JP4896250B2 - Metal base circuit board chain forming method and metal base circuit board chain product - Google Patents

Description

  The present invention relates to a method for forming a chain product of metal base circuit boards and a chain product of metal base circuit boards used for metal base circuit boards for LED lighting or the like.

As a conventional chained product of metal base circuit boards, for example, there is a metal substrate material described in Patent Document 1. In particular, as shown in FIG. 4, this metal substrate material is provided with a slit along the cutting line to form a base, and this base is provided with a split groove.

  Therefore, each element substrate can be easily split and separated manually by the split groove.

  In this case, the split groove can be formed by pressing.

  However, surplus meat moves in the surface direction due to the formation of the split grooves by pressing, and the space between the element substrates extends in the surface direction.

  For this reason, when the circuit pattern is formed on each element substrate in advance, the position dimension between the circuit patterns is shifted, and there is a problem that the position of the automatic mounting of the element is hindered. .

Japanese Examined Patent Publication No. 7-77292

  The problem to be solved is that if the structure for folding is pressed, the position dimension between the circuit patterns is shifted.

  In the present invention, even when the structure for folding is pressed, the position dimensions between the circuit patterns can be maintained. A chain product forming step for forming a chain product of circuit boards each having the circuit pattern, and a notch for partial split separation by pressing on a line on which the chain product is scheduled to be split and separated And a slit forming step of forming a slit through the slit while leaving the notch on the line.

  In addition, on a line on which a circuit pattern is formed on a metal substrate through an insulating layer at a set interval, a plurality of circuit substrates each having the circuit pattern are connected, and the metal base circuit substrate is separated. A notch for partly folding is formed by pressing, and a slit formed through the line leaving the notch is formed on the line, and a burr removing portion is formed at the end of the notch by forming the slit. This is a feature of a chain product of metal base circuit boards.

  In the method for forming a chain product of metal base circuit boards according to the present invention, a chain product forming step of forming a circuit pattern on a metal substrate at a set interval via an insulating layer and forming a chain product of the circuit boards each having the circuit pattern. A notch forming step of partially forming a notch for split separation by press working on a line on which the circuit board is scheduled to be split-separated, and a slit leaving the notch on the line And a slit forming step for penetrating formation.

  For this reason, even if the notch for splitting is formed by pressing, the notch is partial, so that the surplus meat by the notch formation is restricted to the general part surrounding the notch and the movement in the surface direction is suppressed, It rises so as to protrude from the edge of the notch onto the substrate surface.

  Therefore, it is possible to prevent the circuit boards from extending in the plane direction, maintain the positional dimensions between the circuit patterns, and maintain the accuracy of automatic mounting of the elements.

  In the metal base circuit board chain product according to the present invention, a circuit pattern is formed on a metal board through an insulating layer at a set interval, and a plurality of circuit boards each having the circuit pattern are connected in series to separate the circuit boards. Forming a notch for partly splitting by press working on a line that is scheduled to be formed, and a slit formed through the line leaving the notch, and forming the slit at the end of the notch The burr removal part by this was formed.

  For this reason, it is possible to remove the burrs that appear at the end of the notch by press forming the notch by using the formation of the slits, thereby forming the burr removing portion.

  Therefore, deburring can be performed without requiring separate processing.

It is a top view of the chain product of a metal base circuit board. Example 1 FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1. Example 1 It is an expanded sectional view showing a notch. Example 1 FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 1. Example 1 It is sectional drawing of a burr | flash removal part. Example 1 It is process drawing of the chain article formation method of the metal base circuit board based on an Example of this invention. Example 1 It is a schematic sectional drawing which shows the press work of a notch formation process. Example 1 It is a top view of the chain article which shows a notch formation process. Example 1 It is a top view of the chain article which shows a slit formation process. Example 1

  Even if the structure for splitting is pressed, the notch for splitting is formed first, and then the slit is penetrated leaving the notch for the purpose of maintaining the positional dimension between each circuit pattern. Realized by forming.

[Metal-based circuit board chain]
1 is a plan view of a chained product of metal base circuit boards, FIG. 2 is a cross-sectional view taken along the line II-II in FIG. 1, FIG. 3 is an enlarged cross-sectional view showing a notch, and FIG. FIG. 5 is a cross-sectional view of the burr removing portion.

  As shown in FIG. 1 and FIG. 2, in a chain product 1 of metal base circuit boards, circuit patterns 7 are formed on a metal board 3 with an insulating layer 5 at set intervals, and each circuit board 9 includes the circuit patterns 7. There are a plurality of two in the drawing.

  The metal substrate 3 is made of iron such as SECC or silicon steel plate, and has a thickness of about 0.8 mm. The metal substrate 3 can also be formed of aluminum or the like.

  When the metal substrate 3 is made of iron, the insulating layer 5 is a so-called glass epoxy resin, and has a form in which an epoxy resin is immersed in a glass cloth that maintains strength. When the metal substrate 3 is made of aluminum, for example, an insulating layer 5 in which an inorganic filler is mixed in an epoxy resin is used.

  On the line where the circuit boards 9 and 9 are planned to be split and separated, notches 11 and 13 for splitting are partially formed on both surfaces of the metal board 3 by press working. The notches 11 and 13 are V notches having a V-shaped cross section.

  As shown in FIGS. 2 and 3, the notches 11 and 13 are partial, so that the surplus meat due to the formation of the notches 11 and 13 is restricted by the general portion 3 a surrounding the notches 11 and 13 and moves in the surface direction. Suppressed and raised so as to protrude from the edge of the notches 11 and 13 onto the surface of the substrate 3.

  As shown in FIGS. 1 and 4, slits 15, 17, and 19 are formed on the line so as to pass through the notches 11 and 13. At the end portions of the notches 11 and 13 in the line direction, burr removing portions 11a, 11b, 13a, and 13b are formed by forming the slits 15, 17, and 19.

  FIG. 5 is a cross-sectional view showing the burr removing unit. FIG. 5 shows the burr removing unit 11a as a representative, and the other burr removing units 11b, 13a, and 13b have the same shape as the burr removing unit 11a. As shown in FIG. 5, the burr removing portions 11a, 11b, 13a, and 13b are formed in a round shape as viewed from the plane, with the bulge of the meat removed by the slits 15, 17, and 19.

  Here, the length L and the thickness t of the notches 11 and 13 can be freely set as long as they can be folded. In this embodiment, considering the ease of folding, it is determined by the shear strength of the metal, and when the metal substrate 3 is made of iron, the total length L of the notches 11 and 13 is 10 of the length B of the entire folded portion. %, The thickness t is about 40% of the thickness T of the metal substrate 3, and when the metal substrate 3 is aluminum, the total length L of the notches 11 and 13 is about 30% of the total length B of the split portion. The thickness t is preferably about 40% of the plate thickness T of the metal substrate 3.

  In this embodiment, D = 22.5 mm, L = 2.5 mm, T = 0.8 mm, and t = 0.3 mm. In addition, the opening angle α of the notches 11 and 13 is not particularly limited, but is set to α = 45 degrees in the present embodiment. The width W of the slits 15, 17, and 19 is W = 3 mm, and the vertical dimension B of the chain product 1 is B = 50 mm.

  After the notches 11 and 13 are formed in the circuit patterns 7 and 7 of the chain product 1, elements are automatically mounted and can be used as, for example, a circuit for LED illumination.

The circuit boards 9 can be separated by manually breaking the notches 11 and 13.
[Metal base circuit board chain product forming method]
FIG. 6 is a process diagram of a method for forming a chain product of metal base circuit boards according to an embodiment of the present invention.

  As shown in FIG. 6, the metal-based circuit board chain product forming method includes a chain product forming step S1, a notch forming step S2, and a slit forming step S3.

  In the chain product forming step S1, circuit patterns 7 are continuously formed on the metal substrate 3 via the insulating layer 5 at set intervals to form the chain products 1 of the circuit boards 9 and 9 each having the circuit pattern 7.

  In the notch forming step S2, after the chained product forming step S1, the notches 11 and 13 for splitting are partially formed by pressing on a line where the circuit boards 9 and 9 are scheduled to be split and separated.

  In the slit forming step S3, after the notch forming step S2, the slits 15, 17, and 19 are formed through the lines leaving the notches 11 and 13 on the line.

  FIG. 7 is a schematic cross-sectional view showing the press working in the notch forming process.

  As shown in FIG. 7, the press machine 21 is a general machine and includes an upper mold 23 and a lower mold 25. The upper mold 23 includes an upper die set 23a, an upper notch punch 23b, and an upper pushback 23c, and the lower mold 25 includes a lower die set 25a, a lower notch punch 25b, and a lower pushback 25c.

  In the press working, the chain product 1 is set in the lower die 25 as shown in the figure, the upper die 23 is lowered by hydraulic pressure or the like, and the notches 11 and 13 are formed by the upper and lower notch punches 23b and 25b.

  FIG. 8 is a plan view of the chained product showing the notch forming step, and FIG. 9 is a plan view of the chained product showing the slit forming step.

  As shown in FIG. 8, in this embodiment, the chain product 1 of the circuit boards 9 and 9 is a chain product 27 formed in three sets on the metal substrate 3.

  For the chain product 27, the notches 11 and 13 shown in FIG.

  Thereafter, in the slit forming step S3, the slits 15, 17, and 19 are formed at the same time as the outer shape 29 is punched as shown in FIG.

In FIG. 8 and FIG. 9, six circuit boards 9 can be a chain product, and notches 11 and 13 can be formed between the six circuit boards 9.
[Effect of Example]
In the method for forming a chained product of metal base circuit boards according to an embodiment of the present invention, a circuit pattern 9 is formed on a metal board 3 through an insulating layer 5 at a set interval, and a chained product of circuit boards 9 each having the circuit pattern 7 is formed. 1 is formed, and a notch forming step for partially forming notches 11 and 13 for split separation on a line where the circuit board 9 is scheduled to be split and separated by press working. S2 and a slit forming step S3 in which slits 15, 17 and 19 are formed through the lines leaving the notches 11 and 13 on the line.

  For this reason, even if the notches 11 and 13 for splitting are formed by press working, the notches 11 and 13 are partial, so that the surplus meat due to the notch formation is restricted to the general portion 3a surrounding the notches 11 and 13. Therefore, the movement in the surface direction is suppressed, and the protrusions rise from the edges of the notches 11 and 13 so as to protrude onto the surface of the substrate 3.

  Accordingly, it is possible to suppress the space between the circuit boards 9 and 9 from extending in the plane direction, maintain the position dimension between the circuit patterns 7 and 7, and maintain the accuracy of automatic mounting of the elements.

  When the metal substrate 3 is made of iron, the material has hardness unlike a metal substrate made of aluminum or the like, so it is not easy to cut the groove for splitting even with a V-groove cutter which is a dedicated machine. Cannot be formed. Although it is possible to process by forming a V groove with a V groove cutter while fixing the metal substrate with bolts and supplying lubricating oil, it takes time and cost, and it is an expensive dedicated machine as a processing machine, which is not realistic .

  On the other hand, if the notches 11 and 13 are pressed, the V-notches 11 and 13 for folding can be easily formed even when the metal substrate 3 is made of iron. In addition, the cost of the circuit board 9 can be reduced.

  The metal base circuit board chain product 1 according to the embodiment of the present invention has a circuit pattern 7 formed on a metal board 3 through an insulating layer 5 at a set interval, and a plurality of circuit boards 9 each having the circuit pattern 7 are connected in series. Then, the notches 11 and 13 for folding are partially formed by pressing on the line on which the circuit board 9 is scheduled to be separated, and the notches 11 and 13 are left on the line to form a through-hole. The slits 15, 17, and 19 are provided, and burr removal portions 11 a, 11 b, 13 a, and 13 b are formed at the ends of the notches 11 and 13 by forming the slits 15, 17, and 19.

  For this reason, burrs appearing at the ends of the notches 11 and 13 are removed by forming the slits 15, 17, and 19 by pressing the notches 11 and 13 to form burrs removing portions 11 a, 11 b, 13 a, and 13 b. be able to.

  Therefore, deburring can be performed without requiring separate processing.

DESCRIPTION OF SYMBOLS 1 Chain product 3 Metal substrate 5 Insulating layer 7 Circuit pattern 9 Circuit board 11, 13 Notch 11a, 11b, 13a, 13b Deburring part 15, 17, 19 Slit S1 Chain product formation process S2 Notch formation process S3 Slit formation process

Claims (4)

A chain product forming step of forming a circuit pattern on the metal substrate at a set interval via an insulating layer to form a chain product of circuit boards each having the circuit pattern;
A notch forming step of partially forming a notch for splitting by pressing on a line on which the circuit board is scheduled to be split and separated;
A slit forming step of forming a slit penetrating leaving the notch on the line;
A method for forming a chain product of metal-based circuit boards, comprising: A method for forming a chain product of a metal base circuit board according to claim 1,
The metal substrate is made of iron.
A method for forming a chained product of metal-based circuit boards. Forming a circuit pattern at a set interval via an insulating layer on a metal substrate, and providing a plurality of circuit boards each having the circuit pattern,
Forming a notch for partly by pressing on a line on which the circuit board is scheduled to be split and separated,
A slit formed through the line leaving the notch,
The burr removal part by the said slit formation was formed in the edge part of the said notch,
A metal-based circuit board chain product. A chain product of metal base circuit boards according to claim 3,
The metal substrate is made of iron.
A metal-based circuit board chain product.