KR101469367B1 - manufacture method of ceramic ware for cap - Google Patents

Abstract

The present invention relates to a method for producing a pottery cap coupled with the top of a pottery container, wherein the method comprises: a first step of inserting a cap body having a cylindrical protrusion formed on the internal circumferential surface thereof in a fixing frame so that the opening of the cap body is exposed to the top of the fixing frame (S1); a second step of disposing a cut mold at the top of the opening of the cap body inserted in the fixing frame, wherein the cut mold has a projection processing groove formed in the bottom end of the outer circumferential surface thereof and a cutting blade unit formed in the bottom end outer circumference thereof (S2); a third step of inserting the cut mold in the opening of the cap body to be downwardly vertical with respect to the opening and cut the protrusion of the cap body by means of the cutting blade unit so that a coupling projection is formed on the inner surface of the cap body, wherein the protrusion disposed in the projection processing groove of the cut mold is not cut (S3); and a fourth step of ascending and withdrawing the cut mold inserted in the opening of the cap body in a vertical direction with respect to the opening and removing the cut protrusion from the inside of the cap body (S4). In the present invention, when the pottery cap made of pottery material is produced, a screw thread is not processed on the inner circumferential surface of the cap, and the coupling projection is equipped using a cut mold having a projection processing groove, so that a processing mold does not need to be rotated when the pottery cap is processed. Accordingly, the processability and workability of the pottery cap are improved, and the defect rate of the processed pottery cap can be minimized, so that the pottery cap can be made of pottery material and the overall appearance of the pottery container can be beautifully rendered.

Description

TECHNICAL FIELD The present invention relates to a method of manufacturing a ceramic lid,

The present invention relates to a method of manufacturing a ceramic lid, and it is possible to provide a lid with only a porcelain material by providing a locking protrusion in a lid of a ceramic material, thereby providing a beautiful appearance of the entire ceramic, And to improve the productivity and work efficiency by shortening the process.

Generally, ceramics refers to pots and ornaments baked in a fire at a high temperature to form earth, which can be divided into ceramics baked at a temperature lower than 1,300 ° C and porcelain baked at 1,300 to 1,500 ° C, Pottery and porcelain are called pottery.

Such ceramics can be classified into two types: manual work, rotational force of the spindle, injection and extrusion molding, pinching, coiling (modeling), modeling (terracotta) The molding method refers to making a circular object such as a plate using the rotational force of a rotating spinning wheel, which is manually or automatically.

The ceramics produced by this method are widely used as containers for storing foods because of their beautiful appearance and fine air inflow and outflow due to the characteristics of ceramics.

On the other hand, in order to use ceramics as a container, a porcelain lid for preventing foreign substances from entering into the container is indispensable. Conventionally, the porcelain lid is made of a synthetic resin material.

However, when the ceramic lid is made of a synthetic resin material, the container is made of ceramics and the lid is made of a synthetic resin material, so that there is a problem in that the quality of the whole of the ceramic is deteriorated.

That is, if the main body is made of ceramics, the porcelain lid must be made of ceramics to maintain the beauty and luxury of the entire porcelain vessel.

Accordingly, a separate screw cap made of a synthetic resin material is further provided inside the ceramic lid in order to cover the ceramic lid with a lid made of ceramics material and to connect the lid made of ceramic material to the upper part of the ceramic pot. So that the lid of the pottery can be tightly fastened to the top of the pottery by the screwing method between the container and the lid by the spiral portion.

A method of manufacturing a screw cap ceramics according to the prior art is disclosed in Japanese Laid-Open Patent Publication No. 10-2013-0053057, which discloses a method of manufacturing a screw cap ceramics which has an inner space corresponding to an outer shape of an upside- Comprising the steps of preparing an outer mold for preparing an outer mold, introducing a powder containing powder which is moldable in the inner space of the outer mold and containing moisture, a press mold having a protrusion on its outer surface, So that the water-containing powder is press-molded to form a pre-completion stopper. The pre-completion stopper is formed so that the open bottom is directed upwardly, and the pre- A press mold inserting step in which a threaded portion is formed on a side surface, a press mold inserted in the mold, A press mold removing step of removing the press mold from the mold by moving the press mold in an upward direction, a drying step of drying a finished pre-cap having a threaded portion formed on an inner side thereof, and a contour mold removing the mold from the dried pre- Removal step.

Such a conventional technique has the disadvantage that the press mold insertion step and the press mold removal step for forming the threaded portion in the side surface of the ceramic lid have to be additionally provided although the ceramics lid material is made of ceramics.

In addition, a press mold is inserted to form a screw portion on the inner surface of the cap before completion, and then the inserted press mold is rotated in the direction opposite to the spiral direction of the screw portion to be taken out to prevent the formed screw portion from being damaged. There is a problem that the threaded portion formed in the process of taking out is broken or cracked.

Korean Patent Publication No. 10-2013-0053057 (published on May 23, 2013) Korean Registered Patent No. 10-1073079 (Registered on October 6, 2011)

The present invention is characterized in that a fastening protrusion is provided on an inner circumferential surface of a lid of a pottery so that a pot lid and a pottery pot can be fastened together by a fastening protrusion and a workability and work efficiency are improved by a simple manufacturing process, The present invention provides a method of manufacturing a ceramic lid comprising the steps of:

According to another aspect of the present invention, there is provided a method for manufacturing a porcelain lid comprising the steps of pulling a lid body having a circular protrusion on an inner circumferential surface of the porcelain lid, A first step of drawing in such a manner as to be exposed to the upper side; A second step of disposing a cutting mold having a recess at the lower end of the outer circumferential surface and a cutting edge at the lower outer circumference at an upper portion of the opening of the lid body drawn into the fixture; The cutting die is pulled inward of the opening of the lid body and pulled down in the vertical direction with respect to the opening so that the projecting portion of the lid body is cut by the cutting blade portion, A third step of forming a fastening protrusion on the inner surface of the lid body; And a fourth step of lifting and pulling the cutting metal in the opening of the lid body in a direction perpendicular to the opening and then removing the cut protrusion from the inside of the lid body.

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The present invention is characterized in that when manufacturing a ceramic lid made of a ceramic material, the inner circumferential surface of the lid is not threaded and a fastening protrusion is provided by using a cutting die provided with a recessed portion with a recessed portion so as not to rotate the machined die Thereby improving the workability and workability of the lid of the pottery and minimizing the percentage of defects due to the processing of the pottery lid.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a process drawing showing a process of a method for manufacturing a ceramic lid according to the present invention.
2 is an exploded perspective view showing a first step of the method for manufacturing a ceramic lid according to the present invention.
3 is an exploded perspective view showing a second step of the method for manufacturing a ceramic lid according to the present invention.
4 is a perspective view showing a third step of the method for manufacturing the ceramic lid body of the present invention.
5 is a process configuration diagram showing a third step of the method for manufacturing the ceramic lid body of the present invention.
6 is an exploded perspective view showing a fourth step of the method for manufacturing the ceramic lid body of the present invention.
FIG. 7 is a perspective view showing a ceramic lid according to the present invention. FIG.
8 is a structural cross-sectional view showing a configuration of a ceramic lid according to the present invention.
FIG. 9 is a partially cutaway view of the ceramic lid fastened to the top of the ceramic container according to the present invention.

Hereinafter, other objects and features of the present invention will be apparent from the following description of embodiments with reference to the accompanying drawings.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

Hereinafter, a method for manufacturing a ceramic lid according to an embodiment of the present invention and a ceramic lid will be described in more detail with reference to the accompanying drawings.

In describing the method of manufacturing a porcelain lid according to the present invention, the components of the lid body and the lid body are not significantly different from those of the porcelain lid according to the present invention, Explain.

As shown in the figure, the method of manufacturing a ceramic lid according to the present invention includes a first step (S1) of pulling a lid body into a holding frame in manufacturing a ceramic lid to be fastened to an upper part of the ceramic container, (S2), a third step (S3) of processing the fastening protrusion, and a fourth step (S4) of removing the cut protrusion.

2, a lid body 10 having a circular protrusion 13 formed on an inner circumferential surface thereof is drawn into a fixing frame 30, and the opening 12 of the lid body 10 is inserted into the lid body 10, To be exposed to the upper side of the fixed frame 30.

At this time, the lid body 10 formed with the protruding portion 13 on the inner peripheral surface is processed in the same manner as that for processing the ceramic lid, and a detailed description thereof will be omitted.

Although not shown in the drawing, the fixed frame 30 is fixed by using a separate jig for holding the fixed frame 30 so that the fixed frame 30 does not move.

3, the second step S2 includes a step of forming a recess 41 at the lower end of the outer circumferential surface of the upper part of the opening 12 of the lid body 10, which is drawn into the fixed frame 30, And a cutting die 40 having a cutting edge portion 42 at the outer periphery thereof.

The cutting edge portion 42 of the cutting die 40 is brought into close contact with the inner circumferential surface of the lid body 10 in the process of being drawn into the opening portion 12 of the lid body 10 pulled into the fixing frame 30 .

4 and 5, the cutting die 40 is drawn into the opening 12 of the lid body 10 and is moved in a direction perpendicular to the opening 12 The projecting portion 13 of the lid body 10 is cut by the cutting blade portion 42 to be separated from the inner peripheral surface of the lid body 10. [

At this time, the protruding portion of the cutting die 40 located in the groove 41 is not cut so that the fastening protrusions 21 and 22 are provided on the inner surface of the lid body 10.

That is, when the cutting edge portion 42 of the cutting metal mold 40 is vertically lowered against the lid body 10 while closely contacting the inner peripheral surface of the lid body 10, the lid body 10 The projection of the cutting die 40 located at the groove 41 is located at the inside of the cavity 41. Therefore, (Not shown).

Thus, the fastening protrusions 21 and 22 are formed on the inner surface of the lid body 10 by the uncut portions.

The lowest position of the cutting die 40 when the cutting metal 40 descends vertically with respect to the lid body 10 is determined by the position at which the protrusion 13 formed on the inner peripheral surface of the lid body 10 is cut This is to prevent the bottom surface of the lid body 10 from being cut by the cutting edge portion 42 of the cutting metal 40 by completely lowering the cutting metal mold 40 into the lid body 10 to be.

The fourth step S4 is a step of moving the cutting die 40 drawn into the opening 12 of the lid body 10 up and down in a direction perpendicular to the opening 12, And removing the protruded portion 13, which has been cut and removed, from the inside of the lid body 10.

That is, when the protrusion 13 is removed by the third step S3 and the fastening protrusions 21 and 22 are formed, the cut die 40 is vertically lowered into the lid body 10, The protruding portion 13 separated from the inner circumferential surface of the lid body 10 by the cutting edge portion 42 of the cutting die 40 and falling on the bottom of the lid body 10 is inserted into the lid body 10 10).

7 and 8, the ceramic lid according to the present invention includes a lid body having an opening formed at one side thereof so as to be covered and fastened to an upper portion of the ceramic container, and a fastening protrusion provided on an inner circumferential surface of the lid body, (10) is further provided with a fitting groove portion (11) on the inner bottom circumferential portion thereof.

The fastening protrusion 20 includes two first fastening protrusions 21 and 21 which are positioned on the inner surface of the upper end of the opening 12 of the lid body 10 so as to face each other, And second fastening protrusions 22 and 22 located between the two first fastening protrusions 21 and 21 so as to face each other on the inner surface of the upper end of the opening 12 of the first fastening protrusion 21.

The fitting groove 11 provided in the inner bottom of the lid body 10 is formed such that when the cushioning body such as silicone is inserted into the inner bottom of the lid body 10, .

Since the ceramic lid of the present invention is made of ceramics, the lid of the present invention can be made of ceramics so that the integrity of the ceramics container can be emphasized, The feeling can be further improved.

As shown in FIG. 9, the fastening protrusions 20 are spaced at equal intervals from the upper outer peripheral surface of the ceramic container 50 in the course of fastening the lid body 10 to the upper portion of the ceramic container 50 The lid body 10 is firmly fastened and fixed to the upper portion of the ceramic container by being fastened to the projections 51. Since the fastening protrusion 20 is not formed in a threaded shape, the coupling operation with the ceramic container is simplified.

That is, the fastening protrusion 20 is formed by the first fastening protrusion 21 and the second fastening protrusion 22, and the first fastening protrusion 21 and the second fastening protrusion 22 are formed in the lid body 21. [ A protruding body 23 protruding from the inner surface of the upper end of the opening 12 of the cover body 10 and extending from both sides of the protruding body 23 and being narrower toward the protruding body 23 from the inner surface of the lid body 10 The protruding bodies 24 are spaced apart from the protruding bodies 23 such that the protruding bodies 23 are located at the lower ends of the protrusions 51 spaced equally from the ceramic container 50 When the lid body 10 is rotated in one direction in a state of being positioned between the projections 51 of the ceramic container 50, the protrusions 51 of the ceramic container 50 and the protruding body 23 are engaged with each other, 10 can be securely fastened to the ceramic container 50.

When the lid body 10 is rotated so that the protruding body 23 is located at the lower end of the protrusion of the ceramic container, the porcelain container (or the container body) The projecting body 51 is prevented from being caught by the projecting body 23.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains.

Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention

S1: first process S2: second process
S3: Third step S4: Fourth step
10: lid body 11: fitting groove
12: opening portion 20: fastening projection portion
21: first fastening protrusion 22: second fastening protrusion
23: protruding body 24: inclined surface

Claims (3)

In manufacturing a ceramic lid to be fastened on top of a ceramic container,
A first step (S1) of pulling a lid body having a circular protrusion on an inner circumferential surface of the lid body so that an opening of the lid body is exposed to the upper side of the fixed body;
A second step (S2) of placing a cutting metal mold having a recess at the lower end of the outer circumferential surface and a cutting edge at the lower outer circumference at an upper portion of the opening portion of the lid body drawn into the fixture;
The cutting die is pulled inward of the opening of the lid body and pulled down in the vertical direction with respect to the opening so that the projecting portion of the lid body is cut by the cutting blade portion, A third step (S3) of forming the fastening protrusion on the inner surface of the lid body;
Further comprising a fourth step (S4) of lifting and withdrawing the cutting metal in the opening portion of the lid body in a vertical direction with respect to the opening portion and then removing the cut protruding portion from the inside of the lid body. Method of manufacturing lid.
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