2) After the mold is processed, it is necessary to ask the mold manufacturer for the progress plan, which is the mold progress plan. When to start ordering blanks, when to punch blanks, when to make gongs and light fires, and so on. The most important thing is the time of T 1, so that the mold processing progress can be checked regularly to ensure that T 1 is carried out as planned.
3) The real start of mold following is after T 1 mold test. After you get the sample, you should arrange a review meeting, assemble the engineering prototype, summarize all the problems and discuss the solutions. In general, the product engineer should work with the mold tracker in the mold factory. Every problem should be analyzed, which is caused by imperfect design or inadequate mold processing. Or injection molding process parameters. This requires engineers to have rich product design experience and mold experience. Some problems are caused by a combination of several reasons. Whether to change the design or solve it through the process also requires rich experience to judge. Next, you need to give a change plan. For the structural change (adding glue/reducing glue), it needs to be determined manually, and a detailed mold changing diagram is given. Many engineers would rather be lazy in this respect. Just tell the mold factory that it can't be done here and there, and make such changes without giving specific drawing dimensions. In this way, the mold factory will often make mistakes or mistakes, thus increasing the number of changes. I have learned a lot in this respect. Now all the changes are done by us and the people in the mold factory. We must make hand-held samples to test the effect of the plan. For surface defects, such as waterline, we usually consider the injection molding process first, otherwise we should also consider it.
4) The mold test must go to the site. T 1 die test is not necessary, but it is best for design engineers to go to the site to know about the die test every time they start the die test at T2. On the one hand, it is important to look at the mold state, on the other hand, it is also important to understand the injection process. You don't know the state of the mold just by looking at the sample. Qualified samples do not mean qualified molds. Maybe only ten bottles of beer are good beer, or it contains almost no release agent.
5) Check and accept the mold. Although the product is qualified, the mold may not enter the production state. Even if the mold is qualified, it will take some time for mass production to be successful. In addition to the routine inspection according to the mold instructions, we should also check the hardness of the slider, the pressure of the cooling water channel and related accessories. If necessary, the manufacturer shall provide proof of mold materials to ensure the procurement in accordance with the requirements in the specification.
The above is what we usually do with the model. I hope it will be helpful to you, and I also hope that other colleagues can share your experience in using the model with you.
1. Appearance: At T 1 stage, the mold factory is only 60-70% sure, and the new materials are even different, so the mold trial is the key to the appearance trial.
2. Dimensions: Modelers leave room for some important assembly dimensions, which are also based on experience. Therefore, when T 1 is measured accurately, it is more important to determine how much to modify after actual matching. If you are not sure, you can make it bigger and then smaller, and consider the welding direction.
Mold development process and the specific work of mold engineers.
1. First, after product engineers develop new products, they will check the feasibility of mold opening for our mold engineers and evaluate whether the product structure can be simplified, so as to simplify the mold structure and reduce the cost.
After the mold can be opened in detail, the mold engineer will make an appointment with the mold factory, product engineer and injection engineer for quotation. Our company stipulates that at least three mold factories need to quote at the same time. I wonder if this is the case in other companies? ) When quoting, the determination of parting surface of the mold, the position of the glue inlet and the module of the parts are discussed in detail, and the injection engineer puts forward some appearance problems that may occur during the mold test, such as air line and water line. The mold engineer puts forward the matters needing attention of line position, inclined top and insert, and determines the plastic material and steel model with the product engineer. Finally, the mold factory put forward opinions. If there is no difference, the mold factory is required to provide the mold quotation within the specified time, and the quotation should provide the price of each mold, the steel model, modulus and the date of the first mold trial.
3. After receiving the quotation, shop around, choose the supplier with the lowest price, the strongest technical ability and short molding cycle, and after determining the supplier, bill the mold factory and inform the mold factory to start mold design and order materials. After the design of mold factory is completed, mold suppliers need to provide mold drawings and meet with mold engineers and product engineers to discuss the specific problems existing in mold design.
4. Start to inform the mold factory to officially start mold processing after determining the mold drawings. The mold factory shall provide the mold processing progress to the mold engineer once every two weeks, and provide a complete mold structure diagram (2D, 3D) to make an appointment with the mold engineer and product engineer for the mold trial progress. After receiving the scheduled mold test schedule, the product engineer sends a mold test notice to the plastic department to prepare the mold test machine and plastic raw materials.
After the mold is finished, it will be sent to the plastic department of our factory. Before the mold trial, it is necessary to check the mold, such as water transportation, safety system, positioning and mold closing. After confirming OK, start the mold trial on the machine. Mold engineers, product engineers and mold factory personnel are required to be present during the mold trial. All kinds of problems in the process of mold trial need to be solved by the mold factory on the machine. If it can't be solved on the machine, it is required to dismantle the mold, and a trial mold will be arranged after the solution.
R6。 After getting the sample, the mold engineer arranges the number of parts and the product engineer installs the prototype. After the above work is completed, inform the mold factory to have a meeting to discuss the problems existing in the first mold trial, and the product engineer will raise the assembly and appearance problems. Let's discuss the solution together. After determining the scheme, the mold factory began to change molds. If quotation is needed in the process of mold modification, the mold factory should send the quotation to the product engineer for confirmation as soon as possible. When the mold is modified, the mold factory should provide the specific time for the second mold test. After the mold modification is completed, the second mold test will be started, and the second mold test will be carried out according to step 6 until the qualified parts are tested and the qualified prototype is installed. 7. After the mold is confirmed to be qualified, the mold engineer and the plastic department sign the mold qualification form. In the production process, the mold factory needs free maintenance for the mold problems in100000 bottles of beer. If100000 bottles of beer have mold problems, the mold factory will provide a quotation to the mold engineer for review.
The above mold development process. For reference only.