Automobile interior trim part injection mold with external cooling system

Abstract

The utility model discloses an automobile interior trim part injection mold with an external cooling system, which comprises a base, a top plate is arranged above the base, a hydraulic lifting device is mounted in the middle of the upper end face of the top plate, an upper mold is mounted at the movable end of the hydraulic lifting device, and a lower mold is mounted at the movable end of the upper mold. A lower mold is mounted in the middle of the upper end surface of the base; the storage tank is arranged at the upper end of the interior of the base, a cooling rectangular pipe is installed in the storage tank, electric push rods are installed on the two sides of the bottom of the storage tank, and a plurality of sets of annularly-distributed cooling nozzles are arranged in the cooling rectangular pipe; and the air duct is arranged on the lower portion of the interior of the base, an evaporator is installed in the air duct, an air pipe is installed at the upper end of the air duct, a negative pressure fan is installed outside the air pipe, and the problems that an injection molding part cannot be rapidly cooled through an automobile interior trim part injection mold, and the cooling uniformity is poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile interior decoration injection molds, in particular to an automobile interior decoration injection mold with an external cooling system. Background Art

[0002] An injection mold for automotive interior parts is a special mold used to manufacture plastic parts for automotive interiors. An injection mold is a common manufacturing tool that injects molten plastic into a mold and forms the desired plastic product after cooling and solidification. In the automotive manufacturing industry, injection molds are widely used to manufacture various interior and exterior trims, such as dashboards, door panels, center consoles, seats, etc. An injection mold for automotive interior parts is characterized by high precision and high quality, which can ensure that the produced interior parts have accurate shapes and sizes, while meeting the requirements for high strength, wear resistance, high temperature resistance, flame retardancy, and other properties in automotive manufacturing.

[0003] For example, the Chinese authorized patent "An Injection Mold for Automotive Interior Parts" with announcement number CN210969731U includes a base, a top plate, an extension plate, a hydraulic rod, a lower mold, a spring, a push plate, a stud, a turning handle, a movable plate, a guide rod, a push rod, an upper mold, a motor, a lead screw, a slide plate, a limit plate and a positioning column. The utility model has a simple structure and is easy to operate. The movement of the slide plate is conducive to the installation of the upper mold and the lower mold, and it is convenient to fix the mold. The movement of the lower mold facilitates the adjustment of the position of the mold, which is conducive to the positioning between the upper mold and the lower mold, and avoids the occurrence of offsets that reduce the processing quality of the finished product.

[0004] Although the above-mentioned prior art can realize the injection molding of automobile interior parts, the temperature of the injection molded interior parts is relatively high. Failure to cool the parts in time will lead to a decrease in the surface quality of the injection molded parts. Although there are currently equipment for cooling the injection molded parts, the cooling uniformity is poor, resulting in a rough and uneven surface, and even cracks and bubbles that affect the appearance. Therefore, it does not meet the existing needs. In this regard, we propose an automobile interior injection mold with an external cooling system. Utility Model Content

[0005] The utility model aims to provide an automobile interior decoration injection mold with an external cooling system to solve the problem that the automobile interior decoration injection mold proposed in the above background technology cannot quickly cool the injection molded part and has poor cooling uniformity.

[0006] To achieve the above object, the utility model provides the following technical solution: an injection mold for automobile interior decoration parts with an external cooling system, comprising a base, a top plate is arranged above the base, a hydraulic lifting device is installed at the middle position of the upper end surface of the top plate, an upper mold is installed at the movable end of the hydraulic lifting device, a lower mold is installed at the middle position of the upper end surface of the base, and the position of the lower mold corresponds to that of the upper mold; and further comprising:

[0007] A storage tank is arranged at the upper end of the base, a cooling rectangular tube is installed inside the storage tank, and the cooling rectangular tube and the storage tank are slidably limited, electric push rods are installed on both sides of the bottom of the storage tank, and the upper ends of the electric push rods are fixed to the cooling rectangular tube, and a plurality of groups of annularly distributed cooling nozzles are arranged inside the cooling rectangular tube;

[0008] The air duct is arranged below the inside of the base, and one end of the air duct passes through the side of the base. An evaporator is installed inside the air duct, an air pipe is installed at the upper end of the air duct, and a negative pressure fan is installed outside the air pipe.

[0009] Preferably, each group of the cooling nozzles consists of three vertically distributed nozzles, the upper nozzle is inclined upward, the middle nozzle is horizontally arranged, the lower nozzle is inclined downward, and the nozzles are connected to the gas supply channel inside the cooling rectangular tube.

[0010] Preferably, a corrugated tube is provided between the air pipe and the air delivery channel inside the cooling rectangular tube, and both ends of the corrugated tube are sealed with the air pipe and the cooling rectangular tube respectively.

[0011] Preferably, a medium cooling mechanism is provided on one side inside the base, a condenser is fixedly installed on one side inside the medium cooling mechanism, an expansion valve is provided above the other side inside the medium cooling mechanism, a compressor is provided below the expansion valve, and the condenser, compressor, expansion valve and evaporator are connected by a medium pipeline.

[0012] Preferably, a heat dissipation grille is installed on the outside of the condenser, and the heat dissipation grille is fixed to the base by screws.

[0013] Preferably, guide slide bars are installed at the four corners between the base and the top plate, the guide slide bars penetrate the upper mold, and the guide slide bars and the upper mold are slidably limited.

[0014] Preferably, a dustproof net is provided at the air inlet of the air duct.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model separates the upper mold and the lower mold after the interior decoration parts are injection molded in the cooling rectangular tube. At this time, the compressor is turned on, and the refrigerant is sucked into the compressor and compressed inside the compressor. The compressed high-temperature and high-pressure refrigerant gas enters the condenser. The refrigerant is gradually cooled and converted into liquid through the cooling medium. The liquid refrigerant then passes through the expansion valve, and the pressure drops rapidly. The low-temperature and low-pressure liquid refrigerant enters the evaporator, and evaporates from liquid to gas by absorbing the heat of the surrounding environment. This process absorbs the heat in the environment, thereby achieving the refrigeration effect, and can rapidly reduce the temperature of the air duct. By turning on the negative pressure fan, the cold air inside the air duct is transported to the bellows through the air pipe, and then transported to the inside of the cooling rectangular tube by the bellows. Finally, the cooling air is sprayed toward the injection molded part through the cooling nozzle, thereby promoting the rapid cooling of the injection molded part, so as to achieve the purpose of rapid and stable structure.

[0017] 2. The utility model is provided with a storage groove. Under normal circumstances, the cooling rectangular tube is located inside the storage groove, which will not hinder the normal placement and removal of injection molded parts and the separation of the upper mold and the lower mold. After the interior decoration is injected, the upper mold is separated from the lower mold. Under the action of the ejection mechanism, the interior decoration is located above the lower mold. At this time, the electric push rod is turned on, and its movable end drives the cooling rectangular tube to rise until it is flush with the position of the interior decoration. At this time, the interior decoration is quickly cooled to reduce the generation of cooling dead corners.

[0018] 3. The utility model arranges three cooling nozzles with inclined angles inside the cooling rectangular tube. The upper cooling nozzle is inclined upward, the middle cooling nozzle is kept horizontal, and the lower cooling nozzle is inclined downward. As the electric push rod drives the cooling rectangular tube to rise and fall back and forth, the cold air sprayed by the cooling nozzle can fully contact the interior decoration parts, thereby improving the uniformity of the overall cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 This is a three-dimensional diagram of the cooling rectangular tube of the utility model in an extended state;

[0021] Figure 3 This is a schematic diagram of the internal structure of the base of the utility model;

[0022] Figure 4 For the utility model Figure 2 A partial enlarged view of area A.

[0023] In the figure: 1. base; 2. top plate; 3. upper mold; 4. lower mold; 5. hydraulic lifting device; 6. guide slide bar; 7. storage slot; 8. cooling rectangular tube; 9. heat dissipation grille; 10. air duct; 11. electric push rod; 12. bellows; 13. medium cooling mechanism; 14. condenser; 15. compressor; 16. expansion valve; 17. evaporator; 18. air pipe; 19. negative pressure fan; 20. cooling nozzle. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-4 The utility model provides an embodiment: an injection mold for automobile interior decoration with an external cooling system, comprising a base 1, a top plate 2 is arranged above the base 1, a hydraulic lifting device 5 is installed at the middle position of the upper end surface of the top plate 2, an upper mold 3 is installed at the movable end of the hydraulic lifting device 5, a lower mold 4 is installed at the middle position of the upper end surface of the base 1, and the position of the lower mold 4 corresponds to the position of the upper mold 3; and further comprising:

[0026] A storage tank 7 is arranged at the upper end of the base 1, a cooling rectangular tube 8 is installed inside the storage tank 7, and the cooling rectangular tube 8 and the storage tank 7 are slidably limited, electric push rods 11 are installed on both sides of the bottom of the storage tank 7, and the upper end of the electric push rod 11 is fixed to the cooling rectangular tube 8, and a plurality of groups of annularly distributed cooling nozzles 20 are arranged inside the cooling rectangular tube 8;

[0027] The air duct 10 is arranged at the lower part of the base 1, and one end of the air duct 10 passes through the side of the base 1. An evaporator 17 is installed inside the air duct 10, an air pipe 18 is installed at the upper end of the air duct 10, and a negative pressure fan 19 is installed outside the air pipe 18.

[0028] After the interior trim is injection molded, the upper mold 3 and the lower mold 4 will be separated. At this time, the compressor 15 is turned on, and the refrigerant is sucked into the compressor 15 and compressed inside the compressor 15. The compressed high-temperature and high-pressure refrigerant gas enters the condenser 14. The refrigerant is gradually cooled and converted into liquid through the cooling medium. The liquid refrigerant then passes through the expansion valve 16, and the pressure drops rapidly. The low-temperature and low-pressure liquid refrigerant enters the evaporator 17, and evaporates from liquid to gas by absorbing the heat of the surrounding environment. This process absorbs the heat in the environment, thereby achieving a refrigeration effect, which can rapidly reduce the temperature of the air duct 10. By turning on the negative pressure fan 19, the cold air inside the air duct 10 is transported to the bellows 12 through the air pipe 18, and then transported to the inside of the cooling rectangular tube 8 by the bellows 12, and finally the cooling air is sprayed toward the injection molded part through the cooling nozzle 20, thereby promoting the rapid cooling of the injection molded part.

[0029] See also Figure 1 and Figure 4 Each group of cooling nozzles 20 is composed of three vertically distributed nozzles, the upper nozzle is inclined upward, the middle nozzle is horizontally arranged, and the lower nozzle is inclined downward. The nozzles are connected to the air supply channel inside the cooling rectangular tube 8 and can fully contact the interior decoration parts, thereby improving the uniformity of the overall cooling.

[0030] See also Figure 2 and Figure 3 A bellows 12 is provided between the air pipe 18 and the internal air delivery channel of the cooling rectangular tube 8, and the two ends of the bellows 12 are sealed with the air pipe 18 and the cooling rectangular tube 8 respectively, and can move synchronously with the lifting and lowering of the electric push rod 11 to ensure the normal delivery of cooling air.

[0031] See also Figure 3 A medium cooling mechanism 13 is provided on one side of the base 1, a condenser 14 is fixedly installed on one side of the medium cooling mechanism 13, an expansion valve 16 is provided above the other side of the medium cooling mechanism 13, a compressor 15 is provided below the expansion valve 16, and the condenser 14, the compressor 15, the expansion valve 16 and the evaporator 17 are connected by a medium pipeline, and the temperature in the air duct 10 is reduced by using medium refrigeration.

[0032] See also Figure 1 A heat dissipation grille 9 is installed outside the condenser 14, and the heat dissipation grille 9 is fixed to the base 1 by screws.

[0033] See also Figure 1 Guide slide bars 6 are installed at the four corners between the base 1 and the top plate 2. The guide slide bars 6 penetrate the upper mold 3, and the guide slide bars 6 and the upper mold 3 are slidably limited to improve the accuracy of the upper mold 3.

[0034] Furthermore, a dustproof net is provided at the air inlet of the air duct 10 to prevent dust from entering the interior of the air duct 10 .

[0035] Working principle: Under normal circumstances, the cooling rectangular tube 8 is located inside the storage groove 7, and will not hinder the normal placement and removal of injection molded parts and the separation of the upper mold 3 and the lower mold 4. After the interior decoration is injected, the upper mold 3 is separated from the lower mold 4. Under the action of the ejection mechanism, the interior decoration is located above the lower mold 4. At this time, the electric push rod 11 is turned on, and its active end drives the cooling rectangular tube 8 to rise until it is flush with the position of the interior decoration. Since the upper cooling nozzle 20 is tilted upward, the middle cooling nozzle 20 remains horizontal, and the lower cooling nozzle 20 is tilted downward. As the electric push rod 11 drives the cooling rectangular tube 8 to reciprocate and rise and fall, the cold air sprayed by the cooling nozzle 20 can fully contact the interior decoration, thereby improving the uniformity of the overall cooling.

[0036] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An injection mold for automobile interior decoration parts with an external cooling system, comprising a base (1), a top plate (2) being arranged above the base (1), a hydraulic lifting device (5) being installed at the middle position of the upper end surface of the top plate (2), an upper mold (3) being installed at the movable end of the hydraulic lifting device (5), a lower mold (4) being installed at the middle position of the upper end surface of the base (1), and the position of the lower mold (4) corresponds to that of the upper mold (3); Features: Also includes: A storage groove (7) is arranged at the upper end of the base (1), a cooling rectangular tube (8) is installed inside the storage groove (7), and the cooling rectangular tube (8) and the storage groove (7) are slidably limited, electric push rods (11) are installed on both sides of the bottom of the storage groove (7), and the upper end of the electric push rod (11) is fixed to the cooling rectangular tube (8), and a plurality of groups of cooling nozzles (20) distributed in an annular manner are arranged inside the cooling rectangular tube (8); An air duct (10) is arranged below the interior of the base (1), and one end of the air duct (10) passes through the side of the base (1). An evaporator (17) is installed inside the air duct (10), an air pipe (18) is installed at the upper end of the air duct (10), and a negative pressure fan (19) is installed outside the air pipe (18).

2. The automotive interior decoration injection mold with an external cooling system according to claim 1, characterized in that: Each group of cooling nozzles (20) consists of three vertically distributed nozzles, the upper nozzle is inclined upward, the middle nozzle is horizontally arranged, and the lower nozzle is inclined downward, and the nozzles are connected to the gas transmission channel inside the cooling rectangular tube (8).

3. The automotive interior decoration injection mold with an external cooling system according to claim 2, characterized in that: A corrugated tube (12) is provided between the air pipe (18) and the air delivery channel inside the cooling rectangular tube (8), and both ends of the corrugated tube (12) are sealed with the air pipe (18) and the cooling rectangular tube (8) respectively.

4. The automotive interior decoration injection mold with an external cooling system according to claim 1, characterized in that: A medium cooling mechanism (13) is provided on one side of the base (1), a condenser (14) is fixedly mounted on one side of the medium cooling mechanism (13), an expansion valve (16) is provided above the other side of the medium cooling mechanism (13), a compressor (15) is provided below the expansion valve (16), and the condenser (14), the compressor (15), the expansion valve (16) and the evaporator (17) are connected via a medium pipeline.

5. The automotive interior decoration injection mold with an external cooling system according to claim 4, characterized in that: A heat dissipation grille (9) is installed outside the condenser (14), and the heat dissipation grille (9) is fixed to the base (1) by screws.

6. The automotive interior decoration injection mold with an external cooling system according to claim 1, characterized in that: Guide slide bars (6) are installed at the four corners between the base (1) and the top plate (2); the guide slide bars (6) penetrate the upper mold (3), and the guide slide bars (6) and the upper mold (3) are slidably limited.

7. The automotive interior decoration injection mold with an external cooling system according to claim 1, characterized in that: A dustproof net is provided at the air inlet of the air duct (10).

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