A metering valve device for a bearing

Abstract

The utility model relates to bearing processing technical field, the utility model provides a quantitative grease injection valve device for bearing, it includes frame, the top front side fixed connection of frame has operating table, bearing self -adaptation pressure positioning subassembly, bearing self -adaptation pressure positioning subassembly sets up in the upper and lower both sides of operating table, grease injection head alignment subassembly, grease injection head alignment subassembly sets up in the just above of bearing self -adaptation pressure positioning subassembly, grease preheating delivery subassembly, grease preheating delivery subassembly sets up in the left side of grease injection head alignment subassembly. Through above -mentioned technical scheme, solved the technical problem of the prior art in view of different specifications bearing need manual replacement or adjustment positioning tool, difficult accurate control strength, grease injection head position fixed, easy to lead to grease injection deviate ball pocket, in low temperature environment or use high viscosity grease, grease is easy because of the lack of flowability leads to delivery pipeline, grease injection head block, reduce the overall production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of bearing processing technology, specifically to a quantitative grease injection valve device for bearings. Background Technology

[0002] Bearings are an important component of modern mechanical equipment. Based on their friction properties, bearings can be divided into two main categories: sliding bearings and rolling bearings. Rolling bearings generally consist of an inner ring, an outer ring, balls, and a cage. To ensure good transmission performance and a long service life, grease is usually injected between the inner and outer rings of rolling bearings for proper lubrication.

[0003] Existing technologies lack adaptive positioning capabilities, requiring manual replacement or adjustment of positioning fixtures for bearings of different specifications. This increases changeover time and labor costs, making it difficult to meet the needs of multi-variety, small-batch production. Furthermore, manual adjustment of clamping force is difficult to control precisely, potentially leading to bearing deformation and surface indentation due to excessive clamping, or bearing displacement during grease injection due to insufficient clamping. Additionally, the fixed position of the grease injection head in existing technologies cannot adapt to bearing installation deviations or specification changes, easily causing grease injection to deviate from the ball pocket, resulting in lubrication failure or contamination of other parts of the bearing. Moreover, in low-temperature environments or when using high-viscosity grease, insufficient grease flow can cause blockages in the delivery pipeline and grease injection head, requiring frequent shutdowns for cleaning, affecting production continuity and reducing overall production efficiency. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a quantitative grease injection valve device for bearings, which solves the technical problems in the prior art where the positioning fixture needs to be manually replaced or adjusted for bearings of different specifications, and it is difficult to accurately control the force when manually adjusting the clamping force; the grease injection head position is fixed and cannot adapt to bearing installation deviations or specification changes, which can easily cause the grease to be injected off the ball pocket; and in low temperature environments or when using high viscosity grease, the grease is prone to blockage of the delivery pipeline and grease injection head due to insufficient fluidity, which reduces the overall production efficiency.

[0005] According to one aspect, at least one embodiment of the present invention provides a metering grease injection valve device for bearings, comprising: The frame has four fixed legs at its bottom corners, a controller is fixedly connected to the front side of the frame, and an operating table is fixedly connected to the front top side of the frame. A bearing adaptive pressure positioning assembly is provided on the upper and lower sides of the operating table. The bearing adaptive pressure positioning assembly is used to perform pressure adaptive positioning of the bearing. The grease injection head alignment component is located directly above the bearing adaptive pressure positioning component. The grease injection head alignment component is used to calibrate and align the grease injection head with the bearing ball pocket position. A grease preheating and delivery assembly is located on the left side of the grease injection head alignment assembly. The grease preheating and delivery assembly is used to preheat the grease, reduce its viscosity, and improve the grease injection efficiency.

[0006] For example, in a quantitative grease injection valve device for bearings provided in at least one embodiment of the present invention, the bearing adaptive pressure positioning component includes an electric telescopic rod, which is fixedly connected to the bottom center of the operating table. A lifting block is fixedly connected to the telescopic end of the electric telescopic rod. Four rectangular connecting rods are rotatably connected to the side wall of the lifting block. A cross slider is rotatably connected to the top of each of the four connecting rods. Four rectangular cross grooves are provided on the top of the operating table and are slidably connected to the outer wall of the cross slider.

[0007] For example, in a quantitative grease injection valve device for bearings provided in at least one embodiment of the present invention, a bearing placement plate is fixedly connected to the top center of the operating table, the tops of the four cross sliders all extend through to the top of the operating table and are fixedly connected to arc-shaped clamping blocks, and pressure sensors are fixedly connected to the clamping arc surfaces of the four arc-shaped clamping blocks, and the controller is electrically connected to the electric telescopic rod and the pressure sensors respectively.

[0008] For example, in at least one embodiment of the present invention, a quantitative grease injection valve device for bearings is provided, wherein the grease injection head alignment assembly includes a fixed frame, the rear side of the fixed frame is fixedly connected to a machine frame, a lead screw is rotatably connected to the inner walls of the upper and lower sides of the fixed frame, a motor is fixedly connected to the top of the fixed frame, the output end of the motor passes through the interior of the fixed frame and is fixedly connected to the lead screw, and slide rods are provided on both the left and right sides of the lead screw and fixedly connected to the inner walls of the fixed frame, and a movable seat is threadedly connected to the outer wall of the lead screw and slidably connected to the outer walls of the two slide rods, and a cross plate is fixedly connected to the front side of the movable seat.

[0009] For example, in a quantitative grease injection valve device for bearings provided in at least one embodiment of this utility model, a quantitative valve is fixedly connected to the top of the horizontal plate, two side plates are fixedly connected to the bottom of the horizontal plate, a worm gear is rotatably connected to the opposite surfaces of the front and rear side plates, a second motor is fixedly connected to the front side wall of the front side plate, the output end of the second motor passes through to the rear side wall of the front side plate and is fixedly connected to the worm gear, a worm wheel is meshed with the left side of the worm gear, a hollow rotating rod is fixedly connected to the inner wall of the worm wheel, the top of the hollow rotating rod is rotatably connected to the oil outlet at the bottom of the quantitative valve through a sealed bearing, and a grease injection head is detachably fixedly connected to the bottom of the hollow rotating rod.

[0010] For example, in a quantitative grease injection valve device for bearings provided in at least one embodiment of the present invention, a fixed rod is rotatably connected to the bottom of the outer wall of the hollow rotating rod, and an optical fiber sensor is fixedly connected to the end of the fixed rod away from the hollow rotating rod. The controller is electrically connected to motor one, quantitative valve, motor two, and optical fiber sensor respectively.

[0011] For example, in at least one embodiment of the present invention, a quantitative grease injection valve device for bearings is provided, wherein the grease preheating and conveying assembly includes a conveying cylinder fixing frame, the conveying cylinder fixing frame is fixedly connected to the left side of the horizontal plate, a conveying cylinder is fixedly connected to the top of the conveying cylinder fixing frame, the right end of the conveying cylinder is fixedly connected to the oil inlet of the quantitative valve, a feed hopper communicating with the inside of the conveying cylinder is fixedly connected to the top of the outer wall of the conveying cylinder, an auger is rotatably connected to the inside of the conveying cylinder, a motor is fixedly connected to the left side of the conveying cylinder, and the output end of the motor extends through the inside of the conveying cylinder and is fixedly connected to the auger.

[0012] For example, in a quantitative grease injection valve device for bearings provided in at least one embodiment of the present invention, a heating plate is uniformly fixedly connected inside the conveying cylinder, a temperature sensor is fixedly connected to the inner wall of the conveying cylinder, and the controller is electrically connected to the motor, the heating plate, and the temperature sensor respectively.

[0013] The beneficial effects of the embodiments of this utility model are as follows: In this invention, the adaptive pressure positioning component for bearings can position bearings of different sizes within a certain range, enabling them to automatically adapt to bearings of different outer diameters, improving equipment versatility, and reducing adjustment time when changing bearing models. Simultaneously, a pressure sensor monitors the clamping force in real time, automatically stopping the clamping action when a preset pressure threshold is reached. This effectively prevents deformation of the bearing outer ring, surface scratches, or internal structural damage due to excessive clamping force, or instability due to insufficient clamping force. The grease injection head alignment component allows adjustment of the grease injection head's height and rotation angle, ensuring precise alignment with the bearing ball bearing position and preventing grease from being injected into non-target areas (such as bearing rollers or outer rings), guaranteeing that all grease enters the preset lubrication point. The grease preheating and delivery component effectively reduces grease viscosity, enhancing its fluidity and allowing for smoother passage through the delivery pipeline and grease injection head. This avoids delivery blockages or discontinuous grease injection caused by viscous grease. Lower viscosity grease experiences less resistance during delivery and injection, and combined with the auger delivery structure, achieves faster and more stable grease delivery, improving grease injection efficiency. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present invention; Figure 2 This is a schematic diagram of the bearing adaptive pressure positioning component of this utility model; Figure 3 This is a schematic diagram of the bearing adaptive pressure positioning component of this utility model from an elevation view. Figure 4 This is a schematic diagram of the grease injection head alignment assembly of this utility model; Figure 5 This is another structural schematic diagram of the grease injection head alignment assembly of this utility model; Figure 6 This is a schematic diagram of the structure of the grease preheating and conveying assembly of this utility model.

[0016] In the diagram: 1. Frame; 10. Support leg; 11. Controller; 12. Operating table; 2. Bearing adaptive pressure positioning assembly; 20. Electric telescopic rod; 21. Lifting block; 22. Connecting rod; 23. Cross slider; 24. Arc-shaped clamp; 25. Cross groove; 26. Pressure sensor; 27. Bearing placement plate; 3. Grease head alignment assembly; 30. Fixing frame; 31. Lead screw; 32. Slide rod; 33. Motor 1; 34. Moving seat; 35. Horizontal plate; 36. Metering valve; 37. Side plate; 38. Worm gear; 39. Motor 2; 310. Worm wheel; 311. Hollow rotating rod; 312. Grease head; 313. Fixing rod; 314. Fiber optic sensor; 4. Grease preheating and conveying assembly; 40. Conveying cylinder fixing frame; 41. Conveying cylinder; 42. Feed hopper; 43. Screw; 44. Motor 3; 45. Heating plate. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0018] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0019] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] like Figures 1-3 As shown, it illustrates a quantitative grease injection valve device for bearings according to an embodiment of the present invention, comprising: The frame 1 has four fixed support legs 10 at the bottom corners, a controller 11 is fixedly connected to the front side of the frame 1, and an operating table 12 is fixedly connected to the top front side of the frame 1. The bearing adaptive pressure positioning component 2 is installed on the upper and lower sides of the operating table 12. The bearing adaptive pressure positioning component 2 is used to perform pressure adaptive positioning of the bearing. Grease injection head alignment component 3 is located directly above bearing adaptive pressure positioning component 2. Grease injection head alignment component 3 is used to calibrate and align the grease injection head with the bearing ball pocket position. The grease preheating and delivery component 4 is located on the left side of the grease injection head alignment component 3. The grease preheating and delivery component 4 is used to preheat the grease, reduce the viscosity of the grease, and improve the grease injection efficiency.

[0024] In some embodiments, the frame 1 is welded from Q235 steel plate, and the front side of the frame 1 is fixedly connected to the controller 11 by screws. The controller 11 is a Siemens S7-1200 series PLC. The top front side of the frame 1 is fixedly connected to the operating table 12 by welding. The operating table 12 is processed from 45 steel plate.

[0025] The bearing adaptive pressure positioning assembly 2 includes an electric telescopic rod 20, which is fixedly connected to the bottom center of the operating table 12. The telescopic end of the electric telescopic rod 20 is fixedly connected to a lifting block 21. The side wall of the lifting block 21 is rotatably connected to four rectangularly distributed connecting rods 22. The top of each of the four connecting rods 22 is rotatably connected to a cross slider 23. The top of the operating table 12 has four rectangularly distributed cross grooves 25 that are slidably connected to the outer wall of the cross slider 23.

[0026] A bearing placement plate 27 is fixedly connected to the top center of the operating table 12. The tops of the four cross sliders 23 all extend to the top of the operating table 12 and are fixedly connected to arc-shaped clamping blocks 24. Pressure sensors 26 are fixedly connected to the clamping arc surfaces of the four arc-shaped clamping blocks 24. The controller 11 is electrically connected to the electric telescopic rod 20 and the pressure sensors 26 respectively.

[0027] In some examples, the electric telescopic rod 20 uses an electric push rod of model DTZ300. The telescopic end of the electric telescopic rod 20 is fixedly connected to a lifting block 21 via a coupling. The lifting block 21 is made of aluminum alloy. The side wall of the lifting block 21 is rotatably connected to four rectangular connecting rods 22 via pins. The connecting rods 22 are made of No. 45 steel. The top of each of the four connecting rods 22 is rotatably connected to a cross slider 23 via a pin. The cross slider 23 is made of wear-resistant cast iron. The surface of the bearing placement plate 27 is covered with a rubber anti-slip pad. The top of each of the four cross sliders 23 extends to the top of the operating table 12 and is fixedly connected to an arc-shaped clamping block 24 via bolts. The arc-shaped clamping block 24 is made of engineering plastic and its curvature matches the outer diameter of commonly used bearings. The clamping arc surfaces of the four arc-shaped clamping blocks 24 are fixedly connected to pressure sensors 26 via screws. The pressure sensors 26 are PT124G-111 thin-film pressure sensors. The controller 11 is electrically connected to the electric telescopic rod 20 and the pressure sensors 26 via wires.

[0028] When bearing positioning is required, firstly, after receiving a start signal, the controller 11 drives the electric telescopic rod 20 to retract, causing the lifting block 21 to move upward. Simultaneously, the four connecting rods 22 pull the cross slider 23 outward along the cross groove 25, causing the arc-shaped clamping block 24 to open. The operator places the bearing to be greased on the bearing placement plate 27. Then, the electric telescopic rod 20 extends in the opposite direction, pushing the lifting block 21 downward. The connecting rods 22 push the cross slider 23 towards the center, and the arc-shaped clamping block 24 gradually clamps the outer ring of the bearing. The pressure sensor 26 collects clamping pressure data in real time and transmits it to the controller 11. When the pressure... When the force reaches the preset threshold, the controller 11 cuts off the power to the electric telescopic rod 20, completing the adaptive pressure positioning of the bearing. In this embodiment, the bearing adaptive pressure positioning component 2 can position bearings of different sizes within a certain range, enabling it to automatically adapt to bearings of different outer diameters, improving the equipment's versatility and reducing adjustment time when changing bearing models. At the same time, the pressure sensor 26 monitors the clamping force in real time, and automatically stops the clamping action when the preset pressure threshold is reached. This can effectively prevent the bearing outer ring from deforming, surface from scratching, or internal from being damaged due to excessive clamping force, or prevent the clamping from being unstable due to insufficient clamping force.

[0029] like Figures 4-5As shown, the grease injection head alignment component 3 is shown in another embodiment of the present invention. The grease injection head alignment component 3 includes a fixed frame 30. The rear side of the fixed frame 30 is fixedly connected to the frame 1. The upper and lower inner walls of the fixed frame 30 are rotatably connected to lead screws 31. The top of the fixed frame 30 is fixedly connected to a motor 33. The output end of the motor 33 passes through the interior of the fixed frame 30 and is fixedly connected to the lead screw 31. The left and right sides of the lead screw 31 are provided with slide rods 32 that are fixedly connected to the inner walls of the fixed frame 30. The outer wall of the lead screw 31 is threadedly connected to a movable seat 34 that is slidably connected to the outer walls of the two slide rods 32. The front side of the movable seat 34 is fixedly connected to a cross plate 35.

[0030] A metering valve 36 is fixedly connected to the top of the horizontal plate 35. Two side plates 37 are fixedly connected to the bottom of the horizontal plate 35. A worm gear 38 is rotatably connected to the opposite surfaces of the front and rear side plates 37. A motor 39 is fixedly connected to the front side wall of the front side plate 37. The output end of the motor 39 extends through to the rear side wall of the front side plate 37 and is fixedly connected to the worm gear 38. A worm wheel 310 is meshed with the left side of the worm gear 38. A hollow rotating rod 311 is fixedly connected to the inner wall of the worm wheel 310. The top of the hollow rotating rod 311 is rotatably connected to the oil outlet at the bottom of the metering valve 36 through a sealed bearing. A grease injection head 312 is detachably fixedly connected to the bottom of the hollow rotating rod 311.

[0031] A fixed rod 313 is rotatably connected to the bottom of the outer wall of the hollow rotating rod 311. A fiber optic sensor 314 is fixedly connected to the end of the fixed rod 313 away from the hollow rotating rod 311. The controller 11 is electrically connected to the motor 1 33, the metering valve 36, the motor 2 39, and the fiber optic sensor 314.

[0032] In some examples, the fixed frame 30 is welded from channel steel, and its rear side is fixedly connected to the frame 1 by bolts. The output end of motor 1 33 passes through the interior of the fixed frame 30 and is fixedly connected to the lead screw 31 by a coupling. A metering valve 36 is fixedly connected to the top of the cross plate 35 by bolts. The metering valve 36 is a DFA-25 electromagnetic metering valve. The output end of motor 2 39 passes through the rear side wall of the front side plate 37 and is fixedly connected to the worm gear 38 by a coupling. A hollow rotating rod 31 is fixedly connected to the inner wall of the worm wheel 310 by a key. 1. The top of the hollow rotating rod 311 is rotatably connected to the oil outlet at the bottom of the metering valve 36 via a sealed bearing. The bottom of the hollow rotating rod 311 is detachably fixed with a grease injection head 312 via a thread. The end of the fixed rod 313 away from the hollow rotating rod 311 is fixedly connected with a fiber optic sensor 314 via bolts. The fiber optic sensor 314 is a diffuse reflection type fiber optic sensor of model E3Z-LS63. The controller 11 is electrically connected to the motor 1 33, the metering valve 36, the motor 2 39, and the fiber optic sensor 314 via wires.

[0033] Controller 11 sends a pulse signal to motor 33, driving screw 31 to rotate, causing moving seat 34 to move downward along slide bar 32, bringing grease injection head 312 closer to the bearing. When grease injection head 312 reaches the detection position relative to the bearing surface, fiber optic sensor 314 starts working, emitting a laser beam to scan the bearing surface. By comparing the magnitude of the reflected signals from the ball pocket and non-ball pocket positions, alignment of grease injection head 312 with the bearing ball pocket is achieved. A position signal is generated by identifying the height difference between the ball pocket and the roller. After receiving the signal, controller 11 calculates the angular deviation and drives motor 39 to rotate. The worm gear 38 and worm wheel 310 mesh and drive the hollow rotating rod 311 and the grease injection head 312 to rotate until the grease injection head 312 is aligned with the center of the bearing ball pocket. At this time, the controller 11 stops the second motor 39 and controls the first motor 33 to continue driving the grease injection head 312 to move down to the grease injection working position. In this embodiment, the height and rotation angle of the grease injection head 312 can be adjusted by the grease injection head alignment component 3 to make it accurately aligned with the bearing ball pocket position, avoiding grease injection into non-target areas (such as bearing rollers or outer rings) and ensuring that all grease enters the preset lubrication point.

[0034] like Figure 6 As shown, this invention illustrates a grease preheating and conveying assembly 4 in another embodiment. The grease preheating and conveying assembly 4 includes a conveying cylinder fixing frame 40, which is fixedly connected to the left side of the horizontal plate 35. A conveying cylinder 41 is fixedly connected to the top of the conveying cylinder fixing frame 40. The right end of the conveying cylinder 41 is fixedly connected to the oil inlet of the metering valve 36. A feed hopper 42 communicating with the inside of the conveying cylinder 41 is fixedly connected to the top of the outer wall of the conveying cylinder 41. An auger 43 is rotatably connected inside the conveying cylinder 41. A motor 44 is fixedly connected to the left side of the conveying cylinder 41. The output end of the motor 44 passes through the inside of the conveying cylinder 41 and is fixedly connected to the auger 43.

[0035] Heating plates 45 are uniformly fixedly connected inside the conveying cylinder 41, and temperature sensors are fixedly connected to the inner wall of the conveying cylinder 41. The controller 11 is electrically connected to the motor 44, the heating plates 45, and the temperature sensors respectively.

[0036] In some embodiments, the conveying cylinder fixing frame 40 is fixedly connected to the left side of the horizontal plate 35 by bolts. The inside of the conveying cylinder 41 is rotatably connected to the auger 43 through bearings. The left side of the conveying cylinder 41 is fixedly connected to the motor 44 by bolts. The output end of the motor 44 passes through the inside of the conveying cylinder 41 and is fixedly connected to the auger 43 through a coupling. The inside of the conveying cylinder 41 is uniformly welded and fixedly connected to the heating plate 45. The inner wall of the conveying cylinder 41 is fixedly connected to the temperature sensor (not shown in the figure) by screws. The temperature sensor is a PT100 platinum resistance temperature sensor. The controller 11 is electrically connected to the motor 44, the heating plate 45 and the temperature sensor through wires.

[0037] The controller 11 preheats the heating plate 45 to the conveying cylinder 41. The temperature sensor monitors the grease temperature inside the cylinder in real time. When the temperature reaches the set value, the controller 11 maintains a constant temperature through PID regulation. After the grease injection command is triggered, the motor 44 starts and drives the auger 43 to rotate, breaking up the solid or high-viscosity grease in the feed hopper 42 and pushing it to the metering valve 36. During the pushing process, the grease is continuously heated by the heating plate 45, and the viscosity is reduced to a state suitable for grease injection. The grease preheating and conveying component 4 can effectively reduce the viscosity of the grease, making it more fluid and allowing it to pass through the conveying pipeline and grease injection head more smoothly. This avoids conveying blockage or discontinuous grease injection caused by grease viscosity. Low-viscosity grease has less resistance during conveying and injection. Combined with the auger conveying structure, it can achieve faster and more stable grease pushing and improve grease injection efficiency.

[0038] The controller 11 sends a command to the metering valve 36 according to the preset grease injection amount corresponding to the bearing model. The metering valve 36 opens its internal channel, and the preheated grease is injected into the bearing ball pocket through the inner cavity of the hollow rotating rod 311 from the grease injection head 312. When the grease injection amount reaches the set value, the metering valve 36 quickly closes the channel to complete the metered grease injection. Then, the motor 33 reverses to drive the grease injection head to move up and reset. The electric telescopic rod 20 retracts to release the arc-shaped clamp from the bearing. The operator removes the greased bearing, and the device enters the next working cycle.

[0039] The working principle and usage process of this utility model are as follows: First, after receiving the start signal, the controller 11 drives the electric telescopic rod 20 to retract, causing the lifting block 21 to move upward. Simultaneously, the four connecting rods 22 pull the cross slider 23 outward along the cross groove 25, causing the arc-shaped clamping block 24 to open. The operator places the bearing to be greased on the bearing placement plate 27. Then, the electric telescopic rod 20 extends in the opposite direction, pushing the lifting block 21 downward. Through the connecting rods 22, the cross slider 23 is pushed towards the center, and the arc-shaped clamping block 24 gradually clamps the outer ring of the bearing. The pressure sensor 26 collects the clamping pressure data in real time and transmits it to the controller 11. When the pressure value reaches the preset threshold, the controller 11 cuts off the power to the electric telescopic rod 20, completing the adaptive pressure positioning of the bearing. In this embodiment, the bearing adaptive pressure positioning component 2 can position bearings of different sizes within a certain range, enabling it to automatically adapt to bearings of different outer diameters, improving the equipment's versatility and reducing adjustment time when changing bearing models. At the same time, the pressure sensor 26 monitors the clamping force in real time, and automatically stops the clamping action when the preset pressure threshold is reached. This can effectively prevent the bearing outer ring from deforming, surface scratches, or internal structure damage due to excessive clamping force, or the clamping from being unstable due to insufficient clamping force.

[0040] Controller 11 sends a pulse signal to motor 33, driving screw 31 to rotate, causing moving seat 34 to move downward along slide bar 32, bringing grease injection head 312 closer to the bearing. When grease injection head 312 reaches the detection position relative to the bearing surface, fiber optic sensor 314 starts working, emitting a laser beam to scan the bearing surface. By comparing the magnitude of the reflected signals from the ball pocket and non-ball pocket positions, alignment of grease injection head 312 with the bearing ball pocket is achieved. A position signal is generated by identifying the height difference between the ball pocket and the roller. After receiving the signal, controller 11 calculates the angular deviation and drives motor 39 to rotate. The worm gear 38 and worm wheel 310 mesh and drive the hollow rotating rod 311 and the grease injection head 312 to rotate until the grease injection head 312 is aligned with the center of the bearing ball pocket. At this time, the controller 11 stops the second motor 39 and controls the first motor 33 to continue driving the grease injection head 312 to move down to the grease injection working position. In this embodiment, the height and rotation angle of the grease injection head 312 can be adjusted by the grease injection head alignment component 3 to make it accurately aligned with the bearing ball pocket position, avoiding grease injection into non-target areas (such as bearing rollers or outer rings) and ensuring that all grease enters the preset lubrication point.

[0041] The controller 11 preheats the heating plate 45 to the conveying cylinder 41. The temperature sensor monitors the grease temperature inside the cylinder in real time. When the temperature reaches the set value, the controller 11 maintains a constant temperature through PID regulation. After the grease injection command is triggered, the motor 44 starts and drives the auger 43 to rotate, breaking up the solid or high-viscosity grease in the feed hopper 42 and pushing it to the metering valve 36. During the pushing process, the grease is continuously heated by the heating plate 45, and the viscosity is reduced to a state suitable for grease injection. The grease preheating and conveying component 4 can effectively reduce the viscosity of the grease, making it more fluid and allowing it to pass through the conveying pipeline and grease injection head more smoothly. This avoids conveying blockage or discontinuous grease injection caused by grease viscosity. Low-viscosity grease has less resistance during conveying and injection. Combined with the auger conveying structure, it can achieve faster and more stable grease pushing and improve grease injection efficiency.

[0042] The controller 11 sends a command to the metering valve 36 according to the preset grease injection amount corresponding to the bearing model. The metering valve 36 opens its internal channel, and the preheated grease is injected into the bearing ball pocket through the inner cavity of the hollow rotating rod 311 from the grease injection head 312. When the grease injection amount reaches the set value, the metering valve 36 quickly closes the channel to complete the metered grease injection. Then, the motor 33 reverses to drive the grease injection head to move up and reset. The electric telescopic rod 20 retracts to release the arc-shaped clamp from the bearing. The operator removes the greased bearing, and the device enters the next working cycle.

[0043] It should be noted that the controller 11, electric telescopic rod 20, pressure sensor 26, metering valve 36, fiber optic sensor 314, heating plate 45, temperature sensor, and various motors are all common models available on the market. Each component is a device or equipment that exists in the prior art or is a device or equipment that can be implemented by the prior art. Its power supply, specific composition and principle are clear to those skilled in the art. At the same time, the fixing connection method mentioned in this utility model can adopt the connection methods that exist in the prior art and are common, such as bolts, welding and bonding, so they will not be described in detail.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A metering grease injection valve device for bearings, characterized in that, include: The frame (1) has four fixed legs (10) at the bottom corners, a controller (11) is fixedly connected to the front side of the frame (1), and an operating table (12) is fixedly connected to the top front side of the frame (1). The bearing adaptive pressure positioning component (2) is set on the upper and lower sides of the operating table (12) and is used to perform pressure adaptive positioning of the bearing. Grease injection head alignment component (3), which is located directly above the bearing adaptive pressure positioning component (2), is used to calibrate and align the grease injection head with the bearing ball pocket position; The grease preheating and conveying assembly (4) is located on the left side of the grease injection head alignment assembly (3). The grease preheating and conveying assembly (4) is used to preheat the grease, reduce the viscosity of the grease, and improve the grease injection efficiency.

2. The metering grease injection valve device for bearings according to claim 1, characterized in that, The bearing adaptive pressure positioning assembly (2) includes an electric telescopic rod (20), which is fixedly connected to the bottom center of the operating table (12). The telescopic end of the electric telescopic rod (20) is fixedly connected to a lifting block (21). The side wall of the lifting block (21) is rotatably connected to four rectangularly distributed connecting rods (22). The top of each of the four connecting rods (22) is rotatably connected to a cross slider (23). The top of the operating table (12) has four rectangularly distributed cross grooves (25) that are slidably connected to the outer wall of the cross slider (23).

3. A metering grease injection valve device for bearings according to claim 2, characterized in that, A bearing placement plate (27) is fixedly connected to the top center of the operating table (12). The tops of the four cross sliders (23) all extend through to the top of the operating table (12) and are fixedly connected to arc-shaped clamps (24). Pressure sensors (26) are fixedly connected to the clamping arc surfaces of the four arc-shaped clamps (24). The controller (11) is electrically connected to the electric telescopic rod (20) and the pressure sensors (26) respectively.

4. A metering grease injection valve device for bearings according to claim 1, characterized in that, The grease injection head alignment assembly (3) includes a fixed frame (30), the rear side of which is fixedly connected to the frame (1). The upper and lower inner walls of the fixed frame (30) are rotatably connected to lead screws (31). The top of the fixed frame (30) is fixedly connected to a motor (33). The output end of the motor (33) passes through the interior of the fixed frame (30) and is fixedly connected to the lead screw (31). The left and right sides of the lead screw (31) are provided with slide rods (32) fixedly connected to the inner wall of the fixed frame (30). The outer wall of the lead screw (31) is threadedly connected to a movable seat (34) which is slidably connected to the outer wall of the two slide rods (32). The front side of the movable seat (34) is fixedly connected to a cross plate (35).

5. A metering grease injection valve device for bearings according to claim 4, characterized in that, A metering valve (36) is fixedly connected to the top of the horizontal plate (35). Two side plates (37) are fixedly connected to the bottom of the horizontal plate (35). A worm gear (38) is rotatably connected to the opposite surfaces of the two side plates (37). A motor (39) is fixedly connected to the front side wall of the front side plate (37). The output end of the motor (39) extends through to the rear side wall of the front side plate (37) and is fixedly connected to the worm gear (38). A worm wheel (310) is meshed with the left side of the worm gear (38). A hollow rotating rod (311) is fixedly connected to the inner wall of the worm wheel (310). The top of the hollow rotating rod (311) is rotatably connected to the oil outlet at the bottom of the metering valve (36) through a sealed bearing. A grease injection head (312) is detachably fixedly connected to the bottom of the hollow rotating rod (311).

6. A metering grease injection valve device for bearings according to claim 5, characterized in that, The bottom of the outer wall of the hollow rotating rod (311) is rotatably connected to a fixed rod (313). The end of the fixed rod (313) away from the hollow rotating rod (311) is fixedly connected to a fiber optic sensor (314). The controller (11) is electrically connected to motor one (33), metering valve (36), motor two (39), and fiber optic sensor (314).

7. A metering grease injection valve device for bearings according to claim 5, characterized in that, The grease preheating and conveying assembly (4) includes a conveying cylinder fixing frame (40), which is fixedly connected to the left side of the horizontal plate (35). A conveying cylinder (41) is fixedly connected to the top of the conveying cylinder fixing frame (40). The right end of the conveying cylinder (41) is fixedly connected to the oil inlet of the metering valve (36). A feed hopper (42) communicating with the inside of the outer wall of the conveying cylinder (41) is fixedly connected to the top of the outer wall of the conveying cylinder (41). An auger (43) is rotatably connected inside the conveying cylinder (41). A motor (44) is fixedly connected to the left side of the conveying cylinder (41). The output end of the motor (44) extends through the inside of the conveying cylinder (41) and is fixedly connected to the auger (43).

8. A metering grease injection valve device for bearings according to claim 7, characterized in that, Heating plates (45) are uniformly fixedly connected inside the conveying cylinder (41), and temperature sensors are fixedly connected to the inner wall of the conveying cylinder (41). The controller (11) is electrically connected to the motor (44), the heating plate (45), and the temperature sensor respectively.

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