KR100830702B1 - Dot portion forming apparatus in progressive mold - Google Patents

Abstract

A dot portion forming equipment of a progressive mold is provided to increase durability of the forming die by preventing an abrupt impact from being applied to dot projections of a forming die. A dot portion forming equipment of a progressive mold comprises: a lower mold holder(10) including a lower mold retainer(14) in which a die pocket(16) is formed; an upper mold holder(50) which is installed at an upper side of the lower mold holder and lifted or lowered relatively to the lower mold holder, and which includes an upper mold retainer(54) in a state that a punch(56) is installed in the upper mold retainer; an upper mold die(26) which is installed in the die pocket, and which has dot projections formed on a top face thereof to form a product; and a lifting die(34) in which a protection through hole is formed to surround an upper end portion of the forming die including the dot projections, and which is elevated relatively to the forming die by up and down movement of the punch, wherein a dot portion is formed by the forming die and the punch by lowering the lifting die and the punch in a state that a matrix for forming the product is held by the lifting die and the punch.

Description

Dot portion forming apparatus in progressive mold

1 is a perspective view showing the shape of a general terminal having a dot portion.

Figure 2 is a schematic cross-sectional view showing a preferred embodiment of the dot portion forming apparatus of the progressive mold according to the present invention.

Figure 3 is a plan view showing a configuration installed in the die pocket of the lower mold retainer in the embodiment of the present invention.

4 is a front view of the configuration of FIG. 3 seen in the direction of arrow A. FIG.

5a to 5c is a front view, a plan view and a side view showing the configuration of the dot die constituting an embodiment of the present invention.

6 is an operational state diagram showing a state in which the embodiment of the present invention is operated.

* Explanation of symbols for the main parts of the drawings *

 10: Lower holder 12: Backing plate

14: Lower retainer 16: Die pocket

18: case 20: die seat

22: pin hole 24: step groove

26: molding die 28: dot projection

30: reinforcement part 32: hanger jaw

34: Lifting die 36: Protection through

38: hanger end 40: support pin

42: head 44: elastic member

46: fixed stripper 50: upper holder

52: backing plate 54: upper retainer

56: punch

The present invention relates to a progressive mold, and more particularly, to a dot mold forming apparatus of a progressive mold for molding a dot portion made by tearing a part of a product.

In the progressive mold, the punch is hitting the base metal seated on the die while the upper mold holder side with the punch moves up and down with respect to the lower mold holder side with the die to make a product of a desired shape.

1 shows the configuration of a terminal made from a progressive mold. According to the drawing, the terminal 1 is produced by punching and bending a strip-shaped metal plate, and the front end of the body portion 3 is provided with a coupling portion 5 for coupling with a mating terminal, the body portion ( The rear end of 3) is provided with a barrel portion 7 for coupling with the wire.

The barrel portion 7 may be formed with a dot portion 9 for double bonding with the wire. The dot portion 9 is made by tearing and bending a part of the barrel portion 7, and refers to a portion having a relatively small dimension.

In order to form the dot portion 9, a relatively fine structure must be formed in the die and the punch. However, such a fine structure has a problem that can be easily broken by the impact force of the die and punch impact. In particular, when the impact force that the die collides with the punch suddenly acts on the fine structure, the fine structure of the die or punch is easily broken and the durability of the die or punch is inferior.

Accordingly, an object of the present invention is to solve the conventional problems as described above, and to prevent a sudden impact force on the punch and the die for forming the dot portion having a fine structure.

According to a feature of the present invention for achieving the object as described above, the present invention is a lower die holder is provided with a lower die retainer is formed with a die pocket, and is provided above the lower die holder and relatively lifting and punching relative to the lower die holder The upper die holder is provided with an upper retainer is installed, and the protection die surrounding the upper end including the forming die, which is installed inside the die pocket and provided with a top projection for molding the product, and the dot projection of the forming die. And a lifting die formed with a hole and relatively lifted relative to the forming die by lifting and lowering the punch, wherein the lifting die and the punch are lowered by holding the base material for molding the product. The dot portion is formed.

The lifting die is installed through the lower mold holder and supported by a support pin protruding in the punch direction by the elastic member.

Inside the die pocket is provided with a pin through hole through which the support pin penetrates, and a die mounting portion on which the molding die is seated is formed long and vertically, and a case having a step recess groove on which the lifting die is seated is installed on an upper surface thereof.

Both ends of the lifting die are provided with hook ends that are selectively hooked to a fixed stripper installed on the lower retainer.

A dot protrusion is formed at an upper end of the forming die so as to be positioned in a protective through hole of the lifting die which rises to the uppermost portion, and a recess is formed at the punch to engage with the dot protrusion.

A reinforcing part is formed on the molding die in an up and down length, and a lower end of the molding die is further provided with a hanger hooked to the case.

According to the present invention having such a configuration, the lifting die surrounds the dot protrusion of the molding die, and the base material is processed by the bolt protrusion of the molding die while the lifting die descends like the base material with the lowering of the punch. Therefore, it is possible to prevent sudden impact force from being applied to the dot projections of the molding die, thereby increasing the durability of the molding die.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, a preferred embodiment of a dot float forming apparatus of a progressive mold according to the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a schematic cross-sectional view showing a preferred embodiment of the dot molding apparatus of the progressive mold according to the present invention, Figure 3 is a plan view showing a configuration installed in the die pocket of the lower mold retainer in the embodiment of the present invention 4 is a front view showing the configuration of FIG. 3 in the direction of arrow A, and FIGS. 5A to 5C are front, plan and side views of the configuration of the dot die constituting the embodiment of the present invention.

As shown in these figures, the backing plate 12 and the lower mold retainer 14 are mounted on the lower mold holder 10. 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 lower mold retainer 14 is formed with a die pocket 16. The die pocket 16 penetrates the lower mold retainer 14 up and down in this embodiment. Accordingly, the backing plate 12 forms the bottom surface of the die pocket 16.

The die pocket 16 is provided with a case 18. The case 18 allows the forming die 26 and the lifting die 34 to be described below to be installed in the die pocket 16. The die mounting portion 20 is formed to extend vertically along one side of the case 18. The die mounting portion 20 is mounted with a molding die 26 to be described below.

A pin through hole 22 is formed by penetrating both ends of the case 18 up and down. The pin hole 22 is a portion in which the support pin 40 to be described below is lifted. The step groove 24 is formed on the upper surface of the case 18. The step recess 24 is a portion formed so that a portion of the upper surface of the case 18 is relatively recessed. The step-down groove 24 is mounted to the lifting die 34 to be lifted to be described below. For reference, the pin through hole 22 is formed such that approximately half of the stepped groove 24 is positioned.

Molding die 26 is well illustrated in FIGS. 5A-5C. The molding die 26 has a substantially rectangular pillar shape and is seated on the die seating portion 20 of the case 18. Dot projections 28 are formed on both sides of the upper surface of the molding die 26. The dot projection 28 is formed to have a relatively high height toward both ends of the upper surface of the forming die 26, and lower toward the center of the upper surface of the forming die 26. The upper surface of the molding die 26 is the same height as the upper surface of the case 18, the dot projection 28 is formed to protrude on the upper surface of the molding die 26.

The molding die 26 has a reinforcing portion 30 formed to extend vertically along one surface thereof. The reinforcement part 30 serves to reinforce the strength of the molding die 26. Hanging jaw 32 is formed on one side lower portion of the forming die 26. The hooking jaw 32 is engaged with one side of the case 18 to prevent the forming die 26 from moving upward with respect to the case 18.

Lifting die 34 is seated in the step groove 24 of the upper surface of the case (18). The lifting die 34 is configured to be pushed down by the punch 56 to be described below. The lifting die 34 has a protective through hole 36 is formed at one edge thereof. The protective through hole 36 serves to protect the upper end of the forming die 26. An upper end portion of the forming die 26 including the dot protrusion 28 is located inside the protective hole 36. Of course, when the lifting die 34 is relatively raised, the upper end of the forming die 26 is located inside the protective hole 36.

Hook ends 38 are formed at both ends of an upper surface of the lifting die 34. The hook end 38 is a portion that is selectively hooked to the fixed stripper 46 to be described below. A portion corresponding to the bottom surface of the hook end 38 covers the pin through hole 22 formed in the step groove 24 of the case 18.

The lifting die 34 is supported by a support pin 40 penetrating the pin through hole 22 of the case 18. The support pin 40 is installed through the through holes 10 'and 12' formed in the lower mold holder 10 and the backing plate 12. The lower end of the support pin 40 is provided with a head 42. The head 42 is relatively larger in diameter than other portions of the support pin 40. The head 42 is hooked on the lower surface of the lower retainer 14 can be regulated its movement. The support pin 40 is supported by the elastic member 44 inside the through parts 10 'and 12' and pushes the lifting die 34 in the upward direction.

The fixing stripper 46 is installed on the upper surface of the lower mold retainer 14. The fixed stripper 46 guides the movement of the base material for forming the product, and serves to prevent the base material from rising together with the rise of the punch 56 after processing by the punch 56. In the present invention, the fixed stripper 46 also serves to regulate the degree of lifting of the lifting die 34.

A backing plate 52 and an upper retainer 54 are provided on the lower surface of the upper holder 50. The upper holder 50 is lifted by a separate device. The backing plate 52 and the upper retainer 54 are mounted together on the upper holder 50. In fact, the backing plate 52 may be regarded as part of the upper retainer 54.

The upper retainer 54 is provided with a punch 56. The punch 56 cooperates with the forming die 26 to form the dot portion 9. The punch 56 is installed at a position corresponding to the forming die 26 and is raised and lowered with the upper and lower holder 50. A recess (not shown) is formed in a lower surface of the punch 56 at a position corresponding to the dot protrusion 28 of the forming die 26. It is preferable that the groove is shaped to be joined with the dot protrusion 28.

Hereinafter, the operation of the dot portion forming apparatus of the progressive mold according to the present invention having the above configuration will be described in detail.

First, in the state of FIG. 2 in which the upper holder 50 is relatively elevated upwards, the base metal is moved. In the state of FIG. 2, the lifting die 34 is raised upward by the elastic force of the elastic member 44. That is, the hook end 38 of the lifting die 34 is in a state of being engaged with the fixed stripper 46.

The base material is seated on the upper surface of the lifting die 34. At this time, the forming die 26 is the upper end is located in the protective through hole 36 of the lifting die 34, the dot projection 28 also does not protrude to the upper surface of the lifting die (34).

In this state, when the upper holder 50 is lowered, the punch 56 is also lowered. The punch 56 descends and first contacts the base material on the lifting die 34. Therefore, the base material is lowered with the lifting die 34 while being in close contact with the upper surface of the lifting die 34. At this time, the lifting die 34 is moved downward while overcoming the elastic force of the elastic member 44.

Here, the base material is moved downward in close contact between the lifting die 34 and the punch 56, and when the lifting die 34 is lowered, the forming die through the protective hole 36 26) will rise relatively.

Therefore, the base material is gripped by the lifting die 34 and the punch 56 and lowered, while a part of the base protrusion of the molding die 26 is torn while the dot protrusion of the molding die 26 is broken. The grooves 28 and the corresponding recesses of the punch 56 are molded into the shape of the dot portion 9.

After the dot portion 9 is formed by the lowering of the punch 56 as described above, the upper holder 50 rises upward again. The punch 56 is also raised upward by the rise of the upper holder 50. When the punch 56 is raised, the lifting die 34 is no longer pressed by the punch 56. It is raised by the elastic force of the elastic member 44. This lifting of the lifting die 34 raises the base material together. That is, while the base material is molded by the molding die 26 may be sandwiched in the dot projection 28, the lifting die 34 pushes up the base material so that the base material is separated from the molding die 26. .

The lifting die 34 is raised until the hook end 38 is engaged with the stationary stripper 46. That is, it will be in the state of FIG. In this state, the transfer of the base material is made, and the process described above is repeated again.

The scope of the present invention is not limited to the embodiments described above, but is 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 dot molding apparatus of the progressive mold according to the present invention as described in detail above, the following effects can be expected.

In the present invention, the forming die and the punch is lowered by relatively lifting the lifting die relative to the forming die in a state where the upper end of the forming die for forming the product is located in the protective through hole of the lifting die in close contact with the base material by the punch. Molding of the base material is made in between. As such, the lifting die is wrapped and protected by the lifting die, and the lifting die and the punch hold the base material and descend to move relative to the molding die, so that the molding of the base material is performed. This can be prevented from being applied, thereby increasing the durability of the molding die.

Claims (6)

A lower mold holder having a lower mold retainer having a die pocket formed therein; An upper mold holder provided above the lower mold holder and having an upper mold retainer which is relatively lifted relative to the lower mold holder and provided with a punch; A molding die installed inside the die pocket and provided with a dot protrusion for forming a product on an upper surface thereof; A protective through hole is formed surrounding the upper end including the dot protrusion of the molding die, and is configured to include a lifting die relatively lifted relative to the molding die by lifting the punch. The lifting die and the punch is a lower portion holding the base material for forming the product, the dot portion forming apparatus of the progressive mold, characterized in that the dot portion is formed by the forming die and the punch. 2. The apparatus of claim 1, wherein the lifting die is installed through the lower mold holder and supported by a support pin protruding in the punch direction by an elastic member. The case of claim 2, wherein the die pocket has a pin through hole through which the support pin penetrates, and a die mounting portion on which the molding die is seated is formed up and down, and a step recess is formed on the upper surface of the die pocket. The dot portion forming apparatus of the progressive mold, characterized in that the installation. 4. The apparatus of claim 3, wherein hook ends are formed on both ends of the lifting die to be selectively engaged with a fixed stripper installed in the lower mold retainer. [5] The method of any one of claims 1 to 4, wherein a dot protrusion is formed at an upper end of the forming die so as to be located in a protective hole of the lifting die which rises to the uppermost portion, and the punch is formed with a recess formed in the dot protrusion. Dot part forming apparatus of progressive mold. The apparatus of claim 5, wherein a reinforcing part is formed on the molding die in a vertical direction, and a hanger that is hooked to the case is further formed at a lower end of the molding die.

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