A plastic rapid prototyping mold

Abstract

The application discloses a kind of plastic rapid prototyping mould, it is related to plastic mould technical field, including base, installation platform and mounting plate are equipped on the base, motor is fixedly arranged on the mounting plate, the motor is connected with intermittent transposition component, fixed die can be moved back and forth on the installation platform, fixed shaft is equipped on the installation platform side wall, the fixed shaft is equipped with the installation disc driven by intermittent transposition component, a plurality of equidistantly arranged movable dies are fixed on the installation disc, the demolding mechanism is equipped on the movable die, a plurality of flow guide pipes extending to the inside of movable die are formed in the installation disc, the sealing ring coaxially arranged with fixed shaft is also fixedly arranged on the installation platform, the sealing ring is equipped with the perforation corresponding with the import and export of flow guide pipe.The installation disc seat is driven by intermittent transposition component to make intermittent rotary motion, after die opening of movable die and fixed die, the next movable die can be immediately die closing with it, and production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of plastic mold technology, and more particularly to a plastic rapid prototyping mold. Background Technology

[0002] Injection molds are tools used to produce plastic products, and they also give plastic products a complete structure and precise dimensions. Injection molding is a processing method used to mass-produce certain complex-shaped parts.

[0003] In the existing technology, the production of the desired product requires several steps, including mold closing, extrusion, cooling, and mold opening, when using injection molds. The next round of operation can only be carried out after the product is removed from the mold after it has cooled down. Since the mold opening and closing and cooling processes waste a lot of time, the production efficiency of the mold is low. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of low production efficiency caused by the long cooling and mold opening and closing process when using injection molds in the prior art, and to propose a plastic rapid prototyping mold.

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

[0006] A plastic rapid prototyping mold includes a base, a mounting platform and a mounting plate on the base, a motor fixedly mounted on the mounting plate, the motor connected to an intermittent switching component, a fixed mold movable back and forth on the mounting platform, a fixed shaft on the side wall of the mounting platform, a mounting disc driven by the intermittent switching component sleeved on the fixed shaft, multiple equidistant moving molds fixed on the mounting disc, a demolding mechanism on the moving molds, multiple guide pipes extending into the interior of the moving molds opened in the mounting disc, a sealing ring coaxially mounted on the mounting platform and coaxially mounted with the fixed shaft, the sealing ring having through holes corresponding to the inlet and outlet of the guide pipes, a connecting hole opened on the fixed shaft, the through holes, the connecting hole and the guide pipes in the two corresponding moving molds being interconnected to form a channel for the flow of heat-conducting fluid.

[0007] Preferably, the bottom of the fixed mold is provided with a slider, the mounting platform is provided with a sliding groove, the slider is slidably connected to the sliding groove, and a spring is provided between the slider and the sliding groove. The fixed mold is connected to an injection molding pipe.

[0008] Preferably, there are two perforations, one of which is connected to the inlet of the guide pipe, and the other of which is connected to the outlet of the guide pipe.

[0009] Preferably, the outer wall of the injection molding nozzle is fitted with an insulation block, and the insulation block is connected to the perforation of the corresponding flow channel outlet through a conduit.

[0010] Preferably, the fixed shaft is inclined upwards, and the installation angle of the moving mold and the mounting plate is consistent with the inclination angle of the fixed shaft.

[0011] Preferably, the intermittent switching assembly includes a rotary wheel fixedly mounted on the mounting plate, a cam fixedly mounted on the motor output end, a pressing post fixedly mounted on the side wall edge of the cam, and multiple openings on the rotary wheel. When the cam rotates, the pressing post presses against the inner wall of the opening, causing the rotary wheel to rotate.

[0012] Preferably, the fixed mold has two slots on the side near the moving mold, and the outer wall of the moving mold has a protrusion that is adapted to the slots for installation.

[0013] Preferably, the cross-sections of the protrusion and the slot are both semi-circular.

[0014] Preferably, the demolding mechanism includes a mold core disposed in the moving mold, a sliding column fixedly disposed at the bottom of the mold core, and a sliding hole communicating with a flow guide pipe being opened at the bottom of the moving mold, and the sliding column and the sliding hole being slidably connected.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. This invention drives the mounting plate to rotate intermittently through an intermittent switching component, so that after the moving mold and the fixed mold open, they can immediately close with the next moving mold. By matching different moving molds and fixed molds, the time wasted due to re-closing the mold after removing the product is saved, thus shortening the processing cycle and improving production efficiency.

[0017] 2. This invention uses a combination of flow channels and perforations to allow the heat-conducting fluid to cool the interior of the moving mold after mold closing, thereby dissipating the heat from the mold during mold closing, increasing the cooling rate of the material, and improving production efficiency. The flow channels of the upper and lower moving molds are connected by connecting holes, allowing the pressure of the heat-conducting fluid to push the sliding column outward, causing the mold core in the lower moving mold to push the product outward, facilitating demolding.

[0018] 3. The present invention sets up a heat insulation block. After the heat-conducting fluid flows through the guide pipe, the heat insulation block is introduced to keep the residual heat of the hot heat-conducting fluid warm to keep the injection molding pipe warm. This keeps the preheated molten plastic in the injection molding pipe at a constant temperature and prevents solidification due to cooling, which could lead to blockage of the injection molding pipe. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a plastic rapid prototyping mold proposed in this invention;

[0020] Figure 2 This is a schematic diagram of the left-side structure of a plastic rapid prototyping mold proposed in this invention;

[0021] Figure 3 This is a schematic diagram illustrating the positional relationship between the sealing ring and the fixing post in a plastic rapid prototyping mold proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the structure of the dividing roller in a plastic rapid prototyping mold proposed in this invention;

[0023] Figure 5 This is a schematic diagram of the cam structure in a plastic rapid prototyping mold proposed in this invention;

[0024] Figure 6 This is a schematic diagram of the connection relationship between the rotating platen and the moving mold in a plastic rapid prototyping mold proposed in this invention;

[0025] Figure 7 This is a schematic diagram of the connection relationship between the fixed mold and the slider in a plastic rapid prototyping mold proposed in this invention;

[0026] Figure 8 This is a schematic diagram of the connection relationship between the mold core and the sliding column in a plastic rapid prototyping mold proposed in this invention.

[0027] In the diagram: 1. Base; 2. Mounting platform; 3. Mounting plate; 4. Fixed mold; 5. Intermittent repositioning component; 6. Fixed shaft; 7. Motor; 8. Slider; 9. Slide groove; 10. Moving mold; 11. Mounting plate; 12. Guide pipe; 13. Sealing ring; 14. Perforation; 15. Connecting hole; 16. Injection pipe; 17. Insulation block; 18. Dividing roller; 19. Cam; 20. Pressing column; 21. Opening; 22. Slot; 23. Protrusion; 24. Mold core; 25. Sliding column; 26. Sliding hole. Detailed Implementation

[0028] 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.

[0029] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Reference Figure 1-3A plastic rapid prototyping mold includes a base 1, a mounting platform 2 and a mounting plate 3 on the base 1, a motor 7 fixedly mounted on the mounting plate 3, the end of the mounting plate 3 being inclined so that the axis of the motor 7 is at a certain angle to the horizontal plane, and the motor 7 is connected to an intermittent switching component 5.

[0031] Reference Figure 1 , 4 The intermittent repositioning component 5 includes a rotary wheel 18 fixedly mounted on the mounting plate 11. The rotary wheel 18 is fixed to the mounting plate 11 by multiple connecting columns, and the rotary wheel 18 and the mounting plate 11 are coaxially arranged. The rotation of the rotary wheel 18 drives the mounting plate 11 to rotate. A cam 19 is fixedly mounted on the output end of the motor 7. A pressing column 20 is fixedly mounted on the side wall edge of the cam 19. Multiple openings 21 are opened on the rotary wheel 18. When the cam 19 rotates, the pressing column 20 presses against the inner wall of the opening 21, causing the rotary wheel 18 to rotate. The motor 7 drives the cam 19. When the cam 19 rotates one revolution, the rotary wheel 18 rotates a certain angle, causing the mounting plate 11 to rotate intermittently.

[0032] The mounting platform 2 has a fixed mold 4 that can move back and forth. The side wall of the mounting platform 2 is provided with a fixed shaft 6. The fixed shaft 6 is fitted with a mounting plate 11 driven by the intermittent shifting component 5. Multiple moving molds 10 are fixed on the mounting plate 11 at equal intervals. A complete cavity is formed by the closing of the moving molds 10 and the fixed mold 4.

[0033] Reference Figure 1 The fixed shaft 6 is inclined upwards, and the installation angle of the moving mold 10 and the mounting plate 11 is consistent with the inclination angle of the fixed shaft 6. When the mounting plate 11 rotates, the moving mold 10 at the top and the fixed mold 4 can be in the mold-closing state, and the moving mold 10 at the bottom expands outwards, making it easier to demold the product.

[0034] Reference Figure 1-3 The fixed mold 4 has a slider 8 at its bottom and a groove 9 on the mounting platform 2. The slider 8 is slidably connected to the groove 9, and a spring is provided between the slider 8 and the groove 9. The spring presses against the slider 8, allowing the fixed mold 4 to move within a small range on the mounting platform 2. When the moving mold 10 and the fixed mold 4 are closed, they will partially overlap. By changing the position of the fixed mold 4, the moving mold 10 can be smoothly closed with the fixed mold 4. The fixed mold 4 is connected to an injection pipe 16, which is used to inject fluid plastic into the cavity after the mold is closed, so that the plastic is molded into a product.

[0035] Reference Figure 6-7 The fixed mold 4 has two slots 22 on the side near the moving mold 10. The outer wall of the moving mold 10 is provided with a protrusion 23 that is adapted to the slots 22. The protrusion 23 and the slots 22 engage to accurately position the moving mold 10 and the fixed mold 4, making the mold closing position more accurate.

[0036] Reference Figure 6-7 Both the protrusion 23 and the slot 22 have semi-circular cross sections. When the mold is closed, the moving mold 10 closes with the fixed mold 4 by rotating. The protrusion 23 will first press against the fixed mold 4, causing the fixed mold 4 to move backward and compress the spring. Then, the protrusion 23 will engage with the slot 22 to complete the mold closing.

[0037] The moving mold 10 is equipped with a demolding mechanism. Multiple guide pipes 12 extending into the interior of the moving mold 10 are provided in the mounting plate 11. The heat-conducting fluid flows in the guide pipes 12 to cool the moving mold 10, so that the injection-molded product can be cooled quickly and production efficiency can be improved. A sealing ring 13 coaxially arranged with the fixed shaft 6 is also fixedly installed on the mounting platform 2. The sealing ring 13 has through holes 14 corresponding to the inlet and outlet of the guide pipe 12. The through holes 14 are only connected to the uppermost guide pipe 12. The inlet and outlet of multiple guide pipes 12 are located on the same side of the mounting plate 11 and are distributed in a ring. The sealing ring 13 is sealed and fitted to the side wall of the mounting plate 11 to block the inlet and outlet of the guide pipe 12.

[0038] Reference Figure 3 and 6 There are two perforations 14. One perforation 14 is connected to the inlet of the guide pipe 12, and the other perforation 14 is connected to the outlet of the guide pipe 12. After the heat transfer fluid is cooled, it enters through the inlet and exits through the outlet of the guide pipe 12, which is beneficial for cooling the moving mold 10.

[0039] Reference Figure 1 The outer wall of the injection molding connector 16 is fitted with a heat insulation block 17. The heat insulation block 17 is connected to the perforation 14 at the outlet of the corresponding flow guide pipe 12 through a conduit. After the heat-conducting fluid passes through the moving mold 10, the temperature rises and enters the heat insulation block 17 from the outlet of the flow guide pipe 12. The high-temperature heat-conducting fluid insulates the injection molding connector 16 and prevents the plastic inside the injection molding connector 16 from solidifying and blocking it.

[0040] A connecting hole 15 is provided on the fixed shaft 6. The through hole 14, the connecting hole 15 and the guide pipes 12 in the two corresponding moving molds 10 can be interconnected to form a channel for the flow of heat-conducting fluid.

[0041] Reference Figure 3 , 68. The demolding mechanism includes a mold core 24 disposed in the moving mold 10. The shape of the mold core 24 is consistent with the product, which is convenient for production. A sliding column 25 is fixedly disposed at the bottom of the mold core 24. A sliding hole 26 connected to the guide pipe 12 is opened at the bottom of the moving mold 10. The sliding column 25 is slidably connected to the sliding hole 26. When the moving mold 10 and the fixed mold 4 are closed, the through hole 14, the connecting hole 15 and the guide pipes 12 in the two corresponding moving molds 10 can be interconnected. The heat transfer fluid applies pressure to the channel, so that the sliding column 25 on the lower moving mold 10 is pressured and moves outward, driving the mold core 24 to move outward, so that the product is squeezed out of the moving mold 10, which is convenient for demolding.

[0042] The specific working principle of this invention is as follows:

[0043] In use, the motor 7 is started, which drives the cam 19 to rotate. The cam 19 causes the pressure column 20 to press against the opening 21 on the dividing roller 18, causing the dividing roller 18 to drive the mounting plate 11 to rotate intermittently. This causes the moving mold 10 and the fixed mold 4 to automatically separate after being closed for a period of time. During mold closing, the fluid plastic cup is injected into the cavity, and the low-temperature heat-conducting fluid flows into the guide pipe 12 from the perforation 14, which cools the moving mold 10 and improves the cooling efficiency after the product is injected. Then the mounting plate 11 rotates, causing the next moving mold 10 to close with the fixed mold 4, achieving rapid injection molding and saving the time required for opening and closing the mold. At the same time, the connecting hole 15 connects the guide pipes 12 on the upper and lower moving molds 10. The internal pressure of the guide pipe 12 causes the mold core 24 located in the lower moving mold 10 to move outward, allowing the product to be demolded quickly and easily.

[0044] 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 plastic rapid prototyping mold, comprising a base (1), wherein the base (1) is provided with a mounting platform (2) and a mounting plate (3), characterized in that, A motor (7) is fixedly mounted on the mounting plate (3). The motor (7) is connected to an intermittent switching component (5). A fixed mold (4) that can move back and forth is provided on the mounting platform (2). A fixed shaft (6) is provided on the side wall of the mounting platform (2). A mounting disc (11) driven by the intermittent switching component (5) is sleeved on the fixed shaft (6). Multiple moving molds (10) are fixed on the mounting disc (11) at equal intervals. A demolding mechanism is provided on the moving mold (10). An opening is provided inside the mounting disc (11). Multiple flow guide pipes (12) extending into the interior of the moving mold (10) are provided. A sealing ring (13) coaxially arranged with the fixed shaft (6) is also fixedly provided on the mounting platform (2). The sealing ring (13) has through holes (14) corresponding to the inlet and outlet of the flow guide pipes (12). A connecting hole (15) is provided on the fixed shaft (6). The through holes (14), the connecting hole (15) and the flow guide pipes (12) in the two moving molds (10) corresponding to each other can be interconnected to form a channel for the flow of heat-conducting fluid. The fixed shaft (6) is inclined upwards, and the installation angle of the moving mold (10) and the mounting plate (11) is consistent with the inclination angle of the fixed shaft (6); The demolding mechanism includes a mold core (24) disposed in the moving mold (10), a sliding column (25) is fixedly disposed at the bottom of the mold core (24), and a sliding hole (26) connected to the guide pipe (12) is opened at the bottom of the moving mold (10), and the sliding column (25) and the sliding hole (26) are slidably connected.

2. The plastic rapid prototyping mold according to claim 1, characterized in that, The fixed mold (4) is provided with a slider (8) at the bottom, and a slide groove (9) is provided on the mounting platform (2). The slider (8) is slidably connected to the slide groove (9), and a spring is provided between the slider (8) and the slide groove (9). The fixed mold (4) is connected to an injection molding pipe (16).

3. A plastic rapid prototyping mold according to claim 1, characterized in that, There are two perforations (14), one of which is connected to the inlet of the guide pipe (12), and the other of which is connected to the outlet of the guide pipe (12).

4. A plastic rapid prototyping mold according to claim 2, characterized in that, The outer wall of the injection molding pipe (16) is fitted with a heat insulation block (17), and the heat insulation block (17) is connected to the perforation (14) of the outlet of the corresponding flow guide pipe (12) through a conduit.

5. A plastic rapid prototyping mold according to claim 1, characterized in that, The intermittent switching component (5) includes a rotary wheel (18) fixedly mounted on the mounting plate (11), a cam (19) fixedly mounted on the output end of the motor (7), a pressing column (20) fixedly mounted on the side wall edge of the cam (19), and multiple openings (21) opened on the rotary wheel (18). When the cam (19) rotates, the pressing column (20) presses against the inner wall of the opening (21) to make the rotary wheel (18) rotate.

6. A plastic rapid prototyping mold according to claim 1, characterized in that, The fixed mold (4) has two slots (22) on the side near the moving mold (10), and the outer wall of the moving mold (10) is provided with a protrusion (23) that is adapted to the slots (22).

7. A plastic rapid prototyping mold according to claim 6, characterized in that, Both the protrusion (23) and the slot (22) have semi-circular cross-sections.

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