A color-mixing dual-tube injection molding machine for shoe production

Abstract

This utility model discloses a color-mixing dual-tube injection molding machine for shoe production, relating to the field of injection molding technology. The utility model includes an injection molding machine body, which includes a spiral conveying pipe. A heating device is provided on the outer periphery of the spiral conveying pipe, and a cooling pipe is provided on the outer periphery of the heating device. A cooling pipe wall is provided on the outer periphery of the cooling pipe, and an inlet pipe and an outlet pipe are provided on the side of the cooling pipe wall. This utility model, through the design of a spiral cooling pipe wound around the heating device of the injection molding machine and the efficient cooperation between an infrared sensor and a solenoid valve, enables the external circulating cooling water system to quickly cool the injection pipe when changing injection molding materials. Furthermore, when the solenoid valve of the inlet pipe receives an electrical signal from the infrared sensor in the feed hopper, the solenoid valve can automatically adjust the cooling water flow rate according to the material height, matching the cooling intensity with actual production needs.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to a color-mixing dual-tube injection molding machine for shoe production. Background Technology

[0002] Injection molding machines, as the primary molding equipment for plastic products, possess numerous significant advantages. They integrate mechanical, hydraulic, and electrical systems, achieving a high degree of automation. They excel in production efficiency, rapidly completing the molding process of plastic products and significantly increasing production speed. Furthermore, their products require minimal post-processing, effectively saving subsequent processing costs and time. Moreover, injection molding machines are highly adaptable; whether using thermoplastics or thermosetting plastics, they can be molded into complex shapes, precise dimensions, and even dense plastic products with metal inserts using plastic molding dies. They are widely used in various fields such as defense, electromechanical, automotive, and packaging, powerfully driving the development of numerous industries.

[0003] A search revealed that the publication number CN113942199A discloses "A Cooling Structure for an Injection Molding Machine." This invention discloses a cooling structure for an injection molding machine, including a fixed mold and a moving mold. A mold cavity is formed in the middle of the right end face of the fixed mold, and a mold core corresponding to the mold cavity is provided in the moving mold. A cooling groove is formed from the right end face to the left end face of the fixed mold, and a first pipe groove and a second pipe groove are formed at intervals from the front end face to the rear end face of the fixed mold. The first pipe groove and the second pipe groove are respectively connected to the cooling groove. Multiple cooling pipes are coiled in the cooling groove, which can make the mold cavity cool evenly and avoid uneven heat dissipation affecting product quality.

[0004] There is a problem with the aforementioned comparative documents. Specifically, existing injection molding machines are equipped with heating devices for injection materials to heat the raw materials to a supercritical state before injection into the mold. However, the supercritical molten plastic causes the temperature of the injection tube to rise rapidly. When the raw materials are changed after use, the injection tube needs to be cooled again until it returns to a normal temperature before it can be used again. However, if the injection tube cools down naturally, it takes a long time, during which time the injection tube cannot be used, significantly increasing the work cycle. In view of this, the inventors urgently need to design an intelligent cooling mechanism that facilitates the cooling of the injection tube to improve the efficiency of the injection molding machine. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a dual-tube injection molding machine for shoe production to solve the technical problem of long cooling time of the injection tube in the injection molding machine.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a dual-tube injection molding machine for shoe production, comprising an injection molding machine body, the injection molding machine body including a spiral conveying pipe, a heating device provided on the outer periphery of the spiral conveying pipe, a cooling pipe provided on the outer periphery of the heating device, a cooling pipe wall provided on the outer periphery of the cooling pipe, an inlet pipe and an outlet pipe provided on the side of the cooling pipe wall, the inlet pipe and the outlet pipe being connected to the cooling pipe wall via flange connectors, an electromagnetic valve for controlling the cooling water flow rate being provided at the inlet pipe, a feed hopper being provided at the beginning of the spiral conveying pipe, and an infrared sensor for measuring the height of the raw material inside the hopper being provided inside the feed hopper.

[0007] By adopting the above technical solution, firstly, the spiral conveyor pipe included in the main body of the injection molding machine provides a channel for raw material transportation, and the heating device on the outer periphery can heat the raw material to a molten state to meet the injection molding requirements; the cooling pipe and the cooling pipe wall form a cooling system, which can quickly reduce the temperature of the spiral conveyor pipe when needed, solving the problem of long natural cooling time; the inlet and outlet water pipes are connected by flange connectors to ensure the cooling water circuit is sealed and stable, and the solenoid valve can control the cooling water flow rate to achieve flexible adjustment of cooling intensity; the infrared sensor in the feed hopper can monitor the raw material height and promptly remind the user to replenish the raw material to avoid production interruption due to insufficient raw materials.

[0008] Furthermore, the cooling pipe is spirally wound around the outside of the heating device.

[0009] By adopting the above technical solution, firstly, the cooling pipe is spirally wound outside the heating device, which greatly increases the contact area with the heating device, allowing the cooling water to absorb heat more fully during the flow process, avoiding insufficient local cooling, ensuring uniform cooling of all parts of the spiral conveying pipeline, and preventing the impact of excessively high local temperatures on subsequent raw material replacement or equipment performance.

[0010] Furthermore, the infrared sensor is model E3Z-LS86, and the solenoid valve receives the electrical signal from the infrared sensor.

[0011] By adopting the above technical solution, firstly, the infrared sensor of model E3Z-LS86 has accurate detection capabilities and can accurately measure the height of the raw material in the feed hopper, providing an accurate basis for raw material replenishment and avoiding the impact of too much or too little raw material on the production rhythm. At the same time, the solenoid valve can receive the electrical signal from the infrared sensor, realizing the linkage control between the raw material status and the cooling system.

[0012] Furthermore, the end of the spiral conveying pipe is provided with an injection nozzle, the end of which is connected to an injection mold, and the injection mold is provided with a moving mold and a fixed mold.

[0013] By adopting the above technical solution, firstly, the injection nozzle at the end of the spiral conveying pipe can accurately deliver the molten raw material to the injection mold, ensuring the accuracy and uniformity of the raw material injection, reducing raw material waste, and improving the product molding precision. At the same time, the moving mold and fixed mold set in the injection mold can stably form during the two-material injection process, ensuring that the two raw materials are fully combined in the mold, ensuring the integrity and consistency of the product structure, and the opening and closing design of the moving mold and fixed mold facilitates the removal of the finished product.

[0014] Furthermore, a control console is provided on the side of the main body of the injection molding machine.

[0015] By adopting the above technical solution, firstly, the control console on the side of the injection molding machine can centrally control the core components of the equipment, such as adjusting the heating temperature of the heating device, setting the working parameters of the solenoid valve, and monitoring the detection data of the infrared sensor, which simplifies the operation process and reduces the difficulty of the operator's work.

[0016] Furthermore, the cooling pipe can have two, but is not limited to, two density characteristic forms.

[0017] By adopting the above technical solution, firstly, the cooling pipe has two or more density characteristics, which can be flexibly selected according to the cooling needs of different production scenarios. For example, in the raw material change stage where rapid cooling is required, high-density cooling pipes are selected to enhance the cooling effect; in the normal production temperature maintenance stage, low-density cooling pipes are selected to reduce energy consumption, making the cooling system more in line with actual production needs.

[0018] Furthermore, the inlet and outlet water pipes are connected to an external circulating cooling water system.

[0019] By adopting the above technical solution, firstly, the inlet and outlet water pipes are connected to the external circulating cooling water system, which can continuously and stably provide cooling water to the cooling pipes, ensuring that the cooling process is uninterrupted, avoiding the decrease in cooling effect due to insufficient cooling water supply, and ensuring that the spiral conveying pipe can be cooled down in time.

[0020] In summary, the present invention has the following main advantages:

[0021] This invention utilizes a design that integrates a spiral cooling pipe wound around the heating device of an injection molding machine with an infrared sensor and a solenoid valve for efficient operation. This allows the external circulating cooling water system to quickly cool the injection pipe when changing injection molding materials. Furthermore, when the solenoid valve in the water inlet pipe receives an electrical signal from the infrared sensor in the feed hopper, it can automatically adjust the cooling water flow rate according to the material height, ensuring that the cooling intensity matches the actual production needs. This achieves high efficiency in the injection molding machine while also shortening the work cycle. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a side view of the structure of this utility model;

[0024] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0025] Figure 4 For the present utility model Figure 3 A schematic diagram of the specific structure at point A in the middle.

[0026] In the diagram: 1. Injection molding machine body; 2. Feed hopper; 3. Cooling pipe wall; 4. Water inlet pipe; 5. Water outlet track; 6. Flange connector; 7. Injection mold; 8. Solenoid valve; 9. Heating device; 10. Infrared sensor; 11. Cooling pipe; 12. Screw conveyor pipe; 13. Injection nozzle; 14. Control console. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In this embodiment:

[0029] A dual-tube injection molding machine for shoe production, such as... Figure 1-4As shown, the injection molding machine includes a main body 1, which includes a spiral conveying pipe 12. A heating device 9 is located around the outer periphery of the spiral conveying pipe 12, and a cooling pipe 11 is located around the outer periphery of the heating device 9. A cooling pipe wall 3 is located around the outer periphery of the cooling pipe 11. An inlet pipe 4 and an outlet pipe 5 are located on the side of the cooling pipe wall 3. The inlet pipe 4 and the outlet pipe 5 are connected to the cooling pipe wall 3 via flange connectors 6. A solenoid valve 8 for controlling the cooling water flow rate is located at the inlet pipe 4. A feed hopper 2 is located at the beginning of the spiral conveying pipe 12. An infrared sensor 10 for measuring the height of the raw material inside the hopper 2 is located inside the feed hopper 2. Firstly, the spiral conveying pipe 12 included in the injection molding machine main body 1 provides a channel for raw material conveying. The outer periphery is heated... Device 9 can heat the raw material to a molten state to meet the injection molding requirements; the cooling pipe 11 and the cooling pipe wall 3 form a cooling system, which can quickly reduce the temperature of the spiral conveying pipe 12 when needed, solving the problem of long natural cooling time; the inlet pipe 4 and the outlet pipe 5 are connected by flange connectors 6 to ensure the cooling water circuit is sealed and stable; the solenoid valve 8 can control the cooling water flow rate and realize flexible adjustment of cooling intensity; the infrared sensor 10 in the feed hopper 2 can monitor the raw material height and promptly remind to replenish the raw material to avoid production interruption due to insufficient raw material. At the same time, these structures work together to ensure the stability of raw material heating and melting, shorten equipment waiting time through efficient cooling, and monitor the raw material status in real time, thereby improving the overall production efficiency and reliability of the injection molding machine.

[0030] See Figure 4 The cooling pipe 11 is spirally wound around the outside of the heating device 9. First, the spiral winding of the cooling pipe 11 around the outside of the heating device 9 greatly increases the contact area with the heating device 9, allowing the cooling water to absorb heat more fully during the flow process, avoiding insufficient local cooling, ensuring uniform cooling of all parts of the spiral conveying pipe 12, and preventing the impact of excessively high local temperatures on subsequent material changes or equipment performance. At the same time, this winding method extends the flow path of the cooling water in the cooling pipe 11, allowing for more thorough heat exchange and further improving cooling efficiency. It can reduce the temperature of the injection molding pipe to the required level in a short time, reduce equipment downtime, and ensure production continuity. The advantages are even more obvious in scenarios where frequent material changes are required.

[0031] See Figure 1 , Figure 4The infrared sensor 10 is model E3Z-LS86, and the solenoid valve 8 receives the electrical signal from the infrared sensor. First, the infrared sensor 10, model E3Z-LS86, has accurate detection capabilities and can accurately measure the height of the raw material in the feed hopper 2, providing an accurate basis for raw material replenishment and avoiding the impact of too much or too little raw material on the production rhythm. The infrared sensor 10 is used to monitor the height of the raw material. When the height of the raw material drops to the minimum threshold, the infrared sensor 10 will output an electrical signal. This signal is first transmitted to the control system. After the internal logic of the system is judged, the control system sends a command signal to the solenoid valve 8, thereby realizing the linkage control between the raw material status and the cooling system, so that the cooling intensity matches the production demand, reducing manual operation, improving the automation level of the equipment, and ensuring the stability and coordination of the production process.

[0032] See Figure 4 The spiral conveying pipe 12 is equipped with an injection nozzle 13 at its end. The end of the injection nozzle 13 is connected to the injection mold 7, which is equipped with a moving mold and a fixed mold. First, the injection nozzle 13 at the end of the spiral conveying pipe 12 can accurately deliver the molten raw material to the injection mold 7, ensuring the accuracy and uniformity of the raw material injection, reducing material waste, and improving the product molding precision. At the same time, the moving mold and fixed mold of the injection mold 7 can stably form during the two-material injection process, ensuring that the two raw materials are fully combined in the mold, ensuring the integrity and consistency of the product structure. The opening and closing design of the moving mold and fixed mold facilitates the removal of the finished product. In addition, with the continuous feeding of the spiral conveying pipe 12, efficient production of two-material injection is achieved, reducing production interruption time, improving overall production efficiency, and meeting the needs of mass production of shoes.

[0033] See Figure 1 , Figure 2 A control console 14 is provided on the side of the main body 1 of the injection molding machine.

[0034] By adopting the above technical solution, firstly, the control console device 14 on the side of the injection molding machine body 1 can centrally control the core components of the equipment, such as adjusting the heating temperature of the heating device 9, setting the working parameters of the solenoid valve 8, and monitoring the detection data of the infrared sensor 10, which simplifies the operation process and reduces the difficulty of the operator's work. At the same time, the control console device 14 can display the equipment operating status in real time, such as heating temperature, cooling water flow rate, raw material height, etc., which makes it easier for the operator to detect abnormalities in time and make adjustments, reduce the equipment failure rate, ensure the continuous and stable operation of the production process, and improve the overall controllability of the equipment operation.

[0035] See Figure 4The cooling pipe 11 has two, but is not limited to, two density characteristics. First, the cooling pipe 11 has two or more density characteristics, which can be flexibly selected according to the cooling needs of different production scenarios. For example, in the raw material change stage where rapid cooling is required, a high-density cooling pipe is selected to enhance the cooling effect; in the normal production temperature maintenance stage, a low-density cooling pipe is selected to reduce energy consumption, making the cooling system more in line with actual production needs. At the same time, the design of multiple density characteristics improves the adaptability of the equipment, can cope with the injection molding process requirements of different types of raw materials, avoids the impact of insufficient or excessive cooling capacity on production efficiency and product quality, and expands the application range of the equipment.

[0036] See Figure 1 , Figure 2 The inlet pipe 4 and outlet pipe 5 are connected to the external circulating cooling water system. First, the connection between the inlet pipe 4 and outlet pipe 5 and the external circulating cooling water system can continuously and stably provide cooling water to the cooling pipe 11, ensuring uninterrupted cooling process and avoiding a decrease in cooling effect due to insufficient cooling water supply. This ensures that the spiral conveying pipe 12 can be cooled down in time. At the same time, the external circulating cooling water system can perform unified treatment on the cooling water, such as cooling and filtration, to maintain the cleanliness and temperature stability of the cooling water, reduce the blockage and corrosion of the cooling pipe 11 by impurities, extend the service life of the equipment, and the recycling mode reduces water consumption, making it more energy-saving and environmentally friendly.

[0037] The implementation principle of this embodiment is as follows: In specific operation, the raw material enters the spiral conveying pipe 12 from the feed hopper 2. The infrared sensor 10 inside the feed hopper 2 monitors the height of the raw material in real time. The heating device 9 on the outer periphery of the spiral conveying pipe 12 heats the raw material inside to make it melt. The molten raw material moves towards the end under the action of the spiral conveyor. When the raw material reaches the end of the spiral conveying pipe 12, it is injected into the injection mold 7 through the injection nozzle 13. When cooling is required, the external circulating cooling water system delivers cooling water through the water inlet pipe 4 and enters the cooling pipe 11 inside the cooling pipe wall 3 through the flange connector 6. The cooling pipe 11 spirally winds around the outside of the heating device 9. After absorbing heat, the cooling water flows back to the external circulation system through the water outlet pipe 5. The solenoid valve 8 at the water inlet pipe 4 adjusts the cooling water flow according to the electrical signal of the infrared sensor 10 to shorten the working cycle of the injection molding machine.

[0038] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A color-mixing dual-material injection molding machine for shoe production, characterized in that: The injection molding machine includes a main body (1), which includes a spiral conveying pipe (12). A heating device (9) is provided on the outer periphery of the spiral conveying pipe (12). A cooling pipe (11) is provided on the outer periphery of the heating device (9). A cooling pipe wall (3) is provided on the outer periphery of the cooling pipe (11). A water inlet pipe (4) and a water outlet pipe (5) are provided on the side of the cooling pipe wall (3). The water inlet pipe (4) and the water outlet pipe (5) are connected to the cooling pipe wall (3) through a flange connector (6). A solenoid valve (8) for controlling the flow rate of cooling water is provided at the water inlet pipe (4). A feed hopper (2) is provided at the beginning of the spiral conveying pipe (12). An infrared sensor (10) for measuring the height of the raw material inside the hopper is provided inside the feed hopper (2).

2. The shoe manufacturing dual-material injection molding machine according to claim 1, characterized in that: The cooling pipe (11) is spirally wound around the outside of the heating device (9).

3. The shoe manufacturing dual-material injection molding machine for color mixing according to claim 1, characterized in that: The infrared sensor (10) is model E3Z-LS86, and the solenoid valve (8) receives the electrical signal from the infrared sensor.

4. The shoe manufacturing dual-material injection molding machine for color mixing according to claim 1, characterized in that: The end of the spiral conveying pipe (12) is provided with an injection nozzle (13), the end of which is connected to the injection mold (7), and the injection mold (7) is provided with a moving mold and a fixed mold.

5. The shoe manufacturing dual-material injection molding machine for color mixing according to claim 1, characterized in that: The injection molding machine body (1) is provided with a control console device (14) on its side.

6. The shoe manufacturing dual-material injection molding machine for color mixing according to claim 1, characterized in that: The cooling pipe (11) has two, but is not limited to, two density characteristic forms.

7. The shoe manufacturing dual-material injection molding machine for color mixing according to claim 1, characterized in that: The inlet pipe (4) and outlet pipe (5) are connected to an external circulating cooling water system.

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