JPH07214194A - Punch press - Google Patents

Abstract

PURPOSE:To execute the positioning of a punch and a die to the upper part of a striker in a short time and to execute a desired punching with the indexed metallic mold by turning a metallic mold holder, engaging a punch head with the striker and turning. CONSTITUTION:The upper and the lower metallic mold holders 15U, 15L can simultaneously be turned in the peripheral direction by control-driving a servomotor 41 in the condition of connecting clutch mechanism 59. The desired punch 17P and die 17D fitted to the upper and the lower metallic holders 15U, 15L can be indexed and positioned to the desired position corresponding to the striker 19 in a hitting device. By this method, the index of plural punches 17P is executed in a short time and the punching work can be executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch press in which a plurality of punches radially mounted on the outer periphery of a die holder are rotatable.

[0002]

2. Description of the Related Art Conventionally, as a punch press in which a plurality of punches radially mounted on the outer periphery of a die holder are rotatable, Japanese Unexamined Patent Publication No. 5-212462, U.S. Pat.
S, P5048, 385 and the like are known.

[0003]

By the way, of the above-mentioned conventional punch presses, in JP-A-5-212462, the striker that strikes the punch is of a size that can strike a normal tool. When attempting to hit a multi-tool in which a large number of small punches are arranged on the circumference, even the adjacent punches may hit the striker, resulting in unnecessary machining.

In U, S, P, 5048 and 385, the striker is first positioned at the origin, the small punch is selected, and then the entire die holder is punched by changing it to a desired angle. There was a problem that the selection speed was slow.

The object of the present invention is to rotate the die holder and to rotate the die by engaging the punch head with the striker to index the selected punch to an arbitrary angle and to position the striker above the striker. It is to provide a punch press capable of positioning in a short time.

[0006]

In order to achieve the above object, a punch press of the present invention is provided with one of a pair of disc-shaped die holders rotatably supported by a die holder supporting portion provided in the punch press. A plurality of dies are mounted on, and a plurality of dies for working on a plate-shaped work in cooperation with the respective punches are mounted on the other die holder, and a striker for pressing each punch is provided. In addition to being provided on a rotating body that is rotatably mounted on a ram that is reciprocally movable in a punch press,
A plurality of vertically movable punches are radially provided on an index guide provided on the die holder so as to be vertically movable, and a retainer plate member is interposed in the index guide. A punch driver that can be moved up and down, a groove that engages with the head of the punch is provided on the circumference of the lower surface of the punch driver, and a punch that can hit only one of the plurality of punches is provided. A punch through hole is provided radially above the groove at a location other than the hitting portion, and an engaging portion for engaging and disengaging the striker is provided at the punch head provided above the punch driver. It is a feature.

In the punch press, the engaging portion is an engaging groove, an origin pin is provided inside the upper portion of the die holder, and the origin pin is engaged with and disengaged from a groove provided on the outer periphery of the retainer plate member. It is desirable that the ram is provided so that the ram can be moved up and down by a fluid cylinder.

[0008]

[Operation] By using the punch press as described above,
The striker and the punch driver are rotated together by rotating the die holder with respect to the die holder supporting portion and engaging the striker with the engaging portion provided on the punch head. Therefore, only the selected punch can be indexed to the position below the striker at an arbitrary angle in a short time.

[0009]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 6 is a front view schematically showing the punch press according to this embodiment, and FIG. 7 is a plan view schematically and functionally showing main parts.

6 and 7, the punch press 1 includes a C-shaped or gate-shaped frame 3 having an upper frame portion 3U and a lower frame portion 3L.

A work table 5 for supporting a plate-shaped work W is provided on the lower frame portion 3L of the frame 3, and the frame 3 is provided with a work clamp 7 for holding the work W. In addition, the X-axis direction (direction orthogonal to the paper surface in FIG. 6) and the Y-axis direction (FIG. 6)
In the left and right direction) to position the work W. Since the structure of the moving positioning device 9 may be the same as the structure of the moving positioning device provided in a normal turret punch press or the like, 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 by the upper frame portion 3U and the lower frame portion 3L of the frame 3 via rotary shafts 13 (see FIG. 7). . The mounting of the upper and lower turrets 11U and 11L on the frame 3 may be the same as the mounting structure of the upper and lower turrets in a normal turret punch press, and 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 in the present embodiment, they are formed in a substantially rectangular parallelepiped shape.
A pair of upper and lower disk-shaped mold holders 15U and 15L are rotatably mounted on both ends of the upper and lower turrets 11U and 11L, respectively. The upper and lower mold holders 15U and 15L
A plurality of punches 17P and dies 17D are circumferentially mounted on the same circle.

The workpiece 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 punch 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, 11L may be the same as the structure for rotating the upper and lower turrets in a normal turret punch press, but in the case of this embodiment, the upper and lower turrets 11U, 11L are rotated. Simply 18
All you have to do is rotate 0 °. Therefore, in this embodiment, as shown in FIG.
Each of the U and 11L rotary shafts 13 is provided with a pinion 23, and a rack 25 is meshed with the pinion 23.

With the above structure, it will be understood that the upper and lower turrets 11U and 11L can be rotated by reciprocating the rack 25 by a fluid pressure cylinder (not shown).

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

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

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

The worm shafts 37U and 37L of the worms 35U and 35L are the upper and lower turrets 11U and 11L, respectively.
Of the clutch claws 39U and 39L are attached to the ends thereof.

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 mounting state are not shown). An upper drive belt 45U and a lower drive belt 45L are wound around two drive pulleys 43 provided in interlocking connection with 41.

The upper and lower drive belts 45U and 45L are
The upper and lower driven pulleys 47U and 47L are respectively wound around, and the upper and lower drive belts 45U and 45L are attached to the frame 3
Tension is applied by a plurality of tension pulleys 49 attached to each.

The upper and lower driven pulleys 47U and 47L are
The rotary shaft 5 of each driven pulley 47U, 47L is provided at a position corresponding to the upper and lower worms 35U, 35L.
Clutch claws 53U and 53L that can be engaged with and disengaged from the clutch claw 39U (39L) are spline-fitted in the 1U and 51L so as to be movable in the axial direction.

Rotating shaft 37 of the worms 35U, 35L
In order to engage and disengage the clutch pawls 53U, 53L with respect to the clutch pawls 39U, 39L provided on the U, 37L, the frame 3 has a clutch cylinder 55U,
55L is attached to this clutch cylinder 55U,
Shifter arms 57U and 57L engaged with the outer peripheral grooves of the clutch pawls 53U and 53L are attached to a piston rod reciprocally provided on the 55L.

With the above structure, the clutch cylinder 55
By operating U and 55L, each clutch pawl 39U,
The clutch mechanism 59 composed of 39L; 53U and 53L can be engaged and disengaged.

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

Further, the clutch mechanism 59 is disconnected, and the upper and lower turrets 11 by the lock pin 29 are connected.
By releasing the fixing of 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 the positions corresponding to the pressure device 21.

As shown in FIG. 4, the frame 3 is provided with a ram 61 which can be moved up and down, preferably by a fluid pressure cylinder mechanism, as shown in FIG. The hammering device 21 is attached to the lower portion of the ram 61, and the striker 19 provided in the hammering device 21 is provided so that its position can be changed.

More specifically, as shown in FIGS. 4 and 5, the ram 61 is mounted on a ram guide 63 provided in the lower portion of the upper frame 3U and is vertically movable. A casing 65 is integrally attached to the lower portion of the ram 61 with a plurality of bolts 67. A rotary body 69 is rotatably supported in the casing 65, and a worm gear 71 is formed on the lower outer peripheral surface of the rotary body 69. A worm 73 is meshed with the worm gear 71. The casing 65 and the rotating body 6
9. Inside the striker 19, a fluid passage for air blow is formed.

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

The support block 77 is attached to the guide member 75.
In order to move in the left-right direction in FIGS. 4 and 5 along A and 75B, the guide member 75B is provided with a moving cylinder 79 as shown in FIG. The tip 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.

With the above construction, when the moving cylinder 79 is operated and the piston rod 81 is contracted to the right in FIG. 5, the slider block 77 is guided by the guide members 75A and 75B through the support plate 83, and the slider block 77 is guided. By sliding to the right at the striker 19
Will be positioned at the positions indicated by the solid lines in FIGS. 4 and 5, that is, at the center positions of the mold holders 15U and 15L and the positions of the two-dot chain glands.

As shown in FIG. 5, the worm 73 has a worm shaft 85 extending vertically in FIG.
The driven pulley 87 is fitted to the tip (upper end in FIG. 5) of the worm shaft 85.

On the other hand, as shown in FIG. 5, a motor base 89 is attached to the lower surface of the upper frame 3U by a plurality of bolts 91. A drive motor 93 is attached to the motor base 89.
A drive pulley 97 is fitted to the output shaft 95 of the No. 3.
A belt 99 is wound around the drive pulley 97 and the driven pulley 87.

With the above structure, when the drive motor 93 is driven, the drive pulley 97 is rotated via the output shaft 95. The rotation of the drive pulley 97 causes the driven pulley 87 to rotate via the belt 99. Further, the striker 19 is rotated via the worm shaft 85, the worm 73, and the worm gear 71. This striker 19
Is rotated to position the punch 17P above the desired punch 17P mounted on the die holder 15U.

As shown in FIG. 1, the die holder 15U has an index guide 101 which can move up and down.
Is installed. A key groove 103 is formed on the outer circumference (right side in FIG. 1) of the index guide 101, and a key 105 provided on the mold holder 15U is engaged with the key groove 103. The flange 107F of the retainer plate 107 is mounted on the upper end flange portion 101F of the index guide 101.
Top flange 101F of the index guide 101
A lifter spring 109 is interposed between and the step portion of the mold holder 15U.

As shown in FIG. 2, on the circumference of the index guide 101, for example, 10 punches 17P (17P _{1 to} 17P ₁₀ ) are mounted at appropriate intervals, and each punch 17P is mounted. Is an interposed spring 11
It is biased upward by 1. A lower punch driver 113 and an upper punch driver 115 are provided between the index guide 101 and the retainer plate 107, and the lower punch driver 109 and the upper punch driver 111 are connected by a connecting pin 117.
Moreover, it is fixed with bolts 119.

A spring 1 is provided at the axial center of the lower punch driver 113 and the index guide 101.
It is attached with a bolt 123 with 21 interposed.

The upper driver 115 has a key 125.
The key 125 is engaged with a key groove 127 formed on the inner circumference of the retainer plate 107. Further, the flange portion 1 of the retainer plate 107
A key groove 129 is formed on the outer periphery (right part in FIG. 1) of 07, and the key holder 129 is formed in the key groove 129.
An origin positioning pin 131 provided on the upper part of 5U is provided so as to be disengageable.

A punch head 135 is attached to the upper part of the upper punch driver 115 by a plurality of bottles 133, and a stripper spring 137 is interposed between the punch head 135 and the retainer plate 107. Further, on the upper surface on the left side in FIG. 1 of the pan head 135, the engagement groove 13 with which the striker 19 is engaged is formed.
9 is formed.

A groove 141 that engages with each of the punches 17P is formed on the circumference of the lower surface of the lower punch driver 113. The groove 141, for example, the punch 1 in FIG.
The upper part of 7P ₁ is a hitting part 143 for hitting the punch 17P, and the punches 17P ₂ other than the punch 17P ₁
A punch through hole 145 is formed in a T-shaped groove 141 portion where 17P ₁₀ is located, for example. Backup pins 147 mounted radially on the retainer plate 107 are radially inserted into the holes 145 at the same pitch as the punch 17P. A spring 149 is interposed in the retainer plate 107 above each backup pin 147.

With the above structure, in the state shown in FIG. 1, for example, the striker 19 is lowered to engage the striker 19 with the engaging groove 139 of the punch head 135. When the striker 19 is further lowered, the punch head 135 is resisted against the biasing force of the stripper spring 137.
₁ and the hitting portion 143 contacts the head of the back punch 17P ₁ and the backup pin 147 is inserted into the punch through hole 145 and the head of the punch 17P ₂ to 17P ₁₀ is inserted as shown on the right side of FIG. Abut.

Further, when the striker 19 is lowered,
The index guide 101 descends against the urging force of the lifter spring 109, and each punch 17P abuts on the work mounted and fixed on the die 17D. Striker 19
When is further lowered, the hitting part 141 causes the punch 17P ₁
Punch 17P ₁ causes spring 111 to
Since it descends against the biasing force of, the work is punched.

At this time, the punches 17P _{2 to} P ₁₀ are not compressed and are not punched because the springs 111 and 149 only compress. Therefore, punch 17P
Only ₁ operates, punch 17P ₂ to P ₁₀ is not actuated. As described above, one of the desired punches 17P among the punches 17P1 to P10 is inserted into the die holder 15U.
By rotating the to position at a position below the hitting portion 143, it is possible to perform punching processing on the work with the desired punch 17P.

For example, the punch 1 shown in FIG.
An operation of indexing 7P ₄ and punching a work with the punch 17P ₄ will be described.

As shown in FIG. 3A, the mold holder 15U and the striker 19 (position indicated by the dotted line) are positioned at the origin position. The striker 19 is lowered to engage with the engaging groove 139 of the punch head 135. From this state, the lifter spring 109 is pushed down until the origin pin 131 is further disengaged from the key groove 129. In this state, the punch head 135, the retainer plate 107 and the upper and lower punch drivers 115, 113 are rotatable together with the striker 19. In addition, the index guide 101 is a key 105 and is made in the same body as the mold holder 15U, and can be rotated by the rotation of the worm gear 33U.

By rotating the worm gear 33U, for example, the punch 17P ₄ is moved from the position indicated by the dotted line in FIG.
Punch 1 is rotated by angle α to the solid line position in (B).
Index so that 7P ₄ faces the desired angle. At the same time, the rotary body 69 is rotated to rotate the striker 19 from the position indicated by the dotted line in FIG. 3 (A) to the position indicated by the alternate long and two short dashes line in FIG. 3 (B) by an angle β, so that the striker is positioned above the punch 17p _4. 19 is indexed. As a result, the X and Y axes are corrected by the rotation angle.

In this state, the striker 19 is further lowered to punch the work with the punch 17P ₄ . Then, the state is returned to the above state, and the above-described operations 1 to 3 are repeated a predetermined number of times. , The die holder 15U and the striker 19 are returned to the origin and the striker 19 is raised to replace the punch 17P and the die 17D.

When the striker 19 is raised, the index guide 101, the upper and lower punch drivers 115, 113, the retainer plate 107 and the punch head 135 are raised by the lifter spring 109, and the origin pin 131 is engaged with the key groove 129. , Mold holder 15
U, the index guide 101, and the retainer plate 107 become the same body. That is, the engagement groove 139 of the punch head 135 is at the origin position, and the striker 19 is always engaged with the engagement groove 139 at the next punching process.

Thus, the rotatable mold holder 15U
A plurality of punches 17P are mounted on the circumference of the striker 19, and a striker 19 is rotatably provided.
By engaging the punch head 135 with the punch head 135, the punch 17P selected from the plurality of punches 17P can be indexed in a short time to perform punching.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes. For example, the origin pin 131
The entry and exit may be performed by an air cylinder or the like.

[0052]

As can be understood from the above description of the embodiments, according to the present invention, the die holder is rotated, and the punch head and the striker are engaged and rotated. The selected punch can be indexed at an arbitrary angle, and the punch can be positioned above the striker in a short time, and desired punching can be performed with the indexed die.

[Brief description of drawings]

FIG. 1 is an enlarged front sectional view showing a main part of the present invention and a punch and a die part mounted on a mold holder.

FIG. 2 is a view on arrow II in FIG.

FIG. 3 is an operation explanatory diagram of performing punching by indexing desired punches.

FIG. 4 is an enlarged view taken along line IV-IV in FIG.

FIG. 5 is a plan view of a drive mechanism portion for rotating the striker.

FIG. 6 is a schematic front view showing the punch press according to the embodiment of the present invention.

FIG. 7 is an explanatory plan view functionally and schematically showing the main part of the above.

[Explanation of Codes] 1 punch press 11U, 11L (die holder support) 15U, 15L die holder 17P, 17P _{1 to} 17P ₁₀ punch 17L die 19 striker 61 ram 69 rotating body 71 worm gear 73 worm 101 index guide 107 retainer Plate 113 Lower punch driver 115 Upper punch driver 129 Key groove 131 Home positioning pin 135 Punch head 139 Engagement groove (engagement part) 141 Groove 143 Tapping part 145 Punch exit hole 147 Backup pin

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display location B30B 15/18 E 8718-4E

Claims (4)

[Claims] 1. A plurality of punches are attached to one of a pair of disc-shaped die holders rotatably supported by a die holder supporting portion provided in a punch press, and plate-like members are cooperated with the punches. A plurality of dies for processing the workpiece are attached to the other die holder, and a striker for pressing each punch is rotatably attached to a ram reciprocally movable in the punch press. And a plurality of vertically movable punches are radially provided on an index guide provided on the die holder so as to be vertically movable, and a retainer is provided in the index guide. A punch driver that can move up and down is provided through a plate member, and a groove that engages with the head of the punch is provided on the circumference of the lower surface of the punch driver, and the plurality of pan drivers are provided. A punching portion capable of striking only one of the punches is provided, and punch through holes are radially provided above the groove at a portion other than this striking portion, and the striker is provided on the punch head provided above the punch driver. A punch press, comprising an engaging portion for engaging and disengaging the punch press. 2. The punch press according to claim 1, wherein the engaging portion is an engaging groove. 3. The origin pin is provided inside the upper portion of the mold holder, and the origin pin is detachably provided in a groove provided on the outer periphery of the retainer plate member. Punch press. 4. The punch press according to claim 1, wherein the ram is vertically moved by a fluid cylinder.