JPH05212711A - Molding tool for washing basin and its molding method - Google Patents

Abstract

PURPOSE:To mold a wasing basin provided with a back hanger section efficiently by forming an intermediate mold for the back hanger section movably on a molding face on the rear face of a lower mold for forming the side face, rear face and lower face side when the washing basin provided with the back hanger section to be engaged with a bracket is formed on a wall face. CONSTITUTION:A molding tool 1 is composed of substantially two split sections, an upper mold 2 for forming the upper face side of a washing basin and a lower mold 4 for forming the side face, rear face and lower face side, and an intermediate mold 3 for forming a back hanger section is mounted movably on a rear face molding face 4a of the lower mold 4. Said molding tool 1 is integrated and made upright with its rear face side as a bottom, and slurry is injected and a wall is formed on the molding face to manufacture a base 7 for the washing basin. The lower mold 4 is released while the mold 1 is lifted upright, and then the intermediate mold 3 is released. After that, the rear face of the base 7 is supported by a supporting stand 8, and a main body 2a of the upper mold 2 and a basin face forming section 2b are released. The base 7 for the washing basin can be released in the upright state without changing its posture.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a novel molding means capable of efficiently molding a washbasin having a back hanger portion on its back surface.

[0002]

2. Description of the Related Art As one means for attaching a washbasin to a wall surface, as shown in FIGS.
There is known a mounting structure in which the back hanger portion 12 is engaged with a bracket 14 fixed to the wall surface 13. As shown in the cross-sectional view of FIG. 10, the back hanger portion 12 is composed of a recess formed in the back surface 11 of the washbasin 10 and opening obliquely downward from the front to the rear, and into the recess, the wall surface 13 is formed. The basin 10 is attached to the wall surface 13 by inserting the locking portion 15 of the bracket 14 that projects obliquely upward from the front side.

The back hanger portion 1 is provided on the back surface 11 as described above.
In order to mold the basin 10 provided with 2 by the sludge casting method, usually, as shown in FIG. 11, an upper mold 41 for molding the upper surface side of the basin 10 and a side surface and a lower surface side of the basin 10 are formed. A three-part molding die 40 including a lower die 43 for molding and a back die 42 for molding the back side of the washbasin 10 is used. The upper mold 41 has a bowl surface forming portion 41b that is separable from the main body 41a so as to form a bowl surface 17 (see FIG. 10) that bulges outwardly from the upper opening 16 of the washbasin 10. There is.

The process of forming a washbasin by the vertical casting method using the above-mentioned three-piece mold 40 will be described below. First, as shown in FIG. 12, an upper die 41 and a back die 4
2. The lower die 43 is united, and the molding die 40 having the casting space 44 therein is erected with the back die 42 as the bottom surface.
Next, as shown in FIG. 13, the casting space 4 in the molding die 40
4, the sludge 45 is poured into the molding surface, and the sludge 45 is inlaid on the molding surface as shown in FIG. 14, and the excess sludge 45 is discharged as necessary to obtain a washbasin base 46. Subsequently, as shown in FIG. 15, the lower mold 43 of the molding mold 40 is demolded, and the lower surface and the side surface of the washbasin substrate 46 are finished, and then, as shown in FIG.
As described above, the base receiver 47 is attached to the lower surface of the washbasin base 46. In this state, the washbasin substrate 46 is rotated by 90 degrees to change the posture as shown in FIG. 17, and then the main body 41a of the upper mold 41 is lifted and removed from the mold as shown in FIG. Remove the portion 41b from the washbasin base 46,
Next, the back mold 42 is pushed down diagonally and removed. Finally, finishing is applied to the upper surface and the back surface, and again, as shown in FIG.
After standing up, drying, glaze, baking, etc. are completed, and the manufacture of the washbasin is completed.

[0005]

The above-described conventional molding means for the washbasin 10 having the back hanger portion 12 has the following problems that require improvement. First, after removing the lower mold 43 from the washbasin substrate 46, in order to remove the upper mold 41, attach the substrate receiver 47 to the washbasin substrate 46, and rotate the washbasin substrate 46 90 degrees in that state. It is essential. Since the washbasin base 46 is flexible, it requires careful handling, and since the base holder 47 is attached, the weight of the washbasin base 46 becomes very large. Therefore, the rotating and moving work of the washbasin base 46 becomes a heavy work burden. ..

The second problem is that removal of the upper mold 41 is
Since this must be lifted above the washbasin base 46 placed on the base receiver 47, the demolding work of the upper mold 41 is also a heavy labor.

A third problem is that it is necessary to change the posture of the washbasin substrate 46 to the standing state again after the mold 40 is removed from the mold and before it is conveyed to the drying process, which is troublesome. That is the point. In addition, in order to mechanize each of the above-mentioned operations so as not to rely on human labor, a great amount of capital investment is required, which is not easy.

[0008]

DISCLOSURE OF THE INVENTION The present invention provides a novel mold and method for a wash basin which can solve the above-mentioned conventional problems. The features of the molding die according to the present invention include an upper die for molding an upper surface side of a washbasin, a lower die for molding side surfaces, a back surface and a lower surface side of the washbasin, and a rear surface of the washbasin in the lower die. It is composed of a medium-sized back hanger portion which is detachably attached to the molding surface.

Further, the molding method according to the present invention is characterized in that the above-mentioned molding die is used to form a back hanger portion on the molding surface on the back surface of the washbasin in the lower mold for molding the side surface, back surface and lower surface side of the washbasin. A forming medium mold is detachably attached, and the lower mold and the upper mold for molding the upper surface side of the washbasin are combined,
Inject sludge into the casting space provided between the upper mold and the lower mold in a state of standing with the back surface of the upper mold and the lower mold facing the bottom,
After forming a washbasin base by infiltrating mud on the surface of the mold,
With the middle mold for forming the back hanger attached to the back surface of the washbasin substrate, the lower mold is removed, the middle mold is removed from the washbasin substrate, and the backside of the washbasin substrate is supported to remove the upper mold. It is to mold.

[0010]

According to the present invention, the middle mold is detachably attached to the lower mold, and when the lower mold is removed from the lower mold while the washbasin substrate is held in close contact with the upper mold, the middle mold is lowered. Only the lower mold is removed from the washbasin body while being separated from the mold and attached to the back surface of the washbasin substrate. Since the middle die is for forming only the concave portion of the back hanger portion, it is much smaller and lighter than the back die for forming the entire back surface of the conventional washbasin. Therefore, the middle mold can be easily removed from the back surface of the washbasin base while the closet of the washbasin base is kept close to the upper mold and the standing state with the back side facing the bottom is maintained. Then, after subjecting the lower surface, the side surface and the back surface of the washbasin substrate to a required finishing treatment, while supporting the back surface of the washbasin substrate with an appropriate support, while keeping the washbasin substrate in an upright state,
Remove the upper mold. At this time, the mold releasing direction of the upper mold is a substantially horizontal direction in which the burden of labor is light, so that the mold removing work is easy. Further, when the mold is released from the mold, there is no need to change the posture of the base of the washbasin at all, so workability is good.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings showing the embodiments. FIG. 1 shows a mold 1 for a washbasin according to the present invention, which comprises an upper mold 2 forming an upper surface side of a washbasin, a lower mold 4 forming side surfaces, a lower surface and a back surface side of the washbasin, and Molding surface 4a on the back side of the washbasin in the lower mold 4
And a middle mold 3 for forming a back hanger part which is detachably attached to the. The pot surface forming portion 2b of the upper mold 2 is configured to be separable from the main body 2a because the conventional molding mold 4 is used.
0 (see FIG. 11). Also, upper mold 2 and middle mold 3
The abutting portions of the and
It is desirable to provide a fitting structure such as.

The mold 1 according to the present invention does not use a conventional back mold, but is substantially composed of an upper mold 2 and a lower mold 2.
The most distinctive feature is that only the back hanger on the back of the washbasin is formed by the middle mold 3 that is detachably attached to the back forming surface 4a of the washbasin of the lower mold 4. Since this middle mold 3 is much smaller and lighter than the conventional back mold, it can be easily removed from the mold without changing the posture of the washbasin base, that is, while keeping it in an upright state, as described later. It has the advantage of being able to

Next, a method of molding the washbasin according to the present invention will be described. First, as shown in FIG. 2, an upper mold 2 and a lower mold 4 having a middle mold 3 mounted at a predetermined position on a molding surface are combined to form a molding mold 1 having a casting space 5 therein. And stand up. Then, as shown in FIG. 3, the slurry 6 is injected into the casting space 5 in the molding die 1, and the molding surface of the molding die 1 is inked as shown in FIG. 6 is discharged to obtain a washbasin base 7 as shown.

Subsequently, as shown in FIG. 5, the washbasin base 7 is brought into close contact with and held by the upper mold 2 to stand up, and the lower mold 4 is removed. At this time, the middle mold 3 is attached to the back surface of the washbasin substrate 7 and separated from the lower mold 4. Subsequently, while maintaining the washbasin base 7 in the upright state by the upper mold 2, the middle mold 3 is released from the mold as shown in FIG. Since the middle mold 3 is much smaller than the conventional back mold, it can be easily removed without changing the posture of the washbasin base 7.

After the lower mold 4 and the middle mold 3 are removed from the mold, the washbasin base 7 is subjected to necessary processing such as drilling a drainage port. Then, as shown in FIG. 7, after the back surface of the washbasin substrate 7 is supported by an appropriate pedestal 8, the main body 2a of the upper mold 2 and then the bowl surface forming portion 2b are demolded. After that, the upper surface side of the washbasin substrate 7 is finished, and the finished washbasin 7 is transported to the subsequent drying step, glaze step, and firing step to complete the manufacture of the intended washbasin.

[0016]

According to the present invention, in manufacturing a washbasin having a back hanger portion, the posture of the base of the washbasin is changed by using a substantially half-molding die consisting of an upper mold and a lower mold. The mold can be released from the mold while being held in the upright state without performing. Moreover, the lower mold and the upper mold are both demolded in the horizontal direction. Therefore, unlike the prior art, there is no need to rotate the washbasin substrate or lift the molding die upward when demolding, so that the work load is significantly reduced. In addition, since it is not necessary to change the posture of the washbasin base, it is possible to automate a considerable part of the washbasin molding process, which conventionally relied on manual work, resulting in a dramatic improvement in productivity. Is brought about.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an example of a mold of a washbasin according to the present invention, in which an upper mold, a lower mold and a middle mold are disassembled and shown.

FIG. 2 is a side sectional view showing an example of the method of molding the washbasin according to the present invention, showing a state in which the molding dies are united to form a casting space.

FIG. 3 is a side sectional view showing an example of the method of molding the washbasin according to the present invention, showing a step of injecting sludge into the casting space.

FIG. 4 is a side sectional view showing an example of a method for forming a washbasin according to the present invention, showing a step of inking a washbasin substrate.

FIG. 5 is a side cross-sectional view showing an example of the method of molding the washbasin according to the present invention, showing the step of removing the lower mold.

FIG. 6 is a side sectional view showing an example of the method for molding the washbasin according to the present invention, showing a step of removing the middle mold.

FIG. 7 is a side cross-sectional view showing an example of the method of molding the washbasin according to the present invention, showing the step of supporting the back surface of the washbasin substrate and removing the upper mold.

FIG. 8 is a perspective view showing a mounting structure of a washbasin including a back hanger portion, showing the washbasin and a bracket fixed to a wall surface.

FIG. 9 is a plan view showing a mounting state of a washbasin including a back hanger portion.

FIG. 10 is a side sectional view showing a mounting structure of a washbasin including a back hanger portion, taken along the line AA in FIG. 9.

FIG. 11 is a side sectional view showing a mold for a conventional washbasin, which is disassembled into an upper mold, a lower mold and a back mold.

FIG. 12 is a side sectional view showing a conventional method for forming a washbasin and showing a state in which the forming dies are combined to form a casting space.

FIG. 13 is a side sectional view showing a conventional method of forming a washbasin and showing a step of injecting sludge into a casting space.

FIG. 14 is a side cross-sectional view showing a conventional method of forming a washbasin and showing a step of depositing a washbasin substrate.

FIG. 15 is a side sectional view showing a conventional method for forming a washbasin and showing a step of removing the lower die.

FIG. 16 is a side cross-sectional view showing a conventional method of forming a washbasin and showing a state in which a base receiver is mounted on a washbasin base material.

FIG. 17 is a side sectional view showing a conventional method of forming a washbasin and showing a state in which the washbasin body is rotated 90 degrees to change its posture.

FIG. 18 is a side sectional view showing a conventional method of forming a washbasin and showing a step of removing the upper die and the back die.

FIG. 19 is a side sectional view showing a conventional method of forming a washbasin and showing a state in which the washbasin body after demolding is erected while supporting the back surface thereof.

[Explanation of symbols]

 1 ... Mold 2 ... Upper mold 3 ... Medium mold 4 ... Lower mold 4a ... Rear molding surface 5 ... Casting space 6 ... Sludge 7 ... Basin base 8 ... Cradle 10 ... Basin 11 ... Basin back 12 ... Back hanger part 13 ... Wall surface 14 ... Bracket 15 ... Locking part

Claims (2)

[Claims] 1. A mold for molding a basin having a back hanger portion formed on a rear surface thereof, the recess being opened obliquely downward from front to rear, and an upper mold for molding an upper surface side of the basin. A lower mold for molding a side surface, a back surface and a lower surface side of the washbasin, and a middle mold for forming a back hanger portion detachably attached to a molding surface of the back surface of the washbasin in the lower mold. Mold for washbasin. 2. A method for molding a washbasin having a back hanger portion, which is formed on a rear surface of the back hanger portion, which is opened obliquely downward from the front to the rear. Attach the middle mold for forming the back hanger part to the molding surface on the back of the washbasin in the lower mold, and combine the lower mold with the upper mold that molds the upper surface of the washbasin. After pouring the sludge into the casting space provided between the upper mold and the lower mold with the back surface of the mold standing upright and allowing the slurry to infiltrate the mold surface to form the washbasin substrate, The lower mold is demolded with the back hanger forming middle mold attached to the back surface of the vessel base, the middle mold is removed from the washbasin base, and the backside of the washbasin base is supported to demold the upper mold. A method for forming a washbasin, comprising: