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The application of the Table Mould(FURNITUREMOULD) formwork is different from that of the cold die. The table mould formwork is generally used between 150-200 degrees. In addition to some pressure effects, there is also the effect of temperature on it. Today, Xiaobian gives you a brief introduction of what kind of steel from four angles can meet the requirements of the table mould formwork:

First, it must have certain hardness and wear resistance, so as to ensure that it will not cause some adverse effects due to excessive pressure and friction during use. In addition, it is also necessary to determine the stability of the mould frame size and shape, so that it can be used for a longer period of time. The chemical composition of the steel and the heat treatment hardness will affect its wear resistance, so the hardness of the mould frame can effectively improve its wear resistance.

Second, many mould frames need to be cut during use. In order to avoid damage to the cutting tool and to make it have the better cutting ability, the hardness of the steel used in the formwork must be within an appropriate range.

Third, the selected steel should have good thermal stability, which is beneficial to the processing after quenching and improve the precision of the formwork.

Fourth, it requires better polishing performance. The impurities in the steel should not be too much. There will be no problems such as pitting during polishing to ensure the quality of the mould base.

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In precision injection moulding, the Air Cooler Mould(FURNITUREMOULD) is one of the keys to obtaining precision plastic products that meet the quality requirements. The air cooler mould for precision injection moulding should meet the requirements of product size, precision, and shape. However, even if the accuracy and size of the air cooler mould are the same, the actual size of the moulded plastic product may be inconsistent due to the difference in the amount of shrinkage. Therefore, effective control of the shrinkage of plastic products is very important in precision injection moulding technology.

Whether the air cooler mould is designed properly or not will directly affect the shrinkage of the plastic product. Since the air cooler mould cavity size is determined by the size of the plastic product plus the estimated shrinkage rate, the shrinkage rate is produced by plastic. A range of values recommended by the manufacturer or engineering plastics manual, not only related to the gate form of the air cooler mould, the position and distribution of the gate, but also the crystal orientation (anisotropic) of the engineering plastic, the shape of the plastic product , size, distance to the gate and location. The main factors affecting plastic shrinkage are heat shrinkage, phase change shrinkage, orientation shrinkage, compression shrinkage, and elastic recovery. These factors are related to the moulding conditions or operating conditions of precision injection moulded products. Therefore, the relationship between these influencing factors and injection moulding conditions and their apparent factors must be considered when designing the air cooler mould, such as injection pressure and cavity pressure and filling speed, injection melt temperature and mould temperature, mould structure, and gate. Form and distribution, as well as the cross-sectional area of ??the gate, the thickness of the product, the content of reinforcing filler in the plastic material, the crystallinity and orientation of the plastic material. The influence of the above factors is also different due to different plastic materials, other moulding conditions such as temperature, humidity, continued crystallization, internal stress after moulding, and changes in the injection moulding machine.

Because the injection moulding process is the process of converting plastic from solid (powder or pellet) to liquid (melt) to solid (product). From the pellets to the melt, from the melt to the product, the temperature field, stress field, flow field, and density field are used in the middle. Under the action of these fields, different plastics (thermosetting or thermoplastic, crystallinity) Or non-crystalline, reinforced or non-reinforced, etc.) have different polymer structural morphology and rheological properties. Any factors that affect the above "field" will affect the physical and mechanical properties, size, shape, precision and appearance quality of plastic products.

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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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The Air Cooler Mould(FURNITUREMOULD) uses a hot runner, and the formed product has no water-free material, which does not require post-processing, which completely automates the entire moulding process, saves working time and improves work efficiency.

The pressure loss is small. The hot runner temperature is equal to the temperature of the injection moulding machine nozzle, avoiding surface condensation of the raw material in the runner, and the injection pressure loss is small. Repeated use of spouts can degrade the performance of plastics, while the use of hot runner systems without spouts can reduce the loss of raw materials and thus reduce production costs. The temperature and pressure in the cavity are uniforms, the stress of the plastic part is small, and the density is uniform. Under a small injection pressure, a shorter moulding time, a better product than the general injection moulding system is injected.

For transparent parts, thin parts, large plastic parts or high-demand plastic parts, it can show its advantages, and it can produce larger products with smaller models. The hot nozzles are standardized, serialized, and equipped with a variety of nozzle tips for interchangeability. The unique design and processing of the electric heating ring can achieve uniform heating temperature and long service life. The hot runner system is equipped with a hot runner plate, a thermostat, etc. The design is exquisite, diverse, easy to use, and stable and reliable. The shortcomings of the application of the runner system: the overall mould closing height is increased, and the overall height of the air cooler mould is increased due to the addition of the hot runner plate. Thermal radiation is difficult to control, and the biggest problem with hot runners is the heat loss of the runner, which is a major issue that needs to be solved. There is thermal expansion, and thermal expansion and contraction are issues that we should consider when designing. Air cooler mould manufacturing costs increase, hot runner system standard accessories are expensive, affecting the popularity of hot runner air cooler mould.

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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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In life, you often see many plastic chairs, all kinds of, there are ordinary dining chairs, armchairs, armchairs, and public facilities chairs. So how do these chairs come out, and what is the craftsmanship of the Chair Mould(FURNITUREMOULD)? What are the points of attention in the process of making a chair mould?

The chair mould should pay attention to the superposition problem, product weight, strength and wall thickness. If a chair has multiple artboard backrests, be careful when designing the panels.

The problem that the chair mould needs to pay attention to during production: 1. The cooling water device has a good cooling effect. 2. Whether the product is overweight. 3. Is the Haval line good enough to see if there is a hand cut? 4. The surface of the mould is required to be polished. The product cannot be cut after it is printed.

After the chair mould is opened, what key points to check: 1. Wall thickness. 2. Weight and load bearing. 3. Overlay. 4. Whether the classification is smooth. 5. The ribs are polished and there is no white plucking. 6. Exhaust. 7. Miniature. 8. Flower board content. 9. Is there a non-slip design on the sole of the chair.

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What kind of Table Mould(FURNITUREMOULD) is a good mould? What we produce can only be considered by customers. For customers, when signing the contract, we mainly consider the following aspects: mould cost, mould production cycle and mould quality.

These three aspects are quite different for different users. For example, for users who develop their own products to provide plastic parts to the market, they may give more consideration to the cost and production cycle of table moulds. For mould users required by the complete machine factory, they may give priority to the production cycle and quality of moulds. For users of matching products supplied to the complete machine at fixed points, they may have a more comprehensive consideration on these three aspects.

For the cost of table mould, the user's requirement must be the lower the better under the premise of meeting the requirement, and the quality of the mould is mainly measured by the following criteria: mould yield, mould life and mould usability, etc. The precision and quality of the mould can also be measured by the precision and quality table of plastic parts, mainly including no surface defects, low surface roughness, bright or dull surface, high assembly dimensional precision, etc. Generally speaking, the quality of the table mould directly affects the quality of the plastic parts and the injection cost of the plastic parts, and the high-quality mould will definitely increase the manufacturing cost of the mould.

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1. Check if the plastic material in the barrel is correct and whether it is baked according to the regulations.

2. The cleaning of the material pipe should be thorough, in order to prevent the inferior compound or miscellaneous material from being injected into the Chair Mould(FURNITUREMOULD).

3. Adjust the pressure and the amount of injection to produce a finished product with satisfactory appearance.

4. Be patient and wait until the conditions of the machine and chair mould are stable.

5. The advancement time of the screw should not be shorter than the time when the plastic of the gate is solidified, otherwise, the weight of the finished product will decrease and the performance of the finished product will be damaged.

6. Run the newly transferred conditions for at least 30 minutes to stabilize, and then at least continuously produce a dozen full-mode samples, mark the date and quantity on the holder, and place them separately according to the cavity to test the stability of the operation. And derive reasonable control tolerances.

7. Compare the dimensions of each chair mould sample. Note:

(a) Whether the size is stable.

(b) Is there a tendency for certain dimensions to increase or decrease to indicate that machine processing conditions are still changing, such as poor temperature control or oil pressure control.

(c) Whether the change in size is within the tolerance range.

8. If the finished product size does not change and the processing conditions are normal, it is necessary to observe whether the quality of each finished product of the cavity is acceptable, and the size can be within the tolerance. Make a note of the number of holes that are continuous or large or smaller than the average to check if the size of the chair mould is correct.

At present, the mould temperature is often neglected during the test of the factory, and the temperature of the chair mould is the most difficult to grasp during the short-term test and future mass production. The incorrect chair mould temperature is enough to affect the size, brightness, shrinkage, flow pattern and material of the sample. And soon, if you do not use the mould temperature controller to hold the mass production in the future, it may be difficult.

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