How to apply processing oil

Abstract

To provide a method for applying processing oil that can reduce processing oil to be used in a method for applying processing oil to a blank to be supplied to a transfer press processing device.SOLUTION: A method for applying processing oil includes a step of intermittently spraying negatively charged-fine granule processing oil to a surface of a blank 3 in transit so as to be supplied to a transfer press processing device 2 on the basis of information on an operation state of the transfer press processing device 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a method for applying processing oil, and more particularly to a method for applying processing oil to a blank material supplied to a transfer press processing device. [Background technology]

[0002] Conventionally, in order to prevent defects such as cracking and scoring in products during transfer press processing, processing oil is applied to the blank material, and then the blank material is supplied to a transfer press processing device and subjected to transfer press processing (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Jikko No. 58-40985 Summary of the Invention [Problem to be solved by the invention]

[0004] Usually, in a transfer press processing device, the processing speed (SPM) changes, and accordingly, the supply speed of the blank material supplied to the transfer press processing device also changes.

[0005] In addition, since a shortage of processing oil affects the workability in transfer press processing and makes it difficult to respond to changes in the supply speed of the blank material, processing oil is continuously applied to the blank material while the transfer press processing device is in operation, taking into account the maximum processing speed (SPM), which requires a large amount of processing oil.In addition, there is a problem that the processing oil is applied to undesired areas other than the blank material.

[0006] SUMMARY OF THE PRESENT EMBODIMENTS An object of the present invention is to provide a method for applying processing oil which solves the above problems. [Means for solving the problem]

[0007] A method for applying processing oil to a blank material to be supplied to a transfer press processing device, comprising: The position information of the rotational position of the cam used to raise and lower the press die of the transfer press processing device To Based on the above, the timing and the passing time of the blank material, which is intermittently conveyed at a predetermined feed pitch, at which the blank material passes through a specific position where spraying is possible are calculated; Based on this timing and the passage time, a constant high voltage is applied to the spray nozzle of the application section by the high voltage generator, and the solenoid valve is opened. The method is characterized in that negatively charged fine-grain processing oil is intermittently sprayed onto the surface of the blank material while it is being transported to be supplied to the transfer press processing device. Effect of the Invention

[0009] The present invention allows for a significant reduction in the amount of processing oil used compared to the above-mentioned conventional technology, by intermittently spraying negatively charged fine processing oil onto the surface of a blank material being transported to be supplied to a transfer press processing device based on information on the operating status of the transfer press processing device. [Brief description of the drawings]

[0010] [Figure 1] 1 is a schematic diagram of a conveying device using the processing oil application method of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the accompanying drawings.

[0012] [Example 1] FIG. 1 is a schematic diagram of a conveying device 1 using the processing oil application method of the present invention, and the conveying device 1 supplies a blank 3 to a transfer press processing device 2.

[0013] A plurality of blanks 3 are stacked vertically and placed on a supply table 4. The topmost blank 3 on the supply table 4 is removed by a removal section 5 and then transported to the right in FIG. 1. The position of the blank 3 in the transport device 1 and the timing of supplying the blank 3 to the transfer press working device 2 are determined based on information about the operating state of the transfer press working device 2, such as position information about the forming die and position information about the rotation position of a cam used to move the press die up and down. In this embodiment, the position of the blank 3 in the transport device 1 and the timing of supplying the blank 3 to the transfer press working device 2 are controlled based on position information about the rotation position of a cam used to move the press die up and down.

[0014] 1, the lower surface (the surface of the blank material 3) is negatively charged and finely divided fine processing oil is sprayed onto the lower surface by the lower oil application unit 10 consisting of an electrostatic oil application device, so that the entire lower surface of the blank material 3 is coated with processing oil. Next, the upper surface (the surface of the blank material 3) is negatively charged and finely divided fine processing oil is sprayed onto the upper surface by the upper oil application unit 11 consisting of an electrostatic oil application device, so that the entire upper surface of the blank material 3 is coated with processing oil.

[0015] In this embodiment, the processing oil is applied to the underside of the blank material 3 and then to the upper side, but the processing oil may be applied to the upper side and then to the lower side, or the upper and lower surfaces may be coated simultaneously.

[0016] Based on information on the operating status of the transfer press processing device 2, such as position information on the forming die and the rotational position of the cam used to raise and lower the press die, a constant high voltage is applied to the spray nozzle by the high-voltage generator, and the solenoid valve is opened to spray negatively charged fine-grain processing oil onto the blank material 3 from the spray nozzle.

[0017] More specifically, based on information on the operating status of the transfer press processing device 2, the blank material 3, which is transported intermittently at a predetermined feed pitch in accordance with the up and down movement of the processing mold of the transfer press processing device 2, is fed into the transfer press processing device 2 at the optimal timing, and based on information on the operating status of the transfer press processing device 2, the timing and passing time of the blank material 3 passing a specific position within the conveying device 1 at which it can be sprayed by the oil application sections 10, 11 are calculated, and fine-grain processing oil is sprayed onto the blank material 3 from the oil application sections 10, 11.

[0018] In this way, based on information on the operating state of the transfer press processing device 2, the oil application units 10, 11 are operated to spray fine-grain processing oil onto the blank 3. In this embodiment, the timing of opening the solenoid valves of the lower oil application unit 10 and the upper oil application unit 11 to spray fine-grain processing oil is determined based on position information on the rotational position of a cam used to raise and lower the press die.

[0019] In this embodiment, an electrostatic oil application device equipped with an electromagnetic valve, a high-voltage generator, and a spray nozzle was used as the lower oil application unit 10 and the upper oil application unit 11, but any spray device can be used as the lower oil application unit 10 and the upper oil application unit 11 as long as it is possible to spray negatively charged fine processing oil intermittently at specific timing.

[0020] According to the present invention, as described above, the lower oil application section 10 and the upper oil application section 11, which are composed of electrostatic oil application devices, spray negatively charged and finely divided fine-grained processing oil onto the blank material 3 to apply the processing oil. This ensures that the processing oil is applied to the entire surface of the blank material 3, and also significantly reduces the application of processing oil to areas other than the blank material 3.

[0021] In addition, based on information on the operating status of the transfer press processing device 2, solenoid valves (not shown) at the lower oil application unit 10 and the upper oil application unit 11 are opened to spray processing oil onto the blank material 3, thereby making it possible to significantly reduce the amount of processing oil used compared to the above-mentioned conventional technology.

[0022] In addition, by spraying negatively charged processing oil onto the surface of the blank material 3 by the lower oil application unit 10 and the upper oil application unit 11, it is possible to prevent the processing oil from scattering into the surrounding area and thereby reduce its impact on the environment. [Explanation of symbols]

[0023] 2 Transfer press processing equipment 3 Blank material 10,11 Oil application part

Claims

[Claim 1] A method for applying processing oil to a blank material to be supplied to a transfer press processing device, comprising: Calculating the timing and time for the blank material, which is intermittently transported at a predetermined feed pitch, to pass a specific position where spraying is possible, based on position information of a rotational position of a cam used to raise and lower a press die of the transfer press processing device; Based on this timing and the passage time, a constant high voltage is applied to the spray nozzle of the application section by the high voltage generator, and the solenoid valve is opened. A method for applying processing oil, comprising intermittently spraying negatively charged fine-grain processing oil onto the surface of the blank material being transported to be supplied to the transfer press processing device.

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