JPH03208604A - Slurry-casting device of sanitaryware - Google Patents

Abstract

PURPOSE:To enable labor saving to be achieved, while the engagement and detachment of the top force of a gypsum mold are easily carried out by providing the turning device and the lift device of an arm, a carriage which is movable in parallel with a rail along the connector of the gypsum mold and the bearing holder which supports the top force, which is kept and turned by the arm. CONSTITUTION:The action side of an arm 46 is brought down so as to cover the top force 22 of a gypsum mold 14 by driving a driving device 54. Next, after the arm 46 has been raised and when it is turned in the direction of mold opening, the mold is opened. When the arm 46 is turned until the top force 22 is turned over, the top force 22 is supported on a bearing holder 22. Then, the holding of the top force 22 by the arm 46 is released, and the arm 46 is lowered. Thus, after the mold opening for one gypsum mold has been achieved, a carriage 40 is moved by the length of one gypsum mold, and for adjacent gypsum mold, mold-opening is similarly achieved. To carry out mold closing, the carriage is moved so that the arm enters downward of the top force which is supported by the bearing holder, and the arm is brought in contact with the top force by elevating the arm, and then after the top force has been kept by the arm, the arm is turned to the upper part of the position wherein the top force covers the gypsum mold of lower side, and next the arm is lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a slurry casting device for sanitary ware, and more particularly to a slurry casting device for sanitary ware whose upper mold can be easily attached and detached.

[Prior Art] The slurry casting method, in which sanitary ware is formed by injecting slurry into a plaster mold and depositing it on the inner surface of the molding space of the plaster mold, has been widely used as a molding method for toilet bowls, wash basins, etc. There is.

Such a plaster mold for slurry casting is divided into several molds such as an upper mold, a lower mold, and a horizontal mold, and by combining each mold, a plaster mold having an internal molding space is constructed.

Figures 9 and 10 show a conventional example of a slurry casting device for mass-producing Western-style toilet bowls, in which a number of carts 12 are installed on a rail 10, and a plaster mold 14 is placed on top of the carts 12. . The plaster mold 14 has a lower mold 16 and left and right horizontal molds 18 and 20.
, an upper mold 22 is provided, the lower mold 16 is fitted into the horizontal molds 18 and 20 from below, and the upper mold 22 is configured to cover the upper end surfaces of the horizontal molds 18 and 20.

The plaster mold 14 is placed on a support plate 24, and the support plate 24 is placed on the cart 12. Reference numeral 26 indicates wheels of the truck 12, and reference numeral 28 indicates a rail frame.

A large number of plaster molds 14 are placed side by side as shown in FIG. 9, and are forcefully moved toward the end member 30 on the right side of the figure by a hydraulic cylinder (not shown) disposed on the left end side of FIG. The horizontal molds 18 and 20 are pressed into close contact with each other.

Conventionally, the upper mold 22 of the plaster mold 14 was attached to and removed from the lower molds (horizontal molds 18, 20) by moving it up and down using a lifting device such as a chain block. In addition, upper mold 1
4 is placed on the horizontal molds 18 and 20, the molds are clamped using a chuck device such as an air chuck, and after the mating surfaces of the molds are brought together in a watertight manner, slurry is injected into the plaster mold.

[Problems to be Solved by the Invention] In the conventional method described above, the work of raising and lowering the upper die is time-consuming. Furthermore, if the upper mold is attached and removed by simply moving up and down, there is a risk that foreign matter or debris adhering to the upper mold may fall onto the product and become mixed into the product.

[Means for Solving the Problems] The sanitary ware slurry casting apparatus of the present invention includes a plaster mold in which an upper mold is detachably attached to a lower mold, and a device for attaching and detaching the upper mold. A large number of molds are connected and installed on a rail, and the attachment/detachment device includes an arm that is rotatable around a horizontal axis and can hold the upper mold on the lower surface of the working side, and the arm. a rotating device for the arm, a lifting device for the arm, and a cart on which the arm, the rotating device, and the lifting device are installed and movable along the plaster-shaped connection body in parallel with the rail; and a support base for supporting the upper mold which is held by the mold and rotated until it assumes a supine position.

[Function] In the sanitary ware slurry casting device of the present invention, the driving device is driven to lower the working side of the arm so as to cover the upper mold of the plaster mold, and then the arm is raised and then moved in the mold opening direction. The mold is opened by rotating it.

When the arm is rotated until the upper mold is in a supine position, the upper mold is supported on the support base. Then, the upper die is released from being held by the arm, and the arm is lowered.

In this way, one plaster mold is opened.
After that, the cart is moved by one plaster mold, and the adjacent plaster molds are opened in the same manner.

To close the mold, the carriage is moved so that the arm extends below the upper mold supported on the support base, and then the arm is raised and brought into contact with the upper mold. Next, after the upper die is held by the arm, the arm is rotated.

The arm is rotated above the position where the upper mold covers the lower plaster mold, and then the arm is lowered. After the upper mold covers the lower plaster mold, the upper mold is released from being held by the arm.

After closing one plaster mold in this way, the cart is moved and the adjacent plaster mold is closed.

In this way, according to the apparatus of the present invention, the opening and closing operations of the plaster mold can be performed extremely quickly. In addition, when the upper mold is opened, the upper mold can be completely evacuated from above the product (lower mold), so foreign objects and debris attached to the upper mold can fall onto the product and get mixed into the product. Problems can be avoided. Since there are no heavy objects directly above the mak1 product finishers, safety can be ensured even in the event of an earthquake or other emergency.

[Example] Examples will be described below with reference to the drawings.

FIG. 1 is a front view of a slurry casting device according to an embodiment of the present invention;
Figure 2 is a right side view (side view along line II-II in Figure 1)
, FIG. 3 is a plan view, FIG. 4 is a perspective view of the rack for receiving the upper die, and FIGS. 5 to 8 are explanatory views of the operation.

In FIG. 1, a pair of rails 10 are mounted on a rail mount 32.
is installed, and a trolley 12 with wheels 26 is mounted on the rail 10.
It is said that it is possible to run on it.

A support plate 24 is placed on the trolley 12, and this support plate 24
A plaster mold 14 is placed on the upper side. This plaster mold 14
Similar to the conventional example shown in FIGS. 9 and 10, horizontal molds 18 and 20, an upper mold 22 that covers the upper end surfaces of the horizontal molds 18 and 20, and a model 18
, 20 from below.

Next, the structure of the device 34 for attaching and detaching the upper mold 22 will be explained.

A rail 36 is installed parallel to the rail 10,
A truck 40 having wheels 38 is able to run on the rails 36. A hydraulic lifter 42 is installed on this truck 40, and an arm 46 and a rotation device 48 for the arm 46 are installed on an elevating plate 44 of the hydraulic lifter 42. A shaft 52 is fixed to the base end side of the arm 46, and the shaft 52
is pivotally supported by a bearing 50. The rotation device 48 is the motor 5
4 and a speed reducer 5B, the output shaft of the speed reducer 56 is connected to the shaft 52 via a shaft joint 58.

A holding device 60 for holding the upper mold 22 is provided at the tip of the arm 46. As shown in FIG. 2, this holding device 60 includes a motor 62 and a claw 64 that is protruded and retracted by the motor 62. It is considered possible. The hook portion 66 has a crank-shaped cross section,
When the claw 64 is protruded, the claw 64 enters the lower side of the hook 66, and the arm 46 and the plaster mold 22 are held (clamped).
state. When the claw 64 is moved backward, the state in which the upper mold 22 is held by the holding device 60 is released (unclamped).

Note that the plaster mold 14 is attached to the rail 10 as shown in FIG.
A large number of them are installed along the road, and as in the past, they are tightened together by hydraulic cylinders and installed as a plaster-type connected body. The trolley 40 is movable on the rails 36 in parallel with this coupling body, and a self-propelling motor 70 is installed on the trolley 40 to automatically perform this movement. In addition, limit switches (not shown) are provided at each installation interval of the plaster molds 14 so that the cart 40 can move and stop in steps corresponding to one plaster mold. In addition,
In order to supply power to the motor 70 of the trolley 40, trolleys 74 are mounted on the supports 72 provided at predetermined intervals along the rail 36.
is provided.

A receiving rack 76 is provided at the upper end of this support 72 as a support for receiving the upper die 22. This receiving rack 76
As shown in FIG. 2 and FIG.
It is set up accordingly. Note that the receiving racks 76 are provided so that the spaces 78 between the receiving racks 76 correspond to the center positions of the respective plaster molds 14.

The opening/closing operation of the upper mold of the slurry casting apparatus constructed as described above will be described next with reference to FIGS. 5 to 8.

To remove the upper mold 22 from the plaster mold 14, use the hydraulic lifter 4.
2 is extended, and the rotating device 48 is operated so that the arm 46 occupies a position above the plaster mold 14. Note that the claws 64 of the holding device 60 are set back. In this state, the hydraulic lifter 42 is lowered and the claws 64 of the holding device 60 are introduced between the hook portions 66. (See Figure 5) and
The motor 62 is operated to protrude the claw 64 and the arm 46
In contrast, the upper die 22 is in a clamped state. Thereafter, the hydraulic lifter 42 is raised to lift the upper mold 22. This state is shown by the two-dot chain line A in FIGS. 6 and 1.

From this state, the arm 46 is rotated as shown by the two-dot chain line B by the rotation device 48. When the upper mold 22 is rotated from vertical to supine, the upper mold 22 is received by the receiving rack 76 as shown in FIG. 1C and FIG. 7.

Therefore, the claw 64 of the holding device 60 is operated backward, and the upper mold 2
2 and the arm 46 are brought into an unclamped state. Next, the hydraulic lifter 42 is lowered. This state is shown in figure la and the first
This is the state shown by D in the figure. Note that a stopper for preventing the upper mold 22 from falling is provided at the lower end of the receiving rack 76.

After the arm 46 is lowered to position D, the carriage 40 is moved by a step corresponding to one plaster mold 14, and the upper mold 22 of the adjacent plaster mold 14 is opened in the same manner. Note that when the arm 46 transitions from state A to state D,
Or conversely, when transitioning from state D to state A, the fourth
The arm 46 passes through the space 78 shown.

As mentioned above, a limit switch is provided corresponding to each plaster mold 14, so that the trolley 40 can accurately move the plaster mold 14.
The upper mold 22 is moved by the width of one mold, and the upper mold 22 is sequentially opened for adjacent plaster molds.

As shown in FIG. 7, the open upper mold 22 is completely retracted from above the horizontal molds 18 and 20, so that objects falling from the upper mold 22 do not adhere to the product.

When the upper mold 22 is placed over the plaster mold 14 whose upper mold is open, the operation may be performed in the completely reverse order to the above. That is, first, the arm 46 is positioned below the plaster mold 22 on the receiving rack 76, and the hydraulic lifter 42 is raised. After the claws 64 are introduced between the hook portions 66, the claws 66 are projected to clamp the arm 46 and the upper die 22 on the receiving rack 76.

Thereafter, the arm 46 is rotated in the opposite direction of the arcuate arrow B, and the upper mold 22 is positioned 1 1 vertically above the plaster mold 14. Thereafter, the hydraulic lifter 42 is lowered and the upper mold 22 is placed over the horizontal molds 18 and 20. After the claw 64 is moved back and the arm 46 and the upper die 22 are brought into an unclamped state, the hydraulic lifter 42 is raised to first raise the arm 46 to the position 8. Next, arm 46 as shown in B
is rotated, and then the hydraulic lifter 42 is lowered to return to the state shown in D in FIG. Thereafter, the cart 40 is moved by the width of one plaster mold 14, and the arm 46 is moved below the upper mold 22 of the adjacent plaster mold 14. Therefore, the upper mold 22 is also placed over the horizontal molds 18 and 20 using the same procedure as described above. In this way, a large number of installed plaster molds 14 can be covered with the upper molds 22 one after another.

[Effects] As described above, according to the slurry casting apparatus of the present invention, the upper mold of the plaster mold can be attached and detached very easily. According to the device of the present invention, the attachment and detachment of the upper mold, which conventionally required a lot of manual labor, is automatically performed, so that significant labor savings can be achieved. Further, according to the invention, falling objects from the opened upper mold do not adhere to the product, thereby preventing product deterioration.

[Brief explanation of drawings]

Fig. 1 is a front view of the apparatus according to the embodiment of the present invention, Fig. 2 is a right side view, Fig. 3 is a plan view of the upper mold attaching/detaching device, Fig. 4 is a perspective view of the receiving rack, Fig. 5, 6, 7, and 8 are explanatory diagrams of the operation of the embodiment device, FIG. 9 is a side view showing a conventional example, and FIG. 10 is a sectional view taken along the line X--X in FIG. 9. 10...Rail, 14...Gypsum mold, 18
．． 20...Horizontal type, 22...Upper die, 34...Upper die attaching/detaching device, 40...Dolly, 44...Hydraulic lifter, 46...Arm, 48...Rotating device,
54...Motor, 56...Reducer, 6
0... Holding device, 64... Claw, 66
...Hook part, 76...Receiving rack.

Claims (1)

[Scope of Claims] A plaster mold in which an upper mold is removably attached to a lower mold, and a device for attaching and detaching the upper mold, wherein a plurality of plaster molds are connected and installed on a rail. The attachment/detachment device includes an arm that is rotatable around a horizontal axis and can hold the upper mold on the lower surface of the working side, a rotation device for the arm, a lifting device for the arm, and an arm for holding the upper mold on the lower surface of the working side. , a cart equipped with a rotation device and a lifting device and movable parallel to the rail along the plaster-shaped connecting body; A sanitary ware slurry casting device comprising a support base for supporting a mold.