A hot die forging press with a lubricating oil detection and replenishment function

Abstract

The present invention discloses a hot die forging press with a lubricating oil detection and replenishment function, which relates to the technical field of hot die forging presses. It includes a mounting frame, a forging unit, a detection unit and a controller. The mounting frame is used to install and fix the forging unit, the detection unit and the controller. The forging unit is used for forging forgings. The detection unit is used for detecting the liquid level of lubricating oil and automatically replenishing it. The controller is used to control the opening and closing of the forging unit and the detection unit. When it is necessary to forge a forging, the controller controls the forging unit to start hammering the forging and at the same time controls the detection unit to spray lubricating oil onto the surface of the forging to form an oil film to protect the forging and avoid damage during forging. When the detection unit detects that the lubricating oil is insufficient, it automatically replenishes it to avoid the inability to lubricate the forging due to insufficient lubricating oil, which affects the forging quality.

Description

Technical Field

[0001] The present invention relates to the technical field of hot die forging presses, and specifically to a hot die forging press with a lubricating oil detection and replenishment function. Background Art

[0002] Hot die forging presses play a crucial role in modern industrial production and are widely used in many fields such as automobile manufacturing, aerospace, and mechanical equipment. They forge heated metal blanks into various forgings with complex shapes and high precision requirements through powerful pressure, greatly improving production efficiency and product quality.

[0003] In the forging process of traditional hot die forging presses, they usually only focus on the lubrication of the equipment itself and neglect the protection of forgings. Under the high-temperature and high-pressure forging environment, forgings are prone to adhesion to the die, which not only affects the surface quality of the forgings but may also lead to difficult demoulding and increased production costs. Currently, the replenishment of lubricating oil often relies on manual operation or simple timing devices, which easily leads to the situation of untimely lubricating oil replenishment. When the equipment operates for a long time or under high-load working conditions, the lubricating oil will gradually be consumed. If it cannot be replenished in time, the forgings and friction parts will not be fully lubricated, thus aggravating wear. Forgings lacking lubrication protection are more likely to produce defects such as cracks during the forging process, reducing the qualified rate of products. Summary of the Invention

[0004] The purpose of the present invention is to provide a hot die forging press with a lubricating oil detection and replenishment function to solve the problems raised in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] The hot die forging press with a lubricating oil detection and replenishment function includes a mounting frame, a forging unit, a detection unit, and a controller. The mounting frame is placed on a horizontal foundation. The forging unit is fixedly connected to the mounting frame. The forging unit has the function of adjusting the spraying angle of lubricating oil for the detection unit. The forging unit is slidably connected to the detection unit. The detection unit is fixedly installed at one end of the mounting frame close to the horizontal foundation. The detection unit has the functions of automatic lubricating oil replenishment and facilitating the removal of forgings. The controller is fixedly installed on the mounting frame, and the controller is electrically connected to the forging unit.

[0007] The mounting bracket is used to install and fix the forging unit, the detection unit and the controller. The forging unit is used for forging forgings. The detection unit is used for detecting the liquid level of lubricating oil and automatically replenishing it. The controller is used to control the opening and closing of the forging unit and the detection unit. When it is necessary to forge a forging, the controller controls the forging unit to start hammering the forging while controlling the detection unit to spray lubricating oil onto the surface of the forging to form an oil film to protect the forging and avoid damage during forging. When the detection unit detects that the lubricating oil is insufficient, it automatically replenishes it to avoid the inability to lubricate the forging due to insufficient lubricating oil, which affects the forging quality.

[0008] Further, the forging unit includes a motor, a driving wheel, a driven wheel, a synchronous belt, a rotating rod, a pressing block, a cylinder, a telescopic rod, an upper die and a conductive ring. The fixed end of the motor is fixedly installed on the upper surface of one end of the mounting bracket away from the horizontal base. The output end of the motor is fixedly connected to the driving wheel. The driven wheel is fixedly installed at one end of the rotating rod. The driving wheel and the driven wheel are connected by a synchronous belt. The rotating rod is rotatably installed on the end face of the mounting bracket perpendicular to the horizontal base parallel to the horizontal axis. The other end of the rotating rod is fixedly connected to the pressing block. The cylinder is fixedly installed on the upper surface of one end of the mounting bracket away from the horizontal base. One end of the telescopic rod is slidably installed inside the cylinder, and the other end is fixedly connected to the upper die. The upper die is slidably connected to the mounting bracket. A groove is opened at one end of the upper die close to the horizontal base. A conductive ring is arranged inside the groove of the upper die. The conductive ring is slidably connected to the detection unit.

[0009] When the forging is transported to the lower die, the controller starts the cylinder, injects gas upward into the cylinder, thereby pushing the telescopic rod to move downward by the maximum stroke, and then drives the upper die to move downward. At this time, the controller controls the motor to start, thereby driving the driving wheel to rotate. Under the driving action of the synchronous belt, the driven wheel is driven to rotate, thereby driving the rotating rod and the pressing block to rotate synchronously. When the pressing block gradually presses the upper die to move downward and drives the telescopic rod to extend until the upper die contacts the forging, at this time, the pressing block continues to press the upper die to move downward, thereby driving the upper die to press the forging to shape the forging.

[0010] Further, the detection unit includes a fixed column, a coil, a lower die, a telescopic motor, a pressing plate, a piezoresistor, a jacking rod, an oil storage cylinder, an oil inlet, an oil outlet, a nozzle, a rotating column, a memory spring, a sealing plate, a slide rail, an electromagnet, a magnet and a conductive plate. The fixed column is slidably connected to the conductive ring. The fixed column is fixedly installed perpendicular to the horizontal axis at one end of the lower die away from the horizontal base. The coil is evenly wound around the outer surface of the fixed column. The lower die is fixedly installed at one end of the mounting frame close to the horizontal base. Two cavities of different sizes are formed inside the lower die. The fixed end of the telescopic motor is fixedly installed in the small cavity formed inside the lower die. The telescopic end of the telescopic motor extends into the oil storage cylinder and is fixedly connected to the pressing plate. The oil storage cylinder is fixedly installed in the large cavity formed inside the lower die. The pressing plate is slidably installed inside the oil storage cylinder. A piezoresistor is fixedly installed at one end of the pressing plate close to the horizontal base. The other end of the pressing plate away from the horizontal base is fixedly connected to the jacking rod. The jacking rod is slidably connected to the lower die. The oil storage cylinder is provided with an oil inlet, and a one-way valve is arranged inside the oil inlet. The oil inlet is communicated with an external lubricating oil tank through a pipeline. An oil outlet is arranged on the side wall of the oil storage cylinder, and a one-way valve is arranged inside the oil outlet. The oil outlet is conductively connected to the nozzle through a hose. The nozzle is fixedly installed on the rotating column. The rotating column is rotatably installed on the lower die. One end of the memory spring is fixedly connected to the nozzle, and the other end is fixedly connected to the lower die. The memory spring is electrically connected to the conductive ring. There are multiple sealing plates, and the sealing plates are rotatably installed in the oil inlet through connecting columns. The slide rail is fixedly installed inside the oil inlet. The electromagnet is fixedly installed in the middle of the slide rail. The magnet is slidably installed on the slide rail. The magnet is fixedly connected to the sealing plate through a connecting rod. The electromagnet is electrically connected to the conductive plate. The conductive plate is fixedly installed at one end of the piezoresistor close to the horizontal base. The electromagnet and the magnet have the same polarity along the closer end of the slide rail.

[0011] When the upper die contacts the forging, the controller controls the telescopic motor to start. The telescopic motor extends a fixed length each time, driving the extrusion plate to move downward, squeezing the lubricating oil in the oil storage cylinder out of the oil outlet to the nozzle and spraying it on the forging to lubricate the forging. When the extrusion plate moves downward, it drives the piezoresistor to move downward. When the controller detects that the resistance value of the piezoresistor changes significantly after being subjected to the reverse pressure of the lubricating oil, it indicates that the lubricating oil is sufficient. When the controller detects that the resistance value of the piezoresistor changes less after being subjected to the reverse pressure of the lubricating oil and is not within the preset range, it indicates that the lubricating oil is insufficient. The controller transports lubricating oil into the oil storage cylinder through the oil inlet to ensure sufficient lubricating oil, thus realizing the function of automatic detection and replenishment of lubricating oil, avoiding the situation where insufficient lubricating oil cannot transport the lubricating oil to the nozzle and spray it on the forging for lubrication. When the forging is completed, when the telescopic motor contracts, it drives the extrusion plate to move upward, thereby driving the jacking rod to rise, thus jacking up the forging for easy removal. When the lubricating oil is insufficient, the resistance value of the piezoresistor becomes larger, and the current flows through the piezoresistor and into the conductive plate. The conductive plate transports a small current to the electromagnet. The electromagnet receives less current, so the repulsive force on the magnet decreases. At this time, the magnet slides downward along the slide rail, thereby driving the sealing plate to rotate synchronously to open the channel of the oil inlet, allowing external lubricating oil to enter the oil storage cylinder for replenishment of the lubricating oil.

[0012] During the downward movement of the upper die, it drives the conductive ring to move downward synchronously. When the conductive ring just contacts the coil, the current transported by the controller passes through the coil and is then transported to the memory spring. The memory spring receives the current and heats up and expands. When the conductive ring contacts the coil and gradually moves downward, the effective number of turns of the coil gradually increases at this time, and the current gradually decreases. At this time, the memory spring slowly contracts. When the thickness of the forging is large, the distance between the upper die and the lower die becomes larger. At this time, the number of effective coils is small, and the current decreases less. The angle of contraction of the memory spring from the maximum telescopic angle also becomes smaller, thereby driving the nozzle to rotate and retract less around the rotating column. At this time, the nozzle can fully spray lubricating oil on the forging with a larger thickness, avoiding the problem that the nozzle retracts at a large angle and cannot spray lubricating oil on the upper surface of the forging, resulting in problems with the quality of the forging due to friction between the upper die and the forging during forging. When the thickness of the forging is small, the distance between the upper die and the lower die becomes smaller. At this time, the number of effective coils becomes more, and the current decreases more. The angle of contraction of the memory spring from the maximum telescopic angle also becomes larger, thereby driving the nozzle to rotate and retract more around the rotating column. At this time, the nozzle can fully spray lubricating oil on the forging with a smaller thickness, avoiding the problem that when the nozzle retracts at a small angle and sprays lubricating oil on the upper surface of the forging, the spraying angle is large, resulting in the lubricating oil being sprayed far beyond the forging and onto the lower die, and the forging cannot be fully sprayed, which will also cause problems with the quality of the forging due to insufficient lubrication and friction between the upper die and the forging during forging.

[0013] Further, the radius of the driven wheel is larger than that of the driving wheel.

[0014] In order to ensure that the driven wheel can obtain a good speed reduction and torque increase effect during the forging process, while meeting the working requirements and equipment performance of the forging press.

[0015] Furthermore, the extrusion block is in the shape of a cam.

[0016] By precisely controlling the rotation of the extrusion block, high-precision control of the descending position of the upper die can be achieved, ensuring that the dimensional tolerance of the forging is within a very small range. At the same time, in cooperation with the cylinder, the stroke of the upper die is jointly controlled. When the cylinder fails, a certain degree of movement control of the upper die can be ensured, improving the reliability and safety of the system.

[0017] Furthermore, a plurality of groups of round holes are evenly arranged on the surface of the nozzle.

[0018] The multiple groups of round holes can disperse the lubricating oil into numerous small oil droplets, which are ejected from different positions, covering a larger range of the surface of the forging, avoiding the situation of excessive or insufficient lubricating oil in local areas, and enabling each part of the forging to be lubricated with an appropriate amount and evenly.

[0019] Furthermore, the end of the coil close to the upper die is the current input end.

[0020] In order to facilitate the conductive ring to descend different heights according to forgings of different thicknesses and cooperate with the gradual change of the effective number of turns of the coil to remember the contraction degree of the spring, thereby changing the angle of the nozzle, so as to adapt to the full spraying of lubricating oil on the surfaces of forgings of different thicknesses, avoid wear, and improve the quality of the forgings.

[0021] Furthermore, the coil is electrically connected to the controller, the telescopic motor is electrically connected to the controller, the varistor is electrically connected to the controller, and the extrusion plate is electrically connected to the controller. In order to achieve the automatic control and timeliness of the device's reaction, when the controller detects that the resistance value change of the varistor is not within the preset range, the lubricating oil can be quickly replenished, avoiding the problem of insufficient lubricating oil that cannot transport the lubricating oil to the nozzle and spray it onto the forging for lubrication, resulting in quality problems of the forging.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. In the present invention, the stroke of the upper die is jointly controlled by the extrusion block and the cylinder in the forging unit. When the cylinder fails or malfunctions, the extrusion block can still ensure a certain degree of movement control of the upper die, improving the reliability and safety of the system.

[0024] 2. In the present invention, the conductive ring descends by different heights according to forgings of different thicknesses, and cooperates with the coil in the detection unit to change the contraction degree of the memory spring, thereby changing the angle of the nozzle, so as to adapt to the sufficient spraying of lubricating oil on the surfaces of forgings of different thicknesses, avoid wear, and improve the quality of forgings.

[0025] 3. When the pressing plate in the detection unit drives the piezoresistor to move down a fixed length in the present invention, the reaction pressures of lubricating oils at different depths on the piezoresistor are different. When the change in the piezoresistance value is small and exceeds the preset range, it indicates that the lubricating oil in the oil storage cylinder is insufficient. The electromagnetic iron receives less current, so the repulsive force on the magnet decreases. At this time, the magnet slides downward along the slide rail, thereby driving the sealing plate to rotate synchronously to open the channel of the oil inlet, enabling external lubricating oil to enter the oil storage cylinder, thus replenishing the lubricating oil. The lower the lubricating oil level, the larger the opening of the sealing plate, and the greater the flow rate input from the oil inlet. When the change in the piezoresistance value is large, it proves that the lubricating oil is sufficient. After the forging is completed, when the telescopic motor contracts, it drives the pressing plate to move upward, thereby driving the jacking rod to rise, so as to jack up the forging for easy removal. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall external structure of a hot die forging press with a lubricating oil detection and replenishment function according to the present invention;

[0027] Figure 2 is a front view structural schematic diagram of a hot die forging press with a lubricating oil detection and replenishment function according to the present invention;

[0028] Figure 3 is a top view structural schematic diagram of a hot die forging press with a lubricating oil detection and replenishment function according to the present invention;

[0029] Figure 4 is a Figure 3 sectional view structural schematic diagram at A - A of a hot die forging press with a lubricating oil detection and replenishment function according to the present invention;

[0030] Figure 5 is a Figure 4 locally enlarged structural schematic diagram at B of a hot die forging press with a lubricating oil detection and replenishment function according to the present invention;

[0031] Figure 6 is a Figure 4 locally enlarged structural schematic diagram at C of a hot die forging press with a lubricating oil detection and replenishment function according to the present invention;

[0032] Figure 7 is a Figure 4 locally enlarged structural schematic diagram at D of a hot die forging press with a lubricating oil detection and replenishment function according to the present invention;

[0033] Figure 8 Schematic diagram of the appearance structure of the nozzle of a hot die forging press with a lubricating oil detection and replenishment function according to the present invention;

[0034] Figure 9 Internal schematic diagram of the oil inlet of a hot die forging press with a lubricating oil detection and replenishment function according to the present invention

[0035] In the figure: 1, mounting frame; 2, forging unit; 21, motor; 22, driving wheel; 23, driven wheel; 24, synchronous belt; 25, rotating rod; 26, extrusion block; 27, cylinder; 28, telescopic rod; 29, upper die; 210, conductive ring; 3, detection unit; 31, fixed column; 32, coil; 33, lower die; 34, telescopic motor; 35, extrusion plate; 36, piezoresistor; 37, jacking rod; 38, oil storage cylinder; 39, oil inlet; 310, oil outlet; 311, nozzle; 312, rotating column; 313, memory spring; 314, blocking plate; 315, slide rail; 316, electromagnet; 317, magnet; 318, conductive plate; 4, controller. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment: As Figures 1 - 8 shown, the present invention provides a technical solution:

[0038] As Figure 1 shown, a hot die forging press with a lubricating oil detection and replenishment function includes a mounting frame 1, a forging unit 2, a detection unit 3 and a controller 4. The mounting frame 1 is placed on a horizontal foundation. The forging unit 2 is fixedly connected to the mounting frame 1. The forging unit 2 has the function of adjusting the lubricating oil spraying angle of the detection unit 3. The forging unit 2 is slidably connected to the detection unit 3. The detection unit 3 is fixedly installed at one end of the mounting frame 1 close to the horizontal foundation. The detection unit 3 has the functions of automatic lubricating oil replenishment and facilitating the removal of forged parts. The controller 4 is fixedly installed on the mounting frame 1. The controller 4 is electrically connected to the forging unit 2.

[0039] The mounting bracket 1 is used to install and fix the forging unit 2, the detection unit 3 and the controller 4. The forging unit 2 is used for forging forgings. The detection unit 3 is used for detecting the liquid level of lubricating oil and automatic replenishment. The controller 4 is used to control the opening and closing of the forging unit 2 and the detection unit 3. When it is necessary to forge a forging, the controller 4 controls the forging unit 2 to start hammering the forging while controlling the detection unit 3 to spray lubricating oil onto the surface of the forging to form an oil film to protect the forging and avoid damage during forging. When the detection unit 3 detects that the lubricating oil is insufficient, it automatically replenishes it to avoid the inability to lubricate the forging due to insufficient lubricating oil and affecting the forging quality.

[0040] As Figure 1 , 2 , 3, 4, 6 show that the forging unit 2 includes a motor 21, a driving wheel 22, a driven wheel 23, a synchronous belt 24, a rotating rod 25, a pressing block 26, a cylinder 27, a telescopic rod 28, an upper die 29 and a conductive ring 210. The fixed end of the motor 21 is fixedly installed on the upper surface of the mounting bracket 1 away from one end of the horizontal base. The output end of the motor 21 is fixedly connected to the driving wheel 22. The driven wheel 23 is fixedly installed at one end of the rotating rod 25. The driving wheel 22 and the driven wheel 23 are connected by the synchronous belt 24. The rotating rod 25 is rotatably installed on the end face of the mounting bracket 1 perpendicular to the horizontal base parallel to the horizontal axis. The other end of the rotating rod 25 is fixedly connected to the pressing block 26. The cylinder 27 is fixedly installed on the upper surface of the mounting bracket 1 away from one end of the horizontal base. One end of the telescopic rod 28 is slidably installed inside the cylinder 27, and the other end is fixedly connected to the upper die 29. The upper die 29 is slidably connected to the mounting bracket 1. A groove is provided at one end of the upper die 29 close to the horizontal base. A conductive ring 210 is arranged inside the groove of the upper die 29. The conductive ring 210 is slidably connected to the detection unit 3.

[0041] When the forging is transported to the lower die 33, the controller 4 starts the cylinder 27, introduces gas into the upper part inside the cylinder 27, thereby pushing the telescopic rod 28 to move downward by the maximum stroke, and then drives the upper die 29 to move downward. At this time, the controller 4 controls the motor 21 to start, thereby driving the driving wheel 22 to rotate. Under the driving action of the synchronous belt 24, the driven wheel 23 is driven to rotate, thereby driving the rotating rod 25 and the pressing block 26 to rotate synchronously. When the pressing block 26 gradually presses the upper die 29 to move downward and drives the telescopic rod 28 to extend until the upper die 29 contacts the forging. At this time, the pressing block 26 continues to press the upper die 29 to move downward, thereby driving the upper die 29 to press the forging to shape the forging.

[0042] As Figure 4 , 5As shown in Figures 6, 7, 8, and 9, the detection unit 3 includes a fixed column 31, a coil 32, a lower die 33, a telescopic motor 34, a pressing plate 35, a piezoresistor 36, a jacking rod 37, an oil storage cylinder 38, an oil inlet 39, an oil outlet 310, a nozzle 311, a rotating column 312, a memory spring 313, a sealing plate 314, a slide rail 315, an electromagnet 316, a magnet 317, and a conductive plate 318. The fixed column 31 is slidably connected to the conductive ring 210. The fixed column 31 is fixedly installed perpendicular to the horizontal axis at one end of the lower die 33 away from the horizontal base. The coil 32 is evenly wound around the outer surface of the fixed column 31. The lower die 33 is fixedly installed at one end of the mounting frame 1 close to the horizontal base. Two cavities of different sizes are formed inside the lower die 33. The fixed end of the telescopic motor 34 is fixedly installed in the small cavity formed inside the lower die 33. The telescopic end of the telescopic motor 34 extends into the oil storage cylinder 38 and is fixedly connected to the pressing plate 35. The oil storage cylinder 38 is fixedly installed in the large cavity formed inside the lower die 33. The pressing plate 35 is slidably installed inside the oil storage cylinder 38. A piezoresistor 36 is fixedly installed at one end of the pressing plate 35 close to the horizontal base. The end of the pressing plate 35 away from the horizontal base is fixedly connected to the jacking rod 37. The jacking rod 37 is slidably connected to the lower die 33. The oil storage cylinder 38 is provided with an oil inlet 39. A one-way valve is arranged inside the oil inlet 39. The oil inlet 39 is communicated with an external lubricating oil tank through a pipeline. An oil outlet 310 is arranged on the side wall of the oil storage cylinder 38. A one-way valve is arranged inside the oil outlet 310. The oil outlet 310 is conductively connected to the nozzle 311 through a hose. The nozzle 311 is fixedly installed on the rotating column 312. The rotating column 312 is rotatably installed on the lower die 33. One end of the memory spring 313 is fixedly connected to the nozzle 311, and the other end is fixedly connected to the lower die 33. The memory spring 313 is electrically connected to the conductive ring 210. There are multiple sealing plates 314. The sealing plates 314 are rotatably installed in the oil inlet 39 through connecting columns. The slide rail 315 is fixedly installed inside the oil inlet 39. The electromagnet 316 is fixedly installed in the middle of the slide rail 315. The magnet 317 is slidably installed on the slide rail 315. The magnet 317 is fixedly connected to the sealing plate 314 through a connecting rod. The electromagnet 316 is electrically connected to the conductive plate 318. The conductive plate 318 is fixedly installed at one end of the piezoresistor 36 close to the horizontal base. The polarities of the electromagnet 316 and the magnet 317 are the same along the approaching end of the slide rail 315.

[0043] When the upper die 29 contacts the forging, the controller 4 controls the telescopic motor 34 to start. The telescopic motor 34 extends a fixed length each time, driving the extrusion plate 35 to move downward, squeezing the lubricating oil in the oil storage cylinder 38 out of the oil outlet 310 and spraying it to the nozzle 311 to lubricate the forging. When the extrusion plate 35 moves downward, it drives the piezoresistor 36 to move downward. When the controller 4 detects that the resistance value of the piezoresistor 36 changes significantly under the reverse pressure of the lubricating oil, it indicates that the lubricating oil is sufficient. When the controller 4 detects that the resistance value of the piezoresistor 36 changes little under the reverse pressure of the lubricating oil and is not within the preset range, it indicates that the lubricating oil is insufficient. The controller 4 transports lubricating oil into the oil storage cylinder 38 through the oil inlet 39 to ensure sufficient lubricating oil, thus realizing the function of automatic detection and replenishment of lubricating oil, and avoiding the situation where insufficient lubricating oil cannot transport the lubricating oil to the nozzle 311 and spray it on the forging for lubrication. When the forging is completed, when the telescopic motor 34 contracts, it drives the extrusion plate 35 to move upward, thereby driving the jacking rod 37 to rise, so as to jack up the forging and facilitate the removal of the forging. When the lubricating oil is insufficient, the resistance value of the piezoresistor 36 increases, and the current flows through the piezoresistor 36 and into the conductive plate 318. The conductive plate 318 transports a small current to the electromagnet 316. The electromagnet 316 receives less current, so the repulsive force on the magnet 317 decreases. At this time, the magnet 317 slides downward along the slide rail 315, thereby driving the plugging plate 314 to rotate synchronously to open the channel of the oil inlet 39, allowing external lubricating oil to enter the oil storage cylinder 38, so as to replenish the lubricating oil.

[0044] During the downward movement of the upper die 29, the conductive ring 210 is driven to move downward synchronously. When the conductive ring 210 just contacts the coil 32, the current conveyed by the controller 4 passes through the coil 32 and is then conveyed to the conductive ring 210, and finally conveyed to the memory spring 313. The memory spring 313 receives the current and heats up and expands. When the conductive ring 210 contacts the coil 32 and gradually moves downward, the effective number of turns of the coil 32 gradually increases at this time, and the current gradually decreases. At this time, the memory spring 313 slowly contracts. When the thickness of the forging is large, the distance between the upper die 29 and the lower die 33 becomes larger. At this time, the number of effective coils 32 is small, and the current decreases less. The contraction angle of the memory spring 313 from the maximum expansion and contraction angle also becomes smaller, so the rotation and retraction angle of the nozzle 311 around the rotating column 312 also becomes smaller. At this time, the nozzle 311 can fully spray lubricating oil on the forging with a large thickness, avoiding the problem that the nozzle 311 retracts at a large angle and cannot spray lubricating oil on the upper surface of the forging, resulting in problems with the quality of the forging due to friction between the upper die 29 and the forging during forging. When the thickness of the forging is small, the distance between the upper die 29 and the lower die 33 becomes smaller. At this time, the number of effective coils 32 becomes larger, and the current decreases more. The contraction angle of the memory spring 313 from the maximum expansion and contraction angle also becomes larger, so the rotation and retraction angle of the nozzle 311 around the rotating column 312 also becomes larger. At this time, the nozzle 311 can fully spray lubricating oil on the forging with a small thickness, avoiding the problem that when the nozzle 311 retracts at a small angle and sprays lubricating oil on the upper surface of the forging, the spraying angle is large, resulting in the lubricating oil being sprayed far beyond the forging and onto the lower die 33, and the forging cannot be fully sprayed, which will also cause problems with the quality of the forging due to insufficient lubrication and friction between the upper die 29 and the forging during forging.

[0045] As Figure 1 、 3 shown, the driven wheel 23 has a larger radius than the driving wheel 22.

[0046] In order to ensure that the driven wheel 23 can obtain good speed reduction and torque increase effects during forging, and at the same time meet the working requirements and equipment performance of the forging press.

[0047] As Figure 4 shown, the extrusion block 26 is in the shape of a cam.

[0048] By precisely controlling the rotation of the extrusion block 26, high-precision control of the downward position of the upper die 29 can be achieved, ensuring that the dimensional tolerance of the forging is within a very small range. At the same time, the stroke of the upper die 29 is jointly controlled with the cylinder 27. When the cylinder 27 fails, a certain degree of motion control of the upper die 29 can be ensured, improving the reliability and safety of the system.

[0049] As Figure 8 shown, the surface of the nozzle 311 is evenly provided with multiple groups of round holes.

[0050] Multiple groups of round holes can disperse the lubricating oil into numerous tiny oil droplets, which are ejected from different positions to cover a larger area of the forging surface, avoiding the situation of excessive or insufficient lubricating oil in local areas, so that each part of the forging can obtain appropriate and uniform lubrication.

[0051] As Figure 6 shown, one end of the coil 32 close to the upper die 29 is the current input end.

[0052] In order to facilitate the conductive ring 210 to descend different heights according to forgings of different thicknesses and cooperate with the gradual change of the effective number of turns of the coil 32 to memorize the contraction degree of the memory spring 313, thereby changing the angle of the nozzle 311, so as to adapt to the sufficient spraying of lubricating oil on the surfaces of forgings of different thicknesses, avoid causing wear, and improve the quality of forgings.

[0053] As Figure 5 、 6 shown, the coil 32 is electrically connected to the controller 4, the telescopic motor 34 is electrically connected to the controller 4, the varistor 36 is electrically connected to the controller 4, and the extrusion plate 35 is electrically connected to the controller 4.

[0054] In order to achieve the automatic control and timeliness of the device's reaction, when the controller detects that the resistance value change of the varistor 36 is not within the preset range, it can quickly replenish the lubricating oil to avoid insufficient lubricating oil and being unable to transport the lubricating oil to the nozzle 311 and spray it onto the forging for lubrication, resulting in forging quality problems.

[0055] The working principle of the present invention:

[0056] When the forging is transported to the lower die 33, the controller 4 starts the air cylinder 27, introduces gas into the upper part of the air cylinder 27, thereby pushing the telescopic rod 28 to move downward by the maximum stroke, and then driving the upper die 29 to move downward. At this time, the controller 4 controls the motor 21 to start, thereby driving the driving wheel 22 to rotate. Under the driving action of the synchronous belt 24, the driven wheel 23 is driven to rotate, thereby driving the rotating rod 25 and the extrusion block 26 to rotate synchronously. When the extrusion block 26 gradually squeezes the upper die 29 to move downward, it drives the telescopic rod 28 to extend until the upper die 29 contacts the forging. At this time, the extrusion block 26 continues to squeeze the upper die 29 to move downward, thereby driving the upper die 29 to squeeze the forging to shape the forging.

[0057] When the upper die 29 contacts the forging, the controller 4 controls the telescopic motor 34 to start. The telescopic motor 34 extends a fixed length each time, driving the pressing plate 35 to move downward, squeezing the lubricating oil in the oil storage cylinder 38 out of the oil outlet 310 and spraying it to the nozzle 311 to lubricate the forging. When the pressing plate 35 moves downward, it drives the varistor 36 to move downward. When the controller 4 detects that the resistance value of the varistor 36 changes significantly under the reverse pressure of the lubricating oil, it indicates that the lubricating oil is sufficient. When the controller 4 detects that the resistance value of the varistor 36 changes little under the reverse pressure of the lubricating oil and is not within the preset range, it indicates that the lubricating oil is insufficient. The controller 4 transports lubricating oil into the oil storage cylinder 38 through the oil inlet 39 to ensure sufficient lubricating oil, thus realizing the function of automatic detection and replenishment of lubricating oil, and avoiding the situation where insufficient lubricating oil cannot transport the lubricating oil to the nozzle 311 and spray it on the forging for lubrication. When the forging is completed, when the telescopic motor 34 contracts, it drives the pressing plate 35 to move upward, thereby driving the jacking rod 37 to rise, so as to jack up the forging and facilitate the removal of the forging. When the lubricating oil is insufficient, the resistance value of the varistor 36 becomes larger, and the current flows through the varistor 36 and into the conductive plate 318. The conductive plate 318 transports a small current to the electromagnet 316. The electromagnet 316 receives less current, so the repulsive force on the magnet 317 decreases. At this time, the magnet 317 slides downward along the slide rail 315, thereby driving the plugging plate 314 to rotate synchronously to open the channel of the oil inlet 39, allowing external lubricating oil to enter the oil storage cylinder 38, so as to replenish the lubricating oil.

[0058] During the downward movement of the upper die 29, the conductive ring 210 is driven to move downward synchronously. When the conductive ring 210 just contacts the coil 32, the current conveyed by the controller 4 passes through the coil 32 and is then conveyed to the conductive ring 210, and finally conveyed to the memory spring 313. The memory spring 313 receives the current, generates heat and expands. When the conductive ring 210 contacts the coil 32 and gradually moves downward, the effective number of turns of the coil 32 gradually increases at this time, and the current gradually decreases. At this time, the memory spring 313 slowly contracts. When the thickness of the forging is relatively large, the distance between the upper die 29 and the lower die 33 becomes larger. At this time, the number of effective coils 32 is less, and the current decreases less. The contraction angle of the memory spring 313 from the maximum expansion and contraction angle also becomes smaller, so that the contraction angle of the nozzle 311 rotating around the rotating column 312 also becomes smaller. At this time, the nozzle 311 can fully spray lubricating oil on the forging with a relatively large thickness, avoiding the problem that the nozzle 311 retracts at a large angle and cannot spray lubricating oil on the upper surface of the forging, resulting in problems with the quality of the forging due to friction between the upper die 29 and the forging during forging. When the thickness of the forging is relatively small, the distance between the upper die 29 and the lower die 33 becomes smaller. At this time, the number of effective coils 32 becomes more, and the current decreases more. The contraction angle of the memory spring 313 from the maximum expansion and contraction angle also becomes larger, so that the contraction angle of the nozzle 311 rotating around the rotating column 312 also becomes larger. At this time, the nozzle 311 can fully spray lubricating oil on the forging with a relatively small thickness, avoiding the problem that when the nozzle 311 retracts at a small angle and sprays lubricating oil on the upper surface of the forging, the spraying angle is relatively large, resulting in the lubricating oil being sprayed too far beyond the forging and onto the lower die 33, and the forging cannot be fully sprayed, which will also cause problems with the quality of the forging due to insufficient lubrication and friction between the upper die 29 and the forging during forging.

[0059] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A hot die forging press with a lubricating oil detection and replenishment function, characterized in that: The described hot die forging press with a lubricating oil detection and replenishment function includes a mounting frame (1), a forging unit (2), a detection unit (3) and a controller (4). The mounting frame (1) is placed on a horizontal foundation. The forging unit (2) is fixedly connected to the mounting frame (1). The forging unit (2) has the function of adjusting the lubricating oil spraying angle for the detection unit (3). The forging unit (2) is slidably connected to the detection unit (3). The detection unit (3) is fixedly installed at one end of the mounting frame (1) close to the horizontal foundation. The detection unit (3) has the functions of automatic lubricating oil replenishment and facilitating the removal of forged parts. The controller (4) is fixedly installed on the mounting frame (1). The controller (4) is electrically connected to the forging unit (2); The forging unit (2) includes a motor (21), a driving wheel (22), a driven wheel (23), a synchronous belt (24), a rotating rod (25), a pressing block (26), a cylinder (27), a telescopic rod (28), an upper die (29) and a conductive ring (210). The fixed end of the motor (21) is fixedly installed on the upper surface of the mounting frame (1) at the end away from the horizontal foundation. The output end of the motor (21) is fixedly connected to the driving wheel (22). The driven wheel (23) is fixedly installed at one end of the rotating rod (25). The driving wheel (22) and the driven wheel (23) are connected by the synchronous belt (24). The rotating rod (25) is rotatably installed parallel to the horizontal axis on the end face of the mounting frame (1) perpendicular to the horizontal foundation. The other end of the rotating rod (25) is fixedly connected to the pressing block (26). The cylinder (27) is fixedly installed on the upper surface of the mounting frame (1) at the end away from the horizontal foundation. One end of the telescopic rod (28) is slidably installed inside the cylinder (27), and the other end is fixedly connected to the upper die (29). The upper die (29) is slidably connected to the mounting frame (1). A groove is provided at one end of the upper die (29) close to the horizontal foundation. A conductive ring (210) is arranged inside the groove of the upper die (29). The conductive ring (210) is slidably connected to the detection unit (3); The detection unit (3) includes a fixed column (31), a coil (32), a lower mold (33), a telescopic motor (34), a pressing plate (35), a piezoresistor (36), a jacking rod (37), and an oil storage cylinder (38). The fixed column (31) is slidably connected to the conductive ring (210). The fixed column (31) is fixedly installed perpendicular to the horizontal axis at one end of the lower mold (33) away from the horizontal base. The coil (32) is evenly wound around the outer surface of the fixed column (31). The lower mold (33) is fixedly installed at one end of the mounting frame (1) close to the horizontal base. Two cavities of different sizes are formed inside the lower mold (33). The fixed end of the telescopic motor (34) is fixedly installed in the small cavity formed inside the lower mold (33). The telescopic end of the telescopic motor (34) extends into the oil storage cylinder (38) and is fixedly connected to the pressing plate (35). The oil storage cylinder (38) is fixedly installed in the large cavity formed inside the lower mold (33). The pressing plate (35) is slidably installed inside the oil storage cylinder (38). A piezoresistor (36) is fixedly installed at one end of the pressing plate (35) close to the horizontal base. The pressing plate (35) is fixedly connected to the jacking rod (37) at the end away from the horizontal base. The jacking rod (37) is slidably connected to the lower mold (33).

2. The hot die forging press with a lubricating oil detection and replenishment function according to claim 1, wherein: The detection unit (3) includes an oil inlet (39), an oil outlet (310), a nozzle (311), a rotating column (312), a memory spring (313), a sealing plate (314), a slide rail (315), an electromagnet (316), a magnet (317), and a conductive plate (318). The oil storage cylinder (38) is provided with an oil inlet (39). A one-way valve is arranged inside the oil inlet (39). The oil inlet (39) is communicated with an external lubricating oil tank through a pipeline. An oil outlet (310) is arranged on the side wall of the oil storage cylinder (38). A one-way valve is arranged inside the oil outlet (310). The oil outlet (310) is conductively connected to the nozzle (311) through a hose. The nozzle (311) is fixedly installed on the rotating column (312). The rotating column (312) is rotatably installed on the lower mold (33). One end of the memory spring (313) is fixedly connected to the nozzle (311), and the other end is fixedly connected to the lower mold (33). The memory spring (313) is electrically connected to the conductive ring (210). There are multiple sealing plates (314). The sealing plates (314) are rotatably installed in the oil inlet (39) through connecting columns. The slide rail (315) is fixedly installed inside the oil inlet (39). The electromagnet (316) is fixedly installed in the middle of the slide rail (315). The magnet (317) is slidably installed on the slide rail (315). The magnet (317) is fixedly connected to the sealing plate (314) through a connecting rod. The electromagnet (316) is electrically connected to the conductive plate (318). The conductive plate (318) is fixedly installed at one end of the piezoresistor (36) close to the horizontal base. The electromagnet (the 316) and the magnet (317) have the same polarity along the approaching end of the slide rail (315).

3. The hot die forging press with a lubricating oil detection and replenishment function according to claim 1, characterized in that: The driven wheel (23) has a larger radius than the driving wheel (22).

4. A hot die forging press with a lubricating oil detection and replenishment function according to claim 1, characterized in that: The extrusion block (26) is in the shape of a cam.

5. The hot die forging press with a lubricating oil detection and replenishment function according to claim 2, characterized in that: Multiple groups of round holes are evenly arranged on the surface of the nozzle (311).

6. The hot die forging press with a lubricating oil detection and replenishment function according to claim 2, characterized in that: One end of the coil (32) close to the upper die (29) is the current input end.

7. The hot die forging press with a lubricating oil detection and replenishment function according to claim 2, characterized in that: The coil (32) is electrically connected to the controller (4), the telescopic motor (34) is electrically connected to the controller (4), the varistor (36) is electrically connected to the controller (4), and the extrusion plate (35) is electrically connected to the controller (4).

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