January 19, 2021 in Travels
Plastic trash bins are very popular in our lives. Today we will talk about the demolding of plastic dustbin mould .
The traditional molding methods of plastic molded parts are roughly divided into four types: pushing, pushing, pulling, and rotating. Now there is the latest demolding technology that can easily solve the problem of plastic demolding. In the plastic mold industry, there are many unsolvable problems especially when a variety of resin compounds are used for highly complex designs and high gloss finish processing.
Nano release coating can form a coating on the surface of the plastic mold, or even on the surface of the plug-in of the plastic mold, which can significantly reduce the friction coefficient of these surfaces, and a highly glossy processing surface can be achieved without using traditional mold release agents. The design and plastic compound used to make the machine/tool maintenance downtime longer, resulting in low production yield.
Like plastic dustbin mould, plastic box mold can also use this molding method.
January 12, 2021 in Travels
My country’s plastic mold industry has gone through a long time from its inception to now, and it has also made great development, and the mold level has also been greatly improved. There have been certain improvements in various large molds, small molds, and precision plastic molds. plastic box mold , as one of many molds, can be seen from time to time in our daily lives, so we are constantly improving in terms of technology and finished products. Today we talk about the prevention of mold deformation during heat treatment.
For some sophisticated molds, pre-heat treatment, aging heat treatment, and tempering and nitriding heat treatment can be used to control the accuracy of the mold. When the nitriding heat treatment plant repairs mold blisters, pores, wear, and other defects, use cold welders and other repair equipment with low thermal impact to avoid deformation during the repair process. The mold structure design should be reasonable, the thickness should not be too large, and the shape should be symmetrical. Experts said that for the larger deformed mold, the defamation law should be mastered, and the machining allowance should be reserved. For large, precise, and complex molds, a combined structure can be used.
Molds such as plastic box mold and plastic dustbin mould are constantly improving. The gap between my country’s mold industry and foreign countries will only get smaller and smaller, and the world mold industry will definitely have a place in China.
January 5, 2021 in Travels
Children represent hope, represent the future, and represent all possibilities, so we always have strong illusions and expectations for children. In treating children, we will also take extra care and care. However, for children, we will always be negligent, such as food and toys. Carelessness may cause irreversible damage to children, so we need to pay special attention to the purchase at the beginning . As child building blocks mould is something that everyone will come into contact with at an early age. So, what should we pay attention to when choosing building block toys for children?
When choosing building blocks for your baby, you should also check the variable shapes of the building blocks. It is best to choose those building blocks with various shapes to see if there are irregular particles in the building blocks. If the building blocks are not the same The shape of this kind of building blocks will have many shapes.
When choosing blocks for your baby, please check whether the blocks are easy to store. Some components have only components and no other components. It is best to choose packaging with storage boxes to facilitate packing.
However, when choosing children’s building blocks, we will also pay attention to many other aspects. The above two points are definitely not enough.
December 29, 2020 in Travels
Although industrial pallets are not a common item in our daily life, they are not rare items, so we still have some knowledge and familiarity with industrial pallets. Industrial pallet forming technology has gradually become well-known. Today we take a look at three molding methods for Industrial tray molding .
First of all, the first is the injection molding method. The quality of plastic pallets produced by the injection molding method is relatively flat, with a smooth and rigorous appearance and greater freedom of product design. It can also be divided into double-sided integral plastic pallets and assembled plastic pallets.
The second is the extrusion molding method, which is similar to extrusion blow molding and general molding methods, because its products are larger and double-sided, requiring a larger model.
The third is the vacuum blister molding method. Vacuum blister molded plastic trays are divided into single-sided and double-sided. The single-sided is attached to the small motor and the wire reel for packaging and transportation. The recent development is relatively fast and the use is wider.
As the industrial pallet forming technology becomes more and more mature, my country’s technological level is getting better and better. So I hope to see more and more perfect industrial pallet molding technology in the future.
December 22, 2020 in Travels
Industrial tray molding is a method of injecting heated and molten materials into a mold, and then cooling and solidifying to obtain molded products. With the increase in the complexity and precision requirements of plastic products and the shortening of production cycles, traditional mold design methods that mainly rely on experience can no longer meet market needs. In terms of large, complex and small precision injection molds, my country still needs to import molds from abroad.
However, unlike wooden pallets or self-adhesive pallets, plastic pallets have the characteristics of light weight, high strength and repeatable processing, and have been widely used. Terry’s specially designed extrusion system can ensure uniform plasticization and stable molding. The addition of special extrusion screw micro-foaming technology, injection molding and other technologies can further reduce product weight, avoid product deformation and improve product performance.
Features of industrial pallet forming:
- Crystalline material. It has a low absorption temperature, and may melt and crack, and is easy to decompose when in contact with molten iron for a long time.
- Excellent fluidity, overflow value is about 0.03mm.
- The cooling speed is fast, and the dissipation of the pouring system and the cooling system should be slow.
- The molding shrinkage rate is large, the shrinkage rate is large, the shrinkage hole, the dent, the deformation is easy to occur, and the directionality is strong.
- Pay attention to controlling the molding temperature. The material temperature has obvious directionality, which is more obvious under low temperature and high pressure. When the mold is lower than 50°C, the plastic parts are not shiny and easy to produce poor welding. When the flow mark is 90 degrees or above, it is easy to warp and deform.
- Plastic parts should be flat behind the wall, avoid openings and sharp corners to avoid stress concentration.
Of course, industrial parts molds also have some characteristics of Industrial part mould . Although they are not the same, they are roughly the same.
December 15, 2020 in Travels
In summer, when the weather is not too hot, most people choose to use electric fans diligently at home. So, how much do you know about the blades of electrical fan mould ?
The working principle of the fan blades: When the electric fan rotates, the inclined blades will continuously squeeze the air from front to back and shear the air to generate wind. When the fan blades rotate, centrifugal force is generated, so the centrifugal force generates wind and is guided by the fan blades. When the fan blades form an angle of 45 degrees with the centerline, the wind speed is the highest and the wind direction is the most dispersed, at 90 degrees.
From a mechanical point of view, the number of blades is usually an odd number, and most use 3 or 5 blades. Odd-numbered blades will form an asymmetric resultant force. When one blade does not have dynamic potential energy, the other blades are in a potential energy state. A blade with potential energy can easily drive a blade without potential energy temporarily, which is beneficial to power saving.
The maximum size of Midea fan blades is ø335.50mmx 42.30mm, the average thickness of plastic parts is 3.20mm, the material of plastic parts is PP, and the shrinkage rate is 1.008. In the center of the plastic part, a stainless steel insert is designed, which is integrated with the plastic part to improve wear resistance. The technical requirements for plastic parts are that there must be no peaks, injection failures, streamlines, pores, warpage deformation, silver streaks, cold materials, injection lines, bubbles and other defects, and no mold release agent shall be used. Plastic parts are being molded.
In fact, when we choose some household appliances, the first thing we have to look at is the electrical appliance mould . If even the mold is not good, then most of the household appliances produced should also be bad, so the mold is very important.
December 8, 2020 in Travels
Many people who have seen TV sets should think that TV sets are assembled piece by piece, but did you know that TV sets are actually formed by molds? We usually call the mold for making a TV as a TV set mould . So do you know the difficulties encountered when making TV molds?
Electric discharge milling and “green” product technology. From the perspective of foreign electric processing machine tools, regardless of performance, process indicators, intelligence and automation, they have reached a very high level. At present, the new trend abroad is electric discharge milling. The development of this technology (electric spark generation technology) is a new technology that replaces the traditional forming electrode machining cavity. It uses high-speed rotating simple tubular electrodes for 3D or 2D contour processing (just like CNC milling), so there is no need to manufacture complex shaped electrodes. This is
December 1, 2020 in Travels
The electrical appliance mould is to make the blank into a mold and tool with a specific shape and size under the action of external force. It is widely used in punching, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, and the forming and processing of engineering plastics, rubber, ceramics and other products by compression molding or injection molding. In short, a mold is a tool used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the article by changing the physical state of the formed material. Known as the “Mother of Industry”.
The mold has a specific contour or cavity shape, and the contour shape with a cutting edge can be used to separate the blank according to the contour shape (punching). The application of the cavity shape can make the blank obtain the corresponding three-dimensional shape. The mold generally includes two parts: a movable mold and a fixed mold (or a convex mold and a concave mold), which can be separated or combined. The mold is a precision tool with a complex shape and can withstand the expansion force of the blank. It has high requirements for structural strength, rigidity, surface hardness, surface roughness and processing accuracy. The development level of mold production is one of the important signs of the level of mechanical manufacturing.
The hot runner mold uses a heating device to prevent the plastic in the pouring system from solidifying or demolding with the product, so it is also called a runner less mold. Advantages: (1) No waste. (2) The injection pressure can be reduced, and multi-cavity molds can be used. (3) The molding cycle can be shortened. (4) Improving the quality of products is suitable for the characteristics of hot runner molding compounds, (5) The melting temperature range of plastics is wider. At low temperature, it has good fluidity and at high temperature, it has better thermal stability. (6) It is sensitive to pressure and does not flow without pressure, but it can flow when pressure is applied. (7) Good specific heat, so as to cool down quickly in the mold.
Regardless of whether it is an electrical mold or a TV set mould , the only plastics available for hot runners are PE, ABS, POM, PC, HIPS, PS. The commonly used hot runners include heated runner molds and insulated runner molds. The steel plate used in the mold part of the hard mold needs to be heat treated, such as quenching and carburizing, to meet the requirements of use. Such an injection mold is called a hard mold. For example, the inner mold part uses H13 steel, 420 steel, and S7 steel. The steel used in the inner mold of the soft mold (below 44HRC) can meet the requirements of use without heat treatment after being bought. Such injection molding is called a soft mold. For example, the inner mold uses P20 steel, 420 steel, NAK80, aluminum, and beryllium copper.
November 24, 2020 in Travels
When the toilet was just beginning to become popular, most people didn’t know about hygiene awareness and threw paper towels directly into the toilet, which would cause the toilet to become clogged and, in severe cases, might be directly damaged. Later, as the toilet becomes more and more popular, more people will choose to put paper towels into the trash can or plastic boxes, which is hygienic and environmentally friendly. That being the case, before making plastic dustbins and plastic boxes, we must first have plastic dustbin mold and plastic box mold . However, our focus today is the classification of toilet waste. Let us take a look at it.
The first point is of course the nightmare of most girls with hair loss, that is, hair. When washing your hair or bathing, be careful not to let your hair enter the drain. Otherwise, they will be like fishing nets, netting all the passing impurities, and finally water can not pass through.
The second is cotton swabs and cotton balls. They are particularly difficult to break down and stick to fat. Over time, they will become bigger and bigger like a snowball, blocking drainage pipes.
The third is paint and construction waste, which mostly occur during decoration. The viscosity of the paint is very high. If it adheres to the sewer, it will stick to passing fat and toilet paper. Heavy construction waste, such as sand, gravel, glass pieces, etc., will be deposited at the bend of the U-shaped sewer pipe to provide a basis for food and toilet paper.
The fourth is food, but most people don’t throw food into the toilet trash unless there are special circumstances. A piece of bread or a few grains of rice will not cause any impact, but corn kernels, apple cores and other foods that are not easy to disperse will cause big troubles. They are like stones, which will become the basis for other easily clogged objects in the sewer.
The above is the general classification of toilet waste. For more information, please visit: plastic dustbin mould .
November 17, 2020 in Travels
Chairs can be said to be an indispensable piece of equipment in our lives. Although it is not outstanding, it does not seem to work well without it. There are various styles of chairs on the market and the materials used Each is different. Then, let us introduce this Plastic Stool Mould for everyone.
Meng Haoran, the representative poet of the landscape and countryside of the Tang Dynasty, once wrote: “Chu people don’t know each other, where can they ask for a chair.” The chair-wu refers to the phoenix resting on the parasol tree, and the chair represents rest. The image of the chair rest furniture is from the Hu bed. Many scenes in the Dunhuang frescoes reproduce the use of chairs and stools in the official and noble families during the Northern and Southern Dynasties. This shows the long history of chairs in our country. Plastic chairs on the market are generally made of PP or PE plastic.
PP plastic, also known as polypropylene plastic, is another excellent resin species after nylon. It is a semi-crystalline material with excellent mechanical properties and heat resistance, extremely high non-hydrophilicity, and almost no Water absorption is very advantageous. People who are not sages and sages can do nothing. Naturally, they have shortcomings. The shortcomings are poor low-temperature impact resistance and easy aging. But compared with PE plastic, PP plastic has a higher melting point.
PE plastic is polyethylene plastic, and its corrosion resistance and electrical insulation are very strong. Rigidity and strength are still relatively acceptable, and the same as PP plastic is that its water absorption is also small.
Plastic chairs are indispensable, so Plastic Chair Injection Moulds are naturally indispensable. Taizhou Saiweiyue Molding Co., Ltd. is a very good manufacturer of plastic chair injection molds.