JP2023104191A - Press working oil applicator - Google Patents

Abstract

To apply a proper amount of an oil to a coil material before press working easily.SOLUTION: A press working oil applicator includes: an oil tank 12 which is a container where a processing oil is accumulated; an oil pump 11 which communicates with the oil tank 12 through a first passage and is operated in a press machine 101 by vertical motion of a slide 111; and an oil application block 13 which communicates with the oil pump 11 through a second passage and has injection holes facing a surface of a coil material W. The oil application block 13 injects the liquid processing oil, which is sent from the oil tank 12 through the first passage and the second passage by the operation of the oil pump 11, from the injection holes to the surface of the coil material W.SELECTED DRAWING: Figure 1

Description

The present invention relates to press equipment.

In order to prevent the coil material from being damaged by the process, it is necessary to apply working oil (for example, Patent Document 1 below) to the coil material before the metal press process. There are three methods for applying processing oil: a dripping method, an oil supply roller method, and a spray method.

JP 2020-073662 A

However, with the dripping method, the working oil is less likely to adhere to the entire surface and cannot be applied to the lower surface of the coil material. In the lubricating roller type, a felt roller is impregnated with processing oil, and the roller is applied to the coil material to apply the processing oil, but this causes uneven coating. In the spray type, although it is easy to adhere to the coil material, it is difficult to adjust the amount of oil and the application range, and the processing oil scatters, worsening the environment and staining the press. Also, a large amount of compressed air is used.

An object of the present invention is to provide a highly convenient press working oil applicator in view of such problems.

The press working oil applicator in the first aspect of the present invention comprises:
By moving the slide to which the die is attached in the vertical direction, processing oil is applied to the coil material on the upstream side of the die in the press machine that presses the coil material sent to the die. A press working oil applicator for applying,
an oil tank, which is a container for storing the processing oil;
an oil pump that communicates with the oil tank through a first flow path and that is a pump that is operated by the vertical movement of the slide in the press machine;
an oil application block communicating with the oil pump via a second flow path and having injection holes facing the surface of the coil material;
The oil application block injects the working oil sent from the oil tank through the first flow path and the second flow path into the surface from the injection holes in a liquid state by the operation of the oil pump. characterized by

More preferably
The coil material is provided downstream of the oil application block and has an axis extending in the width direction of the coil material. and a surplus oil removing roller.

More preferably
The surplus oil removing roller has an upper surplus oil removing roller that slides on the upper surface of the coil material and a lower surplus oil removing roller that slides on the lower surface of the coil material.

More preferably
It is characterized by comprising a roller pressure adjusting mechanism that presses the upper excessive oil removing roller toward the lower excessive oil removing roller and adjusts the pressure applied by the upper excessive oil removing roller and the lower excessive oil removing roller. and

More preferably
The oil tank is arranged below the oil application block and the excess oil removing roller, and is open on the upper side.

According to the press working oil applicator according to the present invention, it is possible to easily apply an appropriate amount of oil to the coil material before press working.

1 is a schematic diagram showing a press working oil applicator, a press to which it is attached, an uncoiler, and a leveler feeder according to an embodiment of the present invention; FIG. FIG. 2 is a view taken along the line AA in FIG. 1; 1 is a perspective view of a press working oil applicator according to an embodiment of the present invention; FIG. FIG. 3 is a perspective view (a different angle from FIG. 3) of the press working oil applicator according to the embodiment of the present invention; FIG. 4 is a schematic enlarged view for explaining the oil application block in the embodiment of the present invention, corresponding to the BB arrow view of FIG. 3; FIG. 4 is a schematic enlarged view illustrating a surplus oil removing roller in an embodiment of the present invention; Fig. 4 is a flow chart explaining the operation of the press working oil applicator and the press to which it is attached according to the embodiment of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a press working oil applicator according to the present invention will be described in an embodiment with reference to the drawings.

FIG. 1 shows a press working oil applicator 1 according to this embodiment, a press machine 101 to which it is attached, an uncoiler 102 and a leveler feeder 103 . 2 is a view taken along line AA of FIG. 1. FIG.

The uncoiler 102 is a device in which a drum-shaped coiled material C is set, and which unwinds the coiled material W (while controlling deflection) and delivers it to a leveler feeder 103 .

The leveler feeder 103 is arranged downstream of the uncoiler 102 and is a device that feeds the coiled material W handed over from the uncoiler 102 to the press 101 by rotation of rolls and frictional force.

The press machine 101 is a general press machine and is arranged downstream of the leveler feeder 103 . Press 101 also includes slide 111 and bolster 112 .

The slide 111 is attached to a mechanism such as a crankshaft and a connecting rod (not shown), or a servomotor and a ball screw, thereby moving vertically. The bolster 112 is provided below the slide 111 so as to face the slide 111 .

An upper die base plate 113 of the die is attached to the slide 111, and a lower die base plate 114 of the die is attached to the bolster 112, respectively. It is possible to press the material W.

The press working oil applicator 1 is installed upstream of the upper die base plate 113 and the lower die base plate 114 in the press machine 101. As shown in the perspective views of FIGS. It has a pump 11, an oil tank 12, an oil application block 13, and surplus oil removing rollers 14A and 14B.

The oil pump 11 is a positive displacement pump such as a piston pump or a gear pump whose upper and lower ends are respectively attached to the slide 111 (upstream side of the upper die base plate 113) and the bolster 112 (upstream side of the lower die base plate 114). The vertical movement of 111 expands and contracts in the vertical direction (the internal shaft moves in the vertical direction), so that it operates as a pump.

The oil tank 12 is a container in which machining oil is stored, and one end of the flow path H1 is connected to a lower side wall position of the oil tank 12 . Also, the other end of the flow path H1 is connected to the oil pump 11 .

As shown in FIG. 5, the oil application block 13 is provided inside with an upper side surface 13A and a lower side surface 13B facing each other with a gap S in the vertical direction. Both the upper side surface 13A and the lower side surface 13B have a width longer than the width of the coil material W in the width direction of the coil material W (hereinafter simply referred to as "coil material width direction"). That is, the gap S has a width longer than the width of the coil material. Then, the coil material W fed by the leveler feeder 103 passes through this gap S before being pressed.

One end of the flow path H2 is connected to the oil application block 13. As shown in FIG. The other end of the flow path H2 is connected to the oil pump 11. As shown in FIG.

In other words, the oil pump 11 communicates with the oil tank 12 via the flow path H1, and the oil application block 13 communicates with the oil pump 11 via the flow path H2. As a result, in a state in which the oil tank 12 is filled with machining oil, the oil pump 11 operates in accordance with the vertical movement of the slide 111 to suck the machining oil from the oil tank 12 and release the machining oil. It is pressure-fed to the oil application block 13 via the flow paths H1 and H2 (see the dashed arrows in FIG. 4).

Here, the oil application block 13 will be described in detail.
The upper surface 13A of the oil application block 13 is formed with an injection hole 13C facing the upper surface W1 of the coil material W passing through the gap S, and the lower surface 13B is formed facing the lower surface W2 of the coil material W passing through the gap S. An injection hole 13D is formed.

However, the injection holes 13C and 13D are narrow holes rather than spray nozzles. In addition, although one injection hole 13C and one injection hole 13D are sufficient, a plurality of injection holes is preferable.

Inside the oil application block 13, internal flow paths H23 and H24 are provided. Each injection hole 13C is connected to the internal flow path H23, and each injection hole 13D is connected to the internal flow path H24. However, when there are a plurality of injection holes 13C, these are connected in parallel to the internal flow path H23. Similarly, even when there are a plurality of injection holes 13D, these are connected in parallel to the internal flow path H24.

One end of the flow path H2 branches into branch flow paths H21 and H22. An end portion of the branch flow channel H21 is connected to the internal flow channel H23, and an end portion of the branch flow channel H22 is connected to the internal flow channel H24.

Therefore, the working oil pressure-fed toward the oil application block 13 through the flow paths H1 and H2 by the operation of the oil pump 11 passes through the branch flow path H21 and the internal flow path H23, and flows downward from the injection hole 13C. , passes through the branch flow path H22 and the internal flow path 24, and is jetted upward from the injection hole 13D. However, as already explained, the injection holes 13C and 13D are holes rather than spray nozzles, so the working oil is injected in liquid form.

The machining oil jetted in liquid form downward from the injection hole 13C adheres to the upper surface W1 of the coil material W passing through the gap S, and the machining oil jetted in liquid form upward from the injection hole 13D adheres to the coil material passing through the gap S. It adheres to the lower surface W2 of W. At this stage, the upper surface W1 and the lower surface W2 of the coil material W are excessively coated with working oil.

The upper surplus oil removing roller 14A and the lower surplus oil removing roller 14B are, as shown in FIG. It is rotatable around 14AA and 14BA.

Further, the upper excessive oil removing roller 14A and the lower excessive oil removing roller 14B are arranged at the same position (chain line in FIG. 6) in the traveling direction of the coil material W and are in contact with each other. Then, the coil material W fed by the leveler feeder 103 (toward the upper die base plate 113 and the lower die base plate 114) passes between the upper excess oil removing roller 14A and the lower excess oil removing roller 14B so as to be in sliding contact. As a result, the upper excessive oil removing roller 14A and the lower excessive oil removing roller 14B are automatically rotated (broken line arrows in FIG. 6).

Then, as the coil material W passes through the upper excessive oil removing roller 14A and the lower excessive oil removing roller 14B while being in sliding contact with each other, the excessive working oil applied to the coil material W (in the oil application block 13) is removed. The machining oil is removed, and a thin oil film (appropriate amount of oil film) remains on the upper surface W1 and the lower surface W2 of the coil material W.

The above-described oil tank 12 is open on the upper side and is arranged below the oil application block 13 and the surplus oil removing rollers 14A and 14B.

As a result, the machining oil injected from the injection holes 13C and 13D of the oil application block 13 hits the coil material W and bounces slightly, and the upper excessive oil removing roller 14A and the lower excessive oil removing roller 14B The machining oil removed from the coil material W drops into the oil tank 12 and is recovered, and is again pumped to the oil application block 13 by the oil pump 11 to be circulated and used.

Further, as shown in FIGS. 3 and 4, the press working oil applicator 1 has a roller pressure adjusting mechanism 16 . The roller pressure adjustment mechanism 16 adjusts the pressure applied to the upper excessive oil removing roller 14A and the lower excessive oil removing roller 14B.

More specifically, the roller pressure adjusting mechanism 16 includes a pair of coil springs 16A extending in the vertical direction and connected from above to both ends in the width direction of the coil material of the axial center 14AA of the upper excess oil removing roller 14A, and A pair of adjusting screws 16B are provided to press the coil springs 16A downward from the upper ends of the coil springs 16A. That is, the roller pressure adjustment mechanism 16 presses the upper excessive oil removing roller 14A toward the lower excessive oil removing roller 14B.

By adjusting the adjusting screw 16, the roller pressure adjusting mechanism 16 can change the pressing force from the coil spring 16A to both ends of the axial center 14AA in the coil material width direction. That is, it is possible to adjust the pressure applied to the contact surface between the upper excess oil removing roller 14A and the lower excess oil removing roller 14B. Thereby, the thickness of the oil film of the processing oil can be adjusted to an appropriate amount.

Alternatively, instead of providing the roller pressure adjustment mechanism 16, dot-like depressions or linear or curved grooves may be formed on the surfaces of the upper excessive oil removing roller 14A and the lower excessive oil removing roller 14B, respectively. Then, the thickness of the oil film may be adjusted by the amount of oil remaining in the recess or groove.

Further, in the present embodiment, only one set of the pair of upper and lower excess oil removing rollers 14A and 14B is arranged on the downstream side of the oil application block 13, but the present invention is not limited to this. However, a plurality of pairs of upper and lower excess oil removing rollers 14A and lower excess oil removing rollers 14B may be provided downstream of the oil application block 13 (a plurality of pairs in the coil advancing direction). are arranged side by side). By doing so, it becomes possible to make the adhesion amount of the processing oil more uniform and to form a thin film.

The above is a description of the configuration of the press working oil applicator 1 and the press machine 101 to which it is attached. The operation of the press working oil applicator 1 and the press machine 101 to which it is attached will be described below with reference to the flow chart of FIG.

In step S<b>1 , the uncoiler 102 unwinds the coiled material W and passes it to the leveler feeder 103 .

In step S2, the coil material W is fed to the press machine 101 by the leveler feeder 103, and the coil material W passes through the gap S between the oil application blocks 13 and between the upper excessive oil removing roller 14A and the lower excessive oil removing roller 14B. pass.

In step S3, the slide 111 of the press machine 101 is operated in the vertical direction, so that the oil pump 11 is operated.

In step S<b>4 , the working oil stored in the oil tank 12 is pumped to the oil application block 13 by the oil pump 11 .

In step S<b>5 , liquid-state machining oil is injected from the injection holes 13</b>C and 13</b>D to the coil material W passing through the gap S of the oil application block 13 .

In step S6, the coil material W to which the working oil is excessively adhered passes between the upper excessive oil removing roller 14A and the lower excessive oil removing roller 14B, thereby removing the excessive working oil. The removed working oil drops into the oil tank 12 below.

In step S7, the slide 111 is vertically moved so that the upper die base plate 113 and the lower die base plate 114 press the coil material W to which an appropriate amount of oil film is adhered.

The above is a description of the operation of the press working oil applicator 1 and the press machine 101 to which it is attached.

According to the press working oil applicator 1 according to the present embodiment, the oil application block 13 applies excess working oil to the coil material W before press working, and the surplus oil removing rollers 14A and 14B remove the surplus oil. Since the oil is adjusted to be removed, the appropriate amount of oil can be adhered to the coil material W easily.

According to the press working oil applicator 1 according to the present embodiment, when removing excess working oil with the surplus oil removing rollers 14A and 14B, the working oil on the surface of the coil material W is stretched. There is no place on the surface of the coil material W where the working oil is not adhered, and a thin and uniform working oil film can be formed.

According to the press working oil applicator 1 according to the present embodiment, the excess machining oil removed by the excess oil removing rollers 14A and 14B is accumulated in the oil tank 12 disposed below and reused. Therefore, there is no waste of processing oil.

According to the press working oil applicator 1 according to the present embodiment, since the working oil injected from the injection holes 13C and 13D is in a liquid state, no oil mist is generated as in the case of a spray, so that the working environment is not contaminated. None.

According to the press working oil applicator 1 according to the present embodiment, the press machine 101 is less likely to become dirty without scattering of the working oil like spraying.

According to the press working oil applicator 1 according to the present embodiment, the oil pump 11 utilizing the vertical movement of the slide 111 of the press machine 101 is used, so energy such as compressed air and external electric power is not required.

According to the press working oil applicator according to the present embodiment, the excess oil removing rollers 14A and 14B adjust the oil film of the coil material W, so a thin and uniform oil film is formed regardless of the viscosity of the working oil used. be able to.

According to the press working oil applicator according to the present embodiment, the oil film thickness of the working oil can be freely controlled by the strength of the coil spring 16A or the shape of the recesses or grooves processed on the surfaces of the surplus oil removing rollers 14A and 14B. can be adjusted to

Further, the press working oil applicator according to the present embodiment has a configuration that can be easily installed in an existing press machine as a retrofit.

Also, in this embodiment, the oil pump 11 is used, but the present invention is not limited to this. A positive displacement pump may also be used.

Furthermore, in this embodiment, the oil tank 12 is arranged below the oil application block 13 and the excess oil removing rollers 14A and 14B, but the present invention is not limited to this. It may be installed on the side of the press machine 101 or the like. This facilitates refilling of the working oil into the oil tank 12 by the operator. However, in the case of such a configuration, a working oil receiver (a box-shaped member with an open top) is installed below the oil application block 13 and the excess oil removing rollers 14A and 14B, and the working oil receiver is provided through a flow path. and the oil tank 12 are connected.

INDUSTRIAL APPLICABILITY The present invention is suitable as an apparatus for applying working oil in press working.

1 Press work oil applicator 11 Oil pump 12 Oil tank 13 Application block 13A Upper side 13B Lower side 13C, 13D Injection hole 14A Upper surplus oil removing roller 14B Lower surplus oil removing roller 16 Roller pressure adjusting mechanism 16A Coil spring 16B Adjusting screw 101 Press machine 102 Uncoiler 103 Leveler feeder 111 Slide 112 Bolster 113 Upper die base plate 114 Lower die base plate H1, H2 Channels H21, H22 Branched channels H23, H24 Internal channel S Gap W Coil material

Claims (5)

By moving the slide to which the die is attached in the vertical direction, processing oil is applied to the coil material on the upstream side of the die in the press machine that presses the coil material sent to the die. A press working oil applicator for applying,
an oil tank, which is a container for storing the processing oil;
an oil pump that communicates with the oil tank through a first flow path and that is a pump that is operated by the vertical movement of the slide in the press machine;
an oil application block communicating with the oil pump via a second flow path and having injection holes facing the surface of the coil material;
The oil application block injects the working oil sent from the oil tank through the first flow path and the second flow path into the surface from the injection hole in a liquid state by the operation of the oil pump. A press working oil applicator characterized by: The coil material is provided downstream of the oil application block and has an axis extending in the width direction of the coil material. 2. The press oil applicator according to claim 1, further comprising an excess oil removing roller for removing excess oil. 3. The press according to claim 2, wherein the surplus oil removing roller has an upper surplus oil removing roller that slides on the upper surface of the coil material and a lower surplus oil removing roller that slides on the lower surface of the coil material. Processing oil applicator. A roller pressure adjustment mechanism is provided for pressing the upper excessive oil removing roller toward the lower excessive oil removing roller and adjusting the pressure applied by the upper excessive oil removing roller and the lower excessive oil removing roller. The press working oil applicator according to claim 3. 5. The press working oil applicator according to claim 2, wherein the oil tank is arranged below the oil applicator block and the excess oil removing roller, and is open on the upper side.

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