JPH0451001Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a mold for manufacturing male connector terminals, and more particularly to a mold used when processing wire material that is continuously supplied in the longitudinal direction and is the raw material for the male connector terminals, to manufacture male connector terminals of a predetermined length.

[Prior Art] A conventional method for manufacturing this type of male connector terminal and a mold used therein are shown in FIG.

There are various shapes of male connector terminals. Typical male connector terminals are shown in Figures 13a-e.

Taking as an example a conventional cylindrical male connector terminal with a hemispherical end as shown in FIG.
Shown in Figures a-d.

The wire rod 201 with a circular cross section that continues in the longitudinal direction is
Generally, it is wound on a reel and supplied. After the wire unwound from the reel passes through a group of deforming rollers that remove curls of the material, it is sent to a material feeding mechanism that advances the wire intermittently and linearly.

Next, as shown in FIG.
Cut by 4.

Next, the cut wire rod is shifted in the vertical direction as shown in FIG. 12b. Furthermore, it is firmly gripped by a chuck 203 or the like at a predetermined position from the cut end. Next, a mold 20 having a female recess 205 having the same shape as the end of the male connector terminal 209, which is the final product, is formed on the end of the wire 201.
7 in the axial direction.

The end of the wire 201 is inserted into the female recess 2 of the mold 207.
05, it is deformed into the same shape as the end of the male connector terminal 209, which is the final product, as shown in FIG. 12c.

Remove the mold 207 and chuck 203, and
As shown in FIG. d, the processing of the male connector terminal 209 is completed.

[Problems to be Solved by the Invention] In the conventional method for manufacturing male connector terminals described above, burrs 211 are formed near both ends of the male connector terminals 209, and these burrs are pulled into the female connector terminals. There was a drawback that the terminals for the male connector or the terminal for the female connector could be damaged.

Also, when the wire rod 201 is firmly gripped by the chuck 203 or the like, and when the mold 207 is
When pressed toward the cut end of the wire rod 201, the tin plating attached around the wire rod 201 peels off, resulting in poor corrosion resistance.

[Means for Solving the Problems] The present invention solves the drawbacks of the conventional methods described above, and produces burr-free male connector terminals in large quantities and at high speed while preventing the tin plating attached around the wire from peeling off. The object of the present invention is to provide a mold for manufacturing male connector terminals that can be manufactured.

In order to achieve the above-mentioned object, the present invention has been developed to distribute wire rods that are continuously supplied in the longitudinal direction, which are raw materials for male connector terminals, at regular intervals so that the end shape corresponds to the end shape of the male connector terminal. A mold for manufacturing a male connector terminal, which is crushed by a separable mold in which a pair of longitudinally aligned female recesses is formed, and a portion of the wire that does not fit into the female recesses is formed as a burr. , the female recess has a groove having the same cross-sectional shape as the wire, and an end formed inside the groove and having the same shape as the end shape of the final product male connector terminal. , the ends of the pair of female recesses are adjacent to each other in the longitudinal direction.

In a preferred embodiment of the invention, the wire is
A wire material for a male connector terminal, which is made by tin-plating a solid brass wire with a circular cross section of 2 mm or less in diameter, and the mold consists of a pair of upper and lower mold pieces of the same structure that can be separated, The female recess has a groove with a semicircular cross section having the same diameter as the wire, and a semicircular end formed at the inner end of the groove and having the same shape as the end shape of the male connector terminal. It is characterized by the presence of

In another preferred embodiment of the present invention, the wire is a solid wire made of brass having a square cross section with a length of 2 mm or less and is tin-plated for a male connector terminal, and the wire is molded into a mold. is made up of a pair of upper and lower mold pieces of the same structure that can be separated, and the female mold recess is a groove with a right-angled isosceles triangular cross section, and the final product is a male connector terminal formed at the inner end of this groove. It is characterized by having a semi-square pyramidal end having the same shape as the end shape of.

In another aspect of the present invention, the wire material serving as the raw material for the male connector terminal that is continuous in the longitudinal direction is continuously supplied at regular intervals, and has an end shape that corresponds to the end shape of the male connector terminal. A mold for manufacturing male connector terminals that removes warp formed by crushing with a separable mold in which a pair of female recesses aligned in the longitudinal direction is formed, and is fixed to a columnar body. A pair of reciprocally driven punching dies consisting of a punching blade shaped to remove warped burrs, and a wire rod placed in correspondence with the punching dies that accepts the wire with burrs on its upper surface. A groove formed along the direction, a pair of guide vertical holes for guiding the punching die on both sides of this groove, and a guide horizontal hole for guiding the cutting blade of the punching die inside the pair of guide vertical holes. and a lower mold having.

In a preferred embodiment of the invention, the wire is
This is a wire material for male connector terminals, which is made by tin-plating a solid brass wire with a circular cross section of 2 mm or less in diameter, and the punching die has a cutting blade with a cross section of quarter circles placed back to back. The groove formed on the upper surface of the lower mold has a semicircular cross section and has the same diameter as the wire rod.

In another preferred embodiment of the present invention, the wire is a solid wire made of brass having a square cross section with a length of 2 mm or less and is tin-plated for a male connector terminal, and The mold has a cutting blade with an isosceles triangular cross section, and the groove formed on the upper surface of the lower mold has the same cross section as a right isosceles triangle obtained by cutting the cross section of the wire diagonally. It is characterized by

[Function] As described above, in the mold for manufacturing male connector terminals according to the present invention, the female recess is a groove having the same cross-sectional shape as the wire and a final product formed at the inner end of the groove. It has an end having the same shape as that of a certain male connector terminal, and furthermore, the ends of the pair of female recesses are arranged to be adjacent to each other in the longitudinal direction. Therefore, the wire rod that is continuously supplied as the raw material for the longitudinally continuous male connector terminal is
When pressed using a separable mold in which a pair of female recesses as described above are formed at regular intervals,
The portion of the wire that does not fit into the female recess is crushed and formed as a burr.

Furthermore, in the mold for manufacturing male connector terminals according to the second aspect of the present invention, a pair of reciprocating drives comprising a columnar body and a punching blade having a shape capable of warping off burrs fixed to the columnar body is provided. and a punching die, which is placed opposite the punching die.
A groove is formed along the traveling direction of the wire to receive the wire with burrs on the upper surface, a pair of guide vertical holes for guiding the punching die are formed on both sides of the groove, and the above-mentioned guide hole is formed inside the pair of guide vertical holes. It consists of a lower mold having a guide horizontal hole for guiding the cutting blade of the punching mold. Therefore, with the mold for manufacturing male connector terminals according to the first aspect of the present invention, burrs formed on the wire at regular intervals are reliably warped.

[Example] Hereinafter, a continuous processing machine using molds for manufacturing male connector terminals according to the first and second aspects of the present invention will be described with reference to the drawings.

FIG. 1 is a front view of an embodiment of a continuous processing machine using molds for manufacturing male connector terminals according to the first and second aspects of the present invention.

FIG. 2 is an exploded perspective view of an embodiment of a mold for manufacturing male connector terminals according to the first and second aspects of the present invention.

FIG. 3 is a plan view of the mold for manufacturing male connector terminals according to the first aspect of the present invention shown in FIG. 2.

FIG. 4 is a side view of the mold for manufacturing male connector terminals shown in FIG. 3.

FIG. 5 is a plan view of the mold for manufacturing male connector terminals according to the second embodiment of the present invention shown in FIG. 2.

6 is a side view of the mold for manufacturing male connector terminals shown in FIG. 5. FIG.

FIG. 7 is an exploded perspective view of another embodiment of the mold for manufacturing male connector terminals according to the first and second aspects of the present invention.

FIG. 8 is a plan view of the mold for manufacturing male connector terminals according to the first aspect of the present invention shown in FIG. 7.

FIG. 9 is a side view of the mold for manufacturing male connector terminals shown in FIG. 8.

FIG. 10 is a plan view of the mold for manufacturing male connector terminals according to the second embodiment of the present invention shown in FIG. 7.

FIG. 11 is a side view of the mold for manufacturing male connector terminals shown in FIG. 10.

As shown in FIG. 1, the wire 3 is wound onto a reel 1 and supplied. In the first embodiment shown in FIGS. 2 to 6, the wire 3 is made of a wire for a male connector terminal, which is a solid brass wire with a circular cross section of 2 mm or less in diameter and plated with tin. ing.

A reel 1 on which a wire rod 3 is wound is rotatably mounted on a blanket 7 mounted above a main body 5 of the apparatus. Wire rod 3 unwound from reel 1
is guided by a semi-circular guide pipe 9 and sent to a group of deforming rollers 11 and 13. Scratching roller group 11
is a group of curl removal rollers for removing curls in the vertical direction of the wire rod 3, and a group 3 of curl removal rollers 13 is a group of rollers for removing curls in the horizontal direction of the wire rod 3.

The wire rod 3 passed through the straightening roller groups 11 and 13 is
Next, the wire rod 3 is sent to a material feed mechanism 15 that advances the wire rod 3 intermittently and linearly.

The material feeding mechanism 15 includes a cam 19 fixed to a rotating shaft 17 that is drivingly connected to a rotational drive source (not shown), a cam follower 21 that is always in contact with the cam 19, and a cam follower 21 at one end. It rotatably supports the follower 21 and has a protrusion 23 at the other end.
a lever 27 that is swingably mounted around a fixed shaft 25 having a fixed shaft 25; a swing member 31 that reciprocates in the vertical direction while maintaining horizontality and has a recess 29 that receives the protrusion 23 of the lever 27; installed between the device main body 5,
A pair of arms 33 that together constitute a parallelogram crank mechanism, a crank 37 fixed to a rotating shaft 35 drivingly connected to a rotational drive source (not shown), and a crank 37 provided at the free end of the crank 37. An L-shaped lever 45 has a U-shaped groove 41 for receiving a protrusion 39 and is mounted so as to be able to reciprocate in the horizontal direction along the table 43 of the device main body 5, and an L-shaped lever 45 is mounted on the horizontal arm 47 of the L-shaped lever 45 in a vertical direction. A block 49 is attached to be able to reciprocate, a compression spring (not shown) that presses the block 49 upward, and a roller 4 that is rotatably attached to the block 49 and comes into contact with the lower surface of the swing member 31.
It consists of 8.

Wire rod 3 after being passed through the straightening roller groups 11 and 13
is passed between the horizontal arm 47 of the L-shaped lever 45 of the material feed mechanism 15 and the block 49. L
The letter-shaped lever 45 reciprocates in the horizontal direction along the table 43 of the device main body 5 with each rotation of the crank 37. On the other hand, the block 49 reciprocates in the vertical direction with each rotation of the cam 19. And block 49
The timing is set so that the L-shaped lever 45 moves forward when the wire rod 3 is lowered and the wire rod 3 is clamped. The feed length of the wire 3 is determined by the length of time during which the block 49 descends and holds the wire 3.

The wire 3 passed through the material feeding mechanism 15 is further passed through a plurality of press working mechanisms 5 which are arranged in parallel along the feeding direction of the wire 3 and which perform various processing on the material.
Sent to 1, 53, 55.

The intervals between the press working mechanisms 51, 53, and 55 along the traveling direction of the wire rod 3 can be changed according to the cutting length of the wire rod 3, as will be explained in detail later.

The press working mechanism 51 is a forming press that processes the wire 3 at predetermined intervals to form the same shape as the end shape of the final product, the male connector terminal.

The press working mechanism 51 includes a cam 59 fixed to a rotating shaft 57 drivingly connected to a rotational drive source (not shown), a pair of parallel guides 61 fixed vertically to the device main body 5, and a pair of parallel guides 61 fixed to the device main body 5 in the vertical direction. a cam follower 65 that is rotatably attached to the block 63 and is always in contact with the cam 59; A holder 67 is detachably fixed to the holder 67 and is guided by a pair of parallel guides 61 so as to be able to reciprocate vertically, and a mold 69 is fixed to the holder 67.
, a pair of parallel guides 71 fixed vertically to the device body 5, a holder 73 detachably fixed to the guide 71, and a pair of guides 71 fixed to the holder 73 shown in FIGS. 2 to 4. mold 69
and a mold 75 having the same shape.

As shown in detail in FIGS. 3 and 4, the mold 75 has grooves 77, 79 having a semicircular cross section having the same diameter as the wire 3, and a final groove provided between the grooves 77, 79. It has hemispherical end portions 81 and 83 having the same shape as the end shape of the male connector terminal as a product.

The wire rod 3 passed through the material feeding mechanism 15 is passed between the molds 69 and 75 of the press working mechanism 51, and is fixed to a holder 67 that reciprocates in the vertical direction with each rotation of the cam 59. The mold 69 thus formed and the mold 75 fixed are formed into the same shape as the end shape of the male connector terminal which is the final product, and a burr 93 is formed.

The press working mechanism 53 is a warping/cutting press that removes burrs 93 generated by press working by the press working mechanism 51 and cuts the front and rear male connector terminals 127 from each other.

The press working mechanism 53 includes a cam 97 fixed to a rotating shaft 95 that is drivingly connected to a rotational drive source (not shown), a pair of parallel guides 99 fixed vertically to the device main body 5, and a pair of parallel guides 99 fixed to the device main body 5 in the longitudinal direction. A block 101 is guided by a parallel guide 99 and is mounted so as to be able to reciprocate vertically, a cam follower 103 is rotatably mounted to the block 101 and is always in contact with the cam 97, and a lower part of the block 101. Suspenders 107 are removably fixed to arbitrary holes of holes 105 provided at intervals along the traveling direction of the wire rod 3;
A holder 109 is attached so as to be movable in the lateral direction, a pair of punching dies 111 as shown in FIGS. 2 and 5 to 6 are fixed to the holder 109, and The lower mold 113 is fixed to the device main body 5 so as to be movable along the traveling direction.

Of the pair of parallel guides 99 fixed to the device main body 5 in the vertical direction, the left guide 99 is shared with the guide 61 in the illustrated embodiment.

The relationship between the pair of punching dies 111 and the lower die 113 will be explained in detail with reference to FIG. 2.

Each punching die 111 includes a rectangular columnar body 115 and a punching blade 117 fixed to the upper part of the body 115. As shown in FIG. 5, the tip of the punching blade 117 has a cross section of a quarter-circular shape placed back to back.

On the other hand, the lower mold 113 has a rectangular parallelepiped main body 119
and flanges 121 extending on both sides of the lower part of the rectangular parallelepiped main body 119. Rectangular parallelepiped body 1
A groove 122 having a semicircular cross section is provided on the upper surface of the wire rod 19 along the traveling direction of the wire rod 3 .
The rectangular parallelepiped main body 119 has a vertical hole 124 on both sides of the groove 122 that receives the rectangular columnar main body 115 of the punching die 111 so as to be slidable in the vertical direction, and
It has a small hole 126 that receives the punching blade 117 so as to be slidable in the vertical direction.

As shown in detail in FIG.
2 has an overhang 123 that protrudes into the pore 126. Therefore, the burr 93 produced by the press working by the press working mechanism 51 is reliably warped off because the wire 3 is supported by the groove 122 having the overhang 123 up to its boundary.

The flange 121 also has a pair of bolt holes 130 into which bolts 128 are inserted.

A long hole 132 extending in the direction of movement of the wire 3 is provided in the device body 5 below the lower mold 113.

The lower mold 113 and the punching mold 111 can be moved and fixed to arbitrary positions by the bolts 128 and nuts 134, and therefore the press working mechanism 51 and the press working mechanism 53 can be moved to any desired position and fixed therein. The spacing along the direction can be changed arbitrarily.

In this way, the wire 3 passed through the press working mechanism 51 is passed between the lower die 113 and the punching die 111 of the press working mechanism 53, and the cam 97
Holder 10 that reciprocates in the vertical direction with each rotation of
The punching die 111 fixed to the holder 9 and the lower die 113 fixed thereto warp off the burr 93 produced by the press working by the press working mechanism 51 and cut the front and rear male connector terminals 127 from each other.

In the preferred embodiment shown, the press working mechanism 53 performs warping and cutting of the burr 93 at the same time, but they may be performed separately to improve the finished work.

The press working mechanism 55 is additionally installed, and the wire rod 3 is formed into separate male connector terminals 127 one by one by the press working mechanism 53.
This is a molding press that bends the material into a U-shape.

The press working mechanism 55 includes a cam 131 fixed to a rotating shaft 129 drivingly connected to a rotational drive source (not shown), a pair of parallel guides 133 fixed vertically to the device main body 5, and a pair of parallel guides 133 fixed to the device main body 5 in the vertical direction. A block 135 is guided by a parallel guide 133 and is mounted so as to be able to reciprocate in the vertical direction, and a block 1
A cam follower 137 is rotatably attached to the block 135 so as to be in constant contact with the cam 131, a suspender 141 is detachably fixed to a hole 139 provided at the bottom of the block 135, and the suspender 1
41, and a lower mold 147, which is movably fixed to the device body 5 along the direction of movement of the wire 3. has been done.

Of the pair of parallel guides 133 fixed to the device main body 5 in the longitudinal direction, the left guide 133 is shared with the guide 99 in the illustrated embodiment.

The lower mold 147 has a rectangular parallelepiped main body 149 and bolt holes 14 extending on both sides of the lower part of the rectangular parallelepiped main body 149.
4 and a flange 151.
A wire rod 3 is placed in the device main body 5 below the lower mold 147.
A long hole 153 is provided that extends in the direction of movement.

The bending mold 145 can be moved and fixed to any position on the suspender 141 by bolts 146, while the lower mold 147 can be fixed by bolts 146.
5 and a nut 157, it can be moved to any desired position and fixed. Therefore, the interval between the press working mechanism 53 and the press working mechanism 55 along the traveling direction of the wire rod 3 can be changed in the same way as the interval along the traveling direction of the wire rod 3 between the press working mechanism 51 and the press working mechanism 53. can. Pressing mechanism 5
Between each mold on the lower side of 1, 53, 55, there is a wire 3
Alternatively, a support block 161 having a semicircular cross-sectional groove for supporting the wire 3 processed into the male connector terminal 127 is provided.

The male connector terminal 127 bent into a U-shape by the press working mechanism 55 is dropped from the press working mechanism 55, passes through a chute 159 attached to the lower part of the device main body 5, and is placed in an appropriate storage box. be accommodated.

In another embodiment shown in FIGS. 7 to 11, the wire 3 is a tin-plated male connector terminal of a solid brass wire having a square cross section of 2 mm or less on a side. It is made of wire rod.

Therefore, in the first embodiment of the male connector terminal manufacturing mold according to the present invention illustrated in FIGS. 8 to 9, the mold 84 is designed to manufacture male connector terminals having a square cross section. Groove 85 with isosceles triangular cross section,
87, and semi-square pyramidal end portions 89, 91 having the same shape as the end shape of the final product male connector terminal 20 provided between the grooves 85, 87.

Furthermore, in the mold for manufacturing male connector terminals according to the second embodiment of the present invention illustrated in FIGS. 117, and the groove on the upper surface of the lower mold 113 is a groove 122 having the same cross section as a right isosceles triangle obtained by cutting the cross section of the wire rod 2 diagonally.

The structure of the present invention can be modified in various ways to accommodate materials such as wide strips in addition to the illustrated circular and square cross-section wires.

[Effects] The present invention uses the molds for manufacturing male connector terminals of the first and second aspects to continuously supply wire rods, which serve as raw materials for male connector terminals that are continuous in the longitudinal direction, at regular intervals. Since burrs are formed by pressing and the burrs are removed later, male connector terminals having smooth ends can be manufactured in large quantities and at high speed.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of a continuous processing machine using molds for manufacturing male connector terminals according to the first and second aspects of the present invention. FIG. 2 is an exploded perspective view of an embodiment of a mold for manufacturing male connector terminals according to the first and second aspects of the present invention. FIG. 3 is a plan view of the mold for manufacturing male connector terminals according to the first aspect of the present invention shown in FIG. 2.
FIG. 4 is a side view of the mold for manufacturing male connector terminals shown in FIG. 3. FIG. 5 is a plan view of the mold for manufacturing male connector terminals according to the second embodiment of the present invention shown in FIG. 2. 6 is a side view of the mold for manufacturing male connector terminals shown in FIG. 5. FIG. FIG. 7 is an exploded perspective view of another embodiment of the mold for manufacturing male connector terminals according to the first and second aspects of the present invention. FIG. 8 is a plan view of the mold for manufacturing male connector terminals according to the first aspect of the present invention shown in FIG. 7. FIG. 9 is a side view of the mold for manufacturing male connector terminals shown in FIG. 8. FIG. 10 is a plan view of the mold for manufacturing male connector terminals according to the second embodiment of the present invention shown in FIG. 7. FIG. 11 is a side view of the mold for manufacturing male connector terminals shown in FIG. 10. FIGS. 12a to 12d are schematic diagrams for explaining a conventional method of manufacturing male connector terminals.
FIGS. 13a to 13e are perspective views of typical conventional male connector terminals. 3...Wire rod, 15...Material feeding mechanism, 51,5
3,55...press working mechanism, 93...burr, 1
27... Male connector terminal, 128, 155...
Boruto, 134,157...Natsuto, 121,1
51...flange, 130...bolt hole, 153
...Long hole.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) The wire material that is the raw material for male connector terminals that is continuous in the longitudinal direction is continuously supplied at regular intervals, and the end shape corresponds to the end shape of the male connector terminal. A mold for manufacturing a male connector terminal, which is crushed by a splittable mold in which a pair of female recesses aligned in the longitudinal direction is formed, and a portion of the wire that does not fit into the female recesses is formed as a burr. The female recess has a groove having the same cross-sectional shape as the wire, and an end portion formed at an inner end of the groove and having the same shape as the end shape of the final product male connector terminal. A mold for manufacturing male connector terminals, wherein the ends of the pair of female recesses are adjacent to each other in the longitudinal direction. (2) In the mold for manufacturing male connector terminals according to claim 1, the wire rod is a tin-plated male solid wire made of brass and having a circular cross section with a diameter of 2 mm or less. A wire rod for a type connector terminal, wherein the mold is composed of a pair of upper and lower divisible mold pieces having the same structure, and the female mold recess has a groove with a semicircular cross section having the same diameter as the wire rod; A mold for manufacturing a male connector terminal, characterized in that the mold has a semicircular end portion having the same shape as the end shape of the male connector terminal formed at the inner end of the groove. (3) In the mold for manufacturing male connector terminals according to claim 1 of the utility model registration claim, the wire material is a solid wire made of brass having a square cross section with a piece length of 2 mm or less and tin-plated. A wire rod for a male connector terminal, wherein the mold is composed of a pair of upper and lower divisible mold pieces having the same structure, and the female mold recess has a groove with a right isosceles triangular cross section; A mold for manufacturing a male connector terminal, characterized by having a semi-square pyramidal end portion having the same shape as the end shape of the final product male connector terminal formed at the inner end of the groove. . (4) A pair of wire rods, which are raw materials for male connector terminals that are continuously supplied in the longitudinal direction, are aligned at regular intervals in the longitudinal direction and have an end shape that corresponds to the end shape of the male connector terminal. A male connector terminal manufacturing mold for removing burrs formed by crushing with a splittable mold having a female recess formed therein, the mold includes a columnar body and a mold for warping the burrs fixed to the columnar body. a pair of reciprocally driven punching dies comprising a punching blade shaped to be able to be dropped; and a pair of punching dies arranged opposite to the punching dies and receiving the burred wire on its upper surface in the direction of movement of the wire. A pair of vertical guide holes for guiding the cutting die on both sides of the groove, and a horizontal guide hole for guiding the cutting blade of the cutting die inside the pair of vertical guide holes. A mold for manufacturing a male connector terminal, comprising: a lower mold having a hole; and a mold for manufacturing a male connector terminal. (5) In the mold for manufacturing male connector terminals according to claim 4 of the utility model registration claim, the wire material is a tin-plated male solid wire made of brass and having a circular cross section with a diameter of 2 mm or less. It is a wire rod for a type connector terminal, and the cutting die has a cutting blade having a cross section of a quarter circle back to back, and a groove formed on the upper surface of the lower die is arranged so that the wire rod and A mold for manufacturing a male connector terminal, characterized in that the groove has a semicircular cross section with the same diameter. (6) In the mold for manufacturing male connector terminals according to claim 4 of the utility model registration claim, the wire material is a solid wire made of brass having a square cross section with a piece length of 2 mm or less and tin-plated. A wire rod for a male connector terminal, wherein the cutting die has a cutting blade having an isosceles triangular cross section, and the groove formed on the upper surface of the lower die is formed in the wire rod. 1. A mold for manufacturing a male connector terminal, characterized in that the groove has the same cross section as a right isosceles triangle formed by dividing the cross section with diagonal lines.