JPH10323725A - Exchange device for mold in punching press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To shorten a stopping distance of the process machine by optimizing an arrangement of molds and enabling an outside initial set-up of the molds for the next lot. SOLUTION: A carrier 71 freely movable on a guide rail 69 is provided adjacently to a mold exchange position K set in a punching press 1, and a station 73 for storing a punch block 23 and die block 25 is equipped in parallel with the guide rail 69. The first transportation means 91 integratedly carrying in/out the punch block 23 and the die block 25 at the mold exchange position K and the second transportation means 93 carrying in/out the punch block 23 and the die block 25 onto the station 73 are provided. Thus, the outside arrangement of molds is excellently made to shorten the stopping distance of the processing machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die changing device for a punching press.

[0002]

2. Description of the Related Art Conventionally, as a method of exchanging dies for, for example, a punching press, a method is generally employed in which an operator replaces one die at a time. In addition, a plurality of molds (2 to 5
(Type) and a method of exchanging each unit is adopted.

[0003]

However, in the above-described conventional die changing method in the punching press, it is impossible to properly arrange the dies according to the shape of the work. In such a case, a great deal of time is required for replacement. Also, when replacing the molds in units, the molds are made up of 5 molds at the maximum.
When a mold or more is used, two or three replacements are required during the processing of one product, and the tact time is increased.

Further, since there is only one mold block used in the turret punch press, external setup cannot be performed, and there is a problem that the machining time is reduced by the mold exchange time.

An object of the present invention is to provide a die changing device in a punching press which enables the die arrangement to be optimized and the die for the next rod to be externally set up, thereby reducing the stop time of the processing machine. It is in.

[0006]

According to a first aspect of the present invention, there is provided a die changing apparatus for a punching press, comprising: a punch block having a plurality of punches and a die block having a plurality of dies. A mold exchanging device for exchanging with respect to a punching press, a movable vehicle is provided on a traveling path adjacent to a mold exchanging position provided in the punching press, and the punch block is arranged in parallel with the traveling path. And a platform having a plurality of storage positions for storing the die block and a first transfer means for integrally loading or unloading the punch block and the die block at the mold changing position; and a punch block on the platform. And a second transfer means for integrally carrying in the die block or carrying out the die block from the gantry.

Therefore, the punch block provided with the punch and the die block provided with the die are integrally loaded into the carrier by the first transfer means at the mold changing position provided on the punching press, and the carrier is moved. And is carried out to a predetermined storage position of the gantry by the second transfer means. Then, the punch block and the die block are carried into the carrier by the second transfer means from the gantry on which the mold-replaced punch block and the die block have been placed, and the carrier is moved to the mold exchanging position and the first carrier is moved to the first position. The punch block and the die block are carried out to the mold changing position by the transfer means.

Thus, the replacement can be simplified, the time required for the replacement can be shortened, the operation rate of the processing machine can be improved, the mold arrangement can be optimized, and the next rod can be set up outside. Space saving is achieved.

According to a second aspect of the present invention, there is provided a die exchanging device for a punching press according to the first aspect, wherein the die exchanging device for a punching press according to the first aspect further comprises a punch block elevating device for lifting a punch block placed on the gantry. The punch block elevating device is provided so that a punch and a die block can be freely positioned at an arbitrary storage position of the gantry.

Therefore, among the punch blocks and the die blocks stored on the gantry at an arbitrary position, the punch blocks are raised by the punch block lifting / lowering device to replace the dies provided in the die blocks, and the dies are replaced. You. Thus, the die can be easily exchanged.

According to a third aspect of the present invention, there is provided a die exchanging apparatus for a punching press according to the present invention, and the punch block and the die block are drawn out to a die exchanging position or inserted into the punching press. The pusher device is provided movably in a frame of the punching press.

Therefore, when the mold is replaced, a pusher device for pulling out the punch block and the die block to the mold replacement position and inserting the punch block and the die block into the punching press is provided, so that the replacement work can be automated.

According to a fourth aspect of the present invention, there is provided a die changing apparatus for a punching press according to the present invention, wherein the first transfer means is capable of engaging and disengaging with the die block. (1) a pusher plate provided with a locking member, and a fluid pressure operated cylinder for moving the pusher plate back and forth in the same direction as the traveling direction of the carrier, wherein the second transfer means comprises:
A stroke plate provided with a second locking member that can be engaged with and disengaged from the die block, and a fluid-operated cylinder that moves the stroke plate left and right in a direction perpendicular to the traveling direction of the transport vehicle. It is characterized by having.

Therefore, the punch block and the die block can be exchanged at the mold exchanging position by moving the pusher plate engaged with the die block back and forth by the first engagement member, and the second engagement member can be replaced with the second engagement member. By moving the stroke plate engaged with the die block to the left and right, the punch block and the die block in the gantry can be exchanged. Thus, it is possible to easily and completely replace the mold, thereby shortening the time required for the replacement.

[0015]

Embodiments of the present invention will be described below in detail with reference to the drawings. The punching press will be described with reference to a uniaxially movable punching press, but the present invention is not limited to this model, and may be employed in, for example, a multi-press.

Referring to FIG. 7 and FIG. 8, the uniaxially movable punching press 1 has an upright portal-shaped frame 3. This frame 3 is composed of a lower frame 5 and an upper frame 7. It is integrated with the side frame 9.

A plurality of upper linear guide rails 11 and lower linear guide rails 13 are provided in the frame 3 so as to extend in the Y-axis direction (vertical direction in FIG. 7 and horizontal direction in FIG. 8). Linear guide rail 1
The punch block frame 17 and the die block frame 19 are integrally provided on the base members 1 and 13 with a C-shaped connecting member 21 via a plurality of linear guides 15. A punch block 23 having a plurality of punches P is mounted in the punch block frame 17, and a die block 25 having a plurality of dies D is mounted in the die block frame 19. I have.

The drive system for moving the integrally provided punch block frame 17 and die block frame 19 in the Y-axis direction includes a punch block frame 17
Is provided with a ball screw 27 screwed in the Y-axis direction, and a Y-axis drive motor 29 is provided on one side of the ball screw 27.

When the Y-axis drive motor 29 is driven, the ball screw 27 rotates and the punch block frame 17 and the die block frame 19 are moved in the Y-axis direction via a nut member (not shown). become.

A ram carriage 31 is provided in the punch block frame 17 in the V-axis direction (the horizontal direction in FIG. 8).
It is provided movably to. More specifically, the ram carriage 31 is mounted on the upper linear guide rail 11 via a linear guide 33 and is movable in the V-axis direction. A drive system for moving the ram carriage 31 in the V-axis direction includes a ball screw 37 connected to an output shaft of a V-axis drive motor 35 provided on the punch block frame 17.
It is screwed to a nut member (not shown) mounted on the ram carriage 31.

With the above configuration, when the V-axis drive motor 35 is driven, the ball screw 37 rotates, and the ram carriage 31 is rotated via a nut member screwed to the ball screw 37.
Is moved in the V-axis direction.

A ram cylinder 39 for hitting the punch P is movable in the ram carriage 31 in the U-axis direction (a direction perpendicular to the drawing in FIG. 8). As a drive system for moving the ram cylinder 39 in the U-axis direction, a ball screw connected to a U-axis drive motor is screwed to a nut member provided on the ram cylinder 39, although not shown.

With the above configuration, when the U-axis drive motor is driven, the ram cylinder 39 moves in the U-axis direction via the ball screw and the nut member, and a plurality of ram cylinders 39 move in the V-axis direction. The punch P is positioned just above a desired one.

The punch block 23 and the die block 2
9 is replaced with a plurality of engaging holes 41 formed in the lower surface of the punching block 23, and the die block 25 is provided with a shot pin which engages with the engaging hole 41, as shown in FIG. 43 is provided so as to be vertically movable. Furthermore, a shot pin raising cylinder 45 for moving the shot pin 43 up and down is provided on the die block frame 19.

With the above configuration, when the punch block 23 and the die block 25 are exchanged,
When the punch block 23 is removed from the punch block frame 17, the punch block 23 falls by its own weight, and the engagement hole 41 formed on the lower surface of the punch block 23 engages with the shot pin 43 to form a punch on the die block 25 with a predetermined gap. Block 23
Is placed. Further, when the punch block 23 and the die block 25 are attached, the shot pin raising cylinder 45 is operated, the punch block 23 is lifted via the shot pin 43, and the punch block 23 is set on the punch block frame 17.

Tables 47A and 47B are arranged before and after the frame 3 (right and left in FIG. 7), and the work W carried on the tables 47A and 47B is gripped by a plurality of work clamps 49A and 49B. The work clamps 49A and 49B are provided on the carriages 51A and 51B. The carriages 51A, 51B are provided on one side of the tables 47A, 47B with guide rails 53A extending in the X-axis direction (left-right direction in FIG. 7).
It is provided on 53B via a guide member (not shown). The carriages 51A, 51B are screwed into ball screws 55A, 55B extending in the X-axis direction. One end (upper and lower sides in FIG. 7) of the ball screws 55A, 55B is connected to an X-axis drive motor. 57A and 57B are connected.

With the above structure, the work W carried into the table 47A is gripped by the work clamp 49A and moved in the X-axis direction by the carriage 51A, and the punch block frame 17 and the die block frame 19 provided on the frame 3 are moved. By moving in the Y-axis direction, a desired punch P and die D are positioned at a desired processing position of the work W. And
By operating the ram cylinder 39, the work W is punched by the cooperation of the punch P and the die D.

Further, when the work W is punched, the work W proceeds to the left in FIG. 7 and is returned to the work clamp 49B from the work clamp 49A, and the work W is punched. Accordingly, since the work clamps 49A and 49B do not enter the frame 3, they do not interfere with the connecting member 21 and eliminate dead zones.

On the lower frame 5 of the frame 3, the pusher device 5 is located on the upper side in FIG. 7 and on the right side in FIG.
9 are provided. The pusher device 59 is for pulling out the punch block 23 and the die block 25 to the mold changing position K, and for inserting the punches and die blocks 23 and 25 into the punching press 1 from the mold changing position K. The configuration is such that a plurality of endless chain conveyors 61 connected to the lower frame 5 are provided extending in the Y-axis direction.
And a pusher body 65 having a hook-shaped locking member 63 that can be freely engaged and disengaged.

FIG. 7 shows a mold exchanging device 67 for carrying in the punches and die blocks 23 and 25 to the mold exchanging position K or for carrying out the punches and die blocks 23 and 25 at the mold exchanging position K. As shown in the figure, a guide rail 69 which is a running path is laid perpendicular to the chain conveyor 61 and parallel to the table 47A. A carriage 71 is movable on the guide rail 69 in the X-axis direction, and a gantry 73 is provided in parallel with the guide rail 69. The gantry 73 has a punch, a die block 23,
5 can be stored side by side in the direction of the traveling path.

A punch block elevating device 75 is provided on the side surface of the gantry 73 so as to be movable in the X-axis direction. The punch block elevating device 75 includes a lifter frame 77, and a beam-shaped lifter 79 at the tip of the lifter frame 77. Although not shown, the lifter 79 is moved up and down by a hydraulic cylinder.

The mold exchanging device 67 will be described in more detail.

Referring to FIG. 1, a pusher device 59 provided on the lower frame 5 of the frame 3 comprises a chain conveyor 61 composed of a plurality of endless chains 81 arranged in parallel. The pusher main body 65 has the die block 25.
A pusher shaft 83 is provided when a plurality of locking members 63 that can be engaged with and disengaged from each other are provided.

With the above configuration, the punch and die block 2
To pull out the die 25 to the die changing position K, the engaging member 63 provided on the pusher body 65 is engaged with the die block 25, and the chain conveyor 61 is driven to drive the punch, die block 23, 25 is pulled out to the mold changing position K and stopped. Further, when the punches and dies 23 and 25 to be replaced by the carrier 71 provided in the mold exchanging device 67 are carried into the mold exchanging position K, the chain conveyor 61 is driven to drive the pusher shaft 83 provided in the pusher body 65. While pressing the die block 25 into the punching press 1.

A plurality of guide rails 69, which constitute a running path and extend in the X-axis direction (left-right direction in FIG. 1), are laid at right angles to the chain conveyor 61 and at the center of the mold changing position K. A transport vehicle 71 that is movable in the X-axis direction is provided on the guide rail 69.

The detailed structure of the transport vehicle 71 is shown in FIGS.
4 and FIG. 4, the carrier body 89 is movable in the X-axis direction via a guide member 87 on the guide rail 69 provided on the base plate 85 so as to extend in the X-axis direction, and is not shown. However, the drive motor rack
The carrier 71 moves in the form of a pinion.

The transport vehicle 71 has a first transfer means 91 for integrally loading or unloading the punches and die blocks 23 and 25 at the die changing position K, and a punch and die blocks 23 and 25 on the gantry 73. Loading or mounting 7
Second transfer means 93 for carrying out from above 3 is provided.

The first transfer means 91 is shown in FIGS.
As shown in detail in FIG. 2, a hydraulically operated cylinder 97 is provided on a bracket 95 at the rear of the upper surface of the carrier body 89 (left side in FIGS. 2 and 3). A pusher plate 101 is provided at the tip of the piston rod 99. And
The pusher plate 101 is provided on a plurality of linear guide rails 103 laid on the bracket 95 via a linear guide 105 so as to be movable in the X-axis direction (left and right directions in FIGS. 2 and 3).

Further, a fluid-pressure operated cylinder 109 having a plurality of shot pins 107 is provided vertically on the tip side of the pusher plate 101, and the shot pins 107 are formed on the die block 25. It can be inserted into and removed from the recess 111.

A plurality of punches and die blocks 23 and 25 are provided on both sides of the upper surface of the carrier body 89 so that the punches and die blocks 23 and 25 can smoothly move between the carrier body 89 and the chain conveyor 61. A first rail 91 on which a roller 113 is mounted is provided to constitute the first transfer means 91.

As shown in FIGS. 3 and 4, the second transfer means 93 is an X-axis on which the punches and die blocks 23, 25 are transferred by the first transfer means 91 to the upper surface of the carrier body 89. A stroke plate 117 is provided that is movable in a Y-axis direction (a direction perpendicular to the drawing in FIG. 3 and a left-right direction in FIG. 4) perpendicular to the direction.

The stroke plate 117 is movable in the Y-axis direction via a linear guide 121 on a linear guide rail 119 laid on the carrier body 89 so as to extend in the Y-axis direction. The drive source is such that the tip of a piston rod 125 of a hydraulic cylinder 123 fixed on a carrier body 89 is connected to the stroke plate 1.
17 is connected to a bracket 127 which is suspended from the lower surface. Further, a fluid pressure-operated cylinder 131 having a plurality of shot pins 129 provided on the back surface of the stroke plate 117 is vertically provided. The shot pins 129 are engaged with engagement holes 133 formed on the back surface of the die block 25. It is detachable.

Further, on both sides of the stroke plate 117, a die rail 137 having a plurality of rollers 135 extending in the Y-axis direction is provided on the carrier body 89.

Referring again to FIG. 1, a gantry 73 is erected on the base plate 85 in parallel with the guide rail 69 which is a traveling path on which the carrier 71 travels. Punch, die block 23, 2
5 can be stored side by side in the traveling path direction (X-axis direction).

A punch block elevating device 75 is provided on the side surface of the gantry 73 so as to be movable in the X-axis direction. More specifically, referring to FIGS. 2, 5 and 6, a plurality of linear guide rails 139 are provided on the side surface of the gantry 73 so as to extend in the X-axis direction.
The lifter frame 77 via the linear guide 141
Is movably mounted.

The lifter frame 77 is provided with a fluid-pressure operated cylinder 145 having a shot pin 143, and the punch, die block 23,
The shot pins 143 can be engaged with and disengaged from the engagement holes 147 formed for each of the 25 storage positions, and the lifter frame 77 can be positioned at a desired position.

A hydraulic cylinder 149 is provided above the lifter frame 77, and a bracket 153 provided on the beam-shaped lifter 79 is connected to the tip of a piston rod 151 built in the cylinder 149. By operation, the lifter 79 can move vertically.

The lifter 79 is mounted on the lifter frame 7.
7, a plurality of linear guide rails 15
5 are mounted on the linear guide rail 155 via a linear guide 157. The rod 161 mounted on the cushion spring 159 provided at a plurality of positions on the upper surface of the lifter frame 77
It is erected on the upper surface of. Further, the lifter 79 is integrally provided with L-shaped support members 165A and 165B inserted into the support grooves 163 formed in the punch block 23. Reference numeral 167 denotes a handle for manual operation, and reference numeral TK denotes a standby position of the lifter frame 77.

With the above configuration, the lifter frame 77 at the standby position TK is moved to the position where the die block 25 having the die D for manually exchanging the lifter frame 77 is placed, and the cylinder 145 is operated to activate the shot pin 14.
3 is inserted into the engagement hole 147 to perform positioning. When the lifter 79 supporting the punch block 23 is raised by operating the cylinder 149, the punch block 2
The distance between the die 3 and the die block 25 is increased, and the die D can be replaced.

With the above-described configuration, the effect is that the punch and the die blocks 23 and 25 set in the punching press 1 are carried out to the die changing position K by the pusher device 59. Punch moved to mold change position K,
In order to move the die blocks 23 and 25 to the transport vehicle 71, the transport vehicle 71 is moved forward, and the punch and the die block 2 are moved by the operation of the first transfer means 91 provided on the transport vehicle 71.
3 and 25 are transferred onto the transport vehicle 71. And the transport vehicle 7
1 is retracted to a predetermined position and stopped.

When the transport vehicle 71 stops at a predetermined position, the punch and the die blocks 23 and 25 are transferred onto the gantry 73 by the operation of the second transfer means 93 provided on the transport vehicle 71. Then, the empty carrier 71 is moved to the storage position where the desired punch P and the die D have already been exchanged and the die blocks 23 and 25 are placed. The die blocks 23 and 25 are transferred onto the carrier 71.

Punch and die block 2 onto carrier 71
When the carriers 3 and 25 are loaded, the carrier 71 is advanced, and the punches and the die blocks 23 and 25 are carried out into the mold changing position K by the operation of the first transfer means 91. The punches and die plates 23 and 25 carried into the mold changing position K are transferred into the punching press 1 by the pusher device 59, and the punches and the die blocks 23 and 25 are punched and the die block frames 17 and It is set in 19 and punching is performed. During the punching process, the die mounted on the punch 73 and the die P on the die blocks 23 and 25 and the die D on the die 73 are exchanged.

Therefore, replacement can be simplified, the time required for replacement can be reduced, the operating rate of the processing machine can be improved, and the die for the next rod can be set up outside.

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

[0055]

As will be understood from the above description of the embodiment, according to the present invention according to the first aspect, the punch block and the die having the punch at the die changing position provided on the punching press are formed. The die block provided is integrally carried into the carrier by the first transfer means, and the carrier is moved to a predetermined position on the gantry by the second transfer means. Then, the punch block and the die block are carried into the carrier by the second transfer means from the mount on which the punch block and the die block whose mold has been replaced are placed, and the punch block and the die block are carried into the carrier. Is moved to the mold changing position, and the punch block and the die block are carried out to the mold changing position by the first transfer means.

Thus, the exchange can be simplified, the time required for the exchange can be shortened, the operation rate of the processing machine can be improved, the arrangement of the dies can be optimized, and the dies for the next rod can be set up externally. Space saving is achieved.

According to the second aspect of the present invention, of the punch blocks and the die blocks stored on the gantry at an arbitrary storage position, the punch block lifting / lowering device is used to exchange a die provided in the die block. And the die is replaced. Thus, the die can be easily exchanged.

According to the third aspect of the present invention, a pusher device for pulling out the punch block and the die block to the die changing position and inserting the punch block and the die block into the punch press at the time of die changing is provided. Automation can be achieved.

According to the fourth aspect of the present invention, the punch block and the die block can be exchanged at the mold exchange position by moving the pusher plate engaged with the die block with the first locking member back and forth. Then, the punch plate and the die block can be exchanged on the gantry by moving the stroke plate engaged with the die block by the second locking member left and right. Thus, the mold exchange can be easily performed automatically and the time required for the exchange can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating a main part of the present invention and a mold changing apparatus.

FIG. 2 is an enlarged plan view of a part viewed from an arrow II in FIG.

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

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

FIG. 5 is an enlarged sectional view taken along line VV in FIG. 2;

FIG. 6 is an enlarged side view of a part viewed from the arrow VI in FIG. 2;

FIG. 7 shows an embodiment of the present invention, and is an explanatory plan view of a punching press and a mold changing apparatus.

FIG. 8 is an enlarged front explanatory view of the punching press in FIG. 7;

FIG. 9 is an explanatory diagram showing connection between a punch block and a die block.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Punching press 3 Frame 23 Punch block 25 Die block 59 Pusher device 67 Die exchanging device 69 Guide rail (travel path) 71 Transport vehicle 73 Stand 75 Punch block elevating device 91 First transfer means 93 Second transfer means 97 Cylinder 101 Pusher Plate 107 Shot pin (first locking member) 117 Stroke plate 123 Cylinder 129 Shot pin (second locking member) P Punch D Die K Die exchange position

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁶ Identification code FI B21D 28/34 B21D 28/34 Z

Claims (4)

[Claims] 1. A die changing device for exchanging a punch block having a plurality of punches and a die block having a plurality of dies for a punching press, wherein the die changing device is adjacent to a die changing position provided in the punching press. And a rack having a plurality of storage positions for storing the punch block and the die block is provided in parallel with the travel path, and a punch block and a die are provided in the mold changing apparatus. A first transfer means for integrally loading or unloading the block, and a second transporting means for integrally loading or unloading the punch block and the die block onto the gantry.
A mold exchanging apparatus in a punching press, wherein a transfer means is provided on the carrier. 2. A punch block elevating device for lifting a punch block placed on the gantry is provided on one side of the gantry, and the punch block elevating device is used to move a punch and a die block to an arbitrary storage position on the gantry. 2. A die changing device in a punching press according to claim 1, wherein the die changing device is provided so as to be freely positioned. 3. A pusher device for pulling out the punch block and the die block to a mold changing position or inserting the punch block and the die block into a punching press is provided movably in a frame of the punching press. A die changing device in the punching press described in the above. 4. A pusher plate having a first locking member engageable with and disengageable from the die block, and the first transfer means moves the pusher plate back and forth in the same direction as the traveling direction of the transport vehicle. The second transfer means includes a stroke plate having a second locking member that is detachable from and engaged with the die block, and the stopper plate is moved in the traveling direction of the transport vehicle. 2. A die changing device in a punching press according to claim 1, wherein said die changing device comprises a fluid pressure operated cylinder which can be moved left and right in a direction perpendicular to the direction.