Self-circulating oil circuit electric preformed reducer

Abstract

The application provides an electric pre-plastic reduction machine with a self-circulation oil circuit, which comprises a mounting block, a motor mounted on one side of the mounting block, a shell mounted on the other side of the mounting block, a first fixing block mounted on one side of the shell, a second fixing block mounted on one side of the first fixing block, and a mounting flange mounted on one side of the second fixing block; a filtering assembly arranged in the shell, the filtering assembly comprising a storage groove, a limiting plate and a filter screen; a circulating assembly arranged between the first fixing block and the second fixing block, the circulating assembly comprising a gear cavity, a driving gear, a driven gear and an oil pumping pipe; and a cooling assembly arranged on the top of the shell, the cooling assembly comprising a cooling box and a cooling pipe. The electric pre-plastic reduction machine filters oil through the filtering assembly, prolongs the oil change period, directly drives the gear pump through the output shaft in the circulating assembly, does not need an additional oil pump motor, keeps the pipeline full of oil, eliminates dry grinding during starting, and reduces the temperature of the oil through the cooling assembly.

Description

Technical Field

[0001] This invention relates to the field of electro-pre-plasticizing technology, specifically to an electro-pre-plasticizing reducer with a self-circulating oil circuit. Background Technology

[0002] The electric pre-plasticizing reducer is the core transmission component of the electric plasticizing unit of a plastic injection molding machine. Its main function is to convert the high speed and low torque output by the servo motor into the low speed and high torque required for the plasticizing screw to work. Due to the special nature of the injection molding process, the electric pre-plasticizing reducer operates under low speed and heavy load conditions for a long time. The internal gear meshing is intense, the friction heat generation is large, and the metal shavings generated by gear wear will gradually contaminate the lubricating oil.

[0003] Currently, existing electric pre-plasticizing reducers mainly use oil bath splash lubrication, which relies on gear rotation to agitate and splash lubricating oil to the lubrication points. However, in actual use, due to long-term operation, the lubricating oil deteriorates due to high temperature and metal shavings, resulting in decreased viscosity and reduced lubrication effect. To ensure the normal operation of the reducer, it is necessary to stop the machine regularly to change the lubricating oil, which affects production progress and increases operating costs. At the same time, splash lubrication relies on the random splashing of oil droplets generated by gear agitation, which can easily lead to insufficient lubrication for lubrication points far from the oil bath, resulting in equipment wear and shortening the overall service life of the reducer. After the equipment is shut down for a long time, all the lubricating oil flows back to the oil bath at the bottom of the housing. When restarted, the meshing surfaces of the upper gears are in an oil-free state. In the short period from the moment of startup to the moment the lubricating oil is agitated and splashed again, the friction pairs are in a state of dry friction, resulting in severe wear and affecting the life of the gears. Summary of the Invention

[0004] This invention aims to overcome the shortcomings of the prior art by providing an electro-pre-plasticized reducer with a self-circulating oil circuit. Through the setting of the filter component, the lubricating oil continuously flows through the filter screen during the circulation process, and metal shavings and impurities in the oil are effectively intercepted and deposited at the bottom of the storage tank, achieving long-term oil cleaning and extending the oil change cycle. Through the setting of the circulation component, the built-in output shaft directly drives the gear pump, eliminating the need for an additional oil pump motor, and keeping the pipeline full of oil, so that oil is sprayed at the moment of equipment start-up, eliminating dry running at start-up. Through the setting of the cooling component, the temperature of the oil can be reduced and the oxidation rate of the oil can be slowed down.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an electric pre-plasticizing reducer with a self-circulating oil circuit, comprising: A mounting block is provided, on one side of which a motor is mounted and on the other side which a housing is mounted. A first fixing block is mounted on one side of the housing, a second fixing block is mounted on one side of the first fixing block, and a mounting flange is mounted on one side of the second fixing block. A filter assembly is disposed within the housing. The filter assembly includes a storage tank, a limiting plate, and a filter screen. The storage tank is provided at the bottom of the inner wall of the housing. Two limiting plates are installed in the storage tank, and a filter screen is inserted between the two limiting plates. A circulation assembly is disposed between the first fixed block and the second fixed block. The circulation assembly includes: a gear cavity, a driving gear, a driven gear, and an oil extraction pipe. The first fixed block has a gear cavity inside, and the gear cavity has a driving gear and a driven gear that mesh with each other. The bottom of the first fixed block is connected to an oil extraction pipe. A cooling assembly is located on the top of the housing. The cooling assembly includes a cooling box and cooling pipes. The cooling box is installed on the top of the housing, and the cooling pipes are installed inside the cooling box in a serpentine structure.

[0006] Furthermore, a drive rod is driven to one side of the motor, and a sun gear is connected to one side of the drive rod. The sun gear is located inside the housing, and a gear ring is installed on the inner wall of the housing.

[0007] Furthermore, the housing is equipped with a planetary carrier, on one side of which three planetary gears are rotatably connected, and each planetary gear is meshed with the sun gear and the gear ring. An output shaft is fixedly connected to one side of the planetary carrier.

[0008] Furthermore, the output shaft passes through the gear cavity, the output shaft is keyed to the driving gear, the driven gear is rotatably connected to the gear cavity, and the bottom end of the oil extraction pipe extends into the storage tank.

[0009] Furthermore, the first fixing block is provided with an oil delivery pipe inside, and the housing is provided with a connecting pipe inside. The oil delivery pipe and the connecting pipe are positioned correspondingly. A one-way valve is installed inside the connecting pipe, and the connecting pipe is connected to the cooling box.

[0010] Furthermore, a first sealing ring and two second sealing rings are provided between the housing and the first fixing block, and the connection between the oil delivery pipe and the connecting pipe is located between the two second sealing rings.

[0011] Furthermore, a plurality of positioning grooves are provided on one side of the housing, and a plurality of positioning blocks are connected to one side of the first fixing block, the positioning blocks corresponding to the positioning grooves.

[0012] Furthermore, a third fixing block is connected to one side of the second fixing block, the third fixing block is positioned corresponding to the gear cavity, and an oil seal is provided between the second fixing block and the first fixing block.

[0013] Furthermore, the housing contains two annular fuel injection pipes with their centers connected. The housing also contains a connecting pipe that connects the cooling box and the fuel injection pipes. One side of each fuel injection pipe has a plurality of annularly arrayed nozzles.

[0014] This invention provides an electro-pre-plasticizing reducer with a self-circulating oil circuit, which has the following beneficial effects: The advantage of this invention is that, through the setting of the filter component, the lubricating oil continuously flows through the filter screen during the circulation process, and the metal shavings and impurities in the oil are effectively intercepted and deposited at the bottom of the storage tank, thereby achieving long-term oil cleaning, extending the oil change cycle, and reducing the user's maintenance costs and equipment downtime. Secondly, through the setting of the circulation component, the built-in output shaft directly drives the gear pump, eliminating the need for an additional oil pump motor. The gear pump starts and stops synchronously with the reducer. By setting a one-way valve in the pipeline, the lubricating oil is sealed in the upstream pipeline from the connecting pipe to the nozzle, ensuring that the pipeline system is always full of oil, so that the equipment sprays oil at the moment of startup, eliminating dry grinding at startup. Then, by setting up the cooling components, the cooling pipes are connected to the external cooling system. When the high-temperature lubricating oil flows through the cooling box, it undergoes efficient heat exchange with the cooling water in the cooling pipes, which quickly reduces the oil temperature and slows down the oil oxidation rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is a half-sectional view of the overall structure of the present invention.

[0017] Figure 3 This is an exploded view of the overall structure of the present invention.

[0018] Figure 4 This is an exploded view of the overall structure of the present invention from another angle.

[0019] Figure 5 This is a cross-sectional view of the overall structure of the present invention.

[0020] Figure 6 This is a cross-sectional view of the shell structure of the present invention.

[0021] Figure 7 This is a schematic diagram of the second fixing block structure of the present invention.

[0022] Figure 8 This is a schematic diagram of the first fixing block structure of the present invention.

[0023] Figure 9 This is a side cross-sectional view of the fuel injection pipe structure of the present invention.

[0024] Figure 10This is a side cross-sectional view of the gear cavity structure of the present invention.

[0025] Figure 11 For the present invention Figure 5 Enlarged view of point A in the image.

[0026] In the diagram: 1. Mounting block; 2. Motor; 201. Drive rod; 202. Sun gear; 3. Housing; 301. Gear ring; 302. Storage tank; 303. Limiting plate; 304. Filter screen; 305. First sealing ring; 306. Second sealing ring; 4. Planetary carrier; 401. Planetary gear; 402. Output shaft; 5. First fixing block; 501. Positioning block; 502. Positioning groove; 503. Gear cavity; 504. Driving gear; 5041. Driven gear; 505. Oil suction pipe; 506. Oil delivery pipe; 507. Connecting pipe; 508. Check valve; 6. Second fixing block; 601. Third fixing block; 7. Mounting flange; 8. Cooling box; 801. Cooling pipe; 802. Injection pipe; 803. Nozzle. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, an electric pre-plasticizing reducer with a self-circulating oil circuit includes: a mounting block 1, a motor 2 mounted on one side of the mounting block 1, a housing 3 mounted on the other side of the mounting block 1, a first fixing block 5 mounted on one side of the housing 3, a second fixing block 6 mounted on one side of the first fixing block 5, and a mounting flange 7 mounted on one side of the second fixing block 6; a filter assembly, disposed within the housing 3, the filter assembly including: a storage tank 302, a limiting plate 303, and a filter screen 304, the storage tank 302 being formed at the bottom of the inner wall of the housing 3, two limiting plates 303 being installed within the storage tank 302, and a filter screen 304 being inserted between the two limiting plates 303; circulation... The components include a circulation component located between the first fixed block 5 and the second fixed block 6, comprising a gear cavity 503, a driving gear 504, a driven gear 5041, and an oil extraction pipe 505. The first fixed block 5 has a gear cavity 503 inside, and the gear cavity 503 contains a driving gear 504 and a driven gear 5041 that mesh with each other. The bottom of the first fixed block 5 is connected to the oil extraction pipe 505. The cooling component is located on the top of the housing 3 and comprises a cooling box 8 and a cooling pipe 801. The cooling box 8 is installed on the top of the housing 3, and the cooling box 8 contains a serpentine cooling pipe 801.

[0030] Furthermore, a drive rod 201 is driven and connected to one side of the motor 2, and a sun gear 202 is connected to one side of the drive rod 201. The sun gear 202 is located inside the housing 3. A gear ring 301 is installed on the inner wall of the housing 3. A planetary carrier 4 is provided inside the housing 3. Three planetary gears 401 are rotatably connected to one side of the planetary carrier 4, and all planetary gears 401 are meshed with the sun gear 202 and the gear ring 301. An output shaft 402 is fixedly connected to one side of the planetary carrier 4. The output shaft 402 passes through the gear cavity 503 and is keyed to the driving gear 504. The driven gear 5041 is rotatably connected to the gear cavity 503. The bottom end of the oil extraction pipe 505 extends into the storage tank 302.

[0031] In operation, motor 2 drives sun gear 202 to rotate via drive rod 201. Sun gear 202 drives three planetary gears 401 to revolve within a fixed gear ring 301, thereby driving planet carrier 4 and output shaft 402 to rotate, reducing speed and increasing torque. Then, through the setting of the circulation component, the output shaft 402, while rotating, drives drive gear 504 to rotate via key connection. Drive gear 504 drives driven gear 5041, so that drive gear 504, driven gear 5041 and gear cavity 503 form a gear pump and start working. Then, through oil extraction pipe 505, lubricating oil that has been preliminarily filtered by filter screen 304 is drawn from storage tank 302 at the bottom of housing 3 and sent to connecting pipe 50. In step 7, the high-pressure oil opens the one-way valve 508 and enters the cooling tank 8. Then, the cooling pipe 801 is connected to the external cooling system, so that the cooling water in the cooling pipe 801 exchanges heat with the hot oil in the cooling tank 8, reducing the oil temperature. Then, the lubricating oil enters the oil injection pipe 802 through the connecting pipe and is sprayed at a certain pressure through the nozzle 803 onto the meshing surfaces of the planetary gear 401, the sun gear 202, and the gear ring 301, forming an effective lubricating oil film. The lubricated oil flows back into the storage tank 302 under the action of gravity. In the storage tank 302, heavier metal shavings and impurities will settle at the bottom, while the oil is filtered again by the filter screen 304 and is ready to be sucked into the oil extraction pipe 505 to start the next cycle.

[0032] When replacing the filter screen 304, disassemble the mounting flange 7, the second fixing block 6, and the first fixing block 5 in sequence. Then, remove the filter screen 304 from between the two limiting plates 303. Then, reinsert the new filter screen 304 between the two limiting plates 303. Then, reinstall the mounting flange 7, the second fixing block 6, and the first fixing block 5. At this time, the first fixing block 5 is just above the filter screen 304, blocking the return path of the filter screen 304, thereby completing the limitation of the filter screen 304.

[0033] Combination Figure 10 As shown, the first fixing block 5 is further provided with an oil supply pipe 506 inside, and the housing 3 is provided with a connecting pipe 507 inside. The oil supply pipe 506 and the connecting pipe 507 are positioned correspondingly. A one-way valve 508 is installed inside the connecting pipe 507. The connecting pipe 507 is connected to the cooling box 8.

[0034] The oil supply pipe 506 delivers the high-pressure oil pressurized from the gear cavity 503 to the cooling box 8 through the connecting pipe 507. The one-way valve 508 prevents the oil in the cooling box 8 and the oil spray pipe 802 from flowing back, keeping the entire upstream pipeline from the connecting pipe 507 to the nozzle 803 full of lubricating oil. This ensures that the nozzle 803 can spray oil immediately when the equipment is started next time, achieving zero-second pre-lubrication and eliminating dry friction during startup.

[0035] Reference Figure 6 and Figure 8As shown, a first sealing ring 305 and two second sealing rings 306 are provided between the housing 3 and the first fixing block 5, and the connection between the oil supply pipe 506 and the connecting pipe 507 is located between the two second sealing rings 306.

[0036] The first sealing ring 305 is responsible for sealing the outer periphery of the mating surface between the housing 3 and the first fixing block 5, while the two second sealing rings 306 are precisely arranged on both sides of the joint between the oil supply pipe 506 and the connecting pipe 507 to form an inner seal, ensuring that high-pressure oil will not leak from this joint to the outside of the mating surface.

[0037] Reference Figure 11 As shown, a plurality of positioning grooves 502 are provided on one side of the housing 3, and a plurality of positioning blocks 501 are connected to one side of the first fixing block 5, with the positioning blocks 501 corresponding to the positioning grooves 502.

[0038] When the first fixing block 5 is assembled with the housing 3, the positioning block 501 is aligned with the positioning groove 502 and inserted to make the oil supply pipe 506 and the connecting pipe 507 aligned, so as to avoid the oil circuit obstruction caused by misalignment.

[0039] Reference Figure 5 , Figure 7 and Figure 8 As shown, a third fixing block 601 is connected to one side of the second fixing block 6. The third fixing block 601 corresponds to the position of the gear cavity 503, and an oil seal is provided between the second fixing block 6 and the first fixing block 5. The second fixing block 6 is used to seal the outside of the gear cavity 503, and the third fixing block 601 cooperates with it to be inserted into the gear cavity 503, so that the driving gear 504, the driven gear 5041 and the gear cavity 503 constitute a gear pump.

[0040] Reference Figure 5 and Figure 9 As shown, the housing 3 has two annular fuel injection pipes 802 inside, and the two fuel injection pipes 802 are connected at their centers. The housing 3 has a connecting pipe inside, which is connected to the cooling box 8 and the fuel injection pipes 802. Multiple annular array nozzles 803 are provided on one side of the fuel injection pipes 802.

[0041] The cooled lubricating oil enters the oil injection pipe 802 through the connecting pipe and is sprayed onto the meshing surfaces of the planetary gear 401, the sun gear 202, and the gear ring 301 through the nozzle 803, forming an effective lubricating oil film.

[0042] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0043] The above provides a detailed description of an electro-pre-plasticizing reducer with a self-circulating oil circuit provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A self-circulating oil circuit electro-pre-plasticizing reducer, characterized in that, include: Mounting block (1), a motor (2) is mounted on one side of the mounting block (1), a housing (3) is mounted on the other side of the mounting block (1), a first fixing block (5) is mounted on one side of the housing (3), a second fixing block (6) is mounted on one side of the first fixing block (5), and a mounting flange (7) is mounted on one side of the second fixing block (6). A filter assembly is disposed inside the housing (3). The filter assembly includes a storage tank (302), a limiting plate (303), and a filter screen (304). The storage tank (302) is provided at the bottom of the inner wall of the housing (3). Two limiting plates (303) are installed in the storage tank (302), and a filter screen (304) is inserted between the two limiting plates (303). A circulation assembly is disposed between the first fixed block (5) and the second fixed block (6). The circulation assembly includes a gear cavity (503), a driving gear (504), a driven gear (5041), and an oil extraction pipe (505). The first fixed block (5) has a gear cavity (503) inside. The gear cavity (503) has a driving gear (504) and a driven gear (5041) meshing with each other inside. The bottom of the first fixed block (5) is connected to the oil extraction pipe (505). A cooling assembly is located on the top of the housing (3). The cooling assembly includes a cooling box (8) and a cooling pipe (801). The cooling box (8) is installed on the top of the housing (3). The cooling pipe (801) with a serpentine structure is installed inside the cooling box (8).

2. The electro-pre-plasticizing reducer with a self-circulating oil circuit according to claim 1, characterized in that, The motor (2) is driven by a drive rod (201) on one side, and a sun gear (202) is connected to one side of the drive rod (201). The sun gear (202) is located inside the housing (3), and a gear ring (301) is installed on the inner wall of the housing (3).

3. The electro-pre-plasticizing reducer with a self-circulating oil circuit according to claim 2, characterized in that, The housing (3) is provided with a planetary carrier (4), and three planetary gears (401) are rotatably connected to one side of the planetary carrier (4). The planetary gears (401) are all meshed with the sun gear (202) and the gear ring (301). An output shaft (402) is fixedly connected to one side of the planetary carrier (4).

4. The electro-pre-plasticizing reducer with a self-circulating oil circuit according to claim 3, characterized in that, The output shaft (402) passes through the gear cavity (503), the output shaft (402) is keyed to the driving gear (504), the driven gear (5041) is rotatably connected to the gear cavity (503), and the bottom end of the oil extraction pipe (505) extends into the storage tank (302).

5. The electro-pre-plasticizing reducer with a self-circulating oil circuit according to claim 1, characterized in that, The first fixing block (5) is provided with an oil delivery pipe (506) inside, and the housing (3) is provided with a connecting pipe (507) inside. The oil delivery pipe (506) and the connecting pipe (507) are positioned correspondingly. A one-way valve (508) is installed inside the connecting pipe (507). The connecting pipe (507) is connected to the cooling box (8).

6. The electro-pre-plasticizing reducer with a self-circulating oil circuit according to claim 5, characterized in that, A first sealing ring (305) and two second sealing rings (306) are provided between the housing (3) and the first fixing block (5), and the connection between the oil supply pipe (506) and the connecting pipe (507) is located between the two second sealing rings (306).

7. The electro-pre-plasticizing reducer with a self-circulating oil circuit according to claim 1, characterized in that, The housing (3) has multiple positioning slots (502) on one side, and the first fixing block (5) has multiple positioning blocks (501) connected to one side. The positioning blocks (501) correspond to the positioning slots (502).

8. The electro-pre-plasticizing reducer with a self-circulating oil circuit according to claim 1, characterized in that, A third fixing block (601) is connected to one side of the second fixing block (6). The third fixing block (601) corresponds to the position of the gear cavity (503), and an oil seal is provided between the second fixing block (6) and the first fixing block (5).

9. The electro-pre-plasticizing reducer with a self-circulating oil circuit according to claim 1, characterized in that, The housing (3) is provided with two annular oil injection pipes (802) inside, and the two oil injection pipes (802) are connected in the center. The housing (3) is provided with a connecting pipe, which is connected to the cooling box (8) and the oil injection pipes (802). Multiple annular array nozzles (803) are provided on one side of the oil injection pipes (802).

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