JP2007007689A - Press - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To securely prevent the lowering of dies in a state where doors provided around dies are opened. <P>SOLUTION: Hinged type doors 50 are provided so as to be freely openable/closable around the space between dies. In accordance with the opening of each door 50 to the outer part, each suppression block 40 moves to a direction made close to the side of the space between the dies, moves to a lowering suppression position, and suppresses the lowering of the upper die 30 in a state where each door 50 is open. In accordance with the closing of each door 50, each suppression block 40 is separated from the space between the dies, moves to a lowering allowable position, and allows the lowering of the upper die 30 in a state where each door 50 is closed. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a press apparatus for pressing a metal plate or the like.

  As a pressing device, there is a configuration in which a door made of a transparent plate is provided so as to be freely opened and closed around a die to be pressed. In this press apparatus, an open / close detection sensor is provided on the door, and when the door opens, this is detected by the open / close detection sensor to stop the operation of the press apparatus.

  Such a press apparatus is disclosed in Patent Document 1, for example.

JP-A-6-15493

  However, the press device stops the operation of the press device by electrical control. For this reason, for example, when an electrical trouble occurs due to some unforeseen circumstances, the mold may be lowered even when the door is open.

  Then, an object of this invention is to prevent a metal mold | die lowering more reliably in the state which opened the door provided around the metal mold | die.

  The press device according to the present invention includes a lower mold, an upper mold that moves up and down so as to approach and separate from the lower mold, and a space between the molds between the lower mold and the upper mold. A door that can be freely opened and closed, and a lowering prevention position that prevents the upper mold from being lowered in conjunction with the opening of the door, and is moved in conjunction with the closing of the door. A descent restraining member that moves to a descent allowable position that allows descent.

  In this case, the door is a hinged door that is openable and closable around a rotation axis around the space between the molds, and the lowering suppression member is linked to the opening and closing of the door. By rotating around, it may reciprocate between the lowering suppression position and the lowering allowable position.

  Further, the vehicle may further include obstacle detection means for detecting an obstacle in an opening opened and closed by the door, and the door may be opened in such a manner that the door is detected as an obstacle by the obstacle detection means. Good.

  Furthermore, a light detection means for detecting the open / closed state of the door based on the presence or absence of detection light, and a contact-type detection means for detecting the open / closed state of the door based on a change in the contact state accompanying the opening / closing of the door. When the door is determined to be closed based on the detection results of both the light detection means and the contact detection means, the press operation accompanied by the lowering of the upper mold is controlled to be possible. May be.

  Moreover, you may further provide the adsorption | suction means which detachably adsorb | sucks and hold | maintains in the state which opened the said door.

  According to the press device configured as described above, a lower mold, an upper mold that moves up and down so as to approach and separate from the lower mold, and a gap between the lower mold and the upper mold A door that opens and closes the space between the molds, and moves to a lowering prevention position that prevents the upper mold from descending in conjunction with opening of the door, and in conjunction with closing of the door, the upper mold Since the lowering suppression member that moves to the lowering allowable position that allows the lowering of the mold is provided, the upper mold is allowed to lower when the door is closed, so that a normal pressing operation can be performed. On the other hand, when the door is opened during work on the mold, the lowering restraining member moves to the lowering restraining position and restrains the lowering of the mold, so the mold is opened with the door provided around the mold open. Can be more reliably prevented.

  In this case, the door is a hinged door that is openable and closable around a rotation axis around the space between the molds, and the lowering suppression member is linked to the opening and closing of the door. By rotating around, when reciprocating between the lowering prevention position and the lowering allowable position, it is possible to more reliably prevent the lowering of the mold with a relatively simple configuration with the door opened. it can.

  Further, it further comprises obstacle detection means for detecting an obstacle in an opening opened and closed by the door, and the door is opened when detected as an obstacle by the obstacle detection means. The opened door is detected as an obstacle by the obstacle detection means. For this reason, even when the door is opened, it is possible to perform processing when an obstacle is detected.

  And a light detection means for detecting the open / closed state of the door based on the presence or absence of detection light, and a contact-type detecting means for detecting the open / closed state of the door based on a change in the contact state accompanying the opening / closing of the door. When it is determined that the door is closed based on the detection results of both the light detection means and the contact detection means, the door can be controlled so as to allow a press operation with the lowering of the upper die. It is possible to more reliably prevent the pressing operation in a state where the is opened.

  In addition, if the door is further provided with an adsorbing means that adsorbs and holds the door in a detachable manner, it is possible to effectively prevent a situation where the door is inadvertently closed after the door is once opened.

  Hereinafter, a press apparatus according to an embodiment of the present invention will be described. FIG. 1 is a front view showing a press apparatus, FIG. 2 is an enlarged perspective view of a main part of the press apparatus, and FIG. 3 is an explanatory view showing an open / close state of a door in the press apparatus.

  This press apparatus is an apparatus for applying pressure to a workpiece between the upper mold 30 and the lower mold 20 to perform a press process such as a bending process or a cutting process. For example, inside a junction block used for wiring branching of an automobile, a structure in which a predetermined wiring circuit is configured by attaching a bus bar to an insulating plate is incorporated. This press apparatus forms a member such as the bus bar by cutting and bending a metal plate material.

  The press device includes a lower mold 20, an upper mold 30, a door 50 that covers a space between the molds 20 and 30 so as to be freely opened and closed, and a deterrent block 40 as a lowering deterring member.

  The lower mold 20 is a member provided at a fixed position in the vertical direction, and the upper surface thereof is formed on a predetermined mold surface corresponding to the shape to be processed. In the present embodiment, a fixed plate 12 is fixed on the base 10, and a lower mold 20 is fixed substantially at the center of the fixed plate 12.

  The upper mold 30 is a member that can be moved up and down so as to move toward and away from the lower mold 20, and its lower surface is formed on a predetermined mold surface corresponding to the shape to be processed. Then, the object to be processed is pressed by applying pressure with the object to be processed sandwiched between the mold surface of the lower mold 20 and the mold surface of the upper mold 30.

  In the present embodiment, the upper support plate 16 is supported at a predetermined position above the lower mold 20 by a support member including a support column (not shown) that is erected on the base 10. Further, the upper support plate 16 is provided with a lifting drive unit 18 constituted by an actuator such as a hydraulic cylinder. The raising / lowering drive part 18 is provided with the drive main-body part 18a fixed to the upper support plate 16, and the rod part 18b provided so that advance / retreat drive was possible toward the downward direction from this drive main-body part 18a. And the movable plate 38 is attached to the lower end part of the rod part 18b, and the lower metal mold | die 20 is attached to the lower surface approximate center part of this movable plate 38. FIG.

  Then, when the rod portion 18 b moves forward and backward by driving the lifting drive unit 18, the upper mold 30 and the movable plate 38 move up and down so as to approach or separate from the lower mold 20 and the fixed plate 12.

  Further, a door 50 is provided so as to cover the space between the molds between the upper mold 30 and the lower mold 20 so that the upper mold 30 is raised.

  Here, the door 50 is a hinged door that is openable and closable around a rotation axis around the space between the molds.

  More specifically, a front wall portion 17 formed of a transparent resin plate or the like is provided on the upper side of one side (front portion) of the press device, and the front wall portion 17 and the fixing plate 12 are connected to each other. A substantially rectangular work opening 19 is provided therebetween. For example, the work opening 19 is an opening for an operator to set a workpiece on the lower mold 20.

  A pair of opening / closing shafts 56 are provided on both side portions of the working opening 19 so as to extend vertically. The opening / closing shaft portion 56 is formed in a rod shape and is rotatably supported between the fixed plate 12 and the upper support plate 46.

  The door 50 is a plate-like member formed of a transparent resin or the like, and is formed to have a size that covers the right half or the left half of the work opening 19. The pair of doors 50 are respectively attached to the opening / closing shaft portions 56 via brackets 58. Each door 50 has a closed position (see L1 in FIG. 3) covering the right half or the left half of the work opening 19 around the rotation axis of each open / close shaft 56, and the closed position. And an open position that opens outward (see L2 in FIG. 3).

  FIG. 4 is an explanatory diagram showing a state in which the inhibition block inhibits the lowering of the upper mold. As shown in FIGS. 1 to 4, the deterrence block 40 is in a lowering deterrence position (see L <b> 1 in FIG. 3 and a solid line in FIG. 4) that deters the lowering of the upper mold 30 in conjunction with the door 50 being opened. In addition to moving, the door 50 is movably provided at a lowering allowable position (see L2 in FIG. 3 and a two-dot chain line in FIG. 4) that allows the upper mold 30 to be lowered in conjunction with closing. The restraining block 40 is formed as a long member having a vertical dimension corresponding to the distance between the fixed plate 12 and the movable plate 38 with the upper mold 30 raised. The restraining block 40 is interposed between the fixed plate 12 and the movable plate 38 at the lowering restraining position, so that the lowering of the upper mold 30 is restrained, while the fixed plate 12 and the movable plate are at the descending allowable position. The upper mold 30 is allowed to descend by separating from the space 38.

  The deterrent block 40 moves in the direction approaching the space between the molds as the hinged door 50 is opened outward, moves to the lowering deterrence position, and closes the door 50 in the opposite direction. Accordingly, the restraining block 40 is directly or indirectly attached to the door 50 so as to move in a direction away from the space between the molds and move to the lowering allowable position.

  More specifically, the pair of restraining blocks 40 are respectively attached to the open / close shaft portions 56 via brackets 58. That is, the door 50 is attached to the opening / closing shaft portion 56 so as to be located on one side of the opening / closing shaft portion 56, and the suppression block 40 is attached to be located on the other side. When the door 50 is closed, the restraining block 40 rotates outward around the opening / closing shaft portion 56 and moves to the allowable position for lowering. On the other hand, when the door 50 is opened outward, the restraining block 40 moves around the opening / closing shaft portion. It moves inwardly and moves to the lowering restraining position.

  Note that the lowering restraining member does not necessarily need to be interposed between the fixed plate 12 and the movable plate 38 as in the restraining block 40. For example, the lowering restraining member is attached to the fixed plate 12 or the upper metal plate in a state of being attached to any fixed member. The structure etc. which engage with the type | molds 30 grade | etc., And prevent the upper metal mold | die 30 from falling may be sufficient.

  The work opening 19 opened and closed by the pair of doors 50 is provided with obstacle detection units 60a and 60b. The obstacle detection units 60 a and 60 b are means for detecting an obstacle (for example, a worker's hand) in the work opening 19. Here, as the obstacle detection units 60a and 60b, detection light is emitted from the light emitting unit 60a provided on one side of the work opening 19 so as to cross the front of the work opening 19, and this is used as the work opening. Photodetecting means (what is called an area sensor) is used that detects the presence or absence of an obstacle based on whether or not the detection light is blocked by receiving light with a light receiving portion 60b provided on the other side of 19. The light emitting unit 60 a and the light receiving unit 60 b are fixed to a predetermined position in front of the work opening 19 by mounting frames 69 provided on both sides of the work opening 19.

  The door 50 is configured to be opened in such a manner that it is detected as an obstacle by the obstacle detectors 60a and 60b. Here, each door 50 is provided with a light-shielding portion 54 so that the light-shielding portion 54 blocks the detection light when the door 50 is opened.

  The working opening 19 is provided with a micro switch 66 as contact detection means for detecting the open / closed state of the door 50 based on the change in the contact state associated with the opening / closing of each door 50. Here, the microswitch 66 is provided on the fixed plate 12 which is the peripheral portion of the work opening 19. When the door 50 is completely closed, the door 50 pushes the actuator portion of the micro switch 66 so that the on / off state of the micro switch 66 is switched.

  The detection signals of the obstacle detection units 60a and 60b and the micro switch 66 are output to the control unit 70, and the control unit 70 controls the press operation such as the operation control of the elevating drive unit 18 based on the detection results. Do. In the present embodiment, the control unit 70 stops activation of the press device when an obstacle is detected based on the detection results of the obstacle detection units 60a and 60b, and during the activation of the press device. Stop the operation of the press machine. Further, the control unit 70 determines that the door 50 is closed based on the detection results of both the obstacle detection units 60a and 60b and the micro switch 66 (that is, the obstacle detection units 60a and 60b Is detected and the actuator part of the micro switch 66 is pushed by the door 50), the press operation with the lowering of the upper mold 30 is enabled.

  Further, the press device is provided with a magnet stopper 68 as an attracting means for detachably attracting and holding the door 50 in an open state. The magnet stoppers 68 are provided on both the frame 69 and the door 50 at positions facing each other with the door 50 fully opened. When the door 50 is opened, both the magnet stoppers 68 are detachably attracted by the magnet's attractive force, and the door 50 is held open.

  According to the press device configured as described above, since the upper mold 30 is allowed to descend when the door 50 is closed, a normal press operation can be performed. On the other hand, when the door 50 is opened during work on the molds 20, 30, etc., the deterrence block 40 moves to the lowering deterrence position in conjunction with this and the lowering of the upper mold 30 is inhibited. Therefore, the lowering of the upper mold 30 can be more reliably prevented with the door 50 provided around the molds 20 and 30 opened.

  In addition, the door 50 is a hinged door 50 that can be opened and closed around the rotation axis around the space between the molds. As the door 50 is opened outward, the deterrent block 40 is moved to the mold. Since the deterrence block 40 is directly or indirectly attached to the door 50 so as to move in the direction approaching the space side and move to the lowering deterrence position, the door 50 has a relatively simple structure. With the open, the lowering of the upper mold 30 can be more reliably prevented.

  Further, there are provided obstacle detection units 60a and 60b for detecting obstacles in the work opening 19 opened and closed by the door 50, and the door 50 is detected as an obstacle by the obstacle detection units 60a and 60b. Therefore, the opened door 50 is detected as an obstacle. For this reason, even when the door 50 is opened, processing when an obstacle is detected, for example, start / stop / stop processing of the press operation can be performed, and trouble can be prevented more reliably.

  In addition, the obstacle detection units 60a and 60b are used as light detection means for detecting the open / closed state of the door 50 based on whether or not the detection light is blocked, and the change in the contact state accompanying the opening / closing of the door 50 A micro switch 66 for detecting the open / close state is further provided. When it is determined that the door 50 is closed based on the detection results of both, the press operation accompanied by the lowering of the upper mold 30 can be controlled. Therefore, it is possible to prevent the pressing operation with the door 50 opened more reliably.

  Furthermore, since the magnetic stopper 68 is further provided as an attracting means for detachably attracting and holding the door 50 in an open state, it is effective that the door 50 is inadvertently closed after the door 50 is opened once. Can be prevented.

  The present invention can be applied not only to the door 50 that covers the front part of the space between the molds, but also to a door that covers the space between the molds such as the lateral side and the rear side so as to be freely opened and closed.

It is a front view which shows the press apparatus which concerns on embodiment of this invention. It is a principal part expansion perspective view of a press apparatus. It is explanatory drawing which shows the opening / closing state of the door in a press apparatus. It is explanatory drawing which shows the state in which the suppression block suppresses the fall of an upper metal mold | die.

Explanation of symbols

20 Lower mold 30 Upper mold 40 Deterrent block 50 Door 54 Shading part 56 Opening and closing shaft part 60a, 60b Obstacle detection part 66 Micro switch 68 Magnet stopper 70 Control part

Claims (5)

A lower mold,
An upper mold that moves up and down to approach and separate from the lower mold;
A door that covers the space between the lower mold and the upper mold so as to be freely opened and closed;
When the door is opened, the upper mold moves to a lowering deterrence position that prevents the upper mold from being lowered, and when the door is closed, the upper mold moves to a lowering allowable position that allows the upper mold to be lowered. A descending restraining member that moves,
Press device. The press device according to claim 1,
The door is a hinged door that can be opened and closed around a rotation axis around the space between the molds,
The lowering suppression member reciprocates between the lowering suppression position and the lowering allowable position by rotating around the rotation axis in conjunction with opening and closing of the door. The pressing device according to claim 1 or 2,
An obstacle detection means for detecting an obstacle in the opening opened and closed by the door;
The pressing device, wherein the door is opened in such a manner that the door is detected as an obstacle by the obstacle detection means. It is a press apparatus in any one of Claims 1-3,
A light detection means for detecting the open / closed state of the door by the presence or absence of detection light blocking;
Contact-type detection means for detecting the open / closed state of the door by a change in the contact state accompanying the opening / closing of the door;
Further comprising
A press apparatus that controls a press operation with lowering of the upper die when it is determined that the door is closed based on detection results of both the light detection means and the contact detection means. . The press device according to any one of claims 1 to 4,
A press apparatus further comprising suction means for detachably holding the door in an open state.

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