JPH05138264A - Striker moving device in punch press - Google Patents

Abstract

PURPOSE:To lighten a ram and work without one side loading in a striker moving device which moves the striker attached to the lower part of the ram being movable up and down for striking a punch allocated to the working position in the punch press. CONSTITUTION:In a striker moving device which moves a striker 15 attached to the lower part of a ram 11 being freely movable up and down, a piston rod (moving member) 131 which provides a roller (up and down guiding member) 129 for guiding up and down a guide member (guiding part) 127 of the upper and lower directions provided on the striker 15 is provided by supporting on the upper part frame 5U, and a hydraulic cylinder 135 attached on this piston rod 131 is set so that the displacement is freely changeable to the direction crossing against the moving direction of the ram 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a striker moving device in a punch press such as a turret punch press.

[0002]

2. Description of the Related Art Conventionally, for example, a turret punch press as a punch press is provided with a gate-shaped frame, and upper and lower frames of the frame support rotatable upper and lower turrets. In addition, a plurality of punches and dies are detachably mounted on the circumference of the lower turret at positions facing each other. A position of one of the plurality of punches and dies is defined as a processing position, and a ram having a striker at a lower portion for pressing the punch is movably supported on an upper frame at the processing position.

Further, on the circumference of the upper and lower turrets,
Two tracks are formed so that two punches and two dies are arranged in the radial direction of the upper and lower turrets, respectively. This 2
A striker moving device for moving the striker to two positions is provided on the ram in order to press each punch provided on the track at a processing position.

[0004]

By the way, since the above-mentioned conventional striker moving device for moving the striker to two positions is provided on the vertically movable ram, the striker moving device moves vertically together with the vertical movement of the ram. It is supposed to be done. Therefore, the weight of the ram itself is heavy, and the drive source itself that moves the ram up and down must be a strong one that can bear the weight of the ram. Further, since the striker moving device is provided on one side surface of the ram, there is a problem that one load is applied.

An object of the present invention is to provide a moving member for moving the striker on the frame in order to solve the above problems, so that the weight of the ram provided with the striker can be reduced and the ram is not subjected to one-sided load. It is an object of the present invention to provide a striker moving device in a punch press which enables smooth vertical movement of a ram.

[0006]

In order to achieve the above object, the present invention provides a striker moving device for horizontally moving a striker mounted on a lower portion of a vertically movable ram, and a striker moving device for vertically moving the striker is provided. In the punch press, a moving member having upper and lower guide portions for vertically guiding the directional guide portion is supported by the frame, and the moving member is provided so as to be displaceable in a direction intersecting the moving direction of the ram. The striker moving device was constructed.

[0007]

By adopting the striker moving device in the punch press of the present invention, the striker mounted on the lower part of the vertically movable ram can move the moving member supported by the frame in a direction intersecting the moving direction of the ram. It is moved horizontally by displacing to. Also,
Along the vertical guide portion provided on the moving member, the vertical guide portion provided on the striker is smoothly moved in the guided vertical direction.

Therefore, since the moving member is supported by the frame, the ram provided with the striker is lightened and the vertical movement becomes smooth. In addition, the ram equipped with the striker does not receive a one-sided load.

[0009]

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

Referring to FIGS. 3, 4 and 5, the turret punch press 1 is provided with a common base 3, and a gate-shaped main body frame 5 is erected on the common base 3. The body frame 5 is composed of an upper frame 5U having an opening 7 and a lower frame 5D. A disk support 9 that receives the force of the press is provided at the processing position on the lower frame 5D.

The upper frame 5U of the main body frame 5 is provided with a hydraulic cylinder for moving the ram 11 up and down, or a drive device 13 including a crank drive or a servo drive. A striker 15 is provided below the ram 11. Moreover, the ram 11 is slidably slid in the Z-axis direction (vertical direction in FIGS. 3 and 4) by being guided by the ram guide member 17 attached to the upper frame 5U.

With the above structure, when the driving device 13 is driven, the ram 11 is guided by the ram guide member 17 and Z
Since it moves in the axial direction, the striker 15 is moved up and down.

A plurality of brackets 19 are attached to the lower frame 5D of the main body frame 5 extending in the Z-axis direction at appropriate intervals in the Y-axis direction (left and right directions in FIGS. 4 and 5). A support frame 21 is provided on the plurality of brackets 19. A work table 25 is attached to each of the support frames 21 via a plurality of balls 23.
The side table 25S is provided so as to be movable in the Y-axis direction. The work table 25 has side tables 25S on both sides of a fixed center table 25C.

A carriage base 29 of the plate material movement positioning device 27 is provided on the left side of the work table 25 in FIG. This carriage base 2
A rotatable ball screw 31 extending in the X-axis direction (horizontal direction in FIG. 3, vertical direction in FIG. 5) is supported on the shaft 9. The ball screw 31 is provided with a carriage 33 which is movable in the X-axis sail direction via a nut member. Moreover, the carriage 33 is provided with a plurality of work clamps 35 for clamping the plate material W.

An X-axis motor 37 is provided below the carriage base 29 as shown in FIG. 5, and a drive pulley 39 is attached to the output shaft of the X-axis motor 37. On the other hand, a driven pulley 41 is attached to one end of the ball screw 31, and a timing belt 43 is wound around the driven pulley 41 and the drive pulley 39.

With the above structure, when the Y-axis drive motor (not shown) is driven, the side table 25S is moved in the Y-axis direction through the carriage base 29 and the balls 23 supported by the support frame 21. It will be.
When the X-axis drive motor 37 is driven, the ball screw 31 is rotated via the drive pulley 39, the timing belt 43, and the driven pulley 41, so that the carriage 33 moves in the X-axis direction via the nut member. Will be done. Therefore, the plate material W clamped by the work clamp 35 is moved in the X and Y axis directions, and the desired position of the plate material W is positioned at the processing position below the striker 15.

A sub-frame 45 adjacent to the body frame 5 is erected on the common base 3. The sub frame 45 is an upper frame 45U and a lower frame 45.
It has a D-shaped C-shaped structure. An upper turret 49, which is, for example, a rectangular parallelepiped and is rotatable below the upper frame 45U via an upper rotating shaft 47U, and an upper turret 49 is rotatable above the lower frame 45D via the lower rotating shaft 47D. The lower turrets 51 each having a rectangular shape are supported.

Punches P are provided on both sides of the upper turret 49.
The punch holder PH in which the die D is attached is detachably attached, and the die holder DH in which the die D is attached at a position corresponding to the punch P is detachably attached on both sides of the lower turret 51. Moreover, inside the upper and lower frames 45U and 45D, for example, a fluid cylinder 5 as a rotation driving means for rotating the left and right sides in FIG. 4, that is, the upper and lower rotating shafts 47U and 47D in FIG.
3U, 53D; 55U; 55D are provided, and racks 61U, 61D; 63U, 63D are integrated at the tips of piston rods 57U, 57D; 59U, 59D mounted on the fluid cylinders 53U, 53D; 55U, 55D. Is provided for the purpose. This rack 61U, 61D; 63
Pinions 65 and 67 fitted to the upper and lower rotating shafts 47U and 47D are meshed with the U and 63D.

With the above structure, the fluid cylinders 53U, 5U
3D; 55U, 55D are actuated, the piston rods 57U, 57D; 59U, 59D are moved in the left-right direction in FIG. 6, so racks 61U, 61D;
The upper and lower rotary shafts 47U and 47D are synchronously rotated in the same direction via the U and 63D and the pinions 65 and 67, respectively. Therefore, the structure is simple and
The lower turrets 49, 51 can be rotated at high speed and can be manufactured at low cost. As the rotation driving means, the drive motor, worm, and worm wheel may rotate the upper and lower rotary shafts 47U and 47D.

As shown in FIG. 7, a side portion of the lower turret 51 is provided with a semi-arcuate auxiliary table 71 having a supporting member 69 such as a brush for supporting the plate material W. Therefore, the downward forming process can be performed, and the scratches generated on the plate material W when the lower turret 51 is rotated can be reduced.

With the above construction, the upper and lower rotary shafts 47U,
By the rotation of 47D, the upper and lower turrets 49 and 51 are indexed, and the selected punch P and die D are positioned at the processing position. Then, as the striker 15 moves up and down, the punch P and the die D cooperate with each other to punch the plate W at a desired position.

As described above, the punching process is performed by the operation of the vertically movable ram 11, and the heat generated by the operation at this time is filled in the portion of the upper frame 5U and the upper frame 45U of the sub frame 45. It is released to the part without heat transfer. That is, since the upper and lower turrets 49 and 51 are supported by the upper and lower frames 45U and 45D of the sub-frame 45,
The thermal displacement generated in the lower turrets 49, 51 is only the rotation heat of the upper and lower turrets 49, 51, and is greatly affected by the heat generated by the ram 11 such as misalignment. There is no.

Adjacent to the left side of the upper and lower frames 45U and 45D of the sub-frame 45 in FIG. 3, a punch holder magazine 73 for supporting a punch P to be detachably attached to the upper turret 49 and a lower turret. 51
And a die holder magazine 75 supporting a die D to be attached / detached and replaced. The upper turret 49
As shown in FIG. 3, the punch attaching / detaching / changing position PT is located below the punch holder magazine 73, and the die attaching / detaching / changing position DT of the lower turret 51 is also shown in FIG. On the die exchanging device 77 so as to be located above the die holder magazine 75,
Lower die exchanging devices 77U and 77D are arranged in the vertical direction of the punch and die exchanging positions PT and DT.

The punch and die holder magazines 73 and 7
5 are arranged to face each other in the vertical direction, and endless chain members 79 and 81 are wound around a drive sprocket 83 and a driven sprocket 85 as shown in FIG. Drive motors 87 and 89 such as servo motors are interlocked with the drive sprocket 83. Plural endless clamp claws 91 and 93 for clamping the punches and die holders PH and DH are attached to the chain members 79 and 81 so as to face each other.

Chuck pawls 95 and 97 for clamping the punch and die holders PH and DH are provided below the upper and lower mold exchanging devices 77U and 77D. The upper and lower mold exchanging devices 77U, 7 are driven by drive motors 99, 101 for changers such as servomotors mounted on the upper and lower frames 45U, 45D of the sub-frame 45.
7D can be moved up and down.

With the above structure, while punching the plate W by the cooperation of the punch P and the die D at the working position, at the punch / die attaching / detaching / changing positions PT, DT,
The upper and lower mold exchanging devices 77U, 77D are driven by the drive motor 99,
101 is moved up and down by the upper and lower turrets 49,
The punch and die holders PH and DH mounted on 51 are taken out by the chuck claws 95 and 97, and mounted on the punch and die holder magazines 73 and 75. Next, the punches, the die holders PH, DH are chucked by the clamp claws 91, 93 of the punch, die holder magazines 73, 75.
It is taken out at 7, and attached to the upper and lower turrets 49 and 51. By performing this series of operations, the upper and lower mold exchanging devices 77U, between the punch / die attaching / detaching / replacement positions PT, DT and the punch / die holder magazines 73, 75.
Since the punch and the die holders PH and DH can be directly exchanged by linear movement of the 77D in the vertical direction, the setup and exchange time can be shortened as compared with the conventional case. Therefore, it is possible to handle high-mix low-volume production and flexible automation, and it is possible to perform unmanned operation.

The punch and die holder magazines 73 and 7
In the exchange position of 5, as shown in FIGS. 4 and 5,
An ordinary mold exchanging device 103 having two known arms and a tooling tower 105 are arranged. This mold exchanging device 103 has clamp arms 109 attached to the ends of two arms 107 and can rotate 90 and 180 degrees. Since the structure is already known, detailed description will be omitted. . Further, the tooling tower 105 is also provided with clamp claws 113 in a plurality of steps on the outer periphery of the cylindrical member 111, and punches, die holder PH,
DH is clamped. The cylindrical member 111 is rotatable and vertically movable. That is, the cylindrical member 111 is moved up and down by the operation of the fluid cylinder 115, and the driving pulley 1 is driven by the servo motor 117.
It is configured to be rotated via 19, a timing belt 121, and a driven pulley 123. Therefore, the punch and die holder magazines 73 and 75 and the tooling tower 1
The punch and die holders PH and DH are exchanged with the die exchanging device 103.

A striker 15 mounted on the lower portion of the ram 11 is provided so that its position can be changed. More specifically, as shown in FIGS. 1 and 2, a guide member 125 is attached to the lower portion of the ram 11 by a plurality of bolts, and the striker 15 is attached to the guide member 125 in FIG. It is provided so that it can move in any direction. A guide member 127 is provided on the side surface of the striker 15 as a guide portion extending in the vertical direction. Rollers 129 as upper and lower guide portions are rotatably supported on both sides of the guide member 127. This roller 12
9 is attached to the tip of a piston rod 131 as a moving member.

On the other hand, a fluid cylinder 135 is attached to the upper frame 5U of the main body frame 5 via a bracket 133.
Is fixed, and the piston rod 131 is attached to the fluid cylinder 135.

With the above structure, when the fluid cylinder 135 is operated to extend the piston rod 131 to the right in FIG. 1, the striker 15 is guided and moved by the guide member 125 via the roller 129 and the guide member 127. It will be. Therefore, the center of the striker 15 can be moved and positioned to the center of the punch P mounted on the punch holder PH. Moreover,
Since the fluid cylinder 135 is fixed, the weight of the ram 11 itself including the striker 15 can be reduced, and no one-sided load is applied to the ram 11.

When the striker 15 is moved up and down, the guide member 127 is moved up and down by being guided by the roller 129, so that the striker 15 can be moved smoothly. Further, the moving direction of the piston rod 131 is not limited to the horizontal direction, and it is possible to cope with a swinging structure.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

[0033]

As can be understood from the above description of the embodiments, according to the present invention, since it has the structure as described in the claims, it is mounted on the lower portion of the vertically movable ram. The striker can be easily moved in the horizontal direction, and the moving member for moving the striker in the horizontal direction is not provided on the ram, but is provided on the fixed frame, so the weight of the ram provided with the striker can be reduced. This allows the ram to move up and down smoothly. Further, since the ram is not provided with the moving member, no one-sided load is applied.

[Brief description of drawings]

FIG. 1 is an enlarged view showing a main part of the present invention and showing an example of a striker moving device attached to a lower portion of a ram.

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

FIG. 3 is a right side view of a turret punch press equipped with a mold exchanging device according to an embodiment of the present invention.

FIG. 4 is a front view of FIG.

FIG. 5 is a plan view of FIG.

FIG. 6 is an enlarged view taken along line VI-VI in FIG.

FIG. 7 is an enlarged view of a VII arrow part in FIG.

[Explanation of Codes] 1 Turret punch press 5 Main frame 5U Upper frame 11 Ram 15 Striker 125 Guide member 127 Guide member (guide part) 129 Roller (upper and lower guide part) 131 Piston rod (moving member) 135 Fluid cylinder P punch PH punch holder

Claims (1)

[Claims] 1. A striker moving device for horizontally moving a striker mounted on a lower portion of a vertically movable ram, wherein the striker is provided with a vertical guide part for vertically guiding a vertical guide part provided on the striker. A striker moving device in a punch press, wherein a member is supported by a frame and the moving member is provided so as to be displaceable in a direction intersecting a moving direction of a ram.