WO2023162686A1

WO2023162686A1 - Energizing device, molding device, and energizing method

Info

Publication number: WO2023162686A1
Application number: PCT/JP2023/004064
Authority: WO
Inventors: 啓山内; 清正鴻上
Original assignee: 住友重機械工業株式会社
Priority date: 2022-02-22
Filing date: 2023-02-07
Publication date: 2023-08-31

Abstract

In the present invention, an energization device that is used in a molding device for molding a metal material and that energizes the metal material comprises an energization unit for energizing the metal material and a power supply unit for supplying power to the energization unit. The power supply position at which the power supply unit supplies power to the energization unit is changed in accordance with the shape of the metal material.

Description

Energizing device, molding device, and energizing method

The present disclosure relates to an energization device, a molding device, and an energization method.

　Conventionally, a molding device that molds a heated metal material is known. For example, Patent Document 1 below describes a mold having a lower mold and an upper mold that are paired with each other, a gas supply unit that supplies gas into a metal pipe material held between the molds, and a metal pipe material that is held between the molds. and a heating section for heating metal pipe material.

Japanese Patent Application Laid-Open No. 2009-220141

Here, in the molding apparatus as described above, there are cases where a bus bar is connected in order to supply electric power to the electrodes of the heating section. However, when the shape or the like of the metal material is changed, it is necessary to change the layout of the device of the heating section, and it is necessary to recreate the busbar. Therefore, even when the layout of the apparatus is changed, it is desired that the power supply unit easily supply power to the current-carrying unit.

Therefore, an object of the present disclosure is to provide an energization device, a molding device, and an energization method that enable a power supply unit to easily supply power to an energization unit even when the layout of the device is changed.

An energization device according to an aspect of the present disclosure is an energization device that energizes a metal material and is used in a molding device that molds a metal material, and includes an energization unit that energizes the metal material and a power supply that supplies power to the energization unit. and changing the power feeding position of the power feeding part with respect to the current-carrying part according to the shape of the metal material.

An energization device according to an aspect of the present disclosure includes an energization unit that energizes a metal material and a power supply unit that energizes the energization unit. Therefore, the energizing device can energize the metal material from the energizing portion by supplying power from the power feeding portion to the energizing portion when the energizing device is energized. Here, the power supply device changes the power supply position of the power supply unit with respect to the current supply unit according to the shape of the metal material. In this case, even if the layout of the device needs to be changed according to the shape of the metal material, it is possible to easily supply power to the current-carrying parts simply by changing the power supply position. As described above, even when the layout of the device is changed, the power supply unit can easily supply power to the current-carrying unit.

The power supply may have a transmission member extending to transmit current from the power supply to the power supply location. In this case, the power supply unit can easily supply power from the power supply unit to the power supply position by means of a transmission member such as a bus bar or a water-cooled cable.

The energization device may be able to three-dimensionally change the power supply position. In this case, the energization device can arrange the power supply position at a more appropriate position according to the shape of the metal material.

The power supply unit includes a first conductive member extending in a first direction parallel to the horizontal direction, and a second conductive member connected to a predetermined position in the first direction with respect to the first conductive member. and capable of changing the connection position of the second conductive member in the first direction with respect to the first conductive member. In this case, the current-carrying portion can easily adjust the power supply position in the first direction simply by changing the connection position of the second conductive member with respect to the first conductive member.

The power supply unit includes a first conductive member extending in a first direction parallel to the horizontal direction, and a second conductive member connected to a predetermined position in the first direction with respect to the first conductive member. and a power feeding position for the second conductive member in a horizontal direction and in a second direction orthogonal to the first direction. In this case, the current-carrying portion can easily adjust the power supply position in the second direction simply by changing the power supply position with respect to the second conductive member.

The power supply unit includes a first conductive member extending in a first direction parallel to the horizontal direction, and a second conductive member connected to a predetermined position in the first direction with respect to the first conductive member. and the inclination of the second conductive member can be changed with respect to a horizontal direction and a second direction orthogonal to the first direction. In this case, the current-carrying portion can easily adjust the power feeding position in the second direction simply by changing the inclination of the second conductive member.

The power supply unit includes a first conductive member extending in a first direction parallel to the horizontal direction, a second conductive member connected to a predetermined position in the first direction with respect to the first conductive member, and a horizontal and a third conductive member connected to a predetermined position of the second conductive member in a second direction orthogonal to the direction and the first direction, wherein the thickness of the third conductive member in the vertical direction is It may be changeable. In this case, the power supply portion can easily adjust the power supply position in the vertical direction simply by changing the thickness of the third member.

The power supply unit includes a first conductive member extending in a first direction parallel to the horizontal direction, a second conductive member connected to a predetermined position in the first direction with respect to the first conductive member, and a horizontal and a third conductive member connected to a predetermined position of the second conductive portion in a second direction orthogonal to the direction and the first direction, the main surface of the third conductive member in the horizontal direction may be changeable. In this case, the current-carrying part can easily adjust the inclination of the power feeding position with respect to the horizontal direction only by changing the inclination of the main surface of the third conductive member in the horizontal direction.

A molding apparatus according to one aspect of the present disclosure includes the above-described energizing apparatus and molds a metal material.

An energization method according to an aspect of the present disclosure is a method for energizing a metal material, which is used for molding a metal material by a molding apparatus, and includes an energization unit that energizes the metal material and a power supply unit that supplies power to the energization unit. and the power supply position of the power supply unit with respect to the current supply unit may be changed according to the shape of the metal material.

According to these molding devices and energization methods, the same functions and effects as those of the energization device described above can be obtained.

According to the present disclosure, it is possible to provide an energization device, a molding device, and an energization method that allow the power supply unit to easily supply power to the energization unit even when the layout of the device is changed.

1 is a schematic configuration diagram showing a molding device according to an embodiment of the present disclosure; FIG. FIG. 2(a) is a schematic side view showing the heating and expansion unit. FIG. 2(b) is a cross-sectional view showing how the nozzle seals the metal pipe material. 1 is a schematic plan view of a molding device provided with an energizing device; FIG. It is a side view of a molding device provided with an energization device. . 4 is an enlarged cross-sectional view of the vicinity of a power supply plate; FIG. FIG. 3 is a plan view showing an embedded busbar and a plate-like busbar; FIG. 5 is a cross-sectional view taken along line VII-VII shown in FIG. 4; FIG. 8 is an enlarged cross-sectional view showing a structure near a transmission member in FIG. 7; FIG. 10 is a conceptual diagram for explaining change in power supply position; FIG. 10 is a conceptual diagram for explaining change in power supply position; FIG. 10 is a conceptual diagram for explaining change in power supply position; FIG. 10 is a conceptual diagram for explaining change in power supply position;

Preferred embodiments of the energization device and molding device according to the present disclosure will be described below with reference to the drawings. In each figure, the same or corresponding parts are denoted by the same reference numerals, and redundant explanations are omitted.

FIG. 1 is a schematic configuration diagram of a molding device 1 according to this embodiment. As shown in FIG. 1, a molding apparatus 1 is an apparatus for molding a hollow metal pipe by blow molding. In this embodiment, the molding device 1 is installed on a horizontal plane. The molding apparatus 1 includes a molding die 2 , a drive mechanism 3 , a holding section 4 , a heating section 5 , a fluid supply section 6 , a cooling section 7 and a control section 8 . In addition, in this specification, the metal pipe material 40 (metal material) refers to a hollow article before completion of molding by the molding apparatus 1 . The metal pipe material 40 is a hardenable steel type pipe material. Further, among the horizontal directions, the direction in which the metal pipe material 40 extends during molding may be referred to as the "longitudinal direction", and the direction orthogonal to the longitudinal direction may be referred to as the "width direction".

The molding die 2 is a die for molding the metal pipe 140 from the metal pipe material 40, and includes a lower die 11 and an upper die 12 facing each other in the vertical direction. The lower die 11 and the upper die 12 are constructed from steel blocks. Each of the lower die 11 and the upper die 12 is provided with a recess in which the metal pipe material 40 is accommodated. The lower mold 11 and the upper mold 12 are in close contact with each other (mold closed state), and each recess forms a target-shaped space in which the metal pipe material is to be molded. Therefore, the surface of each recess becomes the molding surface of the molding die 2 . The mold 11 on the lower side is fixed to the base 13 via a die holder or the like. The upper die 12 is fixed to the slide of the drive mechanism 3 via a die holder or the like.

The drive mechanism 3 is a mechanism that moves at least one of the lower mold 11 and the upper mold 12. In FIG. 1 , the drive mechanism 3 has a configuration that moves only the upper mold 12 . The drive mechanism 3 includes a slide 21 that moves the upper die 12 so that the lower die 11 and the upper die 12 are joined together, and a pull-back cylinder as an actuator that generates a force to lift the slide 21 upward. 22 , a main cylinder 23 as a drive source that pressurizes the slide 21 downward, and a drive source 24 that applies a drive force to the main cylinder 23 .

The holding part 4 is a mechanism that holds the metal pipe material 40 arranged between the lower mold 11 and the upper mold 12 . The holding part 4 has a lower electrode 26 and an upper electrode 27 that hold the metal pipe material 40 at one end in the longitudinal direction of the molding die 2 and a metal pipe material at the other end in the longitudinal direction of the molding die 2 . a lower electrode 26 and an upper electrode 27 holding 40; The lower electrode 26 and the upper electrode 27 on both sides in the longitudinal direction hold the metal pipe material 40 by sandwiching the end portions of the metal pipe material 40 from above and below. The upper surface of the lower electrode 26 and the lower surface of the upper electrode 27 are formed with grooves having a shape corresponding to the outer peripheral surface of the metal pipe material 40 . A driving mechanism (not shown) is provided for the lower electrode 26 and the upper electrode 27 so that they can move independently in the vertical direction.

The heating unit 5 heats the metal pipe material 40 . The heating unit 5 is a mechanism that heats the metal pipe material 40 by energizing the metal pipe material 40 . The heating unit 5 heats the metal pipe material 40 between the lower mold 11 and the upper mold 12 while the metal pipe material 40 is separated from the lower mold 11 and the upper mold 12. Heat 40; The heating unit 5 includes the lower electrode 26 and the upper electrode 27 on both sides in the longitudinal direction, and a power source 28 for supplying current to the metal pipe material 40 via these

electrodes

26 and 27 . In addition, the heating unit may be arranged in a pre-process of the molding apparatus 1 to perform heating outside.

The fluid supply unit 6 is a mechanism for supplying high-pressure fluid into the metal pipe material 40 held between the lower mold 11 and the upper mold 12. The fluid supply unit 6 supplies high-pressure fluid to the metal pipe material 40 that has been heated by the heating unit 5 to a high temperature state, thereby expanding the metal pipe material 40 . The fluid supply units 6 are provided on both ends of the molding die 2 in the longitudinal direction. The fluid supply unit 6 includes a nozzle 31 that supplies fluid from the opening at the end of the metal pipe material 40 to the inside of the metal pipe material 40, and a drive that moves the nozzle 31 forward and backward with respect to the opening of the metal pipe material 40. It comprises a mechanism 32 and a source 33 for supplying high pressure fluid into the metal pipe material 40 through the nozzle 31 . The drive mechanism 32 brings the nozzle 31 into close contact with the end of the metal pipe material 40 while ensuring sealing performance during fluid supply and exhaust, and separates the nozzle 31 from the end of the metal pipe material 40 at other times. The fluid supply unit 6 may supply gas such as high-pressure air or inert gas as the fluid. Further, the fluid supply unit 6 and the holding unit 4 having a mechanism for vertically moving the metal pipe material 40 and the heating unit 5 may be included in the same device.

The constituent elements of the holding section 4, the heating section 5, and the fluid supply section 6 may be configured as a unitized heating and expansion unit 150. FIG. 2(a) is a schematic side view showing the heating and expansion unit 150. FIG. FIG. 2(b) is a cross-sectional view showing how the nozzle 31 seals the metal pipe material 40. As shown in FIG.

As shown in FIG. 2A, the heating and expansion unit 150 includes the lower electrode 26 and the upper electrode 27 described above, an electrode mounting unit 151 mounting the

electrodes

26 and 27, the nozzle 31 and the drive mechanism 32 described above. , a lifting unit 152 and a unit base 153 . The electrode mounting unit 151 includes an elevating frame 154 and electrode frames 156 and 157 . Electrode frames 156 and 157 function as part of drive mechanism 60 that supports and moves

electrodes

26 and 27, respectively. The driving mechanism 32 drives the nozzle 31 to move up and down together with the electrode mounting unit 151 . The driving mechanism 32 includes a piston 61 holding the nozzle 31 and a cylinder 62 driving the piston. The lifting unit 152 includes a lifting frame base 64 attached to the upper surface of the unit base 153, and a lifting actuator 66 for applying a lifting motion to the lifting frame 154 of the electrode mounting unit 151 by the lifting frame base 64. ing. The elevating frame base 64 has

guide portions

64 a and 64 b that guide the elevating motion of the elevating frame 154 with respect to the unit base 153 . The lifting unit 152 functions as part of the driving mechanism 60 of the holding section 4 . The heating and expansion unit 150 has a plurality of unit bases 153 with different upper surface inclination angles, and by exchanging these bases, the lower electrode 26, the upper electrode 27, the nozzle 31, the electrode mounting unit 151, the driving mechanism 32, the lifting and lowering It is possible to collectively change and adjust the tilt angle of the unit 152 .

The nozzle 31 is a tubular member into which the end of the metal pipe material 40 can be inserted. The nozzle 31 is supported by the driving mechanism 32 so that the center line of the nozzle 31 is aligned with the reference line SL1. The inner diameter of the supply port 31a at the end of the nozzle 31 on the metal pipe material 40 side substantially matches the outer diameter of the metal pipe material 40 after expansion molding. In this state, the nozzle 31 supplies high-pressure fluid to the metal pipe material 40 from the internal flow path 63 . In addition, gas etc. are mentioned as an example of a high-pressure fluid.

Returning to FIG. 1 , the cooling unit 7 is a mechanism for cooling the molding die 2 . By cooling the molding die 2 , the cooling section 7 can rapidly cool the metal pipe material 40 when the expanded metal pipe material 40 comes into contact with the molding surface of the molding die 2 . The cooling unit 7 includes flow paths 36 formed inside the lower mold 11 and the upper mold 12 and a water circulation mechanism 37 that supplies and circulates cooling water to the flow paths 36 .

The control unit 8 is a device that controls the molding device 1 as a whole. The control unit 8 controls the drive mechanism 3 , the holding unit 4 , the heating unit 5 , the fluid supply unit 6 and the cooling unit 7 . The control unit 8 repeats the operation of molding the metal pipe material 40 with the molding die 2 .

The control unit 8 controls the actuators of the holding unit 4 so that the metal pipe material 40 is supported by the lower electrodes 26 on both sides in the longitudinal direction, and then the upper electrodes 27 are lowered to sandwich the metal pipe material 40. . For example, the control unit 8 controls the transfer timing from a transfer device such as a robot arm, and arranges the metal pipe material 40 between the lower mold 11 and the upper mold 12 in the open state. good. Alternatively, the control unit 8 may be manually arranged by an operator to place the metal pipe material 40 between the lower mold 11 and the upper mold 12 . Moreover, the control part 8 controls the heating part 5, and energizes and heats the metal pipe material 40. As shown in FIG. As a result, an axial current flows through the metal pipe material 40, and the electrical resistance of the metal pipe material 40 itself causes the metal pipe material 40 itself to generate heat due to Joule heat. A plurality of controllers 8 may be installed according to the control target device.

The control unit 8 controls the drive mechanism 3 to lower the upper mold 12 and bring it closer to the lower mold 11 to close the molding mold 2 . On the other hand, the control unit 8 controls the fluid supply unit 6 to seal the openings at both ends of the metal pipe material 40 with the nozzles 31 and supply the fluid. As a result, the metal pipe material 40 softened by heating expands and comes into contact with the molding surface of the molding die 2 . And the metal pipe material 40 is shape|molded so that the shape of the shaping|molding surface of the shaping|molding die 2 may be followed. When forming a metal pipe with a flange, after part of the metal pipe material 40 is introduced into the gap between the lower mold 11 and the upper mold 12, the mold is further closed, The entry portion is crushed to form a flange portion. When the metal pipe material 40 comes into contact with the molding surface, the metal pipe material 40 is quenched by being rapidly cooled by the cooling part 7 with the molding die 2 .

Next, configurations of the molding device 1 and the energization device 100 will be described with reference to FIGS. 3 and 4. FIG. FIG. 3 is a schematic plan view of the molding apparatus 1 including the energizing device 100. FIG. FIG. 4 is a side view of the molding apparatus 1 including the energizing device 100. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. Further, FIG. 4 shows members related to the current-carrying portion 70 of the heating and expansion unit 150, and other members are appropriately simplified or omitted.

The energizing device 100 is a device for energizing the metal pipe material 40 used in the forming device 1 for forming the metal pipe material 40 . As shown in FIGS. 3 and 4 , the energization device 100 includes an energization section 70 and a power supply section 71 . The energization unit 70 is a mechanism that energizes the metal pipe material 40 . The energizing section 70 is a mechanism including the

electrodes

26 and 27 described above, and is a mechanism for energizing the metal pipe material 40 in the heating/expansion unit 150 . The power supply unit 71 is a mechanism that supplies power to the current-carrying unit 70 . The power supply unit 71 electrically connects the power source 28 (electricity supply unit) and the power supply unit 70 . In addition, in the following description, the XYZ coordinate system may be used. The X-axis direction (second direction) is the longitudinal direction of the axis of the metal pipe material 40 during molding in the horizontal direction. The Y-axis direction (first direction) is a direction perpendicular to the longitudinal direction. The Z-axis direction is the vertical direction. One side in the X-axis direction and the Y-axis direction is the positive side, and the upper side is the positive side in the Z-axis direction.

The energizing device 100 includes a energizing portion 70 and a power feeding portion 71 for the positive end of the metal pipe material 40 in the X-axis direction, and a energizing portion 70 and a power feeding portion for the negative end of the metal pipe material 40 in the X-axis direction. 71 and.

The power feeding portion 71 has

transmission members

72 and 73 extending to transmit current from the power supply 28 to the power feeding position EP. The transmission member 72 is a member provided on the power supply 28 side. The transmission member 72 extends from the power supply 28 to near the end of the base 13 of the molding apparatus 1 on the positive side in the Y-axis direction. The transmission member 73 is a member provided on the base 13 side. The transmission member 73 extends from near the end of the base 13 on the positive side in the Y-axis direction to the power supply position EP. The negative end of the transmission member 72 in the Y-axis direction is connected to the positive end of the transmission member 73 in the Y-axis direction via a connector 74 (see also FIG. 5). The transmission member 73 is mounted on a movable bolster truck 160 together with the base 13 (see FIG. 4). Accordingly, the transmission member 73 can be removed from the transmission member 72 by removing it from the connector 74 . In addition, although the connector 74 is provided so that the base 13 can be placed on the mobile carriage and moved, another electrical path attachment/detachment mechanism may be provided.

The transmission member 72 is configured by a bus bar formed of a conductive member extending like a belt. In addition, in the embodiment shown in FIG. 3, the power supply 28 is arranged at a position closer to the negative side in the X-axis direction with respect to the molding die 2 . Therefore, the transmission member 72 for the conductive portion 70 on the positive side in the X-axis direction extends so as to wrap around to the positive side in the X-axis direction more than the transmission member 72 for the conductive portion 70 on the negative side in the X-axis direction. A cover portion 75 is provided around the transmission member 72 to prevent contact from the outside.

As shown in FIG. 4 , the conducting section 70 includes the

electrodes

26 and 27 described above, a power supply plate 76 and a conductive path 77 . The power supply plate 76 contacts the power supply surface 80 of the transmission member 73 at the power supply position EP. As a result, the power supply plate 76 is supplied with power from the power supply surface 80 of the transmission member 73 . The power supply plate 76 is a plate-like member extending parallel to the XY plane. The power supply plate 76 is arranged inside a through portion 153a penetrating vertically through the unit base 153 .

Here, as shown in FIG. 5, the power supply plate 76 is provided with a conductive elastic body 78 . The conductive elastic body 78 is fitted in a groove formed in the power supply plate 76 . As a result, even when a gap is formed between the lower surface 76a of the power supply plate 76 and the power supply surface 80 of the transmission member 73, power can be supplied through the elastically deformable conductive elastic body 78. It's becoming

As shown in FIG. 4, the conductive path 77 is connected to the lower electrode 26 at one end and to the power supply plate 76 at the other end. As a result, the conductive path 77 supplies the current supplied by the power supply plate 76 to the lower electrode 26 . The shape of the conductive path 77 is not particularly limited, and may be changed as appropriate.

In this embodiment, the power supply device 100 can change the power supply position EP of the power supply part 71 with respect to the power supply part 70 according to the shape of the metal pipe material 40 . The energization device 100 can three-dimensionally change the power feeding position EP. Being three-dimensionally changeable means that the energization device 100 can change at least the power feeding position EP in the X-axis direction, the power feeding position EP in the Y-axis direction, and the power feeding position EP in the Z-axis direction. Furthermore, the energizing device 100 can also change the inclination of the power supply position EP with respect to the XY plane and the inclination of the power supply position EP with respect to the X-axis direction. A structure for changing the power feeding position EP according to the shape of the metal pipe material 40 by the energizing device 100 will be described with reference to FIGS. 4 and 6 to 8. FIG. FIG. 6 is a plan view showing the embedded busbar 81 and the plate-shaped busbar 83. As shown in FIG. FIG. 7 is a cross-sectional view taken along line VII--VII shown in FIG. FIG. 8 is an enlarged sectional view showing the structure near the transmission member 73 in FIG.

As shown in FIG. 4, the transmission member 73 of the power supply portion 71 includes an embedded bus bar 81 (first conductive member), a block conductor 82, a plate-shaped bus bar 83 (second conductive member), and a block conductor 84 ( a third conductive member);

The embedded busbar 81 is a strip-shaped conductive member embedded in the base 13 and extending in the Y-axis direction. The Y-axis direction positive side end of the embedded bus bar 81 is arranged at a position protruding from the Y-axis direction positive side end of the base 13 . The Y-axis direction positive end of the embedded bus bar 81 is connected to the connector 74 via a joint member 86 . The Y-axis direction negative side end of the embedded bus bar 81 is disposed near the Y-axis direction negative side end of the base 13 . The embedded bus bar 81 extends parallel to the Y-axis direction while having a constant width. The thickness direction of the embedded bus bar 81 is parallel to the vertical direction (Z-axis direction). The upper surface of the embedded busbar 81 is embedded at a position lower than the upper surface of the base 13 .

A plurality of tile-shaped insulating plates 87 are provided on the upper surface of the embedded busbar 81 . A plurality of insulating plates 87 are arranged in the Y-axis direction and fixed to the embedded bus bar 81 (see FIG. 6). The upper surface of the insulating plate 87 is arranged at the same height as the upper surface of the base 13 . The insulating plate 87 is fixed to the embedded bus bar 81 by screwing. Therefore, the insulating plate 87 at a desired position can be removed from the embedded bus bar 81 by removing the screw.

The block conductor 82 is a conductive member fixed to the embedded bus bar 81 at the location where the insulating plate 87 is removed. The block conductor 82 is fixed to the embedded busbar 81 by screwing with its lower surface in contact with the upper surface of the embedded busbar 81 . Since the block conductor 82 is a member that can be replaced with any insulating plate 87 , it has the same shape as the insulating plate 87 . Thereby, the block conductor 82 can change the electricity extraction position in the longitudinal direction (Y-axis direction) of the embedded bus bar 81 .

The plate-shaped busbar 83 is a conductive member connected to the embedded busbar 81 at a predetermined position in the Y-axis direction. The plate-shaped bus bar 83 is fixed to the block conductor 82 by screwing with the lower surface in contact with the upper surface of the block conductor 82 . As shown in FIG. 6, the plate-like bus bar 83 has a rectangular shape whose longitudinal direction is the X-axis direction. The plate-shaped bus bar 83 is arranged so that the region E1 near the positive end in the X-axis direction protrudes from the positive end in the X-axis direction of the embedded bus bar 81 and the block conductor 82 . Thereby, the plate-shaped bus bar 83 is supported on the upper surface of the base 13 in the region E1 protruding from the block conductor 82 on the positive side in the X-axis direction (see FIG. 7). With the above configuration, the block conductor 82 is arranged above the embedded busbar 81 and below the plate-like busbar 83 . Note that the block conductor 82 and the plate-like bus bar 83 may be configured as an integral member.

As shown in FIG. 8, an insulating material 88 is provided between the embedded busbar 81, the block conductor 82, and the plate-like busbar 83. The insulating material 88 is formed so as to cover the bottom surfaces of the embedded busbars 81 and the plate-like busbars 83 and the side surfaces of the embedded busbars 81 and the block conductors 82 .

The block conductor 84 is a conductive member connected to a predetermined position of the plate-shaped bus bar 83 in the X-axis direction. The block conductor 84 is fixed to the plate-like bus bar 83 by screwing with its lower surface in contact with the upper surface of the plate-like bus bar 83 . The block conductor 84 is fixed to the region E<b>1 of the plate-like busbar 83 . The upper surface of the block conductor 84 constitutes the feeding surface 80 of the feeding portion 71, that is, the feeding position EP. Therefore, the height of the power feeding position EP is adjusted by the thickness of the block conductor 84 . Further, the power supply position EP is arranged at a position shifted from the plate-shaped bus bar 83 to the negative side in the X-axis direction at an arbitrary position in the Y-axis direction of the plate-shaped bus bar 83 . The block conductor 82 , plate-shaped bus bar 83 , and block conductor 84 are arranged inside the through portion 153 a of the unit base 153 .

Next, the contents when the energization device 100 three-dimensionally changes the power supply position EP will be described. In other words, an energization method for changing the power feeding position EP of the power feeding portion 71 with respect to the energizing portion 70 according to the shape of the metal pipe material 40 will be described.

For example, as shown in FIG. 9A, when the position of the heating expansion unit 150 is changed to the negative side in the X-axis direction according to the length of the metal pipe material 40, the power feeding position EP is set to It is necessary to change to the negative side. On the other hand, as shown in FIG. 11(a), the energizing device 100 can change the power feeding position EP with respect to the plate-shaped bus bar 83 in the X-axis direction. That is, the fixing position of the block conductor 84 with respect to the plate-like bus bar 83 in the X-axis direction is changed to the negative side in the X-axis direction. As a result, the power feeding position EP is changed to the negative side in the X-axis direction.

For example, as shown in FIG. 9B, when the position of the heating expansion unit 150 is changed to the positive side in the X-axis direction according to the length of the metal pipe material 40, the power supply position EP is set to It is necessary to change to the positive side. On the other hand, as shown in FIG. 11(b), the energizing device 100 can change the power feeding position EP with respect to the plate-shaped bus bar 83 in the X-axis direction. That is, the plate-like bus bar 83 is made longer than that shown in FIG. 9(a). Also, the fixed position in the X-axis direction of the block conductor 84 with respect to the plate-shaped bus bar 83 is changed to the positive side in the X-axis direction. As a result, the power supply position EP changes to the positive side in the X-axis direction.

For example, as shown in FIG. 9C, when the position of the heating expansion unit 150 is changed to the positive side in the Y-axis direction according to the shape of the metal pipe material 40, the power feeding position EP Need to change side. On the other hand, as shown in FIG. 11(c), the energizing device 100 can change the connecting position of the plate-shaped bus bar 83 to the embedded bus bar 81 in the Y-axis direction. That is, the fixing position of the plate-like busbar 83 with respect to the embedded busbar 81 in the Y-axis direction is changed to the positive side in the Y-axis direction. As a result, the power supply position EP is changed to the positive side in the Y-axis direction.

For example, as shown in FIG. 9D, when the heating expansion unit 150 is tilted with respect to the X-axis direction depending on the shape of the metal pipe material 40, it is necessary to tilt the power feeding position EP with respect to the X-axis direction. . On the other hand, as shown in FIG. 11(d), the energization device 100 can change the inclination of the plate-shaped bus bar 83 with respect to the X-axis direction. That is, the inclination of the plate-shaped busbar 83 with respect to the embedded busbar 81 with respect to the X-axis direction is changed. As a result, the inclination of the power feeding position EP with respect to the X-axis direction is changed.

For example, as shown in FIG. 10(a), when the positions of the

electrodes

26 and 27 of the heating expansion unit 150 are changed upward according to the shape of the metal pipe material 40, it is necessary to change the feeding position EP upward. There is On the other hand, as shown in FIG. 12(a), the energization device 100 can change the thickness of the block conductor 84 in the vertical direction. That is, the thickness of the block conductor 84 is changed to be large. As a result, the power supply position EP is changed upward.

For example, as shown in FIG. 10B, when the

electrodes

26 and 27 of the heating expansion unit 150 are tilted with respect to the horizontal direction according to the shape of the metal pipe material 40, the power feeding position EP is tilted with respect to the horizontal direction. There is a need. On the other hand, as shown in FIG. 12(b), the energization device 100 can change the inclination of the main surface of the block conductor 84 in the horizontal direction. That is, the upper surface of the block conductor 84 is changed to be inclined. As a result, the power feeding position EP is tilted with respect to the horizontal direction.

Next, the functions and effects of the energization device 100, the molding device 1, and the energization method according to this embodiment will be described.

The energization device 100 according to this embodiment includes an energization unit 70 that energizes the metal pipe material 40 and a power supply unit 71 that supplies power to the energization unit 70 . Therefore, the energizing device 100 can energize the metal pipe material 40 from the energizing part 70 by supplying power from the power feeding part 71 to the energizing part 70 at the time of energization. Here, the power supply device 100 changes the power supply position EP of the power supply part 71 with respect to the power supply part 70 according to the shape of the metal pipe material 40 . In this case, even if the layout of the apparatus needs to be changed according to the shape of the metal pipe material 40, power can be easily supplied to the current-carrying portion 70 simply by changing the power supply position EP. As described above, even when the layout of the device is changed, the power supply unit can easily supply power to the current-carrying unit.

The power supply portion 71 may have

transmission members

72 and 73 extending to transmit current from the power supply 28 to the power supply position EP. In this case, the power supply unit 71 can easily supply power from the power supply 28 to the power supply position EP by means of

transmission members

72 and 73 such as bus bars and water-cooled cables.

The energization device 100 may be able to change the power supply position EP three-dimensionally. In this case, the energization device 100 can arrange the power feeding position EP at a more appropriate position according to the shape of the metal pipe material 40 .

The power feeding portion 71 has an embedded busbar 81 extending in the Y-axis direction parallel to the horizontal direction, and a plate-like busbar 83 connected to the embedded busbar 81 at a predetermined position in the Y-axis direction. It may be possible to change the connection position of the plate-shaped bus bar 83 in the Y-axis direction. In this case, the current-carrying portion 70 can easily adjust the power supply position EP in the Y-axis direction simply by changing the connection position of the plate-like busbar 83 with respect to the embedded busbar 81 .

The power supply portion 71 has an embedded busbar 81 extending in the Y-axis direction parallel to the horizontal direction, and a plate-like busbar 83 connected to the embedded busbar 81 at a predetermined position in the Y-axis direction. It may be possible to change the power supply position EP with respect to the plate-shaped bus bar 83 in the X-axis direction perpendicular to the Y-axis direction. In this case, the power supply portion 70 can easily adjust the power supply position EP in the X-axis direction only by changing the power supply position EP with respect to the plate-shaped bus bar 83 .

The power supply portion 71 has an embedded busbar 81 extending in the Y-axis direction parallel to the horizontal direction, and a plate-like busbar 83 connected to the embedded busbar 81 at a predetermined position in the Y-axis direction. The orientation or angle of the plate-like bus bar 83 may be changeable on the XY plane formed in the X-axis direction orthogonal to the Y-axis direction. In this case, the conducting section 70 can easily adjust the orientation of the power feeding position EP on the XY plane simply by changing the orientation or angle of the plate-shaped bus bar 83 .

The power feeding portion 71 includes an embedded bus bar 81 extending in the Y-axis direction parallel to the horizontal direction, a plate-like bus bar 83 connected to the embedded bus bar 81 at a predetermined position in the Y-axis direction, and a horizontal and Y-axis direction. and a block conductor 84 connected to a predetermined position of the plate-shaped bus bar 83 in the orthogonal X-axis direction, and the thickness of the block conductor 84 in the vertical direction may be changeable. In this case, the power supply portion 70 can easily adjust the power supply position EP in the vertical direction (Z-axis direction) simply by changing the thickness of the block conductor 84 .

The power feeding portion 71 includes an embedded bus bar 81 extending in the Y-axis direction parallel to the horizontal direction, a plate-like bus bar 83 connected to the embedded bus bar 81 at a predetermined position in the Y-axis direction, and a horizontal and Y-axis direction. and a block conductor 84 connected to a predetermined position of the plate-shaped bus bar 83 in the orthogonal X-axis direction, and the inclination of the main surface of the block conductor 84 in the horizontal direction may be changeable. In this case, the current-carrying portion 70 can easily adjust the inclination of the power supply position EP with respect to the horizontal direction only by changing the inclination of the main surface of the block conductor 84 in the horizontal direction.

The molding apparatus 1 according to this embodiment includes the above-described energization apparatus 100 and molds the metal pipe material 40 .

The energization method according to the present embodiment is a method for energizing the metal pipe material 40, which is used for molding the metal pipe material 40 by the molding apparatus 1, and includes an energization unit 70 for energizing the metal pipe material 40, and an energization unit 70. , and the power supply position EP of the power supply unit 71 with respect to the current supply unit 70 may be changed according to the shape of the metal pipe material 40 .

According to the molding apparatus 1 and the energization method, it is possible to obtain the same functions and effects as those of the energization apparatus 100 described above.

The present disclosure is not limited to the above-described embodiments. For example, the overall configuration of the molding apparatus is not limited to that shown in FIG. 1, and can be changed as appropriate without departing from the gist of the disclosure.

Also, the structure of each of the conductive members 81 to 84 of the power supply portion 71 is merely an example, and can be changed as appropriate without departing from the gist of the disclosure.

In the above-described embodiment, a busbar is used as the transmission member, but a water-cooled cable may be used as the transmission member. However, using multiple large-diameter water-cooled cables that lack flexibility in order to pass a large current results in a lack of compactness, the complexity of water-cooling the water-cooled cables, and a large-scale attachment / detachment mechanism for the connector part. There are also issues that require Therefore, it is more preferable to use a busbar as a transmission member.

The molding device may be a molding device that heats a metal material, and a hot stamping molding device may be employed.

[Mode 1]
An energization device for energizing the metal material, which is used in a molding device for molding the metal material,
a current-carrying part that energizes the metal material;
A power supply unit that supplies power to the current-carrying unit,
An energizing device that changes a power feeding position of the power feeding portion with respect to the energizing portion according to the shape of the metal material.
[Mode 2]
The energization device according to form 1, wherein the power supply unit has a transmission member extending to transmit current from the power supply unit to the power supply position.
[Mode 3]
The energizing device according to

mode

1 or 2, wherein the power feeding position can be changed three-dimensionally.
[Mode 4]
The power supply unit
a first conductive member extending in a first direction parallel to the horizontal direction;
a second conductive member connected to the conductive member at a predetermined position in the first direction;
The energizing device according to any one of modes 1 to 3, wherein the connection position of the second conductive member in the first direction with respect to the first conductive member can be changed.
[Mode 5]
The power supply unit
a first conductive member extending in a first direction parallel to the horizontal direction;
a second conductive member connected to the first conductive member at a predetermined position in the first direction;
5. The energization device according to any one of modes 1 to 4, wherein the power feeding position for the second conductive member can be changed in a second direction orthogonal to the horizontal direction and the first direction.
[Mode 6]
The power supply unit
a first conductive member extending in a first direction parallel to the horizontal direction;
a second conductive member connected to the first conductive member at a predetermined position in the first direction;
The energization device according to any one of modes 1 to 5, wherein the inclination of the second conductive member can be changed with respect to a second direction orthogonal to the horizontal direction and the first direction.
[Mode 7]
The power supply unit
a first conductive member extending in a first direction parallel to the horizontal direction;
a second conductive member connected to a predetermined position in the first direction with respect to the first conductive member;
a third conductive member connected to a predetermined position of the second conductive member in a second direction orthogonal to the horizontal direction and the first direction;
7. The energization device according to any one of modes 1 to 6, wherein the thickness of the third conductive member in the vertical direction can be changed.
[Mode 8]
The power supply unit
a first conductive member extending in a first direction parallel to the horizontal direction;
a second conductive member connected to a predetermined position in the first direction with respect to the first conductive member;
a third conductive member connected to a predetermined position of the second conductive portion in a second direction orthogonal to the horizontal direction and the first direction;
The energization device according to any one of modes 1 to 7, wherein the inclination of the main surface of the third conductive member in the horizontal direction can be changed.
[Mode 9]
A molding apparatus comprising the energization apparatus according to any one of modes 1 to 8, and molding the metal material.
[Form 10]
A method for energizing a metal material used for molding the metal material by a molding apparatus,
a current-carrying unit that energizes the metal material;
energizing using an energizing device including a power feeding unit that supplies power to the energizing unit;
A power supply method, wherein a power supply position of the power supply unit with respect to the current supply unit is changed according to the shape of the metal material.

DESCRIPTION OF SYMBOLS 1... Forming apparatus, 40... Metal pipe material (metal material), 70... Current-carrying part, 71... Power supply part, 81... Embedded busbar (first conductive member), 83... Plate-like busbar (second conductive member), 84: block conductor (third conductive member), 100: energizing device.

Claims

An energization device for energizing the metal material, which is used in a molding device for molding the metal material,
a current-carrying part that energizes the metal material;
A power supply unit that supplies power to the current-carrying unit,
An energizing device that changes a power feeding position of the power feeding portion with respect to the energizing portion according to the shape of the metal material.
The power supply device according to claim 1, wherein the power supply unit has a transmission member extending to transmit current from the power supply unit to the power supply position.
The energization device according to claim 1, wherein the power supply position can be changed three-dimensionally.
The power supply unit
a first conductive member extending in a first direction parallel to the horizontal direction;
a second conductive member connected to the conductive member at a predetermined position in the first direction;
2. The energization device according to claim 1, wherein the connection position of said second conductive member in said first direction with respect to said first conductive member can be changed.
The power supply unit
a first conductive member extending in a first direction parallel to the horizontal direction;
a second conductive member connected to the first conductive member at a predetermined position in the first direction;
2. The power supply device according to claim 1, wherein said power feeding position for said second conductive member can be changed in a second direction orthogonal to said horizontal direction and said first direction.
The power supply unit
a first conductive member extending in a first direction parallel to the horizontal direction;
a second conductive member connected to the first conductive member at a predetermined position in the first direction;
The energization device according to claim 1, wherein the inclination of said second conductive member can be changed with respect to a second direction orthogonal to said horizontal direction and said first direction.
The power supply unit
a first conductive member extending in a first direction parallel to the horizontal direction;
a second conductive member connected to a predetermined position in the first direction with respect to the first conductive member;
a third conductive member connected to a predetermined position of the second conductive member in a second direction orthogonal to the horizontal direction and the first direction;
The energization device according to claim 1, wherein the thickness of said third conductive member in the vertical direction can be changed.
The power supply unit
a first conductive member extending in a first direction parallel to the horizontal direction;
a second conductive member connected to a predetermined position in the first direction with respect to the first conductive member;
a third conductive member connected to a predetermined position of the second conductive portion in a second direction orthogonal to the horizontal direction and the first direction;
The energization device according to claim 1, wherein the inclination of the main surface of said third conductive member in said horizontal direction can be changed.
A molding apparatus comprising the energization apparatus according to claim 1 and molding the metal material.
A method for energizing a metal material used for molding the metal material by a molding apparatus,
a current-carrying unit that energizes the metal material;
energizing using an energizing device including a power feeding unit that supplies power to the energizing unit;
A power supply method, wherein a power supply position of the power supply unit with respect to the current supply unit is changed according to the shape of the metal material.