JP2611089B2 - Mold for molding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molding die for a punching machine, and more particularly to a molding die capable of coping with a change in the thickness of a sheet to be processed and a change in a molding height.

[0002]

2. Description of the Related Art In a conventional punch press such as a turret punch press, it is common to use a molding die corresponding to each thickness of a workpiece to be processed and each molding height of the workpiece to be processed. Met.

[0003] For this reason, it has been general to prepare and mold a dedicated molding die for various plate thicknesses and molding heights.

[0004]

However, in such a conventional technique, when the plate thickness and the forming height of the workpiece to be processed change, the forming die and the forming height corresponding to the plate thickness are changed. Therefore, a molding die corresponding to various thicknesses and a molding die for various molding heights are required, and there is a problem in terms of cost.

Further, every time the sheet thickness changes or the molding height changes, the molding die has to be replaced, and the workability is poor.

An object of the present invention is to pay attention to such a conventional technique, and the same shape can be obtained even if the thickness of the work to be processed is changed or the molding height of the work to be processed is changed. The object of the present invention is to provide a molding die which can be molded with the same die.

[0007]

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the present invention provides a die for supporting a plate-like work which is horizontally moved at a predetermined height, and a vertically movable die with respect to the die. Wherein the punch has a horizontal lower surface capable of pressing and fixing the work to a horizontal die plate provided on a die body of the die, and is formed into a part of the work. The die has a substantially vertical regulating surface that regulates a rising portion, and the die has a slide shaft supported vertically movably on a lower side of the die body, and the rising portion is provided on an upper portion of the slide shaft. A die chip capable of projecting upward from the die plate is provided for molding, and the die chip is guided by an inclined surface formed on the die plate when projecting upward, and the die chip Serial with movable regulatory side, those formed by providing a substantially vertical workpiece shaping surface of possible clamping the rising portion of the workpiece between the regulating surface.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following, embodiments will be described. First, for ease of understanding, an overall configuration of a punch press will be described.

FIG. 5 shows a turret punch press 1 as a punch press. The turret punch press 1 has side frames 5 and 7 erected on both sides of a base 3 and an upper frame 9 above the side frames 5 and 7.

Below the upper frame 9, a disc-shaped upper turret 13 in which a plurality of punches 11 as upper dies (here, upper dies for molding) is detachably mounted.
Are rotatably supported by the upper rotation shaft 15. A lower turret 19 to which a plurality of dies 17 serving as a lower mold paired with the punch 11 is detachably mounted above the base 3 so as to face the upper turret 13 so as to be rotatable by a lower rotating shaft 21. Supported. A hydraulic cylinder 25 equipped with a pressing element 23 for pressing the upper mold 11 is provided below the upper frame 9. Further, a press cylinder 27 for pressing a die 17 described later upward is provided at a position of the base 3 facing the pressing element 23 with the piston rod 29 facing upward. Therefore, the upper turret 13 and the lower turret 19 are rotationally controlled in synchronization by a turret servomotor (not shown) provided in the frame, so that a desired pair of the punch 11 and the die 17 is located at a processing position immediately below the presser 23. Positioning control is selectively performed.

Further, at the center of the upper surface of the base 3, fixed tables (not shown) for supporting the plate-shaped work W so as to be horizontally movable at a predetermined height position are provided. A pair of movable tables 31 whose positioning is controlled along the Y direction in the drawing are movably supported. The movable table 31 is integrally provided with a carriage base 33 extending in the front-rear direction (in the direction perpendicular to the plane of FIG. 5) while straddling the fixed table. Further, a carriage 35 movable in the front-rear direction is provided in the carriage base 33. The carriage 35 is provided with a work clamp 37 for holding one end of a plate-shaped work W so as to be movable in the X direction.

Therefore, the work W is positioned between the upper turret 13 and the lower turret 19 by moving the carriage 35 equipped with the work clamp 37 for gripping the work W on the carriage base 33 in the front-rear direction (in FIG. Direction) and the carriage base 33 is controlled to move in the Y direction.

The work W positioned as described above
Is formed by a predetermined punch 11 and die 17 selected by rotating and positioning the upper turret 13 and the lower turret 19.

Next, based on FIG. 1 and FIG.
9 will be described. The molding die 39 includes a punch 11 as an upper die and a die 17 as a lower die. The punch 11 and the die 17 are mounted on upper and lower turrets 13 and 19, respectively. The punch 11 includes the pressing element 2
A bolt 4 is provided below the punch head 41 pressed by
Punch body 49 via 3, 45 and mounting member 47
The lower surface of the punch body 49 is formed horizontally, and a concave portion 51 for forming is formed on the lower surface. The concave portion 51 has a substantially vertical regulating surface for regulating a rising portion formed on the work W. A spring 53 is provided between the mounting member 47 and the upper turret 13, and urges the punch body 49 upward.

The die 17 has a die body 55 mounted on the lower turret 19 via a die holder 57.
The die holder 57 is fixed to the lower turret 1 by a screw 59.
9, and the rotation of the die body 55 is suppressed by the pin 61 stored therein. The die body 55 is provided with a large-diameter recess 63 at the upper portion and a small-diameter recess 65 at the lower portion. A slide shaft (support member) 69 is provided so as to be vertically movable by being guided by the bottom center hole 67 of the small diameter recess 65. A large diameter portion 71 is provided on the upper portion of the slide shaft 69.

Further, a spring collar 75 fixed to a lower end of the slide shaft 69 by a bolt 73,
A spring 77 is provided between the bottom of the die body 55 and the spring 77 to constantly urge the slide shaft 69 downward. Accordingly, the lower limit position is regulated by the large diameter portion 71 of the slide shaft 69 abutting the bottom of the small diameter recess 65 of the die body 55 as shown in FIG.

On the other hand, the large diameter portion 71 of the slide shaft 69
On the upper surface, a T-shaped groove 79 is provided as shown in FIG. A die chip 81 having a bottom engaging with the T-shaped groove 79 is provided so as to be movable left and right in FIG. The left side of the die chip 81 is a substantially vertical work forming surface 83, while the right side is an inclined surface 8.
5 are provided. Further, a die plate 87 capable of supporting the work W at a predetermined height is provided in the large-diameter recess 63 of the die body 55. The die plate 87 is provided with an inner hole 89 through which the die chip 81 can move vertically and horizontally. And the right side of this inner hole 89,
An inclined surface 91 that engages with the inclined surface 85 of the die chip 81 is provided. A die chip ejector 93 is provided in the die plate 87 on the left side of the inner hole 89, and constantly urges the die chip 81 rightward. With the above configuration,
First, as shown in FIG.
As shown in (a), after a part of the work W is cut into a concave shape in advance and the work W having a part to be a rising part is positioned and placed, the piston rod of the hydraulic cylinder 25 is moved. When the pressing element 23 presses the punch head 41 by lowering the pressure, the punch body 49 is lowered against the urging force of the spring 53. Thus, the work W is firmly held in cooperation with the die body 55.

Thereafter, when the piston rod 29 of the press cylinder 27 is extended, the spring collar 75 is pushed up.
1 is pushed up against the urging force of the spring 77.
The die chip 81 presses and raises the portion to be the rising portion of the workpiece W, and the inclined surfaces 85 and 91 slide. As a result, the die chip 81 is biased by the die chip ejector 93 to the left in FIG. Move against. The work forming surface 93 of the die chip 81 presses the rising portion of the work W being formed upward against the left side surface (restriction surface) of the concave portion 51 of the punch body 49 and at a position corresponding to the thickness of the work W. Both the leftward movement and the upward movement of the die chip 81 are stopped, and the forming of the rising portion of the work W is completed as shown in FIG.

Next, in order to return to the state shown in FIG. 2, when the piston rod 29 of the press cylinder 27 is first immersed, the die tip 81 and the slide shaft 69 are lowered by the urging force of the spring 77, and the die tip 81 is also moved to the die tip. By the urging force of the ejector 93, the inclined surface 85,
Move to the right while sliding 91.

Thereafter, when the piston rod of the hydraulic cylinder 25 is retracted, the presser 23 also rises, and the punch body 49 rises by the urging force of the spring 53.
Accordingly, the molding die 39 returns to the state shown in FIG. However, the formed work W remains on the die body 55.

As described above, since the inclined surface 85 slides along the inclined surface 91 of the die plate 87 with the rise of the die chip 81, the die chip 81 moves upward to the left to perform the forming process. Therefore, even if the thickness of the work W to be processed changes, it can be dealt with by changing the moving amount of the die chip 81 to the left side. Further, since there is a margin in the height of the concave portion 51 of the punch body 49, it is possible to cope with a slight change in the molding height.

Accordingly, the work W having various thicknesses and various heights can be formed by one type of molding die 39, and the thickness and the processing height are changed as in the prior art. This also eliminates the need to exchange the punch 11 and the die 17. For this reason, the working efficiency is improved, and the economic effect is great.

The present invention is not limited to the above-described embodiment, but can be implemented in various modes by making appropriate changes. For example, in the above embodiment,
Although the case where it is used for the turret punch 1 has been described,
The present invention is not limited to this and can be applied to various punch presses.

[0024]

As can be understood from the above description of the embodiments, in short, the present invention relates to a die (17) for supporting a plate-like work (W) which is horizontally moved at a predetermined height position, and Punch (11) that can move up and down with respect to die (17)
The punch (11) comprises:
The work (W) has a horizontal lower surface capable of being pressed and fixed to a horizontal die plate (87) provided on a die body (55) of the die (17), and is formed into a part of the work (W). The die (17) includes a slide shaft (69) supported vertically below the die body (55) so as to be able to move up and down. 69)
A die chip (81) projecting upward from the die plate (87) to form the rising portion is formed on the upper part of the die chip.
The die chip (81) is guided by an inclined surface (91) formed on the die plate (87) when projecting upward, and is movable toward the regulating surface side of the punch (11). A substantially vertical work forming surface (83) capable of holding a rising portion of the work (W) is provided between the control surface and the regulating surface.

As is apparent from the above configuration, the molding die according to the present invention comprises a die 17 for supporting a plate-like work W which is horizontally moved at a predetermined height and a punch 1 which can move up and down.
1. The punch 11 has a horizontal lower surface for pressing and fixing the work W to the die plate 87 of the die 17;
This is a configuration having a substantially vertical regulating surface for regulating a rising portion formed on the work W.

The die body 55 of the die 17
Slide shaft 69 movably supported in the lower part of the
The die chip 81 provided on the upper part of the die plate 8
7 can be projected upward, and when projected upward, can be guided by the inclined surface 91 of the die plate 87 and move toward the regulating surface side of the punch 11, and between the regulating surface and the punch 11. Since the die chip 81 is provided with a substantially vertical work forming surface 83 capable of holding a rising portion formed on the work W, the work W does not move up and down when forming the rising portion on the work W. It is always held horizontally at a constant height position, and there is no problem even when the rising portions are formed at a plurality of positions of the work W.

When the rising portion is formed, the die chip 81 moves toward the regulating surface of the punch 11 and the rising portion is sandwiched between the regulating surface and the work forming surface 83 of the die chip 81. In addition, it is not necessary to adjust the clearance between the regulating surface and the work forming surface 83 with respect to the change in the thickness of the work W, and it is possible to easily cope with the change in the thickness of the work W.

Therefore, it is not necessary to replace the molding die each time the plate thickness and the molding height of the rising portion change as in the conventional case.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing the entirety of a molding die according to the present invention and at the time of completion of molding.

FIG. 2 is a cross-sectional view showing a state where a punch is raised and a die chip and a support member are lowered in the molding die shown in FIG. 1;

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4A is a plan view of a workpiece cut into a concave shape, and FIG.
The figure is a side view showing the formed part bent from the work.

FIG. 5 is an explanatory view showing the entire turret punch press using the molding die according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turret punch press 11 Punch 17 Die 39 Molding die 51 Concave part (molding part) 55 Die body 69 Slide shaft (support member) 81 Die tip 85 Inclined surface 91 Inclined surface W Work

Claims (1)

(57) [Claims] 1. A die (17) for supporting a plate-like work (W) which is horizontally moved at a predetermined height position, and the die (1).
7) A molding die comprising a punch (11) movable up and down with respect to the die (1).
7) A horizontal die plate (87) provided on a die body (55) is provided with a horizontal lower surface capable of pressing and fixing the work (W), and a rising part to be formed into one part of the work (W) is formed. The die (17) is provided with a substantially vertical regulating surface, and the slide shaft (6) supported vertically below the die body (55) so as to be vertically movable.
9), and the die plate (8) is formed on the upper portion of the slide shaft (69) to form the rising portion.
7) is provided with a die chip (81) that can project upward. The die chip (81) is guided by an inclined surface (91) formed on the die plate (87) when projecting upward, and is guided by the punch (11). A) a substantially vertical work forming surface (83) that is movable toward the regulation surface and that can clamp a rising portion of the work (W) between the regulation surface and the regulation surface. Mold.