JP3259816B2 - Mold device for claw forming in punch press - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a claw forming die apparatus in a punch press, and more particularly to a claw forming metal in a punch press used by being mounted on a punch press such as a turret punch press or a set press. Molding device.

[0002]

2. Description of the Related Art Conventionally, as a die apparatus for a punch press (for example, a turret punch press), there is an example as shown in FIG. That is, reference numeral 70 denotes a rotatable lower mounting plate having a cutout hole 71 in the vertical direction.
A large-diameter fitting hole 72 communicating with the scrap hole 71 is formed in the upper part of the hole. And in this fitting hole 72,
For example, a die 74 having a recess 73 is fitted so as to protrude slightly.

[0005] On the other hand, reference numeral 75 denotes a rotatable upper mounting plate provided with a projection forming punch 76 which can face the die 74 on a vertical line. Thus, the protrusion forming punch 76
Is a guide tube 77 fixedly fitted in a through hole of the upper mounting plate 75, and a lower end 87 side is slidably guided by the guide tube 77, and an upper end protruding from the upper surface of the upper mounting plate 75. A punch body 81 in which a punch head 78 on the side is hit against an impactor 80 against the spring force of a return spring 79
It is composed of

In the turret punch press mold apparatus having the above-described structure, the upper mounting plate 75 descends as indicated by the imaginary line, and then an impact device (not shown) operates.
The impactor 80 is positioned on the plate 74 on the die 74.
, A positioning projection 82 is formed on the lower surface of the plate material W1, but a recess 83 is formed on the upper surface of the plate material W1 opposite to the positioning projection 82.

When the plate material W1 having the positioning projections 82 formed on one side surface and the plate material W2 having the small through holes 84 are joined to each other, first, as shown in FIG. 82 and then FIG.
As shown by 2, at an appropriate place of the plate material W1 and the plate material W2,
The so-called spot welding is performed.

However, when the two plate members W1 and W2 are joined together while using the claw forming die apparatus having the above-described configuration, the outer surface (lower surface) of one W1 of the two plate members W1 and W2 integrally joined together has Since the recess 83 remains in a trace state as before, there has been a problem that the recess 83 needs to be properly filled later by a welding operation and polished flat.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and a first object of the present invention is to provide a plate material having an engaging claw for positioning when forming a frame of an electronic device or the like; Even if the plate is joined to a plate material having a small through hole with which the engaging claw is engaged, welding and polishing work are not necessary to aesthetically treat the surface side of the portion where the engaging claw is formed later. An object of the present invention is to obtain a nail forming die apparatus in a punch press capable of forming a plate material. A second object is to make it possible to simplify the configuration of the punch corresponding to the upper mold, and to easily and surely form the engaging claw on one side of the positioning plate.

[0008]

According to the present invention, there is provided a claw forming die apparatus for a punch press according to the present invention, comprising: an upper mounting plate provided with a punch corresponding to an upper die; And a lower mounting plate 20 having a claw-forming elevating pedestal 19 corresponding to a mold. The claw-forming mold device in a punch press, wherein the claw-forming elevating pedestal 19 is a lower mounting plate as a base plate. A plurality of springs 4 in the recesses 20
7, a lifting / lowering pedestal main body 40 for a cylindrical plate material W which is normally slidably fitted so as to protrude from the upper surface 20a of the lower mounting plate 20; A claw forming body 42 which is pivotally supported via a pin and has a counterbore blade 49, and a lifting / lowering cradle main body 40 so that the engaging claw 51 can be formed on the back surface of the plate W in cooperation with the claw forming body 42. And a claw-forming mold portion 60 fixedly provided in the center hole 43.

In the above configuration, instead of the plurality of springs 47, an elastic body made of a synthetic resin material may be provided in the recess 23 of the lower mounting plate 20.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention shown in the drawings will be described with reference to an NC control command signal.
A case where the present invention is used in a turret punch press in which a plate positioning device, a hitting device, and the like are controlled will be described. Note that the use of the present invention is not limited to the use of a turret punch press, and it can be attached to, for example, a set press.

First, an example of an overall use state of the present invention will be described with reference to FIGS. 1 is a turret punch press. The frame of the turret punch press 1 basically includes a lower frame 2 and an upper frame 3 provided integrally with the lower frame 2. A space 4 is formed between the lower frame 2 and the upper frame 3.

Next, reference numeral 5 denotes a positioning device for positioning the plate material W. The plate material positioning device 5 is disposed on one end side (right side in the figure) of the upper surface of the lower frame 2. Thus, the plate positioning device 5 is provided with a moving table 7 movably provided in the left-right direction (for example, the X-axis) via a rail 6 provided on the upper surface of the lower frame 2, and a rail on the moving table 7. A carriage 8 is provided movably in the front-rear direction (for example, the Y-axis) via a clamp, and a clamp 9 is provided on the carriage 8 and clamps the plate material W in a horizontal state.

Next, reference numeral 11 denotes a hitting device provided at an appropriate position on the upper frame 3, and a plurality of hitting devices 11 are provided in this embodiment. The striking device 11 includes a driving unit 12 built in the upper frame 3 and driven by a driving source such as a hydraulic pressure, a driving motor, and the like, a ram 13 provided on the upper frame 3 so as to move up and down by the driving unit 12, And an impactor 14 provided on the ram 13 and hitting the punch 17 of the claw forming die apparatus 16 of the present invention described below.

Thus, the claw forming mold device 16 of the present invention is provided.
Is disposed, for example, in the space 4 of the turret punch press 1. The configuration of the claw forming mold device 16 is referred to as 2 for convenience.
When divided into two parts, a rotatable upper mounting plate 18 provided with a punch 17 corresponding to an upper mold, and a rotation provided with a claw forming elevating pedestal 19 opposed to the upper mounting plate 18 and corresponding to a lower mold. And a possible lower mounting plate 20.

The upper mounting plate 18 is formed in a disk shape, and rotates in a horizontal state via an upper rotation shaft 21 which is rotated by a driving source (not shown). On the other hand, the lower mounting plate 20 serves as a base plate for the claw forming elevating pedestal 19, and the lower drive shaft 2 rotated by a drive source (not shown).
2 to rotate in a horizontal state. These upper pivots 2
1 and the lower drive shaft 22 are separate bodies, but are configured to rotate in the same direction in synchronization.

The punch 17 as an upper mold, which is one of the main parts of the present invention, will be described first. The punch 17 is provided on the upper mounting plate 18 as described above.

Reference numeral 25 denotes a guide cylinder which fits in the through hole of the upper mounting plate 18 in the vertical direction. This guide tube 2
5 is fixedly provided on the upper mounting plate 18. A stopper flange 25a projecting from the upper surface 18a of the upper mounting plate 18 is formed at the upper end of the guide cylinder 25, but a flange or the like is not formed at the lower end thereof.
It is substantially flush with the lower surface 18b of the upper mounting plate 18.

Next, reference numeral 26 denotes a flange portion 25 of the guide cylinder 25.
3A is a retainer collar fixedly provided on the upper surface of FIG. On the other hand, reference numeral 27 denotes a cylindrical punch head provided above and opposed to the retainer collar 26 and hit by the impactor 14 of the impact device 11 described above. The punch head 27 has a female thread 28 in the axial direction.

Next, a lower end portion 30 is slidably fitted in the guide tube 25 and an upper end portion is a male screw portion 32.
The punch body is screwed into the female thread portion 28 of the punch head 27 through the hole. Therefore, the punch body 30
And the punch head 27 are integrated. This punch body 3
0 is urged upward by a return spring 33 wound between the punch head 27 and the retainer collar 26, and as shown in FIG.
Has the same horizontal plane as the lower surface 18a of the upper mounting plate 18.

Next, a claw-forming elevating pedestal 19 as a lower mold, which is another main part of the present invention, will be described. As described above, the claw forming elevating pedestal 19 is provided with the lower mounting plate 20.
It is provided in.

The lower mounting plate 20 will now be briefly described. As shown in FIG. 3, reference numeral 23 denotes a polygonal (square in this embodiment) recess formed on the upper surface of the lower mounting plate 20. In the present embodiment, a total of four spring support holes 24 are formed on the bottom surface 23a of the 23 at a required interval.

Thus, the claw forming elevating pedestal 19 has a rectangular cylindrical elevating pedestal main body 40 slidably fitted in the square recess 23, and a horizontal shaft 41 in the elevating pedestal main body 40. A plate-shaped claw forming body 42 pivotally supported so as to rotate within a predetermined range, and a lifting and lowering support so that the engaging claw 51 can be formed on the plate material W together with the claw forming body 42. Protruding claw forming mold part 60 fixedly provided on the base body 40
Consisting of

The elevating cradle main body 40 has an inner peripheral surface 44 forming a square center hole 43 and an outer peripheral surface 45 slidingly contacting the recess 23.
Is square. Of course, the elevating cradle main body 40 may be formed in a donut shape as a whole, but in this case, it is desirable to devise so that the elevating cradle main body 40 does not move in the circumferential direction in the recess 23.

The upper surface 40a and the lower surface 40b of the elevating cradle main body 40 are flat, and a plurality of spring locking holes 46 corresponding to the spring support holes 24 on the recess 23 side are formed in the lower surface 40b. . A spring 47 for supporting the elevating cradle main body 40 is fitted in the spring engagement hole 46 and the spring support hole 24 in the vertical direction.

On the other hand, the claw forming body 42 has an appearance like a bold letter "b" as a whole, and the right side of the upper end portion of the crest shape is notched in a right angle direction.
8 has a counterbore blade 49 having In addition, the nail forming body 4
The lower end surface 42a of 2 is a flat surface connected to the right-side arc-shaped surface.

[0026] Thus, the claw forming body 42 is supported on the horizontal axis 41 so that the unbalanced signals down scan, becomes tilted state at ordinary normal as shown in Figure 2, a counterbore edge 49 of the upper portion
Does not protrude from the upper surface 40a of the elevating cradle main body 40, but the lower left end (one lower end) 50 is the elevating cradle main body 40.
Protruding from the lower surface 40b.

Further, the projection-shaped claw forming mold part 60 is
It is fixedly provided in the center hole 43 of the elevating cradle main body 40 so as to form the engaging claw 51 on the back surface of the plate material W together with the claw forming body 42, or is formed integrally,
The upper surface is a flat surface that can contact the back surface of the plate material W, and is flush with the upper surface 40 a of the elevating cradle main body 40. The claw forming mold portion 60 is provided with an inclined surface 60b that extends obliquely from the upper surface with respect to the vertical surface 48 of the counterbore blade 49 of the claw forming body 42. In the present embodiment, a contact surface 60c that contacts the vertical surface 48 of the spot facing blade 49 is formed below the inclined surface 60b in the claw forming mold portion 60.

In the above structure, the plate material W is first positioned by the plate material positioning device 5 as shown in FIG.
Also, the upper and lower mounting plates 18 of the claw forming mold device 16,
20 rotates synchronously via upper and lower rotation shafts 21 and 22. When the positioning of the plate material W is performed by the positioning device 5, the punch 17 on the upper mounting plate 18 and the claw forming elevating pedestal 19 on the lower mounting plate 20 coincide with a vertical line as shown in FIG. At this time, the plate member W is horizontally supported by the lifting cradle main body 40 slightly floating from the upper surface 20a of the lower mounting plate 20 by the spring 47. The nail forming body 42
Is in the inclined state as described above, and the counterbore blade 49 at the upper end is immersed below the upper surface 40a of the elevating cradle main body 40.
On the other hand, the lower left end 50 is the lower surface 40 b of
Projecting from. Therefore, the claw forming body 42 is
It looks like it is hanging down to 1 in a tilted state.

Next, when the upper mounting plate 18 is further lowered as shown in FIG. 4 by an NC control command signal from a control device (not shown), the wide lower end surface 34 of the punch body 30 comes into contact with the upper surface of the plate material W. At this time, a required space remains between the lower surface 18a of the upper mounting plate 18 and the upper surface 20a of the lower mounting plate 20. Also at this stage, the claw forming body 42 remains in a tilted state, and the lower left end 50 protrudes from the lower surface 40 b of the elevating cradle main body 40.

Then, when the driving means 12 of the striking device 11 is driven and the impactor 14 strikes the punch head 27 of the punch 17 as shown in FIG.
It falls instantaneously against the spring force of the return spring 33. Then, the elevating cradle main body 40 is guided by the inner surface of the recess 23 and descends against the spring force of the spring 47, and its lower end surface 40.
b contacts the bottom surface 23a of the lower mounting plate 20. At this time, as shown in FIG. 6, the claw forming body 42 in which the lower left end portion 50 contacts the bottom surface 23 a of the recess 23 rotates clockwise about the horizontal axis 41, and the spot facing blade 49 is the lower surface of the plate material W. And a positioning engagement claw 51 is formed on the lower surface of the plate material W in combination with the inclined surface 60b of the claw forming mold portion 60. This engaging claw 51
7 has a mountain shape as shown in FIG. 7 and has a vertical locking surface 51 a corresponding to the vertical surface 48 of the counterbore blade 49 of the claw forming body 42.

As soon as the engaging claws 51 are formed in this way, the punch body 30 of the punch 17 returns upward by the spring force of the return spring 33, after which the upper mounting plate 18 rises to a predetermined position.

[0032]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention capable of forming a positioning engagement claw 51 on a plate W will be described. In the description of the embodiments, the same reference numerals as in the embodiments of the invention are attached to the drawings, or the same reference numerals are assigned.
A duplicate description will be omitted.

Here, the first embodiment described in the embodiment of the present invention will be described with reference to FIGS.

In the first embodiment, an upper mounting plate 18 provided with a punch 17 corresponding to an upper mold, and a rectangular or circular claw forming elevating pedestal 19 facing the punch and corresponding to a lower mold. And a lower mounting plate 20 provided with a claw forming die device in a punch press, wherein the claw forming elevating pedestal 19 has a rectangular or circular recess 23 of the lower mounting plate 20 as a base plate. A plurality of elevating cradle main bodies 40 for a cylindrical plate material W, which are normally slidably fitted so as to protrude from the upper surface 20a of the lower mounting plate 20 via a plurality of springs 47;
A claw forming body 42 pivotally supported via a horizontal shaft 41 in a center hole 43 of the elevating cradle main body 40 and engages with the back surface of the plate W in cooperation with the claw forming body 42. The center hole 4 of the elevating cradle main body 40 is formed so that the claw 51 can be formed.
3 and a projection-shaped claw forming mold portion 60 fixed or integrally provided.

The lower mounting plate 20 and the upper mounting plate 18
Corresponds to the type of punch press, and may be of a rotary type (for example, a turret punch press) or a fixed type (for example, a set press). Therefore, the mounting plate or mounting plate on which the upper and lower dies of the present invention are mounted may be either a rotating plate or a fixed plate.

[0036] Thus, the pawl forming body 42 is supported on the horizontal axis 41 to the power sale by become unbalanced signals down <br/> scan, the ordinary normal becomes reclined counterbore edge 49 of the upper end elevation receives Although it does not project from the upper surface 40a of the base body 40, the lower end 50 on one side
Project from the lower surface 40b of the elevating cradle main body 40.
The upper surface 40a and the lower surface 40b of the elevating cradle main body 40 are flat, and a plurality of spring locking holes 46 corresponding to the spring support holes 24 on the recess 23 side are formed in the lower surface 40b.

In the first embodiment, the claw-forming elevating pedestal 19 is supported by a plurality of resilient members 47 provided in the recesses 23 of the lower mounting plate 20. However, instead of the plurality of elastic members (springs) 47, an elastic body formed of a synthetic resin material may be provided in the recess 23 of the lower mounting plate 20. In this case, the elastic body may be formed in a circular shape when the concave portion 23 is circular, or in a single trapezoidal shape corresponding to the shape when the concave portion 23 is rectangular. As in the case of (2), the number may be plural.

[0038]

As is clear from the above description, the present invention has the following effects. (1) According to the first aspect of the present invention, it is possible to obtain a positioning plate material that does not require welding and polishing for treating the surface of the plate material. That is, in the case where various electronic device frames and the like are formed while joining two plate members, the plate member having the positioning claw formed according to the present invention and the through-hole in which the engagement claw is engaged Even when the plate material having the small holes is joined, no recess is formed on the front side of the portion where the engaging claw of the plate material is formed unlike the conventional case, so the recess on the surface of the plate material is aesthetically treated. No welding or polishing work is required. (2) According to the first aspect of the present invention, the punch corresponding to the upper mold can be made simple. Therefore, assembling is easy and the number of constituent parts is small, so that it can be manufactured at low cost. (3) Further, according to the first aspect of the present invention, it is possible to easily and reliably form the engaging claw on the surface of the positioning plate. (4) According to the second aspect of the present invention, it is possible to reduce the number of components constituting the claw forming elevating pedestal and easily form a desired engaging claw. (5) According to the third aspect of the present invention, the claw forming elevating cradle can be stably supported.

[Brief description of the drawings]

1 to 6 are explanatory views for explaining an embodiment of the present invention. 2 to 6 are explanatory views showing a first embodiment of the present invention.

FIG. 1 is a schematic explanatory view showing an example of an embodiment of the present invention.

FIG. 2 is a schematic explanatory view before the upper mounting plate is lowered in the embodiment of the present invention.

FIG. 3 is an exploded perspective view of a main part.

FIG. 4 is a schematic explanatory diagram in which an upper mounting plate according to the embodiment of the present invention has been lowered halfway;

FIG. 5 is a schematic cross-sectional explanatory view showing a state where the punch body of the punch is lowered in FIG. 4 to form an engagement claw.

FIG. 6 is an enlarged explanatory view of a main part in FIG. 5;

FIG. 7 is a perspective view showing a joining relationship between a plate material having positioning engagement claws and a plate material having through holes obtained by the present invention.

FIG. 8 is an explanatory view of a case where the plate member and the plate member are joined in FIG. 7;

FIG. 9 is a schematic sectional explanatory view taken along line 9-9 in FIG. 8;

FIG. 10 is a schematic explanatory view showing an example of a conventional punch press die apparatus.

FIG. 11 is a perspective view showing a joining relationship between a plate member having positioning projections obtained by a conventional punch press die apparatus and a plate member having through holes.

FIG. 12 is an explanatory view of a case where the plate member and the plate member are joined in FIG. 11;

[Explanation of symbols]

2 lower frame, 3 upper frame, 4 space, 5
... plate material positioning device, W ... plate material, 11 ... hitting device, 14
... Impactor, 16 ... Mold device for claw formation, 17 ... Punch, 1
8 upper mounting plate, 19 claw formation elevating pedestal, 20 lower mounting plate, 23 recess, 23a bottom surface, 24 support hole for spring, 27 punch head, 30 punch body, 31
Lower end portion, 34: Lower end surface, 40: Elevating cradle main body, 40a
... upper surface, 40b ... lower surface, 42 ... claw forming body, 42a ... lower end surface, 43 ... center hole, 46 ... spring locking hole, 48 ... vertical surface,
49: counterbore blade, 50: lower end, 51: engaging claw, 51a
... vertical locking surface, 60 ... claw forming die part, 60b ... inclined surface, 6
0c: contact surface.

Claims (4)

(57) [Claims] An upper mounting plate provided with a punch corresponding to an upper mold, and a lower mounting plate provided with a claw forming elevating pedestal facing the punch and corresponding to a lower mold.
A nail forming die apparatus in a punch press comprising: a claw forming elevating pedestal 19 through a plurality of elastic members 47 in a recess 23 of a lower mounting plate 20 as a base plate; In a normal state, a cylindrical lifting / lowering pedestal main body 40 for the plate material W that slide-fits so as to protrude from the upper surface 20 a of the lower mounting plate 20, and is supported by a horizontal shaft 41 in a center hole 43 of the vertical pedestal main body 40 via a horizontal shaft 41. And a center hole 43 of the elevating cradle main body 40 so that the engaging claw 51 can be formed on the back surface of the plate material W together with the claw forming body 42. And a claw forming mold portion 60 provided in the inside thereof. Wherein at to claim 1, pawl forming body 42 is supported on the horizontal axis 41 to the power sale by become en <br/> balun scan, becomes tilted state at ordinary normal, the seat of the upper end The counterbore blade 49 does not protrude from the upper surface 40a of the elevating cradle main body 40, while the lower end 50 on one side protrudes from the lower surface 40b of the elevating cradle main body 40. apparatus. 3. The claw forming mold part 60 according to claim 1,
The upper surface 60a is a flat surface that can be brought into contact with the back surface of the plate material W.
9 inclined surface 60b directed obliquely to the vertical surface 48
A claw forming die device in a punch press, characterized in that a hole is formed. 4. An upper mounting plate 18 provided with a punch 17 corresponding to an upper die, and a lower mounting plate 20 provided with a claw forming elevating pedestal 19 facing the punch and corresponding to a lower die.
A nail forming die apparatus in a punch press, wherein the claw forming elevating pedestal 19 is provided via an elastic body formed of a synthetic resin material in a recess 23 of a lower mounting plate 20 as a base plate. In the normal state, a cylindrical lifting / lowering pedestal main body 40 for the plate material W which slides and fits so as to protrude from the upper surface 20 a of the lower mounting plate 20, and a shaft is inserted into a central hole 43 of the vertical pedestal main body 40 via a horizontal shaft 41. A claw forming body 42 supported and having a counterbore blade 49, and a center hole of the elevating cradle main body 40 so that the engaging claw 51 can be formed on the back surface of the plate W in cooperation with the claw forming body 42. 43. A nail forming die apparatus in a punch press, comprising: a nail forming mold part 60 provided in the inside of a die 43.