A graphite spraying device and a spraying method of the graphite spraying device

Abstract

The present invention discloses a graphite spraying device and a spraying method thereof, which include a frame arranged on one side of a forging press, a movable frame movably arranged on the frame, a lifting frame slidably arranged on the movable frame along the vertical direction at one end, and a spraying bucket fixedly arranged at the other end of the lifting frame for storing graphite emulsion. The opening of the spraying bucket faces upward, and a plurality of nozzles communicating with its inner cavity are arranged at the bottom of the spraying bucket. A first driving mechanism for moving the movable frame to / from the forging station of the forging press is arranged between the movable frame and the frame, and a second driving mechanism for driving the lifting frame to lift is arranged between the lifting frame and the movable frame, which can not only improve the spraying effect of the graphite emulsion but also avoid waste of the graphite emulsion, effectively protecting the environment.

Description

Technical Field

[0001] The present invention relates to a graphite spraying device and a spraying method for the graphite spraying device. Background Art

[0002] Graphite is often used as a lubricant in the mechanical industry. Lubricating oil often cannot be used under the conditions of high speed, high temperature and high pressure, while graphite wear-resistant materials can work without lubricating oil at a very high sliding speed in the temperature range of 200-2000°C. Many devices for transporting corrosive media widely use graphite materials to make piston cups, sealing rings and bearings, and they do not need to add lubricating oil during operation. Many mechanical devices need to use graphite as a lubricant during the production process. Lubrication can reduce the direct contact between the mold and the workpiece, reduce the frictional resistance in the die cavity, thereby reducing mold wear. The traditional method uses a fixed device to spray from the end of the mold, which is not only uneven, wastes a large amount of graphite, but also reduces efficiency, increases production costs, and further reduces the mold life.

[0003] The graphite spraying device and the spraying method for the graphite spraying device in the prior art, such as the automatic graphite spraying device disclosed in CN207981504U, include: a spraying device, a lifting device, a moving device and a sliding device. Side walls are provided around the first lifting plate and the second lifting plate. The first lifting plate is arranged above the base, the second lifting plate is placed inside the first lifting plate, the left side wall of the second lifting plate is hinged to the left side wall of the first lifting plate through a damping shaft, and a limit bolt is arranged at the center position of the side wall of the second lifting plate. The present invention can effectively spray graphite on the mold, spray the graphite evenly, make the lubrication better during the forging process, extend the mold life, and the automatic painting device is controlled by a computer to spray paint automatically, with simple and convenient operation and good spraying uniformity effect.

[0004] There are certain defects in the above solution. The molds of the existing forging presses usually include a punch at the upper part and a die at the lower part. When cooling and lubricating the molds, both the punch and the die need to be sprayed with graphite. When spraying with a nozzle in the above solution, it is impossible to effectively spray the outer surface of the punch and the forming cavity of the die, and it will cause waste of graphite emulsion and environmental pollution. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defects existing in the prior art and provide a graphite spraying device, which can not only improve the spraying effect of graphite emulsion but also avoid waste of graphite emulsion and effectively protect the environment.

[0006] To achieve the above technical effects, the technical solution of the present invention is as follows: A graphite spraying device includes a frame disposed on one side of a forging press, a movable frame movably disposed on the frame, a lifting frame slidably disposed on the movable frame along the vertical direction at one end, and a spraying bucket fixedly disposed at the other end of the lifting frame for storing graphite milk. The opening of the spraying bucket faces upward, and a plurality of nozzles communicating with its inner cavity are provided at the bottom of the spraying bucket. A first driving mechanism for moving the spraying bucket to / from the forging station of the forging press is provided between the movable frame and the frame, and a second driving mechanism for driving the lifting frame to lift is provided between the lifting frame and the movable frame.

[0007] Further improved, the movable frame is rotatably connected to the frame, and the rotation axis of both extends along the vertical direction.

[0008] Further improved, the lifting frame includes a lifting frame body and a rotating arm rotatably disposed on the lifting frame body. The rotation axis of the rotating arm and the lifting frame body extends along the vertical direction. A third driving mechanism for driving the rotating arm to rotate is provided between the lifting frame body and the rotating arm, and the spraying bucket is fixedly disposed on the rotating arm.

[0009] Further improved, the movable frame is slidably disposed on the frame along the horizontal direction.

[0010] Further improved, at least one liquid inlet pipe communicating with its inner cavity is provided on the outer side of the spraying bucket. The liquid inlet pipe extends along the radial direction of the spraying bucket and is communicated with a storage tank for storing graphite milk. A suction pump for pumping the graphite milk in the storage tank into the spraying bucket through the liquid inlet pipe is provided on the storage tank.

[0011] Further improved, at least one overflow pipe communicating with its inner cavity is provided on the outer side of the spraying bucket. The vertical height of the overflow pipe is greater than that of the liquid inlet pipe. The overflow pipe extends along the radial direction of the spraying bucket and is communicated with the storage tank.

[0012] The purpose of the present invention is to overcome the defects existing in the prior art and provide a spraying method for a graphite spraying device, which can not only improve the spraying effect of graphite milk but also avoid waste of graphite milk and effectively protect the environment.

[0013] To achieve the above technical effects, the technical solution of the present invention is: a spraying method for a graphite spraying device, characterized in that the graphite spraying device comprises a frame arranged on one side of a forging press, a movable frame rotatably arranged on the frame, a lifting frame body with one end slidably arranged on the movable frame along a vertical direction, a rotating arm rotatably arranged at the other end of the lifting frame body, and a spray barrel for storing graphite emulsion fixedly arranged at the end of the rotating arm, the opening of the spray barrel faces upward, and a plurality of nozzles connected to the inner cavity thereof are arranged at the bottom of the spray barrel, a first driving mechanism for moving the spray barrel to / out of the forging station of the forging press is arranged between the movable frame and the frame, a second driving mechanism for driving the lifting frame body to be lifted and lowered is arranged between the lifting frame body and the movable frame, and a third driving mechanism for driving the rotating arm to rotate is arranged between the rotating arm and the lifting frame body;

[0014] The spraying method comprises the following steps:

[0015] S1: The first driving mechanism drives the movable frame to rotate so that the lifting frame body approaches the forging press, and the third driving mechanism adjusts the angle between the rotating arm and the lifting frame body so that the spray barrel is located directly below the punch of the forging press;

[0016] S2: The second driving mechanism drives the lifting frame body to slide upward so that the male mold is completely immersed in the graphite emulsion of the spray barrel;

[0017] S3: Spray graphite emulsion downwardly toward the concave die of the forging press through the nozzle, and the spraying time is 10S-20S;

[0018] S4: After the spraying is completed, the nozzle is closed, and at the same time, the second driving mechanism drives the lifting frame body to slide downward so that the punch is separated from the spray barrel, and then the first driving mechanism and the first driving mechanism drive the lifting frame body and the rotating arm to reset.

[0019] As a further improvement, step S3 further includes adding graphite emulsion into the spray barrel from a liquid inlet pipe at a lower portion of the spray barrel, and draining excess graphite emulsion out of the spray barrel from an overflow pipe at an upper portion of the spray barrel.

[0020] The advantages and beneficial effects of the present invention are as follows: 1. When cooling and lubricating the male mold and the female mold, the spray barrel is first moved to the bottom of the male mold, and then the lifting frame is slid upward to immerse the male mold in the graphite emulsion in the spray barrel to fully cool and lubricate it. For the female mold, spraying is achieved through a plurality of nozzles under the spray barrel, and the graphite emulsion completely flows into the molding cavity of the female mold, which not only has a good spraying effect, but also does not cause waste of graphite emulsion, and can effectively protect the environment;

[0021] 2. A number of liquid inlet pipes are provided at the lower part of the spraying bucket, and a number of overflow pipes are provided at its upper part. When the punch is immersed in the spraying bucket, the graphite milk flows back through the overflow pipes, preventing the overflow of the graphite milk. In addition, the spraying bucket is continuously fed with liquid through the liquid inlet pipes, and the liquid flows back through the overflow pipes, keeping the graphite milk in the spraying bucket in a flowing state, preventing the graphite milk from precipitating, and maintaining a certain liquid level in the spraying bucket at all times, ensuring that the punch can be fully cooled and lubricated. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the present invention (Embodiment 1);

[0023] Figure 2 is a schematic diagram of the present invention (Embodiment 2);

[0024] Figure 3 is a schematic diagram of the present invention (Embodiment 3).

[0025] In the figure: 1. movable frame; 2. lifting frame body; 3. spraying bucket; 4. nozzle; 5. first driving motor; 6. first gearbox; 7. lifting lead screw; 8. second driving motor; 9. liquid inlet pipe; 10. overflow pipe; 11. second driving cylinder; 12. first driving cylinder; 13. second gearbox; 14. first manifold; 15. second manifold; 16. rotating arm. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following describes the specific embodiments of the present invention in further detail with reference to the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and should not be used to limit the protection scope of the present invention.

[0027] Embodiment 1: As Figure 1 shown, a graphite spraying device and a spraying method of the graphite spraying device include a frame disposed on one side of a forging press, a movable frame 1 rotatably disposed on the frame, a lifting frame slidably disposed on the movable frame 1 along the vertical direction at one end, and a spraying bucket 3 fixedly disposed at the other end of the lifting frame for storing graphite milk. The opening of the spraying bucket 3 faces upward, and four nozzles 4 communicating with its inner cavity are provided at the bottom of the spraying bucket 3. A first driving mechanism for moving the movable frame 1 to / from the forging station of the forging press is provided between the movable frame 1 and the frame, and a second driving mechanism for driving the lifting frame to lift is provided between the lifting frame and the movable frame 1.

[0028] Preferably, in this embodiment, the rotation axis lines of the movable frame 1 and the machine frame extend along the vertical direction. The upper end of the movable frame 1 is connected to the machine frame through a rotating bearing. The first driving mechanism includes a first driving motor 5 arranged at the lower end of the machine frame and a first gearbox 6 connected between the lower end of the movable frame 1 and the first driving motor 5. In addition, the first driving motor 5 can be directly connected to the rotating shaft end of the movable frame 1 through a coupling, or the two can be connected through other transmission mechanisms, such as gear transmission, belt and pulley transmission, or chain and sprocket transmission, etc.

[0029] In order to enable the spraying bucket to accurately enter the forging station of the forging press (i.e., the position directly below the punch), the lifting frame includes a lifting frame body 2 and a rotating arm 16 rotatably arranged on the lifting frame body 2. The rotation axis line of the rotating arm 16 and the lifting frame body 2 extends along the vertical direction. A third driving mechanism for driving the rotating arm 16 to rotate is arranged between the lifting frame body 2 and the rotating arm 16. The spraying bucket is fixedly arranged on the rotating arm 16. Since the forging station of the forging press also has guide columns, if the movable frame rotates directly, the spraying bucket cannot reach the accurate position. By setting the rotating arm 16, the accurate position of the spraying bucket can be adjusted. In addition, since the sizes of different models of forging presses are different, the rotating arm 16 can be used for fine adjustment so that this equipment is applicable to different forging presses. In this embodiment, the third driving mechanism can adopt a hydraulic cylinder or a pneumatic cylinder, the cylinder body of which is rotatably arranged on the lifting frame body 2, and the piston rod thereof is rotatably connected to the rotating arm 16, thereby realizing the rotation of the rotating arm 16 relative to the lifting frame body 2.

[0030] In this embodiment, the second driving mechanism includes a lifting lead screw 7 rotatably arranged on the movable frame 1 and a lifting nut sleeve arranged on the lifting frame and cooperating with the lifting lead screw 7. A second driving motor 8 for driving the lifting lead screw 7 to rotate is arranged on the movable frame 1. The second driving motor 8 is connected to the lifting lead screw 7 through a second gearbox 13. The second driving motor 8 and the lifting lead screw 7 can also be directly connected through a coupling, or the two can be connected through other transmission mechanisms, such as gear transmission, belt and pulley transmission, or chain and sprocket transmission, etc.

[0031] In addition, a first guide rail extending along the vertical direction is also arranged on the movable frame 1. A first guiding member cooperating with the first guide rail is arranged at the end of the lifting frame, and the lifting nut sleeve can be arranged on the first guiding member.

[0032] In order to continuously supplement the graphite milk in the spraying bucket 3, four liquid inlet pipes 9 communicating with its inner cavity are arranged on the outer side of the spraying bucket 3. The liquid inlet pipes 9 extend along the radial direction of the spraying bucket 3. The liquid inlet pipes 9 are communicated with a storage tank for storing graphite milk. A suction pump for pumping the graphite milk in the storage tank into the spraying bucket 3 through the liquid inlet pipes 9 is arranged on the storage tank. The graphite milk in the storage tank is added into the spraying bucket 3 through the suction pump to supplement the consumption of the graphite milk.

[0033] In addition, in order to prevent the graphite milk from overflowing and at the same time make the graphite milk always circulate in the spraying bucket 3 to prevent graphite precipitation, four overflow pipes 10 communicating with its inner cavity are arranged on the outer side of the spraying bucket 3. The vertical height of the overflow pipes 10 is greater than that of the liquid inlet pipes 9. The overflow pipes 10 extend along the radial direction of the spraying bucket 3. The overflow pipes 10 are communicated with the storage tank. A number of overflow pipes 10 are arranged on its upper part. When the punch is immersed in the spraying bucket 3, the graphite milk flows back through the overflow pipes 10, and the overflow of the graphite milk will not be caused. In addition, the spraying bucket 3 is continuously fed with liquid through the liquid inlet pipes 9, and flows back through the overflow pipes 10, so that the graphite milk in the spraying bucket 3 is in a flowing state, the graphite milk will not cause precipitation, and at the same time, the graphite milk in the spraying bucket 3 is always at a certain liquid level, ensuring that the punch can be fully cooled and lubricated.

[0034] In this embodiment, the first driving motor 5 is a 1.5KW servo motor, the second driving motor 8 is a 3KW servo motor, the spraying bucket 3 is made of stainless steel, and it also includes a PLC control system to control the actions of each moving part, such as the opening and closing of the first driving motor 5, the second driving motor 8, the nozzle 4, and the action of the suction pump. In addition, the PLC is Mitsubishi, and the touch screen is Weikong 9 inches.

[0035] Embodiment 2: As Figure 2 shown, the difference from Embodiment 1 is that the second driving mechanism is a second driving cylinder 11 arranged on the movable frame 1. The piston rod of the second driving cylinder 11 is connected to the lifting frame. The second driving cylinder 11 can be an air cylinder or a hydraulic cylinder, etc.

[0036] Embodiment 3: As Figure 3As shown in the figure, the difference from the first embodiment is that the movable frame 1 is slidably arranged along the horizontal direction with respect to the frame. The first driving mechanism is a first driving cylinder 12 arranged on the frame, and the piston rod of the first driving cylinder 12 is connected to the movable frame 1. The first driving cylinder 12 can be an air cylinder or a hydraulic cylinder, etc. Moreover, a second guiding member is provided at the bottom of the movable frame 1, and a second guide rail extending along the horizontal direction is provided on the frame. The second guiding member is matched with the second guide rail. Of course, a lead screw moving structure can also be used to drive the movable frame 1, not limited to the way of using an air cylinder or a hydraulic cylinder. Compared with the first embodiment, sufficient operating space is required, that is, the installation and moving space of the movable frame 1, and a relatively large factory building area is needed.

[0037] Embodiment 4: The difference from the first embodiment is that there are four liquid inlet pipes 9 which are evenly distributed. The four liquid inlet pipes 9 are communicated with a circular first confluence pipe 14, and the first confluence pipe 14 is communicated with the storage tank. There are four overflow pipes 10 which are evenly distributed. The four overflow pipes 10 are communicated with a circular second confluence pipe 15, and the second confluence pipe 15 is communicated with the storage tank. In the first embodiment, the liquid inlet pipes 9 and the overflow pipes 10 are both connected to the storage tank through flexible pipes. However, during the operation of the entire device, more flexible pipes are likely to get entangled with each other. In this embodiment, the liquid inlet pipes 9 and the overflow pipes 10 are respectively confluent through the first confluence pipe 14 and the second confluence pipe 15 and then connected to the storage tank, thereby reducing the number of flexible pipes and making it not easy to occur entanglement phenomenon during the operation of the device.

[0038] A spraying method of a graphite spraying device, the graphite spraying device includes a frame arranged on one side of a forging press, a movable frame 1 rotatably arranged on the frame, a lifting frame body 2 slidably arranged at one end along the vertical direction on the movable frame 1, a rotating arm 16 rotatably arranged at the other end of the lifting frame body 2, and a spraying bucket 3 fixedly arranged at the end of the rotating arm 16 for storing graphite emulsion. The opening of the spraying bucket 3 faces upward, and a plurality of nozzles 4 communicated with its inner cavity are arranged at the bottom of the spraying bucket 3. A first driving mechanism for moving the spraying bucket 3 to / from the forging station of the forging press is arranged between the movable frame 1 and the frame. A second driving mechanism for driving the lifting frame body 2 to lift is arranged between the lifting frame body 2 and the movable frame. A third driving mechanism for driving the rotating arm 16 to rotate is arranged between the rotating arm 16 and the lifting frame body 2;

[0039] The spraying method includes the following steps:

[0040] S1: The first driving mechanism drives the movable frame 1 to rotate, causing the lifting frame body 2 to approach the forging press. The angle between the rotating arm 16 and the lifting frame body 2 is adjusted by the third driving mechanism so that the spraying bucket 3 is located directly below the punch of the forging press.

[0041] S2: The second driving mechanism drives the lifting frame body 2 to slide upward, causing the punch to be completely immersed in the graphite emulsion in the spraying bucket 3.

[0042] S3: The graphite emulsion is sprayed downward through the nozzle 4 onto the die of the forging press for 10S - 20S.

[0043] S4: After the spraying is completed, the nozzle is closed. At the same time, the second driving mechanism drives the lifting frame body 2 to slide downward, causing the punch to disengage from the spraying bucket 3. Then, the first driving mechanism and the first driving mechanism drive the lifting frame body 2 and the rotating arm 16 to return to their original positions.

[0044] Further improved, step S3 also includes adding graphite emulsion into the spraying bucket 3 through the liquid inlet pipe at the lower part of the spraying bucket 3, and discharging the excess graphite emulsion in the spraying bucket 3 from the overflow pipe at the upper part of the spraying bucket 3.

[0045] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A graphite spraying device, characterized in that, It includes a frame arranged on one side of a forging press, a movable frame movably arranged on the frame, a lifting frame with one end slidably arranged on the movable frame along the vertical direction, and a spraying bucket for storing graphite milk fixedly arranged at the other end of the lifting frame. The opening of the spraying bucket faces upward, and a plurality of nozzles communicating with its inner cavity are arranged at the bottom of the spraying bucket. A first driving mechanism for moving the spraying bucket to / from the forging station of the forging press is arranged between the movable frame and the frame, and a second driving mechanism for driving the lifting frame to lift is arranged between the lifting frame and the movable frame; At least one liquid inlet pipe communicating with its inner cavity is arranged on the outer side of the spraying bucket. The liquid inlet pipe extends along the radial direction of the spraying bucket and is communicated with a storage tank for storing graphite milk. A suction pump for pumping the graphite milk in the storage tank into the spraying bucket through the liquid inlet pipe is arranged on the storage tank. At least one overflow pipe communicating with its inner cavity is arranged on the outer side of the spraying bucket. The vertical height of the overflow pipe is greater than that of the liquid inlet pipe. The overflow pipe extends along the radial direction of the spraying bucket and is communicated with the storage tank; When cooling and lubricating the punch and the die, first move the spraying bucket to directly below the punch, and then make the lifting frame slide upward to immerse the punch in the graphite milk in the spraying bucket for sufficient cooling and lubrication. For the die, spraying is achieved through a plurality of nozzles below the spraying bucket, and the graphite milk completely flows into the forming cavity of the die.

2. The graphite spraying device according to claim 1, wherein, The movable frame is rotatably connected to the frame, and the rotation axis of both extends along the vertical direction.

3. The graphite spraying device according to claim 2, wherein, The lifting frame includes a lifting frame body and a rotating arm rotatably arranged on the lifting frame body. The rotation axis of the rotating arm and the lifting frame body extends along the vertical direction. A third driving mechanism for driving the rotating arm to rotate is arranged between the lifting frame body and the rotating arm, and the spraying bucket is fixedly arranged on the rotating arm.

4. The graphite spraying device according to claim 1, characterized in that, The movable frame is slidably arranged on the frame along the horizontal direction.

5. A spraying method of a graphite spraying device, characterized in that, This graphite spraying device includes a frame arranged on one side of a forging press, a movable frame rotatably arranged on the frame, a lifting frame body with one end slidably arranged on the movable frame along the vertical direction, a rotating arm rotatably arranged at the other end of the lifting frame body, and a spraying bucket for storing graphite milk fixedly arranged at the end of the rotating arm. The opening of the spraying bucket faces upward, and a plurality of nozzles communicating with its inner cavity are arranged at the bottom of the spraying bucket. A first driving mechanism for moving the spraying bucket to / from the forging station of the forging press is arranged between the movable frame and the frame, a second driving mechanism for driving the lifting frame body to lift is arranged between the lifting frame body and the movable frame, and a third driving mechanism for driving the rotating arm to rotate is arranged between the rotating arm and the lifting frame body; This spraying method includes the following steps: S1: The first driving mechanism drives the movable frame to rotate, causing the lifting frame body to approach the forging press. The angle between the rotating arm and the lifting frame body is adjusted by the third driving mechanism so that the spraying bucket is located directly below the punch of the forging press. S2: The second driving mechanism drives the lifting frame body to slide upward so that the punch is completely immersed in the graphite emulsion in the spraying bucket. S3: The graphite emulsion is sprayed downward through the nozzle onto the die of the forging press, and the spraying time is 10S - 20S. S4: After the spraying is completed, the nozzle is closed. At the same time, the second driving mechanism drives the lifting frame body to slide downward so that the punch is separated from the spraying bucket, and then the first driving mechanism and the first driving mechanism drive the lifting frame body and the rotating arm to return to their original positions.

6. The spraying method of the graphite spraying device according to claim 5, characterized in that, Step S3 also includes adding graphite emulsion into the spraying bucket through the liquid inlet pipe at the lower part of the spraying bucket, and discharging the excess graphite emulsion in the spraying bucket from the overflow pipe at the upper part of the spraying bucket.

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