Blow mold with adjustable forming shape

Abstract

This utility model relates to the field of blow molding die technology and discloses a blow molding die with adjustable molding shape, including a first molding die and a second molding die. A connecting post is fixedly provided on the lower side surface of the second molding die, and a connecting groove is formed on the lower side surface of the first molding die. Electric push rods are fixedly installed on the inner surfaces of the first and second molding dies, and limit blocks are fixedly provided on the outer surfaces of both ends of the first and second molding dies. This blow molding die with adjustable molding shape, by installing a sliding movable mold core on the inner surfaces of the first and second molding dies and driving the movable mold core to slide using an electric push rod, can flexibly adjust the shape of the cavity according to different production needs, effectively solving the problem of difficult molding shape adjustment in existing molds, and greatly improving the versatility of the mold and the diversified production capacity of the products.

Description

Technical Field

[0001] This utility model relates to the field of blow molding mold technology, specifically to a blow molding mold with adjustable molding shape. Background Technology

[0002] In modern industrial production, blow molding molds are widely used in the molding and processing of plastic products. As the market demand for plastic products becomes increasingly diversified and personalized, higher requirements are placed on the ability of blow molding molds to adjust the molding shape.

[0003] Currently, existing blow molding molds have many shortcomings in practical applications. On the one hand, the design of the molding shape adjustment mechanism of many blow molding molds is not reasonable enough, which makes it difficult to adjust the molding shape. For example, some molds adopt a fixed core structure, which makes it difficult to flexibly adjust the molding shape according to different production needs, which seriously restricts the diversified production of products. On the other hand, existing blow molding molds have defects in the docking structure. Traditional docking methods often have low docking accuracy, which can easily lead to deviations during the mold closing process, thereby affecting the shape and dimensional accuracy of the cavity and resulting in unstable quality of the produced plastic products.

[0004] In summary, existing blow molding molds have significant technical bottlenecks in terms of shape adjustment and mating structure. There is an urgent need for a blow molding mold with adjustable shape that can effectively solve the above problems in order to meet the demands of modern industrial production for high-quality and diversified plastic products. Utility Model Content

[0005] The purpose of this invention is to provide a blow mold with adjustable molding shape to solve the problems mentioned in the background art, such as the difficulty in adjusting the molding shape of existing blow molds and the insufficient docking accuracy leading to unstable product quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a blow molding mold with adjustable molding shape, including a first molding mold and a second molding mold, wherein a docking post is fixedly provided on the lower side surface of the second molding mold, a docking groove is provided on the lower side surface of the first molding mold, a sliding movable mold core is installed on the inner side surfaces of the first molding mold and the second molding mold, a cavity is provided on the inner side surfaces of the first molding mold, the second molding mold and the movable mold core, an electric push rod is fixedly installed on the inner side surfaces of the first molding mold and the second molding mold, and limit blocks are fixedly provided on the outer side surfaces of both ends of the first molding mold and the second molding mold;

[0007] The second molding die has a clearance groove on its upper outer surface, the first molding die has a functional block fixedly installed on its upper outer surface, the functional block has a limit block installed at its lower end, the first molding die has a pressure chamber on its upper outer surface, the limit block has a piston chamber inside, the first molding die has a connecting groove inside its upper end, and the second molding die has a pressure block fixedly installed on its upper outer surface.

[0008] Preferably, the docking post is positioned directly opposite the docking groove, and the docking post and the docking groove are engaged and installed together.

[0009] By adopting the above technical solution, the snap-fit ​​installation of the docking post and the docking groove realizes the precise docking of the first molding mold and the second molding mold, avoiding the deviation of the traditional docking method, ensuring the shape and size accuracy of the cavity, and improving the quality stability of plastic products.

[0010] Preferably, one end of the outer surface of the movable mold core is in contact with the outer surface of the limiting block, and the movable mold core is connected to the first molding mold and the second molding mold by sliding friction.

[0011] By adopting the above technical solution, the movable mold core is connected to the mold by sliding friction, which allows it to slide smoothly. It can also be precisely positioned by fitting with the limiting block, thus ensuring the stability and reliability of the molding process.

[0012] Preferably, the limiting block and the piston chamber are connected by sliding friction, and a spring is connected between the limiting block and the piston chamber.

[0013] By adopting the above technical solution, the sliding of the limiting block in the piston chamber is buffered and adjusted by the spring, which can realize flexible pressure adjustment.

[0014] Preferably, the lower end of the limiting block is an isosceles trapezoidal design, and the vertical surface of the lower end of the limiting block is in contact with the upper outer surface of the movable mold core.

[0015] By adopting the above technical solution, the isosceles trapezoidal design at the lower end of the limiting block allows its vertical surface to fit against the movable mold core and laterally limit it, ensuring the stability of the movable mold core's position, thereby ensuring the cavity accuracy and product molding quality.

[0016] Preferably, the pressurizing chamber and the pressurizing block are engaged and installed together, and the pressurizing chamber and the pressurizing block are connected by sliding friction. The connecting grooves penetrate the inner surfaces of the pressurizing chamber and the piston chamber respectively.

[0017] Using the above technical solution, the pressure chamber and the pressure block are engaged and connected by sliding friction. The connecting groove enables pressure transmission, achieving uniform pressure and further limiting the movement of the movable mold core.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the blow molding mold with adjustable molding shape:

[0019] 1. By installing a sliding movable mold core on the inner surface of the first molding mold and the second molding mold, and using an electric push rod to drive the movable mold core to slide, the shape of the cavity can be flexibly adjusted according to different production needs, which effectively solves the problem of difficult adjustment of the molding shape of existing molds, and greatly improves the versatility of molds and the diversified production capacity of products;

[0020] 2. The snap-fit ​​installation design of the docking column and the docking groove enables the first molding mold and the second molding mold to accurately dock during the mold closing process, effectively avoiding the deviation problem that is easy to occur in the traditional docking method, improving the shape and size accuracy of the cavity, and thus improving the quality stability of plastic products;

[0021] 3. The movable mold core is connected to the first molding mold and the second molding mold by sliding friction, and one end of its outer surface is in contact with the outer surface of the limiting block. This ensures that the movable mold core can slide smoothly, and the limiting block achieves precise positioning of the movable mold core, thus ensuring the stability and reliability of the molding process.

[0022] 4. The design of the locking installation of the pressure chamber and the pressure block, and the connecting groove passing through the pressure chamber and the piston chamber respectively, enables uniform pressure to be applied during the mold closing process, so that the pressure can drive the limiting block to further limit the movable mold core below. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0024] Figure 2 This is a three-dimensional structural diagram showing the connection between the first molding mold, the movable mold core, and the limiting block of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the connection between the second molding mold and the movable mold core of this utility model;

[0026] Figure 4 This is a three-dimensional structural diagram of the connection between the first molding die and the movable mold core of this utility model;

[0027] Figure 5 This is a three-dimensional structural diagram of the cross-sectional view connecting the pressurization chamber, piston chamber, and connecting groove of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the connection between the movable mold core and the electric push rod of this utility model.

[0029] In the diagram: 1. First forming mold; 2. Second forming mold; 3. Connecting post; 4. Connecting groove; 5. Movable mold core; 6. Cavity; 7. Electric push rod; 8. Limiting block; 9. Relief groove; 10. Functional block; 11. Limiting block; 12. Pressurizing chamber; 13. Piston chamber; 14. Connecting groove; 15. Pressurizing block. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the field of blow molding, the precision and stability of the mold structure directly determine the molding quality of plastic products. Among the existing feasible technologies, the molding positioning methods are mostly limited to simple fixed cores or static support structures, which cannot cope with the deformation problems of the mold during the molding process, especially near the completion of molding. Some equipment uses rigid support structures, which can provide a certain degree of stability, but lack the ability to adaptively adjust to the dynamic changes of the mold, which can easily lead to uneven molding surfaces or product breakage. Other technologies attempt to use multi-point contact positioning, but uneven distribution of support points or uncoordinated adjustment make it difficult to achieve an effective molding positioning effect.

[0032] Please see Figures 1-6 This utility model provides a technical solution: a blow molding mold with adjustable molding shape.

[0033] Example 1: This example discloses a first molding mold 1 and a second molding mold 2. A docking post 3 is fixedly provided on the lower side surface of the second molding mold 2. A docking groove 4 is provided on the lower side surface of the first molding mold 1. A sliding movable mold core 5 is installed on the inner side surfaces of the first molding mold 1 and the second molding mold 2. A cavity 6 is provided on the inner side surfaces of the first molding mold 1, the second molding mold 2 and the movable mold core 5. An electric push rod 7 is fixedly installed on the inner side surfaces of the first molding mold 1 and the second molding mold 2. Limiting blocks 8 are fixedly provided on the outer side surfaces of both ends of the first molding mold 1 and the second molding mold 2.

[0034] The docking post 3 is positioned directly opposite the docking groove 4, and the docking post 3 and the docking groove 4 are engaged and installed together.

[0035] One end of the outer surface of the movable mold core 5 is in contact with the outer surface of the limiting block 8, and the movable mold core 5 is in sliding friction connection with the first molding mold 1 and the second molding mold 2.

[0036] During the blow molding process, the first molding die 1 and the second molding die 2 are precisely connected by the snap-fit ​​installation of the docking post 3 and the docking groove 4. This design effectively avoids the deviation problem of the traditional docking method, and lays the foundation for ensuring the shape and size accuracy of the cavity 6 in the subsequent molding process, thereby improving the quality stability of plastic products and demonstrating the beneficial effect of high docking accuracy.

[0037] After docking, according to different production needs, the electric push rod 7 is activated. The electric push rod 7 drives the movable mold core 5 to slide on the inner surface of the first molding mold 1 and the second molding mold 2. Since the movable mold core 5 is connected to the first molding mold 1 and the second molding mold 2 by sliding friction, and one end of its outer surface is in contact with the outer surface of the limiting block 8, the movable mold core 5 can slide smoothly. At the same time, the limiting block 8 precisely limits its position to ensure that the movable mold core 5 is accurately positioned during the sliding process and will not deviate.

[0038] As the movable mold core 5 slides, the different positions of the cavities 6 are switched, thereby achieving the goal of flexibly adjusting the molding shape according to different production needs. This solves the problem of difficulty in adjusting the molding shape of existing molds and greatly improves the versatility of molds and the diversified production capacity of products.

[0039] Example 2: This example is based on Example 1: The upper outer surface of the second molding mold 2 is provided with a relief groove 9, the upper outer surface of the first molding mold 1 is fixedly provided with a functional block 10, the lower end of the functional block 10 is provided with a limiting block 11, the upper outer surface of the first molding mold 1 is provided with a pressure chamber 12, the inside of the limiting block 11 is provided with a piston chamber 13, the upper inside of the first molding mold 1 is provided with a connecting groove 14, and the upper outer surface of the second molding mold 2 is fixedly provided with a pressure block 15.

[0040] The limiting block 11 and the piston chamber 13 are connected by sliding friction, and a spring is connected between the limiting block 11 and the piston chamber 13;

[0041] The lower end of the limiting block 11 is an isosceles trapezoidal design, and the vertical surface of the lower end of the limiting block 11 is in contact with the upper outer surface of the movable mold core 5.

[0042] The pressurizing chamber 12 is engaged with the pressurizing block 15, and the pressurizing chamber 12 and the pressurizing block 15 are connected by sliding friction. The connecting groove 14 passes through the inner surfaces of the pressurizing chamber 12 and the piston chamber 13 respectively.

[0043] When the first molding mold 1 and the second molding mold 2 are closed, the pressure block 15 on the outer surface of the upper end of the second molding mold 2 is inserted into the pressure cavity 12 on the outer surface of the upper end of the first molding mold 1. Since the pressure cavity 12 and the pressure block 15 are engaged and connected by sliding friction, the pressure block 15 can be smoothly inserted into the pressure cavity 12.

[0044] As the pressure block 15 is inserted, the pressure in the pressure chamber 12 changes. The pressure is transmitted to the piston chamber 13 inside the limiting block 11 through the connecting groove 14. Under the action of the pressure, the limiting block 11 slides downward in the piston chamber 13. Because the limiting block 11 and the piston chamber 13 are connected by sliding friction and a spring is connected between them, the sliding process of the limiting block 11 is buffered and adjusted by the spring, so that the pressure can be flexibly adjusted as needed.

[0045] The lower end of the limiting block 11 is designed as an isosceles trapezoid, and its vertical surface is in contact with the upper outer surface of the movable mold core 5. When the limiting block 11 slides down, its vertical surface will laterally limit the movable mold core 5, thereby further limiting the movable mold core 5 and ensuring that the position of the movable mold core 5 is more stable during the molding process. It will not be displaced due to pressure or other factors, further ensuring the shape and dimensional accuracy of the cavity 6 and improving the molding quality of plastic products.

[0046] Meanwhile, the clearance groove 9 opened on the outer surface of the upper end of the second molding mold 2 cooperates with the functional block 10 fixedly set on the outer surface of the upper end of the first molding mold 1, making the mold structure more compact during the mold closing process, providing better stability, and further ensuring the molding quality.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blow molding die with adjustable molding shape, comprising a first molding die (1) and a second molding die (2), wherein a mating post (3) is fixedly provided on the lower end side surface of the second molding die (2), and a mating groove (4) is provided on the lower end side surface of the first molding die (1), characterized in that: The inner surfaces of the first molding mold (1) and the second molding mold (2) are equipped with sliding movable mold cores (5). The inner surfaces of the first molding mold (1), the second molding mold (2) and the movable mold core (5) are provided with cavities (6). The inner surfaces of the first molding mold (1) and the second molding mold (2) are fixedly equipped with electric push rods (7). The outer surfaces of both ends of the first molding mold (1) and the second molding mold (2) are fixedly provided with limit stops (8).

2. The blow molding die with adjustable molding shape according to claim 1, characterized in that: The second molding die (2) has a clearance groove (9) on its upper outer surface. The first molding die (1) has a functional block (10) fixedly installed on its upper outer surface. The functional block (10) has a limit block (11) at its lower end. The first molding die (1) has a pressure chamber (12) on its upper outer surface. The limit block (11) has a piston chamber (13) inside its interior. The first molding die (1) has a connecting groove (14) inside its upper interior. The second molding die (2) has a pressure block (15) fixedly installed on its upper outer surface.

3. The blow molding die with adjustable molding shape according to claim 1, characterized in that: The docking post (3) is positioned directly opposite the docking groove (4), and the docking post (3) and the docking groove (4) are engaged and installed.

4. The blow molding die with adjustable molding shape according to claim 1, characterized in that: One end of the outer surface of the movable mold core (5) is in contact with the outer surface of the limiting block (8), and the movable mold core (5) is in sliding friction connection with the first molding mold (1) and the second molding mold (2).

5. The blow molding die with adjustable molding shape according to claim 2, characterized in that: The limiting block (11) and the piston chamber (13) are connected by sliding friction, and a spring is connected between the limiting block (11) and the piston chamber (13).

6. The blow molding die with adjustable molding shape according to claim 2, characterized in that: The lower end of the limiting block (11) is an isosceles trapezoidal design, and the vertical surface of the lower end of the limiting block (11) is in contact with the upper outer surface of the movable mold core (5).

7. The blow molding die with adjustable molding shape according to claim 2, characterized in that: The pressurizing chamber (12) is engaged with the pressurizing block (15), and the pressurizing chamber (12) and the pressurizing block (15) are connected by sliding friction. The connecting groove (14) passes through the inner surfaces of the pressurizing chamber (12) and the piston chamber (13).

Images