JPS6163318A - Method and device for supporting and taking out plate material in press brake - Google Patents

Abstract

PURPOSE:To perform automatically the taking out of a work piece by separating a follow-up rack from a press brake with supporting a work piece with the condition of inclining the rack and with descending the work piece. CONSTITUTION:A follow-up rack 41 is inclined largely further with descending a lower die 11 as well as absorbing a work piece W by an absorbing device 169, also with operating again a follow-up cylinder 109 at the completion time of the bending of the work piece W to the prescribed angle. Thereafter a sliding rack 143 is descended with operating a slide driving device 161 and the whole follow-up supporting device 1 is separated from a press brake 3 with operating a driving device 49. The taking-out of the work piece W from the press brake 3 is thus performed automatically and easily even in case of the length L of the rising part of the work piece W being longer than the distance H between upper die 7 and lower die 11.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a method and apparatus for supporting and removing plate material to be bent by a press brake.

(1)) Prior Art Wi When a plate material is bent into a ■-shape using a press brake, the edge of the plate material quickly jumps up, which is dangerous. In addition, when the clamping pressure on the plate material by the upper and lower dies of the press brake is released in order to take out the temporary material after the bending is completed, the plate material, which has been bent into the shape of a letter ■ and bounced, falls over. It is a danger.

Therefore, in the past, various follow-up support devices have been developed that support the board by following the jump of the board during bending, and when the bending is completed, the board is sucked and held in a horizontal position. .

(C) Problems to be Solved by the Invention Conventional follow-up support devices merely hold a bent plate in a slanted state until it returns to a horizontal state. Therefore, for example, when a plate is bent at right angles and then the plate is tilted down to a horizontal position, the height of the rising part due to the bending is greater than the distance between the upper die and the lower die in the press brake. If the press brake is also large, it is difficult to take out the plate material to the front side of the press brake.

Therefore, when the height of the rising portion of the plate material is large as described above, the plate material is removed from the press brake by moving the plate material in the longitudinal direction (lateral force direction) of the upper and lower dies.

In other words, in the past, safety was improved by holding the bent and slanted board until it became horizontal with a follow-up support device, but the edges of the board were large. In some cases, the plates must be moved laterally by hand, which poses a problem in improving machining efficiency.

<dJ Means for Solving the Problem In order to address the conventional problems as described above, the present invention provides a method for folding even if the height of the rising part of the plate material is greater than any distance between the upper mold and the lower mold. After bending, the plate material can be automatically taken out to the front side of the press brake using a follow-up support device. In other words, when bending a plate using the upper and lower dies in a press brake, the support base that supports the plate is tilted upward in response to the jump of the plate, and the plate is adsorbed to the support when the plate is finished bending. In response to the attack, the knee mold and the lower mold are separated, and the +'+1 support table is further tilted upward, and the support table is moved downward in the direction of inclination and the support table is moved in the direction away from the press brake. The plate material is taken out from between the upper mold and the lower mold by relating them to each other.

<e> Operation When a plate material is bent by the upper die and lower die in the press brake, the support base tilts to follow the jump of the plate material,
At the end of bending the plate, the plate is adsorbed onto the support base. Thereafter, the clamping pressure on the plate material by the upper mold, the lower mold, etc. is released, and the support base is tilted even more sharply, so that the inclination of the bent rising portion of the plate material becomes smaller. If the support base is moved away from the press brake by an appropriate distance while the slope of the rising part of the plate material is reduced, the quality-sensitive part of the inclined rising part will interfere with the upper mold, so the above interference occurs.1) By moving the support stand further in the downward direction, the distance between the rising portion of the plate material and the upper die becomes larger again, and the support stand can be moved further away from the press brake.

However, by increasing the inclination of the support stand, reducing the inclination of the rising part of the bent plate material, and appropriately relating the downward movement of the support stand and the movement in the direction away from the press brake, ) Even if the height of the rising portion of the opposite phase is greater than the distance between the upper die and the lower die, the plate material can be taken out to the front side of the press brake.

(f) Embodiment Referring to FIG. 1, a follow-up support device (not indicated by general reference numeral 1) follows the jump when a plate-shaped workpiece W is bent by the press brake 3, and moves the workpiece. W
The press brake 3
It is placed on the front side.

The press brake 3 has an upper die 7 on the top of a C-shaped frame 5.
The frame 5 is integrally equipped with a fixed apron 9 with a
A movable apron 13 supporting a lower mold 11 which cooperates with the upper mold 7 to bend the workpiece W is mounted on the lower side of the movable apron 13 at 51'? It's leaking freely. The movable apron 13 is raised and lowered by the operation of a hydraulic cylinder for raising and lowering (not shown).
i? As a result of i'c, ail DIJ is performed (and at the same time, it is controlled by depressing the knob 15).

As is already clear, the upper mold 7 and the lower mold 1'1 are engaged with each other by raising the movable apron 13, and the upper mold 7 The workpiece W is bent by the lower die 11 for 1''7.

The movable apron 13 in the press brake 3 has an elevating frame that is connected to the follow-up support device 1, and the movable apron 13 has an elevating frame that follows the upper arm of the movable apron 13, as will be explained in detail in the next section.
An epigastric regulating brace 17 is attached so as to restrict the free rise of the elevating platform. J: In detail, a bracket 19 is attached near the center of the movable apron 13 in the longitudinal direction, and a lifting block 21 is screwed onto this bracket to move it up and down. screw rod 2
3 and a guide bar 25 are supported vertically.

The screw rod 23 is configured to be rotated by a knob 27 rotatably supported on the bracket 19.

Further, a regulating plate 29 that projects horizontally in the direction of the follow-up support device 1 is pivotally supported on the lifting block 21 so as to be slidable only in an upward direction. That is, the regulating plate 29 is attached to the lifting block 21 via a hinge member 31 such as a hinge so that it can freely rotate upward from a horizontal state, but cannot slide downward. (It is supported by J3 and regulation board 2
One is biased to maintain a horizontal position by suitable means such as a weight or a suitable torsion spring.

As is clear from the above 1iIS configuration, by rotating the rII rod 23 with the knob 27, the transfer block 21 and the regulation tri 29 can be adjusted up and down, and as will be described later, the lower mold 11 can be moved up and down. The workpiece W to be positioned can be supported horizontally by the follow-up support device δ1.

Referring to FIGS. 1 and 2, the 1111 tracking support device 1 includes a movable trolley 35 that is movable on a plurality of horizontally laid rails 33, and a movable trolley 35 located in the front direction with respect to the movable trolley 35. A movable pedestal 37 that can be freely adjusted, and a movable pedestal 58 that can be vertically movable with respect to the movable pedestal 37. It consists of three lowering racks and a follower rack 41 which is supported by the lowering rack 39 and supports the workpiece W by following the jump during the bending process of the workpiece W.

More specifically, the movable trolley 35 has, for example, a rectangular frame made of channel material, and a plurality of wheels 43 that can freely move on the rails 33 are rotatably mounted on both sides thereof. An appropriate rotating body 45 such as a sprocket or a boolean is integrally attached to the axle of the wheel 43 at an appropriate position. 1. Appropriate drive device 49. It is shi. Further, in the movable trolley 37, an appropriate drive source unit 51 including, for example, a hydraulic pump shade is installed independently and separately from the drive source of the press brake 3.

As is clear from the above configuration, by appropriately driving the drive device 49, the movable platform m35 moves in the front direction (left and right direction at d3 in FIG. 1) along the rail 33,
The approach technique 1 is opposite to the press brake 3.

The approach position of the movable cart 35 to the press brake 3 is controlled by stoppers 53 installed at appropriate positions ii, :i of the rail 33 cap.

The drive device 7r49 is controlled and driven by an appropriate control device such as a numerical control Kr, and can freely control the moving speed of the moving cart 35. Furthermore, the position 9 of the movable carriage 35 may be configured such that an appropriate detector such as a length measuring device ζl or a pulse encoder is installed to detect - at the position fh of the movable carriage 35, or the rail 33 along? 1 by an appropriate configuration such as arranging a detector or dog such as a 9-loss limit 1 switch or a proximity switch, and installing the dog or detector on the movable trolley 35.
I can do three things. The position information of the movable cart 35 can be used, for example, to control the speed of the movable cart 35, and as the lowering timing 1a of the workpiece W when taking out the workpiece W from the press brake 3, as will be described later.

The movable pedestal 37 is formed into a rectangular frame similar to the movable carriage 35, and is arranged inside the movable carriage 35. Guide bars 5 are provided on both sides of the movable frame 37, respectively.
5 is -1)! There are 11 guide bars per unit, and each guide bar has 55
is movably supported by a plurality of pairs of support rollers 57 rotatably mounted inside both sides of the f'3 carriage 35. A nut member 59 is attached to one end of the 12 movable units 37, and the five nut members include:
It extends parallel to the rail 33 and rotates around the moving trolley 35.
1rI, the freely supported adjusting screw 61 is meandering.

With the above configuration, the position of the movable pedestal 37 can be adjusted in the forward or backward direction with respect to the movable cart 35 by appropriately turning the adjusting screw 61. That is, even if the closest position of the movable platform 35 to the press brake 3 is arbitrary,
The distance between the press brake 3 and the movable frame 37 can be adjusted to a desired distance.

Supports 63 such as channel materials are erected on both sides of the edge of the movable pedestal 37 on the press brake 3 side, and the elevating pedestal 39 is provided between both branches 63 so as to be movable up and down. ing. More specifically, vertical guide posts 65 are integrally attached to the inner surfaces of both branches 63, and multiple pairs of support rollers 67 provided on the three elevating frames
The three hanging frames are provided so as to be able to move up and down by means of the structure (1, 1, i) which held the sword id boss 65.

What about De1 landing platform 33? ,! 2 pairs of support rollers 6
A pair of glued plates 69 leaking from 7 are connected together at 6 on the side 71 of the channel shrine, and there is a gap between the beam side 71 and the movable pedestal 37. is 7
An il lowering cylinder 73 is interposed.

Therefore, by appropriately controlling the stomach descent cylinder 73, the elevating platform 39 can be adjusted to nI';I as appropriate.

The lifting platform 39 is connected to the movable apron 1 of the press brake 3.
A cylinder control device 75 is provided to control the oil level of the lowering cylinder 73 so as to follow the rise of the cylinder 3. More specifically, a control 21I valve 77 for controlling the operation of the lifting cylinder 73 is attached to the beam member 7'1, as shown in FIG. This control valve 77 has 1
When the freely movable spool 77S is in a protruding state, pressure oil from a pressure source such as a hydraulic pump is supplied into the lifting cylinder 73 to control the lifting cylinder 73 so as not to raise the lifting frame 39. Further, the control valve 77 controls the lifting cylinder 73 to stop the lifting and lowering of the three lifting frames when the spool 778 is in the neutral position, and further controls the lifting cylinder 73 to stop the lifting and lowering of the three lifting stands when the spool 778 is in the neutral position. The three control cylinders 73 for descending and sliding and ascending by their own weight.

Therefore, the movable apron 1 in the press brake 3
The spool 77 of the 11 control valve 77 is linked to the rising operation of 3.
By adjusting the position of 3 appropriately, the movable apron 13
The elevating frame 39 can be raised in accordance with the rise of the lift frame 39.

In order to control the position of the spool 77S of the control valve 77 in accordance with the rise of the movable apron 13, the control valve 77
The bracket 79 attached to the base has the spool 7 near the base.
The swinging rod 81 in contact with 7S can swing up and down with a 1μ valley. A mini-cylinder 83 is attached to the tip of the swinging gear 181, and the tip of the piston rod 83P of the mini-cylinder 83 comes into contact with the first surface of the regulation plate 29 of the front lever 1 rise regulation neck 17. are pressed against each other.

Therefore, the movable apron 1 in the press brake 3
When the regulating plate 29 rises as the number 3 rises, the swinging rod 81 is no longer restricted by the regulating plate 29 and can swing upward. Therefore, the spool 778 of the control valve 77 is projected, and the lifting cylinder 73 is activated. The lifting cylinder 73 is controlled via the vibration control device 17, the swinging rod 81, and the control valve 77''!F of the press brake 3, and moves up and down in accordance with the rise of the movable apron 13. The three frames are raised.In addition, when the movable apron 13 suddenly stops rising, the regulation plate 2 in 1jn
The movable apron slides upward against the effort to the horizontal position and absorbs the grass, and then the ascent of the lower platform 9 is stopped. 13
The lifting platform performs the ``11:'' sudden 63 steps to raise the platform, and the lifting platform 39 can be stopped with less shaking.

Also, the screw 1 henrod 83 of the Oa mini cylinder 83
With P extended or retracted Δ7, what's next! - By bringing the 'i' part into contact with the regulation plate 29],
'Rr'F) 39 can take two-stage positions i and W/ with respect to the movable apron 13. In other words, (while holding the follower stand 41 in a horizontal state and moving it up and down 11
For example, when the lower die 11 is a lower die that can perform bending and hemming, the workpiece W can be moved to the bending tooth position and the hemming height position.・] Accordingly, there are 10 that can be supported horizontally.

The follower frame 41 supports the workpiece W in accordance with jQ of the workpiece W being bent by the press brake 3, and slides and tilts around the shoulder of the V groove in the lower mold 11. It is tiltably supported by the elevating frame 39 via a link □ structure 85. Link(
Each link 485 consists of a first link 87, eight second links, a third link 91, and a fourth link 93 in pairs, and the base of the first link 87 is connected to the six side plates of the three elevating frames. is pivotally supported via a pivot 95. The base of the 52 link 89 parallel to the first link 87 is pivoted to the side plate 69 via the section 97.
The bases of links 91 and 93 of X4 are
199, 101) to the Q follower frame/1.1 (attached. The tip of the first link 87 and the fourth link 93
through the bottle 10.3 and the second link 8.
9 and the tip f11i of the third link 91 are connected to the bottle 1.
05, and furthermore, the first link 87
Which central part of the third link 91 connects via the bin 107 (1
The base is connected to the base. Rinawamo Link 1 Reed Yoko 85 has a configuration in which two parallel links are connected.

Link Bl <F: The following frame 41 supported by 85 is used to bend the workpiece W) Q
A follow-up cylinder 109 is therefore provided for tilting. More specifically, the follow-up cylinder 109 is supported by a bracket 113 via a hinge pin 111 for free JZ movement, and is attached to the beam member 71 of the elevating frame 39 by the bracket 113. The following cylinder 109
The piston rod 109P is pivotally connected to the follower frame 41 via [1115].

With the above configuration, the follower frame 41 is slid and tilted by operating the piston rod 109P of the follower cylinder 109. At this time, piston rod 109P
J: To control the moving speed of the following frame 41 and make the sliding speed of the follower frame 41 match the jumping speed of the workpiece W.
By adjusting the state of engagement between the upper die 7 and the lower die 11 of the press brake 3 according to the angle of inclination of the follower frame 41, the follower frame 41 always supports the workpiece W.

11r1 In order to detect the inclination angle of the follower frame 41,
The tilt angle detection device 117 is sunk. More specifically, a detection cylinder 121 is vertically attached to a support plate 119 that is 1 inch perpendicular to the side plate 69 of the elevating frame 39, and a connecting member is attached to the piston rod 121P of the detection cylinder 121. 123 taken horizontally A・1
Kete d9. A rack rod 125 is provided vertically on this connecting member 123, and the rack rod 125 is engaged with the rack rod 125.
7 is connected to a detector 129 such as a pulse encoder attached to the support plate 119. Furthermore, the connecting member 123
A swing block (not shown) that rotatably supports a plurality of contact rollers 131 is swingably supported.

The contact roller 131 can freely contact the lower surface of the flange portion 133F of the detection plate 133 attached to the second link 89, and is brought into contact with the flange portion 133F by the action of the detection sill 121. Detection plate 1
The flange portion 133F of No. 33 is set flush with the table surface of the follower frame 41. In addition, support 1. A limit switch 135 is attached to the I temporary 119 which, when operated by the connecting member 123, causes the IYr stomach 4 lowering cylinder 73 to move downward.

With the above configuration, when the following cylinder 109 is created and the following pedestal 41 is inclined to follow the workpiece W, the contact roller 131 is moved to the flange portion 133F of the detection plate 133 by the action of the detection sill 121.
By touching the rack rod 125,
The detector 129 is rotated via the pinion 127, and the inclination angle of the flange portion 133F, W! g Then, the (1r! oblique angle and inclination speed of the follower frame 41 will be constantly detected. Therefore, using the detector 5-shi of the detector 129, the movable apron 13 attached to the press brake 3 will be detected.
It is possible to control the aU of , and to perform accurate tracking. In other words, the manner of engagement between the upper die 7 and the lower die 11 in the press brake 3 d3 can be controlled according to the inclined angle layer or the following speed of the follower frame C41.
It is possible to solve the problem that the jump of the workpiece W follows with a large delay.

In order to set the maximum inclination angle of the follower frame 41 as necessary, a pivot 9 is provided on one of the pair of second links 89.
An arc-shaped dog brake 136 centered at 7 is the attachment point. The dog plate 136 is provided with an arcuate slit so that the dog 137 can be freely adjusted in size. On the other hand, on the side plate 69 of the elevating frame 39, there is a limit switch operated by the dog 137 or a sensor for detecting a proximity switch.
: 139 or installation. When this detector 139 detects the dog 137, it stops the operation of the follow-up cylinder 109 and changes the inclination of the follow-up frame 41 to f;', lt:
T! 1. Therefore, the dog 137 and the detector 139 add t: L frame 4
The lil large term of 1 can be determined as a large angle oblique angle.

As is clear from FIGS. 1 and 2, the following mount 41 includes 13 mount bases supported by the link Ll'ths 85, and 1 movable mount supported on the mount base 139. It is composed of a pedestal 141, an 18-moveable pedestal 143 movably supported by the oscillating pedestal 141, and the like.

The swing frame 141 has double plate grooves on both sides, and has an appropriate number of 'A! , Kei pre-keiage rate 141
Frame 1 connected by C? '; Forms aM. This one
The side of the movable frame 141 extending from the press brake 3 is connected to the frame base 139 via the frame 61114.5.
The press swing S side of the swing mount 141 is swingably supported by the mount base 139 via a bullet 1ff 147. At 4 yuan, the trestle base 139
A storage cylinder 151 equipped with an adjustment screw 149 is attached to the end of the press brake 3 side, and a spring-like bullet 147 loaded in this storage cylinder 151 is attached to the swing frame 1/
It supports the lt1 joint bottle member 153 attached to 11. Moreover, when the following pedestal 41 is horizontal, the swing pedestal 141
It is supported by a support block 155 attached to the third link 9'1 of the link compensation ti'785.

Due to the above (jl; configuration), the following cylinder 1
When the follower frame 41 is gradually tilted by the operation of 09, the component force of the weight of the swing frame 141 acting on the bullet 1;
The press brake 3 side of is gradually pushed forward by the bullet gx 1 /+ 7, causing a roar. Therefore, for example, when the follower frame 41 is in a tilted state, the swing frame 141
The lower side of is pushed toward the press brake 3 side and becomes Ef,X which supports the workpiece W, and ; can be prevented.

The sliding frame 14C3 is formed by bending both sides of the f-plate material downward, and a long hole 1551-1 is formed in the guide plate 155 for multiple use provided on the lower surface. .In this elongated hole 1551-1, the swing frame 1
A guide roller 157 rotatably supported by 41 is fitted. Moreover, between the bracket 159 provided on the first movement frame 143 and the connection plate 141C, a first movement drive device 161 for sliding the surrounding movement R stand 143 is provided.
is the arrangement 6shi.

Although the 1111 dynamic drive unit 161 is exemplified as a cylinder device in this embodiment, it is also possible to use a screw 4M and a servo motor or the like.

As understood from Suzunari in Section III above, by appropriately operating the 1:1j dynamic drive unit 161, the swinging frame 14 is
1, move the sliding frame 143 to 11 by lTj movement.

Although the details are omitted, 1 behavior drive device 161
is related to the control of Pβ movement 4 and 4 position/I 9 mentioned above (
It is controlled as appropriate.

1) In the 1st moving frame 143 in a. ! ,! The divided table 163 divided into several parts is attached to the stone surface and the position can be adjusted freely.In other words, each divided table 163 has a long hole 16 in the bracket part 165 provided on the lower surface of the divided table 163.
5H is formed, and each divided table 163 is attached to one movement frame 5143 by a fastener 167 such as a bolt passed through this elongated hole 1654. , a suitable dividing table 163 is provided with a suction device 169 for sucking the workpiece W. The adsorption device 169 has 11
Basically, it consists of electromagnets, vacuum force, knobs, etc.

In the above configuration, as shown in FIG. 1, the workpiece W is placed across the lower mold 11 when the follower frame 41 is in a horizontal state. After that, press brake 3
When the movable apron 13 is raised, the movable apron 1
3, the elevating frame 39 rises to hold the workpiece W horizontally.

When the workpiece W is bent open by the upper die 7, lower die 11, etc. in the press brake 3, the follower cylinder 109 is activated, and the follower frame 41 follows (IT1 is tilted). The start of operation is caused by a change in the pressure horn in the hydraulic pressure 1ffi'iM that operates the movable apron 13 that goes down to the press brake 3, or by detecting that the workpiece W has been removed from the dividing table 163 (from the leather). In particular, it is important to control the situation.

Finished bending the workpiece W into a predetermined corner (Δ in Fig. 1)
Then, the workpiece W is suctioned by the suction device 169, the lower die 11 is lowered, and the follow-up cylinder 109 is activated again to tilt the follow-up pedestal 41 even more. After that, I bought a decoy drive 16
1 to properly lower the sliding frame 143 (state B in FIG. 1) By forming the shape C in Fig. 1, the unevenness of the vertical burrs of the workpiece W is aligned with the upper die 7 and the lower die 1.
1, the workpiece W can be easily and automatically taken out from the press brake 3 even if the distance H between the workpiece W and the press brake 3 is larger than the distance H between the press brake 3 and the press brake 3.

! Referring to FIG. 73, a pulse encoder 171 that appropriately detects the lifting speed or position of the movable apron 13 is connected to a first encoder interface 173, and the signal from the pulse encoder 171 is connected to the first encoder interface 173. In the encoder interface 173, it is converted into a pulse signal representing the vertical movement speed of the movable apron 13, and is output from the (→) terminal and the (-) terminal of the first encoder interface 173. The (-) terminal and (-) terminal of this first encoder interface 173
) terminals are the up terminal of the first counter 175,
are connected to the down terminals respectively, and the first. Second
These are individually connected to the OR circuits 177 and 179.

capability, the detector 129 is connected to a second encoder interface 181 and the 13
J3 to the second encoder interface 181.
The pulse signal does not represent the descending speed of the follow-up frame 41, but is converted into a pulse signal, which is output from the (+) terminal and the (-) terminal.

, the (+) terminal of the second encoder interface 181 is connected to the first frequency divider 183, and the (-) terminal is connected to the second frequency divider 185. The second frequency divider 185 is connected to the first OR circuit 177.

Top 171m1. Second frequency division r: 1183, 185 c,
Both perform the same processing function, and based on the input of condition settings from the computer-like controller 187, the correlation between the vertical speed of the follower frame 41 and the vertical speed of the movable apron 13 is established. The first frequency divider 183 outputs a number of pulse signals corresponding to the corrected rising speed of the follower frame 41 to the second OR circuit 179, and the second frequency divider 185 From now on, follow! The pulse signal corresponding to the corrected descending speed of 12 cars 41 is the first OR[n]
The signal is output to path 177.

The first OR circuit 177 is connected to the down terminal of the second counter 18, and the second OR circuit 179 is connected to the up terminal of the second counter 189. /Δ converter 191 by 1g. This D/Δ] bar 191 is connected to an appropriate driver 193, and the driver 193 is connected to the movable nib [1 n1
Lifting pressure cylinder that lifts and lowers 3 (not shown on page 3)
1' is connected to an operation control device 195, such as a valve, for controlling the movement.

Due to the above Yusei, movable apron 13J3 and follower frame 4
1, the number of pulse signals J5 corresponding to the corrected rising speed of the follower frame 41 and the number of pulse signals corresponding to the rising speed of the movable apron 13 are input to the two up and down terminals of the second counter 18, respectively. be done. Also,
When the movable apron 13 and the follower frame 41 are lowered, the up terminal and the down terminal of the second counter 189 receive pulse signals J'3 of the number corresponding to the lower P131 degrees of the movable apron 13 and the corrected lowering speed of the follower frame 41, respectively. A corresponding pulse signal is input.

(Therefore, the second counter 189 is the movable apron 13
What is the vertical speed of the movable 1-pron 13 at the top li''1 of d3 and the follow-up frame/11 and when it is lowered? The following pulse CR is output according to the speed difference from the Ifr speed. The pulse signals from the 18 second counters are supplied to the driver 193 via the D/Δ converter 191.The driver 193 outputs the pulse signals from the second counter 189 to zero without showing any speed difference. Via the operation control device 19]5, the raising and lowering operation of the movable apron 13 is controlled (1), that is, the raising and lowering speed of the movable apron 13 is controlled in accordance with the raising and lowering speed of the follower frame f341.

The first counter 175 inputs a number of pulse signals corresponding to the vertical speed of the movable apron 13 from the second encoder interface 173, and accumulates the pulse signals to adjust the vertical position i1 of the movable nib [1 n 13].゛? is being detected. The first counter 175 is connected to a comparator 197, and the eight comparators 197 are connected to the side (311 device 187).
The detection value of the vertical position of the movable apron 13 detected in the count 175 and the value entered in advance in the BJ mli neck 187]
j The set value of the set stop position of the 6F movable apron 13 is compared in the comparator 197, and when the detected value and the set value match, the lifting and lowering operation of the movable apron 13 is stopped. The ffi signal is output to the control device 187, etc., and the lifting and lowering operation of the movable apron 13 is stopped.

Referring again to FIG. 3, an appropriate setting data input section 199 such as a numeric keypad or a tape league is connected to the control device 187, which is comprised of an appropriate combination coater, etc., and also displays input data. device 201 is connected. Furthermore, in ``Alcohol Device'' 187, n
jf moving table r123517) The position detection device IF 203 for detecting the movement position and the command distribution unit 205 are connected as appropriate. The old order distribution department 205 controls IIl equipment 1
The command signal from 87 is transmitted to, for example, the first drive control device 207, such as a motor driver that controls the four drive devices, and the follow-up Schilling 109, l: Dynamic N! fJI Hi
161'; To (7) Work 1 EIJ Control the appropriate valve actions 2nd. Third drive control device δ20.
9.217.

Therefore, for example, a stop signal from the comparator 197 or a signal from a suitable detector causes the workpiece W to be
When it is detected that the bending process has been completed, the control device 1
According to the command 87, the workpiece W is attracted to the follow-up frame 41, and the follow-up cylinder 109 is operated via the drive control device 209 of XX2.
As described above, the follower frame 41 is tilted significantly. After that, the first. Through the third drive control device 207.21.1, the drive unit 49 and the moving unit 161 are operated as appropriate to lower the workpiece W and move the moving cart 35. be. J3, the operation of the drive device 49 and the 11j dynamic drive headpiece 161 is based on position detection)! in2
It is controlled as appropriate in relation to the detected position of the movement θj stand 35 in J:03. , as described above, the drive device 4
9 and the rental drive device 161 as appropriate, take out the workpiece W forward from between 7 and the lower mold 11 above the press brake and move it to this position. Detect the position that the cart 35 has moved. As soon as the mounting Fr 203 detects, the moving trolley 3
5 is stopped, and the jΩ slave frame 41 returns to the original water S.
The workpiece W is lowered to the +7-shaped r island, and the neck suction of the workpiece W relative to the follower frame 41 is released.

(g) Effects of the Invention As may be difficult to understand from the description of the embodiments, according to the present invention, the follower frame is tilted more than the predetermined bending angle! Since the workpiece is supported and the follower frame is moved away from the press brake while lowering the workpiece, the height of the rising part due to bending of the workpiece is the same as the upper and lower molds of the press brake. The workpiece can be automatically removed from the press brake even if the distance is larger than the distance from the mold.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments.

[Brief explanation of the drawing]

Fig. 1 is a side view of the follow-up support device, Fig. 2 is a view along the ff-]Ti gland in Fig. 1, and Fig. 3 is a block diagram showing the beating circuit in 1j■δ. be. 3...Press brake 7...Upper 5th cylinder 11...-
``Fgu/'11...Following stand 355...Moving stand E
E! 39... - Elevating FI stand 169... Adsorption device
143...1 work play 1-161...18 movement drive) shi stomach'-, yo1

Claims (2)

[Claims] (1) When bending a plate using the upper and lower dies in a press brake, the following frame that follows and supports the plate is tilted upward in response to the jump of the plate, and when the plate is finished bending, the plate is placed on the follower frame. After adsorption, the upper die and the lower die are separated and the follower frame is further tilted upward, and the movement of the follower frame in the downward direction of the inclination is associated with the movement of the follower frame in the direction away from the press brake. A method for supporting and taking out a plate material in a press brake, characterized in that the plate material is taken out from between the upper mold and the lower mold. (2) A movable trolley installed in front of the press brake so as to be movable in the front and rear directions is equipped with an elevating frame that rises and falls integrally with the movable apron of the press brake, allowing the upper and lower molds of the press brake to move up and down. A follow-up frame for supporting the plate material by following the jump of the plate material when the plate material is bent is installed on the elevating frame so as to be tiltable, and an operation for tilting the follow-up frame further after the bending of the plate material is completed. A sliding plate equipped with a suction device capable of sucking a plate material is provided so as to be slidable in the direction of inclination of the follower frame, and a sliding drive device is provided for sliding the sliding plate. A plate material support and take-out device in a press brake.