JP2773999B2 - Punch and die stocker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a punch and a die containing a punch and a die for exchanging a punch and a die mounted on, for example, an upper and lower turret of a turret punch press with an automatic die changing device. About stockers.

[0002]

2. Description of the Related Art Conventionally, for exchanging punches and dies mounted on, for example, upper and lower turrets of a turret punch press by an automatic mold exchanging apparatus, a stocker containing a punch and a die is constituted. For example, a punch holder provided with a punch and a die holder provided with a die are separately housed in a rotary plate or the like. The punch holder and the die holder are simply inserted into the turntable, or a clamp type for clamping and fixing with a cylinder or the like is used. For example, a tool holding part which is a part of an automatic die changing device is used. Generally, the punch arm and the die holder housed in the stocker are exchanged with the mold arm provided.

[0003]

By the way, in the conventional punch and die stocker described above, the desired punch,
When the die is moved to the exchange position, a displacement occurs. To prevent this displacement, a strong clamping method must be adopted, but the structure becomes complicated and the cost increases. Further, since the punch holder and the die holder are exchanged while being held by the mold arm, there is a problem that the structure of the mold arm needs to be strong.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, so that there is no displacement of the punch and die during the movement of the stocker, and the punch and die stocker has improved stop position accuracy, simplified structure and reduced cost. Is to provide.

[0005]

In order to achieve the above object, the present invention provides a stocker for supporting a plurality of punches and dies, and a plurality of mold holders for supporting the punches and dies in a detachable manner. The mold holder is provided on the stocker base, and a portion where each mold holder supports the die is provided so as to protrude from the stocker base, and a punch supporting portion for detachably supporting the punch in a vertical direction is provided on the mold holder. It provided a punch and die stocker.

[0006]

By using the punch and die stocker of the present invention, the punch and the die can be freely attached to and removed from the mold holders provided on the stocker base in the vertical direction. Then, the die and the die are exchanged by slightly withdrawing the mold holder from the stocker base. In the storage state, the mold holder is fixed on the stocker base.

For this reason, since the punch and the die are mounted on one mold holder without displacement during the exchange of the punch and the die, the structure is simple and the cost can be reduced.

[0008]

Embodiments of the present invention will be described below in detail with reference to the drawings. Since the turret punch press has a known structure, detailed illustration and description are omitted.

Referring to FIG. 20, the turret punch press 1 includes a portal-shaped frame 3 on which rotatable upper and lower turrets 5 and 7 are supported. Punches P and dies D are mounted at corresponding positions on the circumference of the upper and lower turrets 5, 7, respectively.

The upper and lower turrets 5 and 7 have a processing position 9 and a die changing position 11 for exchanging a punch P and a die D.
Is provided, and the frame 3 above the processing position 9 is provided.
In order to strike the punch P, a striker is provided so as to be vertically movable by a known driving device (not shown).

A center table 13 is fixedly arranged so as to surround the upper and lower turrets 5 and 7, and a front side table (not shown) and a rear side table 15 are provided on both sides of the center table 13 in the Y-axis direction. (In FIG. 20, obliquely left and right directions). At the left end of the front and rear side tables 15 straddling the center table 13, a carriage base 17 extending in the X-axis direction and movable in the Y-axis direction is provided.

The carriage base 17 is provided with a carriage 19 which is movable in the X-axis direction. The carriage 19 is provided with a plurality of work clamps 21 for clamping the work W. The carriage base 17 and the carriage 19 are moved in the Y-axis direction and the X-axis direction by a well-known ball screw, servo motor, or the like (not shown), but detailed description of the configuration is omitted.

By moving the carriage base 17 together with the front and rear side tables 15 in the Y-axis direction and the carriage 19 in the X-axis direction, the work W clamped by the work clamp 21 can be moved to the X position.
The workpiece W moves in the axis and Y-axis directions, and the desired position of the workpiece W is positioned at the processing position 9. The desired position of the work W is the processing position 9
When the upper and lower turrets 5 and 7 are rotated, the desired punch P and die D are indexed to the processing position 9 and
The punching process is performed at a desired position of the work W in cooperation with the punch P and the die D by the vertical movement of the striker.

In the vicinity of the frame 3 in the turret punch press 1, for example, on the right side in FIG. 20, a stocker 25 accommodating a plurality of mold holders 23 supporting replacement punches and dies is arranged. This stocker 25
A stocker base 31 is attached to a support 29 erected on the gantry 27.
Are mounted rotatably, and a plurality of the mold holders 23 are stored on a stocker base 31.

Between the stocker 25 and the mold exchanging position 11 of the turret punch press 1, there is provided a movable table 35 which is a part of an automatic mold exchanging device 33 which can reciprocate in the Y-axis direction. . A U-shaped support frame 37 constituting the moving table 35 is provided to extend in the Y-axis direction.
The support frame 37 is provided on the gantry 27, and as shown in FIG. 21, a drive shaft 39 is provided to extend in the Y-axis direction relative to the upper and lower horizontal portions of the support frame 37. . The support 41 is engaged with the drive shaft 39 provided above and below, and although not shown, the support 41 is movable in the Y-axis direction via the drive shaft 39 by a drive member. Punch exchange hand 43 and die exchange hand 4
5 are mounted so as to rotate and move up and down freely.

As shown in FIGS. 8 and 9, the moving table 35 constituting the automatic mold changing apparatus 33 has a structure as shown in FIGS.
The support pillar 41 has a spline groove 47 and a spiral groove 49 formed therein. (See FIG. 9) A block 53 supporting the punch arm 51 constituting the punch exchange hand 43 engages with the spline groove 47 and the spiral groove 49, and a block supporting the die arm 55 constituting the die exchange hand 45. 57 are engaged. This block 53,5
7 includes a rotating motor 59 and a lifting / lowering motor 61, respectively.
For example, the rotation motor 59 is mounted on the upper side of the block 53, the lifting motor 61 is mounted on the lower side, and the lifting motor 61 is mounted on the upper side of the block 57 and the rotation motor 59 is mounted on the lower side. ing.

A rotation transmitting member is provided between the support shaft 41 and the output shafts of the rotating motor 59 and the lifting / lowering motor 61 for engaging with the spline groove 47 and the spiral groove 49 provided on the support column 41. This configuration is already known, and its illustration and detailed description are omitted. For example, the rotating electric motor 59
By rotating the gear fitted in the spline groove 47 of the support column 41 via the gear portion by the
Alternatively, the die exchange hand 45 can be turned. In addition, the column 4 is supported by the lifting / lowering motor 61 via a gear portion.
By rotating the ball nut mounted on the first spiral groove 49, the punch exchanging hand 43 or the die exchanging hand 4 is rotated.
5 can be freely moved up and down.

A fixed arm 63 constituting the punch arm 51 is fixed to the block 53 by bolts or the like. A movable arm 65 is provided on the fixed arm 63 via a support member 67, and the movable arm 65 is movable by a fine amount. It has become. Further, a lock device 69 for fixing the fixed arm 63 and the movable arm 65 is provided.

Further, a punch P is provided at the tip of the movable arm 65.
And a driving member 73 for holding the gripping claw 71 in the gripping state or opening the gripping claw.
5 is provided on the fixed arm 63. Further, a support plate 79 is fixed to an upper surface of a cover 77 for shielding the drive member 73, and the vibration transmission member 8 is attached to the support plate 79.
A vibration generator 85, such as an ultrasonic vibrator, composed of a vibration source 1 and a vibration source 83, is vertically provided on the center line of the punch P gripped by the gripping claws 71.

With the above configuration, when the punch mounted on the upper turret 5 of the turret punch press 1 or the punch P stored in the stocker 25 is replaced by the punch replacement hand 43, the rotation provided on the block 53 is performed. By driving the electric motor 59 and the elevating motor 61, the gripping claw 71 at the tip of the punch arm 51 is positioned at a position where the desired punch P can be gripped. Then, the mold holder 23 housed in the stocker 35 is drawn out to a position shown by a two-dot chain line in FIG. Cylinder 75
Is operated, the punch P is gripped by the gripping claws 71 via the driving member 73, and the lifting / lowering motor 61 is driven to drive the punch P
Is pulled upward. At this time, the punch P can be pulled out smoothly by operating the vibration generator 85 to apply vibration to the punch P. The position indicated by the two-dot chain line in FIG.

When the punch P is mounted on the upper turret 5 or the mold holder 23 provided on the stocker 25, the punch P gripped by the gripping claw 71 at the tip of the punch arm 51 is moved to a desired punch mounting hole position. The rotation motor 59 and the elevating motor 61 are driven and positioned. Then, the lift motor 61 is driven to lower the punch arm 51. At this time, the vibration generator 85 is operated, and the punch P
Vibration can be applied for smooth mounting.

The block 57 has a die arm 5.
5 is fixed by bolts or the like, and a movable arm 89 is mounted on the fixed arm 87 on the supporting member 6 which is the same as that provided on the punch arm 51.
7, the movable arm 89 is movable by a minute amount. The fixed arm 87 and the movable arm 89
Is provided.

Further, on the upper surface of the movable arm 89, a die holder mounted on the lower turret 7 (the structure will be described later).
And an access device 91 for pulling out the mold holder 23 mounted on the stocker 25.
Reference numeral 1 denotes a configuration in which the in-and-out shaft 95 is moved forward and backward by a fluid-pressure operated cylinder 93. The die D pulled out by the access device 91 or the die D mounted on the die holder 23 is temporarily held by the temporary holding unit 9 provided on the movable arm 89.
7, a die attaching / detaching device 103 including an upper cylinder 99 and a lower cylinder 101 is provided above and below the movable arm 89. The die D stored in the temporary holding portion 97 is also mounted on the die holder or the mold holder 23 by the die attaching / detaching device 103.

With the above configuration, when the die exchange hand 45 exchanges a die D provided in a die holder described later mounted on the lower turret 7 of the turret punch press 1 or a die D stored in the stocker 25, , The motor 59 for rotation provided on the block 57 and the motor 6
1 is driven. Then, the movable arm 8 of the die arm 55
9 is positioned at the extraction position of the die holder 23 stored in the die holder or the stocker 25, and the cylinder 93 of the predetermined amount of the input / output device 91 is operated to move the die holder or the die holder. Pull out 23. The drawing position is a position indicated by a two-dot chain line in the drawing of FIG. 8 or FIG.

When the die holder or the mold holder 23 is pulled out, the upper cylinder 99 is operated to push the die D into the temporary holding portion 97 provided on the movable arm 89, and the die D is completely taken out.

The die D is placed in a die holder or a mold holder 2.
3, the temporary holding portion 97 of the movable arm 89
The rotation motor 59 and the elevating motor 61 are driven to position the center of the die D accommodated in the die holder 23 drawn out from the lower turret 7 or the mounting hole of the die holder 23 drawn out from the stocker base 31. . Then, the lower cylinder 101 provided on the movable arm 89 is operated to push up the die D housed in the temporary holding portion 97 toward the die holder or the mold holder 23 to complete the mounting.

Next, the punch arm 51 of the punch exchange hand 43 will be described in more detail.

Referring to FIGS. 10 to 13, this drawing shows a state in which the punch P mounted on the upper turret 5 of the turret punch press 1 is replaced.

The movable arm 65 is mounted on the fixed arm 63 of the punch arm 51 via the support member 67.
As shown in detail in FIG. 11, the configuration of the support member 67 is such that a plurality of (four in this embodiment) headed pins 105 are provided through the movable arm 65 and the fixed arm 63. . A collar 107 is provided at the lower end of the headed pin 105 so as to be adjustable in position by a set bolt 109. Further, between the movable arm 65 and the fixed arm 63,
Between the fixed arm 63 and the collar 107, a rolling member 111 fitted on the headed pin 105 is mounted. The rolling member 111 is composed of, for example, upper and lower rings 115 sandwiching a hard sphere 113. Have been.

According to the above configuration, since the movable arm 65 is mounted on the fixed arm 63 via the headed pin 105, the play between the headed pin 105 and the fixed arm 63, the movable arm 65, or the headed pin is performed. 105 and rolling member 11
Since there is a play with the first ring 115, when the punch P is pulled out from the mold holder 23 stored in the upper turret 5 and the stocker 25 due to the play, straightness can be absorbed and smooth. Can be exchanged.

Further, a lock device 69 for fixing the fixed arm 63 and the movable arm 65 is provided. The lock device 69 is provided with a cylinder 117 of a fluid pressure operation vertically provided on the lower surface of the fixed arm 63, and a piston rod 119 of the cylinder 117 is guided by a bush 121 mounted on the fixed arm 63, and It is configured to fit into the inside diameter of the mounted bush 123. Note that a tapered portion 125 is formed at the tip of the piston rod 119 to facilitate insertion of the piston rod 119 into the bush 123.

With the above configuration, when the cylinder 117 of the lock device 69 is operated, the piston rod 119 is inserted into the bush 123 provided on the movable arm 65, and the movable arm 65 is locked with respect to the fixed arm 63. The lock device 69 is operated when the punch P is inserted into the upper turret 5 or when the punch P is inserted into the hole of the mold holder 23 of the stocker 25. Is performed.

Further, a punch P is provided at the tip of the movable arm 65.
The gripping claws 71 are provided opposite to each other, and the gripping claws 71 form a V-shaped groove 127 in an inward direction as shown in FIG. A driving member 73 for driving the gripping claws 71 is provided with a hydraulically operated cylinder 75 on the upper surface of a movable arm 65, and a joint 131 provided at the tip of a piston rod 129 of the cylinder 75 is connected to a rack plate 1.
A sliding plate 135 provided with a reference numeral 33 is provided in a horizontal state. The sliding plate 135 is provided with a guide plate 137.
a, 137b guides freely forward and backward.

The rack plate 133 provided on the sliding plate 135
A pinion 139 meshing with the tooth portion is locked to a shaft 141, and the shaft 141 is rotatably suspended from the movable arm 65 via bearings 143a and 143b. A pinion 145 is engaged with the shaft 141 below the pinion 139, and a rack plate 147 is engaged with the pinion 145. The rack plate 147 is provided to face the pinion 145. Rack plate 14
7 are fixed to the gripping claws 71, respectively. Each of the gripping claws 71 is provided so as to be able to expand and contract using the guide bar 149 as a guide (see FIG. 13).

With the above configuration, when the cylinder 75 is operated to cause the piston rod 129 to protrude, for example, the sliding plate 13
5 moves forward, and the rack plate 133 also moves forward. Rack plate 13
The pinion 139 meshed by the forward movement of 3 rotates clockwise in FIG. With the rotation of the pinion 139, the pinion 145 also rotates via the shaft 141, and the rack plate 147 meshed with the pinion 145 moves in the retracting direction in FIG. 13, so that the gripping claws 71 provided with the rack plate 147 The punches P move inward each other and are gripped by the V-groove 127 of the gripping claw 71 regardless of the diameter of the gripping portion of the punch P, as indicated by the two-dot chain line in the figure. be able to.

To release the gripping claws 71 from the punch P, the gripping can be released by reversing the above operation. That is, when the piston rod 129 of the cylinder 75 is retracted, the pinion 139 rotates counterclockwise in FIG. 12 due to the retraction of the rack plate 133, and the pinion 145 also rotates in the same direction via the shaft 141. By rotating the pinion 145 in the counterclockwise direction, the gripping claws 71 can move outward from each other via the rack plate 147 and separate the gripping claws 71 from the punch P.

A cover 77 for protecting the driving member 73 is provided, and a support plate 79 is fixed to an upper surface of the cover 77. The support plate 79 has a vibration transmitting member 81 operated by a vibration source 83. For example, a vibration generator 85 such as an ultrasonic vibrator is mounted. As described above, the operation of the vibration generating device 85 is such that when the punch P is attached to or detached from the upper turret 5 of the turret punch press 1 or when the punch P is attached to or detached from the mold holder 23 of the stocker 25, vibration is applied to the punch P. It is provided for easy attachment and detachment.

Next, the die holder 151 mounted on the lower turret 7 of the turret punch press 1 will be described in detail.

Referring to FIGS. 14, 15 and 16, a large number of die holder bases 153 are fixed radially around the circumference of the lower turret 7 by bolts 155, and a plurality of dies D on the die holder base 153 are fixed. Provided die holder 151 is mounted. This die holder 15
A protruding holding portion 157 is formed on the front end side (left side in FIGS. 14 and 15) of the first member 1, and a holding block 159 that engages with the holding portion 157 is fixed to the die holder base 153.

A pin 161 for preventing floating is mounted on the rear side of the die holder 151, and the pin 161 is a projection formed on the die holder base 153, which is an engaging portion 1.
The die holder 151 is inserted into the lower part of the die 63 to prevent the die holder 151 from floating with respect to the die holder base 153. A cam 165 is rotatably mounted on the rear end side of the die holder 151, and an eccentric portion 167 of the cam 165 can be inserted into and removed from a groove 169 formed in the die holder base 153. Note that a slit 171 is formed in the cam 165 so that a part of a locking member provided at the distal end of the access shaft 95 of the access device 91 of the die exchanging hand 45 can be engaged and disengaged.

Further, at the rear end side of the die holder 151, as shown in FIG.
75 are formed. Also, die holder base 153
A contact surface 177 is formed on the rear end side, and the protrusion 179 of the die holder 151 contacts the contact surface 177 for positioning. Reference numeral 181 denotes a lid, which is provided to facilitate processing. Reference numeral 183 denotes a hole in which the die D is mounted.

The operation of the above configuration will be described with reference to FIG.

FIG. 17A shows a die holder base 153.
The state at the time of pulling out the die holder 151 locked to
The locking state described above with reference to FIG. 15 is exactly the same. In this state, the T-shaped locking member 185 provided at the tip of the access shaft 95 of the access device 91 of the die exchange hand 45 described later is inserted into the insertion groove 173 provided in the die holder 151. At this time, the locking member 185 is also inserted into the slit 171 provided in the cam 165.

Next, as shown in FIG. 17B, the inserted access shaft 95 is rotated 90 ° to the left or right. By rotating the access shaft 95, the locking member 18 is rotated.
5, the pin 187 enters the locking groove 175, and the eccentric portion 167 of the cam 165 comes out of the groove 169 and becomes free.

In this state, as shown in FIG. 17C, the pin 187 provided on the locking member 185 is locked by the locking groove 175 by moving the access shaft 95 to the right in the drawing. Therefore, the die holder 151 can be protruded from the die holder base 153 by a predetermined amount, and the die D is exchanged. Note that the die holder 151 can be locked to the die holder base 153 by performing the above operation in reverse.

For this reason, conventionally, the fixing block was pressed and fixed to the die holder with bolts, and the die holder was fixed to the lower turret. Therefore, a tool was required. However, in this embodiment, the fixing and releasing can be performed with one touch. And a pressing portion 157 and a pin 161 are provided before and after the die holder 151,
Since the floating is prevented, the number of constituent members is small and the processing can be easily performed.

Further, the die arm 73 of the die exchange hand 45 will be described in detail.

Referring to FIGS. 18 and 19, this figure shows a state in which the die D mounted on the lower turret 7 of the turret punch press 1 is replaced.

A movable arm 89 is mounted on a fixed arm 87 of the die arm 55 via a support member 67, and a lock device 69 for fixing the fixed arm 87 and the movable arm 89 is provided. Since the configuration and operation of the lock device 69 and the support member 67 are exactly the same as those provided on the punch arm 51 of the punch exchange hand 43, the same members are denoted by the same reference numerals. The description is omitted. The proximity switch indicated by reference numeral 189 detects that the lock device 69 has been operated and locked.

With the above structure, when the die D is pulled out of the lower turret 7 and the mold holder 23 stored in the stocker 25 by the play of the support member 67, the straightness can be absorbed and smooth. Can be exchanged.
Further, when the locking device 69 is operated, the die D is inserted into the lower turret 7 or the die D is inserted into the hole of the mold holder 23 of the stocker 25. Is performed.

In the access device 91, a bearing block 191 is fixed to the upper surface of the movable arm 89, and a nut case 193 is connected to the bearing block 191 via a bearing 192.
Are provided rotatably. This nut case 193
A spline nut 195 is integrally fitted with a key 196 in the inside, and the access shaft 95 having a spline groove to be inserted into the spline nut 195 is mounted on the tip (left side in FIG. 18) of the access shaft 95. A locking member 185 having a T-shape is connected thereto, and a pin 187 protrudes from the distal end side of the locking member 185.

The rear end (right side in FIG. 18) of the input / output shaft 95 is connected to a support shaft 197. A flange 199 is formed on one side of the support shaft 197, and a collar 201 is fixed to the other end by bolts 203. Have been. A thrust bearing 207 is mounted between the collar 201 and the flange 199 with the connecting plate 205 interposed therebetween, and the access shaft 95 is rotatably provided.

The other end of the connection plate 205 is provided with, for example, a fluid pressure operated cylinder 93 on a support plate 209 fixed to the upper surface of the bearing block 191, and is engaged with a tip of a piston rod 211 of the cylinder 93. It is connected to the joining member 213. A plurality of (two in this embodiment) guide rods 215 guided by the connection plate 205 are mounted on a bracket 217 erected at the end of the movable arm 89 and a bracket 219 suspended from a side surface of the cylinder 93. It is supported and laid down. The connecting plate 205 is provided with a sliding member 221, and the sliding member 221 moves while sliding on the guide rod 215, so that the connecting plate 205 can move smoothly.

When the cylinder 93 is operated and the piston rod 211 is projected, the connecting plate 2
The access shaft 95 provided with a spline groove via the shaft 05 is shown in FIG.
8 to the position shown by the solid line in the figure. That is, the pin 187 provided on the locking member 185 provided at the tip of the access shaft 95
The die holder 151 can be pulled out from the die holder base 153 by a predetermined amount. Further, the die holder 151 can be set at the old position by operating the cylinder 93 and retracting the piston rod 211.

The access device 91 is provided with a rotation device 223. The rotating device 223 is provided in the nut case 1
A pulley 225 is integrally provided on the side surface of the shaft 93, and the output shaft 23 of the electric motor 229 fixed to the pulley 225 and a bracket 227 locked on the side surface of the bearing block 191.
The chain belt 235 is attached to the pulley 233 locked to
(See FIG. 19).

With the above configuration, when the motor 229 is driven, the pulley 233, the chain belt 235, and the pulley 225 are driven.
The rotation is transmitted to the nut case 193 via the key 196, and the rotation of the nut case 193 turns the spline nut 195 provided integrally with the key 196. Spline nut 195
Is turned, the engaged input / output shaft 95 rotates, and the input / output shaft 95 is rotated.
Is rotated by a predetermined angle. Then, as described above, the output shaft 95 can be engaged with and disengaged from the die holder 151.

At the tip of the movable arm 89 (the left side in FIG. 18), a lower cylinder 101 constituting a die attaching / detaching device 103 is vertically provided. The lower cylinder 101 has a die housing 237 serving as a cylinder case.
Is temporarily formed. The die housing 237 has a piston 239 and a piston rod 241 provided integrally with the piston 239.
The end plate 243 is locked at the tip of the piston rod 241.
The outer periphery of 43 is vertically slidably mounted on the inner diameter of the hole 245 of the temporary holding portion 97.

An upper cylinder 99 constituting the die attaching / detaching device 103 is provided upright at the tip (left side in FIG. 18) of the support plate 209. In the upper cylinder 99, an end plate 249 is integrally provided at the tip of a built-in piston rod 247. The outer diameter of the end plate 249 is formed slightly smaller than the outer diameter of the die D.

When the die holder 151 is pulled out from the lower turret 7 of the turret punch press 1, the block 25 is positioned on the distal end side of the bearing block 191 for positioning.
1 is provided, and a positioning pin 2
53 are provided in the horizontal direction.

With the above configuration, the die holder base 153 provided on the lower turret 7 of the turret punch press 1 is operated by the operation of the access device 91 and the rotating device 223 described above.
After the die holder 151 having the die D to be replaced is brought into contact with the pullout positioning pin 253 and positioned, the upper cylinder 99 as the die attaching / detaching device 103 is operated, and the die D is pressed by the end plate 249 to lower the lower cylinder. 10
The die D is mounted in the temporary holding unit 97 provided in the first die. In this state, the die arm 55 of the die exchange hand 45 is rotated,
The movable table 35 is moved to the stocker 25 side, and the die D is stored in a desired mold holder 23.

FIG. 9 shows a state in which the die D is mounted on the mold holder 23 of the stocker 25. To mount the die D, the lower cylinder 101 is operated, and the die D is stored in the temporary holding portion 97 by the end plate 243. Push up die D
It is housed in a die mounting hole of the mold holder 23.

Also, the die holder 151 of the lower turret 7
When the die D held on the die arm 55 is mounted, or when the die D stored in the mold holder 23 of the stocker 25 is mounted on the die arm 55, the above-described operation is performed in reverse. Can be exchanged.

The stocker 25 is shown in FIGS. 1, 2 and 3
As shown in FIG.
Is fixed, and the column 29 is rotatably provided on the base 255 via a bearing 257. The stocker base 31 is locked to the upper end of the support 29, and a bracket 259 having a U-shaped cross section is provided radially in the circumferential direction on the upper surface of the stocker base 31. The mold holder 23 is mounted so as to be able to move in and out. Holes 261 and 263 through which the punch P can be inserted and detached from the die support portion 23b of the die holder 23 are formed.

A pulley 265 is mounted on the lower end of the support 29, and a belt 271 is wound around a pulley 269 mounted on an output shaft of an electric motor 267 provided on a base 255 and the pulley 265 to rotate. To be transmitted.

With the above configuration, when the electric motor 267 is driven, the pulley 269 rotates, and the pulley 265 rotates via the belt 271. Since the pulley 265 is fixed to the column 29, the column 29 rotates to rotate the stocker base 31, and the die holder 23 having the punch P and the die D to be replaced can be positioned at a predetermined position. .

The mold holder 23 will be described in more detail. Referring to FIGS. 4, 5 and 6, a bracket 25 having a U-shaped cross section is provided on the upper surface of the striker base 31.
9 are radially fixedly provided. The mold holder 23 is mounted on the bracket 259 so as to be able to freely move in and out, and the mold holder 23 has an L shape. The hole 263 into which the die D is inserted is formed in the vertical direction.

The structure in which the mold holder 23 is attached to and detached from the bracket 259 is constituted by mounting the die holder 151 on the die holder base 153 provided on the lower turret 7 described above.
Since the configuration is completely the same as the configuration for detachment, the same members are denoted by the same reference numerals and description thereof will be omitted.

That is, a protruding holding portion 157 is formed on the tip end side (right side in FIGS. 4 and 5) of the mold holder 23, and a holding block 159 which engages with the holding portion 157.
Are fixed to the stocker base 31 via the bracket 259 to prevent the die holder 23 from floating on the tip side. In order to prevent the rear of the mold holder 23 from floating, a pin 161 is mounted. The pin 161 is inserted into a lower portion of an engaging portion 163 which is a protrusion formed on the bracket 259, and is attached to the bracket 259. For the mold holder 23
Is prevented from rising.

The cam 16 is provided at the rear end of the mold holder 23.
The cam 165 is rotatably mounted, and the eccentric portion 167 of the cam 165 can be inserted into and removed from a groove 169 formed in the bracket 259. The cam 165 is engaged with a part of a T-shaped locking member 185 provided at the tip of the access shaft 95 of the access device 91 of the die exchange hand 45.
A detachable slit 171 is formed.

Further, at the rear end of the mold holder 23, FIG.
As shown in FIG.
5 are formed. An abutment surface 177 is formed on the rear end side of the bracket 259.
The abutment surface 179 of the mold holder 23 comes into contact with the mold holder 23 to perform positioning.

The operation of the above configuration will be described with reference to FIG.

FIG. 7A shows a state in which the mold holder 23 locked on the bracket 259 is pulled out, and FIG.
This is exactly the same as the locked state described above. In this state, the access shaft 95 of the access device 91 of the die exchange hand 45 is set.
A locking member 185 provided with a T-shaped pin 187 provided at the tip of the mold holder 23 is inserted into an insertion groove 173 provided in the mold holder 23. At this time, the slit 17 provided in the cam 165
The locking member 185 is also inserted into 1.

Next, as shown in FIG. 7 (B), the inserted access shaft 95 is rotated 90 ° to the left or right. By rotating the access shaft 95, the locking member 18 is rotated.
5, the pin 187 enters the locking groove 175, and the eccentric portion 167 of the cam 165 comes out of the groove 169 and becomes free.

As shown in FIG. 7 (C) from this state, the pin 187 provided on the locking member 185 is moved by moving the access shaft 95 to the left in the drawing.
Since it is locked by 75, the mold holder 23 can be protruded from the bracket 259 to a position where the die D can be exchanged, and the die D and the punch P are exchanged. The mold holder 23 can be locked to the bracket 259 by performing the above operation in reverse.

With the configuration described above, the punches P and dies D mounted on the upper and lower turrets 5 and 7 and the punches P and D mounted on the mold holder 23 stored in the stocker base 31 of the stocker 25 are formed. The exchange with the die D can be performed in a short time by the automatic mold exchanging device 33. Moreover, by using the stocker 25 of this embodiment, the mold holder 23 can be fixed and released to the stocker base in one touch, and the mold holder 23 is locked to the bracket 259 by the cam 165, and the mold The front and rear of the holder 23 are prevented from floating by the holding portion 157 and the pin 161, so that when the stocker 25 is moved, the punch P and the die D
, The stop position accuracy is improved, and the cost can be reduced with a simple configuration.

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

[0077]

As will be understood from the above description of the embodiment, according to the present invention, since the construction is as described in the claims, there is a possibility that the displacement occurs when the punch and the die are exchanged. Since the stop position accuracy is improved and the punch and the die are mounted on one mold holder, the structure is simplified and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 shows a stocker showing a main part of the present invention, and FIG.
FIG. 2 is a sectional view taken along line II in FIG.

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

FIG. 3 is a plan view of FIG.

FIG. 4 is an enlarged plan view of a portion viewed from an arrow IV in FIG. 3;

FIG. 5 is a sectional view taken along line VV in FIG. 4;

FIG. 6 is a side view as viewed from the left side in FIG. 5;

FIG. 7 is an operation explanatory view when the mold holder is pulled out from the stocker base.

FIG. 8 is a side view of the automatic die changing device.

FIG. 9 is an enlarged view of a portion viewed from an arrow IX in FIG. 8;

FIG. 10 is a side view showing a punch exchange hand.

FIG. 11 is a partial sectional view of FIG.

FIG. 12 is a plan view of FIG.

FIG. 13 is a sectional view taken along the line XIII-XIII in FIG. 11;

FIG. 14 is a plan view showing a die holder in a lower turret.

FIG. 15 is a sectional view taken along line XV-XV in FIG. 14;

FIG. 16 is a side view seen from the right side in FIG. 14;

FIG. 17 is an operation explanatory view when the die holder is pulled out from the die holder base.

FIG. 18 shows a die exchange hand, and XVII in FIG. 19
It is sectional drawing along the I-XVIII line.

19 is a plan view of FIG.

FIG. 20 is a perspective view of an example of a turret punch press and a stocker in which a die automatic exchanging device is reciprocally movable in the present embodiment.

FIG. 21 is a perspective view showing the automatic mold changing apparatus and the stocker in FIG. 20;

[Explanation of symbols]

 23 Mold Holder 23a Punch Support 23b Die Support 25 Stocker 33 Stocker Base

Claims (1)

(57) [Claims] 1. A stocker for supporting a plurality of punches and dies, a plurality of mold holders for detachably supporting the punches and dies are provided on a stocker base, and each of the mold holders supports the dies. A punch and die stocker, characterized in that a part is provided so as to be able to protrude from the stocker base and a punch support portion for supporting the punch in a detachable manner in the vertical direction is provided in the mold holder.