注(zhu)射器針筒模(mo)具，包括固(gu)定(ding)側(ce)(ce)(ce)(ce)取(qu)付(fu)(fu)板(ban)、可(ke)(ke)(ke)動(dong)(dong)(dong)(dong)側(ce)(ce)(ce)(ce)取(qu)付(fu)(fu)板(ban)、定(ding)位環和(he)澆口套，其(qi)特征在(zai)(zai)于在(zai)(zai)固(gu)定(ding)側(ce)(ce)(ce)(ce)型(xing)(xing)腔(qiang)板(ban)上(shang)(shang)設(she)有循(xun)環的冷(leng)卻水(shui)道，在(zai)(zai)固(gu)定(ding)側(ce)(ce)(ce)(ce)型(xing)(xing)腔(qiang)板(ban)上(shang)(shang)用(yong)可(ke)(ke)(ke)動(dong)(dong)(dong)(dong)側(ce)(ce)(ce)(ce)開模(mo)拉(la)(la)桿(gan)螺(luo)(luo)栓(shuan)(shuan)螺(luo)(luo)紋連(lian)(lian)接有可(ke)(ke)(ke)動(dong)(dong)(dong)(dong)側(ce)(ce)(ce)(ce)開模(mo)拉(la)(la)桿(gan)，可(ke)(ke)(ke)動(dong)(dong)(dong)(dong)側(ce)(ce)(ce)(ce)開模(mo)拉(la)(la)桿(gan)活動(dong)(dong)(dong)(dong)地(di)裝(zhuang)在(zai)(zai)可(ke)(ke)(ke)動(dong)(dong)(dong)(dong)側(ce)(ce)(ce)(ce)推(tui)板(ban)的孔中(zhong)，在(zai)(zai)可(ke)(ke)(ke)動(dong)(dong)(dong)(dong)側(ce)(ce)(ce)(ce)取(qu)付(fu)(fu)板(ban)上(shang)(shang)用(yong)可(ke)(ke)(ke)動(dong)(dong)(dong)(dong)側(ce)(ce)(ce)(ce)限(xian)位拉(la)(la)桿(gan)螺(luo)(luo)栓(shuan)(shuan)螺(luo)(luo)紋連(lian)(lian)接有可(ke)(ke)(ke)動(dong)(dong)(dong)(dong)側(ce)(ce)(ce)(ce)限(xian)位拉(la)(la)桿(gan)，可(ke)(ke)(ke)動(dong)(dong)(dong)(dong)側(ce)(ce)(ce)(ce)限(xian)位拉(la)(la)桿(gan)活動(dong)(dong)(dong)(dong)地(di)穿在(zai)(zai)可(ke)(ke)(ke)動(dong)(dong)(dong)(dong)側(ce)(ce)(ce)(ce)推(tui)板(ban)的孔中(zhong)。該實用(yong)新型(xing)(xing)生(sheng)產注(zhu)射器針筒，模(mo)具結構簡單，循(xun)環的水(shui)冷(leng)卻均衡，成型(xing)(xing)周期短，生(sheng)產效率高。

一(yi)次性(xing)注射(she)(she)器的(de)針筒(tong)(tong)結構，包括一(yi)中空筒(tong)(tong)體(ti)，該中空筒(tong)(tong)體(ti)近尾端內(nei)壁(bi)上設有與推桿上限位(wei)臺(tai)階配(pei)合的(de)環(huan)形凹(ao)槽(cao)，其特征在(zai)于：所述環(huan)形凹(ao)槽(cao)由前、后(hou)凸環(huan)構成槽(cao)壁(bi)，其中后(hou)凸環(huan)高度大(da)于前凸環(huan)0.25mm～0.35mm。本產品通過前、后(hou)凸環(huan)的(de)高度差，使推桿在(zai)使用(yong)(yong)過后(hou)在(zai)不(bu)破壞中空筒(tong)(tong)體(ti)的(de)情況不(bu)易被拉出(chu)，保證了注射(she)(she)器“一(yi)次性(xing)”的(de)使用(yong)(yong)安全性(xing)，有利于杜絕交叉感染(ran)。