Efficient cooling liquid circulation system of automobile part mold and method of efficient cooling liquid circulation system

Abstract

The efficient cooling liquid circulation system comprises a mold body, a cooling liquid circulation assembly and an injection molding flow valve screw assembly, the cooling liquid circulation assembly is arranged in the mold body, and an injection molding opening is formed in one side of the mold body; the injection molding mold has the beneficial effects that the mold box is arranged between the upper mold and the lower mold, when the upper mold and the lower mold are used for injecting the plastic into the mold box, it can be ensured that pressure borne by all positions of the mold box is balanced, and the injection molding effect is improved; a water pipe inlet and a water pipe outlet and inlet are formed in the right side of the upper mold and are respectively communicated with a cooling liquid circulating water inlet pipe and a cooling liquid circulating water outlet pipe, so that cold water can be injected into the upper mold and the mold box can be cooled in the injection molding process of the mold box, and a cooling effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of injection molds, and in particular to a high-efficiency coolant circulation system and method for automobile component molds. Background Art

[0002] An injection mold is a mold used for injection molding. At a certain temperature, a stirring heating device is used to heat the plastic raw material to a molten state, and then it is extruded into the mold and cooled and formed in the mold. After demolding and subsequent processing, a plastic product can be obtained. This process is called injection molding, and the injection mold is the mold required to assist in shaping the plastic raw material and complete cooling and molding in this process.

[0003] Injection molds are generally composed of a concave mold component and a convex mold component. Injection molds with higher processing accuracy will also use a stripper plate between the two for assistance. During the injection process, one of the templates is fixed in position, and the other template is set to a structure that can move back and forth. Injection and cooling are completed in the mold-closing state, and the demolding is opened after the injection is completed. Each part of the injection mold is equipped with a cooling structure that fits the core. By injecting water or other coolants inside, the purpose of rapid cooling and molding is achieved.

[0004] The cooling water channels set up inside the mold are mainly processed by drilling. Due to the difficulty of drilling, the internal water channels are generally connected straight paths. At present, there are also molds that can be set up with serpentine loops, but such molds generally have the problem of low cooling efficiency. Using fixed water channels for heat dissipation will inevitably lead to uneven heat dissipation of various parts, and the heat dissipation is slower at locations far away from the water channels, resulting in a longer time for heat dissipation, affecting production efficiency.

[0005] Various molds and tools. In short, the mold is a tool used to make molded objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the object by changing the physical state of the molded material. However, the cooling system of the existing hot stamping mold consumes electricity and cannot work for a long time if the power is off; at the same time, the cooling method is single, the cooling speed is slow, and the cooling effect is not obvious. Summary of the invention

[0006] The purpose of the present invention is to solve the above-mentioned technical problems and to provide a new type of efficient coolant circulation system and method for automobile parts molds. A mold box is provided between the upper mold and the lower mold. When the upper mold and the lower mold inject plastic into the mold box, it can ensure that the pressure at various parts of the mold box is balanced, thereby improving the injection molding effect; a water pipe inlet and a water pipe outlet are provided on the right side of the upper mold, and the water pipe inlet and the water pipe outlet are respectively connected to the coolant circulation inlet pipe and the coolant circulation outlet pipe, thereby solving the problem that cold water can be injected into the upper mold during the injection molding of the mold box to cool the mold box and play a cooling role. The system has a simple structure and is easy to use. The coolant in the coolant circulation component passes through the coolant into the upper mold, and the coolant circulates in the upper mold, thereby increasing the cooling efficiency of the mold.

[0007] The present invention is achieved through the following technical solutions: A high-efficiency coolant circulation system for an automobile parts mold comprises a mold body, a coolant circulation component, and an injection flow valve screw component. The mold body is provided with a coolant circulation component inside, and one side of the mold body is provided with an injection molding port. The discharge nozzle of the injection molding flow valve screw component is aligned with the injection molding port on one side of the mold body to inject molding.

[0008] Furthermore, the mold body includes an upper mold, a lower mold, and a mold box. The upper mold is provided above the lower mold, a cavity is provided between the upper mold and the lower mold, a mold box is provided in the cavity, a mold box mounting position is provided above the lower mold, and the mold box is embedded in the mold box mounting position above the lower mold.

[0009] Furthermore, a half groove is provided at the bottom right side of the upper mold, a mold box cavity is provided inside the upper mold, a plurality of heat dissipation holes are provided inside the mold box cavity, a half groove is provided at the top right side of the lower mold, and the half groove at the bottom right side of the upper mold and the half groove at the top right side of the lower mold form a complete injection molding port.

[0010] As a further feature, a water pipe inlet is provided on the right side of the upper mold, and a water pipe outlet is provided on one side of the water pipe inlet.

[0011] Furthermore, the coolant circulating water pipe assembly includes a coolant circulating water inlet pipe, a coolant circulating water outlet pipe, and a coolant circulating pipe. One end of the coolant circulating water inlet pipe is inserted into the water pipe inlet on the right side of the upper mold and is connected to one end of the coolant circulating pipe. The other end of the coolant circulating water inlet pipe extends to the outside of the upper mold and is connected to the inlet of an external coolant tank. One end of the coolant circulating water outlet pipe is inserted into the water pipe outlet on the right side of the upper mold and is connected to the other end of the coolant circulating pipe. The other end of the coolant circulating water outlet pipe extends to the outside of the upper mold and is connected to the outlet of the external coolant tank.

[0012] As a further step, the injection molding feed screw assembly includes a first injection molding screw, a second injection molding screw, and a flow valve assembly, wherein one end of the first injection molding screw is provided with an injection molding feed port, the other end of the first injection molding screw is connected to one end of the flow valve assembly, the other end of the flow valve assembly is connected to one end of the second injection molding screw, and the other end of the second injection molding screw is provided with a discharge nozzle, the discharge nozzle is aligned with the injection port to inject plastic, when the injection plastic enters the second injection molding screw from the injection molding feed port of the first injection molding screw, and then enters the mold box through the discharge nozzle of the second injection molding screw, the injection plastic in the mold box coincides with the mold box installation position above the lower mold, and then pressure is applied through the upper mold, the upper mold presses the mold box, the injection plastic in the mold box overflows from the injection molding port, and the overflowed injection plastic enters the second injection molding screw through the discharge nozzle, and the flow valve assembly prevents the injection plastic from overflowing from the second injection molding screw to the outside of the first injection molding screw.

[0013] Furthermore, the flow valve assembly includes a flow valve and a flow check spring. A through hole is provided inside the flow valve. One end of the check spring abuts against the through hole inside the flow valve, and the other end of the check spring abuts against one end of the second injection molding screw. The flow check spring prevents the injection material from overflowing from the second injection molding screw to the outside of the first injection molding screw.

[0014] As a further feature, the flow check spring is L-shaped.

[0015] Furthermore, the injection molding feed screw assembly also includes a heating rod, which seamlessly connects the first injection molding screw, the second injection molding screw, and the flow valve assembly to the first injection molding screw and the second injection molding screw, and the heating rod heats the injection material inside the first injection molding screw and the second injection molding screw.

[0016] A method for using a high-efficiency coolant circulation system for an automobile parts mold comprises the following steps: S1: First, the mold box is embedded in the mold box installation position above the lower mold, and the upper mold seamlessly connects the mold box and the mold box installation position above the lower mold to the lower mold; S2: After the mold box is sealed, it is buckled between the lower mold and the upper mold, and then the injection material is injected into the mold box through the injection feeding port of the first injection screw, and the upper mold applies pressure to the mold box; S3: After the upper mold in S2 applies pressure to the mold box, when the injection plastic enters the second injection molding screw from the injection molding feed port of the first injection molding screw and then enters the mold box through the discharge nozzle of the second injection molding screw, the injection plastic in the mold box coincides with the mold box installation position above the lower mold, and then the upper mold applies pressure, the upper mold applies pressure to the mold box, and the injection plastic in the mold box overflows from the injection plastic port, and the overflowed injection plastic enters the second injection molding screw through the discharge nozzle, and the flow check spring in the flow valve prevents the injection plastic from overflowing from the second injection molding screw to the outside of the first injection molding screw; S4: Pull out the second injection screw and the first injection screw, so that the mold box with a high temperature after demolding is immersed upward into the coolant in the upper mold for cooling treatment, and at the same time, the coolant is pressurized in the direction close to the mold box, so that the relative pressure between the mold box and the coolant is greater, and the flowing coolant can better cool the mold box. The coolant circulation pipe on the upper mold is connected to the flowing water to cool the coolant in the coolant circulation component.

[0017] The beneficial effects of the present invention are as follows: by providing a mold box between the upper mold and the lower mold, when the upper mold and the lower mold inject plastic into the mold box, it can be ensured that the pressure at various locations of the mold box is balanced, thereby improving the injection molding effect; a water pipe inlet and a water pipe outlet are provided on the right side of the upper mold, and the water pipe inlet and the water pipe outlet are respectively connected to the coolant circulation water inlet pipe and the coolant circulation water outlet pipe, thereby solving the problem that during the injection molding of the mold box, cold water can be injected into the upper mold and the mold box can be cooled to play a cooling role. The structure is simple and easy to use. The coolant in the coolant circulation component passes through the coolant into the upper mold, and the coolant circulates in the upper mold, thereby increasing the cooling efficiency of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the efficient coolant circulation system of the automobile parts mold of the present invention; Figure 2 It is a schematic diagram of the explosion structure of the efficient coolant circulation system of the automobile parts mold of the present invention; Figure 3 It is a schematic diagram of the structure of the mold body and the coolant circulation component of the present invention; Figure 4 It is a schematic diagram of the exploded structure of the mold body and the coolant circulation component of the present invention; Figure 5 This is a schematic diagram of the structure of the screw assembly of the injection molding flow valve of the present invention; Figure 6 This is a schematic diagram of the exploded structure of the screw assembly of the injection molding flow valve of the present invention; Figure 7 It is a schematic diagram of the structure of the flow valve assembly of the present invention; Figure 8This is a schematic diagram of the explosion structure of the flow valve assembly of the present invention; 1. Injection molding port; 2. Upper mold; 3. Half groove; 4. Mold box cavity; 5. Heat dissipation through hole; 6. Water pipe inlet; 7. Water pipe outlet; 8. Lower mold; 9. Mold box mounting position; 10. Half groove; 11. Mold box; 12. Cooling liquid circulation assembly; 13. Cooling liquid circulation inlet pipe; 14. Cooling liquid circulation outlet pipe; 15. Cooling liquid circulation pipe; 16. Injection molding flow valve screw assembly; 17. First injection molding screw; 18. Injection molding feed port; 19. Second injection molding screw; 20. Discharge nozzle; 21. Flow valve assembly; 22. Through hole; 23. Flow check spring; 24. Heating rod. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments: Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] Refer to Figure 1-Figure 8 As shown, an efficient coolant circulation system for an automobile parts mold includes a mold body 1, a coolant circulation component 2, and an injection flow valve screw component 3. The mold body 1 is provided with a coolant circulation component 2, and one side of the mold body 1 is provided with an injection molding port 11. The discharge nozzle 320 of the injection molding flow valve screw component 3 is aligned with the injection molding port 11 on one side of the mold body 1 to inject molding.

[0022] Preferably, the mold body 1 includes an upper mold 12, a lower mold 13, and a mold box 14. The upper mold 12 is provided above the lower mold 13. A cavity is provided between the upper mold 12 and the lower mold 13. A mold box 14 is provided in the cavity. A mold box mounting position 130 is provided above the lower mold 13. The mold box 14 is embedded in the mold box mounting position 130 above the lower mold 13.

[0023] Preferably, a semi-groove 120 is provided at the bottom right side of the upper mold 12, a mold box cavity 121 is provided inside the upper mold 12, a plurality of heat dissipation holes 122 are provided inside the mold box cavity 121, and a semi-groove 131 is provided at the top right side of the lower mold 13. The semi-groove 120 at the bottom right side of the upper mold 12 and the semi-groove 131 at the top right side of the lower mold 13 form a complete injection molding port 11.

[0024] Preferably, a water pipe inlet 123 is provided on the right side of the upper mold 12 , and a water pipe outlet 124 is provided on one side of the water pipe inlet 123 .

[0025] Preferably, the coolant circulating water pipe assembly 2 includes a coolant circulating water inlet pipe 21, a coolant circulating water outlet pipe 22, and a coolant circulating water pipe 23, one end of the coolant circulating water inlet pipe 21 is inserted into the water pipe inlet 123 on the right side of the upper mold 12 and is connected to one end of the coolant circulating water inlet pipe 23, the other end of the coolant circulating water inlet pipe 21 extends to the outside of the upper mold 12 and is connected to the inlet of an external coolant device, one end of the coolant circulating water outlet pipe 22 is inserted into the water pipe outlet 124 on the right side of the upper mold 12 and is connected to the other end of the coolant circulating water pipe 23, and the other end of the coolant circulating water outlet pipe 22 extends to the outside of the upper mold 12 and is connected to the outlet of the external coolant tank.

[0026] Preferably, the injection molding feed screw assembly 3 includes a first injection molding screw 31, a second injection molding screw 32, and a flow valve assembly 33. One end of the first injection molding screw 31 is provided with an injection molding feed port 310, the other end of the first injection molding screw 31 is connected to one end of the flow valve assembly 33, the other end of the flow valve assembly 33 is connected to one end of the second injection molding screw 32, and the other end of the second injection molding screw 32 is provided with a discharge nozzle 320, the discharge nozzle 320 is aligned with the injection molding port 11 to inject plastic, when the injection plastic is injected from the injection molding port 11 of the first injection molding screw 31 When the material port 310 enters the second injection molding screw 32 and then enters the mold box 14 through the discharge nozzle 320 of the second injection molding screw 32, the injection plastic in the mold box 14 coincides with the mold box mounting position 130 above the lower mold 13, and then pressure is applied through the upper mold 12. The upper mold 12 presses the mold box 13, and the injection plastic in the mold box 13 overflows from the injection plastic port 11. The overflowed injection plastic enters the second injection molding screw 32 through the discharge nozzle 320. The flow valve assembly 33 prevents the injection plastic from overflowing from the second injection molding screw 32 to the outside of the first injection molding screw 31.

[0027] Preferably, the flow valve assembly 33 includes a flow valve 330 and a flow check spring 331. A through hole 3301 is provided inside the flow valve 330. One end of the check spring 331 abuts against the through hole 3301 inside the flow valve 330, and the other end of the check spring 331 abuts against one end of the second injection molding screw 32. The flow check spring 331 prevents the injection plastic from overflowing from the second injection molding screw 32 to the outside of the first injection molding screw 31.

[0028] Preferably, the flow check spring 331 is L-shaped.

[0029] Preferably, the injection molding feed screw assembly 3 also includes a heating rod 34, which seamlessly connects the first injection molding screw 31, the second injection molding screw 32, and the flow valve assembly 33 to the first injection molding screw 31 and the second injection molding screw 32, and the heating rod 34 heats the injection material inside the first injection molding screw 31 and the second injection molding screw 32.

[0030] A method for using a high-efficiency coolant circulation system for an automobile parts mold comprises the following steps: S1: First, the mold box 14 is embedded in the mold box installation position 130 above the lower mold 13, and the upper mold 12 seamlessly connects the mold box 14 and the mold box installation position 130 above the lower mold 13 to the lower mold 13; S2: After the mold box 13 is sealed, it is buckled between the lower mold 13 and the upper mold 12, and then the injection molding material is injected into the mold box 14 through the injection molding feed port 310 of the first injection molding screw 31, and the upper mold 12 applies pressure to the mold box 14; S3: After the upper mold 12 in S2 applies pressure to the mold box 14, when the injection plastic enters the second injection molding screw 32 from the injection molding feed port 310 of the first injection molding screw 31, and then enters the mold box 14 through the discharge nozzle 320 of the second injection molding screw 32, the injection plastic in the mold box 14 coincides with the mold box mounting position 130 above the lower mold 13, and then the upper mold 12 applies pressure, and the upper mold 12 applies pressure to the mold box 14, and the injection plastic in the mold box 14 overflows from the injection molding port 11, and the overflowed injection plastic enters the second injection molding screw 32 through the discharge nozzle 320, and the flow check spring 331 in the flow valve 33 prevents the injection plastic from overflowing from the second injection molding screw 32 to the outside of the first injection molding screw 31; S4: Pull out the second injection screw 32 and the first injection screw 31, so that the mold box 14 with a very high temperature after demolding is immersed upward into the coolant in the upper mold 12 for cooling treatment, and at the same time, the coolant is pressurized in the direction close to the mold box 14, so that the relative pressure between the mold box 14 and the coolant is larger, and the flowing coolant can better cool the mold box 14. The coolant circulation pipe 23 on the upper mold 12 is connected to the flowing water to cool the coolant in the coolant circulation component 2.

[0031] In summary, an efficient coolant circulation system and method for automobile parts molds, wherein a mold box is provided between an upper mold and a lower mold. When the upper mold and the lower mold inject plastic into the mold box, it can ensure that the pressure at various locations of the mold box is balanced, thereby improving the injection molding effect; a water pipe inlet and a water pipe outlet are provided on the right side of the upper mold, and the water pipe inlet and the water pipe outlet are respectively connected to the coolant circulation water inlet pipe and the coolant circulation water outlet pipe, thereby solving the problem that during the injection molding process of the mold box, cold water can be injected into the upper mold and the mold box can be cooled to play a cooling role. The system has a simple structure and is easy to use. The coolant in the coolant circulation component passes through the coolant into the upper mold, and the coolant circulates in the upper mold, thereby increasing the cooling efficiency of the mold.

[0032] According to the disclosure and teaching of the above description, those skilled in the art to which the present invention belongs may also make appropriate changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the scope of protection of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the present invention.

Claims

1. An efficient coolant circulation system for automobile parts molds, characterized by: The invention comprises a mold body, a coolant circulation component and an injection flow valve screw component. The mold body is provided with a coolant circulation component inside, one side of the mold body is provided with an injection port, and the discharge nozzle of the injection flow valve screw component is aligned with the injection port on one side of the mold body to inject the plastic.

2. The high-efficiency coolant circulation system for automobile parts mold according to claim 1 is characterized in that: The mold body includes an upper mold, a lower mold, and a mold box. The upper mold is arranged above the lower mold, a cavity is arranged between the upper mold and the lower mold, a mold box is arranged in the cavity, a mold box mounting position is arranged above the lower mold, and the mold box is embedded in the mold box mounting position above the lower mold.

3. The high-efficiency coolant circulation system for automobile parts mold according to claim 2 is characterized in that: A semi-groove is provided at the bottom right side of the upper mold, a mold box cavity is provided inside the upper mold, a plurality of heat dissipation holes are provided inside the mold box cavity, a semi-groove is provided at the top right side of the lower mold, and the semi-groove at the bottom right side of the upper mold and the semi-groove at the top right side of the lower mold form a complete injection molding port.

4. The high-efficiency coolant circulation system for automobile parts mold according to claim 3 is characterized in that: A water pipe inlet is arranged on the right side of the upper mold, and a water pipe outlet is arranged on one side of the water pipe inlet.

5. The high-efficiency coolant circulation system for automobile parts mold according to claim 4 is characterized in that: The coolant circulation water pipe assembly includes a coolant circulation inlet pipe, a coolant circulation outlet pipe, and a coolant circulation pipe. One end of the coolant circulation inlet pipe is inserted into the water pipe inlet on the right side of the upper mold and is connected to one end of the coolant circulation pipe. The other end of the coolant circulation inlet pipe extends to the outside of the upper mold and is connected to the inlet of an external coolant device. One end of the coolant circulation outlet pipe is inserted into the water pipe outlet on the right side of the upper mold and is connected to the other end of the coolant circulation pipe. The other end of the coolant circulation outlet pipe extends to the outside of the upper mold and is connected to the outlet of the external coolant device.

6. The high-efficiency coolant circulation system for automobile parts mold according to claim 5, characterized in that: The injection molding feed screw assembly includes a first injection molding screw, a second injection molding screw, and a flow valve assembly. One end of the first injection molding screw is provided with an injection molding feed port, the other end of the first injection molding screw is connected to one end of the flow valve assembly, the other end of the flow valve assembly is connected to one end of the second injection molding screw, and the other end of the second injection molding screw is provided with a discharge nozzle, and the discharge nozzle is aligned with the injection port to inject plastic. When the injection plastic enters the second injection molding screw from the injection molding feed port of the first injection molding screw, and then enters the mold box through the discharge nozzle of the second injection molding screw, the injection plastic in the mold box coincides with the mold box installation position above the lower mold, and then pressure is applied through the upper mold. The upper mold presses the mold box, and the injection plastic in the mold box overflows from the injection molding port, and the overflowed injection plastic enters the second injection molding screw through the discharge nozzle. The flow valve assembly prevents the injection plastic from overflowing from the second injection molding screw to the outside of the first injection molding screw.

7. The high-efficiency coolant circulation system for automobile parts mold according to claim 6 is characterized in that: The flow valve assembly includes a flow valve and a flow check spring. A through hole is provided inside the flow valve. One end of the check spring abuts against the through hole inside the flow valve, and the other end of the check spring abuts against one end of the second injection molding screw. The flow check spring prevents the injection material from overflowing from the second injection molding screw to the outside of the first injection molding screw.

8. The high-efficiency coolant circulation system for automobile parts mold according to claim 7 is characterized in that: The flow check spring is in an L-shape.

9. The high-efficiency coolant circulation system for automobile parts mold according to claim 6, characterized in that: The injection molding feed screw assembly also includes a heating rod, which seamlessly connects the first injection molding screw, the second injection molding screw, and the flow valve assembly to the first injection molding screw and the second injection molding screw, and the heating rod heats the injection material inside the first injection molding screw and the second injection molding screw.

10. The method for using the high-efficiency coolant circulation system for automobile parts mold according to any one of claims 1 to 9, characterized in that: The steps include: S1: First, the mold box is embedded in the mold box installation position above the lower mold, and the upper mold seamlessly connects the mold box and the mold box installation position above the lower mold to the lower mold; S2: After the mold box is sealed, it is buckled between the lower mold and the upper mold, and then the injection material is injected into the mold box through the injection feeding port of the first injection screw, and the upper mold applies pressure to the mold box; S3: After the upper mold in S2 applies pressure to the mold box, when the injection plastic enters the second injection molding screw from the injection molding feed port of the first injection molding screw and then enters the mold box through the discharge nozzle of the second injection molding screw, the injection plastic in the mold box coincides with the mold box installation position above the lower mold, and then the upper mold applies pressure, the upper mold applies pressure to the mold box, and the injection plastic in the mold box overflows from the injection plastic port, and the overflowed injection plastic enters the second injection molding screw through the discharge nozzle, and the flow check spring in the flow valve prevents the injection plastic from overflowing from the second injection molding screw to the outside of the first injection molding screw; S4: Pull out the second injection screw and the first injection screw, so that the mold box with a high temperature after demolding is immersed upward into the coolant in the upper mold for cooling treatment, and at the same time, the coolant is pressurized in the direction close to the mold box, so that the relative pressure between the mold box and the coolant is greater, and the flowing coolant can better cool the mold box. The coolant circulation pipe on the upper mold is connected to the flowing water to cool the coolant in the coolant circulation component.

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