JPS59191537A - Cutting and forming die for producing twisted wire - Google Patents

Abstract

PURPOSE:To provide a titled cutting and forming die having improved formability and durability by providing internally a bearing part and a release part in a circular conical projecting part which is opened at the top end, providing an inside groove communicating with the release part to a support so as to penetrate the same and forming a cutting blade at the aperture part. CONSTITUTION:A cutting and forming die A1 for producing a twisted wire is formed integrally with a circular conical projecting part 41 which is provided with an aperture part 40 at the top end and is provided successively to the top end edge 43 of a circular cylindrical support 42. A bearing part 44 communicating with the part 40 is provided in the central axial direction of the part 41 so as to penetrate said part. A release part 46 expanding gradually from the bottom end edges 45 of the part 44 is provided successively thereto. An inside groove 48 is provided in the central axial direction of the support 42 so as to penetrate said body from the bottom end edge 47 in the release part 46. A cutting blade 49 is formed in the part 40 formed by the intersecting line of the top edge in the part 41 and the top edge in the part 44. The die construction which is provided with cutting and forming functions together with an extruding funtion and is of the shape having less resistance to a blank material is obtd. by such mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a cutting die (hereinafter also simply referred to as a die or die) for producing stranded wire.

Conventionally, the manufacturing method for stranded wire, especially annealed copper stranded wire, has been (a) wire drawing process;
(b) The annealing process and (c) The wire twisting process are separated into three processes, making the manufacturing equipment large and requiring a large installation area. The disadvantage was that the power consumption was high because the parts overlapped.

Therefore, the present applicant has developed a new stranded wire manufacturing method and device in order to serialize the wire drawing, annealing, and stranding processes, thereby downsizing the entire manufacturing process, reducing installation space, and reducing power consumption. This was proposed in 1983-1533. As shown in FIGS. 1 and 2, this device has an annular groove 3 formed between an internal rotating body 1 and an external rotating body 2 that rotate in the same direction, and The raw material 5 is continuously fed out by a fixed or rotationally movable shoe member 4 arranged in the same direction, and a plurality of strands 9 are fed out by a rotary head 8 in which a plurality of dies 6 on the raw side 5 are arranged in an annular shape. This is an apparatus for manufacturing stranded wires 11 by twisting together a plurality of strands 9 sent out from a passage 10.

However, the die 6 mounted on the rotating head 8 of the lever device
is formed into a concave shape or an inverted conical shape, and is shaped into a wire 9 of a desired diameter and fed through a passage 10 from the tip of the concave surface, and the forming of the material 5 by the die 6 is mainly done by extrusion. Since this is performed by a forming mechanism, the required power increases, and satisfactory results cannot always be obtained regarding the formability of the strands.

Therefore, the inventors of the present invention aimed to provide a molding die that can be attached to the rotating head of the continuous stranded wire manufacturing apparatus as described above, which has excellent moldability and durability, and can reduce the power required for molding. As a result of various studies, it was discovered that the above object could be achieved by providing a die structure with cutting and molding functions as well as extrusion functions, and further creating a die structure with less resistance to the material, leading to the creation of the present invention. Ta.

Conventionally, as a die having a cutting function as well as an extrusion function, for example, those shown in FIGS. 3 to 6 are known, but the die of the present invention has a structure different from any of these dies. It is.

That is, FIG. 3 shows the so-called cut-forming process (C
3(a) is a plan view thereof, and FIG. 3(b) is a front view thereof, which corresponds to the person-to-person cross section of (IL). In FIG. 3, reference numeral 12 denotes a block-shaped die that advances in the direction of arrow a, and a passage 13 for cutting products is inclined inwardly with respect to one side of the die 12, and is formed by this side and the inclined surface of the passage 13. The cutting edge 14 is used as a cutting blade, and the cutting blade 14 is pressed against the material 15 rotating in the direction of the arrow to cut the material 15.The cut material is then passed from the passage 13 to the arrow C
It sends out in the direction of.

The angles 5, 5' and 5'' are clearance angles of the die 12 with respect to the material 15. However, this type of die has an asymmetrical and complicated shape, making die fabrication difficult and expensive, making it difficult for mass production. It is not suitable as a die.

Figure 4 shows the Philaderm process (Filaderm@
16 is a die used in a process called ``Process'', which has a hole 17 in the center and a cutting edge 18 at the tip of the hole 17, which is made of an ultra-hard material such as diamond. Manufactured. In this die, by strongly pressing the cutting blade 18 at the tip of the die 16 against the material 19 rotating in the direction of arrow d, the high pressure generated causes the pores 1 in the material to be cut.
7 to extrude it as an ultrafine wire 20. Therefore, this die 16 is suitable for producing ultra-fine wires, but is not suitable for producing anything other than ultra-fine wires. In addition, since it is made of diamond, it is not suitable for processing that involves heating above warm temperatures.

Figure 5 shows the dip forming process (Dip-
This is a face-side die used in a continuous casting method called a phonoing process. The dip forming process is a wire manufacturing method in which a seed line is passed through a crucible filled with molten material, and the molten material is attached to the m-line to gradually thicken the seed line. It is attached to the crucible (not shown) in series. That is, a conical part 23 is provided at the top of the cylinder 24, an opening 22 is provided at the tip of the conical part 23 and communicates with the internal space 25 of the cylinder 24, and the peripheral edge of the opening 22 is formed into the cutting blade 21. . In addition, a notch 27 is provided on the surface of the conical portion facing the opening 22, and a release portion 26 that expands from the cutting blade 21 toward the internal space 25 is directly provided to form the cutting edge of the cutting blade 21 to be sharp. . The purpose of this die is to insert a seed wire (not shown) into the opening 22 in the direction of arrow e to remove surface oxides and deposits from the seed wire, and at the same time to seal the atmosphere inside the crucible.

FIG. 6 shows a surface-side die for wire used in pre-treatment processes such as wire drawing, in which an opening 30 communicating with the internal space 29 of the cylinder 28 is formed at the center of the upper surface of the cylinder 28 whose upper and lower surfaces are flat. A drilled disc-shaped protrusion 31 is provided, and the peripheral edge of the opening 300 is formed on the cutting blade 32, and the area from the cutting blade 32 to the internal space 29 is expanded directly from the cutting blade 32, similar to the die shown in FIG. Surusu I
It communicates via the J-space section 33. This face-side die is used for the purpose of scraping the surface of the wire pulled in the direction of arrow f with a cutting blade 32 to remove surface oxides and extra layers. The die shown in Figures 5 and 6 was originally intended for cutting the surface of a wire with a circular cross section, and it is not possible to cut the material with a large reduction (reduction rate of area) and extrude it. This is difficult and is not suitable for use as a die attached to the rotating head of the above-mentioned stranded wire manufacturing apparatus.

The present invention was completed by focusing on the problems of the conventional die, and the opening and the opening are arranged in the direction of the central axis of the columnar support which is connected to the internal one-shaped protrusion provided with the opening at the upper end. A bearing part that communicates with the molded wire and has the same cross section as that of the molded wire is provided inside, and a release part that gradually expands from the edge of the bearing part and an inner groove that communicates with the release part are provided through the protrusion part and the support body. The gist of the present invention is a cutting die for manufacturing stranded wire in which a cutting edge is formed in the opening.

Next, a die of the present invention will be explained based on drawings showing examples.

FIG. 7(a) is a plan view of the die of the present invention, and FIG. 7('b) is a front view thereof. In the figure, the main feature of the present invention is that a protrusion 41 having a horizontal opening 40 at its upper end is integrally formed with the upper edge 43 of a cylindrical support 42, and
A bearing part 44 is provided in communication with the opening part 4o and extends through the protrusion part 41 in the central axis direction, and a release part 46 that gradually expands from the lower end edge 45 of the bearing part 44 is provided in series with the release part 44. An inner groove 48 extends from the lower edge 47 of the support member 46 in the direction of the center axis of the support member 42 . Thus, a cutting edge 49 is formed in the opening 40 formed by the line of intersection between the upper edge of the protruding portion 41 and the upper edge of the bearing portion 44 . Also, Daijin 1 in Figure 7
Although the cross section of the opening 4o and the bearing portion 44 is formed to be a perfect circle, they can be formed into an appropriate shape according to the cross-sectional shape of the wire to be molded.

FIG. 8 is a partial sectional view showing a state in which the die holder of the present invention shown in FIG. 1 is attached to the rotating head 8 of the stranded wire manufacturing apparatus shown in FIG. Part 2
03, the die A1 is mounted so that its direction in the advancing direction arrow B is inclined by an angle θ of the center axis LQ of the die A1 with respect to a vertical position with respect to the contact surface 202 of the die holder 200 with the ligament feather 201. In this case, the cutting blade 49 is attached so that the entire cutting edge 49 and a part of the protrusion 41 bite into the material 201 filling the annular groove 3 facing the rotary head 8 in FIG.

When the die person 1 mounted on the die boulder 200 of the rotary head moves in the direction of arrow B together with the die boulder 200, the material 201 is cut by the cutting blade 49 of the die person 1 and is continuously fed into the bearing part 44. After being molded into a predetermined cross-sectional shape, the release part 46 and the swan 4
After eight passages, the wire is sent out from the strand passage 204 in the rotating head to the outside of the machine.

Other embodiments of the die of the present invention are shown in FIGS. 9 to 19, and in each figure (IL) is a plan view, and (b) is a front view. Dai person 1 of FIG. 7 of the embodiment shown in FIG. 9
The difference is that the cutting blade 50 is cut diagonally at the tip of the protruding part 51, and an alignment band 52 is formed on the upper side of the protruding part 51 to ensure alignment between the protruding part 51 and the cutting blade 50. In addition, notches 54 are formed on opposite sides of the columnar support 53.
It is at the point where it is formed. In addition, 55 is a bearing part, and 56 is a release part, which are constructed similarly to the die A in FIG. 7. As shown in FIG. 8, the die holder 200 of the rotary head is cut so that the obliquely cut surface of the cutting blade 50 is more perpendicular to the contact surface 202 between the material 201 and the die holder 200. By installing the device in A, the contact resistance between the cutting blade 50 and the material 201 increases.
It is possible to send a larger amount of elementary phase into the bearing portion 55 than with the die described above. Further, when feeding the same amount of material as the die person, the installation inclination angle θ of the die A2 with respect to the die holder 200 can be made small. Moreover, the support body 53
A notch 54 formed on the side surface of the die holder 200 is used for positioning when the die holder 200 is attached to the hole 203 (FIG. 8).

FIG. 10 shows another embodiment of the present invention.

The difference between the die A and the die person in FIG. 7 is that the protrusion 61
A part of the cutting edge 60 is cut out to form a receptacle 62 in the material, and notches 64 are formed on both opposing sides of the support 63, similar to the die 2 shown in FIG. . Note that 65 is a bearing portion, and 66 is a release portion, which are constructed similarly to the die A1 in FIG.

When using the die A3 of this example, the material 2 in Fig. 8 is
01 can be fed into the bearing part 65 through the receiving port 62 more than the die 2 shown in FIG.

FIG. 11 shows Daijin 4, which is another embodiment.

The difference between Daijin 4 and Daijin is that the cross-sectional shape of the cutting blade 70 and the bearing part 74 is oval, and the support body 72 is
The point is that notches 73 similar to Time 2 are formed on both opposing sides of the . In addition, 71 is a protrusion part and 75 is a release part.

When the cutting blade 70 is attached to the die holder 200 of FIG. 8 at time 4 in this embodiment at an angle θ in a direction in which the horizontal longitudinal direction of the oval of the cutting blade 70 coincides with the advancing direction B of the die, the cutting blade 70 is fed into the bearing part 74. It has the effect of alleviating the tendency for the wire cross section to flatten.

FIG. 12 shows die A of another embodiment. The difference from Daimura's die A2 shown in FIG. 9 is that the cross-sectional shape of the cutting blade 80 and bearing portion 85 is formed into a hair circle.

When using this time, the amount of material fed into the bearing part is large as in case 2 of Fig. 9, and the cross section of the strands tends to be flattened compared to the human body. Improves moldability.

In the figure, 81 is a protrusion, 82 is an alignment band, 83 is a support, 84 is a notch, and 86 is an IJ-space portion.

FIG. 13 shows die A6 of another embodiment. The difference from Daimuro's Time 3 shown in FIG. 10 is that the cutting blade 90 and bearing portion 95 have an oval cross-sectional shape. When this Daimuro is used, the effect of the die A4 in FIG. 11 is added in addition to the effect of the die A30. In the figure, 91 is a protrusion, 92 is a socket, and 9
3 is a support body, 94 is a notch portion, and 96 is an IJ-space portion.

The die A7 shown in the embodiment of FIG. 14 has a rake face 102 between the cutting edge 100 and the bearing part 101, and is otherwise constructed in the same manner as the die A1 of FIG. This rake face 102 is a tapered face formed so that the diameter gradually decreases toward the upper edge of the bearing part 101 along the peripheral edge of the cutting blade 100. By widening the angle K formed by the cutter 9, the strength against the shearing force acting on the cutting blade 100 can be reinforced and durability can be increased. In addition, 1o4 is a support body, and 105 is a release part.

The die A8 shown in the embodiment shown in FIG. 15 has a rake face 117 between the cutting edge 110 and the bearing part 115, and is otherwise similar to the time shown in FIG. 9. The action of the rake face 117 is similar to that of the time mentioned above.

In addition, 111 is a protrusion, 112 is an alignment band, 113 is a support body, 114 is a notch, and 116 is a release part.

Time 9 shown in the embodiment of FIG. 16 is similar to Time 3 in FIG. 10 except that a rake surface 127 similar to Time 7 in FIG. 14 is provided between the cutting edge 120 and the bearing part 125. It is configured.

In addition, 121 is a protruding part, 122 is a socket, 123 is a support body, 124 is a notch part, and 126 is a +71J-space part.

Die A, shown in the embodiment of FIG. is cutting blade 130
Time 4 in FIG. 11 except that a rake surface 136 similar to Time 7 in FIG. 14 is provided between the and bearing portion 134.
It is configured in the same way.

In addition, 131 is a protrusion, 132 is a support body, 133 is a notch, and 135 is an IJ lease part.

Time 1 shown in the example of FIG. is cutting blade 140
12 except that a rake surface 147 similar to die A8 in FIG. 15 is provided between the die A8 and the bearing part 145,
It is configured in the same way.

In addition, 141 is a protruding part, 142 is an alignment band, 143 is a support body, 144 is a notch part, and 146 is a release part.

The die A+2 shown in the example of Fig. 19 has a cutting edge 150.
Die A6 in FIG. 13 except that a rake surface 157 similar to that of die A in FIG.
It is configured in the same way.

In addition, 151 is a protruding part, 152 is a socket, 153 is a support body, 154 is a notch part, and 156 is a release part.

FIG. 20 (2L) shows a state in which the timer 3 shown in FIG. 1, which has a structure in which a notch is provided in the protrusion of the die A, is mounted obliquely on the die holder 200 of the rotary head in the same way as in FIG. 8. It shows. Time, 3 is the material 201 of the protrusion 161
The structure is the same as that shown in FIG. 1 except that a partial notch 165 is formed at the contact surface with the . In addition, 160 is a cutting blade, 162 is a support body, 163 is a bearing part, and 164 is a release part. The die A+3 moves in the direction of the arrow B together with the die holder 200, and the material 201 is cut by the cutting blade 160, fed into the bearing part 163, and frozen and molded.

FIG. 20(b) is a diagram showing the advancing direction of the die A13 shown in the slope as the front direction.1.This notch 16
5, the amount of deformation of the material 201 is reduced by the hunting portion α shown in the figure out of the raw amount to be pushed apart, and therefore the power required for pushing apart the raw materials can be reduced.

Such a notch provided on the protrusion surface of the die can also be applied to the dies A, 2, and 2 shown in FIGS. 9 to 19.

FIG. 21 (2L) shows a dime and 4 having the same structure as in FIG. 7 except that the length of the bearing part 173 is shortened, and is attached to the die holder 200 of the heavy-mouthed head in the same manner as in FIG. 8. There is. In this case, when the dime 14 advances in the direction of arrow B with respect to the material 201, the advancing direction is the dime when projected. Part 1γ1 and support 17
The inclination angle θ such that the intersection line 175 with 2 is the outermost point,
It is attached with. When the die is attached to the die holder with such an inclination angle, the flow resistance when passing through the protrusion 171 of the cable material 201 is reduced, and the protrusion 171
The shearing stress acting near the tip of the cutting edge 170 is relaxed, and the cutting edge 170
Since the surface approaches perpendicular to the direction of movement of the die, the component force acting on the material 201 from the tip opening of the die in the direction of the center axis also becomes a dog.

Therefore, the moldability including the roundness of the wire in the bearing part 173 is improved, so the length of the bearing part can be made shorter than that of the dime in FIG. 7, and the power required for molding can be reduced. becomes.

FIG. 21('b) is a diagram showing the advancing direction of die A+4 shown in (IL) as the front direction, and the cutting edge 170 of dime 4 is in the material with respect to the advancing direction of the die. The intersection line 1 between the protrusion 171 and the support 172 does not constitute the outermost part.
It can be seen that 75 constitutes the outermost bay.

In addition, 1ζ go 4 is IJ-su part, 1T5 is protrusion part 171
The intersection line between and the support body 172 is shown.

FIG. 22 (&) shows a die AI5 having the same structure as in FIG. 7 except that the length of the bearing part 183 is shortened and a cutout part 185 is provided at a symmetrical position of the support body 182. A state in which it is attached to the die holder 200 with an inclination angle θ1 is shown. In this case, die A+5 is in the direction of the arrow B
3. A Thai person projected in the direction of travel when moving forward. cutting edge 1
80 does not constitute the outermost part of the die in the paulownia wood 201, as in the case of FIG. decrease compared to That is, FIG. 22('b) is a diagram showing the advancing direction of the die A15 shown in FIG. is the portion shown at 186 (F), compared to the die A+4 in which the support body is not provided with a notch in FIG. Therefore, it is possible to save power for pushing the material apart corresponding to the amount of deformation β of the material.

FIG. 23(a) shows a dime with the same structure as the T prisoner, except that the length of the bearing part 193 is shortened, and the protruding parts are formed in the middle part as protruding parts 191 and 195 with different inclination angles, respectively. is shown attached to the die holder 200 with the same inclination angle θ1 as in FIG.

In this case, the inclination angle θ2 of the protrusion 191 with respect to the horizontal plane of the die is formed in the same manner as the inclination angle of the protrusion 171 of the dime 4 in FIG. The inclination angle θ is larger than the inclination angle 02 of the protrusion w portion 191, and therefore the outer diameter of the support body 192 is also the same as the dime 1. in FIG. Formed smaller.

When such a die A+6 moves in the direction of the arrow B, the protrusion 195 acts as a relief surface to reduce the contact resistance against the cable material 201, and the deformation 1 of the material 201 is significantly reduced compared to the case shown in FIG. do. That is, FIG. 23(b) shows die A! shown in (IL)! In this figure, the traveling direction of 6 is the front direction, and the part of the tangent between the protruding part 195 and the support body 192 that contacts ii'201 is the part shown in 196 and shown in FIG. dime 1
4, the amount of deformation for pushing the material 201 apart is reduced by the hatching molecule. Therefore, it is possible to save the power for pushing the material apart corresponding to the amount of deformation γ on the bare side.

As described above in detail, the die of the present invention has a cutting edge formed at the upper end opening of the conical protrusion, and a bearing part that communicates with the cutting edge and performs extrusion and shaping functions of the strands. Its structure differs from that of conventional dies in that it is equipped with a rotating head of a continuous stranded wire manufacturing apparatus as shown in Figs.
With a large reduction from the raw material supplied to the rotating head surface, it becomes possible to continuously and inexpensively provide strands with excellent appearance and formability.

In addition, dies with oblique cutting edges as shown in FIGS. 9, 12, 15, and 18, as well as dies shown in FIGS.
As shown in Fig. 16 and Fig. 19, the moldability of the cable wire is improved compared to the die shown in Fig. 7, and the bearing part is shortened with the die in which a receiving opening is formed at the upper end opening of the protruding part. By doing so, it is possible to reduce the power required for molding.

Furthermore, as shown in FIGS. 11 to 13 and 1T to 19, the dies in which the cross section of the bearing part is formed into an oval shape have an elemental shape, compared to the die in which the cross section of the bearing part is a perfect circle as shown in FIG. This has the effect of increasing the roundness of the line cross section.

Furthermore, as shown in FIGS. 14 to 19, a die in which a rake face is formed facing the cutting blade can increase the durability of the cutting blade and extend its internal life.

In addition, as shown in Fig. 20, a notch is formed in the protrusion,
In addition, a die with a short bearing portion has the effect of reducing the power required for cutting and forming, and increasing the durability of the cutting edge.

In addition, when mounting the die on the die holder by increasing the inclination angle of the die as shown in Fig. 21, compared to the mounting method shown in Fig. 8, the formability including the roundness of the strands is improved, and the bearing part etc. This has the effect of reducing the power required for cutting and shaping, and increasing the durability of the cutting edge.

Furthermore, as shown in FIGS. 22 and 23, in a die in which a notch is formed on the side surface of the support or a relief surface is formed on the protrusion,
When mounted on a die holder as shown in FIG. 21, the power required for cutting can be significantly reduced.

[Brief explanation of the drawing]

Figures 1 and 2 are partially cutaway perspective views of the cutting and forming machine part of a continuous stranded wire manufacturing device, and Figure 3 shows an example of a conventional cutting die, (a) is a plan view thereof, and (co) is a (&) Moum sectional view, Figure 4 is an explanatory diagram showing another example of a conventional cutting die,
5 and 6 are perspective views showing examples of conventional surface-side dies,
FIG. 7 shows an embodiment of the die of the present invention, in which (a) is a plan view thereof, and (b) is a front view thereof. Fig. 8 shows the state in which the die shown in Fig. 7 is attached to the rotating head of the stranded wire manufacturing device shown in Fig. 1?
The figures shown in FIGS. 9 to 19 show other embodiments of the die of the present invention, and in each figure, (a) is a plan view, and (2) is a front view. FIGS. 20 to 23 show the state in which a die according to another embodiment of the present invention is mounted on the rotary head, and in each figure (&) is a state diagram as seen from the front direction of the die; ) shows a state diagram seen from the front side of the die. DESCRIPTION OF SYMBOLS 1... Internal rotating body, 2... External rotating body, 3... Current groove, 4... Shoe member, 5... Material, 6... Dice, 8... Rotating head, 9... Bare wire, 12...
Die, 15...Material, 16...Die, 18...Cutting blade, 20...Extra fine wire, 22..." opening, 23...
Conical part, 24... Cylinder, 28... Cylinder, 30...
Opening, 32... Cutting edge, 40... Opening, 41°51
．． 61, 71, 81, 91, 103, 111°121.
131,141,151,161,171゜181.1
91,195...protrusion, 42, 53. 63.72,83,93,104,113,123゜1
32.143,153,162,172,182゜19
2...Support, 49, 50, 60, 70, 80°90
．． 100, 110, 120, 130, 140°150.
160, 170, 180, 190...cutting edge, 44.5
5,65,74,85,95,101゜115.125
,134,145,155,163,173,183,
193...bearing part, 46°56.66.75,
86,96,105,116゜126.135,146
, 156, 164, 174° 184, 194
...Release Department, 52, 82
, 112°142... matching band, 62,92,1
22,152...Uke is mouth, 54,64,73,84,
94,114°124.133,144,154,18
5... Notch, 102, 117, 121, 136, 1
47°157... rake face. Figure 17 Figure 18 (b) Figure 22 (0) Figure 23

Claims (1)

[Claims] A bearing part communicating with the opening and having the same cross section as the molded strand is provided inside in the direction of the central axis of the columnar support which is connected to a conical protrusion having an opening at the upper end, and the end of the bearing part Cutting molding for manufacturing stranded wire, characterized in that a release part that gradually expands from the edge and an inner groove that communicates with the release part are provided through the protruding part and the support body, and a cutting edge is formed in the opening part. Dai.