A mold for accelerated prototyping

Abstract

This invention discloses a mold for accelerated molding, comprising a lower mold and an upper mold mounted on the lower mold. The housing has a mounting cavity filled with coolant and has two openings. An elastic block filled with a low-boiling-point evaporating liquid is located within the mounting cavity. A fixed plate is vertically fixed within the mounting cavity, and a moving mechanism is mounted on the fixed plate. A rotating mechanism cooperating with the moving mechanism is also located within the mounting cavity. Under the action of the cold coolant, the low-boiling-point evaporating liquid cools and liquefies, causing the sliding rod to return to its initial position. This allows for continuous flow and replacement of the coolant, effectively cooling the molten liquid and improving heat dissipation. Consequently, the molten liquid is molded faster, the molding time is shorter, and the number of tools produced in the same amount of time is increased, thus improving tool production efficiency.

Description

Technical Field

[0001] This invention relates to the field of molding die technology, and more particularly to a die for accelerating molding. Background Technology

[0002] A mold is a set of molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting, forging, smelting, and stamping. In short, a mold is a tool used to shape objects. This tool is composed of various parts, and different molds are composed of different parts. It mainly achieves the shaping of objects by changing the physical state of the material being molded.

[0003] Currently, tool manufacturing typically involves pouring molten liquid into a mold, where it cools and solidifies. However, current molds rely solely on simple heat transfer between the mold and the surrounding environment for heat dissipation, resulting in poor heat dissipation. This leads to slow and time-consuming solidification of the molten liquid, resulting in a smaller number of tools produced in the same amount of time and thus low tool production efficiency. Summary of the Invention

[0004] The purpose of this invention is to address the following shortcomings in the prior art: current molds rely solely on simple heat transfer between the mold and the surrounding environment for heat dissipation, resulting in poor heat dissipation and slow molding of molten liquid, leading to a long molding time and a small number of tools produced in the same amount of time, resulting in low tool production efficiency. Therefore, this invention proposes a mold for accelerating molding.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A mold for accelerated molding includes a lower mold and an upper mold disposed on the lower mold. The lower mold has a mounting cavity filled with coolant and has two openings. An elastic block filled with a low-boiling-point evaporating liquid is disposed within the mounting cavity. A fixing plate is vertically fixedly connected to the mounting cavity, and a moving mechanism is disposed on the fixing plate. A rotating mechanism cooperating with the moving mechanism is disposed within the mounting cavity. A base plate is laterally slidably connected to the lower mold. An air bladder is fixedly connected to the lower mold, and a fixing mechanism is disposed on the air bladder.

[0007] Preferably, the moving mechanism includes a plurality of sliding rods slidably connected to the fixed plate, each of the sliding rods being fixedly connected to a sealing block for restricting the flow of coolant, and a straight spring being arranged around the sliding rod, with both ends of the straight spring being fixedly connected to the fixed plate and the sliding rod, respectively.

[0008] Preferably, a limiting rod is fixedly connected to the sliding rod, a limiting block is fixedly connected to the fixed plate, a rotating block is slidably connected to the limiting block, and the rotating block is provided with an annular groove for the limiting block to slide.

[0009] Preferably, a protrusion is fixedly connected to the rotating block, and a threaded groove is provided on the sliding rod. The protrusion and the groove are slidably connected, and a first magnet is fixedly connected to one end of the rotating block.

[0010] Preferably, the rotating mechanism includes a plurality of rotating rods rotatably connected to the mounting cavity, each rotating rod having a plurality of heat sinks fixedly connected to it, and each heat sink having a second magnet having the same magnetic poles as the first magnet facing the same direction.

[0011] Preferably, the fixing mechanism includes a compression chamber disposed on the lower mold, a pressure valve fixedly connected to the compression chamber, an air outlet and an air inlet on the air bladder, and a one-way valve fixedly connected to both the air outlet and the air inlet, and the compression chamber and the air outlet are fixedly connected.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. Under the action of heat transfer, the low-boiling-point evaporating liquid filled in the elastic block on one side of the fixed plate will change from liquid to gas. The volume of the gaseous low-boiling-point evaporating liquid increases, causing the elastic block to expand. The elastic block will then squeeze the coolant in the mounting cavity, and the sliding rod will slide relative to the fixed plate. The coolant with a lower temperature on the fixed plate side will flow into the coolant with a higher temperature. The coolant with a higher temperature will float up and flow into the coolant with a colder temperature to dissipate heat. At the same time, under the action of the coolant with a colder temperature, the low-boiling-point evaporating liquid will cool and turn into liquid. The sliding rod will return to its initial position, and the coolant with a colder temperature will flow into the mounting cavity through the opening below. This continuous flow and replacement of the coolant with colder temperature will cool the molten liquid. The heat dissipation effect is good, which makes the molten liquid form faster and the forming time shorter. This allows for the production of more tools in the same amount of time, thus improving the production efficiency of the tools.

[0014] 2. As the sliding rod moves, the rotating block, restricted by the limiting block, will not move horizontally. As the sliding rod moves, the protrusion fixedly connected to the rotating block will slide in the groove on the sliding rod, causing the rotating block to rotate. Under the restriction of the limiting rod, the first magnet fixedly connected to the rotating block is exactly obliquely opposite to the second magnet on the heat sink. Under the action of repulsive force, the heat sink will continuously rotate, thereby continuously dissipating heat from the molten liquid and accelerating the molding speed of the molten liquid.

[0015] 3. When hot coolant flows into cold coolant in the mounting cavity, it compresses the airbag on the coolant side. The gas in the airbag flows into the compression chamber through the air outlet. When the coolant returns to the mounting cavity, the airbag is under negative pressure. This process repeats, and the gas in the lower mold flows into the compression chamber through the airbag. At the same time, the one-way valves on the airbag's air outlet and air inlet restrict the gas to flow only into the compression chamber through the airbag. This ensures good venting of the lower mold and prevents the formation of bubbles in the molten liquid during molding, thereby reducing the defect rate.

[0016] 4. As the gas inside the mold continuously flows through the air bladder into the compression chamber for compression, once the gas in the compression chamber is compressed to a certain degree and the molten liquid has solidified, the lower mold and the upper mold are separated. When the pressure in the compression chamber reaches the pressure valve threshold, the gas will be discharged from the compression chamber, causing the base plate to move upward and the forming tool on the base plate to move upward as well. This makes it easier to remove the forming tool. Afterward, the gas can be discharged by opening the through hole on the base plate. Attached Figure Description

[0017] Figure 1 This is a front structural diagram of a mold for accelerated molding proposed in this invention;

[0018] Figure 2 This is a schematic diagram of the front structure of the rotating block;

[0019] Figure 3 for Figure 1 A magnified schematic diagram of part A in the diagram.

[0020] In the diagram: 1 Lower mold, 2 One-way valve, 3 Airbag, 4 Limiting rod, 5 Mounting cavity, 6 Compression cavity, 7 Pressure valve, 8 Base plate, 9 Fixing plate, 10 Elastic block, 11 Opening, 12 Sliding rod, 13 Limiting block, 14 Rotating block, 15 Heat sink, 16 Rotating rod, 17 First magnet, 18 Straight spring, 19 Slide groove, 20 Protrusion, 21 Second magnet. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0022] Reference Figure 1-3A mold for accelerated molding includes a lower mold 1 and an upper mold mounted on the lower mold 1. The lower mold 1 has a mounting cavity 5 filled with coolant and has two openings 11. An elastic block 10 is provided inside the mounting cavity 5 and is filled with a low-boiling-point evaporating liquid. A fixing plate 9 is vertically fixedly connected inside the mounting cavity 5, and a moving mechanism is provided on the fixing plate 9. A rotating mechanism that cooperates with the moving mechanism is provided inside the mounting cavity 5. A base plate 8 is laterally slidably connected inside the lower mold 1. An airbag 3 is fixedly connected to the lower mold 1 and has a... The fixed mechanism and the moving mechanism include multiple sliding rods 12 that are slidably connected to the fixed plate 9. Each sliding rod 12 is fixedly connected to a sealing block for restricting the flow of coolant. A straight spring 18 is arranged around the sliding rod 12. The two ends of the straight spring 18 are fixedly connected to the fixed plate 9 and the sliding rod 12, respectively. Under the squeezing action of the coolant, the sealing block fixedly connected to the sliding rod 12 will separate from the fixed plate 9. At the same time, the straight spring 18 will also deform as it moves, and the coolant on one side of the fixed plate 9 will flow out through the gap between the sliding rod 12 and the fixed plate 9.

[0023] A limiting rod 4 is fixedly connected to the sliding rod 12, and a limiting block 13 is fixedly connected to the fixing plate 9. A rotating block 14 is slidably connected to the limiting block 13. The rotating block 14 has an annular groove for the sliding of the limiting block 13. The limiting block 13 fixedly connected to the fixing plate 9 slides in the annular groove of the rotating block 14. The limiting block 13 restricts the rotating block 14 from moving horizontally during the movement of the sliding rod 12. A protrusion 20 is fixedly connected to the rotating block 14, and a threaded groove 19 is provided on the sliding rod 12. The protrusion 20 and the groove 19 are slidably connected. One end of the rotating block 14 is fixedly connected to a first magnet 17. When the sliding rod 12 moves in the horizontal direction, the protrusion 20 fixedly connected to the rotating block 14 will slide in the groove 19 on the sliding rod 12. Since the groove 19 is set as a spiral, the rotating block 14 will rotate at the same time as the sliding rod 12 moves. The rotating mechanism includes multiple rotating rods 16 rotatably connected to the mounting cavity 5. Multiple heat sinks 15 are fixedly connected to each rotating rod 16. A second magnet 21 with the same magnetic pole as the first magnet 17 is fixedly connected to each heat sink 15.

[0024] Under the restriction of the limiting rod 4, during the rotation of the rotating block 14, the first magnet 17 on the rotating block 14 and the second magnet 21 on the heat sink 15 are exactly obliquely opposite each other. Since the magnetic poles of the first magnet 17 and the second magnet 21 are the same on their facing surfaces, there will be a mutual repulsive force between the first magnet 17 and the second magnet 21. Under the action of the force, the heat sink 15 will rotate continuously, so that the heat sink 15 can better dissipate heat from the inner wall of the lower mold 1. The fixing mechanism includes a compression cavity 6 set on the lower mold 1, a pressure valve 7 fixedly connected to the compression cavity 6, and an air outlet and an air inlet on the air bag 3. All are fixedly connected with one-way valves 2, compression chamber 6 and air outlet. When the coolant in the mounting chamber 5 flows to the outside of the mounting chamber 5, it will squeeze the air bag 3. The gas in the air bag 3 will be discharged into the compression chamber 6 through the air outlet. When the coolant returns to the mounting chamber 5, the gas in the lower mold 1 will flow into the air bag 3 under negative pressure. Repeating the above process will continuously move the gas in the lower mold 1 into the compression chamber 6. The one-way valves 2 set on the air outlet and air inlet restrict the gas to flow only from the air outlet through the air bag 3 and then from the air outlet into the compression chamber 6. When the gas pressure in the compression chamber 6 reaches the threshold of the pressure valve 7, it will be discharged from the compression chamber 6.

[0025] In this invention, when using the mold, molten liquid is first poured into the lower mold 1, and then the lower mold 1 and the upper mold are connected. Under the action of heat transfer, the temperature of the coolant in the mounting cavity 5 will rise. After absorbing heat, the low-boiling-point evaporator in the elastic block 10 will become a gaseous low-boiling-point evaporator, and the volume of the low-boiling-point evaporator will increase. The elastic block 10 will deform and increase in volume, which will squeeze the coolant in the mounting cavity 5. The sliding rod 12 slidably connected to the fixed plate 9 will slide relative to the fixed plate 9 due to the squeezing force. The sealing block fixedly connected to the sliding rod 12 will separate from the fixed plate 9. At the same time, because the fixed plate 9 will install... The space inside cavity 5 is divided into two spaces. The coolant temperature in the space of mounting cavity 5, which is farther away from the inner wall of the lower mold 1, is lower than that in the space near the inner wall of the lower mold 1. The coolant with lower temperature flows through the gap between the sliding rod 12 and the fixed plate 9 into the space with higher temperature coolant. Since the density of the higher temperature coolant is lower than that of the cold coolant, and due to the increase in coolant in the space of mounting cavity 5 near the inner wall of the lower mold 1, the hot coolant rises and flows out of mounting cavity 5 through the opening 11. When the volume of elastic block 10 increases, the inner wall of elastic block 10 and the side wall of mounting cavity 5 fit tightly together. Because the cold coolant is placed outside mounting cavity 5, the temperature of the side wall of mounting cavity 5 is lower. The low temperature causes the low-boiling-point evaporator in the elastic block 10 to liquefy again. Under the elastic force of the straight spring 18, the sliding rod 12 returns to its initial position, and the sealing block fixedly connected to the sliding rod 12 contacts the fixing plate 9 again, preventing the coolant on both sides of the fixing plate 9 from flowing to each other. As the coolant outside the mounting cavity 5 increases, the cold coolant flows into the mounting cavity 5 through the opening 11 provided at the bottom of the mounting cavity 5. At the same time, the opening 11 at the bottom restricts the coolant in the mounting cavity 5 from being discharged from the opening 11 at the bottom, so that cold coolant can be added back into the mounting cavity 5, while the hot coolant is cooled outside the mounting cavity 5. Repeating the above process makes the lower mold fit better. The coolant on the inner wall of the lower mold 1 flows continuously and is replaced with coolant of lower temperature for cooling. This cyclical process allows the liquid in the lower mold 1 to dissipate heat more quickly. At the same time, when the sliding rod 12 starts to move with the fixed plate 9, the limiting block 13 restricts the rotating block 14 from moving horizontally. As the sliding rod 12 moves, the protrusion 20 on the rotating block 14 slides in the groove 19, thereby causing the rotating block 14 to rotate. The first magnet 17 on the rotating block 14 and the second magnet 21 on the heat sink 15 are obliquely opposite each other. Under the action of repulsive force, the heat sink 15 will rotate continuously, which can also dissipate heat from the inner wall of the lower mold 1, which is conducive to the rapid molding of molten liquid.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A mold for accelerated forming comprising a lower mold (1) and an upper mold provided on the lower mold (1), characterized in that, The lower mold (1) is provided with an installation cavity (5), which is filled with coolant. The installation cavity (5) is provided with two openings (11). An elastic block (10) is provided in the installation cavity (5), which is filled with a low-boiling-point evaporating liquid. A fixing plate (9) is vertically fixedly connected in the installation cavity (5). A moving mechanism is provided on the fixing plate (9). A rotating mechanism that works with the moving mechanism is provided in the installation cavity (5). A base plate (8) is horizontally slidably connected in the lower mold (1). An airbag (3) is fixedly connected in the lower mold (1), and a fixing mechanism is provided on the airbag (3). The rotating mechanism includes multiple rotating rods (16) rotatably connected to the mounting cavity (5). Multiple heat sinks (15) are fixedly connected to each rotating rod (16). A second magnet (21) with the same magnetic pole as the first magnet (17) is fixedly connected to each heat sink (15). Hot coolant will float to the surface and flow out of the mounting cavity (5) through the opening (11) on the mounting cavity (5); cold coolant will flow into the mounting cavity (5) through the opening (11) provided below the mounting cavity (5). The moving mechanism includes a plurality of sliding rods (12) slidably connected to the fixed plate (9). Each sliding rod (12) is fixedly connected to a sealing block for restricting the flow of coolant. A straight spring (18) is arranged around the sliding rod (12). The two ends of the straight spring (18) are fixedly connected to the fixed plate (9) and the sliding rod (12) respectively. A limiting rod (4) is fixedly connected to the sliding rod (12), a limiting block (13) is fixedly connected to the fixing plate (9), a rotating block (14) is slidably connected to the limiting block (13), and an annular groove for the limiting block (13) to slide on the rotating block (14). A protrusion (20) is fixedly connected to the rotating block (14), and a threaded groove (19) is provided on the sliding rod (12). The protrusion (20) and the groove (19) are slidably connected, and a first magnet (17) is fixedly connected to one end of the rotating block (14).

2. A mold for accelerated forming according to claim 1, wherein The fixing mechanism includes a compression chamber (6) set on the lower mold (1), a pressure valve (7) fixedly connected to the compression chamber (6), an air outlet and an air inlet on the air bag (3), a one-way valve (2) fixedly connected to both the air outlet and the air inlet, and the compression chamber (6) and the air outlet fixedly connected.

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