JPH034484Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to a split mold removal device used in the molding process in the production of sanitary ware, and specifically, it This invention relates to a device for removing a split mold that has become stuck.

(Prior art) Traditionally, ceramic washbasins are molded by combining multiple molds such as plaster molds and porous resin molds to form a casting space, and then injecting slurry into the casting space. After molding, the plurality of molds are disassembled and the green material is taken out from the molds. In the case of a washbasin having a water return recess, the mold for forming the recess is a split mold, and after molding, the split mold is fitted into the green base material. The split mold that fits into the recess in the green material is provided with a recess for grasping by hand during demolding and an air supply port for demolding, and air is supplied to the air supply port from an air supply source. A hose connection jig is provided to connect the air hose, and at the same time, the air hose is connected to the air hose connection jig, and air is supplied to the inside of the split mold to connect the raw material. The split molds were removed from the split molds by an operator removing them one by one while blowing air at the interface with the split molds.

(Problem that the invention aims to solve) However, since the green material after molding is not dried, it is easily deformed, and manual demolding is difficult when connecting the air hose to the hose connection jig attached to the split mold. When separating the split mold from the green substrate, excessive force is applied to the green substrate, deforming or damaging the green substrate, resulting in defects in the product. In addition, it took time to attach and detach the air hose, and it took time to remove the mold, reducing production efficiency.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a split mold removal device that can efficiently remove a split mold without deforming or damaging the undried green material after molding.

(Means for solving the problem) According to the present invention, a device for positioning a product;
a gripping arm that is movably mounted between a standby position and an operation position, is held in the operation position with respect to the positioned product, and is operated to grip a split mold attached to the product; A split mold removing device having a split mold gripping device, wherein the gripping arm is provided with an air supply port that communicates with an air supply port opened to the outside provided in the split mold and supplies air. A split mold demolding device is provided which is characterized by:

(Example) Next, the present invention will be described using a wash basin as an example with reference to the accompanying drawings. FIG. 1 shows a schematic side view of a split mold removal device 10. As shown in FIG. The raw material 12 is a cradle (cradle) 14
It is carried by the conveyor 16 to the fixed position of the split mold demolding device 10 while being placed on the mold. In the normal position, the receiver 14 is raised and positioned by the lifting positioning device 17 provided on the split mold removal device 10, as will be described in detail below. That is, the lifting positioning device 17 has a piston/cylinder 18 fixed to the frame of the split mold demolding device 10, and a lower plate 20 is fixed to the upper end of the piston 18a of this piston cylinder 18. On the other hand, the upper plate 22 is held by a spring (not shown) and is attached so as to be movable back and forth and left and right. Before the product 12 and the receiver 14 are brought into position, the piston 18a of the piston cylinder 18 is in the waiting position,
That is, it is in the lower position, and the receiving box 14 carried by the conveyor 16 comes to be above the upper plate 22 in a fixed position. Thereafter, the piston cylinder 18 is actuated, and its piston 18a is raised, thereby raising the receiver 14. The receiver 14 is provided with a convex dowel (not shown), which is forcibly inserted into the concave dowel (not shown) attached to the frame of the split mold demolding device 10 at the upper limit of the rise for positioning. be done.
FIG. 1 shows the state in which this positioning has been performed.

Next, the split mold gripping device 30 is rotated from its upper standby position as shown by arrow A around the rotating shaft 32 to the operating position shown in FIG. 1, and grips the split mold. Perform demolding. The details of this demolding will be explained with reference to FIGS. 2 to 4. FIG. 2 is an enlarged side view of the split mold gripping device 30, FIG. 3 is a plan view thereof, and FIG. 4 shows the gripping arm of the split mold gripping device inserted into the recess of the split mold. FIG. 3 is a perspective view schematically showing the state.

The split gripping device 30 has a mounting member 34 secured to the rotating shaft 32, and a piston cylinder 36 is secured to the mounting member 34. The piston (plunger) of this piston cylinder 36
A pin 38 is attached to the tip of 36a,
Two arms 40 are attached to this pin. An arm 43 is attached to this arm 40 via a pin 42, and a shaft 45 is fixed to the lower end of the arm 43. This shaft 4
5 is a bearing 4 fixed to the mounting member of the split gripping device.
7 so that it can rotate freely. A gripping arm 44 is fixed to the lower end of the shaft 45, and its tip 44a is expanded inward. An air supply opening 4 is provided at the inner end of this tip 44a.
4b is provided. The air supply opening 44b is configured to be supplied with air from an air supply source (not shown) through a suitable tube, such as tube 48 (only one of which is shown).

On the other hand, as shown in FIG. 4, the split mold 50 has two symmetrical recesses 52, and air supply ports 54 are provided on both sides of a wall 56 that partitions the recesses 52.

When the split mold gripping device 30 is rotated from the standby position to the operating position as shown by arrow A as shown in FIG. 1, the two recesses 52 of the split mold 50
The distal ends of the two gripping arms 44 are respectively inserted in the expanded state as shown by solid lines in FIG. In this state, when the piston/cylinder 36 is actuated and the piston 36a moves outward, the arm 43 rotates about the shaft 45 via the arm 42 and pin 42 as shown by arrow B. Therefore, the gripping arms 44 fixed to the shaft 45 also rotate inwardly about the shaft 45 as shown by arrows C. As a result, the tip 44a of the gripping arm 44 is attached to the wall 50 of the split mold 50.
firmly grip the wall 56 by contacting both sides of the
At this time, the air supply opening 44b of the tip portion 44 is aligned with the air supply opening 54 of the split mold 50. Next, air is supplied from the air supply opening 44b to the air supply opening 5 of the split mold 50.
4, the air exits from the surface of the mold through porous passages provided in the mold to release the mold from the green substrate, while at the same time gripping the mold. The divided gripping device 30 is rotated from the operating position and held upward. In this way, the split mold is removed from the mold, and from now on, the split mold 50
are placed in a washer 60 located opposite the working position to be cleaned and then removed for re-forming by means of a suitable transfer device (not shown). transferred to the station.

On the other hand, after the split mold is removed, the piston/cylinder 18 is actuated, the product is lowered and placed on the conveyor 16 again to be carried to a station for the next process.

(Effects) A device for positioning the product, a gripping arm for gripping the split mold, and an air supply port on the gripping arm that contacts and supplies air to the air supply port of the split mold. At this position, the gripping arm also grips the split mold, and at the same time as it grips the air supply port provided on the gripping arm comes into contact with the air gripping port of the split mold and supplies demolding air, preventing undue force from being applied to the green material. It does not deform or damage the raw material, and (2) demolding time is shortened and production efficiency is improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of the split mold demolding device;
FIG. 2 is an enlarged side view of the split mold gripping device, FIG. 3 is an enlarged plan view of the split mold gripping device, and FIG. 4 is an enlarged side view of the split mold gripping device. FIG. 3 is a perspective view schematically showing a state in which the gripping arm of the gripping device is inserted. 10... split mold demolding device, 12... product, 14...
... Receiving tool, 19... Raising positioning device, 30... Split mold gripping device, 44... Gripping arm, 50... Split mold.

Claims (1)

[Scope of utility model registration request] A device for positioning a product, and a device that is movably attached between a standby position and an operating position, is held in the operating position with respect to the positioned product, and operates to grip a split mold attached to the product. a split mold gripping device equipped with a gripping arm, the gripping arm having an air supply unit that communicates with an air supply port opened to the outside provided in the split mold to supply air. A split mold demolding device characterized by having a supply port.