JP2000126900A - Intermitting mechanism for short terminal punching punch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intermitting mechanism for short terminal punching punches provided on a progressive press die which can be corresponded to the high-speed operation of a high-speed press. SOLUTION: This mechanism is the intermitting mechanism 1 for short terminal punching punches which is provided on the progressive press die 4 consisting of the die set 41 of an upper die which is mounted to the ram 32 of the press 3 which is reciprocated along a 1st direction (a) and die set 42 of a lower die which is mounted to the bed 31 of the press 3. In the intermitting mechanism 1 for the short terminal punching punches 6 which is freely movably provided along the 1st direction (a) on the die set 41 of the upper die and the short terminal punching punch 6 for punching out by cooperating with the die set 42 of the lower die when it is situated on the nearest side of the die set 42 of the lower die is intermittently moved toward the die set 42 of the lower die and held, the motion of the die set 41 of the upper die which is reciprocated along the 1st direction (a) together with the ram 32 is mechanically transmitted to the short terminal punching punch 6 at a prescribed timming.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a progressive press die mounted on a press machine, in which terminals of a basic shape are continuously formed. By using a short terminal punch to reduce the size, it belongs to an intermittent mechanism for short terminal punch for forming short terminals.

[0002]

2. Description of the Related Art Conventionally, a plurality of types of progressive press dies mounted on a press machine are used to mold a plurality of terminals having different lengths into a state of being connected to a carrier in a predetermined arrangement relationship. There is a continuous processing method for terminals.

[0003] The press machine used in this continuous processing method for connector terminals is a high-speed press machine. As shown in FIG.
A frame (not shown) fixed to the bed 31;
The frame is provided to be reciprocally movable in a first direction a,
And a ram 32 driven by hydraulic pressure or the like.

On the other hand, as shown in FIG. 7, a (second) progressive press die 4 includes an upper die set 41 and a lower die set 42. The upper die set 41 is a press machine 3
Is mounted on the ram 32. Also, the lower die set 42
Is mounted on the bed 31 of the press machine 3.

[0005] In this method for continuously processing the odd-shaped connector terminals, first, a terminal material is continuously punched into a basic terminal shape by a first progressive press die mounted on a press machine. At this time, the guide hole of the carrier is also punched.

Next, as shown in FIG. 7, a short terminal punch 6 and an intermittent short terminal punch mechanism 9 for intermittently moving and holding the short terminal punch 6 toward the lower die set 42 are provided. A short terminal is formed by cutting a part of the terminal of the basic shape at a predetermined pitch by the second progressive press die 4 provided.

[0007] Finally, the second progressive press die 4 mounted on the press machine 3 is replaced with a third progressive press die (not shown) having a long terminal punch. The progressive press die of No. 3 cuts the tip of the terminal having the basic shape to form a long terminal.

In this prior art, the intermittent mechanism 9 for the short terminal punch includes a solenoid 91 and a control device 92 for controlling the solenoid. Therefore, the intermittent drive of the short terminal punch is controlled by an electric control. (For example, see Japanese Patent Application Laid-Open No. 5-114452).

[0009]

As described above, in the prior art, since the intermittent drive of the short terminal punch is performed by electrical control, high speed which is the greatest advantage of press working using a high speed press machine is achieved. Rotational speed (for example, 700SP
M) is not possible, and electrical control requires 3
00 SPM was the upper limit.

[0010] Therefore, an object of the present invention is to provide an intermittent mechanism for short terminal punch, which is provided in a progressive press die capable of coping with high-speed operation of a high-speed press machine.

[0011]

According to the first aspect of the present invention, an upper die set mounted on a ram reciprocating along a first direction provided on a press machine; An intermittent mechanism for punching a short terminal, provided in a progressive press die comprising a lower die set attached to a provided bed, wherein the first direction is within a predetermined range in the upper die set. The lower die set is intermittently provided with a short terminal punch for extracting a short terminal in cooperation with the lower die set when the die is positioned closest to the lower die set. In the intermittent mechanism for short terminal punch, which is moved toward and held by the upper terminal die set, which reciprocates with the ram in the first direction at a predetermined timing. Communicate to The Rukoto, short terminal extracting punch intermittent mechanism, characterized in that is adapted to hold to move the short-terminal extracting the punch towards the intermittently the lower mold die set is obtained.

According to the second aspect of the present invention, the apparatus includes a slide punch, a timing cam, and a rod, and the slide punch is movable along the first direction within a predetermined range. The lower die set or the lower die set is provided on the upper die set so as to return toward the lower die set, and further before the upper die set is positioned closest to the lower die set. By moving against the upper die set in the first direction by abutting a member fixed to the die set, the timing cam has a cam portion, The mold die set is provided so as to rotate only in one direction, and by directly or indirectly engaging with the slide punch reciprocating in the first direction, it is possible to rotate in the one direction. The cam portion is adapted to directly or indirectly engage the rod at a predetermined timing, and the upper die is movably movable along a second direction and returns to a predetermined position. Provided in the set, directly or indirectly engaged with the cam portion, thereby moving in the second direction to engage with the short terminal punch, and the short terminal punch is connected to the lower die set. 2. The intermittent mechanism for short terminal punch according to claim 1, wherein the intermittent mechanism is adapted to be moved and held toward the short terminal.

According to the third aspect of the invention, there is provided a lever having one end rotatably attached to the upper die set so as to be swingable in the second direction. The cam portion engages with a central portion of the lever to swing the lever at a predetermined timing along the second direction, and the rod is swung by the cam portion. The short terminal punch is moved toward the lower die set by engaging with the other end of the lever and moving along the second direction and engaging with the short terminal punch. The intermittent mechanism for short terminal punch according to claim 2, characterized in that the intermittent mechanism for punching short terminals is obtained.

[0014]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 shows a step of forming a short terminal using a progressive press die having an intermittent mechanism for short terminal punch according to a first embodiment of the present invention, wherein (a) shows an upper die set. Is a front view showing a state when the upper die set is at the top dead center, (b) is a front view showing a state when the upper die set is at the bottom dead center,
(C) is a front view showing a state in which the upper die set is moving from bottom dead center to top dead center, and (d) is a state in which the upper die set has moved from top dead center to bottom dead center again. FIG. 2 shows a main part of the intermittent mechanism for short terminal punch shown in FIG. 1, FIG. 2 (a) is an enlarged front view in the state of FIGS. 1 (a) and 1 (b), and FIG. ) Is an enlarged front view in the state of FIGS. 1C and 1D, and FIG. 3 is a schematic view showing a process of forming a short terminal and a long terminal using the progressive press die or the like shown in FIG. It is a perspective view shown in FIG.

Referring to FIGS. 1 to 3, an intermittent mechanism 1 for a short terminal punch according to the present embodiment is a second progressive press die (for a short terminal punch) mounted on a high-speed press machine 3. 4 is provided. The high-speed press machine 3 is configured to include a bed 31, a frame (not shown) fixed to the bed 31, and a ram 32 provided on the frame so as to be able to reciprocate in a first direction a. Ram 3
Numeral 2 reciprocates in a first direction a by hydraulic pressure. In the case of the present embodiment, the first direction a is
It is vertical. The progressive press die 4 includes an upper die set 41 and a lower die set 42. The upper die set 41 is mounted on the ram 32 of the press machine 3. The lower die set 42 is used for the bed 3 of the press machine 3.
1 is mounted on.

The short terminal punching intermittent mechanism 1 intermittently lowers the short terminal punch 6 provided on the upper die set 41 in a predetermined range along the first direction a. It is moved to the die set 42 and held here. With this intermittent mechanism 1 for punching short terminals,
When the short terminal punch 6 is located closest to the lower die set 42, that is, in the present embodiment, when the short terminal punch 6 is located at the lowest position, the short terminal punch 6 The blank 8-2 formed in the previous process in cooperation
Is cut off to form a short terminal 84. The short terminal punch 6 is urged to move away from the lower die set 42, that is, to always return to the top dead center.

The intermittent mechanism 1 for punching short terminals according to the present embodiment includes a slide punch 11, a timing cam 12,
It is configured to include a lever 13 and a rod 14.

The slide punch 11 is provided on the upper die set 41 so as to be movable along a first direction a within a predetermined range, and the slide punch 11 is provided at the lowermost die set 42 within a predetermined range. First to return to the closer position
Of the spring 15. In addition, the slide punch 11 moves the lower die before the upper die set 41 is positioned closest to the lower die set 42, that is, before the upper die set 41 is positioned at the bottom dead center. The lower end block 43 fixed to one end of the set 42 comes into abutment. Therefore, the upper die set 41
Is moved from the top dead center to the bottom dead center together with the ram 32, when the upper die set 41 approaches the bottom dead center, the slide punch 1
1 stops at the lower die block 43, but the upper die set 41 moves further downward and then stops at the bottom dead center (see FIGS. 1A and 1B). At this time, the slide punch 11 moves upward relative to the upper die set 41. On the other hand, when the upper die set 41 moves from the bottom dead center to the top dead center together with the ram 32, the slide punch 11 is urged downward by the first coil 15. The upper die set 41 is moved upward by the ram 32 while being stopped while maintaining a state of contact with the upper die. Therefore, at this time, the slide punch 11 moves downward relative to the upper die set 41. in this way,
When the slide punch 11 moves downward relative to the upper die set 41 by a predetermined slide amount c, the slide punch 11 engages with the upper die set 41 and thereafter moves together with the upper die set 41. Move upward. As described above, the slide punch 11 is configured to reciprocate in the first direction a by a predetermined slide amount c by the vertical movement of the upper die set 41.

In the slide punch 11, the second direction b
A rotating claw 16 is provided so as to be able to move back and forth along. The rotating pawl 16 is urged by a second spring 17 so as to protrude from the slide punch 11.
In the present embodiment, the second direction b is parallel to the feed direction of the material 8. The rotation claw 16 has a pin 122 of a timing cam 12 described later due to its tip shape.
When it hits from below, it is drawn into the slide punch 11 and does not press the pin 122. However, when it hits the pin 122 from above, it is not drawn into the slide punch 11 and this pin 122 is pulled. It is configured to press downward. Therefore, when the slide punch 11 moves up and down, only the downward movement of the slide punch 11 is transmitted to the timing cam 12 through the rotating claw 16, and as a result, the timing cam 12 rotates counterclockwise in FIG.

The timing cam 12 has a convex cam portion 12.
The cam body 121 includes a disk-shaped cam body 121 having pins 1a, and pins 122 provided at equal intervals on the outer peripheral edge of the cam body 121. The timing cam 12 is rotatably attached to the upper die set 41 by a shaft 123 extending in a direction orthogonal to the first and second directions a and b, respectively. Above the timing cam 12, a reverse rotation preventing claw 18 is arranged. The reverse rotation preventing claw 18 is attached to the upper die set 41 so as to be movable in the first direction a, and is moved downward by the third spring 1.
9 is energized. This reverse rotation preventing claw 18
1 retreats from the pin 122 coming from the right side of the reverse rotation preventing claw 18 in FIG. 1 and does not retreat from the pin 122 coming from the left side of the reverse rotation preventing claw 18 in FIG. Lock. Therefore, the reverse rotation preventing claw 1
8, the timing cam 12 in FIG. 1 is allowed to rotate only to the left and not to rotate to the right.

The lower end of the lever 13 is rotatably attached to the upper die set 41 so as to be swingable along the first direction a. A pin 131 is attached to the center of the lever 13. This pin 131
Engages with the cam portion 121a of the timing cam 12, and is pressed rightward in FIG. 1 by the cam portion 121a. When the cam 121a and the pin 131 engage in this manner, the lever 13 tilts rightward in FIG. Behind the timing cam 12, a slide rod 21 is provided on the upper die set 41 so as to be movable in the second direction b. The slide rod 21 is always moved toward the slide punch 11 by a fourth spring 22.
Powered by One end of the slide rod 11 is connected to the lever 13. Therefore, the lever 13 is always inclined toward the timing cam 12. That is, the pin 131 of the lever 13 is always in contact with the outer peripheral surface of the timing cam 12.

The rod 14 is provided on the upper die set 41 so as to be movable in the second direction b. One end of the rod 14 is connected to the upper end of the lever 13. Therefore, the rod 14 always returns to the timing cam 12 and is located at a predetermined position. A cam portion 141 is formed at the other end of the rod 14. The cam portion 141 engages with a cam portion 61 formed at the upper end of the short terminal punch 6, and the short terminal punch 6 is moved in the first direction by the engagement of the cam portions 141 and 61. Reciprocate along a.

Next, the operation of this embodiment will be described with reference to FIG. First, in the state of FIG. 1A, the upper die set 41 is located at the top dead center together with the ram 32, and the slide punch 11 is biased by the first spring 15 and is located at the bottom dead center. . The cam portion 121a of the timing cam 12 is located immediately below the pin 131 of the lever 13, but is not engaged with the pin 131. For this reason,
The lever 13 is pulled by the slide rod 21 toward the timing cam 12. Therefore, lever 1
The rod 14 connected to 3 is also drawn toward the timing cam 12, and is located at a predetermined position. In this state, the cam portion 141 of the rod 14 is
Therefore, the short terminal punch 6 is located at the position farthest from the lower die set 42, that is, at the top dead center.

When the state shown in FIG. 1A is changed to the state shown in FIG. 1B, the slide punch 11 abuts on the lower die block 43, and then the upper die set 41 moves to the bottom dead center. 11 moves upward relative to the upper die set 41 by a predetermined slide amount c. When the slide punch 11 relatively slides in this manner, the rotating pawl 16
However, since the timing cam 12 is prevented from rotating in the reverse direction (rightward rotation) by the reverse rotation preventing claw 18, the pin 122 is not pushed up by the rotation claw 16, and the pin 122 is moved upward. Overall, it descends to the bottom dead center together with the upper die set 41. At this time, the rotating pawl 16
Is once pulled into the slide punch 11 to disengage with the pin 122 that was initially in contact, and then protruded from the slide punch 11 again to make the pin 122 that was initially in contact.
Abuts on the pin 122 one above.

Next, when changing from the state shown in FIG. 1B to the state shown in FIG. 1C, the slide punch 11
It moves downward by the urging force of. At this time, the rotating pawl 16
Presses the pin 122 of the timing cam 12 downward,
As a result, the timing cam 12 slightly rotates counterclockwise by one pin 122. Due to the rotation of the timing cam 12, the cam portion 121a of the timing cam 12 presses the pin 131 of the lever 13, and as a result, the lever 13
It is tilted toward the short terminal punch 6 and the rod 1
4 moves to the short terminal punch 6. As a result,
The cam portion 141 of the rod 14 engages with the cam portion 61 of the short terminal punch 6 and presses the cam portion 61 downward.
The short terminal punch 6 is lowered to the bottom dead center and is locked by the cam portion 141 of the rod 14 at the position of the bottom dead center.

Next, when changing from the state shown in FIG. 1C to the state shown in FIG. 1D, since the short terminal punch 6 is locked at the bottom dead center, it cooperates with the lower die set 42. Then, a part of one basic terminal 82 of the basic blank 8-2 is cut. Thus, the dimensions of the basic terminal 82 are reduced, and the short terminal 84 is formed. Also, at this time, the slide punch 11 moves relatively upward with respect to the upper die set 41, and accordingly, the rotating claw 16 is
It comes into contact with the pin 122 one level higher than that. When the ram 32 returns to the top dead center from the state of FIG.
The pin 122 is pressed downward, whereby the timing cam 12 is slightly rotated counterclockwise by one pin 122. As a result, the cam portion 121a of the timing cam 12
The third pin 131 is displaced upward, and the engagement between the cam portion 121a and the pin 131 is released. As a result, the lever 13 is moved by the slide rod 21 to the timing cam 1.
2, the rod 14 returns to a predetermined position, and the engagement between the cam portion 141 of the rod 14 and the cam portion 61 of the short terminal punch 6 is released.
Returns to top dead center due to its biasing force.

Thereafter, together with the ram 32, the upper die set 41
However, each time it moves up and down, the slide cam 11 rotates the timing cam 12 counterclockwise by the pitch of the pins 122. Therefore, when the upper die set 41 moves up and down by an amount equal to the number of the pins 122, the cam portion 121a of the timing cam 12 makes one revolution and returns to the position shown in FIG.
During this time, the short terminal 84 is not formed. That is, the number obtained by subtracting 1 from the number of pins 122 of the timing cam 12 is the number of basic terminals 82 between adjacent short terminals 84. Of course, the basic terminal 82 becomes a long terminal 85 or a short terminal having a different length in a later step.

Next, a process of forming short terminals and long terminals from a material using a progressive press die 4 or the like having the intermittent mechanism 1 for punching short terminals will be described with reference to FIG. .

First, as shown in the conceptual diagram of FIG. 3, a raw material 8-1 as a strip-shaped metal plate is attached to a first progressive press die (not shown) mounted on a high-speed press machine. The outline punch 5 is used to punch one by one continuously to obtain a substantially comb-shaped basic blank 8-2. At this time, a guide hole 81 is also formed. This basic blank 8-2 is
The basic terminal 82 having the basic shape of the terminal is
It is in a state of being connected by.

Next, in place of the first progressive press die, a second progressive press die 4 provided with the intermittent short punching mechanism 1 shown in FIG. . Then, the basic blank 8-2 obtained in the previous step is sent to the high-speed press machine 3, and as described in the operation, a part of the basic terminal 82 is cut off intermittently by the short terminal punch 6, and the predetermined The short terminals 84 are formed at the pitch d.

Next, instead of the second progressive press die 4,
A third progressive press die (not shown) is mounted on a high speed press machine. A long terminal punch 7 is mounted on the upper die set of the third progressive press die. The tip of the basic terminal 82 is continuously cut by the long terminal punch 7 to form the long terminal 85. At this time, the long terminal punch also strokes at the short terminal 84,
Of course, the short terminal 84 is not cut by the long terminal punch.

As described above, a terminal group in which the plurality of short terminals 84 and long terminals 85 are connected by the carrier 83 is obtained.

FIG. 4 is a front view of a main part of an intermittent mechanism for punching short terminals according to a second embodiment of the present invention. This embodiment has the same configuration as the first embodiment except for the timing cam 12, and therefore only the timing cam 12 will be described.

In the case of this embodiment, the timing cam 12 is formed with two convex cam portions 121a and 121b. Therefore, in the present embodiment, the timing cam 12
During one rotation, two short terminals are formed.

FIG. 5 is a front view of a main part of an intermittent mechanism for punching short terminals according to a third embodiment of the present invention. In the first and second embodiments, the cam portion of the timing cam 12 is convex, but in the present embodiment, the two cam portions 121c and 121d provided on the timing cam 12 are provided.
Is concave. Therefore, in the case of the present embodiment, the cam portion 1
When the pins of the lever 21c and 121d are engaged with each other, the lever is tilted toward the timing cam, and the rod is drawn toward the timing cam 12. Therefore, in the case of the present embodiment, when the rod is pulled, the cam portion of the rod and the cam portion of the short terminal punch are engaged, and the short terminal punch is lowered to the bottom dead center.

By using the short terminal punch intermittent mechanism of the present invention, as shown in FIG. 6A, a long terminal 85 can be arranged between a number of short terminals 84.
As shown in FIG. 6B, a plurality of types of terminals 84, 85, 86 having different lengths can be formed.

The embodiments described above are only a part of the present invention, and various configurations are conceivable. For example, in the first embodiment, the slide punch 11 is brought into contact with the lower die block 43, but the slide punch 11 may be brought into direct contact with the lower die set. Further, the lever 13 may be omitted, and the timing cam 12 and the rod 14 may be directly engaged. In the first to third embodiments, only one type of short terminal is formed. For example, a plurality of timing cams are provided coaxially with the upper die set, and a lever, a rod, and a short terminal that are linked to each timing cam are provided. By providing a punch, a plurality of types of short terminals can be formed at an arbitrary pitch.

As described above, various configurations of the present invention can be considered, but the gist of the present invention is that the reciprocating motion of the upper die set is mechanically transmitted to the short terminal punch at a predetermined timing. is there.

[0040]

According to the intermittent mechanism for cutting short terminals of the present invention, the reciprocating motion of the upper die set is mechanically transmitted to the short terminal punch at a predetermined timing. The short terminal punch can be intermittently driven in synchronization.

[Brief description of the drawings]

FIG. 1 shows a step of forming a short terminal using a progressive press die provided with an intermittent mechanism for punching a short terminal according to a first embodiment of the present invention. Front view showing the state at the dead center, (b) is a front view showing the state when the upper die set is at the bottom dead center, and (c) is the upper die set from the bottom dead center to the top dead center. (D) is a front view showing a state where the upper die set has been moved from the top dead center to the bottom dead center again.

FIGS. 2A and 2B show a main part of the intermittent mechanism for punching short terminals shown in FIG. 1, wherein FIG. 2A is an enlarged front view in the state of FIGS. 1A and 1B, and FIG. It is an enlarged front view at the time of c) and (d).

FIG. 3 is a perspective view schematically showing a process of forming a short terminal and a long terminal using a progressive press die or the like shown in FIG. 1;

FIG. 4 is a front view of a main part of a short terminal punch intermittent mechanism according to a second embodiment of the present invention.

FIG. 5 is a front view of a main portion of an intermittent mechanism for short terminal punch according to a third embodiment of the present invention.

FIGS. 6A and 6B are plan views of a terminal group obtained by the present invention.

FIG. 7 is a front view of a progressive press die provided with a conventional intermittent mechanism for short terminal punch.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intermittent mechanism for short terminal punch 3 High-speed press machine 4 Progressive press die 5 External punch 6 Short terminal punch 7 Long terminal punch 8-1 Material 8-2 Basic blank 11 Slide punch 12 Timing cam 13 Lever 14 Rod 15 First spring 16 Rotation claw 17 Second spring 18 Reverse rotation prevention claw 19 Third spring 21 Slide 22 Fourth spring 31 Bed 32 Ram 41 Upper die set 42 Lower die set 43 Lower die Block 61 Cam part 81 Guide hole 82 Basic terminal 83 Carrier 84 Short terminal 85 Long terminal 121 Cam body 121a Cam part 122 pin 123 Shaft 131 pin 141 Cam part

Claims (3)

[Claims] 1. An upper die set mounted on a ram reciprocating along a first direction provided on a press machine,
An intermittent mechanism for punching a short terminal punch provided in a progressive press die comprising a lower die set attached to a bed provided in the press machine, wherein the upper die set is within a predetermined range. A short terminal punch, which is provided movably along a first direction and cooperates with the lower die set to pull out a short terminal when positioned closest to the lower die set; In the intermittent mechanism for short terminal punch, which moves and holds toward the lower die set, the movement of the upper die set reciprocating in the first direction together with the ram is mechanically performed at a predetermined timing. An intermittent mechanism for a short terminal punch, wherein the short terminal punch is intermittently moved toward the lower die set and held by transmitting the short terminal punch to the short terminal punch. 2. A slide punch, a timing cam,
The slide punch is provided in the upper die set so as to be movable along the first direction within a predetermined range and to return to the lower die set. Further, the upper die set is abutted against a member fixed to the lower die set or the lower die set before the upper die set is positioned closest to the lower die set. The timing cam has a cam portion, and is provided on the upper die set so as to rotate only in one direction, and the first cam is provided in the first die set.
Is directly or indirectly engaged with the slide punch reciprocating in the direction described above, whereby the cam portion rotates in the one direction and the cam portion directly or indirectly engages with the rod at a predetermined timing. The rod is provided on the upper die set so as to be movable along a second direction and return to a predetermined position, and is directly or indirectly engaged with the cam portion to thereby form the rod. 2 to engage with the short terminal punch,
2. The apparatus according to claim 1, wherein the short terminal punch is moved toward and held by the lower die set.
The intermittent mechanism for the short terminal punch described. 3. A lever having one end rotatably attached to the upper die set so as to be swingable along the second direction, wherein the cam portion is provided at a center of the lever. And the lever is pivoted at a predetermined timing along the second direction. The rod is connected to the other end of the lever pivoted by the cam portion. By engaging and moving along the second direction and engaging with the short terminal punch, the short terminal punch is moved and held toward the lower die set. 3. The intermittent mechanism for a short terminal punch according to claim 2, wherein: