JP2002224754A - Molding method and molding die for electronic and machine parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a molding method and a molding die for efficiently bending a tongue with slanting-form which forms an elastic piece of a female connector. SOLUTION: In an upper mold 1 capable of moving vertically, a molding member 5, consisting of a molding tool 3 and a holder 4, is held and connected between a guide plate 14 and a loading plate, and in a lower mold 2, a pair of guide bodies 6, 7 capable of vertically guiding the molding member 5 are protruded, and the molding member 5, maintained horizontal state by slanting cam surfaces 8, 9 formed at the lower part of the guide bodies, is capable of sliding to a slanting direction. At the bottom dead center position of the molding member 5, a projected piece continuously set at a metal plate between a molding projection 12 protruded at the lower part of the molding member and a receiving stand 11 set at the lower mold, is bent to slanting-form in a molding space 13 of the molding tool.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for molding various electronic parts and mechanical parts used in various kinds of electronic equipment, electric equipment, machinery and the like, and a mold for molding various parts. .

[0002]

2. Description of the Related Art Various kinds of electronic equipment, electric equipment, mechanical equipment, and the like, for example, many electronic parts and mechanical parts are used in automobiles, and these parts are molded by a mold and formed into a required shape. Formed and used as final parts.

FIG. 8 shows an example of an electronic component (connector) conventionally used in an automobile.
The long strip-shaped metal plate serving as the original plate is intermittently fed at predetermined intervals along the length direction into the mold composed of the upper die and the lower die, and continuously passes through several tens of steps to obtain the final shape. This completes the part a.

[0004] In the case of a connector, a protruding piece b projecting horizontally outward may be bent inward to form a resilient connection piece in the component a. In order to bend the protruding piece b inward in this way, first, the tip of the protruding piece b is bent upward in a substantially vertical state, and the bent tip is bent inwardly in an inclined manner. It is necessary to press flatly, and these are performed in several steps.

[0005] In contrast to the fixed lower mold, the upper mold repeats vertical movements in the vertical direction to form a metal plate. The upper mold is formed by bending the protruding piece b inward and inclining. When the provided forming tool is lifted, the forming tool hits the protruding piece b bent in an inclined manner from below, so that the protruding piece c is pushed up vertically upward, and the inclined state cannot be maintained. .

Accordingly, a molding projection is provided at the lower end of the molding tool provided on the upper mold so that only the molding tool is rotated up and down to the molding position and the lower molding tool is moved horizontally to the molding position. When the upper mold reaches the bottom dead center, the protruding piece b is bent in an inclined manner between the upper mold and the lower mold, and the upper mold rotates while rising. Then, the molding protrusion comes off from the projecting piece b in the inclined state, and the projecting piece b
I was trying not to touch.

[0007]

However, in order to rotate the molding tool, a guide member having a cam surface is required, and a moving member for reciprocating the lower molding tool is required. In addition, the number of parts of the molding member provided in the lower mold increases, and it is necessary to operate the upper molding tool and the lower molding tool simultaneously, and the lower molding tool is moved from the molding position to the original position. Since a spring is used to move the upper die, the upper die has a limit of 600 to 800 rotations, which limits the production of parts.

In addition, when the molding tool and the guide member are used continuously for a long period of time due to contact between the cam surfaces, etc., the contact surface is worn,
In some cases, accurate initial operation could not be achieved, resulting in a large economic loss. The above-described molding method and mold are applied not only to electronic components but also to mechanical components, but have similar problems.

The present invention has been made in view of the above-described problems of the conventional molding method and mold, and has a structure in which the number of parts constituting a molding member is reduced, and a tongue piece projecting in a horizontal direction of a part to be molded with a simple structure is provided. Bend in an inclined manner, and maintain the bent state so that the upper mold can be moved upward,
Another object of the present invention is to provide a molding method and a molding die for electronic parts and mechanical parts, which can increase the number of revolutions of the upper mold because no spring is used, mass-produce the parts, and are economically efficient. Is what you do.

[0010]

In order to achieve the above-mentioned object, a molding method according to the present invention comprises a molding member 5 including a molding tool 3 and a holding tool 4 connected to an upper mold 1 projecting from a lower mold 2. Is vertically movable along the pair of guides 6 and 7, and the molding member 5 is slid to one side in a horizontal state, and the molding member 5 is moved downward by a downward pressure in the vertical direction. The projecting piece 17 connected to the metal plate 16 can be bent in an inclined manner between the projecting projection 12 and the receiving stand 11 provided on the lower mold 2.

In the molding die of the present invention, a molding member 5 composed of a molding tool 3 and a holding tool 4 connected to an upper mold 1 is arranged between a pair of guides 6 and 7 projecting from a lower mold 2. The molding member 5 is slid to one side in a horizontal state so as to be able to move up and down, and at the same time, the molding protrusion 12 and the lower mold 2 projecting from the lower part of the molding tool 3 by the downward pressure of the molding member 5 in the vertical direction
The projecting piece 17 connected to the metal plate 16 can be bent in an inclined manner between the receiving piece 11 and the receiving base 11.

The molding die according to the present invention comprises a molding tool 3 having a molding projection 12 and a molding space 13 at a lower portion, and a holding tool 4 for holding the molding tool 3. The molded member 5 sandwiched between the plate 15 is guided by the upper mold 1 along a pair of guides 6 and 7 projecting from the lower mold 2 so as to be vertically movable and formed on the guides 6 and 7. The inclined cam surfaces 8 and 9 make it possible to slide in the inclined direction in a horizontal state.
A projecting piece 17 connected to the metal plate 16 between the base 2 and the receiving base 11 provided on the lower mold 2 can be bent obliquely into the molding space 13 of the molding tool 3.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and FIG.
Is an upper mold, and 2 is a lower mold. The upper mold 1 moves up and down with respect to the fixed lower mold 2 to continuously form a long strip-shaped metal substrate into a predetermined shape in each process. Is the same as the conventional mold.

In the present invention, a molding member 5 comprising a molding tool 3 and a holder 4 is connected to an upper mold 1 and a lower mold 2 is formed.
, A pair of guides 6 and 7 for guiding the vertical movement of the molding member 5 are protruded upward, and the molding member 5 is inclined in a horizontal state below the opposing surfaces of the guides 6 and 7. It is characterized in that inclined cam surfaces 8 and 9 for sliding in the directions are provided symmetrically by changing the vertical position, and a receiving stand 11 is provided facing the molding stand 10 of the lower die 2. are doing. FIG. 1 shows the top dead center position of the molding member 5, and FIG. 2 shows the bottom dead center position of the molding member 5.

A molding tool 3 made of a vertically elongated metal plate is similarly fixed to the center of the metal holding tool 4 and protruded downward from the holding tool 4. Is formed with a molding projection 12 directed toward the guide body 6, and a molding space 13 is formed above the molding projection 12 so as to be inclined inward.

The holding tool 4 for holding the molding tool 3 at the center is adapted to move up and down on both sides in contact with the inner surfaces of the guides 6 and 7, and the cam surfaces 8 and 9 of the guides 6 and 7. Can be tilted. For this reason, an inclined surface 4 a having the same angle as the inclined angle of the cam surface 8 is formed at the upper corner of the holder 4 facing the guide body 6. Further, an inclined surface 4 b having the same angle as the inclined angle of the cam surface 9 is formed at a lower corner of the holder 4 facing the guide 7.

As shown in FIG. 3 on an enlarged scale, a guide plate 14 is provided on the upper surface of the molding member 5, and both sides of the holder 4 are placed on a mounting plate 15, so that the molding member 5 Numeral 5 is a state sandwiched between the guide plate 14 and the mounting plate 15. The guide plate 14 and the mounting plate 15 are respectively fixed to the upper mold 1, but the molding member 5 is not fixed to the upper mold 1 and the guide members on both sides between the guide plate 14 and the mounting plate 15 are fixed. It is possible to slide between 6 and 7.

As shown in FIG. 4, the molding member 5 descends from the top dead center position of the solid line as the upper mold 1 descends, and the holder 4 is moved to the cam surfaces 8 and 9 of the guides 6 and 7 as shown by the chain lines. When it reaches, first, the inclined surface 4b comes into contact with the cam surface 9, and then the inclined surface 4a comes into contact with the cam surface 8, so that the molding member 5 maintains the horizontal state and the inclination direction along the cam surfaces 8, 9 on both sides. (To the left in the figure).

When the molding member 5 is further lowered, and the holder 4 reaches between the side surfaces of the guides 6 and 7 below the cam surfaces 8 and 9, the molding projection 12 is moved upward above the tip of the receiving base 11. A gap is formed between the tip of the receiving table 11 and the molding projection 12 at a thickness interval of the substrate to be molded.

The guides 6 and 7 may be rods having a rectangular cross section, or may be plate members having the same width as the width of the holder 4. Guides 6 and 7
Between the length of the guide plate 14 and the mounting plate 15,
The width interval is smaller than between the inner side surfaces of the guides 6 and 7,
At least, the distance between the side surface of the guide body 6 above the cam surface 8 and the side surface of the guide body 7 below the cam surface 9 is the same or smaller. Furthermore, as shown in the figure,
The length interval of the holder 4 between the guides 6 and 7 is
(And the mounting plate 15).

Then, the guide plate 14 (and the mounting plate 15)
Is in contact with the upper side surface of the guide body 6 and the guide plate 1
Since a space is formed between the other end of the mounting plate 4 (and the mounting plate 15) and the guide body 7 and descends in the vertical direction, even if the holder 4 is positioned below the cam surfaces 8, 9, the guide is provided. The other end of the plate 14 (and the mounting plate 15) does not abut against the side surface below the cam surface 9 of the guide 7.

The present invention is configured as described above. Next, a description will be given of a molding operation of a part. In FIG. 1, a long strip-shaped metal plate 1 which is an original plate to be molded as an electronic component or a mechanical component
6, the metal plate 16 is intermittently sent from the depth side to the near side, but the metal plate 16 is at a position floating above the receiving table 11 without contacting the molding table 10, as shown in FIG. When the molding member 5 passes through the cam surfaces 8 and 9 on both sides and descends in the vertical direction, the molding tool 3 pushes down the metal plate 16 and bends above the single component connected to the metal plate 16. The base of the projecting piece 17 is pushed into between the cradle 11 and
As shown in (1), the projecting piece 17 is pushed into the molding space 13 by the instantaneous downward pressure of the molding member 5 at that time, and is inclined inward.

In this state, the molding member 5 and the substrate 16 are simultaneously pulled upward, the metal plate 16 is stopped at a predetermined position, and only the molding member 5 is raised.
As a result, the molding protrusion 12 is pulled out from the bent space of the protruding piece 17, and then the molding member 5 rises in the vertical direction. Never touch. In the next several steps, the protruding piece 17 bent in an inclined manner is pressed to be in a flat state. The bending of the protruding piece 17 is repeated several times depending on the component, but the bending is the same as the above-described molding step.

[0024]

According to the present invention described above, the molding member 5 is formed by integrally connecting the molding tool 3 and the holding tool 4, and the lower portion of the molding tool 3 projecting downward from the holding tool 4. And a molding space 13 is formed inside the molding projection 12 so that the molding member 5 can move up and down along a pair of guides 6 and 7 projecting from the lower mold 2. In addition, the inclined cam surfaces 8 and 9 formed below the guides 6 and 7 enable sliding in one direction while maintaining a horizontal state, and are installed facing the molding table 10 of the lower mold 2. By instantaneously pressing the base of the protruding piece 17 of the unitary component connected to the metal plate 16 between the receiving base 11 and the forming protrusion 12, the protruding piece 17 can be bent obliquely toward the molding space 13.

After the projecting piece 17 is bent inwardly in an inclined manner,
If the metal plate 16 and the molding member 5 are raised and only the molding member 5 is raised at a certain point, the molding member 5 becomes
Since the cam surfaces 8 and 9 slide in an inclined manner in a direction away from the inclined protruding piece 17 and rise in the vertical direction, the molding projection 12 does not touch the inclined protruding piece 17, and therefore, The projecting piece 17 is sent to the next step while maintaining the inclined state.

In the present invention, a single molding member 5 comprising a molding tool 3 and a holding tool 4 is moved up and down along guide members 6 and 7 on both sides, and an inclined cam formed on the guide members 6 and 7 is formed. Since the molding member 5 can be slid in the inclined direction along the surfaces 8 and 9, the upper mold 1 can be rotated 1200 to 1600 times in comparison with the rotational speed of the upper mold used in the conventional mold. It was possible to mass-produce parts in large quantities.

Since the molded member 5 slides between the guide plate 14 and the mounting plate 15, it may be worn between the two. However, since the number of parts is small, maintenance and inspection are easy, and The exchange can be easily performed, and the economic efficiency of the mold can be improved.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a molding die of the present invention, showing a top dead center position of a molding member.

FIG. 2 is a side view of a main part of the molding die of the present invention, showing a bottom dead center position of a molding member.

FIG. 3 is an enlarged cross-sectional view of a molded member as viewed from the front.

FIG. 4 is a side view showing a vertical movement relationship of a molding member between both guides.

FIG. 5 is a side view of a state in which a molding member is slid between both guides.

FIG. 6 is a side view showing a state in which a tongue piece of a single member formed on a substrate is bent in an inclined shape.

FIG. 7 is a side view showing a state in which a tongue piece of a single member formed on a substrate is secondarily bent in an inclined shape.

FIG. 8 is a perspective view showing an example of a molded product of a conventional electronic component.

[Explanation of symbols]

 Reference Signs List 1 upper mold 2 lower mold 3 molding tool 4 holder 5 molding member 6 guide body 7 guide body 8 inclined cam surface 9 inclined cam surface 10 molding table 11 receiving table 12 molding projection 13 molding space 14 guide plate 15 mounting Plate 16 Substrate 17 Projecting piece

Claims (3)

[Claims] 1. A molding member 5 comprising a molding tool 3 and a holding tool 4 connected to an upper mold 1 is vertically movable along a pair of guides 6 and 7 projecting from a lower mold 2. Molded member 5
Is horizontally slid to one side in an inclined manner, and a molding projection 12 protruding from the lower part of the molding tool 3 by a downward pressure of the molding member 5 in a vertical direction and a receiving stand 11 provided on the lower mold 2.
Characterized in that the projecting piece 17 connected to the metal plate 16 can be bent in an inclined manner between them. 2. A molding member 5 comprising a molding tool 3 and a holding tool 4 connected to an upper mold 1 is vertically movable along a pair of guides 6 and 7 projecting from a lower mold 2. Molded member 5
Is horizontally slid to one side in an inclined manner, and a molding projection 12 protruding from the lower part of the molding tool 3 by a downward pressure of the molding member 5 in a vertical direction and a receiving stand 11 provided on the lower mold 2.
A projecting piece 17 connected to the metal plate 16 can be bent in an inclined manner between the mold and the metal plate 16. 3. A molding projection 12 and a molding space 1 at a lower portion.
3, and a holding tool 4 for holding the shaping tool 3. The shaping member 5 sandwiched between the guide plate 14 and the mounting plate 15 is a pair of shaping members protruding from the lower mold 2. Guides 6, 7
The guide member 6 is guided by the upper die 1 so as to be vertically movable and can be slid horizontally in an inclined direction by inclined cam surfaces 8 and 9 formed on guide members 6 and 7. The projection piece 17 connected to the metal plate 16 between the molding projection 12 and the receiving base 11 provided on the lower mold 2 can be bent obliquely into the molding space 13 of the molding tool 3. Molds for molding electronic parts and mechanical parts.