JPH0576959A - Method for selecting metal die in automatic die changing system - Google Patents

Abstract

PURPOSE:To control a prescribed die in going in and out of a prescribed place by setting a die storage part in which a sensor is provided to read an identification code attached to the metal die. CONSTITUTION:The metal die identification code 105 is assigned to the upper and lower dies 55, 56. A magnetic sensor 74 is arranged in the die storage part 80 of a delivery base 77 in a die taking-out device 16, and a signal reading out the identification code is inputted to a control device 109. An unmanned carrier 14, by which a control signal is received, and the die taking-out device 16 are controlled in driving between a prescribed press and a prescribed die storage shelf 11, and the prescribed die is stored in the prescribed shelf.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die selecting method used in a system in which a die set having automatic clamp devices for upper and lower dies is installed in a press machine and the upper and lower dies are automatically replaced in the die set. Is.

[0002]

14 and 15 are plan views showing the outline of a conventional system. In this figure, 1 is a mold storage shelf, and 2 is a plurality of press machines.

Reference numeral 4 denotes an automatic guided vehicle of a mold, which runs along a guideline 5 by computer control or the like.

The carrier 4 is stopped in front of a desired mold of the storage rack 1 as shown by a chain line to receive the desired mold of the storage rack 1, travels to the front of the desired press machine 2 and is stopped. After taking out the used mold from the press machine 2 and mounting a new mold on the press machine 2, return to the original storage shelf 1 and put the used mold in a predetermined position on the storage shelf 1. Return and prepare the next mold.

As shown in FIG. 15, a carriage 6 which moves in the left-right direction toward the press machine 2 and a die on the stand 6 are mounted on the press machine 2 as shown in FIG. An advancing / retreating member 7 is provided which functions to pull out the die mounted on the carriage 2 and place it on the carriage 6.

When the mold storage shelves 1 are in a single stage and the molds are arranged in a horizontal row, the structure and operation as described above may be used. However, the mold storage shelves 1 are multi-tiered and many molds are vertically arranged. In the case where they are stored in line with each other, as shown in FIG. 16, a mold take-out device 9 that moves along the rail 10 is provided in front of the storage shelf 1, and by this device 9, a metal mold at an arbitrary position of the storage shelf 1 is provided. The mold is taken out and placed on the automatic guided vehicle 4, or the mold placed on the automatic guided vehicle 4 is taken out and returned to a predetermined location on the storage shelf 1.

[0007]

In the system as described above, the computer controls the automatic guided vehicle and the mold take-out device, but the electric circuit becomes extremely complicated and expensive, and the electric noise is generated. There are problems such as being easily affected by.

An object of the present invention is to solve the above problems and provide a simple and reliable method for selecting a mold.

[0009]

In order to solve the above-mentioned problems, the present invention provides a plurality of press machines, a mold storage rack for storing a plurality of molds, and a front position of the mold storage rack. A mold take-out device to be used, and an automated guided vehicle that moves between the front part of the mold take-out device and the front part of each press machine, and from the desired position of the mold storage shelf by the mold take-out device. The desired die taken out is placed on the unmanned transport vehicle, the unmanned transport vehicle is run to just before the desired press machine, and then the die on the unmanned transport vehicle is mounted on the desired press machine,
Take out the mold on the desired press machine, place it on the automatic guided vehicle, move this automatic guided vehicle in front of the mold take-out device, and take out the mold on the automatic guided vehicle by the mold take-out device. In an automatic die change system that returns to a predetermined location of a die storage rack, a die identification code that uses magnetism or the like is attached to each die, and a die accommodating portion of the die take-out device is attached. , A sensor for reading the identification code of the mold housed in the mold housing portion is provided, and the mold take-out device is operated based on the reading result of the sensor to make a predetermined mold at a corresponding position of the mold storage shelf. The present invention provides a method for selecting a mold, which is characterized in that

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 11 is a mold storage rack, 12 is a plurality of press machines, 14 is an automated guided vehicle that moves along a guide line 15, and 16 is a mold take-out provided at the front of the storage rack 11. The device moves along the guide rails 17.

As shown in FIGS. 2 and 3, the apparatus on the automatic guided vehicle 14 is almost the same as the conventional one, and the carriage 27 moves along the guide rails 19 on the guided vehicle 14 to form a rodless cylinder. It moves to the right or left toward the press machine 12 by the driving means 20 such as.

Reference numeral 21 in FIGS. 2 and 3 denotes a support frame provided on the transport vehicle 14, and an advancing / retreating member 23 for advancing / retreating along a guide rail 22 facing the press machine 12 is provided at the center of the frame 21. is there. The advancing / retreating member 23 is also driven by driving means 25 such as a rodless cylinder.

As shown in FIG. 2, the advancing / retreating member 23 has an arm 26 extending toward the pressing machine 12 in a state of being suspended from the rail 22, and has locking pins 24 which can be retracted at the upper and lower ends of the arm 26. Have

The pin 24 is driven by driving means 29 such as an air cylinder electromagnet. Arm 26
A pinion gear 30 is provided on the lower side, and a support base 31 for supporting the retracted pinion gear 30 is provided on the transport vehicle 14 behind the carriage 27. A resistance to the rotation of the gear is generated by such means as bringing a braking ring by spring pressure into contact with the shaft portion of the pinion gear 30.

Reference numeral 35 denotes a pair of mold holders on the carriage 27. Side walls 37 are fixed to both sides of the bottom plate 36 as shown in FIGS. 5 and 6, and upper guide rails 39 are provided above and below the side walls 37. And a lower guide rail 40.

A rack gear 41 with which the pinion gear 30 meshes is provided at the center of the upper surface of the bottom plate 36.

In the press 12 shown in FIGS. 2 to 4, 42 is a die set. The die set 42 includes a substrate 43 fixed on the table 13 of the press machine 12,
It is a well-known one which is composed of an upper plate 45 fixed to the lower surface of the ram 44 of the press machine 12 and a guide post 46, and clamp claws 49, 50 operated by hydraulic pressure, compressed air, etc. on the upper surface of the base plate 43 and the lower surface of the upper plate 45. And the upper plate 45
A mold guide 51 is provided on the lower surface of the.

Further, as shown in FIG. 3, the lower die 56 is positioned on the substrate 43 by the left and right guides 52 and the rear stoppers 53, and the lock pins 54 are retractable.

7 and 8 show the details of the mold take-out device 16, and 60 is its frame. The frame 60 is movable along the guide rail 17 by a lower wheel 61 and a guide roller 62.
The upper frame 63 of the mold storage rack 11 is extended forward and the upper guide rollers 65 are brought into contact with the upper and lower guide rails 64 provided at the lower part of the upper frame 63 so that a correct posture can be maintained.

A rack gear 6 is provided between the guide rails 17.
6 is provided, and the pinion gear 67 at the lower portion of the frame 60 is meshed with the rack gear 66. This pinion gear 67
Is driven via a suitable interlocking mechanism by a driving means 69 including a motor and a speed reducer in the machine provided on one side of the lower portion of the frame 60 to move the frame 60 left and right. Further, a control device 109 such as drive means 69, 73 is provided in the machine box on one side of the frame 60.

Reference numeral 70 denotes an elevating frame which is vertically moved along vertical guide rails 71 on both sides in the frame 60.
0 is connected to a part of a vertical endless chain 72 provided on one side of the frame 60, and is vertically moved by rotating the chain 72 in the forward and reverse directions by a driving means 73 composed of a motor and a speed reducer in the lower part of the frame 60.

On the bottom portion 75 of the elevating frame 70, there is provided a feeding table 77 that moves forward and backward along the guide rail 76 by a driving means such as an air cylinder (not shown). As shown in detail in FIGS. 9 and 10, a pair of left and right side walls 79 are provided on the feeding table 77, and the guide rails 81 of the upper mold 55 and the lower mold 56 are provided above and below the side walls 79. A guide rail 82 is provided so that a space between the side walls 79 is accommodated in the mold housing portion 80
And In addition, stopper pins 91 that can be retracted are provided at the front and rear of each of the guide rails 82, and a total of four air cylinders for driving the stopper pins 91, driving means 90 such as electromagnets, and the like are provided on the outside of the side walls 79 in the vertical and forward and backward directions. Set up in. Further, a plurality of magnetic sensors 74 are arranged side by side and fixed to the inner side of the one side wall 79 near the lower part.

An advancing / retreating member 94 for advancing / retreating along a guide rail 93 in the front-rear direction is provided at the upper part of the elevating frame 70 shown in FIGS. 7 and 8 by a driving means such as an air cylinder (not shown). A traverse member 96 that traverses along the left-right guide rails 95 is provided below the member 94.
An arm 97 extending toward the mold take-out device 16 is provided below the member 96. Further, locking pins 99 that can be retracted and retracted are provided above and below the tip. The pin 99 is driven by a driving means 100 such as an air cylinder electromagnet.

11 and 12 show the mold storage shelf 11
The upper frame 63 and the lower base 104 are shown in detail.
Vertical frames 103 are fixed at regular intervals between these vertical frames 1
Mold receiving members 101 and 102 are provided on opposite side surfaces of 03. In the illustrated example, two sets of molds are stored in two upper and lower stages, the upper member 101 receives only the upper mold 55 of the upper mold, and the lower member 101 receives the lower mold 56 of the lower mold. Since it receives only the L shape, it may be L-shaped. Also, the intermediate receiving member 1
02 receives the lower die 56 of the upper die and the upper die 55 of the lower die up and down, and thus has a shape in which two stages of L-shapes are stacked.

On one side of the lower die 56, the feeding table 77 is provided.
At a position corresponding to the upper sensor 74, a mold identification code 105 consisting of a binary number consisting of a magnetic piece showing a specific mold depending on the presence or absence of magnetic force and a non-magnetic piece is provided. Further, locking pieces 106 and 107 that engage and disengage the upper and lower locking pins 24 and 99 are provided at the front portions of the upper mold 55 and the lower mold 56.

The operation of the above embodiment will be described below. First, as shown by the solid line in FIG. 1, under the condition that the automated guided vehicle 14 is stopped at a fixed position immediately before the mold unloading device 16, a signal from the computer is sent to the control device 109 of the mold unloading device 16. When input, the device 16 is moved along the rail 17 by driving the driving means 69, 73, and the lifting frame 70 is moved.
Moves to a predetermined height and moves the feeding table 77 to a position corresponding to the mold according to the signal from the computer.

Then, in response to a signal from the control device 109, the traverse member 96 moves in the direction of the arrow in FIG. 7 and stops at the position indicated by the chain line. At this time, it is needless to say that the feeding base 77 is advanced as shown by the solid line in FIG. 8 so that the arm 97 does not collide with the side wall 79 on the feeding base 77. Under the condition that the member 96 is located at the position shown by the chain line in FIG. 7, the advancing / retreating member 94 starts to move forward in the direction of the arrow in FIG.
As described above, the desired mold is inserted between the locking piece 106 of the upper mold 55 and the locking piece 107 of the lower mold 56.

Under the condition that the tip of the arm 97 enters between the upper and lower locking pieces 106 and 107 as described above, the upper and lower driving means 100 operate and the upper and lower locking pins 99 cause the upper and lower locking pieces 106. , 107. Then, the advancing / retreating member 94 retracts, a new mold including the upper mold 55 and the lower mold 56 is pulled out from the shelf 11, and the mold accommodating portion 8 between the side walls 79 on the feeding table 77 is received.
It is pulled in along 0 along the guide rails 81 and 82. Next, after each driving means 90 of the side wall 79 is actuated and each stopper pin 91 is projected to fix the upper mold 55 and the lower mold 56, each locking pin 99 above and below the tip of the arm 97 is retracted, It is disengaged from each locking piece 106, 107. Advance member 94
Is further retracted to a position where the arm 97 does not contact the side wall 79, and then the traverse member 96 returns to the position shown by the solid line in FIG. Under this condition, the delivery table 77 moves to the left in FIG. 8 to bring the delivery table 77 on which the mold is placed closer to the automated guided vehicle 14 and stop.

Next, when the advancing / retreating member 23 on the unmanned guided vehicle 14 in the retracted position starts to advance, the pinion gear 30 below the arm 26 meshes with the rack gear 41 of the die holder 35 in the retracted position, but the pinion gear 30 Since there is a resistance to the rotation of the device, both of them move integrally toward the mold take-out device 16, and the holder 35 comes into contact with the device 16 and stops. However, although the advancing / retreating member 23 advances further,
At this time, the pinion gear 30 is moved to the stopped rack gear 41.
The arm 26 engages with and moves forward while rotating, and the tip of the arm 26 engages the locking pieces 10 of the upper and lower molds 55 and 56 on the feeding table 77.
It will stop on the condition that it entered between 6 and 107.

Under this condition, the upper and lower driving means 29 act to cause the locking pin 24 to project vertically, and the upper and lower locking pieces 106, 10
Engage 7. Next, the stopper pin 91 fixing the upper mold 55 and the lower mold 56 is pulled in, and then the driving means 2
By the function of 5, the advancing / retreating member 23 starts to retreat. At this time, the new mold including the upper mold 55 and the lower mold 56 is also retracted,
Upper and lower guide rails 39 of the holder 35 in the forward position,
40 is approached and supported.

Even when the member 23 is retracted, the pinion gear 30 below the arm 26 meshes with the rack gear 41, the member 23 retracts together with the holder 35, and when the holder 35 comes into contact with the support base 31 and stops, the member 23 also falls. Stop, drive means 2
The upper and lower locking pins 24 are pulled in to separate the upper mold 55 and the lower mold 56 from the arm 26, and the member 23 is further retracted to the original position while rotating the pinion gear 30. Further, the carriage 27 is moved so that the empty mold holder 35 on the side of the mold holder 35 on which the new mold is placed is positioned immediately before the retracted arm 26.

By the above operation, the target die is taken out from the die take-out device 16 and the die holder 35 on which the die is placed.
Then, the transport vehicle 14 on which the empty die holder 35 is placed on the carriage 27 stops in front of the desired press machine 12.

As described above, when the transport vehicle 14 is stopped, the center of the empty mold holding tool 35 coincides with the center of the press machine 12. In this state, the advancing / retreating member 23 located at the position of the chain line in FIG. 2 starts to advance toward the pressing machine 12.

At this time, the upper and lower locking pins 24 at the tip of the arm 26 are retracted, and the locking pieces 106, 1 of the upper die 55 and the lower die 56 mounted above and below the press 12 are attached.
Between 07, the tip of the arm 16 enters.

Further, similar to the above-mentioned new mold take-out action, the pinion gear 30 at the lower portion of the arm 26 meshes with the rack gear 41 of the die holding tool 35 while the advancing / retreating member 23 advances as described above. Like the first arm 26
Then, the holder 35 integrally moves forward and the holder 35 comes into contact with the substrate 43 of the die set 42 and stops. Then, the pinion gear 30 rotates and only the advancing / retreating member 23 advances.

Under this condition, the upper and lower driving means 29 act to cause the locking pin 24 to project vertically, and the upper and lower locking pieces 106, 10
Engage 7.

Next, the clamp claws 49 and 50 that fixed the upper die 55 and the lower die 56 loosen, and then the driving means 2
By the function of 5, the advancing / retreating member 23 starts to retreat.

At this time, the used old mold including the upper mold 55 and the lower mold 56 is also retracted, and is advanced and supported on the upper and lower guide rails 39 and 40 of the holder 35 at the forward position. To be done.

Even when the member 23 is retracted, the pinion gear 30 below the arm 26 meshes with the rack gear 41, the member 23 retracts together with the holder 35, and when the holder 35 comes into contact with the support base 31 and stops, the member 23 also falls. One-stop drive means 29
The upper and lower locking pins 24 pull in to separate the upper mold 55 and the lower mold 56 from the arm 26, and the member 23 further retracts while rotating the pinion gear 30, and returns to the position of the chain line in FIG.

After the used old mold attached to the press 12 is removed by the above-mentioned operation, the driving means 20 is used.
By the action, the carriage 27 is moved so that the center line of the mold holder 35 having the new mold attached thereto coincides with the center line of the press 12.

Then, the advancing / retreating member 23 advances, the pinion gear 30 meshes with the rack gear 41 and advances together, and the holder 35 contacts the substrate 43 and stops, and then the member 23 rotates the pinion gear 30 and advances further. At the tip of the arm 26, the upper and lower molds 55, 56 mounted on the upper and lower guide rails 39, 40 are pushed onto the substrate 43 and the lower portion of the upper plate 45, and the lock pin 54 is projected at a predetermined position. Positioning the lower die 56 and at the same time the clamp claw 4
9 and 50 work to set the upper and lower molds 55 and 56 to the die set 4
Fix to 2.

In this way, after the new die is set on the press machine 12, the locking pin 24 is retracted and the advancing / retreating member 23 is retracted to the original position leaving the new die, and the carrier vehicle 14 follows the guide line 15. And moves back to the front of the mold removing device 16 in FIG. At this time, the center line of the mold holder 35 accommodating the used old mold and the center line of the feeding table 77 of the mold take-out device 16 are aligned with each other, and their heights are aligned with each other. The device 16 moves along the rail 66, and the lifting frame 70
Moves up and down.

Under the condition that the die holder 35 and the feeding table 77 are aligned with each other, the die holder 35 together with the old die is operated by the apparatus 16 by the same action as the action when the new die is mounted on the press machine. Of the mold 16 on the feeding table 77 of the device 16
After accommodating the old mold inside, the advancing / retracting member 23 and the mold holder 35 return to the inside of the support frame 21 while leaving the mold on the stand 77.

Under the condition that the old mold is accommodated in the accommodating portion 80 as described above, the magnetic sensor 74 provided on the side wall 79 on the stand 77 reads the mold identification code 105 on the side surface of the lower mold 56. , Its value is input to the control device 109. Under the condition that the value of the mold identification code 105 is input, the driving means 69, 73
Moves the device 16 and the elevating frame 70, and the feeding table 77
Is moved to a predetermined position of the mold storage shelf 11, that is, a position corresponding to the identification code 105 of the lower mold 56.

Next, the feeding table 77 advances and the traverse member 9 is moved.
6 moves, and the advancing / retreating member 94 advances under the condition that the arm 97 is positioned after the old mold, and the arm 97 moves the old mold including the upper mold 55 and the lower mold 56 into a predetermined position on the storage rack 11. After being mounted on the receiving members 101 and 102 at the positions, only the advancing / retracting member 94 and the arm 97 return to their original positions, leaving the upper and lower molds 55 and 56.

[0046]

[Effect] The present invention provides an automatic die change system,
A plurality of sensors are provided in the die accommodating portion of the die take-out device, and a die identification code utilizing magnetism is provided at a predetermined position of each die so that the used die is in the die accommodating portion. The mold identification code unique to the mold is read under the housed condition, and the mold is moved to the position corresponding to this identification code so that the mold can be stored at a predetermined position on the mold storage shelf. There is an effect that a large number of molds can be managed by a relatively inexpensive device.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment.

FIG. 2 is a side view of the vicinity of the press machine according to the embodiment.

FIG. 3 is a plan view of the above.

FIG. 4 is a front view of the press machine according to the embodiment.

FIG. 5 is a front view of the mold holder of the embodiment.

FIG. 6 is a side view of the above.

FIG. 7 is a front view of an embodiment of a mold take-out device.

FIG. 8 is a side view of the above.

FIG. 9 is a front view of the same mold accommodating portion.

FIG. 10 is a side view of the above.

FIG. 11 is a front view of the mold storage shelf of the embodiment.

FIG. 12 is an enlarged front view of the above.

FIG. 13 is an enlarged side view of the above.

FIG. 14 is a plan view of a conventional device.

FIG. 15 is a partially enlarged plan view of the above.

FIG. 16 is a plan view of another conventional device.

[Explanation of symbols]

 11 Mold Storage Shelf 12 Press Machine 14 Unmanned Transport Vehicle 16 Mold Extracting Device 35 Mold Holding Tool 55 Upper Mold 56 Lower Mold 70 Elevating Frame 74 Magnetic Sensor 80 Mold Housing 105 Mold Identification Code

Claims (1)

[Claims] 1. A plurality of pressing machines, a mold storage shelf for storing a plurality of molds, a mold take-out device located at the front of the mold storage rack, and a front part of the mold take-out device. It consists of an unmanned carrier that moves between the front parts of each press machine, and the desired mold taken out from the desired location of the mold storage shelf by the mold take-out device is placed on the unmanned carrier, After the carrier is run to just before the desired press machine, the action of mounting the mold on the unmanned carrier to the desired press machine, and taking out the mold on the desired press machine and placing it on the unmanned carrier Put
Move this automated guided vehicle in front of the mold unloading device,
In the automatic die change system that performs the action of taking out the die on the automatic guided vehicle by the die take-out device and returning it to a predetermined place on the die storage rack, the die identification using magnetism etc. for each die A code is attached to the die housing portion of the die take-out device, which is provided with a sensor for reading the identification code of the die housed in the die take-up portion, and the die take-out device based on the reading result of the sensor. A method for selecting a mold, which is operated to store a predetermined mold in a corresponding portion of the mold storage shelf.