Mold opening: all rubber products must be made into molds before they can be made into new products through molds.
The sample module is also called the hand module. When the customer confirms to cooperate with us and asks us to take samples, we first need the customer to provide samples or 2d or 3d drawings. If the customer provides a template, we will obtain a 3d map after taking the number of samples according to the template. If the customer provides a 3d drawing, then it is more convenient. our mold master will program mold opening according to the 3d drawing provided by the customer. It is usually to open a sample model to make the customer confirm, and then open a large model for production after the customer confirms that there is no problem.
The sample mold usually opens 1 to 2 holes. when the sample is needed, our sample mold will also open 4 holes. The sample module serves as a confirmation of the initial sample. it turns the drawing file into a physical object. Because of the elasticity of silica gel, the products produced do not necessarily match the drawings exactly. at this time, we only have to open a sample mold first and send out samples for the guests to confirm. If there is a problem with the sample mold, it is also relatively simple to modify the mold at this time. the modification time is short and the efficiency is high. Every time the mold is opened, the mold must be repaired through proofing to confirm the product, that is, to confirm the mold. When the product was developed to meet the requirements of the guests, the mold was confirmed.
Raw materials for sample molds:
Our company’s sample molds are all made of steel. The size of the template is determined according to the size of the product. Templates with length * width * height of 300 mm * 300 mm * 30 mm are usually used.
Production time of sample mold
The length of time for making the sample mold is determined by the structural complexity of the product. Generally, it takes about 2 – 3 days for simple products to be programmed and processed. The complexity is about 5 – 7 days. The more complex the product structure is, the longer it takes to open the mold.
Benefits of opening sample mold:
First of all, the sample mold has fewer holes, fewer templates and shorter processing time, thus the cost is relatively small and the efficiency is high. Secondly, opening the sample mold can also bring some other benefits. for example, even if the product structure is not confirmed for the first time, it is more convenient to modify the mold. after modification, the sample can be confirmed immediately, thus shortening the time. Thirdly, because the cost is low, opening the sample mold first can reduce the risk. If the large mold is directly opened, the sample cannot be confirmed again for the first time. when the modified mold is used to produce personalized silicone bracelets, there will be many quality problems. in this case, the mold will only be repaired more and more bad, and the repair will be more and more unfavorable to production. Therefore, opening a sample mold can achieve the goal of first confirming the product. once it is confirmed that there is no problem, the large mold can be opened at once. thus, the product produced has few quality problems.
Key process control instructions
1 ) color matching
Using precision electronic scales and other equipment, according to the color depth required by the product technology, measure the color master and coloring agent that match the production volume.
2 ) plastication
Explain the long chain molecules of raw rubber. the process of forming plasticity is called plastic chain. There are two methods of raw plastic chain: mechanical plastic chain and thermoplastic chain. Mechanical plastic chains make the degradation of long chain rubber molecules shorter and change from a high elastic state to a plastic state by the mechanical extrusion and friction of the plastic chain machine at a temperature not too high. Thermoplastic chains are made by introducing hot compressed air into raw rubber to shorten the degradation of long chain molecules under the action of heat and oxygen, thus obtaining plasticity. Plastic chain of raw rubber according to specific technical requirements
3 ) mixing
In order to adapt to different conditions of use and obtain different properties, as well as to improve the properties of rubber bracelets canada and reduce costs, different compounding must be added to the raw rubber. A process of mixing raw rubber and compounding agent after rapid mixing, placing them in a rubber mixing machine, and completely and uniformly dispersing the compounding agent in the raw rubber through mechanical mixing and cooperation. According to the specific performance required by the product in the production plan, add appropriate and appropriate amount of compounding agent to achieve the required purpose.
4 ) molding
In the production process of rubber products, various technological processes with different shapes and sizes are made in advance by using a calender or extruder, which is called molding. Calendering is suitable for making simple sheet and plate products. It is a method of rolling and forming a film with a certain shape and a certain size by mixing through a calender. Extrusion molding is a method of continuously molding rubber compound with certain plasticity through various die shapes ( also called templates ) under the extrusion of screws in the hopper of an extruder. Compression molding can also be used to manufacture some rubber products with complicated shapes ( such as leather cups and sealing rings ). with the help of the formed female and male molds, the rubber compound can be placed in the mold and heated for molding. According to the technical requirements in the production process, the silicone bracelets are treated concretely.
5 ) vulcanization
The process of converting plastic rubber into elastic rubber is called vulcanization. a certain amount of vulcanizing agent ( such as sulfur, vulcanization accelerator, etc. ) is added to the semi-finished product made of raw rubber ( carried out in a vulcanizing tank ), heated and insulated at a specified temperature, so that linear molecules of the raw rubber are intersected and linked into a three-dimensional network structure through the formation of ” sulfur bridges”, thus making the plastic rubber compound into vulcanized rubber with high elasticity. Strictly control the vulcanization time and temperature according to the requirements of the production technology to achieve the required various indexes.