KR100399313B1 - Roll piercing mold for processing in strip plate - Google Patents

Abstract

The present invention relates to a roll-shaped mold used for processing a plate-like strip material, and more specifically to form a punch mold and a die mold in the form of a roll, forming a plurality of punches on the outer peripheral surface of the punching mold to form a punch mold The punch formed on the outer circumferential surface of the roll form during the processing of thin plates such as lead frames, razor blades, films, and papers made of metal plates and non-metal plate materials by performing the shearing and punching processing of strips that are in contact with each other at the same time. The present invention relates to a roll mold capable of increasing productivity by continuously producing the same.

Description

Roll mold for sheet metal processing {ROLL PIERCING MOLD FOR PROCESSING IN STRIP PLATE}

The present invention relates to a die in the form of a roll for use in processing a strip-like strip material, and more particularly in the form of a roll in the processing of a plate-like strip material such as lead frames, razor blades, films and papers made of metal and non-metal plate materials. By forming a large number of punches on the outer peripheral surface of the present invention relates to a roll mold to increase the productivity by continuously producing a large amount of products at a time.

Conventionally, a stamp-type press is mainly used for shearing or forming of thin plates such as piercing, lancing, and trimming. However, this method was difficult to produce a large number of products at one time, low productivity due to discontinuous work,

US Patent No. 4,671,092 (Formichev et al.) Describes a technique for manufacturing bevel gears by hot rolling using a roll die, while US Patent No. 4,459,880 (Giffune et al.) Is used for hot forging of tie rods. It is a method of forming steel products that are difficult to apply to the processing of precision parts or small products because they are a method of forming steel products roughly at a high temperature. It was impossible to apply.

As a method of processing a thin film form, U.S. Patent No. 6,079,654 (Sasou et al.) Provides a technique for simultaneously performing a process of trimming and punching a photographic film by a combination of a roll and a punch die. In addition, the punching operation is performed by the punch die, which leads to complicated equipment and problems in adjusting the feed speed between processes.

In the prior art, US Pat. No. 5,375,630 (Kim et al.) Provides a method of preventing the lead from being damaged by friction by installing a thin roll at the end of the mold during bending of the lead. Silver is punched by the stamping method, and the roll was used only for bending the lead.

Therefore, in the past, the stamping method or the etching method was used to process a precise and thin material such as a lead frame. Among them, the stamping method, which is a mechanical processing method, is difficult to process at one time. . However, this was a discontinuous operation and not only low productivity, but also because the position and movement interval of each linear mold movement must be exactly matched, the device was complicated and the defect was likely to occur. In order to make precise molds like IC molds, it was difficult to manufacture molds because they gave enough processing margin in advance due to heat treatment deformation and reworked and adjusted precision after heat treatment.

In addition, since the conventional molds are used by heat-treating carbon steel or tool steel or the like, when the punch mold is manufactured in a roll-shaped mold, the cutting surface cut by punching is roughly processed due to the characteristics of the material.

Another method is to manufacture a mold by powder metallurgy and sinter it. In this case, there is a problem in that deformation occurs due to non-uniformity of self-weight and temperature distribution as it is heated for a long time at high temperature for sintering.

Therefore, the present invention was created to eliminate the problems described above, unlike the conventional punch-type punch shape mainly in the form of a plurality of punches formed on the outer peripheral surface of the cylindrical roll in a single or double-acting plate by continuously It is an object of the invention to provide a roll mold that can be processed to improve productivity.

1 is a cross-sectional view of the roll mold of the present invention.

2 is a cross-sectional view showing another embodiment of the die mold of the present invention.

3 is a cross-sectional view showing another embodiment of the die mold of the present invention.

Figure 4 is a side view showing a combined state of the present invention.

* Description of the symbols for the main parts of the drawings *

1: punching mold 2: die mold

3: punch part 4: punch

5: Punch Shaft 6: Die Shaft

7: rubber roll 8: die roll

Features of the present invention for achieving the above object is to form a punch mold (1) and die mold (2) in the form of a roll, the punch portion 3 is formed with a plurality of punches (4) on the outer peripheral surface of the punching mold (1) Forming of the punch to make the punch material (1) in contact with the rotating strip material at the same time to perform the shearing and punching processing so that the punch (4) to punch the plate when the roll-shaped mold rotates to process the plate material, the punch The portion 3 is formed of a bulk amorphous material.

In this case, punches are formed on the outer circumferential surface of the punch mold 1 in order according to the processing order of the plate material. The punch forming method includes punching the punch shaft 5 first by using electric discharge machining, engraving, precision casting, mold casting and die casting. It can be manufactured integrally by the method of manufacturing, forming an uneven | corrugated part or chamfering, and injecting molten metal in the outer part, and forming the punch part 3.

In addition, the present invention is manufactured by a method in which the punch die 1 and the punch portion 3 of the outer portion and the inner punch shaft 5 are separated and manufactured by using different materials, and the outer portion of the punch portion 3 is formed inside. Make irregularities on the surface of the punch shaft or install splines, pins, etc. so as not to be separated from the punch shaft (5).

In addition, in the present invention, the rubber roll 7 is fixed to the outer circumferential surface of the die shaft 6 as the die die 2 corresponding to the punch die 1 so that the punch 4 can punch the thin plate. When the rubber roll 7 is pressed and punched out, or as shown in Figure 2 to form a discharge port (9) penetrating to the side or the center in order to facilitate the discharge without scrap or frame processing in the die mold (2) discharge outlet Blowing or suctioning the gas into the die to prevent the cutting material from accumulating in the die mold or the elastic body 12 supported by the spring 11 in the sink 10 of the die roll 8 as shown in FIG. The cutting material is discharged by installing), but the spring 11 may be performed by installing a plate spring as well as a coil spring.

The punch 4 of the punch die 1 may be formed to have a height of 3 mm or less, but preferably 1 mm or less, and a thin thickness of the sheet to be processed is suitably thin, particularly considering the quality of the cut surface. Excellent below mm If the punch height of the punch mold is 3mm or more, interference occurs with the sink 10 of the die mold 2, and the cut surface of the sheet is uneven, so that a defective product is produced.

The present invention includes both a method of arranging roll dies horizontally, a method of arranging a given inclination, and a method of arranging vertically. In particular, the vertical arrangement has the effect that the cutting material is more easily discharged.

In this case, when the punch mold 1 and the die mold 2 are combined in plural as shown in Fig. 4, in the present invention, these rolls are interlocked by connecting means such as chains, belts, timing belts, gears, and the like. It guarantees precision while performing other machining or progressive machining, and it is possible to process progressively so that multiple punches are densely placed on one roll to interfere with each other when machining complex shapes. Can solve the problem.

Such a roll mold has the advantage that piercing, lancing, trimming can be simultaneously performed in one process by shearing and bending while rotating. In addition, as the edge of the punch die 1 is cut by the rotation, the plate is gradually cut, and the portion perpendicular to the outer circumferential surface is cut once. Therefore, there is an effect that the cutting load is less than the stamping method that the whole blade is in contact at the same time. This is an advantage to save power and size of the device.

Through the following examples will be described in detail the configuration of the present invention.

The process sequence for the roll mold manufacturing using the machining process of the present invention is as follows.

Cutting → Annealing → Roughing → Turning → Curing Tempering → Finishing → Punch roll or punch granulation or die roll processing → (surface hardening heat treatment) → polishing and precision machining (or punch assembly)

In the present invention, the process sequence for the roll molding manufacturing using a precision casting process and mold casting is as follows.

Precision casting process: wax pattern or other disappearance model → refractory coating → dewax or burn out → mold material casting → mold finishing

Mold casting: Mold processing → Mold material casting → Mold finishing

The punch mold used in the present invention may be coated with a ceramic coating such as TiC, TiN, CrN, TiAlN, TiCN, TiCNO to a thickness of 1 to 5㎛ after surface finishing or surface induction hardening, if necessary. It can improve the durability.

The bulk amorphous material used by this invention is demonstrated.

In recent years, Zr-Ti-based alloys have been continuously studied for easy progress of amorphization even at a slow cooling rate. Easiness of amorphous can be predicted as Trg (reduced vitrification temperature) = Tg (vitrification temperature) / Tm (melting point), and recently discovered bulk amorphous materials have a Trg of about 0.30 to 0.67. The larger the value, the lower the cooling rate required for amorphousization, which means that it is easy to be amorphous.

The present invention is characterized in that a punch die is manufactured using an alloy having a Trg of amorphous material of 0.60 or more and a hardness of Hv450 or more. The reason is that when the Trg is less than 0.6, since the critical cooling rate is about 100 K / sec or more, it is limited because it is difficult to quench at a cooling rate higher than this when casting a mold.

For example, an alloy having a Trg of 0.60 or more, for example, Ti50-Ni15-Cu25-Sn5-Zr5 having Ti as its main component (the number after the element symbol is the atomic weight or less), Ti50-Cu20-Ni24-Si4-B2, Ti34-Zr11- Cu47-Ni8-Si1 alloy, Zr41.2-Ti13.8-Cu12.5-Ni10-Be22.5, Zr65-Al7.5-Ni10-Cu17.5, Zr56.25-Ti13.75- with Zr as main component Nb5-Ni5.5-Cu6.9-Be12.5, Zr58.5-Nb2.8-Cu15.6-Ni12.8-Al10.3, Zr60-Ni25-Al15, Zr60-Ni20-Al20, Zr65-Al7. 5-Cu2.5-TM25 (TM = Co, Ni, Cu), Zr65-Cu17.5-Ni10-Al7.5 alloys.

La-based alloys include La55-Ni20-Al25, La55-Ni20-Cu10-Al25, La55-Cu10-Ni5-Co5-Al25 alloys, and Pd40-Ni40-P20 and Ni62-Nb38 alloys.

These alloys have a tensile strength of 1500 MPa or more and a coefficient of friction with carbon steels of about 0.1 to 0.2 and 1/3 to 1/4 of steel, which is excellent in abrasion resistance. There is no particle falling off, so the linearity of the blade is excellent and the cutting surface is clean.

Therefore, in the present invention, when Zr 40-67at%, Ni 5-25at% as the first amorphous material, Ti 0-14at%, Cu 0-18at%, Al 0-20at%, Be 0-25at%, Nb 0- 3at%, Co 0-25at% alone or in combination, the remainder is composed of unavoidable impurities and bulk amorphous alloy with Trg of 0.60 or more, or Ti 30-52at%, Ni 5-25at%, Cu 18- If necessary, add 50% or more of Zr 0-12at%, Si 0-5at%, Sn 0-5at%, B 0-3at% alone or in combination, and the remainder is composed of bulk amorphous alloy with Trg of 0.60 or more, As the third amorphous material, La 50-60at%, Ni 4-25at%, Al 20-30at%, if necessary, Cu 0-12at% and Co 0-6at% are added alone or in combination, and the rest is composed of inevitable impurities and Trg A bulk amorphous alloy having a thickness of 0.60 or more, or a fourth amorphous material containing about 40at% of Pd, about 40at% of Ni, about 20at% of P, and an unavoidable impurity, and about 62at% of Ni as a fifth amorphous material or a bulk amorphous alloy having a Trg of at least 0.60. , Nb approximately 38at% The composition as inevitable impurities, and to produce a punch die punches parts of using the material in the bulk amorphous alloy is less than 0.60 Trg.

The present invention as described above has an effect of increasing the productivity and improving the precision by providing a roll-shaped mold in single or double acting to allow the plate to be processed continuously.

Claims (8)

The punch die 1 and the die die 2 are formed in a roll shape having a structure interlocked by a power transmission device, and the punch portion 3 having a plurality of punches 4 formed on the outer circumferential surface of the punching die 1 is formed. The punch die 1 performs shearing and punching at the same time, the die roll 8 is formed on the outer circumferential surface of the die die 2, and then the spring 11 in the sink 10 of the die roll 8. A roll mold for thin plates, characterized in that the cutting material is discharged by installing an elastic body (12) supported in the). (delete) 2. The roll die for thin sheets according to claim 1, wherein the cutting material of the outlet port (9) is discharged through the outlet port (9) inside the die mold (2). The roll mold for thin sheets according to claim 1, wherein the punch mold (1) and the die mold (2) are interlocked by a chain. The roll die according to claim 1, wherein the punch die (1) is formed so as to separate the punch portion (3) and the punch shaft (5), respectively. The roll die for thin sheets according to claim 1, wherein a height of the punch 4 of the punch die 1 is 1 mm or less. The roll die according to claim 1, wherein the punch portion (3) of the punch die (1) is formed of a bulk amorphous alloy. (delete)