JPH0123437B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a glazing machine that applies glaze to objects to be glazed, such as tableware such as plates and architectural ceramic products such as tiles, and in particular, relates to a glazing machine that applies glaze to objects to be glazed, such as tableware such as plates and architectural ceramic products such as tiles. The present invention relates to a glazing machine capable of applying a glaze by uniformly scattering the mist into a bundle onto the object to be glazed.

[Prior art] Traditionally, methods such as dipping, spraying, pouring, and painting have been used to glaze pottery, but all of these methods have not been suitable for recent mass production methods due to the speed of glazing, uneven glaze thickness, and economic efficiency. There were problems with this, making it difficult for people to get used to it.

In addition, various glaze scattering devices have been proposed in which the glaze is then sprayed using a spray nozzle.
Since this injection method uses high-pressure air, there is a large amount of air mixed in, and the scattering range still extends radially from the nozzle, so a large amount of glaze is used and recovery is difficult. Furthermore, if the nozzle is clogged, it may not be completely atomized, which tends to cause uneven glaze thickness, and as mentioned above, the glaze is scattered over a wide area, requiring large-scale auxiliary equipment such as dust collectors. It ended up having various defects such as.

In view of the above, in recent years, for example, the inventor of the present invention has developed a patent application filed in 1983 to replace the spray method by glazing objects to be glazed, such as tableware such as plates and architectural ceramic products such as tiles. 169270 (Refer to Japanese Patent Publication No. 62-30156) Diffusion using a plurality of disc bodies arranged at predetermined intervals to rotate as one around a cylinder into which glaze is introduced and suction holes are arranged. By rotating the roller body and using the negative pressure generated when the air between the respective disc bodies is blown outward by centrifugal force, the glaze sucked out from the suction holes is turned into a mist by the external centrifugal force, and is then covered with We proposed a glaze scattering device for use in pottery glazing machines, which is characterized by uniformly scattering glaze onto the surface of glazed pottery, and published Utility Application No. 56-77052 (Jikkosho
No. 61-4488), a group of donut-shaped disks in which a plurality of donut-shaped disks are overlapped and connected by forming gaps of appropriate dimensions between adjacent donut-shaped disks is connected to the rotating shaft. a rotating disk body fixedly attached to the tip side; a liquid feeding pipe for supplying glaze to a hollow portion formed in the center of the donut-shaped disk group;
There have been proposals for a roof tile glaze applicator characterized by a coating chamber having a wall surface covering a suitable location on the outer periphery of the group of donut-shaped disks. Since the glaze is scattered through the gaps, improvements are still required depending on the object to be glazed.

[Problems to be solved by the invention] Therefore, the invention, which the inventor of the present application previously filed as Japanese Patent Application No. 169270/1983, claims that the conventional injection method
This is an epoch-making technique that reduces the loss of glaze from 40% to about 10% at once.As mentioned above, this is done by arranging a large number of discs in parallel and using the gaps between them to reduce the loss of glaze. Since the glaze is applied, the glaze lacks uniformity, so in addition to this, the inventor of the present invention created a mist in the form of extremely fine mist bundles and with appropriate changes to achieve uniform glaze application. This is a glazing machine that was developed.

[Means for Solving the Problems] Therefore, the present invention provides a method in which a large number of fine holes are formed through the outer periphery of a tubular supply pipe, which is formed by arranging through holes that can introduce and supply glaze. At least one cylindrical dispersion barrel is rotatably disposed on the outer periphery of the supply pipe with a cylindrical gap, and the dispersion barrel is rotated along the conveyance path of the glazed material. A glazing machine is provided, characterized in that the glaze is formed into a mist by the negative pressure generated in the gap and the centrifugal force applied to the dispensing cylinder so that it can be scattered onto the object to be glazed, and the above-mentioned problem can be solved. This solves the problem.

[Function] The present invention constituted by the above-mentioned means provides at least a glazing machine with passage openings at the front and back so that the glazed pottery can pass through at least across the glazed pottery transport path. Place two scatterers. Afterwards,
Glaze is introduced into each of the scattering supply pipes and the dispersion cylinder is rotated, and the introduced glaze is supplied from the perforated rows of the supply pipes to the inner wall of the rotating dispersion cylinder, where it is instantaneously pulverized into a fine mist by centrifugal force. Ru.

Next, the mist is dispersed uniformly over the entire surface of the pottery to be glazed in the form of a bundle of mist through the many fine holes in the dispersion cylinder. At this time, the individual mist powders that make up the fog bundle are constantly under negative pressure in the gap in the space formed between the supply pipe and the spray cylinder due to the centrifugal force that accompanies the rotation of the spray cylinder. The supplied glaze is in a state where it is easy to split and is crushed by colliding with the inner wall of the spraying cylinder, and is further sucked out by the negative pressure airflow flowing out at high speed from the micropores, becoming an ultrafine mist bundle, and forming a fine mist bundle. It will no longer be boring.

[Example] Next, an example of the present invention will be described with reference to FIGS. 1 to 3.

As shown in FIG. 1, the scattering machine 1 includes a supply pipe 11 into which an appropriate amount of glaze is introduced, and a dispersion cylinder 12 that is rotatable with a gap around the supply pipe 11.
and a drive body 13 that transmits rotational force to the dispersion cylinder 12.
Consisted of.

The dispersing cylinder 12 has two supports 121a and 12
1b, an outer scattering barrel 122a and an inner scattering barrel 122b.
It is formed by sandwiching it concentrically from both sides. The support body 121a has one end receiving a rotational force from a driving body 13 which is eccentrically arranged as will be described later.
A small diameter end with a keyway 121k for fixing the V-pulley 131 to be transmitted to the dispersion tube 12, and a convex cross-sectional shape with the other end having a large diameter to support the outer dispersion tube 122a. The other support body 121b has a large diameter portion having substantially the same shape as the support body 121a. Note that both support bodies 121a and 121
The large diameter portion b has a plurality of bolt holes 121 into which bolts 124a, which will be described later, are inserted through the support plate.
h... are drilled at equal intervals on the same circumference. The outer dispersion tube 122b is made of two large and small cylindrical pieces made of fine wire mesh or the like cut to a length slightly longer than the length between the front and rear ends of a row of through holes arranged in the supply pipe 11, which will be described later. , two support plates 12 in which concentric circular support grooves 123d having the same diameter as the respective ends are bored in order to prevent eccentric deformation at both ends of each of the support plates 12.
3,123 to maintain a concentric two-layered state. Furthermore, the support plate 123,
123 is fixed to the bearings 121a, 121b, and has an outer dispersion cylinder 122a and an inner dispersion cylinder 122.
Bolt hole 123 into which the bolt 124a should be inserted to maintain the concentric two-layer state of b and prevent crushing.
A plurality of holes h are bored at equal intervals between the two concentric support grooves 123d, and the bolt holes 12
3h and the supporting bodies 121a and 121b.
All of the bolt holes 121h drilled in the large diameter portion of the bolt are drilled so as to completely correspond to each other. Therefore, after inserting the bolts 124a inserted between the outer dispersing cylinder 122a and the middle dispersing cylinder 122b into the bolt holes 123h of the supporting plates 123, 123, the supporting body 121
Insert into the bolt holes 121h... of a and 121b,
The outer scattering tube 122a and the middle scattering tube 122b are completely fitted into the support plate 123d, and the nuts 124b...
If screwed on, the dispersing cylinder 12 becomes one piece.

Next, the supply pipe 11 has a predetermined diameter and a predetermined number of through holes 111 through which the glaze should be supplied, arranged in rows at predetermined intervals in the axial direction, and the length between the front and rear ends is equal to the above-mentioned outer dispersion. It is slightly shorter than the cylinder 122a to prevent the supplied glaze from directly leaking out of the scatterer 1. Furthermore, the supply pipe 11
is a cylinder longer than the entire length of the dispersion cylinder 12, and has elbows 1 at both ends for connecting to the glaze tank side.
4 and a male screw 11m for screwing in an on-off valve 15 for adjusting the amount of glaze supplied and for discharging and recovering the glaze remaining in the pipe after glazing.

Next, a second explanation will be given regarding the assembly of the scattering machine 1 formed as described above into the glazing machine A as a main component.
This will be explained according to the drawings and FIG.

Glazing machine A has a scattering device 1 inside the casing AC.
a, a conveyor 2, and a rotation imparting mechanism 3.
The casing AC has the external shape of a flying box for floor gymnastics,
In addition, in the front and rear walls Wf and Wr facing each other, support holes Wh having a diameter to allow the support bodies 121a and 121b to be inserted are bored at positions corresponding to the vertices of the triangles facing each other, and Place the mounting table 25 on the support column 24 between the three support holes Wh...
To, place the pottery P to be glazed and open the passageway T so that it can pass through.
T is opened to face directly. Note that a mounting shelf 132s for the motor 132 of the drive body 13 mentioned above is protrudingly provided on the rear wall Wr at a position that does not come in close contact with the support hole Wh and the passageway T, and furthermore, the front and rear wall Wf,
Three bearing holes Wh are drilled in each of Wr...The supporting bodies 121a and 12 are respectively inserted into the lower part.
A supporting stand 121s for holding a bearing 121c rotatably supporting the shaft 1b is protrudingly provided, and a bracket for supporting the supply pipe 11 through the support hole Wh is provided at the upper part of the supporting hole Wh. 11b is provided protrudingly. The depth of the casing AC is the same as the supply pipe 11.
It's shorter.

The scattering device 1a is located on the front and rear walls Wf of the casing AC.
It is constructed by assembling the scattering machine 1 into three bearing holes Wh... drilled in each of Wr and Wr. After assembly, the motor 132 is placed on each of the mounting shelves 132s protruding from the rear wall Wr of the casing AC, and the shaft end is made to protrude into the casing AC.
The pulley 133 is fixed. And V-belt 134
The V-pulley 133 and the V-pulley 131 are connected. Then, each of the three supply pipes 11 protruding from the front wall Wf of the casing AC has an elbow 1.
4 are screwed together, and connected using hoses H to glaze tanks Y, which are arranged at the upper part and are intended to pump glaze into the supply pipe 11 by a drop. Further, the glaze tank Y is equipped with a float or the like (not shown) to keep the glaze liquid level constant, and the pressure of the glaze to be pumped into the supply pipe 11 is kept constant.

Further, on-off valves 15 are respectively screwed onto the three supply pipes 11 protruding from the rear wall portion Wr. At this time, it is necessary that the through holes 111 of the supply pipe 11 face downward when the screwing is completed.

The glazing machine A is provided with a conveyor 2 for conveying the pottery P to be glazed, and a rotation imparting mechanism 3 for rotating the mounting table 25 of the conveyor 2.

The conveyor 2 includes a rail 21, a cart 22 that is appropriately transported on the rail 21, and a frame-shaped frame that is vertically disposed on the cart 22, has a pulley 23 at its lower end, and places the pottery P to be glazed at its upper end. It consists of a support 24 on which a mounting table 25 is disposed, and allows the scattering device 1a to pass therethrough as described above.

The rotation imparting mechanism 3 includes a pulley 31, another pulley, and a belt body 32 stretched over these pulleys, and the pulley 31 is rotationally driven by a motor (not shown) to drive the belt body 32. .

In addition, since the pulley 23 of the conveyor 2 comes into sliding contact with the belt body 32 when passing through the inside of the casing AC, it is formed so that the support 24 and the mounting table 25, and eventually the pottery P to be glazed, are rotated between them. There is.

Next, the operation of the glazing machine A formed as described above will be explained.

First, the three motors 132 of the scattering device 1a are started, and the respective spray cylinders 12 are rotated.
Next, open the on-off valve (not shown) of the glaze tank Y, introduce the glaze into each supply pipe 11, and fill the through hole 111 with the glaze.
It will be supplied from Then, the on-off valves 15 are adjusted so that the ideal mist is scattered over the entire surface of the pottery P to be glazed.

After completing the above adjustments, the pottery P to be glazed may be placed on the carrier 2 and passed through the glazing machine A continuously.

At this time, the air inside each of the scatterers 1 exhibits a negative pressure state due to the centrifugal force caused by the rotation of the scattering cylinder 12, as described above, and the glaze supplied from the through holes 111 is in an extremely unstable state on the verge of splitting. In a stable state, it first collides with the middle scattering barrel 122b, is instantly crushed, is blown away through the mesh, and is further blown away by the outer scattering barrel 122b.
Since it is re-pulverized by a, each of the mist powders that make up the mist are made into extremely fine particles of uniform size, and the glaze is applied with a very uniform thickness.

In addition, since the three scatterers 1 scatter the mist from around the pottery P to be glazed, the entire surface can be glazed at once, which is very efficient. Further, in the present invention,
Since the on-off valve 15 is provided at the end of the supply pipe 11,
It is easy to adjust the mist dispersion state, and even if the mist dispersion state changes for some reason while the glazing machine A is operating, the machine will not be lost, and the adjustment can be made even while the operation is continued. Fully open and supply pipe 1
Since the entire amount of glaze remaining in 1 can be discharged and recovered, it is certain that the glaze loss rate, which was improved to around 10% in the previous invention, will be further improved by several percentage points.

In the above embodiment, the outer dispersing barrel 122a and the inner dispersing barrel 12 are formed of fine wire mesh or the like on the dispersing barrel 12.
Although 2b has been described as having a concentric two-layer structure, the present invention is not limited to this, and it is also possible to use a single-layer structure, or a cylindrical structure in which a large number of fine holes are formed in a metal plate or the like. In addition, when using two or more layers, a cylinder made of wire mesh etc. and one made of metal plate etc. may be used in combination alternately, and the point is that the selection should be made as appropriate depending on the properties of the glaze, the shape and material of the pottery to be glazed, etc. Needless to say.

Further, the specific structure, shape, and size of each part of the spraying device according to the present invention, such as the driving method of the spraying tube 12 and the method of supporting the scattering tube 12, as well as the structure and arrangement method of the glazing machine attached thereto, are disclosed in the present invention. It goes without saying that these changes may be arbitrarily determined within the scope of achieving the above-mentioned objects, functions, and effects, and these changes do not change the gist of the present invention in any way.

[Effects of the Invention] As explained in detail above, the present invention has a structure in which a cylindrical gap is provided around a supply pipe having a through hole and a rotatable dispersion cylinder is provided, so that the dispersion By rotating the tube, the negative pressure generated in the gap between the tube and the supply tube and the centrifugal force applied to the spray tube can scatter the glaze in the form of a fine mist bundle in any direction. Therefore, it is possible to form a uniform mist powder with less air inclusion, and it is possible to reduce scattering to objects other than the object to be glazed, making it easy to collect it, and in conjunction with the on-off valve at the end of the supply pipe, it reduces waste of glaze. Moreover, since a dust collector is not required, the entire device can be made compact and power-saving.Also, since it can be dispersed as a uniform and ultra-fine mist, it is possible to glaze the object evenly and with a uniform thickness. The present invention is ideal for mass production, and various mist conditions can be formed depending on the number of layers and combinations of spray tubes. It must be said that the benefits brought are enormous.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention.
The figure is a front cross-sectional view of a scattering machine according to the present invention, FIG. 2 is a partial cross-sectional front view of a glazing machine equipped with a scattering device, and FIG.
The figure is a sectional view taken along the line XX in FIG. 2. 1...Scatterer, 1a...Scatter device, 11...Supply pipe, 111...Through hole, 12...Scatter tube, 122
a...Outer dispersion cylinder, 122b...Medium dispersion cylinder, A...
Glazing machine.

Claims (1)

[Claims] 1. A cylindrical dispensing tube with a large number of fine holes penetrating the outer periphery of the supply pipe, which has a cylindrical shape and a plurality of fine holes, is attached to the outer periphery of the supply pipe. Negative pressure generated in the gap and centrifugal force applied to the scattering tube by rotating the scattering tube, which is provided with a gap and at least one rotatably arranged, in the transport path of the object to be glazed. A glazing machine characterized in that the glaze is atomized and can be scattered onto the object to be glazed.