JPH01167113A - Straightening method for step differenced base metal - Google Patents

Abstract

PURPOSE:To surely straighten a base metal by forming a step difference chute hole of predetermined size halfway a pipe-shaped guide path and permitting the base metal, placed in the same direction to the direction of shape of the chute hole, to drop in the hole while the base metal, placed in the reverse direction, to pass over the hole. CONSTITUTION:A pipe-shaped guide path 10 provides in its bottom halfway the path 10 a chute hole 13 to be drilled. This chute hole 13 forms its part 12 into a rectangular hole having a width a little larger than the diameter in a small contour part 2 of a base metal 3 and a length almost equal to the length of the small contour part 2. While forming a part 11 into a rectangular hole having a length almost 1/2 times the length of a large contour part 1 of the base metal 3 and a width a little larger than the diameter of the large contour part 1, the part 11 is formed being continued to the part 12. In this constitution, advancing the base metal 3 with its small contour part 2 leading, it is first placed advancing into the part 12 of the chute hole 13, successively advancing the large contour part 1 to pass through the chute hole part 11, the base metal 3 drops down. However, the base metal, placed in the reverse direction, is unable to drop down from the hole parts 11, 12, passing over being left as placed in the reverse direction. Thus the base metal can be surely straightened.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an improvement in a method for aligning stepped base materials that are materials for electrical contacts and the like.

(Prior art and its problems) Conventionally, as shown in FIG. There is a hanging method in which the small diameter part 2 is fed between the guide bars, the small diameter part 2 is dropped between the guide bars, and the large diameter part 1 is suspended between the guide bars and slides. There is a transfer method in which transfers are distributed to the left or right depending on the transfer direction on the inclined surface depending on whether the direction of the number 1 is front or back.

However, these alignment methods do not work when the ratio of the lengths of the large diameter part 1 and the small diameter part 2 of the stepped base material 3 is 1 or more, in other words, when the lengths of the large diameter part 1 and the small diameter part 2 are the same. Or, if the large diameter part 1 is longer than the small diameter part 2, it cannot be used. That is, in the case of the hanging method, the large diameter part 1 is so heavy that it turns over and falls either forward or backward, making it impossible to line up, whereas in the case of the transfer method, only the large diameter part rolls, so the direction of the large diameter part 1 is incorrect. Because there is not much difference in the direction of transfer on the slope depending on whether it is front or back, it is not possible to reliably distribute it to the left or right, and there are many things that roll in the middle (and cannot be lined up).

(Purpose of the Invention) The present invention was made to solve the above problems, and the length of the large-diameter part and the small-diameter part are the same, or the length of the large-diameter part is longer. The purpose of this invention is to provide a method that allows alignment in the direction.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the method of aligning the stepped base materials of the present invention includes:
A rectangular hole with a length approximately twice the length of the large diameter part of the stepped base material to be fed and a width slightly larger than the diameter of the large diameter part, and a small diameter hole with a length approximately equal to the length of the small diameter part of the stepped base material. A drop hole is drilled in which a rectangular hole with a width somewhat larger than the diameter of the part is continuous in the longitudinal direction, and the step base material is sequentially fed into the tubular guide path or the groove guide path in the same direction as the hole. The method is characterized in that the stepped base material is dropped through the pit hole, and the stepped base materials in the opposite direction are passed over the pit hole and aligned.

(Function) In the method for aligning stepped base materials of the present invention, when the stepped base materials sequentially fed into the tubular guide path or the V-groove guide path come to the drop hole position, the stepped base materials are oriented in the same direction as the drop hole. Since its diameter is smaller than the width of the pithole, if the large diameter part enters the large rectangular hole of the pithole by two lengths, the center of gravity will be located inside the large rectangular hole, and it will tilt due to its own weight and fall from the pithole. Since the length of the large diameter part of the reversely stepped base material is twice that of the large rectangular hole, the center of gravity is spanned over both sides of the small rectangular hole before it is located in the large rectangular hole, and the center of gravity is When it is located inside a large rectangular hole, even if it tilts, the small diameter part is locked to the edge of the large rectangular hole, so it will not fall, and when the center of gravity is located outside the large rectangular hole, it will not tilt and will be sent as is. It will be done.

Therefore, all the base materials with steps facing the opposite direction of the pithole will pass above the pithole and be aligned, and at the same time, all the base materials with steps facing the same direction as the pithole will fall into the pithole in a fixed direction and be aligned. It turns out.

(Example) An example of the method for aligning stepped base materials of the present invention will be described. As shown in Figure 2 a and b, the outer diameter is 4.5 mm and the inner diameter is 3.2 mm.
A rectangular hole 11 with a length of 4.2 mm and a width of 3.2 mm and a rectangular hole 12 with a length of 4.2 mm and a width of 2.3 mm are provided at the bottom part of the tubular guide path 10 with a length of 100 mm in the longitudinal direction. A drop hole 13 that continues concentrically is bored in the tubular guide path 10, and the large diameter part 1 has a diameter of 2.8 mm and a length of 8.55+ nm, and the small diameter part 2 has a diameter of 2.0 mm and a length. 4. Sequentially feed the stepped clad base material 3 of two cylinders in different directions, and drop the stepped clad base material 3 in the same direction as the pit hole 13 through the pit hole 13 as shown in FIGS. 3a and 3b in a fixed direction. can be aligned to
The stepped clad base material 3 in the opposite direction to the pit hole 13 is placed in the fourth
As shown in Figures a and b, it was possible to pass over the pit hole 13 and align it in a certain direction.

Next, another embodiment of the method for aligning stepped base materials of the present invention will be described. As shown in Figure 5 a and b, the width is 20 mm and the depth is 1.
0 mm and an opening angle of 120 degrees ■Length 1 with groove guide path 15
A rectangular hole 17 with a length of 4.2 mm and a width of 3.2 mm and a rectangular hole 17 with a length of 4.
．． A rectangular hole 18 with a width of 2.3 mm and a drop hole 19 are concentrically continuous in the longitudinal direction. Length 8.55mm
Stepped clad base material 3 with a diameter of 2.0 mm and a length of 4.2 mm in the small diameter part 2 is fed in order in different directions to form the pit hole 1.
Step clad base material 3 with a step in the same direction as 9 is shown in Fig. 6 a, b.
As shown in the figure, the stepped clad base material 3 can be dropped through the pit hole 19 and aligned in a certain direction, and the stepped cladding base material 3 faces in the opposite direction to the pit hole 19.
could be aligned in a certain direction by passing above the pit hole 19 as shown in FIGS. 7a and 7b.

② The stepped base material 3 passing through the groove guide path 15 was transported smoothly without wobbling.

Incidentally, the opening angle of the groove guide path 15 may be any number as long as it is 60 to 120 degrees.

(Effects of the Invention) As can be seen from the above explanation, according to the method of aligning stepped base materials of the present invention, the large diameter portion and the small diameter portion are the same length, or the large diameter portion is longer than the stepped base material. Since the materials can be sorted during transportation and reliably aligned in a certain direction, subsequent processing steps can be performed continuously, contributing to improved productivity.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a stepped base material, FIGS. 2 a and b are a vertical side view and a cross-sectional view of a tubular guideway in an embodiment of the method for aligning stepped base materials of the present invention, and FIG. 3 Figures a and b are horizontal and vertical cross-sectional views showing the step base material falling from the drop hole in the tubular guide path; FIGS. 5a and 5b are horizontal and vertical sectional views showing the state in which the material passes through, FIGS. Figures a and b are horizontal and vertical side views showing the step base material falling from the drop hole in the V-groove guideway, and Figures 7a and b are the V-groove guideway in which the stepped base material falls from the drophole. FIG. 6 is a horizontal and vertical side view showing a state in which the base material passes. Applicant Tanaka Kikinzoku Kogyo Co., Ltd. Figure 5 (b) 19... Teishi Otoshiba

Claims (1)

[Claims] A rectangular hole with a length of approximately 1/2 of the length of the large diameter part of the stepped base material to be fed and a width slightly larger than the diameter of the large diameter part is provided at the bottom part of the tubular guideway or V-groove guideway. A drop hole is formed in which a rectangular hole having a length approximately equal to the length of the small diameter portion of the step base material and a width slightly larger than the diameter of the small diameter portion is continuous in the longitudinal direction, and the tubular guide path or V groove is The base material with steps is sequentially fed into the guide path, the step base materials in the same direction as the pit hole are dropped from the pit hole, and the step base materials in the opposite direction are passed over the pit hole and aligned. How to align base materials with steps.