Extruder gearbox structure

Abstract

The invention belongs to the technical field of extruder gear boxes, and particularly relates to an extruder gear box structure which comprises a box body, a transmission shaft is rotationally arranged on one side of an inner cavity of the box body, the two sides of the transmission shaft are fixedly sleeved with a first gear and a second gear respectively, and a bottom plate is fixedly connected to one side of the bottom of the inner cavity of the box body. A sliding seat is slidably connected to one side of the upper end face of the bottom plate, driving shafts are rotatably arranged at the two ends of the upper side of the sliding seat, the two sides of each driving shaft are fixedly sleeved with a third gear and a fourth gear respectively, and a wrapping type lubricating assembly is further arranged on the box body. By means of the wrapping type lubricating assembly, when the gear needs to be lubricated, the gear can be wrapped in the cavity formed by the two semicircular shells, lubricating oil is sprayed to the surface of the gear from the multiple spray heads after passing through the hose and the arc-shaped pipe, and due to the fact that the multiple spray heads are distributed in the circumferential direction of the gear, the lubricating oil can be evenly sprayed to the surface of the gear; and the lubricating effect can be improved.

Description

Technical Field

[0001] This invention belongs to the field of extruder gearbox technology, specifically an extruder gearbox structure. Background Technology

[0002] A screw extruder relies on the pressure and shearing force generated by the rotation of the screw to fully plasticize and uniformly mix materials, which are then shaped through a die. The extruder gearbox is a power transmission device used in the extruder. Its core function is to transmit and convert power through gear meshing, specifically including reducing motor speed and increasing output torque.

[0003] Patent CN222415813U discloses a multi-stage stable transmission twin-screw extruder gearbox. This patent solves the problem of inconvenient lubrication during transmission. The multi-stage stable transmission twin-screw extruder gearbox includes a gearbox body, inside which is an oil injection mechanism for lubricating the internal gears. The oil injection mechanism includes an oil storage box with a bottom groove on its bottom surface. A compression rod is slidably connected inside the bottom groove. A compression chamber is set inside the oil storage box. A compression plate is fixedly connected to one end of the compression rod. An inner groove is set in the inner wall of the compression chamber. A limit plate is slidably connected inside the inner groove. A slider and an extrusion plate are fixedly connected to one side of the limit plate. A liquid storage chamber is also set inside the oil storage box. The liquid storage chamber is filled with lubricating oil. A pressure valve is fixedly connected to the bottom surface of the inner wall of the liquid storage chamber. A liquid delivery pipe and an atomizing nozzle are fixedly connected to the bottom surface of the oil storage box, achieving the effect of convenient lubrication of gears during transmission.

[0004] However, the above technical solutions still have the following shortcomings in practical applications: Due to its internal multi-stage transmission, lubricating oil is sprayed onto the gear surface during use, thereby lubricating the gears, reducing friction and noise, and ensuring the stability of the transmission.

[0005] However, due to the limitations of this fixed-position spraying method, lubricating oil often fails to evenly cover the entire meshing surface of the gears, easily leading to uneven lubrication in certain areas. Furthermore, lubricating oil splashes when sprayed onto the gear surface. This not only exacerbates the uneven lubrication but also results in significant lubricating oil waste. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, the present invention proposes an extruder gearbox structure.

[0007] The technical solution adopted by the present invention to solve its technical problem is: an extruder gearbox structure, including a housing, a drive shaft rotatably arranged on one side of the inner cavity of the housing, a gear one and a gear two fixedly sleeved on both sides of the drive shaft, a base plate fixedly connected to one side of the bottom of the inner cavity of the housing, a slide block slidably connected to one side of the upper surface of the base plate, a drive shaft rotatably arranged at both ends of the upper side of the slide block, a gear three and a gear four fixedly sleeved on both sides of the drive shaft, and an encapsulated lubrication assembly is also provided on the housing; The encapsulated lubrication assembly includes a support beam fixedly connected to one side of the inner wall of the housing. A transverse plate is slidably connected to one side of the support beam, and a slider is slidably connected to one side of the transverse plate. Two guide rods are slidably connected to the slider, and a lifting plate is fixedly connected to the lower end of the guide rods. Semi-circular shells are slidably connected to both sides of the lower end face of the lifting plate. Adhesive cloths made of elastic material are fixedly connected to the inner edges of both sides of the semi-circular shells. An arc-shaped tube is fixedly connected to one side of the semi-circular shell, and multiple nozzles are provided on one side of the arc-shaped tube. The nozzles penetrate the semi-circular shell and are fixedly connected to it.

[0008] Preferably, an electric actuator is fixedly connected to one side of the upper surface of the base plate, and the piston end of the electric actuator is fixedly connected to one side of the slide block.

[0009] Preferably, a fourth motor is fixedly connected to one side of the upper end of the slide block, and the output end of the fourth motor is fixedly connected to one end of the drive shaft.

[0010] Preferably, an electric actuator three is fixedly connected to one side of the support beam, the piston end of the electric actuator three is fixedly connected to one side of the transverse plate, and an electric actuator four is fixedly connected to one side of the transverse plate, the piston end of the electric actuator four is fixedly connected to one side of the slider.

[0011] Preferably, an electric actuator five is fixedly connected to one side of the upper end face of the slider, and the piston end of the electric actuator five is fixedly connected to one side of the lifting plate.

[0012] Preferably, a lubricating oil tank is provided on one side of the upper end face of the housing, and a pump body is fixedly connected to one side of the lubricating oil tank. A hose is connected to the oil outlet end of the pump body. The hose passes through the top of the housing, and the two ends of the hose are respectively connected to two arc-shaped pipes.

[0013] Preferably, the lifting plate is rotatably provided with bidirectional threaded rods at both ends, and the two sides of the bidirectional threaded rods are respectively threaded to the two semi-circular shells on both sides. A motor is fixedly connected to one end of the lifting plate, and the output end of the motor is fixedly connected to one end of the bidirectional threaded rod.

[0014] Preferably, multiple traction rods are evenly distributed and slidably connected on both sides of the semi-circular shell, and a fixing column is fixedly connected to the end of each traction rod, and the end of the fixing column is fixedly connected to the bonding cloth.

[0015] Preferably, a telescopic rod is fixedly connected to one side of the semi-circular shell, a transmission plate is fixedly connected to the piston end of the telescopic rod, a threaded rod is rotatably provided on one side of the semi-circular shell, the threaded rod is threadedly connected to the transmission plate, a connecting rod is rotatably provided at one end of the traction rod, one end of the connecting rod is rotatably provided on the transmission plate, a second motor is fixedly connected to one side of the semi-circular shell, and the output end of the second motor is fixedly connected to one end of the threaded rod.

[0016] Preferably, it also includes a resilient support component; The elastic maintaining component includes an eccentric block rotatably mounted on a traction rod on one side. A motor is fixedly connected to one side of the traction rod. The output end of the motor is fixedly connected to the middle of the eccentric block. The edge of the eccentric block is attached to the surface of the bonding fabric.

[0017] The beneficial effects of this invention are as follows: 1. The extruder gearbox structure described in this invention utilizes an encapsulated lubrication assembly. When gear lubrication is required, the gear can be encapsulated in a cavity formed by two semi-circular shells. Lubricating oil is sprayed onto the gear surface from multiple nozzles after passing through a hose and an arc-shaped tube. Since the multiple nozzles are distributed along the circumference of the gear, the lubricating oil can be sprayed evenly on the gear surface, which is beneficial to improving the lubrication effect. Furthermore, the semi-circular shells intercept splashed lubricating oil, causing the lubricating oil adhering to the inner wall of the semi-circular shells to drip back onto the gear surface, thereby avoiding the waste of lubricating oil. Furthermore, when the inner ring of the semi-circular shell does not match the diameter of the replaced drive shaft or transmission shaft, the edge of the bonding cloth can be stretched by the fixing post to make the edge of the bonding cloth fit against the surface of the drive shaft or transmission shaft. At this time, the bonding cloth fills the gap in the middle of the semi-circular shell. When the lubricating oil is sprayed on the gear surface, the bonding cloth will also have an intercepting effect on the lubricating oil, thereby avoiding the gap between the edge of the inner ring of the semi-circular shell and the surface of the drive shaft or transmission shaft caused by the replacement of the drive shaft and transmission shaft. During lubrication, the lubricating oil is easy to splash out through the gap, resulting in uneven lubrication and waste of lubricating oil.

[0018] 2. The extruder gearbox structure described in this invention utilizes an elastic retaining component. Whenever lubricating oil is sprayed onto the gear surface, the eccentric block's rotation causes the bonding fabric to vibrate, thereby shaking off the lubricating oil hidden in its gaps and textures. This achieves self-cleaning of the bonding fabric, preventing the formation of clumps and hardening on the bonding fabric surface due to long-term accumulation of lubricating oil. It also helps maintain the elasticity of the bonding fabric and ensures the subsequent interception effect of lubricating oil. Attached Figure Description

[0019] The invention will now be further described with reference to the accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal three-dimensional structure of the box; Figure 3 This is a three-dimensional structural diagram of the slide block; Figure 4 This is a schematic diagram of the three-dimensional structure at the supporting beam. Figure 5 This is a schematic diagram of the three-dimensional structure at the transverse sliding plate. Figure 6 This is a schematic diagram of the three-dimensional structure of the lifting platform; Figure 7 This is a three-dimensional structural diagram of the traction rod. Figure 8 This is a schematic diagram of the three-dimensional structure at the eccentric block.

[0021] In the diagram: 1. Housing; 2. Lubricating oil tank; 3. Pump body; 4. Hoses; 5. Drive shaft; 6. Base plate; 7. Slide seat; 8. Electric actuator one; 9. Drive shaft; 10. Gear one; 11. Gear two; 12. Gear three; 13. Gear four; 14. Support beam; 15. Horizontal sliding plate; 16. Slider; 17. Lifting plate; 18. Electric actuator three; 19. Electric actuator four; 20. Guide rod; 21. Electric actuator five; 22. Bidirectional threaded rod; 23. Motor one; 24. Arc-shaped tube; 25. Nozzle; 26. Semi-circular shell; 27. Adhesive cloth; 28. Transmission plate; 29. ​​Motor two; 30. Threaded rod; 31. Telescopic rod; 32. Connecting rod; 33. Traction rod; 34. Fixed column; 35. Eccentric block; 36. Motor three; 37. Motor four. Detailed Implementation

[0022] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and 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.

[0023] Please refer to Figures 1-8 The present invention provides a technical solution: an extruder gearbox structure, including a housing 1, a drive shaft 5 rotatably disposed on one side of the inner cavity of the housing 1, a gear 10 and a gear 2 11 respectively fixedly sleeved on both sides of the drive shaft 5, a base plate 6 fixedly connected to one side of the bottom of the inner cavity of the housing 1, a slide block 7 slidably connected to one side of the upper end face of the base plate 6, a drive shaft 9 rotatably disposed at both ends of the upper side of the slide block 7, a gear 3 12 and a gear 4 13 respectively fixedly sleeved on both sides of the drive shaft 9, and a wrap-around lubrication assembly is also provided on the housing 1; The encapsulated lubrication assembly includes a support beam 14 fixedly connected to one side of the inner wall of the housing 1. A transverse plate 15 is slidably connected to one side of the support beam 14. A slider 16 is slidably connected to one side of the transverse plate 15. Two guide rods 20 are slidably connected to the slider 16. A lifting plate 17 is fixedly connected to the lower end of the guide rods 20. Semi-circular shells 26 are slidably connected to both sides of the lower end face of the lifting plate 17. Adhesive cloth 27 is fixedly connected to the inner edge of both sides of the semi-circular shell 26. The adhesive cloth 27 is made of elastic material. An arc-shaped tube 24 is fixedly connected to one side of the semi-circular shell 26. Multiple nozzles 25 are provided on one side of the arc-shaped tube 24. The nozzles 25 penetrate the semi-circular shell 26 and are fixedly connected to it.

[0024] In this embodiment, as Figures 2-7 As shown, an electric actuator 8 is fixedly connected to one side of the upper surface of the base plate 6, and the piston end of the electric actuator 8 is fixedly connected to one side of the slide block 7.

[0025] A motor 37 is fixedly connected to one side of the upper end of the slide 7, and the output end of the motor 37 is fixedly connected to one end of the drive shaft 9.

[0026] An electric actuator 18 is fixedly connected to one side of the support beam 14. The piston end of the electric actuator 18 is fixedly connected to one side of the transverse plate 15. An electric actuator 19 is fixedly connected to one side of the transverse plate 15. The piston end of the electric actuator 19 is fixedly connected to one side of the slider 16.

[0027] An electric actuator 21 is fixedly connected to one side of the upper end face of the slider 16, and the piston end of the electric actuator 21 is fixedly connected to one side of the lifting plate 17.

[0028] A lubricating oil tank 2 is provided on one side of the upper end face of the housing 1. A pump body 3 is fixedly connected to one side of the lubricating oil tank 2. A hose 4 is connected to the oil outlet end of the pump body 3. The hose 4 passes through the top of the housing 1, and the two ends of the hose 4 are respectively connected to the two arc-shaped pipes 24.

[0029] The lifting plate 17 has a bidirectional threaded rod 22 rotatably installed at both ends. The two sides of the bidirectional threaded rod 22 are threadedly connected to the two semi-circular shells 26 on both sides respectively. A motor 23 is fixedly connected to one end of the lifting plate 17, and the output end of the motor 23 is fixedly connected to one end of the bidirectional threaded rod 22.

[0030] Multiple traction rods 33 are evenly distributed and slidably connected on both sides of the semi-circular shell 26. The ends of the traction rods 33 are fixedly connected to the fixing posts 34, and the ends of the fixing posts 34 are fixedly connected to the bonding cloth 27.

[0031] A telescopic rod 31 is fixedly connected to one side of the semi-circular shell 26. A transmission plate 28 is fixedly connected to the piston end of the telescopic rod 31. A threaded rod 30 is rotatably provided on one side of the semi-circular shell 26. The threaded rod 30 is threadedly connected to the transmission plate 28. A connecting rod 32 is rotatably provided at one end of the traction rod 33. One end of the connecting rod 32 is rotatably provided on the transmission plate 28. A second motor 29 is fixedly connected to one side of the semi-circular shell 26. The output end of the second motor 29 is fixedly connected to one end of the threaded rod 30.

[0032] Specifically, existing extruder gearboxes, due to their multi-stage transmission, spray lubricating oil onto the gear surfaces during use to lubricate the gears, reduce friction and noise, and ensure transmission stability.

[0033] However, due to the limitations of this fixed-position spraying method, lubricating oil often fails to evenly cover the entire meshing surface of the gears, easily leading to uneven lubrication in certain areas. Furthermore, lubricating oil splashes when sprayed onto the gear surface. This not only exacerbates the uneven lubrication but also results in significant lubricating oil waste.

[0034] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: The drive shaft 5 is connected to the output shaft of the extruder's main drive motor. The electric push rod 8 drives the slide 7 to slide on the base plate 6. When gear 3 12 meshes with gear 1 10, motor 4 37 drives the drive shaft 9 to rotate. This allows the drive shaft 5 to rotate under the meshing of gears 1 10 and 3 12. Because the diameter of gear 3 12 is larger than that of gear 1 10, the drive shaft 5 rotates at high speed. When the slide 7 is driven to disengage gear 3 12 from gear 1 10, gear 2 11 and gear 4 13 mesh again. Because the diameter of gear 4 13 is smaller than that of gear 2 11, the drive shaft 5 rotates slowly. This achieves speed regulation of the drive shaft 5, which can be adjusted according to actual needs to adapt to different usage requirements.

[0035] When multiple gears need lubrication, the electric actuator 18 drives the transverse plate 15 to slide on the support beam 14, the electric actuator 19 drives the slider 16 to slide on the transverse plate 15, and the electric actuator 21 drives the lifting plate 17 to rise and fall. This adjusts the position of the two semi-circular shells 26 in the x, y, and z axes, and drives the slide block 7 to slide, so that gear 12 and gear 10, and gear 21 and gear 413 are not meshed. At this time, the two semi-circular shells 26 can be moved to both sides of the gear to be lubricated, and then the motor 23 drives the bidirectional threaded rod 22 to rotate. The two semi-circular shells 26 are driven to approach and fit together, enclosing the gear within the cavity formed by the two semi-circular shells 26. At this time, the pump body 3 draws lubricating oil from the lubricating oil tank 2, and the lubricating oil is sprayed onto the gear surface through the hose 4, the arc-shaped pipe 24, and multiple nozzles 25. Since the multiple nozzles 25 are distributed around the circumference of the gear, the lubricating oil can be sprayed evenly on the gear surface. Furthermore, the semi-circular shells 26 intercept the splashed lubricating oil, causing the lubricating oil adhering to the inner wall of the semi-circular shells 26 to drip back onto the gear surface, thus avoiding waste of lubricating oil. The above operation is then repeated to lubricate multiple gears in sequence.

[0036] Furthermore, in some cases, to meet different usage requirements, it is necessary to replace the drive shaft 5 and drive shaft 9 with different diameters. This can lead to gaps during subsequent lubrication, as the inner edges of the two semi-circular shells 26 cannot fit tightly against the surfaces of the drive shaft 5 and drive shaft 9. This gaps allow lubricating oil to easily splash out, resulting in uneven lubrication and oil waste. Therefore, to solve this problem, when the inner ring of the semi-circular shell 26 does not match the diameter of the replaced drive shaft 5 and drive shaft 9, the complete circular shell formed by the two semi-circular shells 26 can be aligned with the axis of the drive shaft 5 and drive shaft 9. The motor 29 can then drive the threaded rod 30 to rotate, causing the transmission plate 28 to move laterally. Simultaneously, the piston end of the telescopic rod 31 moves laterally, driving multiple connecting rods 32 to rotate simultaneously. The connecting rods 32 then drive the traction rod 33 to slide on the semi-circular shell 26, thereby stretching and fitting the shell through the fixed column 34. The edge of the fabric 27 is aligned with the surface of the drive shaft 5 or drive shaft 9. At this time, the fabric 27 fills the gap in the middle of the semi-circular shell 26. When the lubricating oil is sprayed on the gear surface, the fabric 27 will also intercept the lubricating oil, thus avoiding the situation where the inner edge of the semi-circular shell 26 and the surface of the drive shaft 5 or drive shaft 9 are separated due to the replacement of the drive shaft 5 and drive shaft 9. During lubrication, the lubricating oil is easy to splash out through the gap, resulting in uneven lubrication and waste of lubricating oil.

[0037] In this embodiment, as Figure 7 and Figure 8 As shown, it also includes a resilient support component; The elastic holding assembly includes an eccentric block 35 rotatably mounted on a traction rod 33 on one side. A motor 36 is fixedly connected to one side of the traction rod 33. The output end of the motor 36 is fixedly connected to the middle of the eccentric block 35. The edge of the eccentric block 35 is attached to the surface of the bonding cloth 27.

[0038] Specifically, in the above embodiments, although the bonding cloth 27 can be used to fill the gap in the middle of the semi-circular shell 26, because the bonding cloth 27 is elastic, when lubricating oil splashes onto the surface of the bonding cloth 27, some of the lubricating oil will be hidden in the gaps and textures of the bonding cloth 27 and will be difficult to remove. As the lubricating oil accumulates over a long period of time, the lubricating oil will clump and harden on the surface of the bonding cloth 27, thereby affecting the elasticity of the bonding cloth 27 and thus affecting the subsequent interception effect of the lubricating oil.

[0039] Therefore, in order to solve the above problems, the working principle of this embodiment is as follows: Whenever lubricating oil is sprayed onto the gear surface, motor 36 drives eccentric block 35 to rotate. The distal end of eccentric block 35 continuously squeezes one side of the bonding cloth 27. Since the bonding cloth 27 is elastic and is fixedly connected to multiple fixed posts 34, the bonding cloth 27 will vibrate, thereby shaking off the lubricating oil hidden in its gaps and textures. This achieves self-cleaning of the bonding cloth 27 and avoids the phenomenon of lubricating oil accumulating on the surface of the bonding cloth 27 for a long time, which would lead to clumping and hardening of the surface of the bonding cloth 27. This helps maintain the elasticity of the bonding cloth 27 and ensures the subsequent interception effect of lubricating oil.

[0040] Working principle: The drive shaft 5 is connected to the output shaft of the extruder's main drive motor. The electric push rod 8 drives the slide 7 to slide on the base plate 6. When gear 3 12 meshes with gear 1 10, motor 4 37 drives the drive shaft 9 to rotate. This meshing of gears 1 10 and 3 12 causes the drive shaft 5 to rotate. Because the diameter of gear 3 12 is larger than that of gear 1 10, the drive shaft 5 rotates at high speed. When the slide 7 is driven to disengage gear 3 12 from gear 1 10, gear 2 11 and gear 4 13 mesh again. Because the diameter of gear 4 13 is smaller than that of gear 2 11, the drive shaft 5 rotates slowly. This achieves speed regulation of the drive shaft 5, which can be adjusted according to actual needs to adapt to different usage requirements.

[0041] When multiple gears need lubrication, the electric actuator 18 drives the transverse plate 15 to slide on the support beam 14, the electric actuator 19 drives the slider 16 to slide on the transverse plate 15, and the electric actuator 21 drives the lifting plate 17 to rise and fall. This adjusts the position of the two semi-circular shells 26 in the x, y, and z axes, and drives the slide block 7 to slide, so that gear 12 and gear 10, and gear 21 and gear 413 are not meshed. At this time, the two semi-circular shells 26 can be moved to both sides of the gear to be lubricated, and then the motor 23 drives the bidirectional threaded rod 22 to rotate. The two semi-circular shells 26 are driven to approach and fit together, enclosing the gear within the cavity formed by the two semi-circular shells 26. At this time, the pump body 3 draws lubricating oil from the lubricating oil tank 2, and the lubricating oil is sprayed onto the gear surface through the hose 4, the arc-shaped pipe 24, and multiple nozzles 25. Since the multiple nozzles 25 are distributed around the circumference of the gear, the lubricating oil can be sprayed evenly on the gear surface. Furthermore, the semi-circular shells 26 intercept the splashed lubricating oil, causing the lubricating oil adhering to the inner wall of the semi-circular shells 26 to drip back onto the gear surface, thus avoiding waste of lubricating oil. The above operation is then repeated to lubricate multiple gears in sequence.

[0042] Furthermore, in some cases, to meet different usage requirements, it is necessary to replace the drive shaft 5 and drive shaft 9 with different diameters. This can lead to gaps during subsequent lubrication, as the inner edges of the two semi-circular shells 26 cannot fit tightly against the surfaces of the drive shaft 5 and drive shaft 9. This gaps allow lubricating oil to easily splash out, resulting in uneven lubrication and oil waste. Therefore, to solve this problem, when the inner ring of the semi-circular shell 26 does not match the diameter of the replaced drive shaft 5 and drive shaft 9, the complete circular shell formed by the two semi-circular shells 26 can be aligned with the axis of the drive shaft 5 and drive shaft 9. The motor 29 can then drive the threaded rod 30 to rotate, causing the transmission plate 28 to move laterally. Simultaneously, the piston end of the telescopic rod 31 moves laterally, driving multiple connecting rods 32 to rotate simultaneously. The connecting rods 32 then drive the traction rod 33 to slide on the semi-circular shell 26, thereby stretching and fitting the shell through the fixed column 34. The edge of the fabric 27 is aligned with the surface of the drive shaft 5 or drive shaft 9. At this time, the fabric 27 fills the gap in the middle of the semi-circular shell 26. When the lubricating oil is sprayed on the gear surface, the fabric 27 will also intercept the lubricating oil, thus avoiding the situation where the inner edge of the semi-circular shell 26 and the surface of the drive shaft 5 or drive shaft 9 are separated due to the replacement of the drive shaft 5 and drive shaft 9. During lubrication, the lubricating oil is easy to splash out through the gap, resulting in uneven lubrication and waste of lubricating oil.

[0043] Whenever lubricating oil is sprayed onto the gear surface, motor 36 drives eccentric block 35 to rotate. The distal end of eccentric block 35 continuously squeezes one side of the bonding cloth 27. Since the bonding cloth 27 is elastic and is fixedly connected to multiple fixed posts 34, the bonding cloth 27 will vibrate, thereby shaking off the lubricating oil hidden in its gaps and textures. This achieves self-cleaning of the bonding cloth 27 and avoids the phenomenon of lubricating oil accumulating on the surface of the bonding cloth 27 for a long time, which would lead to clumping and hardening of the surface of the bonding cloth 27. This helps maintain the elasticity of the bonding cloth 27 and ensures the subsequent interception effect of lubricating oil.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox structure for an extruder, comprising a housing (1), characterized in that: A drive shaft (5) is rotatably mounted on one side of the inner cavity of the housing (1). Gear 1 (10) and gear 2 (11) are fixedly mounted on both sides of the drive shaft (5). A base plate (6) is fixedly connected to one side of the bottom of the inner cavity of the housing (1). A slide block (7) is slidably connected to one side of the upper end face of the base plate (6). A drive shaft (9) is rotatably mounted on both ends of the upper side of the slide block (7). Gear 3 (12) and gear 4 (13) are fixedly mounted on both sides of the drive shaft (9). A wrap-around lubrication assembly is also provided on the housing (1). The encapsulated lubrication assembly includes a support beam (14) fixedly connected to one side of the inner wall of the housing (1). A transverse plate (15) is slidably connected to one side of the support beam (14). A slider (16) is slidably connected to one side of the transverse plate (15). Two guide rods (20) are slidably connected to the slider (16). A lifting plate (17) is fixedly connected to the lower end of the guide rods (20). A semi-circular shell (26) is slidably connected to both sides of the lower end face of the lifting plate (17). An adhesive cloth (27) is fixedly connected to the inner edge of both sides of the semi-circular shell (26). The adhesive cloth (27) is made of elastic material. An arc-shaped tube (24) is fixedly connected to one side of the semi-circular shell (26). Multiple nozzles (25) are provided on one side of the arc-shaped tube (24). The nozzles (25) penetrate the semi-circular shell (26) and are fixedly connected to it.

2. The extruder gearbox structure according to claim 1, characterized in that: An electric push rod (8) is fixedly connected to one side of the upper surface of the base plate (6), and the piston end of the electric push rod (8) is fixedly connected to one side of the slide (7).

3. The extruder gearbox structure according to claim 1, characterized in that: A motor four (37) is fixedly connected to one side of the upper end of the slide (7), and the output end of the motor four (37) is fixedly connected to one end of the drive shaft (9).

4. The extruder gearbox structure according to claim 1, characterized in that: One side of the support beam (14) is fixedly connected to an electric actuator three (18), the piston end of the electric actuator three (18) is fixedly connected to one side of the transverse plate (15), and one side of the transverse plate (15) is fixedly connected to an electric actuator four (19), the piston end of the electric actuator four (19) is fixedly connected to one side of the slider (16).

5. The extruder gearbox structure according to claim 1, characterized in that: An electric push rod (21) is fixedly connected to one side of the upper end face of the slider (16), and the piston end of the electric push rod (21) is fixedly connected to one side of the lifting plate (17).

6. The extruder gearbox structure according to claim 1, characterized in that: A lubricating oil tank (2) is provided on one side of the upper end face of the box (1). A pump body (3) is fixedly connected to one side of the lubricating oil tank (2). A hose (4) is connected to the oil outlet end of the pump body (3). The hose (4) passes through the top of the box (1), and the two ends of the hose (4) are connected to the two arc-shaped pipes (24) respectively.

7. The extruder gearbox structure according to claim 1, characterized in that: The lifting plate (17) is rotatably provided with a bidirectional threaded rod (22) at both ends. The two sides of the bidirectional threaded rod (22) are respectively threaded to the two semi-circular shells (26) on both sides. One end of the lifting plate (17) is fixedly connected to a motor (23), and the output end of the motor (23) is fixedly connected to one end of the bidirectional threaded rod (22).

8. The extruder gearbox structure according to claim 1, characterized in that: The two end faces of the semi-circular shell (26) are evenly distributed and slidably connected with multiple traction rods (33) along the circumference. The ends of the traction rods (33) are fixedly connected with fixed columns (34), and the ends of the fixed columns (34) are fixedly connected to the adhesive cloth (27).

9. The extruder gearbox structure according to claim 8, characterized in that: A telescopic rod (31) is fixedly connected to one side of the semi-circular shell (26). A transmission plate (28) is fixedly connected to the piston end of the telescopic rod (31). A threaded rod (30) is rotatably provided on one side of the semi-circular shell (26). The threaded rod (30) is threadedly connected to the transmission plate (28). A connecting rod (32) is rotatably provided at one end of the traction rod (33). One end of the connecting rod (32) is rotatably provided on the transmission plate (28). A second motor (29) is fixedly connected to one side of the semi-circular shell (26). The output end of the second motor (29) is fixedly connected to one end of the threaded rod (30).

10. The extruder gearbox structure according to claim 1, characterized in that: It also includes a resilient maintenance component; The elastic support assembly includes an eccentric block (35) rotatably mounted on a traction rod (33) on one side. A motor (36) is fixedly connected to one side of the traction rod (33). The output end of the motor (36) is fixedly connected to the middle of the eccentric block (35). The edge of the eccentric block (35) is attached to the surface of the bonding cloth (27).

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