Cast iron alloy glass mold with pre-cooling structure

Abstract

The utility model relates to glass mould processing equipment technical field discloses a cast iron alloy glass mould with precooling structure, and the mould includes bottom plate, fixed bottom die and sliding side die, is fixed with cooling assembly on the bottom plate, is equipped with auxiliary assembly in the side die, and cooling assembly contains cooling box, submersible pump, copper fin and fan, and auxiliary assembly includes the cooling tank of setting up in the side die and the stainless steel water tank of interference fit in the tank, and the water tank outer wall and the tank inner wall fill the heat -conducting silicone grease, and the tank inner wall is welded with a plurality of staggered arrangement baffles, and the submersible pump is connected the water tank through high temperature resistant hose, and the water tank outlet end connects the fin, and the fin backflow forms closed loop to the cooling box, the utility model discloses through the stainless steel water tank isolation cast iron and cooling water, completely solve internal rust corrosion problem, and utilize the baffling plate manufacturing turbulence, cooperate with air cooling heat dissipation, improve the heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of glass mold processing equipment, and in particular to a cast iron alloy glass mold with a pre-cooling structure. Background Technology

[0002] In the die casting process of glass products, the heat dissipation performance of the mold directly determines the molding quality and production efficiency of the product. Cast iron alloys are often used as the base material for glass molds due to their good casting performance, wear resistance and low cost.

[0003] However, in existing mold cooling technologies, in order to pursue cooling speed, cooling water is usually directly drilled into the inside of the cast iron mold for circulation and heat dissipation. This direct contact cooling method has serious drawbacks. Since cast iron itself is not corrosion-resistant, it is very easy to rust when in contact with flowing water for a long time. The rust will not only gradually block the cooling channels, causing the water flow to decrease or even stop, but also cause perforation and leakage inside the mold, affecting the service life of the mold. In addition, the existing straight-through water channel design makes the cooling water often flow in a laminar state in the pipe, with a thick fluid boundary layer and low heat exchange efficiency with the mold matrix, which is difficult to meet the demand for rapid cooling in high-speed production.

[0004] Therefore, this utility model proposes a cast iron alloy glass mold with a pre-cooling structure to overcome the shortcomings of the prior art. Utility Model Content

[0005] In view of the problems in the prior art, direct water cooling of cast iron glass molds easily leads to rust and blockage of internal water channels, resulting in short service life, and the traditional direct water channel causes low fluid heat exchange efficiency and unsatisfactory cooling effect, this utility model aims to provide a cast iron alloy glass mold with a pre-cooling structure that has been improved in structure and can effectively solve the above problems.

[0006] This utility model provides a cast iron alloy glass mold with a pre-cooling structure, including: a base plate, a bottom mold fixed to the upper surface of the base plate, and two side molds slidably connected to the upper surface of the base plate. A cooling component is fixedly installed on the upper surface of the base plate, and auxiliary components are provided inside the side molds.

[0007] The cooling assembly serves as an external circulating power source and heat dissipation center, and includes a cooling box fixed to the base plate, a submersible pump fixed to the bottom wall of the cooling box, fins fixed to the top of the cooling box, and a fan fixed to the inner wall of the cooling box. The auxiliary assembly serves as a corrosion-resistant heat exchange unit inside the mold, and includes a cooling groove opened in the side mold and a stainless steel water tank interference fit inside the cooling groove. Several baffles are fixed to the inner wall of the stainless steel water tank.

[0008] Furthermore, the output end of the submersible pump is connected to the stainless steel water tank via a cold water pipe, and the top of the stainless steel water tank is connected to the fins via a hot water pipe. The air outlet of the fan is directly opposite the fins. Through the cooperation of the above components, a closed-loop fluid circulation cooling circuit is formed.

[0009] Preferably, the fins are not independently arranged, but are connected in series to form a long water channel. The bottom of the fin located in the middle position is provided with a drip hole. The vertical projection of the drip hole is located in the internal space of the cooling box. The top of the cooling box is provided with a through hole for water to flow back, thereby realizing the natural gravity return circulation of cooling water.

[0010] Preferably, a plurality of the baffles are arranged alternately along the water flow direction in the stainless steel water tank, with one end of the baffle fixed to the inner wall of the stainless steel water tank and the other end extending to the center line of the stainless steel water tank, forcing the water flow to generate violent disturbance.

[0011] Preferably, both the cold water pipe and the hot water pipe are high-temperature resistant corrugated flexible hoses. The lengths of the cold water pipe and the hot water pipe are greater than the distance when the side mold moves to its maximum stroke, ensuring that the pipeline has sufficient flexibility and expansion allowance when the side mold is in the opening and closing motion, preventing the pipeline from being pulled apart or the joint from becoming loose.

[0012] Preferably, a thermally conductive silicone grease layer is filled between the outer wall of the stainless steel water tank and the inner wall of the cooling tank. The external dimensions of the stainless steel water tank are adapted to the internal dimensions of the cooling tank. By filling with a thermally conductive medium and making close mechanical contact, the microscopic air gap thermal resistance between the interface of the dissimilar materials is eliminated.

[0013] Preferably, the submersible pump is fixed to the inner bottom wall of the cooling tank by stainless steel bolts, and the water inlet of the submersible pump is equipped with a filter screen to intercept impurities in the circulating water and prevent blockage of the pump body or the small end pipes.

[0014] Preferably, the fan is fixedly installed on the upper side of the inner wall of the cooling box by a bracket, and the cooling box is provided with a louvered air inlet at the position corresponding to the air inlet of the fan. This structure not only ensures sufficient air intake, but also effectively prevents large external particles from falling directly into the box.

[0015] Preferably, the fins are hollow thin copper sheets, and the outer surface of the fins is provided with a number of heat dissipation protrusions. The high thermal conductivity of copper and the increased surface area of ​​the protrusions improve the efficiency of heat exchange with air.

[0016] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art that direct water cooling of cast iron molds easily leads to rust and corrosion of internal water channels, resulting in pipe blockage or perforation and leakage, by tightly embedding a stainless steel water tank in the cooling groove inside the cast iron side mold. It achieves the technical effect of completely isolating the cooling water from the cast iron substrate while retaining the advantages of low cost and good molding performance of cast iron molds, effectively preventing corrosion and extending the service life of the mold.

[0017] 2. This utility model solves the problem that in existing cooling structures, water flow in straight pipes easily forms laminar flow and the thick fluid boundary layer leads to a low heat transfer coefficient by setting baffles arranged in a staggered manner along the water flow direction inside the stainless steel water tank. It achieves the technical effect of forcing the cooling water flow path to be S-shaped and forming violent turbulence, effectively destroying the fluid boundary layer, improving the convective heat transfer efficiency between the cooling water and the mold, and achieving rapid cooling.

[0018] 3. This utility model solves the problem of microscopic air gaps and large contact thermal resistance that seriously affect heat dissipation caused by processing errors in the existing embedded combination structure by filling the outer wall of the stainless steel water tank and the inner wall of the cast iron cooling tank with a thermally conductive silicone grease layer and using an interference fit process. It achieves the technical effect of establishing a continuous and efficient heat conduction medium bridge, eliminating assembly gap thermal resistance, and ensuring that the heat of the molten glass can be quickly transferred to the water system through the interface. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a cast iron alloy glass mold with a pre-cooling structure proposed in this utility model. Figure 2 This is a schematic diagram of the fan section of a cast iron alloy glass mold with a pre-cooling structure proposed in this utility model. Figure 3 This is a schematic diagram of the finned portion of a cast iron alloy glass mold with a pre-cooling structure proposed in this utility model. Figure 4 This is a schematic diagram of the side mold portion of a cast iron alloy glass mold with a pre-cooling structure proposed in this utility model. Figure 5 This is a schematic diagram of the baffle plate section of a cast iron alloy glass mold with a pre-cooling structure proposed in this utility model.

[0020] Legend: 1. Base plate; 2. Side mold; 3. Cooling components; 301. Cold water pipe; 302. Hot water pipe; 303. Fins; 304. Fan; 305. Cooling box; 306. Submersible pump; 307. Drip hole; 4. Bottom mold; 5. Auxiliary components; 501. Cooling tank; 502. Stainless steel water tank; 503. Baffle plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 5 This utility model provides a cast iron alloy glass mold with a pre-cooling structure, which aims to solve the structural defects of the prior art, such as the easy corrosion and rust caused by direct water cooling of cast iron molds, and the low heat exchange efficiency caused by the single flow path of cooling water inside the mold.

[0023] like Figure 1 , Figure 2 and Figure 4 As shown, the cast iron alloy glass mold with pre-cooling structure includes a base plate 1, a bottom mold 4 fixedly installed on the upper surface of the base plate 1, and two side molds 2 slidably connected to the upper surface of the base plate 1 and located on both sides of the bottom mold 4. The base plate 1 serves as the mounting base for the entire device, and its material has sufficient strength to support the weight of all components above it. The bottom mold 4 is fixed in position, and the two side molds 2 can slide relative to or away from each other along the surface of the base plate 1, thereby realizing the operation of mold closing and die casting and mold opening and part removal for glass products placed on the bottom mold 4. A cooling component 3 for providing circulating power and secondary heat dissipation is also fixedly installed on the upper surface of the base plate 1, and auxiliary components 5 for preventing corrosion and enhancing heat exchange effect are provided inside the side molds 2.

[0024] like Figure 1 and Figure 2 As shown, the cooling assembly 3 serves as the carrier of the external circulation system. It includes a cooling box 305 fixed to the upper surface of the base plate 1 by bolts. The cooling box 305 is a hollow box structure used to store the cooling medium. A submersible pump 306 is fixedly installed on the inner bottom wall of the cooling box 305 by stainless steel bolts. The water inlet of the submersible pump 306 is equipped with a filter screen and is located below the liquid surface of the water accumulated in the cooling box 305 to ensure continuous extraction of the cooling medium. A fin 303 is fixedly installed on the top of the cooling box 305. The fin 303 is a hollow thin copper sheet structure, which not only serves as a channel for hot water return but also as a heat sink for heat exchange with the air. A fan 304 is fixedly installed on the upper side of the inner wall of the cooling box 305 by a bracket. The air outlet of the fan 304 faces the fin 303 to force convection and accelerate the heat dissipation of the fin 303. A louvered air inlet is provided in the cooling box 305 at the position corresponding to the air inlet of the fan 304 to ensure sufficient air intake.

[0025] like Figure 4 and Figure 5 As shown, auxiliary component 5 serves as a heat exchange structure inside the mold. It includes a cooling groove 501 directly formed in the cast iron material inside the side mold 2. A stainless steel water tank 502 is installed inside the cooling groove 501. The external dimensions of the stainless steel water tank 502 are adapted to the internal dimensions of the cooling groove 501. The outer wall of the stainless steel water tank 502 and the inner wall of the cooling groove 501 are tightly fitted together, and a thermally conductive silicone grease layer is filled between them. This thermally conductive silicone grease layer can fully fill the microscopic gaps between the cast iron cooling groove 501 and the stainless steel water tank, establish a continuous heat conduction medium bridge, eliminate the thermal resistance generated by the assembly gap, and ensure that the heat absorbed by the side mold 2 can be efficiently conducted to the stainless steel water tank 502. At the same time, the stainless steel water tank 502 physically isolates the cooling water from the cast iron body of the side mold 2.

[0026] To optimize fluid heat exchange efficiency, the stainless steel water tank 502 has a specific flow channel design. Specifically, several baffles 503 are welded and fixed to the inner wall of the stainless steel water tank 502. These baffles 503 are arranged in a staggered pattern along the overall flow direction of the water inside the stainless steel water tank 502. One end of each baffle 503 is fixedly connected to the inner side wall of the stainless steel water tank 502, and the other end extends to or slightly beyond the center line of the inner cavity of the stainless steel water tank 502. This staggered structural layout divides the originally straight inner cavity into continuous S-shaped flow channels. When cooling water flows through this channel, the baffles 503 force the water flow to constantly change direction and generate violent disturbances, thereby effectively destroying the fluid boundary layer and changing the water flow from a laminar state to a violent turbulent state, thus improving the convective heat transfer coefficient between the cooling water and the inner wall of the stainless steel water tank 502.

[0027] Meanwhile, in order to connect the stainless steel water tank 502 to the circulation system and adapt to the opening and closing movement of the side mold 2, a cold water pipe 301 is connected between the output end of the submersible pump 306 and the lower outer wall of the stainless steel water tank 502, while a hot water pipe 302 is connected between the upper surface of the stainless steel water tank 502 and the fins 303. Considering that the side mold 2 needs to slide back and forth on the base plate 1 during operation to achieve mold opening and closing, both the cold water pipe 301 and the hot water pipe 302 are made of high-temperature resistant corrugated hose. This material and structure can not only withstand the flow of high-temperature hot water, but also have good flexibility and fatigue resistance. The reserved length of the cold water pipe 301 and the hot water pipe 302 is set to be greater than the straight distance when the side mold 2 moves to the maximum stroke position, ensuring that the pipeline is still in a relaxed or non-tight state when the side mold 2 makes the maximum displacement, avoiding loosening of the connection point or pipe breakage due to excessive stretching of the pipeline.

[0028] For the heat dissipation and recirculation structure at the end of cooling component 3, please refer to... Figure 2 and Figure 3 The fins 303 are not independent entities, but are connected in series through pipes to form a long heat dissipation channel. The bottom of the fin 303 located in the middle of the series structure has a drip hole 307. The vertical projection area of ​​the drip hole 307 falls completely into the internal space of the cooling box 305 below. The top of the cooling box 305 has a through hole for water return corresponding to the position of the drip hole 307. When the hot water flowing out from the hot water pipe 302 passes through the hollow inner cavity of the fin 303, the heat is carried away by the airflow generated by the external fan 304. The cooled water flow eventually gathers in the middle fin 303 and falls back into the cooling box 305 in the form of droplets or thin streams under the action of gravity through the drip hole 307, completing the circulation.

[0029] Based on the above embodiments, the present invention may further include the following preferred technical solutions: As a preferred embodiment, in order to optimize the airflow organization inside the cooling box 305 and prevent foreign objects from entering, the fan 304 is not directly mounted against the wall, but is fixedly mounted on the upper side of the inner wall of the cooling box 305 by an L-shaped bracket or a hanging bracket. This mounting position allows the air outlet of the fan 304 to be horizontal or slightly tilted to face the windward side of the fins 303. At the same time, the side wall of the cooling box 305 has a louvered air inlet at the position corresponding to the air inlet of the fan 304. The louver blade tilt angle design can ensure sufficient air intake to maintain the heat dissipation air pressure, and effectively prevent large particles of dust or splashes from directly entering the cooling box 305 and damaging the blades.

[0030] As a further preferred embodiment, in order to ensure the stability of the circulating power and the cleanliness of the pipeline, the submersible pump 306 is rigidly fixed to the inner bottom wall of the cooling tank 305 by stainless steel bolts. This rigid connection method can effectively resist the vibration generated during pump operation and prevent displacement or loosening of pipeline joints due to long-term vibration. At the same time, a high-density filter screen is snapped or threaded at the water inlet of the submersible pump 306. This filter screen is used to intercept scale fragments or metal impurities that may be mixed in the cooling water and prevent small particles from entering the subsequent fins 303 and clogging their narrow hollow flow channels.

[0031] In addition, in order to improve the heat exchange performance of the terminal heat dissipation component, the fin 303 is made of copper material with high thermal conductivity, and the outer surface of the fin 303 is not a smooth plane, but is stamped or cast with several heat dissipation protrusions. These heat dissipation protrusions significantly increase the contact surface area between the fin 303 and the cold air, so that the high-speed airflow blown out by the fan 304 can carry away more heat. Combined with the turbulence effect created by the baffle 503 inside the mold, efficient heat exchange is achieved both inside and outside.

[0032] The working principle of this utility model of a cast iron alloy glass mold with a pre-cooling structure is as follows: When glass products need to be processed, the glass product to be processed is first placed in the bottom mold 4 position on the base plate 1. Then, the two side molds 2 are pushed to slide on the upper surface of the base plate 1 until they close, so as to cooperate with the bottom mold 4 to cover the glass product in the mold cavity for die casting.

[0033] During mold operation or pre-cooling stage, the submersible pump 306 located at the bottom of the cooling tank 305 is turned on. The submersible pump 306 draws out the low-temperature water in the cooling tank 305 and injects it into the auxiliary component 5 inside the side mold 2 through the cold water pipe 301. After the low-temperature water enters the stainless steel water tank 502, it is restricted by the obstruction of the staggered baffles 503 inside. The water flow cannot pass directly, but is forced to flow in an S-shaped meandering path defined by the baffles 503 and form violent turbulence. This turbulent state greatly destroys the boundary layer of the fluid, so that the water flow can absorb the heat conducted to the wall of the stainless steel water tank 502 through the thermally conductive silicone grease layer more efficiently, thereby achieving efficient cooling while protecting the cast iron side mold 2 from corrosion.

[0034] After absorbing heat and heating up, the hot water flows out through the hot water pipe 302 at the top of the stainless steel water tank 502 and enters the fins 303 of the cooling assembly 3. At the same time, the fan 304 inside the cooling box 305 is turned on. The strong airflow generated by the fan 304 passes through the louvered air inlet and blows directly onto the fins 303. The large heat dissipation area of ​​the fins 303 and the heat dissipation protrusions on its surface quickly carry away the heat from the hot water and dissipate it into the air. The water flow after being cooled by air flows to the fins 303 in the middle position and finally drips back into the cooling box 305 through the drip hole 307 for the submersible pump 306 to draw it out again, realizing the recycling of water resources and continuous heat dissipation.

[0035] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A cast iron alloy glass mold with a pre-cooling structure, comprising a base plate (1), a bottom mold (4) fixed to the upper surface of the base plate (1), and two side molds (2) slidably connected to the upper surface of the base plate (1). Its features are: A cooling assembly (3) is fixedly installed on the upper surface of the base plate (1), and an auxiliary assembly (5) is provided inside the side mold (2). The cooling assembly (3) includes a cooling box (305) fixed to the base plate (1), a submersible pump (306) fixed to the bottom wall of the cooling box (305), fins (303) fixed to the top of the cooling box (305), and a fan (304) fixed to the inner wall of the cooling box (305). The auxiliary component (5) includes a cooling groove (501) opened in the side mold (2) and a stainless steel water tank (502) that is interference-fitted inside the cooling groove (501). The inner wall of the stainless steel water tank (502) is fixed with several baffles (503). The output end of the submersible pump (306) is connected to the stainless steel water tank (502) through the cold water pipe (301). The top of the stainless steel water tank (502) is connected to the fins (303) through the hot water pipe (302). The air outlet of the fan (304) is directly facing the fins (303).

2. The cast iron alloy glass mold with a pre-cooling structure according to claim 1, characterized in that, A number of the fins (303) are connected in series. The bottom of the fin (303) located in the middle position is provided with a drip hole (307). The drip hole (307) is vertically projected into the internal space of the cooling box (305). The top of the cooling box (305) is provided with a through hole for water to flow back.

3. A cast iron alloy glass mold with a pre-cooling structure according to claim 1, characterized in that, Several of the baffles (503) are arranged alternately along the water flow direction in the stainless steel water tank (502). One end of the baffle (503) is fixed to the inner wall of the stainless steel water tank (502), and the other end extends to the center line of the stainless steel water tank (502).

4. A cast iron alloy glass mold with a pre-cooling structure according to claim 1, characterized in that, Both the cold water pipe (301) and the hot water pipe (302) are high-temperature resistant corrugated hoses. The lengths of the cold water pipe (301) and the hot water pipe (302) are greater than the distance when the side mold (2) moves to its maximum stroke.

5. A cast iron alloy glass mold with a pre-cooling structure according to claim 1, characterized in that, A thermally conductive silicone grease layer is filled between the outer wall of the stainless steel water tank (502) and the inner wall of the cooling tank (501), and the external dimensions of the stainless steel water tank (502) are adapted to the internal dimensions of the cooling tank (501).

6. A cast iron alloy glass mold with a pre-cooling structure according to claim 1, characterized in that, The submersible pump (306) is fixed to the inner bottom wall of the cooling tank (305) by stainless steel bolts, and a filter screen is provided at the water inlet of the submersible pump (306).

7. A cast iron alloy glass mold with a pre-cooling structure according to claim 1, characterized in that, The fan (304) is fixedly installed on the upper side of the inner wall of the cooling box (305) by a bracket, and the cooling box (305) has a louvered air inlet at the position corresponding to the air inlet of the fan (304).

8. A cast iron alloy glass mold with a pre-cooling structure according to claim 1, characterized in that, The fin (303) is a hollow thin sheet structure made of copper, and the outer surface of the fin (303) is provided with several heat dissipation protrusions.

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