JPH02109699A - Cutting method for stacking metal sheet - Google Patents

Abstract

PURPOSE:To constrain the generation of a flaw on a cutting face by coating a lubrication material on one part of the faces of a side cutter opposed to the cutting face of a stacking metal sheet. CONSTITUTION:In case of cutting a stacking metal sheet 18 by the push-in of a side cutter 10, a swelling body 13 containing a lubrication material is press-fitted to one part of the faces 12 of the side cutter 10 opposed to the cutting face of the stacking metal sheet 18. In this state the lubrication material is coated on the face 12 of one part of the side cutter 10 according to the push-in movement of the side cutter 10. As a result, it can be prevented that a component knife edge is formed with the powder like body of the stacking metal sheet being sticked on this face 12, the damage of the side cutter is eliminated and the generation of a flaw on a cutting face 18a can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for cutting stacked metal sheets.

[Conventional technology] When cutting thin sheets of paper, plastic, aluminum, etc. to a predetermined size, a large number of thin sheets are stacked on top of each other, set in a cutting machine, and a single blade with one side of the cutting edge that is slanted is pushed in. The cutting method is often used.

However, depending on the material of the objects to be cut and the number of sheets stacked, deposits 27 may adhere to the blade surface of the single blade 26 that is driven in the direction of the arrow X, as shown in FIG. 3, even after cutting is performed several times. This deposit 27 causes scratches 31 on the cut surface 29 of the stack 28 of metal plates.
This will cause the cutting to occur, resulting in poor cutting.

Conventionally, in order to deal with this problem, for example, when cutting aluminum thin plates, paper laminated with polyethylene was sandwiched between the thin plates to prevent the occurrence of such deposits. ). Also known are methods in which paper containing a halide is sandwiched and stacked to enhance the lubricating effect (Japanese Unexamined Patent Publication No. 57-99647), and a method in which paper mixed with synthetic pulp is used.

(Problems to be Solved by the Invention) However, the above-mentioned polyethylene laminated paper and halide paper are not only expensive, but when polyethylene laminated paper is used, static electricity is generated when the paper is peeled off, making it difficult for workers to・There was also a problem in terms of workability, as there was a feeling of lag.

Under these circumstances, attempts have been made to insert paper mixed with inexpensive synthetic pulp between thin sheets for cutting.

However, when cutting paper mixed with synthetic pulp is sandwiched between thin sheets as described above, the blade is damaged after 2 or 3 cuts, and streak-like scratches appear on the cut surface of the stacked metal sheets. Sometimes it happened. Such scratches are caused by metal powder being baked into the back surface of the blade, that is, the surface facing the cutting surface, by the heat during cutting, resulting in a built-up edge.

[Object of the Invention] The present invention has been made to solve the problems of the prior art as described above. To provide a method for cutting stacked metal plates, which enables repeated cutting operations without causing damage to the metal plates.

[Means to solve the problem]

In order to achieve the above object, the present invention applies a lubricant to one surface of the single blade facing the cutting surface of the stacked metal plates.

Another solution to the above problem is to press a swelling body containing a lubricant onto one side of the single blade corresponding to the cutting surface of the stacked metal plate, and apply the lubricant to the one side of the single blade by pushing and moving the single blade. It is an effective means to achieve this goal.

[Function] By applying a lubricant to the one surface of the single blade, it is possible to prevent the powdery material of the stacked metal material from adhering to that surface and forming a built-up cutting edge. This prevents damage to the single blade and eliminates streak-like scratches on the cutting surface.

In addition, when a swelling body containing a lubricant is brought into pressure contact with the one surface of the single blade, the lubricant can be efficiently applied using the vertical movement of the single blade for cutting. Simplification can be achieved.

Embodiments of the present invention will be described below with reference to the drawings.

(Example) In FIGS. 1 and 2 showing an example of the present invention, a single edge 10 has a cutting edge surface 11. It has a vertical surface 12, and its blade length is 1.8 m. The single-edged lO is driven by the drive device 23.
- Driven in direction B. The drive device 23 outputs a drive signal for each drive.

The supply tank 14 stores a lubricant such as kerosene. This kerosene is supplied to the swelling member 1 via a metering pump 24.
3. The metering pump 24 is put into a pressurized state in response to a drive signal from the drive device 23, and can feed kerosene into the swelling member 13 in an amount corresponding to the number of cuts made by the single blade 10.

The swelling member 13 has an outer surface covered with fabric, and has a vertical surface 1
It has the ability to apply 4-5 g/m2 of kerosene per 2. This swelling member 1& is incorporated into the holding groove 17.

A holding groove 17 formed in the clamp 16 incorporates and fixes the swelling member 13. When cutting the clamp 16, the receiver is placed on the stand 1.
The stack 18 on top of 9 is pressed and compressed from above. The 1-day stack is made by sandwiching synthetic pulp mixed paper 33 between PS plates (Af material) 32 of printing plates and stacking them. A cutting surface 18a of the stacked object 18 is generated by cutting with the single blade 10, and is a surface that slides on the vertical surface 12. A receiver groove 21 is provided at the lower end position of the cutting operation of the single blade 10.

Hereinafter, the operation of this embodiment configured as described above will be explained.

As shown in FIG. 1, which is a sectional view of the main part in the set state, the single blade 10 is located at the position indicated by the two-dot chain line at the upper end of the cutting operation, and the lower end of the vertical surface 12 contacts the swelling member 13. are doing. This position is defined as the initial position of the single blade 10.

When the drive device 23 drives the single blade 10, the single blade 10 moves downward from the initial position. At this time, the drive device 23
The drive signal output from the metering pump 24 is supplied to the metering pump 24.

While the downward movement of the single blade 10 continues, the vertical surface 12 slides against the swelling member 13 and kerosene is applied.

When receiving the drive signal, the metering pump 24 increases the pressure and supplies a predetermined amount of kerosene to the swelling member 13, so that the swelling member 13 always contains a sufficient amount of kerosene.

When the cutting edge of the single blade 10 reaches the stack 18, it is pushed in. The object to be cut 22 cut by this pushing is pushed out by the blade edge surface 11 and becomes the state shown in the figure. Thereafter, the single blade IO rises and retreats from the front of the cutting surface 18a. Next, the stack 18 is moved by a predetermined length in the X direction, and the clamp 16 compresses the stack 18. Then, when the object to be cut 22 is collected, the single blade 10 existing at the initial position moves downward again and kerosene is replenished.

Continuous cutting can be performed by repeating such operations. When the material to be cut 18 is an aluminum sheet used for a PS plate and 200 sheets are stacked and cut, the single blade 10 is not damaged even after cutting 1000 times, and the cutting surface 18a is not damaged. No streaky wounds occurred.

In addition, the above single-edged blade with a blade length of 1.8 m and a blade displacement length of 17 cm
For O, it is preferable to apply 4 to 5 g/m'' of kerosene for each cutting process, but 1 to 8 g/m2 may be applied depending on the number of cuttings and the number of sheets to be cut 18 stacked. The amount of kerosene applied may be changed as appropriate within the range.

In addition to the above-mentioned kerosene, polyethylene glycol or the like may be used as the lubricant. In addition to cloth, felt or the like may be used as the swelling member.

〔Effect of the invention〕

As explained above, in the method of cutting stacked metal plates by pushing a single blade, a lubricant is applied to one surface of the single blade that faces the cutting surface of the stacked metal plates. Therefore, without using expensive polyethylene laminate paper or the like, it is possible to prevent damage to the single edge and to suppress the occurrence of 4° scratches on the cut surface caused by such damage.

Alternatively, a swelling body containing a lubricant may be brought into pressure contact with one surface of the single blade that faces the cutting surface of the stacked metal plate, and the lubricant may be applied to the one surface of the single blade by pushing and moving the single blade. In this case, the coating is automatically applied to the vertical surface each time the cutting operation is performed, which is very convenient.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a main part of a cutting machine to which the stacked metal plate cutting method of the present invention is applied. FIG. 2 is an exploded perspective view of the embodiment of FIG. 1. FIG. 3 is an external view showing an example of cutting by a conventional cutting machine. 18 ・ 8a 19 ・ 23 ・ 24 ・ 32 ・ 33 ・ The stacked material/cutting surface holder is a platform drive metering pump PS version (Af material) Synthetic pulp mixed folded paper.・Single edge・Blade edge surface・Vertical surface・Penetration member・Replenishment tank・Clamp

Claims (2)

[Claims] (1) A method for cutting stacked metal plates by pressing a single blade, characterized in that a lubricant is applied to one surface of the single blade facing the cutting surface of the stacked metal plates. . (2) In a method of cutting a stacked metal plate by pushing a single blade, a swelling body containing a lubricant is brought into pressure contact with one surface of the single blade facing the cutting surface of the stacked metal plate, and the single blade is cut by pushing the single blade. A method for cutting stacked metal plates, characterized in that a lubricant is applied to one side.