JP2002346660A - Turret punch press having means for preventing slug float - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a turret punch press having a means for preventing rising of scrap with enough sucking force independent of the variation in the size of a die as well as with enough sucking force even for an ATC-corresponding turret punch press having an ejection pipe. SOLUTION: A plurality of die sets are provided, where punches and dies in an upper and lower turrets make pairs. The die sets selected from the plurality of die sets are indexed at a working position K1 to be press-worked in a turret punch press. A disc support 37 with a through hole 85 communicating with an exhaust device is provided between the lower surface of a lower turret 15 and a lower frame 3 at the working position. A pair of slides 73 is provided over the through hole in a horizontally movable manner. Scrapers 75 contactable with the bottom surface of the lower turret are provided on each of the slides in a movable up and down manner. Additionally, the pair of slides is provided such that each is approachable and separable from each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turret punch press provided with scum lifting prevention means. More particularly, the present invention relates to a turret punch press in which a dreg rise preventing means is provided on a disk support.

[0002]

2. Description of the Related Art Regarding a device for preventing scum rise in a turret punch press, for example, Japanese Utility Model Laid-Open No. 4-10892.
As disclosed in Japanese Unexamined Patent Publication No. 4 (1999) -2004, a disk support (35) which receives a punching load applied to a lower turret (25) at the time of punching is provided with suction means for sucking the lower turret in a downward direction. In some cases, a vertically movable shutter for shielding a gap between the disk support and the disk support is provided.

[0003]

However, in the apparatus disclosed in Japanese Utility Model Laid-Open No. 4-108924, for example, a turret punch compatible with an automatic tool changer (ATC) as disclosed in Japanese Unexamined Patent Publication No. 2000-140957. There are the following problems in application to presses.

In the turret punch press corresponding to the automatic tool changer (ATC) as described above, the turret punch press is provided at a position approximately 225 degrees clockwise (when the upper and lower turrets are viewed from above) from the processing position (K1) immediately below the ram. At a die (die) exchange position (K3), a die (D) mounted on a die holder (43) provided on the upper surface of the lower turret (15) is provided so as to be pulled upward.

The above-mentioned die is placed on the upper surface of an eject pipe (47) provided to be able to move up and down on the lower turret 15, and the lower end of the eject pipe (47) projecting downward from the lower surface of the lower turret 15 is attached to the die. The die is removed from the die holder by being pushed up by a fluid pressure cylinder (63).

Therefore, when the die is indexed to the machining position (K1), when the upper and lower turrets are rotated, the lower end of the eject pipe interferes with the disk support (46), so that the notch (69) through which the eject pipe passes. Are provided on the disk support (46).

[0007] Therefore, the above-mentioned Japanese Utility Model Laid-Open No. 4-108924.
In the case where the device for preventing the scum from rising is applied, the suction force for sucking the scraps remaining in the die D is significantly reduced. In addition, since the interval between the two shutters (39) of the flattening prevention device is constant, the suction force may decrease depending on the size of the die (die).

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. An object of the present invention is to provide a sufficient suction force even when the size of a die (die) changes, and
It is an object of the present invention to provide a turret punch press provided with a scrap lifting prevention means capable of obtaining a sufficient suction force even in a turret punch press for an automatic tool changer (ATC) having an eject pipe protruding from a lower surface of a lower turret.

[0009]

According to a first aspect of the present invention, there is provided a turret punch press provided with a spill-up preventing means, comprising a punch mounted on an upper turret and a die mounted on a lower turret. A plurality of pairs of mold sets are provided, and a turret punch press for performing a press working by indexing a mold set selected from the plurality of mold sets to a processing position, and the lower turret at the processing position. A disc support having a cut-out drop port communicating with the exhaust device is provided between the lower surface and the lower frame, and a pair of slides that are movable horizontally in the drop port is provided on the drop port, and each of the slides is provided on the bottom surface of the lower turret. The invention is characterized in that a contactable scraper is provided so as to be movable up and down, and the pair of slides are provided so as to be able to approach and separate from each other. A.

According to a second aspect of the present invention, there is provided a turret punch press provided with a scrap lifting prevention means, wherein the slide is orthogonal to a radial direction of the upper and lower turrets at the processing position. A pair of slide guides for guiding in the direction in which the scraper is provided are provided above the pair of slide guides, and a pair of guide blocks that slidably contact the lower turret lower surface are provided. The invention is characterized in that a gap is provided between the upper part of the pair of slide guides and the lower surface of the lower turret so that an eject pipe can pass therethrough.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a turret punch press provided with a scrap lifting prevention means according to the present invention. The turret punch press corresponds to an automatic tool changer (ATC).

Referring to FIG. 1, a turret punch press 1 has columns 5 and 7 erected on both sides of a lower frame 3.
A so-called gate-shaped frame is provided in which an upper frame 9 integrally provided at the upper ends of the columns 5 and 7 is horizontally suspended.

An upper turret 11, which is a punch support member on which a plurality of punches (upper molds) P are mounted, is rotatably supported by an upper turret rotating shaft 13 on the lower surface of the upper frame 9.

A lower turret 15, which is a die supporting member on which a plurality of dies (lower dies) D that are paired with the punch P, is mounted on the upper surface of the lower frame 3 opposite to the upper turret 11. . That is, the upper turret 11
And a die (lower die) D mounted on the lower turret 15 constitute a pair of die sets, and a large number of die sets include upper and lower turrets (11, 11).
15).

The outer diameter of the lower turret 15 is larger than the outer diameter of the upper turret 11, and the lower turret rotating shaft 17 for rotating the lower turret 15 is eccentric from the upper turret rotating shaft 13. It is provided. Also, as shown in FIG. 1, the processing position K1 and the punch (upper die)
An exchange position K2 and a die (lower die) exchange position K3 are provided.

The punch P and the die D are arranged on a plurality of concentric circular orbits on the upper and lower turrets 11 and 15, and the center of the punch P coincides with the center of the die D at the processing position K1. It is provided as follows.

The punch P positioned at the processing position K1
For example, a hydraulic cylinder 19 is provided in the upper frame 9, and a ram 21 is provided on a piston rod of the cylinder 19.

Therefore, by rotating the upper turret 11 and the lower turret 15 by a servo motor (not shown), a desired mold set paired with the punch P and the die D is moved to the machining position K1 immediately below the ram 21. Can be positioned. Also, the lower turret 1 at the processing position K1
A disk support 37 for supporting the lower turret 15 is provided on the lower frame 3 below the lower frame 5.

Therefore, after selecting an appropriate mold set including the punch P and the die D, the fluid pressure cylinder 19
Is operated, the work W positioned between the punch P and the die D by the positioning means described later can be punched.

On the upper surface of the lower frame 3, a work table 23 surrounding the lower turret 15 is provided.
Above the worktable 23, a Y-axis feed screw 27 driven by a Y-axis drive motor 25 rotates the Y-axis.
A carriage base 29 is provided which can be moved and positioned in the axial direction (the horizontal direction in FIG. 1).

The carriage base 29 is provided with an X-axis carriage 3 which can be moved and positioned in the X-axis direction orthogonal to the Y-axis via an X-axis drive motor and an X-axis feed screw (not shown).
The X-axis carriage 31 is provided with a plurality of work clamps 33 for gripping an end of a plate-like work W.

Therefore, the positioning of the work W between the upper turret 11 and the lower turret 15 can be performed by appropriately driving the X-axis drive motor and the Y-axis drive motor under the control of an NC device (not shown). it can.

At a position adjacent to the right of the turret punch press 1, a die changing device 101 which is an automatic tool changing device in the punch press is provided. The mold changing device 101 includes a tool changer 103 and a mold magazine 105.

The punch change arm 107 of the tool changer 103 mounts or removes the punch P at the punch change position K2 of the upper turret 11,
The die exchanging arm 109 is provided so as to mount or remove the die D at the die exchanging position K3 of the lower turret 15.

The mold (punch, die) exchange positions K2 and K3 are provided at positions rotated clockwise by about 225 degrees from the processing position K1 when the upper and lower turrets 11 and 15 are viewed from above. . Further, when the mold (punch, die) is manually replaced, the mold (punch, die) replacement is performed near 135 ° which is opposite to the mold (punch, die) replacement position K2, K3. .

At the tip, known mold grippers 111, 11
3. The punch and die exchanging arms 107 provided with
Reference numeral 09 denotes a support 115 provided with a gear rotatably provided by a drive motor M1 via G1 and G2 so as to be movable and positioned vertically (Z-axis direction).

The mold magazine 105 stores a large number of punch mold turrets 119 and a large number of dies D on a rotatable support 117 by a drive motor M2 via gears G3 and G4. A possible die turret 121 for the die is provided.

The mold exchanging by the mold exchanging apparatus 101 as described above is performed by the mold (punch, die) exchanging arms 107 and 109.
Are positioned at the mold (punch, die) exchange positions K2, K3, and then the mold (punch, die) exchange arm 107,
109 is lowered, the punches P and the dies D are gripped by the die grippers 111 and 113 and pulled out upward, and the die (punch and die) exchanging arms 107 and 109 are rotated,
It is stored in the mold magazine 105.

Then, necessary punches P and dies D are taken out from the mold magazine 105, and the upper and lower turrets 11 and 15 are taken out.
To the empty mold station.

As shown in FIGS. 2 and 3, a die holder 35 is provided on the lower turret 15. The die holder 35 is provided with a die mounting hole 41 and a guide hole 43 having a slightly smaller diameter and concentric with the die mounting hole 41. The lower turret 15 is provided with a guide hole 45 coaxial with the guide hole 43 and having the same diameter as that of the guide hole 43.

In the die mounting hole 41, a die holder 35 is provided.
And an eject pipe 39 which penetrates the lower turret 15 and is movable up and down. An upper flange 47 having the same diameter as the die D is provided at an upper portion of the eject pipe 39, and the eject pipe 39 is locked by the upper flange 47 so as not to drop downward from the die mounting hole 41 of the die holder 35. .

At the outer diameter of the die D, a key groove 49 parallel to the axis of the die D is provided from the upper surface to the lower surface.
Also, the same key groove 51 as the key groove 49 provided in the die D is provided on the outer diameter portion of the flange 47 of the eject pipe 39.

On the other hand, the die holder 35 has a key groove 49 provided in the die D and a key groove 51 provided in the key groove 51 provided in the flange 47 of the eject pipe 39 at the same time.
3 are provided. The die key 53 is detachably fixed to the die holder 35 with bolts or screws 55 or the like.

The lower frame 3 below the eject pipe 39 is provided with a cylinder 61 having a piston rod 68 for pushing the eject pipe 39 upward.

When the die D is removed from the die holder 35 by the die exchanging device 101, the die exchanging arm 109 is positioned at the die exchanging position K3, and then a pusher (not shown) provided on the die exchanging arm 109 is lowered. At the same time, the piston rod 68 of the cylinder 61 is raised, the die D and the eject pipe 39 are clamped between the pusher and the piston rod 68, and the piston rod 68 is further raised in the clamped state, so that the die D From the die holder 35.

Next, a disk support 37 having a scrap lifting prevention device, which is a main part of the present invention, will be described with reference to FIGS.

As shown in FIGS. 1 and 4, the disk support 37 is provided below the lower turret at the processing position K1, and the die D arranged on a circular track on the lower turret 15 is It is provided so as to be located substantially above the suction chamber 38.

The structure of the disk support 37 will now be described with reference to FIG.
This will be described in detail with reference to FIGS.

A base 60 is fixed on the lower frame 3 with a fastening member 63 such as a bolt. This base 60
On the upper surface of the lower turret 15, two slide guides 65 (a, b) are provided integrally, which are spaced apart in the radial direction of the lower turret 15, and which stand upright toward the lower surface of the lower turret 15. More specifically, the above-mentioned two slide guides 65 (a, b)
Is provided to extend in a direction orthogonal to a straight line 46 passing through the center of the die D positioned at the processing position K1 and the rotation center O of the lower turret 15.

At the upper part of the slide guide 65 (a, b), a guide block 67 (a, b) is fixed to the slide guide 65 (a, b) with a bolt 69. The upper surface of the guide block 67 (a, b) is the lower turret 1
The lower turret 15 is slidably provided on the upper surface of the guide block 67 (a, b). Note that the slide guide 65 and the guide block 67 may be integrated.

A guide groove 71 (a, b) is provided inside the slide guide 65 (a, b).
A pair of slides 73 (a, b) are slidably engaged with b).

The guide groove 7 provided in the slide 73 (a, b)
7 (a, b) is provided with a plate-shaped scraper 75 (a, b) that can be raised and lowered, respectively. Both ends of the scraper 75 (a, b) in the front-rear direction (in FIG. 5) are in substantially airtight contact with the guide block 67 (a, b), and are vertically (in FIG. 5) and left-right (in FIG. 5). 5, in FIG. 6).

The scraper 75 (a, b) is connected to a piston rod 81 of a pneumatic cylinder 79 provided on the slide 73 (a, b). It is provided to do. Further, a fluid pressure cylinder 83 (a, b) for moving the slide 73 (a, b) in the left-right direction (in FIGS. 5 and 6) is attached to the base 60. Further, a drop port 85 for dropping the scrap from the die D is provided.

As shown in FIG. 6, the slide guide 6
A gap G is provided between the upper surface of 5 (a, b) and the lower surface of lower turret 15. In this state, when the pneumatic cylinder 79 is operated to raise the scraper 75 (a, b), the upper end of the scraper 75 (a, b) is
5 stops in contact with the lower surface.

When the scrapers 75 (a, b) are raised, the scraper 75 (a, b) is placed between the lower surface of the lower turret 15 and the drop port 85 of the disk support 37.
(a, b) and the guide block 67 (a, b) form the suction chamber 38 surrounded on four sides. Further, a duct (not shown) connected to an exhaust device (not shown) provided below the disk support 37 is connected to the drop port 85.

In the disk support 37 having the above structure, the scrapers 75 (a, b) are raised and
In a state where the exhaust device (not shown) is operated,
By performing the punching process of the turret punch press 1, it is possible to prevent the scum in the hole of the die D from floating above the die D.

When the upper and lower turrets (11, 15) are rotated to use another mold set (punch, die), the lower part of the scraper 75 (a, b) is lowered. The eject pipe 39 projecting downward from the turret 15 is provided so as to be able to rotate without interfering with the scrapers 75 (a, b).

Further, the fluid pressure cylinder 83 (a, b) is operated in accordance with the size of the mold so that the scraper 75 is operated.
By properly adjusting the left and right intervals of (a, b), it is possible to prevent a decrease in suction efficiency.

Next, another embodiment of the disk support 37 is shown in FIGS. Note that the same components as those of the disk support 37 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the embodiment shown in FIGS. 8 and 9, the drive cylinder 83 for moving the pair of slides 87 (a, b) in the left-right direction is provided only on one slide.

For example, a vertical rotation shaft 88 is provided on the slide guide 65b, and a rack portion 91 which engages with a pinion 89 fixed to the rotation shaft 88 is moved to the left slide 8
7a, a rack portion 93 that engages with the pinion 89 is also provided on the right slide 87b.

With the above configuration, one driving cylinder 83
, The pair of slides 87 (a, b) can be moved toward or away from each other. That is, the interval between the scrapers 75 (a, b) can be appropriately adjusted.

[0054]

According to the first or second aspect of the present invention, the left and right intervals of the scraper can be appropriately adjusted according to the size of the mold used for processing, so that a reduction in suction efficiency can be prevented. .

The present invention can also be applied to a turret punch press compatible with an automatic tool changer (ATC) having an eject pipe protruding from the lower surface of the lower turret.

[Brief description of the drawings]

FIG. 1 is an example of a turret punch press having a disk support according to the present invention, which is an automatic tool changer (ATC).
The corresponding turret punch press is shown.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a view taken in the direction of the arrow III in FIG. 2;

FIG. 4 is a view taken along line IV-IV in FIG. 1;

FIG. 5 is a detailed explanatory diagram of FIG. 4;

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a sectional view taken along the line VII-VII in FIG. 6;

FIG. 8 is another embodiment (plan view) of the disk support 37. Note that the same components as those of the disk support 37 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

FIG. 9 is a sectional view taken along the line IX-IX in FIG. 8;

[Explanation of symbols]

 Reference Signs List 1 turret punch press 3 lower frame 5, 7 column 9 upper frame 11 upper turret 13 upper turret rotating shaft 15 lower turret 17 lower turret rotating shaft 19 fluid pressure cylinder 21 ram 23 work table 25 Y-axis drive motor 27 Y-axis feed screw 29 Carriage base 31 X-axis carriage 33 Work clamp 35 Die holder 37 Disk support 38 Suction chamber 39 Eject pipe 41 Die mounting hole 43, 45 Guide hole 47 Upper flange 49, 51 Key groove 53 Die key 55 Screw 59 Escape groove 60 Base 61 Cylinder 65 ( a, b) Slide guide 67 (a, b) Guide block 71 (a, b) Guide groove 73 (a, b), 87 (a, b) Slide 75 (a, b) Scraper 77 (a, b) Guide Groove 79 Pneumatic cylinder 81 Piston rod 83 (a, b) Fluid pressure cylinder 85 Drop port 88 Rotating shaft 89 Pinion 91, 93 Rack 101 Mold changing device 103 Tool changer 105 Mold magazine 107 Punch exchange arm 109 Die exchange arm 111, 113 Mold gripper 115, 117 Support 119 Punch metal Die turret 121 Die die turret D Die K1 Processing position K2 Punch replacement position K3 Die replacement position M1, M2 Drive motors G1, G2, G3, G4 Gear P Punch W Work

Claims (2)

[Claims] 1. A plurality of mold sets, each pair comprising a punch attached to an upper turret and a die attached to a lower turret, are provided, and a mold set selected from the plurality of mold sets is set at a processing position. A turret punch press for indexing and press working is provided, and a disk support having a cut-out dropper communicating with an exhaust device is provided between the lower surface of the lower turret and the lower frame at the processing position, and a horizontal direction is provided on the dropper. A pair of movable slides, a scraper capable of contacting the bottom surface of the lower turret is provided on each of the slides so as to be able to move up and down, and the pair of slides is provided so as to be able to approach and separate from each other. Turret punch press equipped with a rise prevention means. 2. A turret punch press provided with a scrap lifting prevention means according to claim 1, further comprising a pair of slide guides for guiding said slides in said processing position in a direction orthogonal to a radial direction of said upper and lower turrets. A pair of guide blocks that slidably contact the lower surface of the lower turret are provided above the pair of slide guides, and both ends of the scraper are slidably contacted with the pair of guide blocks; A turret punch press provided with a scrap lifting prevention means, wherein a gap through which an eject pipe can pass is provided between an upper portion of a slide guide and a lower surface of the lower turret.