JP2600552Y2 - Punch press - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch press, and more particularly, to a rotatable pair of disk-shaped mold holders on which a plurality of punches and dies are mounted. The present invention relates to a punch press comprising a striker that can be moved to a position corresponding to a change in the position of the punch and die.

[0002]

2. Description of the Related Art A turret punch press is known as a punch press for processing a plate material. The turret punch press mounts a number of punches and dies near the outer periphery of upper and lower turrets rotatably provided on a frame of the turret punch press, and a lower position of a striker provided at a predetermined position on the frame so as to be vertically movable. In this configuration, a desired punch and die are indexed and positioned.

In a turret punch press, in order to mount more punches and dies on upper and lower turrets,
There is an apparatus in which a punch and a die are arranged on a double circle and a striker for pressing the punch is provided so as to be movable in the radial direction of the turret (Japanese Patent Publication No. 52-27393).

There is also known a turret punch press in which a pair of punches and dies are rotatably mounted on upper and lower turrets in order to variously change the directionality of a pair of punches and dies (US Pat. No. 4,412,469).

A turret punch press is also known in which a pair of disk-shaped mold holders are rotatably mounted on upper and lower turrets, and a plurality of punches and dies are mounted on the pair of mold holders ( U.S. Pat. No. 4,976,180).

When the direction of the plurality of punches and dies mounted on the mold holder is changed by rotating the pair of disk-shaped mold holders with respect to the upper and lower turrets, the striker is also rotated. It is rotated to position it above a desired one of the plurality of punches.

[0007] As a method of transmitting power to a rotor striker in which the striker is rotated, it is known that the striker is connected to a transmission member and a drive motor via a universal joint or a rubber joint.

[0008]

In the above-mentioned conventional power transmission method of the rotor restrictor, the universal joint can only move at a constant speed unless the operating angle is reduced to, for example, 5 degrees or less, and the angle indexing is not possible. It goes crazy.

The striker must be electrically insulated to detect a strip error. Therefore, it is necessary to insulate many parts if it is a universal joint. Also, the rotary striker distributes pulses to the C-axis and has the same gear ratio as the C-axis because it needs to rotate each time.
As a result, the rotation of the power transmission unit becomes faster ^, for example, 2160 Rp ^{, m} .

[0010] In the case of a rubber joint among the power transmission methods of the rotary striker, there is a problem that the operation angle must be within 1 degree and a large amount of space is required.

[0011]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a moving positioning device for moving and positioning a workpiece to be processed, and a plurality of punches and dies for processing the workpiece, which are vertically opposed. Upper and lower mold holders, a vertically movable ram, a rotator provided horizontally rotatably below the ram, and a plurality of punches supported by the mold holder. A punch press including a striker provided on the lower surface of the rotating body so as to be movable in a radial direction of the rotating body to press each punch and a rotating device for rotating the rotating body horizontally. The rotating device is provided with a shaft provided with a gear meshed with a gear provided on an outer peripheral surface of the rotating body, horizontally and rotatably on the rotating body, and a driven pulley provided on the shaft, and separated from the ram. Punch The output shaft of the drive motor mounted on the frame is horizontally provided, and a drive pulley is provided on the output shaft. The drive pulley and the driven pulley are provided so that the rotation ratio thereof is 1: 1. And the drive pulley is disposed at an intermediate height position between the top dead center and the bottom dead center of the driven pulley that is vertically moved by the vertical movement of the ram.

[0012]

Referring to FIGS. 4 and 5, FIG. 4 is an explanatory front view schematically showing a punch press according to this embodiment.
FIG. 3 is a plan view schematically showing the main parts functionally and schematically.

Now, the punch press 1 has an upper frame 3
A C-shaped or gate-shaped frame 3 having a U and a lower frame portion 3L is provided.

A work table 5 for supporting a plate-like work W is provided on a lower frame portion 3L of the frame 3, and a work clamp 7 for holding the work W is provided on the frame 3. In addition, the X-axis direction (the direction orthogonal to the paper surface in FIG. 4) and the Y-axis direction (FIG.
(A left-right direction in FIG. 1) to move and position the work W. Since the configuration of the moving positioning device 9 may be the same as the configuration of the moving positioning device provided in a normal turret punch press or the like, a detailed description of the moving positioning device 9 will be omitted.

Further, upper and lower turrets 11U and 11L vertically opposed to each other are rotatably supported on the upper frame portion 3U and the lower frame portion 3L of the frame 3 via a rotating shaft 13 (see FIG. 5). . The mounting of the upper and lower turrets 11U and 11L on the frame 3 may be the same as the mounting configuration of the upper and lower turrets in a normal turret punch press. Therefore, the details of the mounting structure of the upper and lower turrets 11U and 11L will be described. Is omitted.

The upper and lower turrets 11U and 11L form a mold holder supporting portion for supporting the mold holder, and are formed in a substantially rectangular parallelepiped shape in this embodiment.
At both ends of the upper and lower turrets 11U and 11L, a pair of upper and lower disk-shaped mold holders 15U and 15L are rotatably mounted, respectively. These upper and lower mold holders 15U, 15L
On the same circle, a plurality of punches 17P and dies 17D are respectively mounted circumferentially. However, when the punch 17P and the die 17D are large in size, only one is mounted at the center of the mold holders 15U and 15L.

The work W is pressed by pressing the punch 17P.
In order to perform the punching process, a pressing device 21 having a striker 19 for pressing each of the punches 17P is provided at a predetermined position of the upper frame portion 3U of the frame 3 so as to be vertically movable.

The structure for rotating the upper and lower turrets 11U and 11L may be the same as the structure for rotating the upper and lower turrets in a normal turret punch press. In the case of the present embodiment, the upper and lower turrets 11U and 11L are rotated. Simply 18
It is only necessary to rotate by 0 °. Therefore, in the present embodiment, as shown in FIG.
The rotation shafts 13 of the U and 11L each have a pinion 23, and a rack 25 is engaged with the pinion 23.

It will be understood that the above configuration allows the upper and lower turrets 11U and 11L to be rotated by reciprocating the rack 25 by a hydraulic cylinder (not shown).

The upper and lower turrets 11U and 11L which are rotated
Upper and lower turrets 11U, 1
Positioning blocks 27 each having a tapered hole or a V-shaped groove are attached to both ends of the 1L, and the frame 3 is provided with a lock pin 29 which can be engaged with and disengaged from the tapered hole or the like of the positioning block 27. Lock cylinder 31
(The mounting state of the lock cylinder 31 to the frame 3 is not shown).

Therefore, the upper and lower turrets 11U,
One appropriate mold holder 15 attached to both ends of 11L
After the U and 15L are positioned at positions corresponding to the pressing device 21, the upper and lower turrets 11U and 11L can be fixed.

In order to rotate the upper and lower turrets 11U and 11L mounted on the upper and lower turrets 11U and 11L with respect to the upper and lower turrets 11U and 11L, the outer peripheral portions of the upper and lower mold holders 15U and 15L are provided. Worm gear 33
U, 33L, and the worm gears 33U, 3
Worms 35U, 35L rotatably supported by upper and lower turrets 11U, 11L mesh with 3L.

The worm shafts 37U, 37L of the worms 35U, 35L are connected to the upper and lower turrets 11U, 11L.
The clutch pawls 39U and 39L are attached to the ends of the outer sides.

In order to rotate the mold holders 15U, 15L via the worms 35U, 35L, a servo motor 41 is mounted on the frame 3 (details of the mounted state are not shown). An upper drive belt 45U and a lower drive belt 45L are wound around a double drive pulley 43 provided in interlocking connection with the drive pulley 41.

The upper and lower drive belts 45U and 45L are
The upper and lower driven belts 45U and 45L are respectively suspended around upper and lower driven pulleys 47U and 47L, and
Are provided with tension by a plurality of tension pulleys 49 attached to the respective members.

The upper and lower driven pulleys 47U and 47L are
The pulleys 47U, 47L are provided at positions corresponding to the upper and lower worms 35U, 35L.
1U and 51L are spline-fitted with clutch claws 53U and 53L which can be disengaged from and disengaged from the clutch claws 39U (39L) so as to be movable in the axial direction.

The rotation shaft 37 of the worms 35U and 35L
U and 37L, the frame 3 is provided with clutch cylinders 55U,
55L is attached, and the clutch cylinder 55U,
Shifter arms 57U, 57L engaged with the outer peripheral grooves of the clutch claws 53U, 53L are attached to a piston rod provided reciprocally at 55L.

With the above configuration, the clutch cylinder 55
By operating U, 55L, each clutch pawl 39U,
The engagement and disengagement of the clutch mechanism 59 composed of 39L; 53U and 53L can be performed.

Therefore, the upper and lower mold holders 15U and 15L can be simultaneously rotated in the same direction by controlling and driving the servo motor 41 in a state where the clutch mechanism 59 is connected. 1
A desired punch 17P and die 17D mounted on 5L can be indexed and positioned at a position corresponding to the striker 19 in the pressing device 21.

Further, the connection of the clutch mechanism 59 is released, and the upper and lower turrets 11 by the lock pin 29 are released.
By releasing the fixing of the U and 11L, the upper and lower turrets 11U and 11L can be rotated, and the other mold holders 15U and 15L can be positioned at positions corresponding to the pressing device 21.

As will be understood, the upper and lower turrets 1
Upper and lower mold holders 15U, 15L for 1U, 11L
Can be arbitrarily rotated.
As shown in FIG. 6, the directionality (longitudinal direction) of the processing portion P (only one is illustrated for convenience of explanation) of the punch 17P and the die 17D mounted on 5U, 15L is, for example, in the X-axis direction. At one time, when the mold holders 15U and 15L are rotated by 90 degrees in an appropriate direction, the directionality of the processing portion P changes in the Y-axis direction as shown in FIG. 7, and the positions of the punch 17P and the die 17D are changed. Are positions shifted by 90 ° in phase.

That is, the mold holders 15U, 15L
By appropriately rotating the punch 17P and the die 17
The direction of D can be changed. In this case, when the upper and lower mold holders 15U and 15L are rotated to change the directionality of the punch 17P and the die 17D, the punch 17P and the die 1 are rotated.
The position of 7D changes.

Therefore, when the workpiece W is machined by changing the directionality of the punches 17P and 17D in various ways, the position of the striker 19 in the pressing device 21 corresponding to the position change of the punch 17P and the die 17D. Need to be changed.

Therefore, in this embodiment, the striker 19 can be changed to various positions.

That is, a ram 61 (see FIG. 4) vertically moved by an eccentric shaft mechanism or a fluid pressure cylinder mechanism is provided on the frame 3 so as to be vertically movable, similarly to a normal punch press. The pressing device 21 is attached to a lower portion of the ram 61, and the striker 19 provided in the pressing device 21 is provided to be able to change its position.

More specifically, as shown in FIGS. 1, 2 and 3, the ram 61 is mounted on a ram guide 63 provided at a lower portion of the upper frame 3U so as to be vertically movable. A casing 65 is integrally attached to a lower portion of the ram 61 with a plurality of bolts 67. A rotating body 69 is rotatably supported in the casing 65, and a worm gear 71 is provided on a lower outer peripheral surface of the rotating body 69.
The worm 73 is engaged with the worm gear 71. A fluid passage for air blow is formed in the casing 65, the rotating body 69, and the striker 19.

On the lower surface of the rotating body 69, a guide member 75 extending in the left-right direction in FIG.
A and 75B are integrally attached with a plurality of bolts. A block 77 supporting the striker 19 is movably supported by the guide members 75A and 75B.

The support block 77 is connected to the guide member 75.
2 and 3, the guide member 75B is provided with a moving cylinder 79 as shown in FIG. The distal end of a piston rod 81 mounted on the moving cylinder 79 is appropriately connected to the slider block 77 via a support plate 83.

When the moving cylinder 79 is operated and the piston rod 81 is contracted to the right in FIG. 2, the slider block 77 is guided by the guide members 75A and 75B via the support plate 83, and the structure shown in FIG. At the right side, the striker 19
2 and 3 indicate the positions indicated by solid lines, that is, the center positions of the mold holders 15U and 15L, and from the position of the punch 17P when only one large-sized punch 17P is mounted at the center position of the mold holder. The position of the two-dot chain line, that is, as shown in FIGS.
The punch 17P and the die 17D are moved to the position of the punch 17P when the plurality of punches 17P and the dies 17D are circumferentially mounted on 5L.

In order to detect the position of the striker 19, that is, the position of the solid line and the position of the two-dot chain line, an L-shaped bracket 85 is attached to the left side of the casing 65 in FIG. Are provided with proximity sensors 87A and 87B. On the other hand, FIG.
As shown in FIG. 1, a detection plate 89 extending in the left-right direction in FIG. 1 is attached to the slider block 77. The detection plate 89 has a non-detection hole 89H having a substantially triangular shape. And a dog 91A is provided.

With the above configuration, when the striker 19 is at the position indicated by the solid line, it is detected by the proximity sensor 87A and the dog 91A. When the striker 19 is at the position indicated by the two-dot chain line and is turned, the proximity sensor 87A is detected. And at the edge of the non-detection plate 89.

As shown in FIG. 2, the worm 73 has a worm shaft 93 extending vertically in FIG.
The driven pulley 95 is fitted to the tip (the upper end in FIG. 2) of the worm shaft 93.

On the other hand, as shown in FIGS. 1 and 2,
A motor base 97 is attached to a lower surface of the upper frame 3U with a plurality of bolts 99. The motor base 9
7, a drive motor 101 is mounted, and a drive pulley 105 is fitted to an output shaft 103 of the drive motor 101. A belt 107 is wound around the driving pulley 105 and the driven pulley 95.

With the above configuration, when the drive motor 101 is driven, the drive pulley 105 is rotated via the output shaft 103. The driven pulley 95 is rotated via the belt 107 by the rotation of the driving pulley 105. further,
The striker 19 is rotated via the worm shaft 93, the worm 73, and the worm gear 71. By the rotation of the striker 19, the striker 19 is positioned above a desired punch 17P mounted on the mold holder 15U.

By moving the ram 61 up and down,
As shown in FIG. 1, the striker 19 is stroked from a top dead center, which is a position indicated by a solid line, to a bottom dead center, which is a position indicated by a two-dot chain line. Since the drive motor 101 at this time is fixed to the upper frame 3U, the drive pulley 1
As shown in FIG. 1, the driven pulley 95 is moved up and down from the position indicated by the solid line to the position indicated by the two-dot chain line with reference to 05 as a fulcrum.

The height position of the driving pulley 105 is preferably set at an intermediate position between the position indicated by the solid line and the position indicated by the two-dot chain line of the driven pulley 95. In addition, the driving pulley 10
5 and the driven pulley 95 should preferably have a rotation ratio of 1: 1. By doing so, the ram 61 can withstand high-speed rotation, and the striker 19 can be moved up and down without rotating. In addition, electrical insulation can be achieved, and assembly and maintenance can be easily performed at low cost.

The tension of the belt 107 wound around the driving pulley 105 and the driven pulley 95 is adjusted as follows.
This is performed in the middle of the stroke of the ram 61. Assuming that the tension at that time is, for example, 16 kg and the length of the belt 107 is, for example, 800 mm, the upper and lower dead centers are 800.8 mm, and the tension of the belt 107 at that time is increased by +7 kg to 23 kg. Normal belts have an appropriate tension (16
kg), the maximum tension amount (24 kg) is determined, so that the specifications are satisfied in view of the belt pitch and the stroke of the ram 61 described above.

The rotation ratio between the driving pulley 105 and the driven pulley 95 is set to 1: 1. At this time, the gear ratio between the worm gear 71 and the worm 73 is, for example, 36: 1.
Is desirable.

The present invention is not limited to the embodiment described above, but can be implemented in other modes by making appropriate changes. In the punch press of this embodiment, not only a multi-tool but also a normal tool are used.

[0050]

As will be understood from the above description of the embodiment, in the present invention, the driving pulley and the driven pulley provided on the ram are provided horizontally, and the rotation ratio is 1: 1. Since the driving pulley is located at an intermediate height between the top dead center and the bottom dead center of the driven pulley that moves up and down, the ram moves up and down compared to when the driving pulley and the driven pulley are located on the same horizontal plane. When the driven pulley is located at the top dead center or bottom dead center position, the distance between the shafts becomes large, but the increase is small and greatly affects the elongation of the belt wound around the driving pulley and the driven pulley. In addition, when the driven pulley moves to the top dead center and the bottom dead center, the driven pulley is not rotated.

Therefore, the drive pulley provided on the drive motor mounted on the frame and the driven pulley provided on the ram that moves up and down can be linked with a simple configuration.

[Brief description of the drawings]

FIG. 1 is a front view showing a main part of the present invention and showing a driving mechanism part for rotating a striker.

FIG. 2 is a view taken in the direction of the arrow II in FIG.

FIG. 3 is an enlarged view taken along a line III-III in FIG. 2;

FIG. 4 is a schematic front view of a punch press showing one embodiment of the present invention.

FIG. 5 is an explanatory plan view functionally and schematically showing main parts of the above.

FIG. 6 is an explanatory diagram of an operation when changing the directionality of a punch and a die.

FIG. 7 is an operation explanatory view of the above.

[Explanation of symbols]

 Reference Signs List 1 punch press 11U, 11L upper and lower turrets 15U, 15L mold holder 17P punch 17L die 19 striker 61 ram 69 rotating body 71 worm gear 73 worm 93 worm shaft 95 driven pulley 101 drive motor 103 output shaft 105 drive pulley 107 belt

Claims (1)

(57) [Scope of request for utility model registration] 1. A moving positioning device for moving and positioning a work to be processed, an upper and lower mold holder provided with a plurality of punches and dies for vertically processing the work, and a vertically movable ram. A rotating body horizontally rotatably provided below the ram, and a rotating body provided on the lower surface of the rotating body to press each punch corresponding to the positions of the plurality of punches supported by the mold holder. In a punch press including a striker movably provided in a radial direction of a body and a rotating device for horizontally rotating the rotating body, the rotating device includes a gear provided on an outer peripheral surface of the rotating body. A shaft provided with a gear meshed with the shaft is provided horizontally and rotatably on the rotating body, and a driven pulley is provided on the shaft, and an output shaft of a drive motor mounted on a frame of a punch press separated from the ram is horizontally moved. Setting And a drive pulley is provided on the output shaft. The drive pulley and the driven pulley are provided so as to have a rotation ratio of 1: 1. A belt is wound around both pulleys. A punch press, wherein the driving pulley is arranged at an intermediate height position between a top dead center and a bottom dead center of the driven pulley to be moved.