JPH0723059Y2 - Punching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Object of Invention) (Field of Industrial Application) The present invention relates to an improvement of a punching die used in a punching device.

(Prior Art) The punching die in the conventional punching device is the third
As shown in FIGS. 4 and 5, a die 103 is held on a lower turret 101 which is rotatably supported by a body frame of a punching device, and the die 10 is
The work W gripped by the clamp C is placed on the top 3.

An upper turret 105 corresponding to the lower turret 101 is rotatably supported above the lower turret 101 by a body frame of a punching device. The upper turret 105 has a punch structure 10 corresponding to the die 103.
7 is installed.

The punch structure 107 has a cylindrical punch guide 109 whose total weight is cylindrical.
It is supported by a plurality of lift springs 113 by the flange portion 111 and is held in a state of floating on the upper turret 105.

A stripper plate 115 is provided below the punch guide 109. A punch driver 119 having a punch 117 on the lower side is provided in the cylinder of the punch guide 109,
The head 121 of the punch driver 119 and the flange 11
A strip spring 123 is interposed between the strip spring 1 and 1 in a compressed state.

The stripper plate 115 has a stripper hole into which the punch 117 can enter, and the die 103 also has a die hole into which the punch 117 can enter.

With the above configuration, the stripper plate 115 provided at the bottom of the punch guide 109 is moved to the die by hitting the head 121 of the punch driver 119 with a striker (not shown).
While pressing the work W on 103, the punch 117 is guided by the punch guide 109 and descends to enter the stripper hole and the die hole, whereby the work W is punched.

(Problems to be solved by the invention) By the way, at the time of punching, the clamp C cannot be positioned between the die 103 and the stripper plate 115 as shown in FIG. Therefore, for example, when the tooth tip of the punch 117 and the die hole of the die 115 are long-angled, the distance from the die hole to the outer periphery of the die 103 is long, and cutting work in the vicinity of the clamped portion of the work is impossible, There is a problem that the work W is wasted.

An object of the present invention is to provide a punching device capable of eliminating waste of a work by making it possible to perform cutting work even up to a clamped portion of a work gripped by a clamp in order to improve the above problems. To do.

(Structure of the Invention) (Means for Solving the Problem) In order to solve the above-mentioned conventional problems, in the present invention, a vertically movable cylindrical punch guide and a vertically movable punch guide are provided. A punch, a stripper freight provided with a stripper hole into which the punch can enter and provided at the lower portion of the punch guide, and a die having a die hole into which the punch can enter and provided vertically opposed to the punch guide, In a punching device provided with a punching die comprising, a clamp for holding one end of a work is provided on one side of the punching die so as to be movable in a direction approaching and separating from the punching die, A first notch recess is provided on one side of the stripper hole in the lower part of the stripper plate, and one of the die holes in the upper part of the die is provided. When the work is pressed by the cooperation of the stripper plate and the die by providing the second cutout concave portion on one side and lowering the punch guide, this first
The first notch recess and the second notch recess are configured so that the tip of the clamp can be accommodated in the space between the notch recess and the second notch recess.

(Operation) In the above configuration, one end of the work is gripped by the clamp, the clamp is moved in the direction approaching the punching die, and the work is moved and positioned between the stripper plate and the die. Then, the punch guide is lowered and the work is pressed by the stripper plate and the die. Furthermore, lower the punch with respect to the punch guide,
A desired punching process is performed on the work by entering the stripper hole and the die hole.

Under the above action, when the first cutout recess is provided in the lower part of the stripper plate and the second cutout recess is provided in the upper part of the die, and the punch guide is lowered to press the work by the cooperation of the stripper plate and the die. By configuring the first notch recess and the second notch recess so that the tip of the clamp can be accommodated in the space between the first notch recess and the second notch recess, the clamp interferes with the die and the stripper plate. While avoiding the above, it is possible to bring them close to the die hole and the stripper hole. Therefore, one end of the work (in other words, the clamped portion of the work) can be brought as close as possible to the die hole and the stripper hole.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

Referring to FIGS. 1 and 2, a die 3 is held on a lower turret 1 which is rotatably supported by a body frame (not shown) in a punching device, and a clamp C is gripped on the die 3. The worked work W is placed.

An upper turret 5 corresponding to the lower turret 1 is rotatably supported above the lower turret 1 and supported by a body frame of a punching device. A punch structure 7 corresponding to the die 3 is attached to the upper turret 5.

The punch structure 7 is supported by a plurality of lift springs 13 with its entire weight supported by a flange portion 11 of a cylindrical punch guide 9 and floated on the upper turret 5.

A stripper plate 15 is provided below the punch guide 9. In the cylinder of the punch guide 9, punches 17 on the lower side.
There is provided a punch driver 19 including a punch driver 19, and a strip spring 23 is compressed and interposed between a head portion 21 of the punch driver 19 and the flange portion 11.

The stripper plate 15 has a stripper hole through which the punch 17 can enter, and the die 3 has a die hole through which the punch 17 can enter.

With the above configuration, by striking the head 21 of the punch driver 19 with a striker (not shown), the stripper plate 15 provided under the punch guide 9 presses the work W on the die 3 and the punch 17 punches. The work W is punched by being guided by the guide 9 and descending to enter the stripper hole and the die hole.

For example, as shown in FIG. 2, when the tip of the punch 17 has a long-angled shape, the stripper plate 15 and the die 3 correspond to one side of the tip in the lateral direction of the punch 17. A clamp escape portion 25 is formed in the portion. That is, as the clamp escape portion 25, the first cutout recess 29 is formed on one side of the stripper hole in the lower portion of the stripper plate 15.
And a second cutout 27 is formed on one side of the die hole in the upper part of the die 3. Further, when the punch guide 9 is lowered and the work W is pressed by the cooperation of the stripper plate 15 and the die 3, the first notch recess 29 and the second notch recess 29
The first notch recess 29 and the second notch recess 27 are configured so that the tip portion of the clamp C can be accommodated in the space between the notch recesses 27.

In the above structure, one end of the work W is gripped by the clamp C, and the clamp C is held by the punch structure 7 and the die 3.
The work W is moved and positioned between the stripper plate 15 and the die 3 by moving the work W in a direction approaching the. Then, the punch guide 9 is lowered against the biasing force of the lift spring 13 and the work W is pressed by the stripper plate 15 and the die 3. Further, the punch 17 is lowered against the urging force of the strip spring 23 with respect to the punch guide 9 to enter the stripper hole and the die hole, thereby performing a desired punching process on the work W.

Under the above action, the stripper plate 15 is
The notch recess 29 and the second notch recess 27 are provided in the upper part of the die 3, and when the punch guide 9 is lowered to press the work W by the cooperation of the stripper plate 15 and the die 3, the notch recess 29 and the first notch recess 29 are formed. The first notch recess 29 is formed so that the tip of the clamp C can be accommodated in the space between the second notch recesses 27.
Since the second cutout recess 27 is formed, the clamp C
Can be brought close to the die hole and the stripper hole while avoiding interference with the die 3 and the stripper plate 15. Therefore, one end of the work W (in other words, the clamped portion of the work W) can be brought as close as possible to the die hole and the stripper hole.

Therefore, according to the punching device of the present embodiment, the punching process can be performed near one end of the work W (near the clamped part), and the waste of the work W is minimized to effectively use the work. Can be planned.

(Effect of the Invention) As will be understood from the above description of the embodiments, according to the present invention, the first cutout recess is provided on one side of the stripper hole in the lower portion of the stripper plate, and the die above the die is provided. When the second cutout recess is provided on one side of the hole and the punch guide is lowered to press the work by the cooperation of the stripper plate and the die, the first cutout is formed.
By configuring the first notch recess and the second notch recess so that the tip of the clamp can be accommodated in the space between the notch recess and the second notch recess, the clamp avoids interference with the die and the stripper plate. The die hole and the stripper hole can be brought close to each other while being pressed. Therefore,
One end of the work (clamped part) can be brought as close as possible to the die hole and the stripper hole, and punching can be performed near the one end of the work (near the clamped part), thus minimizing the waste of the work. The work can be effectively used by reducing the number.

[Brief description of drawings]

FIG. 1 is a partially sectional front view of a punching die according to an embodiment of the present invention, and FIG. 2 is a II-I in FIG.
Sectional view taken along line I, FIG. 3 is a front view showing a partial section of a conventional punching die, and FIG. 4 is IV-I in FIG.
It is a sectional view taken along line V. 3 ... Die, 9 ... Punch guide 15 ... Stripper plate, 17 ... Punch 25 ... Clamping relief, 27, 29 ... Notch W ... Die, C ... Clamp

Claims (1)

[Scope of utility model registration request] 1. A cylindrical punch guide that can move up and down, a punch that can move up and down on the punch guide, and a stripper plate that has a stripper hole into which the punch can enter and that is provided below the punch guide. A punching die having a die hole into which the punch can be inserted and provided with a die vertically opposed to a punch guide is provided, and one end of a work is gripped on one side of the punching die. In a punching device in which a clamp is provided so as to be movable toward and away from the punching die, a first notch concave portion is provided on one side of the stripper hole in a lower portion of the stripper plate and an upper portion of the die is provided. A second notch recess is provided on one side of the die hole, and the punch guide is lowered to allow the stripper plate and the die to cooperate with each other. When pressing the workpiece, the first
A punching device comprising a first notch recess and a second notch recess so that the tip of the clamp can be accommodated in a space between the notch recess and the second notch recess.