Cooling forming device for material injection molding processing

Abstract

The utility model discloses a cooling forming device for injection molding of materials, which relates to the technical field of injection molding, and particularly comprises a movable mold and a fixed mold capable of being combined with the movable mold for material forming, and a forming cavity is formed between the movable mold and the fixed mold. A second cooling liquid loop is arranged in the fixed mold and surrounds the forming cavity. The second cooling liquid loop comprises a water inlet pipeline and a water outlet pipeline, an outlet of the water inlet pipeline is butted with an inlet of the first cooling liquid loop, and an inlet of the water outlet pipeline is butted with an outlet of the first cooling liquid loop; the first cooling liquid loop, the water inlet pipeline and the water outlet pipeline can form a circulation loop; valve assemblies capable of limiting flowing of cooling liquid are arranged at the butt joint positions of the water inlet pipeline and the first cooling liquid loop and the butt joint positions of the water outlet pipeline and the first cooling liquid loop. The valve assembly is in an open state when the movable mold and the fixed mold are closed, and the valve assembly is in a closed state when the movable mold and the fixed mold are opened.

Description

Technical Field

[0001] This utility model relates to the field of injection molding technology, specifically to a material injection molding cooling and forming device. Background Technology

[0002] Injection molding is a method of shaping industrial products. Products are typically made using rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding compression molding and die casting. An injection molding machine (or simply injection molding machine) is the main molding equipment that uses plastic molds to make plastic products of various shapes from thermoplastic or thermosetting materials. Injection molding is achieved through an injection molding machine and molds.

[0003] In current injection molding operations, a large number of cooling pipes are required to cool the molding mold. Both the stationary and moving molds need to be equipped with inlet and outlet water pipes, which requires a lot of space and is prone to tangling, making it extremely inconvenient. Therefore, we propose a material injection molding cooling molding device. Utility Model Content

[0004] This invention provides a material injection molding and cooling device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A material injection molding cooling and forming apparatus includes a moving mold and a fixed mold that can be closed with the moving mold to form a material, forming a forming cavity between them; a continuous first coolant circuit is provided around the forming cavity inside the moving mold, and a second coolant circuit is provided around the forming cavity inside the fixed mold.

[0007] The second coolant circuit includes an inlet pipe and an outlet pipe. The outlet of the inlet pipe is connected to the inlet of the first coolant circuit, and the inlet of the outlet pipe is connected to the outlet of the first coolant circuit.

[0008] The first coolant circuit can form a circulation loop with the inlet and outlet water pipes;

[0009] The inlet pipe and the first coolant circuit, as well as the outlet pipe and the first coolant circuit, are provided with valve assemblies that can restrict the flow of coolant.

[0010] The valve assembly is in the open state when the moving mold and the fixed mold are closed, and in the closed state when the moving mold and the fixed mold are opened.

[0011] Preferably, the inlet and outlet of the first coolant circuit are located on the mold closing surface of the moving mold, and the inlet of the first coolant circuit is above the outlet;

[0012] The inlet of the water inlet pipe and the outlet of the water outlet pipe are located at the bottom of the fixed mold;

[0013] The outlet of the water inlet pipe and the inlet of the water outlet pipe are located on the mold closing surface of the fixed mold, and the outlet of the water inlet pipe is located above the inlet of the water outlet pipe. The water inlet pipe and the water outlet pipe surround the molding cavity and are not connected to each other.

[0014] Preferably, the inlet and outlet of the first coolant circuit, the outlet of the inlet pipe, and the inlet of the outlet pipe are all provided with cavities. When the moving mold and the fixed mold are closed, the cavity at the outlet of the inlet pipe is fitted with the cavity at the inlet of the first coolant circuit, and the cavity at the inlet of the outlet pipe is fitted with the cavity at the outlet of the first coolant circuit. The valve assembly is installed in the cavity.

[0015] Preferably, the valve assembly includes a valve plate and an interface chamber. The valve plate is movably connected inside the interface chamber and can close the interface chamber. The outer end of the interface chamber is flush with the mold closing surface of the moving mold. When the moving mold and the fixed mold open, the outermost end of the valve plate extends out of the interface chamber.

[0016] Preferably, the valve plate and the inner end of the interface compartment are cylindrical, and the valve plate and the outer end of the interface compartment are frustum-shaped.

[0017] The outer maximum radius of the valve plate is greater than the inner radius, and it can fit into the inner part of the outer end of the interface compartment. The inner radius of the interface compartment is greater than the outer maximum radius.

[0018] The inner end of the valve plate extends out of the inner end of the interface compartment, and the valve plate can slide inside the interface compartment.

[0019] Preferably, the inner end of the interface compartment is provided with a coolant inlet that communicates with the interior of the interface compartment, and the coolant passing through the valve assembly enters the cavity through the coolant inlet;

[0020] The inner end of the valve plate is fitted with an elastic device that can push the valve plate to move outward.

[0021] Preferably, the elastic device is a spring, which is installed on the outer end of the valve plate and connected to the inner wall of the interface compartment. The spring can push the valve plate to fit tightly against the inner wall of the interface compartment.

[0022] Preferably, a rubber ring is fitted around the maximum circumference of the valve plate and can fit against the inner wall of the interface compartment; a gasket is installed at the outer end of the interface compartment.

[0023] This utility model has the following beneficial effects:

[0024] This material injection molding cooling forming device uses valve assemblies located at the points where the inlet pipe connects to the first coolant circuit and the outlet pipe connects to the first coolant circuit to restrict coolant flow. When the moving mold and the fixed mold are closed, the valve assemblies abut against each other and open the channel, allowing coolant to flow through the first coolant circuit and out through the outlet pipe. When the moving mold and the fixed mold are open, the valve assemblies can fit tightly against the valve assemblies, sealing the inlet pipe, the outlet pipe, and the moving mold, thus preventing coolant flow. The valve assemblies, together with the inlet pipe, the outlet pipe, and the first coolant circuit, form a disconnectable cooling circuit, reducing the need for external coolant pipes installed on the moving mold and reducing entanglement between coolant pipes. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model;

[0026] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of the mold-closing section of this utility model;

[0028] Figure 4 This is a schematic diagram of the valve assembly of this utility model;

[0029] In the diagram: 1. Moving mold; 2. Fixed mold; 3. Inlet pipe; 4. Outlet pipe; 5. Rubber ring; 6. Spring; 7. Valve plate; 8. Interface chamber; 9. Cavity; 10. Coolant inlet. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figures 1 to 3 A material injection molding and cooling forming device includes a movable mold 1 and a fixed mold 2 that can be closed with the movable mold 1 to form a material, with a forming chamber formed therebetween.

[0032] The moving mold 1 has a continuous first coolant circuit surrounding the molding cavity, and the fixed mold 2 has a second coolant circuit surrounding the molding cavity. When the moving mold 1 and the fixed mold 2 are closed, the first coolant circuit and the second coolant circuit can be connected together to form a complete cooling circuit.

[0033] The second coolant circuit includes an inlet pipe 3 and an outlet pipe 4. The outlet of the inlet pipe 3 is connected to the inlet of the first coolant circuit, and the inlet of the outlet pipe 4 is connected to the outlet of the first coolant circuit. Coolant enters the inlet of the first coolant circuit from the outlet of the inlet pipe 3, then flows from the outlet of the first coolant circuit into the inlet of the outlet pipe 4, and finally flows out from the outlet of the outlet pipe 4.

[0034] The first coolant circuit can form a circulation loop with the inlet pipe 3 and the outlet pipe 4; the coolant can complete a circulation in it, and its coolant pipe is directly inside the moving mold 1, and there is no coolant pipe outside it. While ensuring the cooling of the moving mold 1, it avoids the possibility of the coolant pipes outside the moving mold 1 getting tangled, thereby better performing injection molding.

[0035] The inlet pipe 3 and the first coolant circuit, as well as the outlet pipe 4 and the first coolant circuit, are equipped with valve assemblies that can restrict the flow of coolant. The valve assemblies can control the flow of coolant. When the moving mold 1 and the fixed mold 2 are closed, the coolant in the inlet pipe 3 can flow into the inlet of the first coolant circuit, and the coolant at the outlet of the first coolant circuit can flow into the outlet pipe 4. When the moving mold 1 and the fixed mold 2 are opened, the outflow of coolant can be prevented immediately, thus avoiding affecting the injection molding and blocking the flow of coolant between the first coolant circuit and the inlet pipe 3 and the outlet pipe 4.

[0036] The valve assembly is in the open state when the moving mold 1 and the fixed mold 2 are closed, and in the closed state when the moving mold 1 and the fixed mold 2 are open. When the valve assembly is open, the coolant in the inlet pipe 3 can flow into the inlet of the first coolant circuit, and the coolant at the outlet of the first coolant circuit can flow into the outlet pipe 4. When the valve assembly is closed, it can block the flow of coolant between the first coolant circuit and the inlet pipe 3 and the outlet pipe 4.

[0037] Please see Figures 1 to 3 The inlet and outlet of the first coolant circuit are located on the mold closing surface of the moving mold 1, with the inlet of the first coolant circuit above the outlet. The coolant can flow downward more quickly under the action of gravity and thrust, bringing out the heated coolant more quickly and cooling the mold better.

[0038] The inlet of the water inlet pipe 3 and the outlet of the water outlet pipe 4 are located at the bottom of the fixed mold 2; coolant flows in through the water inlet pipe 3 and flows out through the water outlet pipe 4.

[0039] The outlet of the water inlet pipe 3 and the inlet of the water outlet pipe 4 are located on the mold closing surface of the fixed mold 2, with the outlet of the water inlet pipe 3 located above the inlet of the water outlet pipe 4. The water inlet pipe 3 and the water outlet pipe 4 surround the molding cavity and are not interconnected. Under the action of gravity and thrust, the coolant can flow downward more quickly, carrying out the heated coolant more quickly and cooling the mold better. Furthermore, the fact that the water inlet pipe 3 and the water outlet pipe 4 are not interconnected prevents the coolant from flowing directly out of the water outlet pipe 4 and thus not flowing into the first coolant circuit.

[0040] Please see Figures 1 to 3 The inlet and outlet of the first coolant circuit, the outlet of the inlet pipe 3, and the inlet of the outlet pipe 4 are all provided with cavities 9. When the moving mold 1 and the fixed mold 2 are closed, the cavity 9 at the outlet of the inlet pipe 3 fits tightly with the cavity 9 at the inlet of the first coolant circuit, and the cavity 9 at the inlet of the outlet pipe 4 fits tightly with the cavity 9 at the outlet of the first coolant circuit. The valve assembly is installed in the cavity 9. The cavities 9 can fit tightly together to prevent coolant leakage, and the valve assembly can control the entry and exit of coolant into the cavity 9.

[0041] Please see Figures 1 to 4 The valve assembly includes a valve plate 7 and an interface chamber 8. The valve plate 7 is movably connected inside the interface chamber 8 and can close the interface chamber 8. The outer end of the interface chamber 8 is flush with the closing surface of the moving mold 1. When the moving mold 1 and the fixed mold 2 open, the outermost end of the valve plate 7 extends out of the interface chamber 8. It should be noted that the length of the valve plate 7 is greater than the length of the interface chamber 8. When the interface chamber 8 is in contact, the valve plate 7 slides into the interior of the interface chamber 8, and the coolant flows into the cavity 9 through the gap between the valve plate 7 and the interface chamber 8.

[0042] Please see Figures 2 to 4 The valve plate 7 and the inner end of the interface chamber 8 are cylindrical, and the outer ends of the valve plate 7 and the interface chamber 8 are frustum-shaped. The maximum radius of the outer end of the valve plate 7 is greater than the radius of the inner end, and it can fit in close contact with the inner end of the outer end of the interface chamber 8. The radius of the inner end of the interface chamber 8 is greater than the maximum radius of the outer end. The maximum radius of the outer end of the valve plate 7 is less than the maximum radius of the outer end of the interface chamber 8, so that the valve plate 7 can slide into the interface chamber 8.

[0043] The inner end of the valve plate 7 extends out of the inner end of the interface chamber 8. The valve plate 7 can slide inside the interface chamber 8, and the outer end of the valve plate 7 cannot slide out of the interface chamber 8.

[0044] Please see Figures 2 to 4 The interface chamber 8 has a coolant inlet 10 at its inner end, which is connected to the interior of the interface chamber 8. The coolant passing through the valve assembly enters the cavity 9 through the coolant inlet 10. The coolant inlet 10 is located between the interface chamber 8 and the cavity 9, and keeps the interface chamber 8 and the cavity 9 in communication.

[0045] The inner end of the valve plate 7 is fitted with an elastic device that can push the valve plate 7 to move outward; this allows the outer end of the valve plate 7 to fit tightly against the inner wall of the interface chamber 8 at its maximum radius.

[0046] Please see Figures 2 to 4 The elastic device is a spring 6, which is installed on the outer end of the valve plate 7 and connected to the inner wall of the interface chamber 8. The spring 6 can push the valve plate 7 to fit tightly against the inner wall of the interface chamber 8. The spring 6 is larger than the diameter of the inner end of the valve plate 7 and smaller than the maximum diameter of the outer end of the valve plate 7, so that the spring 6 cannot detach from the valve plate 7 and can always exert force on the valve plate 7.

[0047] Please see Figures 2 to 4 A rubber ring 5 is fitted on the maximum circumference of the valve plate 7 and can fit against the inner wall of the interface chamber 8; this allows the valve plate 7 and the interface chamber 8 to fit more tightly to prevent coolant leakage, and can also extend the friction between the valve plate 7 and the interface chamber 8, thus extending their service life.

[0048] A gasket is installed at the outer end of the interface compartment 8 to ensure a tighter fit, prevent coolant leakage, reduce compression between the interface compartments, and extend the service life of the interface compartment 8.

[0049] In summary, this injection molding cooling and forming device works as follows: When the moving mold 1 and the fixed mold 2 are closed, the coolant flows through the inlet pipe 3 around the forming chamber and connects to the cavity 9 at the upper end of the fixed mold 2. The cavity 9 at the upper end of the fixed mold 2 is in close contact with the cavity 9 at the upper end of the moving mold 1. The interface chambers 8 in the two cavities 9 are tightly connected, and the two valve plates 7 slide towards each other, allowing the coolant to enter the inlet pipe 3. The coolant in the inlet pipe 3 then flows through the gap between the valve plate 7 and the interface chamber 8 into the first coolant circuit inlet in the moving mold 1. The coolant in the first coolant circuit flows through the first coolant circuit outlet into the outlet pipe 4 inlet and is then discharged through the outlet pipe 4. When the moving mold 1 and the fixed mold 2 are opened, the valve plate 7, under the action of the spring 6, is in contact with the interface chamber 8, preventing the flow of coolant. At this time, the mold can be removed.

[0050] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Moreover, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A material injection molding and cooling forming apparatus, comprising a movable mold (1) and a fixed mold (2) capable of engaging with the movable mold (1) to form a material molding chamber therebetween, characterized in that: The moving mold (1) has a continuous first coolant circuit surrounding the molding cavity, and the fixed mold (2) has a second coolant circuit surrounding the molding cavity. The second coolant circuit includes an inlet pipe (3) and an outlet pipe (4). The outlet of the inlet pipe (3) is connected to the inlet of the first coolant circuit, and the inlet of the outlet pipe (4) is connected to the outlet of the first coolant circuit. The first coolant circuit can form a circulation loop with the inlet pipe (3) and the outlet pipe (4); The inlet pipe (3) and the first coolant circuit and the outlet pipe (4) and the first coolant circuit are respectively provided with valve assemblies that can restrict the flow of coolant. The valve assembly is in an open state when the moving mold (1) and the fixed mold (2) are closed, and the valve assembly is in a closed state when the moving mold (1) and the fixed mold (2) are opened.

2. The material injection molding cooling forming apparatus according to claim 1, characterized in that: The inlet and outlet of the first coolant circuit are located on the mold closing surface of the moving mold (1), and the inlet of the first coolant circuit is above the outlet; The inlet of the water inlet pipe (3) and the outlet of the water outlet pipe (4) are located at the bottom of the fixed mold (2); The outlet of the water inlet pipe (3) and the inlet of the water outlet pipe (4) are located on the mold closing surface of the fixed mold (2), and the outlet of the water inlet pipe (3) is located above the inlet of the water outlet pipe (4). The water inlet pipe (3) and the water outlet pipe (4) surround the molding cavity and are not connected to each other.

3. The material injection molding cooling forming apparatus according to claim 2, characterized in that: The inlet and outlet of the first coolant circuit, the outlet of the inlet pipe (3), and the inlet of the outlet pipe (4) are all provided with cavities (9). When the moving mold (1) and the fixed mold (2) are closed, the cavity (9) at the outlet of the inlet pipe (3) is in contact with the cavity (9) at the inlet of the first coolant circuit, and the cavity (9) at the inlet of the outlet pipe (4) is in contact with the cavity (9) at the outlet of the first coolant circuit. The valve assembly is installed in the cavity (9).

4. The material injection molding cooling forming apparatus according to claim 3, characterized in that: The valve assembly includes a valve plate (7) and an interface chamber (8). The valve plate (7) is movably connected inside the interface chamber (8) and can close the interface chamber (8). The outer end of the interface chamber (8) is flush with the mold closing surface of the moving mold (1). When the moving mold (1) and the fixed mold (2) open, the outermost end of the valve plate (7) extends out of the interface chamber (8).

5. The material injection molding cooling forming apparatus according to claim 4, characterized in that: The valve plate (7) and the inner end of the interface chamber (8) are cylindrical, and the outer end of the valve plate (7) and the interface chamber (8) are frustum-shaped. The outer maximum radius of the valve plate (7) is greater than the inner radius, and it can fit into the inner part of the outer end of the interface compartment (8). The inner radius of the interface compartment (8) is greater than the outer maximum radius. The inner end of the valve plate (7) extends out of the inner end of the interface chamber (8), and the valve plate (7) can slide inside the interface chamber (8).

6. The material injection molding cooling forming apparatus according to claim 5, characterized in that: The inner end of the interface compartment (8) is provided with a coolant inlet (10) that communicates with the interior of the interface compartment (8). The coolant passing through the valve assembly enters the cavity (9) through the coolant inlet (10). The valve plate (7) is fitted with an elastic device at its inner end, which can push the valve plate (7) to move outward.

7. The material injection molding cooling forming apparatus according to claim 6, characterized in that: The elastic device is a spring (6), which is installed on the outer end of the valve plate (7) and connected to the inner wall of the interface chamber (8). The spring (6) can push the valve plate (7) to fit tightly against the inner wall of the interface chamber (8).

8. The material injection molding cooling forming apparatus according to claim 6, characterized in that: A rubber ring (5) is fitted on the maximum circumference of the valve plate (7) and can fit against the inner wall of the interface chamber (8); a gasket is installed at the outer end of the interface chamber (8).

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