Production method for improving defects of glass bottle body

Abstract

The invention provides a production method for improving bottle body defects of a glass bottle, which comprises the following steps: primary mold forming: injecting molten glass into a primary mold, blowing and forming to obtain a glass bottle blank, and molding and forming: feeding the glass bottle blank into a forming mold, blowing and forming to obtain a finished glass bottle, the mold is characterized in that the forming surface of the mold forming choke plug is sunken downwards, the periphery of the forming surface is an arc chamfer, the radius of the chamfer is 10mm, an anti-explosion line is arranged at the chamfer part, the length of the anti-explosion line is 6.5 mm, and the width of the anti-explosion line is 1.2 mm. By controlling the glass bottle forming process, the quality of a finished glass bottle is improved, the anti-knock performance of the bottom of the glass bottle and the wear-resistant degree and identification degree of patterns are improved, the bottle body strength of the glass bottle is greatly improved, the burst probability of the patterns and the bottom of the glass bottle is reduced, the probability of fragmentation of the glass bottle in the using and transporting process is reduced, and the service life of the glass bottle is prolonged. The glass bottle use safety is improved, and the glass bottle recycling cost is reduced.

Description

Technical Field

[0001] The invention belongs to a production method for glass bottles, and in particular relates to a production method for improving defects of glass bottle bodies. Background Art

[0002] Glass bottles have excellent properties such as good light transmittance, chemical stability and hardness, and are not easy to react with the contents inside. Therefore, they are widely used in many fields such as food and chemistry. Even when many kinds of packaging materials are flooding into the market, glass containers still occupy an important position in the packaging field. Due to the huge amount of glass bottles used, the subsequent treatment issues they bring also need to be paid attention to. Otherwise, a large number of waste glass bottles cannot be effectively treated, which will cause a huge burden on the environment and social resources.

[0003] There are generally two ways to deal with waste glass bottles. One is to clean the intact waste glass bottles and recycle them, which can greatly reduce the cost of glass recycling. The other is to crush the broken glass bottles and use them as recycled materials to manufacture new glass products. Therefore, for waste glass recycling, keeping the glass bottles intact and recycling them is the best solution. This method must ensure that the glass bottles can be kept intact during use. The glass bottles need to have high quality, which is closely related to the production and manufacturing process of the glass bottles. Due to the needs of sellers, the body of the glass bottles will have various protruding trademarks, text, numbers and other information. This protruding part is not only prone to bumps during use, but also prone to molding problems due to mold problems during the manufacturing process. At the same time, the explosion-proof pattern on the bottom of the glass bottle will also affect the durability of the glass bottle. Therefore, it is necessary to improve the production of glass bottles and control the production quality and later use strength of glass bottles through production methods. Summary of the invention

[0004] The present invention provides a production method for improving defects in a glass bottle body. The method controls the glass bottle molding process and utilizes an initial mold and a finished mold for molding the glass bottle to improve the quality of vulnerable parts of the glass bottle, ensure that a pattern part and a bottle bottom part can meet index requirements, and improve the yield rate of the finished product and the quality during use.

[0005] A production method for improving defects in glass bottle bodies, wherein glass raw materials are sintered into glass liquid by a melting furnace, and the glass liquid is sent into a matrix bottle making machine for blow molding to obtain a glass bottle. The blowing process in the matrix bottle making machine includes two steps: initial mold molding and final mold molding. First, the glass liquid is injected into the initial mold through initial mold molding and blow molded to obtain a glass bottle blank. Then, the glass bottle blank is sent into a final mold through final mold molding and blow molded to obtain a glass bottle. In the molding process, the molding blank is a mold component used for molding the bottom of the glass bottle. A molding surface is provided above the molding blank, and the molding surface is concave downward into the shape of a bottle. The molding surface is surrounded by arc chamfers, corresponding to the arc chamfers around the bottom of the glass bottle. In order to reduce the chamfer stress of the bottom of the bottle and prevent the bottom of the bottle from bursting, the chamfer radius of the molding surface is set to 10mm. In order to improve the sturdiness of the glass bottle during use, it is necessary to set an anti-explosion pattern on the bottom of the glass bottle. Therefore, corresponding anti-explosion patterns are also set on the chamfered part of the molding surface of the blank. The anti-explosion patterns on the blank are used to print the anti-explosion patterns on the bottom of the glass bottle when the glass bottle is blown. The length of the anti-explosion pattern is set to 6.5mm and the width is 1.2mm, which effectively improves the physical properties of the anti-explosion pattern on the bottom of the glass bottle.

[0006] During the molding process, in response to customer demand, a trademark pattern needs to be printed on the glass bottle. For this purpose, a trademark concave pattern is set on the inner cavity wall of the mold. During the process of blowing the glass bottle, a convex trademark pattern is printed through the trademark concave pattern. In order to ensure that the trademark pattern does not produce cracks during the molding process, the bottom surface of the trademark concave pattern is set to an arc surface with a radius of 3mm.

[0007] At the same time, during the molding process, it is sometimes necessary to print a digital pattern on the bottom of the glass bottle to mark the bottom of the bottle with a digital logo. For this purpose, a digital die is set on the upper end face of the molded head, and a convex digital pattern is printed through the digital die during the glass bottle blowing process. In order to ensure that the digital pattern can be accurately read by the detection instrument after molding, the width of the digital die is set to 1.4mm.

[0008] In order to improve the quality of the bottom of the glass bottle and reduce the probability of the bottom of the glass bottle exploding, the molding surface of the mold head is set to a diameter of 60.6mm, and the explosion-proof pattern is set to an inner circle diameter of 53.3mm, so that the distance between the explosion-proof pattern and the midpoint of the molding surface is 53.3mm.

[0009] The initial mold forming step is related to the quality of the next molding process. If the bottle blank is not blown in place during the initial mold forming process, the internal thickness is uneven, substandard, the bottle shape is not standard, etc., all of which will be magnified in the molding process, resulting in unqualified glass bottles. The bottom of the glass bottle is the thickest part of the glass bottle, and special attention should be paid to its uniformity during the blowing process. The initial mold blank is a molding mold component for the bottom of the bottle blank. A molding surface is provided above the initial mold blank, and the molding surface is recessed downward to the shape of the bottom of the bottle blank. The molding surface is surrounded by arc chamfers, corresponding to the arc chamfers of the bottom of the bottle blank. The arc chamfer radius of the initial mold blank is set to 10mm to increase the diffusion effect of the glass liquid and make the bottom of the bottle blank more uniform during molding.

[0010] The production method for improving defects in the body of a glass bottle provided by the present invention improves the quality of the finished glass bottle by controlling the glass bottle molding process, and improves the uniformity of liquid diffusion at the bottom of the preform in the initial mold molding stage to make the bottom of the preform more uniform, thereby avoiding uneven thickness of the preform; in the molding stage, the explosion-proof pattern and the chamfer of the bottom of the glass bottle are improved to improve the explosion-proof performance of the bottom of the glass bottle, and at the same time, the digital pattern and trademark pattern on the bottle are improved to improve the wear resistance and recognition of the pattern. The present invention can greatly improve the body strength of the glass bottle, reduce the probability of bursting of the pattern and the bottom of the bottle, reduce the probability of glass bottles being broken during use and transportation, allow the glass bottle to be completely preserved after use, improve the safety of glass bottles, and reduce the cost of recycling and using glass bottles. DETAILED DESCRIPTION

[0011] To further illustrate the concept of the present invention, the specific implementation methods of the present invention will be further described below: A production method for improving defects in a glass bottle body includes two main molding processes, namely, initial molding and final molding. Other processes adopt existing glass bottle production processes to complete the production of a complete glass bottle finished product.

[0012] The primary mold molding is to inject the glass liquid into the primary mold and then blow it to form a glass bottle blank. The molding surfaces of the primary mold head and the finished mold head are concave downward, and the molding surfaces are chamfered on all sides. In the existing process, the arc chamfer radius of the primary mold head used is 4.5mm, the arc chamfer radius of the finished mold head is 6mm, and the diameter of the molding surface is 59.8mm. A circle of explosion-proof patterns is provided on the molding surface of the finished mold head. The length of the explosion-proof pattern is 6mm and the width is 1.2mm. The explosion-proof pattern is set at 51.45mm from the center of the finished mold head. According to production requirements, a digital concave mold is also set on the molding surface of the finished mold head to make a protruding digital logo on the bottom of the bottle. The set digital concave mold maintains its width of 1.2mm. A concave trademark concave pattern is provided on the inner cavity wall of the finished mold. The shape of the trademark concave pattern is designed according to customer requirements, and the trademark concave pattern used uniformly has a radius of 1.5mm. In the subsequent inspection process, the glass bottles produced by this mold are prone to bottom cracking. At the same time, the digital logo on the bottom will have a low reading rate, and the trademark pattern is also prone to cracking defects.

[0013] The glass bottles produced by the prior art were tested, and the test data of the glass bottles for 5 days were counted, and the data of each day was recorded. The results are as follows:

[0014] Judging from the test results, the bottom explosion of glass bottles produced using existing technology occurs relatively frequently, with the basic probability remaining at around 4.2%. The digital label reading rate is also basically around 81%, and the trademark pattern damage rate is also around 6.3, which has a great impact on the inspection of the production line and the quality of the finished glass bottles.

[0015] In the embodiment of the present invention, the structures of the mold and the blank mold are re-set, the molding surface of the molded blank head is enlarged to a diameter of 60.6 mm, the arc chamfer radius is increased to 10 mm, the length of the explosion-proof pattern is increased to 6.5 mm, the width is increased to 1.4 mm, and the position of the explosion-proof pattern is moved outward to a distance of 53.3 mm from the center of the molded blank head, the digital concave mold on the molded blank head is widened to 1.4 mm, and the trademark concave pattern on the inner wall of the mold is thickened to a radius of 3 mm. The arc chamfer radius of the molding surface of the blank mold blank head is increased to 10 mm.

[0016] The glass bottles produced in the embodiment of the present invention were tested in the same manner, and the production data of the glass bottles for 5 days were also sampled, and the data of each day was recorded one by one. The results are as follows:

[0017] From the test results, the glass bottles produced by the method of the present invention effectively reduce the defective rate of glass bottles, the bottom burst rate is reduced to about 1.2, the digital logo reading rate is increased to about 94%, and the trademark pattern damage rate is reduced to about 0.9, which effectively improves the production quality of glass bottles.

[0018] Through the implementation of the present invention, the glass liquid is more evenly distributed in the inner cavity of the initial mold during the vertical process of the glass bottle, avoiding the uneven thickness of the glass bottle blank. Combined with the improvement of the mold head, the bottom quality of the glass bottle is effectively improved, the qualified rate of the glass bottle is guaranteed, and the durability of the later use is improved. The design of the trademark pattern area and the digital identification area greatly reduces the defective rate of the trademark pattern, which can not only improve customer satisfaction with the product, but also ensure that the wear of the trademark pattern of the glass bottle during use is effectively reduced, thereby reducing the recycling and reuse cost of the glass bottle.

[0019] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various changes and variations may occur. Any modifications, equivalent substitutions, improvements, etc. made using the present invention should be included in the scope of protection of the present invention.

Claims

1. A production method for improving defects of glass bottle bodies, comprising primary mold forming and final mold forming, wherein the primary mold forming is to inject glass liquid into the primary mold and then blow it to obtain a glass bottle blank, and the final mold forming is to put the glass bottle blank into the final mold and then blow it to obtain a glass bottle, characterized in that: The forming surface of the molded blank is concave downwards, and the four sides of the forming surface are chamfered with arcs, the radius of the chamfer is 10mm, and an explosion-proof pattern is provided on the chamfered part, and the length of the explosion-proof pattern is 6.5mm and the width is 1.2mm.

2. The production method for improving defects of glass bottles according to claim 1, characterized in that: The inner cavity wall of the mold is provided with a trademark concave pattern, and the bottom surface of the trademark concave pattern is an arc surface with a radius of 3mm.

3. The production method for improving defects of glass bottles according to claim 2, characterized in that: A digital die is provided on the upper end surface of the molded blind head, and the width of the digital die is 1.4 mm.

4. The production method for improving defects of glass bottles according to claim 3, characterized in that: The diameter of the molding surface of the molded bulkhead is 60.6 mm, and the inner circle diameter of the explosion-proof pattern is 53.3 mm.

5. The production method for improving defects of glass bottles according to claim 4, characterized in that: The forming surface of the initial mold blank is concave downward, and the four sides of the forming surface are circular chamfered, and the radius of the chamfer is 10mm.

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