A new type of double-piston mini-cylinder body structure

Abstract

The utility model discloses a novel double piston mini cylinder body structure, its characterized in that, including cylinder body and set up inside the cylinder body and be used for realizing double -deck pressure boost's double piston structure and set up on the cylinder body with the valve needle cooperation of double piston structure, the inside of cylinder body is supported block and is divided into two complete working cavities, the working cavity is respectively upper piston cavity and lower piston cavity. The utility model has the beneficial effect that: the utility model adopts double piston design through compact layout, realizes higher performance under the same volume, two pistons can work synchronously, provides superimposed thrust, reduces the gas consumption through optimizing the gas circuit design (share intake valve), and the core value of double piston small cylinder is in through structural innovation, breaks through the performance bottleneck of traditional cylinder under the premise of miniaturization, has the power, precision and reliability, especially suitable for the demand of modern industry to high efficiency, intelligence, compact.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic drive technology, and in particular to a novel dual-piston mini cylinder block structure. Background Technology

[0002] See Figure 1 Traditional cylinders consist of a single piston 1 and a cylinder 2. Air is introduced through the air inlet on the cylinder to drive the piston 1, limiting the valve needle stroke (≤6.5mm) and achieving a peak pressure of 10MPa. Due to the single-piston design of traditional cylinders, the limited area of ​​piston 1 and its large frame shape make it difficult to meet the space constraints and high pressure requirements (≥10MPa) of multi-cavity molds during injection molding. Significant drawbacks exist, particularly in the following scenarios: 1. Space limitations: The mold cavity spacing needs to be ≥50mm to accommodate the cylinder, leading to increased mold size and cost. 2. Insufficient pressure: When injection molding high-viscosity engineering plastics or thin-walled complex structural parts, the output force of single piston 1 is insufficient, requiring an additional booster pump, increasing energy consumption and noise.

[0003] When customers have small requirements for the spacing between points, in order to avoid the traditional cylinder having a large opening size, customers need to increase the spacing to meet the requirements, which will increase the customer's cost. Sometimes, some products have special structures that cannot increase the spacing, or special materials and structural requirements are high, which ordinary cylinders cannot meet. Therefore, when facing these needs, existing technologies often need to be equipped with booster pumps or other auxiliary devices, which not only increases costs but also affects the quality of the working environment.

[0004] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a novel dual-piston mini cylinder block structure to address the aforementioned shortcomings and defects of the existing technology.

[0006] The technical problem to be solved by this utility model can be achieved by the following technical solution:

[0007] A novel dual-piston mini cylinder structure is characterized by comprising a cylinder body, a dual-piston structure disposed inside the cylinder body for achieving dual-layer pressurization, and a valve needle disposed on the cylinder body and cooperating with the dual-piston structure. The interior of the cylinder body is divided into two complete working chambers by a support block, the working chambers being an upper piston chamber and a lower piston chamber, respectively.

[0008] In a preferred embodiment of the present invention, the dual-piston structure includes an upper piston disposed inside the cylinder and arranged in the upper piston cavity, and a lower piston arranged coaxially with the upper piston.

[0009] In a preferred embodiment of the present invention, a first air inlet is provided in the middle of the lower piston to drive the double piston structure downward.

[0010] In a preferred embodiment of the present invention, a second air inlet is provided on the side of the cylinder to drive the dual-piston structure upward.

[0011] In a preferred embodiment of the present invention, the first air inlet and the second air inlet are controlled by a solenoid valve to switch the air path.

[0012] Due to the adoption of the above technical solutions, the beneficial effects of this utility model are as follows: This utility model adopts a dual-piston coaxial layout, which is achieved through a double-layer cylinder body, increasing the maximum output pressure to 2.2 times that of the traditional design; moreover, it has a built-in diversion air passage to reduce air pressure loss and ensure synchronous response of the dual pistons; the total height of the cylinder body of this utility model is compressed to 45mm to adapt to a 35mm cavity spacing, reducing weight by 40% and reducing mold layout space by 30%, making it suitable for compact multi-cavity molds and high-pressure injection molding; the output pressure of this utility model is increased to 22MPa, supporting high-temperature and high-shear force scenarios; it also eliminates the need for a booster pump and supporting pipelines, reducing equipment investment and energy consumption. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the existing technology.

[0015] Figure 2 This is a schematic diagram of the structure of this utility model.

[0016] Figure 3 yes Figure 2 AA cross-section view.

[0017] Figure 4 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0019] See Figures 2 to 4 The novel dual-piston mini cylinder structure shown includes a cylinder body 10, a dual-piston structure 20 disposed inside the cylinder body 10 for achieving dual-layer pressurization, and a valve needle 30 disposed on the cylinder body 10 and cooperating with the dual-piston structure 20. The interior of the cylinder body 10 is divided into two complete working chambers by a support block 11, namely an upper piston chamber 10a and a lower piston chamber 10b.

[0020] The dual-piston structure 20 includes an upper piston 21 disposed inside the cylinder 10 and arranged within the upper piston cavity 10a, and a lower piston 22 arranged coaxially with the upper piston 21. In this embodiment, the dual-piston structure 20 is a coaxial nested structure of two pistons.

[0021] The lower piston 22 has a first air intake port 22a at its center to drive the dual-piston structure 20 downward. The cylinder 10 has a second air intake port 12 at its side to drive the dual-piston structure 20 upward. In this embodiment, the first air intake port 22a and the second air intake port 12 are controlled by a solenoid valve to switch the air path.

[0022] In use, when the second air inlet 12 drives the upper piston 21 and lower piston 22 upward (stroke ≥ 8.5mm), the valve needle 30 is fully open; when the first air inlet 22a drives the upper piston 21 and lower piston 22 downward, the valve needle 30 is fully closed. This invention achieves double the stroke switching in the traditional mode and increases the piston force, which can effectively help the machine achieve higher atmospheric pressure when the pressure is insufficient.

[0023] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel dual-piston mini cylinder block structure, characterized in that, It includes a cylinder body, a dual-piston structure disposed inside the cylinder body for achieving dual-layer pressurization, and a valve needle disposed on the cylinder body and cooperating with the dual-piston structure. The interior of the cylinder body is divided into two complete working chambers by a support block, namely an upper piston chamber and a lower piston chamber.

2. The novel dual-piston mini cylinder block structure according to claim 1, characterized in that, The dual-piston structure includes an upper piston disposed inside the cylinder and arranged in the upper piston cavity, and a lower piston arranged coaxially with the upper piston.

3. The novel dual-piston mini cylinder block structure according to claim 2, characterized in that, The lower piston has a first air inlet in the middle for driving the dual-piston structure downward.

4. The novel dual-piston mini cylinder block structure according to claim 3, characterized in that, The side of the cylinder is provided with a second air intake port for driving the dual-piston structure upward.

5. The novel dual-piston mini cylinder block structure according to claim 4, characterized in that, The first air inlet and the second air inlet are controlled by a solenoid valve to switch the air path.

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