JP2019042750A - Powder molding press device and powder molding press system - Google Patents

Abstract

To provide a powder molding press device which enables reduction of a height of the device, and provide a powder molding press system.SOLUTION: In one embodiment of the disclosure, a powder molding press device 1 has: a die set including an upper punch plate 13 to which an upper punch 21 is attached, a die plate 14 to which a die 22, into which the upper punch 21 can be inserted from the upper side to the lower side, is attached, the die plate 14 provided below the upper punch plate 13, and a first punch plate 15 to which a first punch 23, which can be inserted at the inner side of the die 22 from the lower side to the upper side, is attached, the first punch plate 15 provided below the die plate 14; and an extrusion rod 41 which moves down the die plate 14 so as to take out a molded item M in a cavity formed by the die 22 and the first punch 23. The die plate 14 includes a pressing part 61 which is pressed by a pressing part 71 of the extrusion rod 41 on an upper surface 51 of the die plate 14.SELECTED DRAWING: Figure 2

Description

  The present disclosure relates to a powder forming press apparatus and a powder forming press system for performing a powder forming press in which a metal powder or the like filled in a cavity is formed into a predetermined shape by pressing.

  As a prior art, Patent Document 1 discloses an apparatus for a powder forming press. In this apparatus, an upper punch plate, a die plate, a float plate, a base plate, and a lower ram are disposed in order from top to bottom. And in this apparatus, the push rod provided below the cam attached to the main shaft of the drive part is connected with the lower ram. Then, when the molded product is taken out of the cavity at the time of completion of pressurization, the push rod lowers the lower ram and the die plate connected to the lower ram is pulled down and lowered together with the lower ram.

JP-A-9-295196

  In the device disclosed in Patent Document 1, a lower ram is provided further below the base plate, the push rod is extended to a position where the lower ram is provided, and the push rod is connected to the lower ram . As a result, since the portion below the base plate is longer, the height from the bottom of the apparatus to the position where the die plate and the upper punch plate are provided is increased. Therefore, the worker may not be able to easily replace the upper punch attached to the die attached to the die plate or the upper punch plate. Then, when installing an apparatus which is disclosed by patent document 1 in a factory, the pit (hole for apparatus installation) previously formed by digging down rather than the floor surface in the factory floor is provided, and this pit is formed. It is necessary to insert the device inside to reduce the height of the device from the floor of the factory. Thus, when the height of the device is increased, there is a possibility that the device can not be easily installed, for example, it is necessary to provide a pit on the floor of the factory in advance when installing the device.

  Accordingly, the present disclosure is made to solve the above-described problems, and it is an object of the present disclosure to provide a powder molding press device and a powder molding press system capable of reducing the height of the device.

  An embodiment of the present disclosure made to solve the above problems is provided with an upper punch plate to which an upper punch is attached, and a die to which the upper punch can be inserted from the top to the bottom and attached below the upper punch plate. A die set comprising: a die plate; and a lower punch plate which is insertable from the bottom to the upper inside of the die and is provided below the die plate; and the die and the lower punch And an extrusion rod for lowering the die plate to take out a molded product in the cavity, the die plate including a pressing portion pressed by the extrusion rod on the upper surface of the die plate. It is characterized by

  According to this aspect, it is possible to take out the molded product from the inside of the cavity by pushing the die plate from the upper side by the push rod provided below the drive unit on the upper side of the powder forming press. Therefore, since it is not necessary to provide a lower ram or cylinder as in the apparatus of Patent Document 1 below the die plate, specifically, below the die set, the height of the die set can be reduced, and powder molding can be performed. The overall height of the press can be reduced. Therefore, since the position where the upper punch plate and the die plate are disposed can be lowered, the operator can easily replace the upper punch and the die. Therefore, it is not necessary to provide a pit on the floor of the factory as in the prior art, and the apparatus can be placed directly on the floor of the factory, so installation of the powder forming press becomes easy.

  In the above aspect, preferably, the pressing portion is formed in a columnar or cylindrical shape so as to protrude upward from the upper surface of the die plate.

  According to this aspect, it is possible to reduce the amount of movement of the push rod between the position where the push rod is retracted from the die set and the position where the tip of the push rod is in contact with the pressing portion of the die plate. Therefore, the push rod of the die plate can be pushed from the upper side by the push rod while reducing the moving amount of the push rod. In addition, since the extrusion rod can be immediately retracted to an unobtrusive upper position with respect to the die set, the die set can be immediately carried out of the powder forming press apparatus without the extrusion rod being in the way or the powder It can be carried into the forming press. Therefore, the workability of loading and unloading of the die set with respect to the powder molding press apparatus is improved.

  In the above aspect, it is preferable to have a cylinder attached to the lower surface of the die plate and supporting the die plate.

  According to this aspect, the die plate can be stably moved up and down by adjusting the pressing force by the push rod while supporting the die plate by the cylinder. Therefore, the die plate can be stably lowered. Therefore, the molded product can be stably removed from the cavity.

  Another embodiment of the present disclosure made to solve the above problems is provided with an upper punch plate to which an upper punch is attached, and a die to which the upper punch can be inserted from the top to the bottom and attached to the lower side of the upper punch plate. A die set including: a die plate to be inserted; a lower punch plate that can be inserted from the bottom to the top inside the die and a lower punch plate provided below the die plate; formed by the die and the lower punch And an extrusion rod for lowering the die plate to take out a molded product in a cavity, the powder forming press system having a powder molding press device, the die plate being placed on the upper surface of the die plate. The die set is carried into the powder forming press and the powder forming Conveying unit for conveying the scan device out is the relative powder molding press apparatus, that are provided on both sides or one side position in the arrangement direction of the pair provided the push rod is characterized by.

  According to this aspect, it is possible to take out the molded product from the inside of the cavity by pushing the die plate from the upper side by the push rod provided below the drive unit on the upper side of the powder forming press. Therefore, since it is not necessary to provide a lower ram or cylinder as in the apparatus of Patent Document 1 below the die plate, specifically, below the die set, the height of the die set can be reduced, and powder molding can be performed. The overall height of the press can be reduced.

  Also, unlike the extrusion rod of the device disclosed in Patent Document 1, the die set is carried out and carried into the device by the transport conveyor because the arrangement direction of the pair of extrusion rods is not blocked by the extrusion rod. it can. Thus, the die set can be carried out and carried in with respect to the powder forming press device in the left-right direction when the powder forming press device is viewed from the front. Therefore, when carrying out and carrying in a die set with respect to a powder-forming press apparatus, it is not necessary to carry out a die set once backward with respect to a powder-forming press apparatus, for example, for example, carrying in from a back. Therefore, the unloading time or loading time of the die set can be shortened.

  With the powder forming press apparatus and the powder forming press system of the present disclosure, the height of the apparatus can be reduced.

It is a figure showing a powder compacting press system which has a powder compacting press device of this embodiment. In the powder compacting press of this embodiment, it is a figure showing a die set and an extrusion rod mainly. It is a figure when it sees from the upper surface of a die plate. FIG. 6 is an operation diagram of a cam, an upper punch, a die and a first punch.

  Embodiments of the powder forming press apparatus and the powder forming press system of the present disclosure will be described in detail with reference to the drawings.

  As shown in FIGS. 1 to 3, the powder forming press device 1 of the present embodiment includes the drive unit 11, the upper ram 12, the upper punch plate 13, the die plate 14, and the first punch plate 15 (“the lower Punch plate ”, fixed plate 16, upper punch 21, die 22, first punch 23 (an example of“ lower punch ”), core rod 24, die filling cylinder 31, and first cylinder 32 And an extrusion rod 41 and the like.

  The drive unit 11 includes a main shaft, an electric motor, a crank mechanism, a cam, and the like, though not shown. The motor is a drive mechanism for rotating the main shaft. The crank mechanism is a mechanism operated by the rotation of the main shaft. Two cams are provided and provided on the left and right of the crank mechanism so as to be fixed to the main shaft. The drive unit 11 is a mechanism unit that drives the upper ram 12 and the push rod 41.

  The upper ram 12 is connected at its upper end to the crank mechanism of the drive unit 11. The upper ram 12 is attached at its lower end to the upper punch 21 via the upper punch plate 13 and the like. The die plate 14, the first punch plate 15, and the fixing plate 16 are provided in the above order from the top to the bottom below the upper punch 21 attached to the upper punch plate 13.

  The die plate 14 is provided below the upper punch plate 13. The die plate 14 is attached with a die 22 (see FIG. 2) into which the upper punch 21 is inserted from the top to the bottom. Further, the die plate 14 is supported by a die filling cylinder 31 attached to the lower surface 52 of the die plate 14.

  In the present embodiment, the die plate 14 is provided with a pressing portion 61 pressed by the push rod 41 on the upper surface 51 thereof. The pressing portion 61 is formed in a columnar or cylindrical shape so as to protrude upward from the upper surface 51 of the die plate 14. In the present embodiment, the pressing portions 61 are provided in a pair (two) so as to correspond to the push rod 41. Such a die plate 14 can be moved up and down by adjusting the pressing force received from the push rod 41 by the pressing portion 61 while being supported by the die filling cylinder 31.

  The first punch plate 15 is provided below the die plate 14. The first punch plate 15 is attached with a first punch 23 inserted from the bottom to the top inside the die 22, and can be moved up and down by the first cylinder 32.

  The push rod 41 is provided on the lower side of the cam of the drive unit 11 so as to be vertically movable in the axial direction. The push rod 41 is provided with a roller (not shown) that receives the pressure of the cam. The roller is rotatably attached to the upper end of the push rod 41. In the present embodiment, the push rod 41 is provided with a pressing portion 71 for pressing the pressing portion 61 of the die plate 14. The push rod 41 lowers the die plate 14 in order to take out the molded product M in the cavity formed by the die 22, the first punch 23 and the core rod 24 as described later. In the present embodiment, the push rods 41 are provided in a pair (two). The core rod 24 is attached to the lowermost portion of the powder forming press 1 and is inserted from the bottom to the top inside the first punch 23.

  The powder molding press 1 having the above-described configuration works as follows. First, when the main shaft of the drive unit 11 rotates, the upper punch 21 operates by the action of the crank mechanism of the drive unit 11, and the push rod 41 operates by the action of the cam of the drive unit 11.

  That is, as shown in FIG. 4, first, the first punch plate 15 is disposed at the highest position when the rotation angle θ of the main shaft at which the upper punch 21 is raised to the highest position is 0 °. And the die plate 14 is rising. Thereafter, after the upper punch 21 starts to descend from the top dead center position, the raising of the die plate 14 is completed when the rotation angle θ of the main shaft becomes 15 degrees. At this time, powder is supplied and filled in the cavity formed by the die 22, the first punch 23 and the core rod 24. Thereafter, the upper punch 21 continues to descend, but the die plate 14 and the first punch plate 15 are stopped in such a manner as to maintain the elevated position.

  Thereafter, as time passes, the upper punch 21 is further lowered, and when the rotation angle θ of the main shaft becomes 128 degrees, the upper punch 21 is inserted into the cavity inside the die 22 and pre-pressing is performed to press the powder. It is started. Thereafter, when the rotation angle θ of the main shaft becomes 135 degrees, the die plate 14 starts to descend by a mechanism (not shown) different from the push rod 41, and the die 22 mounted on the die plate 14 also starts to descend. Do. The core rod 24 also starts to descend together.

  Thereafter, when the rotation angle θ of the main shaft becomes 140 degrees, the first punch plate 15 and the first punch 23 start to descend due to the force of the upper punch 21 acting through the powder. Then, the die plate 14 and the first punch plate 15 are lowered together with the upper punch 21. Thereafter, when the rotation angle θ of the main shaft reaches about 165 degrees, the first punch plate 15 stops its lowering. Thereafter, when the rotation angle θ of the main shaft reaches 180 degrees, the die plate 14 stops its lowering, and the upper punch 21 reaches the bottom dead center to complete the pressurization. Thereafter, the upper punch 21 starts to rise above the bottom dead center, but the die plate 14 and the first punch plate 15 do not rise yet.

  Thereafter, when the rotation angle θ of the main shaft reaches 195 degrees, the cam of the drive unit 11 starts to descend, and the push rod 41 starts to descend. After that, when the rotation angle θ of the main shaft reaches 218 degrees, the die plate 14 starts to descend. At this time, in the present embodiment, when the pressing portion 71 of the push rod 41 presses the pressing portion 61 of the die plate 14, the die plate 14 is lowered.

  Thereafter, when the rotation angle θ of the main shaft becomes 240 degrees, the first punch plate 15 also starts to descend. Then, as the die plate 14 and the first punch plate 15 descend in this manner, the molded product M is taken out of the cavity.

  Then, the above extrusion state continues while the rotation angle θ of the main shaft is about 260 to 290 degrees, and when the rotation angle θ of the main shaft exceeds about 290 degrees, the die plate 14 and the first punch plate 15 start to ascend Do. Thereafter, the above cycle is repeated.

  Note that FIG. 4 only shows an example of the operation timing of the upper punch 21, the die 22, the first punch 23, etc., and is variously changed according to the shape of the molded product M, the type of powder, etc. .

  In addition to the crank press that drives the ram by the crank mechanism as described above, the present disclosure also drives the ram by the eccentric press that drives the ram by the eccentric mechanism, the knuckle press that drives the ram by the toggle joint, and the cam mechanism. It can be applied to a cam press and the like.

  As described above, in the present embodiment, the die plate 14 includes the pressing portion 61 which is pressed by the pressing portion 71 of the push rod 41 on the upper surface 51 of the die plate 14.

  Thereby, in the present embodiment, when the push rod 41 provided below the drive unit 11 located on the upper side of the powder molding press 1 presses the die plate 14 from the upper side, the molded article M is taken out from the cavity. it can. As described above, when the molded product is taken out of the cavity as in the device of Patent Document 1, the pressing rod does not push the lower ram to pull down the die plate connected to the lower ram. Therefore, since it is not necessary to provide a lower ram or a cylinder as in the apparatus of Patent Document 1 below the die plate 14, specifically, below the fixed plate 16 in the die set, the height of the die set is It can be made smaller and the overall height of the powder molding press 1 can be reduced. Therefore, since the position where the upper punch plate 13 and the die plate 14 are disposed can be lowered, the operator can easily replace the upper punch 21 and the die 22 or the like. Therefore, it is not necessary to provide a pit on the floor of the factory as in the prior art, and the apparatus can be placed directly on the floor of the factory or the like, so the installation of the powder molding press 1 becomes easy. In addition, since the position of the operation panel 81 of the powder forming press 1 can also be lowered, the workability is improved.

  Further, the push rod 41 and the die plate 14 may be disposed sequentially from the drive unit 11 downward, and there is no need to connect the push rod to the die plate via the lower ram as in the device of Patent Document 1, so The number of parts needed to lower the plate 14 can be reduced.

  Further, in the present embodiment, the pressing portion 61 is formed in a columnar or cylindrical shape so as to protrude upward from the upper surface 51 of the die plate 14. Thus, the amount of movement of the push rod 41 between the position where the push rod 41 is retracted from the die set and the position where the tip of the pressing portion 71 of the push rod 41 is brought into contact with the pressing portion 61 of the die plate 14 can be reduced. . Therefore, the pressing portion 61 of the die plate 14 can be pushed from the upper side by the pressing portion 71 of the pushing rod 41 while reducing the moving amount of the pushing rod 41. In addition, since the push rod 41 can be immediately retracted to an upper position not disturbing the die set, the die set can be immediately moved out of the powder forming press 1 without the push rod 41 being in the way. It can be carried out or carried into the powder forming press 1. Therefore, the workability of loading and unloading of the die set with respect to the powder molding press 1 is improved.

  Further, in the present embodiment, the die filling cylinder 31 attached to the lower surface 52 of the die plate 14 and supporting the die plate 14 is provided. Thus, the die plate 14 can be stably moved up and down by adjusting the pressing force by the push rod 41 while supporting the die plate 14 by the die filling cylinder 31. Therefore, the die plate 14 can be lowered stably. Therefore, the molded product M can be stably removed from the cavity.

  Further, in the present embodiment, as shown in FIG. 1, in the powder forming press system 10 having such a powder forming press 1, the transport conveyors 91 are provided in a pair with respect to the powder forming press 1. The rods 41 are provided at positions on both sides in the arrangement direction. That is, the position in the left-right direction when the powder forming press 1 is viewed from the front side (the surface facing the powder forming press 1 when the operator replaces the upper punch 21 or the die 22, the operation surface of the operation panel 81) , A conveyer 91 is provided. The conveyer 91 is a conveyer for carrying the die set into the powder forming press 1 and carrying the die set out of the powder forming press 1.

  As described above, in this embodiment, unlike the push rod of the device disclosed in Patent Document 1, the push rod 41 is not blocked by the push rod 41 in the arrangement direction of the push rods 41 provided. The die set can be unloaded and loaded into the device. Thus, the die set can be carried out and carried in the powder forming press 1 in the left-right direction when the powder forming press 1 is viewed from the front. Therefore, when carrying out and carrying in a die set with respect to the powder shaping press apparatus 1, it is not necessary to once carry out a die set backwards with respect to the powder shaping press apparatus 1, for example, or carry in from a back direction. Therefore, the unloading time or loading time of the die set can be shortened. In addition, the position of the conveyance conveyor 91 is any one side of the arrangement direction (the left-right direction when the powder forming press 1 is viewed from the front side) of the extrusion rods 41 provided as a pair with respect to the powder forming press It may be provided only in

  The embodiment described above is merely an example, and does not limit the present disclosure in any way, and it goes without saying that various improvements and modifications can be made without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 1 powder forming press device 10 powder forming press system 11 driving unit 12 upper ram 13 upper punch plate 14 die plate 15 first punch plate 16 fixing plate 21 upper punch 22 die 23 first punch 24 core rod 31 die filling cylinder 32 first cylinder 41 Push-out rod 51 Upper surface 52 Lower surface 61 Pressing portion 71 Pressing portion 81 Operation panel 91 Conveying conveyor θ Main axis rotation angle M Molded article

Claims (4)

The upper punch plate to which the upper punch is attached, the die plate to which the upper punch can be inserted from the top to the bottom, and the die plate provided below the upper punch plate A lower punch plate attached to the lower plate and provided below the die plate;
An extrusion rod for lowering the die plate to take out a molded product in a cavity formed by the die and the lower punch;
In a powder forming press apparatus having
The die plate is provided with a pressing portion that is pressed by the push rod on the upper surface of the die plate.
Powder molding press machine characterized by In the powder forming press apparatus of claim 1,
The pressing portion is formed in a columnar or cylindrical shape so as to protrude upward from the upper surface of the die plate.
Powder molding press machine characterized by The powder molding press according to claim 1 or 2
Having a cylinder attached to the lower surface of the die plate to support the die plate;
Powder molding press machine characterized by The upper punch plate to which the upper punch is attached, the die plate to which the upper punch can be inserted from the top to the bottom, and the die plate provided below the upper punch plate A lower punch plate attached to the lower plate and provided below the die plate;
An extrusion rod for lowering the die plate to take out a molded product in a cavity formed by the die and the lower punch;
A powder forming press system having a powder forming press apparatus comprising:
The die plate is provided with a pressing portion on the top surface of the die plate that is pressed by the push rod.
Conveying units for carrying the die set into the powder forming press and carrying the die set out of the powder forming press are both sides of the arrangement direction of the extrusion rods provided in a pair with respect to the powder forming press. Being provided at one side,
Powder molding press system characterized by