JP5393221B2 - Press system - Google Patents

Description

  The present invention relates to a press system including a press device and a mold transport device that transports a mold to the press device.

  2. Description of the Related Art Conventionally, a press apparatus that press-molds a material using an upper mold and a lower mold is known. This press apparatus is provided with a bolster to which a lower mold is attached, and a slide that is arranged to face the bolster and to which an upper mold is attached. The space between the bolster and the slide is a work space. A pair of guard plates are provided in the openings on both sides of the press device in order to prevent, for example, an operator's hand from entering the work space from the side.

  By the way, in the press apparatus having the above-described configuration, an operation of exchanging the upper and lower molds is required according to the material to be processed. Since this metal mold is made of, for example, metal, it has a considerable weight and is difficult for an operator to carry easily. Therefore, when exchanging the mold, it is necessary to lift the mold with a crane, for example, and carry the mold into and out of the work space from the front of the press device. Therefore, the work of exchanging the mold is a large-scale work.

  Therefore, for example, there is a mold conveying apparatus described in Patent Document 1 as an apparatus for easily conveying a mold to a press apparatus. In this mold conveyance device, the mold is conveyed to the press device by a conveyance carriage that moves along the rail. When using such a mold conveyance device, it is preferable to carry in and out the mold from the opening on the side surface of the press device from the viewpoint of ensuring workability. However, as described above, the guard plate is provided in the opening of the press device. Therefore, it is necessary to remove the guard plate when using the mold carrying device, but there is a possibility that a safety problem may be caused by removing the guard plate.

  Regarding this problem, for example, the press device described in Patent Document 2 is provided with a guard plate interlock device. In this pressing apparatus, a guard plate is attached to the opening so as to be openable and closable, and when the guard plate is in an open state, a pressing operation is prohibited.

Japanese Patent No. 3540188 Japanese Patent No. 4199876

  By the way, except when exchanging the mold, the operator's consciousness with respect to the transport carriage of the mold transport apparatus is low. In this case, for example, even if the transport carriage moves for some reason during the press work, the operator may not notice. At this time, for example, when the exchanged mold is placed on the transport carriage, there is a possibility that a situation such as a drop of the mold may occur where the worker cannot see. Therefore, when using a press apparatus and a metal mold | die conveying apparatus in cooperation, the further improvement of safety is desired.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a press system capable of easily exchanging dies and improving safety.

  In order to solve the above problems, a press system according to the present invention carries a housing having a working space in which a bolster to which a lower die is attached and a slide to which an upper die is placed, and an upper and lower die into the working space. And a guard plate attached to the opening for opening and closing, a storage base for storing the upper and lower molds, and an upper and lower metal disposed between the storage base and the opening. A press system including a mold transport device including a traverser for transporting a mold, the closed state detecting means for detecting a closed state of the guard plate, and a first interface for prohibiting a press operation in the work space. The locking means, the second interlock means for prohibiting the operation of the traverser in the mold conveying device, the first interlock means and the second interlock means are controlled. Interlock control means for releasing the first interlock means when the closed state of the guard plate is detected by the closed state detection means, and operating the second interlock means, When the closed state detecting means does not detect the closed state of the guard plate, the first interlock means is operated and the second interlock means is released.

  In the press system according to the present invention, a traverser that conveys the upper and lower molds is disposed adjacent to the press apparatus between a storage base that accommodates the upper and lower molds and an opening of the press apparatus. Thereby, since it is not necessary to use a crane etc. for conveyance of the upper and lower metal mold | die to a press apparatus, it becomes possible to exchange an upper and lower metal mold | die easily. Further, when the guard plate is closed, that is, when a press operation is being performed in the press device, the operation of the traverser is prohibited, and when the guard plate is not closed, the operation of the traverser is canceled. The Thus, for example, the traverser is prevented from moving without permission during the press operation, and thus safety can be ensured. In this way, the mold can be easily replaced and safety can be improved.

  In addition, an open state detecting means for detecting the open state of the guard plate is further provided, and the interlock control means operates the first interlock means when the open state of the guard plate is detected by the open state detecting means. It is preferable to release the second interlock means. In this case, since it can be reliably detected that the guard plate is in the open state, the first interlock means and the second interlock means can be more reliably controlled.

  In addition, prohibition means for prohibiting the movement of the upper and lower molds on the traverser toward the press device, position detection means for detecting the position of the traverser, and position detection that the position of the traverser is located in the opening of the press device Preferably, the apparatus further includes prohibition control means for releasing the prohibition means when the guard plate is detected by the means and when the open state of the guard plate is detected by the open state detection means. In this case, since the prohibition means is released only when the guard plate is open at the opening, it is possible to prevent the upper and lower molds from dropping except when the upper and lower molds are carried in and out, and the upper and lower molds are securely It can be carried in and out of the press device.

  According to the present invention, it is possible to easily exchange molds while ensuring safety.

It is a perspective view showing the outline of the press system concerning one embodiment of the present invention. It is the figure which looked at the press system shown in FIG. 1 from upper direction. It is a perspective view which shows the closed state of a guard board. It is a perspective view which shows the open state of a guard board. It is a perspective view which shows a closed state detection switch. It is a side view which shows a traverser. It is a block diagram which shows the functional block of a press system. It is a flowchart which shows the exchange procedure of the upper and lower metal mold | die implemented in a press system. It is a flowchart which shows the exchange procedure of the up-and-down metal mold | die implemented in the press system which concerns on a modification.

  Hereinafter, embodiments of a press system according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is a perspective view showing an outline of a press system according to an embodiment of the present invention, and FIG. 2 is a view of the press system shown in FIG. 1 as viewed from above. As shown in FIGS. 1 and 2, the press system 1 includes a press device 2 and a mold conveying device 3.

  The press apparatus 2 is an apparatus that performs pressure molding by pressing a material from above and below with an upper mold and a lower mold. The press device 2 includes a housing 4 that is configured by a C-shaped frame in a side view. The housing 4 is provided with a bolster 5 for attaching a lower mold and a tool. At a position facing the bolster 5, an upper mold is attached and a slide 6 that is movable in the vertical direction is provided. A space between the bolster 5 and the slide 6 is a work space S. The opening 7 on one side (left side in the figure) of the housing 4 serves as a carry-in / out port through which the upper and lower molds K are carried in / out.

  Guard plates 8 and 9 for preventing entry into the work space S from the side of the housing 4 are disposed on both sides of the press device 2. The guard plate 8 is attached to the opening 7 so as to be openable and closable. The guard plate 8 is attached to two rails 10a and 10b that extend in the front-rear direction along the side surface of the casing 4 of the pressing device 2 and are arranged in parallel in the vertical direction. Thereby, the guard plate 8 can be moved in the front-rear direction and can be opened and closed with respect to the opening 7. The guard plate 9 is fixed to the side portion of the press device 2.

  FIG. 3 is a perspective view showing a closed state of the guard plate 8. As shown in the figure, when the guard plate 8 is in the closed state, the guard plate 8 is positioned on the front side of the rails 10a and 10b and closes the opening 7. FIG. 4 is a perspective view showing an open state of the guard plate 8. As shown in the figure, when the guard plate 8 is in the open state, the guard plate 8 is located on the rear side of the rails 10a and 10b, and the opening 7 is opened.

  As shown in FIG. 5, a closed state detection switch 11 for detecting the closed state of the guard plate 8 is provided at the front end of the lower rail 10b. FIG. 5 is a perspective view showing a closed state detection switch. As shown in the figure, the closed state detection switch 11 has a contact portion that contacts the guard plate 8 when the guard plate 8 is closed, that is, when the front end portion of the guard plate 8 is positioned at the front end portions of the rails 10a and 10b. 11a. The closed state detection switch 11 detects the closed state of the guard plate 8 based on the contact state between the contact portion 11 a and the guard plate 8.

  Further, an open state detection switch 12 (see FIG. 7) for detecting the open state of the guard plate 8 is provided at the rear end of the lower rail 10b. The open state detection switch 12 has the same configuration as the closed state detection switch 11 and detects the open state of the guard plate 8 based on the contact state between the contact portion and the guard plate 8.

  Next, the mold conveyance device 3 will be described. As shown in FIGS. 1 and 2, the mold conveying device 3 includes a storage table 13 that stores the mold and a traverser 14 that transports the mold stored in the storage table 13 to the press device 2. ing.

  The storage table 13 is a table for storing the upper and lower molds K attached to the press device 2. As shown in FIG. 2, a plurality of storage tables 13 are arranged side by side on the opening 7 side of the press device 2. The storage table 13 includes a placement portion 13a on which the upper and lower molds K are placed, and a leg portion 13b that supports the placement portion 13a. A plurality of rollers are arranged in parallel on the mounting portion 13a (see FIG. 6), and the upper and lower molds K are mounted on the rollers.

  The traverser 14 is a device for transporting the upper and lower molds K between the storage table 13 and the opening 7 of the press device 2. The traverser 14 is provided adjacent to the press device 2. Specifically, the traverser 14 is placed on a rail L laid between the storage table 13 and the press device 2. The traverser 14 includes a mounting portion 14a on which the upper and lower molds K are mounted, and a support portion 14b to which the wheels R are attached while supporting the mounting portion 14a. The traverser 14 is movable between the storage base 13 and the opening 7 as the wheels R move along the rails L.

  As shown in FIG. 6, a plurality of rollers are arranged in parallel on the mounting portion 14 a of the traverser 14. The height position of the roller is equivalent to the height and position of the roller of the storage table 13. As a result, the upper and lower molds K placed on the storage table 13 move to the traverser 14 side by sliding on the rollers.

  The traverser 14 is provided with a lock pin (prohibiting means) 15 that is movable in the vertical direction. The lock pin 15 is for prohibiting the movement of the upper and lower molds K on the traverser 14 toward the press device 2. Specifically, the lock pin 15 is provided at the end on the pressing device 2 side in the placement portion 14 a of the traverser 14. The lock pin 15 is attached to an actuator (not shown) driven by air pressure, for example, and the movement of the lock pin 15 in the vertical direction is controlled by the actuator being controlled by a lock pin control unit 24 described later. In addition, the lock pin 15 is in a protruding state as an initial position.

  Further, the traverser 14 is provided with a position detection sensor 16 (see FIG. 7) for detecting the position of the own apparatus. The position detection sensor 16 is a proximity switch provided on the wheel R, for example.

  Next, a functional configuration of the press system 1 will be described. FIG. 7 is a block diagram showing functional blocks of the press system 1. As shown in the figure, the press system 1 includes a control unit 20. The control unit 20 includes a first interlock unit (first interlock control unit) 21, a second interlock unit (second interlock control unit) 22, an interlock control unit (interlock control unit) 23, , And a lock pin control unit (prohibition control means) 24.

  The first interlock unit 21 prohibits a press operation in the press device 2. When the second interlock unit 21 receives the interlock operation signal output from the interlock control unit 23, the second interlock unit 21 prohibits the press operation in the press device 2. Moreover, the 1st interlock part 21 will cancel | release prohibition of the press operation in the press apparatus 2, if the interlock cancellation | release signal is received from the interlock control part 23. FIG. In addition, the 1st interlock part 21 controls the control part (not shown) of the press apparatus 2, for example, and prohibits operation | movement of the press apparatus 2. FIG.

  The second interlock unit 22 prohibits the operation of the traverser 14 in the mold conveying device 3. When the second interlock unit 22 receives the interlock operation signal output from the interlock control unit 23, the second interlock unit 22 prohibits the operation of the traverser 14. Further, when receiving the interlock release signal from the interlock control unit 23, the second interlock unit 22 cancels the prohibition of the operation of the traverser 14. In addition, the 2nd interlock part 22 controls the locking mechanism (not shown) provided in the wheel of the traverser 14, for example, and prohibits the operation | movement of the traverser 14. FIG.

  The interlock control unit 23 controls the first interlock unit 21 and the second interlock unit 22. The interlock control unit 23 controls the first interlock unit 21 and the second interlock unit 22 based on the detection states of the closed state detection switch 11 and the open state detection switch 12. Specifically, the interlock control unit 23 detects when the closed state of the guard plate 8 is detected by the closed state detection switch 11 and the open state detection switch 12 does not detect the open state of the guard plate 8. An unlock signal is output to the first interlock unit 21 and an interlock operation signal is output to the second interlock unit 22.

  Further, the interlock control unit 23 performs the interlock operation when the closed state detection switch 11 does not detect the closed state of the guard plate 8 and the open state detection switch 12 detects the open state of the guard plate 8. A signal is output to the first interlock unit 21 and an interlock release signal is output to the second interlock unit 22.

  The lock pin control unit 24 controls the lock pin 15 provided in the traverser 14. In the lock pin control unit 24, the position of the traverser 14 detected by the position detection sensor 16 is a position corresponding to the opening 7 of the press device 2, and the open state of the guard plate 8 is detected by the open state detection switch 12. When this occurs, the actuator provided in the traverser 14 is controlled so that the lock pin 15 is moved downward and retracted. Thereby, the prohibition of the movement of the upper and lower molds K on the traverser 14 to the press device 2 is released.

  On the other hand, the lock pin control unit 24 determines that the position of the traverser 14 detected by the position detection sensor 16 is not a position corresponding to the opening 7 of the press device 2 and the closed state detection switch 11 indicates that the guard plate 8 is closed. When detected, the actuator provided in the traverser 14 is controlled so that the lock pin 15 is moved upward and returned to the initial position. Thereby, the movement of the upper and lower molds K on the traverser 14 to the press device 2 is prohibited.

  Next, a procedure for exchanging dies in the press system 1 will be described. FIG. 8 is a flowchart showing a procedure of die replacement performed in the press system. In the following, a case where the traverser 14 is moved manually by an operator will be described.

  In FIG. 8, first, the upper and lower molds K attached to the bolster 5 and the slide 6 of the press device 2 are removed (step S01). Next, the card board 8 is opened and brought into an open state (step S02). Thereby, the closed state detection switch 11 does not detect the closed state of the guard plate 8, and the open state detection switch 12 detects the open state of the guard plate 8, whereby the first interlock unit 21 detects the closed state of the press device 2. The press operation is prohibited, and the operation of the traverser 14 is canceled by the second interlock unit 22 (step S03).

  Subsequently, the upper and lower molds K removed from the press device 2 are carried out (step S04), and the upper and lower molds K are placed on the traverser 14 (step S05). Then, the upper and lower molds K are transferred to an arbitrary storage table 13 by the traverser 14 (step S06), and the removed upper and lower molds K are stored in the storage table 13 (step S07).

  Next, the traverser 14 is moved to the storage table 13 in which the used upper and lower molds K attached to the press device 2 are stored (step S08), and the upper and lower molds K stored in the storage table 13 are moved to the traverser 14. It is placed (step S09). Then, the upper and lower molds K are conveyed by the traverser 14 (step S10), and the traverser 14 is stopped at a fixed position, that is, at a position corresponding to the opening 7 of the press device 2 (step S11).

  Subsequently, the lock pin 15 provided on the traverser 14 is moved downward, and the upper and lower molds K are carried from the traverser 14 to the press device 2 (step S12). When the upper and lower molds K are carried in, the card plate 8 is closed (step S13). As a result, the closed state detection switch 11 detects the closed state of the guard plate 8 and the open state detection switch 12 does not detect the open state of the guard plate 8. The operation is released and the operation of the traverser 14 is prohibited by the second interlock unit 22 (step S14). Then, the carried upper and lower molds K are attached to the bolster 5 and the slide 6 (step S15).

  As described above, in the press system 1, the traverser 14 that conveys the upper and lower molds K between the storage table 13 that accommodates the upper and lower molds K and the opening 7 of the press apparatus 2 is adjacent to the press apparatus 2. Has been placed. Thereby, since a crane etc. are not used for conveyance of the up-and-down metal mold | die K to the press apparatus 2, it becomes possible to replace | exchange the up-and-down metal mold | die K easily. Further, when the closed state of the guard plate 8 is detected, that is, when the press operation is performed in the press device 2, the operation of the traverser 14 is prohibited, and when the closed state of the guard plate 8 is not detected, the traverser 14 is operated. Is released. Thereby, for example, the traverser 14 is prevented from moving without permission during the press operation, so that safety can be ensured. As described above, the upper and lower molds K can be easily replaced and the safety can be improved.

  In addition, when the open state of the guard plate 8 is detected by the open state detection 12 that detects the open state of the guard plate 8, the first interlock unit 21 is operated and the second interlock unit 22 is released. The guard plate 8 can be reliably detected to be in an open state, and the interlock control unit 23 can more reliably control the first interlock unit 21 and the second interlock unit 22.

  Further, the press system 1 of the present embodiment includes a lock pin 15 that prohibits the movement of the upper and lower molds K on the traverser 14 toward the press device 2, a position detection 16 that detects the position of the traverser 14, and the traverser 14. When the position detecting sensor 16 detects that the position of the guard plate 8 is located in the opening 7 of the press device 2 and the open state of the guard plate 8 is detected by the open state detecting sensor 2, the lock is released. A pin control unit 24 is provided. As a result, the lock pin 15 is released (retracted downward) only when the guard plate 8 is in the open state in the opening 7, so that the upper and lower molds K are not dropped when the upper and lower molds K are not carried in and out. While being able to prevent, the upper and lower metal mold | die K can be reliably carried in / out of the press apparatus 2. FIG.

  The present invention is not limited to the above-described embodiment. For example, in the above-described embodiment, the mold is transported manually by the traverser 14, but the traverser 14 may be transported automatically. Hereinafter, a description will be given with reference to FIG.

  FIG. 9 is a flowchart showing a procedure for exchanging the upper and lower molds K performed in the press system 1. In the following description, the press system 1 omits a detailed description, but the drive unit that drives the traverser 14, the drive control unit that controls the drive unit, and the roller drive that drives the rollers in the traverser 14 and the receiving table 13. A mechanism such as a unit (both not shown) is provided. Moreover, in the said embodiment, although the lock pin 15 is provided in the press apparatus 2 side in the mounting part 14a of the traverser 14, in the traverser 14 demonstrated below, the lock | rock which has the structure similar to the lock pin 15 is provided. A pin is also provided on the storage base 13 side. Further, it is assumed that the accommodation table 13 is provided with an individually identifiable number.

  In FIG. 9, first, the upper and lower molds K attached to the bolster 5 and the slider 6 of the press device 2 are removed (step S21). Next, a storage base number of the storage base 13 in which the removed upper and lower molds K are stored, and a take-out base number of the storage base 13 in which the newly attached upper and lower molds K are stored are provided in the press device 2, for example. The input is made to the operation unit (not shown) (step S22). Then, the card plate 8 is opened to be opened (step S23). Thereby, the closed state detection switch 11 does not detect the closed state of the guard plate 8, and the open state detection switch 12 detects the open state of the guard plate 8, whereby the first interlock unit 21 detects the closed state of the press device 2. The press operation is prohibited and the operation of the traverser 14 is released by the second interlock unit 22 (step S24).

  Subsequently, after the lock pin 15 is moved downward, the upper and lower molds K removed from the press device 2 are carried out, and the upper and lower molds K are placed on the traverser 14 (step S25). At this time, the lock pin 15 of the traverser 14 is returned to the initial position by the actuator (step S26). Then, the upper and lower molds are conveyed to the storage table 13 having the storage table number input in step S22 (step S27).

  When the upper and lower molds K are transported to the designated accommodation table 13, the lock pin provided on the accommodation table 13 side is moved downward (step S28). Then, the rollers of the traverser 14 and the accommodating table 13 are driven, and the upper and lower molds K on the traverser 14 are accommodated in the accommodating table 13 (step S29), and then the lock pin provided on the accommodating table 13 side is in the initial position. Returned (step S30).

  Next, the traverser 14 is moved to the position of the storage table 13 of the take-out table number input in step S22 (step S31), and the lock pin provided on the storage table 13 side is moved downward (step S32). Then, the rollers of the storage table 13 and the traverser 14 are driven, and the upper and lower molds K on the storage table 13 are taken out and placed on the traverser 14 (step S33). Thereafter, the lock pin on the storage table 13 side is returned to the initial position (step S34).

  Subsequently, the upper and lower molds K are conveyed by the traverser 14 to a fixed loading position, that is, a position corresponding to the opening 7 of the pile device 2 (step S35). Then, in response to the traverser 14 being positioned at a position corresponding to the opening 7, the lock pin 15 on the press device 2 side is moved downward (step S36), and the upper and lower molds K on the traverser 14 are moved to the press device 2. (Step S37).

  When the upper and lower molds K are carried into the press device 2, the guard plate 8 is closed to be closed (step S38). Thus, the press operation is released by the first interlock portion 21 because the closed state detection switch 11 detects the closed state of the guard plate 8 and the open state detection switch 12 does not detect the open state of the guard plate 8. In addition, the operation of the traverser 14 is prohibited by the second interlock unit 22 (step S39). Then, the carried upper and lower molds K are attached to the bolster 5 and the slide 6 (step S40).

  As described above, even when the traverser 14 and the like are automatically controlled, the upper and lower molds K are transported to the press device 2 by the traverser 14 as in the above embodiment. Can be easily performed. Further, the operation of the traverser 14 is prohibited when the closed state of the guard plate 8 is detected, and the operation of the traverser 14 is released when the open state of the guard plate 8 is detected. Thereby, for example, the traverser 14 is prevented from moving without permission during the press operation, so that safety can be ensured. As described above, the upper and lower molds K can be easily replaced and the safety can be improved.

  DESCRIPTION OF SYMBOLS 1 ... Press system, 2 ... Press apparatus, 3 ... Mold conveying apparatus, 4 ... Housing | casing, 5 ... Bolster, 6 ... Slide, 7 ... Opening part, 8 ... Guard plate, 11 ... Closed state detection switch (Closed state detection) Means), 12 ... Open state detection switch (open state detection means), 13 ... Storage base, 14 ... Traverser, 15 ... Lock pin (prohibition means), 16 ... Position detection sensor (position detection means), 21 ... First interface Lock part (first interlock means), 22 ... second interlock part (second interlock means), 23 ... interlock control part (interlock control means), 24 ... lock pin control part (prohibition control means), K: Upper and lower molds.

Claims (1)

A housing having a work space in which a bolster to which a lower die is attached and a slide to which an upper die is attached is disposed; A press device comprising:
A mold transfer device comprising: a storage table for storing the upper and lower molds; and a traverser disposed adjacent to the press device for transferring the upper and lower molds between the storage table and the opening. A press system comprising:
A closed state detecting means for detecting a closed state of the guard plate;
An open state detecting means for detecting an open state of the guard plate;
First interlock means for prohibiting a press operation in the work space;
A second interlock means for prohibiting the operation of the traverser in the mold conveying device;
Interlock control means for controlling the first interlock means and the second interlock means;
Prohibiting means for prohibiting movement of the upper and lower molds on the traverser toward the press device;
Position detecting means for detecting the position of the traverser;
The prohibiting means is released when the position detecting means detects that the position of the traverser is located in the opening of the press device and the open state detecting means detects the open state of the guard plate. Forbidden control means ,
The interlock control means, when a closed state of the guard plate is detected by said closed state detecting means and for releasing the first interlock means to operate said second interlocking means, the closed state when the open state of the guard plate is detected by the time when not detecting the closed state and the open state detecting means of said guard plate by detecting means, Rutotomoni to operate said first interlocking means, said first 2. Press system characterized by releasing interlock means.

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