JP4682550B2 - Powder molding method and powder molding apparatus - Google Patents

Description

The present invention relates to a powder forming method and a powder forming apparatus used in the field of manufacturing a ferrite element for a noise filter, for example, and more particularly to taking out a formed body when compression-formed by a die and upper and lower punches.

As a conventional powder molding apparatus, for example, as described in FIG. 8 of Patent Document 1, raw material powder is supplied through a shoe box 12 into a cavity formed by a die 3, a lower punch 5, and a core rod 4. Then, the upper punch 6 is lowered and compression molded, and then the molded body 8 is pushed upward by the lower punch 5 and the molded body 8 is moved to the die 3 as the shoe box 12 advances to supply the next raw material powder. There is something to be paid out to the side.
Japanese Patent Laid-Open No. 6-210496

Since the conventional powder molding apparatus is configured to dispense the molded body 8 by the shoe box 12, the following problems occur.

(1) When the shoe box 12 hits the molded body 8, there is an impact, and in the case of a molded body for small complex shaped parts with low strength, quality defects such as cracks and chips are likely to occur.

(2) When multi-piece molding is performed, there is a risk that cracks and chips may occur when the molded body moves on the upper surface of the die and is caught by other molding holes. Restrictions occur and the number of moldings decreases.

(3) When operated continuously for a long time, the raw material powder is clogged in the gap between the lower punch and the die, the mold slips heavily, and uneven wear of the inner diameter of the die and damage to the lower punch occur. In order to avoid this, a complicated operation of periodically cleaning the side surface of the punch tip to remove the sticking raw material is necessary, which hinders automatic continuous operation.

The present invention has been made in view of the above-described conventional situation, and provides a powder molding method and a powder molding apparatus capable of preventing impact on a molded body and preventing quality defects related to cracking, chipping, etc. of the molded body. The issue is to provide.

According to the first aspect of the present invention , a powder is filled in a space formed by a fixed die and a lower punch inserted from the lower end opening of the die, and the powder is inserted from the upper end opening of the die. In a powder molding method in which compression molding is performed with a punch, and after the compression molding, the lower punch is moved downward to be pulled downward from the lower end opening of the die, and the upper punch is further moved downward to discharge the molded body downward. An upper plate having an accommodation holding hole for accommodating the molded body discharged from the die, and a molded body holding for holding the molded body as the bottom of the accommodation holding hole when the molded body is discharged from the die. A take-out member having a lower plate disposed so as to be tiltable between a position and a molded product unloading position that is inclined to open the bottom when the molded product is carried out of the apparatus. The above die The take-out member is inserted between the lower end opening and the lower punch pulled out in the state where the lower plate is positioned at the molding holding position, and the upper punch is moved downward to accommodate the molded body. The molded body is discharged out of the apparatus by discharging into the holding hole and then tilting the lower plate to the molded body unloading position .

The invention according to claim 2 is a powder molding apparatus in which a powder formed in a space formed by a die and a lower punch is filled, and the powder is compression-molded by an upper punch. The lower punch and the upper punch can be moved relative to each other so as to be positioned at a required interval, and the upper punch and the die can be moved relative to each other so that the molded product is discharged below the die. A take-out member for taking out the molded body to the outside of the apparatus is provided, and the take-out member has an upper plate having an accommodation holding hole for housing the molded body discharged from the die, and when the molded body is discharged from the die. The molded body holding position for holding the molded body serving as the bottom of the housing holding hole, and the molded body unloading position for inclining and opening the bottom when the molded body is carried out of the apparatus. Can tilt between It is characterized in that it comprises a lower plate disposed.

According to the present invention, after compression molding, disconnect the lower punch from the lower end opening of the die downward, since so as to discharge the molded body to die down by the upper punch moves, shoebox Does not hit the molded body, and it is possible to prevent the occurrence of poor quality such as cracking and chipping of the molded body, and there is no restriction on the layout of the molding holes, and there is no problem of reduction in the number of moldings.

Furthermore, since the lower punch is pulled out below the die, the raw material powder biting into the gap between the lower punch and the die is naturally swept out each time. This self-cleaning effect can suppress sticking of the raw material powder to the punch, can eliminate the troublesome work of removing the sticking raw material, and can easily realize automatic continuous operation.

Further, after the lower punch is pulled out from the lower end opening of the die, the takeout member is inserted below the lower end opening of the die, and then the upper punch is moved downward to discharge the formed body onto the takeout member. Therefore, the molded body can be carried out of the apparatus with a simple structure.

In the inventions of claims 1 and 2 , when the molded body is discharged from the die, the molded body is housed in the housing and holding hole of the upper plate, and is held by the lower plate serving as the bottom of the housing and holding hole. When the takeout member is moved forward and backward to the lower end opening of the die, the molded body is not shaken down, and the speed of the takeout member can be increased.

Further, when the molded body is carried out of the apparatus, the lower plate is inclined to open the bottom, so that the molded body is carried out by sliding on the inclined surface of the lower plate from the accommodation holding hole of the upper plate. It will be. As a result, it can be carried out of the apparatus without applying mechanical external force to the molded body, and it is possible to prevent the occurrence of chipping or cracking during removal.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 and 2 are diagrams for explaining a powder molding method and a powder molding apparatus according to a first embodiment of the present invention, FIG. 1 is a schematic front view of the powder molding apparatus, and FIG. 2 shows a powder molding process. It is a schematic diagram. The first embodiment is an example of a so-called die fixing method in which a die is fixed and upper and lower punches are movable.

In the figure, reference numeral 1 denotes a powder molding apparatus for carrying out the powder molding method of the present embodiment. The powder molding apparatus 1 includes a molding die composed of dies 2, upper and lower punches 3 and 4, and upper and lower punches. A drive mechanism 6 that drives 3 and 4 and a take-out mechanism 16 that takes out the molded product W to the outside of the apparatus 1 are provided.

The die 2 is formed so as to form a horizontal plane, and has a molding hole 2c formed so as to penetrate between the lower surfaces 2a and 2b in the vertical direction, and is fixedly supported at a predetermined height position by the die table 7. ing. The upper and lower surfaces 2a and 2b of the die 2 and the upper and lower surfaces 7a and 7b of the die table 7 are formed so as to be flush with each other and a horizontal plane. The dice table 7 is fixedly supported by a support frame 9 via support columns 8 and 8.

The drive mechanism 6 has the following configuration. The upper punch 3 is fixed to an upper ram 10 having a support plate 10a and left and right guide rods 10b and 10b. The left and right guide rods 10b are inserted into the support columns 8 and 8 so as to be vertically movable. Has been. The lower punch 4 is fixedly supported by a rod-shaped lower ram 11, and the lower ram 11 is supported by the support frame 9 so as to be vertically movable.

Screw rods 12a and 12a are screwed into lower end portions of the guide rods 10b and 10b of the upper ram 10, and the screw rod 12a is supported by the support frame 9 so as to be rotatable and not vertically movable. The drive pulley 12b mounted on the lower end of the screw rod 12a is connected to the drive pulley 13a of the drive motor 13 by a belt 12c. As a result, the upper punch 3 can move the formed body W downward from the lower end opening of the die 2 to a dischargeable position.

A screw rod 14a is screwed into the lower end portion of the lower ram 11, and the screw rod 14a is supported by the support frame 9 so as to be rotatable and not movable in the axial direction. The driving pulley 14b attached to the lower end of the screw rod 14a is connected to the driving pulley 15a of the driving motor 15 by a belt 14c. As a result, the lower punch 4 can be moved downward to a position where a required interval is opened below the die 2.

The take-out mechanism 16 is configured such that the take-out member (tray) 17 can be moved back and forth between a molded body receiving position A below the lower end opening of the die 2 and an outer molded body unloading position B. Specifically, the take-out member 17 has a receiving plate 17b at the tip of a rectangular frame-shaped main body 17a, and is supported by a plurality of guide rollers 18 so as to be able to advance and retract between the receiving position A and the unloading position B. . The drive piece 17c extending outward from the main body 17a is sandwiched between rollers 19a and 19a that are rotationally driven by a drive motor 19, and the take-out member 17 advances and retreats by the rotation of the roller 19a. The take-out member 17 is a reference example outside the present invention, and in the present invention, the take-out member 20 shown in FIGS. 5A and 5B is employed instead of the take-out member 17.

The powder molding process by the powder molding apparatus 1 will be described with reference to FIG.

The lower punch 4 is lowered with respect to the die 2 to a preset target position, the raw material powder is supplied into the volume space (cavity) formed by the die 2 and the lower punch 4, and the upper surface 2a of the die 2 is flattened. The raw material powder having a required weight is filled by grinding (FIG. 2A). The raw material powder is filled in the volume space by moving the shaker 20 onto the die 2 and then lowering the lower punch 4 to form the volume space, and after forming the volume space, There is a method of feeding powder.

Next, the upper punch 3 is lowered until it comes into contact with the filled raw material powder, and then the upper and lower punches 3 and 4 are moved up and down to an arbitrary height position in the die 2 while maintaining their relative positional relationship. Translate in the direction. Subsequently, the raw material powder in the die 2 is pressed by the upper and lower punches 3 and 4 and compressed to a target molded body thickness (FIG. 2B).

After the pressurization is completed, the pressure is reduced by slightly retracting the punch in the direction opposite to the pressurization so far that the formed body W and the punches 3 and 4 are not separated from each other. By this operation, the stress inside the molded body is relaxed, and cracking of the molded body is prevented in preparation for demolding. While maintaining the relative positional relationship between the upper and lower punches 3 and 4 after decompression, the molded product W is translated in the downward direction while being sandwiched between the upper and lower punches 3 and 4, and a part of the molded product W is dies. 2 Extrude until protruding from the lower surface (FIG. 2 (c)).

When a part of the molded body W is pushed out from the lower surface of the die 2, the movement of the upper punch 3 is temporarily stopped and only the lower punch 4 is lowered. In this knockout state, the lower punch 4 is extracted from the die 2 while preventing the molded body W from dropping, and a sufficient gap a is formed between the molded body W and the upper surface of the lower punch 4 (FIG. 2D). .

The takeout member 17 is made to enter the gap a between the lower surface of the molded body W and the upper surface of the lower punch 4 (FIG. 2 (e)). After the take-out member 17 is inserted to a position immediately below the molded body W, the upper punch 3 is moved downward to the final lowering position again to release the molded body W from the lower surface side of the die 2 and transferred onto the take-out member 17. (FIG. 2 (f)).

The take-out member 17 on which the molded body W is placed is pulled out of the apparatus to collect the molded body W, and the upper punch 3 is moved upward and extracted from the die 2 (FIG. 2 (g)). Further, the lower punch 4 is inserted again into the die 2 and moved up until the die upper surface and the lower punch upper surface are flush with each other. Thereafter, the same operation is repeated from the filling of the raw material powder to obtain a molded body continuously.

According to this embodiment, since the molded body W is discharged below the die 2, the shoe box does not hit the molded body, and it is possible to prevent the occurrence of quality defects such as cracking and chipping of the molded body W, Further, there is no restriction on the layout of the molding holes, and there is no problem of reduction in the number of moldings.

Further, since the lower punch 4 is pulled out below the die 2, the raw material powder biting into the gap between the lower punch 4 and the die 2 is naturally swept out each time. Due to this self-cleaning effect, sticking of the raw material powder to the punch 4 can be suppressed, a complicated operation of removing the sticking raw material can be eliminated, and automatic continuous operation can be easily realized.

After the compression molding, the upper punch 3 and the lower punch 4 are moved downward until a part of the molded body W protrudes from the lower end opening of the die 2 while maintaining the relative positional relationship between the two, and then the molded body W is moved. Is discharged downward, the stress in the vertical direction generated in the compact W after compression can be released in the horizontal direction, and even if only the lower punch 4 is lowered thereafter, the lower surface of the compact is By preventing the expansion, the stress applied to the peripheral edge of the lower surface can be suppressed as a result, and cracks and chipping due to the progress can be prevented from occurring on the peripheral surface of the lower surface.

Here, in the case of a flat molded body having no unevenness on the pressing surface, even if only the lower punch 4 is extracted from the die 2 in advance after the molding is completed, there is no significant problem in quality. However, in the case of taking out a molded body having a complicated shape, the process of extracting a part from the mold in a state of being sandwiched by the upper and lower punches 3 and 4 after releasing the internal stress, removes the molded body W without partial defect. It is necessary for the above.

More specifically, the compact W after compression is in a state having stress toward the upper and lower surfaces. When the compression pressure is high, this stress increases. Therefore, when the lower punch 4 is released in the die 2, the upper surface of the molded body W is in contact with the upper punch 3 and the side surface is in contact with the die 2. Only become open. At this time, since only the lower surface of the molded body W expands, stress concentrates on the periphery of the lower surface, and there is a possibility that a crack or a chipping due to its progress may occur. Therefore, in this embodiment, the stress is relieved by reducing the distance between the upper and lower punches 3 and 4 slightly after being compressed, and the relative positional relationship between the upper and lower punches 3 and 4 is maintained. However, since a part of the molded body W protrudes from the lower surface of the die 2 to release the stress in the vertical direction in the horizontal direction, the lower surface does not expand even if only the lower punch 4 is subsequently lowered. In addition, it is possible to prevent cracks and chipping due to the progress of the cracks from occurring on the periphery of the lower surface.

Furthermore, after the lower punch 4 is pulled out from the lower end opening of the die 2, the takeout member 17 is inserted below the lower end opening of the die 2, and then the upper punch 3 is moved downward to remove the molded body W from the takeout member. Since it is made to discharge | emit on 17, the molded object W can be carried out to apparatus outward with a simple structure.

3 and 4 are diagrams for explaining a second embodiment of the present invention. The same reference numerals as those in FIGS. 1 and 2 denote the same or corresponding parts. The second embodiment is an example of a so-called die float method in which the lower punch 4 is fixed and the die 2 and the upper punch 3 are movable.

In the powder forming step in the second embodiment, the raw material powder is supplied into the volume space (cavity) formed by the die 2 and the lower punch 4 by raising the die 2 to a preset target position. The upper surface 2a of 2 is rubbed flat to fill the raw material powder with a required weight (FIGS. 3A and 3B).

Next, the upper punch 3 is lowered until it comes into contact with the charged raw material powder (FIG. 3C), and then the die 2 is moved to an arbitrary height while maintaining the relative positional relationship between the upper and lower punches 3 and 4. The position is raised (FIG. 3 (d)). Subsequently, the raw material powder in the die 2 is pressurized by the upper punch 3 and compressed to a target molded body thickness (FIG. 3 (e)).

After the pressurization is completed, the pressure is reduced by slightly retracting the punch in the direction opposite to the pressurization so far that the formed body W and the punches 3 and 4 are not separated from each other. By this operation, the stress inside the molded body is relaxed, and cracking of the molded body is prevented in preparation for demolding. The relative positional relationship between the upper and lower punches 3 and 4 after decompression is maintained, the die 2 is raised while the molded product W is sandwiched between the upper and lower punches 3 and 4, and a part of the molded product W is moved to the die 2. It protrudes from the lower surface (FIG. 4A).

When a part of the molded body W protrudes from the lower surface of the die 2, the upper punch 3 and the die 2 are raised. As a result, a sufficient gap a is formed between the molded body W and the upper surface of the lower punch 4, and the take-out member (tray) 17 enters the gap a between the lower surface of the molded body W and the upper surface of the lower punch 4 (FIG. 4 (b)). After the take-out member 17 is inserted to a position directly below the molded body W, the die 2 is raised again, the molded body W is removed from the lower surface side of the die 2, and transferred onto the take-out member 17 (FIG. 4C). .

The take-out member 17 on which the molded body W is placed is pulled out of the apparatus, the molded body W is recovered, and the die 2 is returned to the origin (FIGS. 4D and 4E).

In the second embodiment, similarly to the first embodiment, problems such as generation of defective products and a decrease in the number of molded products can be prevented, automatic continuous operation can be easily realized, and cracks and The effect of preventing the occurrence of chipping is obtained.

In the second embodiment, the upper punch 3 is driven only in the pressurizing step and the tray entering step. However, the upper punch 3 may be driven in other steps such as a molded body ejecting step. Alternatively, in the opening process or the like, the die fixing method and the die float method may be combined such that both the upper and lower punches 3 and 4 are driven.

FIGS. 5A and 5B are views for explaining a third embodiment of the present invention. The same reference numerals as those in FIGS. 1 and 2 denote the same or corresponding parts.

The take-out member 20 of the third embodiment is employed in place of the take-out member 17 in the take-out mechanism 16 shown in FIG. 1, and contains a plurality of housings that house the molded body W discharged from a die ( not shown). An upper plate 21 having a holding hole 21a, a molded body holding position A for holding the molded body W as a bottom portion of the accommodation holding hole 21a when the molded body W is discharged from the die, and the molded body W And a lower plate 22 that is disposed so as to be tiltable between the molded body unloading position B that is inclined to open the bottom of the housing and holding hole 21a.

The accommodation holding holes 21a of the upper plate 21 are formed so as to accommodate the molded bodies W one by one in accordance with the layout of the dies. The lower plate 22 is in contact with the lower surface of the upper plate 21 at the molded body holding position A and closes the lower surface opening of the housing holding hole 21a. The lower surface opening of the holding hole 21a is opened.

The upper plate 21 and the lower plate 22 are respectively provided with gears 23 and 24 for adjusting the opening (lowering) speed of the lower plate 22.

The lower plate 22 is held at the molded body receiving position A by the ball plunger 25, and the holding at the molded body receiving position A is released by the holding release shaft 26.

A cam follower 27 is disposed on the lower surface of the lower plate 22 so as to tilt the lower plate 22 to the molded product unloading position B. Further, a recovery linear feeder 28 that recovers the molded body W that has been transported by sliding on the slope of the lower plate 22 is disposed at the molded body unloading position B.

According to the third embodiment, when the molded body W is ejected from the die, the upper plate 21 having the accommodation holding holes 21a for accommodating the molded bodies W one by one, and the accommodation holding holes. Since the lower plate 22 is configured as a bottom portion of the housing 21a and closes the lower end opening of the holding and holding hole 21a, the molded body W is shaken off when the takeout member 20 is moved forward and backward to the lower end opening of the die. In other words, the speed of the take-out member 20 can be increased.

Further, when the molded body W is carried out of the apparatus, the lower plate 22 is inclined to open the bottom portion, that is, the lower end opening of the accommodation holding hole 21a. From the hole 21a, it slides on the inclined surface of the lower plate 22, and is carried out. As a result, it can be carried out of the apparatus without applying mechanical external force to the molded body W, and it is possible to prevent the occurrence of chipping or cracking during removal.

6 to 8 are views for explaining a powder molding apparatus according to a reference example other than the present invention , in which the same reference numerals as those in FIGS. 1 and 2 denote the same or corresponding parts.

This reference example powder molding apparatus is arranged on a molding die composed of dies 2, upper and lower punches 3, 4 disposed on one end side in the longitudinal direction of the base plate 30 and an upper surface on the other end side of the base plate 30. A powder supply mechanism 31 is provided, and a take-out mechanism 32 is provided on the lower surface. In addition, 33 is an upper punch support plate, 34 is a lower ram, and 48 is a support frame.

The powder supply mechanism 31 includes a powder supply member (feeder) 35 slidably disposed on the upper surface of the base plate 30, an upper cam 36, and an upper link 37 that connects the powder supply member 35 and the upper cam 36. have. The powder supply member 35 is supported so as to be able to advance and retreat between a powder supply position located at the upper end opening of the upper surface 2a of the die 2 and a standby position behind the powder supply position. The raw material powder is loaded into the powder supply member 35 at this standby position.

The take-out mechanism 32 has a take-out member (tray) 38, a lower cam 39, and a lower link 40 that connects the take-out member 38 and the lower cam. Yes. The take-out member 38 is supported so as to be able to advance and retreat between a molded body receiving position located below the lower end opening of the lower surface 2b of the die 2 and a carry-out position outside the apparatus.

And the said powder supply member 35 and the taking-out member 38 are comprised so that it may advance / retreat with the same drive source, and this drive source has the following structures.

A single servo motor 41 is mounted on the upper surface of the other end of the base plate 30, and a rotating shaft 41 a of the servo motor 41 is inserted through the base plate 30 and protrudes downward. The servo motor 41 is controlled to rotate in either the forward (counterclockwise) direction a or the reverse (clockwise) direction b by a drive control unit (not shown) and controlled to a predetermined rotation angle.

A drive shaft 42 is disposed on the base plate 30 in parallel with the rotation shaft 41 a, and the drive shaft 42 protrudes from the upper and lower surfaces of the base plate 30. A driving pulley 43 and a driven pulley 44 are mounted on the rotating shaft 41 a and the driving shaft 42, respectively, and both pulleys 43 and 44 are connected by a timing belt 45.

The upper cam 36 is connected to the upper end portion of the drive shaft 42 with an upper one-way clutch 46 interposed therebetween. The lower cam 39 is connected to the lower end of the drive shaft 42 with a lower one-way clutch 47 interposed.

The upper one-way clutch 46 is configured to transmit only the rotation of the drive shaft 42 in the forward rotation direction a to the upper cam 36 and to idle with respect to the rotation in the reverse rotation direction b. The lower one-way clutch 47 is configured to transmit only the rotation of the drive shaft 42 in the reverse rotation direction b to the lower cam 39, and to idle with respect to the rotation in the forward rotation direction a.

The powder molding process using the reference apparatus will be described with reference to FIGS. 8A, 8A, 8B, 8B.

When the servo motor 41 rotates in the forward direction a, the drive shaft 42 rotates in the forward direction via the timing belt 45, the upper one-way clutch 46 engages with the upper cam 36 and rotates the upper cam 36 by 180 degrees, Along with this, the powder supply member 35 moves forward to the powder supply position (see FIG. 8A). At the powder supply position, the raw material powder is filled into the space formed by the die 2 and the lower punch 4 from the powder supply member 35. In this case, the lower one-way clutch 47 is idling and the takeout member 38 is stopped.

The drive shaft 42 is further rotated in the forward rotation direction a by the servo motor 41, the upper cam 36 is rotated 180 degrees via the upper one-way clutch 46, and the powder supply member 35 is retracted to the standby position accordingly (FIG. 8 (a ′)). Also in this case, the lower one-way clutch 47 is idling.

The upper punch 3 is lowered into the die 2 and the raw material powder is pressurized by the upper and lower punches 3 and 4. Thereby, the molded object W is compression-molded. The upper and lower punches 3, 4 are lowered while sandwiching the molded body W, and the lower punch 4 waits downward from the lower surface 2 b of the die 2.

The servo motor 41 rotates in the reverse rotation direction b, the drive shaft 42 rotates in the reverse rotation, and the lower one-way clutch 47 engages with the lower cam 39 to rotate the lower cam 39 by 180 degrees. Advances to the molded body receiving position below the die 2 (see FIG. 8B). In this case, the upper one-way clutch 46 is idling with respect to the reverse rotation, and the powder supply member 35 is stopped at the standby position.

The upper punch 3 is lowered, and the formed body W is pushed out from the lower surface 2 b of the die 2 to be removed from the mold 2 and transferred onto the take-out member 38.

The drive shaft 42 is further rotated in the reverse rotation direction b by the servo motor 41, and the lower cam 47 is rotated 180 degrees via the lower one-way clutch 47. Accordingly, the take-out member 38 is retracted to the carry-out position (FIG. 8 ( b ')). In this way, the compact W is automatically continuously produced.

According to this reference example apparatus , the powder supply member 35 and the take-out member 38 have the same drive source for advancing and retreating. Therefore, the single servo motor 41 can supply the powder into the die 2 and take out and carry out the compact W. Both can be performed, and the powder forming apparatus as a whole can be reduced in size and cost.

In this reference example apparatus , the servo motor 41 rotates in the forward direction a to drive the powder supply member 35 forward and backward, and rotates in the reverse direction b to drive the extraction member 38 forward and backward. Both the powder supply to the die 2 and the removal of the molded body W can be performed by simple control by simply rotating and reversing.

In this reference example device , an upper one-way clutch 46 that transmits only the rotation in the forward rotation direction a is between the drive shaft 42 that is rotationally driven by the servo motor 41 and the upper cam 36 that advances and retracts the powder supply member 35. Since the lower one-way clutch 47 that transmits only the rotation in the reverse rotation direction b is interposed between the drive shaft 42 and the lower cam 39 for moving the take-out member 38 forward and backward, The supply member 35 and the take-out member 38 can be independently driven forward and backward, so that the entire apparatus can be reduced in cost and size, and the setup time can be reduced and the equipment operation rate can be improved. .

It is a schematic diagram of the powder shaping | molding apparatus by 1st Embodiment of this invention. It is process drawing for demonstrating operation | movement by the said 1st Embodiment apparatus. It is process drawing for demonstrating the operation | movement by the 2nd Embodiment apparatus of this invention. It is process drawing for demonstrating operation | movement by the said 2nd Embodiment apparatus. It is a figure which shows the taking-out member by 3rd Embodiment of this invention. It is a side view of the powder shaping | molding apparatus by the reference example outside this invention. It is a top view of the said powder shaping | molding apparatus. It is process drawing for demonstrating operation | movement of the said powder shaping | molding apparatus.

1 Powder molding equipment 2 Dies 3 and 4 Upper and lower punches
20 Extraction member
21 Upper plate
21a accommodation holding hole
22 Lower plate
A Molded body holding position
B Molded body unloading position
W molded body

Claims (2)

Filling the space formed by the fixed die and the lower punch inserted from the lower end opening of the die, the powder is compression molded by the upper punch inserted from the upper end opening of the die, In the powder molding method, after the compression molding, the lower punch is moved downward to be pulled downward from the lower end opening of the die, and the upper punch is further moved downward to discharge the molded body downward.
An upper plate having an accommodation holding hole for accommodating the molded body discharged from the die, and a molded body holding position for holding the molded body as a bottom portion of the accommodation holding hole when the molded body is discharged from the die. And a take-out member provided with a lower plate disposed so as to be tiltable between a molded body unloading position that is inclined to open the bottom when the molded body is carried out of the apparatus,
The take-out member is inserted between the lower end opening of the die and the lower punch pulled out downward with the lower plate positioned at the molding holding position, and the upper punch is moved downward to form. A powder molding method , comprising: discharging the body into the housing and holding hole, and then transporting the molded body out of the apparatus by tilting the lower plate to the molded body unloading position . In a powder molding apparatus in which powder is filled in a space formed by a die and a lower punch, and the powder is compression molded by an upper punch,
The lower punch and the upper punch can be moved relative to each other so that the lower punch can be positioned on the lower side of the die, and either the upper punch or the die can be discharged so that the molded product is discharged below the die. Is relatively movable,
A take-out member for taking out the molded body to the outside of the apparatus is provided, and the take-out member has an upper plate having an accommodation holding hole for housing the molded body discharged from the die, and when the molded body is discharged from the die. A molded body holding position for holding the molded body as a bottom portion of the housing holding hole, and a molded body unloading position for inclining and opening the bottom when the molded body is carried out of the apparatus. And a lower plate arranged to be tiltable between
A powder molding apparatus characterized by that.

Images