Glass mold blank modeling mold and manufacturing method

Abstract

The invention belongs to the field of mold manufacturing, solves the problem of how to improve the processing efficiency of a modeling mold, and relates to a glass mold blank modeling mold which comprises a mold main body formed by 3D printing and a plastic packaging film wrapping the surface of the mold main body, and the surface of the mold main body is provided with a hardened layer. The invention further relates to a manufacturing method of the glass mold blank modeling mold. The manufacturing method comprises the steps that S1, the mold body is formed through 3D printing; s2, heating the mold main body or standing the mold main body to harden the surface of the mold main body; and S3, the surface of the surface-hardened mold body is covered with a plastic packaging film through the hot film plastic packaging technology. The plastic packaging film not only plays a role in protecting the whole sand mold from being bumped and damaged, but also realizes the smooth and easy demolding of the outer surface of the sand mold, so that the mold for molding does not need to be coated with a demolding agent in the whole static pressure line molding process. And compared with a manual wood mold, the precision and efficiency are higher, and the manufacturing environment is more environment-friendly.

Description

Technical Field

[0001] The invention relates to the technical field of mold casting, in particular to a glass mold blank molding mold and a manufacturing method of the glass mold blank molding mold. Background Art

[0002] In traditional clay sand casting, among the molds used for modeling (iron molds, aluminum molds, and wooden molds), the only material that can adapt to rapid mold making is wood. In the glass mold industry, whether in China or abroad, the blank casting of glass molds is traditionally made of wood because of its small batch, multiple varieties, and short delivery time. Then, during the modeling process, the mold release agent is continuously applied on the wooden mold to achieve the modeling.

[0003] This traditional process of using wood to make modeling molds has the problem that the surface finish of the wood is not high. Even after being made by a wood carving machine, the surface will still be rough and uneven, and it is necessary to use sandpaper to polish the fine mold to correct it to a smooth surface. The entire production process relies on manual operation by workers, which is inefficient. The cutting and polishing processes of the wooden molds will generate a large amount of wood ash dust. The dust generated by wood ash and sandpaper is also explosive dust. Even if special dust collectors are installed, it is inevitable that employees will work in a dusty environment. Therefore, the entire wooden mold production process is relatively inefficient and the environment is not good. The produced wooden molds are also easily roughened by friction with the sand mold during the modeling process, resulting in the abnormal appearance of local sand in the mold, resulting in the risk of sand holes in the produced rough castings.

[0004] The use of wooden molds to make modeling molds can refer to existing Chinese patents: CN204953816U, CN102581221A, CN101823121A, CN102581215A.

[0005] The existing "CN115255284A" uses 3D printing to make sand cores, but the sand cores are directly used as part of the casting cavity during casting, which is not suitable for casting glass molds because part of the surface of the glass mold needs to be chilled. As mentioned above, when casting glass molds, wooden molds are usually used to shape sand molds, and then the sand molds are combined with chillers (for chilling and as part of the cavity) to cast glass molds. Summary of the invention

[0006] The purpose of the present invention is to provide a glass mold blank shaping mold and a manufacturing method, which solves the problem of how to improve the processing efficiency of the shaping mold.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is: The present invention provides a glass mold blank modeling mold, comprising a mold body formed by 3D printing and a plastic sealing film wrapped on the surface of the mold body, and the surface of the mold body has a hardening layer.

[0008] Preferably, the raw material used for 3D printing is resin sand.

[0009] Preferably, the thickness of the plastic film is 0.5-0.7 mm.

[0010] Preferably, the bottom of the mold body has a groove of a set size, and the glass mold blank modeling mold further comprises a template, on which a boss matching the groove is arranged.

[0011] A method for manufacturing a glass mold blank molding mold is also provided, comprising: S1. Forming the mold body through 3D printing; S2, heating the mold body or leaving the mold body still to harden the surface of the mold body; S3. The surface of the mold body after surface hardening is covered with a plastic film by using a hot film plastic sealing technology.

[0012] Preferably, 3D printing uses resin sand as raw material.

[0013] Furthermore, an oven is used for baking when heating the mold body.

[0014] Preferably, step S1 is performed at night, and steps S2 and S3 are performed during the day.

[0015] Preferably, when performing S1, a groove of uniform length, width and depth is printed on the bottom of the mold body, and a fixed boss is provided on the template corresponding to the modeling mold, and the boss matches the shape of the groove.

[0016] Preferably, the clay core used for chilling and shaping the glass mold blank film cavity is also formed by 3D printing to form the mold body and the covering plastic film. Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The glass mold blank modeling mold and manufacturing method of the present invention utilize 3D printing, that is, additive manufacturing technology to manufacture the mold body (or sand mold); after the mold body is manufactured, the surface of the mold body is hardened, and then a plastic sealing film is applied to the mold body using a hot film plastic sealing technology, which not only protects the overall sand mold from collision and damage, but also realizes the smooth and easy demolding of the surface of the sand mold, and realizes that during the entire static pressure line molding process, there is no need to apply any demolding agent to the molding mold. Compared with artificial wooden molds, the precision and efficiency are higher, and the manufacturing environment is more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings: Figure 1 2 is a schematic structural diagram of a glass mold blank molding mold embodiment 1 of the present invention; Figure 2 yes Figure 1 Side view of the middle mold body; Figure 3 It is a schematic diagram of the combination of the mold body and the template; Figure 4 It is a block diagram of the glass mold blank shaping mold manufacturing method of the present invention; Figure 5 1 is a schematic diagram of the structure of a glass mold blank molding mold of Example 2; The reference numerals are described as follows: 1. Mold body; 11. Groove; 2. Plastic film; 3. Template; 31. Boss. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Example 1 like Figure 4 As shown, this example introduces a disruptive alternative to traditional wood-made molding molds. It uses 3D printing technology to print a mold body 1 (referred to as a sand mold) made of resin sand hardening. The surface accuracy of the sand mold is within 0.3mm, which is much higher than that of the wood mold. And it is treated with surface finish and anti-collision protection. Surface finish means cleaning the floating sand on the surface of the sand mold. Then heat it in an oven at 150° for 10 minutes to achieve a surface strength of more than 4MP (if it is not an emergency mold, the oven can be omitted, as long as the natural aging exceeds 4 hours, the target strength can be achieved); then the mold body 1 is hot-filmed with a 0.6mm (0.5~0.7mm) thick plastic film 2 for the whole plastic sealing operation, which not only protects the overall anti-collision and damage of the sand mold, but also realizes the smoothness and easy demolding of the surface of the sand mold, so that there is no need to apply any demolding agent to the molding mold during the entire static pressure line molding process.

[0020] The glass mold blank molding mold for achieving the above purpose is: using 3D sand mold printing technology and hot film plastic sealing technology, using 3D sand mold printing to form a molding mold body, and then using hot film plastic sealing technology to vacuum seal the surface of the mold body 1, and covering it with a plastic sealing film 2. Compared with the original wood molding mold, the molding mold produced in this way is faster, more accurate and smooth. The structure of the obtained molding mold is as follows Figure 2 shown.

[0021] This example also proposes a new method for installing the mold plate: 1. Taking advantage of the high precision of 3D sand mold printing, a groove 11 with uniform length, width and height is directly punched at the bottom of the mold body 1, such as Figure 2 and Figure 3 As shown; (wooden molds cannot produce high-precision slots) 2. On the template 3 of the assembly mold body 1, a fixed boss 31 is made to fit in with the groove 11 at the bottom of the mold body 1, thereby realizing the slot-type assembly of the modeling mold, improving the accuracy and efficiency of the installation of the template 3, and reducing the risk of deviation caused by fixing with wooden nails after manual measurement. The finished product is as follows: Figure 1 shown.

[0022] Example 2 The modeling mold also uses a mud core, which is made of cold iron. The mud core is used to chill the inner cavity of the mold when casting the glass mold blank. When making the mud core, a wooden mold with the same shape as the mud core is used to make a clay sand mold, and then molten iron is poured into the clay sand mold to cast the mud core. Since the mud core has the same shape as the glass bottle, the mud core size requirements are high, and the traditional wooden mold manufacturing is manually made, and the size will have a large error. The use of 3D sand printing technology to make the wooden mold here can make the mud core size more accurate.

[0023] like Figure 5 As shown, the glass mold blank molding mold is in the shape of a mud core and is used to make a clay sand mold, and the clay sand mold is used to cast the mud core with molten iron. The molding mold also includes a mold body 1 and a plastic film 2 wrapped around the outer surface of the mold body 1. The surface of the mold body 1 is still hardened by heating or standing.

[0024] Compared with the existing wooden mold making technology, the beneficial effects of the above two embodiments are: 1. Greatly reduced the labor intensity and dust occupational disease risk of workers. The original mold production content that required 1 programmer + 5 wood mold workers to complete can now be completed by only 1 programmer + 1 auxiliary worker through the application of this technology; 2. The printing materials and closed printing environment used for 3D sand mold printing can realize dust-free and clean operation in the mold making room; 3. 3D sand mold printing technology can solve the problem of adjusting the font size of the logo in sync with the size of the mold, which is difficult to achieve on traditional wooden molds, and greatly improve the clarity and beauty of the logo on the appearance of the blank; 4. Plastic film technology makes the mold smooth and flat, further improves the demoulding effect, reduces the labor of molders and the dirty links of demoulding agents; 5. It can greatly improve the processing efficiency of modeling molds. In the past, wooden molds could only be polished by sanding machines, and one person could only make one set a day. However, when the "3D sand mold printing technology + hot film sealing technology" is used to make modeling molds, one person can make dozens of sets a day. Because of the night printing, workers only need to blow away the floating sand on the surface of dozens of sand molds printed by 3D after work during the day, and then seal them with hot film, and then they can install the mold plate for use.

[0025] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A glass mold blank molding mold, characterized in that: It comprises a mould body (1) formed by 3D printing and a plastic film (2) wrapped around the surface of the mould body (1), and the surface of the mould body (1) has a hardening layer.

2. The glass mold blank molding mold according to claim 1, characterized in that: The raw material used in 3D printing is resin sand.

3. The glass mold blank molding mold according to claim 1, characterized in that: The thickness of the plastic film (2) is 0.5-0.7 mm.

4. The glass mold blank molding mold according to claim 1, characterized in that: The bottom of the mold body (1) is provided with a groove (11) of a set size, and the glass mold blank shaping mold further comprises a mold plate (3), on which a boss (31) matching the groove (11) is arranged.

5. A method for manufacturing a glass mold blank modeling mold, characterized in that: include: S1. Forming the mold body through 3D printing; S2, heating the mold body or leaving the mold body still to harden the surface of the mold body; S3. The surface of the mold body after surface hardening is covered with a plastic film by using a hot film plastic sealing technology.

6. The method for manufacturing a glass mold blank molding mold according to claim 5, characterized in that: 3D printing uses resin sand as raw material.

7. The method for manufacturing a glass mold blank molding mold according to claim 4, characterized in that: The mold body is heated by baking in an oven.

8. The method for manufacturing a glass mold blank molding mold according to claim 1, characterized in that: The S1 step is performed at night, and the S2 and S3 steps are performed during the day.

9. The method for manufacturing a glass mold blank molding mold according to claim 1, characterized in that: When performing S1, a groove of uniform length, width and depth is printed at the bottom of the mold body, and a fixed boss is set on the template corresponding to the modeling mold, and the boss matches the shape of the groove.

10. The method for manufacturing a glass mold blank molding mold according to claim 1, characterized in that: 3D printing is also used to form the mold body and the covering plastic film when the mud core is used to chill and shape the membrane cavity of the glass mold blank.

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