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jx0316-铣边机带cad和文档
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jx0316-铣边机（带cad和文档）,jx0316-铣边机带cad和文档
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781型铣边机维修 781型铣边机维修跳针是铣边机经常出现的故障，跳针可分为：下勾线盘勾线跳针和机针未勾上缝线跳针。 下勾线盘勾线跳针如何判断是下勾线盘勾线跳针呢？在操作中上勾线钩勾住机针线环，机针带着缝线下降，下勾线盘勾线后，这时缝料上面或线钩上有线环，这都是因为下勾线盘钩头没有勾住机针上的线环所造成的跳针。调整时机针高度的定位标准是：机针在上死点时机针尖距离针板上平面16mm。下勾线盘的勾线时间为：机针在第一圈下降至下死点后，向上回升1.3 mm时，下勾线盘钩头应该到达机针凹面中心（图1），钩头与机针凹面的间隙为零。在这里要强调的是通常情况下机针回升1.3 mm时，下勾线盘钩头应到达机针中心。这是因为针杆下降至针板时封针被挡在了针板上方（图2、3），机针孔向操作者的一面打开，针孔内的缝线失去了保护，机针从下死点稍微向上回升，机针孔内的缝线失去拉力很容易形成线环，如果下勾线盘勾线时间略迟，在勾线之前缝线就容易从机针孔内脱出或线环过大扭曲变形造成跳针。也可将下勾线盘勾线时间稍微提前。 机针勾线跳针机针勾线跳针表现为：在缝制面料的正面一针或几针没有线迹，或缝了几针后机针再也带不上缝线。要排除该故障，首先应对机器的下送线机构有所了解，弄清它的工作原理、时间相位。机针在第一圈的下死点，当回升1.3 mm时下勾线盘钩头勾住机针线环，并继续旋转扩大线环（图4、5），依次将缝线送入下送线指内紧线钩中夹线器中。与此同时，下送线钩从前行程末端，向后（操作者）擦着缝线运动到后行程末端，然后勾着缝线再运动到前行程末端停止。第二圈没有带缝线的机针下降至下死点后开始回升，此时下送线指推着缝线同步向左前方围着机针作曲线运动，下送线指和机针相遇时的距离为0.1 mm（图4），在机针上升至封针封住机针孔后，下送线指开始回退，紧线钩松线，夹线器打开。 要保证机针能顺利地勾上缝线，那么缝线每次都应在下送线钩前、下送线指内、夹线器中、紧线钩内。重要的是下送线钩必须每次把缝线勾住，这就要求必须调整好它们的时间相位。调整时最好用观察针板（把针板右边磨掉一部分），以便于观察下勾线盘勾线、下送线钩勾线和送线、送线指的送线情况。下送线钩在机针前行程末端时的标准位置是：下送线钩和机针的距离是2.5 mm。下送线钩在左面的标准位置是：下送线钩钩头超出机针左边0.3 mm。旋松下送线钩座固定螺钉进行调节（图6）。下送线钩的高度距离针板下面0.3 mm（图7），旋松下送线钩紧固螺钉进行调节。为什么要距离针板这么近，主要是因为下送线钩越高，下送线钩就越容易擦着缝线向后运动，返回时就能勾住缝线。机针勾线跳针，绝大部分都是由于下送线钩没有勾住缝线所造成的。下送线钩的弧型背面擦着缝线向后运动，然后勾上缝线送向前行程末端，这一点尤为重要。还要注意的一点是，在缝制过程中出现断针，在排除故障前，最好先检查下送线钩弧型背面有无划伤，如果下送线钩弧型背面有毛刺，那么当下送线钩向后运动，缝线就不可能顺畅地滑入下送线钩的前面，下送线钩也就没有勾住缝线，跳针也就很自然的事。夹线器调整不当，也会引起机针勾线时偶尔跳针。它的时间相位是：在第一圈下勾线盘勾住机针线环旋转扩大，紧线钩和夹线器的左半边在下勾线盘钩头前8 mm左右，开始进入下勾线盘内。在第二圈当回升的机针勾住缝线并被封针封住针孔后，紧线钩松线，夹线器打开。调整方法是：旋松夹线器控制凸轮上的两颗紧固螺钉进行调整（图8），但调整后还应观察下送线钩的送线时间相位是否正确。这是因为下送线钩控制凸轮和夹线器控制凸轮是连接在一起的，如果下送线钩时间相位受到影响，就应拆下下勾线盘，在夹线器控制凸轮槽内用扳手旋松两颗紧固螺钉，用六方扳手带着其中一颗螺钉在槽内滑动，从而改变下送线钩的时间相位。 末尾线头长理想的末尾线头长是10cm左右，超过就可以认为末尾线头过长，造成缝线浪费。线头长的主要原因是下送线钩调整的位置不当和下勾线盘没有调到标准位置。总之要想末尾线头短，下送线钩宁高勿低，下勾线盘勾线时间宁早勿迟。 缝线散开、起丝和断线缝线起丝主要是由于下送线指送线和夹线器松线的时间过早所致。调整方法是调整它们各自的控制凸轮的时间相位。标准的时间相位如图4，机针从下死点回升，下送线指同步送线，封针封住机针孔后，送线指开始回退，夹线器开始张开松线。另外还可以通过夹线器调节螺钉，改变缝线的张力大小（图5），下勾线盘钩头内若卡上缝线或钩头内小轴承运转不灵活等均会引起缝线起丝和断线（图9）。挑线钩的安装调整不当也会引起缝线起丝和断线。挑线钩的标准时间相位是：下勾线盘钩头勾住机针线环时，挑线钩应挑出夹线器中间的缝线（图10），如不正确，调整它的控制凸轮即可。另外还应注意挑线钩的背面一定要光滑，否则缝线就不能进入挑线钩内，夹线器中的缝线也就无法被挑出。另外，每次开始缝纫时缝线的长度不要超过90cm，超过了下线盘的容线量也会出现缝线起丝或断线。 机针挂纱首先应检查封针尖是否损坏或磨损，机针是否弯曲，封针位置是否正确。封针的标准位置是：当机针在上死点时，封针应封闭机针开口，封针尖距机针孔下端0.81.2 mm，封针尖与机针必须贴合。另外，夹线器松线时间过迟、线太紧也会造成机针变形挂纱。 珠点调节手柄上下晃动首先应检查气缸有无串气现象（图11），珠点正反按钮、珠点调节按钮有无接触不良，检查电磁阀动作是否灵活。如气缸串气没有配件，应在气缸橡胶圈槽内缠上两三圈生料带即可。如电磁阀线圈坏了只要换同样型号的线圈。 针码和珠点故障调节针码和珠点大小时一定要先按下它们的调节按钮，然后再调整，调好后再按回按钮。如果不按按钮直接调，不仅调不动，还会使调节丝杠滑丝，造成针码和珠点无法控制；如果调好后忘了按回按钮，针码会乱，无法操作。珠点正反面大小不一致时，应旋松调节压块上的两颗紧固螺钉反复调节（图11）。机针的停车位是靠同步器来定位的。机针的标准停车位是：在第二圈末端，机针下降至针板上面10 mm时应停车，此时上勾线钩尾部距机针约1014 mm。因珠边机运转两圈完成一个工作循环，故调整同步器一定要认真观察。调整不好，要么机针停在了第一圈末端，造成无法缝纫；要么停针位过高或过低，造成穿线时封针打不开或面料无法放入。同步器和主轴之间的皮带张力要略紧。(文章录入：服装机械 皮革机械)781-type aircraft maintenance781-type aircraft maintenance - Jump-edge machine needle is often the fault, jumping needle can be divided into: The hook-hook-line-and-jump-hook did not jump on the suture needle. The hook-hook-line-dancing How to determine the next hook-hook-line-dancing? In operation Shanggou line hook-Zhenxian Gouzhu Central, with a suture needle-drop, the next line hook-hook line, then slit the above material on the hook or cable lines, Central, this is because the next line hook-hook Gouzhu not the first machine needle on the Central Line caused by the needle jumped. Time-adjusted high degree of targeting criteria are: machine needles on the dead point in time to board plane needle tips from 16 mm. The hook-line time for the hook line: machine needles in the first lap down to the next point after death, upward rebound 1.3 mm, the hook-hook the first line should reach the concave center-pin (Figure 1), and the first hook - Needle concave gap is zero. Here want to emphasize is usually under-recovery of 1.3 mm, the hook-hook the first line should reach the centre of needles. This is because the needle-to-pin-drop when the needle was blocked in the closure of the side-board (2,3), the operator of the pinhole to the open side, the suture needle marks in the loss of protection, machine needles from the Died at a slight upward rebound of the suture needle marks Rally very easily lose a Central Line, if the hook-hook-line time slightly late in the Application List system on line before the suture needle marks, easily emerge from the plane or the Central Line Big jump-twisted cause. May also be under-hook-hook line slightly ahead of time. Machine hook-line-dancing Machine hook-line-dancing performance: sewing fabric in the front of a needle or a few needles without trace, or a few stitches after the machine-needle can not take on the suture. The failure to exclude, first of all machines should send the next line agencies understand, understand its working principles, time phase. Machine needle in the first lap of death, when the rebound of 1.3 mm topical hook-hook-head Gouzhu Zhenxian Central, and will continue to expand the revolving line Central (4,5), followed by sutures will be sent into the line that within the tight line hook in the line-in folder. At the same time, the next line hook sent to the end of the previous trip, backward (the operator) Cazhe suture campaign to end after the trip, and then to suture Gouzhao campaign to stop before the trip ends. The second round of the machine without suture needle drop to the next point after the death began to rise, this time sending the suture line that pushed simultaneously around the left front of a machine needle movement, the delivery of that plane and meet at the needle The distance is 0.1 mm (Figure 4), rose to the closure of needle-shut-pinhole, sent under the line that started the Back, tight line hook-line, the line to open folder. To ensure a smooth machine-stitching on the hook, then the next should be sent to each suture line hook, line refers to the next delivery, in-line folder, within the tight line hook. The important thing is to be sent each time the line hook Gouzhu suture, which requires them to be a good time for adjustment phase. Adjustment of the best observed using acupuncture board (the board the right-Modiao part), in order to observe the hook-line hook line, sending the hook-hook line and line delivery, the delivery of that line in delivery. The sending-line hook in the machine before the trip at the end of the standard position: the delivery line hook-and-distance is 2.5 mm. The delivery of the left hook in the standard position: under Gougou sent to the first line beyond the left-pin 0.3 mm. Rotary Matsushita sent on a fixed line hook screw adjusted (6). The line hook sent to the high-plate distance below 0.3 mm (Figure 7), Rotary Matsushita sent line hook fastening screws to regulate. Why should distance needle plate so close, mainly because of higher delivery line hook, line hook sent under the easier it is Cazhuo suture backward movement, will be able to return Gouzhu sutures. Machine-jump-hook line, the vast majority are due to the delivery line hook Gouzhu not caused by the sutures. The line hook sent to the back of the arc Cazhao suture backward movement, and then hook on the end of suture sent forward itinerary This is especially important. We must pay attention to the fact that, in the process of sewing Duanzhen, troubleshooting, best to check under the Arc hook sent to the back line there scratches, if sent to the back of a curved line hook Burr, then the present Hook sent back line movement, it is impossible to suture smoothly down the line hook sent under the front of the line hook will not send Gouzhu sutures, jump-it is very natural. Folder line-adjusted properly, will lead to needle-line when the occasional jump hook needle. It is time to phase: the first lap under hook-line-Gouzhu Zhenxian Central rotating expand, tight line hook and line for folder on the left half of the next line hook-hook before the first around 8 mm, under the Application List system has begun to enter the line - . When the rebound in the second round of machine-Gouzhu suture needle was sealed shut after the pinhole, tight line hook-line, the line to open folder. Adjustment method is: Screw-line control cam folder on the two fastening screw adjustment (8), but should also be adjusted under the observation of the delivery line hook-time delivery phase is correct. This is because under the delivery line hook control cam and cam folder of control is linked to, if the delivery time line hook phase be affected, should be removed under the hook-line, the Line of Control in the folder Cam bed with wrench Screw-two fastening screws, which used the six-party wrench with a screw in the sliding bed, to change the delivery time line hook phase. At the end of a long Xiantou At the end of a long Xiantou ideal is about 10 cm, more than at the end of Xiantou on it that is too long, resulting in a waste of stitches. Xiantou long is the main reason for the adjustment of the delivery line hook improperly positioned under hook line and not transferred to the standard set position. In short to end Xiantou short, hook-line delivery of high not low, the hook-line hook-line time not later than early. Suture spread, and disconnected from the wire Silk sutures from the mainly due to the delivery of that line and sent folder line with the time-lines caused by premature. Adjustment method is to adjust their respective control cam time phase. Standard time phase in Figure 4, needle-point rise from the dead, sent under the simultaneous delivery of that line, closed-shut-pinhole, sent back to the beginning of that withdrawal, the folder open-line start-line. It also can adjust screw-line folder and change the size of the tension suture (5), the hook-line hook in the first stitches on the card if the head of the small hook or bearing operation does not lead to flexibility, all from the silk sutures And disconnected (9). Pick the hook line will lead to improper installation of adjustment from the silk sutures and disconnected. Pick-hook phase is the standard time: The hook-line hook for the first Gouzhu Zhenxian Central, the pick-hook line folder should be singled out for the middle of the stitches (10), if not correct, adjust its control cam that is, Can be. It should also pay attention to the back of the pick-hook must be smooth, it will not be able to enter the pick suture line hook, line-folder in the suture it can not be singled out. In addition, each started sewing thread when the length of no more than 90 cm, set off the assembly line more than the capacity of line will also appear from the silk sutures or disconnected. Machine-linked yarn Should first check whether the closure needle damage or wear, whether bending machine needle, needle closure position is correct. The closure-standard position: When the machine needle in the dead spots, the closure of acupuncture needles should be closed openings, the closure of the needle marks from the bottom of 0.8 1.2 mm, with the closure of acupuncture needle to a paste. In addition, the folder line for late-line time, the lines too tight will cause deformation of needle pegged yarn. - Point adjustment handle shaking from top to bottom Should first check whether string gas in the cylinder (11), the positive and negative points-button, the button-point adjustment whether connection is bad, check whether the electromagnetic valve action flexible. If no gas cylinder string parts, rubber ring in the cylinder tank Chanshang February 3 laps to bring raw material. Such as electromagnetic coil valve b
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