Ceramic cup internal thread production process

Abstract

The invention belongs to the technical field of ceramic cup manufacturing, and particularly discloses a ceramic cup internal thread production process which comprises the following steps: designing and modeling; manufacturing a plaster mold; manufacturing a plastic mold; the plastic mold and the plaster mold are installed on an upper supporting tool and a lower supporting tool of a rolling forming machine respectively; putting the ceramic blank into a plaster mold; the plaster mold and the plastic mold are driven by the rolling forming machine to rotate at the same time, the plaster mold and the plastic mold rotate in the same direction at the same speed, internal threads of ceramic blanks in the plaster mold can be extruded and formed at a time, and the ceramic blanks with the internal threads are formed. The ceramic cup internal thread production process has the advantages of being high in production efficiency, stable in product quality and the like, ceramic internal thread products are directly produced through the one-time rolling forming technology, the manufacturing and machining time is shortened, the product production efficiency is improved, the technological process is optimized, and production links are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ceramic cup manufacturing, in particular to a production process for inner screw threads of ceramic cups. Background Art

[0002] With the development of science and technology and the upgrading of industry, the field of ceramic manufacturing plays an increasingly important role in the national economy and people's lives. The so-called "ceramic" is a plate-shaped or block-shaped ceramic product made of clay into a shape, made of clay or other inorganic non-metallic raw materials, and processed by molding, sintering and other processes to decorate and protect the walls and floors of buildings. After drying, it is heated to a certain degree to harden it. With the development of ceramic cups, the application is becoming more and more extensive. However, the existing ceramic cup manufacturing process has certain limitations. For example, the shape is limited by the process, and only the outer screw thread cup cover can be made. It is not easy to make the ceramic cup body with inner screw thread. If you want to achieve the ideal effect, you need to process multiple times, the production efficiency is low, the product density is unstable, the defective rate is high, the production time is long and the material is wasted. Therefore, it is of great practical significance to study a new type of ceramic cup inner screw thread process. Summary of the invention

[0003] The purpose of the present invention is to provide a production process for internal thread of a ceramic cup, which has the advantages of high production efficiency and stable product quality. It adopts a one-time rolling forming technology to directly produce ceramic internal thread products, shorten the production and processing time, improve product production efficiency, optimize the process flow, and reduce production links.

[0004] To achieve the above object, the present invention provides a ceramic cup inner thread production process, comprising the following steps:

[0005] Step 1: Use design modeling software to design the ceramic cup product shape, and then make the corresponding plastic mold and plaster mold of the ceramic cup after finalization;

[0006] Step 2: Make a plaster mold. Mix plaster powder and water and stir evenly. After the master mold is aligned, pour the mixture of plaster powder and water on the required master mold. After the plaster solidifies, carefully peel the plaster mold from the master mold. Use a brush dipped in water and plaster powder to repair bubbles or uneven areas. The plaster mold is now complete.

[0007] Step 3: Make a plastic mold, use an injection molding machine to prepare polytetrafluoroethylene into the required plastic mold design style, and then use an engraving machine to carve threads and design patterns on the injection-molded plastic mold according to the design drawings;

[0008] Step 4: Install the plastic mold and the plaster mold on the upper and lower supports of the synchronous roll-forming machine respectively, and adjust the inclination, height and front and rear position of the supports on the roll-forming machine to ensure that the plastic mold can enter and exit the plaster mold;

[0009] Step 5, placing the ceramic blank into a plaster mold;

[0010] Step six, the plaster mold and the plastic mold rotate simultaneously under the drive of the roll forming machine. The plaster mold and the plastic mold rotate in the same direction and at the same speed, so that the internal thread of the ceramic blank in the plaster mold can be extruded and formed at one time, and the ceramic blank with the internal thread is formed.

[0011] Preferably, in step one, a plurality of plaster molds are provided, corresponding to corresponding design drawings.

[0012] Preferably, in step one, a plurality of plastic molds are provided, corresponding to corresponding design drawings.

[0013] Preferably, in step three, the diameter of the plastic mold is 30%-40% smaller than the inner diameter of the ceramic cup, and the height is 0.7-1 cm smaller than the body of the ceramic cup.

[0014] Preferably, in step 4, the inclination, height and front-back position of the support on the roll-forming machine are adjusted according to the design drawings to ensure that the plastic mold does not touch the ceramic embryo when leaving the plaster mold.

[0015] Preferably, in step six, the rotation speed of the two molds is 200-250 revolutions per minute, and the time is 40s-60s.

[0016] Preferably, in step six, after the ceramic embryo with internal screw threads is formed, the plaster mold is removed and left for 40 minutes. The humidity of the ceramic embryo decreases, and it becomes dry and shrinks, creating a gap with the plaster mold. The ceramic embryo can be directly pulled out from above to achieve demolding. If the ceramic embryo has a shape on the outside, the plaster mold is separated left and right, and the formed ceramic embryo can be taken out.

[0017] The advantages and beneficial effects of the present invention using the above-mentioned ceramic cup internal thread production process are:

[0018] 1. The present invention has the advantages of high production efficiency and stable product quality. It adopts one-time rolling forming technology to directly produce ceramic cup internal thread products, shorten the production and processing time, improve product production efficiency, optimize the process flow, and reduce production links.

[0019] 2. The plastic mold and the plaster mold of the present invention rotate simultaneously, and the ceramic internal thread can be formed at one time without the need for secondary operation. When the common existing technology is used to make internal thread ceramics, it can only be processed and formed multiple times or produced in the form of grouting (injecting ceramic blank slurry into the mold and demolding it after drying). The demolding failure rate is high, the time is long, the production efficiency is low, and there is a lot of material waste.

[0020] 3. When the present invention manufactures the internal thread ceramic cup, the space for shaping the ceramic is improved, and the product appearance is expanded from a single external thread form to an internal thread form. The ceramic internal thread cup body fits perfectly with the plastic cup cover to achieve the effect of sealing water.

[0021] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a plastic mold involved in a production process of internal thread of a ceramic cup of the present invention;

[0023] Figure 2 It is a schematic diagram of a gypsum mold involved in a production process of internal screw threads of a ceramic cup according to the present invention;

[0024] Figure 3 It is an exploded view of a gypsum mold and a ceramic blank involved in a production process of internal screw threads of a ceramic cup according to the present invention;

[0025] Figure 4 It is a schematic diagram of placing a plastic mold and a plaster mold in a roll forming machine involved in a production process for inner screw threads of a ceramic cup according to the present invention;

[0026] Figure 5 It is a schematic diagram of a ceramic cup body manufactured by a ceramic cup inner screw thread production process of the present invention;

[0027] Figure 6 This is a physical picture of a ceramic cup manufactured by a ceramic cup inner thread production process according to Example 1 of the present invention, wherein a is an overall picture of the ceramic cup, and b is a picture of the body of the ceramic cup. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 1. Plastic mold; 2. Thread; 3. Gypsum mold; 4. Ceramic blank; 5. Rolling forming machine. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0031] Unless otherwise defined, technical or scientific terms used in the present invention shall have the common meanings understood by one having ordinary skills in the field to which the present invention belongs.

[0032] Unless otherwise defined, the equipment, materials, etc. used in the present invention are all commercially available.

[0033] A ceramic cup inner thread production process comprises the following steps:

[0034] Step 1: Use design modeling software to design and draw the shape of the ceramic cup product. After finalizing, make the corresponding plastic mold 1 and plaster mold 3 of the ceramic cup; there are multiple plastic molds 1 and plaster molds 3, which correspond to the corresponding design drawings.

[0035] Step 2: Make a plaster mold 3, such as Figure 2 shown.

[0036] Prepare materials: plaster powder, water and possible additives such as lime or plaster bandages,

[0037] Making a mold: Mix gypsum powder and water, stir evenly, align the ends of the mother mold, and then pour the mixture of gypsum powder and water on the desired mother mold. After the gypsum solidifies, carefully peel off the gypsum mold 3 from the mother mold, use a brush dipped in water and gypsum powder to repair bubbles or uneven areas, and the gypsum mold 3 is completed.

[0038] Step 3: Make a plastic mold 1, such as Figure 1 As shown, an injection molding machine is used to prepare polytetrafluoroethylene into the required plastic mold 1 design style, and then the injection molded plastic mold is engraved with threads 2 and design patterns according to the design drawings by an engraving machine. A mold with external threads is made, which is used to form the internal thread structure of the ceramic body. Ensure that the accuracy and surface finish of the mold meet the design standards, as this directly affects the quality of the final product. The diameter of the plastic mold 1 is less than 30%-40% of the inner diameter of the ceramic cup, and the height is less than 0.7-1cm of the ceramic cup body.

[0039] Step 4: Figure 4 As shown, the plastic mold 1 and the gypsum mold 3 are respectively installed on the upper and lower supports of the synchronous roll-forming machine 5, and the inclination, height and front and rear position of the supports on the roll-forming machine 5 are adjusted to ensure that the plastic mold 1 can enter and exit the gypsum mold 3, and fit with the cup mouth of the gypsum mold 3 to produce a ceramic cup body with the required height and cup wall thickness.

[0040] Step 5, placing the ceramic blank 4 into the plaster mold 3. The ceramic blank 4 is placed in the plaster mold in a cylindrical shape.

[0041] Step 6: The synchronous roll forming machine 5 is provided with two servo motors at the top and bottom, which have the same drive and the same pulse, and can rotate the gypsum mold 3 and the plastic mold 1 at the same time under the drive of the machine. The gypsum mold 3 and the plastic mold 1 rotate at the same time under the drive of the roll forming machine 5, and the rotation direction of the two molds is counterclockwise, the speed is 200-250 revolutions per minute, and the time is 40s-60s. The gypsum mold 3 and the plastic mold 1 rotate in the same direction and at the same speed, and the inner thread of the ceramic blank 4 in the gypsum mold 3 can be extruded and formed at one time, and the ceramic blank with the inner thread can be formed (such as Figure 5The inclination, height and front-back position of the support on the roll forming machine are adjusted according to the design drawings to ensure that the plastic mold 1 does not touch the ceramic embryo 4 when leaving the plaster mold 3, thereby avoiding damage to the already molded ceramic embryo.

[0042] The double molds rotate at the same time, and the inner thread of the ceramic cup can be formed in one time without secondary operation. When making the inner thread ceramic cup with common existing technology, it can only be processed and formed multiple times or produced in the form of grouting (injecting ceramic blank slurry into the mold and demolding it after drying), which has a high demolding failure rate, a long time, low production efficiency and a lot of material waste.

[0043] While making the internal thread ceramic cup, the space for ceramic to be shaped is improved, and the product appearance is expanded from a single external thread form to an internal thread form. The ceramic internal thread cup body fits perfectly with the plastic cup cover (such as Figure 6 As shown), the water sealing effect is achieved.

[0044] After the ceramic embryo with internal screw thread is formed, the plaster mold 3 is removed, and the synchronous rolling forming machine 5 can continue production, which improves production efficiency. After being placed for 40 minutes, the humidity of the ceramic embryo decreases, it becomes dry and shrinks, and a gap is formed with the plaster mold 3, and the ceramic embryo can be directly pulled out from the top to achieve demolding; if the ceramic embryo has a shape on the outside, the plaster mold 3 can be separated from the left and right, and the formed ceramic embryo can be taken out (such as Figure 3 shown).

[0045] After demolding, the ceramic body is dried for two days and then bisque fired at a temperature of 850 degrees for five hours. After cooling down, the ceramic body is cleaned and dust removed, and then glazed (glaze thickness 0.3mm) after repairing. The glazed ceramic body is dried for 1 day and then fired at a high temperature of 1230-1240 degrees Celsius. The cup body with ceramic internal threads is completed. After subsequent inspection, the defective products produced during the firing process are eliminated, and the selected qualified products are assembled with the plastic cup lid, and a ceramic cup product with internal threads is completed (such as Figure 6 shown).

[0046] Example 1

[0047] A ceramic cup inner thread production process comprises the following steps:

[0048] Step 1: Use design modeling software to design and draw the shape of the ceramic cup product. After finalizing the design, make the corresponding plastic mold 1 and plaster mold 3 of the ceramic cup.

[0049] Step 2: making a plaster mold 3.

[0050] Prepare materials: plaster powder, water and possible additives such as lime or plaster bandages,

[0051] Making a mold: Mix gypsum powder and water, stir evenly, align the ends of the mother mold, and then pour the mixture of gypsum powder and water on the desired mother mold. After the gypsum solidifies, carefully peel off the gypsum mold 3 from the mother mold, use a brush dipped in water and gypsum powder to repair bubbles or uneven areas, and the gypsum mold 3 is completed.

[0052] Step 3: Make a plastic mold 1, use an injection molding machine to prepare polytetrafluoroethylene into the required plastic mold 1 design style, and then use an engraving machine to engrave the injection-molded plastic mold into threads 2 and design patterns according to the design drawings. The diameter of the plastic mold 1 is less than 30% of the inner diameter of the ceramic cup, and the height is less than 0.8 cm of the ceramic cup body.

[0053] Step 4: Install the plastic mold 1 and the plaster mold 3 on the upper and lower supports of the synchronous roll-forming machine 5 respectively, and adjust the inclination (91 degrees), height and front and back position of the supports on the roll-forming machine 5 to ensure that the plastic mold 1 can enter and exit the plaster mold 3, and fit with the cup mouth of the plaster mold 3 to produce a ceramic cup body with the required height and cup wall thickness.

[0054] Step 5: Place the ceramic blank 4 into the plaster mold 3; the filling amount of the ceramic blank 4 is 350 g. The ceramic blank 4 is placed in the plaster mold in a cylindrical shape.

[0055] Step 6: The synchronous roll forming machine 5 is provided with two servo motors at the top and bottom, which have the same drive and the same pulse, and can rotate the gypsum mold 3 and the plastic mold 1 at the same time under the drive of the machine. The gypsum mold 3 and the plastic mold 1 rotate at the same time under the drive of the synchronous roll forming machine 5, and the rotation direction of the two molds is counterclockwise, the speed is 200 revolutions per minute, and the time is 40s. The gypsum mold 3 and the plastic mold 1 rotate in the same direction and at the same speed, and the internal thread of the ceramic blank 4 in the gypsum mold 3 can be extruded and formed at one time, and the ceramic blank with the internal thread is formed.

[0056] Example 2

[0057] A ceramic cup inner thread production process comprises the following steps:

[0058] Step 1: Use design modeling software to design and draw the shape of the ceramic cup product. After finalizing the design, make the corresponding plastic mold 1 and plaster mold 3 of the ceramic cup.

[0059] Step 2: making a plaster mold 3.

[0060] Prepare materials: plaster powder, water and possible additives such as lime or plaster bandages,

[0061] Making a mold: Mix gypsum powder and water, stir evenly, align the ends of the mother mold, and then pour the mixture of gypsum powder and water on the desired mother mold. After the gypsum solidifies, carefully peel off the gypsum mold 3 from the mother mold, use a brush dipped in water and gypsum powder to repair bubbles or uneven areas, and the gypsum mold 3 is completed.

[0062] Step 3: Make a plastic mold 1, use an injection molding machine to prepare polytetrafluoroethylene into the required plastic mold 1 design style, and then use an engraving machine to engrave the injection-molded plastic mold into threads 2 and design patterns according to the design drawings. The diameter of the plastic mold 1 is less than 35% of the inner diameter of the ceramic cup, and the height is less than 0.7 cm of the ceramic cup body.

[0063] Step 4: Figure 4 As shown, the plastic mold 1 and the gypsum mold 3 are respectively installed on the upper and lower supports of the synchronous roll-forming machine 5, and the inclination (92 degrees), height and front and rear position of the supports on the roll-forming machine 5 are adjusted to ensure that the plastic mold 1 can enter and exit the gypsum mold 3, and fit with the cup mouth of the gypsum mold 3 to produce a ceramic cup body with the required height and cup wall thickness.

[0064] Step 5: Place the ceramic blank 4 into the plaster mold 3; the filling amount of the ceramic blank 4 is 400 g. The ceramic blank 4 is placed in the plaster mold in a cylindrical shape.

[0065] Step 6: The synchronous roll forming machine 5 is provided with two servo motors at the top and bottom, which have the same drive and the same pulse, and can rotate the gypsum mold 3 and the plastic mold 1 at the same time under the drive of the machine. The gypsum mold 3 and the plastic mold 1 rotate at the same time under the drive of the synchronous roll forming machine 5, and the rotation direction of the two molds is counterclockwise, the speed is 220 revolutions per minute, and the time is 50s. The gypsum mold 3 and the plastic mold 1 rotate in the same direction and at the same speed, and the internal thread of the ceramic blank 4 in the gypsum mold 3 can be extruded and formed at one time, and the ceramic blank with the internal thread can be formed.

[0066] Example 3

[0067] A ceramic cup inner thread production process comprises the following steps:

[0068] Step 1: Use design modeling software to design and draw the shape of the ceramic cup product. After finalizing the design, make the corresponding plastic mold 1 and plaster mold 3 of the ceramic cup.

[0069] Step 2: making a plaster mold 3.

[0070] Prepare materials: plaster powder, water and possible additives such as lime or plaster bandages,

[0071] Making a mold: Mix gypsum powder and water, stir evenly, align the ends of the mother mold, and then pour the mixture of gypsum powder and water on the desired mother mold. After the gypsum solidifies, carefully peel off the gypsum mold 3 from the mother mold, use a brush dipped in water and gypsum powder to repair bubbles or uneven areas, and the gypsum mold 3 is completed.

[0072] Step 3: Make a plastic mold 1, use an injection molding machine to prepare polytetrafluoroethylene into the required design style of the plastic mold 1, and then use an engraving machine to carve the threads 2 and the design pattern on the injection-molded plastic mold according to the design drawing. The diameter of the plastic mold 1 is less than 40% of the inner diameter of the ceramic cup, and the height is less than 1 cm of the ceramic cup body.

[0073] Step 4: Install the plastic mold 1 and the plaster mold 3 on the upper and lower supports of the synchronous roll-forming machine 5 respectively, and adjust the inclination (93 degrees), height and front and back position of the supports on the roll-forming machine 5 to ensure that the plastic mold 1 can enter and exit the plaster mold 3, and fit with the cup mouth of the plaster mold 3 to produce a ceramic cup body with the required height and cup wall thickness.

[0074] Step 5: Place the ceramic blank 4 into the plaster mold 3; the filling amount of the ceramic blank 4 is 310 g. The ceramic blank 4 is placed in the plaster mold in a cylindrical shape.

[0075] Step 6: The roll forming machine 5 is provided with two servo motors at the top and bottom, which have the same drive and the same pulse, and can rotate the gypsum mold 3 and the plastic mold 1 at the same time under the drive of the machine. The gypsum mold 3 and the plastic mold 1 rotate at the same time under the drive of the roll forming machine 5, and the rotation direction of the two molds is counterclockwise, the speed is 250 revolutions per minute, and the time is 60 seconds. The gypsum mold 3 and the plastic mold 1 rotate in the same direction and at the same speed, and the internal thread of the ceramic blank 4 in the gypsum mold 3 can be extruded and formed at one time, and the ceramic blank with the internal thread can be formed.

[0076] Therefore, the present invention adopts the above-mentioned ceramic cup internal thread production process, which has the advantages of high production efficiency and stable product quality. It adopts one-time rolling forming technology to directly produce ceramic internal thread products, shorten the production and processing time, improve product production efficiency, optimize the process flow, and reduce production links.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. A process for producing internal thread of a ceramic cup, characterized in that: The steps include: Step 1: Use design modeling software to design the ceramic cup product shape, and then make the corresponding plastic mold and plaster mold of the ceramic cup after finalization; Step 2: Make a plaster mold by mixing plaster powder with water and stirring evenly. After the master mold is aligned, the mixture of plaster powder and water is grouted on the required master mold. After the plaster solidifies, the plaster mold is peeled off from the master mold. A brush dipped in water and plaster powder is used to repair bubbles or uneven areas. The plaster mold is now complete. Step 3: Make a plastic mold, use an injection molding machine to prepare polytetrafluoroethylene into the required plastic mold design style, and then use an engraving machine to carve threads and design patterns on the injection-molded plastic mold according to the design drawings; Step 4: Install the plastic mold and the plaster mold on the upper and lower supports of the roll forming machine respectively, and adjust the inclination, height and front and rear position of the supports on the roll forming machine to ensure that the plastic mold can enter and exit the plaster mold; Step 5, placing the ceramic blank into a plaster mold; Step six, the plaster mold and the plastic mold rotate simultaneously under the drive of the roll forming machine. The plaster mold and the plastic mold rotate in the same direction and at the same speed, so that the internal thread of the ceramic blank in the plaster mold can be extruded and formed at one time, and the ceramic blank with the internal thread is formed.

2. A ceramic cup internal thread production process according to claim 1, characterized in that: In step one, a plurality of plaster molds are provided, corresponding to the corresponding design drawings.

3. A ceramic cup internal thread production process according to claim 1, characterized in that: In step one, a plurality of plastic molds are provided, corresponding to corresponding design drawings.

4. A ceramic cup internal thread production process according to claim 1, characterized in that: In step 3, the diameter of the plastic mold is 30%-40% smaller than the inner diameter of the ceramic cup, and the height is 0.7-1 cm smaller than the body of the ceramic cup.

5. A ceramic cup internal thread production process according to claim 1, characterized in that: In step 4, the inclination, height and front-back position of the support on the roll forming machine are adjusted according to the design drawings to ensure that the plastic mold does not touch the ceramic embryo when leaving the plaster mold.

6. A ceramic cup internal thread production process according to claim 1, characterized in that: In step six, the rotation speed of the plaster mold and the plastic mold is 200-250 revolutions per minute for 40s-60s.

7. The process for producing internal thread of a ceramic cup according to claim 1, characterized in that: In step six, after the ceramic body with internal screw threads is formed, the plaster mold is removed and left for 40 minutes. The humidity of the ceramic body decreases, it becomes dry and shrinks, and a gap is formed with the plaster mold. The ceramic body can be directly pulled out from the top to achieve demolding. If the ceramic body has a shape on the outside, the plaster mold is separated to the left and right, and the formed ceramic body can be taken out.

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