JP2003033827A - Die block changing device in punching machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a die block changing device in a punching machine which is capable of changing die blocks in a short time. SOLUTION: A transfer car 77 takes out a die block 51 to be used next, from a die block stowing stand 75 and stows the same into a first holding section 123A. The transfer car 77 is moved to position a new die block 51 at a waiting space 63 and also to position an empty second holding section 123B in a die block delivery place 57. The used die block 51 positioned in a die block changing place 61 is pulled out by a changer 71 traveling above and stowed into the second holding section 123B of the transfer car 77 in the die block delivery place 57. Then the transfer car is moved to position the first holding section 123A in the die block delivery place 57. The changer 71 transfers the new die block 51 to the die block changing place 61 inside a body frame 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die block exchanging device in a punching machine provided with a punch block having a plurality of punches mounted thereon and a die block having a plurality of dies opposed to the punch block. It is about.

[0002]

2. Description of the Related Art FIG. 5 and FIG. 6 show an entire punching machine 1 which is well known in the prior art. Referring to FIG. 5, the base 3 is provided with a main body frame 5 having an overall gate shape and having a gap G in the central portion.

On the lower frame 7 which is the lower end of the gap G in the main body frame 5, a pair of lower guide rails 9 are provided in the Y-axis direction (left and right direction in FIG. 5). A pair of upper guide rails 13 are also provided in the Y-axis direction on the lower surface of the upper frame 11 which is the upper end of the gap G in the main body frame 5.

Referring to FIG. 6, processing tables 15 and 17 are extended in the X-axis direction on both front and rear sides (upper and lower sides in FIG. 6) of the main body frame 5. This processing table 15,
17 is a work clamp 19 for clamping the work W.
The X-axis carriage 21 having the above is provided so as to be movable and positionable along an X-axis guide rail 23 provided in the X-axis direction (vertical direction in FIG. 6). Further, on the right side of the main body frame 5 (the right side in FIG. 6), an ATC 25 for changing the mold is provided.

Referring again to FIG. 5, the lower guide rail 9
The lower guide member 27 allows the die block frame 2
9 is movably supported in the Y-axis direction. A die block 31 having a large number of dies D is detachably provided on the die block frame 29.

A punch block frame 35 is supported on the upper guide rail 13 by an upper guide member 33 so as to be movable in the Y-axis direction. A punch block 37 having a large number of punches P is detachably provided on the punch block frame 35.

The die block frame 29 and the punch block frame 35 are integrally connected by a C-shaped frame 39 which is a connecting frame. Therefore, the die block frame 29 and the punch block frame 35 are always integrally moved and positioned in the Y-axis direction.

A Y-axis ball screw 41 is rotatably provided in the gap G of the main body frame 5 in a state of penetrating in the Y-axis direction, and the Y-axis drive provided on the left portion of the main body frame 5 in FIG. The motor 43 is rotationally driven. Further, a Y-axis ball nut 45 that is screwed into the Y-axis ball screw 41 described above is attached to the punch block frame 35.

Therefore, when the Y-axis ball screw 41 is rotated by the Y-axis drive motor 43, the punch block frame 35 is moved and positioned in the Y-axis direction along the upper guide rail 13 by the action of the Y-axis ball nut 45. At the same time, the die block frame 29 connected by the C-shaped frame 39 is also moved and positioned in the Y axis direction integrally with the punch block frame 35.

On the other hand, the punch block frame 35 includes
A punch cylinder 47 that can be moved and positioned in the U-axis direction (the same direction as the X-axis direction) and in the V-axis direction (the same direction as the Y-axis direction) is provided. This punch cylinder 47 strikes the punch P. 49 is attached.

With the above construction, when punching the work W, the upper X-axis carriage 21 in FIG. 6 in which the work W is clamped is moved in the X-axis direction to work the work W. The punch block frame 35 and the die block frame 29 are integrally moved and positioned in the Y axis direction by rotating the Y axis ball screw 41 by the Y axis drive motor 43 while positioning the punch block frame 35 and the die block frame 29.

At the same time, the punch cylinder 47 is moved in the U-axis direction and the V-axis direction to move and position above the desired punch P, and the striker 4 is moved by the punch cylinder 47.
The punch P is struck via 9 to cooperate with the die D to punch the lower half of the work W in FIG.

Similarly, after the work W is transferred from the upper work clamp 19 to the lower work clamp 19, the upper half of the work W is punched in the above-described manner.

Referring also to FIG. 7, the above-mentioned ATC2
5, a chain conveyor 53 that integrally conveys the punch block 37 and the die block 31 as a mold block 51 is provided in the right direction of the Y axis from the main body frame 5. A changer 55 for pulling out the used mold block 51A is attached to the chain conveyor 53 and moves together with the chain conveyor 53.

The used die block 51A carried out by the chain conveyor 53 is exchanged with a new die block 51B at a die block transfer position 57 in the X-axis direction crossing the chain conveyor 53 (in FIG. 7, the direction orthogonal to the plane of the drawing). ) Is provided with a roller conveyor 59 and is vertically movable.

Therefore, when replacing the mold block 51A, first, the changer 5 is moved by the chain conveyor 53.
5 is moved in the Y-axis direction (leftward in FIG. 7) to the mold block replacement position 61 in the main body frame 5, the used mold block is picked up, and the changer 55 clamps it.

Referring to FIG. 8, in FIG. 8, the die block transfer position 57 and the standby positions 63 and 65 on both sides thereof are provided.
Above the table are two sliders 6
7A and 67B are provided. Moreover, a shot pin 69 is provided on each of the sliders 67A and 67B so as to be vertically movable.

Then, the chain conveyor 53 is rotated rightward in FIG.
1A is held and the mold block transfer position 57 is returned to.
Then, the roller conveyor 59 is raised to move the used die block 51A and the not-shown transcar from the lower side to the upper side in FIG. 6, and the waiting position 65 (see FIG. 6) beside the die block transfer position 57. The shot pins 69 of the sliders 67A and 67B are inserted into the holes in the upper parts of the new mold blocks 51B that have been moved to the lower part of the X-axis), and the mold blocks 51A and 51B are moved sideways (see the upper part of the X-axis in FIG. 6). , The right side in FIG. 8) to move the used mold block 5 to the standby space 63.
1A, a new mold 51 at the mold block transfer position 57
Move B. Next, the roller conveyor 59 is lowered, the changer 55 clamps a new mold block 51B, and the chain conveyor 53 causes the changer 5 to move.
5 is moved in the Y-axis direction (leftward in FIG. 7) to the mold block replacement position 61 in the main body frame 5 to open the clamp of the changer 55. Then, the chain conveyor 53 is moved in the Y-axis direction (rightward in FIG. 7) and returned to the original position. Finally, the used die block 51A in the standby space 63 is once placed at the die block transfer position 57 by the slider 67B, and then the slider 67 is placed.
It is moved to A and is moved to a standby position 65 where the transcar is on standby by a slider 67A, and the transcar is transported to the mold block storage position.

[0019]

Therefore, in order to replace the mold block 51, the chain conveyor 53 (changer) is moved forward and backward to carry out the used mold block, and the sliders 67A and 67B are moved laterally. The new die blocks 51A and 51B must be carried in by moving the chain conveyor 53 (changer) forward and backward, and there is a problem that the punching machine 1 cannot wait for a long time during this time, resulting in a decrease in work efficiency. In addition, the chain conveyor 53, the slider 67A,
There is a problem that the structure such as 67B and the drive device of the roller conveyor 59 is complicated and expensive.

The object of the present invention has been made by paying attention to the problems of the prior art as described above, and punching with a simple structure and at a low cost, which can replace the die block in a short time. It is to provide a mold block changing device in a machine.

[0021]

In order to achieve the above object, a die block exchanging device in a punching machine according to a first aspect of the present invention comprises a punch block having a plurality of punches mounted thereon, and a punch block facing the punch block. Then, the die block composed of the die blocks having a plurality of dies attached thereto is moved, and at the same time, the work supported by the extended processing table is moved to be positioned at the processing position and positioned on the desired punch. A punching machine that strikes a punch with a striker and punches a work in cooperation with a die.The die block exchange position in the body frame of the punching machine and the die block transfer of the die exchange device. A changer for reciprocating the mold block between the position and the position is provided above the mold block, A standby space for temporarily storing the mold block is provided on a mold block moving base extending in a direction intersecting with the changer across the transfer position of the mold block, and along the mold block moving base. A transcar provided so as to be capable of reciprocating is provided, and the transcar is provided with a first holding part and a second holding part capable of accommodating the mold blocks, respectively.

Therefore, when exchanging a die block composed of a punch block having a plurality of punches and a die block having a plurality of dies, first, a new die block to be used next by the transcar is selected. It is accommodated in the first holding unit. Then, the transcar is moved to position the new die block in the standby space beyond the die block transfer position of the die block moving table, and the second die is emptied.
The holding part of is positioned at the die block transfer position. On the other hand, the used mold block is positioned at a predetermined mold block replacement position, the changer moves upward to pull out the used mold block, and the second block of the transcar at the mold block transfer position is moved. After being housed in the holding part, the transcar is moved to position the first holding part at the mold block transfer position and position a new mold block at the mold block transfer position. The changer conveys the new mold block at the mold block transfer position to the mold block exchange position inside the main body frame.

According to a second aspect of the present invention, there is provided a die block exchanging device in a punching machine according to the first aspect, in which the changer moves the die block by the changer. The present invention is characterized in that a shot pin fitted in a fitting recess provided on the upper surface of the block is vertically movable.

Therefore, when the used mold block is pulled out from the mold block replacement position, the changer is moved to a position above the mold block replacement position, and then the shot pin is lowered to provide it on the upper surface of the mold block. It fits in the fitting recess. In addition, after pulling out the used mold block to the mold block delivery position, raise the shot pin to open the used mold block and move the transformer car to position the new mold block under the changer. After that, the shot pin is lowered to fit into the fitting recess on the upper surface of the new mold block, and the changer is moved to position the new mold block at the mold block replacement position.

[0025]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will now be described in detail with reference to the drawings. 3 and 4 show the entire punching machine 67 according to the present invention. In the prior art section, the same parts as those described above are designated by the same reference numerals, and a duplicate description will be omitted.

An outline of the ATC 69, which is a mold block exchanging device, will be described with reference to FIGS. 3 and 4. In this ATC 69, a changer 71 for pulling out the mold block 51 positioned at the mold block exchange position 61 (see FIG. 1) in the main body frame 5 of the punching machine 67 from the main body frame 5 is provided in the Y-axis direction. ,
At the die block transfer position 57, a transcar stand 73 as a die block moving base is provided in the X-axis direction orthogonal to the changer 71.

Then, this transcar mount 73 and FIG.
In the lower processing table 15, adjacent to the transcar stand 73, there are mold block storage mounts 75 for storing the mold blocks 51 for a plurality of mold blocks 51 (here, three). Provided and mold block 51
A transcar 77 for loading and unloading into and from the mold block storage mount 75 is provided movably in the X-axis direction along the transcar mount 73.

The mold block storage rack 75 has two mold block maintenance areas 79 for replacing and preparing the mold blocks 51 separately from the working state of the punching machine 67. It is provided in the size of a minute.

Further details will be described with reference to FIGS. A pair of left and right (upper and lower in FIG. 1) support brackets 81 projecting from the inner side surface of the body frame 5 to the outside in the Y-axis direction (left side in FIG. 2) are provided,
Two square pipe-shaped changer guide frames 83 are provided between the pair of support brackets 81. The changer 71 is attached to the two changer guide frames 83.

That is, the changer guide frame 8
A changer base plate 85 extending from the inside of the main body frame 5 to the outside in the Y-axis direction is attached to the lower surface of the body frame 5. The lower surface of the changer base plate 85 has a pair of left and right guide rails 87 (a pair of upper and lower sides in FIG. 1). Are provided horizontally in the Y-axis direction.

A ball screw 89 is rotatably provided between the pair of guide rails 87. A timing pulley 91 is attached to the right end portion of the ball screw 89 in FIG. 2, and a changer drive motor 93 provided on a changer base plate 85.
Is connected by a timing belt 95 to the rotating shaft of the.

A changer bracket 99 is provided on the guide rail 87 by a slider 97 so as to be movable in the Y-axis direction. A ball nut 101 that is screwed into the ball screw 89 is attached to the changer bracket 99. The rotation of the ball screw 89 causes the changer bracket 99 to cooperate with the ball nut 101.
Moves in the Y-axis direction between the mold block exchange position 61 and the mold block transfer position 57.

The changer bracket 99 shown in FIG.
A mold block hooking tool 105 having a shot pin 103 at its tip is provided on the right side surface of the above so as to be vertically movable. The mold block hooking tool 105 is a detachable cylinder 1 provided on a changer bracket 99.
It moves up and down by 07.

On the other hand, below the changer 71, in order to movably support both ends (upper and lower ends in FIG. 1) of the mold block 51 in the X-axis direction, a plurality of rollers 109 are arranged in the Y-axis direction. A roller table 111 arranged as a conveyor table is provided so as to project from the body frame 5 in the Y-axis direction. The height of the support point of each roller 109 in the Z-axis direction is the same as the support surface at the mold block replacement position 61, and the roller can be smoothly pulled out from the mold block replacement position 61 to the roller table 111. It is like this.

A pair of left and right (left and right in FIG. 1) guide rails 113 are provided on the upper surface of the transcar stand 73.
It is provided in the axial direction, and the above-mentioned transcar 77 is provided on the guide rail 113 via the slide member 115 so as to be movable in the X-axis direction. Further, a rack 117 is provided on the left side surface of the transcar stand 73 in FIG.
Are provided in the X-axis direction.

In the trans car 77, the rack 11 described above is used.
A transcar drive motor 121 in which a pinion 119 meshing with 7 is mounted on a rotating shaft is attached to the lower surface of the transcar 77. Further, the transcar 77 includes a first holding portion 123A and a second holding portion 123B for holding the two mold blocks 51, and each holding portion 123 is provided.
A and 123B are provided with roller guides 125 that support both ends of the die block 51 to be conveyed in the X-axis direction. The height position of the support surface of the roller guide 125 in the Z-axis direction is the same height as the support surface of the roller table 111 described above, and the mold block 51 can be moved smoothly.

Further, each holding portion 123 of the transcar 77
A, 123B with the mold block storage pusher 127 Y
The mold block storage pushers 127 are provided so as to move in the axial direction, and each of the mold block storage pushers 127 has a storage pusher 129 for inserting and removing the mold block 51 between the transformer car 77 and the mold block storage rack 75. It is provided so as to be movable in the axial direction.

Furthermore, the storage pusher 129 has a die block 3 for loading and unloading the mold block 51.
A storage shot pin 133 to be inserted into a bush 131 provided on the lower surface of 1 is provided so as to be vertically movable, and a shot pin cylinder 135 for moving the storage shot pin 133 up and down is provided.

Next, the replacement operation of the mold block 51 will be described. First, the transcar drive motor 121 rotates the pinion 119 to move the transcar 77 in front of the mold block storage rack 75 in cooperation with the rack 117. At this time, for example, the second mold block 51B stored in the second mold block storage rack 75B.
When the next is used, the first holding portion 123A of the trans car 77 is positioned in front of the second mold block 51B.

Subsequently, with the storage shot pin 133 lowered, the mold block storage pusher 127 is advanced toward the mold block storage frame 75, and when the storage block is moved to the forward end, the storage pusher 129 positions the shot pin cylinder 135. After doing, shot pin cylinder 135
Thus, the storage shot pin 133 is lifted and fitted into the bush 131 provided on the bottom surface of the die block 31. Then, the mold block storage pusher 127 is retracted to move the desired mold block 51 to the transcar 77.
It is placed on the first holding portion 123A of.

Then, the transformer car driving motor 121 is used to move the transformer car 77 to the transformer car mount 73 shown in FIG.
It is moved to the standby space 63 provided at the upper middle portion. Thereby, the mold block 51B to be used next is
The transcar frame 73 is positioned in the standby space 63.

Subsequently, the used mold block 51A is positioned and moved to the mold block exchange position 61. At this time, the attachment / detachment cylinder 107 is in a state where the shot pin 103 is raised. Then, the detaching cylinder 107 lowers the shot pin 103 to fit the bush 137 provided on the upper surface of the used punch block 37.

The changer drive motor 93 moves the changer bracket 99 to the left in FIG.
The used mold block 51A is pulled out from the main body frame 5 by moving it at a speed of min. As a result, the used mold block 51A is positioned at the mold block transfer position 57.

Used mold block 51 pulled out
Since A is held by the second holding portion 123B of the transcar 77, the shot pin cylinder 135 raises the storage shot pin 133 to fit and fix it in the bush 131 on the lower surface of the die block 31, and at the same time, for attachment / detachment. The cylinder 107 lifts the shot pin 103 to separate it from the bush 137 on the upper surface of the punch block 37.

Then, the transformer car drive motor 121 moves the transformer car 77 downward in FIG.
The holding portion 123A is positioned at the die block transfer position 57. At this time, since the changer bracket 99 of the changer 71 is located above the die block transfer position 57, the shot pin 103 is lowered by the detaching cylinder 107 to be fitted into the bush 137 on the upper surface of the new punch block 37. After that, the changer drive motor 93 moves the changer bracket 99 to the right in FIG. 2 to position the new mold block 51B at the mold block replacement position 61.

In this way, the new mold block 51B
1 is transferred to the main body frame 5 in parallel, the transcar 77 is driven by the transcar drive motor 121, and
The mold block 51A held by the second holding portion 123B is positioned in front of the corresponding mold block storage rack 75 by moving the mold block 51A downward. Then, the used mold block 51A by the mold block storage pusher 129.
Are stored in a desired mold block storage rack 75. Further, in the mold maintenance area 79, mold replacement and maintenance can be performed separately or in parallel with the working state of the punching machine 67 and the replacement work of the mold block 51.

From the above results, since the changer 71 pulls out the used mold block 51A from the main body frame 5 and then the new mold block 51B is carried into the main body frame 5, one stroke of the changer 71 causes the old and new metal molds to move. The mold block 51 can be taken in and out.
As a result, the mold block 51 can be replaced quickly and reliably.

The new die block 51B is separated from the punching machine 67 by the die transfer position 5 separately from the operation of the punching machine 67.
7, the changer 71 has a mold block exchange position 61 in the main body frame 5 and a mold block transfer position 57 in which a new mold block 51B is prepared.
It only makes a short trip to and from. Therefore, the mold block 51 can be exchanged and carried into the main body frame 5 in a short time.

Further, when the plate thickness of the work W is changed and the clearance between the punch P and the die D is changed, the clearance is changed at once for all the molds because the mold block 51 is replaced. The work efficiency can be improved. Further, the structure can be simplified as compared with the conventional mold exchanging device.

The present invention is not limited to the above-described embodiments of the invention, but can be made by making appropriate changes.
It can be implemented in other modes.

[0051]

As described above, in the die block exchanging device in the punching machine according to the first aspect of the present invention, a die block including a plurality of punches and a die block including a plurality of dies is used. When replacing the mold block, a new mold block to be used next is housed in the first holding part of the transcar and positioned in the standby space, and an empty second holding part is positioned at the mold block transfer position. I'll do it. The steps up to this point can be prepared independently of the operating state of the punching machine. In this state, the changer pulls out the used mold block at the mold block exchange position and stores it in the second holding portion of the transcar, and then moves the transcar and stores it in the first holding portion. Since the new mold block is positioned at the mold block transfer position, the changer can immediately transfer the new mold block to the mold block exchange position. As a result, the replacement time of the mold block can be significantly shortened. Further, the structure can be simplified as compared with the conventional mold exchanging device.

In the die block exchanging device in the punching machine according to the second aspect of the present invention, after the used die block is pulled out to the die block transfer position, the shot pin is raised to open the used die block. , Move the transcar to position the new mold block under the changer, then lower the shot pin to fit into the fitting recess on the top of the new mold block, so the shot pin moves up and down once You can replace the mold block with. For this reason, it is possible to shorten the mold block replacement time.

[Brief description of drawings]

FIG. 1 is a plan view showing a mold block exchanging device in a punching machine according to the present invention.

FIG. 2 is a front view seen from the direction II in FIG.

FIG. 3 is a front view showing the entire punching machine.

FIG. 4 is a plan view seen from the IV direction in FIG.

FIG. 5 is a front view showing the entire conventional punching machine.

FIG. 6 is a plan view seen from a VI direction in FIG.

FIG. 7 is a schematic explanatory view showing a mold block exchanging device in a conventional punching machine.

FIG. 8 is an enlarged view of FIG. 6 as seen in the direction of arrow VIII.

[Explanation of symbols]

5 body frame 15 Processing table 31 die blocks 37 punch block 49 striker 51 mold block 57 Mold block transfer position 61 Mold block replacement position 63 waiting space 67 punching machine 69 ATC (Mold block exchange device) 71 Changer 73 Transcar stand (mold block moving stand) 75 Mold Block Storage Stand 77 Transcar 79 Mold maintenance area 103 Shot pin 111 Roller table (conveyance table) 123A First holding unit 123B Second holding unit 129 Mold block storage pusher 137 Mating recess P punch D die

Claims (2)

[Claims] 1. A punch block having a plurality of punches mounted thereon and a die block composed of a die block having a plurality of dies mounted thereon facing the punch block are moved and supported by an extended processing table. A punching machine for moving a work to be positioned at a processing position, striking the punch with a striker positioned on the desired punch, and punching the work in cooperation with a die. A changer for reciprocating the mold block between the mold block exchange position in the main body frame of the mold and the mold block transfer position of the mold exchanging device is provided above the mold block. The mold block is mounted on the mold block moving base extending in the direction intersecting the changer with the position sandwiched. A waiting space for temporarily storing the mold blocks is provided, and a transcar provided so as to be capable of reciprocating along the mold block moving base is provided. Section and a second holding section are provided, a die block changing device in a punching machine. 2. The changer has a shot pin vertically movable so as to be fitted in a fitting recess provided on an upper surface of the mold block for moving the mold block. A mold block exchanging device for a punching machine according to claim 1.