KR100846849B1 - Terminal forming apparatus and method - Google Patents

Abstract

A terminal forming apparatus and a terminal forming method are provided to form a terminal of a rectangular case type, and which includes an overlapping plate formed such that the overlapping plate is overlapped with a ceiling plate. A terminal forming apparatus comprises: a bottom mold holder(10) having a bottom mold retainer(14); a top mold holder(40) formed above the bottom mold holder, lifted relatively to the bottom mold holder, and equipped with a top mold retainer(44); a swaging die(20) and a swaging punch(50) respectively installed correspondingly to the bottom and top mold retainers to process portions to be joining parts in a flat shape; a plate bending die(22) and a plate bending punch(52) respectively installed correspondingly to the bottom and top mold retainers to bend portions to be a ceiling plate and an overlapping plate such that the portions to be the ceiling plate and the overlapping plate are inclined to portions to be upright walls; a base die(24) and a base punch(54) respectively installed correspondingly to the bottom and top mold retainers to bend the portions to be the upright walls to a predetermined angle relative to a base; a ceiling plate die(26) and a ceiling plate punch(56) respectively installed correspondingly to the bottom and top mold retainers to bend the portions to be the ceiling plate at a right angle relative to one sides of the portions to be the upright walls; an upright wall die(28) and an upright wall punch(58) respectively installed correspondingly to the bottom and top mold retainers to allow a bending cam(29) to bend the portions to be the upright walls at a right angle relative to the base; and an overlapping plate die(34) and an overlapping plate punch(60) respectively installed correspondingly to the bottom and top mold retainers to bend the portion to be the overlapping plate such that the portion to be the overlapping plate is overlapped with the ceiling plate.

Description

Terminal forming apparatus and method

1 is a plan view showing the configuration of a strap that a plurality of terminals are connected to the carrier.

2 is a cross-sectional view showing that the coupling portion of the terminal cut along the line AA 'of FIG.

Figure 3 is a cross-sectional view showing the configuration of a preferred embodiment of a terminal forming apparatus and method according to the present invention.

4 is an explanatory view sequentially showing that the coupling portion of the terminal is formed in the device according to the present invention.

Figure 5 is a cross-sectional view sequentially showing the shape in which the engaging portion of the terminal is formed in the device according to the present invention.

Explanation of symbols on the main parts of the drawings

1: carrier 2: terminal

3: body portion 4: barrel portion

5: coupling part 6: base

7: upright wall 8: ceiling

9: overlap plate 10: lower holder

12: backing plate 14: lower retainer

16: die pocket 20: swaging die

22: plate bending die 24: base die

26: ceiling plate die 28: upright wall die

29: bending cam 30: restoring member

32: interlocking inclined plane 34: overlap plate die

40: upper holder 42: backing plate

44: upper retainer 46: punch pocket

50: swaging punch 52: sheet bending punch

54: base punch 56: ceiling punch

56 ': machining surface 57: regulating protrusion

58: upright wall punch 59: driving slope

60: Stacking Punch

The present invention relates to a terminal forming apparatus and method, and more particularly to an apparatus and method for forming a terminal having a coupling portion in the shape of a square cylinder.

In progressive molds, products are produced in the form of straps with terminals connected to the carrier at regular pitch intervals. In the progressive mold, a plurality of dies and punches are installed to correspond to each other at regular pitch intervals so that the work is sequentially performed on each part of the strap so that the terminal can be finally manufactured. Here, the terminal refers to the final product, but in the present specification, the part that will be the terminal, that is, the part of the strap on which work has not yet been completed, is also referred to as a terminal for convenience.

Recently, especially as the coupling portion of the terminal has various functions, its configuration tends to be very complicated. Thus, making the coupling portion of the terminal more accurate and robust is one of the tasks of those skilled in the art.

Accordingly, an object of the present invention is to solve the conventional problems as described above, and to provide a terminal forming apparatus and method for forming a terminal having a coupling portion formed in a rectangular cylinder shape, in particular, the overlap plate is superimposed on the ceiling plate. will be.

According to a feature of the present invention for achieving the above object, the present invention is an upright wall is formed orthogonal to both ends of the base and the top plate and the overlap plate is provided at the tip of the upright wall, respectively, the overlap plate is overlapped on the ceiling plate A terminal forming apparatus for forming a terminal having a coupling portion, comprising: a lower mold holder having a lower mold retainer; An upper mold holder provided above the lower mold holder and relatively lifted with respect to the lower mold holder and provided with an upper mold retainer; A swaging die and a swaging punch installed on the lower retainer and the upper retainer so as to flatten the portion to be the coupling part; Plate bending dies and sheet bending punches installed in correspondence with the lower mold retainer and the upper retainer to bend the portion to be the ceiling plate and the overlapping plate at an angle with respect to the portion to be the upright wall; A base die and a base punch installed on the lower retainer and the upper retainer so as to be bent at a predetermined angle with respect to the portion to be the upright wall; A ceiling plate die and a ceiling plate punch installed at the lower mold retainer and the upper retainer so as to be bent at a right angle with respect to a portion to be one upright wall; An upright wall die and an upright wall punch installed on the lower retainer and the upper retainer so as to be bent by a bending cam perpendicular to the base; And a stacking plate die and a stacking plate punch installed to correspond to each other in the lower mold retainer and the upper retainer to bend the portion to be the stacking plate with respect to the ceiling plate.

The plate bending die has a recessed portion having a width equal to the width of the base and the standing wall, and the base die, the ceiling plate die, and the overlapping plate die have a recessed portion having the same width as the base.

The ceiling plate punch has a processing surface on which a portion to be the ceiling plate is seated is inclined, and one end of the processing surface is provided with a restriction protrusion to contact the tip of the portion to be the ceiling plate.

On both sides of the upright wall die, a bending cam, which is supported in a direction away from each other by a restoring member and has an interlocking inclined surface interlocked with a driving inclined surface of the upright wall punch, is rotatably installed around the rotary pin at the lower end thereof. do.

The base die and the ceiling piece die have the same shape.

According to another feature of the invention, the present invention is formed by forming a terminal having an upright wall is formed perpendicular to both ends of the base, and the top plate and the overlap plate is provided at the front end of the upright wall, respectively, the coupling portion overlapping the overlap plate on the ceiling plate The method includes: a first step of flatly swaging a portion to be a coupling portion of the terminal; and a second bending portion of the terminal to be inclined with respect to a portion to be a base and a portion to be overlapped with a ceiling plate provided at both ends of the coupling portion. A second step of bending the portion to be the upright wall with respect to the base to have a predetermined angle, and a fourth step of bending the portion to be the ceiling plate to be perpendicular to the portion to be the upright wall; And a fifth step of bending the portion to be the upright wall to be orthogonal to the base, and the portion to be the overlap plate with respect to the upright wall is orthogonal. It to the plate portion to be overlapped is configured to include a sixth step of overlap in the top plate.

In the fifth step, the portions to be upright walls are pushed and bent using a bending cam in a direction adjacent to each other.

According to the terminal forming apparatus and method according to the present invention having such a configuration, it is possible to more accurately and firmly form a coupling portion having a rectangular cylindrical shape so that the overlap plate overlaps the ceiling plate, thereby increasing the quality of the terminal.

FIG. 1 is a plan view showing the configuration of a strap in which a plurality of terminals are connected to a carrier, and FIG. 2 is a cross-sectional view showing that a coupling portion of a terminal cut along the line AA ′ of FIG. 1 is completed. 3 shows a schematic cross-sectional view of a terminal forming apparatus according to the present invention.

First, referring to Figures 1 and 2, looks at the configuration of the terminal (2) made in the terminal forming apparatus according to the present invention. The terminal strap means that the terminal 2 is connected to the carrier 1 at a constant pitch interval. The terminal 2 is provided with a barrel portion 4 at one end of the body portion 3, the coupling portion 5 is provided at the other end of the body portion 3 that is opposite to the barrel portion (4).

The body portion 3 is a portion forming the skeleton of the terminal 2, and is not actually a clearly divided portion of the barrel portion 4 and the coupling portion (5). The barrel portion 4 is a portion that is connected to the electric wire, and the coupling portion 5 is a portion that is coupled to the mating terminal. In general, the coupling portion 5 is configured in a box shape at the receptacle terminal.

A cross-sectional view corresponding to the line A-A of FIG. 1 among the coupling parts 5 is shown in FIG. 2. 2 is a state in which the engaging portion 5 of the terminal 2 is completed. The base 6 here forms the bottom of the coupling part 5. At both ends of the base 6, an upstanding wall 7 is formed bent to be perpendicular to the surface of the base 6. A ceiling plate 8 is formed at the tip of one of the upstanding walls 7. The ceiling plate 8 is formed to face the base 6 to form a ceiling of the inner space of the coupling portion 5. The other end of the upstanding wall 7 is provided with an overlapping plate 9 to be superimposed on the ceiling plate 8.

Meanwhile, referring to FIG. 3, a preferred embodiment of a terminal forming apparatus for forming the engaging portion 5 of the terminal 2 of the type shown in FIGS. 1 and 2 will be described.

On the lower mold holder 10, the backing plate 12 and the lower mold retainer 14 are mounted. The backing plate 12 and the lower mold retainer 14 are fastened together on the lower mold holder 10. The backing plate 12 may be considered to be substantially part of the lower mold retainer 14. The die pocket 16 is formed in the lower mold retainer 14 to be opened upward. A plurality of die pockets 16 are formed in the lower mold retainer 14 at predetermined pitch intervals. For reference, the lower mold retainer 14 may have a substantially rectangular plate shape, and a plurality of lower mold retainers 14 may be provided in the entire progressive mold.

A swaging die 20 is installed in one of the die pockets 16 of the lower retainer 14. The swaging die 20 is formed to have a larger width than that when the coupling portion 5 is in the unfolded state. The swaging die 20 serves to support the terminal 2 at the time of flattening the coupling part 5 which is not yet bent.

A plate bending die 22 is installed in the die pocket 16 adjacent to the swaging die 20. A recess 22 'is formed on a surface of the sheet bending die 22. The width of the recess 22 'is equal to the sum of the widths of the base 6 of the coupling part 5 and the upstanding walls 7 on both sides. Inclined surfaces 23 are formed at both sides of the recess 22 '. The inclined surface 23 is formed to be inclined downward toward the bottom surface of the recess 22 '. The portion of the ceiling plate 8 and the overlap plate 9 is bent by a predetermined angle with respect to the portion of the upstanding wall 7 by the inclined surface 23.

A base die 24 is installed in the die pocket 16 adjacent to the sheet bending die 22. Concave portions 24 ′ are formed on the surface of the base die 24. The width of the concave portion 24 ′ is formed to correspond to the width of the base 6. At both ends of the concave portion 24 ′, an inclined surface 25 is formed to be inclined at a predetermined angle. The inclined surface 25 is formed to be inclined downward toward the inside of the concave portion 24 ′. The inclined surface 25 causes the portion of the upstanding wall 7 to be bent by a predetermined angle with respect to the base 6.

The die plate 16 adjacent to the base die 24 is provided with a ceiling plate die 26. The ceiling plate die 26 supports the engaging portion 5 of the terminal 2 when the portion to be the ceiling plate 8 is bent orthogonal to the one upright wall 7. Concave portions 26 'are formed on the surface of the ceiling plate die 26, and both inner surfaces of the concave portions 26' are inclined with respect to the bottom surface of the concave portions 26 '. The ceiling plate die 26 has the same shape as the base die 24.

An upright wall die 28 is provided in the die pocket 16 adjacent to the ceiling plate die 26. The upright wall die 28 may have a width such that an upper surface thereof can be mounted on the base 6. The surface of the upstanding wall die 28 is formed flat.

In the die pocket 16 in which the upright wall die 28 is installed, the bending cam 29 is installed so as to be rotated around the rotary pin 29 'at the lower end of the upright wall die 28, one facing each other. . The bending cam 29 has a tendency to rotate in a direction away from each other by the restoring member 30 penetrating the upright wall die 28. On the upper end of the bending cam 29 is formed an interlocking inclined surface 32 which is interlocked with the drive inclined surface 59 of the upright wall punch 58 to be described below.

The die pocket 16 adjacent to the upright wall die 28 is provided with an overlap plate die 34. A concave indentation 34 'is formed on an upper surface of the overlap plate die 34. The concave indentation 34'0 has a width to which the base 6 can be placed and is formed flat.

A backing plate 42 and an upper retainer 44 are installed on the lower surface of the upper holder 40. The upper holder 40 is lifted by a separate device. The backing plate 42 and the upper retainer 44 are mounted together on the upper holder 40. In fact, the backing plate 42 may be regarded as part of the upper retainer 44.

A plurality of punch pockets 46 are formed in the upper retainer 44, and the punch pockets 46 each punch 50 corresponding to the dies 20, 22, 24, 26, 28, and 34. , 52, 54, 56, 58 and 60 are installed. The punches 50, 52, 54, 56, 58, and 60 are integrally driven with the upper holder 40. The punches 50, 52, 54, 56, 58, and 60 are also installed in the upper retainer 44 at regular pitch intervals.

A swaging punch 50 is installed in the punch pocket 46 of the upper retainer 44 so as to correspond to the swaging die 20. The lower surface of the swaging punch 50 has a width corresponding to the width of the swaging die 20. The lower surface of the swaging punch 50 is formed flat. The swaging punch 50 strikes the engaging portion 5 of the terminal 2 seated on the swaging die 20 so that the entire engaging portion 5 of the terminal 2 is flat.

The sheet bending punch 52 is installed in the punch pocket 46 of the upper retainer 44 to correspond to the sheet bending die 22. The sheet bending punch 52 cooperates with the recess 22 'of the sheet bending die 22 so that the ceiling plate 8 and the stacking plate 9 of the terminal 2 become the upstanding wall 7. Molded to be bent at an angle to the portion.

Next, a base punch 54 is installed in the punch pocket 46 of the upper retainer 44 so as to correspond to the base die 24. The tip of the base punch 54 has a width that can be seated in the recess 24 'of the base die 24. The base punch 54 cooperates with the recess 24 'of the base die 24 so that the upstanding wall 7 is bent at a predetermined angle at both ends of the base 6.

The ceiling plate punch 56 is installed in the punch pocket 46 of the upper retainer 44 to correspond to the ceiling plate die 26. The ceiling plate punch 56 cooperates with the ceiling plate die 26 to bend the ceiling plate 8 to be perpendicular to the upstanding wall 7.

To this end, the machining surface 56 ′ is formed to be inclined at the tip surface of the ceiling plate punch 56. The inclination of the processing surface 56 ′ is a ceiling plate 8 relative to the upstanding wall 7 in consideration of the fact that the upstanding wall 7 on which the ceiling plate 8 is provided is bent relative to the base 6. ) Is designed to bend vertically. A regulating protrusion 57 is formed at one end of the processing surface 56 ′. The regulating protrusion 57 is bent against the upright wall 7 when the tip of the ceiling plate 8 is engaged and the ceiling plate punch 56 exerts a force on the engaging portion 5. To be possible.

An upright wall punch 58 is provided in the punch pocket 46 of the upper retainer 44 corresponding to the upright wall die 28. The upright wall punch 58 provides a driving force for driving the bending cam 29 and is not in direct contact with the engaging portion 5 side of the terminal 2. The upright wall punch 58 is provided with a driving inclined surface 59 corresponding to the interlocking inclined surface 32 of the bending cam 29. The driving inclined surface 59 is formed to face each other on the lower surface of the upright wall punch 58, and the driving inclined surface 59 at both ends moves away from the front end.

On the other hand, the lamination plate punch 60 is provided in the punch pocket 46 of the upper retainer 44 corresponding to the lamination plate die 34. The stacking plate punch 60 is bent to overlap the ceiling plate 8 by bending the stacking plate 9 perpendicularly to the upstanding wall 7. The lower surface of the overlap plate punch 60 is formed so that the recessed pressing groove 62 is recessed. For reference, both ends of the overlapping plate punch 60 protrude more than the height of the upstanding wall 7 with respect to the inner surface of the recessed pressing groove 62. Accordingly, a configuration (not shown), for example, a recess for preventing interference with both ends of the stack plate punch 60 is provided in the stack plate die 34.

Hereinafter will be described in detail the operation of the terminal forming apparatus and method according to the present invention having the configuration as described above.

4 and 5, a process of forming the coupling part 5 of the terminal 2 will be described. The terminal 2 made as in the state of FIG. 1 is hit by the swaging punch 50 in a state seated on the swaging die 20 in order to remove and flatten the burrs generated during the cutting operation. In this case, the part to form the engaging part 5 of the said terminal 2 is processed flat, and the burr etc. which generate | occur | produced at the time of cutting | disconnection etc. disappear. This state is shown in FIGS. 4A and 5A.

Next, by the sheet bending die 22 and the sheet bending punch 52, the portions to be the ceiling plate 8 and the overlapping plate 9 are bent by a predetermined angle to the portions to be the upstanding walls 7. . This state is shown in FIGS. 4B and 5B.

The base die 24 and the base punch 54 are bent so as to have a predetermined angle with the base 6 to be the wall 7. The angle that the portion to be the upright wall 7 makes with respect to the base 6 is determined by the angle of the inclined surface 25 of the base die 24. A state in which work is performed by the base die 24 and the base punch 54 is shown in FIG. 4C, and a state in which the work is performed by the base die 24 and the base punch 54 is shown in FIG. 5C.

Next, the portion to be the ceiling plate 8 is bent orthogonally to the upright wall 7 by the ceiling plate die 26 and the ceiling plate punch 56. At this time, the base 6 is seated on the recess 26 'of the ceiling plate die 26, and the ceiling plate punch 56 is lowered to become the ceiling plate 8 on the processing surface 56'. The part is seated and the tip of the part to be the ceiling plate 8 is in a state of being hooked on the regulating protrusion 57 so that the part to be the ceiling plate 8 is bent orthogonally to the upright wall 7. This state is shown in FIGS. 4D and 5D.

After bending the portion to be the ceiling plate 8 orthogonally to the portion to be the upright wall 7, as described above, the portions to be the upright wall 7 on both sides are perpendicular to the base 6. Bend. To this end, when the upright wall punch 58 is lowered by the upper holder 40, the interlocking inclined surface 32 of the bending cam 29 is guided to the driving inclined surface 59, and the bent cams 29 on both sides thereof. ) Is rotated to be adjacent to each other while overcoming the elastic force of the restoring member (30).

In this case, the portion to be the upstanding wall 7 which has been bent at a predetermined angle with respect to the base 6 is bent so as to be perpendicular to the base 6. At this time, the tip of the portion to be the ceiling plate 8 is located in contact with the upper end of the portion to be the opposite upright wall 7. This state is shown in FIGS. 4E and 5E.

When processing as described above, the base 6, the upstanding wall 7 and the ceiling plate 8 constitute a rectangular cylindrical shape except for the portion to be the overlapping plate (9). In other words, only the portion to be the overlapping plate 9 is not orthogonal to the upstanding wall 7, so that it is inclined spaced apart from the ceiling plate 8.

Next, in the stacking plate die 34 and the stacking plate punch 60, a bending operation is performed so that the portion to be the stacking plate 9 is seated on the top surface of the ceiling plate 8. This is performed by pressing the portion of the overlap plate 9 to be pressed by the recess pressing groove 62 of the overlap plate punch 60. This state is shown in FIGS. 4F and 5F.

The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self-evident.

In the terminal forming apparatus and method according to the present invention as described in detail above, the following effects can be obtained.

In the present invention, it is possible to form a rectangular cylinder shape, in particular, the coupling portion formed by overlapping the overlap plate on the ceiling plate more accurately and firmly, thereby increasing the quality of the terminal.

Claims (7)

In the terminal forming apparatus for forming a terminal having an upright wall is formed perpendicularly to both ends of the base and the top plate and the overlap plate are provided at the ends of the upright wall, respectively, the terminal having a coupling portion overlapping the overlap plate on the ceiling plate, A lower mold holder having a lower mold retainer; An upper mold holder provided above the lower mold holder and relatively lifted with respect to the lower mold holder and provided with an upper mold retainer; A swaging die and a swaging punch installed on the lower retainer and the upper retainer so as to flatten the portion to be the coupling part; Plate bending dies and sheet bending punches installed in correspondence with the lower mold retainer and the upper retainer to bend the portion to be the ceiling plate and the overlapping plate at an angle with respect to the portion to be the upright wall; A base die and a base punch installed on the lower retainer and the upper retainer so as to be bent with respect to the base at a predetermined angle; A ceiling plate die and a ceiling plate punch installed at the lower mold retainer and the upper retainer so as to be bent at a right angle with respect to a portion to be one upright wall; An upright wall die and an upright wall punch installed on the lower retainer and the upper retainer so as to be bent by a bending cam perpendicular to the base; And a stacking plate die and a stacking plate punch installed to correspond to each other in the lower mold retainer and the upper retainer so as to overlap the ceiling plate with a portion to be overlapped with the ceiling plate. The method of claim 1, wherein the plate bending die has a concave portion having a width equal to the width of the base and the standing wall, and the base die, the ceiling plate die and the overlap plate die is formed with a concave portion having the same width as the base. Terminal Forming Device According to claim 1 or claim 2, The ceiling plate punch is formed on the processing surface on which the portion to be the ceiling plate is formed to be inclined, One end of the processing surface is formed with a restriction protrusion to contact the tip of the portion to be the ceiling plate. Terminal molding apparatus characterized in that. 4. The bending cam of claim 3, wherein a bending cam having both sides of the upright wall die supported in a direction away from each other by a restoring member, and having an interlocking inclined surface interlocked with a driving inclined surface of the upright wall punch at a front end thereof. Terminal forming apparatus, characterized in that rotatably installed around the center. The terminal forming apparatus according to claim 4, wherein the base die and the ceiling piece die have the same shape. In the method of forming a terminal having an upright wall is formed orthogonal to both ends of the base, and the top plate and the overlap plate is provided at the front end of the upright wall, respectively, and the coupling portion having the overlap plate overlapped on the ceiling plate, A first step of flat swaging a portion to be a coupling portion of the terminal; A second step of bending the portion to be the base plate and the overlap plate provided at both ends of the portion to be coupled inclined with respect to the portion to be the base; A third step of bending the portion to be the upright wall with respect to the base to have a predetermined angle; A fourth step of bending the portion to be the ceiling plate to be perpendicular to the portion to be the upright wall; A fifth step of bending the portion to be the upright wall to be orthogonal to the base; And a sixth step of making the portion to be the overlapping plate perpendicular to the upright wall such that the portion to be the overlapping plate overlaps the ceiling plate. 7. The method of claim 6, wherein in the fifth step, the portions to be the upright wall are pushed and bent using a bending cam in a direction adjacent to each other.

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