Method for adjusting capacity matching of finished mold and initial mold during NNPB production

Abstract

The invention relates to the technical field of bottle glass production, and discloses a method for adjusting the capacity matching of a finished mold and an initial mold during NNPB production, and the design comprises the following steps: S1, when the material weight meets the initial mold, the material weight does not meet the finished mold, the mold forming capacity is adjusted, the mold forming capacity can be reduced by increasing the height of a bulge, and when the finished mold and a bottom mold are matched together, the mold forming capacity can be reduced by increasing the height of the bulge; the mold forming capacity is reduced, and the matching of the mold forming capacity and the initial mold capacity is achieved in production; s2, after a certain time of production, the capacity of the formed mold and the capacity of the initial mold are not matched again, the matching capacity of the initial mold and the choke plug is adjusted, the variable capacity of the initial mold and the variable capacity of the formed mold are consistent by increasing the capacity of the initial mold, and then the material weight is increased; and S3, when the capacity of a single primary mold or the capacity of a forming mold is too large, using of the too large mold is stopped, after the capacity of the mold matched with the too large mold is increased, the two molds are put into production and use, and the service life of the molds in the NNPB production process is prolonged through the method of adjusting the capacity of the forming mold and the capacity of the primary mold.

Description

Technical Field

[0001] The invention relates to the technical field of bottle glass production, and in particular to a method for adjusting the matching of the capacity of a finished mold and a blank mold during NNPB production. Background Art

[0002] NNPB (Narrow Mouth Pressure Blowing) is a process for manufacturing lightweight glass bottles. In this process, the production of glass bottles requires two molds, the primary mold and the finishing mold. The primary mold is used to make the initial blank. The blank head and the primary mold cooperate to form a complete initial mold cavity. The glass liquid is pressed in the primary mold and the mouth mold by the punch to form the bottle mouth and the initial blank. The bottle mouth and the initial blank are then blown in the finishing mold to produce a glass bottle.

[0003] However, although the initial mold capacity and the final mold capacity match at the beginning of mold design, with the continuous use of the two molds, the capacity of the initial mold and the final mold will change and the changes between the two are inconsistent. Because it is a small-mouth pressure-blow method, the production has particularly high requirements for the capacity of the initial mold. If the capacity of the initial mold is large, it is easy to produce a riser. If the capacity of the initial mold is small, it is easy to produce a shed (insufficient mouth). These two defects are fatal defects and are not allowed. In the small-mouth blow method, the capacity of the mold changes more easily, which makes the service life of the mold in the existing small-mouth blow method shorter and the consumption of the mold is large. Summary of the invention

[0004] The object of the present invention is to provide a method for adjusting the capacity matching of the finished mold and the initial mold during NNPB production, so as to solve the problem of short mold service life in the existing small-mouth blowing method.

[0005] The present invention is achieved through the following technical solutions:

[0006] A method for adjusting the capacity matching of a finished mold and a blank mold during NNPB production, comprising the following steps;

[0007] S1. When the material weight meets the capacity of the initial mold but does not meet the capacity of the finished mold, the capacity of the finished mold is adjusted. The capacity of the finished mold can be reduced by increasing the height of the protrusion. When the finished mold and the bottom mold are matched together, the capacity of the finished mold is reduced, and the production reaches the matching of the capacity of the finished mold and the initial mold;

[0008] S2. After a certain period of production, the capacity of the finished mold and the blank mold will not match again. Adjust the matching capacity of the blank mold and the blind head. By increasing the capacity of the blank mold, the change capacity of the blank mold and the finished mold is consistent, and then increase the material weight;

[0009] S3. When the capacity of a single initial mold or a finished mold is too large, the use of the larger mold is suspended. When the capacity of a matching mold increases, the two molds are put into production.

[0010] During the production process, the capacities of the initial mold and the finished mold can be kept matched, so that the produced glass bottles meet the quality standards. At the same time, it effectively solves the problem of short mold service life caused by NNPB's production of glass bottles, so that the service life of the mold is guaranteed.

[0011] In one possible design, the method of increasing the volume of the initial mold is preferably to increase the capacity of the blind head, and the capacity of the blind head can be increased by grinding the blind head mold surface.

[0012] In one possible design, when the capacity of a single mold is too small, polishing equipment is used to increase the capacity of the small mold to the average of the overall capacity and put it into use to meet the capacity matching.

[0013] In one possible design, preventive maintenance is carried out when the mold reaches the middle of its life. The main method is to use a surface grinder to grind the thermal deformation of the mold, thereby correcting the deformation of the mold. After the correction, the initial mold capacity and the final mold capacity are in the same proportion to meet the requirements of use, so that the initial mold and the finished mold capacity are matched.

[0014] In one possible design, the mold capacity is adjusted in size according to demand, wherein the capacity range of the mold and the bottom mold can be reduced to 0.8-1.5 ml.

[0015] In one possible design, the capacity of the produced glass bottles is tested after each step to ensure that the capacity error of the finished glass bottles meets the design requirement of ±1ml. When the capacity error of the glass bottles is detected to be between ±0.6ml and ±0.8ml, the mold capacity is adjusted.

[0016] In a possible design, the base mold is designed with multiple models, and the base molds of different models only differ in the height of the protrusions. The height of the protrusions can be increased by replacing the base mold with a higher height of the protrusions.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] 1. The present invention adjusts the initial mold and the mold capacity so that the matching degree of the initial mold and the mold capacity is always consistent, which solves the fatal defects such as insufficient riser and mouth caused by the mismatch between the initial mold capacity and the mold capacity in the glass bottle production process, and makes the capacity and physical properties of the produced glass bottles meet the technical standards.

[0019] 2. The present invention improves the service life of the mold in the NNPB production process by adjusting the capacity matching method of the finished mold and the initial mold, which can greatly save the consumption cost of the mold in the production process.

[0020] 3. The parameters adjusted by the adjustment method of the present invention include the depth of the blind head and the raised height of the bottom mold. The raised height of the bottom mold does not affect the bottle body size requirements of the glass bottle, and can ensure that the bottle body height meets the design requirements. At the same time, the adjustment difficulty is low, and it can also effectively ensure that the bottle body size of the glass bottle meets the design requirements after the mold is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0022] Figure 1 It is a schematic diagram of the cooperation between the primary mold and the bulkhead in the present invention;

[0023] Figure 2 It is a schematic diagram of the structural features of the bulkhead in the present invention;

[0024] Figure 3 It is a schematic diagram of the cooperation between the forming mold and the bottom mold in the present invention;

[0025] Figure 4 It is a schematic diagram of the structural features of the bottom mold in the present invention.

[0026] The reference numerals represent: 1-initial mold, 2-blind head, 201-blind head mold surface, 3-finishing mold, 4-bottom mold, 401-protrusion. DETAILED DESCRIPTION

[0027] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0028] Examples, such as Figures 1 to 4 As shown, the molds used in the NNPB production in this embodiment include a primary mold for producing a rough embryo and a finishing mold for producing a finished product, the primary mold includes a primary mold 1 and a blind head 2, the finishing mold includes a finishing mold 3 and a bottom mold 4, the internal volume of the primary mold 1 after the blank head 2 cooperates with each other is the primary mold capacity, and the internal volume of the finishing mold 3 after the bottom mold 4 cooperates with each other is the finishing mold capacity.

[0029] It should be noted that the initial capacity of the initial mold and the finished mold is normal, otherwise it does not meet the design standards of the mold, but the finished mold capacity of the new mold is larger than the initial mold capacity, and the inner surface area of ​​the finished mold is larger than the inner surface area of ​​the initial mold. During the molding and mold maintenance process, the change in the finished mold capacity is larger than the change in the initial mold capacity. The friction force of the finished mold during the bottle blowing process is greater and the effective area is wider. Therefore, the change in the finished mold capacity is always greater than the initial mold capacity. After a certain number of glass bottles are produced, the initial mold capacity and the finished mold capacity do not match. Either a single mold is replaced or the entire set is replaced, which makes the cost of the mold too high.

[0030] Moreover, if the capacity of the mold is too large, it is necessary to increase the material weight to adjust it so that the capacity of the glass bottle meets the standard. If the material weight is not added, the capacity of the glass bottle will be too large and it will be a defective product. Since the capacity increases of the initial mold and the final mold are inconsistent, after the capacity of the two molds increases, the increase of the final mold is even greater. If the initial mold can meet the molding of the initial embryo, it will not meet the molding of the final mold. Otherwise, the capacity of the produced glass bottles will be too large. Conversely, if the capacity of the glass bottles produced by the final mold is met, it will not meet the material weight requirements of the initial mold, which will make the material weight at the initial mold 1 too large, and easily cause the fatal defect of the riser. If no measures are taken to adjust the capacity of the initial mold 1 and the final mold to match, the same glass bottle, then the mold that produces 20 million glass bottles by the blow-blowing method can only produce about 7 million by the NNPB small-mouth pressure-blowing method and will be scrapped.

[0031] To this end, this embodiment provides a method for adjusting the capacity matching of the finished mold and the blank mold, comprising the following steps:

[0032] S1. When the material weight meets the initial mold capacity but does not meet the final mold capacity, since the internal volume of the initial mold and the final mold will only increase when in use, it can be determined that this situation is caused by the increase in the final mold capacity, and the final mold capacity is adjusted. The final mold is composed of a final mold 3 and a bottom mold 4. The bottom mold 4 is provided with a protrusion 401. The final mold capacity can be reduced by raising the height of the protrusion 401. When the final mold 3 and the bottom mold 4 are matched together, the final mold capacity is reduced, and the production achieves a match between the final mold capacity and the initial mold capacity.

[0033] In this embodiment, the bottom mold is designed with multiple models, and the bottom molds of different models only differ in the height of the protrusions. The height of the protrusion 401 can be adjusted by replacing the bottom mold with a higher protrusion height. Only adjusting the protrusion on the bottom mold can not only make the capacity of the produced glass bottle meet the design requirements, but also does not affect the design size requirements of the glass bottle body.

[0034] In this embodiment, the size of the mold capacity is adjusted according to the demand, wherein the capacity range of the mold 3 and the bottom mold 4 can be reduced to 0.8-1.5 ml.

[0035] S2. As production continues, after a certain period of production, the capacities of the finished mold 3 and the initial mold 1 will not match again. The end of the finished mold 3 has been corrected for capacity using the bottom mold 4, and the bottom mold 4 cannot be used for correction for the second time. The protrusion 401 of the bottom mold 4 is too high and does not meet the standard requirements of the glass bottle. At this time, the matching capacity of the initial mold 1 and the bulkhead 2 can be adjusted. Since the change in the capacity of the finished mold is greater than that of the initial mold 1, the change in capacity of the initial mold and the finished mold can be made consistent by increasing the capacity of the initial mold. By increasing the weight of the material, the volume of the produced glass bottles can be kept unchanged and meet the production standards. The initial mold is composed of the initial mold 1 and the bulkhead 2. In order to meet the physical properties of the glass bottle, it is necessary to ensure that the shape of the initial mold 1 does not change. The method of increasing the volume of the initial mold is preferably to increase the capacity of the bulkhead 2. The capacity of the bulkhead 2 can be increased by grinding the bulkhead mold surface 201, thereby achieving the purpose of correction, and the capacity and physical properties of the produced glass bottles can also meet the production needs.

[0036] S3. When the capacity of a single initial mold or a finished mold is too large, the use of the larger mold is suspended. When the capacity of a matching mold increases, the two molds are put into production.

[0037] S4. When the capacity of a single mold is too small, use polishing equipment to increase the capacity of the small mold to the average of the overall capacity and put it into use to meet the capacity matching.

[0038] S5. When the mold reaches the middle of its life, preventive maintenance is carried out, mainly using a surface grinder to grind the thermal deformation of the mold, thereby correcting the deformation of the mold. After correction, the initial mold capacity and the final mold capacity are in the same proportion to meet the requirements of use, so that the initial mold capacity and the finished mold capacity are matched.

[0039] S6. After each step, the capacity of the produced glass bottles is tested to ensure that the capacity error of the finished glass bottles meets the design requirement of ±1ml. When the capacity error of the glass bottles is detected to be between ±0.6ml and ±0.8ml, the mold capacity is adjusted accordingly to ensure that the mold is adjusted before the capacity error of the glass bottles meets the design standard to ensure the size requirements of the glass bottles.

[0040] It should be noted that, in this embodiment, the inner wall parts of the initial mold 1 and the finished mold 3 are the main change areas, and in this embodiment, the positions of adjusting the mold are at the bulkhead 2 and the bottom mold 4, but the change of the mold capacity by 1 ml causes a negligible change in the diameter of the inner wall of the finished mold 3. Even if the inner surface of the finished mold 3 is increased, it will hardly affect the diameter of the bottle body. At the same time, the difficulty of adjustment can be greatly reduced by adjusting only the bulkhead 2 and the bottom mold 4. If the finished mold 3 is partially adjusted, not only will the adjustment be difficult, but it will also easily cause the roundness of the glass bottle body to change, which is often not worth the loss.

[0041] Through the correction using the above method, the capacities of the initial mold and the finished mold can be kept matched during production and use, so that the produced glass bottles meet the quality standards. At the same time, it effectively solves the problem of short mold service life caused by NNPB's production of glass bottles, so that the service life of the mold is guaranteed.

[0042] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for adjusting the capacity matching between a finished mold and a blank mold during NNPB production, comprising the following steps; S1. When the material weight meets the initial mold capacity but does not meet the mold capacity, the mold capacity is adjusted. The mold capacity can be reduced by raising the height of the protrusion (401). When the mold (3) and the bottom mold (4) are matched together, the mold capacity is reduced, and the production achieves the matching of the mold capacity and the initial mold capacity. S2. After a certain period of production, the mold capacity and the blank mold capacity will not match again. The matching capacity of the blank mold (1) and the blind head (2) is adjusted. The capacity of the blank mold is increased to make the change capacity of the blank mold and the mold capacity consistent, and then the material weight is increased; S3. When the capacity of a single initial mold or a finished mold is too large, the use of the larger mold is suspended. When the capacity of a matching mold increases, the two molds are put into production.

2. The method for adjusting the capacity matching between the finished mold and the blank mold during NNPB production according to claim 1, characterized in that: The method of increasing the volume of the initial mold is to increase the capacity of the bulkhead (2), and the capacity of the bulkhead (2) can be increased by grinding the bulkhead mold surface (201).

3. The method for adjusting the capacity matching between the finished mold and the blank mold during NNPB production according to claim 2, characterized in that: When the capacity of a single mold is too small, use polishing equipment to increase the capacity of the small mold to the average of the overall capacity and put it into use to meet the capacity matching.

4. The method for adjusting the capacity matching between the finished mold and the blank mold during NNPB production according to claim 1, characterized in that: When the mold reaches the middle of its life, preventive maintenance is carried out, mainly using a surface grinder to grind the thermal deformation of the mold, thereby correcting the deformation of the mold. After correction, the initial mold capacity and the finished mold capacity are in the same proportion, meeting the requirements of use, so that the initial mold capacity and the finished mold capacity are matched.

5. The method for adjusting the capacity of the finished mold and the blank mold during NNPB production according to claim 1, characterized in that: The size of the mold capacity is adjusted according to the demand, wherein the capacity range of the mold (3) and the bottom mold (4) can be reduced to 0.8-1.5ml.

6. A method for adjusting the capacity matching between the finished mold and the blank mold during NNPB production according to any one of claims 1 to 4, characterized in that: After each step, the capacity of the produced glass bottles is tested to ensure that the capacity error of the finished glass bottles meets the design requirement of ±1ml. When the capacity error of the glass bottles is detected to be between ±0.6ml and ±0.8ml, the mold capacity is adjusted.

7. The method for adjusting the capacity of the finished mold and the blank mold during NNPB production according to claim 1, characterized in that: The bottom mold (4) is designed with multiple models, and the bottom molds (4) of different models differ only in the height of the protrusion (401). By replacing the bottom mold with a higher height of the protrusion (401), the height of the protrusion (401) can be adjusted.

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