Junying Die Casting Company
The primary consideration for a hot runner mold
Dec 20, 2018
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The following are the primary considerations when considering hot runner molds against cold runner molds, encompassing some matters related to an elaborate cost breakdown.
When you are contemplating using hot runner molds for your following injection molding project, you may be measuring the benefits against the costs. The cost of building a hot runner mold is usually high, but the return on investment makes the cost worthwhile. The following are a few of the certainly critical considerations when one considers hot runner molds.
Eliminate expensive runners
The elimination of expensive runners is one of the remarkable benefits generated from hot runner molds. Hot runner tools can achieve a quick return on investment, although the design of the cold runner molds would result in large runner waste. This is typically correct if the part itself is small or if it is being molded in miniature and the runner is usually larger than the molded part or parts.
If your resin is a special raw material, it will be more advantageous to pay more for the hot runner tool, and will not waste expensive raw material plastic resin and save a lot of money. If the work is expected to support mass production requirements over a longer period of time, the material savings can be significant, especially in the case that you cannot reuse the runner for regrinding.
A rapid cost breakdown should be able to show the material savings compared to cold runner tools. Ex Mould can help you make a decision on your cost savings through the design of the hot runner tool.
Improve the geometric tolerance
In the cold runner tool, raw materials flow into the mold cavity of the forming part through the runner system rather than be introduced directly into the mold cavity through the nozzle in a hot runner tool. By introducing the material directly into the cavity, the cavity is filled and packaged at greater pressure; as a result, the process of filling into critical dimensions is well improved.
The improved hot runner mold pressure can improve the quality of the tight tolerance components that require critical fill areas. Ex Mould has rich experience in hot runner mold design, with small geometric tolerance, to meet customer's strict specifications.
Shorten cycle time
Because of the pressure increase in filling and packing, the hot runner tool commonly creates a faster cycle time. The reduction in cycle time is equivalent to an increase in the profit of large scale production, which can yield thousands of dollars in annual returns and increased efficiency even in a matter of a few seconds.
Today, the majority of OEMs need continuous improvement programs along with cost savings in both cycle time, and automated efficiencies. The cost reductions can be numerous what time calculating the cycle time of a multi-cavity mass production operation.
The Program cavitation, volume and life expectancy are essential considerations in assessing the cost reductions of a shorten cycle time from a hot runner mold.
Gate position flexibility
In the design of a hot runner tool, the injection mold designers would have certain flexibility in confirming the best gate location to make true corresponding filling and packing. In parts of high visibility, gate location is very critical to aesthetics, as same as part function.
For the hot runner tools, there are two kinds of gating mechanisms. A hot tip gate is also known as a thermal gate, and the other kind is a valve gate. Using a hot tip gate, the material will harden at the tip of the nozzle, allowing the parts to leave from the tip for injection. This leads to a visible gate mark, or a small vestige, which protrude from the part. If any gating vestige affects the function of the component, this visible gate mark can be remedied by adding a gate well or dimple.
In the design of a valve gate, the valve slides through in front of the nozzle tip before its injection, which helps to spray material at the tip of the nozzle that is not fully solidified. In general, larger gate sizes can be achieved to facilitate material processing and cycle time. The valve gate may leave a trace of the location of the gate, but remain no trace of the gate.
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Hot runner molds have many advantages under suitable conditions and environment. Ex Mould is a professional manufacturer of complex, tight tolerable cold and hot runner molds that meet OEMs' high requirements worldwide. We can help you come out the most cost-effective mold design for your injection molding project.
Ex Mould owns experienced designers and engineers, who have in-depth knowledge and extensive experience in designing and producing precision hot runner tools. As an ISO registered mold making fabricator, we produce injection molds with high quality, which meet strict customer requirements. Please contact us without hesitation for a free cost breakdown of your following mold making job.
When you are contemplating using hot runner molds for your following injection molding project, you may be measuring the benefits against the costs. The cost of building a hot runner mold is usually high, but the return on investment makes the cost worthwhile. The following are a few of the certainly critical considerations when one considers hot runner molds.
Eliminate expensive runners
The elimination of expensive runners is one of the remarkable benefits generated from hot runner molds. Hot runner tools can achieve a quick return on investment, although the design of the cold runner molds would result in large runner waste. This is typically correct if the part itself is small or if it is being molded in miniature and the runner is usually larger than the molded part or parts.
If your resin is a special raw material, it will be more advantageous to pay more for the hot runner tool, and will not waste expensive raw material plastic resin and save a lot of money. If the work is expected to support mass production requirements over a longer period of time, the material savings can be significant, especially in the case that you cannot reuse the runner for regrinding.
A rapid cost breakdown should be able to show the material savings compared to cold runner tools. Ex Mould can help you make a decision on your cost savings through the design of the hot runner tool.
Improve the geometric tolerance
In the cold runner tool, raw materials flow into the mold cavity of the forming part through the runner system rather than be introduced directly into the mold cavity through the nozzle in a hot runner tool. By introducing the material directly into the cavity, the cavity is filled and packaged at greater pressure; as a result, the process of filling into critical dimensions is well improved.
The improved hot runner mold pressure can improve the quality of the tight tolerance components that require critical fill areas. Ex Mould has rich experience in hot runner mold design, with small geometric tolerance, to meet customer's strict specifications.
Shorten cycle time
Because of the pressure increase in filling and packing, the hot runner tool commonly creates a faster cycle time. The reduction in cycle time is equivalent to an increase in the profit of large scale production, which can yield thousands of dollars in annual returns and increased efficiency even in a matter of a few seconds.
Today, the majority of OEMs need continuous improvement programs along with cost savings in both cycle time, and automated efficiencies. The cost reductions can be numerous what time calculating the cycle time of a multi-cavity mass production operation.
The Program cavitation, volume and life expectancy are essential considerations in assessing the cost reductions of a shorten cycle time from a hot runner mold.
Gate position flexibility
In the design of a hot runner tool, the injection mold designers would have certain flexibility in confirming the best gate location to make true corresponding filling and packing. In parts of high visibility, gate location is very critical to aesthetics, as same as part function.
For the hot runner tools, there are two kinds of gating mechanisms. A hot tip gate is also known as a thermal gate, and the other kind is a valve gate. Using a hot tip gate, the material will harden at the tip of the nozzle, allowing the parts to leave from the tip for injection. This leads to a visible gate mark, or a small vestige, which protrude from the part. If any gating vestige affects the function of the component, this visible gate mark can be remedied by adding a gate well or dimple.
In the design of a valve gate, the valve slides through in front of the nozzle tip before its injection, which helps to spray material at the tip of the nozzle that is not fully solidified. In general, larger gate sizes can be achieved to facilitate material processing and cycle time. The valve gate may leave a trace of the location of the gate, but remain no trace of the gate.
Feedback sending
Hot runner molds have many advantages under suitable conditions and environment. Ex Mould is a professional manufacturer of complex, tight tolerable cold and hot runner molds that meet OEMs' high requirements worldwide. We can help you come out the most cost-effective mold design for your injection molding project.
Ex Mould owns experienced designers and engineers, who have in-depth knowledge and extensive experience in designing and producing precision hot runner tools. As an ISO registered mold making fabricator, we produce injection molds with high quality, which meet strict customer requirements. Please contact us without hesitation for a free cost breakdown of your following mold making job.
