JP2002103314A - Method for releasing sanitary ware molded body from mold and two-releasing apparatus and cradle for mold- releasing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically carry out releasing a molded body without decreasing a quality of the molded body from a horizontal press type pressure casting molder on which a plurality of different shaped molded bodies are mixedly disposed. SOLUTION: For a method for releasing a sanitary ware molded body casting- molded by processing one end part of a plurality of arranged casting molds with a pressing device by arranging horizontally in a lamination state casting molds arranged so that a divided surface of a divided mold composed of the divided mold capable of being divided into two parts becomes almost vertical, a process for releasing one side divided mold on a molded body-receiving surface side of receiving the molded body in order to release the molded body from the casting mold; a process for setting the cradle to the molded body; a process for releasing the other divided mold; and a process for transferring the cradle and the molded body held by the cradle to the following process, are successively and automatically carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing sanitary ware, a demolding apparatus used therefor, and a receiving device for demolding. More particularly, the present invention relates to a sanitary ware formed by a horizontal press type pressure casting method. The present invention relates to a demolding method, a demolding device used therefor, and a demolding receiver.

[0002]

2. Description of the Related Art In general, slurry casting is widely used as a method for forming molded articles of sanitary ware such as toilet bowls, toilet bowl tanks, urinals, washbasins, handwashers, and the like. In this slurry casting, together with the conventionally used gypsum molding method, a molding die with a forced water drainage characteristic is used to shorten the molding cycle time, and the slurry is pressed into the molding die. A pressure casting method for forcibly draining the water in the slurry after casting in a state is preferably used.

As an example of this pressure cast molding method, the present applicant has disclosed in Japanese Patent Application Laid-Open No. 1-222901 the time and labor required for clamping and opening molds one by one, and the equipment required for it. We have proposed a molding method using a horizontal press type pressure casting machine. FIG. 1 shows a schematic view of a horizontal press type pressure casting machine. In this molding method, a plurality of molds are arranged side by side in the horizontal direction with the mold division surfaces of the molds being oriented vertically, and these are simultaneously clamped and pressed, and in that state, the slurry is poured into the casting space of each mold. A plurality of molded bodies are obtained at the same time by casting.

However, in this molding method, since it is necessary to release the molded product from the molding die in the horizontal direction, it is practically difficult to utilize natural demolding in the direction of gravity unlike a vertical press molding machine. is there. This makes it difficult to automate the removal of the mold, and there has conventionally been a problem that the mold is manually handled. To cope with this problem, Japanese Patent Application Laid-Open No. 7-60729 proposes a method of removing and finishing a sanitary ware molded article by suction-holding the bottom rear surface of the molded article with a robot arm.

[0005]

However, Japanese Patent Application Laid-Open No.
The robot arm type automatic demolding device disclosed in Japanese Patent No. 60729 still has some problems to be solved. First, because the shape of the molded part suction unit attached to the end of the robot arm is constant, it is necessary to replace the suction part each time a molded body with a different shape is mixed and mounted on a molding machine. Second, if the bottom of the molded body is adsorbed by the molded body suction part attached to the robot arm tip, when placing it on the demolding receiver, the only option is to hold the part other than the bottom, If you want to hold the bottom of the molded body, you cannot respond. Third, when a robot arm is used, a large robot with a large payload is needed to handle large, large-sized compacts, which results in poor investment efficiency and space efficiency. Fourth, when multiple molding dies are mounted on a molding machine, the removal position moves, so the range of possible removal of the robot arm is limited, and only a small number of molding dies can be mounted on the molding machine. Due to the above problems, it was difficult to say that it was an efficient method.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to reduce the quality of a compact from a horizontal press type pressure casting machine in which a plurality of compacts having different shapes are mixed. An object of the present invention is to provide a demolding method capable of automatically performing demolding without using the same, a demolding apparatus used for the demolding method, and a demolding receiver.

[0007]

In order to achieve the above object, according to the present invention, there is provided a casting mold which is constituted by a split mold which can be divided into two, and which is arranged such that the divided surfaces of the split mold are substantially vertical. A method for removing a sanitary ware molded body formed by arranging a plurality of forming dies in a stacked state in a horizontal direction and pressing the casting mold at one end of the plurality of arranging molds by a press device, wherein the casting is performed. A step of releasing one of the split dies on the molded body receiving surface side of the receiving body for receiving the molded body to release the molded body from the molding die, a step of setting the receiving body on the molded body receiving surface, and the other The step of releasing the split mold and the step of moving the receiving mold and the molded body to the next step are sequentially and automatically performed. By doing so, efficient demolding can be performed without deteriorating the quality of the molded body. In addition, since the receiver used for demolding can be used as it is as the receiver for transport, it is possible to omit the step of transferring the molded body in the subsequent process, and to improve the efficiency of the process and reduce the occurrence of defects at the time of transfer. Connect.

[0008] In a preferred aspect of the present invention, in the step of setting the receiving tray on the receiving surface of the molded product, the molded product is held under reduced pressure on the receiving tray. By doing so, the demolding receiver has the role of the molded body suction part, which is indispensable for demolding the molded body in the horizontal direction, and the transporter used when transporting the molded body on a conveyor or the like in the later process. It can play both roles as a recipient. Furthermore, even when molding dies with different bottom shapes are mixed on the same machine, it is possible to cope without replacing the suction part each time by using the demolding receiver matching the bottom shape of each molded body. It becomes possible.

In a preferred embodiment of the present invention, a casting mold having a split mold that can be split into two and arranged so that the split surfaces of the split mold are substantially vertical is stacked horizontally. A moving means which moves in parallel with a casting apparatus for performing a casting by pressing one end of a plurality of the casting molds arranged by the pressing apparatus with a pressing apparatus; and the casting apparatus mounted on the moving means. And a receiving and carrying-in / out means for carrying in and out of the receiving part into and out of the space formed after releasing one of the split dies to release the molded body of the tool. The present invention provides an apparatus for removing a sanitary ware molded product from a mold. By moving the demolding device in parallel with the cast molding device, the range of demolding that can be limited with a fixed type demolding device is widened, and it can be applied to molding machines equipped with a large number of casting molds. It becomes possible.

In a preferred aspect of the present invention, the receiving and carrying means comprises a receiving and rotating means for holding and rotating the receiving vessel. As a result, a series of operations in which the mold removal die is supplied horizontally to the mold removal apparatus, rotated 90 degrees and transferred to the mold removal position, and the molded body is returned to the original position after the mold removal, as a result, After arranging the mold removal receptacle in the vertical direction according to the shape of the molded body receiving surface, the mold removal can be performed in the horizontal direction. In addition, since the strength of each shaft can be designed as required, the limit of the load capacity, which is a problem with general-purpose robots, is widened, and a great effect can be obtained especially in the removal of large molded products.

In a preferred aspect of the present invention, the receiving and holding rotation means includes a positioning means for positioning with respect to the casting mold. By doing so, it is possible to accurately dispose the mold removing receptacle at a position where the molded article can be adsorbed without damaging the molded article.

Further, the present invention comprises a receiving surface portion for receiving a molded product when the molded product is released from the casting mold, and a decompression space portion behind the receiving surface portion, wherein the receiving surface portion has a plurality of pressure reducing spaces. A sanitary porcelain molded article removing mold for receiving a small hole, wherein the small hole communicates with the reduced pressure space through the small hole. By doing so, the molded body can be sucked and held, and even in a casting apparatus in which molded bodies having different shapes are mixed, the portion to be sucked and held in each case can be easily removed in the horizontal direction without being replaced according to the shape of the molded body. Can be typed.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment according to the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of a horizontal press type molding machine (cast molding apparatus) A for simultaneously casting a large number of wash basins. A large number of molding dies 2 are suspended and supported on a molding press frame 4 via a molding die suspension cart 5 so as to be movable. The mold press cylinder 3 is disposed at one end of the molding press frame 4. The molding die 2-1a at one end is opened and closed by the mold press cylinder 3, and a large number of molding dies 2 are pressed. Mold 2 other than mold 2-1a
Opening of the molds 1b, 2-2a, 2-2b, 2-3a, 2-3b,... Is performed by moving the molding die carriage 5 by the automatic mold opening device 6.

As shown in FIG. 2, the demolding device 8 is installed in parallel with the horizontal press-type molding machine (casting molding device) A, and on the floor in parallel with the horizontal press-type molding machine (casting molding device) A. Truck 20 traveling on a traveling rail 20a laid on the vehicle
b, a horizontal press type molding machine (casting apparatus) A mounted on the traveling vehicle 20b in a direction perpendicular to the traveling direction of the traveling vehicle 20b.
And a receiving and carrying-in / carrying-out device 20c for carrying in and out the receiving toy 21. Receiving and loading device 20
“c” denotes an automatic demolding head 14 that supports the receptacle 21, and a slide base moving rod for moving the automatic demolding head 14 into and out of a horizontal press type molding machine (casting molding device) A. A rescue cylinder 18 is provided.

FIG. 3 shows a cross-sectional view and a plan view (left half) of the mold removal receptacle 21. The receiving mold for removal 21 is composed of a receiving dish base plate 9 for transport and a receiving dish main body 11 supporting the bottom surface of the molded body 1 (the back side of the basin). A hollow space (decompression chamber 11a) is provided therebetween. A communication hole 10 for decompression communicating with the decompression chamber 11 a is formed in the receiving base plate 9, and the molded body 1 of the receiving body 11 is formed.
Are formed on the surface which comes into contact with the inner space, and a seal packing 13 surrounds the periphery thereof.
With these configurations, when removing the mold, the mold receiving part 21 is brought into close contact with the bottom surface of the molded body 1 in the molding die, and the molded body 1 can be adsorbed to the mold receiving part 21 by reducing the pressure through the decompression communication hole 10. . In addition, the receiving plate base plate 9 is also used. By attaching a receiving plate for exclusive use of various molded bodies in which only the receiving plate main body 11 is mixed and supplying a releasing die of a required pattern as required, 1. Automatic demolding is possible even if a mold having a different shape is mixedly loaded in the base molding machine.

Next, the steps from setting the mold removal receptacle 21 to the mold removal apparatus 8 to completion of the automatic mold removal will be described with reference to FIGS. 4, 5 and 6, including the functions of the apparatus. 4 is an assembly diagram of the demolding device 8, FIG. 5 is a partial detailed view of the automatic demolding head unit 14, and FIG.

[0017] The demolding receiver 21 conveyed from the demolding receiver and supply conveyor 35 by an automatic transfer machine (not shown) or the like is set in the automatic demolding head unit 14. Is fixedly held by a clamp 34. (FIG. 6 (a)) At this time, the decompression communication contact pad 32 provided on the automatic demolding head part 14 and the decompression communication hole 10 of the demolding receiver 21 are in close contact with each other. The decompression chamber 11a is connected to a vacuum pump pipe (not shown).

Next, the mold receiving mold 21 is aligned with the mold 2 and
Rotate 0 degrees. (FIG. 6 (b)) For this purpose, the removing device 8 is provided with a mechanism capable of rotating the automatic removing head portion 90 by 90 degrees by the head rotating shaft 15 and the motor 16 with the head rotating reducer.

The automatic removal head 14 clamping the removal receptacle 21 rotated by 90 degrees is connected to a slide base 17 for inserting the head, and these are formed by a rodless cylinder 18 for moving the slide base. Insert between the opened molds B. In this example, the automatic mold release head unit 14 moves from the back of the paper to the near side, and enters the space B between the molding dies. At the time of insertion, the mold to be released from the casting apparatus A is opened by the automatic mold opening apparatus 6 in advance. In some cases, the molded body 1 has a pre-inclined shape in the molding die. In this case, a function is also provided in which the clamp 21 is properly inclined by the clamp base rotating shaft 31 after insertion. are doing.

The rotating mold receiving die 21 is formed into a molded product 1 of a molding die 2 by a head pushing air cylinder 22.
Pressed against the bottom of. (FIG. 6 (c)) At this time, the positioning mechanism functions so that the mold release receptacle 21 is pressed to the correct position without damaging the molded body 1.

The positioning is performed by the head extrusion base plate 23.
Is pushed out, first, the positioning male dowel 30 is inserted into the female dowel 33 provided in the molding die 2. At this time,
If the position is slightly deviated, the male dowel 30 for positioning is pushed into the female dowel 33, thereby causing the vertical slide base 2 to move.
7. Stress is applied in the direction in which the position of the left and right slide bases 25 is corrected. Left and right slide rails 2 for positioning
4. The position is corrected while being absorbed by the positioning vertical slide rail 26 and the floating balance air cylinder 28.

Next, the head extruding base plate 23 is further extruded. At this time, the air pressure of the horizontal extruding positioning air cylinder 29 is gradually released, so that the mold receiving die 21 remains in the fixed position and the molded body 1 remains in the fixed position. Can be closely adhered to. The positioning of the receiving mold 21 is completed by these continuous operations.

After the mold receiving container 21 is in close contact with the bottom surface of the molded body 1, the vacuum chamber 11a is attached to the vacuum chamber 11a using an attached vacuum pump (not shown).
By depressurizing the inside, the mold receiving receptacle 21 can adsorb the molded body 1. After the adsorption is completed, the molding die 2 is
Of the adsorption surface of Simultaneously with this, the molded article 1 can be separated from the molding die 2 by retracting the mold receiving receptacle 21 that has absorbed the molded article 1 by the head pushing air cylinder 22. In this case, the positioning dowel 3
Since 0 is retracted while being pressed against the female dowel 33 by the force of the coil spring, the molded body 1 is retracted while being positioned in the same manner as at the time of extrusion, and does not cause defects such as scratches.

During the retraction, the positioning cylinder 29 for horizontal extrusion reaches the stroke end, and the male dowel 30 for positioning is removed from the female dowel 33. After the retreat is completed, the molded body 1 is returned to the original position with the molded body 1 placed on the receiving mold for removal 21 by the reverse operation of the insertion process. (FIG. 6 (d))

Here, the decompression state of the decompression chamber 11a is released,
Automatic transfer machine (not shown) and mold receiving mold 21 and molded body 1
Are transferred to the receiving and supplying conveyor 35 for removal from the mold and transported to the next process. (FIG. 6 (e))

This is a series of demolding steps. In the demolding of the next molded product, since the mold opening position is different, the traveling vehicle 20a can travel to the position designated by the motor 19 with the traveling speed reducer. ing.

In addition, one of the normal casting molds is
Although a plurality of compacts are formed, a compact having a small shape may be formed by molding two or more compacts from one mold. In this case, it is possible to remove two or more molded bodies at a time by modifying the removal apparatus so that two or more removal molds can be set in the automatic removal head.

[0028]

According to the present invention, it is possible to automatically remove a molded product from a horizontal press-type pressure cast molding machine in which a plurality of molded products having different shapes are mixed, without deteriorating the quality of the molded product.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a horizontal press-type molding machine (a casting apparatus) according to an embodiment of the present invention.

FIG. 2 is an installation diagram of a demolding apparatus showing one embodiment of the present invention.

FIGS. 3A and 3B are a cross-sectional view and a top view, respectively, showing one embodiment of a mold removal receptacle used in the present invention.

FIG. 4 is an assembly view of a demolding apparatus according to one embodiment of the present invention.

FIG. 5 is a partial detailed view showing a head portion of the demolding apparatus according to one embodiment of the present invention.

FIG. 6 is an example of a process exploded view of the demolding apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Molding body 2 ... Molding die 3 ... Mold press cylinder 4 ... Molding machine press frame 5 ... Molding die hanging and moving carriage 6 ... Automatic mold opening device 7 ... Horizontal press type molding machine 8 ... Demolding device 9 ... Receiving base Plate 10: Communication hole for decompression 11: Receiving body with decompression chamber 12: Decompression suction hole 13: Seal packing 14: Automatic release head 15: Head rotating shaft 16: Motor with reduction gear for head rotation 17: Head insertion Slide base 18: Rodless cylinder for moving the slide base 19: Motor with reduction gear for traveling 20a: Traveling rail 20b: Traveling trolley 20c ... Receiving and loading device 21: Receiving and removing device 22: Air cylinder for ejecting head 23 ... Head extruding base plate 24 ... Left and right slide rail for positioning 25 ... Left and right slide base plate 26 ... Vertical slide for positioning Le 27: Up and down slide base plate 28 ... Floating balance air cylinder 29 ... Positioning air cylinder for horizontal extrusion 30 ... Male dowel for positioning 31 ... Clamp base rotating shaft 32 ... Contact pad for decompression suction 33 ... Female dowel 34 ... Clamp 35 ... Removal Receiving and supplying conveyor for molds

Claims (6)

[Claims] 1. A plurality of casting molds, each of which is constituted by a split mold that can be split into two, and is arranged so that the split surfaces of the split molds are substantially vertical, are arranged in a stacked state in the horizontal direction. A method of removing a sanitary ware molded body formed by pressing one end of a plurality of arranged casting molds with a press device, and molding the molded body to release the molded body from the casting mold. A step of releasing one of the split molds on the molded body receiving surface side of the receiving mold for receiving the body, a step of setting the receiving mold on the molded article, a step of releasing the other split mold, A method for removing a sanitary porcelain molded body, wherein the step of moving the molded body held in the mold to the next step is automatically performed sequentially. 2. The method for removing a sanitary ware molded article according to claim 1, wherein, in the step of setting the receiving piece on the molded article, the molded article is held under reduced pressure by the receiving piece. 3. A plurality of casting molds, each of which is composed of a split mold that can be divided into two, and is arranged such that the divided surfaces of the split molds are substantially vertical, are arranged in a horizontal stacked state. A moving unit that moves in parallel with a casting device that performs an injection molding by pressing one end of the arranged casting mold with a press device, and a molded body of the casting mold mounted on the moving unit. Receiving and carrying in to and from the space formed after releasing one of the split molds to remove the mold.
A device for removing a sanitary ware molded article, comprising a carrying-out means. 4. The apparatus for removing a sanitary ware molded product according to claim 3, wherein said receiving and carrying means comprises a receiving and holding means for holding and rotating said receiving means. 5. The apparatus for removing a sanitary ware molded product according to claim 4, wherein the receiving and holding rotation means includes a positioning means for positioning with respect to the casting mold. . 6. A receiving surface portion for receiving a molded body when the molded body is released from a casting mold, and a pressure reducing space behind the receiving surface portion, and a plurality of small holes are formed in the receiving surface portion. A sanitary ware molded body for removing a mold from a sanitary ware molded product, wherein the sanitary ware molded body communicates with the decompression space through the small hole.