu)的(de)(de)防(fang)鳥巢雙活動(dong)刀(dao)剪(jian)(jian)線(xian)機構(gou)，其特征在于：沿所(suo)(suo)述(shu)主活動(dong)刀(dao)(20)朝向縫(feng)(feng)后(hou)動(dong)刀(dao)(30)的(de)(de)方向，所(suo)(suo)述(shu)縫(feng)(feng)后(hou)剪(jian)(jian)線(xian)刃(ren)(24)、勾線(xian)槽(cao)(22)、分(fen)線(xian)槽(cao)(23)和起縫(feng)(feng)剪(jian)(jian)線(xian)刃(ren)(21)先后(hou)依(yi)次(ci)排布(bu)(bu)，或(huo)者，所(suo)(suo)述(shu)縫(feng)(feng)后(hou)剪(jian)(jian)線(xian)刃(ren)(24)、分(fen)線(xian)槽(cao)(23)、勾線(xian)槽(cao)(22)和起縫(feng)(feng)剪(jian)(jian)線(xian)刃(ren)(21)先后(hou)依(yi)次(ci)排布(bu)(bu)。

4.根據權利要求3所述(shu)的防(fang)鳥巢雙活(huo)動(dong)(dong)(dong)刀剪(jian)(jian)線(xian)(xian)(xian)機構(gou)，其特(te)征在于(yu)：還包(bao)括(kuo)共用(yong)剪(jian)(jian)線(xian)(xian)(xian)驅(qu)動(dong)(dong)(dong)源(51)和(he)剪(jian)(jian)線(xian)(xian)(xian)傳動(dong)(dong)(dong)組(zu)件，所述(shu)共用(yong)剪(jian)(jian)線(xian)(xian)(xian)驅(qu)動(dong)(dong)(dong)源(51)通過(guo)剪(jian)(jian)線(xian)(xian)(xian)傳動(dong)(dong)(dong)組(zu)件與主活(huo)動(dong)(dong)(dong)刀(20)和(he)縫后動(dong)(dong)(dong)刀(30)傳動(dong)(dong)(dong)連接，驅(qu)使所述(shu)主活(huo)動(dong)(dong)(dong)刀(20)和(he)縫后動(dong)(dong)(dong)刀(30)相向轉動(dong)(dong)(dong)或背向轉動(dong)(dong)(dong)。

5.根據權利要求4所述(shu)的(de)(de)(de)防鳥巢(chao)雙活動(dong)(dong)(dong)(dong)刀(dao)(dao)剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)機(ji)(ji)構(gou)，其特征在(zai)(zai)(zai)于：所述(shu)共用剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)驅動(dong)(dong)(dong)(dong)源(51)為電機(ji)(ji)，所述(shu)剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)(dong)組件包括固(gu)定(ding)(ding)在(zai)(zai)(zai)共用剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)驅動(dong)(dong)(dong)(dong)源(51)的(de)(de)(de)電機(ji)(ji)軸(zhou)上(shang)的(de)(de)(de)第(di)(di)(di)(di)一剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)曲(qu)(qu)柄(bing)(61)、第(di)(di)(di)(di)一剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)連桿(gan)(gan)(62)、都(dou)可轉(zhuan)動(dong)(dong)(dong)(dong)地(di)支撐在(zai)(zai)(zai)縫紉(ren)機(ji)(ji)底(di)板中的(de)(de)(de)第(di)(di)(di)(di)一剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)軸(zhou)(63)、主動(dong)(dong)(dong)(dong)刀(dao)(dao)架(64)和(he)輔動(dong)(dong)(dong)(dong)刀(dao)(dao)架(65)、都(dou)固(gu)定(ding)(ding)在(zai)(zai)(zai)第(di)(di)(di)(di)一剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)軸(zhou)(63)上(shang)的(de)(de)(de)第(di)(di)(di)(di)二(er)剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)曲(qu)(qu)柄(bing)(66)、第(di)(di)(di)(di)三剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)曲(qu)(qu)柄(bing)(67)和(he)第(di)(di)(di)(di)四剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)曲(qu)(qu)柄(bing)(68)、第(di)(di)(di)(di)二(er)剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)連桿(gan)(gan)(69)、以及剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)(dong)銷(610)，所述(shu)第(di)(di)(di)(di)一剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)連桿(gan)(gan)(62)的(de)(de)(de)兩端(duan)(duan)分別與第(di)(di)(di)(di)一剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)曲(qu)(qu)柄(bing)(61)和(he)第(di)(di)(di)(di)二(er)剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)曲(qu)(qu)柄(bing)(66)鉸接(jie)，所述(shu)第(di)(di)(di)(di)二(er)剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)連桿(gan)(gan)(69)的(de)(de)(de)兩端(duan)(duan)分別與第(di)(di)(di)(di)三剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)曲(qu)(qu)柄(bing)(67)和(he)主動(dong)(dong)(dong)(dong)刀(dao)(dao)架(64)鉸接(jie)，所述(shu)第(di)(di)(di)(di)四剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)曲(qu)(qu)柄(bing)(68)中開設(she)(she)有剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)(dong)滑槽，所述(shu)剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)(dong)銷(610)固(gu)定(ding)(ding)在(zai)(zai)(zai)輔動(dong)(dong)(dong)(dong)刀(dao)(dao)架(65)上(shang)、并可轉(zhuan)動(dong)(dong)(dong)(dong)且可滑動(dong)(dong)(dong)(dong)地(di)設(she)(she)在(zai)(zai)(zai)剪(jian)(jian)線(xian)(xian)(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)(dong)滑槽中，所述(shu)主活動(dong)(dong)(dong)(dong)刀(dao)(dao)(20)固(gu)定(ding)(ding)在(zai)(zai)(zai)主動(dong)(dong)(dong)(dong)刀(dao)(dao)架(64)上(shang)，所述(shu)縫后動(dong)(dong)(dong)(dong)刀(dao)(dao)(30)固(gu)定(ding)(ding)在(zai)(zai)(zai)輔動(dong)(dong)(dong)(dong)刀(dao)(dao)架(65)上(shang)。

6.根據權利(li)要(yao)求1或2所述(shu)的(de)防(fang)鳥巢雙(shuang)活動(dong)刀剪(jian)線(xian)(xian)機構，其特征在(zai)于：沿所述(shu)主活動(dong)刀(20)朝向縫后(hou)(hou)動(dong)刀(30)的(de)方(fang)向，所述(shu)勾線(xian)(xian)槽(22)、起縫剪(jian)線(xian)(xian)刃(21)、縫后(hou)(hou)剪(jian)線(xian)(xian)刃(24)和(he)(he)分(fen)線(xian)(xian)槽(23)先后(hou)(hou)依(yi)次排(pai)布；所述(shu)主活動(dong)刀(20)上開設有落針(zhen)槽(25)，所述(shu)落針(zhen)槽(25)允許縫紉機中(zhong)的(de)機針(zhen)(40)通過，所述(shu)起縫剪(jian)線(xian)(xian)刃(21)和(he)(he)縫后(hou)(hou)剪(jian)線(xian)(xian)刃(24)分(fen)布在(zai)落針(zhen)槽(25)的(de)兩(liang)側(ce)。

7.根(gen)據(ju)權(quan)利要求6所(suo)述的防鳥巢雙活(huo)(huo)動(dong)(dong)(dong)刀(dao)剪(jian)線(xian)(xian)(xian)機構(gou)，其特征在于：還(huan)包括主剪(jian)線(xian)(xian)(xian)驅(qu)動(dong)(dong)(dong)源(yuan)(52)、輔(fu)(fu)(fu)(fu)剪(jian)線(xian)(xian)(xian)驅(qu)動(dong)(dong)(dong)源(yuan)(53)、主剪(jian)線(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)組(zu)件和輔(fu)(fu)(fu)(fu)剪(jian)線(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)組(zu)件，所(suo)述主剪(jian)線(xian)(xian)(xian)驅(qu)動(dong)(dong)(dong)源(yuan)(52)通過主剪(jian)線(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)組(zu)件與主活(huo)(huo)動(dong)(dong)(dong)刀(dao)(20)傳(chuan)動(dong)(dong)(dong)連(lian)接(jie)，所(suo)述輔(fu)(fu)(fu)(fu)剪(jian)線(xian)(xian)(xian)驅(qu)動(dong)(dong)(dong)源(yuan)(53)通過輔(fu)(fu)(fu)(fu)剪(jian)線(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)組(zu)件與輔(fu)(fu)(fu)(fu)活(huo)(huo)動(dong)(dong)(dong)刀(dao)傳(chuan)動(dong)(dong)(dong)連(lian)接(jie)，驅(qu)使所(suo)述主活(huo)(huo)動(dong)(dong)(dong)刀(dao)(20)和縫后動(dong)(dong)(dong)刀(dao)(30)相向轉(zhuan)動(dong)(dong)(dong)或(huo)背向轉(zhuan)動(dong)(dong)(dong)。

8.根(gen)據權利(li)要求(qiu)7所(suo)述(shu)(shu)的(de)防鳥巢(chao)雙活動刀(dao)(dao)剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)機(ji)構(gou)，其特征在(zai)(zai)(zai)于(yu)：所(suo)述(shu)(shu)主剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)驅(qu)動源(52)為電機(ji)，所(suo)述(shu)(shu)主剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)傳動組件包括固(gu)(gu)(gu)定在(zai)(zai)(zai)主剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)驅(qu)動源(52)的(de)電機(ji)軸上的(de)第(di)(di)五剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)曲(qu)柄(bing)(bing)(611)、第(di)(di)三(san)剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)連(lian)桿(612)、都可(ke)轉動地支撐在(zai)(zai)(zai)縫紉機(ji)底板中的(de)第(di)(di)二剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)軸(613)和主動刀(dao)(dao)架(64)、都固(gu)(gu)(gu)定在(zai)(zai)(zai)第(di)(di)二剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)軸(613)上的(de)第(di)(di)六(liu)剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)曲(qu)柄(bing)(bing)(614)和第(di)(di)七剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)曲(qu)柄(bing)(bing)(615)、以及(ji)第(di)(di)四剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)連(lian)桿(616)，所(suo)述(shu)(shu)第(di)(di)三(san)剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)連(lian)桿(612)的(de)兩端分別與第(di)(di)五剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)曲(qu)柄(bing)(bing)(611)和第(di)(di)六(liu)剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)曲(qu)柄(bing)(bing)(614)鉸接，所(suo)述(shu)(shu)第(di)(di)四剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)連(lian)桿(616)的(de)兩端分別與第(di)(di)七剪(jian)(jian)(jian)(jian)(jian)(jian)(jian)線(xian)曲(qu)柄(bing)(bing)(615)和主動刀(dao)(dao)架(64)鉸接，所(suo)述(shu)(shu)主活動刀(dao)(dao)(20)固(gu)(gu)(gu)定在(zai)(zai)(zai)主動刀(dao)(dao)架(64)上。

9.根(gen)據權利要求7所(suo)(suo)述(shu)(shu)的(de)防鳥巢(chao)雙活動(dong)(dong)(dong)(dong)刀(dao)(dao)剪(jian)(jian)(jian)線(xian)(xian)(xian)機(ji)構，其特征在于(yu)：所(suo)(suo)述(shu)(shu)輔(fu)(fu)剪(jian)(jian)(jian)線(xian)(xian)(xian)驅動(dong)(dong)(dong)(dong)源(53)為電機(ji)，所(suo)(suo)述(shu)(shu)輔(fu)(fu)剪(jian)(jian)(jian)線(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)(dong)組(zu)件包括(kuo)固定在輔(fu)(fu)剪(jian)(jian)(jian)線(xian)(xian)(xian)驅動(dong)(dong)(dong)(dong)源(53)的(de)電機(ji)軸(zhou)上的(de)第八(ba)剪(jian)(jian)(jian)線(xian)(xian)(xian)曲(qu)柄(bing)(617)、第五剪(jian)(jian)(jian)線(xian)(xian)(xian)連桿(gan)(618)、都(dou)可轉(zhuan)動(dong)(dong)(dong)(dong)地(di)支撐在縫(feng)紉(ren)機(ji)底(di)板(ban)中(zhong)的(de)第三剪(jian)(jian)(jian)線(xian)(xian)(xian)軸(zhou)(619)和輔(fu)(fu)動(dong)(dong)(dong)(dong)刀(dao)(dao)架(jia)(65)、都(dou)固定在第三剪(jian)(jian)(jian)線(xian)(xian)(xian)軸(zhou)(619)上的(de)第九剪(jian)(jian)(jian)線(xian)(xian)(xian)曲(qu)柄(bing)(620)和第十剪(jian)(jian)(jian)線(xian)(xian)(xian)曲(qu)柄(bing)(621)、以及剪(jian)(jian)(jian)線(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)(dong)銷(610)，所(suo)(suo)述(shu)(shu)第五剪(jian)(jian)(jian)線(xian)(xian)(xian)連桿(gan)(618)的(de)兩端分別(bie)與第八(ba)剪(jian)(jian)(jian)線(xian)(xian)(xian)曲(qu)柄(bing)(617)和第九剪(jian)(jian)(jian)線(xian)(xian)(xian)曲(qu)柄(bing)(620)鉸接，所(suo)(suo)述(shu)(shu)第十剪(jian)(jian)(jian)線(xian)(xian)(xian)曲(qu)柄(bing)(621)中(zhong)開設(she)有剪(jian)(jian)(jian)線(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)(dong)滑槽，所(suo)(suo)述(shu)(shu)剪(jian)(jian)(jian)線(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)(dong)銷(610)固定在輔(fu)(fu)動(dong)(dong)(dong)(dong)刀(dao)(dao)架(jia)(65)上、并可轉(zhuan)動(dong)(dong)(dong)(dong)且可滑動(dong)(dong)(dong)(dong)地(di)設(she)在剪(jian)(jian)(jian)線(xian)(xian)(xian)傳(chuan)動(dong)(dong)(dong)(dong)滑槽中(zhong)，所(suo)(suo)縫(feng)后動(dong)(dong)(dong)(dong)刀(dao)(dao)(30)固定在輔(fu)(fu)動(dong)(dong)(dong)(dong)刀(dao)(dao)架(jia)(65)上。

10.根據權利要求1所述(shu)的防鳥巢雙(shuang)活(huo)動刀剪線(xian)(xian)機構(gou)，其特征在(zai)于：還(huan)包(bao)括固定(ding)設(she)置(zhi)的壓(ya)線(xian)(xian)板(70)，所述(shu)壓(ya)線(xian)(xian)板(70)和起(qi)縫(feng)定(ding)刀(10)分布在(zai)機針(40)的同一側，所述(shu)壓(ya)線(xian)(xian)板(70)上(shang)設(she)有(you)第(di)一壓(ya)線(xian)(xian)部(bu)(bu)，所述(shu)主活(huo)動刀(20)上(shang)設(she)有(you)第(di)二(er)壓(ya)線(xian)(xian)部(bu)(bu)(26)；

11.根據權利要(yao)求1所述的防鳥(niao)巢雙活(huo)動(dong)刀(dao)剪線機構，其特征(zheng)在于：所述主活(huo)動(dong)刀(dao)(20)上設有第(di)二(er)壓線部(26)，所述起(qi)縫(feng)定刀(dao)(10)上設有第(di)三壓線部；

12.根據權利要(yao)求(qiu)1所(suo)述(shu)的防鳥巢雙活(huo)動(dong)刀(dao)剪線(xian)機(ji)構，其特征(zheng)在于：還包括固定設置的吸(xi)(xi)風(feng)(feng)管(80)，所(suo)述(shu)吸(xi)(xi)風(feng)(feng)管(80)和起(qi)縫定刀(dao)(10)分布在機(ji)針(40)的同一側，所(suo)述(shu)吸(xi)(xi)風(feng)(feng)管(80)具有吸(xi)(xi)風(feng)(feng)口，所(suo)述(shu)吸(xi)(xi)風(feng)(feng)口對準(zhun)主活(huo)動(dong)刀(dao)(20)。

13.根(gen)據權利要求(qiu)1所(suo)述的防鳥巢雙活動(dong)刀剪線(xian)機構(gou)，其(qi)特(te)征在(zai)于(yu)：所(suo)述主(zhu)活動(dong)刀(20)上還開(kai)設有起縫(feng)容線(xian)槽(cao)(cao)(27)和縫(feng)后容線(xian)槽(cao)(cao)(28)，所(suo)述起縫(feng)容線(xian)槽(cao)(cao)(27)銜接在(zai)起縫(feng)剪線(xian)刃(21)和勾(gou)線(xian)槽(cao)(cao)(22)之(zhi)間，所(suo)述縫(feng)后容線(xian)槽(cao)(cao)(28)銜接在(zai)分線(xian)槽(cao)(cao)(23)和縫(feng)后剪線(xian)刃(24)之(zhi)間。

14.一種縫紉機(ji)，其(qi)特征在于：所(suo)述(shu)縫紉機(ji)中(zhong)裝配有權(quan)利要求1-13任一項所(suo)述(shu)的防鳥(niao)巢雙活動刀剪(jian)線(xian)機(ji)構(gou)。

技術總結
本技術提供一種防鳥巢雙活動刀剪線機構及縫紉機，防鳥巢雙活動刀剪線機構包括固定設置的起縫定刀、以及都可運動地配置在縫紉機中旋梭外周側的主活動刀和縫后動刀，主活動刀上設有起縫剪線刃、勾線槽、分線槽和縫后剪線刃，勾線槽允許縫紉機中的機針通過；當主活動刀朝向起縫定刀運動時，起縫剪線刃能與起縫定刀咬合，可靠地實現起縫防鳥巢；當主活動刀和縫后動刀相向運動時，縫后剪線刃能與縫后動刀咬合，實現縫后自動剪線，并且縫后自動剪線為雙活動刀結構，能使縫后剪線刃與縫后動刀的咬合位置更加接近機針的中心軸線，從而使縫紉結束剪線后縫料上的殘留線頭較短。

技術研發人員：萬義明,管建平,洪志敏
受保護的技術使用者：杰克科技股份有限公司
技術研發日：20240129
技術公布日：2024/9/19