KR20130053057A - Manufacturing method of ceramic screw cap - Google Patents

Abstract

PURPOSE: A screw cap ceramic manufacturing method is provided to simplify manufacturing and reduce manufacturing costs by molding a screw cap in one time by press-molding a press mold. CONSTITUTION: A ceramic screw cap manufacturing method comprises the following steps: preparing an external frame which includes an inner space which corresponds to an external shape of an upside-down ceramic screw cap to be completed(S1); inserting the moldable powder containing moisture into the inner space of the external frame(S2); moving a press mold downward to be inserted into the inner space of the external frame and forming a cap before completion by press-molding the moisture contained powder(S3); counter-rotating the press mold and upwardly moving the press mold at the same time to remove the press mold from the external frame(S4); drying the cap before completion in which a screw unit is formed in an inner side(S5); and removing the external frame from the dried cap before completion(S6). [Reference numerals] (S1) External frame preparing step; (S2) Moisture containing powder putting step; (S3) Press mold inserting step; (S4) Press mold removing step; (S5) Drying step; (S6) External frame removing step

Description

Manufacturing method of ceramic screw cap

The present invention relates to a method for manufacturing a porcelain screw cap, and more specifically, to a screw portion formed on the outer surface of the porcelain container inlet portion, which can be screwed together, to seal or open the inner space of the porcelain container, the screw portion on the inner surface It relates to a method of manufacturing a porcelain screw cap having a.

In general, various containers are used to store alcohol, other beverages, and food. Among them, porcelain containers or porcelain bottles, in addition to being used for appreciation, are favored for containing foods and drinks including alcoholic beverages, which are generally regarded as precious because of their high-quality appearance and no harm to the human body. have.

Porcelain containers, including porcelain bottles used for this purpose, are made in the form of a circular opening with its entrance in the manufacturing process. In order to use food, etc., it is generally necessary to seal the inside. For this purpose, a method of injecting a cork stopper into the entrance of a ceramic container or combining a stopper made of plastic is mainly used.

However, when the cork stopper is used, not only opening and closing is not easy, but repeatedly closing and opening the cork stopper may damage the cork stopper and may not be completely sealed. In addition, there is a disadvantage that damage to the luxury appearance of the porcelain container due to the golk stopper.

In addition, in the case of using a stopper made of plastic, the container body is made of porcelain to provide a luxurious appearance, but when the stopper is made of plastic, it gives a sense of heterogeneity to the overall appearance, thereby There is a risk of damage to luxury.

In the case where the main body is made of porcelain, it is preferable that the stopper is also made of porcelain. Thus, the stopper is made of porcelain material is disclosed in the registered patent No. 092706 filed by the applicant. According to this prior art, a screw portion that can be screwed with a screw portion formed on the outer surface of the inlet portion of the porcelain container is formed on the inner surface, the lower portion of the method for manufacturing a porcelain screw cap of the porcelain material of the open shape, Outline frame preparation step; Plastic clay injection step; Intermediate stage stopper forming step; Screw forming step; Drying step; And a technique for manufacturing a porcelain screw cap is disclosed, including removing the outline frame.

However, the prior art discloses a process of forming a stopper using an intermediate stopper shaping step for forming an intermediate stopper and a thread forming step for forming a screw in a molded intermediate stopper to form a stopper. , There are problems that the process is somewhat complicated because two processes are performed to manufacture a stopper with a threaded portion.

In addition, there is a problem in that the production mechanism requires a lot of tools for manufacturing, such as a separate molding machine for forming the intermediate stage stopper and a rotary mold for molding the screw portion is required to increase the overall manufacturing cost.

Korean Patent Registration No. 1073079

The present invention has been made to solve the above-mentioned difficulties, and an object thereof is to provide a simple method of manufacturing a stopper having a threaded portion formed in a ceramic material on an inner side thereof.

An object of the present invention is to provide a ceramic screw cap manufacturing method capable of mass-producing a ceramic stopper having a screw portion on its inner side at a low cost.

The ceramic screw cap manufacturing method of the present invention for achieving the above object, the screw portion that can be screwed with the screw portion formed on the outer surface of the inlet portion of the ceramic container is formed on the inner surface, the lower portion of the porcelain of the open shape A method of manufacturing a porcelain screw cap of a material, the top of which is open, the outer frame preparation step of preparing an outer frame having an inner space corresponding to the outer shape of the porcelain screw cap to be completed upside down; A water-containing powder input step of introducing a powder that is moldable and containing water into the inner space of the outer mold; The press mold provided with a protrusion on its outer surface moves downward without rotation to be inserted into the inner space of the outer mold, and the water-containing powder is press-molded to form a stopper before completion, and the stopper before opening is opened. Pressed insert is formed so that the lower portion is facing upward and the threaded portion is formed on the inner surface of the stopper before completion; A press mold removing step of removing the press mold from the outer mold by moving the press mold inserted into the outer mold at the same time as the reverse rotation; Drying step of drying the stopper before completion of the thread formed on the inner surface; And an outer mold removing step of removing the outer mold from the dried complete stopper.

In the ceramic screw cap manufacturing method, the press mold may be a size corresponding to the inner space of the stopper before completion.

In the method of manufacturing the ceramic screw cap, a press mechanism for pressing the press mold in a downward direction may be disposed above the press mold.

In the method of manufacturing the ceramic screw cap, the press mold is a truncated conical shape, the lower side is flat, the protrusion provided on the outer surface of the press mold, the same shape as the screw portion formed on the outer surface of the inlet of the ceramic container It may include.

In the porcelain screw cap manufacturing method, the porcelain screw cap manufactured by the porcelain screw cap manufacturing method may have a truncated conical shape, the diameter of which is increased as the inner space goes down.

In the porcelain screw cap manufacturing method, after the complete drying step, the first firing step of the first firing the stopper before completion, the oiling step of applying glaze to the outer surface of the first firing finished plug, and the second after the oiling step Firing may further include a secondary firing step of completing the porcelain screw cap.

According to the method of manufacturing the porcelain screw cap according to the present invention, it is possible to obtain the effect that it is possible to mass-produce porcelain screw cap made of porcelain material and the threaded portion on its inner surface.

In addition, according to the method of manufacturing the ceramic screw cap according to the present invention, by press molding the press mold, the screw cap can be molded at a time, so that the production is simple and the manufacturing cost can be reduced.

1 and 2 are respectively a schematic cross-sectional view and a perspective view of the porcelain screw cap manufactured by the porcelain screw cap manufacturing method according to the embodiment of the present invention, and the inlet portion of the porcelain container to which the porcelain screw cap is screwed;
3 is a view illustrating a method of manufacturing a porcelain screw cap of an embodiment according to the present invention;
4 to 6 are views for explaining the embodiment illustrated in FIG. 3,
Fig. 7 is a cross-sectional view of the ceramic screw cap completed by the manufacturing method of Fig. 3 being placed upside down.

The ceramic screw cap manufacturing method of an embodiment according to the present invention will be described in detail with reference to the accompanying drawings.

The porcelain screw cap manufactured by the porcelain screw cap manufacturing method of this invention is a shape in which the screw part is formed in the inner surface, and the lower part is open. The screw portions may be screwed into each other in a shape corresponding to the screw portion formed on the outer surface of the inlet portion of the ceramic container.

However, the porcelain screw cap manufactured by the porcelain screw cap manufacturing method of the present invention is intended to be mainly screwed into a vessel made of porcelain, but is not necessarily coupled to a vessel made of porcelain. In other words, the porcelain screw cap may be screwed to the container if the thread is formed on the outer surface of the inlet even if the container is made of a material other than porcelain material, for example, glass plastic.

1 and 2 show a porcelain screw cap 10 produced by the porcelain screw cap manufacturing method of this embodiment, and a porcelain container 30 in which the porcelain screw cap 10 is screwed together. The porcelain container 30 is provided with the inlet part 20 in the upper end. Porcelain containers are also called porcelain bodies. The shape of the ceramic container can be variously modified into a jar shape, a cylindrical shape, and the like.

The inlet portion 20 has a screw portion 22 screwed with the screw portion 12 of the porcelain screw cap 10 on its outer surface. In the present embodiment, although the inlet 20 is illustrated as being coupled to the container 30, in another example, the inlet having a screw part may be integrally formed with the container.

The ceramic screw cap manufacturing method of this embodiment relates to the manufacturing method of the ceramic screw cap 10 suitable for being screwed to the screw part 22 of the inlet part 20 of this container 30.

Porcelain screw cap manufacturing method of the present embodiment, the outer frame preparation step (S1), the water-containing powder input step (S2), the press mold insertion step (S3), the press mold removal step (S4), drying step (S5) and the appearance It comprises a frame removing step (S6).

The outer frame preparation step (S1), the upper part is open, the outer mold having an inner space corresponding to the outer shape of the state that the porcelain screw cap 10 (see Figure 1) to be completed upside down (see Figure 7) 40 is a step to prepare.

In the case of the present embodiment, since the ceramic screw cap to be manufactured is a truncated cone shape, the inner space of the outer mold 40 is also a truncated cone shape corresponding to the truncated cone shape, but the present invention is not limited thereto. That is, when the outer shape of the porcelain screw cap is deformed into a cylinder, a flat polygonal column or an ellipse, the outer frame may be prepared to have an inner space corresponding thereto. On the other hand, the outer shape of the outer frame may be variously modified as necessary. In addition, although the inclined surface of the truncated cone-shaped inner space is shown to have a slightly larger inclination angle in the drawing of FIG. 4, the inclination angle may be insignificant as shown in FIG. The same applies to FIGS. 5 and 6, and the shape of the press mold also shows the truncated conical shape somewhat exaggeratedly, but may have a slight inclination angle.

In the present embodiment, the outer mold 40 is made of a rigid material to withstand the pressing pressure of the press mold 50. Specifically, the outer mold 40 may be a metal mold, but is not limited thereto. Various materials may be used.

Next, the water-containing powder input step (S2) is performed. Water-containing powder input step (S2) has a moldable viscosity in the inner space of the outer mold 40, the moisture-containing powder (10a), for example, containing water so that it can be easily molded by the press mold 50 Soil, ground or clay, is added to the stage.

On the other hand, the reference numeral '10a' refers to the clay before the processing, according to the processing step of the clay, '10b' is pressed to the 'pre-finish stopper' and '10' to indicate the finished porcelain screw cap.

The following press molding insertion step (S3) is a step of forming a stopper before completion by pressing the water-containing powder 10 a located in the outer mold 40 by the press mold 50. The press mold 50 having the protrusion 52 on the outer side is moved downward without rotation to be inserted into the inner space of the outer mold 40. Accordingly, the water-containing powder (10a) is press-molded so that the stopper (10b) before completion. At this time, the stopper 10b before completion is molded so that the open bottom faces upward, and the threaded portion 12 is formed on the inner surface of the stopper 10b before completion. On the other hand, the press mold 50 has to have a strong pressing pressure to mold the moist powder 10a, so the press mechanism 50 for pressing the press mold 50 downwards on the upper side of the press mold 50. 60 is disposed. In addition, since the outer mold 40 must withstand a strong press pressure, as described above, it is preferable that the outer mold 40 is a solid metal mold.

When the press mold forming step S3 is completed, the moisture-containing powder 10a is molded into a stopper 10b before completion as illustrated in FIG. 5. At this time, the screw portion 12 is formed on the inner surface of the stopper before completion, and the stopper 10b before completion is in a state in which the up and down direction is inverted. That is, the open bottom of the porcelain screw cap to be finished is placed facing upwards and processed.

Next, as illustrated in FIG. 6, the press mold removing step S4 is performed.

The press mold removing step is a step of removing the press mold 50 inserted into the outer mold 40 from the outer mold 40. On the other hand, since the screw portion 12 is already formed on the inner surface of the stopper before completion, in order not to damage the formed screw portion 12, it is not possible to lift the lower mold 50 directly as it is, but the press mold At the same time as 50 is rotated in the outer mold 40 and moved upwards, it is removed from the outer mold 40.

5 and 6, the press mold 50 moves directly downward in the outer mold 40 without additional rotation, and reverses after the stopper 10b is completed, and then upwards. A simple and simple operation of moving to make the stopper 10b before completion.

In the present embodiment, the press mold 50 is a size corresponding to the inner space of the stopper 10b before completion. That is, the press mold 50 has a truncated conical shape as a whole and its lower side is flat.

In addition, the protrusion part 52 provided in the outer side surface of the press mold 50 has the same shape as the screw part 22 formed in the outer side surface of the inlet part 20 of a ceramic container. However, the protrusion 52 has the same shape as the threaded portion 22 formed on the outer side surface of the inlet 20, but the volume is larger than the threaded portion 22 as a whole. Because, before completion of the stopper (10b) after drying, the volume is reduced, so that is made larger than the final size in consideration of this. Typically, the water-containing powder of the present invention is reduced by 12-15% in volume through drying.

Moisture-containing powder is reduced in size as the total volume is reduced as the moisture in the drying process is taken out. That is, when the stopper is completely dried during the subsequent process, the amount of the water-containing powder is determined in consideration of the reduced volume, and accordingly, the size of the inner space of the outer mold 40 and the press mold ( The outer diameter of the 50 and the size of the protrusion 52 is determined.

Next, the drying step (S5) is performed. The drying step S5 is a step of drying the stopper 10b before completion, in which the screw portion 12 is formed on the inner surface thereof. After the drying step S5, the outer mold removing step S6 is performed to remove the outer mold 40 from the dried pre-finished stopper.

In addition, in the present embodiment, after the drying step, the stopper before completion is subjected to the primary firing step of firing at first by applying a high temperature. The pre-fired stopper is subjected to the application step of applying glaze to the outer surface. In this case, the outer surface, as well as the outer surface is a concept that includes the shaving toward the inside formed with the threaded portion (12).

After the oiling step, a secondary firing step of applying heat at high or low temperatures is performed to complete the porcelain screw cap 10. The finished porcelain screw cap 10 shown in FIG. 7 is a cross-sectional view of the upside down state compared to FIG. 1.

On the other hand, the inner inner horizontal surface of the finished porcelain screw cap, the elastic member 15 made of an elastic material such as rubber, synthetic resin or silicone may be further provided. When the elastic member 15 is further provided, the sealing property between the porcelain screw cap 10 and the porcelain container 30 is further improved, and the upper end portion of the inlet portion 20 and the inner surface of the porcelain screw cap 10 are mutually inclined. This has the advantage of reducing damage that may occur at the contact points.

Hereinafter, the operation and effects on the ceramic screw cap manufacturing method of the present embodiment will be described.

According to the method of manufacturing the porcelain screw cap of the above-described configuration, it is possible to manufacture a porcelain screw cap made of porcelain material with a threaded portion formed on the inner surface thereof so that the screwed portion can be screwed to the porcelain inlet portion formed on the outer surface.

In the method of manufacturing the ceramic screw cap of the present embodiment, the press mold 50 is provided with a press mold 50 having a thread-like shape on its outer side, so that the press mold 50 is pressed into the outer mold. It is possible to form the screw 12 of the desired shape on the overall shape of the stopper 10b before completion, in particular, on the inner side, with a single operation of entering without rotation and reversing and reversing (upward movement) while applying the There is an advantage.

In addition, according to the method of manufacturing the porcelain screw cap of the present embodiment, even if the outer profile forms a cylindrical screw portion on the inner side of the stopper, the outer side can be manufactured in various shapes as desired, so that the porcelain container and the material have no appearance. Even with the advantage that it is possible to manufacture a consistent stopper.

In addition, according to the manufacturing method of the porcelain screw cap of the present embodiment, since it is possible to form the screw portion on the inner surface by a simple and constant process using a press mold, mass production of the porcelain screw cap of uniform quality is easy and the manufacturing cost There is an advantage that it is possible to lower.

Other manufacturing process that is not described is applied as is or appropriately modified as described in the previous embodiment.

 Meanwhile, in the method of manufacturing the porcelain screw cap of the present invention, the press mold may be variously modified in a shape corresponding to the shape of the porcelain screw cap to be manufactured and the shape of the screw portion to be formed on the inner side thereof. That is, the overall size and shape can be variously modified. In addition, the specific shape of the protrusion having the shape of the thread can be variously modified. That is, it may be a sharp shape or may be a gentle wave pattern.

If the press mold can form a threaded portion on the inner side of the porcelain screw cap, the transverse cross section is not necessarily circular. That is, the transverse cross section may not be circular, but may be manufactured in a shape in which the upper and lower arcs are removed, and a pair of circular spheres may be arranged to form a screw on both sides as if it is a dumbbell-like shape. The circular sphere of may be manufactured in a shape interconnected by the columnar member.

It is to be understood that the invention is not limited thereto and that the scope of the claims may be broadly construed to the extent that they can be reasonably interpreted by the claims of the present invention.

10 ... porcelain screw cap 10a ... moisture powder
10b ... Before completion stopper 12 ... Thread
15.Elastic member 20.Inlet
22 Screw thread 30 Container
40.Frame 50 ... Press Mold
52 Protrusions 60 Press Mechanism

Claims (6)

As a method of manufacturing a porcelain screw cap made of porcelain material of the open shape is formed on the inner surface of the screw portion that can be screwed with the screw portion formed on the outer surface of the inlet of the ceramic container,
An outer frame preparation step of preparing an outer mold having an inner space corresponding to an outer shape in which the upper part is opened and the porcelain screw cap to be completed is upside down;
A water-containing powder input step of introducing a powder that is moldable and containing water into the inner space of the outer mold;
The press mold provided with a protrusion on its outer side is moved downward without rotation to be inserted into the inner space of the outer mold, and the water-containing powder is press-molded to form a stopper before completion, and the stopper before opening is opened. Pressed insert is formed so that the lower portion is facing upward and the threaded portion is formed on the inner surface of the stopper before completion;
A press mold removing step of removing the press mold from the outer mold by moving the press mold inserted into the outer mold at the same time as the reverse rotation;
Drying step of drying the stopper before completion of the thread formed on the inner surface; And
Porcelain screw cap manufacturing method comprising a; the outer mold removing step of removing the outer mold from the dried stopper before completion. The method of claim 1,
The press mold, porcelain screw cap manufacturing method characterized in that the size corresponding to the inner space of the stopper before completion. The method of claim 1,
And a press mechanism for pressing the press mold downward in an upper side of the press mold. The method according to claim 2 or 3,
The press mold is in the shape of a truncated cone as a whole, the lower side of which is flat,
Protruding portion provided on the outer surface of the press-molded, porcelain screw cap manufacturing method characterized in that it comprises the same shape as the screw portion formed on the outer surface of the inlet of the ceramic container. The method according to claim 2 or 3,
Porcelain screw cap manufactured by the porcelain screw cap manufacturing method, porcelain screw cap manufacturing method, characterized in that the inner space of the conical shape that increases in diameter toward the bottom. The method of claim 1,
After the drying step, the first firing step of the first firing of the stopper before completion, the oiling step of applying glaze to the outer surface of the first firing before completion, and the second firing after the oiling step to complete the porcelain screw cap Porcelain screw cap manufacturing method characterized in that it further comprises a secondary firing step.

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