Roller neck lubricating device

Abstract

The utility model discloses a roller neck lubricating device, which belongs to the field of roller production equipment and comprises a lubricating oil tank arranged on the ground, the lubricating oil tank adopts a double-layer structure and is divided into an inner tank and an outer tank, the size of the inner tank is smaller than that of the outer tank, a filter screen is arranged at the bottom of the inner tank, an oil conveying main pipe is arranged in the inner tank, and an oil pump is connected onto the oil conveying main pipe. A two-way connector is connected to the main oil conveying pipe, oil distributors are arranged on brackets beside supporting tiles of the numerical control roll grinder, two oil conveying pipes separated from the two-way connector are connected to the two oil distributors of the brackets on the two sides respectively, and oil outlet pipes extending out of the oil distributors are fixed to the upper portion of a roll neck of a roll. The lubricating device is simple in structure, stable in lubricating oil flowing speed, safe and convenient to operate, high in automation degree and capable of achieving high-quality lubrication and saving lubricating oil.

Description

Technical Field

[0001] The utility model relates to the field of roller production equipment, in particular to a roller neck lubricating device. Background Art

[0002] CNC roll grinders are common equipment used in roll production. They use a support grinding method to grind rolls. When grinding the roll body, the roll necks at both ends are placed on the grinder's support pads. The support pads provide radial support for the roll necks. The babbitt alloy bearing surface between the roll neck and support pads effectively supports the weight of the roll, making the grinding process more stable and improving the surface quality. However, the large bearing area also increases the friction between the roll neck and support pads. Dry grinding of the roll neck on the support pads can cause the pads to burn and adhere to the roll neck. To combat this, lubricating oil is added to the support pads, forming an oil film between the roll neck and support pads, thereby reducing friction.

[0003] The conventional lubricating oil filling method involves installing an oil tank on each bracket, next to the support pads on either side of a CNC roll grinder. Oil outlet pipes extend from the tanks, and ball valves are used to adjust the flow rate, dripping oil onto the support pads and roll necks. However, this lubrication method presents several challenges, including unstable flow rate. Oil in the tanks drips out due to gravity, and fluctuations in the oil level cause flow rate fluctuations. Refueling the tanks is inconvenient, requiring access at a height of 1.5 meters. There is a risk of mechanical damage, as the operator's position is too close to the rotating rolls when adjusting the flow rate. There is also a risk of collision with the measuring arm, and the high location of the oil tanks occupies a large space. Furthermore, it is difficult to directly control the start and stop of oil dripping from the tanks, often requiring continuous dripping until the tank is empty, resulting in wasted lubricant. Furthermore, impurities in the lubricant inevitably affect the lubrication performance and the lubrication system itself. Therefore, a higher-quality lubrication device with stable flow rate, excellent lubrication performance, and ease of operation is needed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a roll neck lubricating device which can lubricate the roll neck, is not easy to be blocked, has a stable flow rate, is easy to operate, and is safe and convenient.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a roll neck lubrication device, including a lubricating oil tank arranged on the ground, the lubricating oil tank adopts a double-layer structure, divided into an inner box and an outer box, the inner box is smaller than the outer box, a filter is provided at the bottom of the inner box, an oil main is provided in the inner box, an oil pump is connected to the oil main, a two-way joint is connected to the oil main, an oil separator is provided on the bracket next to the support of the CNC roll grinder, the two oil pipelines separated by the two-way joint are respectively connected to the two oil separators on the brackets on both sides, and the oil outlet pipe extending from the oil separator is fixed above the roll neck of the roll.

[0006] A further improvement of the technical solution of the utility model is that an oil suction filter cover is provided at the bottom of the oil delivery main pipe.

[0007] A further improvement of the technical solution of the present invention is that: a supporting foot is provided at the bottom of the inner box, and a refueling inclined wall slanting downward from the inside to the outside is provided on one side wall of the inner box.

[0008] A further improvement of the technical solution of the utility model is that: a protection pipe in the lubricating oil barrel is connected in parallel to the oil delivery main pipe, and a one-way valve is provided on the protection pipe.

[0009] A further improvement of the technical solution of the present utility model is that a flow regulating needle valve is provided on each of the two oil pipelines branched from the two-way joint.

[0010] A further improvement of the technical solution of the utility model is that in the control system, the control coil of the oil pump motor is connected in parallel with the control coil of the CNC roll grinder motor, and the oil pump motor and the CNC roll grinder motor are started and stopped synchronously.

[0011] A further improvement of the technical solution of the utility model is that two oil outlet pipes extend from each oil distributor, and a nozzle is provided on one of the oil outlet pipes.

[0012] By adopting the above-mentioned technical solution, the present invention achieves the following technical advances: by placing the oil tank on the ground, installing the oil separator on the bracket, and pumping lubricating oil into the oil separator for delivery to the roll neck via an oil pump, refueling is more convenient and safe, eliminating the risk of collision with the measuring arm or being caught and crushed by the roller, and allowing the use of a large oil tank. Furthermore, by designing the oil tank as a double-layer structure, divided into an inner box and an outer box, the inner box being smaller than the outer box, refueling is performed inside the outer box via a support leg. A filter at the bottom of the inner box provides preliminary filtration, keeping impurities out of the inner box. The oil content in the inner box is relatively stable, and cleaning only requires the outer box. The lubricating oil can be started and stopped by controlling the oil pump, providing enhanced controllability. The oil flow rate from the oil pump is very stable, ensuring long-term, stable operation. A protective pipe with a top-to-bottom one-way valve provides backpressure overflow protection for the device. By realizing synchronous start and stop of the oil pump motor and the CNC roll grinder motor in the control system, the control can be made more automated and the situation where the rolls are not ground and the lubricating oil is not wasted will be avoided, thus effectively saving the use of lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the utility model when grinding a roller;

[0016] Among them, 1. Inner box, 2. Oil main pipe, 3. Two-way joint, 4. Flow regulating needle valve, 5. Oil separator, 6. Oil pump, 7. Filter, 8. CNC roller grinder, 9. Bracket, 10. One-way valve, 11. Inner box, 12. Filter, 13. Support foot, 14. Oiling inclined wall. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the embodiments:

[0018] Example 1:

[0019] like Figure 1Figure 1 shows a schematic diagram of a roll neck lubrication system. A CNC roll grinder 8 is a key tool for grinding rolls using the support grinding method. The support pads at each end of the CNC roll grinder provide radial support for the roll neck. Brackets 9 are located next to the support pads, and oil separators 5 are located above each bracket 9. In this embodiment, the oil separators 5 are volumetric, secured by welding. The oil outlet pipe extending from the oil separator 5 is fixed above the bracket 9. When the roll neck is placed on the bracket, the oil outlet pipe is above the roll neck, allowing dripping lubricating oil to form an oil film between the roll neck and the support pads. The large-capacity lubricating oil tank is mounted on the ground. It features a double-layer structure, consisting of an inner tank 11 and an outer tank 1. Both are rectangular parallelepipeds, with the inner tank 11 being smaller than the outer tank 1 and nested within it. The inner tank 11 has normal sidewalls, with only a filter screen installed in the middle of the bottom. Several support legs 13 are installed on the outer surface of the bottom of the inner tank 11, providing counterweight and support against the bottom of the outer tank 1, ensuring a gap between the bottoms of the inner and outer tanks. A refueling slant 14, sloping downward from the inside to the outside, is installed on one sidewall of the inner tank 11. When the inner and outer tanks 1 are nested, the sidewall of the inner tank 11 with the refueling slant 14 is positioned away from the corresponding sidewall of the outer tank 1, allowing refueling of the outer tank through the refueling slant. As the lubricating oil from the outer tank 1 penetrates through the bottom filter screen 12 into the inner tank 11, it undergoes initial filtration, blocking impurities from the inner tank 11 and, to a certain extent, confining them to the bottom of the outer tank 1, making them easier to clean. The cleanliness of the lubricating oil in the inner box 11 is ensured to be high and relatively stable, and the impurities will not make a large amount of irregular movement due to the influence of oil extraction.

[0020] An oil main pipe 2 is installed within the inner box 11. A truncated cone-shaped oil suction filter 7 is installed at the bottom of the main pipe. The bottom of the oil suction filter 7 is a filter screen that blocks debris from the lubricating oil within the inner box 11. This dual filtration greatly prevents clogging of the main pipe while ensuring lubrication. An oil pump 6 is connected to the main pipe 2 for transporting the lubricating oil. A two-way connector 3 is installed on the main pipe 2, which branches into two oil pipes. These two oil pipes are connected to two oil separators 5 on brackets 9 on either side. These two oil pipes are used to transport lubricating oil from the oil barrel to the oil separators 5 under the pressure of the oil pump, thereby continuously and controllably dripping the lubricating oil onto the roll neck. Each of the two oil pipes branching from the two-way connector 3 is equipped with a flow control needle valve 4. The flow rate, and thus the drip rate of oil from the oil separator 5, can be adjusted by manually tightening or loosening the needle valve. An electrical control unit is added to the control system. Without changing the CNC roll grinder's control circuitry, a main circuit is added. The control circuit coil of the oil pump motor is connected in parallel with the operating contactor coil circuit of the CNC roll grinder's motor 8. The oil pump motor and the CNC roll grinder motor start and stop synchronously, enabling lubrication to be applied or discontinued, thus achieving automatic control of lubrication timing. Specifically, the lubrication system's oil pump 6 motor starts and supplies oil to the oil separator only after the CNC roll grinder motor starts and begins grinding the rolls. When the CNC roll grinder motor stops and grinding ceases, the lubrication system's oil pump 6 motor also stops, ceasing oil supply to the oil separator. This ensures a high degree of automation, eliminating the need for manual on / off control of the lubrication system and preventing lubricant from being wasted due to idle oil flow when the rolls are not being ground. This system is expected to save two barrels of lubricating oil annually.

[0021] To ensure the long-term stable operation of the lubricating device, a protective pipe is installed in parallel with the oil main 2. The protective pipe is also located within the inner box 11. A one-way valve 10 is installed on the protective pipe, which is connected from top to bottom. The tail end of the protective pipe points downward to the bottom of the inner box 11, providing back pressure overflow protection. When the oil main 2 is pressurized, or the oil distributor 5 is clogged, and the lubricating oil pumped by the oil pump cannot be discharged in time, the lubricating oil pumped into the oil main 2 will pass through the protective pipe, open the one-way valve, and flow back into the inner box 11, preventing damage to the oil pipe and effectively ensuring the long-term use of the lubricating device. In this embodiment, each oil distributor 5 has two oil outlet pipes extending from it, one of which is equipped with a nozzle, while the other is normally set to drip. The combination of spray and drip lubrication achieves a better lubrication effect.

[0022] like Figure 2The figure shows an actual installation diagram for roller grinding. The roller to be ground is placed on a CNC roller grinder 8, with the roll necks at each end resting on support pads. The motor of the CNC roller grinder 8 is activated, along with the motor of the oil pump 6. The oil distributor 5 directs lubricating oil to the roll necks via an oil outlet pipe. This utility model features a streamlined structure, stable lubricating oil flow, safe and convenient operation, and high automation, achieving high-quality lubrication while conserving lubricating oil.

[0023] The embodiments described above are merely descriptions of preferred implementation methods of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A roll neck lubrication device, characterized in that: The invention comprises a lubricating oil tank arranged on the ground, the lubricating oil tank adopts a double-layer structure and is divided into an inner box (11) and an outer box (1). The inner box (11) is smaller than the outer box (1). A filter (12) is arranged at the bottom of the inner box (11). An oil delivery pipe (2) is arranged in the inner box (11). An oil pump (6) is connected to the oil delivery pipe (2). A two-way joint (3) is connected to the oil delivery pipe (2). An oil distributor (5) is arranged on a bracket (9) next to the support of a numerical control roll grinder (8). Two oil delivery pipelines separated by the two-way joint (3) are respectively connected to two oil distributors (5) on the brackets (9) on both sides. An oil outlet pipe extending from the oil distributor (5) is fixed above the roll neck of the roll.

2. A roll neck lubrication device according to claim 1, characterized in that: An oil suction filter cover (7) is provided at the bottom of the oil delivery main pipe (2).

3. The roll neck lubrication device according to claim 1, characterized in that: A supporting foot (13) is provided at the bottom of the inner box (11), and a refueling inclined wall (14) is provided on one side wall of the inner box (11) and is inclined downward from the inside to the outside.

4. The roll neck lubrication device according to claim 1, characterized in that: A protective pipeline in the inner box (11) is connected in parallel to the oil delivery main pipe (2), and a one-way valve (10) is provided on the protective pipeline.

5. The roll neck lubrication device according to claim 1, characterized in that: The two oil pipelines branched from the two-way joint (3) are each provided with a flow regulating needle valve (4).

6. The roll neck lubrication device according to claim 1, characterized in that: In the control system, the control coil of the oil pump (6) motor is connected in parallel to the control coil of the numerical control roll grinder (8) motor, and the oil pump (6) motor and the numerical control roll grinder (8) motor are started and stopped synchronously.

7. The roll neck lubrication device according to claim 1, characterized in that: Two oil outlet pipes extend from each oil distributor (5), and a nozzle is provided on one of the oil outlet pipes.

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