JP2776199B2 - Transferring method of green body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for transferring a green body, which is used in a process of manufacturing ceramic products such as sanitary ware. More specifically, the present invention relates to a method of transferring a green body formed in a container shape.

[0002]

2. Description of the Related Art As an example of producing a ceramic product, a method for producing a raw tank for supplying water to a toilet will be described. clay,
Raw materials such as pottery stone are pulverized into a slurry (water slurry), and a molded body (green body molded body) having a predetermined shape is molded using a molding die such as a gypsum mold or a water-absorbing synthetic resin mold. After drying this green compact, it is glazed and fired to obtain a product.

[0003] After the green body is released from the molding die, it is perforated (holes for mounting various metal fittings and the like are formed), the shape is corrected, and then sent to a drying step. As described above, the green compact undergoes several steps from the demolding step to the drying step. When the green body is sent to the next step, a transfer operation for lifting and transporting the green body is required.

[0004]

SUMMARY OF THE INVENTION The present invention aims at streamlining the process of feeding a green body molded from a molding die to a drying process.

[0005]

According to a first aspect of the present invention, there is provided a method for transferring a green body molded body, comprising: a transfer tool having a suction pad inside a container-shaped green body formed at a first position; Inserting, sucking the suction pad on the inner surface of the side wall of the green body, holding the green body, transferring the green body to lift the green body and transport it to the second position In the method, a correction mold having a regular shape of an outer surface of a side wall of a green body is disposed at the first position along the outer surface of the side wall of the green body, and the transfer tool includes: A movable pressing plate is provided for pressing the molded body from the inner surface and pressing the outer surface of the side wall of the green body molded body against the correction mold. Press the inner surface of the green body to correct the shape of the green body It is characterized in that there was Unishi.

According to a second aspect of the present invention, there is provided a method for transferring a green body molded article according to the first aspect, wherein the transfer tool further comprises a bottom surface which is adsorbed to a substantially central part of a bottom surface of the container-shaped green body molded body. A suction pad, and a bottom movable pressing plate for pressing a position different from the part of the approximate center of the bottom surface,
In transferring the green body, the suction pad for the bottom surface is attracted to the bottom surface of the green body to hold the bottom surface, and after the green body is lowered to the second position, the movable pressing for the bottom surface is performed. The plate is pressed against the bottom surface of the green body to flatten the bottom surface of the green body.

According to a third aspect of the present invention, there is provided a method of transferring a green body molded article according to the first or second aspect, wherein the green body molded body has a convex curved surface in a path for transporting the green body molded article from the first position to the second position. The molded member is placed in advance, and during the transportation, the side wall of the green body is pressed against the mold member to deform the side wall of the green body into the green body. It is characterized by the following.

[0008]

According to the first aspect of the present invention, a movable pressing plate is provided on a suction type transfer tool. The green body is pressed from the inside by this movable pressing plate,
The shape is corrected by pressing it against the correction mold.

In the method for transferring a green body molded article according to the second aspect, the bottom surface of the green body formed body is also sucked and held by the movable bottom plate provided on the transfer tool. As a result, the bottom surface of the green compact is less likely to sag. Note that a part of the bottom surface of the green body may hang down during transfer,
After being lowered to the position, the movable pressing plate for the bottom surface can be flattened.

In the method for transferring a green body, the shape of the green body can be modified so that the side wall of the green body enters the green body. In addition, when the green body molded body is a wall-mounted low tank, in order to make the back of the raw tank stick to the wall of the toilet room, so-called concave, the low tank back is recessed so as to enter into the low tank. It is necessary to be. According to the method for transferring a green body molded article of the third aspect, the rear surface of the green body for low tank can be easily concavely bent during the transfer of the green body formed body.

[0011]

Embodiments will be described below with reference to the drawings. FIG. 1 is a perspective view showing a method for transferring a green body molded body according to the embodiment, FIG. 2 is a side view showing a method for transferring the green body molded body according to the embodiment, and FIG. Plan view of the fourth
Fig. 5 is a longitudinal sectional view for explaining the embodiment method, Fig. 5 is a cross-sectional view of the lower part of the green body molded body for explaining the embodiment method, Fig. 6 is a perspective view showing a concave bending processing method for the green body molded body, FIG. 7 is a cross-sectional view (VII-VI of FIG. 6) showing the concave bending method of the green compact.
I vertical section). In the present embodiment, the green body molded body is a green body formed of a rectangular tank-shaped low tank.

A transfer tool 12 for transferring the green body 10 includes four movable pressing plates 14, 16, 18, 20 pressed against the upper inner surface of the green body 10, and Suction pads 22 and 24 for adsorbing to front surface 10f and back surface 10r of molded body 10, and suction pad 2 for bottom surface
6 and the bottom movable pressing plate 28, and the movable pressing plate 14
20 and 28, and a mechanical box 30 having a mechanism for moving the suction pads 22, 24, 26 toward and away from the inner surface of the green body 10a. A bracket 32 protrudes from the upper surface of the mechanical box 30, and an arm 36 of the transfer robot is connected via a one-touch joint 34 as shown in FIG. A pressure reducing device (not shown) is connected to the mechanical box 30 via a pressure-resistant hose (not shown).
, A suction pressure is transmitted from the suction pad 22, 24, 26 to the inner surface of the green body 10.

Compressed air is supplied to the mechanical box 30 from a compressor (not shown), and the movable press plates 14 to 20, 28 and the suction pad 22 are operated by an air cylinder (not shown) operated by the compressed air. ~ 26
Is moved back and forth toward the green body.

The green body 10 which has been sent from the demolding step to the drilling step and in which the water supply hole 38 and the bolt hole 40 (FIG. 3) have been drilled is transferred to the next step by a roller conveyor (not shown). Will be sent out. Green body molded body 10 sent
The transfer tool 12 is inserted from above by the robot arm 36. Further, the correction mold 42 is brought into contact with the outer peripheral surface of the green body 10. Therefore, as shown in FIG.
The suction pads 22, 24, and 26 are brought into contact with the front surface 10f, the back surface 10r, and the bottom surface 10b of the green body 10, and the green body 10 is held. Also, the movable pressing plate 1
4, 16, 18, and 20 are pressed against the inner surfaces of the four side walls of the green body 10, and the shape of the upper edge of the green body 10 is modified.

It should be noted that since a lid is put on the upper surface of the raw tank, it is very important to correct the shape of the upper part of the raw tank so that the dimensions of the lid and the upper part of the raw tank match.

After correcting the shape of the upper portion of the green body 10, the correction mold 42 is retracted and the movable pressing plate 14,
16, 18, and 20 are separated from the inner surface of the green body 10. Thereafter, the robot arm 36 is operated, and the green body 10 is lifted. The lifted green body 10 is transported to a pallet (not shown) for feeding the drying process. In the middle of this, the back surface 10r is brought into contact with the convex curved surface 46a of the mold member 46 as shown in FIGS.
, And the rear surface 10r is concavely curved. That is, the rear surface 10r is concavely deformed inward of the green body molded body.

The green body molded body 10 is a green body formed of a wall-mounted low tank, and the rear surface 10r is concavely curved so that the rear surface of the low tank is stuck to the wall surface of the toilet room. That is, if the center of the rear surface of the raw tank protrudes, the protruding portion hits the wall surface of the toilet room, and only a part of the rear surface of the raw tank hits the wall surface. When the low tank back surface 10r is concavely curved, the entire periphery of the low tank back surface 10r is in close contact with the wall surface of the toilet room, and the low tank can be attached to the wall surface without rattling.

The suction pad 24 is provided as shown in FIG.
The sponge 24b is thickly mounted on the front surface of the suction box 24a. Therefore, when the convex curved surface 46 a is pressed against the green body 10, the sponge 2
4b is deformed, and the green body 10 is concavely curved.

Before or after the concave bending process, if necessary, deburring or beveling of the green body 10 or finish wiping of the outer surface of the green body using a sponge is performed.

Thereafter, the green body 10 is placed on the pallet (not shown).

By the way, the bottom suction pad 26 is
As shown in FIGS.
Is adsorbed to the rear area A. Area B in front of Area A
In FIG. 3 (FIG. 3), since the suction holding by the suction pad is not performed, the area B is plastically deformed by its own weight as shown in FIG. It often hangs down.

Then, after lowering the green body 10 onto the pallet (not shown), the bottom movable pressing plate 28 is pressed down to press the area B into the pallet. Thereby, the portion of the region B in the green body 10 becomes flat again. Thereafter, the movable pressing plate 28 for the bottom surface and all the suction pads 22 to 26 are withdrawn from the inner surface of the green body 10, and the transfer tool 12 is returned to the initial position to transfer the next green body. I do.

FIG. 8 is a perspective view from the obliquely right front showing a method of transferring a green body according to another embodiment of the present invention, and FIG.
FIG. 10 is a rear perspective view showing the method of the embodiment, FIG. 10 is a longitudinal sectional view showing the method of the embodiment, and FIGS. 11 to 14 are plan views showing the method of the embodiment.

In this embodiment, a green body 50 of a triangular prism-shaped corner type low tank is transferred by a transfer tool 52.

The transfer tool 52 includes a green body 50
Movable pressing plates 54, 56, 58, 6 abutting on the upper inner surface of
0, suction pads 62, 64, and 66 sucked on the inner side surface of the green body, a suction pad 68 for the bottom surface sucked on the bottom surface of the green body (FIG. 10), and a green body Bottom movable pressing plate 70 (tenth
FIG.), A mechanical box 72 for supporting them, and a bracket 74 protruding from the upper surface of the mechanical box 72.

The movable pressing plate 54 is pressed against the upper part of the front surface of the green body 50 and has a rectangular shape. The movable pressing plates 56 and 58 are
Are pressed against the left and right corners of the. The movable pressing plate 60 has an L-shape so as to be pressed against the corners at the rear end of the green body 50 and the left and right back surfaces 50r.

The movable pressing plates 54 to 60 and 70 and the suction pads 62 to 68 are advanced and retracted by an air cylinder (not shown) provided in the mechanical box 72. Also,
Negative pressure is transmitted to the suction pads 62 to 68 from a hose (not shown) connected to the mechanical box 72.

The transfer tool 52 is also inserted into the green body 50 by the robot arm 36 connected via the one-touch joint 34 as shown in FIG.
It should be noted that the correction mold 78 is previously provided on the outer peripheral surface of the green body molded body 50.
(FIG. 11).

The suction pads 62 to 68 are attached to the green body 50
The shape of the upper part of the green body 50 is corrected by pressing the movable pressing plates 54 to 60 against the inner surface of the green body 50 while adsorbing the green body. Thereafter, the correction mold is withdrawn from the green body 50, and the green body is lifted and transported to the pallet for feeding the drying step. In addition, the suction pad 68 for the bottom surface is
Area C on the rear side of the water supply hole 80 on the bottom surface of FIG. 13 (FIG. 13)
Is adsorbed.

During the transportation, as shown in FIG. 14, the right and left back surfaces 50r of the green body 50 are pressed against the convex curved surface 82a of the mold member 82 to make the back surface 50r concave. In addition, processing such as deburring, chamfering, and finishing wiping is performed.

Thereafter, the green body 50 is lowered onto a pallet, and the bottom movable pressing plate 70 is pressed against a region D (FIG. 13) on the front side of the water supply hole 80 to flatten the region D. I do.

Then, the suction pads 62 to 68 and the bottom movable pressing plate 70 are retracted, and the transfer tool is returned to the initial position.

As described above, according to any of the above embodiments, the green body molded bodies 10 and 50 can be efficiently transported while being suction-held by the suction pad. Then, during this transfer, shape correction and concave bending processing can be performed. Further, the bottom surface of the green body can be flattened.

Transfer tool 1 in the above two embodiments
2, 52 are connected to the robot arm 36 via a common one-touch type joint 34,
By exchanging the transfer tool connected to the robot arm according to the type of the green body molded body sent, it becomes possible for one robot to cope with a desired green body green body.

Although the above embodiment relates to the transfer of a green body molded article in a low tank, the present invention can be applied to the transfer of various other green body molded bodies.

[0036]

As described above, according to the method for transferring a green body of the present invention, the shape of the green body is corrected during the transfer of the green body, so that the manufacturing time of the ceramic is reduced. Becomes possible.

According to the method for transferring a green body molded article of the second aspect, even if the bottom surface of the green body formed body is deformed during the transfer, it can be corrected and flattened.

According to the method of transferring a green body molded article of the third aspect, the side surface of the green body formed body can be concaved during the transfer, which is suitable for transferring a green body formed body for a low tank. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a method for transferring a green body molded body according to an embodiment.

FIG. 2 is a side view showing a method for transferring a green body molded body according to an example.

FIG. 3 is a plan view of a green body.

FIG. 4 is a longitudinal sectional view for explaining a method of the embodiment.

FIG. 5 is a cross-sectional view of a lower portion of the green body illustrating the method of the embodiment.

FIG. 6 is a perspective view showing a concave bending method for a green compact.

FIG. 7 is a cross-sectional view (a cross-sectional view taken along the line VII-VII in FIG. 6) illustrating a method of performing a concave bending process on the green compact.

FIG. 8 is a perspective view from the obliquely right front showing a method for transferring a green body molded body according to another embodiment of the present invention.

FIG. 9 is a perspective view from the rear showing the method of the embodiment.

FIG. 10 is a longitudinal sectional view showing the method of the embodiment.

FIG. 11 is a plan view of a green body showing an example method.

FIG. 12 is a horizontal cross-sectional view of a green body showing an example method.

FIG. 13 is a plan view of a green body showing an example method.

FIG. 14 is a plan view of a green body showing an example method.

[Explanation of symbols]

10, 50 green body molded body 12, 52 transfer tool 14, 16, 18, 20, 54, 56, 58, 60 movable pressing plate 22, 24, 62, 64, 66 suction pad 26, 68 bottom surface suction pad 28 , 70 Bottom movable pressing plate 42, 78 Modified mold 46, 82 Mold member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) B28B 1/00-1/54 B28B 11/00-19/00 B25J 15/06

Claims (3)

(57) [Claims] 1. A transfer tool having a suction pad is inserted into a container-shaped green body formed at a first position, and the suction pad is sucked to an inner surface of a side wall of the green body. The method for transferring a green body formed body, comprising holding the green body formed body and lifting the green body body to a second position, comprising: A correction mold having a regular shape is arranged along the outer surface of the green body, and the transfer tool presses the green body from the inner surface to correct the outer wall of the green body. A movable pressing plate for pressing the mold is provided, and when the suction pad is adsorbed on the inner surface of the green body, the movable pressing plate is pressed against the inner surface of the green body to correct the shape of the green body. A method for transferring a green body molded body, characterized in that: 2. The transfer tool according to claim 1, wherein:
Furthermore, a suction pad for the bottom surface that is adsorbed to a part of the substantially center of the bottom surface of the container-shaped green body molded body, and a movable pressing plate for the bottom surface that presses a position different from the part in the substantially center of the bottom surface. When the green body is transferred, the suction pad for the bottom surface is adsorbed to the bottom surface of the green body to hold the bottom surface, and after the green body is lowered to the second position, And a method of transferring a green body formed by pressing the movable pressing plate for the bottom against the bottom surface of the green body to flatten the bottom of the green body. 3. A mold member having a convex curved surface according to claim 1 or 2, wherein a mold member having a convex curved surface is arranged in the middle of a path for transporting the green body from the first position to the second position. Wherein the side wall of the green body is pressed against the mold member to deform the side wall of the green body so as to enter the inside of the green body. .