Efficient coolant circulation system for automotive component molds and method thereof

Abstract

The application provides a kind of high-efficiency cooling liquid circulating system of automobile parts mould, including mould body, cooling liquid circulating assembly, injection flow valve screw rod assembly, cooling liquid circulating assembly is equipped in the inside of mould body, the side of mould body is equipped with injection material port, the discharge nozzle of injection flow valve screw rod assembly is aligned with the injection material port of the side of lower part of mould body and carries out injection material, the beneficial effect of the application is that: the mould box is equipped between upper mould and lower mould, when upper mould and lower mould carry out injection material to mould box, it can ensure that the pressure of each part of mould box is balanced, and the injection effect is improved;Water pipe inlet and water pipe outlet are equipped on the right side of upper mould, water pipe inlet and water pipe outlet are respectively connected with cooling liquid circulating inlet pipe and cooling liquid circulating outlet pipe, which solves the problem of injecting cold water into upper mould and cooling mould box during the injection process of mould box, and plays a cooling role.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of injection mold, in particular to an efficient cooling liquid circulation system for automobile parts mold and a method thereof. BACKGROUND

[0002] The injection mold is a mold applied to injection molding. At a certain temperature, plastic raw materials are heated to a molten state by using a heating device that can stir, then extruded into a mold, cooled and formed in the mold, and after demolding and subsequent processing, plastic products can be obtained. This process is called injection molding. The injection mold is a mold that assists the shaping of plastic raw materials and is required for cooling and forming.

[0003] The injection mold is generally composed of a concave mold assembly and a convex mold assembly. Higher-precision injection molds also use a stripper plate between the two for assistance. During the injection process, one mold plate is fixed in position, and the other mold plate is set up as a reciprocating structure. In the closed mold state, injection and cooling are completed, and demolding is performed after injection is completed. Cooling structures are provided in each part of the injection mold to fit the core. By injecting water or other cooling liquid inside, rapid cooling and forming are achieved.

[0004] The cooling water path set in the mold is mainly processed by drilling. Due to the difficulty of drilling, the internal water path is generally a straight line path. Currently, there are also molds that can set up a serpentine loop, but such molds generally have the problem of low cooling efficiency. Using a fixed water path for heat dissipation will inevitably result in uneven heat dissipation in each part, and the position far from the water path will be slow to dissipate heat, resulting in a long time for heat dissipation and affecting production efficiency.

[0005] Various molds and tools. In short, a mold is a tool used to make shaped articles. Such a tool is composed of various parts, and different molds are composed of different parts. It mainly realizes the processing of the shape of the article by changing the physical state of the material being formed. However, the cooling system of the existing hot stamping die consumes a lot of electricity and cannot work for a long time if the power is cut off. At the same time, the cooling method is single, the cooling speed is slow, and the cooling effect is not obvious. SUMMARY

[0006] The application aims at solving the above technical problems and provides a novel high-efficiency cooling liquid circulating system for automobile part molds and a method thereof.

[0007] The application is realized by the following technical solutions:

[0008] The high-efficiency cooling liquid circulating system for automobile part molds comprises a mold body, a cooling liquid circulating assembly and an injection flow valve screw rod assembly.

[0009] Further, the mold body comprises an upper mold, a lower mold and a mold box.

[0010] Further, the upper mold is provided with a half-groove at the right bottom, and the upper mold is provided with a mold box cavity inside, which is provided with a plurality of heat dissipation through holes.

[0011] Further, the upper mold is provided with a water pipe inlet at the right side.

[0012] Further, the cooling liquid circulating water pipe assembly comprises a cooling liquid circulating inlet pipe, a cooling liquid circulating outlet pipe and a cooling liquid circulating pipe. The other end of the cooling liquid circulating inlet pipe is extended outside the upper mold and connected with the inlet of an external cooling liquid tank. The other end of the cooling liquid circulating outlet pipe is extended outside the upper mold and connected with the outlet of the external cooling liquid tank.

[0013] As further, the injection feeding screw assembly comprises a first injection screw, a second injection screw, a flow valve assembly, one end of the first injection screw is provided with an injection feeding port, the other end of the first injection screw is communicated with one end of the flow valve assembly, the other end of the flow valve assembly is communicated with one end of the second injection screw, the other end of the second injection screw is provided with a discharge nozzle, the discharge nozzle is aligned with the injection port for injecting plastic, when the plastic is injected from the injection feeding port of the first injection screw into the second injection screw, and then enters the mold box through the discharge nozzle of the second injection screw, the plastic in the mold box is overlapped with the mold box mounting position above the lower mold, and then the upper mold is pressed to press the mold box, the plastic in the mold box is overflowed from the injection port, and the overflowed plastic enters the second injection screw through the discharge nozzle, and the flow valve assembly prevents the plastic from overflowing from the second injection screw to the outside of the first injection screw.

[0014] As further, the flow valve assembly comprises a flow valve and a flow check spring, the flow valve is internally provided with a through hole, one end of the flow check spring abuts against the through hole in the flow valve, and the other end of the flow check spring abuts against one end of the second injection screw, and the flow check spring prevents the plastic from overflowing from the second injection screw to the outside of the first injection screw.

[0015] As further, the flow check spring is in the shape of L.

[0016] As further, the injection feeding screw assembly further comprises a heating rod, the heating rod seamlessly docks and engages the first injection screw, the second injection screw and the flow valve assembly on the first injection screw and the second injection screw, and the heating rod heats the plastic in the first injection screw and the second injection screw.

[0017] A use method of an efficient cooling liquid circulating system of an automobile part mold, comprising the following steps:

[0018] S1: first embed the mold box in the mold box mounting position above the lower mold, and seamlessly dock and engage the mold box and the mold box mounting position above the lower mold on the lower mold by the upper mold;

[0019] S2: after sealing the mold box, engage between the lower mold and the upper mold, then inject the plastic into the mold box through the injection feeding port of the first injection screw, and press the mold box by the upper mold;

[0020] S3: After the upper mold in S2 exerts pressure on the mold box, when the injection material enters the second injection screw from the injection inlet of the first injection screw, and then enters the mold box through the discharge nozzle of the second injection screw, the injection material in the mold box coincides with the mold box installation position above the lower mold, and then the upper mold exerts pressure on the mold box. The injection material in the mold box flows out of the injection material port, and the overflowed injection material enters the second injection screw through the discharge nozzle. The flow check spring in the flow valve prevents the injection material from overflowing from the second injection screw to the outside of the first injection screw.

[0021] S4: After the second injection screw and the first injection screw are pulled out, the mold box with a very high temperature after demolding is immersed into the cooling liquid in the upper mold for cooling treatment, and the cooling liquid is pressed towards the direction close to the mold box, so that the relative pressure between the mold box and the cooling liquid is larger, and the flowing cooling liquid can better cool and cool the mold box. The cooling liquid circulating pipe on the upper mold is connected to the flowing water flow to cool the cooling liquid in the cooling liquid circulating assembly.

[0022] The beneficial effects of the present application are that: by providing a mold box between the upper mold and the lower mold, the upper mold and the lower mold can ensure that the pressure on each part of the mold box is balanced when injecting the injection material in the mold box, improving the injection effect; the water inlet and the water outlet are provided on the right side of the upper mold, and the water inlet and the water outlet are respectively connected with the cooling liquid circulating inlet pipe and the cooling liquid circulating outlet pipe, which solves the problem of injecting cold water into the upper mold and cooling the mold box during the injection process of the mold box, and has the advantages of simple structure, convenient use, and cooling effect. The cooling liquid in the cooling liquid circulating assembly penetrates into the upper mold, and the cooling liquid circulates in the upper mold, increasing the cooling efficiency of the mold. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The present application is a high-efficiency cooling liquid circulating system structure diagram of an automobile part mold;

[0024] Figure 2 The present application is an explosion structure diagram of a high-efficiency cooling liquid circulating system of an automobile part mold;

[0025] Figure 3 The present application is a structure diagram of a mold body and a cooling liquid circulating assembly;

[0026] Figure 4 The present application is an explosion structure diagram of a mold body and a cooling liquid circulating assembly;

[0027] Figure 5 The present application is a structure diagram of an injection flow valve screw assembly;

[0028] Figure 6The explosion structure schematic diagram of the injection flow valve screw rod assembly of the application;

[0029] Figure 7 The structure schematic diagram of the flow valve assembly of the application;

[0030] Figure 8 The explosion structure schematic diagram of the flow valve assembly of the application;

[0031] The figure mark: 1, the mould body; 11, injection plastics mouth; 12, upper mould; 120, half recess; 121, mould box cavity; 122, heat dissipation through hole; 123, water pipe import; 124, water pipe export; 13, lower mould; 130, mould box installation site; 131, half recess; 14, mould box; 2, cooling liquid circulation assembly; 21, cooling liquid circulation import water pipe; 22, cooling liquid circulation export water pipe; 23, cooling liquid circulation pipe; 3, injection flow valve screw rod assembly; 31, first injection screw rod; 310, injection import; 32, second injection screw rod; 320, export nozzle; 33, flow valve assembly; 330, flow valve; 3301, through hole; 331, flow check spring; 34, heating rod. DETAILED DESCRIPTION

[0032] The application is further described below in conjunction with the drawings and specific embodiments:

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application; the description and the drawings are to be regarded as illustrative in nature and are not intended to be limiting of the application; the terminology used in the description and the claims herein and the above listed accompanying drawings is not intended to be limiting of the application; the terms "including" and "comprising" and variations thereof as used in the specification and the claims herein are intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. The terms "first," "second," and the like, as used in the description and the claims herein are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Unless otherwise defined, all terms used in the description and the claims herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0034] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiment, or to a single alternative embodiment. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0035] Referring to the drawings as Figures 1-8As shown, an efficient cooling liquid circulating system for an automobile part mold includes a mold body 1, a cooling liquid circulating assembly 2, and an injection flow valve screw rod assembly 3. The mold body 1 is internally provided with the cooling liquid circulating assembly 2. The mold body 1 is provided with an injection material port 11 on one side. The injection flow valve screw rod assembly 3 is provided with an injection nozzle 320 that is aligned with the injection material port 11 on one side of the mold body 1.

[0036] As a preferred, the mold body 1 includes an upper mold 12, a lower mold 13, and a mold box 14. The upper mold 12 is arranged above the lower mold 13. A cavity is arranged between the upper mold 12 and the lower mold 13. The mold box 14 is arranged in the cavity. The lower mold 13 is provided with a mold box mounting position 130 above the lower mold 13. The mold box 14 is embedded in the mold box mounting position 130 above the lower mold 13.

[0037] As a preferred, the upper mold 12 is provided with a half-groove 120 at the bottom of the right side. The upper mold 12 is internally provided with a mold box cavity 121. A plurality of heat dissipation through holes 122 are arranged in the mold box cavity 121. The lower mold 13 is provided with a half-groove 131 at the top of the right side. The half-groove 120 at the bottom of the right side of the upper mold 12 and the half-groove 131 at the top of the right side of the lower mold 13 form a complete injection material port 11.

[0038] As a preferred, the upper mold 12 is provided with a water pipe inlet 123 at the right side. The water pipe inlet 123 is provided with a water pipe outlet 124 on one side.

[0039] As a preferred, the cooling liquid circulating water pipe assembly 2 includes a cooling liquid circulating water inlet pipe 21, a cooling liquid circulating water outlet pipe 22, and a cooling liquid circulating pipe 23. One end of the cooling liquid circulating water inlet pipe 21 is inserted into the water pipe inlet 123 at the right side of the upper mold 12 and is in communication with one end of the cooling liquid circulating pipe 23. The other end of the cooling liquid circulating water inlet pipe 21 extends outside the upper mold 12 and is connected to an inlet of an external cooling liquid device. One end of the cooling liquid circulating water outlet pipe 22 is inserted into the water pipe outlet 124 at the right side of the upper mold 12 and is in communication with the other end of the cooling liquid circulating pipe 23. The other end of the cooling liquid circulating water outlet pipe 22 extends outside the upper mold 12 and is connected to an outlet of an external cooling liquid tank.

[0040] As preferably, the injection feeding screw rod assembly 3 comprises a first injection screw rod 31, a second injection screw rod 32, a flow valve assembly 33, one end of the first injection screw rod 31 is provided with an injection feeding port 310, the other end of the first injection screw rod 31 is communicated with one end of the flow valve assembly 33, the other end of the flow valve assembly 33 is communicated with one end of the second injection screw rod 32, the other end of the second injection screw rod 32 is provided with a discharge nozzle 320, the discharge nozzle 320 is aligned with the injection port 11 to inject the plastic, when the plastic enters into the second injection screw rod 32 from the injection feeding port 310 of the first injection screw rod 31, and then enters into the discharge nozzle 320 of the second injection screw rod 32, the 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 is pressed to the mold box 13, the plastic in the mold box 13 is overflowed from the injection port 11, the overflowed plastic enters into the second injection screw rod 32 through the discharge nozzle 320, and the flow valve assembly 33 prevents the plastic from overflowing from the second injection screw rod 32 to the outside of the first injection screw rod 31.

[0041] As preferably, the flow valve assembly 33 comprises a flow valve 330 and a flow check spring 331, the flow valve 330 is internally provided with a through hole 3301, one end of the flow check spring 331 abuts against the through hole 3301 in the flow valve 330, and the other end of the flow check spring 331 abuts against one end of the second injection screw rod 32, the flow check spring 331 prevents the plastic from overflowing from the second injection screw rod 32 to the outside of the first injection screw rod 31.

[0042] As preferably, the flow check spring 331 is in the shape of L.

[0043] As preferably, the injection feeding screw rod assembly 3 further comprises a heating rod 34, the heating rod 34 seamlessly docks and clamps the first injection screw rod 31, the second injection screw rod 32 and the flow valve assembly 33 on the first injection screw rod 31 and the second injection screw rod 32, and the heating rod 34 heats the plastic in the first injection screw rod 31 and the second injection screw rod 32.

[0044] A use method of an efficient cooling liquid circulating system of an automobile part mold, comprising the following steps:

[0045] S1: first embed the mold box 14 on the mold box mounting position 130 above the lower mold 13, and seamlessly dock and clamp the mold box 14 and the mold box mounting position 130 above the lower mold 13 on the lower mold 13 by the upper mold 12;

[0046] S2: after the mold box 13 is sealed, buckling between the lower mold 13 and the upper mold 12, and then injecting the injection material into the mold box 14 through the injection inlet 310 of the first injection screw 31, the upper mold 12 is pressed on the mold box 14;

[0047] S3: after the upper mold 12 in S2 is pressed on the mold box 14, when the injection material enters the second injection screw 32 from the injection inlet 310 of the first injection screw 31, and then enters the mold box 14 through the discharge nozzle 320 of the second injection screw 32, the injection material in the mold box 14 coincides with the mold box installation position 130 above the lower mold 13, and then the upper mold 12 is pressed on the mold box 14, the injection material in the mold box 14 overflows from the injection material port 11, and the overflowed injection material enters the second injection screw 32 through the discharge nozzle 320, and the flow check spring 331 in the flow valve 33 prevents the injection material from overflowing from the second injection screw 32 to the outside of the first injection screw 31;

[0048] S4: after the second injection screw 32 and the first injection screw 31 are pulled out, the mold box 14 with high temperature after demolding is immersed into the cooling liquid in the upper mold 12 for cooling treatment, and the cooling liquid is pressed towards the direction close to the mold box 14, so that the relative pressure between the mold box 14 and the cooling liquid is larger, and the flowing cooling liquid can better cool and cool the mold box 14, and the cooling liquid circulating pipe 23 on the upper mold 12 is connected to the flowing water flow to cool the cooling liquid in the cooling liquid circulating assembly 2.

[0049] In summary, the efficient cooling liquid circulating system and method of the automobile part mold can ensure that the pressure of each part of the mold box is balanced when the upper mold and the lower mold inject the injection material into the mold box, and the injection effect is improved; the water inlet and the water outlet are arranged on the right side of the upper mold, the water inlet and the water outlet are respectively connected with the cooling liquid circulating inlet pipe and the cooling liquid circulating outlet pipe, the cooling effect is achieved by injecting cold water into the upper mold and cooling the mold box during the injection process of the mold box, the structure is simple, the use is convenient, the cooling liquid in the cooling liquid circulating assembly penetrates into the upper mold, and the cooling liquid circulates in the upper mold, so that the cooling efficiency of the mold is improved.

[0050] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make appropriate changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A high efficiency coolant circulation system for an automotive component mold, characterized by: The utility model provides a mould body, cooling liquid circulation assembly, injection flow valve screw rod assembly, the inside of mould body is equipped with cooling liquid circulation assembly, one side of mould body is equipped with injection material mouth, the injection material of injection flow valve screw rod assembly's discharge nozzle aligns one side of mould body injection material mouth carries out injection material, the mould body includes upper mould, lower mould, mould box, the upper mould is equipped with in the lower mould top, is equipped with cavity between the upper mould with the lower mould, is equipped with mould box in the cavity, the upper mould of lower mould is equipped with mould box installation site, the mould box is embedded in the mould box installation site of the upper mould of lower mould, the injection flow valve screw rod assembly includes first injection screw rod, second injection screw rod, flow valve assembly, the first injection screw rod one end is equipped with injection feed inlet, the first injection screw rod other end with the flow valve assembly one end is linked together, the flow valve assembly other end with the second injection screw rod one end is linked together, the second injection screw rod other end is equipped with discharge nozzle, the discharge nozzle aligns injection material mouth and carries out injection material, when injection material enters into the second injection screw rod from the injection feed inlet of first injection screw rod, then passes the discharge nozzle of second injection screw rod and enters into the mould box, the injection material in mould box coincides with the mould box installation site of the upper mould of lower mould, then passes the upper mould and carries out pressure, the upper mould presses the mould box, and the injection material in mould box overflows from injection material mouth, and the overflowed injection material enters into the second injection screw rod through the discharge nozzle, and the flow valve assembly prevents the overflow of injection material from the second injection screw rod to the outside of first injection screw rod, the injection flow valve screw rod assembly still includes heating rod, the heating rod will flow valve assembly seamlessly butt joint and be buckled on the first injection screw rod and the second injection screw rod, and the heating rod heats the injection material in the first injection screw rod and the second injection screw rod.

2. The efficient cooling fluid circulation system for automobile parts mold as claimed in claim 1 wherein: The upper mould right side bottom is equipped with half recess, the upper mould is equipped with mould box cavity inside, the mould box cavity inside is equipped with a plurality of heat dissipation through holes, the lower mould right side top is equipped with half recess, the half recess of the upper mould right side bottom and the half recess of the lower mould right side top form a complete injection material mouth.

3. The efficient cooling fluid circulation system for automobile parts mold as claimed in claim 2 wherein: The upper mould right side is equipped with water pipe import, and the water pipe import one side is equipped with water pipe export.

4. The efficient cooling fluid circulation system for automobile parts mold as claimed in claim 3 wherein: The cooling liquid circulation assembly includes cooling liquid circulation water inlet pipe, cooling liquid circulation water outlet pipe, cooling liquid circulation pipe, one end of the cooling liquid circulation water inlet pipe is inserted in the water pipe import of the upper mould right side and is linked together with one end of the cooling liquid circulation pipe, the other end of the cooling liquid circulation water inlet pipe extends to the upper mould outside and is connected with the import of external cooling liquid equipment, one end of the cooling liquid circulation water outlet pipe is inserted in the water pipe export of the upper mould right side and is linked together with the other end of the cooling liquid circulation pipe, the other end of the cooling liquid circulation water outlet pipe extends to the upper mould outside and is connected with the export of external cooling liquid equipment.

5. The efficient cooling fluid circulation system for automobile parts mold as claimed in claim 4 wherein: The flow valve assembly comprises a flow valve and a flow check spring, the flow valve is internally provided with a through hole, one end of the check spring abuts against the through hole in the flow valve, and the other end of the check spring abuts against one end of a second injection screw, and the flow check spring prevents overflow of injection material from the second injection screw to the outside of the first injection screw.

6. The efficient cooling fluid circulation system for automobile parts mold as claimed in claim 5 wherein: The flow check spring is in the shape of L.

7. The method of using the efficient cooling fluid circulation system for the automotive component mold according to claim 6, characterized in that, The method comprises the following steps: S1: first embed the mold box in the mold box mounting position above the lower mold, and the upper mold is seamlessly connected and buckled to the lower mold with the mold box and the mold box mounting position above the lower mold; S2: after the mold box is sealed, buckle between the lower mold and the upper mold, then inject the injection material into the mold box through the injection inlet of the first injection screw, and the upper mold applies pressure to the mold box; S3: after the upper mold applies pressure to the mold box in S2, when the injection material enters the second injection screw from the injection inlet of the first injection screw, and then enters the mold box through the discharge nozzle of the second injection screw, the injection material in the mold box coincides with the mold box mounting position above the lower mold, and then the upper mold applies pressure, the upper mold applies pressure to the mold box, the injection material in the mold box overflows from the injection material port, the overflowed injection material enters the second injection screw through the discharge nozzle, and the flow check spring in the flow valve prevents overflow of the injection material from the second injection screw to the outside of the first injection screw; S4: then pull out the second injection screw and the first injection screw, so that the mold box with high temperature after demolding is immersed into the cooling liquid in the upper mold for cooling treatment, and the cooling liquid is pressed towards the direction close to the mold box, so that the relative pressure between the mold box and the cooling liquid is larger, the flowing cooling liquid can better cool and cool the mold box, and the cooling liquid circulating pipe on the upper mold is connected to the flowing water flow to cool the cooling liquid in the cooling liquid circulating assembly.

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