JP2960499B2 - Die equipment for punch press - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a punch press die device used for a punch press such as a turret punch press.

(Prior Art) A process for forming a projecting piece a into an L-shaped cross section as shown in FIG. 3B by bending a projecting piece a of a plate material W as shown in FIG. 3A. Will be described.

First, a substantially U-shaped slit b is punched out of the plate material W by appropriately operating a punch press. Next, the plate material W is carried out of the punch press and carried into the bending machine.
Then, by appropriately operating the bending machine, the protruding piece a surrounded by three sides by the slit b is bent, and FIG. 3 (b)
As shown in the figure, the projecting piece a was formed in an L-shaped cross section.

(Problems to be Solved by the Invention) However, in order to form the projecting piece a of the plate material W as described above into an L-shaped cross section as shown in FIG. 3 (b), the plate material W is unloaded from a punch press. In addition, there is a problem that the plate material W has to be carried into the bending machine, which complicates the operation and takes time.

Therefore, an object of the present invention is to provide a die apparatus for punch press that can solve the above problems.

(Means for Solving the Problems) In view of the above-described problems, the present invention provides a punch press mold apparatus including an upper mold and a lower mold, wherein the lower mold has a lower molding mold. A work ejector is vertically movably provided on a lower molding die holder provided to protrude upward and is urged upward, and the lower mold is formed at one end of an elongated entry hole formed in the work ejector. When the upper mold is lowered with respect to the upper molding mold holder and enters the entrance hole, the upper mold moves along the first molding portion provided in the lower molding mold. A first punch body for bending the projecting piece of the work downward in the upper mold holder so as to be movable up and down, and sandwiching the work between the upper mold die and the work ejector so as to resist urging force; When you lower the ejector A second punch body for bending the protruding piece upward along a second forming portion provided in the lower forming die, the upper forming metal being close to the first punch body; This is a configuration in which the mold holder is vertically movable.

(Example) Hereinafter, an example according to an example of the present invention will be described with reference to the drawings.

Referring to FIG. 4, a turret punch press 1 as an example of a punch press is configured such that posts 5, 7 are integrally erected before and after a lower frame 3 (left and right in FIG. 4). Is provided with an upper frame 9 to form a frame.

A disk-shaped upper turret 11 is rotatably provided on the upper frame 9 via a rotating shaft 13.
A lower turret 15 vertically facing the upper turret 11 is rotatably provided via a rotary shaft 17. The upper and lower turrets 11, 15 are synchronously rotated by a predetermined angle in the same direction by appropriately operating a turret rotating device (not shown) such as a servomotor.

The upper and lower turrets 11 and 15 are provided with a number of mold stations (not shown), and a plurality of predetermined mold stations include a plurality of upper molds 19 having various dimensions and shapes for punching, a lower mold 19 and a lower mold. A mold 21 is detachably mounted, and a pair of upper and lower upper and lower molds 19 and 21 have the same dimensions and shape. A striker 23 that can move up and down is provided near the center of the upper frame 9. The striker 23 moves up and down by the action of a hydraulic cylinder (not shown), and is adjustable in position back and forth via a hydraulic cylinder (not shown).

A fixed table for supporting the plate material W is provided on the upper surface of the lower frame 3, and movable tables 27 for supporting the plate material W are provided on both sides of the fixed table (front and back in FIG. 4). It is provided. The movable table 27 is movable in the front-rear direction via a rail 29 attached to the lower frame 3.

Movement positioning device for performing movement positioning of plate material W
31 are provided. More specifically, a carriage base 33 constituting a part of the movement positioning device 31 is provided integrally with the movable table 27, and the carriage base 33 has a carriage 37 provided with a clamp device 35 for gripping the plate material W. Is mounted to be movable in the left and right directions.

According to the above configuration, after the plate material W is gripped by the clamp device 35, the movable table 27 is moved in the front-rear direction, and the carriage 37 is moved in the left-right direction.
The plate material W is moved and positioned at a predetermined position between the upper turret 11 and the lower turret 15. The upper turret 11 and the lower turret 15 are rotated via the turret rotation device before or almost at the same time when the plate material W is moved and positioned, and the upper die 19 and the lower die 21 for predetermined punching are moved. It is located at one position vertically below the striker 23.

Then, by lowering the striker 23 and pressing a predetermined upper die 19 for punching, punching and lowering of the plate material W can be performed. By performing the punching-down operation, the plate material W is substantially U-shaped as shown in FIG.
It is possible to form a slit b in the shape of a letter.

After a substantially U-shaped slit is formed in the plate material W as described above, the protruding piece a surrounded by the slit b on three sides is formed.
The first bent portion a ₁ and portionwise bending allowed to the second bend a ₂ twice, the protruding piece a as shown in FIG. 3 (b) cross-section L of
A molding die device 39 as shown in FIG. 1 is provided in order to form the shape.

The molding die device 39 includes an upper die mounted on the upper turret 11 and a lower die mounted on the lower turret 15.

The details of the molding die device 39 will be described. An upper molding die holder is provided in a mounting hole 41 provided in the upper turret 11.
43 is provided with, in the upper molding die holder 43, the first upper forming die to bend the first bending portion a ₁ of the projecting piece a 45
When the second upper forming die 47 for bending a second bend a ₂ projected piece a is provided.

The first upper molding die 45 includes a punch guide 49 movable vertically with respect to the upper molding die holder 43, a punch body 51 movable vertically with respect to the punch guide 49, and an upper part of the punch body 51. And a spring seat 5 on the lower side of the punch head 53 and the upper side of the punch guide 49.
And a stripper spring 59 provided between them.

The upper mold holder 43 is provided with a return spring (not shown) for urging the punch guide 49 upward. The second upper molding die 47 includes a punch body 61 movable vertically with respect to the upper molding die holder 43, a punch head 63 fixed to an upper portion of the punch body 61, and a And a return spring 65 for urging in the direction.

A lower molding die holder 69 is mounted in a mounting hole 67 provided in the lower turret 15, and a lower molding die 71 is provided in the lower molding die holder 69 so as to protrude upward. The lower molding die 71 cooperates with the first upper molding die 45 to form the first molding die 45.
A first mold portion 71a for bending the bending portion a _1, a second
And a second forming portion 71b for bending a top molding die 47 in cooperation with the second bend a ₂ in opposite side.

The work ejector 73 is attached to the lower mold holder 69.
Are vertically movable via guide bolts 75, and the lower side of the work ejector 73 and the concave portions of the lower mold holder 69
An elastic body 77 such as a spring is provided in the music piece 69a.

When bending a second bend a _2, penetration holes 79 for the first bent portion a ₁ is intrusion, is provided on one side of the lower molding die 71 in the workpiece ejector 73. The dimensions of the penetration hole 79, the length of the first bent portion a _1, the first bent portion a ₁ is entering hole
It is larger than the sum of the moving lengths of the protruding pieces a under the state of intruding into 79.

With the above configuration, an operation that allowed to bending is divided into first bend a ₁ and the second bent section a ₂ twice projected piece a surrounded on three sides by slits b, will be described with reference to Figure 2.

First, as shown in FIG. 2 (a), the protruding piece a is firstly bent between the first upper forming die 45 and the lower forming die 71.
a Position it at the specified position for the length of ₁ . At this time,
Although not shown, the striker 23 is positioned vertically above the first upper molding die 45. Under this state, the pressure punch a first upper forming die 45 lowers the striker 23, the first bent portion a ₁ of the projecting piece a as shown in FIG. 2 (b), the lower forming Mold 71 first
Along the forming portion 71a of the second member, and is bent substantially at a right angle downward, and enters into the entry hole 79.

Next, as shown in FIG. 2 (c), under the state where the first bent portion a ₁ is entered the penetration hole 79 to move the protruding piece a, the second upper molding die 47 and the lower the second bent portion at a predetermined position corresponding to the length of the second bent portion a ₂ between the molding die 71 a ₂
Move and position. The striker 23 is positioned vertically below the second upper molding die 47. Then, the striker 23 is lowered and the second upper molding die 47 is lowered.
By pressing the, the second as shown in FIG.
The bend a ₂ by brought substantially right angle bending, a protruding piece a can allowed to form a L-shaped cross section.

According to the present embodiment, the work of forming the slit b in the plate material W and forming the protruding piece a surrounded by the slit b on three sides into an L-shaped cross section can be performed only by the turret punch press 1. The above work does not require any trouble, and the work efficiency can be improved.

It should be noted that the present invention is not limited to the description of the embodiment as described above, and can be implemented in various other modes by making appropriate changes.

[Effects of the Invention] As can be understood from the above description of the embodiments, in the present invention, in a punch press die apparatus including an upper die and a lower die, the upper die is a lower die. In the second step, the tip of the projecting piece a of the work W is bent downward along the first forming portion 71a provided in the lower forming mold 71 provided in the lower forming mold holder 69 so as to protrude upward. 1 and the projecting piece a of the workpiece W is attached to the lower molding die 71.
And a second punch body 61 for bending upward along the second forming portion 71b provided in the upper forming die holder 43 adjacent to the upper die holder 43 so as to be vertically movable. In punch presses such as presses,
The projecting piece a of the work W can be continuously bent into an inverted L-shape.

[Brief description of the drawings]

The drawings illustrate an embodiment according to the present invention.
FIG. 1 is a view showing a molding die apparatus which is a main part of this embodiment. 2 (a), (b), (c) and (d) are diagrams for explaining the operation of the present embodiment. FIG. 3A is a diagram in which a slit is formed in a plate material. FIG. 3 (b) is a diagram in which a projecting piece surrounded by slits on three sides is formed in an L-shaped cross section. FIG. 4 is a side view of the turret punch press. 1 Turret punch press 19 Upper die for punching 21 Lower die for punching 23 Striker 43 Upper die holder 45 First upper forming die 47 First die 2 Upper mold 69 ... Lower mold holder 71 Lower mold

Claims (1)

(57) [Claims] 1. A punch press die apparatus comprising an upper die and a lower die, wherein the lower die is a lower forming die (71).
A work ejector (73) is provided on a lower molding die holder (69) having a work ejector (69) projecting upward, and is provided so as to be movable upward and downward.
The lower molding die (71) is inserted into one end of an elongated entry hole (79) formed in 3), and the upper die is
When the workpiece (44) is lowered with respect to the upper molding die holder (43) and enters the entry hole (79), it is moved along the first molding part (71a) provided in the lower molding die (71). A first punch body (51) for bending the protruding piece (a) of W) downward is provided on the upper molding die holder (43) so as to be vertically movable, and is provided between the first punch body (51) and the work ejector (73). When the work ejector (73) is lowered against the urging force by sandwiching the work (W) into the lower mold (71), the projecting piece (71) is provided along the second forming portion (71b) provided in the lower forming die (71). a)
Second punch body (61) for folding the upper part upward
Wherein the upper molding die holder (43) is vertically movable close to the first punch body (51).