{"id":3530,"date":"2023-07-17T16:44:17","date_gmt":"2023-07-17T09:44:17","guid":{"rendered":"https:\/\/asg.vn\/?p=3530"},"modified":"2024-01-30T14:19:01","modified_gmt":"2024-01-30T07:19:01","slug":"nang-nong-truc-vit-may-ep-nhua","status":"publish","type":"post","link":"https:\/\/asg.vn\/en\/nang-nong-truc-vit-may-ep-nhua\/","title":{"rendered":"METHOD FOR LIFTING THE SCREW BARREL OF PLASTIC INJECTION MACHINE"},"content":{"rendered":"

Share the article<\/h2>\n

I. Why is it necessary to raise the screw barrel?<\/h2>\n

I.1 What is screw barrel raising?<\/h3>\n

Raising the screw barrel means increasing the screw diameter compared to the current axis of the machine. For example, the Sumitomo SE75D plastic injection machine, the current screw diameter is 28mm. Now the new screw cylinder design with a diameter of 36mm (screw and cylinder diameter changed from 28mm to 36mm) is called screw barrel raising.<\/p>\n

I.2 Purpose of raising the screw barrel<\/h3>\n

Raising the screw barrel will increase the maximum amount of plastic injected in 1 cycle, for example, the Sumitomo SE75D screw cylinder set with diameter 28 has a maximum injection volume for a cycle of 61 grams (based on GPPS plastic), then after raising D36 barrel can spray up to 100 grams (based on GPPS plastic)<\/p>\n

\u279c Increase the technological capabilities of the molding machine, meeting molds that require more plastic than the original design of the machine.<\/p>\n

II. How to raise the screw barrel<\/h2>\n

II.1 Information needed to raise the screw barrel<\/h3>\n

\ud83d\udd39\u00a0Machine model information, current screw diameter:<\/strong>\u00a0From this information combined with looking up the press manufacturer's catalog, we will have all the initial parameters.<\/p>\n

\ud83d\udd39\u00a0Information required to be changed<\/strong>: The purpose of raising the barrel is to increase the maximum volume of plastic that can be sprayed in 1 shot.\u00a0Therefore, you need to know the maximum volume for the correct shot you desire<\/strong>.<\/p>\n

\ud83d\udd39\u00a0Fountain journey:<\/strong> Determine the maximum distance the station can move away from the stationary face.<\/p>\n

\"Ph\u01b0\u01a1ng<\/p>\n

II.2 Procedure<\/h3>\n

\ud83d\udd39 From the initial information, calculate the diameter that needs to be increased according to the formula<\/p>\n

\"C\u00f4ng<\/p>\n

In there:<\/p>\n

D2<\/strong>: screw diameter after raising the barrel.<\/p>\n

D1:<\/strong> current screw diameter<\/p>\n

M2:<\/strong> Maximum volume of one shot after raising the barrel<\/p>\n

M1:<\/strong> Maximum volume of a current spray shot<\/p>\n

The final diameter must be rounded up from the calculation above.<\/p>\n

\ud83d\udd39 New screw cylinder design:<\/strong> Based on the type of plastic and product to be produced, the assembly parts and the current screw cylinder set will be designed. See more articles about\u00a0screw cylinder design.<\/strong><\/p>\n

The length of the new design will be longer than the current screw cylinder set.<\/p>\n

\ud83d\udd39 Determine what dimensions the machine must meet with the new length of the screw cylinder set, and then make changes to requirements with:<\/p>\n