JP2003025096A - Press apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized press apparatus having high treating capacity from which grinding chip and grinding fluid are easily recovered. SOLUTION: The press apparatus is provided with a tubular cylinder 1, a gate damper 21 opening and closing the upper opening part of the cylinder 1, a compression piston 9 disposed at the lower opening part of the cylinder 1 and coming in and going out from below the lower opening, and a waste fluid receiver 14 arranged below the cylinder and the compression piston. The cylinder 1 is provided with the upper opening part, the lower opening part and a cylindrical part which has a grinding fluid discharge port 5 disposed between the middle to the upper part or at the upper part of the cylindrical part and to which the grinding chip containing the grinding fluid is charged. Thereby the grinding fluid is recovered. The gate damper receives the compressive force with a base plate 3. On the gate damper, a fixed amount charging measure 18, an upper gate damper 6 and a hopper 7 are laid. The compression piston has two step speeds, namely, the speed at the finishing time and the speed at the starting time higher than the former. A discharging station 24 is arranged at the opposite side of a charging and compressing station 23 to discharge the grinding chip with a grinding chip recovering part 11 and a pusher 10 for discharging the grinding chip.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press device for draining grinding dust containing a grinding liquid generated in wet grinding.

[0002]

2. Description of the Related Art A grinding process is a necessary process for precision finishing, which cannot be achieved without a grinding process in the machine / metal working industry. In this grinding process, a large amount of grinding liquid is used, and a large amount of grinding dust is discharged as waste. Further, since the grinding liquid is supplied from the grinding liquid tank to the object to be ground by the pump and the grinding liquid is circulated and used, it is necessary to replenish the amount to be carried out to the grinding dust.

As a method of separating the grinding fluid and the grinding dust, a method of separating by a magnetic separation drum and a method of scraping up the grinding dust from the bottom of the grinding fluid tank are generally used. 6 pieces of grinding debris separated by this method
It contains as much as 0% to 85% grinding fluid. In addition, as an expensive separation technique, there are a centrifugal dehydrator, a vacuum dehydrator, a filtration device, etc., but the water content does not fall below 50%. Further, it is said that a device utilizing high-speed rotation is severely worn by grinding debris.

Reducing the liquid content of grinding dust is an essential element for reducing waste and reducing the amount of oil used, and also for removing liquid waste from grinding dust during storage and transportation of polishing dust. The spill is bad for the environment. On the other hand, there is a demand for a low cost for removing grinding dust.

Therefore, in Japanese Examined Patent Publication No. 52-35003, most of the grinding scraps of the stainless steel plate containing the grinding oil are removed by a static separation method or a centrifugal separation enclosing method, and then the grinding scraps are discharged into a grinding liquid waste hole or a gap. It is housed in a cylindrical cylinder having, and a piston is inserted into the cylinder to squeeze the cutting debris to separate the grinding debris and the grinding oil, and further incinerates the compressed grinding debris lump. ing.

[0006]

However, in Japanese Patent Publication No. 52-35003, the grinding dust contained in the grinding oil is squeezed by using a cylindrical cylinder, and the grinding oil is squeezed and separated to form a lump of grinding dust. However, there is no disclosure or suggestion of arranging this step as an apparatus in a factory to efficiently collect grinding dust and grinding oil. Further, since the piston is moved from the upper side to the lower side to be squeezed, the grinding oil discharged from the gap between the piston and the cylinder to the piston side returns to the inside of the cylinder when the piston returns to the upper side. On the other hand, JP-A-5
No. -293737 discloses a cylinder in which a piston is pushed upward from below a cylindrical cylinder and a cylindrical upper opening sucks the grinding fluid. However, since leakage between the piston and the cylinder is eliminated, it is difficult to manufacture and maintain the cylinder and the piston. On the other hand, among grinding fluids, water-soluble grinding fluids are discharged in a dewatering press because bacteria propagate in a fixed place in an environment of high outside temperature, bacteria grow, and decay and deterioration progress so that they cannot be reused. The recycling of the grinding fluid needs to be dehydrated at the place of generation.

In view of the above problems, it is an object of the present invention to provide a compact press machine having a high processing capacity which can be installed in the vicinity of a grinding machine or the like which produces grinding dust.
Another object is to efficiently and easily collect grinding dust and grinding fluid.

[0008]

DISCLOSURE OF THE INVENTION In the present invention, grinding chips containing a grinding fluid having an upper opening, a lower opening, and a cylindrical portion having a grinding fluid discharge hole from a middle portion to an upper portion or an upper portion are charged. A cylindrical cylinder that opens and closes, a gate damper that can open and close the upper opening, a compression piston that can enter and exit the lower opening from below the lower opening, and a cylinder and the compression piston that are provided below the compression piston. The above-mentioned problems are solved by providing a press device having a drainage receiver (claim 1). That is, since the upper opening of the cylindrical cylinder having upper and lower openings can be opened and closed by the gate damper, it is possible to throw grinding dust into the cylindrical cylinder by opening the gate damper. Also, since the gate damper is closed and the squeezing piston can be moved upward from below the cylinder, the grinding dust thrown into the cylinder is squeezed and discharged from the discharge holes provided in the upper and middle outer circumferences of the squeeze cylinder. To do. Further, the grinding liquid does not flow downward from the gap between the cylinder and the piston, and the grinding liquid does not return to the grinding dust side. These grinding fluids leak to a drainage receiver provided below the cylinder and the squeezing piston.
In particular, in the present invention, attention is paid to the point that the squeezed grinding dust does not easily drop from the cylinder due to the squeezing force even after the squeezing piston is lowered after the squeezing and comes out from the cylinder lower opening. Thus, even with a cylinder that does not have a bottom and opens up and down, grinding dust can be squeezed and can be moved with grinding dust put in, and grinding dust can be moved to the next process, and grinding after pressing Debris can be ejected from the cylinder.

The gate damper that opens and closes the upper opening receives a large force from the lower side by the squeezing piston. Therefore, in the invention of claim 2, the gate damper is provided so as to be able to move in and out between the cylindrical cylinder upper opening portion and the flat base plate provided on the upper portion of the cylindrical cylinder, and the gate damper is provided when the upper opening portion is closed. The base plate receives the upward force. Therefore, if the base plate is made sufficiently strong, the structure of the gate damper can be simplified.
In addition, the gap between the base plate, the gate damper, and the upper opening is sized so that it can go in and out, but even if it is a little large gap, the gate damper receives the squeezing force of the squeezing piston at the base plate, so high precision is not required. . Further, after the gate damper is opened, the cylinder and the base plate do not touch each other, and the cylinder can move without resistance.

Since the compression cylinder is provided below,
The upper space can be used, and the grinding dust supplied from the outside can be charged by the gate damper that opens and closes the upper opening, and the grinding dust charging process and the pressing process can be performed at the same position. Furthermore, if it is simply opened and closed, the amount of grinding dust that is input becomes unstable and the amount of squeezing becomes unstable,
Sometimes it overflows. In view of this, in the invention of claim 3, a fixed amount loading opening provided on the gate damper when the cylinder is closed, an upper gate damper for opening and closing an upper opening of the fixed loading slot, and the fixed loading. In the upper opening of the box, a hopper having an outlet provided with the upper gate damper sandwiched and into which grinding dust containing grinding fluid is charged is provided to stabilize the charging amount. When the above-mentioned base plate is used, a grinding waste passage hole is provided above the cylinder of the base plate, and a fixed amount charging chamber, an upper gate damper, and a hopper are provided in that order.

In the squeezing step, the piston is inserted from the lower opening to squeeze the grinding debris. The grinding debris has a good discharge of the grinding liquid in the initial stage of compression, but in the latter half the waste liquid collects and spouts in the cylinder. It is recommended to increase the speed during idling and the initial stage of pressing, and decrease it during the latter half. Therefore, in claim 4, the piston speed is set to a two-stage speed such that the end time is slower during compression than at the start of compression.

Since the pressing piston can be moved in and out from the lower side of the cylinder, the steps of charging and pressing can be performed at the same station. -It is sufficient to provide two places, a squeezing station and a discharging station for discharging grinding dust. Therefore, in claim 5, means for moving the cylinder from the charging / compressing station in which the gate damper and the compression piston are installed to the discharging station, the grinding dust collecting section arranged below the cylinder at the discharging station, and the discharging A pusher for discharging grinding debris, which is provided at the station and is capable of coming in and out from above the upper opening, is provided at the upper opening.

More specifically, in claim 6, two cylinders are provided for the object so as to be horizontally reciprocally rotatable on a concentric circle centered on the vertical rotation axis. As a result, for example, the reciprocating rotation of the rotary shaft provided on the base plate can reciprocate between both stations to insert, squeeze, and discharge the grinding dust. In addition, a complicated clutch mechanism that exceeds two divisions is not required, no wear parts or adjustments are necessary, there are no mistakes in division, and the structure is simple.

The squeeze drainage in the squeezing process (station) is stored in the drainage receiver provided at the lower part of the cylinder, but if the distance between the position of the grinding waste to be squeezed and the drainage receiver is long, the waste liquid is scattered around. Easier to do. Further, since solid materials such as grinding dust are also generated in the drainage liquid, the drainage port for discharging the drainage liquid from the waste liquid receiver may be clogged. Therefore, in claim 7, the drainage receiver can be moved up and down at the same time as the squeezing piston, and the drainage receiver is provided with an outlet for discharging the drainage further downward than the drainage receiver, and is fixed to the charging / squeezing station to move vertically A bar was provided to move in and out of the discharge port. Since the drainage receiver moves up and down of the squeeze piston, that is, at the same time as the squeezed grinding dust, the drainage is less scattered around.
In addition, the rod moves in and out of the discharge port by the vertical movement of the squeezing piston to prevent the clogging of fine grinding dust in the grinding fluid.
The squeezing grinding drainage can be easily collected.

In the discharge station, the grinding dust given in advance is pushed down by the pusher for discharging the grinding dust and dropped to the grinding dust collecting portion depending on the state of compression, but it is dropped in the compressed shape and piled up as a lump. There are cases.
Therefore, in claim 8, one or two flat bars are placed in the lower part of the discharge station in a crosswise manner at the dropping position so that the width direction is vertical, and further, the flat bar is pushed by the discharge cylinder. Provide a grinding dust crushing jig to hit.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described. FIG. 1 is a schematic view of a press device showing an example of an embodiment of the present invention, and a cross-sectional view taken along the center line XX ′ of FIG. 2.
FIG. 2 is a schematic plan view taken along the horizontal line YY ′ of FIG. In FIGS. 1 and 2, a rotating shaft 2 is vertically provided so as to penetrate a base plate 3 horizontally attached to a pedestal (not shown). The rotating shaft 2 is provided with two arms 2a extending in the horizontal direction into two equal parts so as to be rotatable rightward and counterclockwise as one body together with the two rotating shafts. A cylindrical cylinder 1 having an upper opening 1a and a lower opening 1b is vertically held under the base plate 3 at each tip of the two arms 2a so as to keep a gap 20 under the base plate 3. Since the lower gate damper 21 is inserted in the gap 20 in parallel with the base plate 3, the gap 20 has a thickness of the lower gate damper 21 plus 1 to 2 mm.
This is useful for facilitating the drainage of the drainage liquid from the cylinder 1 when the grinding dust is squeezed and for facilitating the movement of the gate damper 21. The cylinder 1 is provided with several drainage discharge holes 5 at a position which is ⅓ in height from the upper opening. In addition, a drainage receiver 1 for receiving grinding fluid and the like discharged below the cylinder 1.
4 is provided and is collected through a drainage recovery hose 16 into a waste fluid tank (not shown). Further, one end of the drainage receiver 14 and the drainage recovery hose 16 are freely connected via a moving drainage pipe 15. The rotary shaft 2 is driven by a rotary shaft drive cylinder 4 for operating above the rotary shaft so that the rotary shaft 2 rotates alternately in the left and right directions in one cycle of the pressing process.

As shown in the drawing, a charging / compressing station 2 for charging and compressing grinding dust at the right side position below the base plate 3.
3 is provided. The base plate 3 is provided with a grinding dust passage hole 17 slightly smaller than the inner diameter of the cylinder 1 at a position facing the upper opening 1a of the feeding / squeezing station 23, and the amount of grinding dust to be fed is determined above the grinding dust passage hole 17. A fixed amount charging box 18 is provided. This quantitative input box 18
A proximity sensor 8 for detecting ultrasonic waves, light, etc. is provided on the upper part of the unit to detect whether or not a predetermined amount of the grinding dust 41 to be charged has reached a predetermined amount. A grinding dust hopper 7 having an opening is provided at a position facing the position of the upper portion of the charging fixed amount box 18. The upper gate damper 6 is installed in the opening of the grinding hopper.
Is provided. Grinding scraps 40 containing the grinding fluid are put into the grinding scrap hopper from the grinding device by a belt conveyor or the like (not shown). The grinding dust 40 is charged into the fixed quantity charging chamber 18 at a position where the gate damper 21 below the constant quantity charging chamber 18 is closed and the upper gate damper 6 is opened and the grinding scrap 41 is charged from the upper opening of the constant quantity charging chamber 18. . When the grinding dust reaches a predetermined amount and the sensor 8 senses it, the upper gate damper 6 is closed, and the feeding of the grinding dust to the fixed quantity feeding box 18 is stopped. The cylinder 1 is stopped at a predetermined position, the gate damper 21 is opened, and the grinding dust 41 is introduced from the upper opening of the cylinder. At this time, the piston is placed in the lower opening of the cylinder 1 at a position where insertion of the piston is stopped by about 10 mm so as to serve as the bottom of the cylinder.

The charging / squeezing station 23 is a cylinder 1
A piston 9 for squeezing the grinding dust 42 in the cylinder 1 is provided at a position facing the lower opening 1b of the cylinder 1 through the lower opening of the cylinder. The piston 9 is made movable up and down by a pneumatic cylinder 25, and the squeezing speed of the piston 9 is controlled to a two-step speed such that the end time is slower than the squeezing start time, and abrupt ejection of drainage liquid at the time of squeezing is prevented. Also, the pressing time is shortened. After the compression is completed, the piston 9 is returned to the lowered position 22.

As shown in the figure, the lower opening 1b of the cylinder 1 is released at a lower position of the base plate 3, that is, at the 180 ° advancing position of the charging / squeezing station 23, apart from the base plate 3, and the grinding waste of the drainage receiver 14 is released. A discharge station 24 is provided at the position where the hole 12 is provided. The discharge station 24 is provided with a pusher 10 for pushing down the squeezed grinding dust 42 at the upper part thereof.
0 is movable up and down by a pneumatic cylinder (discharge cylinder) 26. Below the discharge station 24, a flat bar is placed vertically with the width direction being vertical.
A crushing jig 13 shaped like a mountain when viewed from the side is provided. A grinding dust collecting bucket (grinding dust collecting section) 11 for collecting and storing grinding dust is provided below the crushing jig 13.

As shown in the drawing, a drainage receiver 14 for receiving the drainage liquid discharged when the grinding dust is squeezed below the squeezing piston 9 inserted into the cylinder 1 at the charging / squeezing station 23.
Is provided. The drainage receiver 14 is attached directly below the piston 9 in the same manner as the vertical movement of the piston 9, and when the grinding dust is squeezed by the piston 9, the spouting of the ejected liquid is prevented from occurring in the piston 9 and the cylinder 1. It is reduced by keeping the height constant. The drainage receiver 14 is provided with one liquid drainage port 14a for collecting the drainage liquid, and a moving drainage pipe 15 having one end free is connected to the lower portion of the drainage port 14a. The moving drainage pipe 15 has a diameter larger than that of the discharge port 14a. Discharge port 1 for waste liquid receiver 14
4a above the discharge port at the time when the squeezing piston 9 of the charging / squeezing station 23 is inserted into the lower opening of the cylinder 1 at a position opposite the discharge port at the upper position of 4a, and 10 mm above the diameter of the discharge port. Round steel (bar) with a slightly smaller diameter 1
Mount 9 vertically from the base plate. As the compression piston 9 moves up and down, the round bar 19 moves up and down in the discharge port 14a,
It prevents clogging due to fine debris in the squeezed discharged liquid.

[0021]

[Example] Grinding dust from a cylindrical grinding machine containing about 75% of a water-soluble grinding fluid was carried out by using the pressing device. First, the grinding dust 40 containing the grinding fluid is charged from the hopper 7 into the constant amount charging chamber 18 having an inner diameter of 130 mm in the constant amount charging chamber 18 above the grinding dust charging / pressing station 23.
At this time, the lower gate damper 21 is closed, and the compression piston 9 is inserted into the lower open portion 1b of the cylinder 1 of the charging / compression station 23 by about 10 mm and stopped. The amount of grinding debris 41 that has been put into the fixed amount feeding box 18 is approximately 150 mm in height.
When it reaches the upper limit, the sensor 8 detects it and the upper gate damper 6
When the discharge process of the next process is completed, the gate damper 21 is opened and the grinding dust 41 of the fixed amount charging chamber 18 is charged into the cylinder 1 having an inner diameter of φ140 mm. At this time, since the internal volume of the cylinder 1 has a volume larger than the volume of the fixed amount charging chamber 18, the overflow of the grinding dust 42 from the cylinder causes dirt on the drainage receiver due to the grinding dust and an obstacle to the opening / closing operation of the gate damper 21. It won't happen. The gap between the lower surface of the gate damper 21 and the upper opening 1a of the cylinder 1 is 1
Although it is ˜2 mm, when the squeezing piston 9 squeezes, the grinding dust has fibers overlapping with each other, so that the grinding dust hardly protrudes from this gap. Grinding debris is dropped and thrown into the cylinder 1 of the charging / squeezing station 23, and the gate damper 21 returns to the original closed position about 2 to 3 seconds after the opening operation. The upper gate damper 6 returns to the open position by the simultaneous operation.

Next, at the charging / pressing station 23,
The compression piston 9 is fast-forwarded by the pneumatic cylinder 25 to compress the grinding dust 42. The compressed drainage liquid is discharged to the outside through the gap, the gap between the cylinder 1 and the piston 9, the discharge hole 5, and the like. When the piston 9 is squeezed and squeezed, the drainage receiver 14 simultaneously rises and receives the squeezed liquid nearby. When the liquid squeezes out after being squeezed to some extent, the squeezing speed is reduced to prevent the drainage of the liquid. The height of the grinding waste after pressing was set to be about 1/3 (50 mm) from the upper opening of the cylinder 1. At the same time, since the drain hole 5 is provided at this 1/3 position, the grinding fluid accumulated below the grinding dust is discharged to the outside from this hole. When the squeezing rate is increased, the strength capability of the entire apparatus must be increased, and the setting was made so that the grinding fluid does not exude from the dewatered grinding dust after the treatment (40%).

The grinding fluid discharged at the charging / squeezing station 23 is a drainage receiver 14 mounted below the piston 9.
Drainage tank (grinding fluid tank) on-site via a drainage recovery hose
And recycle drainage. The discharged liquid discharged by pressing may contain fine grinding dust of several microns. The fine grinding dust is gradually discharged from the discharge port 14a of the waste liquid receiver 14 by operating the press device for a long period of time.
However, since the drain 19 is provided so that the drainage can always flow by the rod 19 that is interlocked with each movement of the squeezing piston 9, the outlet is not clogged.

Next, the squeezing piston 9 is lowered to the lowered position 22, and the cylinder 1 filled with the squeezed grinding debris 42 is placed.
By rotating the rotary shaft 2 180 degrees,
Send to 4. Ejection cylinder 2 at ejection station 24
The pusher 10 is lowered by 6 and the grinding dust 42 is pushed downward from the cylinder 1. At this time, the grinding dust 42 is pressed against the upper part of the crushing jig 13 and crushed. Crushed grinding dust 4
4 is discharged to the recovery bucket 11. The cylinder 1 which has been emptied after discharge is returned to the charging / compressing station 23 by rotating the rotating shaft 2 by 180 degrees in the reverse direction if the compressing stroke is completed at the charging / compressing station 23. In this way, two cylinders 1 are mounted on the concentric circle of one rotary shaft 2, and the liquid is sequentially drained while rotating the rotary shaft 180 degrees forward and backward in one cycle. It was possible to continuously deliquorate quickly. In addition, although the case of the water-soluble liquid is shown in the examples, it can be applied to the oil-based cutting liquid, and it depends on the target grinding liquid, the type and amount of grinding dust, the liquid content (water content, oil content) after pressing, etc. It goes without saying that the size of the cylinder 1, the position of the discharge hole 5, the squeezing amount, the squeezing speed, etc. are appropriately selected.

[0025]

According to the present invention, the upper opening of a cylindrical cylinder having upper and lower openings can be opened and closed by a gate damper, and the compressed piston is squeezed from below the cylinder, and the squeezed drainage is discharged. Since it can be easily collected from the liquid receiver, and the grinding waste can be moved to the next process and discharged from the cylinder while the grinding waste is still contained, the grinding fluid can be easily collected and made compact. .

Since the gate damper receives the squeezing force of the squeezing piston by the base plate, it has a simple and easy structure and good strength can be secured. In addition, since the cylinder can move without resistance, the structure of the entire press machine is simplified. Also, since the squeeze cylinder is provided below, the upper space can be secured, and a fixed amount charging box, hopper, etc. can be easily installed, so charging and compression can be done in one station (position), which saves space. It was Further, it is easy to attach the belt conveyor to the hopper or the like. In addition, once the grinding dust is received by the fixed amount feeding tank and then it is fed into the cylinder, the grinding dust does not overflow from the cylinder.
It became a device with a good working environment. It should be noted that if the inner volume of the fixed amount charging chamber is smaller than the inner volume of the cylinder, it is easy to control. Further, since the pressing process is performed at the two-stage speed, the waste liquid does not spout and scatter around. Moreover, the pressing can be performed efficiently.

Since the squeezing piston can be moved in and out from the lower side of the cylinder, there are provided two places, a charging / squeezing station for discharging and squeezing at the same position, and a discharging station, and a means for moving the cylinder causes the pusher for discharging the grinding dust at the discharging station. Since the grinding debris is collected in the grinding debris collection part by the above, it is possible to provide a press device having a simple structure and high processing capacity. In addition, the entire device can be downsized. For example, the reciprocating rotation of the rotating shaft provided on the base plate enables the loading, squeezing, and discharging, and a structure having a simple structure with less wear and malfunction can be used.

The drainage receiver can be moved up and down at the same time as the squeezing piston, and a rod member that moves in and out of the discharge port by the up and down movement of the piston is provided to prevent scattering of drainage around and clogging of grinding debris. Dirt is reduced and maintenance is easier. Further, since a grinding dust crushing jig is provided at the discharging station so as not to be piled up, the storage amount can be increased.

As described above, in the present invention, the structural arrangement is simple, so that the size is reduced and it is easy to place it on the side of the grinding machine and the arrangement is easy. The squeezed dehydrated liquid can be returned to the grinding liquid tank on the spot and reused, so the amount of grinding liquid used and the amount of waste discharged can be reduced, which is environmentally friendly. According to the example, the amount of the grinding oil used is ½ and the amount of the waste of the grinding waste is ½.
Decreased to. Further, there is no need to worry about bleeding of drainage during storage and transportation of conventional grinding dust, and in addition, there is no need for human labor due to inexpensive and fully automatic operation facilities.

[Brief description of drawings]

FIG. 1 is a schematic view of a pressing device showing an example of an embodiment of the present invention, which is a cross-sectional view taken along the center line XX ′ of FIG.

FIG. 2 is a schematic plan view of a cross section taken along the horizontal line YY ′ of FIG.

[Explanation of symbols]

1 cylinder 1a Upper opening 1b Lower opening 2 Vertical rotation axis 3 base plate 5 Grinding liquid discharge hole 6 Upper gate damper 7 hopper 9 (compressed) piston 10 (for discharging grinding dust) Pusher 11 Grinding waste collection part (collection bucket) 13 Grinding waste crushing jig 14 Drainage receiver 14a outlet 18 Quantitative input 18a Upper opening of fixed quantity feeding box 19 bar (round bar) 21 gate damper 23 Input / Squeeze Station 24 discharge station 40,41,42 Grinding waste

Claims (8)

[Claims] 1. A cylindrical cylinder having an upper opening, a lower opening, and a cylinder having a grinding fluid discharge hole in the middle to the top or in the top, and a cylindrical cylinder into which grinding fluid-containing grinding dust is introduced, and the upper opening. A gate damper that can be opened and closed, a squeezing piston that can enter and exit the lower opening from below the lower opening, and a drain receiver provided below the cylinder and the squeezing piston. And press equipment. 2. The gate damper is provided so as to be able to move in and out between the cylindrical cylinder upper opening portion and a flat base plate provided on an upper portion of the cylindrical cylinder, and the gate damper is provided when the upper opening portion is closed. The press device according to claim 1, wherein the base plate receives an upward force of the base plate. 3. A fixed quantity loading chamber provided on the gate damper when the cylinder is closed, an upper and lower opening, an upper gate damper that opens and closes an upper opening of the fixed quantity feeding box, and an upper opening of the fixed quantity feeding box. 3. A hopper, into which grinding dust containing grinding fluid is introduced, which is provided with an outlet sandwiching the upper gate damper, and a hopper.
The press device described in. 4. The pressing apparatus according to claim 1, wherein the pressing piston has a two-stage speed such that the speed of the pressing piston is slower at the end of pressing than at the start of pressing. 5. A means for moving the cylinder from a charging / compressing station, in which the gate damper and the compression piston are installed, to a discharge station, and a grinding debris recovery unit arranged below the cylinder at the discharge station. 5. The press device according to claim 1, further comprising: a pusher for discharging grinding debris, which is provided in the discharge station, and is capable of moving in and out of the upper opening from above the upper opening. . 6. The press device according to claim 1, wherein two cylinders are provided for the object so as to be horizontally reciprocally rotatable on a concentric circle centered on a vertical rotation axis. . 7. The drainage receiver is vertically movable at the same time as the pressing piston, and the drainage receiver is provided with an outlet for discharging the drainage further below the drainage receiver, and is fixed to the charging / pressing station. 7. The pressing device according to claim 1, further comprising a bar member that is moved in and out of the discharge port by the vertical movement. 8. The pressing device according to claim 1, further comprising a grinding dust crushing jig provided below the cylinder of the discharge station.