WO2023085218A1

WO2023085218A1 - Stamping device and stamping system

Info

Publication number: WO2023085218A1
Application number: PCT/JP2022/041297
Authority: WO
Inventors: 新一松川; 潤一田嶋
Original assignee: タジマ機工株式会社
Priority date: 2021-11-12
Filing date: 2022-11-07
Publication date: 2023-05-19
Also published as: JP2023072324A; JP7105515B1

Abstract

The present invention provides a stamping device and a stamping system with which it is possible to simplify the configuration required for workpiece detection, and reduce erroneous detection of placement of a workpiece in a die. This stamping device has mounted therein a die set having a plurality of dies. The plurality of dies are provided as aligned in the width direction in the die set. Workpieces to be processed are respectively placed in the plurality of dies. The stamping device comprises: a limit switch (32) that detects the movement of a plate pressed by pins that are provided to the plurality of dies; a foot switch (32) that detects a user operation for driving the die set; a switching unit (14) that switches between detection by the limit switch (32) and detection by the foot switch (15); and a control unit (7) that drives the die set on the basis of the detection result from the limit switch (32) or the foot switch (15).

Description

Press processing equipment and press processing system

The present invention relates to a press working device and a press working system.

When manufacturing a rod-shaped frame material (vertical frame or horizontal frame) for composing products such as aluminum sashes, in order to provide through holes and notches in the frame material, the extruded product is pressed using a press machine. is done. As a result, through holes and cutouts are provided at the ends and intermediate portions of the frame member. Through-holes and cutouts can be used to combine frames and to attach products such as aluminum sashes to buildings.

Patent Document 1 below discloses a technique in which a plurality of dies are attached to a single press machine, and the dies for setting the work are changed each time the slide is lowered, and the work is pressed in order. ing. This press machine is particularly suitable for the production of aluminum sashes, for which there are many types of press work. That is, the number of press machines can be reduced unlike the case where only one die is permanently installed in one press machine. In addition, by reducing the number of press machines, the work of exchanging dies can be reduced compared to the case of exchanging dies each time, and the work efficiency is improved.

Japanese Patent No. 3939074

In the press machine, the timing at which the press working operation for the workpiece to be processed is started is determined by human operation such as stepping on a foot switch by the operator (user), or by setting it at a predetermined position in the mold. In some cases, it is an automatic operation due to the detection of a detected work by a sensor.

When the work is placed in a predetermined position in the mold, the press machine automatically operates and presses, and the operator does not have to press the foot switch, which saves labor. reduced.

On the other hand, conventionally, when a plurality of dies are mounted on a single press working device, a number of sensors corresponding to the number of dies are installed in the die set in order to detect the workpiece set at a predetermined position. It had been. Since the installation position of the sensor differs according to the position of the workpiece installed in the mold, the installation position of all the sensors is fixed in combination with the mold.

Since the die set of the stamping machine is replaceable and the position of the workpiece changes due to the replacement of the die set, each sensor cannot be installed on the main body side of the press machine. installed on the side. Also, the number of sensors corresponding to the number of molds is required. As a result, the number of sensors and electrical cables to be routed increases, increasing the cost of the mold set.

In addition, each sensor of the die set is connected to the control panel of the press processing equipment with an electric cable. Therefore, when replacing the mold set in the press working apparatus, it is necessary to connect electrical cables for all the sensors, which causes a problem that the wiring work takes time and effort. Furthermore, when replacing the mold set, if the electric cable is forgotten to be removed when pulling out the mold set to the front side, the electric cable may be disconnected. Furthermore, since there are many electrical cables and they are long, the operator must pay close attention not to cut the exposed electrical cables during press working or the like.

Furthermore, in the conventional press working device, each sensor detects that the work or the rod is in electrical contact with the detection plate, so that the work is set at a predetermined position in the mold. However, metal chips generated by press working adhere to the detection plate inside the die. be detected. As a result, there is a problem that dimensional errors occur in the positions of formed through holes and cutouts.

As disclosed in the above-mentioned Patent Document 1, even if the electrical contact is detected by the rod instead of the workpiece, chips may fly in the press machine, and lubricating oil for the operation of the die is sprayed, there is still a possibility that chips will adhere to the detection plate. Therefore, the operator needs to remove the chips attached to the detection plate by air blow or the like each time, and there is a problem that it takes time and effort to remove the chips in the press working.

The present invention has been made in view of such circumstances, and is capable of simplifying the configuration necessary for workpiece detection and reducing erroneous detection of installation of a workpiece in a mold. It is an object of the present invention to provide a press working device and a press working system capable of.

In order to solve the above problems, the press working apparatus and press working system of the present invention employ the following means.
That is, a press working apparatus according to the present invention is a press working apparatus on which a die set having a plurality of dies is placed, wherein the plurality of dies are arranged in parallel in the width direction in the die set. a workpiece to be processed can be placed in each of the plurality of molds, and the workpiece can be inserted from the front in the depth direction perpendicular to the width direction in each of the plurality of molds, and the press working device includes: one plate portion that moves in the opposite direction to the plurality of molds when pressed by pins provided on each of the plurality of molds; a detection portion that detects the movement of the plate portion; A foot switch for detecting a user's operation for driving the mold set, a switching unit for switching between detection by the detection unit and detection by the foot switch, and based on the detection result by the detection unit or the foot switch, a control unit for driving the mold set, the plate unit and the detection unit being detachable in the press working device, and the control unit, when switched to detection by the detection unit, controls the detection unit The mold set is driven based on the detection result by the foot switch, and when switching to the detection by the foot switch, the mold set is driven based on the detection result by the foot switch.

According to this configuration, a mold set having a plurality of molds can be mounted on the press working apparatus. A work to be processed can be installed in each of the above. The work can be inserted from the front in the depth direction perpendicular to the width direction in each of the plurality of molds. The press working device includes one plate portion, a detection portion, and a control portion. Also, in the mold set, each of the plurality of molds is provided with a pin. The plate portion of the press working device moves to the side opposite to the side of the plurality of dies when pressed by the pins of the die set.

For example, when a workpiece is inserted into a mold and the workpiece moves a pin of the mold set, the pin presses the plate, and as a result, the plate moves to the opposite side of the multiple molds. The motion of the plate is detected by the detector. The control section drives the mold set based on the detection result of the detection section. As a result, when processing a workpiece, the user can drive the mold set by inserting the workpiece into the mold without operating a foot switch or the like. In addition, since one plate portion can be moved by a pin provided in each of a plurality of molds, and the detection portion detects the movement of the plate portion, insertion of the workpiece into the mold can be detected. Since there is no need to provide a sensor for each mold, the number of sensors and electric cables to be wired can be reduced. Also, the risk of cutting exposed electrical cables is reduced.

Furthermore, according to this configuration, the press working apparatus further includes a foot switch and a switching section, the foot switch detecting a user's operation for driving the mold set, and the switching section Switches between detection by the , and detection by the foot switch. When switching to detection by the detection unit, the control unit drives the mold set based on the detection result of the detection unit, and when switching to detection by the foot switch, drives the metal mold based on the detection result of the foot switch. Drive the type set. As a result, when machining a workpiece, not only can the mold set be driven by inserting the workpiece into the mold, but the user can also operate the foot switch to drive the mold set.

In the above invention, the plate portion may be installed on the back side of the mold set and erected so that the plate surface is parallel to the width direction.

According to this configuration, one plate portion is installed on the back side of the mold set, and the plate portion is erected so that the plate surface is parallel to the width direction. A pin presses the plate portion. Also, regardless of the position of the pin, the plate can operate in the same way.

In the above invention, the pin is installed in the mold set, is movable along the depth direction, has one end positioned on the workpiece side to be inserted into the plurality of molds, and has the other end positioned on the plate. It may be located on the part side.

According to this configuration, the pin is installed in the mold set, and the pin is movable along the depth direction. One end side of the pin is located on the side of the workpiece inserted into the plurality of molds, and the other end side of the pin is located on the side of the plate portion. Thus, when the workpiece is inserted into the mold, the workpiece abuts on one end side of the pin, and the pin installed in the mold set moves along the depth direction. Next, the other end side of the pin comes into contact with the plate surface of the plate portion and presses the plate portion, and as a result, the plate portion moves to the opposite side of the plurality of molds.

The above invention may further include a foot switch for detecting a user's operation for driving the mold set, and a switching section for switching between detection by the detection section and detection by the foot switch, and the control section drives the mold set based on the detection result of the detection unit when switching to detection by the detection unit, and drives the mold set based on the detection result of the foot switch when switching to detection by the foot switch to drive the mold set.

A mold set according to a reference example of the present invention is a mold set that has a plurality of molds and is mounted on a press working device, wherein the plurality of molds are arranged in the width direction of the mold set. The workpieces are provided in parallel and can be installed respectively to be processed, the workpieces can be inserted from the front in the depth direction perpendicular to the width direction in each of the plurality of molds, and the press working The apparatus includes one plate portion, a detection portion that detects the operation of the plate portion, and a control portion that drives the mold set based on the detection result of the detection portion, and the mold set is is provided on each of the plurality of molds, and includes a pin that presses the plate portion of the press working device to move it to the side opposite to the plurality of molds.

A press working system according to the present invention is a press working system comprising a die set having a plurality of dies, and a press working apparatus on which the die set is mounted, wherein the plurality of dies are: Work pieces to be processed can be placed in parallel in the width direction in the mold set. The press working device is insertable, and includes a plate portion, a detection portion that detects the operation of the plate portion, a foot switch that detects a user's operation for driving the mold set, and the a switching unit for switching between detection by a detection unit and detection by the foot switch; and a control unit for driving the mold set based on the detection result of the detection unit or the foot switch, wherein the mold set is , a pin provided in each of the plurality of molds for pressing the plate portion of the press working device to move it to the side opposite to the plurality of molds, the plate portion and the detection unit is detachable in the press working apparatus, and when switching to detection by the detection unit, the control unit drives the mold set based on the detection result of the detection unit, and detects by the foot switch When switched to , the mold set is driven based on the detection result by the foot switch.

According to the present invention, it is possible to simplify the configuration necessary for workpiece detection, and reduce erroneous detection of installation of a workpiece in a mold.

1 is a front view showing a press working system according to one embodiment of the present invention; FIG. 1 is a block diagram showing a press working device according to one embodiment of the present invention; FIG. 1 is a front view showing a mold set according to one embodiment of the present invention; FIG. FIG. 2 is a plan view showing a mold set and work detection switches according to one embodiment of the present invention; 1 is a vertical cross-sectional view showing a workpiece detection switch according to one embodiment of the present invention; FIG.

A press working system 10 according to an embodiment of the present invention will be described below with reference to the drawings.
A press working system 10 according to the present embodiment includes a press working device 1 and a die set 2, as shown in FIG. The mold set 2 has a plurality of molds 3 and can be attached to or detached from the press working device 1. are replaced according to the shape of

For example, when manufacturing a rod-shaped frame material (vertical frame or horizontal frame) that constitutes a product such as an aluminum sash, the press working system 10 presses an extruded product (work 50) that serves as the frame material. Then, the workpiece 50 is provided with a through hole or a notch. A mold set 2 having a plurality of molds 3 is mounted on one press working apparatus 1, and an operator selects one from the plurality of molds 3 in the mold set 2 for each press working operation. One die 3 is selected, and the workpiece 50 is placed on the die 3 and pressed. After the press working at one place is completed, the mold 3 is changed, the workpiece 50 is placed, and another press working is performed. The operator can sequentially press the plurality of dies 3 in the die set 2 without performing replacement work such as removing or attaching the dies to the press working device 1. .

For example, the press working device 1 is configured so that the mold sets 2 can be placed in two stages, upper and lower, so that two types of mold sets 2 can be placed at the same time. Since two types of die sets 2 are mounted in one press working apparatus 1, compared to a single stage press working apparatus in which only one type of die set can be mounted, the die set 2 can be reduced, and the installation space of the device can be reduced.

The press working device 1 includes a mold set placement section 4, an eccentric cam 5, a motor 6, a control panel 7, a power transmission mechanism 8, a workpiece detection switch 9, a lifter 11, and the like. A frame 18 of the press machine 1 supports the mold set mounting portion 4, the eccentric cam 5, the motor 6, the control panel 7, the power transmission mechanism 8, the work detection switch 9, etc., and the frame 18 is installed on the lifter 11. be done.

The mold set mounting part 4 is a plate-like member, and the mold set 2 can be mounted on the upper surface. An opening is formed in the center of the mold set placing portion 4, and a cut piece of the workpiece 50 cut by the mold 3 can drop downward through the opening. The cut pieces are collected on the back side of the press working device 1 along the chute.

The eccentric cam 5 is provided at a position where it can come into contact with the upper surface of the upper plate 23 of the mold set 2 placed on the mold set placing portion 4 and rotates around the rotation axis of the shaft 12 . The upper plate 23 of the mold set 2 is pushed downward by the eccentric cam 5 as the position of the outer peripheral surface of the eccentric cam 5 farthest from the center of rotation moves downward.

When the position of the outer peripheral surface of the eccentric cam 5 farthest from the center of rotation faces downward in the vertical direction, the upper plate 23 of the mold set 2 is pushed down to the bottom dead center. After the upper plate 23 is pushed down to the bottom dead center, the upper plate 23 is pushed upward by the compression coil spring 24 provided in the die set 2 and the receiving plate 19 provided in the press machine 1 .

The motor 6 generates power for performing press working. The motor 6 rotates the shaft 12 via the power transmission mechanism 8 . The rotation of the shaft 12 causes the eccentric cam 5 to rotate, and as a result, the upper plate 23 of the mold set 2 moves downward. Then, the punch 21 provided on the upper plate 23 moves downward to cut the workpiece 50 placed on the mold 3 .

As shown in FIG. 2, the control panel 7 is provided with, for example, a control unit 13, a switching unit 14, and the like. The control unit 13 controls driving of the motor 6 to start or stop the operation of the motor 6 . The control unit 13 starts the operation of the motor 6 based on the detection result by the work detection switch 9 or the foot switch 15 . Further, the control unit 13 stops the operation of the motor 6 when the sensor capable of detecting the rotation of the shaft 12 of the press working device 1 detects that the shaft 12 has made one rotation. The control unit 13 is installed, for example, inside the control panel 7 installed on the frame 18, and is electrically connected to the work detection switch 9 and the foot switch 15 by electric cables.

The switching unit 14 switches detection by the workpiece detection switch 9 and detection by the foot switch 15, for example. When the switching unit 14 switches to the detection by the workpiece detection switch 9 , the control unit 13 drives the mold set 2 based on the detection result by the workpiece detection switch 9 . When the switching unit 14 switches to the detection by the foot switch 15 , the control unit 13 drives the mold set 2 based on the detection result by the foot switch 15 . The switching unit 14 is installed, for example, on the surface of the control panel 7 .

As shown in FIG. 1, the power transmission mechanism 8 has a belt 16, a pulley 17, etc., and transmits the power generated by the motor 6 to the shaft 12 to rotate the shaft 12. The power transmission mechanism 8 is not limited to the mechanism composed of the belt 16 and the pulley 17, and may be another mechanism as long as the shaft 12 can be rotated. The lower shaft 12 rotates as power is transmitted by a pulley 17 connected to the motor 6 and a belt 16 wrapped around the pulley 17 connected to one end of the lower shaft 12 . The upper shaft 12 is rotated by power transmitted by a pulley 17 connected to the other end of the lower shaft 12 and a belt 16 wrapped around the pulley 17 connected to one end of the upper shaft 12 .

The workpiece detection switch 9 detects that the workpiece 50 has been installed at a predetermined position inside the mold 3 . The workpiece detection switch 9 is connected to the control section 13 as shown in FIG. When it is detected that the work 50 is placed at the predetermined position, the work detection switch 9 transmits a detection signal to the control section 13 . The control unit 13 starts driving the motor 6 based on the detection signal received from the workpiece detection switch 9 . Details of the workpiece detection switch 9 will be described later.

The foot switch 15 detects an operator's (user's) operation for driving the mold set 2 . The foot switch 15 is connected to the controller 13 as shown in FIG. When it is detected that the footswitch 15 has been operated, the footswitch 15 transmits a detection signal to the control section 13 . Based on the detection signal received from the foot switch 15, the control unit 13 causes the motor 6 to start operating.

The lifter 11 shown in FIG. 1 moves the frame 18 vertically. By moving the frame 18 in the vertical direction, the height position of the mold set placing portion 4 is changed, and the height position of the mold set 2 is adjusted. The press machine 1 is provided with an operation button for the lifter 11, and the operator can arbitrarily adjust the height position of the lifter 11 by operating the operation button. When inserting the workpiece 50 into the mold 3 and cutting the workpiece 50, the operator can adjust the height of both the upper mold 3 and the lower mold 3 so that the work is easy. can.

As shown in FIGS. 3 and 4, the mold set 2 includes multiple molds 3, multiple punches 21, a lower plate 22, an upper plate 23, a compression coil spring 24, and the like.

The mold 3 is installed and fixed on the upper surface of the lower plate 22 of the mold set 2 . A workpiece 50 to be processed can be placed in the mold 3, and has an inner surface shape that follows the outer shape of the workpiece 50 so that the workpiece 50 does not move in the width direction during press working. When the work 50 is a rod-shaped member, for example, an extruded product for forming a frame member of a sash, the mold 3 is formed so that the work 50 can be inserted from the front of the mold 3 . In order to position the through-holes and cutouts formed in the work 50 , stoppers are formed on the back side of the mold 3 against which the work 50 is abutted. The workpiece 50 can be inserted from the front in the depth direction perpendicular to the width direction of the mold set 2 in each of the plurality of molds 3 .

The molds 3 are provided in parallel in the width direction in the mold set 2 . The molds 3 provided in the mold set 2 have different machining shapes and machining positions. That is, the sizes and positions of the through-holes and notches formed in the workpiece 50 are different for each mold 3 .

The punch 21 is installed and fixed on the lower surface of the upper plate 23 corresponding to the mold 3 . The outer shape of the punch 21 has a shape corresponding to the shape of the through hole or notch to be formed in the work 50 . An opening is formed in the lower plate 22, and a cut piece of the workpiece 50 cut by the mold 3 is dropped downward through the opening of the lower plate 22 and the opening of the mold set mounting portion 4 described above. can be made

A compression coil spring 24 is installed between the lower plate 22 and the upper plate 23 . In the die set 2 , the plurality of dies 3 and the plurality of punches 21 are provided on the central side, and the compression coil springs 24 are provided on both sides of the plurality of dies 3 and the plurality of punches 21 . As a result, since the upper plate 23 is held upward by the compression coil spring 24, when the die set 2 is not installed in the press working apparatus 1, the die 3 and the punch 21 are maintained in the state before they are engaged. be.

The mold set 2 is provided with pins 25 corresponding to each of the plurality of molds 3 . The pin 25 is an elongated rod-shaped member inserted into a through hole formed in the pin support portion 26 and supported by the pin support portion 26 . The pin 25 is movable along the depth direction of the mold set 2 , one end side is positioned on the workpiece 50 side to be inserted into the plurality of molds 3 , and the other end side is on the plate portion 31 side of the workpiece detection switch 9 . To position.

The workpiece detection switch 9 of the press machine 1 will be described below with reference to FIGS. 3 to 5. FIG.
The workpiece detection switch 9 has a plate portion 31 and a limit switch 32 . The workpiece detection switch 9 is provided, for example, on the mold set mounting portion 4 or the frame 18 of the press working apparatus 1 . The work detection switch 9 may be detachable, and when the work detection switch 9 is removed, the mold set 2 can be driven only by the foot switch 15 (see FIG. 2) without using the work detection switch 9.

The plate portion 31 is installed on the back side of the mold set 2 and erected so that the plate surface is parallel to the width direction of the mold set 2 . The width of the plate portion 31 is substantially the same as the width of the mold set 2 . The plate portion 31 has a size and a shape that the pins 25 are sure to come into contact with, taking into consideration the installation positions of the pins 25 assumed in advance in all mold sets 2 . A plate portion 31 of the workpiece detection switch 9 is pressed by each of a plurality of pins 25 provided on the mold 3 . When the plate portion 31 is pressed by the pins 25 , it moves to the side opposite to the plurality of molds 3 .

The plate portion 31 rotates, for example, around a rotating shaft 33 provided at the bottom of the plate portion 31 . In the plate portion 31, the pin 25 presses the plate portion 31 on the plate surface. Regardless of the position of pin 25, plate 31 is equally operable. After the pressing force of the pin 25 is released, the plate portion 31 is pressed by a spring incorporated in the limit switch 32 and returns to its original position. A compression coil spring may be provided between the support portion 35 that supports the limit switch 32 and the plate portion 31 to return the plate portion 31 to its original position. A stopper 34 is provided on the front side of the plate portion 31 so that the plate portion 31 stands at a predetermined position when it returns.

In this embodiment, an example of a mechanism in which the plate portion 31 rotates around the rotation shaft 33 has been described, but the present invention is not limited to this example. If the pin 25 presses the plate portion 31 and the plate portion 31 can move to the side opposite to the plurality of molds 3, other mechanisms can be employed. For example, a mechanism in which the plate portion 31 slides while the plate surface is vertical may be used.

The limit switch 32 is provided on the back side of the plate portion 31, is capable of coming into contact with the plate portion 31, and detects the operation of the plate portion 31. The limit switch 32 is an example of a detector. The limit switch 32 is, for example, a contactless type, but it may be a contact type. The limit switch 32 is also called a positioning switch or a position detection switch. Since the limit switch 32 detects the mechanical operation of the plate portion 31, unlike a sensor that detects the workpiece 50 or the pin 25 by electrical contact using a detection plate, the adhesion of chips to the plate portion 31 is prevented. Therefore, the workpiece 50 is not detected before the predetermined installation position of the workpiece 50 . Therefore, it is possible to prevent dimensional errors from occurring in the pressed workpiece 50 .

The timing at which the limit switch 32 detects the operation of the plate portion 31 is when the work 50 is set at a predetermined position in the mold 3 and when the work 50 is hit by the stopper of the mold 3. . By detecting the movement of the plate portion 31 at this timing and driving the mold set 2 , a through hole or notch can be formed at a predetermined position of the workpiece 50 .

In this embodiment, an example in which the plate portion 31 and the limit switch 32 are in direct contact has been described, but the present invention is not limited to this example. The limit switch 32 may detect the operation of the plate portion 31 through the member.

Also, the detection unit according to the present invention is not limited to the limit switch 32, and may be, for example, a proximity sensor. When a proximity sensor is used, a plate member or the like is installed so as to protrude from the back surface of the plate portion 31, and the proximity sensor detects the presence or absence of the plate member, thereby detecting the operation of the plate portion 31. The proximity sensor may be a high frequency oscillation type or a capacitance type. Even when the proximity sensor is used, since the mechanical movement of the plate portion 31 is detected, the work 50 is detected before the predetermined installation position of the work 50 due to the adhesion of chips to the plate portion 31. never Therefore, it is possible to prevent dimensional errors from occurring in the pressed workpiece 50 .

As described above, the mold set 2 is provided with pins 25 corresponding to each of the plurality of molds 3 . When the workpiece 50 is inserted into the mold 3, the workpiece 50 contacts one end of the pin 25, and the pin 25 installed in the mold set 2 moves along the depth direction. Next, the other end side of the pin 25 comes into contact with the plate surface of the plate portion 31 and presses the plate portion 31 .

Then, the movement of the plate portion 31 is detected by the limit switch 32 that contacts the plate portion 31 . When the detection signal from the limit switch 32 is sent to the control section 13 , the control section 13 drives the mold set 2 based on the detection result from the limit switch 32 . Specifically, the control unit 13 transmits a drive signal to the motor 6 to drive the motor 6 . The power generated by the motor 6 rotates the shaft 12 and the eccentric cam 5 via the power transmission mechanism 8 to move the upper plate 23 of the mold set 2 downward.

As a result, when processing the workpiece 50, the operator can drive the mold set 2 by inserting the workpiece 50 into the mold 3 without operating the foot switch 15 or the like. Therefore, since the operator's operation by depressing the foot switch 15 is unnecessary, the work labor is reduced. In addition, when the foot switch 15 is not used, it is not necessary to place the foot switch 15 on the floor of the working place, so that the safety of the working place can be secured and the mold set 2 can be prevented from being driven due to erroneous operation. can be done.

Furthermore, one plate portion 31 can be operated by pins 25 provided on each of the plurality of molds 3, and the limit switch 32 detects the operation of the plate portion 31. As a result, there is no need to provide a sensor for each mold 3 in order to detect the insertion of the work 50 into the mold 3, and the configuration required for detecting the work 50 is simplified.

A single plate portion 31 of the workpiece detection switch 9 has a size and shape that take into consideration the installation positions of the pins 25 assumed in advance in all mold sets 2 . Therefore, even if the mold set 2 is replaced with a different one and the installation position of the pin 25 is changed, the installation of the workpiece 50 on the mold 3 can be detected by the workpiece detection switch 9 .

In addition, since the die 3 side and the limit switch 32 side are separated by the plate portion 31 of the workpiece detection switch 9, the plate portion 31 blocks chips generated on the die 3 side. As a result, the limit switch 32 is less likely to be affected by shavings, and malfunction of the limit switch 32 is less likely to occur.

Since the work detection switch 9 only needs to be provided with one limit switch 32, the number of sensors and electric cables can be reduced. Therefore, the cost of sensors and electrical cables can be reduced. Also, the electric cable is not connected to the die set 2, but is provided to a workpiece detection switch 9 installed in the press working apparatus 1. As shown in FIG. Therefore, unlike the conventional case where a large number of electric cables are provided in the mold set, the operator can replace the mold set 2 without worrying about the electric cables. 2 is no longer required, and there is no risk of disconnection caused by forgetting to remove the electric cable when pulling out the mold set 2.例文帳に追加Furthermore, since the number of electric cables is small, they can be wired inside the frame 18, and there is no danger of cutting the exposed electric cables during press working, and deterioration of the electric cables due to oil can be prevented.

The workpiece detection switch 9 is not limited to being pre-installed in the press working device 1 according to this embodiment. The workpiece detection switch 9 can be installed in a conventionally used press working apparatus, and by improving the press working apparatus, the press working apparatus 1 according to the present embodiment including the workpiece detection switch 9 can be changed.

Since the press machine 1 includes the foot switch 15 and the switching unit 14, by switching the switching unit 14, the operator's operation for driving the mold set 2 can be detected by the foot switch 15. can also Therefore, when the workpiece detection switch 9 malfunctions, the footswitch 15 can be operated immediately. Therefore, compared with the case where the foot switch 15 is not provided, the time during which the work by the press working apparatus 1 becomes impossible does not occur.

Further, when a conventional mold set without pins 25 is installed in the press working apparatus 1 according to this embodiment, detection by the workpiece detection switch 9 cannot be performed. On the other hand, if the press machine 1 is provided with a foot switch 15, the mold set 2 can be driven by the foot switch 15 as in the conventional art. Therefore, even when the press working apparatus 1 according to the present embodiment is newly introduced, it is not necessary to replace the die set 2 according to the present embodiment, and the conventional die set without the pin 25 is still used. can do.

Reference Signs List 1: Press working device 2: Die set 3: Die 4: Die set mounting portion 5: Eccentric cam 6: Motor 7: Control panel 8: Power transmission mechanism 9: Work detection switch 10: Press working system 11: Lifter 12 : Shaft 13 : Control section 14 : Switching section 15 : Foot switch 16 : Belt 17 : Pulley 18 : Frame 19 : Receiving plate 21 : Punch 22 : Lower plate 23 : Upper plate 24 : Compression coil spring 25 : Pin 26 : Pin support portion 31: Plate portion 32: Limit switch (detection portion)
33: Rotating shaft 34: Stopper 35: Supporting part 50: Work

Claims

A press working device on which a mold set having a plurality of molds is mounted,
The plurality of molds are provided in parallel in the width direction in the mold set, and a work to be processed can be placed in each of the molds. It is insertable from the front in a vertical depth direction,
The press working device
one plate portion that moves in the opposite direction to the plurality of molds when pressed by pins provided on each of the plurality of molds;
a detection unit that detects the movement of the plate;
a foot switch for detecting a user's operation for driving the mold set;
a switching unit for switching between detection by the detection unit and detection by the foot switch;
a control unit that drives the mold set based on the detection result of the detection unit or the foot switch;
with
The plate portion and the detection portion are detachable in the press working device,
The control unit drives the mold set based on a detection result by the detection unit when switching to detection by the detection unit, and detects by the foot switch when switching to detection by the foot switch. A press working device that drives the die set based on the results.
The press working apparatus according to claim 1, wherein the plate portion is installed on the back side of the mold set and erected so that the plate surface is parallel to the width direction.
The pin is installed in the mold set, is movable along the depth direction, and has one end positioned on the workpiece side to be inserted into the plurality of molds, and the other end positioned on the plate portion side. The press working apparatus according to claim 1 or 2.
A press working system comprising a die set having a plurality of dies and a press working device on which the die set is mounted,
The plurality of molds are provided in parallel in the width direction in the mold set, and a work to be processed can be placed in each of the molds. It is insertable from the front in the vertical depth direction,
The press working device is
one plate,
a detection unit that detects the movement of the plate;
a foot switch for detecting a user's operation for driving the mold set;
a switching unit for switching between detection by the detection unit and detection by the foot switch;
a control unit that drives the mold set based on the detection result of the detection unit or the foot switch;
has
The mold set has a pin provided in each of the plurality of molds, which presses the plate portion of the press working device to move it to the side opposite to the plurality of molds,
The plate portion and the detection portion are detachable in the press working device,
The control unit drives the mold set based on a detection result by the detection unit when switching to detection by the detection unit, and detects by the foot switch when switching to detection by the foot switch. A stamping system that drives the die set based on the results.