Loading...
en

User blogs

advertisement
Tag search results for: "crate mould"
xiu

Different types of Chair Mould(FURNITUREMOULD), different types of moulded plastics (same type of mould), different assembly methods vary with different start and precision requirements. Therefore, the assembly drawing and part drawing should be carefully studied before assembly. Determine the assembly baseline by understanding the function, characteristics, and technical requirements of each component. After careful assembly, all quality indicators of the product have been achieved, including the accuracy of the mould movement and other technical requirements during use.

Assembly standard

Assembly data refers to the data used to determine the relative position of parts or components in a product during assembly. It can be broadly divided into:

(1) Main working parts, such as cores, cavities and inserts, shall be used as assembly reference parts;

(2) Take the template side base surface of the guide sleeve or mould as the assembly base surface.

2. Assembly accuracy

Assembly accuracy refers to geometric accuracy, machining accuracy, and motion accuracy after assembly. The assembly accuracy of the chair mould includes:

(1) mutual accuracy of each part, such as distance dimensional accuracy, coaxiality, equality, verticality, etc.;

(2) Relative motion accuracy, such as transmission accuracy, linear motion and rotational motion accuracy;

(3) matching accuracy and contact accuracy, such as matching gap and overflow contact conditions;

(4) The wall thickness of the plastic moulded part. When manufacturing a new mould, the wall thickness of the moulded part should deviate from the lower limit of the size.

Click Crate Mould to learn about more information.

xiu May 19 · Tags: chair mould, crate mould
xiu

The Chair Mould(FURNITUREMOULD) layout inspection project is an important part. In the face of the chair mould layout design, it is necessary to carefully analyze and study the layout design. After the completion of the layout design, it will be repeatedly reviewed to prevent cracks. Once found, improve the design and correct the errors in different parts of the layout to check and content. Different.

In general, the chair mould layout inspection items have the following types: 1 Check whether it is necessary to meet the required assembly position in the mould strength and open mode, and should minimize the empty station and check whether the material utilization rate is the best utilization plan. Precision parts can ensure the accuracy of the parts due to the feeding accuracy of the stripping material. The positioning accuracy and precision of the mould will affect the dimensional deviation of the parts. The size of the high-precision joints should be in the same position of the forming or take other measures to ensure the accuracy of the parts. Such as the flatness and verticality required for the product.

In addition to the chair mould structure, it should be noted that the necessary process should be added to ensure that the progressive die adaptive structure of more than four die structures is used for the splicing type of single piece, segment or sub-module, such as the determination of the chair mould structure should check the layout Whether it is suitable for the requirements of 5 bending depth stretching forming process, such as moulding, due to the flow of material, can cause material flow Oude hole and shape deformation material flow Oude hole and shape should be placed in the deformation process, or increase the dressing process from above Look at the project, the reliability of the carrier strength, the parts have formed parts have any influence on the feed, the burr direction is bending deformation, the curve line of the curved part material is vertical or 45°, e tc. These small also need to be checked in place"

Click Crate Mould to learn about more information.

xiu May 14 · Tags: chair mould, crate mould
xiu

Crate Mould(FURNITUREMOULD) design is an important part of the large-scale product development process. Because product and mould design are interdependent, it is useful for product design engineers and mould design engineers to understand the development of plastic parts, the mould design process, and the mould manufacturing process. Typical stages of product development include: product definition, product design, experience and product development, capacity enhancement, and marketing.

Although the product development process is complex, most have the following three key attributes:

1. Develop a systematic development plan to ensure the perfection of design and manufacturing.

2. Establish a checkpoint process to avoid risks by effectively assessing budget allocations in key areas of the project.

3. The product development process is divided into multiple stages through the approval fee level. The next phase evaluates the previous phase.

(1) Product definition

The product development process begins with an analysis of the market, an understanding of competitor product standards, a definition of product specifications, and an assessment of potential profits.

(2) Product design

If the project is approved and budgeted, the product development process will continue, often requiring additional funding and then further analysis and design.

(3) Development of business and production

Crate mould design and manufacturing is the focus of the plastics industry and is included in the “Mould Making” campaign.

(4) Zoom in and put into production

Use a high-level management review to verify that the design and production plan of the product being developed is clear.

(5) mould design function

Mould quotation, mould design, and mould manufacturing support large product development processes.

Click Dustbin Mould to learn about more information.

xiu

The runner supplies the plastic directly to the finished product and the runner adheres to the finished product. In the Crate Mould(FURNITUREMOULD) of the two plates, the large water outlet is usually one, but in the design of the crate mould of the three plates or hot runners, it can be a plurality of water outlets.

Disadvantage: The appearance of the finished product will be affected by the appearance of the watermark formed on the surface of the finished product.

The angle of the demolding nozzle and the length of the nozzle:

The diameter of the nozzle is affected by the diameter of the nozzle. The spray angle of the nozzle should not be less than 3 degrees. Therefore, only the length of the nozzle can be shortened, and the length of the nozzle can be lengthened.

Gate selection:

The gate is the connection between the runner and the cavity and is the last part of the crates mould supply system. Its basic functions are:

The molten plastic from the runner enters the entire cavity as quickly as possible.

After filling the cavity, the gate can be quickly cooled and closed to prevent the cavity from flowing back uncooled plastic.

Click Dustbin Mould to learn about more information.

xiu

The design of the gate is related to the size of the plastic part, the shape and the mould structure of the Crate Mould(FURNITUREMOULD), the conditions of the injection moulding process and the performance of the plastic part. However, in terms of basic functions, the gate portion should be small and the length should be short, as this is the only way to increase flow rate, rapid cooling and sealing, separation of plastic parts and minimal residual marking.

Regardless of whether the product is filled or not, the flow length determines the injection pressure, and the clamping force and shortening of the entire flow length reduce the injection pressure and clamping force.

The gate position will affect the pressure holding pressure, the pressure holding pressure and the pressure maintaining pressure balance. Keep the gate away from the stress position of the product (eg bearing position) to avoid residual stresses. Exhaust gas must be considered at the gate location to avoid wind accumulation.

If there is no balanced runner system, the following gate balancing method can be used to achieve the goal of uniform injection moulding. This method is suitable for crates moulds with a large number of holes.

There are two ways to balance the gate: change the length of the gate trench and change the cross-sectional area of the gate. In another case, the balancing door is also required when the chambers have different projected areas.

At this point, in order to determine the size of the gate, it is necessary to determine the size of one of the gates, find the ratio of its gate volume to the corresponding cavity volume, and apply the ratio to the gate and the corresponding gate comparison cavity, and then calculate The size of each door.

Click Dustbin Mould to learn about more information.

xiu

For crate mould, we pay more attention to Crate Mould(FURNITUREMOULD) design in order to obtain crate mould in a sufficient cooling system. This will allow the box mould to avoid zone hot pots and achieve uniform cooling for rapid cycle moulding. In addition, we offer a good slat ventilation solution design for the crate handling area and the crates strength points.

Through the processing of crates, the Chinese team values ??the size control of the crates, so that each part is in good working condition. It keeps the mould within the tolerances of the tool and does not cause any scratches. With these, we keep our crate mould faster than our competitors. In addition, we are confident to run our crate mould and mass production simulation process, confirm the cycle time and then ship it to you.

Taizhou Huangyan Rongwei Plastic Mould Co., Ltd.is located in Huangyan, which is the mould town in China. Our company has more than 20 years of professional experience in mould field. We have the most advanced equipment for mould manufacturing as well as the most qualified trained employees. We have made full use of high techniques as CAD/CAM/ CAE for a long time and summarized a set of specific experience. Our mould is mainly exported to the countries in Europe, Mid-East, Africa and so on.

Click Dustbin Mould to learn about more information.

xiu

Standard Crate Mould(FURNITUREMOULD) temperatures help ensure uniform heat exchange on each wall surface. This may put the components in equilibrium and the wall thickness of the supply is uniform. The basic elements of management. Crate mould should be developed to adequately manage temperatures from the range required for material processing. This not only reduces the amount of residual tension but also reduces cycle time.

Technologies to get the right core cooling to include:

Baffle

Spherical cooling channel for cavity and core insert

Extremely conductive alloy

Foaming

Any of these techniques are suitable to provide a heat removal capability sufficient to maintain a uniform temperature along the length of the core. Even if proper core cooling can have an impact on crate mould manufacturing costs, as long as the crates are put into production, it can reduce cycle times and improve part quality.

Baffles and bubblers are two of the most typical techniques used to provide core cooling. With this configuration, a thin blade is inserted from the hole along the length. This divides the bore into two semi-circular flow channels. Water moves from inside the core of one side of the baffle blade and then slightly lower from the other side of the blade.

The bubbler is very similar to the baffle except that water passes from the core with the bubble tube towards the finisher. Water returns from the core through the annular space between the bubbler tube OD and the core ID.

Click Dustbin Mould to learn about more information.

xiu

Design parts to ensure that the Crate Mould(FURNITUREMOULD) is properly cooled, and you can reduce cycle times and high-quality parts while reducing the price. Good cooling is critical when proposing crates.

Some results of poor cooling:

Increased cycle time

Uneven cooling between parts or parts

High residual tension

Increased warpage

Adhesives and problems in ejection

Even though all of the above problems can be serious problems, the most typical difficulties may be stay and ejection problems. We are unable to fully pay attention to the importance of crate mould cooling, especially in cores. By following the powerful core cooling principles, you can significantly improve the processing window and achieve good results in terms of overall component performance.

An effective and critical cooling method is to ensure that there is turbulent water flow in the cooling circuit. When the water stream is laminar, the heating from the crate mould only enters the outer layer from the water as it flows through the channels. The outer water does not mix with the cooler inner layer and does not fully utilize cooling.

Click Dustbin Mould to learn about more information.

xiu

The temperature of the Crate Mould(FURNITUREMOULD) affects the overall cycle, shrinkage, warpage and different characteristics of the cast components. Copolyesters require cooler moulds than many different plastics, so predicting cooling requirements in advance (ie, through injection mould blueprints) pays off in terms of reduced cycle time and processability. Higher crate mould temperatures can cause adhesion. Uniform local hot spots where adhesion may occur increase the cycle.

In order to reduce the entrance blush, unfolding or all, the filling speed for the copolyester is reduced compared to many different plastics. A machine with filling speed programming capability is recommended.

The screw should be operated at the lowest speed so that it can recover 3-6 seconds before the crate mould opens. This reduces viscous heat generation, which has a tendency to standardize the melt and reduces dead time.

A typical problem with direct gate assemblies is usually to reduce the gap on the basis of the runner. A long hold time of 8.1-12.1 seconds and a minimum holding pressure of 276-551 bar (4,000-8,000 psi) (nozzle polymer tension) will supply the polymer to the injection port at a rate at which voids are removed, but will not an over-inject package. In general, if the cooling timer is reduced by the amount of increase in the hold timer, there is no need to extend the cycle time. At the junction of the runner and the suction pin, the standard runner can also form a constricted void; this can be eliminated by utilizing the aforementioned method.

Cushion size

The buffer size should be large enough to ensure that the screws do not touch the base and that the packaging and holding pressure is transmitted to the part. Depending on the machine size and injection speed, the mat remaining after the cycle of packaging and holding is typically 3-13 mm (0.125-0.5 inches). Larger mats increase the residence time in the barrel and cause deterioration. After the shooting, the screw continues to move forward to indicate the drip check valve. The drip check valve will be retained to avoid cushioning and may result in random fast shots and shot changes.

Back tension

A typical back tension is 7 -4 -10 C column (100-150 psi), although it may be a minimum of 3.5 bar (50 psi). To increase melt uniformity, increase melt heat or eliminate air retention (air expansion), backside tension can be increased to 28 bar (400 psi). Excessive back pressure can cause the drool to be directly exacerbated into the crate mold because the decompression is usually kept to a minimum.

Usually, a small decompression is used. Decompression may pull the back of the air directly into the nozzle, causing the spray in the spray. A small amount of reduced pressure can be used to reduce drooling.

Click Dustbin Mould to learn about more information.

xiu

Unless an alternative surface treatment is required, all of the Crate Mould(FURNITUREMOULD) surfaces should be highly polished in terms of drawing for cavity and punching. Gate bushings and runners should also be highly polished by flow to aid in the streamlined flow of the polymer and prevent these trends from "bounce."

Chrome plating can be used to improve hardness and corrosion resistance and to improve the release of moulded parts. The degree of finishing depends to a large extent on the amount of polishing before placement. Plating will never improve the surface, it will only add to the bad surface.

Use very corrosive materials such as PVC and certain types of thermoplastic rubber. Stainless steel is often used to combat corrosion. Unfortunately, even the best stainless steel alloys contain impurities and localized iron (iron) regions. These will soon be corroded by corrosive materials, causing pitting on the surface of the steel. With long-running tools, it is recommended to use a cavity area made of stainless steel to prevent this possibility. If a lion stainless steel mould is to be used to mould the corrosive material, the moulding surface must be chrome-plated and the remainder of the tool chrome-plated to protect it.

Click Dustbin Mould to learn about more information.

Pages: 1 2 Next
advertisement