JP5913525B1 - Contact molding equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a contact molding apparatus capable of performing precise bending molding so that the tips of the contacts are arranged in an orderly manner without causing scratches on the side surfaces of the contacts. A bending die 3 that supports a bending direction side surface of a bending position of a contact 1 implanted in a housing 2 and a side surface of the contact 1 implanted in the housing 2 are added in the bending direction from the opposite side of the bending direction. A bending mechanism having a bending punch 4 to be pressed, and a contact point between the contact 1 to be formed and the pressure unit 4a in accordance with the bending operation of the bending punch 4 is equal to the pressure unit 4a of the bending punch 4; A contact molding apparatus provided with a pressing surface 4b that generates rolling that moves by an amount. [Selection] Figure 1

Description

  The present invention relates to a contact molding apparatus for accurately bending a contact implanted in a connector housing.

Some connectors have a large number of contacts implanted in order to connect a large number of electrical conductors by a combination of male and female.
In order to accurately insert a large number of contacts into the place to be connected, the tip of each contact is neatly aligned in advance toward the place to be inserted, and precise control is performed on the direction and depth of insertion. It is necessary to be done.

In particular, in a so-called right angle type connector mounted on a printed circuit board, the ends of the multiple contacts must be aligned when bending of the implanted contacts is completed.
Therefore, in order to ensure the quality of such a connector, it is necessary to precisely control the bending direction and the bending angle in addition to the specifications for implanting the contact (for example, see Patent Document 1 below). .

  Some of the contact parts connected to the same connecting member are uniformly bent before the planting process is performed, and the contact part subjected to the bending process protrudes when the planting process is completed. Products manufactured in this way are also introduced (for example, see Patent Document 2 below).

Japanese Patent No. 2734640 Japanese Patent Publication No. 4-19679

  However, in the conventional bending method, no matter which method is adopted, the side surface of the contact is scratched at the time of molding before and after the contact is press-fitted into the connector housing, or when the contact is press-fitted into the connector housing after molding. There was a problem of generating.

  The present invention has been made in view of the above circumstances, and provides a contact molding apparatus capable of performing precise bending molding so that the tips of the contacts are aligned in an orderly manner without causing scratches on the side surfaces of the contacts. Objective.

In order to solve the above-mentioned problems, a contact molding apparatus according to the present invention comprises a bending die for supporting a bending direction side surface of a bending position of a contact implanted in a housing, and a bending direction of a side surface of the contact implanted in the housing. A bending mechanism having a bending punch that pressurizes in the bending direction from the opposite side of the bending die, the bending die supporting portion having a bending contact surface having a diameter smaller than the inner diameter of the bending portion of the contact, Further, it is characterized in that a pressing surface is provided that causes rolling in which the contact between the contact to be formed and the pressing portion moves by an equal amount in accordance with the bending operation of the bending punch.
By making the pressure surface circumferential, it is possible to cause the pressure surface to roll at an angle equal to the bending angle of the contact with the bending operation of the bending punch.

  A bending die having a bending die for supporting a bending direction side surface of a bending position of a contact implanted in a housing, and a bending punch for pressing the side surface of the contact implanted in the housing from the opposite side to the bending direction. The bending punch includes a circumferential pressure surface at a pressure portion thereof, and the bending punch is subjected to a bending operation of the bending punch, the contact to be molded and the pressure applied to the pressure surface of the bending punch. A contact molding device that takes a track that causes rolling in which the contacts with the part move by equal amounts may be used.

  Furthermore, an operation frame that swings (may be rotatable) about the bending position of the contact implanted in the housing is provided, and the operation frame sandwiches the bending die and the bending punch between the center of the swing. It is good also as a structure provided by opposing arrangement | positioning.

According to the contact molding apparatus of the present invention, the pressurizing portion of the bending punch is subjected to a rolling operation in which the contact between the contact to be molded and the pressurizing portion moves by an equal amount in accordance with the bending operation of the bending punch. A structure having a pressure surface, or a structure that takes a trajectory that causes rolling in which the contact between the molding object and the pressure part moves by an equal amount on the pressure surface of the bending punch in accordance with the bending operation of the bending punch. As a result, even in a quick bending operation, the contact can be bent with high accuracy without damaging the side surface of the contact.
In addition, since there is no need to add special processing or members to the pressurizing portion, it is advantageous in terms of maintenance and cost.

  Furthermore, an operation frame that swings around the bending position of the contact implanted in the housing is provided, and the operation frame has a configuration in which the bending die and the bending punch are arranged opposite to each other across the center of the swing. Thus, the contact can be molded while adjusting the direction of the bending punch and the bending die with respect to a contact in which the planting state is not uniform, such as a contact displaced at the time of planting. As a result, in the molding process, the position of the contact tip can be corrected to the position / direction that should be present one by one.

It is the longitudinal cross-sectional view seen from the side which shows an example of the bending operation | movement by the contact molding apparatus by this invention, and the principal part enlarged view. It is (A) top view and (B) the principal part enlarged view which shows an example of the bending operation | movement by the contact molding apparatus by this invention. It is the principal part longitudinal cross-sectional view (before shaping | molding) seen from the side which shows an example of the contact shaping | molding apparatus by this invention. It is the principal part longitudinal cross-sectional view (after shaping | molding) seen from the side which shows an example of the contact shaping | molding apparatus by this invention. It is the principal part longitudinal cross-sectional view seen from the front which shows an example of the contact molding apparatus by this invention. It is a cross-sectional view which shows an example of the contact molding apparatus by this invention. It is a block diagram which shows an example of the control method of the contact molding apparatus by this invention. It is a flowchart which shows an example of the shaping | molding process by the contact shaping | molding apparatus by this invention. It is a block diagram which shows an example of the control method of the contact molding apparatus by this invention.

Embodiments of a contact molding apparatus according to the present invention will be described below in detail with reference to the drawings.
The contact molding device according to the present invention is a device that performs a precise bending molding of a plurality of contacts 1 implanted in a housing 2 so that the tips of the contacts 1 are aligned in an orderly manner.

The contact molding apparatus according to the present invention includes a bending die 3 that supports the bending position of the contact 1 implanted in the housing 2 and its vicinity (support position), and a bending punch 4 that applies bending stress to the contact 1 implanted in the housing 2. (See FIG. 1).
The bending mechanism includes an operation frame 5 that swings in a direction perpendicular to the bending direction with the bending position of the contact 1 implanted in the housing 2 as the center, and the operation frame 5 is on the diameter of the swivel region. The bending die 3 and the bending punch 4 are provided so as to face each other with the center of oscillation of the operation frame 5 interposed therebetween (see FIG. 2).

The bending die 3 includes a support portion 3 a that supports the bending position of the contact 1.
The support portion 3a includes a support edge that comes into contact with the bending position of the contact 1 implanted in the housing 2, has a rake angle θ1 at the upper level, and a clearance angle θ2 at the rear.
The supporting edge is uniformly provided with a curved contact surface 3b along the bent portion of the contact 1 and having a diameter smaller than the inner diameter R over the entire width thereof.

The bending punch 4 includes a pressing portion 4 a that applies bending stress to the contact 1.
The pressurizing unit 4 a includes a curved pressurizing surface 4 b that rolls on the side surface of the contact 1 to be molded in accordance with the bending operation of the bending punch 4.
The pressurizing surface 4b rolls with substantially no slip so that the contact points P of the mutual contact P move in equal amounts along the side surface of the contact 1 to be molded as the bending punch 4 is bent.

For example, by making the pressure surface 4b circumferential (circular arc shape), the ratio of the moving amount of the contact point P to the entire circumference of the virtual perfect circle including the pressure surface 4b as an arc is This corresponds to the ratio of the bending angle by the bending punch 4 to 360 degrees.
As a result, the tangent line at the contact point (start point) P before the bending operation and the tangent line at the contact point (end point) P after the bending operation intersect at an angle equal to the bending angle of the contact 1 (see FIG. 1). .

The operation frame 5 supports the bending die 3 and the bending punch 4 constituting the bending mechanism by arranging and supporting the support portions 3a and the pressure portions 4a so as to always face each other during the bending operation. .
The bending die 3 and the bending punch 4 supported by the operation frame 5 move along the bending trajectory of the contact 1 without swinging in the other directions, and the bending surface 3b of the support portion 3a. The pressing surface 4b of the pressing unit 4a always moves so as to face each other in parallel.

  According to the bending mechanism using the bending die 3 and the bending punch 4, even if the contact P between the contact 1 and the bending punch 4 moves with the bending operation, the contact 1 and the bending punch 4 Thus, the contact 1 can be prevented from being damaged during the bending process.

Examples of contact forming apparatuses according to the present invention will be described below.
The contact molding apparatus shown in FIGS. 3 to 6 includes a contact molding means A for bending the contact 1 implanted in the housing 2, a holder B for holding the housing 2 during a bending operation on the contact 1, and the holder B Positioning means (not shown in the figure) that moves to a position where bending is performed, and supply / discharge means (for example, a transfer chuck) A so-called robot arm).

The contact forming means A includes the bending mechanism.
The bending mechanism includes a bending die 3 that supports a side in a bending direction of a bending position of a contact 1 implanted in the housing 2 and a distal end side of the bending position of the contact 1 implanted in the housing 2 opposite to the bending direction. The bending punch 4 that pressurizes in the bending direction from the side is provided.

In this example, the bending mechanism includes the bending die 3, the bending punch 4, the bending frame 3, the operation frame 5 that supports the bending punch 4, and the molding base that supports the operation frame 5 in a swingable manner. Is provided.
The operation of the bending mechanism and the swing of the operation frame 5 are adjusted by the control means 14 of the contact molding apparatus.

  The molding base includes, for example, the operation frame 5 in which the contact 1 in which the holder B is ideally implanted in the housing 2 to be molded is arranged in a horizontal direction, and the bending direction of the contact 1 (for example, the vertical direction). Further, the swing shaft 6 that swings in a direction perpendicular to the longitudinal direction of the contact 1 (for example, the horizontal direction) is supported in a vertical state.

The operation frame 5 stands along the rocking shaft 6, and the bending die 3 and the bending punch 4 constituting the bending mechanism are placed on a plane including the rocking shaft 6. It is arranged and supported in a positional relationship across 6.
With the above configuration, the operation frame 5 and the bending die 3 and the bending punch 4 supported by the operation frame 5 are centered on the bending position in the vicinity of the contact point between the supporting edge of the bending die 3 and the contact 1 to be molded. It swings along the slope of the moving shaft 6.

In order to cause the operation frame 5 to swing as described above, for example, the operation frame 5 has a support portion of the swing shaft 6 as a fulcrum and swings forward and backward with the fulcrum itself as a frame drive shaft. Alternatively, a configuration may be adopted in which a crank mechanism that advances and retreats with another frame drive shaft is connected to a moving point that swings around the fulcrum to swing.
The above configuration functions as a driving unit that swings the moving point to the left and right with respect to the fulcrum of the operation frame 5 together with an actuator that rotates the frame driving shaft.

The bending die 3 is fixed to, for example, a support rod 7 that moves forward and backward toward the side surface of the contact 1 that is a molding target.
The trajectory of the support rod 7 is set so as to draw a trajectory in which the bending die 3 can be supported one by one without being interfered by other contacts 1 during the bending operation of each contact 1.

The support rod 7 supports, for example, an eccentric portion of the die drive shaft 8 supported by the operation frame 5 so that a constant posture is always maintained even when the die drive shaft 8 rotates.
For example, the support rod 7 shown in FIGS. 3 to 6 is supported by the die drive shaft 8 so as to be always directed vertically downward.

The support rod 7 includes, for example, a guide hole having a constant width extending in the front and rear at the upper portion thereof, and the guide hole is provided with a columnar support shaft provided at an eccentric portion of the die drive shaft 8 on a stable track without substantial play. Load so that it advances and retreats linearly.
In this example, an elevating guide 11 extending in the vertical direction is fixed to the operation frame 5, the support rod 7 is supported by the elevating guide 11 so as to be movable up and down, and supported by the support shaft by the rotation of the die drive shaft 8. The supported rod 7 adopts a linear motion mechanism that moves up and down while moving the support shaft back and forth in the upper part (see FIG. 5).

For example, the bending punch 4 is fixed to a forming rod 9 that faces the side surface of the contact 1 to be formed and moves forward and backward so as to apply bending stress to the contact 1.
The trajectory of the forming rod 9 is set so as to draw a trajectory that allows the bending punch 4 to bend one by one without receiving interference from other contacts 1 during the bending operation of each contact 1. To do.
At the same time, the bending punch 4 follows a trajectory that causes rolling in which the contact P between the contact 1 to be molded and the pressing portion 4a moves by an equal amount on the pressing surface 4b of the bending punch 4 in accordance with the bending operation. Set to take.

For example, like the support rod 7, the forming rod 9 always maintains a constant posture even when the punch drive shaft 10 rotates at an eccentric portion of the punch drive shaft 10 supported by the operation frame 5. To support.
In this example, as a configuration that enables such support, a vertically moving guide 12 is fixed to the operation frame 5, and a horizontally traveling guide 13 is supported by the vertically moving guide 12 so as to be movable up and down. A parallel motion mechanism is adopted in which the forming rod 9 is supported on the travel guide 13 so as to be horizontally movable, and the forming rod 9 supported at an eccentric portion by the rotation of the punch drive shaft 10 moves back and forth vertically. (See FIG. 6).

In this example, if the diameter of the contact 1 is d and an arc-shaped pressurizing surface 4b having a radius r is employed, a 90 degree bend is formed regardless of the forward / backward stroke of the forming rod 9. The amount of movement L of the contact P on the side surface of the contact 1 to be molded is πr / 2.
In order for the amount of movement L to uniformly increase with respect to the unit amount of the bending angle, the arc-shaped center trajectory is set to r + d / 2 before the bending position of the contact 1 on the extension line of the center of the contact 1. Is the circular orbit having the center O as the center, the starting point of the bending operation (the center position of the arc shape) is set to r + d / 2 below the center of the contact 1, and the end point of the bending operation is the center of the circular orbit just above the center O. The position is the same distance as the radius (see FIG. 1).

The control means 14, for example, photographs all the contacts 1 in which the contacts 1 are implanted in the housing 2 to be molded from the front (the original orientation of the implanted contacts 1) before molding them. An imaging unit 15 is provided (image control).
Further, the control means 14 corrects the correction angle of the operation frame 5 and the correction angle of the die drive shaft 8 so that the area of the front image of all the contacts 1 obtained by the imaging means 15 is minimized immediately before the deformation. Is provided with a calculation means 16 for guiding.

At the same time, the calculation means 16 uses the correction angle to implant the bending angle suitable for aligning the formed tips of all contacts 1 and the housing 2 with respect to the origin of the positioning means of all contacts 1. The provided relative planting position coordinates and the like are derived, and the support position by the bending die 3 is derived from the relative planting position coordinates and the like.
The control unit 14 includes a recording unit 17 that holds the information guided by the calculation unit 16 as a data table.

  Further, the control means 14 cancels the correction angle of the operation frame 5 and the die drive shaft 8 guided by the calculation means 16 (minimizes the area of the front image immediately before deformation) bending direction (or support direction). ) And control data for realizing the support position by the bending die 3 and control data for realizing the appropriate bending angle are transferred to the operation frame 5, the bending die 3, the bending punch 4 and the driving means of the positioning means. Output.

The control means 14 controls the drive means of the operation frame 5 with control data that realizes the bending direction (or support direction), and sets the direction of the operation frame 5 with respect to the forming base for the contact 1 to be formed. Realized for each book.
The control means 14 controls the position of the support edge by controlling the swing angle of the die drive shaft 8 that supports the bending die 3 with the control data for realizing the support position, and the bending angle is determined. The bending angle of the contact 1 is realized by controlling the swing angle of the punch drive shaft 10 that supports the bending punch 4 with the control data to be realized (see FIG. 3 or FIG. 4).

The positioning means includes a holder B that holds the housing 2 so that the bending position of each contact 1 implanted in the housing 2 is accurately arranged at a bending point in accordance with the bending order. The holder B is moved while maintaining the orientation.
The positioning means includes, for example, driving means controlled by the control means 14 on each of the three axes so that the holder B moves in three axis directions orthogonal to each other according to the control data.
The drive means may appropriately employ an existing technology including a drive mechanism using a belt, a wire, a gear, or the like, and an actuator such as a servo motor.
When the driving means is selected, it is required to employ a device that can ensure a stable trajectory so that rattling and blurring do not occur during traveling and stationary (planting).

One of the three axes is set to be parallel to an ideal planting direction of the contact 1 planted in the housing 2. The other two axes are desirably arranged so as to be parallel to the arrangement of the contacts 1 (or holes in which the contacts 1 are implanted) in the housing 2.
In the case where a plurality of linearly arranged contact rows are arranged vertically, each contact 1 is formed, for example, sequentially from the upper stage to the lower stage or from the lower stage to the upper stage from the molding start contact to the molding end tact.

  At this time, when the contact 1 to be arranged at the bending forming point is determined, the control means 14 determines the bending position in the contact 1 from the planting position coordinates of each contact 1 and the control data for realizing the support position. Control data for determining and placing the bending position at the bending point is output to the driving means for each axis.

  The method of outputting the control data to the operation frame 5, the bending die 3, the bending punch 4 and the driving means of the positioning means is not limited to the above image control, but includes specifications of various connectors previously stored in a database. It can also be performed based on characteristics (standard control).

  When adopting the standard control, the control means 14 for each registered housing 2 is the bending angle and bending direction of all contacts 1 based on the tendency of the average planted state of each contact 1 (bending specifications). A data table in which the support positions and support directions (support specifications) of all contacts 1 and the planting position coordinates (housing specifications) of all contacts 1 are appropriately recorded is retained for each connector housing and each contact. It is good also as a structure provided with the index systematized so that reference is possible.

For example, the control means 14 refers to the bending specifications and the support specifications and the housing specifications from the molding start contact to the molding end contact of the housing 2 whose contact 1 is to be molded, and the operation frame 5, the bending die 3. Control data for realizing the bending specifications and support specifications and control data following the housing specifications are output to the bending punch 4 and the driving means of the positioning means.
Each actuator such as a servo motor plays a predetermined role while repeating normal rotation or reverse rotation according to the control data.

A contact forming means, B holder, R inner diameter,
θ1 rake angle, θ2 clearance angle,
1 contact, 2 housing,
3 bending die, 3a support part, 3b curved contact surface,
4 bending punch, 4a pressure part, 4b pressure surface,
5 Operation frame, 6 Oscillating shaft,
7 Support rod, 8 Die drive shaft,
9 molding rod, 10 punch drive shaft,
11 Lifting guide, 12 Lifting guide, 13 Traveling guide,
14 control means, 15 imaging means, 16 calculation means, 17 recording means,

Claims (2)

A bending die that supports the bending side surface of the bending position of the contact implanted in the housing;
A bending mechanism including a bending punch that pressurizes the side surface of the contact implanted in the housing from the opposite side of the bending direction;
The pressure part of the bending punch is provided with a pressure surface that causes rolling in which the contact between the contact to be molded and the pressure part moves by an equal amount in accordance with the bending operation of the bending punch,
An operation frame that swings around the bending position of the contact implanted in the housing is provided.
The operation frame includes a contact molding apparatus provided with the bending die and the bending punch in an opposing arrangement with the center of the swinging therebetween . A bending die that supports the bending side surface of the bending position of the contact implanted in the housing;
A bending mechanism including a bending punch that pressurizes the side surface of the contact implanted in the housing from the opposite side of the bending direction;
An operation frame that swings around the bending position of the contact implanted in the housing is provided.
The operation frame includes the bending die and the bending punch in an opposing arrangement with the center of the swinging therebetween.
The bending punch is provided with a circumferential pressure surface in the pressure part,
The contact punching apparatus wherein the bending punch takes a trajectory that causes rolling in which the contact between the contact to be formed and the pressurizing portion moves by an equal amount on the pressurizing surface of the bending punch in accordance with the bending operation of the bending punch.

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