High-temperature material injection molding device

Abstract

The utility model discloses a high-temperature material injection molding device which comprises a lower mold, an upper mold is arranged at the top of the lower mold, a water tank is fixedly installed on the front face of the lower mold, and a liquid pump is fixedly installed on the right side of the water tank. The liquid pump is used for pumping out cooling liquid in the water tank and guiding the cooling liquid into the cooling tank through the liquid inlet pipe, so that the cooling liquid flows through the cooling tank and flows back to the interior of the water tank through the liquid outlet pipe, and when the cooling liquid flows through the interior of the cooling tank, the cooling liquid cools an injection molding part in the cavity; according to the injection molding device, the injection molding part is quickly molded, so that the problem that the injection molding part is difficult to demold due to the fact that the side of the injection molding part is adhered to the inner wall of the cavity is avoided, the purpose of recycling cooling liquid is achieved, and the problems that when an existing injection molding device performs injection molding on a high-temperature material, the cooling efficiency of the injection molding part is poor, the injection molding part is molded slowly, and the product quality is poor are solved. The edge side of the injection molding part is easily adhered to the cavity, so that the demolding of the injection molding part is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature material injection molding, in particular to a high-temperature material injection molding device. Background Art

[0002] Materials that can withstand certain stresses and have resistance to oxidation and thermal corrosion at temperatures above 550°C are suitable for manufacturing important load-bearing structural parts of aircraft engines and rocket engines. High-temperature materials include high-temperature alloys, dispersion-strengthened alloys, refractory alloys, metal fiber-reinforced high-temperature composite materials, and ceramic materials. Injection molding devices are required for high-temperature materials.

[0003] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: the existing injection molding devices have poor cooling efficiency for injection molded parts when injection molding high-temperature materials, resulting in slow molding of injection molded parts and easily causing the sides of the injection molded parts to stick to the cavity. At the same time, considering the shrinkage and thermal expansion coefficient of high-temperature materials, when demolding the injection molded parts made of high-temperature materials, there will be friction between the sides of the injection molded parts and the cavity, resulting in the injection molded parts being affected by demolding; therefore, a high-temperature material injection molding device is proposed to address the above-mentioned problems. Utility Model Content

[0004] The utility model aims to provide a high-temperature material injection molding device, which has the advantages of improving the cooling effect of injection molded parts and facilitating the demoulding of injection molded parts. It solves the problem that the existing injection molding device has poor cooling efficiency for injection molded parts when injection molding high-temperature materials, resulting in slow molding of injection molded parts, and easily causing the sides of the injection molded parts to stick to the cavity, which affects the demoulding of the injection molded parts.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-temperature material injection molding device, comprising a lower mold, an upper mold is arranged on the top of the lower mold, a water tank is fixedly installed on the front of the lower mold, a liquid pump is fixedly installed on the right side of the water tank, the output end of the liquid pump is connected with a liquid inlet pipe, a cavity is opened on the top of the lower mold, a cooling groove is opened inside the lower mold and around the cavity, both sides of the cooling groove are connected with through grooves, the other side of the liquid inlet pipe is connected with the through groove, the through groove on the left side of the cooling groove is connected with a liquid outlet pipe, the other side of the liquid outlet pipe is connected with the bottom of the left side of the water tank, a heat sink is fixedly installed on the front of the water tank, the front of the water tank and the inside of the heat sink are provided with evenly distributed heat sinks, the top and bottom of the heat sink are provided with air inlets, two heat dissipation motors are fixedly installed inside the heat sink and on the front of the heat sink, the bottom on the right side of the water tank is connected with a drain pipe, a sealing cover is arranged on the top of the water tank, and the side of the inner cavity of the cavity is coated with boron nitride high temperature resistant coating.

[0006] The effects achieved by the above components are as follows: a water tank is provided for storing coolant, a liquid pump is provided for pumping out the coolant in the water tank and introducing it into the cooling tank through the liquid inlet pipe, so that the coolant flows through the cooling tank and flows back to the inside of the water tank through the liquid outlet pipe. When the coolant flows through the inside of the cooling tank, the coolant cools the injection molded part in the cavity, so that the injection molded part is quickly formed, thereby avoiding the side of the injection molded part from sticking to the inner wall of the cavity, which makes it difficult to demold the injection molded part, and at the same time achieves the purpose of recycling the coolant. A boron nitride high temperature resistant coating is provided for reducing the friction coefficient between the injection molded part and the inner wall of the cavity, so that the injection molded part is conveniently demolded. A heat sink is provided for extracting the heat of the coolant in the water tank and dissipating it to the inside of the heat sink, so that the coolant has a heat dissipation and cooling effect, thereby improving the cooling effect of the coolant on the injection molded part. A heat dissipation motor is provided for discharging the air inside the heat sink, and at the same time, external air enters the inside of the heat sink through the air inlet, so that airflow is formed inside the heat sink, thereby improving the heat dissipation effect of the heat sink.

[0007] Preferably, the heat dissipation box is provided with evenly distributed guide plates inside, and the guide plates are located on the front side of the heat dissipation motor.

[0008] The effect achieved by the above components is: the guide plate is provided to guide the air blown out by the heat dissipation motor and prevent dust from falling into the interior of the heat dissipation box.

[0009] Preferably, the surface of the liquid outlet pipe is connected to a filter box, and a filter screen is arranged inside the filter box.

[0010] The effect achieved by the above components is: by setting up a filter box and an internal filter screen to cooperate with each other to filter the coolant flowing through the outlet pipe, impurities in the coolant are prevented from entering the water tank again, avoiding affecting the cooling effect of the coolant on the injection molded parts inside the cavity.

[0011] Preferably, positioning protrusions are fixedly mounted on both sides of the bottom of the upper mold, and positioning grooves are opened on both sides of the top of the lower mold.

[0012] The effect achieved by the above components is: by setting the positioning protrusion and the positioning groove to cooperate with each other, it is used to improve the positioning of the lower mold and the upper mold when the mold is closed, and prevent the lower mold and the upper mold from deviating when the mold is closed.

[0013] Preferably, a receiving groove is provided at the bottom of the inner cavity of the mold cavity, and a top plate is provided inside the receiving groove.

[0014] The effect achieved by the above components is: by providing a storage groove for storing the top plate, the top plate is prevented from interfering with the shape of the injection molded part.

[0015] Preferably, a groove is provided at the bottom of the lower mold, and a fixing plate is fixedly installed inside the groove, an electric push rod is fixedly installed on the top of the fixing plate, and the output end of the electric push rod is fixedly connected to the bottom of the top plate.

[0016] The effect achieved by the above components is: by setting a fixing plate for installing and fixing the electric push rod, the stability of the electric push rod is improved, and the top plate is driven to move upward under the action of the electric push rod, and then the top plate lifts the internal injection molded parts of the cavity, making it convenient to demold the injection molded parts.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0018] The utility model provides a water tank for storing coolant, and provides a liquid pump for pumping out the coolant in the water tank and introducing it into the interior of the cooling tank through the liquid inlet pipe, so that the coolant flows through the cooling tank and flows back to the interior of the water tank through the liquid outlet pipe. When the coolant flows through the interior of the cooling tank, the coolant cools the injection molded part inside the cavity, so that the injection molded part is quickly formed, thereby avoiding the side of the injection molded part from sticking to the inner wall of the cavity, which makes it difficult to demold the injection molded part, and at the same time achieves the purpose of recycling the coolant. By providing a boron nitride high temperature resistant coating to reduce the friction coefficient between the injection molded part and the inner wall of the cavity, the injection molded part is conveniently demolded. The heat sink is provided to extract the heat of the coolant in the water tank and dissipate it to the inside of the heat sink, thereby dissipating the heat and cooling the coolant, thereby improving the cooling effect of the coolant on the injection molded parts. A heat dissipation motor is provided to discharge the air inside the heat sink, and at the same time, external air enters the heat sink through the air inlet, so that airflow is formed inside the heat sink, thereby improving the heat dissipation effect of the heat sink. At the same time, the problem that the existing injection molding device has poor cooling efficiency for the injection molded parts when injection molding high-temperature materials, resulting in slow molding of the injection molded parts, and easily causing the sides of the injection molded parts to stick to the cavity, resulting in affected demolding of the injection molded parts is solved. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 This is a schematic diagram of the upper die and lower die structure of the utility model;

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

[0022] Figure 4 This is a schematic diagram of the internal structure of the heat dissipation box of the utility model;

[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the lower die of the utility model from top view;

[0024] Figure 6 This is a schematic diagram of the internal structure of the lower mold of the utility model;

[0025] Figure 7 It is a schematic diagram of the top plate structure of the utility model.

[0026] In the figure: 1. lower mold; 2. upper mold; 3. water tank; 4. liquid pump; 5. liquid inlet pipe; 6. cavity; 7. cooling trough; 8. liquid outlet pipe; 9. filter box; 10. heat sink; 11. air inlet; 12. heat sink; 13. heat dissipation motor; 14. guide plate; 15. boron nitride high temperature resistant coating; 16. storage slot; 17. fixing plate; 18. electric push rod; 19. top plate; 20. positioning protrusion; 21. positioning groove. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-7 A high temperature material injection molding device comprises a lower mold 1, an upper mold 2 is arranged on the top of the lower mold 1, a water tank 3 is fixedly installed on the front of the lower mold 1, a liquid pump 4 is fixedly installed on the right side of the water tank 3, and an output end of the liquid pump 4 is connected with a liquid inlet pipe 5, a cavity 6 is opened on the top of the lower mold 1, a cooling groove 7 is opened inside the lower mold 1 and around the cavity 6, both sides of the cooling groove 7 are connected with through grooves, the other side of the liquid inlet pipe 5 is connected with the through groove, the through groove on the left side of the cooling groove 7 is connected with a liquid outlet pipe 8, and the other side of the liquid outlet pipe 8 One side is connected with the bottom of the left side of the water tank 3, a heat sink 10 is fixedly installed on the front of the water tank 3, evenly distributed heat sinks 12 are provided on the front of the water tank 3 and inside the heat sink 10, air inlets 11 are provided on the top and bottom of the heat sink 10, two heat dissipation motors 13 are fixedly installed inside the heat sink 10 and in front of the heat sink 12, a drain pipe is connected to the bottom of the right side of the water tank 3, a sealing cover is arranged on the top of the water tank 3, and the sides of the inner cavity of the cavity 6 are coated with a boron nitride high temperature resistant coating 15.

[0029] Specifically, evenly distributed guide plates 14 are disposed inside the heat dissipation box 10 , and the guide plates 14 are located in front of the heat dissipation motor 13 .

[0030] The guide plate 14 is used to guide the air blown out by the heat dissipation motor 13 and prevent dust from falling into the interior of the heat dissipation box 10 .

[0031] Specifically, the surface of the liquid outlet pipe 8 is connected to a filter box 9 , and a filter screen is arranged inside the filter box 9 .

[0032] The filter box 9 and the filter screen inside cooperate with each other to filter the coolant flowing through the outlet pipe 8 to prevent impurities in the coolant from entering the water tank 3 again, thereby avoiding affecting the cooling effect of the coolant on the injection molded parts inside the cavity 6.

[0033] Specifically, positioning protrusions 20 are fixedly installed on both sides of the bottom of the upper mold 2, and positioning grooves 21 are opened on both sides of the top of the lower mold 1.

[0034] The positioning protrusion 20 and the positioning groove 21 cooperate with each other to improve the positioning of the lower mold 1 and the upper mold 2 when the mold is closed, and prevent the lower mold 1 and the upper mold 2 from deviating when the mold is closed.

[0035] Specifically, a receiving groove 16 is provided at the bottom of the inner cavity of the mold cavity 6 , and a top plate 19 is provided inside the receiving groove 16 .

[0036] The receiving groove 16 is used to receive the top plate 19 to prevent the top plate 19 from interfering with the shape of the injection molded part.

[0037] Specifically, a groove is formed at the bottom of the lower mold 1 , and a fixing plate 17 is fixedly installed inside the groove. An electric push rod 18 is fixedly installed on the top of the fixing plate 17 , and the output end of the electric push rod 18 is fixedly connected to the bottom of the top plate 19 .

[0038] The fixing plate 17 is used to install and fix the electric push rod 18, improve the stability of the electric push rod 18, and drive the top plate 19 to move upward under the action of the electric push rod 18, so that the top plate 19 lifts the internal injection molded parts of the cavity 6 to facilitate demolding of the injection molded parts.

[0039] When in use, a sufficient amount of coolant is introduced into the water tank 3. After the injection molding is completed, the injection molded part inside the cavity 6 needs to be quickly cooled. At the same time, the liquid pump 4 and the heat dissipation motor 13 are started. Under the action of the liquid pump 4, the coolant inside the water tank 3 is pumped out and introduced into the cooling tank 7 through the liquid inlet pipe 5, so that the coolant flows through the cooling tank 7 and then flows back to the water tank 3 through the liquid outlet pipe 8. When the coolant flows through the cooling tank 7, the coolant will quickly cool the injection molded part inside the cavity 6, so that the injection molded part is quickly formed. The heat dissipation motor 13 discharges the air inside the heat dissipation box 10 to dissipate the heat of the heat sink 12. After the lower mold 1 and the upper mold 2 are opened, the electric push rod 18 is started. Under the action of the electric push rod 18, the top plate 19 is driven to move upward, and then the top plate 19 lifts the injection molded part inside the cavity 6 to demold the injection molded part.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high temperature material injection molding device, comprising a lower mold (1), characterized in that: An upper mold (2) is arranged on the top of the lower mold (1), a water tank (3) is fixedly installed on the front of the lower mold (1), a liquid pump (4) is fixedly installed on the right side of the water tank (3), and the output end of the liquid pump (4) is connected to a liquid inlet pipe (5), a cavity (6) is provided on the top of the lower mold (1), a cooling groove (7) is provided inside the lower mold (1) and around the cavity (6), both sides of the cooling groove (7) are connected to through grooves, the other side of the liquid inlet pipe (5) is connected to the through groove, the through groove on the left side of the cooling groove (7) is connected to a liquid outlet pipe (8), and the other side of the liquid outlet pipe (8) is connected to the water tank (3). The bottom of the left side of the water tank (3) is connected, a heat sink (10) is fixedly installed on the front of the water tank (3), evenly distributed heat sinks (12) are provided on the front of the water tank (3) and inside the heat sink (10), air inlets (11) are provided on the top and bottom of the heat sink (10), two heat dissipation motors (13) are fixedly installed inside the heat sink (10) and on the front of the heat sink (12), the bottom of the right side of the water tank (3) is connected to a drain pipe, a sealing cover is provided on the top of the water tank (3), and the side of the inner cavity of the cavity (6) is coated with a boron nitride high temperature resistant coating (15).

2. A high temperature material injection molding device according to claim 1, characterized in that: Evenly distributed guide plates (14) are arranged inside the heat dissipation box (10), and the guide plates (14) are located on the front side of the heat dissipation motor (13).

3. A high temperature material injection molding device according to claim 1, characterized in that: The surface of the liquid outlet pipe (8) is connected to a filter box (9), and a filter screen is arranged inside the filter box (9).

4. A high temperature material injection molding device according to claim 1, characterized in that: Positioning protrusions (20) are fixedly mounted on both sides of the bottom of the upper die (2), and positioning grooves (21) are provided on both sides of the top of the lower die (1).

5. The high temperature material injection molding device according to claim 1, characterized in that: A receiving groove (16) is provided at the bottom of the inner cavity of the mold cavity (6), and a top plate (19) is provided inside the receiving groove (16).

6. The high temperature material injection molding device according to claim 1, characterized in that: A groove is provided at the bottom of the lower mold (1), and a fixing plate (17) is fixedly installed inside the groove. An electric push rod (18) is fixedly installed on the top of the fixing plate (17), and the output end of the electric push rod (18) is fixedly connected to the bottom of the top plate (19).

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