Lubricating device for main machine of die-cutting machine

Abstract

The utility model discloses a main machine lubricating device of a die-cutting machine, which comprises an oil tank (2), a first oil outlet (6) of the oil tank (2) is connected with an oil pump (1) through an oil pipe, the oil pump (1) can pump lubricating oil in the oil tank (2) into a cooler (3), and the main machine lubricating device of the die-cutting machine is characterized in that an overflow valve (4) is arranged corresponding to the oil outlet end of the cooler (3); the overflow valve (4) is provided with a second oil outlet (10) and a third oil outlet (9), the second oil outlet (10) is communicated with an oil inlet (7) of a lubricating oil way in a main machine through an oil pipe, and the third oil outlet (9) is communicated with an oil return opening (8) of the oil tank (2) through an oil pipe. The cooling device is simple in structure and reasonable in design, lubricating oil can be rapidly cooled, meanwhile, overflow heating is avoided, and a lubricating system is more stable and reliable.

Description

Technical Field

[0001] The utility model relates to a die-cutting machine, in particular to a mainframe lubricating device of the die-cutting machine. Background Art

[0002] A die-cutter is a device specifically designed for post-print processing of paper. Its operating principle is that after paper is fed between the upper and lower die-cutting plates, the lower die is controlled to raise the lower die-cutting plate, pressing the paper tightly between the two plates and then performing the die-cutting process. To ensure stable operation of the transmission structure that raises and lowers the lower die, a lubrication oil circuit is installed within the die-cutter mainframe to lubricate various components. The heat generated by the transmission components transfers to the lubricating oil, causing it to heat up. In actual use, if the lubricating oil temperature is too high, the lubrication effect will be reduced, affecting the normal operation of the equipment. Traditional die-cutting machines are equipped with an oil pump and a cooler, and the oil pump is used to circulate the lubricating oil between the oil tank, the cooler and the lubricating oil circuit to achieve cooling of the lubricating oil. The defects of this structure are: the oil pressure of the lubricating oil in the lubricating oil circuit generally needs to be maintained at 0.3-0.5MPa to meet the lubrication needs, so it is necessary to control the outlet volume of the oil pump by adjusting the overflow valve of the oil pump. In this way, the lubricating oil will be repeatedly circulated and pressurized in the oil pump overflow valve, causing the oil temperature to rise; in addition, in order to adapt to the above-mentioned lubricating oil pressure, this single lubricating oil circuit leads to a limited amount of oil entering the cooler, which can only achieve cooling of the oil used in the lubricating oil circuit. A large amount of lubricating oil with a higher temperature remains in the oil tank, and the cooling efficiency of the lubricating oil is not high. Utility Model Content

[0003] In view of the shortcomings of the background technology, the technical problem to be solved by the present invention is to provide a die-cutting machine mainframe lubrication device for solving the above-mentioned problems.

[0004] To this end, the present invention is implemented by adopting the following scheme:

[0005] A lubrication device for a die-cutting machine main unit includes an oil tank, a first oil outlet of the oil tank is connected to an oil pump through an oil pipe, and the oil pump can pump the lubricating oil in the oil tank into a cooler. The device is characterized in that an overflow valve is provided at the oil outlet end corresponding to the cooler, and the overflow valve is provided with a second oil outlet and a third oil outlet. The second oil outlet is connected to the oil inlet of the lubricating oil circuit in the main unit through the oil pipe, and the third oil outlet is connected to the oil return port of the oil tank through the oil pipe.

[0006] The first oil outlet and the oil return port of the oil tank are respectively arranged at two ends of the oil tank.

[0007] A pressure sensor is provided in the oil delivery pipeline of the second oil outlet, and the pressure sensor can monitor the oil pressure of the lubricating oil circuit in real time.

[0008] A die-cutting machine main engine lubrication device of the above technical solution realizes oil pressure control by arranging an overflow valve at the oil outlet end of the cooler. In this way, the overflow valve of the oil pump only serves as a safety, limiting the maximum oil output, and preventing the cooler pipeline from overpressure and overload. The overflow valve of the oil pump no longer needs to repeatedly circulate and pressurize, effectively reducing the temperature rise caused by the oil pump overflow valve; and the oil pump can pump a large amount of high-temperature lubricating oil in the oil tank into the cooler for cooling, and after the cooling is completed, the oil pressure is adjusted through the overflow valve and sent out from the second and third oil outlets respectively to realize oil circuit division, so that a part of the lubricating oil enters the lubricating oil channel for lubrication of components, and the remaining lubricating oil returns directly to the oil tank, so that the lubricating oil in the oil tank can complete a full tank cooling cycle within a few minutes, greatly improving the cooling efficiency of the lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model has the following drawings:

[0010] Figure 1 It is a structural diagram of the utility model;

[0011] Figure 2 for Figure 1 A view from another perspective;

[0012] Figure 3 for Figure 2 A view from another perspective;

[0013] Figure 4 This is a structural diagram of the cooler of the present invention. DETAILED DESCRIPTION

[0014] As shown in the figure, the utility model discloses a die-cutting machine main engine lubrication device, including an oil tank 2, a first oil outlet 6 of the oil tank 2 is connected to the oil pump 1 through an oil pipe, and the oil pump 1 can pump the lubricating oil in the oil tank 2 into the cooler 3, and an overflow valve 4 is provided at the oil outlet end corresponding to the cooler 3, and the overflow valve 4 is provided with a second oil outlet 10 and a third oil outlet 9. The second oil outlet 10 is connected to the oil inlet 7 of the lubricating oil circuit in the main engine through the oil pipe, and the third oil outlet 9 is connected to the oil return port 8 of the oil tank 2 through the oil pipe.

[0015] Furthermore, the first oil outlet 6 and the oil return port 8 of the oil tank 2 are respectively arranged at both ends of the oil tank 2, so that the lubricating oil forms a reflux in the oil tank 2, making the flow of the lubricating oil smoother and effectively taking away the heat generated by the heating components immersed in the lubricating oil.

[0016] Furthermore, a pressure sensor 5 is provided in the oil delivery pipeline of the second oil outlet 10. The pressure sensor 5 can monitor the oil pressure of the lubricating oil circuit in real time. When the oil pressure of the lubricating oil circuit is insufficient, the pressure sensor 5 will promptly feed back information to the controller. The controller will control the equipment to alarm and shut down, and wait for the oil pressure to be adjusted to the required pressure before continuing to start the machine to ensure the stability of the equipment operation.

[0017] The working principle of the present utility model is as follows: the oil pump 1 extracts the high-temperature lubricating oil in the oil tank 2 and pumps it into the cooler 3. After the lubricating oil is cooled, it is output at a constant pressure through the overflow valve 4. Part of the cooled lubricating oil is sent out through the second oil outlet 10 and enters the lubricating oil circuit in the main engine through the oil inlet 7 of the lubricating oil circuit to lubricate the internal transmission structure. The remaining lubricating oil is sent out through the third oil outlet 9 and directly sent into the oil tank 2 from the oil return port 8 of the oil tank 2, thereby realizing the cooling cycle of the lubricating oil.

[0018] The structure of the present invention realizes oil pressure control by arranging an overflow valve at the oil outlet end of the cooler. In this way, the overflow valve of the oil pump only plays a safety role, limiting the maximum oil output, and preventing the cooler pipeline from overpressure and overload. The overflow valve of the oil pump no longer needs to repeatedly circulate and pressurize, effectively reducing the temperature rise caused by the overflow valve of the oil pump; and the oil pump can pump a large amount of high-temperature lubricating oil in the oil tank into the cooler for cooling, and after the cooling is completed, the oil pressure is adjusted by the overflow valve and sent out from the second and third oil outlets respectively to realize oil circuit division, so that a part of the lubricating oil enters the lubricating oil channel for lubrication of components, and the remaining lubricating oil directly returns to the oil tank, so that the lubricating oil in the oil tank can complete a full tank cooling cycle within a few minutes, greatly improving the cooling efficiency of the lubricating oil.

Claims

1. A die-cutting machine mainframe lubrication device, comprising an oil tank (2), wherein a first oil outlet (6) of the oil tank (2) is connected to an oil pump (1) via an oil pipe, and the oil pump (1) can pump lubricating oil in the oil tank (2) into a cooler (3), characterized in that: An overflow valve (4) is provided at the oil outlet end of the corresponding cooler (3), and the overflow valve (4) is provided with a second oil outlet (10) and a third oil outlet (9). The second oil outlet (10) is connected to the oil inlet (7) of the lubricating oil circuit in the main engine through an oil pipe, and the third oil outlet (9) is connected to the oil return port (8) of the oil tank (2) through an oil pipe.

2. A die-cutting machine mainframe lubrication device according to claim 1, characterized in that: The first oil outlet (6) and the oil return port (8) of the oil tank (2) are respectively arranged at two ends of the oil tank (2).

3. The die-cutting machine mainframe lubrication device according to claim 1, characterized in that: A pressure sensor (5) is provided in the oil delivery pipeline of the second oil outlet (10), and the pressure sensor (5) can monitor the oil pressure of the lubricating oil circuit in real time.

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