KR100846845B1 - Terminal forming apparatus and method - Google Patents

Abstract

A terminal forming apparatus and a terminal forming method are provided to form joining parts of a terminal on which bent members are formed in the direction that is parallel and opposite to the extending direction of upright walls of the terminal. A terminal forming apparatus comprises: a bottom mold holder(10) having a bottom mold retainer(14); a top mold holder(30) formed above the bottom mold holder, lifted relatively to the bottom mold holder, and equipped with a top mold retainer(34); a swaging die(20) and a swaging punch(40) respectively installed at positions corresponding to those of the bottom and top mold retainers to process portions to be joining parts in a flat shape; a first bent member die(22) and a first bent member punch(42) respectively installed at positions corresponding to those of the bottom and top mold retainers to form both ends of the portions to be the joining parts such that parallel extending bent members on the both ends of the portions to be the joining parts are perpendicular to portions to be upright walls; a base die(24) and a base punch(44) respectively installed at positions corresponding to those of the bottom and top mold retainers to bend the portions to be the upright walls to a predetermined angle relative to a base; an upright wall die(26) and an upright wall punch(46) respectively installed at positions corresponding to those of the bottom and top mold retainers to bend the portions to be the upright walls at a right angle relative to the base; and a second bent member die(28) and a second bent member punch(48) installed at positions corresponding to those of the bottom and top mold retainers to bend portions to be parallel extending bent members such that the portions to be parallel extending bent members extend in the parallel opposite direction relative to the portions to be the upright walls.

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: parallel extension bending piece

10: Lower holder 12: Backing plate

14: Lower retainer 16: Die pocket

20: swaging die 22: first bending die

24: base die 26: upright wall die

28: 2nd bending die 29: adjusting die

30: Pictograph holder 32: Backing plate

34: Upper retainer 36: Punch pocket

40: swaging punch 42: first bending punch

44: base punch 46: upright punch

48: 2nd bending punch 50: Adjustment punch

The present invention relates to a terminal forming apparatus and method, and more particularly, to a terminal forming apparatus and method for forming upright walls and bent pieces parallel to each other and extending in opposite directions to the engaging portion of the terminal.

In progressive molds, a terminal is produced with a strap that is 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 an engaging portion of a terminal having a bent piece in parallel to the direction opposite to the extending direction of the upright wall. .

According to a feature of the present invention for achieving the object as described above, the present invention provides a terminal having a coupling portion extending in parallel extending bending pieces in the opposite direction in parallel with the extending direction of the upright wall formed perpendicular to both ends of the base; A terminal molding apparatus for molding, comprising: a lower mold holder provided with 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 at positions corresponding to each other of the lower mold retainer and the upper retainer, respectively, to flatten the portion to be the coupling part; A first bending piece die and a first bending piece punch installed at positions corresponding to each other of the lower type retainer and the upper shape retainer to form a portion to be parallel extended bending pieces at both ends of the portion to be coupled to each other at right angles to the portion to be coupled to the coupling portion; A base die and a base punch which are respectively installed at positions corresponding to each of the lower retainer and the upper retainer and bend a portion to be an upright wall with respect to the base at a predetermined angle; An upright wall die and an upright wall punch installed at respective positions of the lower retainer and the upper retainer to be bent at a right angle with respect to the base; A second bending piece die and a second bending piece punch installed at a position corresponding to each other of the lower retainer and the upper retainer to bend to extend the parallel extension bending piece in parallel to the upright wall in the opposite direction; It is composed.

Each of the swaging die and the first bending piece die has a concave portion having a width corresponding to the width of the joining portion in a state in which the molding is completed on the die, and the corresponding swaging punch and the first bending piece punch are respectively recessed. A lower surface having a width corresponding to the negative width is provided.

The base die is provided with a concave indentation having a width corresponding to the width of the base, and on both inner surfaces of the concave indentation are formed slopes inclined downward toward the concave part, the lower surface of the base punch is the width of the concave indentation of the base die Interference prevention grooves are formed on both side surfaces of the base punch, respectively, having a width corresponding to.

A concave indentation having a width corresponding to the width of the base is formed on a surface of the upright wall die, and a bent piece groove and a parallel elongated bent piece that guide the shape of the parallel elongated bent piece are formed on a lower surface of the upright wall punch. A standing guide surface is formed.

On the lower surface of the second bending piece punch corresponding to the second bending piece die, a bending piece groove corresponding to the shape of the parallel extension bending piece and a protruding curved surface for guiding the parallel extension bending piece are formed, and the protruding curved surface and the bending The wallpaper surface is formed to connect the flat recesses.

The second bending piece die and the second bending piece punch are respectively installed at positions corresponding to each other of the lower retainer and the upper retainer respectively passing through the position to be the parallel extension bending piece once again parallel to the upright wall And an adjustment die and an adjustment punch bent to extend in the direction.

The adjusting die and the adjusting punch have the same shape as the second bending piece die and the second bending piece punch.

According to another feature of the present invention, the present invention provides a method for forming a terminal having a coupling portion extending in parallel in the opposite direction parallel to the extending direction of the upright wall formed perpendicular to both ends of the base, the terminal A first step of flattening the portion to be the coupling portion of the second step, and a second step of bending the portion to be the parallel extension bending pieces provided at both ends of the portion to be the coupling portion orthogonally to the portion to be the upstanding wall; A third step of bending the portion to be the upright wall with respect to the base at a predetermined angle; and the portion to be the parallel extension bending piece while bending the portion to be the upright wall with respect to the base at a right angle. And a fourth step of bending the angle further, and a fifth step of bending a portion to be the parallel extension bending piece in parallel with the upstanding wall. It is sex.

After the fifth step, a sixth step of preventing the deformation of the parallel extension bending piece by springback is further performed by bending the portion to be the parallel extension bending piece with respect to the upright wall.

According to the terminal forming apparatus and method according to the present invention having the configuration as described above, it is possible to more precisely and firmly form the coupling portion of the terminal in which the parallel extension bending pieces are formed in the direction opposite to the extending direction of the upright wall, thereby increasing the quality of the terminal. There is an advantage.

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 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 7 at one end of the body portion 3, the other side of the barrel portion 7 is provided with a coupling portion 5 at the other end of the body portion (3).

The body part 3 forms a skeleton of the terminal 2, and is not actually a part clearly defined with respect to the barrel part 7 and the coupling part 5. The barrel portion 5 is a portion that is connected to the wire, 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 parallel extension bending piece 8 is formed at the tip of the upstanding wall 7. The parallel extension bending piece 8 is parallel to the upstanding wall 7, and its extending direction becomes opposite to the extending direction of the upstanding wall 7. Of course, the parallel extension bending piece 8 extends from the tip of the upstanding wall 7. For reference, the upper end portion of the parallel extension bending piece 8 and the upstanding wall 7 corresponding thereto has a shape of 'U' inverted.

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. A seating pocket 16 is formed in the lower mold retainer 14 to be opened upward. The seating pocket 16 is formed in the lower retainer 14, a plurality of predetermined 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 seating pockets 16 of the lower retainer 14. The swaging die 20 has a recess 20 'formed on its surface. The recess 20 'has a width equal to or slightly larger than the width of the engaging portion 5 when the engaging portion 5 is not yet bent (FIG. 5A). The swaging die 20 serves to support the terminal 2 at the time of flattening the coupling part 5 which is not yet bent.

The first bending piece die 22 is installed in the die pocket 16 adjacent to the swaging die 20. The first bent piece die 22 is also formed with a recess 22 'on its surface. The width between the concave portions 22 'is made to have a width corresponding to the width of the engaging portion 5 when the parallel extension bending piece 8 is vertically bent at both ends of the engaging portion 5.

A base die 24 is formed in the die pocket 16 adjacent to the first bent piece 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 ′.

An upright wall die 26 is formed in the die pocket 16 adjacent to the base die 24. The upstanding wall die 26 supports the terminal 2 when the upstanding wall 7 is bent at right angles to the base 6. Concave portions 26 'are formed on the surface of the upright wall 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 inclination is equal to or slightly larger than the inclination of the inclined surface 25 of the base die 24.

 The die pocket 16 adjacent to the upright wall die 26 is provided with a second bending piece die 28. The second bending piece die 28 may have a width such that an upper surface thereof can be mounted on the base 6. The surface of the second bending piece die 28 is formed flat.

An adjustment die 29 is provided in the die pocket 16 adjacent to the second bending piece die 28. The adjusting die 29 also has a width such that the upper surface thereof can be placed on the base 6, and is formed flat.

A backing plate 32 and an upper retainer 34 are installed on the lower surface of the upper holder 30. The upper holder 30 is lifted by a separate device. The backing plate 32 and the upper retainer 34 are mounted together on the upper holder 30. In fact, the backing plate 32 may be regarded as part of the upper retainer 34.

A plurality of punch pockets 36 are formed in the upper retainer 34, and punch holes 40 are formed in the punch pockets 36 to correspond to the respective dies 20, 22, 24, 26, 28, and 29. 42,44,46,48,49 are installed. The punches 40, 42, 44, 46, 48, and 49 are driven integrally with the upper holder 30. The punches 40, 42, 44, 46, 48, and 49 are also installed in the upper retainer 34 at regular pitch intervals.

A swaging punch 40 is installed in the punch pocket 36 of the upper retainer 34 to correspond to the swaging die 20. The lower surface of the swaging punch 40 has a width corresponding to the recessed portion 20 ′ of the swaging die 20. The lower surface of the swaging punch 40 is formed flat. The swaging punch 40 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.

A first bent piece punch 42 is provided in the punch pocket 36 of the upper retainer 34 to correspond to the first bent piece die 22. The first bending piece punch 42 cooperates with the recess 22 'of the first bending piece die 22 so that parallel extension bending pieces 8 are formed at both ends of the engaging portion 5 of the terminal 2. It is molded to be orthogonally bent. The width of the first bending piece die 22 has a width that can be inserted into the recess 22 'of the first bending piece die 22.

Next, a base punch 44 is installed in the punch pocket 36 of the upper retainer 34 so as to correspond to the base die 24. The base punch 44 has a width that can be seated in the recessed portion 24 ′ of the base die 24. The base punch 44 cooperates with the recess 24 'of the base die 24 so that the upstanding wall 7 is bent to have a predetermined angle with respect to the base 6.

Interference preventing grooves 45 are formed on both side surfaces of the base punch 44. In the process of bending the upstanding wall 7 completely with respect to the base 6, the interference preventing groove 45 may include a parallel extension bending piece 8 provided at the front end of the upstanding wall 7. It serves to prevent interference with the base punch 44.

The upright wall punch 46 is installed in the punch pocket 36 of the upper retainer 34 to correspond to the upright wall die 26. The upright wall punch 46 serves to bend the upright wall 7 to be completely perpendicular to the base 6 in cooperation with the upright wall die 26.

To this end, a bent piece-shaped groove 46 'is formed in the tip surface of the upright wall punch 46 to be recessed. The bent piece-shaped groove 46 'has a shape corresponding to that of the parallel extended bent piece 8. Accordingly, the parallel extension bent piece 8 is seated in the bent piece-shaped groove 46 'of the upright wall punch 46 to have a certain shape, and the upright wall 7 is also formed.

A concave guide surface 47 is formed at the inlet of the bent piece recess 46 'of the upright wall punch 46. The concave guide surface 47 has a predetermined inclination, and serves to guide the front end of the upright wall 7 and the parallel extension bending piece 8 to the inside of the bent piece groove 46 '.

A second bending piece punch 48 is provided in the punch pocket 36 of the upper retainer 34 corresponding to the second bending piece die 28. The second bending piece punch 48 is for forming the parallel extension bending piece 8 in parallel with the upstanding wall 7. The bent piece recess 48 'is formed in the bottom surface of the second bent piece punch 48, too. The bending piece groove 48 'is a groove having a shape to be mated with the parallel extension bending piece 8. A protruding curved surface 49 is formed at the inlet of the bending balance recess 48 ′ of the second bending piece punch 48. The protruding curved surface 49 is a bulging curved surface that serves to guide the parallel extension bending piece 8 more reliably to the inside of the bent piece groove 48 '.

Wall guide surfaces 49 'are formed at positions connecting the bent piece groove 48' and the protruding curved surface 49, respectively. The wall guide surface 49 'allows the outer surface of the upstanding wall 7 to be in close contact.

On the other hand, the adjustment punch 50 is provided in the punch pocket 36 of the upper retainer 34 corresponding to the adjustment die 29. The adjusting punch 50 has the same shape as the second bending piece punch 48. That is, the bent piece groove 50 ', the protruding curved surface 51 and the wall guide surface 51' are formed on the lower surface of the adjustment punch 50. The adjustment die 29 serves to prevent the springback phenomenon by further processing the parallel extension bending piece 8 again. However, the spring back phenomenon may not occur depending on the design conditions such as dimensions, so that the adjusting die 29 and the adjusting punch 50 are not necessarily required.

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 flat as shown in FIG. 1 is hit by the swaging punch 40 in a state seated on the swaging die 20 so as to remove and flatten the burrs generated during the cutting operation. . In this case, the part which becomes 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 first bending piece die 22 and the first bending piece punch 42, portions to be parallel extension bending pieces 8 at both ends of the portion to be the coupling portion 5 are bent at right angles. . This state is shown in FIGS. 4B and 5B.

Next, the base die 24 and the base punch 44 are bent to have a predetermined angle with respect to the portion to be the upright wall 7 with respect to the base 6. 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. For reference, the interference preventing groove 45 in the base punch 44 serves to prevent the parallel extension bending piece 8 from interfering with the base punch 44, as shown in FIG. 4C. A state in which work is performed by the base die 24 and the base punch 44 is shown in FIG. 4C, and a state in which the work is performed by the base die 24 and the base punch 44 is shown in FIG. 5C.

Next, the portion to be the upright wall 7 is bent perpendicularly to the base 6 by the upright wall die 26 and the upright wall punch 46. At this time, the base 6 is seated in the recess 26 'of the upright wall die 26, and as the upright wall punch 46 descends, parallel extension bent pieces (46) in the bending piece recess 46'. 8) is positioned so that the portion to be the upright wall 7 is bent at right angles to the base 6. This state is shown in FIGS. 4D and 5D. At this time, the portion to be the parallel extension bending piece 8 is also more bent than the previous step.

After the portion to be the upright wall 7 is bent perpendicularly to the base 6 as described above, the portion to be the parallel extension bending piece 8 is bent to be parallel to the upright wall 7. To this end, the wall guide surface 49 'guides the outer surface of the upright wall 7, and the portion to be the parallel extension bending piece 8 is the bending piece recess 48' of the second bending piece punch 48. It is to be seated in). This state is shown in FIGS. 4E and 5E.

And the part which becomes the parallel extension bending piece 8 is processed once again using the adjustment die 29 and the adjustment punch 50 so that the parallel extension bending piece 8 may not cause a springback phenomenon. This state is shown in FIGS. 4F and 5F. For reference, one or more pairs of the adjusting die 29 and the adjusting punch 50 may be used. This is to ensure the processing of the parallel extension bending piece 8 more reliably.

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, after processing the joining portion of the terminal is cut flat, the parallel extension bending pieces at both ends of the coupling portion is semi-processed, and the upright wall inside the parallel extension bending piece is divided into two times so as to stand upright with respect to the base. Then, the parallel extension curved piece was completely processed. By processing in this order there is an advantage that it is possible to more easily and accurately form the engaging portion of the terminal is provided with parallel extension bending pieces extending in the opposite direction in parallel with the extending direction of the upright wall.

Claims (9)

In the terminal forming apparatus for forming a terminal having a coupling portion extending in parallel in the opposite direction parallel to the extending direction of the upright wall formed perpendicular to both ends of the base, 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 at positions corresponding to each other of the lower mold retainer and the upper retainer, respectively, to flatten the portion to be the coupling part; A first bending piece die and a first bending piece punch installed at positions corresponding to each other of the lower retainer and the upper retainer to form a portion to be parallel extended bending pieces at both ends of the portion to be coupled to each other at right angles to a portion to be an upright wall; A base die and a base punch which are respectively installed at positions corresponding to each of the lower retainer and the upper retainer and bend a portion to be an upright wall with respect to the base at a predetermined angle; An upright wall die and an upright wall punch installed at a position corresponding to each other of the lower retainer and the upper retainer to be bent at a right angle with respect to the base; A second bending piece die and a second bending piece punch installed at a position corresponding to each other of the lower retainer and the upper retainer to bend the portion to be the parallel extension bending piece to extend in the opposite direction parallel to the portion to be the upright wall; Terminal forming apparatus configured to include. According to claim 1, wherein the swaging die and the first bending piece die is formed with a concave portion having a width corresponding to the width of the engaging portion in the state that the molding is completed in the die, respectively, the corresponding swaging punch and the first bending Knitting punches each having a lower surface having a width corresponding to the width of the recess portion forming apparatus According to claim 1, wherein the base die is formed with a recess having a width corresponding to the width of the base, On both inner surfaces of the recess is formed inclined surface inclined downward toward the recess, the lower surface of the base punch And a width corresponding to the width of the recessed portion of the base die, wherein both sides of the base punch are formed with interference preventing grooves, respectively. The surface of the upright wall die is provided with a recess having a width corresponding to the width of the base, the lower surface of the upright wall punch, the bending piece groove and the parallel extension corresponding to the shape of the parallel extension bent piece Terminal molding apparatus characterized in that the concave-shaped guide surface for guiding the bent piece is formed. The method of claim 1, wherein the lower surface of the second bending piece punch corresponding to the second bending piece die is formed with a bent piece groove corresponding to the shape of the parallel extension bent piece and a protruding curved surface for guiding the parallel extension bent piece, Terminal forming apparatus, characterized in that the wallpaper surface is formed to connect the protruding curved surface and the bent piece groove. The parallel extension bending piece according to any one of claims 1 to 5, wherein the parallel extension bending piece is installed at a position corresponding to each other of the lower retainer and the upper retainer respectively passing through the positions of the second bending piece die and the second bending piece punch. And an adjusting die and an adjusting punch for bending the portion to be extended once again in parallel to the portion to be the upright wall. 7. The terminal forming apparatus according to claim 6, wherein the adjusting die and the adjusting punch have the same shape as the second bending piece die and the second bending piece punch. In the method for forming a terminal having a coupling portion extending parallel parallel bending piece in the opposite direction parallel to the extending direction of the upright wall formed perpendicular to both ends of the base, A first step of flat swaging a portion to be a coupling portion of the terminal; A second step of bending a portion to be a parallel extension bending piece provided at both ends of the portion to be coupled to be perpendicular to the portion to be the upright wall; A third step of bending the portion to be the upright wall with respect to the portion to be the base to have a predetermined angle; A fourth step of bending the portion to be the upright wall to be perpendicular to the base while bending the portion to be the parallel extension bending piece by a predetermined angle; And a fifth step of bending the portion to be the parallel extension bending piece in parallel to the upright wall. The terminal of claim 8, further comprising, after the fifth step, performing a sixth step of bending the parallel extension bending piece against the upright wall once again to prevent deformation of the parallel extension bending piece by springback. Molding method.

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