JP2925027B2 - Work vertical punch press - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a work vertical turret punch press for punching a predetermined position in a state where a plate-like work is vertically set.

(Prior Art) In a conventional turret punch press, a turret axis is vertical, and various punches are vertically disposed on the same circumference of an upper turret. A die corresponding to the punch is mounted on the same circumference of the lower turret as opposed thereto.

Therefore, the plate-shaped workpiece is subjected to a punching process that is horizontally inserted into a slight gap between the upper and lower turrets.

In order to insert the work into the processing position, the work is first loaded on the horizontal support table from the rear to the origin positions of the X-axis (left-right direction) and the Y-axis (front-rear direction).

Therefore, a workpiece placed on the carry guide that is NC-controlled in the Y-axis direction and placed at the origin positions of the X-axis and Y-axis by a plurality of clamp devices mounted on a carriage that is NC-controlled in the X-axis direction. Clamp. Next, the work is slid horizontally on the support table by NC control while X, Y
It moves in the axial direction and is positioned at the processing position. Note that a large number of carry balls are embedded in the support table in order to reduce the friction of the horizontal movement.

(Problems to be Solved by the Invention) In a conventional turret punch press, since a work is placed horizontally on a support table and moved, an installation area having an area ratio, for example, about four times larger than a workable work size is large. There is a disadvantage called.

Further, since the work is placed horizontally on the support table and moved, there is a limit in moving the work at high speed due to the rolling friction of the carry ball.

In addition, if the punching waste is caught on the die or falls on the support table, not only is the work scratched during the movement, but the work may be defective.

Further, when a molding die or the like is mixedly loaded in the turret, there is a disadvantage that the work is easily scratched.

In addition, it is a troublesome structure to attach and remove the mold to and from the turret.

The present invention has been devised to solve such a conventional problem.

(Means for Solving the Problems) In order to achieve the above object, the present invention provides a work holding device that holds a work vertically and is movable in a horizontal direction along the work surface. First and second mold heads, which are provided on both sides of the held work and are opposed to the work surface and have a punch and a die, respectively, and which can move up and down; A work vertical punch press was configured by including a frame supporting each of the second mold heads.

In the work vertical punch press, the first
The second mold head is provided with an operating portion for operating the punch and the die mounted at an appropriate distance from the work surface in cooperation with each other.

The frame is movable horizontally along the work surface, and the first and second mold heads have
The punch or die mounting portion is provided in the direction or more, and an automatic die changing device is provided at a lateral position of the first and second die heads.

(Operation) By employing the work vertical punch press of the present invention, the work is carried in from above and held by the work holding device. Further, the first and second mold heads supported by the frame are rotated to index and position the desired punches and dies of the first and second mold heads so as to correspond to the respective inner sides. . Next, the work holding device and the frame are relatively moved in the horizontal direction, and the first and second rotary heads are moved up and down so that the predetermined position of the work is positioned at the processing position. The punching process is performed on the work by operating the work.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a plan view of a work vertical punch press according to the present invention, FIG. 2 is a left side view, and FIG. 3 is a front view.
The whole picture is explained using these figures.

For convenience of explanation, the left in FIG.
The lower part is called left and the upper part is called right, and the upper part in FIGS. 2 and 3 is called upper part and the lower part is called lower part.

A center guide rail 5 is mounted on the bed 3 of the work vertical punch press 1, and holds the work carriage 7 slidably in the front-rear direction. A nut member 7N protrudes into the bed 3 below the work carriage 7, and the work carriage 7 is driven in the front-rear direction (X-axis direction) by a work motor 11 and a center feed screw 9 screwed to the nut member 7N. And NC controlled.

Also, a front pole 13a and a rear pole 13b are erected before and after the work carriage 7, and a plurality of clamp devices 15 are provided inside these and above the work carriage 7 to clamp the work W to the reference position. Thus, the work holding device 17 is formed comprehensively.

Next, a punch 19 or a die is placed at the symmetric position of the work W.
A punch holder 23 or a die bolder 25 holding the first and second left and right columns (frame) 27a and right second column 27b are slidably supported in the vertical direction (Y-axis direction). First and second mold heads 29a and 29b are mounted. Further, these mold heads 29a, 29b are NC-controlled by a linear drive mechanism such as a linear motor 31 provided in the first and second columns 27a, 27b on the left and right, and are moved in the vertical direction (Y-axis direction).
To slide.

If the vertical length of the work vertical punch press 1 is to be reduced as much as possible, the first and second columns 27a and 27b are directly fixed to the bed 3.

However, as will be described later, the punch holder 23 or the die holder 25 is transferred between the left and right automatic die exchanging devices and the first and second die heads 29a and 29b, and the work W In order to efficiently perform processing alignment in the X-axis direction which is the longitudinal direction of the first and second columns 27a and 27
b is also moved in the X-axis direction. To do this, the pair of first and second guide rails 33a and 33b on the left and right on the bed 3
It is slidably held in the front-rear direction (X-axis direction). No.
1, the second die carriages 35a and 35b are the first and second guide rails 3.
The first and second columns 27a and 27b are placed on 3a and 33b, respectively.
Is fixed vertically.

On the other hand, below the first and second die carriages 35a and 35b,
A nut member 37N protrudes into the bed 3, and includes first and second feed screws 37a and 37b and first and second mold motors 39a and 39b, respectively.
Accordingly, the first and second die carriages 35a and 35b are driven in the front-rear direction (X-axis direction), respectively, and are NC controlled.

When the upper portions of the first and second columns 27a and 27b are connected by a beam 41 to form a portal structure, rigidity as a frame is increased, and machining accuracy is improved.

These series of devices collectively hold a mold and carry out XY
A mold holding device 43 is formed to be driven by the shaft.

Therefore, the mold holding device 43 and the work holding device
By moving the workpiece 17 simultaneously and in the opposite direction in the X-axis direction, the relative speed increases, and the workpiece W can be efficiently moved to the processing position.

FIG. 4 is a horizontal sectional plan view of a mold head including a column.

With reference to this figure, an operating portion for operating the punch 19 and the die 21 in cooperation with each other and a turret mechanism for rotating the die head will be described.

In this embodiment, the first and second die heads 29a and 29b have four-directional surfaces, and the punch holder 23 or the die holder 25 is attached to each surface. The punch 19 or the die 21 contained therein is moved by the fluid pressure cylinder 45 when facing the work W.

Although the description will be given for the second mold head 29b, the first mold head 29a has the same structure.

First, the second column 27b supports a sleeve 57 in the shape of a hollow disk with a ring gear 55 cut at a partial height of the outer periphery so as to be slidable in the vertical direction (Y-axis direction).
31 performs NC control in the Y-axis direction. Further, the second column 27b is provided with a slit 59 in the axial direction, protrudes the head end portion of the fluid pressure cylinder 45 having an external angle cross section attached to the sleeve 57, and serves as a feather key to serve as a plunger 47 with a piston. Is always directed inward, that is, toward the workpiece W.

The fluid pressure cylinder 45 is attached to the rod end mounting flange 53.
Attached to the sleeve 57 from outside with the plunger 47
Is always urged by the spring 49 in the retracting direction. On the other hand, there is a piping port at the head end, and elbow 51
Are screwed in and connected to a high pressure fluid pressure source or released to atmospheric pressure.

Next, the ring gear 55 cut on the outer periphery of the sleeve 57
Engages with the pinion 61 pivotally supported by the second mold head 29b, and is driven by a built-in motor (not shown).
Can be turned to stop in any direction. That is,
Punch holder 2 attached to outer surface of second mold head 29b
The 3 or the die holder 25 is directed to the direction of the work W, or to the automatic die changing apparatus described later.

Next, FIG. 5 is an axial sectional view of a punch holder including a punch. FIG. 6 is an axial sectional view of a die holder including a die. In each of the figures, the left and right sides are cross sections perpendicular to the sides of the outer surface of the square, and the right side is a diagonal cross section. FIGS. 7A and 7B are explanatory diagrams for moving the punch and the die in and out of the work by an appropriate distance a. FIG. 7A shows a retracted state, and FIG.

Now, in FIG. 5, the plate holder is held in the inner hole of the punch holder 23.
63 is slidably fitted in the axial direction, and is urged by a spring 65 so that it can always be pulled in until it hits the snap ring at the upper end of the inner hole. The amount of protrusion is the outer protrusion and the bottom of the inner hole It is held down by the dimension a.

Next, the punch 19 is bolted integrally with the handle 67, and is fitted slidably in the axial direction in the inner hole of the plate retainer 63,
The upper end of the handle 67 is bolted to the flange 69, so that the leaf spring 71 (stronger than the spring 65) can handle the handle 67.
The large diameter portion is always urged in the retraction direction until it hits the upper end of the inner hole of the plate retainer 63.

The protrusion is limited until the lower end of the flange 69 contacts the upper end of the plate retainer 63.

Further, the punch holder 23 is positioned by the second mold head 29b, the concave and convex guide holes and the guide protrusion cylinders provided respectively, and fastened by a plurality of bolts 73.
The snap ring at the end of the head hole of the bolt 73 is retained inside when the bolt 73 is removed to prevent loss. Next, in FIG. 6, the die is inserted into the inner hole of the die holder 25.
21 is slidably fitted in the axial direction, and is urged by a spring 65 (the same component as that used for the plate retainer 63) so as to always retract until it hits the snap ring at the upper end of the inner hole.
In addition, the amount of protrusion is suppressed by the dimension a where the outer peripheral protrusion portion and the inner hole bottom contact. A cap 75 is fastened to the upper end of the die 21 by a screw.

Further, the die holder 25 is positioned by the second mold head 29b, the concave and convex guide holes and the guide protrusion cylinders provided respectively, and fastened by a plurality of bolts 73. The snap ring at the end of the head hole of the bolt 73 is retained inside when the bolt 73 is removed to prevent loss. A relief hole 77 formed in the side surface of the die 21 is a hole for allowing the waste to escape to the outside.

In the examples shown in FIGS. 5 and 6, one punch 19 and one die 21 are contained in the punch holder 23 and the die holder 25, respectively.

With the above-described configuration, in order to perform the punching process, first supply the high pressure fluid to the elbow 51 of the liquid pressure cylinder 45 on the die 21 side, and the plunger 47 pops out and the cap 75 in FIG. Is pressed to make the die protrude by the dimension a to make contact with the surface of the work W. At the next moment, if high pressure fluid is supplied to the elbow 51 of the fluid pressure cylinder 45 on the punch side, the plunger 47 jumps out and pushes the flange 69 in FIG. At this time, since the leaf spring 71 is stronger than the spring 65,
The work W in which the punch 19 presses the spring 65 while the punch 19 and the plate retainer 63 are integrated, and the die 21 is stepping on the opposite side opposite position
The plate presser 63 protrudes until it comes into contact with the surface, and thereafter, only the punch 19 and the handle 67 protrude against the urging force of the plate spring 71, and punching is performed. At this time, the processing waste is released from the escape hole 77 to the outside.

Next, when the elbows 51 of both the hydraulic cylinders 45 on the punch side and the die side are released to the atmospheric pressure, the plunger 47 is retracted to the original position by the urging force of the spring 49.

At the same time, the punch 19 is
And die 21 are retracted to their original positions.

FIG. 7A shows the die 21, the punch 19 and the plate holder 63.
Indicate that they are always apart from the work W by the dimension a.

FIG. 7 (2) shows a state at the time of processing. Die 21 first
Immediately after contacting with the work W, the punch 19 and the plate holder 63 approach the work W, and when the plate holder 63 comes into contact with the work W,
The work W is punched further by punch 19 and scrap 79
To the die 21 side.

1 and 2 again, the first die automatic exchange device 81 capable of holding the punch holder 23 or the die holder 25 to the left and right behind the bed 3 and moving it to an appropriate position with a chain.
a and a second die automatic exchanging device 81b.

Therefore, after appropriately adjusting the heights of the first and second mold heads 29a, 29b, the built-in pinion 61 is turned to turn the punch holder 23 or the die holder 25 to be exchanged rearward. Further, if the mold holding device 43 is retracted and brought into contact with the front surfaces of the first and second automatic die changing devices 81a and 81b, the punch holder 23 or the die holder 25 can be delivered to these. The opposite is also possible.

The first and second automatic die changing devices 81a and 81b have a built-in bolt attaching / detaching device (not shown) for turning the bolt 73 in the punch holder 23 or the die holder 25. From the arrow C (FIG. 2) on the rear surface, the operator replaces the punch holder 23 or the die holder 25.

The description of the embodiments has been completed above, but the present invention can be implemented in other modes other than the above-described embodiments by making appropriate design changes of the present invention.

For example, in FIG. 4, the stroke is increased by projecting the head side of the hydraulic cylinder into the column. This is because the retraction dimension a of the punch or the die from the work is large, and in the case of the gate-shaped mold holding device, in order to pass the pole after the work holding device and to increase the mass of the plunger,
It is intended to increase the impact of punching.

However, the dimension a may be small as long as the work is not damaged, and the hydraulic cylinder may be a small one that fits in the sleeve if the impact punching effect is not so expected.

〔The invention's effect〕

As is apparent from the above detailed description, the work vertical punch press embodying the technical concept of the present invention has the following effects.

First, since the workpiece is held vertically and moves, the processing waste does not fall down and damage the workpiece.

Since a carry ball is not required, there is no speed limitation due to the rolling friction, so that the moving speed of the work can be increased.

Since the work holding device and the mold holding device move relatively, high-speed positioning is possible.

In addition, since the punch and the die are always at an appropriate distance a from the work, the work coming into the processing position may be damaged, or a clamp may be displaced by hitting a scum climbing on the die or the work. Never. Further, even if a molding die or the like is mixedly loaded in the turret, there is no problem in moving the work.

Since either a punch or a die can be mounted on the die head surface, molding can be performed from either side of the work.

The turning of the die head and the retreating operation of the die holding device facilitate the transfer of the punch and the die to and from the automatic die changing device.

Since the workpiece does not move on a flat surface, the size of the machine, particularly the width, is reduced, which is effective in saving space.

[Brief description of the drawings]

FIG. 1 is a plan view of a work vertical punch press according to the present invention. FIG. 2 is a left side view. FIG. 3 is a front view. FIG. 4 is a horizontal sectional plan view of a mold head including a column. FIG. 5 is an axial sectional view of a punch holder including a punch. FIG. 6 is an axial sectional view of a die holder including a die. FIG. 7 is an explanatory view for allowing a punch and a die to enter and exit from the work by an appropriate dimension a, where (1) shows a retracted state and (2) shows a projected state. 17 Work holding device, 19 Punch, 21 Die 29a First die head, 31 Linear motor, 43
Mold holding device 45 …… Fluid pressure cylinder, 63… Plate holder, 81a …… First die automatic exchange device

Claims (4)

(57) [Claims] A work holding device which holds the work vertically and is movable in a horizontal direction along the work surface; and a work holding device provided on both sides of the work held by the work holding device. And a vertically movable first and second mold head having a punch and a die, respectively, and a frame respectively supporting the first and second mold heads, at positions opposing each other. Vertical punch press for workpieces. 2. An operating section for operating the punch and die mounted on the first and second mold heads at an appropriate distance from the work surface in cooperation with each other. The vertical punch press for a work according to claim 1, wherein: 3. The work vertical punch press according to claim 1, wherein the frame is movable in a horizontal direction along the work surface. 4. The first and second mold heads have mounting portions for the punch or die in two or more directions, are rotatable about a vertical axis, and have the first and second mold heads. 2. The vertical punch press for workpieces according to claim 1, further comprising a die car changing device at a side position of the second die head.