Precise oil injection device and method for gear box of extruding machine

Abstract

The invention belongs to the technical field of gearbox oiling, and discloses a precise oiling device and method for an extruder gearbox. Comprising a mounting shell, an oil injection structure and a regulation and control structure are mounted on the mounting shell, an isolation structure is slidably connected into the mounting shell, and an in-place crank is mounted between the regulation and control structure and the isolation structure; through cooperation of structures such as the valve assembly and the steering assembly, the bottom of the mounting shell is communicated through the communicating pipe, then the liquid level height of lubricating oil in the mounting shell is detected through the piston rod, along with use of the gearbox, the lubricating oil in the mounting shell is consumed, the height is reduced, and then the height of the piston rod is reduced; through cooperation of a lower steering sliding block and a lower deflection wedge-shaped block, a piston rod drives an intercepting plate to rotate, then an oil conveying pipe communicates with the intercepting plate, and lubricating oil in an oil storage tank is injected into a mounting shell through the oil conveying pipe and rises along with the liquid level in the mounting shell.

Description

Technical Field

[0001] This invention belongs to the field of gearbox lubrication technology, specifically a precise lubrication device and method for extruder gearboxes. Background Technology

[0002] During use, the gearbox is filled with lubricating oil to ensure its normal rotation. However, the lubricating oil has a limited lifespan and needs to be replenished after a certain period of use. Currently, the main method for replacement is to manually open the gearbox's oil filler port and pour in the lubricating oil during the gearbox's use until the lubricating oil level in the gearbox reaches the marked position.

[0003] During gearbox operation, the lubricating oil level is difficult to observe due to the generally small size of the oil inlet. Furthermore, the lubricating oil may atomize due to the high temperature generated by the high-speed rotation of the gears during the trial period, making it even more difficult to observe the inside of the gearbox. Summary of the Invention

[0004] To address the problem mentioned in the background art of small oil inlets making it difficult to observe the liquid level after oil injection, the present invention provides a precise oil injection device and method for extruder gearboxes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a precision oil injection device for an extruder gearbox, comprising a mounting housing, an oil injection structure and a regulating structure mounted on the mounting housing, an isolation structure slidably connected inside the mounting housing, and a co-positioned crank installed between the regulating structure and the isolation structure; The oil injection structure includes a mounting frame installed outside the mounting housing, an oil storage tank installed inside the mounting frame, an oil delivery pipe installed on the oil storage tank, and an oil injection pipe installed on the oil delivery pipe; The control structure includes a connecting pipe that communicates with the mounting housing, a piston rod that is slidably connected inside the connecting pipe, a lower sliding pipe that is installed on the connecting pipe, and a valve assembly that is slidably connected to the piston rod.

[0006] Preferably, the oil injection pipe is installed through the mounting housing, the oil delivery pipe has a through hole with the same inner diameter as the lower sliding pipe, and the valve assembly is installed inside the oil delivery pipe.

[0007] Preferably, a pressure spring is provided around the piston rod between the connecting pipe and the piston rod, and an upper sliding pipe is installed on the oil injection pipe corresponding to the lower sliding pipe, the size of the upper sliding pipe being the same as that of the lower sliding pipe.

[0008] Preferably, the valve assembly includes a valve tube installed inside the oil injection pipe, an isolation block installed on the lower side of the valve tube, an interceptor plate slidably connected to the isolation block, a connecting hole for connecting the valve tube and the oil injection pipe on the valve tube, a squeezing block slidably connected inside the interceptor plate, and a spring sheet provided between the squeezing block and the interceptor plate.

[0009] Preferably, a steering rod is installed on the upper side of the piston rod, the steering rod is slidably connected to the interceptor plate, the steering rod and the deflection through hole opened on the interceptor plate have the same size, and a steering assembly is installed on the upper side of the upper sliding tube.

[0010] Preferably, the steering assembly includes a sliding rod that is slidably connected through an upper sliding tube, a lower steering slider that is slidably connected to the sliding rod, an upper steering slider that is slidably connected to the sliding rod, a lower deflection wedge block that is pressed and engaged with the lower steering slider that is mounted on the upper sliding tube, and an mounting plate that is mounted on the upper sliding tube and an upper deflection wedge block that is pressed and engaged with the upper steering slider that is mounted on the mounting plate.

[0011] Preferably, the angle between the lower deflection wedge block and the upper deflection wedge block is 90 degrees, the lower end of the sliding rod is installed at the upper end of the upper sliding tube, and the angle between the upper steering slider and the lower steering slider is 90 degrees.

[0012] Preferably, the transmission structure includes a corresponding crank mounted on a sliding rod, a limiting slide rod mounted on the corresponding crank, a compression slider slidably connected through the corresponding crank, a return spring arranged around the limiting slide rod between the compression slider and the corresponding crank, an mounting block mounted on the oil pipe, a limiting block slidably connected to the mounting block, a limiting spring arranged between the mounting block and the limiting block, and the limiting block and the compression slider being compressively engaged.

[0013] Preferably, the isolation structure includes a sliding extension rod that slides within an oil injection pipe, the sliding extension rod being fixedly connected to a compression slider, a transmission block being mounted on the outer contour of the sliding extension rod, a limiting sliding shaft being installed within the oil injection pipe, symmetrically distributed sealing blocks being mounted on the limiting sliding shaft, the lower end face of the sealing blocks being higher than the lower end face of the limiting sliding shaft, an isolation sliding plate being slidably connected to both the limiting sliding shaft and the sealing blocks, and a compression spring being provided between the isolation sliding plate and the limiting sliding shaft, surrounding the limiting sliding shaft and the sealing blocks.

[0014] The present invention also provides a method for precise oil injection into an extruder gearbox, comprising the following steps: S1. The piston rod is connected to the bottom of the mounting housing via a connecting pipe. The height of the piston rod in the connecting pipe indicates the level of the lubricating oil in the mounting housing. The height of the piston rod indicates the amount of lubricating oil in the mounting housing. As the mounting housing is used, the lubricating oil is consumed, and the piston rod gradually slides down to the lowest position. Then, the sliding rod presses the lower steering slider and, in conjunction with the lower deflection wedge block, causes the piston rod to rotate 90 degrees. At the same time, the steering rod drives the intercepting plate to rotate 90 degrees, thus connecting the intercepting plate to the oil supply pipe, allowing the lubricating oil in the oil storage tank to be injected into the mounting housing. S2. By sliding the sliding rod up and down, the corresponding crank slides synchronously, which in turn squeezes the squeezing slider and the sliding extension rod down synchronously until the squeezing slider squeezes the limiting block, causing the limiting block to slide towards the mounting block. When the squeezing slider slides to the lower side of the limiting block, the sliding rod slides up, which in turn drives the corresponding crank to slide synchronously. The squeezing slider is kept stationary by the limiting block until the corresponding crank slides to its original position, so that the elastic force of the return spring reaches its maximum, which causes the squeezing slider to break through the limit of the limiting block and return to its original position together with the sliding extension rod. S3. By sliding the extension rod up and down, the transmission block slides synchronously, and then the transmission block squeezes the isolation sliding plate downward. Since the lower end face of the sealing block is higher than the lower end face of the limiting sliding shaft, the sealing state between the isolation sliding plate, the limiting sliding shaft, and the sealing block is released, so that the oil injection pipe is connected to the inside of the mounting housing, and the lubricating oil in the oil tank is injected into the mounting housing. When the extension rod returns to its original position, it squeezes the isolation sliding plate to its original position.

[0015] This invention utilizes a combination of valve and steering components, connecting the bottom of the mounting housing via a connecting pipe. A piston rod detects the lubricating oil level within the mounting housing. As the gearbox operates, the lubricating oil level decreases due to consumption, causing the piston rod to descend. The lower steering slider and lower deflection wedge, in turn, cause the piston rod to rotate, connecting the oil supply pipe to the deflection plate. Lubricating oil from the storage tank is then injected into the mounting housing via the oil supply pipe. As the oil level rises within the mounting housing, the piston rod slides upward until it drives the lower deflection wedge to press against the upper deflection wedge, causing the sliding rod to rotate 90 degrees in the opposite direction. This resets the deflection plate, resealing the oil supply pipe. The piston rod accurately detects the oil level within the mounting housing, and the steering component precisely controls the sealing of the oil supply pipe, achieving accurate oil injection. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the oil injection structure of the present invention; Figure 3 This is a schematic diagram showing the connection between the control structure and the transmission structure of the present invention; Figure 4 This is a cross-sectional view of the control structure of the present invention; Figure 5 This is a cross-sectional view of the valve assembly of the present invention; Figure 6 This is an exploded view of the interceptor plate of the present invention; Figure 7 This is a schematic diagram of the steering component connection of the present invention; Figure 8 This is a schematic diagram of the transmission structure connection of the present invention; Figure 9 This is a schematic diagram showing the connection between the mounting block and the limiting block of the present invention; Figure 10 This is a schematic diagram of the internal structure of the isolation result of the present invention; Figure 11 This is an exploded view of the limiting sliding shaft and the isolation sliding plate of the present invention.

[0017] In the diagram: 1. Install the housing; 2. Oil filling structure; 21. Mounting bracket; 22. Oil storage tank; 23. Oil delivery pipe; 24. Oil filling pipe; 3. Control structure; 31. Connecting tube; 32. Piston rod; 33. Pressure spring; 34. Lower sliding tube; 35. Upper sliding tube; 36. Valve assembly; 361. Valve pipe; 362. Isolation block; 363. Interceptor plate; 364. Extrusion block; 365. Spring plate; 366. Connecting hole; 37. Steering rod; 38. Steering assembly; 381. Sliding rod; 382. Lower steering slider; 383. Upper steering slider; 384. Lower deflection wedge; 385. Mounting plate; 386. Upper deflection wedge; 4. Transmission structure; 41. Corresponding crank; 42. Pressing slider; 43. Limiting slide rod; 44. Return spring; 45. Mounting block; 46. Limiting block; 47. Limiting spring; 5. Isolation structure; 51. Sliding extension rod; 52. Transmission block; 53. Limiting sliding shaft; 54. Sealing block; 55. Isolation sliding plate; 56. Compression spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below 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.

[0019] like Figures 1 to 9 As shown, the present invention provides a precise oil injection device for an extruder gearbox, including a mounting housing 1, an oil injection structure 2 and an adjustment structure 3 mounted on the mounting housing 1, an isolation structure 5 slidably connected inside the mounting housing 1, and a corresponding crank 4 installed between the adjustment structure 3 and the isolation structure 5. The oil injection structure 2 includes a mounting frame 21 installed outside the mounting housing 1, an oil storage tank 22 installed inside the mounting frame 21, an oil delivery pipe 23 installed on the oil storage tank 22, and an oil injection pipe 24 installed on the oil delivery pipe 23. The control structure 3 includes a connecting pipe 31 connected to the mounting housing 1, a piston rod 32 slidably connected inside the connecting pipe 31, a lower sliding pipe 34 installed on the connecting pipe 31, and a valve assembly 36 slidably connected to the piston rod 32.

[0020] Using the above method: the mounting housing 1 and the connecting pipe 31 are connected, and the piston rod 32, which slides within the connecting pipe 31, works in conjunction with the principle of a communicating vessel to make the liquid level in the connecting pipe 31 and the liquid level in the mounting housing 1 level. This causes the piston rod 32 to slide up and down as the liquid level in the mounting housing 1 changes. The height of the piston rod 32 controls the valve assembly 36, which in turn regulates the connection state of the oil delivery pipe 23. When the lubricating oil level in the mounting housing 1 drops to a certain level, the liquid level in the connecting pipe 31, which is connected to the mounting housing 1, decreases, causing the piston rod 32 to slide downwards. This, in turn, regulates the valve assembly 36 to deliver oil. Pipe 23 is switched to a connected state, allowing the lubricating oil in the oil storage tank 22 to be injected into the mounting housing 1 through the oil supply pipe 23 and the oil injection pipe 24. As the lubricating oil level in the mounting housing 1 rises to the qualified position, the piston rod 32 slides up to the highest position, thereby driving the valve assembly 36 to switch the oil supply pipe 23 to an isolated state, blocking the lubricating oil in the oil storage tank 22 from continuing to be injected into the mounting housing 1. At the same time, when the piston rod 32 slides up to the highest position, the isolation structure 5 closes the lower pipe of the oil injection pipe 24 through the connection of the transmission structure 4, preventing the lubricating oil in the mounting housing 1 from atomizing and entering the oil injection pipe 24 during use.

[0021] like Figures 1 to 4 As shown, the oil injection pipe 24 is installed inside the mounting housing 1, and the oil delivery pipe 23 has a through hole with the same inner diameter as the lower sliding pipe 34. The valve assembly 36 is installed inside the oil delivery pipe 23.

[0022] Using the above method: by installing a valve assembly 36 inside the oil supply pipe 23, the connection state at both ends of the oil supply pipe 23 is adjusted, and by opening a through hole on the oil supply pipe 23 that is consistent with the inner diameter of the lower sliding pipe 34, the piston rod 32 slides up and down inside the lower sliding pipe 34, the oil supply pipe 23 and the valve assembly 36.

[0023] like Figures 4 to 6 As shown, a pressure spring 33 is provided around the piston rod 32 between the connecting pipe 31 and the piston rod 32. An upper sliding pipe 35 is installed on the oil injection pipe 24 corresponding to the lower sliding pipe 34. The size of the upper sliding pipe 35 is the same as that of the lower sliding pipe 34.

[0024] The valve assembly 36 includes a valve tube 361 installed in the oil injection pipe 24, an isolation block 362 installed on the lower side of the valve tube 361, an interceptor plate 363 slidably connected to the isolation block 362, a connecting hole 366 on the valve tube 361 connecting the valve tube 361 and the oil injection pipe 24, a squeezing block 364 slidably connected inside the interceptor plate 363, and a spring sheet 365 provided between the squeezing block 364 and the interceptor plate 363.

[0025] The above method is adopted: by setting a pressure spring 33 between the connecting pipe 31 and the piston rod 32, the spring force of the pressure spring 33 causes the piston rod 32 to press down on the lubricating oil level in the connecting pipe 31, so that the lubricating oil level in the piston rod 32 is slightly lower than the lubricating oil level in the mounting housing 1, so as to accommodate the time when the piston rod 32 slides up and down and drives the interceptor plate 363 to rotate, thereby timely and accurately injecting lubricating oil into the mounting housing 1 according to the state of the lubricating oil level in the mounting housing 1.

[0026] By using a spring plate 365 between the extrusion block 364 and the interceptor plate 363, the interceptor plate 363 and the extrusion block 364 slide in opposite directions due to the elastic force of the spring plate 365. This causes the extrusion block 364 to adhere to the piston rod 32, and the interceptor plate 363 to adhere to the inner wall of the valve pipe 361. As the piston rod 32 slides up and down, the interceptor plate 363 remains relatively stable, thus ensuring the stability of the sealing state formed by the interceptor plate 363 and the valve pipe 361. When the piston rod 32 slides up and down to its limit position, it drives the interceptor plate 363 to rotate, thereby regulating the sealing state between the interceptor plate 363 and the valve pipe 361.

[0027] like Figure 5 and Figure 7 As shown, a steering rod 37 is mounted on the upper side of the piston rod 32. The steering rod 37 is slidably connected to the interceptor plate 363. The steering rod 37 and the deflection through hole on the interceptor plate 363 have the same size. A steering assembly 38 is mounted on the upper side of the upper sliding tube 35.

[0028] The steering assembly 38 includes a sliding rod 381 that is slidably connected through an upper sliding tube 35. A lower steering slider 382 is slidably connected to the sliding rod 381, and an upper steering slider 383 is slidably connected to the sliding rod 381. A lower deflection wedge 384 that is pressed and engaged with the lower steering slider 382 is installed on the upper sliding tube 35. An mounting plate 385 is installed on the upper sliding tube 35, and an upper deflection wedge 386 that is pressed and engaged with the upper steering slider 383 is installed on the mounting plate 385.

[0029] The angle between the lower deflection wedge block 384 and the upper deflection wedge block 386 is 90 degrees. The lower end of the sliding rod 381 is installed at the upper end of the upper sliding tube 35. The angle between the upper steering slider 383 and the lower steering slider 382 is 90 degrees.

[0030] Using the above method: the steering rod 37 installed on the piston rod 32 has the same size as the deflection through hole on the interceptor plate 363, and the steering rod 37 slides in the interceptor plate 363. When the steering rod 37 slides down with the piston rod 32 until the steering rod 37 enters the deflection through hole on the interceptor plate 363, it works in conjunction with the steering assembly 38 to drive the piston rod 32 to deflect, so that the interceptor plate 363 rotates synchronously with the rotation of the steering rod 37.

[0031] The piston rod 32 drives the sliding rod 381 to slide up and down. The sliding groove on the sliding rod 381 cooperates with the lower deflection wedge block 384 to keep the lower steering slider 382 stable until the sliding rod 381 slides to a certain extent, that is, the liquid level in the mounting housing 1 drops to the point where lubricating oil needs to be injected into the mounting housing 1. Then, it is squeezed by the sliding rod 381, which makes the lower steering slider 382 press down on the lower deflection wedge block 384. Then, through the interaction of the wedge-shaped surfaces of the lower steering slider 382 and the lower deflection wedge block 384, the sliding rod 381 rotates 90 degrees, which at the same time drives the piston rod 32 to rotate 90 degrees, and then drives the interceptor plate 363 to rotate 90 degrees.

[0032] As the lubricating oil in the oil storage tank 22 is injected into the mounting housing 1, the piston rod 32 drives the sliding rod 381 to slide upward. Similarly, through the compression of the sliding rod 381 and the cooperation between the upper steering slider 383 and the wedge surface of the upper deflection wedge block 386, the sliding rod 381 rotates back ninety degrees, thereby driving the steering rod 37 and the intercepting plate 363 to rotate back ninety degrees. After the liquid level in the mounting housing 1 reaches the standard, the oil supply pipe 23 is closed, and no more lubricating oil is injected into the mounting housing 1, so as to achieve the effect of precise control of the oil injection volume.

[0033] like Figure 8 and 9 As shown, the transmission structure 4 includes a corresponding crank 41 mounted on the sliding rod 381, a limiting slide rod 43 mounted on the corresponding crank 41, a compression slider 42 slidably connected through the corresponding crank 41, a return spring 44 arranged around the limiting slide rod 43 between the compression slider 42 and the corresponding crank 41, an installation block 45 mounted on the oil pipe 23, a limiting block 46 slidably connected on the installation block 45, a limiting spring 47 arranged between the installation block 45 and the limiting block 46, and the limiting block 46 and the compression slider 42 are in compression engagement.

[0034] Using the above method: the sliding rod 381 slides, thereby driving the corresponding crank 41 to slide synchronously. The corresponding crank 41 squeezes the squeezing slider 42 to slide downward, thereby causing the squeezing slider 42 to slide and squeeze against the limiting block 46, thus squeezing the slider 42 into the limiting block 46. The corresponding sliding rod 381 slides to the lowest position. When the sliding rod 381 slides upward, it drives the corresponding crank 41 to slide upward. The squeezing slider 42 is limited by the limiting block 46 and remains stationary. When the corresponding crank 41 slides to the initial position, it is squeezed by the elastic force of the return spring 44, causing the squeezing slider 42 to break through the limitation of the limiting block 46, thereby causing the squeezing slider 42 and the sliding extension rod 51 to return to their original positions under the elastic force of the return spring 44.

[0035] like Figure 10 and Figure 11 As shown, the isolation structure 5 includes a sliding extension rod 51 that slides within the oil injection pipe 24. The sliding extension rod 51 is fixedly connected to the extrusion slider 42. A transmission block 52 is installed on the outer contour of the sliding extension rod 51. A limiting sliding shaft 53 is installed within the oil injection pipe 24. A symmetrically distributed sealing block 54 is installed on the limiting sliding shaft 53. The lower end face of the sealing block 54 is higher than the lower end face of the limiting sliding shaft 53. An isolation sliding plate 55 is slidably connected to the limiting sliding shaft 53 and the sealing block 54. An extrusion spring 56 is provided between the isolation sliding plate 55 and the limiting sliding shaft 53, surrounding the limiting sliding shaft 53 and the sealing block 54.

[0036] Using the above method: a transmission structure 4 is set between the sliding extension rod 51 and the sliding rod 381 for connection. The sliding extension rod 51 is driven to slide up and down by the sliding rod 381. The transmission block 52 moves synchronously by the sliding extension rod 51. When the piston rod 32 and the sliding rod 381 slide down to the limit position, the sliding extension rod 51 and the transmission block 52 slide down to press the isolation sliding plate 55 along the limit sliding shaft 53 and the sealing block 54 until the isolation sliding plate 55 slides to separate from the sealing block 54. At this time, the corresponding sliding rod 381 slides down to the limit position, and the lubricating oil in the oil supply pipe 23 flows into the mounting housing 1 through the gap between the sealing block 54 and the isolation sliding plate 55.

[0037] When the lubricating oil in the mounting housing 1 reaches the appropriate level, the sliding rod 381 drives the corresponding crank 41 to slide synchronously. This, in conjunction with the elastic force of the return spring 44, releases the limit block 46 from the compression slider 42, causing the compression slider 42 and the sliding extension rod 51 to slide upwards and reset. This releases the compression of the isolation sliding plate 55 by the sliding extension rod 51 and the transmission block 52. Under the elastic force of 56, the isolation sliding plate 55 slides upwards and resets, sealing the oil injection pipe 24 with the mounting housing 1 and preventing impurities generated during the operation of the mounting housing 1 from entering the oil injection pipe 24.

[0038] The present invention also provides a method for precise oil injection into an extruder gearbox, comprising the following steps: S1. The piston rod 32 is connected to the bottom of the mounting housing 1 through the connecting pipe 31. The height of the piston rod 32 in the connecting pipe 31 indicates the height of the lubricating oil level in the mounting housing 1. The height of the piston rod 32 indicates the lubricating oil content in the mounting housing 1. As the mounting housing 1 is used, the lubricating oil is consumed. The piston rod 32 gradually slides down to the lowest position. The sliding rod 381 then presses the lower steering slider 382 and cooperates with the lower deflection wedge block 384 to make the piston rod 32 rotate 90 degrees. At the same time, the steering rod 37 drives the intercepting plate 363 to rotate 90 degrees, so that the intercepting plate 363 is connected to the oil supply pipe 23, allowing the lubricating oil in the oil storage tank 22 to be injected into the mounting housing 1. S2. By sliding the sliding rod 381 up and down, the corresponding crank 41 slides synchronously, which in turn squeezes the squeezing slider 42 and the sliding extension rod 51 to slide down synchronously until the squeezing slider 42 squeezes the limiting block 46, causing the limiting block 46 to slide towards the mounting block 45, until the squeezing slider 42 slides to the lower side of the limiting block 46. When the sliding rod 381 slides up, it drives the corresponding crank 41 to slide synchronously, while the squeezing slider 42 is kept stationary by the limiting block 46 until the corresponding crank 41 slides to its original position, so that the elastic force of the return spring 44 reaches its maximum, and the squeezing slider 42 breaks through the limitation of the limiting block 46 and returns to its original position together with the sliding extension rod 51. S3. By sliding the extension rod 51 up and down, the transmission block 52 is driven to slide synchronously. Then, the transmission block 52 presses the isolation sliding plate 55 to slide downward. Since the lower end face of the sealing block 54 is higher than the lower end face of the limiting sliding shaft 53, the sealing state between the isolation sliding plate 55, the limiting sliding shaft 53, and the sealing block 54 is released, so that the oil injection pipe 24 is connected to the inside of the mounting housing 1, and the lubricating oil in the oil storage tank 22 is injected into the mounting housing 1. When the extension rod 51 is reset upward, 56 presses the isolation sliding plate 55 to reset.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precision oil injection device for an extruder gearbox, comprising a mounting housing (1), wherein an oil injection structure (2) and a regulating structure (3) are mounted on the mounting housing (1), an isolation structure (5) is slidably connected inside the mounting housing (1), and a co-positioned crank (4) is installed between the regulating structure (3) and the isolation structure (5), characterized in that: in, The oil injection structure (2) includes a mounting frame (21) installed outside the mounting housing (1), an oil storage tank (22) installed inside the mounting frame (21), an oil delivery pipe (23) installed on the oil storage tank (22), and an oil injection pipe (24) installed on the oil delivery pipe (23). The control structure (3) includes a connecting pipe (31) connected to the mounting housing (1), a piston rod (32) is slidably connected inside the connecting pipe (31), a lower sliding pipe (34) is installed on the connecting pipe (31), and a valve assembly (36) is slidably connected to the piston rod (32).

2. The precision oil injection device for the extruder gearbox according to claim 1, characterized in that: The oil injection pipe (24) is installed through the mounting housing (1), and the oil delivery pipe (23) has a through hole with the same inner diameter as the lower sliding pipe (34). The valve assembly (36) is installed inside the oil delivery pipe (23).

3. The precision oiling device for the extruder gearbox according to claim 1, characterized in that: A pressure spring (33) is provided around the piston rod (32) between the connecting pipe (31) and the piston rod (32). An upper sliding pipe (35) is installed on the oil injection pipe (24) corresponding to the lower sliding pipe (34). The size of the upper sliding pipe (35) is the same as that of the lower sliding pipe (34).

4. The precision oiling device for the extruder gearbox according to claim 3, characterized in that: The valve assembly (36) includes a valve tube (361) installed in the oil injection pipe (24), an isolation block (362) installed on the lower side of the valve tube (361), an interceptor plate (363) slidably connected to the isolation block (362), a connecting hole (366) connecting the valve tube (361) and the oil injection pipe (24) is provided on the valve tube (361), an extrusion block (364) slidably connected inside the interceptor plate (363), and a spring sheet (365) is provided between the extrusion block (364) and the interceptor plate (363).

5. The precision oiling device for the extruder gearbox according to claim 4, characterized in that: A steering rod (37) is installed on the upper side of the piston rod (32). The steering rod (37) is slidably connected to the interceptor plate (363). The steering rod (37) and the deflection through hole opened on the interceptor plate (363) have the same size. A steering assembly (38) is installed on the upper side of the upper sliding tube (35).

6. The precision oiling device for the extruder gearbox according to claim 5, characterized in that: The steering assembly (38) includes a sliding rod (381) that is slidably connected through an upper sliding tube (35), a lower steering slider (382) that is slidably connected to the sliding rod (381), an upper steering slider (383) that is slidably connected to the sliding rod (381), a lower deflection wedge (384) that is pressed against the lower steering slider (382) that is mounted on the upper sliding tube (35), an mounting plate (385) that is mounted on the mounting plate (385) that is pressed against the upper steering slider (383) that is mounted on the mounting plate (385) that is pressed against the upper steering slider (383) that is mounted on the mounting plate (385).

7. The precision oiling device for the extruder gearbox according to claim 6, characterized in that: The angle between the lower deflection wedge (384) and the upper deflection wedge (386) is 90 degrees. The lower end of the sliding rod (381) is installed on the upper end of the upper sliding tube (35). The angle between the upper steering slider (383) and the lower steering slider (382) is 90 degrees.

8. The precision oiling device for the extruder gearbox according to claim 6, characterized in that: The transmission structure (4) includes a corresponding crank (41) mounted on a sliding rod (381), a limiting slide rod (43) mounted on the corresponding crank (41), a compression slider (42) slidably connected through the corresponding crank (41), a return spring (44) arranged around the limiting slide rod (43) between the compression slider (42) and the corresponding crank (41), an mounting block (45) mounted on the oil pipe (23), a limiting block (46) slidably connected on the mounting block (45), a limiting spring (47) arranged between the mounting block (45) and the limiting block (46), and the limiting block (46) and the compression slider (42) are in compression engagement.

9. The precision oiling device for the extruder gearbox according to claim 1, characterized in that: The isolation structure (5) includes a sliding extension rod (51) that slides inside an oil injection pipe (24). The sliding extension rod (51) is fixedly connected to a compression slider (42). A transmission block (52) is installed on the outer contour of the sliding extension rod (51). A limiting sliding shaft (53) is installed inside the oil injection pipe (24). A symmetrically distributed sealing block (54) is installed on the limiting sliding shaft (53). The lower end face of the sealing block (54) is higher than the lower end face of the limiting sliding shaft (53). An isolation sliding plate (55) is slidably connected to the limiting sliding shaft (53) and the sealing block (54). A compression spring (56) is provided between the isolation sliding plate (55) and the limiting sliding shaft (53) and around the sealing block (54).

10. A method for precise oiling of an extruder gearbox, applied to a precise oiling device for an extruder gearbox as described in any one of claims 1-9, characterized in that: Includes the following steps: S1. The connecting pipe (31) is connected to the bottom of the mounting housing (1). The height of the piston rod (32) in the connecting pipe (31) indicates the height of the lubricating oil level in the mounting housing (1). The height of the piston rod (32) indicates the lubricating oil content in the mounting housing (1). As the mounting housing (1) is used, the lubricating oil is consumed. The piston rod (32) gradually slides down to the lowest position. The sliding rod (381) presses the lower steering slider (382) and cooperates with the lower deflection wedge (384) to make the piston rod (32) rotate 90 degrees. At the same time, the steering rod (37) drives the interceptor plate (363) to rotate 90 degrees, so that the interceptor plate (363) is connected to the oil supply pipe (23), so that the lubricating oil in the oil storage tank (22) is injected into the mounting housing (1). S2. By sliding the sliding rod (381) up and down, the corresponding crank (41) slides synchronously, which in turn squeezes the squeezing slider (42) and the sliding extension rod (51) down synchronously until the squeezing slider (42) squeezes the limiting block (46) so that the limiting block (46) slides towards the mounting block (45) until the squeezing slider (42) slides to the lower side of the limiting block (46). When the sliding rod (381) slides up, it drives the corresponding crank (41) to slide synchronously. The squeezing slider (42) is kept still by the limiting block (46) until the corresponding crank (41) slides to its original position, so that the elastic force of the return spring (44) reaches its maximum, which causes the squeezing slider (42) to break through the limiting block (46) and return to its original position together with the sliding extension rod (51). S3. By sliding the extension rod (51) up and down, the transmission block (52) is driven to slide synchronously, and then the transmission block (52) squeezes the isolation sliding plate (55) to slide downward. Since the lower end face of the sealing block (54) is higher than the lower end face of the limiting sliding shaft (53), the sealing state between the isolation sliding plate (55), the limiting sliding shaft (53), and the sealing block (54) is released, so that the oil injection pipe (24) is connected to the mounting housing (1), and then the lubricating oil in the oil storage tank (22) is injected into the mounting housing (1). When the extension rod (51) is reset upward, (56) squeezes the isolation sliding plate (55) to reset.

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