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Manufacturing method of automatic gravimetric and blended device for injection molding raw materials


source:[Gravimetric blender]   release time:2021-05-12 10:07:35




The utility model relates to an accessory device of an injection molding machine, in particular to an injection molding raw material blended device.
Background technique:
With the rapid development of electrical appliances, automobiles, logistics and other industries, one-shot injection molded parts have been widely used. In the injection molding process of thermoplastic parts, the raw materials used to inject the other parts are generally granular and are mixed with several components. They usually include natural color materials, color master batches, recycled materials and additives. This color material is the base material that constitutes the injection molding parts, and it accounts for the largest proportion; the color masterbatch plays the role of dyeing, so that the injection molding parts show colorful and different colors, and it accounts for a small proportion; the recycled material is composed of waste gates, The proportion of recycled waste material that is crushed from waste parts is not large, and the addition amount must be strictly controlled; the role of additives is to make up for the lack of characteristics of the base material, so as to improve the mechanical physics of the injection molding parts. performance. Before the injection molding raw materials are injected into the hopper of the injection molding machine, they must go through a blended process. The traditional blended method is to manually weigh the original color, color masterbatch, recycled materials and necessary additives according to the proportion required by the process regulations, and then put the weighed raw materials into a large container. Inside (with a stirring head) for blended and stirring. The mixed raw materials after such stirring are then added to the hopper of the injection molding machine, for example, sucked by a suction machine or poured into the hopper manually, and then the injection molding process of another part is started.
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The above-mentioned blended process is an important raw material pretreatment process in the injection molding process of plastic workpieces. If the process requirements are not met, the quality defects of the injection molded parts or even serious quality defects will occur. The traditional blended method is difficult to meet the standard requirements. It is mainly manifested in two aspects. One is the inaccurate weight of the manual blended, which will cause the proportion of the raw material components to fail to meet the process requirements, resulting in the mechanical and physical properties of the injection molded parts. The performance does not meet the quality standards, such as brittleness, insufficient strength, or even lack of ribs or too dark or light colors; second, uneven blended, resulting in surface quality defects of injection molded parts, such as color difference, silver streaks, etc.
Summary of the invention
The purpose of the utility model is to overcome the shortcomings of the prior art and provide an automatic blended injection molding raw material blended device, which realizes automatic control of the blended and blended of injection molding raw materials, and achieves the requirements of accurate composition ratio and uniform blended of each raw material, thereby Improve and guarantee the process quality of injection molded parts.
The technical solution of the utility model to solve its technical problem is an automatic blended injection molding raw material blended device, which includes four containers for respectively placing recycled materials, natural color materials, color master batches and additives, an automatic blended device, A computer control system and a mixer, the containers are arranged side by side at the top, and the top of the container is an opening that can be used for filling and an openable and closable container cover. The lower parts of the four containers are provided with a discharge port connected to the A mixer, the mixer is located below the container, the top has an opening communicating with the discharge port of the container, the automatic blended device is arranged on the side of the mixer near the end of the container, and the computer control system is arranged at The rear side of the mixer has an electronic control circuit leading to the automatic blended device and the mixer.
The number of containers of the automatic blended injection raw material blended device of the present invention can be four or more.
Compared with the prior art, the beneficial effect of the utility model is that through the automatic control of the blended and blended of the injection molding raw materials, the purpose of accurately controlling the composition ratio of the raw materials and the uniform blended is achieved, thereby improving and ensuring the process of the injection molding. quality.
Figure 1 is a schematic diagram of the structure of the utility model
Detailed ways
The present utility model will be further described below in conjunction with specific embodiments.
Please refer to Figure 1 for a schematic structural diagram of the present utility model. The automatic blended injection molding raw material blended device shown in the figure includes four containers including the recycled material container 1, the natural color material container 2, the color master batch container 3, and the additive container 4, as well as the automatic blended device 6, the computer control system 5 and Mixer 7; the above-mentioned four containers are arranged side by side at the top of the entire device, each container 1, 2, 3, 4 is provided with an opening 8 for filling at the top, and each opening is provided with a container that can be opened and closed Cover 9, all the lower part of the container has a discharge port 10 leading to the mixer 7, the four containers 1, 2, 3 and 4 are successively filled with recycled materials, natural color materials, color master batches and additives. The number of containers can be more than four, and more injection molding raw materials are placed as the blended components of the raw materials; the above-mentioned mixer 7 is located below the containers 1, 2, 3, 4, and the top is provided with an opening 11 and containers 1, 2 The discharging port 10 at the lower part of, 3, and 4 is connected; the automatic blended device 6 is set on the side of the mixer 7 near the end of the container 1, 2, 3, 4, and the computer control system 5 is set on the back of the mixer 7 , It has an electronic control loop leading to the automatic blended device 6 and the mixer 7 to control the blended of the automatic blended device 6 and the blended speed and time of the mixer 7 according to the control signal output by the computer control system 5 .
During the operation of the utility model, firstly, the recycle material container 1, the natural color material container 2, the color master batch container 3 and the additive container 4 are respectively added with the corresponding kinds of injection molding materials by the suction machine or manually, and then the container cover 9 Cover it. Before the automatic blended injection molding raw material blended device is operated, the computer control system 5 is inputted in the computer control program written according to the requirements of the process regulations, and parameters such as the ratio of various materials and the blended time and speed are preset. After the device is started, the above-mentioned computer control program can control the automatic blended device 6 through the connected electronic control loop to accurately weigh the various injection molding materials in the container one by one according to the weight ratio required by the process, and from the discharge port at the lower part of the container Put it into the mixer 7; then the mixer 7 receives instructions from the computer from the electronic control loop connected to the computer control system 5, and mixes the various injection materials evenly at the speed and time arranged by the computer program. The uniformly stirred injection molding materials enter the hopper of the injection molding machine through the injection port at the bottom of the mixer 7. Due to the effect of the computer control system 5 on the automatic blended device 6 and the mixer 7, the various raw materials in the mixer 7 can be mixed in a precise weight ratio and achieve a fully uniform effect, thereby improving injection molding The qualified rate of parts. During the entire operation process, once an abnormal situation occurs in the entire device, the computer control system 5 will get feedback and adjust the process parameters, realize the cycle monitoring of the entire process, and improve the process quality of injection molding.
Claim 1. An automatic blended type injection molding raw material blended device, characterized in that it includes four containers for respectively placing recycled materials, natural color materials, color master batches, and additives, an automatic blended device, and a computer control system And a mixer, the container is arranged side by side at the top, the top of which is an opening that can be used for filling and an openable and closable container cover, the lower part of the four containers is provided with a discharge port connected to the mixer , The mixer is located below the container, the top has an opening communicating with the discharge port of the container, the automatic blended device is arranged on the side of the mixer near the end of the container, and the computer control system is arranged on the mixer On the rear side, it has an electronic control loop leading to the automatic blended device and the mixer.
2. The automatic blended type injection raw material blended device according to claim 1, characterized in that the number of the containers is more than four.
Patent Abstract This utility model discloses an automatic blended injection molding raw material blended device, which includes four containers for respectively placing recycled materials, natural color materials, color master batches and additives, an automatic blended device, and a computer control system And a mixer, the container is arranged side by side at the top, the top of which is an opening for filling and an openable and closable container cover, and the lower part of the container is provided with a discharge port connected to the mixer. The feeder is located below the container, with an opening on the top communicating with the discharge port of the container. The automatic blended device is installed on the side of the mixer near the end of the container. The computer control system is installed on the back of the mixer. The electronic control circuit of the automatic blended device and the mixer. The utility model realizes the automatic control of the blended and blended of the injection molding raw materials, and achieves the purpose of accurately controlling the composition ratio of each raw material and the uniform blended, thereby improving and ensuring the quality of the injection molding process, and can be used in the injection molding process of the thermoplastic injection molding. .[Gravimetric blender]