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precise compression springspreferred AFR PrecisionCompressi

precise compression springsandtension spring exporterof AFR Precision Technology Co.,Ltdis favored by the majority of customers love, We have established long-term cooperation with many partner, FR4 manufacturers china,compression springx24e1346nfrom AFR Precisionmeet the needs of our customers. AFR Precisionstrength,abide by contract, keep faith, take quality and credit of contract,obtained the customer trust and praise.

AFR Precision Technology Co.,Ltd has been devoted to study the needs of AFR industrial customers, ant tailored to customers demand and solutions. The advantage of AFR Precision lies not only in the industry-leading technology and the elite professional team, but also to provide excellent services in precise spring for household appliances,wire forming spring,tention spring,and the enthusiasm of positive innovation and faith of respect promise . Become a customer trusted putting a ballpoint pen spring on a i cable integrated service providers, to help customers realize the business value of Compression springs, is AFR Precision unswerving mission and pursuit. Details: Needle tubing spring pen point and ball-point pen cartridge comprising sameThe invention provides a needle tubing spring pen point. The needle tubing spring pen point comprises a cylindrical ball seat body, a ball and a spring, wherein one end of the ball seat body is provided with a ball seat; the other end of the ball seat body is provided with an opening and a lock part adjacent to the opening; the ball seat body also comprises an ink supply passage formed between the ball seat and the opening; the ball seat is provided with a central hole and a plurality of oil slots; the ball is arranged in the ball seat and is protruded from the ball seat; the spring is positioned in the ink supply passage and is made of stainless steel wires with the diameter of 0.08-0.1mm; the external diameter of the spring is 0.5-0.55mm; and the edge of the ball seat is bent and deformed towards the ball to receive balls, so that a radial gap and an axial gap are formed between the edge and the balls. The invention also provides a ball-point pen cartridge comprising the needle tubing spring pen point. By the needle tubing spring pen point, the whole spring can be placed in the pen point under the condition that the pen point is thinner and the inside space is smaller, and can be matched with ink with middle viscosity and thixotropy to achieve a better effect.Thus, it invented spring tip, i.e., mounting a small spring-loaded ball inside the tip, the equivalent of one-way valve means of a spring force to the ball and the ball seat between the side port when not writing the gap is closed, to prevent it from drying, the purpose of the incoming air; rely writing pressure greater than the spring force of the writing ball and the ball seat opens a gap between the lip, ink flows properly writtenCurrently, the market spring tip shape having a diameter of mainly 2. 3mm, a length of 11. 5mm bullet shape, the internal diameter stainless steel wire spring mounting O. 12mm, the diameter of the ball O. 5mmvery small space inside the tip, the tip springs also increases and a new function of the spring, both in the internal structure of the dimensioning or machining accuracy, and in matching the tip of the ink requirements are higher, more difficult, It can be said is the largest of all written in technical difficulty.



With the purpose of Quality first, service is paramount in AFR Precision, our strict product quality control system ensures that wire form spring manufacturer,auto wire forming springs and other products of high quality and stability. We have a first-class laboratory equipment and a highly experienced professional and technical team. In the future, we will continue to work hard and get win-win cooperation for a better tomorrow! For more information, please visit the official website:



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