JP2597332Y2 - 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.

It has recently been developed to change the position of the striker (punch) with a rotary striker in which the striker is rotated.

[0008]

However, the recently developed rotor striker does not have a sensor for checking the moving position and the turning position when the striker position is changed. As a sensor for confirming the movement position and the rotation position of the striker, an electric transmission coupler as a movement position sensor and a slip ring as a rotation position sensor are known.

[0009] However, the former transmission coupler cannot be used for the rotary restrictor because of its arbitrary position on the circumference. Further, although the latter slip ring has the reliability of the detection mechanism itself, it becomes large in space, is weak against oil and dirt, and is easily broken in a place where an impact load such as a striker is applied, making it difficult to use.

An object of the present invention is to provide a punch press capable of withstanding a heavy load at a striker portion and reliably detecting a striker position of a rotor striker irrespective of a rotation angle in order to solve the above problem. Is to do.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a single die mounted on one of a pair of disk-shaped die holders rotatably supported by a die holder support provided in a punch press. Alternatively, one or more dies for mounting a plurality of punches and working on a plate-shaped work in cooperation with each of the punches are mounted on the other mold holder, and a striker for pressing each of the punches is provided. Is provided on a rotating body rotatably mounted on a casing provided on a ram provided reciprocally on a punch press, and is provided so that its position can be adjusted in the radial direction of the rotating body, while being rotatably mounted on a striker with each other. A detection plate having a non-detection hole and a detection member on the other side, and a detection plate having a freely rotatable center in a substantially central portion is provided in the casing, and the detection plate corresponding to the non-detection hole and the detection member in the casing; To constitute a punch press by a detection sensor is provided at a position Les.

[0012]

When the pair of disk-shaped mold holders is rotated by employing the punch press of the present invention, the direction of the punch and the die mounted on the mold holder can be changed.
For example, when the die and the die are rotated by 90 ° while the punch and the die have a direction in the X-axis direction, the direction of the punch and the die is changed to the direction in the Y-axis direction. You. Here, a plurality of punches,
In the case of a mold holder in which a die is circumferentially mounted, the position of each punch and die is changed to a position shifted by 90 ° in the radius of the mold holder.

[0013] A striker for pressing a desired punch among the punches mounted on the mold holder can cope with a change in the position of the punch by rotating a rotating body mounted on a casing provided on a ram. Since the position can be changed to the position, even when the directionality of the punch and the die is variously changed by the rotation of the mold holder, the punch can be pressed with the striker, and the punch and the die can be variously changed. The plate material can be processed by adjusting the directionality.

The striker is moved up and down via a rotating body mounted on a casing provided on the ram by the up and down movement of the ram. When the striker presses the punch located at the center of the mold holder, the striker is positioned above the punch at the center of the mold holder by the detection member provided on the detection plate and the detection sensor corresponding to the detection member. Is reliably detected. When a given punch on the outer periphery of the mold holder is pressed, the striker moves in the radial direction of the rotating body and rotates, and the detection plate moves and rotates with the movement and rotation of the striker. Moving, the edge of the non-detection hole of the detection plate and another detection sensor provided on the casing reliably detect that the striker is at a position above any punch provided on the outer peripheral portion of the mold holder. You.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings.

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

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-shaped 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 which are 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 rotary 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 constitute 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 15D.

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 11U and 11L in a normal turret punch press, but in the case of this embodiment, the upper and lower turrets 11U and 11L are rotated. , 1
It is sufficient to simply rotate 1L by 180 °. Therefore, in the present embodiment, as shown in FIG. 5, the upper and lower turrets 11U and 11L are provided with pinions 23 on the rotating shafts 13, respectively, and a rack 25 is engaged with the pinions 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).

Rotated upper and lower turrets 11U and 11L
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.

The upper and lower turrets 11U and 11L mounted on the upper and lower turrets 11U and 11L are rotated with respect to the upper and lower turrets 11U and 11L. 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 rotating shaft 37 of the worm 35U, 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, by controlling and driving the servomotor 41 with the clutch mechanism 59 connected, the upper and lower mold holders 15U, 15L can be simultaneously rotated in the same direction. 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 are
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 already 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 work W is processed by variously changing the directionality of the punch 17P and the die 17D, the striker 19 of the pressing device 21 is changed in accordance with the position change of the punch 17P and the die 17D. Need to change position.

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

That is, the frame 3 is provided with a ram 61 (see FIG. 4) which can be moved up and down by an eccentric shaft mechanism or a fluid pressure cylinder mechanism in the same manner as 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.

A guide member 75 extending in the left-right direction in FIG.
A and 75B are integrally attached by a plurality of bolts. A slider block 77 supporting the striker 19 is movably supported by the guide members 75A and 75B.

The slider block 77 is connected to the guide member 7.
2 and 3, the guide member 75B is provided with a moving cylinder 79, as shown in FIG.
The piston rod 81 attached to the moving cylinder 79
Is connected to the slider block 77 via a support plate 83 as appropriate.

When the moving cylinder 79 is operated and the piston rod 81 is expanded and contracted in the left-right direction in FIG. 2, the slider block 77 is guided by the guide members 75A and 75B via the support plate 83. The striker 19 is slid in the left-right direction in FIG. 2, so that the striker 19 is positioned at a solid line in FIGS.
The position of the two-dot chain line from the position of the punch 17P when only one large size punch 17P is mounted at the center position of the mold holder, which is the center position of the mold holders 15U and 15L, that is, FIGS. As shown in FIG. 7, the punches 17P and 17D are moved to the positions of the punches 17P when the plurality of punches 17P and 17D are circumferentially mounted on the mold holders 15U and 15L.

As shown in FIG. 3, the worm 73 is mounted on a worm shaft 85 extending in a direction perpendicular to the plane of FIG.
A driven pulley 87 is fitted to the end (the upper end in FIG. 2) of the fifth pulley 5. On the other hand, a drive motor is attached to the upper frame 3U of the frame 3. The drive pulley connected to the drive motor and the driven pulley 87 are wound around a belt.

According to the above configuration, when the driving motor is driven, the driven pulley 87 is rotated via the driving pulley and the belt. By the rotation of the driven pulley 87, the rotating body 69 is rotated via the worm shaft 85, the worm 73, and the worm gear 71, and the striker 19 is rotated. The rotation of the striker 19 causes the mold holder 15 to rotate.
The striker 19 is positioned above the rotation indexing position of the desired punch 17 mounted on the U.

Therefore, when pressing the punch P mounted at the center position of the mold holder 15U, the striker 19 is located at the position of the solid line shown in FIGS. Can be pressed. Mold holder 15
When pressing the desired punch P mounted on the outer circumference of the U, the striker 19 is positioned at the position indicated by the two-dot chain line and rotated as shown in FIGS. As a result, the punch P is positioned above the desired punch P, and the desired punch P can be pressed.

As shown in FIGS. 1 and 2, one end of a detection plate 89 is attached to the striker 19, and the detection plate 89 is moved leftward in FIGS. 1 and 2 from the position of the striker 19. The other end is stretched. This detection plate 89
The striker 19 slides in the striker mounting hole of the detection plate 89 and rotates.

The detection plate 89 has a slide slit 91.
A fulcrum block 93 is attached to the lower end of the casing 65 in the slide slit 91. The fulcrum block 93 is engaged with the slide slit 91 and guides the slide slit 91. This fulcrum block 93 is striker 1
When the guide and the striker 19 for shifting the detection plate 89 when the 9 is shifted in the radial direction are shifted outward, when the rotation of the rotating body 69 is indexed in the circumferential direction, the detection plate 89 Is a turning center when turning. Moreover, a dog 95 is attached to the detection plate 89.
And, for example, approximately 3 similar to the outer shape of a rotary engine
An angular non-detection hole 97 is provided.

An L-shaped bracket 99 is mounted on the left side surface of the casing 65 in FIG. 1, and proximity switches 101A and 101B are provided at positions of the bracket 99 just above the dog 95 and the non-detection hole 97. Is provided. Proximity switch 101A is proximity switch 1
It is longer than 01B.

With the above configuration, when the striker 19 is at the center (the position indicated by the solid line) (when a normal tool is used), the dog 95 on the detection plate 89 is located immediately below the shorter proximity switch 101B. Striker 1
9 positions can be detected. The other longer proximity switch 101A does not operate (is not detected) because it is in the non-detection hole 97 of the detection plate 89.

When the striker 19 is shifted in the radial direction (when using a multi-tool), when the slider block 77 is moved by the operation of the moving cylinder 79, the striker 19 moves to the position indicated by the two-dot chain line in FIG. When the striker 19 is positioned immediately above one punch P in the mold holder 15U (multi-tool), the detection plate 89 is simultaneously moved in the same direction.

As a result, the dog 95 on the detection plate 89 is disengaged from immediately below the proximity switch 101B and does not operate (is not detected). The position of the striker 19 can be detected by locating the flat plate portion (the edge of the non-detection hole 97) instead of the non-detection hole 97 of the detection plate 89 directly below the longer proximity switch 101A.

When the striker 19 is shifted and rotated (when the multi-tool is indexed), the rotating body 69 is rotated while the striker 19 is shifted in the radial direction. At this time, the striker 19 pulls the detection plate 89, and the detection plate 89 turns around the fulcrum block 93. No matter how far the striker 19 rotates, the longer proximity switch 101A detects the flat portion of the detection plate 89 (the edge of the non-detection hole 97), so that it is possible to detect that the striker 19 is at the correct position. it can.

Therefore, when the striker 19 is rotated, it can withstand a heavy load on the striker portion, and
Regardless of the rotation angle, if the striker 19 is slightly moved from the position indicated by the two-dot chain line to the position indicated by the solid line in FIGS.
Since the non-detection hole 97 is located immediately below 1A, the position of the striker 19 can be reliably detected.

The present invention is not limited to the above-described embodiment, but can be implemented in other modes by making appropriate changes. For example, using a two-stage molding die (one punch for one process in one punch holder x 2 processes at a position shifted from the punch holder center)
When you want to change the direction and perform molding, you can shift the striker 19 while rotating the punch halter,
The correct shift position can be detected. In this case, it can also be used to process the first step at the center by rotating it first, and shift the striker 19 while rotating to process the second step.

[0056]

[Effects of the Invention] As can be understood from the description of the embodiment as described above, according to the invention, since the configuration is as described in the claims for utility model registration, it can withstand a heavy load at the striker portion. Therefore, the striker position of the rotor striker can be reliably detected regardless of the rotation angle.

[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 cross-sectional view taken along a line 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 65 casing 69 rotating body 71 worm gear 73 worm 89 detection plate 95 dog (detection member) 97 non-detection holes 101A, 101B proximity Switch (detection sensor)

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B21D 28/00 B21D 28/36

Claims (1)

(57) [Scope of request for utility model registration] A single or a plurality of punches are mounted on one of a pair of disk-shaped mold holders rotatably supported by a mold holder supporting portion provided for a punch press, and cooperate with each of the punches. One or a plurality of dies for processing a plate-shaped work were mounted on the other mold holder, and a striker for pressing each of the punches was provided on a ram provided to be able to reciprocate in the punch press. Provided on a rotating body rotatably mounted on the casing and provided so as to be able to adjust the position in the radial direction of this rotating body, on the one hand, rotatably mounted on the striker and on the other, with a non-detection hole and a detection member on the A pan provided with a detection plate having a freely rotatable rotation center in the casing, and a detection sensor provided at each position corresponding to the non-detection hole and the detection member of the casing. Chipless.