Large capacity straight line bottle blowing mold bottle gripper port structure

Abstract

The utility model relates to blow mould technology field especially is concerned to a kind of large capacity straight line bottle mould bottle clamp mouth structure, it includes mould body and bottle clamp mouth module.Mould body top is equipped with bottle mouth injection molding area and annular clamping groove, bottle clamp mouth module is supported in annular clamping groove by cylindrical portion and realizes installation, plate portion is equipped with heating head guide through-hole, is located directly above bottle mouth injection molding area.Bottle clamp mouth module optimally stainless steel material, plate portion is equipped with snatch hole and is convenient to dismount, mould body top can be equipped with round boss portion and bottle clamp mouth module is pasted together.The utility model can effectively protect bottle mouth area, avoid scratch or damage, improve installation stability and durability, simplify dismounting operation simultaneously, improve production efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of blow molding technology, and more specifically, to a bottle clamping structure for a large-capacity linear blow molding die. Background Technology

[0002] In the field of blow molding technology, linear blow molding machines are widely used equipment. They work by feeding heated preforms into a mold, where they are stretched and inflated using a tension rod and high-pressure air. During this process, the bottle neck area plays a crucial role in the quality of the final product. However, traditional bottle neck structures or mold designs have many shortcomings in practical applications. For example, after prolonged or high-frequency use, the bottle neck area is easily scratched, dented, or damaged during blow molding due to repeated movement of the tension rod or heating head and positioning deviations, leading to a decrease in product yield. Furthermore, traditional bottle neck structures often lack precise guiding functions, making it difficult to effectively protect the bottle neck area, further exacerbating this problem.

[0003] In existing technologies, bottle clamp structures typically employ a split design or a multi-part assembly method. This design not only increases assembly complexity but can also lead to loosening or wear at the joints, affecting the overall stability and service life of the mold. Furthermore, the selection of traditional materials has limitations, such as insufficient high-temperature resistance and corrosion resistance, making it difficult to withstand the harsh working environment of blow molding, thus shortening the service life of mold components. In addition, existing bottle clamp structures are cumbersome to maintain and replace, requiring significant time and labor costs, thus reducing production efficiency.

[0004] To address the aforementioned problems, there is an urgent need for a novel bottle clamping structure that can effectively protect the bottle neck area, improve installation stability and convenience, enhance durability, and simplify maintenance, in order to meet the high efficiency and high quality requirements of modern blow molding production. This utility model is proposed based on this need, aiming to solve the defects of existing technologies and improve the overall performance and reliability of blow molding dies through innovative structural design and material selection. Utility Model Content

[0005] This invention addresses the problems of easy scratching or damage to the bottle neck area during blow molding, inconvenient disassembly and assembly, and insufficient durability in existing technologies. To address these issues, this invention provides a bottle clamping structure for a large-capacity linear blow molding mold. The structure includes a mold body and a bottle clamping module. The top of the mold body has a bottle neck injection area and an annular groove centered on this injection area. The bottle clamping module is installed by being supported in the annular groove by its cylindrical portion and is equipped with a heating head guide hole to protect the bottle neck area.

[0006] This utility model provides a bottle clamping structure for a large-capacity linear blow molding die, including a die body and a bottle clamping module. The top of the die body has a bottle neck injection area and an annular groove arranged around the injection area. The depth and width of the annular groove are designed to accommodate the installation of the bottle clamping module. The bottle clamping module includes an integrally formed plate-shaped part and a cylindrical part, wherein the plate-shaped part is located at the top, and the cylindrical part extends downward from the lower surface of the plate-shaped part. The bottle clamping module is installed and fixed by inserting its cylindrical part into the annular groove, and a tight fit is formed between the cylindrical part and the annular groove to ensure a stable installation. Furthermore, the plate-shaped part is provided with a heating head guide hole, located directly above the injection area, for guiding the heating head and the stretching rod into the preform for processing.

[0007] Furthermore, the bottle clamp module is made of stainless steel, which possesses high strength, high wear resistance, and good corrosion resistance. The choice of stainless steel allows the bottle clamp module to withstand the high-temperature environment, high pressure, and potential chemical corrosion during the blow molding process, significantly extending the component's service life. In addition, at least one gripping hole is provided on the plate-shaped portion, facilitating the disassembly, installation, and transfer of the bottle clamp module by operators using their fingers or specialized tools, thereby improving maintenance efficiency.

[0008] Specifically, the top of the mold body protrudes upward at the center of the annular groove to form a circular boss, and the inner annular groove wall forms the lower cylindrical section of the circular boss. The lower surface of the plate-shaped part of the bottle clamp module matches and fits against the upper surface of the circular boss, forming a stable support relationship. The bottle neck injection area is located at the center of the circular boss, ensuring uniform force distribution and concentrated support in the bottle neck injection area. This design not only enhances the installation stability of the bottle clamp module but also improves its positioning accuracy.

[0009] Furthermore, the axis of the heating head guide hole coincides with the central axis of the bottle neck injection area. The diameter of the hole is precisely calculated to meet the passage requirements of the heating head and the tension rod, while avoiding contact with the bottle neck area. When the heating head and the tension rod enter the preform through the heating head guide hole, the precise guiding effect of the hole reduces the risk of scratches or impacts caused by positioning deviations, thereby effectively protecting the integrity of the bottle neck area.

[0010] Furthermore, the annular groove has a rectangular cross-sectional shape, and its depth and width are optimized according to the dimensions of the bottle clamp module. The depth of the annular groove is sufficient to accommodate the cylindrical part of the bottle clamp module, ensuring that the cylindrical part will not wobble or shift during operation; the width of the annular groove is adapted to the outer diameter of the cylindrical part, ensuring both installation stability and ease of assembly and disassembly. In addition, the bottom and sidewalls of the annular groove are precision machined to reduce friction and improve the fitting accuracy with the bottle clamp module.

[0011] Furthermore, the number and position of the gripping holes are set according to actual operational needs. For example, two gripping holes are symmetrically arranged on both sides of the plate-shaped part to facilitate disassembly or installation by the operator using both hands. The diameter of the gripping holes is designed to accommodate the gripping needs of fingers or tools, while avoiding being too large or too small, which would affect the ease of operation.

[0012] The beneficial effects of this invention are as follows: By setting a heating head guide hole on the plate-shaped part of the bottle clamp module and precisely arranging the hole above the bottle neck injection area, accurate guidance of the heating head and tension rod is achieved, eliminating the risk of scratches or damage to the bottle neck area caused by positioning deviations. The bottle clamp module is supported in the annular groove by its cylindrical part, and the design of the circular boss further enhances the stability and positioning accuracy of the installation. The bottle clamp module is made of stainless steel, which solves the problem of easy damage to traditional materials under high temperature, high pressure and chemical corrosion environments, significantly extending the service life of the components. The gripping holes on the plate-shaped part simplify disassembly, installation and maintenance operations, reduce downtime and lower maintenance costs. In addition, the one-piece molded bottle clamp module is more robust than the split structure, reduces potential problems at the connection, and the design of the circular boss makes the force on the bottle neck injection area more uniform, which helps to improve product quality and production efficiency.

[0013] In summary, this utility model solves the problems of easy damage to the bottle opening area, inconvenient disassembly and assembly, and insufficient durability in the prior art by rationally designing the structure of the bottle clamp module. At the same time, it optimizes the overall structural layout, improves production efficiency and product qualification rate, and has significant technical advantages and practical value.

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, embodiments of this utility model are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a side sectional three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 This is a side sectional view of the present invention.

[0018] Figure 3This is a first-view structural diagram of the bottle clamp module of this utility model;

[0019] Figure 4 This is a second-view structural diagram of the bottle clamp module of this utility model.

[0020] The attached figures are labeled as follows:

[0021] 1-Mold body, 2-Bottle mouth injection area, 3-Annular groove, 4-Bottle clamping module, 41-Plate part, 42-Cylindrical part, 43-Heating head guide hole, 44-Grip hole, 5-Circular boss part. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0023] This utility model provides a bottle clamping structure for a large-capacity linear blow molding die, combined with... Figures 1 to 4 As shown in the accompanying drawings, the specific implementation method is described in detail. The structure includes a mold body 1 and a bottle clamping module 4. The top of the mold body 1 is provided with a bottle neck injection area 2 and an annular groove 3 arranged around the bottle neck injection area 2. The bottle clamping module 4 is installed and fixed by inserting its cylindrical portion 42 into the annular groove 3, and is provided with a heating head guide hole 43 to protect the bottle neck area. The specific structure, function, and operation process of each component are described in detail below with reference to the accompanying drawings.

[0024] The mold body 1 is the core component of the entire blow molding mold, and its top is designed to support the preform and complete the forming of the bottle neck. A bottle neck injection zone 2 is located at the center of the top of the mold body 1. This injection zone 2 provides precise spatial support for the positioning and forming of the preform's bottle neck. The shape and size of the bottle neck injection zone 2 are determined according to the design requirements of the target bottle type, ensuring a tight fit with the preform's bottle neck, thereby achieving precise injection or positioning. Around the bottle neck injection zone 2, an annular groove 3 is formed on the top of the mold body 1. The depth and width of the annular groove 3 are carefully designed; for example, the depth is typically 5mm to 10mm, and the width is determined according to the outer diameter of the cylindrical portion 42 of the bottle neck module 4, generally 10mm to 20mm. The cross-sectional shape of the annular groove 3 is preferably rectangular, but it can also be designed into other shapes, such as trapezoidal or U-shaped, according to actual needs. The bottom and sidewalls of the annular groove 3 are precision machined, with the surface roughness controlled below Ra0.8 to reduce friction and improve the fitting accuracy with the bottle clamp module 4.

[0025] The bottle clamp module 4 is a key component of this invention. It features an integrated molding design, comprising a plate-shaped portion 41 and a cylindrical portion 42. The plate-shaped portion 41 is located at the top of the bottle clamp module 4, and its thickness is typically 8mm to 15mm to ensure sufficient strength and rigidity. The cylindrical portion 42 extends downwards from the lower surface of the plate-shaped portion 41, its height matching the depth of the annular groove 3, typically 5mm to 10mm, and its outer diameter matching the width of the annular groove 3. The outer wall of the cylindrical portion 42 is precision machined to form an interference fit or clearance fit with the inner wall of the annular groove 3. The clearance is controlled between 0.02mm and 0.05mm to ensure stable installation and easy disassembly. A heating head guide hole 43 is formed in the central area of ​​the plate-shaped portion 41, and the axis of this hole 43 coincides with the central axis of the bottle neck injection molding area 2. The diameter of the heating head guide hole 43 is designed according to the size of the heating head and the tension rod, usually 10mm to 15mm, which ensures that the heating head and the tension rod can pass through smoothly, while avoiding the risk of scratching the bottle mouth area due to the excessively large hole.

[0026] To further enhance the installation stability of the bottle clamp module 4, a circular boss 5 is provided at the top center of the mold body 1. The circular boss 5 protrudes upward from the center area of ​​the annular groove 3, with a height typically ranging from 3mm to 8mm and a diameter slightly smaller than the inner diameter of the annular groove 3, so as to form the lower section of the cylindrical side with the inner annular groove wall of the annular groove 3. The lower surface of the plate-like part 41 of the bottle clamp module 4 is designed to match and fit tightly with the upper surface of the circular boss 5, forming a stable support relationship. The bottle neck injection area 2 is located at the top center of the circular boss 5, so that the bottle neck injection area 2 is subjected to uniform force and receives concentrated support. This design not only enhances the installation stability of the bottle clamp module 4, but also improves its positioning accuracy, ensuring that the heating head guide hole 43 is always directly above the bottle neck injection area 2.

[0027] The bottle clamp module 4 is preferably made of stainless steel, such as 304 or 316 stainless steel. Stainless steel possesses high strength, high wear resistance, and good corrosion resistance, enabling it to withstand the high temperatures, high pressures, and potential chemical corrosion during blow molding. The choice of stainless steel significantly extends the service life of the bottle clamp module 4, reducing the frequency of replacement due to wear or corrosion. Furthermore, at least one gripping hole 44 is provided on the plate-shaped portion 41. The diameter of the gripping hole 44 is typically 10mm to 20mm to accommodate the gripping needs of fingers or specialized tools. The number and location of the gripping holes 44 are determined according to actual operational needs; for example, two gripping holes 44 may be symmetrically arranged on both sides of the plate-shaped portion 41 to facilitate disassembly or installation by the operator using both hands. The design of the gripping holes 44 simplifies the maintenance of the bottle clamp module 4 and improves work efficiency.

[0028] In actual operation, after the preform is fed into the mold, its neck is aligned with the neck injection area 2. The heating head and stretching rod enter the preform through the heating head guide hole 43 on the bottle clamp module 4 for heating, stretching, and blow molding. First, the preform is placed on the neck injection area 2 of the mold body 1, ensuring that the neck of the preform is tightly attached to the injection area 2 and aligned with the center position. Then, the blow molding machine is started, and the heating head enters the preform through the heating head guide hole 43 to heat it. The precise guiding effect of the heating head guide hole 43 ensures that the heating head moves along a predetermined trajectory, avoiding contact with the neck area. After heating, the stretching rod enters the preform through the heating head guide hole 43 to stretch it. The movement of the stretching rod is also constrained by the heating head guide hole 43, ensuring that it does not deviate from the central axis. Finally, high-pressure air is injected into the preform through the stretching rod to complete the blow molding of the preform. Throughout the process, the bottle clamp module 4 provides comprehensive protection for the area around the bottle opening, avoiding the risk of scratches or impacts caused by positioning deviations.

[0029] When maintenance or replacement of the bottle clamp module 4 is required, the operator can easily remove or install it from the mold body 1 using the gripping hole 44. First, use a finger or special tool to insert into the gripping hole 44 and apply force to remove the bottle clamp module 4 from the annular groove 3. After removal, clean, inspect, or replace the bottle clamp module 4. After maintenance, reinsert the cylindrical part 42 of the bottle clamp module 4 into the annular groove 3, ensuring that its lower end face is in close contact with the bottom of the annular groove 3 and that the lower surface of the plate-shaped part 41 is in contact with the upper surface of the circular boss part 5. Finally, check the installation status of the bottle clamp module 4 to ensure that it is secure and not loose. Because the disassembly and installation of the bottle clamp module 4 is simple, downtime is significantly reduced, and maintenance costs are lowered.

[0030] In summary, this invention achieves precise guidance of the heating head and tension rod by setting a heating head guide hole 43 on the plate-shaped part 41 of the bottle clamp module 4 and accurately arranging the hole directly above the bottle mouth injection area 2, thus eliminating the risk of scratches or damage to the bottle mouth area caused by positioning deviations. The bottle clamp module 4 is supported in the annular groove 3 by its cylindrical part 42, and the design of the circular boss part 5 further enhances the stability and positioning accuracy of the installation. The bottle clamp module 4 is made of stainless steel, which solves the problem of easy damage to traditional materials under high temperature, high pressure and chemical corrosion environments, and significantly extends the service life of the components. The gripping hole 44 set on the plate-shaped part 41 simplifies disassembly, installation and maintenance operations, reduces downtime and lowers maintenance costs. In addition, the one-piece molded bottle clamp module 4 is more robust than the split structure, reduces potential problems at the connection, and the design of the circular boss part 5 makes the force on the bottle mouth injection area 2 more uniform, which helps to improve product quality and production efficiency.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bottle clamping structure for a large-capacity linear blow molding die, comprising a die body (1) and a bottle clamping module (4), characterized in that, The top of the mold body (1) is provided with a bottle mouth injection area (2) and an annular groove (3) arranged around the bottle mouth injection area (2). The bottle clamp module (4) includes an integrally formed plate-shaped part (41) and a cylindrical part (42). The cylindrical part (42) is inserted into the annular groove (3) for installation. The plate-shaped part (41) is provided with a heating head guide hole (43). The heating head guide hole (43) is located directly above the bottle mouth injection area (2).

2. The bottle clamping structure of the large-capacity linear blow molding die according to claim 1, characterized in that, The top of the mold body (1) protrudes upward at the center of the annular groove (3) to form a circular boss (5), and the upper surface of the circular boss (5) is in contact with the lower surface of the plate-shaped part (41) of the bottle clamp module (4).

3. The bottle clamping structure of the large-capacity linear blow molding die according to claim 1, characterized in that, The annular slot (3) has a rectangular cross-sectional shape, and its depth is 5mm to 10mm and its width is 10mm to 20mm.

4. The bottle clamping structure of the large-capacity linear blow molding die according to claim 1, characterized in that, At least one gripping hole (44) is provided on the plate-shaped part (41) of the bottle clamp module (4), and the diameter of the gripping hole (44) is 10 mm to 20 mm.

Images