KR200186267Y1 - Production Eguipment of Multi Gauge Strips - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing a release member strip, and in the related art, a method of cutting the thickness of both sides in a width direction with a cutting tool, a method of welding another strip by applying a strip to the center of the material, and a right angle direction of material progress by a seesaw method. Rolling method and rolling method in the direction of material progression, high defect rate and high consumption of materials, and rolling in the right direction is very low in productivity and material deformation in the width direction is almost impossible in the width direction. Therefore, by applying the tandem rolling method, there were many problems in producing small quantities of various kinds, such as requiring various specifications of the rolling rollers corresponding to large-capacity dedicated facilities and production tools.

The invention devises a flat strip in semi-circle shape while pressing the mold and press to press the both sides in the vertical direction, thereby greatly improving the amount of deformation (thinning) of the material in the width direction of the material. Material specification can be set, which can greatly reduce the material cost, make it possible to apply the general press machine, has the versatility of the equipment, and has the feature that can efficiently cope with the production of small quantities of many kinds.

Description

Production Equipment for Release Strips {Production Eguipment of Multi Gauge Strips}

The present invention is the thickness of both sides of the central portion of about 3 equal lengths in the width direction of the copper-based alloy strip (STRIPS) used in the semi-conductor lead frame or similar parts of electrical and electronic components To a device for manufacturing a release strip (MULTI GAUGE STRIPS) processed about 40% thinner than about the thickness of the middle portion.

In general, the mold release material stripping apparatus of the prior art is to leave the center of the strip intact only using the cutting tool to cut the thickness of both sides of the surface and the welding method of attaching a separate material to the center of the strip by welding, and the direction of the material progress The SEESAW method (SS) for rolling in a right angle direction and the rolling method (RL) for rolling in a material progressing direction are known as manufacturing apparatus, among which the face-cutting method is a shape and thickness that is a required standard of the finished product (P). Precision, surface roughness, straightness, hardness, etc. Only the sides of the material width of the standard width are chamfered and the thickness of the thick part (TK) and the thin part (TN) are the same. It is difficult to meet the requirements such as roughness and straightness.

The welding method also requires high temperature of 800 ℃ or higher for the instantaneous joining, and the thermal deformation is difficult to satisfy the above requirements even by the calibration of skin pass or stretching. The product manufactured by the method has a problem in that the defect rate is high and the manufacturing cost is high and the product is treated as a lower product and used.

As the improved method after the above, as shown in FIG. 1, after inserting the strip material M into the mold TL, the strip material is pressurized as a seesaw to the right and left directions RM of the material M, and then strip material. There is a seesaw method (SS) in which the material (M) is extended (forward) in the width direction to fill the space (S) in the mold (TL) by alternately performing a sequential transfer method in which (M) advances. Since the material is deformed in the perpendicular direction RA of the material M traveling direction, the directivity of the material increases the mechanical properties in the width direction of the material, and the conducting wire having a width less than 1 mm in the subsequent pressing process. It is advantageous to bend or break the surface of the bent part when forming vertically in the middle of the thick part (TK) boundary line after being processed. However, productivity is very low around 1 ~ 2m / min due to the restriction on the feed speed of the material. Especially Since the material (M) is rolled by pressurization only in the fixed state of the plane, a very large pressing force is required, and the operation direction of the rolling rollers should be done to the left and right of the material moving direction, thus requiring expensive large-scale dedicated equipment rather than general purpose equipment. There is a problem.

In addition, the rolling method (RL) illustrated in FIG. 1 as an improved method after the above refers to the material 'M' 'First roll (RL1) in the shape of the roller (R) neck (N) through the upper and lower 상 凸 type roller (R) attached to both sides of the roller (R) and then subjected to heat treatment (HT) and rolling roller ( In the tandem secondary rolling RL2 having R arranged in series, the widths L1 V1 and W1 and the thicknesses T1 and t1 formed in the primary rolling RL1 are defined as the widths L2, V2, W2) and the thicknesses (T2, t2) are molded and then received by the next roller (R) to repeat the process of forming the shape of the width (L3, V3, W3) and thickness (T3, t3), It is intended to mold the widths (L, V, W) and the thickness (T, t).

At this time, the upper surface width is narrowed to V1> V2> V3, and the width of both sides is widened to L1 <L2 <L3, and when the width is widened to W1 <W2 <W3, the center thickness is thinned to T1> T2> T3 and the thickness of both sides width is also BACKGROUND OF THE INVENTION A manufacturing technique of slitting (SLITTING.SL) is known through a molding process thinning to t1> t2> t3.

However, in the rolling method RL, the material is deformed only in the longitudinal direction of the material in which the deformation (stretching) direction of the material is the rolling direction of the rolling material, and the material in the width direction is perpendicular to the traveling direction of the material. Since the elongation to be deformed or elongated is so small as to be negligible compared to the elongation in the material advancing direction, the edges of both sides of the upper surface width (V1) are slightly narrowed by the tandem rolling method, and the entire cross-sectional volume is thinned and stretched in both width and length directions. Since the thickness and width of the material (M) is set to be larger than necessary about 1.6 times of the cross-sectional area of the finished product (P), the scraping process is performed by slitting after completion, which significantly lowers the utilization rate of the material. .

That is, the thickness of the material (M) is the thickness (T) of the center part width (V) of the finished product (P) by using a material (M) of 50% or more larger than the thickness of the finished product (P) and the width length is also larger than about 10%. The length of the width (L4), which is processed around 60% by the length of the width and the width of both sides (t), is increased by twice as long as the length of the finished product (P). When the width is shorter than the width of the finished product (P), the contact area of the material (M) is small or insufficient on the surface of the rolling roller (R). It is a reason to make it impossible.

Furthermore, in the tandem rolling method in which the rolling rollers R are arranged in series, the rolled length of the roller R is received by the secondary roller R, and the continuous rollers are subjected to continuous rolling. Done.

At this time, the length of the stretched material is increased by 1st <2nd <3rd, so that the primary, secondary, and tertiary of the rolling roller R cannot be continuously operated at the same rotational speed. R) Requires a facility with a special function to control the rotation speed, each roller (R) has a separate roller (R) stand (STAND), so it is more expensive than the equipment applied in the seesaw method (SS) There is a problem of requiring a large, dedicated equipment.

In addition, since the roller (R) used for rolling corresponds to the tool for each finished product (P) standard, it is necessary to prepare a roller (R) of various specifications in small quantities and various types, and to manage and replace the roller (R) in every standard work. There is a problem of cost increase.

The present invention deforms the flat strips in the form of circular arcs while sequentially transferring the materials using presses and molds to solve these conventional problems, and rolls the upper and both sides of the circular arcs in a vertical direction in the downward direction of the press. Providing a manufacturing apparatus that allows the body to be easily thinned and stretched even at a small pressing force in the direction perpendicular to the direction of material progress, that is, the material's width direction, so that many deformations of the material can be obtained. The purpose is to increase the utilization of the material without scrap.

Another object of the present invention is to enable a large number of deformation of the material even with a small pressing force to replace the expensive large-scale equipment or dedicated equipment with a general press equipment to generalize the production equipment.

Another object of the present invention is to enable the replacement of expensive rolling rollers, which are production tools of various specifications in small quantities and various types, with simple and inexpensive molds, and to enable the production of high-quality products by the correction of the stamping method.

1 is a schematic process diagram showing a conventional method for manufacturing a release strip material.

Figure 2 is a side view and a cross-sectional view showing an example of the manufacturing apparatus of the present invention

Figure 3 is a process chart showing the molding process by the present inventors manufacturing apparatus

Figure 4 is a partial cross-sectional view showing a molding process by the present inventors manufacturing apparatus

5 is a process chart showing another example as the manufacturing apparatus of the present invention

Explanation of symbols on the main parts of the drawings

1: Lower type 2: Upper type 12: Straight groove 11,22: Holder

3: arc X, 4,5,6: center 42,52,62: protrusion

b, c,: Semicircular 31,41,51,61: Side M: Material (material)

A, B, C, D: Mold 43: Protrusion forming part 32,32a: Incline

10,20,30: taper N, n: space 54,64: floor

53,55,63,65: flat

In the configuration for achieving the technical problem to be achieved by the present invention is composed of a vertical mold of a plurality of stages in the mold release material strip manufacturing apparatus is transported and molded between the upper and lower molds,

The upper mold forms arcs and semicircles, and the lower dies are formed in a shape corresponding to the upper dies, and the bending dies form the arcs, semicircles, and part of the curved projections, and the upper dies form semi-circles and correspond to the lower dies. The outer periphery is provided with a curved protrusion forming part and a horizontal groove on the upper end to reduce the thickness of the inner and outer circumference of the material that has passed through the bending mold, and to mold the curved protrusions on the center part, and the upper mold forms a plane, and the lower mold has the curved protrusion as described above. It is formed in a flat contact with the forming part to form a flat surface and a pre-calibration mold for straightening the curved projection formed in the molding die with a flat projection, and a flat projection groove and a plane in the center of the lower mold to form a flat projection and left and right sides Mold for cutting stamps parallel to each other, and complex cutting for shaving by attaching shaving punches to both sides of the upper face of the calibration mold Type consists of a sequential transfer machining apparatus.

Looking at the configuration of the manufacturing apparatus of the present invention based on the accompanying drawings by the embodiment as follows.

As shown in FIG. 2, the release material strip manufacturing apparatus 01 of the present invention has an upper mold 2 and a lower mold 1 having a semicircular clearance and assembled with a bending mold A and a molding mold B. Connected, the upper mold (2) and the lower mold (1) connected to the bending mold (A) and the molding mold (B) parallel to the assembled pre-correction mold (C) and calibration mold (D), the calibration mold (D) Upper die (2) It is divided into five stages by attaching shaving (SH) punches on both sides.

The bending mold (A) has an inner circumference of the upper mold (2) and an outer circumference of the lower mold (1) in a semicircular shape so that the gap gradually becomes narrower, the upper mold (2) the inner circumference forms a taper (30) and the lower mold (1) The upper periphery has a curved protrusion forming portion 43 which gradually deepens, and has a lower mold 1 having an inner periphery of the forming mold B connected to the bending mold A and a curved protrusion forming portion 43. The outer periphery of the same edge is formed on both sides of the horizontal groove 12 protrudes and attached to the pre-correction mold (C) upper die (2) connected to the molding die (B) is a downward taper 20 of the plane 55 It has an upper and lower space (n) and extends to the plane 55, the lower die (1) is the bottom surface of the curved projection forming part 43 is extended to the plane 53 and both bottom 54 surface is tapered upward in the horizontal plane ( 10) and the lower end of the upper side of the upper side of the upper side of the upper side of the upper side of the upper side of the upper side of the upper side of the upper side of the upper side of the upper side of the straightening die (C). , The opposite side surfaces the calibration die (D) mold 2 is made by attaching the shaving (SH) punch.

Sections (a, b) are curved molds (A), sections (b, c) are molds (B), sections (c, d, and e) are preliminary molds (c), and sections (e). The interval after) represents the calibration mold (D).

The operation of the present invention configured as described above will be described in detail with reference to the drawings shown in FIGS. 2, 3, and 4.

First, the flat strip material M is prepared by loading it into the raw material M supply device in a coil C0IL state.

Next, the inner molds of the upper mold 2 and the lower mold 1 are assembled with a mold having a gap of the cross sections a, b, c, d, and e as in the above-described configuration, and the press is operated. Opening the upper mold (2) and charging the prepared flat strip material (M) to the cross-section (b) position of the bending mold (A) lower mold (1) and then operates the press machine continuously.

At this time, the flat strip material (M) charged in the bending mold (A) is formed in the shape of a circular arc (3) of the same thickness round both sides of the center portion, as shown in Figure 4, both ends 31 are empty in a space state Toward the cross-section (b) position, the thickness (T1) of the circular arc (3) gradually becomes thinner as the inner peripheral radius (R) of the upper mold (2) becomes smaller than the outer peripheral radius (r) of the lower mold (1). b) The curved projection 42 equal to the thickness t1 of the lower mold 1 is formed by the stamping of the protrusion forming portion 43 of the lower mold 1, and the thickness of both sides 41 is gradually thinned to form the thickness t2 of both sides 41. On both sides of the section (a) and the section (b), both sides of the end portion 41 are elongated and formed into a semicircular shape, and the inclined surface 32 shown in FIG. Is formed.

In other words, the material M in the bending mold A is the thickness T1 of the cross section a to the thickness t1 of the cross section b, and the thickness of the cross section b to the thickness T2 of the cross section a. The amount (volume) of the material thinned in the process of forming (t2) forms a slope 32 surface, and forms an area as large as an area ΔT in the form of a triangle and the thickness of the unmolded portion is inclined (32). It is left toward the cross section (a) along the plane.

Since the molding process is performed in the pressing direction in the vertical direction of both side portions where the thickness of the material is thicker on the upper surface of the material M, the deformation (thinning) direction of the material in the width direction perpendicular to the direction of progress of the material. Because it is the same condition as that of the case, a large amount of material deformation can be achieved with a small pressing force.

In addition, since the elongation and tensile strength vary depending on the material, it can be increased by reducing the Y-axis distance corresponding to the radius of the inner and outer circumference of the upper and lower types to Y1 or Y2 when a large amount of side pressure is required on the side of the arc.

Next, as shown in FIG. 3, the inclined 32 surface formed by the curved mold A has an area ΔT that is widened to the inclined 32a surface, and is partially molded into an area Δt. It is conveyed with the curved projections 42, and at the same time the new material (M) is entered into the bending mold (A), and in this state, when the press descends, the molding mold (B) is the partially molded curved surface. Area (ㅁ T) is formed at the bottom of the projection 42 and the slope 32a, and both end portions are thinly drawn to form a straight line. In the bending mold (A), the molding is performed in the same manner as the first press lowering. Transferred to (C).

At this time, the lower end of both sides 41 of the section (b, c) of the molding die (B) is cut when the length elongated by the straight groove 12 of the lower mold 1 is overflowed. The molded part in this section has a shape similar to that of the straight-finished product P transformed into a semicircle.

Next, the material M formed in the semicircle shape transferred from the molding die B is transferred along the pre-calibration mold C space n, and the curved protrusion 42 is gradually preliminarily planeed by the taper 20. The curved projections 42 of the lower surface of the central portion 4 formed in the molding die B are straightened under the cross section d, similar to the planar projections 52 of the lower surface of the central portion 5 of the cross-section d. When preliminary correction is performed by pressing, both side portions 51 of the cross section d are deformed to a straight line in a semicircular shape and widen.

At this time, both sides of the preliminary calibration mold (C) upper mold (2) secures both spaces (N) in order to avoid interference caused by the widening of the widths of both sides (41) of the cross sections (c, d), and the lower mold (1) has a cross section (e). To guide the entry along the taper (10) easily.

Next, the material M calibrated by the planar protrusion 52 is a stationary channel for the planar protrusions 62 on both side surfaces 51 and the lower surface of the central portion 6 of the curved surface that are uncalibrated in the evicalibration mold C. The lower surface of the upper mold (2) of the straightening mold (D) is made into a flat state (65), and the lower mold (1) has a lower surface of the upper mold (2) with the flat (63) groove and the bottom (64) surface having the same cross-section as required. The shaving (SH) punches are attached to both sides and pressed with a press to precisely cut the width to obtain a finished product with high precision that satisfies specifications such as surface condition, shape, thickness precision, and straightness.

The finished product that has undergone the calibration process in the section of the cross-section (d, e) of the flat strip material (M) in the bending step forming the cross-section (a, b, c) section of the cross-sectional shape (d, e) in the calibration step After coiled and heat treated, the required hardness is adjusted before packing.

Next, the example shown in FIG. 5 is largely the same as the above-described method, and only the central portions 4, 5, and 6 have the projections 42, 52, and 62 formed on both sides of the inner circumferential center of the mold upper die 2. ) And the plane (63) grooves are molded to the outside of the material (M) is a different degree.

The present invention is not limited to the one-line operation of the embodiment described above can be carried out in a plurality of rows or more within the range of the allowable pressing force of the press machine, and the assembly state of the mold can be changed from the inverted 'U' to the 'U' shape. It may be.

According to the manufacturing apparatus of the present invention described above, the conventional seesaw method light rolling method is extremely low productivity, and the processing in the width direction, which is difficult to process, can be easily produced with a small pressing force in a general press equipment, the versatility of the equipment And economical efficiency can be provided.

In addition, since the amount of deformation of the material can be easily increased, a material having the same cross-sectional area as that of the finished product can be used, and the setting of the material can be performed without waste, thereby greatly reducing the material cost by 50% or more.

In addition, since it can be produced with a simple mold, it can easily cope with the production of small quantities of various products, and it is easy to work with, which greatly reduces the production cost, and can improve the precision of quality by the stamping method, and can be replaced by press equipment. This has many advantages, such as high productivity provided.

Claims (2)

In the apparatus for manufacturing a release strip, which is coupled to a press machine and is formed of a plurality of stages of upper and lower dies, wherein the material is transported and formed between the upper and lower dies, the upper die 2 forms an arc 3 and a semicircle b. At the same time the lower mold (1) is formed in a shape corresponding to the upper mold (2) and the bending mold (A) for forming the material (M) arc (3) and semicircle (b) shape and a part of the curved projection (42), The upper die (2) forms a semicircle (b) shape, and at the same time, the curved protrusion forming portion (43) and the horizontal groove (12) are provided at the upper edge of the lower die (1) corresponding thereto, and pass through the bending die (A). The inner and outer peripheral thicknesses (t ₁ , t ₂ ) of one material (M) and the molding die (B) for forming the curved projections 42 in the central portion (4), and the upper mold (2) forms a flat 55, the lower mold (1) is formed of a plane 55 in contact with the curved projection forming part 43, preliminary correction for correcting the curved projection 42 formed in the molding mold (B) with a planar projection (52) The mold C and the upper die 2 form a plane 65, and the lower die 1 has a plane 63 protrusion groove and a bottom 64 surface, and the plane protrusion 52 and the left and right sides 51 are pre-calibrated. ), A straight mold (D) for parallel molding, and a straight mold (D), a shaping (SH) punch attached to both sides of the mold (2), a composite molding sequential feed processing that is width cutting is made of the release strip characterized in that Manufacturing equipment. The inner peripheral radius (R) of the bending mold (A) upper mold (2) is larger than the inner peripheral radius (r) of the molding mold (B) upper mold (2) and has a taper (30). Apparatus for producing a release strip.