JP2018039038A - Press working metal mould - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel metal mould capable of improving the working efficiency of a press working and adding a new function to improve a press working technique.SOLUTION: A mould (2) comprises: an upper mould (3) to be attached to the slide (14) of a press (1); a lower mould (4) attached to the bolster (12) of said press; and a power generation device (5) mounted on said upper mould and/or said lower mould and driven by the vertical motions of the upper mould at the execution time of the presswork thereby to supply an electric power to a functional device relating to said press work.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a press mold for processing a metal material into a desired shape, and more particularly to a press mold to which a power generation function is added so that electric power can be supplied from the mold.

  One technique for processing a metal material into a desired shape is pressing. In general, press processing is performed by manufacturing a pair of upper and lower molds corresponding to the product shape and sandwiching a metal material as a material, thereby performing various processes such as bending, punching, drawing and crushing. . Some products can be completed by a single press, but in the case of complex shapes, the product is completed through a plurality of pressing steps using a plurality of molds.

  FIG. 6 shows a schematic overall view of a small press 1 as an example of a press. In the press machine 1, a bolster 12 for mounting the lower mold 11 is disposed in the work space on the front side of the apparatus, and a slide 14 for mounting the upper mold 13 is disposed on the upper side thereof. The slide 14 can be moved up and down by a mechanical or hydraulic drive mechanism incorporated in the press machine body.

  At the time of executing the press work, the operator arranges a metal material as a material on the lower mold 11 and performs a preparatory work such as oil application, and then a switch provided in the operation unit 15 or the like. Is operated to lower the slide 14. As a result, the upper die 13 is lowered and meshed with the lower die 11 to press the metal material, and then the slide 14 is raised to release the upper die. When the press is thus completed, the worker removes the metal material from the lower mold 11 and executes the same press on the next metal material. When a series of operations are repeated and, for example, lot-by-lot pressing is completed, the operator replaces the press machine dies (11, 13) with dies for the next process, and presses the next process in the same procedure. Execute.

  In a continuous process, there is a case where a camera, a sensor or the like is installed near the processing part of the metal material and monitoring is performed to determine whether the press work is good or bad. However, the conventional press 1 has a problem that it takes time to reconnect the electrical wiring between the camera and sensor and the power source of the press machine every time the mold (11, 13) is replaced. was there. The greater the number of processes, the greater the burden on the workers associated with mold replacement.

  Furthermore, the troublesome work associated with the replacement of the dies (11, 13) is an obstacle to the attempt to further improve the technology of press working by adding new functional devices in addition to cameras and sensors. I think that has become.

JP 2014-236638 A

  In relation to the press and electric power, Patent Document 1 discloses that a pressure receiving portion that receives pressure when the slide rises is newly installed in the press body, and the force received by the pressure receiving portion when the slide rises is rotated. A technique for converting to a power source for a power generation turbine is disclosed. That is, a press machine that uses the vertical movement of the slide for power generation is disclosed.

  However, the technique disclosed in Patent Document 1 is intended to cover a part of the power source of the power generation turbine, and only uses the vertical movement of the press machine and other devices in the factory for energy saving. It does not attempt to improve the working efficiency or technology of press working.

  That is, the present invention has been made based on such circumstances, and the object thereof is to improve the work efficiency of press working and to add a new function to improve the press working technique. It is to provide a new mold that can be used.

The gist of the present invention is as follows.
(1) A press working mold of the present invention is a mold that is attached to a press machine and presses a metal material into a desired shape, and is an upper mold that is attached to a slide of the press machine, A lower die attached to a bolster of a press machine, and provided in the upper die and / or the lower die, and is driven by the vertical movement of the upper die during execution of the press work to generate power, and related to the press work And a power generation device that supplies power to the functional device.
(2) As a preferable example, the power generator includes a rack gear that is moved up and down by the upper mold, a speed reducer that is configured by a gear group that is rotated by the rack gear, and a rotary shaft that is rotated by the speed reducer. And a power generation motor.
(3) Functional devices that operate with the electric power from the power generation device include an oil supply device that applies oil to a metal material to be pressed, a visualization device that includes LEDs for visualizing the quality of presses, IC tags, and IT Equipment, in-mold tap unit, in-mold transfer device, electric cylinder, in-mold camera, sensing device, power supply device that supplies electricity to the punch to obtain the coating effect, electricity to the metal material to obtain the squeezing effect It is preferable that the power supply device is at least one of a power supply device that supplies electricity to the mold in order to obtain a rust prevention effect, a storage device that stores information on production status, and a heat retention device that warms the mold.

  According to the present invention, the upper mold attached to the slide of the press machine, the lower mold attached to the bolster of the press machine, and the upper mold and / or the lower mold are provided, and the upper mold is executed during the press work. And a power generator that is driven by the vertical movement of the mold to generate power and supply power to the functional device related to the press working. The burden is reduced. Furthermore, the willingness to increase the added value of the mold by adding a functional device other than monitoring is improved.

  Furthermore, the above configuration also has a great advantage that a unit in which a mold, a functional device, and a power generation device are integrated can be formed. This is advantageous not only in the mounting to the press machine but also in the design / manufacturing and transportation of the mold.

  As a further preferred example, by adopting a power generation device configured to include a rack gear, a reduction gear configured by a gear group rotated by the rack gear, and a power generation motor having a rotation shaft rotated by the reduction gear, The power generation device can be accommodated in a space in the mold.

  Further, as a preferred example, a functional device that operates with electric power from the power generation device, an oil supply device that applies oil to a metal material to be pressed, a visualization device that includes an LED that visualizes the quality of a press, and an IC Tag, IT equipment, in-mold tap unit, in-mold transfer device, electric cylinder, in-mold camera, sensing device, power supply device that supplies electricity to punch to obtain coating effect, metal material to obtain aperture effect At least one or more of a power supply device that supplies electricity, a power supply device that supplies electricity to a mold to obtain a rust prevention effect, a storage device that stores information on production status, and a heat retention device that warms the mold New functions can be added to improve the press working technique, and the added value of the mold can be increased.

It is a longitudinal cross-sectional view of the metal mold | die for press work according to preferable embodiment of this invention. It is a perspective view of the metal mold | die for the said press work. It is a perspective view of the electric power generating apparatus installed in the said metal mold | die. It is an internal block diagram of the said electric power generating apparatus. It is a figure explaining operation | movement when performing press work with the said metal mold | die. 1 is a schematic overall view of a press machine.

  Hereinafter, a die for press working according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, the technical scope of the present invention is not construed as being limited by the embodiments described below.

  As an example of a press working die according to the present embodiment, FIGS. 1 and 2 show a die 2 that performs a punching process on a metal material. For punching, a plurality of punches and dies may be used, or processing such as drawing may be performed simultaneously. However, in order to make the invention easier to understand, FIGS. 1 and 2 show a single punch and die. The structure of the basic metal mold | die 2 which performs the punching process is illustrated. Further, the basic configuration of the mold is the same in processing other than punching, and the configuration of the power generation function of this embodiment can be applied.

  As shown in FIGS. 1 and 2, the mold 2 is composed of a pair of upper and lower upper molds 3 and 4. The upper mold 3 is attached to the slide 14 of the press 1 by, for example, a flange-type shank (not shown). On the other hand, the lower die 4 is mounted on the bolster 12 of the press machine 1. The upper die 3 has a punch holder 31 made of a substantially rectangular flat plate at the uppermost position, and a backing plate 32 and a punch plate 33 having a smaller plane area than the punch holder 31 are arranged on the lower surface thereof. Yes. The punch holder 31, the backing plate 32, and the punch plate 33 are fixed to each other by fixing means such as bolts. A cylindrical punch 34 for punching a metal material M as a material into a circular shape is fixedly disposed on the punch plate 33 at the center of the upper mold 3. Further, a stripper plate 35 is disposed on the upper mold 3 so as to be positioned downward from the punch plate 33, and the head is suspended by a stripper bolt 36 engaged with the upper surface of the backing plate 32. It is supported. The stripper bolt 36 urges the stripper plate 35 downward by the extending action of the spring 36a arranged in the axial direction.

  Cylindrical stripper guides 37 are fixedly arranged at, for example, four corners of a punch plate 33 made of a substantially rectangular flat plate. The stripper guide 37 extends downward through a circular hole formed in the stripper plate 35, and penetrates into a cylindrical guide bush 46 formed in a die plate 43, which will be described later, when performing press working. It is supposed to be. Furthermore, a cylindrical guide bush 38 into which a columnar guide post 47 provided in a die holder 41 described later is inserted is provided at, for example, a diagonal corner of the punch holder 31.

  On the other hand, in the lower mold 4, a die holder 41 made of a substantially rectangular flat plate is disposed at the lowest position, and a backing plate 42 and a die plate 43 having a smaller plane area than the die holder 41 are disposed on the upper surface side thereof. Has been. The die holder 41, the backing plate 42, and the die plate 43 are fixed to each other by fixing means such as bolts. A cylindrical die 44 for removing the surface of the metal material M in a circle in cooperation with the punch 34 is fixedly disposed on the die plate 43 at the center of the lower mold 4. Furthermore, pins 45 for positioning the metal material M are provided on the upper surface of the die plate 43. A positioning plate or the like may be used in place of the pin 45.

  Cylindrical guide bushes 46 through which the stripper guide 37 of the upper mold 3 penetrates are provided at, for example, the four corners of the die plate 43 and the backing plate 42 which are substantially rectangular flat plates. Further, a columnar guide post 47 penetrating into a cylindrical guide bush 38 provided in the upper mold 3 is provided at, for example, a corner on the diagonal line of the die holder 41.

  Furthermore, as shown in FIG. 2, the power generation apparatus 5 is disposed on the upper surface of the die holder 41 facing the lower surface of the punch holder 31 in the mold 2 of the present embodiment. Furthermore, a functional device 6 that operates by being supplied with electric power from the power generation device 5 is also disposed in the mold. Since the functional devices 6 related to press working are various as described later, in FIG. 2, for convenience, the upper surface of the die holder 41 is illustrated by a square frame. As shown in detail in FIG. 3, for example, the power generation device 5 includes a main body 51 formed of a housing made of a resin material such as plastic, and a vertically movable leg that extends upward from the upper surface of the main body 51. 52. In addition, a digital voltage display unit 53 is provided on the front surface of the main body 51 to indicate to the operator the voltage during power generation (power generation voltage) and the voltage of the stored power (power storage voltage). It has been.

  Next, the internal configuration of the power generator 5 will be described with reference to FIG. A large number of grooves are formed along the length direction on the lower side of the aforementioned leg portion 52, thereby forming a rack gear 52a. An elastic member 52b such as a spring is connected to the leg portion 52 that can move up and down in order to maintain and restore the upwardly extended state. FIG. 4 shows an example in which the elastic member 52b is provided below the leg portion 52 as an example, but the position of the elastic member 52b can be changed as appropriate. A gear (small gear) 54 meshes with the rack gear 52 a of the leg portion 52, and a gear (large gear) 55 having a large diameter is provided on a rotation shaft coaxial with the small gear 54. As an example, a ratchet is incorporated in a rotating shaft connecting the small gear 54 and the large gear 55, and when the small gear 54 is rotated in one direction (here, the leg portion 52 is pushed by the upper mold 3). The large gear 55 can be configured to rotate only when it is lowered). In the example of FIG. 4, the reduction gear is configured by the small gear 54 and the large gear 55, but of course, the number of gears and the reduction ratio can be changed as appropriate.

  A gear 56 a provided on the rotating shaft of the power generation motor 56 is engaged with the large gear 55 of the speed reducer. That is, the power (regenerative energy) is obtained by rotating the rotating shaft of the power generation motor 56. The specifications of the power generation motor 56 to be a generator are not particularly limited, and a commercially available motor can be used. Further, a storage battery 57 such as a rechargeable battery is electrically connected to the power generation motor 56, and the functional device 6 is electrically connected to the storage battery 57. Thereby, the generated electric power can be stored in the electric storage ground 57, and for example, the functional device 6 can be started even before the pressing process is started. Note that the power generation device 5 does not necessarily have to be disposed in the lower mold 4, may be disposed in the upper mold 3, or a plurality of power generation devices 5 may be disposed in both the upper mold 3 and the lower mold 4. You may arrange.

  The functional device 6 can also be arranged in the lower mold 4 in the same manner as the power generation device 5, but may be arranged in the upper mold 3, or a plurality of functional devices 6 may be arranged with the upper mold 3 and the lower mold 3. You may arrange | position to both the metal mold | dies 4. The installation location in the mold is not limited to the die holder 41, and can be appropriately adjusted according to the function. Furthermore, you may arrange | position in places other than a metal mold | die, for example, the slide 14 of the press machine 1, the bolster 12, or the other place of the press machine 1. As a preferable example of the functional device 6 related to such press working, an oil supply device that applies oil to a metal material to be pressed, a visualization device that includes an LED that visualizes the quality of a press, for example, production information IC tag and IT equipment, in-mold tap unit, in-mold transfer device, electric cylinder, in-mold camera, sensing device, punch to obtain coating effect A power supply device that supplies electricity to a metal, a power supply device that supplies electricity to a metal material to obtain a drawing effect, a power supply device that supplies electricity to a mold to obtain a rust prevention effect, and a storage device that stores information on production status And a heat retaining device for heating the mold. A plurality of these functional devices 6 may be employed.

  Next, operations of the mold 2, the power generation device 5, and the functional device 6 when performing press working will be described. First, the upper die 3 and the lower die 4 are respectively attached to the slide 14 and the bolster 12 of the press 1 so that the tip of the guide post 47 is in the state shown in FIG. In attaching the upper mold 3 and the lower mold 4, it is possible to save the trouble of performing electrical wiring as in the conventional case for the functional device 6. When the mounting operation of the mold 2 is completed, the metal material M, which is the material, is then placed at a predetermined position on the die plate 43, and after performing preparatory work such as oil application, a switch provided in the operation unit 15 Etc. are operated to lower the slide 14. As a result, as shown in FIG. 5, the upper die 3 is guided by the guide posts 47 and descends while securing a predetermined posture and position.

  As the upper die 3 descends, the stripper guide 37 penetrates into the guide bush 46. When the upper die 3 is further lowered, the stripper plate 35 is guided by the stripper guide 37 and descends while securing a predetermined posture and position, but comes into contact with the upper surface of the die plate 43 and stops. Further down, the metal material M is extracted in a circular shape by the cooperative action with the die 44. The extracted part falls through the central opening of the lower mold 4 and is collected as scrap.

  On the other hand, the operation of the power generation device 5 will be described. As the upper mold 3 descends, the tip of the leg portion 52 first comes into contact with the lower surface of the punch holder 31. Then, while the upper mold 3 is lowered until it engages with the lower mold 4, the leg portion 52 is pushed by the punch holder 31 and moves downward (enters into the main body). As a result, the gear group of the speed reducer rotates and the rotating shaft of the power generation motor 56 rotates to generate electric power (regenerative energy). The generated power is supplied to the functional device 6 through the storage battery 57, but surplus power is stored in the storage battery 57. The functional device 6 performs operations related to the press work that the functional device 6 has by being supplied with electric power. Since the press is repeatedly performed, it is possible to sufficiently store electric power in the storage battery 57, and the functional device 6 can be activated with the electric power before the press starts even when the mold 2 is used next time.

  When the metal material M is extracted in a circular shape, the slide 14 starts to rise, and as the upper die 3 moves away from the lower die 4, the leg portion 52 moves upward by the extension action of the elastic member 52b such as a spring. Do (extend from the main body). Since the ratchet is provided as described above, the reverse rotation of the rotating shaft of the motor does not occur when the leg portion 52 moves upward. Of course, instead of the ratchet, an element such as a diode may be provided in the circuit to rectify the electric power sent from the power generation motor 56.

  According to the above-described embodiment, the power generation device 5 that is driven by the up-and-down movement of the upper mold 3 during the press working and generates power is disposed in the mold, and the power from the power generation device 5 is supplied to the functional device 6. With this configuration, the electric power of the functional device 6 related to press working can be supplied from the mold 2 itself, so that the burden of electrical wiring connection work associated with mold replacement is reduced. Furthermore, since the burden of electrical wiring connection work is reduced, it is possible to newly add various functional devices 6 to increase the added value of the mold.

  Needless to say, such a mold 2 is applicable not only to the above-described small press 1 but also to a large press. Furthermore, since a wide variety of functional devices 6 can be adopted, a plurality of dies are attached to a common press machine in the order of processes, and progressive processing and transfer processing in which pressing is continuously performed while sequentially moving metal materials as materials are performed. The advantages of applying are great. Further, the same applies to transfer processing in which a plurality of press machines are arranged in tandem.

  Although the present invention has been described in detail with reference to specific embodiments, various substitutions, modifications, changes, etc. in form and detail are defined in the claims. It will be apparent to those skilled in the art that this can be done without departing from the spirit and scope.

DESCRIPTION OF SYMBOLS 1 Press machine 2 Mold 3 Upper mold 4 Lower mold 5 Power generation apparatus 6 Functional apparatus

Claims (3)

A mold that is attached to a press machine and presses a metal material into a desired shape,
An upper die attached to the slide of the press machine, a lower die attached to the bolster of the press machine, and an upper die and / or a lower die provided on the upper die and / or the lower die. And a power generation device that is driven by motion to generate electric power and to supply power to a functional device related to the press processing.   The power generation device includes: a rack gear that is moved up and down by the upper mold; a speed reducer that includes a gear group that is rotated by the rack gear; and a power generation motor that includes a rotation shaft that is rotated by the speed reducer. The die for press working according to claim 1, comprising:   Functional devices that operate with the electric power from the power generation device include oil supply devices that apply oil to the metal material to be pressed, visualization devices with LEDs that visualize press quality, IC tags, IT equipment, and molds Inner tap unit, in-mold transfer device, electric cylinder, built-in camera, sensing device, feeding device that supplies electricity to punch to obtain coating effect, feeding device that supplies electricity to metal material to obtain aperture effect The power supply device for supplying electricity to the mold in order to obtain a rust prevention effect, the storage device for storing information on the production status, and the heat retention device for heating the mold. A mold for press working according to 1 or 2.

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