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1. Accept the task

(1) The formal drawing of the crate mould after being audited and signed and the brand and transparency of the plastic shall be indicated.

(2) Specifications or technical requirements for plastic parts.

(3) Production output.

(4) Samples of plastic parts.

Usually, the task of designing the Crate Mould(FURNITUREMOULD) is put forward by the craftsman according to the task book of forming plastic parts, and the mould designer designs the mould according to the task book of forming plastic parts and the task book of mould design.

2. Collect, analyze and digest the original data

Collect and sort out the data on the design, moulding process, moulding equipment, mechanical processing and special processing for use in the design of crate mould.

(1) digest the drawing of plastic parts, understand the purpose of the parts, and analyze the technical requirements such as manufacturability and dimensional accuracy of plastic parts. For example, what are the requirements of plastic parts in terms of appearance shape, color transparency and service performance, whether the geometric structure, inclination and insert of the plastic parts are reasonable, the allowable degree of forming defects such as weld marks and shrinkage cavities, and whether there is post-processing such as coating, electroplating, glueing, drilling, etc. Select the dimension with the highest dimensional accuracy of plastic parts for analysis to see if the estimated forming tolerance is lower than that of plastic parts and whether the plastic parts can be formed to meet the requirements. In addition, it is necessary to know the plasticizing and moulding process parameters of plastics.

(2) Digesting process data, analyzing whether the requirements of moulding method, equipment type, material specification, crate mould structure type and the like proposed in the process specification are appropriate and can be implemented.

The moulding materials shall meet the strength requirements of plastic parts and have good fluidity, uniformity, isotropy and thermal stability. According to the application of plastic parts, the moulding materials shall meet the requirements of dyeing and metal plating conditions, decoration performance, necessary elasticity and plasticity, transparency or opposite reflection performance, adhesiveness or weldability, etc.

(3) Determining a moulding method

Is it direct compression, casting or injection?

(4) Selecting moulding equipment

According to the type of moulding equipment to choose the crate mould, so we must be familiar with the performance, specifications and characteristics of various moulding equipment. For example, for injection machines, the following contents should be understood in terms of specifications: injection capacity, mould clamping pressure, injection pressure, mould installation size, ejection device and size, nozzle hole diameter and nozzle spherical radius, gate sleeve positioning ring size, mould maximum thickness and minimum thickness, mould stroke, etc. See relevant parameters for details. The overall dimensions of the mould should be preliminarily estimated to determine whether the mould can be installed and used on the selected injection machine.

(5) Specific structural scheme

The choice of an ideal crate mould structure lies in determining the necessary forming equipment and the ideal number of cavities, which can make the crate mould itself meet the requirements of technological technology and economic production of the plastic parts under absolutely reliable conditions. The technological requirements for plastic parts are to ensure the geometric shape, surface finish and dimensional accuracy of plastic parts. The economic requirements of production are to make the cost of plastic parts low, the production efficiency high, the crate mould can work continuously, the service life is long, and the labour force is saved.

If you are interested in our products, you can click Household Product Mould to learn more information.


In the process of plastic melting and plasticizing, the Crate Mould(FURNITUREMOULD) is prone to defects. The solution is to reduce the quenching stress after heat treatment to a minimum, because the quenching stress and the mesh carbonized structure, under the action of grinding force, can easily crack the workpiece due to phase transformation of the structure. Reasonable use of cooling and lubricating fluid, play the three major roles of cooling, washing and lubrication, keep the cooling and lubricating clean, thus control the grinding heat within the allowable range, and prevent the thermal deformation of the workpiece.

Specific Operation of Processing Defects of Crate Mould:

1. Improve the cooling conditions during grinding, such as adopting oil impregnated grinding wheel or internal cooling grinding wheel and other measures. When cutting fluid is introduced into the center of grinding wheel, cutting fluid can directly enter grinding area to play an effective cooling role and prevent workpiece surface burns. Reasonable use of cooling and lubricating fluid, play the three major roles of cooling, washing and lubrication, keep the cooling and lubricating clean, thus control the grinding heat within the allowable range, and prevent the thermal deformation of the workpiece.

2. Reduce the quenching stress after heat treatment to the minimum, because under the action of grinding force, the quenching stress and reticular carbonized structure can easily cause cracks in the workpiece due to phase transformation of the structure. In order to eliminate the grinding residual stress of high precision dies, low temperature aging treatment should be carried out after grinding to improve toughness.

3. To eliminate grinding stress, the crate mould can also be immersed in salt bath at 260 ~ 315℃ for 1.5min, and then cooled in oil at 30℃, thus the hardness can be reduced by 1HRC and the residual stress can be reduced by 40% ~ 65%.

4. For precision grinding of precision dies with dimensional tolerance within 0.01mm, attention should be paid to the influence of ambient temperature and constant temperature grinding is required. From the calculation, it can be seen that when the temperature difference of 300mm long steel parts is 3℃, the material has a change of about 10.8μm (10.8=1.2×3×3, the deformation amount per 100mm is 1.2μm/℃). All finishing processes should fully consider the influence of this factor.

5. Electrolytic grinding is adopted to improve the manufacturing precision and surface quality of the crate mould. During electrolytic grinding, the grinding wheel scrapes off oxide film instead of metal, so the grinding force is small, the grinding heat is also small, no grinding burr, crack, burn and other phenomena will occur, and the general surface roughness can be better than Ra0.16μm; In addition, the abrasion of the grinding wheel is reduced. For example, when grinding hard alloy, the abrasion of the silicon carbide grinding wheel is about 400% ~ 600% of the weight of the hard alloy, while when electrolytic grinding is used, the abrasion of the grinding wheel is only 50% ~ 100% of the abrasion of the hard alloy.

If you are interested in our products, you can click Household Product Mould to learn more information.


Generally speaking, the forming surface of Household Product Mould(FURNITUREMOULD) is complex in shape, high in dimensional accuracy and small in surface roughness value, and there are many heat treatment requirements. The consistency and coordination of the forming surface of various related parts have strict requirements. The processing of forming surface is one of the keys and difficult points in the die process of household product mould.

Next, let's look at the main points of household product mould. The processing of various mould parts starts with the processing of the external surface and lays the foundation for the subsequent processing of the forming surface and the structural surface. In the blank design and processing of household product mould, the machining allowance on the outer surface should be made appropriate to avoid material waste and reduce subsequent machining workload. For forgings and casting blanks, necessary annealing and aging heat treatment should be carried out in the blank processing stage to reduce the internal stress of the material and prepare the metallographic structure for subsequent processing.

Die-cutting is to form customized parts with different sizes by precision machining and cutting according to predetermined shapes. The circular knife die-cutting system for die-cutting has a high precision circular knife die-cutting system. Die-cutting and slitting can be completed at one time.

What effect does the refinement of household product mould have on production and processing? It can make the compounding and high efficiency of processing equipment more attractive. High-speed milling has many advantages such as being able to process high-hardness materials, stable processing, small cutting force, small temperature rise and deformation of workpieces, etc., which make mould enterprises pay more and more attention to high-speed processing. Modern measurement technology is continuously integrated into product research and development. Under the system of reverse engineering design and manufacturing, the inseparable relationship between mould and mould parts design and manufacturing is more obvious.

If you are interested in our products, you can click Daily Necessities Mould to learn more information.


Injection moulding of Daily Necessities Mould(FURNITUREMOULD) is a processing method used in mass production of some parts with complex shapes. The specific principle refers to the heated and melted plastic raw materials are pushed by the screw of the injection moulding machine and injected into the mould cavity of the daily necessities mould under high pressure, and the plastic formed products are obtained after cooling and curing.

The daily necessities mould consists of a moving mould and a fixed mould, the moving mould is installed on the moving template of the injection moulding machine, and the fixed mould is installed on the fixed template of the injection moulding machine. During injection moulding, the movable mould and the fixed mould are closed to form a gating system and a mould cavity, and during mould opening, the movable mould and the fixed mould are separated to take out plastic products. Although the structure of daily necessities mould may vary greatly due to the variety and performance of plastics, the shape, and structure of plastic products, and the types of injection machines, the basic structure is the same.

The structure of the daily necessities mould is divided into functions, mainly consisting of a pouring system, a temperature adjusting system, a forming part system, an exhaust system, a guide system, an ejection system and the like. Among them, the gating system and moulding parts are the parts in direct contact with the plastic and change with the plastic and the products. They are the parts in the plastic mould that are complicated and vary greatly and require high processing smoothness and precision. In fact, the daily necessities mould is not difficult, no matter how the product changes, for the daily necessities mould to form this product, its structure is nothing more than the above aspects.

If you are interested in our products, you can click Household Product Mould to learn more information.


1. When the operation needs to be temporarily stopped, the Household Product Mould(FURNITUREMOULD) should be closed to prevent the cavity and the core from being exposed to prevent accidental damage. The downtime is expected to exceed 24 hours, and the surface of the cavity and core should be sprayed. Rust oil or mould release agents, especially in wet areas and rainy seasons, should be rust-proofed for a short time. The moisture in the air will reduce the surface quality of the cavity and the surface quality of the product will decrease. When the household product mould is used again, the oil on the mould should be removed and wiped clean before use. The cleaned compressed air required by the mirror surface is dried and then dried with hot air, otherwise, it will ooze out during moulding and cause defects in the product.

2. After the temporary shutdown, turn on the machine. After opening the household product mould, check whether the slider limit is moved. If no abnormality is found, the mould can be closed. In short, be careful before starting the machine, not careless.

3. In order to extend the service life of the cooling water channel, when the household product mould is deactivated, the water in the cooling water channel should be immediately removed with compressed air, and a small amount of oil should be put into the mouth of the nozzle, and then compressed air is blown to make all the cooling pipes. There is a layer of anti-rust oil.

4. Carefully check the working status of each control unit during work to prevent abnormalities in the auxiliary system, heating, and maintenance of the control system is especially important for hot runner moulds. At the end of each production cycle, rod heaters, belt heaters, and thermocouples should be measured with the mother-in-law and compared with the technical description of the mould to ensure that the function is intact. At the same time, the control loop may be tested by an ammeter mounted in the loop. The oil in the hydraulic cylinder for core pulling is drained as much as possible, and the nozzle is sealed to prevent the hydraulic oil from leaking out or polluting the surrounding environment during storage and transportation.

5. If you hear any abnormal sounds or other abnormalities in the household product mould during production, you should immediately stop the inspection. The mould maintenance personnel shall conduct a patrol inspection on the normal running moulds in the workshop. When abnormal phenomena are found, they shall be dealt with in time.

6. When the operator is in the handover class, in addition to handing over the production, the process is closely related to the record, and the use status of the household product mould must be detailed.

7. When the household product mould completes the production quantity of the product when replacing the other household product mould, the mould cavity should be coated with an anti-rust agent, and the mould attachment should be sent to the mould maintenance staff, and the last piece of production is qualified. The products are sent to the maintenance staff as a sample. In addition, you should also send a mould use list, fill in the machine on which the mould is used, how many products are produced from a certain month of the year, and whether the mould is good now. If there is a problem with the household product mould, it is necessary to fill in the mould on the used sheet, propose the specific requirements for modification and improvement, and submit an unprocessed sample to the custodian, and leave it to the mould to repair the mould.

8. After the machine is stopped, check the surface of the household product mould for residual glue. After cleaning the foreign material, evenly spray the anti-rust agent and fill in the relevant records accurately.

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The mould base is indispensable in the production of Household Product Mould(FURNITUREMOULD), so the performance of the mould for household products must be strict. Today, we will introduce some four conditions:

First, the wear resistance of mould for household products. Since the household product mould generate strong friction when used, the household product mould is easily broken due to wear problems. Hardness is an important factor affecting the wear resistance of household products. If the hardness of household moulds is relatively high, the impact of wear will be relatively small, and its wear resistance will be even better. In addition, the type of carbide in the material, as well as the shape and size, will affect its wear resistance.

Second, there is still a certain degree of toughness, because most of the places where household mould is used are relatively poor in the environment, and often have strong impact loads, which are prone to breakage, so household mould must have higher strength and toughness. The carbon content of the material, as well as the grain size and the state of the structure, affect its toughness.

Third, to have fatigue fracture resistance. When using a mould for a household product, it is often affected by cyclic stress and cracking often occurs. The impurities in the material, as well as its strength, hardness, etc., affect the fatigue fracture properties, so pay attention to these properties when using the moulds for household products.

Fourth, the household product mould formwork should also have good resistance to high temperature and corrosion, to ensure that the mould frame has good performance for long-term stable use, reducing the occurrence of accidents.

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We all know that the maintenance of Household Product Mould(FURNITUREMOULD) is also very important. It will directly affect the service life of household product mould. First, let's learn about how to maintain the rusty household product mould.

Precautions for anti-rust of household product mould I:Rust inhibitor can only be used after cooling down.

It must be noted that it is useless to spray anti-rust agent before the household product mould is not cooled down, and the mould will rust within a few days. Why does this happen? In fact, it is not the quality problem of the antirust product itself, but the reason lies in the fact that the mould is sprayed with the antirust agent before cooling down because the mould will absorb the water in the antirust agent before returning to the temperature, which will produce signs of rust. Therefore, the correct method is to wait for the mould to cool naturally before using the mould rust inhibitor.

Precautions for anti-rust of household product mould II: Avoid storing the mould in a humid environment

Anything stored in a humid place will cause a series of changes, and the same is true for household product mould. If it is stored in a humid place for a long time, it is useless to use the best antirust agent, which may eventually lead to mould rusting. Therefore, when we remove the mould from the injection moulding machine, we must pay attention to the storage environment. It is best to choose a dry, ventilated, mould rack. Even if it is stored for so many years, there is no need to worry about rusting the household product mould.

Precautions for anti-rust of household product mould III: Pay Attention to Selection of Anti-rust Agent

Attention to Selection of Anti-rust Agent When we buy and use antirust agents, it is best to use antirust products that we often use or have used, and it is best to comply with environmental protection standards, which can bring us the greatest protection. At present, there are many antirust agents, antirust oil and antirust powder on the market. If you do not use the household product mould for a long time, it is better to use the long-term antirust agent used by professional moulds. The general cycle is one to three years, which can effectively ensure the safety and service life of household product mould.

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Due to the high precision of the manufacturing and processing precision of the Daily Necessities Mould(FURNITUREMOULD), the production and processing techniques are also complicated, so the processing and production costs of the general daily necessities mould are high. Molud manufacturers hope that the service life of the mould is longer, and the requirements for the use, maintenance and maintenance of the mould are higher, so as to maintain the working precision and prolong the service life. The choice of daily necessities mould materials is also an important condition for extending the service life of the mould. The daily necessities mould manufacturing materials must meet the following requirements:

1. The daily necessities mould steel must have good processing properties. When working in high temperature environment and heat treatment, the deformation should be small.

2. The flow path of the melt channel in the cavity of the daily necessities mould should be small, so the surface roughness of the working surface should be reduced. The steel should have good polishing performance. Impurities, no pores.

3. Excellent wear resistance. In order to maintain the dimensional accuracy of the mould structure of daily necessities mould for a long time, it is necessary to wear the working surface of the mould after moulding. In particular, when the raw material of the processed product contains a glass fiber-based hard filler, it is easy to accelerate the wear of the working face of the mould. For such a mould, it must have sufficient hardness and wear resistance.

4. Steel corrosion performance is good. In the plastic melt moulding production process, the plastic raw materials and some auxiliary materials should be in contact with the steel, which has a certain chemical corrosion effect on the steel. In order to maintain the corrosion resistance of daily necessities mould, it is necessary to choose corrosion-resistant alloy steel or high-quality carbon steel. If necessary, the surface should also be chrome-plated or nickel-plated.

5. Steel should have sufficient working strength. In addition to a certain degree of hardness after surface heat treatment, the selected steel should have sufficient core strength, because the injection mould is subjected to a large injection pressure and clamping force, so the core of the steel for daily necessities mould must be considered. Strength.

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It goes without saying that the finished plastic parts are only as good as the daily necessities. A moulder can have the latest equipment, the best resin and the most experienced operators, but if the Daily Necessities Mould(FURNITUREMOULD) are not made correctly, there will definitely be problems. Choosing the right daily necessities mould makers often depends on the specifics of the moulder's needs. Each moulder has a different set of expectations and requirements. However, there are several things in common when choosing a daily necessities mould manufacturing partner.

1. Does the daily necessities mould manufacturer have a reputation for representing its products?

If moulders are looking for new daily necessities mould makers, don't forget to check the references. To ensure that daily necessities mould makers have a history of supplying quality everyday necessities, this is the first time a mould manufacturer can respond to demanding turnaround times. It is also important to check financial robustness through D&B or similar sources. If a moulder establishes a new relationship with a daily necessities mould maker and then finds it economically troublesome, it may waste a lot of time when the moulder starts looking for a new daily necessities mould making partner from scratch. .

2. Does the daily necessities mould manufacturer provide tool design in a usable format?

There are many types of CAD systems on the market today. It is essential to check whether the tool design in the CAD (along with the daily necessities mould) has a format that the moulder can refer to and use. This is especially important if any minor adjustments or repairs to the mould will be done by internal maintenance personnel.

3. Is the daily necessities mould manufacturer's workshop equipped with a newer machine?

It is important that the machines used to make the moulds for everyday necessities are not outdated to ensure the first time correctly manufactured high quality everyday necessities. Has the mould manufacturer updated the CNC equipment and tools? The basic recommendation is that the mould manufacturer has a 5-axis finishing machine with a high-speed spindle (over 12,000 rpm). Check that the daily necessities mould manufacturer's equipment is suitable for the type of mould required for the processor. Make sure to look at a finished daily necessities mould, pay attention to the mixture on the surface, and feel that the number of steps exceeds .001". Also, see if the shop has done a lot of manual finishing, such as grinding and benching. How much inventory is left, if it is greater than zero, ask how it controls the finished product to ensure accuracy.

4. Are daily necessities mould makers self-sufficient or outsourced?

Carefully inspect all the processes provided by the daily necessities mould manufacturer to see if you are outsourcing any key processes such as gun drills, EDM, etc. If the moulder finds that certain manufacturing and/or processing is outsourced, then there should be a degree of comfort in how this occurs, and understanding it from a time and quality perspective does not affect the finished mould.

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The heat treatment of steel moulds is an important means of hardness. Generally, after the rough opening of the Daily Necessities Mould(FURNITUREMOULD), the moulds are returned for finishing. The heat treatment during the processing will also be risky. Improper handling will cause cracks in the steel and scrap, resulting in abnormalities. The reasons for plastic steel materials are:

1. Daily necessities mould materials have severe network carbide segregation.

2. There are mechanical or cold plastic stresses in the daily necessities mould.

3. Daily necessities mould heat treatment is improper (heating or cooling rate is too fast, quenching medium is not properly selected, cooling temperature is too low, cooling time is too long, etc.).

4. Daily necessities mould has complex shapes, uneven thickness, sharp corners and fine threaded holes, which keep thermal stress and tissue stress too large.

5. Daily necessities mould the heating temperature of the mould quenching is too high to cause overheating or overheating.

6. When hardened, the tempering is not timely or the tempering time is insufficient.

7. When the daily necessities mould are reworked, quench heat without intermediate annealing.

8. Dirty grinding process for daily necessities mould heat treatment.

9. High tensile stress and microcracks in the hardened layer after heat treatment of the daily necessities mould.

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