A pressure equalization device for multi-shot compression molding

Abstract

The utility model discloses a pressure balance device for multiple press forming, include: frame main part is provided with a plurality of cavities, and a plurality of cavities are linked through pressure balance pipeline, piston, a plurality of are provided with corresponding cavities, and are respectively movably arranged in a plurality of cavities, and the piston top is used for receiving the material to be pressed, the piston is sealed in the cavity, and the cavity is filled with pressure balance liquid, and the pressure is transferred through pressure balance liquid between a plurality of pistons to keep pressure balance, the utility model discloses a plurality of cavities are set up in the frame main part, and each cavity is linked through pressure balance pipeline, and the pressure is transferred using pressure balance liquid to keep pressure balance between each cavity, thereby realizing the pressure balance in the multiple press forming process, ensuring that the pressure that the material to be pressed receives is uniform and consistent when pressing the material on the piston, not only can improve production efficiency, but also can improve product quality stability and consistency.

Description

Technical Field

[0001] This utility model relates to the field of compression molding technology, and in particular to a pressure balancing device for multi-stage compression molding. Background Technology

[0002] In existing press models, such as those using CN108484340A and CN222298643U, a single pressure plate is typically used to compress the propellant cartridge, one cartridge at a time. This results in low production efficiency and difficulty in ensuring the uniformity and stability of the propellant cartridges. Furthermore, even with multiple die stations compressing multiple cartridges, uneven pressure on each cartridge can easily occur, leading to inconsistent quality. For example, if one cartridge contains too much or too little propellant compared to others, or if a cartridge's height is inconsistent for other reasons, the pressure it experiences during compression will differ from the others, affecting the stability and consistency of product quality.

[0003] Therefore, how to design a device that can achieve pressure balance during multi-stage pressing is a problem that needs to be solved by those skilled in the art. Utility Model Content

[0004] This utility model provides a pressure balancing device for multi-shot compression molding, which aims to overcome the problems existing in the prior art.

[0005] This utility model provides a pressure balancing device for multi-shot compression molding, comprising:

[0006] The main frame has multiple cavities, which are connected by pressure balancing pipes.

[0007] A piston is provided in multiple ways corresponding to the cavity, and is movably disposed in each of the multiple cavities. The top of the piston is used to receive the pressure-receiving material.

[0008] The piston is sealed in the cavity, which is filled with a pressure-balancing liquid. The pressure is transmitted between the pistons through the pressure-balancing liquid to maintain pressure balance.

[0009] In one embodiment, a pipe interface is provided on the side of the cavity, and the pressure balancing pipe is connected to the cavity through the pipe interface.

[0010] In one embodiment, the pressure balancing device further includes a connecting portion disposed outside the frame body and connected to the cavity via the pressure balancing pipe.

[0011] In one embodiment, the connecting portion is also connected to a liquid injection pipe, which is used to inject the pressure balancing liquid into the pressure balancing pipeline.

[0012] In one embodiment, the pressure balancing device further includes a pressure gauge connected to the cavity for detecting the pressure value of the cavity.

[0013] In one embodiment, multiple pressure gauges are provided, each of which is located on the outside of the frame body and connected to a corresponding cavity.

[0014] In one embodiment, a seal is provided between the piston and the cavity to prevent leakage of pressure-balancing liquid within the cavity.

[0015] This utility model embodiment sets up multiple cavities in the frame body and connects each cavity through a pressure balancing pipe. Pressure is transmitted using a pressure balancing liquid to maintain pressure balance between the cavities, thereby achieving pressure balance in the multi-press molding process. This ensures that the pressure on the material to be pressed on the piston is uniform and consistent, which not only improves production efficiency but also enhances the stability and consistency of product quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of a pressure balancing device for multi-shot compression molding provided in this embodiment of the present invention;

[0018] Figure 2 An exploded view of a pressure balancing device for multi-shot pressing provided in an embodiment of this utility model.

[0019] Markings in the image:

[0020] 10. Frame body; 11. Cavity; 12. Pressure balancing pipe; 20. Piston; 30. Connecting part; 31. Injection pipe; 40. Pressure gauge. Detailed Implementation

[0021] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0023] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0024] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0025] Please see below. Figure 1 and Figure 2 The present invention provides a pressure balancing device for multi-shot compression molding, specifically comprising:

[0026] The frame body 10 is provided with multiple cavities 11, which are connected to each other through pressure balancing pipes 12;

[0027] Piston 20 is provided with multiple corresponding cavities 11 and is movably disposed in multiple cavities 11. The top of the piston is used to receive the pressure material.

[0028] The piston 20 is sealed in the cavity 11, which is filled with a pressure balancing liquid. Multiple pistons 20 transmit pressure through the pressure balancing liquid to maintain pressure balance.

[0029] In this embodiment, multiple cavities are set in the frame body and connected to each cavity through a pressure balancing pipe. Pressure is transmitted using a pressure balancing liquid to maintain pressure balance between the cavities, thereby achieving pressure balance in the multi-press molding process. This ensures that the pressure on the material to be pressed on the piston is uniform and consistent, which not only improves production efficiency but also enhances product quality stability and consistency.

[0030] In specific application scenarios, when pressing operations are performed on multiple pistons 20 simultaneously, if the pressure on one piston 20 is too high, the pressure balancing liquid quickly compensates through the pipe 12, adjusting the pressure in other chambers 11 to ensure that the pressure on each piston 20 is consistent. This avoids material forming defects caused by uneven pressure, ensures the reliability of product quality and the stability of the production process, and effectively improves overall production efficiency and finished product qualification rate.

[0031] In specific embodiments, the number of cavities 11 can be adjusted according to actual conditions to meet different pressing and molding requirements. Furthermore, the specific selection of the pressure balancing fluid can be based on actual operating temperature, pressure conditions, and material properties to ensure stability under different temperature and pressure conditions, thus adapting to different process requirements. For example, an oily liquid can be selected as the pressure balancing fluid.

[0032] In one embodiment, a pipe interface is provided on the side of the cavity 11, and the pressure balancing pipe 12 is connected to the cavity 11 through the pipe interface.

[0033] In this embodiment, by providing a pipe interface on the side of the cavity 11, the pressure balancing pipe 12 is connected to the cavity 11 through the pipe interface, ensuring liquid flow. Thus, through the adjustment function of the pressure balancing pipe 12, the dynamic balance of pressure in each cavity 11 is achieved, optimizing the molding effect.

[0034] In one embodiment, the pressure balancing device further includes a connecting portion 30, which is disposed outside the frame body 10 and connected to the cavity 11 through a pressure balancing pipe 12.

[0035] In this embodiment, by providing a connecting part 30 between the cavities 11 and connecting them through a pressure balancing pipe 12, it is ensured that the external pressure is evenly transmitted to each cavity 11.

[0036] In practical applications, a connecting part 30 can be set between every two cavities 11, or a connecting part 30 can be set to connect multiple cavities 11, flexibly adapting to different pressing and molding requirements and production conditions.

[0037] In one embodiment, the connecting part 30 is also connected to a liquid injection pipe 31, which is used to inject pressure balancing liquid into the pressure balancing pipe 12.

[0038] In this embodiment, the injection tube 31 injects pressure balancing liquid into the pressure balancing pipe 12 through the connecting part 30, thereby utilizing the fluidity and stability of the pressure balancing liquid to ensure pressure balance among the chambers 11.

[0039] In one embodiment, the pressure balancing device further includes a pressure gauge 40 connected to the cavity 11 for detecting the pressure value of the cavity 11.

[0040] Furthermore, multiple pressure gauges 40 are provided, all of which are located on the outside of the frame body 10 and connected to the corresponding cavities 11 via pressure pipes.

[0041] In this embodiment, by setting multiple pressure gauges 40 connected to each cavity 11, the pressure changes of each cavity 11 are monitored in real time. This allows the speed and force of pressing the material to be adjusted using the detection data, the molding pressure to be precisely controlled, the pressing and molding process to be further optimized, and product quality and production efficiency to be improved.

[0042] In one embodiment, a seal is provided between the piston 20 and the cavity 11 to prevent leakage of pressure-balancing fluid within the cavity 11.

[0043] In this embodiment, by providing a seal between the piston 20 and the cavity 11, leakage of the pressure-balancing liquid inside the cavity 11 can be effectively prevented, ensuring the sealing and cleanliness of the pressing process, and further improving product quality and the cleanliness of the production environment. In specific application scenarios, the seal can be a sealing ring fitted on the piston 20, or a sealing strip embedded in the inner wall of the cavity 11, etc.

[0044] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple; relevant parts can be referred to in the method section. It should be noted that those skilled in the art can make various improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

[0045] It should also be noted that, in this specification, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A pressure balancing device for multi-shot compression molding, characterized in that, include: The frame body (10) is provided with multiple cavities (11), and the multiple cavities (11) are connected to each other through pressure balancing pipes (12); Pistons (20) are provided in multiple ways corresponding to the cavities (11), and are movably disposed in the multiple cavities (11). The top of the pistons (20) is used to receive the pressure material. The piston (20) is sealed in the cavity (11), which is filled with a pressure-balancing liquid. The pressure is transmitted between the multiple pistons (20) through the pressure-balancing liquid to maintain pressure balance.

2. The pressure balancing device according to claim 1, characterized in that, The cavity (11) is provided with a pipe interface on its side, and the pressure balancing pipe (12) is connected to the cavity (11) through the pipe interface.

3. The pressure balancing device according to claim 1, characterized in that, It also includes a connecting part (30), which is disposed outside the frame body (10) and connected to the cavity (11) through the pressure balancing pipe (12).

4. The pressure balancing device according to claim 3, characterized in that, The connecting part (30) is also connected to an injection pipe (31), which is used to inject the pressure balancing liquid into the pressure balancing pipe (12).

5. The pressure balancing device according to claim 1, characterized in that, It also includes a pressure gauge (40) connected to the cavity (11) for detecting the pressure value of the cavity (11).

6. The pressure balancing device according to claim 5, characterized in that, Multiple pressure gauges (40) are provided, and each pressure gauge (40) is located on the outside of the frame body (10) and connected to the corresponding cavity (11).

7. The pressure balancing device according to claim 1, characterized in that, A seal is provided between the piston (20) and the cavity (11) to prevent leakage of pressure-balanced liquid inside the cavity (11).

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