Apparatus for press work

Abstract

To provide an apparatus for press work including a technique which effectively utilizes potential energy of a press molded product and a scrap.SOLUTION: An apparatus for press work comprises: a passage where a press molded product that is molded by pressing a magnetic material to be pressed or a scrap generated at the time of molding the press molded product are moved downward; and a power transmission device. The passage includes a coil, the press molded product and the scrap pass through inside of the coil, and the power transmission device transfers electric power generated when the press molded product or the scrap passes through the inside of the coil.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a press working device. [Background technology]

[0002] Patent Document 1 discloses an accessory device for a press machine that generates electricity by utilizing the up and down movement of the upper die of the press machine. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2018-164927 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventionally, press-molded products and scrap formed in a press working device simply fall to the bottom of the press working device, and their potential energy has not been utilized effectively. [Means for solving the problem]

[0005] The present disclosure can be realized in the following forms.

[0006] According to one aspect of the present disclosure, there is provided a press processing apparatus including: a passage through which a press-formed product formed by pressing a magnetic material to be pressed or scrap generated during the forming of the press-formed product moves downward; and a power transmission device, the passage including a coil through which the press-formed product and the scrap pass, and the power transmission device transmits electric power generated by the press-formed product or the scrap passing through the coil. According to the press working device of this type, the generated power can be transmitted to a power consuming device or a battery, thereby making it possible to effectively utilize the potential energy of the press-formed product and scrap. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is an explanatory diagram showing a schematic configuration of a press working system. [Figure 2] FIG. 10 is a circuit diagram showing an example in which power generated by a press working device is consumed by a power consuming device. DETAILED DESCRIPTION OF THE INVENTION

[0008] A. First embodiment: FIG. 1 is an explanatory diagram showing a schematic configuration of a press working system 100. The press working system 100 includes an uncoiler 10, a loop controller 20, a feeder 30, and a press working device 40. The press working device 40 is a device that presses a material 91 to form the material 91 into a press-formed product 92. In this embodiment, the material 91 is an electromagnetic steel sheet. The material 91 may be any magnetic material, such as ferritic stainless steel or martensitic stainless steel. The material 91 may also be a hot-rolled steel sheet or a cold-rolled steel sheet.

[0009] A band-shaped material to be pressed 91 wound in a coil shape is attached to the uncoiler 10. The uncoiler 10 unwinds the material to be pressed 91. The unwinding material to be pressed 91 is transported from the uncoiler 10 to the loop controller 20 and the press processing device 40 in this order.

[0010] The loop controller 20 adjusts the slack of the material 91 to be pressed supplied from the uncoiler 10, thereby suppressing flapping and bending of the material 91 to be pressed.

[0011] The feeders 30 are composed of an upstream feeder 31 and a downstream feeder 32. The upstream feeder 31 is provided upstream of the press working device 40 in the conveying direction, and the downstream feeder 32 is provided downstream of the press working device 40 in the conveying direction. Each feeder 30 is composed of a pair of rollers that sandwich the pressed material 91. The feeders 30 intermittently convey the pressed material 91 to the press working device 40 by the rotational movement of the rollers.

[0012] The stamping apparatus 40 includes a base 41, a die 50, a first passage 61, a second passage 62, a power transmission device 71, and a control unit 72. The control unit 72 is configured by a computer including one or more processors and a storage unit including a ROM and a RAM. The control unit 72 controls each part of the stamping apparatus 40 by the processor executing a program stored in the storage unit. Note that the control unit 72 may be realized by a configuration combining a plurality of circuits instead of being configured by a computer.

[0013] The die 50 is provided above the base 41. The die 50 is composed of an upper die 51 and a lower die 52. The lower die 52 is positioned vertically opposite the upper die 51. The press workpiece 91 is transported between the upper die 51 and the lower die 52 by the feeder 30. The upper die 51 is moved vertically by an elevator device (not shown). The press workpiece 91 is pressed as the upper die 51 moves vertically downward. The press workpiece 91 is pressed to form a press-formed product 92. When the press-formed product 92 is formed, scrap 93 is also generated. Here, the scrap 93 is the portion punched out of the press workpiece 91 by the press work, excluding the press-formed product 92. The press-formed product 92 is, for example, a rotor or stator of a motor. Note that scrap 93 does not necessarily have to be generated when the press-formed product 92 is formed.

[0014] A first through hole 53 and a second through hole 54 are formed in the lower die 52. The first through hole 53 and the second through hole 54 are holes that pass through the lower die 52 in the vertical direction. A third through hole 42 is formed in the base 41. The third through hole 42 is a hole that passes through the base 41 in the vertical direction and is formed in a position that communicates with the first through hole 53. The base 41 has a roller chute 43. The roller chute 43 is provided below the second through hole 54. The roller chute 43 transports an object that has passed through the second through hole 54 and fallen onto the roller chute 43 to the outside of the stamping device 40.

[0015] The first passage 61 is composed of the first through hole 53 and the third through hole 42. The second passage 62 is composed of the second through hole 54 and the roller chute 43. The first passage 61 and the second passage 62 are passages through which the press-formed product 92 or the scrap 93 moves downward. In this specification, the first passage 61 and the second passage 62 are collectively referred to as the passage 60. The passage 60 includes a coil 65. Specifically, the first passage 61 includes a first coil 66, and the second passage 62 includes a second coil 67. The press-formed product 92 and the scrap 93 pass through the inside of the first coil 66 when passing through the first passage 61, and pass through the inside of the second coil 67 when passing through the second passage 62. In FIG. 1, the arrows indicate the direction in which the press-formed product 92 and the scrap 93 move. Because the press-formed material 91 is an electromagnetic steel sheet, when the press-formed product 92 or the scrap 93 passes through the inside of the coil 65, an induced current flows in the coil 65. That is, electricity is generated by passing the press-molded product 92 or scrap 93 through the inside of the coil 65. The coil 65 is preferably made of pure copper.

[0016] The power transmission device 71 transmits power generated by the press-formed product 92 or scrap 93 passing through the inside of the coil 65 to a power consuming device. The power consuming device is, for example, lighting installed in a factory where the press working device 40 is installed, or the press working device 40 itself. Because the amount of power generated by the press-formed product 92 or scrap 93 passing through the inside of the coil 65 is small, the power consuming device is preferably a device that operates on a 100V AC voltage as its power supply voltage. Examples of devices that operate on a 100V AC voltage include the above-mentioned lighting installed in the factory, and lamps and displays installed in the press working device 40. Note that the power consuming device may also be a device that operates on a 200V AC voltage as its power supply voltage. Examples of devices that operate on a 200V AC voltage as its power supply voltage include the above-mentioned press working device 40 and machine tools other than the press working device 40 installed in the factory. In this case, the power transmission device 71 uses a converter to boost the power generated when the press-molded product 92 or the scrap 93 passes through the inside of the coil 65 to 200 V and supplies the power to the power consumption device. Note that the power transmission device 71 may also boost the above-mentioned power using a converter and transmit it to a general power grid. While FIG. 1 shows an example in which one power transmission device 71 is connected to each coil 65, one power transmission device 71 may also be connected to all of the coils 65. Furthermore, the power transmission device 71 may charge a battery by transmitting the above-mentioned power to the battery.

[0017] FIG. 2 is a circuit diagram showing an example in which power generated by the press working apparatus 40 is consumed by a power consumption device. The circuit shown in FIG. 2 includes a factory power supply 81, a switch 82, a coil 65 provided in the press working apparatus 40, and a light 83, which is a power consumption device. The factory power supply 81 is a power supply used in the factory in which the press working apparatus 40 is installed. The on / off of the switch 82 is controlled in conjunction with the operation of the press working apparatus 40. When the press working apparatus 40 is operating, i.e., when the press working apparatus 40 is generating power, the switch 82 is turned off. As a result, the light 83 is turned on using the power generated by the press working apparatus 40. When the press working apparatus 40 is not operating, i.e., when the press working apparatus 40 is not generating power, the switch 82 is turned on. As a result, the light 83 is turned on using the factory power supply 81.

[0018] According to the first embodiment described above, the press working device 40 includes the passage 60 in which the coil 65 is provided, and the press-formed product 92 or the scrap 93 moves downward while passing through the inside of the coil 65. Because the press-formed product 92 and the scrap 93 are magnetic materials, electricity is generated when the press-formed product 92 or the scrap 93 passes through the inside of the coil 65. The generated electricity is transmitted to power consumption devices and a battery by the power transmission device 71. Therefore, the potential energy of the press-formed product 92 and the scrap 93 can be effectively utilized.

[0019] B. Other Embodiments: (B-1) In the above embodiment, the stamping device 40 includes two passages 60. However, the stamping device 40 may include one passage 60, or three or more passages 60.

[0020] (B-2) In the above embodiment, the press-formed product 92 or the scrap 93 moves downward while passing through the inside of the coil 65 provided in the passage 60. In contrast, the press-formed product 92 or the scrap 93 may move downward so as to cause an induced current to flow in the coil 65. Specifically, the press-formed product 92 or the scrap 93 may pass near the coil 65 so as to cause an induced current to flow in the coil 65, rather than passing through the inside of the coil 65.

[0021] The present disclosure is not limited to the above-described embodiments and can be realized in various configurations without departing from the spirit thereof. For example, the technical features in the embodiments corresponding to the technical features in each aspect described in the Summary of the Invention section can be appropriately replaced or combined to solve some or all of the above-described problems or achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be appropriately deleted. [Explanation of symbols]

[0022] 10...Uncoiler, 20...Loop controller, 30...Feeder, 31...Upstream feeder, 32...Downstream feeder, 40...Pressing device, 41...Base, 42...Third through-hole, 43...Roller chute, 50...Die, 51...Upper die, 52...Lower die, 53...First through-hole, 54...Second through-hole, 60...Passage, 61...First passage, 62...Second passage, 65...Coil, 66...First coil, 67...Second coil, 71...Power transmission device, 72...Control unit, 81...Factory power supply, 82...Switch, 83...Lighting, 91...Material to be pressed, 92...Press-molded product, 93...Scrap, 100...Pressing system

Claims

[Claim 1] A press processing device, a passage through which a press-molded product formed by pressing a magnetic material to be pressed or scrap generated during the molding of the press-molded product moves downward; a power transmission device, the passageway comprises a coil; the press-molded product and the scrap pass through the inside of the coil; The power transmission device transmits electric power generated by the press-molded product or the scrap passing through the inside of the coil. Press processing equipment.

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