欧美色图片玖玖视频

<form id=nPsduEOFY><nobr id=nPsduEOFY></nobr></form>

<address id=nPsduEOFY><nobr id=nPsduEOFY><nobr id=nPsduEOFY></nobr></nobr></address>

中文English

超聲波焊接原理

“超聲波焊頭模具”設計的基本知識（二）

上文靈科超聲波爲大家介紹了關于超聲波塑焊機的焊頭模具設計的一些基本知識的上半部分，今天继续为大家分享关于超声波塑焊机的焊头模具设计的基本知識剩余部分。

超聲波焊頭模具的設計制作不僅要注意模具的振幅參數、模具頻率參數，還有超聲波模具的加工精度、振動節點及其使用壽命。

超声波模具制造

一、加工精度。

超聲波焊頭，因爲工作于高頻振動情況下，應盡量保持一個對稱設計，以避免聲波傳遞的不對稱性導致的不均衡應力及橫向振動（我們所用于焊接的焊頭，利用的是超聲波振動的縱向傳遞，對于整個諧振系統而言），不均衡振動能導致焊頭發熱及斷裂。

二、振動節點。

焊頭、變幅杆都設計成工作頻率的半波長諧振體。在工作狀態下，兩個端面的振幅最大，應力最小，而相當于中間位置的節點振幅爲零，應力最大。節點位置一般設計爲固定位置，但通常的固定位置設計厚度在3mm以上或槽固定，因此固定位置不一定爲零振幅，因此會引起叫聲和一部分能量損失，叫聲通常用橡膠圈與其他部件隔離，或者用隔聲材料隔離。

超聲波焊接應用于不同行業，對加工精度要求是不同的。對于特別薄的工件，如锂離子電池極片與極耳的焊接、金箔等的包覆等，對加工精度的要求非常高，我們所有的加工設備均采用數控設備（如加工中心等），這樣才能保證加工出來的精度符合要求。

三、模具使用寿命。

焊头的寿命，重要的是一、材料、二、技术两个方面。

超声波焊接要求金属材料具有柔软性(声波传递中机械损失小)的特点，最常用的材料是铝合金和钛合金。

材料是保证超声波模具寿命与熔接産品效果的主要原因之一。因为模具完成的过程很复杂，所以模具工程师的设计不仅要慎重选择材质，还要知道自己的産品应该使用什么样的材质，不要因为疏忽而影响时效和质量。

靈科超聲波源于1993年，一直致力于高性能的超聲波塑焊設備研發、制造，廣泛運用在塑料、無紡布、包裝、打印耗材、醫療、電子電器、汽車等多個領域，爲客戶供應珠海超聲波、東莞超聲波焊接機、中山超聲波塑焊機、陽江超音波設備清洗機等、根據廠家需求定制非標設備。

超聲波焊接時一些常見的失效問題

“超声波焊头模具”设计的基本知識（一）

‘Oh, yes, you could. Now do just as I tell you, Alice. When you’ve eaten, we’ll talk again.’ "Not a sign of a sign! And yet I'll swear it! Do you know where she's gone?" "Go along with your doctor," said Maitrank now, in great good humour. "If you will have the goodness to call a cab I will get back to my hotel." "I am...." “Bad news?” Larry asked, climbing to the turf. Larry braced himself against the slap of the wheels into the surface water. That might offer just enough resistance to nose them in. However, it ended, as soon as Mr. Everdail had sailed on the yacht to join his wife at their lakeside camp in Maine, uncanny light, odd noises and other strange things had become evident again, as an excited local correspondent had notified the paper. Reporters, searching, and watching, had found nothing so far but the public would be informed as soon as they discovered the secret. He believed that he had no ties now, that friendships, the love of woman, and the kiss of children all had missed him, and that his, thenceforth, must be but vain regret. So far as he knew, Felipa had gone away without ever having received his letter. The man he had intrusted it to had been killed in the Aravaypa Ca?on: that he was certain of; and it never entered his head that his papers might have fallen into other hands, and the note have finally been delivered to her. She was leading the sort of life that would most quickly put him entirely out of her mind. He was taking the Washington papers, and he knew. She had gone away, not even sure that he had given her a thought since the night in the Sierra Blanca when Black River had roared through the stillness, and they had been alone in all the wild world. What a weird, mysterious, unearthly scene it had been, quite outside the probabilities of anything he had imagined or contemplated for a single minute. He had never regretted it, though. He believed in impulses, particularly his own. Yet she not only loved Cairness as much as ever, but more. Her church had the strong hold of superstition upon her, but she might have thrown it off, grown reckless of enforced conventions, and have gone to him, had not faithfulness and gratitude held her yet more powerfully. "Yes, that is she; glad to see you back, Missy," said the General, patting the cow on the back. "Take her back and give her a good feed, if you can find it, for probably she's pretty hungry." Have you never heard of AMP burning them, you silly damn fool? Her young face bowed to his neck, and suddenly his lips crept round and lay against the coolness of her cheek. She did not move, and he still walked on, the grass splashing under his feet, the rabbits scampering round him, showing their little cotton-tails in the dark. HoME 欧美色图片玖玖视频ENTER NUMBET 004www.c799.com.cn
www.dzlbz.com.cn
www.huaaocasting.com.cn
www.sffz.com.cn
www.sxqsd.com.cn
12110.org.cn
www.dbsfedu.cn
www.hyljz.com.cn
www.cqdhome.net.cn
www.byledu.cn