JP3040864B2 - Powder supply equipment for refractories - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder supply apparatus for a refractory having a powder storage frame constituted by opening upper and lower surfaces and partitioning the interior into a plurality of powder storage sections.

[0002]

2. Description of the Related Art Conventionally, a shelf plate or a furnace material used in a heating furnace is formed as a compression molded body having a predetermined shape by pressing a refractory powder into a molding die and pressing it.
Now, the refractory powder contains a powder having a particle size of 1000 μm or more at 8% or more, a powder having a particle size of 100 μm or less at 10% or more, and having a water content of 1.0 wt% to 7.0 wt%. Say.

[0003] For compression molding of refractory powder,
There is a device for automatically supplying powder to a powder compression molding device. A schematic configuration of the powder supply device will be described with reference to FIGS. As shown in FIG. 28, the powder storage frame 1 is configured such that upper and lower surfaces are opened and the inside thereof is partitioned into a plurality of powder storage portions 1a. As shown in FIG. 30, the powder storage frame 1 is disposed on a frame slide base 3 below the input hopper 2, and is slid between the position and the molding die 5 by a drive mechanism 4. I am getting it.

The molding die 5 is composed of a frame die 6, a lower die 7 capable of moving back and forth with respect to the cavity 6a thereof, and an upper die 8 capable of moving back and forth from above. When the refractory powder is conveyed into the mold 5, the lower mold 7 is first flush with the upper surface of the frame mold 6 as shown in FIG. 30. Then, the refractory powder is put into the lower powder storage frame 1 from the input hopper 2, and the powder storage frame 1 is slid on the frame slide base 3 to form the frame of the molding die 5. It is moved to above the mold 6. Thus, the powder is conveyed to the frame mold 6.

Thereafter, the lower mold 7 is lowered as shown in FIG. 31 to accommodate the powder in the cavity 6a, and the powder accommodating frame 1 is returned to its original position, as shown in FIG. The upper mold 8 is lowered into the cavity 6a to compress and mold the powder.

[0006]

By the way, the height h is smaller than the equivalent diameter d (which will be described later) obtained from the cross-sectional area of the cross section of the storage section 1a of the powder storage frame 1. When the powder is conveyed using the powder storage frame 1 and stored in the molding die 5, the distribution of the powder stored in the cavity 6a varies widely, and as a result, the compression density distribution of the compression-molded body is reduced. There is a problem of non-uniformity.

The equivalent diameter d is, as shown in FIG.
Assuming that the cross-sectional area of the cross section of the housing portion 1a is S and the peripheral length of the inner surface of the housing portion is L, d = (S × 4) / L.

Conversely, if the height h is considerably higher than the equivalent diameter d of the accommodating portion 1a of the powder accommodating frame 1, if the powder accommodating frame 1 accommodates powder, When the weight density is increased, the powder may be left in the storage portion 1a in a so-called bridge shape when the powder is stored from the powder storage frame 1 into the molding die 5 by natural fall. There is a possibility that the mold 5 cannot be filled.

The present invention has been made in view of the above circumstances, and an object of the present invention is to supply a refractory powder to a mold of a refractory powder molding apparatus by uniformly distributing the refractory powder in a cavity of the mold. An object of the present invention is to provide a powder supply device for refractory that can be supplied in a state and without an amount shortage.

[0010]

According to the present invention, there is provided a powder supply device for a refractory, comprising: a storage section for storing powder for a refractory; a transport mechanism for guiding the powder in the storage section to a charging hopper; A powder accommodating frame having upper and lower surfaces opened and the interior partitioned into a plurality of powder accommodating portions, wherein the powder accommodating frame is located below the input hopper and the powder is contained in the powder accommodating frame. By holding the body and sliding the powder storage frame on the frame slide base to the molding die of the refractory powder molding device,
In the apparatus in which powder is supplied into the cavity of the molding die, the height of the powder storage section is determined by the cross-sectional area of the cross section of the powder storage section. The present invention is characterized in that it is configured to be 0.21 to 1.00 times the diameter (the invention of claim 1).

The storage section includes a fixed hopper, a storage device having an opening at a lower portion, a damper mechanism for opening and closing the opening, and a detachably mounted storage device on the fixed hopper. (The invention of claim 2).

The charging hopper is provided with a leveling mechanism for leveling the powder inside the charging hopper in a substantially horizontal direction.
Invention).

Further, the input hopper is provided with a shutter mechanism for opening and closing the discharge port (the invention of claim 4).

An elastic member is provided at the end of the frame sliding base so as to be interposed between the base and the side of the refractory powder molding apparatus (claim 5).

[0015]

According to the above-mentioned means, the height of the powder container is 0.21 to 1.00 times the equivalent diameter determined from the cross-sectional area of the cross section of the powder container. With this configuration, the powder is conveyed in a state where the weight density per unit area is appropriate, and the powder is uniformly filled in the cavity of the mold without remaining in the storage section.

In this case, the storage unit may be configured to include a fixed hopper, a storage device having an opening in the lower part, a damper mechanism for opening and closing the opening, and being detachably mounted on the fixed hopper. For example, the raw material can be stored by installing a storage device that stores the raw material powder in the fixed hopper, and the raw material can be easily stored as compared with the case where the raw material is carried into the fixed hopper one by one.

Further, if the charging hopper is provided with a leveling mechanism for leveling the powder inside thereof in a substantially horizontal direction,
The weight density distribution of the powder in the charging hopper becomes uniform, which can further contribute to uniform filling in the mold cavity.

Further, if the charging hopper is provided with a shutter mechanism for opening and closing the discharge port, the powder is charged into the charging hopper with the discharge port closed, and thereafter, the powder in the charging hopper is removed. It is possible to cause the powder in a stationary state to fall and be stored in the powder storage frame, so that the falling speed of the powder into the powder storage frame can be reduced and the weight density becomes excessively high. Is prevented.

If an elastic member is provided at the end of the frame sliding base so as to be interposed between the base and the side of the refractory powder molding apparatus, the compression molding apparatus can be used. The generated vibration is not propagated to the supply device side, and therefore, there is no problem that the powder in the storage section or the charging hopper has a high weight density due to the vibration.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 2 schematically shows the entire configuration of a refractory powder molding system. This molding system is roughly divided into a powder supply device 11 for refractories.
, A powder compression molding device 12 for refractories, and a compression molded product unloading device 13. Here, the powder for refractories has a particle size of 1000% or more of 8% or more, and a particle size of 10% or more.
10% or more of powder having a particle size of 0 μm or less and a water content of 1.0 w
It is a powder of t% to 7.0 wt%.

First, the refractory powder supply device 11 will be described with reference to FIGS.

In FIGS. 1 to 3, a storage section 15 for storing refractory powder as a raw material is provided at an upper portion of the frame 14. As shown in FIG. 3, the storage unit 15 includes a fixed hopper 16 and a transferable storage device 17. The fixed hopper 16 is attached to the lower wall 1.
6a and 16a are inclined downward, and a discharge port 16b is formed at the lower end thereof. It is preferable that the inclination angle α of the lower walls 16a, 16a is set within a range of a region Rα shown in FIG.

That is, as can be understood from FIG. 4, when the angle α is increased, the mobility of the powder to the discharge port 6b is deteriorated, and when the moisture content of the powder is large, the viscosity of the powder itself is reduced. Therefore, the mobility of the powder to the discharge port 16b is deteriorated. Therefore, the inclination angle is set in a region Rα between the lines RL and RH in consideration of the moisture content of the powder.

As shown in FIG. 3, the reservoir 17 is detachably mounted on the fixed hopper 16 and has an opening at a lower portion. It is configured to be opened and closed by a damper mechanism 18. The damper mechanism 18 includes damper plates 19 and 20 rotatably attached to the lower ends of the side walls 17a and 17a, and stopper rods 21 fixed to the damper plates 19 and 20.
21, the stopper rod 21 and the leg 17 of the reservoir 17
b.

The storage device 17 is transferred and mounted on the fixed hopper 16 in a state where the raw material powder is stored, and the locking means 22 is removed to remove the damper plates 19, 20.
Is opened, the raw material powder inside falls into the fixed hopper 16 and is stored.

A belt conveyor 23 as a transport mechanism is provided immediately below the fixed hopper 16.
The belt 24 is moved in the direction of arrow A (see FIG. 1). A charging hopper 25 is provided at an end of the belt conveyor 23 on the arrow A side, and a leveling mechanism 26 is provided above the charging hopper 25. 5 is provided on the side wall of the charging hopper 25.
As shown in FIG. 2, a level sensor 25a is provided, and this level sensor 25a detects a powder storage level.

The leveling mechanism 26 is configured as follows. As shown in FIG. 5, a lever 28 is pivotally supported by the mechanism frame 27 so as to be rotatable in a direction indicated by an arrow B.
A rod 29 is attached to the lever 28 so as to extend into the input hopper 25. A comb-shaped leveling member 30 (see FIG. 1) is attached to the tip of the rod 29 substantially horizontally. The lever 28 is configured to reciprocate in the arrow B direction by a link mechanism 32 operated by a motor 31.

In FIG. 1 and FIG.
The discharge port 25b at the lower end of the feeding hopper 25 is opened and closed by a shutter mechanism 33, and the middle part of the input hopper 25 is opened and closed by a shutter mechanism 34 for quantification. The shutter mechanism 33 includes a cylinder 35 attached to a stationary part, and a shutter plate 37 connected to a rod of the cylinder 35 via a connection bar 36 to open and close the discharge port 25b of the input hopper 25. .

The metering shutter mechanism 34 is connected to a cylinder 38 attached to a stationary portion via a connecting bar 39 to a rod of the cylinder 38 so as to be connected to the input hopper 2.
And a shutter plate 40 for opening and closing the middle part of the shutter 5.

As shown in FIG. 1, a powder accommodating frame 42 is mounted on the upper surface of a frame sliding base 41 fixed to the frame 14. Thus, the reciprocating transfer between the lower position of the charging hopper 25 and the upper surfaces of a frame mold 69 and a lower mold 70 of the refractory powder compression molding device 12 described later is performed.

The frame transfer mechanism 43 will be described. The transfer base 44 is disposed on the guide rail 45 so as to be movable in the direction of arrow C and in the opposite direction, and the movable base 44 is driven by a cylinder 46 as shown in FIG. Another cylinder 47 is attached to the moving base 44, and a moving frame 49 is connected to a rod of the cylinder 47 via a lever 48.

As shown in FIG. 7, the moving frame 49 is provided with a holding section 50 for holding the powder accommodating frame 42. The moving frame 49 is provided with an oil case 51 and an oil application roller 52. An oil impregnating member 53 is provided inside the oil case 51, and the oil case 51 is moved by a cylinder 54 disposed at the rear end (the left end in the drawing) of the moving frame 49 through an arrow via a connecting bar 55. It is moved in the direction D and the opposite direction. The oil application roller 52 includes a lever 56
The lever 56 is turned by the operation of a cylinder 57 disposed at the rear end of the moving frame 49.

As shown in FIG. 8, the powder accommodating frame 42 is formed by partitioning the inside of a frame main body 58 whose upper and lower surfaces are opened by a plurality of partition plates 59. An accommodating section 60 is formed. This powder storage frame 4
2, the height Sh is 0.21 with respect to the equivalent diameter Sd obtained from the cross-sectional area of the cross section of the powder container 60.
It is set to be １．０1.00.

The equivalent diameter Sd is, as shown in FIG.
Assuming that the cross-sectional area of the transverse section of the housing section 60 is Ss, and the circumferential length of the inner surface of the housing section is Sr, Sd = (Ss × 4) / Sr.

While keeping such a dimensional relationship, it is preferable to set the height Sh in the range of 15 to 100 mm and the width Sb in the range of 20 to 80 mm.

As shown in FIG. 10, the end of the frame slide base 41 has an elasticity so as to be interposed between the frame slide base 41 and the plate 73 on the compression molding device 12 side. A member such as rubber 61 is provided. In this case, rubber 61
Is flush with the frame slide base 41.

Next, the powder compression molding apparatus 12 for refractories will be described.

First, as shown in FIG. 2, a soundproof cover 62a is provided on the frame 62 so as to enclose the entire device. However, a portion of the refractory powder supply device 11 on the powder storage frame 42 side is provided. Then, the portion on the suction mechanism 108 side of the compression molded body unloading device 13 is open. The opening 62 b on the powder storage frame 42 side is opened and closed by a shutter plate 64 that is moved up and down by a cylinder 63.

The opening 62c of the compression molded body discharging device 13 on the suction mechanism 108 side is opened and closed by a shutter plate 66 which is moved up and down by a cylinder 65. Further, an air vent duct 67 is provided above the cover 62a, and the air vent duct 67 communicates with the outside.

In FIG. 11, a molding die 68 is a frame die 69
And a lower mold 70 and an upper mold 71, which are formed of a wear-resistant material, for example, SKD11 of alloy tool steel. First, the mounting configuration of the frame die 69 and the elevating mechanism of the lower die 70 will be described.

The frame mold 69 has a mounting plate 72 at the lower part and a frame sliding plate 73 on the upper surface. The frame mold 69 is mounted on the frame 62 by disposing the mounting plate 72 on the mounting rollers 74 a of the mounting bracket 74 of the frame 62 and fixing the mounting plate 72 with a hydraulic clamp 75. The plate 73 is connected to the end of the frame slide base 41 via the rubber 61. The lower die 70 is provided on the frame die 69 so that the lower die 70 is guided by a guide plate 76 provided on a mounting plate 72 and a rod 70b penetrating therethrough. The lifting and lowering is controlled by 77.

The lifting mechanism 77 will be described. That is, the first lower movable base 79 is provided on the lower base 78 of the frame 62 so as to be vertically movable via the rod 80 and the bearing 80a.
Is moved up and down by the operation of the cylinder 81. The lower limit position of the first lower movable base 79 is determined by the upper end positions of a plurality of jacks 82 receiving the lower surface of the movable base 79, and the jack 82 is adjusted in height. It is possible. The purpose of adjusting the lower limit position of the first lower movable base 79 is as follows.
The purpose is to adjust the lower limit position of the lower mold 70 to adjust the thickness of the compression molded body.

The upper limit position of the first lower movable base 79 is determined by a stopper nut 84 attached to the upper end of the fixed rod 83. Therefore, the first lower movable base 79 moves up and down in the range of the stroke SL.

On the first lower movable base 79, a second lower movable base 85 is connected with a connecting rod 86 and a vibration adjusting member 87.
And the second lower movable base 85
Is adapted to move up and down integrally with the first lower movable base. The connection configuration of the vibration adjusting member 87 is shown in FIG. As shown in FIG. 13, end plates 87a and 87b are fixed to the upper and lower surfaces of the vibration adjusting member 87, and a bolt 88 fixed to the end plate 87b is screwed to a connecting rod 86, and is fixed to the end plate 87a. The fixed bolt 89 is fastened to a holder 90 with a nut, and the holder 90 is fixed to a second lower movable base 85. The spring constant of the vibration adjusting member 87 is 500 to 25000 kg / cm.
Is set within the range.

A plurality of, for example, six vibration generators 91 are mounted on the lower surface of the second lower movable base 85. The vibration generator 91 receives compressed air and generates vibration. However, the vibration generator may be one that generates vibration by hydraulic pressure or electric power. FIG. 12 shows an example of the arrangement of the vibration generator 91 and the like. An air spring 92 is provided at a position directly below each of the vibration generators 91 on the first lower movable base 79 so as to receive and support the lower end thereof.
The lower mold 70 is mounted on the upper surface of the second lower movable base 85 via a lower mold holding base 70a and a rod 70b.

Next, the lifting mechanism 93 of the upper die 71 will be described with reference to FIG.

An elevating cylinder 95 is mounted on the upper base 94 of the frame 62.
The first upper movable base 96 is attached to the rod No. 5 via a bracket 95a. The first upper movable base 96 is provided with, for example, four pressurizing cylinders 97 composed of air cylinders. FIG. 15 shows an example of the arrangement. A second upper movable base 98 is fixed to a rod of the pressure cylinder 97.

A guide bar 99 penetrating the upper base 94 and the first upper movable base 96 is connected to the second upper movable base 98. Further, an upper die mounting base 102 is connected to the second upper movable base 98 via a connecting rod 100 and a vibration adjusting member 101. The connection configuration of the vibration adjusting member 101 is the same as that shown in FIG.
3 and the spring constant of the vibration adjusting member 101 is also 500 to 25000 kg / cm.
Is set within the range.

On the upper surface of the upper die mounting base 102, for example, six vibration generators 103 are mounted (see FIG. 16), and this vibration generator 103 supplies compressed air similarly to the vibration generator 91. The vibration is generated by receiving the vibration. In this case, a hydraulic or electric vibration generator may be used.

Next, the compression molded article discharging device 13 will be described.

In FIG. 2, a roller conveyor 105 is provided on a frame 104, and a bracket 106 is provided above the roller conveyor 105 so as to be movable in the direction of arrow F and in the direction opposite thereto. The support frame 1 is attached to the bracket 106.
07 is mounted so as to be movable in the up and down direction (the direction of arrow G and the opposite direction).
, And can be tilted and rotated in the direction of arrow H.

The support frame 107 is provided with a suction mechanism 108. That is, as shown in FIG.
A suction box 109 in the shape of a hollow flat box is attached to the frame 107a of the unit 107 via a fixture (not shown). A plurality of suction holes 110 are formed in a lower plate portion 109a of the suction chamber 109. This intake hole 11
In the case of 0, it is preferable that the diameter is in the range of 2 to 10 mm.
It is preferable to set it to 0 to 15 mm. The inside of the suction chamber 109 is suctioned by a suction pump (not shown).

A cushion member 111 made of, for example, sponge, which is permeable and flexible, is attached to the lower surface of the adsorption chamber 109, and a sheet 112 is attached to a peripheral surface of the cushion member 111. Thus, intake from the surrounding surface is blocked.

The frame 107a is provided with a required number of air cylinders 113 serving as a lifting mechanism. At the end of the rod of the air cylinder 113, a pressing member 114 which comes into contact with the upper surface of the frame 69, ie, the upper surface of the plate 73, is attached. Have been. The vertical movement of the support frame 107 is shown in FIG.
Is performed by a cylinder 115 shown in FIG.

Each time a compact is carried out, a transport plate 116 for placing the compact on the roller conveyor 105 is arranged at appropriate times and is moved in the direction of the arrow I. Is a weight measuring device 11
7 and a thickness measuring device 118 are provided. Further, at the end side in the direction of the arrow I, a molded body stacking device 119
Is provided. The weight measuring device 117 measures the weight of the compact, and the thickness measuring device 118 includes a contact displacement meter or a laser displacement meter, and measures the thickness of the compact. In addition, the stacked body stacking device 119 lifts and transports the entire transport plate 116.

Now, the operation of the present embodiment configured as described above will be described.

When the belt conveyor 23 is driven, the powder is charged into the charging hopper 25. In this case, as shown in FIG. 5, in the input hopper 25, the shutter mechanism 33 has the shutter plate 37 closed, and the quantitative shutter mechanism 34 has the shutter plate 40 opened.
The belt conveyor 23 is stopped when the level sensor 25a performs a detecting operation in accordance with the powder input, that is, when the powder storage level reaches the reference level. As a result, a predetermined amount of the powder is charged into the charging hopper 25. At this time, the coarse particles of the powder are biased outward, so that the powder is slightly mountain-shaped as shown by a two-dot chain line in FIG.

When the raw material is being supplied to the charging hopper 25, the motor 31 of the leveling mechanism 26 is driven, and the rod 29 is reciprocated. Thereby, the powder in the charging hopper 25 is leveled. When the cylinder 38 of the metering shutter mechanism 34 is driven, the shutter plate 40 is moved in the closing direction, and the middle part of the input hopper 25 is closed. This shutter plate 40
And the lower shutter plate 37 determine the amount of powder required for approximately one molded body production.

Next, when the cylinder 35 of the shutter mechanism 33 is driven, the shutter plate 37 moves in the opening direction, and the discharge port 25b of the input hopper 25 is opened. Thus, the powder is dropped and stored in the powder storage frame 42 located immediately below the discharge port 25b according to the opening area of the discharge port 25b. In this state, the oil case 5
1 is at a position shown by a two-dot chain line in FIG. 1, and the oil application roller 52 is at a position rotated downward as shown by a two-dot chain line.

Thereafter, the powder accommodating frame 42 is moved to the frame transport mechanism 43.
Of the moving base 44 and the moving frame 49 are integrally moved to the compression molding device 12 side.
During this movement, the powder storage frame 42 slides on the frame slide base 41, the plate 73 and the lower mold 70. In this folding, the powder in the charging hopper 25 is sequentially dropped and stored in the powder storage frame 42. Also, during this movement, the oil application roller 52 is moved ahead of the powder housing frame 42 by the upper surface of the frame sliding base 41 and the plate 7.
Oil is applied to the upper surface of the lower mold 3 and the upper surface of the lower mold 70, thereby reducing the sliding resistance of each part, preventing the powder from adhering, and improving the powder transportability.

With the above movement, the powder containing frame 42 is
9 on the plate 73. This state is shown in FIG. 6 and FIG. In this state, the moving frame 49 is reciprocated in the direction indicated by the arrow J in FIG. 18 by driving the rod of the cylinder 47 so as to be moved in and out a plurality of times, whereby the powder storage frame 42 is reciprocated. Thereby, the movement of the powder in each powder storage unit 60 of the powder storage frame 42 is given, and the weight density distribution becomes uniform.

At the same time as the powder accommodating frame 42 reciprocates,
Thereafter, the lower die 70 is lowered from the state of FIG. 18 to the position shown in FIG. 19 by the lowering operation of the cylinder 81, and the oil application roller 52 is moved based on the operation of the cylinder 57 in FIG.
Is rotated upward as indicated by the two-dot chain line. Then, the moving frame 49 is returned to the original position. At the time of this return, the oil application roller 52 slides on the lower surface of the upper die 71 to apply oil to the lower surface of the upper die 71. When the moving frame 49 returns to the original position, the oil application roller 52 and the oil case 5
1 is controlled so as to be in the state shown by the solid line in FIG.
Further, the shutter plates 64 and 66 are closed.

At this time, the compression molding device 12 is in a state shown in FIG. Then, in this state, the vibration generator 91 is driven to vibrate the lower mold 70 for a certain time. With this,
The powder contained in the cavity 69a of the frame mold 69 is uniformly distributed and its density is uniformly increased.

Thereafter, the upper mold 71 enters the cavity 69a based on the lowering operation of the lifting cylinder 95, and presses the powder. In this case, the pressurizing cylinder 97 operates to apply a constraint pressure of approximately 0.1 to 50.0 kg / cm ² to the powder (see FIG. 21).

Thereafter, the lower vibration generator 91 and the upper vibration generator 103 receive the supply of the compressed air to generate vibrations, and apply vibrations to the lower mold 70 and the upper mold 71.

Here, since the upper mold 71 is pressurized by the pressurizing cylinder 97 composed of an air cylinder, vibration is allowed in a state where the lower mold 70 and the upper mold 71 are appropriately pressurized. Thus, the powder is compression molded. That is, if the upper die 71 is pressed by the lifting cylinder 95 composed of a hydraulic cylinder without the pressurizing cylinder 97, there is a possibility that a problem that vibration is suppressed may occur. Such a defect does not occur, and the vibration works well on the powder.

At this time, the lower die 70 is supported via the vibration adjusting member 87 and the upper die 71 is supported (suspended) via the vibration adjusting member 101.
The vibration generated by each of the vibration generators 91 and 103 is transmitted to the lower die 70 and the upper die 71. In this case, by setting the spring constants in the range of 500 to 25000 kg / cm, the vibration is appropriately transmitted to the lower mold 70 and the upper mold 71.

When such vibration is generated, noise is generated by the vibration sound. However, since the entire compression molding device 12 is surrounded by the soundproof cover 62a and the shutter plates 64 and 66, external leakage of noise is minimized. Can be suppressed. In this case, in the compression molding device 12, the vibration generator 91,
A large amount of compressed air is supplied to 103, and this air is discharged outside from the air vent duct 67.

When the compression molding is completed, as shown in FIG. 22, the upper mold 71 is raised to the original position and
0 rises to the position shown in FIG.
Knock out from 9. After this knock-out, the shutters 64 and 66 are raised, and the suction mechanism 108 of the compression-molded-body unloading device 13 moves the molded body M as shown by a two-dot chain line in FIG.
Entering upwards. Then, the suction mechanism 108 descends, but since the suction chamber 109 is only received and supported by the support frame 107, the suction chamber 109 is put on the compression molded body M as shown in FIG.
The cylinder 113 of the support frame 107 comes into contact with the upper surface of the plate 73 and stops. As a result, only the weight of the suction chamber 109 and the suction member 111 is applied to the compression molded body M, and the entire weight of the suction mechanism 108 including the support frame 107 is not applied. Therefore, there is no possibility that the compression molded body M is lost.

Thereafter, the suction operation is performed and the compression molding M
Is sucked, and in this state, the cylinder 113 causes the rod to protrude downward (see FIG. 24). As a result, the frame 107 a rises by the operation stroke of the cylinder 113, whereby the compression molded body M in the suction state in the suction chamber 109 is released from the lower mold 70. After this release, the support frame 107 rises, and the roller conveyor 1
It will be moved in the 05 direction.

The support frame 107 is mounted on the roller conveyor 105.
As shown in FIG. 25, the support frame 107 is tilted about the axis P in the direction indicated by the arrow H. With this,
The back side of the compression molded body M faces the worker side,
The operator determines the quality of the molding state on the back side. When the tilting operation for this determination is performed for a predetermined time, the support frame 1
07 is returned to the original horizontal state, and then lowered, the compression molded body M is placed on the transport plate 116, and the suction operation is stopped.

Thereafter, the transport plate 116 is moved in the direction of arrow I by driving the roller conveyor 105, the weight of the compression molded body M is measured by the weight measuring device 117, and the compression molded body M is measured by the thickness measuring device 118. M
Is measured. These measurement data are stored as manufacturing management data. Thereafter, the compact M is guided to below the compact stacking device 119, and the compact M is lifted together with the transport plate 116 by the compact stacking device 119, transported to the stacking location, and stacked.

According to this embodiment, the following effects can be obtained.

As shown in FIGS. 8 and 9, the height Sh of the powder storage section 60 is set to 0.21 to 1.00 of the equivalent diameter Sd of the powder storage section 60. By configuring so that the weight is doubled, the powder is conveyed to the compression molding device 12 side in an appropriate weight density per unit area, and the powder does not remain in the storage unit 60, That is, the cavity 69a of the molding die 68 does not become short.
Can be uniformly filled.

Table 1 shows experimental data on compression molded articles of various sizes.

[0076]

[Table 1] In this experiment, the compression-molded body was fired at, for example, 1400 ° C. for a predetermined time to produce a fired body having the size shown in Table 1, and this fired body T was divided into, for example, nine as shown in FIG. These were used as test pieces P.

In the table, “Sa” and “Sb” are the length and width dimensions of the powder container, “Sh” is the height dimension, and “ratio (γ)” is the ratio of the equivalent diameters Sd and Sh ( γ = Sh / S
d) is shown. “Variation” indicates variation in density. That is, the minimum density is subtracted from the maximum density of each test piece Tp. "O" in "Evaluation" is evaluated as good when the variation in density is 0.1 or less, and "x" is evaluated as poor when the variation in density is greater than 0.1.

As can be seen from Table 1, the powder container 6
The height Sh is 0.21 to 1.0 with respect to the equivalent diameter Sd of 0.
If it is within the range of 0 times, the variation in the density is small. In other words, it can be seen that the powder can be uniformly filled into the cavity 69a of the molding die 68 without an insufficient amount. "Sa" in Table 2 indicates one side dimension of the powder container as shown in FIG.

In particular, according to the present embodiment, the storage section 15 is detachably mounted on the fixed hopper 16 with the fixed hopper 16 and the damper mechanism 18 having an opening at the bottom and opening and closing the opening. Since the storage device 17 and the storage device 17 are provided, the raw material can be stored by installing the storage device 17 containing the raw material powder in the fixed hopper 16, and the raw material is carried into the fixed hopper 16 one by one. As compared with the case, raw material storage becomes easier.

Further, since the charging hopper 25 is provided with the leveling mechanism 26 for leveling the powder in the horizontal direction, the particle size distribution of the powder can be made uniform, and the weight of the powder in the charging hopper 25 can be reduced. The density distribution becomes uniform, and the cavity 6
9a can be further contributed to uniform filling.

Further, since the input hopper 25 is provided with the shutter mechanism 33 for opening and closing the discharge port 25b, the powder is input into the input hopper 25 with the discharge port 25a closed, and thereafter, It is possible to cause the powder in the stationary state in the charging hopper 25 to fall into the powder storage frame 42. Therefore, the falling speed of the powder into the powder storage frame 42 can be reduced, and the weight density can be reduced. It can be prevented from becoming excessively high. As a result, when the powder in the powder storage frame 42 is dropped and stored in the cavity 69a, the powder does not remain in the powder storage frame 42 in a so-called bridge shape.

A rubber 61 as an elastic member is provided at an end of the frame sliding base 41 so as to be interposed between the base 41 and the refractory powder compression molding apparatus 12 side. The vibration generated in the compression molding device 12 is
1 is not propagated to the storage unit 15 and the input hopper 2
There is no such a problem that the powder in 5 has a high weight density due to vibration, that is, becomes hard.

In the above embodiment, the powder accommodating frame 42 having a rectangular shape was exemplified as the shape of the powder accommodating portion of the powder accommodating frame. However, as shown in FIG. Powder housing frame 1 in which body housing section 120 has a honeycomb shape
It may be 21. Also in this case, the height Sh is set to 0.21 to the equivalent diameter Sd of the powder container 120.
What is necessary is just to comprise so that it may become 1.00 times.

Table 2 shows experimental data obtained when the honeycomb-shaped powder storage frame 121 was used.

[0085]

[Table 2] As can be seen from Table 2, when the height Sh is in the range of 0.21 to 1.00 times the equivalent diameter Sd of the powder container 120, the variation in density is small. In other words, as in the case of the above-described embodiment, it can be seen that the powder can be uniformly filled in the cavity of the mold without shortage.

In addition, the present invention is not limited to the above embodiments, and can be implemented with various modifications without departing from the gist.

[0087]

As apparent from the above description, the present invention has the following effects.

According to the first aspect of the present invention, the powder accommodating frame is
Since the height of the powder container is configured to be in a range of 0.21 to 1.00 times the equivalent diameter of the powder container, the powder has an appropriate weight density per unit area. In this state, the powder is conveyed to the compression molding apparatus, and as a result, the powder can be uniformly filled in the cavity of the molding die without leaving the powder in the powder storage frame.

According to the second aspect of the present invention, the storage portion includes a fixed hopper, a storage device having an opening in the lower portion, and having a damper mechanism for opening and closing the opening, which is detachably installed in the fixed hopper. , The raw material storage becomes easier as compared with the case where the raw material is carried into the fixed hopper one by one.

According to the third aspect of the present invention, the charging hopper
Since a leveling mechanism is provided to level the powder inside in a substantially horizontal direction, the particle size distribution of the powder can be made uniform, the weight density distribution of the powder in the input hopper can be made uniform, and the molding die This can further contribute to uniform filling of the cavity.

According to the fourth aspect of the present invention, since the input hopper is provided with the shutter mechanism for opening and closing the discharge port, the weight density becomes excessively high when the powder is stored in the powder storage frame. This can be prevented, and the powder does not remain in the powder storage frame when the powder is stored in the mold cavity from the powder storage frame.

According to the fifth aspect of the present invention, an elastic member is provided at the end of the frame sliding base so as to be interposed between the base and the side of the compression molding apparatus for refractory powder. Therefore, it is possible to reduce the propagation of the vibration generated in the compression molding apparatus to the side of the supply apparatus. Therefore, the powder in the storage section or the input hopper has a high weight density due to the vibration, that is, the powder becomes hard. Occurrence can be suppressed.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional front view of a main part showing one embodiment of the present invention.

FIG. 2 is a partially broken front view showing the entire configuration of the molding system.

FIG. 3 is a longitudinal sectional side view of a storage section.

FIG. 4 is a diagram showing a preferable inclination angle range of the hopper angle with respect to the water content of the powder.

FIG. 5 is a vertical sectional side view of a charging hopper portion.

FIG. 6 is a diagram corresponding to FIG. 1 for explaining operation;

FIG. 7 is a longitudinal sectional front view of drive components of an oil case and an oil application roller.

FIG. 8 is a perspective view of a powder storage frame.

FIG. 9 is a plan view of a powder container portion for explaining an equivalent diameter.

FIG. 10 is a longitudinal sectional front view showing an end portion of a frame sliding base.

FIG. 11 is a longitudinal sectional front view mainly showing a lower die elevating mechanism part.

FIG. 12 is a cross-sectional plan view taken along the line TT in FIG. 11;

FIG. 13 is a longitudinal sectional view of a vibration adjusting member.

FIG. 14 is a longitudinal sectional front view mainly showing an upper die lifting mechanism part;

FIG. 15 is a cross-sectional plan view taken along the line UU in FIG. 14;

FIG. 16 is a cross-sectional plan view taken along the line VV in FIG. 14;

FIG. 17 is a longitudinal sectional front view of a suction mechanism portion.

FIG. 18 is a longitudinal sectional front view of a molding die portion for explaining operation.

FIG. 19 is a longitudinal sectional front view of the same.

FIG. 20 is a longitudinal sectional front view of the same.

FIG. 21 is a longitudinal sectional front view of the same.

FIG. 22 is a longitudinal sectional front view of the same.

FIG. 23 is a longitudinal sectional front view of the same.

FIG. 24 is a longitudinal sectional front view of the same.

FIG. 25 is a front view of a suction mechanism portion for describing an operation.

FIG. 26 is a perspective view of a fired body used in the experiment.

FIG. 27 is a perspective view of a powder storage frame showing another embodiment of the present invention.

FIG. 28 is a perspective view of a powder storage frame showing a conventional example.

FIG. 29 is a plan view of a powder container portion for explaining an equivalent diameter.

FIG. 30 is a longitudinal sectional front view showing a schematic configuration.

FIG. 31 is a longitudinal sectional front view of the same.

FIG. 32 is a longitudinal sectional front view of the same.

[Explanation of symbols]

11 is a powder supply device for refractories, 12 is a powder compression molding device for refractories, 13 is a compression molded product unloading device, 15 is a storage unit,
16 is a fixed hopper, 17 is a reservoir, 18 is a damper mechanism,
23 is a belt conveyor (transport device), 25 is a loading hopper, 25b is a discharge port, 26 is a leveling mechanism, 33 is a shutter mechanism, 34 is a metering shutter mechanism, 41 is a frame sliding base,
42 is a powder storage frame, 43 is a frame transfer mechanism, 60 is a storage section,
61 is a rubber (elastic member), 68 is a mold, 69 is a frame,
69a is a cavity, 70 is an upper mold, and 71 is a lower mold.

Continuation of the front page (72) Minoru Yamamoto 4671 Maesawa, Mitake-cho, Kani-gun, Gifu Prefecture (72) Inventor Masatada Uematsu 7112, Kaminosato, Mitake-cho, Kani-gun, Gifu Prefecture 9 (56) References JP-A-3-69311 (JP, A) JP-A-60-166406 (JP, A) JP-A-4-282204 (JP, A) JP-A-3-90906 (JP, U) JP-A-62-146598 (JP, U) 54-35758 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B28B 13/02

Claims (5)

(57) [Claims] 1. A storage section for storing powder for refractories, a transport mechanism for guiding the powder in the storage section to a charging hopper, and an upper and lower surface opened to be partitioned into a plurality of powder storage sections. A powder accommodating frame configured to contain powder in the powder accommodating frame by positioning the powder accommodating frame below the input hopper. The powder is supplied to the cavity of the molding die by sliding the table to move to the molding die of the refractory powder molding device. A powder supply for refractory, characterized in that the height of the body container is configured to be 0.21 to 1.00 times the equivalent diameter obtained from the cross-sectional area of the cross section of the powder container. apparatus. 2. The storage section includes a fixed hopper, and a storage device having an opening at a lower portion and having a damper mechanism for opening and closing the opening and removably installed on the fixed hopper. The powder supply device for a refractory according to claim 1, wherein: 3. The powder supply apparatus for refractories according to claim 1, wherein the charging hopper is provided with a leveling mechanism for leveling the powder inside the charging hopper in a substantially horizontal direction. 4. The powder supply apparatus for refractories according to claim 1, further comprising a shutter mechanism for opening and closing a discharge port of the charging hopper. 5. An elastic member is provided at an end of the frame sliding base so as to be interposed between the base and the side of the powder compression molding apparatus for refractories. 2. The powder supply device for refractories according to claim 1.