JP2006326847A - Filling machine of particulate material in compression mold-processing - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To rapidly perform filter paper replacing work by simplifying the assembling structure of a suction pad for sucking and transferring a particulate material in compression mold-processing using air sucking force. <P>SOLUTION: This filling machine is constituted so that the air passing sheet member 30, which is placed on the bolts 26 having permanent magnets 270 and 271 provided to a large number of their erected head parts 264, is screwed in the cavity part 22 of the suction pad 21, which sucks and transfers the particulate material charged by a leveling device, using air sucking force and the filter paper 32 is applied to the air passing sheet member 30 to be pressed from above by a demarcation sheet 37 comprising a magnetic material. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an apparatus for filling granular material in compression molding such as a press.

  In the compression molding process, the mold is heated to a high temperature in order to melt and react the granular material. As an object of compression molding processing in such a high-temperature heating state, production of a thin plate product, for example, a fuel cell separator is considered.

  By the way, it is extremely important that the fuel cell separator has high surface accuracy as well as gas impermeability and conductivity. For this reason, the initial separator was obtained by cutting a graphite plate or the like, but in recent years, attempts by press working are increasing due to demands on processing time and cost.

  That is, after a predetermined amount of raw material granular material is put into a mold, it is heated and pressed with a press machine to obtain a thin plate-like separator. According to this method, compared with other machined processes, It can be manufactured in a short time and at a low cost.

  However, the actual manufactured separator still has poor surface accuracy and does not reach the required level. The reason for this is that it is difficult to distribute thinly and evenly over the entire bottom surface of the female mold when the raw material granular material is introduced.

  As a solution to such a problem, a technique disclosed in Japanese Patent Laid-Open No. 2001-62858 (Patent Document 1) has been common.

  That is, in FIG. 14, reference numeral 50 denotes an input portion having a large number of input ports 51, and 52 denotes a position below the input portion 50 and from a position where all of the input ports 51 are closed to a position where all are open. It is the slide plate provided so that sliding was possible. Reference numeral 53 denotes a base for supporting the insertion portion 50 and the slide plate 52, 54 is a lower mold (female mold), and 55 is an upper mold (male mold).

  In the above-described configuration, after the powder particles are charged into the charging unit 50, the remaining amount is removed by the scraping rod 56, and then set to the lower mold 54 after a certain amount is removed. Next, when the slide plate 52 is slid and the input port 51 is sequentially opened from the end, the powder particles fall into the lower mold 54. Finally, after the input unit 50 and the base 53 are moved, the upper mold 55 is pressed.

  According to the above-described prior art, the granular material charged into the charging unit 50 can be made a fixed amount by the scraping rod 56. However, when dropping from the loading part 50 into the lower mold 54, the state of dropping of the granular material may be non-uniform depending on the moving speed of the slide plate, which improves the surface accuracy in the final product. It was difficult to make.

  As described above, it is disclosed in Japanese Patent Application Laid-Open No. 2003-223901 (Patent Document 2) that it is possible to prevent the powder particles from being distributed unevenly depending on the falling state when falling into the lower mold. Technologies are known.

  That is, in FIG. 15, 60 is a female mold, and 61 is a powder feeding box having a frame shape that is in close contact with the upper surface of the female mold 60 and whose upper and lower sides are opened. The powder feed box 61 is loaded with a powdery raw material 62.

  The powder feeding box 61 is slid while putting the powdery raw material 62 into the female mold 60 and rubbing the upper surface of the female mold 60.

  According to what is disclosed in Patent Document 2, it is understood that the powdery raw material 62 is improved so that it can be uniformly charged into the female mold 60.

  However, since the above-mentioned prior art is for scraping the upper surface of the female die 60, it is impossible to scrape the powdery raw material 62 when the powdery raw material 62 is put into the inner bottom surface of the female die 60.

  Further, when the upper surface of the female die 60 is scraped off, the scraped powdery raw material 62 is diffused around the upper surface of the female die 60. The female mold 60 is not only pressed during processing, but also has a high temperature due to preheating before processing, so that the dispersed powder particles are hardened and adhered, and there is a problem that maintenance is troublesome.

  Incidentally, a method of uniformly filling without depending on scraping is disclosed in Japanese Patent Laid-Open No. 11-49101 (Patent Document 3). That is, in FIG. 16, C is a container (mold) and s is a cavity.

  G is a supply hopper placed on the upper surface of the container C, and has a grid g2 on the bottom surface and a lid h2 on the upper surface. h1 is an air suction inlet provided in the lid h2. Powder p is stored in the supply hopper G.

  In the apparatus, air tapping is performed by the air suction blow-in port h1 (the supply hopper G and the container C are repeated in a high pressure state and a low pressure state), whereby the powder p is stirred and uniformly dropped from the grid g2 into the cavity s. In this state, when the supply hopper G is pulled up, the powder p is separated on the surface of the grid g2.

  According to this method, the powder p can be uniformly filled in the mold without using means such as scraping. However, it cannot be applied to powders of any material. For example, in the case of a resin powder containing carbon such as a raw material for a fuel cell separator, when the supply hopper G is pulled up, it leaks and falls from the grid g2. It is difficult to separate from the mold.

  In view of such a problem, the applicant of the present application is able to thinly and evenly and quickly disperse the granular material in the female mold without using technical means such as filling the mold directly with powder or air tapping. Japanese Patent Application No. 2004-365191 was filed earlier in order to provide a filling method and a filling device for a granular material in a compression molding process that can be put into a container.

The filling device of Japanese Patent Application No. 2004-365191 uses a suction plate by air suction, and is made to transfer and drop the powder material to the female mold in a state of being held by suction on the suction plate. The effect is that the powder and granule can be thrown in uniformly and quickly. However, the configuration of the suction disk in the filling device of Japanese Patent Application No. 2004-365191 is somewhat time-consuming to assemble and replace parts, leaving room for improvement in this respect.
JP 2001-62858 A JP 2003-223901 A JP-A-11-49101

  The present invention has been proposed in view of such problems. In a filling apparatus in a compression molding process, it is possible to quickly and uniformly throw a granular material into a female die using an air suction suction disk. An improved configuration for facilitating assembly and disassembly of the suction disk is provided.

In order to solve the problem,
The powder material filling apparatus according to claim 1 includes a material supply hopper that stores the powder material for compression molding and discharges it from a lower supply port, and the powder discharged below the material supply hopper. A suction plate for receiving a body material; a scraping means for scraping the powder material placed on the suction plate uniformly in a predetermined amount corresponding to the female mold; and the slide material placed on the suction plate. Air suction means for adsorbing and holding the granular material as it is, and the adsorbing plate can be transferred in a space between the material supply hopper and the female mold in a state of adsorbing and holding the granular material, and can be turned upside down. The air suction means is configured to drop the particulate material from the suction disk into the female mold by stopping air suction, and the suction disk has a hollow portion inside. Make the cavity communicate with the air suction means In both cases, the suction surface is provided with a plate-like ventilation member made of sintered metal, an appropriate filter, or a combination thereof, and an appropriate number of bolts having a screw hole at the upper end are provided in the cavity of the suction plate. The ventilation member is mounted on the upper end portion of the bolt and is screwed into the screw hole.

  The powder material filling apparatus according to claim 2 is a material supply hopper that stores powder material for compression molding and discharges it from a lower supply port, and powder discharged below the material supply hopper. A placement board for receiving body material, a scraping means for grinding the powder material placed on the placement board in a predetermined amount uniformly corresponding to the female mold, and an adsorption having an adsorption surface on the lower surface An air suction means for adsorbing and holding the powder material that has been slid and placed on the placement board as it is on the adsorption surface of the adsorption plate, and the adsorbing plate in a state in which the powder material is adsorbed and held And a transfer means capable of transferring in a space between the material supply hopper and the female mold, and the air suction means causes the particulate material to fall from the suction plate into the female mold by stopping the air suction. The suction plate has a hollow portion inside and is configured as follows. The cavity is connected to the air suction means, and the suction surface is provided with a plate-like ventilation member made of sintered metal or an appropriate filter or a combination thereof. An appropriate number of bolts having the above are provided downward, and the ventilation member is applied to the upper end portion of the bolt and screwed into the screw hole.

  The powder material filling apparatus according to claim 3 is the powder material filling apparatus according to claim 1 or 2, wherein a permanent magnet is attached to the upper end portion of the bolt, and ventilation is performed. A filter sheet is provided on the outer surface of the member, and a partition sheet made of a magnetic material for partitioning the outer surface of the filter paper into a plurality of small sections is provided.

  The powder material filling apparatus according to claim 4 is the powder material filling apparatus in compression molding processing according to claim 3, wherein the partition sheet is adsorbed and held by a magnetic force to a screw screwing the ventilation member. It is characterized by being.

  The powder material filling apparatus according to claim 5 is the powder material filling apparatus according to claim 4, wherein a cylindrical bolt head is attached to the upper end of the bolt. A through hole perpendicular to the screw hole is provided in the head, and at least two permanent magnets are inserted into the through hole so as to sandwich the screw hole.

  According to the present invention, the following effects can be obtained.

  According to the powder material filling apparatus according to claim 1, since the ventilation member can be positioned and mounted only by mounting the ventilation member on the upper end of the bolt and screwing, the assembly and disassembly of the suction cup Can be done easily.

  According to the powder material filling apparatus according to claim 2, even if the powder material is adsorbed on the lower surface of the suction disk, assembling and disassembling of the suction disk can be performed in the same manner as in the invention. It can be carried out.

  According to the powder material filling apparatus of the third aspect, the magnetic partition sheet can be easily set on the outer surface of the ventilation member by the magnetic force of the permanent magnet provided at the upper end of the bolt. When thin filter paper or the like is stacked on the outer surface of the ventilation member, it can be pressed by the partition sheet. Therefore, when the filter paper is replaced with a new one, it can be easily performed by simply removing the partition sheet.

  According to the powder material filling apparatus in the compression molding process according to the fourth aspect, since the screw fixing the ventilation member is magnetized, the partition sheet is reliably adsorbed to the head of the screw.

  According to the apparatus for filling granular material in the compression molding process according to claim 5, the partition sheet is formed on the head of the screw holding the ventilation member by the action of the magnetic lines of force passing from the permanent magnet to the bolt and the screw. Because it is strongly sucked, the section sheet can be easily and securely attached.

  The best mode for carrying out the present invention will be described below with reference to the drawings. The present invention is not limited to the present embodiment. Further, in the description of the present embodiment, parts having the same configuration and operational effects are denoted by the same reference numerals, and redundant description is not performed.

(Embodiment 1)
FIG. 1 shows a longitudinal cross-sectional view of a powder material filling apparatus according to an embodiment of the present invention, and FIG. 2 shows an enlarged detailed cross-sectional view of FIG. 1A.

  In the figure, 1 shows the whole powder material filling apparatus. Reference numeral 2 denotes a material hopper in which the granular material 3 is stored. The material hopper 2 has a supply port 4 for discharging the material at the lower end, and the material is appropriately replenished from above.

  The powder material 3 is a powder of resin, carbon, metal or the like or a mixture thereof.

  5 is a scraping means composed of an appropriate frame plate 6, which is provided in a freely reciprocating manner below the material hopper 2. The granular material 3 is slid by the relative movement of the supply port 4 and the frame plate 6. It will be cut.

  Reference numeral 7 denotes a movable cylinder which forms the main body of the powder material filling apparatus 1 and is attached to a hollow rotating shaft 8. As shown in FIG. 3, the pivot shaft 8 is pivotally supported by support plates 9 arranged on the left and right sides with the movable cylinder 7 interposed therebetween. The support plate 9 has rollers 10 at the top and bottom, and is supported by a guide 11 so as to be movable in the front-rear direction of the paper.

  A motor 12 is provided at one end of the rotating shaft 8 via a gear mechanism 13, and a blower or a hose 15 of a vacuum pump 14 is connected to the other end to communicate with an internal hollow portion. .

  14A is an air suction means constituted by the vacuum pump 14, the hose 15, the hollow rotating shaft 8, an intake hose 25 described later, and the like.

  Reference numeral 16 denotes an operating rod of the movable cylinder 7, and a suction plate 21 described later is held at the tip (upper end) portion.

  The operating rod 16 can be moved forward and backward from the movable cylinder 7 by air supplied to and discharged from the movable cylinder 7.

  An air hose 17 supplies and discharges compressed air to and from the movable cylinder 7.

  Reference numeral 25 denotes an intake hose provided so as to communicate the hollow rotating shaft 8 with an intake port 24 (described later) of the suction plate 21.

  Thus, in FIG. 1, reference numeral 18 denotes a fixed cylinder disposed in the vicinity of the side of the movable cylinder 7, and has an operating rod 19 that can be moved back and forth in the horizontal direction by its operation.

  The movable cylinder 7 and the rotating shaft 8 can be moved integrally along the guide 11 in the horizontal direction by the advance / retreat operation of the operating rod 19. In addition, the rotating shaft 8 and the movable cylinder 7 can be integrally rotated by 180 ° by the motor 12 and the gear mechanism.

  The movable cylinder 7, the fixed cylinder 18, and the motor 12 constitute transfer means 20 that transfers the suction plate 21 in a three-dimensional space between the material hopper 2 and a female die 34 described later, and reverses it.

  Reference numeral 21 denotes the suction plate, which is held at the tip (upper end) of the operating rod 16 and can be moved in the vertical direction by the operation of the operating rod 16, and in the horizontal direction together with the movable cylinder 7 by the operation of the fixed cylinder 18. Can be moved to. The motor 12 rotates 180 ° together with the movable cylinder 7 and can be reversed and restored.

  Thus, as shown in detail in FIGS. 2 and 8, the suction plate 21 has a substantially rectangular plane and has a hollow portion 22 inside. The hollow portion 22 is divided up and down by a partition wall 23, but communicates with each other through a communication hole 28. Further, the upper cavity portion 22 opens at the upper surface, and the lower cavity portion 22 communicates with the hose 15 and the vacuum pump 14 from the rotary shaft 8 via the intake hose 25 via the intake port 24.

  Further, a plurality of hexagon bolts 26 screwed into the partition wall 23 are erected in the upper cavity portion 22 at predetermined intervals. The hexagon bolt 26 is not particularly limited to a hexagon.

  As shown in FIGS. 4 to 6, the hexagon bolt 26 has a hexagonal bolt main body 260, a screw portion 261 provided at a lower end portion, and an upper end portion 262 provided with a screw hole 263. The screw part 261 is screwed into the partition wall 23 so as to be detachable.

  H.264 is a bolt head having a substantially cylindrical shape, and a bolt insertion hole 265 is formed from the bottom surface. By inserting the upper end 262 of the bolt 26 into the bolt insertion hole 265, the bolt upper end 262 is mounted. Is.

  Reference numeral 266 denotes a screw insertion hole formed from the upper end surface of the bolt head 264. The screw insertion hole 266 has a slightly smaller diameter than the bolt insertion hole 265 and is concentrically connected to the screw hole 263.

  Reference numeral 267 denotes a through hole provided in a side body portion of the bolt head 264 and is orthogonal to the bolt insertion hole 265.

  Reference numeral 268 denotes a screw having a dish-shaped head portion 269, which is inserted from the screw insertion hole 266 of the bolt head portion 264 and screwed into the screw hole 263 of the bolt upper end portion 262. The screw 268 is used to fix a ventilation member 30 described later to the suction board 21.

  Next, reference numerals 270 and 271 denote cylindrical permanent magnets which are inserted into the through holes 267 of the bolt head 264 and face each other so as to sandwich the upper end 262 therebetween. Thus, the magnets 270 and 271 are inserted so that the same poles face each other.

  Reference numeral 29 denotes an upper surface opening, that is, a suction surface of the upper cavity portion 22. Reference numeral 30 denotes a ventilation member placed on the hexagon bolt 26 and covered by the suction surface 29. The ventilation member 30 is maintained horizontal because the hexagon bolt 26 is positioned. For example, the ventilation member 30 is formed by stacking a flat plate-like sintered metal 31 and a resin filter or filter paper 32, but the present invention is not limited to this.

  The sintered metal 31 of the ventilation member 30 has a large number of mounting holes as shown in FIG. 7, and screws 268 are passed through the mounting holes and screwed into the screw holes 263 of the bolt upper end portion 262. It is fixed. Accordingly, the numerous mounting holes of the sintered metal 31 correspond to the positions of the hexagon bolts 26 screwed into the partition wall 23.

  The filter paper 32 is simply placed on the sintered metal 31 and is pressed down by a partition sheet 37 described later.

  In addition, an appropriate pin 33 is provided on the outer peripheral portion of the suction disk 21 so as to perform positioning with the above-described scraping means 5.

  Next, the partition sheet 37 will be described. As shown in FIG. 8, the partition sheet 37 is formed in a mesh shape with a thin magnetic metal frame 38, and has a large number of small partitions 39 surrounded by the magnetic metal frame 38.

  Although all the small sections 39 shown in FIG. 8 have the same shape and area, they may be changed as necessary. The partition sheet 37 is pressed against the filter paper 32 by being attracted to the magnets 270 and 271 attached to the hexagon bolt 26.

  That is, the magnetic metal frame 38 is strongly attracted to the screw head 269 by the action of the magnetic lines of force passing from the magnets 270 and 271 to the bolt upper end portion 262, the screw 268 and the screw head 269.

  The filter paper 32 has a relatively high replacement frequency compared to the sintered metal 31, but the replacement work is extremely simple because it is merely pressed by the partition sheet 37 by the magnetic force as described above.

  Further, since the sintered metal 31 itself may be made of a non-magnetic material having corrosion resistance, the degree of freedom in material selection is high.

  Hereinafter, the manufacturing process by the powder material filling apparatus in the compression molding process will be briefly described with reference to FIGS.

  FIG. 9 shows a state in which the granular material 3 is evenly cut and placed on the upper surface of the suction plate 21, detached from the scraping device 5 and transferred downward. At this time, the vacuum pump is activated and air is sucked through the sintered metal 31 and the filter paper 32 placed on the adsorption surface 29, and the particulate material 3 is adsorbed on the surface of the filter paper 32 to maintain a uniform state. Since the partition sheet 37 is placed on the filter paper 32 and the movement of the powder material 3 is suppressed by the mesh-like frame 38, the uniform state of the powder material 3 is more effectively maintained. The

  Reference numeral 34 denotes a female die which is in a predetermined position and preheated.

  FIG. 10 shows the transfer process. That is, with the vacuum pump 14 still operating, the fixed cylinder 18 operates to move the suction plate 21 together with the movable cylinder 7 in the horizontal direction, transfer it directly above the female die 34, and 180 degrees by the operation of the motor 12. Move it down. Even in this state, the granular material 3 does not fall due to the adsorption force of the vacuum pump 14.

  FIG. 11 shows a filling process of the granular material. That is, the operating rod 16 of the fixed cylinder 7 moves forward with the vacuum pump 14 still operating, and the suction plate 21 is lowered to the position close to the female die 34. Then, the suction force disappears by stopping the vacuum pump 14, so that the granular material 3 falls from the entire surface of the ventilation member 30 at once, and the granular layer 35 is uniformly formed in the female mold 34. The

  Then, the process is restored to the standby process through the reverse process.

(Embodiment 2)
Next, according to FIGS. 12-13, it demonstrates per the manufacturing process by the filling apparatus of the granular material material in Embodiment 2. FIG.

  FIG. 12 shows a standby process of the powder material filling apparatus according to the second embodiment.

  In FIG. 12, the movable cylinder 7 is provided downward from the beginning, the suction plate 21 is similarly provided downward, and the ventilation member 30 described in the first embodiment is screwed to the suction surface 29. The partition sheet 37 presses the surface with a magnetic force. Moreover, the motor for rotating the hollow shaft 8a is not provided. The scraping means 5 is provided so as to be able to reciprocate in the horizontal direction by a fixed cylinder 18 a different from the fixed cylinder 18 that moves the movable cylinder 7. The scraping means 5 is provided with a mounting board 36 for receiving the scraped granular material. The mounting plate 36 includes the ventilation member 30a similar to the suction plate 21, but it is not necessary to provide a partition sheet.

  In FIG. 12, by operating the fixed cylinder 18a, the sliding-off means 5 and the mounting board 36 are scraped by reciprocating the lower surface of the material supply hopper 2 as shown by a two-dot chain line. The granular material 3 is slid and placed uniformly on the board 36.

  From this state, the actuating rod 16 of the movable cylinder 7 is advanced (downward) to lower the suction plate 21 to the upper surface of the mounting plate 36, and the vacuum pump 14 is actuated to activate the powder on the suction surface 29 of the suction plate 21. The granular material 3 is adsorbed. Next, with the vacuum pump 14 being operated, the operating rod 16 of the movable cylinder 7 is retracted, and the suction plate 21 is lifted and pulled away from the mounting plate 36.

  Then, as shown in FIG. 13, the fixed cylinder 18 is operated to move the suction plate 21 together with the movable cylinder 7 to a position above the female mold 34.

  From this state, the working rod 16 of the movable cylinder 7 is advanced again to lower the suction plate 21 to the mold surface, and the vacuum pump 14 is stopped, so that the suction force is lost and the granular material 3 is passed through the ventilation member. It is dropped from the entire surface of 30 at once, and a granular material layer is uniformly formed in the female die 34.

  As mentioned above, although Embodiment 1 and Embodiment 2 were described, in any case, since the powder material 3 is not cut by the mold surface, the diffused powder material 3 is the mold surface. This eliminates the problem of melt adhesion. Further, since the granular material 3 that has been crushed uniformly by a predetermined amount is transported and dropped using the adsorption force, it can be filled thinly and uniformly as desired.

  Moreover, in Embodiment 2, since the process of reversing the movable cylinder 7 is unnecessary, the process can be simplified.

  The present invention simplifies the assembling structure of the suction cup for thinly, uniformly and quickly filling the powder material into the mold by using air suction in compression molding processing, and particularly by the configuration using magnetic force. The filter paper can be attached and detached quickly, and is extremely useful in industry.

It is a principal part longitudinal cross-sectional view of the filling apparatus of the granular material material in the compression molding process by Embodiment 1 of this invention. FIG. 2 is an enlarged detailed cross-sectional view of a part A in FIG. 1. It is the side view which simplified the filling apparatus of the granular material shown in FIG. It is a top view of the hexagon bolt with which the filling apparatus of the granular material shown in FIG. 1 is equipped. It is the VV 'sectional view taken on the line in FIG. It is a longitudinal cross-sectional view shown in the state which decomposed | disassembled the hex bolt same as the above. It is a perspective view of the sintered metal provided in the suction disk of the said filling apparatus. It is a perspective view of the suction disk in a filling apparatus same as the above. It is a longitudinal cross-sectional view which shows one operation state in the compression molding process of a filling apparatus same as the above. It is a longitudinal cross-sectional view which shows another operation state in the compression molding process of a filling apparatus same as the above. It is a longitudinal cross-sectional view which shows another operation state in the compression molding process of a filling apparatus same as the above. It is a longitudinal cross-sectional view which shows one operating state of the filling apparatus of the granular material material in the compression molding process by Embodiment 2 of this invention. It is a longitudinal cross-sectional view which shows another operation state of a filling apparatus same as the above. It is a surface measurement figure which shows the material supply method in the separator manufacturing apparatus as the conventional granular material material filling apparatus. It is a side view which shows the material supply method in the separator manufacturing apparatus of another prior art example. It is a side view which shows the material supply method in the granular material material filling apparatus of another another conventional example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Powder material filling apparatus 2 Material supply hopper 3 Powder material 5 Sliding means 14A Air suction means 20 Transfer means 21 Suction plate 22 Cavity part 26 (Hexagon) bolt 263 Screw hole 264 Bolt head 267 Through hole 268 Screw 270 Permanent magnet 271 Permanent magnet 29 Adsorbing surface 30 Plate-shaped ventilation member 31 Sintered metal 32 Filter paper 34 Female mold 36 Mounting board 37 Compartment sheet 39 Subcompartment

Claims (5)

A material supply hopper that stores powder material for compression molding and discharges it from a lower supply port, a suction plate that receives the powder material discharged under the material supply hopper, and a suction plate mounted on the suction plate. A predetermined amount of powder material that is placed in a predetermined amount corresponding to the female mold, and an air suction device that holds and holds the powder material that has been placed on the suction plate as it is. And a suction means capable of transporting the suction disk in a space between the material supply hopper and the female mold in a state where the particulate material is sucked and held, and the air suction means is capable of air suction. The structure is such that the granular material is dropped from the suction disk into the female mold by stopping, and the suction disk has a cavity inside, and this cavity is communicated with the air suction means, and the suction surface Sintered metal or appropriate A filter or a plate-like ventilation member formed by combining them is provided. An appropriate number of bolts having a screw hole at the upper end portion are erected in the cavity portion of the suction plate, and the ventilation member is arranged at the upper end of the bolt. An apparatus for filling granular material in compression molding, wherein the apparatus is placed on a portion and screwed into the screw hole. A material supply hopper that stores powder material for compression molding and discharges it from a lower supply port, a mounting board that receives the powder material discharged below the material supply hopper, and the above-described mounting board The powdery material placed on the surface is slid and placed on the placement board, the suction means having a suction surface on the lower surface, and a predetermined amount of the grinding material corresponding to the female mold. Air suction means for adsorbing and holding the granular material as it is on the adsorption surface of the adsorption plate, and transferring the adsorption plate in the space between the material supply hopper and the female mold while adsorbing and holding the granular material. The air suction means is configured to drop the particulate material from the suction plate into the female mold by stopping air suction, and the suction plate has a hollow portion inside. If this cavity is communicated with the air suction means, In addition, the suction surface is provided with a sintered metal, a suitable filter or a plate-like ventilation member formed by combining them, and an appropriate number of bolts having a screw hole at the upper end face downward in the cavity of the suction plate. An apparatus for filling granular material in compression molding, wherein the ventilation member is applied to an upper end of the bolt and screwed into the screw hole. A permanent magnet is attached to the upper end of the bolt, a filter sheet is provided on the outer surface of the ventilation member, and a partition sheet made of a magnetic material is provided to partition the outer surface of the filter paper into a number of small sections. The apparatus for filling granular material in the compression molding process according to claim 1 or 2. 4. The powder material filling apparatus in compression molding according to claim 3, wherein the partition sheet is adsorbed and held by a magnetic force to a screw fixing a ventilation member. A cylindrical bolt head is mounted on the upper end of the bolt, and a through-hole orthogonal to the screw hole is provided in the head, and at least two permanent magnets sandwich the screw hole in the through-hole. 5. The apparatus for filling granular material in compression molding processing according to claim 4, wherein: is inserted.

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