JP2003033832A - Turret punch press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lessen flaws which may come out on the backside of a workpiece W while restraining the flexure of the workpiece W during the movement of the workpiece W or the rotation of turrets 21 and 23. SOLUTION: Each die 27 is arranged to be vertically movable against a lower turret 23. There is provided, on the lower turret 23, a protective table 33 which supports the platy workpiece at the level of the pass line. A notch 37 is provided at a place near a punching position P1 on the protective table 33, and there is provided a shutter 45 which opens or closes the notch 37. A raising means 73 is provided to raise a die 27 so that the top face of the die 27 positioned at the punching position P1 may come to a level nearly equal to or higher than the pass line when the shutter 45 opens the notch 37.

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 for punching (punching, forming, etc.) a plate-shaped work.

[0002]

2. Description of the Related Art A conventional general turret punch press will be described below.

That is, the turret punch press is based on a bridge type press body, and this press body has an upper frame and a lower frame which are vertically opposed to each other.

A rotatable disc-shaped upper turret is provided on the upper frame, and a rotatable disc-shaped lower turret is provided on the lower frame so as to face each other vertically. A plurality of punches are annularly arranged on the upper turret, and a plurality of dies are annularly arranged on the lower turret. Then, when the upper turret and the lower turret are rotated around the turret center, a predetermined punch and a predetermined die can be positioned at the punch processing position.

Here, in addition to the punching die and the like, the plurality of dies include an upward forming die, and the upper surface of the punching die and the like is located at the height of the pass line. Further, the upward forming die is movable in the vertical direction with respect to the lower turret, and the upper surface of the upward forming die positioned at the punching position is positioned higher than the pass line. The frame is provided with push-up means for pushing up the upward molding die.

Therefore, the plate-shaped work is moved in the horizontal direction to position the work portion of the work at the punching position. Further, the upper turret and the lower turret are rotated to position a predetermined punch and a predetermined die at the punch processing position. Further, when the predetermined die is a predetermined upward molding die, the predetermined upward molding die is pushed up by the pushing-up means to position the upper surface of the predetermined upward molding die at a height higher than the pass line. Excuse me. Then, by causing a predetermined punch and a predetermined die to cooperate with each other, it is possible to perform punching (punching, forming, etc.) on a portion to be processed of a workpiece.

[0007]

By the way, in the conventional turret punch press, the upper surface of the punching die is located at substantially the same height as the pass line, and the turret (upper turret, lower turret) is being moved while the work is moving. There is a problem that the back surface of the work comes into contact with the top surface of the punching die or the like during the rotation of (1) and the back surface of the work is scratched.

Further, the punching die or the like is configured to be movable in the vertical direction with respect to the lower turret so that the upper surface of the punching die or the like is positioned at a height lower than the pass line during the operation of the work or the turret. A turret punch press that has been developed is also being developed. However, the supporting force of the work becomes unstable on the lower turret, and bending occurs in the thin plate-shaped work, and the back surface of the bent part of the work or the turret during operation and the punching die, etc. However, there is still a problem that the back surface of the work is damaged due to the contact between the two.

[0009]

According to the invention of claim 1, in a turret punch press for punching a plate-shaped work, a rotatable disc-shaped upper turret and a rotatable disc are used. -Shaped lower turret is provided to face each other vertically, a plurality of punches are annularly arranged on the upper turret, a plurality of dies are annularly arranged on the lower turret,
The upper turret and the lower turret are rotated around the turret center so that a predetermined punch and a predetermined die can be positioned at the punching position, and each die is moved vertically with respect to the lower turret. A protective table for supporting the plate-like work at the height of the pass line is provided on the upper side of the lower turret, and a cutout portion is provided at a portion of the protective table near the punching position. A shutter that opens and closes the notch is provided, and when the notch is opened by this shutter, the upper surface of the die positioned at the punching position is approximately the same height as the pass line or higher than the pass line. It is characterized in that a push-up means for pushing up the die is provided so as to be positioned at the height.

According to the invention specifying matter of claim 1,
The plate-shaped work is moved in the horizontal direction to position the work part of the work at the processing position. Further, the upper turret and the lower turret are rotated to position a predetermined punch and a predetermined die at the punch processing position. Here, during work movement or turret (upper turret and lower turret)
During the rotation of, the upper surfaces of the dies are located at a height lower than the height of the pass line, and the notches are closed by the shutter. Supported by.

Next, the notch is opened by the shutter and the predetermined die positioned at the punching position is pushed up by the pushing-up means. This allows the upper surface of a given die to be positioned at approximately the same height as the pass line for punching, for example, and the upper surface of a given die to be higher than the pass line for upward molding. Can be located in Then, by causing a predetermined punch and a predetermined die to cooperate with each other, it is possible to perform punching (punching, forming, etc.) on a portion to be processed of a workpiece. Further, the predetermined die is moved downward so that the upper surface of the predetermined die is located at a height lower than the pass line.

Incidentally, after the upper surface of the predetermined die is positioned at a height lower than the pass line, the notch may be closed by a shutter, and when punching is continuously performed, You may leave the notch open.

According to a second aspect of the invention, in addition to the matters specifying the invention of the first aspect, a large number of brushes for supporting the work are provided on the upper surface of the protection table and the upper surface of the shutter. It is characterized by being planted evenly.

According to the invention specifying matter of claim 2,
In addition to the effect of the invention specifying matter according to claim 1, the contact resistance between the protection table and the work and the contact resistance between the work with the shutter can be reduced.

According to the invention of claim 3, in addition to the matters specifying the invention of claim 1 or 2, at least half or more of the lower turret is covered by the protection table. Characterize.

According to the invention specifying matter of claim 3,
The same action as the action according to the invention specifying matter according to claim 1 or 2 is achieved.

According to a fourth aspect of the invention, in addition to the matters specifying the invention according to any one of the first to third aspects, the punching position on the protection table is separated. It is characterized in that a cutout portion for exchange for exchanging the die is provided in the above-mentioned portion.

According to the invention specifying matter of claim 4,
In addition to the action by the invention specifying matter according to any one of claims 1 to 3, when the die is replaced, the lower turret is rotated to replace the die to be replaced. Position it below the notch. Then, the die to be replaced is detached from the lower turret through the exchange cutout portion, and a new die is attached to the lower turret through the exchange cutout portion. This allows die replacement.

In the invention described in claim 5, in addition to the matters specifying the invention described in any one of claims 1 to 4, each die is attached to the lower turret from below. Die support to support is provided so that it can move vertically,
The pushing-up means pushes up the die by moving the die support that supports the die located at the punching position upward.

According to the invention specifying matter of claim 5,
In addition to the action according to the invention specifying matter of any one of claims 1 to 4, after the lower turret is rotated around the turret center, a predetermined die is positioned at the punching position. , The die support that supports a predetermined die is moved upward by the pushing-up means. As a result, the predetermined die is pushed up, and the upper surface of the predetermined die is positioned at substantially the same height as or higher than the pass line.

In the invention described in claim 6, in addition to the matters specifying the invention described in any one of claims 1 to 5, a laser beam is applied to the work from above. A laser processing head for irradiating the laser beam is provided, and the laser processing position for performing the laser processing by irradiating the laser beam is configured to be close to the punching position.

According to the invention specifying matter of claim 6,
In addition to the action according to the invention specifying matter according to any one of claims 1 to 5, the plate-shaped work is moved in the horizontal direction to position the work part of the work at the laser processing position. Excuse me. Then, the laser processing head irradiates the processed portion of the work with laser light from above to perform laser processing on the processed portion of the work. Here, the notch is closed by the shutter during the movement of the work and the irradiation of the laser beam.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 7 and 8, a punch press 1 according to an embodiment of the present invention is based on a bridge-type press body 3, which has an upper frame 5 and a lower portion. The frame 7 is provided so as to be opposed to the top and bottom (top and bottom in FIG. 7, front and back direction toward the paper surface in FIG. 8). A plate-shaped work W is movably supported on the lower frame 7 in the front-back direction (right and left directions in FIGS. 7 and 8) and in the left-right direction (front and back directions toward the paper surface in FIG. 7, downward and upward direction in FIG. 8). A fixed table 9 is provided, and a pair of movable tables 11 and 13 for movably supporting the work W in the left-right direction are moved in the front-rear direction (right-left direction in FIG. 3) on the left and right sides of the fixed table 9 in the lower frame 7. It is possible. Here, on the upper surface of the fixed table 9 and the upper surfaces of the movable tables 11 and 13, a large number of brushes B that support the work W are planted substantially evenly.

A carriage base 15 extending in the left-right direction is provided at the front of the pair of movable tables 11 and 13.
A carriage 19 having a plurality of clampers 17 for clamping an end portion of the work W is provided on the carriage base 15 so as to be movable in the left-right direction.

A rotatable disc-shaped upper turret 21 is provided on the upper frame 5, and a rotatable disc-shaped lower turret 23 is provided on the lower frame 7 so as to face the upper turret 21 vertically. A plurality of punches 25 are annularly arranged on the upper turret 21, and the lower turret 23
A plurality of dies 27 are arranged in an annular shape. Here, the upper turret 21 and the lower turret 23 are rotatable about a turret center S1 by driving a turret servomotor (not shown), and the upper turret 21 and the lower turret 23 are rotated about the turret center S1. The predetermined punch 25 and the predetermined die 27 can be positioned at the punching position P1. In addition, as will be described later in detail, each die 27 has a lower turret 23.
Of the plurality of dies 27, two dies 27A (see FIGS. 3 and 4) are index dies that rotate around the die center S2. The remaining die 27B (FIGS. 5 and 6)
(See) is not rotatable with respect to the lower turret 23. The punch 25 vertically facing the index die 27A is an index punch that rotates around the die center S2.

A striker 29 is provided above the upper turret 21 to press the predetermined punch 25 positioned at the punching position P1 from above. This striker 29 is a hydraulic cylinder 31 for striker provided in the upper frame 5. It moves up and down by the operation of. The striker 29 can be adjusted in position in the front-rear direction (radial direction of the turrets 21, 23) by a known means.

As shown in FIGS. 1 and 2, on the upper side of the lower turret 23 in the lower frame 7 (front side toward the paper surface in FIG. 1, upper side in FIG. 2), the work W is lined in the front-back direction (FIG. 1). 2 and right and left), a left and right direction (downward and upward in FIG. 1, front and back direction toward the paper in FIG. 2), a protection table 33 is provided via a plurality of columns 35. Although most of the lower turret 23 is covered by the protection table 33, at least the front half of the lower turret 23 may be covered. In addition, the protection table 33
A large number of brushes B for supporting the work W are planted substantially evenly on the upper surface of the protective table 33, and a cutout portion 37 is provided in a portion of the protective table 33 near the punching position P1. An exchange notch 39 for exchanging the die 27 is provided at a portion separated from the punching position P1.

A support plate 41 is provided on the front portion of the protection table 33, and a pair of guide members 43 extending in the left-right direction are provided on the support plate 41. A shutter 45 that opens and closes the notch 37 in the pair of guide members 43.
Are movably provided in the left-right direction, and a large number of brushes B that support the work W are evenly planted on the upper surface of the shutter 45. In order to move the shutter 45 in the left-right direction, an opening / closing cylinder 49 having a piston rod 47 that can move in the left-right direction is provided at an appropriate position of the support plate 41, and the tip end of the piston rod 47 is connected to the shutter 45. I am doing it.

The following describes in detail each index die 27A and constituent elements around each index die 27A.

That is, as shown in FIGS. 3 and 4, the lower turret 23 has a hollow support 51 and a plurality of bearings 53.
It is rotatably provided around the center S2 of the mold via the worm, and the worm wheel 55 is provided on the outer periphery of the hollow support body 51.
Are provided integrally. A die holder 57 for holding the indexing die 27A is provided on the upper part of the hollow support 51 (upper part in FIGS. 3 and 4) so as to be movable in the vertical direction. It is not rotatable via (not shown) and can be biased downward by an appropriate spring 59.

A die holder 57 is provided below the hollow support 51.
A die support 61 that supports the indexing die 27A from below is provided so as to be movable in the up and down direction via a rotation stopper key (not shown).
Cannot rotate with respect to the lower turret 23. A support base 61a is integrally provided at the lower end of the die support 61, and the die support 61 is formed with a through hole 61h through which a scrap or the like falls. A flange 61b is formed on the upper end of the die support 61, and the flange 61b is rotatably connected to the die holder 57.

A pair of index dies 27A,
Also, in order to rotate the punch 25 vertically opposed to these index dies 27A in synchronization with the die center S2 as a center, a die rotation actuating device 63 as shown in, for example, Japanese Patent Laid-Open No. 2000-117347 is provided. Although not described in detail, the mold rotation operating device 63 includes a worm that meshes with the worm wheel 55, a lower rotary shaft, an upper rotary shaft, a rotary motor, and the like.

The die 27B and the components around the die 27B will be described in detail as follows.

That is, as shown in FIGS. 5 and 6, an appropriate number of dies are provided on the lower turret 23 (two dies 27B are shown in FIGS. 5 and 6, but one die 27B may be used).
The die holder 65 for holding 27B has a plurality of guide bars 6
Vertical direction via 7 (vertical direction in FIGS. 5 and 6)
The die holder 65 can be urged downward by an appropriate spring 69. The lower turret 23 is provided with a die support 71 that supports the die 27B from below via a die holder 65 so as to be movable in the vertical direction, and a support base 71a is integrally provided at the lower end of the die support 71. , Die support 7
1 is formed with a through hole 71h through which a scrap or the like falls.

As shown in FIGS. 3 to 6, a push-up means 73 is provided near the lower turret 23 in the lower frame 7, and the push-up means 73 is provided at the punching position P.
The die support 61 (7 supporting the die 27 located at 1
1) is moved upward and the die 27 is pushed up so that the upper surface of the die 27 is positioned at substantially the same height as the pass line or higher than the pass line.

That is, a push-up block 75 for pushing up the die support 61 (71) is provided below the lower turret 23 in the lower frame 7 so as to be vertically movable via a guide member (not shown). In order to move the push-up block 75 in the vertical direction, the lower frame 7 is provided with a push-up cylinder 79 having a vertically movable piston rod 77.
Is connected to the push-up block 75. The push-up block 75 has a support base 61a (71a).
A pull-down hook 81 that can be locked to is provided.

Further, the lower frame 7 is provided with an entrance block 83 which is movable from the right direction (right direction in FIGS. 3 to 6) to the lower side of the push-up block 75 so as to be movable in the left and right directions. In order to move the entrance block 83 in the left-right direction, the lower frame 7 is provided with an entrance cylinder 87 having a piston rod 85 movable in the left-right direction, and the tip end of the piston rod 85 is connected to the entrance block 83. is there. In order that the entry block 83 can easily enter the lower side of the push-up block 75, an inclined portion 75a is formed on the lower right side of the push-up block 75, and the inclined portion 75a is slid on the upper left side of the enter block 83. A movable inclined portion 83a is formed.

As shown in FIGS. 1 and 2, a laser processing head 89 for irradiating the work W with the laser beam LB is provided above the fixed table 9, and laser processing is performed by the irradiation of the laser beam LB. The laser processing position P2 is configured to be close to the punch processing position P1. Also,
A laser oscillator 91 that oscillates the laser beam LB is arranged near the press body 3, and a laser processing head 89 is optically connected to the laser oscillator 91 via a photoconductive device 93.

Next, the operation of the embodiment of the present invention will be described.

A plate-shaped work W is formed by a plurality of clampers 17.
Under the condition that the end portions of the workpieces are clamped, the pair of movable tables 11 and 13 is moved in the front-rear direction, and the carriage 19 is moved in the left-right direction, so that the work W is moved in the front-rear direction.
By moving in the left-right direction, the portion to be processed of the work W is positioned at the punching position P1. Further, the upper turret 21 and the lower turret 23 are driven by the drive of the turret servo motor.
Is rotated about the turret center S1 to position the predetermined punch 25 and the predetermined die 27 at the punching position P1.

Here, while the work W is moving or the turret (the upper turret 21 and the lower turret 23) is rotating, the upper surfaces of the plurality of dies 27 are located at a height lower than the height of the pass line. The cutout 37 is closed by the shutter 45, and the work W is supported by the protection table 33 and the shutter 45 at the height of the pass line. Further, since a large number of brushes B are planted substantially evenly on the upper surface of the protective table 33 and the upper surface of the shutter 45, the contact resistance between the protective table 33 and the work W,
Also, the contact resistance of the work W with the shutter 45 can be reduced.

Next, the shutter 45 is moved to the right by the operation of the opening / closing cylinder 49 to open the notch 37. Then, the operation of the advancing cylinder 87 moves the advancing block 83 to the left to enter the lower side of the push-up block 75, and the operation of the push-up cylinder 79 moves the push-up block 75 upward to move the predetermined die 27. The die support 61 (or 71) that supports the substrate is moved upward. As a result, the predetermined die 27 is pushed up integrally with the die holder 57 (or 65) while resisting the biasing force of the spring 59 (or 69), and the upper surface of the predetermined die 27 is passed through the pass line so as to perform punching, for example. It is possible to position the upper surface of a predetermined die 27 at a height higher than the pass line in order to perform, for example, an upward forming process. Further, when the predetermined punch 25 and the predetermined die 27 are the index punch 25 and the index die 27A, the index punch 25 and the index die 27A are moved to the mold by the operation of the mold rotation operation device 63. The direction of the index punch 25 and the direction of the index die 27A are changed by rotating around the center S2.

The striker hydraulic cylinder 31
Move the striker 29 downward by the operation of
The striker 29 presses the predetermined punch 25 from above. As a result, the predetermined punch 25 and the predetermined die 27 can be made to cooperate with each other to perform punching (punching, forming, etc.) on the portion to be processed of the work W. Further, the operation of the advancing cylinder 87 moves the advancing block 83 to the right to cause the advancing block 75 to be withdrawn from the lower side, and the operation of the advancing cylinder 79 causes the pressing force of the spring 59 (or 69) to be combined to lift the advancing block 79. By moving it downward, the upper surface of the die 27 is positioned at a height lower than the pass line.

After the upper surface of the die 27 is positioned at a height lower than the pass line, the shutter 45 is moved to the right by the operation of the opening / closing cylinder 49 to close the notch 37. The cutout portion 37 may be kept open when punching is continuously performed.

When the die 27 is to be replaced, the lower turret 23 is rotated about the turret center S1 by driving the turret servomotor to move the die 23 to be replaced under the notch 39 for replacement. Position to the side.
Then, the die 27 to be exchanged is detached from the lower turret 23 via the exchange notch 39 by a known die exchanging means (not shown), and a new die 27 is passed through the exchange notch 39. Attach it to the lower turret 23. This allows the die 27 to be replaced.

Further, in the case of performing laser processing on the plate-shaped work W, the pair of movable tables 11, under the condition that the end portions of the plate-shaped work W are clamped by the plurality of clampers 17. By moving 13 in the front-rear direction and moving the carriage 19 in the left-right direction, the work W is moved in the front-rear direction and the left-right direction, and the workpiece portion of the work W is positioned at the laser processing position P2. Then, the laser oscillator 91 oscillates the laser light LB, and the laser processing head 89 irradiates the processed portion of the work W with the laser light LB from above. Thereby, laser processing can be performed on the processed portion of the work W. here,
While the work W is moving and the laser beam LB is being irradiated, the notch is closed by the shutter 45.

As described above, according to the embodiment of the present invention, the upper surface of the plurality of dies 27 is located at a height lower than the height of the pass line while the work W is moving or the turrets 21 and 23 are rotating. Since the work W is supported at the height of the pass line by the protection table 33 above the lower turret 23, the work W is prevented from being bent and the scratches on the back surface of the work W are reduced. Can be planned. In particular, as described above, the contact resistance between the protection table 33 and the work W and the contact resistance between the work 45 and the shutter 45 can be reduced, so that the above effect is further improved.

Further, since the replacement notch 39 is provided in the protection table 33 at a position away from the punching position P1, the die 27 can be easily replaced.

Further, since the notch 37 can be closed by the shutter 45 during the irradiation of the laser beam LB, even if the laser processing position P2 is close to the punching position P1, it is caused by the laser processing. It is possible to prevent the spatter and the like from scattering to the die 27, the lower turret 23 and the like through the cutout portion 37.

The present invention is not limited to the description of the embodiment of the invention as described above. For example, the turret punch press 1 to the laser processing head 89 and the laser oscillator 91 are used.
It is possible to make appropriate changes such as omitting the above.

[0051]

According to the invention described in any one of claims 1 to 6, the upper surface of the plurality of dies is higher than the height of the pass line during the movement of the work or the rotation of the turret. Since it is located at a low height and the work is supported at the height of the pass line by the protection table above the lower turret, it suppresses the work from bending and reduces scratches on the back surface of the work. Can be achieved.

According to the invention described in any one of claims 2 to 6, the contact resistance between the protective table and the workpiece and the contact resistance between the shutter and the workpiece can be reduced. Therefore, the above effect is further improved.

According to the invention described in any one of claims 4 to 6, in addition to the above effects,
Since the replacement notch is provided at a portion of the protection table which is separated from the punching position, the die can be easily replaced.

According to the invention described in claim 6, in addition to the above effect, the notch can be closed by the shutter during the irradiation of the laser beam, so that the laser processing position is the punching position. It is possible to prevent the spatter and the like generated by laser processing from scattering to the die, the lower turret and the like through the notch even when it is close to the.

[Brief description of drawings]

FIG. 1 is a plan view showing a main part of a turret punch press.

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

FIG. 3 is an explanatory diagram of the index die in a lowered state and components around the index die.

FIG. 4 is an explanatory diagram of an index die in a pushed-up state and components around the index die.

FIG. 5 is an explanatory diagram of a normal die in a lowered state and components around the die.

FIG. 6 is an explanatory diagram of a normal die in a pushed-up state and components around the die.

FIG. 7 is a side view of the turret punch press.

FIG. 8 is a plan view of a turret punch press.

[Explanation of symbols]

1 Turret punch press 21 upper turret 23 Lower Turret 25 punch 27 dies 33 protection table 37 Notch 39 Replacement notch 45 shutter 73 Push-up means 89 Laser processing head

Claims (6)

[Claims] 1. A turret punch press for punching a plate-shaped workpiece, wherein a rotatable disc-shaped upper turret and a rotatable disc-shaped lower turret are provided so as to face each other, and the upper turret is attached to the upper turret. A plurality of punches are arranged in an annular shape, a plurality of dies are arranged in an annular shape in the lower turret, and the upper turret and the lower turret are rotated around the center of the turret to punch a predetermined punch and a predetermined die. It is configured so that it can be positioned at a position, each die is configured to be movable in the vertical direction with respect to the lower turret, and a protective table that supports a plate-shaped work at the height of the pass line is provided above the lower turret. The protective table is provided with a notch near the punching position, and a shutter for opening and closing the notch is provided. When the notch is opened by this shutter, the die is positioned so that the upper surface of the die positioned at the punching position is positioned at the same height as the pass line or a height higher than the pass line. A turret punch press characterized in that it is provided with a pushing-up means. 2. The turret punch press according to claim 1, wherein a large number of brushes for supporting the work are planted substantially evenly on the upper surface of the protection table and the upper surface of the shutter. 3. The turret punch press according to claim 1, wherein at least half of the lower turret is covered by the protection table. 4. A notch for exchange for exchanging the die is provided at a portion of the protection table which is separated from the punching position.
A turret punch press according to any one of claims 1 to 3. 5. The lower turret is provided with a die support for supporting the respective dies from below in a vertically movable manner, and the pushing-up means raises the die support for supporting the dies located at the punching position. The turret punch press according to any one of claims 1 to 4, wherein the die is pushed up by moving the die in a direction. 6. A laser processing head for irradiating the work with laser light from above is provided, and a laser processing position for performing laser processing by irradiating the laser light is configured to be close to the punching position. The turret punch press according to any one of claims 1 to 5.