JP2015003330A - Flexure processing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a flexure processing device which achieves effective utilization of a predetermined member by inhibiting interference between the predetermined member of an optical type safety device driving between the flexure processing device and a mold change device and a bridge, because the bridge installed between the flexure processing device and the mold change device is configured to flip up freely.SOLUTION: A mold transport vehicle 54 is traveled between a mold change device 51 disposed on a side part and a flexure processing device via a bridge 5 and mold change is performed in a flexure processing device 1. The bridge 5 is configured to flip up freely to the mold change device 30 side, and a roller 6 is disposed on a rear side of the bridge 5. In a state that the bridge 5 flips up, flip-up state detection means detects that the bridge 5 contacts to the mold change device 30 side.

Description

  The present invention relates to a bending apparatus for exchanging molds with a mold exchanging apparatus disposed on a side.

  Conventionally, an invention related to a bending apparatus that performs mold exchange with a mold exchange apparatus disposed on a side is disclosed in, for example, Patent Document 1 (Japanese Patent Laid-Open No. 2013-94787) described later.

  According to the present invention, by configuring the mold moving device 51 including the cart 54 (FIGS. 1 and 2 of Patent Document 1), the arm 56, the elevating / lowering part 56b, and the roadway part 52t, even a heavy metal mold is formed. Even so, the effect of facilitating the exchange of the mold is achieved (Patent Document 1 [0009]).

JP 2013-94787 A

  In Patent Document 1, a bridge (an extension of the pedestal carriageway 52t in FIG. 4 of Patent Document 1) is provided between the bending apparatus and the mold exchanging apparatus, and the mold transporter carrying the mold is carried. (Cart 54 in FIG. 1 of Patent Document 1) is allowed to travel.

  However, between the bending apparatus and the mold exchanging apparatus, for example, as shown in FIG. 1 of the present application, an optical safety device comprising a projector 2 and a light receiver 3 is provided on the upper table 12, and the side plate 17 Side guards 4 that can be opened and closed laterally may be provided as optional materials.

  In such a case, when the optical safety device moves up and down or when the side guard 4 opens and closes, it interferes with the previously described bridge 52t (FIG. 4 of Patent Document 1), and the original optical safety device or the like. Effective use of a predetermined member is hindered.

  An object of the present invention is to prevent the interference with a predetermined member such as an optical safety device driven between the two by allowing the bridge installed between the bending apparatus and the mold exchanging apparatus to be freely raised. An object of the present invention is to provide a bending apparatus that makes effective use of predetermined members.

In order to solve the above problems, the present invention as described in claim 1,
In the bending device 1 for exchanging the die by moving the die transporter 54 through the bridge 5 with the die changer 30 arranged on the side,
A technical means called a bending apparatus 1 is provided in which the bridge 5 can be freely raised to the mold exchanging apparatus 30 side.

  Therefore, according to the configuration of the present invention, the bridge 5 (FIG. 1) can be flipped up to the mold exchanging device 30 side, so that the limit switch LS serving as a flip-up completion detecting means can be used as the mold exchanging device. If it is provided on the side 30, the jumping completion signal JSG from the limit switch LS is input to the NC device 20 when the jumping up of the bridge 5 is completed and comes into contact with the mold exchanging device 30. Based on this, the machine can be operated (FIG. 6), the optical safety devices 2 and 3 are lowered, and the side guard 4 is closed. Since it is in contact with the 30 side, interference between the predetermined members such as the optical safety devices 2 and 3 driven between the bending apparatus 1 and the die changer 30 and the bridge 5 is prevented, and the predetermined members are effectively used. Can now be planned.

  Therefore, according to the present invention, by allowing the bridge installed between the bending apparatus and the mold exchanging apparatus to be freely raised, interference with a predetermined member such as an optical safety device driven between the two is prevented. And the effect | action and effect of providing the bending apparatus which aims at the effective utilization of this predetermined member are achieved.

  Furthermore, according to the present invention, if the roller 6 is provided on the back side of the bridge 5 (FIG. 4), even after the bending process (FIG. 7), the work W must be laterally cut (X-axis direction), Even if the workpiece W cut out to the back side of the bridge 5 (FIG. 8) that has been flipped up and is in contact with the die changer 30 is inclined, the workpiece W contacts the rotating roller 6. Since it passes in the state which was carried out, the effect | action and effect that this work W is not damaged are achieved.

1 is an overall view of the present invention. It is a figure which shows the relationship between the bending apparatus 1, the bridge | crosslinking 5, and the metal mold | die exchange apparatus 30 of this invention. It is the figure seen from the front side of the bridge | crosslinking 5 by this invention. It is the figure seen from the back side of the bridge | crosslinking 5 by this invention. It is operation | movement explanatory drawing at the time of the metal mold | die exchange by this invention. It is operation | movement explanatory drawing at the time of the machine operation by this invention. It is explanatory drawing when the workpiece | work horizontal penetration by this invention is required. It is operation | movement explanatory drawing at the time of workpiece | work horizontal extraction by this invention.

  Hereinafter, the present invention will be described with reference to the accompanying drawings by embodiments.

  FIG. 1 is an overall view of the present invention, and the illustrated bending apparatus 1 is, for example, a press brake.

  This press brake has side plates 16 and 17 on both sides (X-axis direction) of the machine body, and hydraulic cylinders 14 and 15 are attached to the upper portions of the side plates 16 and 17.

  With this configuration, for example, when the operator S steps on a foot pedal (not shown), the hydraulic cylinders 14 and 15 are operated, and the upper table 12 with the punch P, which is one mold, is moved up and down. It has become.

  Further, immediately below the upper table 12, a lower table 13 to which a die D as the other mold is mounted is provided.

  Further, an abutment (not shown) of the back gauge device is arranged behind the lower table 13, and the workpiece W is brought into contact with the abutment (not shown) for positioning. When the upper table 12 is lowered, the workpiece W is bent by the punch P and the die D.

  The bending apparatus 1 shown in FIG. 1 is a descending press brake, but may be an ascending press brake in which the lower table 13 moves up and down, and a die D on the upper table 12 and a punch P on the lower table 13. It may be attached.

  Further, for example, a projector 2 is attached to the left end of the upper table 12, and a light receiver 3 is attached to the right end of the upper table 12, for example, thereby constituting the optical safety devices 2 and 3.

  The laser light L from the projector 2 passes under the punch P and is received by the light receiver 3, and when the light is shielded by the hand of the operator S during the bending process, the upper table 12 stops suddenly and the work is stopped. The safety of the worker S is ensured.

  Further, a side guard 4 that can be opened and closed is provided on the side of the side plate 17 so that the hand of the worker S cannot be approached from the side by the side guard 4. Safety is ensured.

  A mold exchanging device 30 is disposed on the side of the bending apparatus 1, and a bridge (described later with reference to FIGS. 3 to 4) is provided between the mold exchanging apparatus 30 and the bending apparatus 1 described above. 5 is provided so that a mold transportation vehicle 54 on which a mold is mounted travels.

  The mold exchanging device 30 includes a mold vertical movement / rotation unit 31 provided on a pedestal 52 and a mold storage unit 32 provided below the pedestal 52.

  The above-mentioned mold up-and-down movement / rotation part 31 is moved up and down outside the pedestal 52 in a state where the mold carriage 54 mounted with the mold is held by the holding part 56c (the broken line part in FIG. 1). It is rotated about the axis C <b> 1 above the pedestal 52.

  As a result, the mold up-and-down movement / rotation unit 31 lowers the mold carriage 54 loaded with the mold to be used on the pedestal 52 and delivers it to the operator S, or on the contrary, mounts the used mold. The mold is returned to the original mold storage unit 32 from the mold transport vehicle 54.

  Further, the mold vertical movement / rotation unit 31 has a column 55 standing upward, a bearing unit 55a (FIG. 2) integrally attached to the column 55, and one end portion by the bearing unit 55a. Has an arm 56 rotatably supported with respect to the axis C1, a pole 56a erected upward at the other end of the arm 56, and an air cylinder 56b supported by the pole 56a.

  A holding portion 56c that holds the mold transport vehicle 54 is attached to the tip of a rod 56b1 that protrudes from the lower portion of the air cylinder 56b.

  Further, the mold storage unit 32 (FIGS. 1 and 2) is stored in a state in which the mold is stored in a stocker (not shown). DS (FIG. 3 of Patent Document 1) is used.

  Further, the die transporter 54 (FIG. 2) not only travels on the pedestal carriageway 52t by the front wheel 54b and the rear wheel 54c, but also is adjacent to the die by the auxiliary wheel 54f2 (for example, FIG. 13 of Patent Document 1). You can travel on the Dc.

  The details of the above-mentioned mold up-and-down movement / rotation part 31, the mold storage part 32, and the mold transporter 54 are disclosed in the above-mentioned patent document 1, and therefore detailed description is omitted (patent document 1). [0016] to [0045]).

  Hereinafter, based on FIG. 3 and FIG. 4, the bridge | crosslinking 5 by this invention is demonstrated.

  FIG. 3 is a view of the bridge 5 as viewed from the front side. The bridge 5 is attached to the mold changer 30 with, for example, hinges 8 and 9, and can be freely raised to the mold changer 30 side.

  The bridge 5 is composed of the first bridge member 21, the second bridge member 22, and the third bridge member 23, and is provided with a handle 5A.

  With this configuration, the operator S (FIG. 1) can hold the handle 5 </ b> A by hand and flip it up to the mold exchanging device 30 side (FIG. 6), or conversely return it to the bending device 1 side (FIG. 5).

  The second bridge member 22 constituting the bridge 5 has a function as a roadway on which the die transportation vehicle 54 travels. Therefore, as described above, the bridge 5 is returned to the bending apparatus 1 side to exchange the mold. When performing (FIG. 5), the front wheel 54b and the rear wheel 54c of the die transporter 54 pass over the second bridge member 22.

  On the other hand, FIG. 4 is a view of the bridge 5 as seen from the back side, showing a state in which the bridge 5 jumps up to the mold changer 30 side, and reinforcing members 24, 25, and 26 are stretched around the back side of the bridge 5. .

  A roller 6 is rotatably provided between the reinforcing members 24 and 25 at the same height as or protruding from the reinforcing members 24 and 25, and the bridge 5 that has jumped up is detected as a jumping state to be described later. The actuator 10 of the limit switch LS (FIG. 1) constituting the means is operated.

  The reason why the roller 6 is provided is that the back surface of the horizontally cut workpiece W is not damaged.

  That is, normally, after the bending process is finished, the upper table 12 (FIG. 1) is raised, and after the punch P that has been pressing the work W is lost, the work W after the work on the die D is removed by the operator. S takes out in front of him.

  However, when the workpiece W after bending has a U-shaped cross section as shown in FIG. 7 and the flange F at the front end enters the escape portion 27 of the punch P, the upper table 12 will be raised. Then, the punch P interferes with the workpiece W, and the punch P is caught on the workpiece W, and the worker S cannot take out the workpiece W in front of him as described above.

  Therefore, the work W (FIG. 8) must be cut out horizontally (in the X-axis direction), but in that case, the cut-out side to the back side of the bridge 5 in contact with the die changer 30 side in the state of being flipped up. Even if the workpiece W that has passed is inclined downward, the workpiece W passes in contact with the rotating roller 6, so that the workpiece W is not damaged.

  Further, after completion of the mold exchange (FIG. 5), the operator S (FIG. 1) jumps up the bridge 5 to the mold changer 30 side. At that time, the bridge 5 jumps up to the mold changer 30 side (FIG. 5). 4) operates the actuator 10 of the limit switch LS (FIG. 1) in order to detect the jumping state of the bridge 5 and enable the machine operation (FIG. 6).

  That is, as shown in FIG. 1, a limit switch LS that constitutes a flip-up state detection means is provided on the mold exchanging device 30 side, and the actuator 10 (FIG. 2) of the limit switch LS is located near the roadway 52t of the pedestal 52. Leave exposed.

  In this state, when the bridge 5 is flipped up and brought into contact with the mold exchanging device 30, the exposed actuator 10 is operated (for example, pressed) by the bridge 5 and the force acting at that time is transmitted to the limit switch LS. Since the flip-up state signal JSG from the limit switch LS (FIG. 1) is input to the NC device 20, the machine operation (FIG. 6) becomes possible based on this signal.

  For example, as shown in FIG. 6, the side guard 4 is closed and the optical safety devices 2 and 3 are lowered. At this stage, the bridge 5 is already in the flipped state as described above, and the mold exchanging device 30. It is in contact with the side.

  Therefore, according to the present invention, interference between the predetermined members such as the optical safety devices 2 and 3 and the bridge 5 is prevented, and the predetermined members can be effectively used.

The operation of the present invention having the above configuration will be described below.
The bridge 5 according to the present invention is originally laid in a state of straddling between the bending apparatus 1 (FIG. 5) and the mold exchanging apparatus 30. As described above, the mold is exchanged between the both apparatuses 1 and 30.

  However, when the operator S (FIG. 1) raises the bridge 5 to the mold exchanging device 30 side (FIG. 4) while holding the handle 5A (FIG. 3) in hand, it abuts against the mold exchanging device 30 side. As described above, when the bridge 5 presses the actuator 10 of the limit switch LS (FIG. 1), the jumping state signal JSG from the limit switch LS is input to the NC device 20. Mechanical operation (FIG. 6) becomes possible, the side guard 4 is closed, and the optical safety devices 2 and 3 can be lowered.

  At this stage, since the bridge 5 is already in the raised state and is in contact with the mold exchanging device 30 as described above, the interference between the optical safety devices 2 and 3, the side guard 4 and the bridge 5, etc. The conventional problem does not occur.

  Therefore, according to the present invention, the bridging 5 installed between the bending apparatus 1 and the mold exchanging apparatus 30 can be flipped up freely, so that the optical safety devices 2, 3, etc. that are driven between the two are predetermined. Interference between the member and the bridge 5 is prevented, and the predetermined member can be effectively used.

  Further, when the workpiece is pulled out horizontally, that is, the operator S (FIG. 1) holds the workpiece W (FIG. 7) having a U-shaped cross section in his / her hand and comes out of the punch P and the die D in the lateral direction (X-axis direction). For example, the workpiece W is inclined downward to come into contact with the back side of the bridge 5 shown in FIG.

  However, since the rotatable roller 6 is provided on the back side of the bridge 5, the workpiece W passes in contact with the rotating roller 6, so that the workpiece W is not damaged.

  Therefore, according to the present invention, if the roller 6 is provided on the back side of the bridge 5 (FIG. 4), even after bending (FIG. 7), the work W must be laterally cut (X-axis direction), Since the workpiece W passes (FIG. 8) in contact with the rotating roller 6, the workpiece W is not damaged.

  The present invention prevents the interference with a predetermined member such as an optical safety device driven between the two by allowing the bridge installed between the bending apparatus and the mold exchanging apparatus to be freely raised. It is used in a bending apparatus that makes effective use of, and is also very useful when used not only in a descending press brake but also in a lifting press brake.

DESCRIPTION OF SYMBOLS 1 Bending apparatus 2, 3 Optical safety device 4 Side guard 5 Bridging 6 Roller 8, 9 Hinge 10 Limit switch LS actuator 12 Upper table 13 Lower table 13t Table roadway 14, 15 Hydraulic cylinder 16, 17 Side plate 20 NC device 21 First bridge member 22 Second bridge member 23 Third bridge member 24, 25, 26 Reinforcement member 27 Escape part 30 Mold changer 31 Mold vertical movement / rotation part 32 Mold storage part 52 Base 52t Base carriage 54 Gold Type transporter 54b Front wheel 54c Rear wheel
54f2 Auxiliary wheel 55 Post 55a Bearing portion 56 Arm 56a Pole 56b Air cylinder 56b1 Rod 56c Holding portion C1 Axis D Die P Punch

Claims (3)

In a bending machine for exchanging molds by running a mold transporter via a bridge with a mold exchanging apparatus arranged on the side,
A bending apparatus characterized in that the bridge can be flipped up to the mold changer side.   The bending apparatus according to claim 1, wherein a roller is provided on the back side of the bridge.   2. The bending apparatus according to claim 1, further comprising a flip-up state detecting means for detecting that the bridge is in contact with the mold exchanging device side in a state where the bridge is flipped up.

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