High-pressure gas supply mechanism for gas expansion forming

Abstract

The utility model discloses a high-pressure gas supply mechanism for inflatable forming, which is connected with a forming die of an inflatable forming device, the forming die is provided with a die cavity and a high-pressure channel, and one end of the high-pressure channel is communicated with the die cavity; the high-pressure gas supply mechanism comprises an air compressor, a supply energy storage mechanism and a high-pressure gas conveying pipeline, the air compressor is communicated with the supply energy storage mechanism through the high-pressure gas conveying pipeline, the supply energy storage mechanism is communicated with the high-pressure channel through the high-pressure gas conveying pipeline, the supply energy storage mechanism comprises a plunger type high-pressure energy accumulator, and the plunger type high-pressure energy accumulator is communicated with the high-pressure channel through the high-pressure gas conveying pipeline. In the working state, a plunger rod of the plunger type high-pressure energy accumulator pushes high-pressure gas to the forming die. High-pressure gas generated by the air compressor is stored in advance in a centralized mode through the energy storage mechanism, enough high-pressure gas can be provided instantly when needed, and gas expansion forming efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe fitting forming processing equipment, concretely relates to a high pressure gas supply mechanism for gas expansion forming. BACKGROUND

[0002] Pipe fittings are parts used for connection, control, change of direction, flow distribution, sealing and support in a pipeline system; metal conductor pipe fittings of various shapes and sizes are widely used in the fields of aerospace, automobile, petrochemical industry and power system. The metal conductor pipe fittings have complex and irregular surface shapes in many cases, different parts of the same part have different cross-sectional shapes, and it is difficult to obtain the pipe fittings with complex shapes through direct mechanical processing. At the same time, the mechanical strength of the pipe fitting material is too large to be formed. In order to manufacture the complex pipe fittings from the pipe blank with simple shape to meet the accuracy and quality requirements, the pipe blank is heated, high pressure gas is introduced into the pipe blank, and the original pipe blank is formed into the pipe fitting with the required shape under the action of the gas pressure.

[0003] The existing gas pressure forming device has the following disadvantages:

[0004] Most of the existing gas pressure forming devices use air compressors to provide high pressure gas, which is difficult to provide sufficient high pressure gas in a short time, and the working efficiency needs to be improved. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at overcoming the above-mentioned problems, and provides a high pressure gas supply mechanism for gas expansion forming. The high pressure gas supply mechanism pre-concentrates the high pressure gas generated by the air compressor through the energy storage mechanism, and can provide sufficient high pressure gas instantly when needed, which is beneficial to improve the gas expansion forming efficiency.

[0006] The utility model achieves the purpose by the following technical scheme:

[0007] A high pressure gas supply mechanism for gas expansion forming is connected with a forming die of a gas expansion forming device,

[0008] A die cavity and a high pressure channel are arranged on the forming die, and one end of the high pressure channel is communicated with the die cavity;

[0009] The high pressure gas supply mechanism comprises an air compressor, a supply energy storage mechanism and a high pressure gas conveying pipeline, the air compressor is communicated with the supply energy storage mechanism through the high pressure gas conveying pipeline, and the supply energy storage mechanism is communicated with the high pressure channel through the high pressure gas conveying pipeline.

[0010] The working principle of the above-mentioned high pressure gas supply mechanism for gas expansion forming is as follows:

[0011] In work, the air compressor is started, high pressure gas is continuously generated by the air compressor and is delivered to the energy supply mechanism through the first high pressure gas delivery pipeline, and is stored by the energy supply mechanism; when the pipe is needed to be air expanded, the energy supply mechanism can quickly release a large amount of stored high pressure gas, and the high pressure gas is delivered to the high pressure channel and the mold cavity through the first high pressure gas delivery pipeline, and then the pipe is inflated until the pipe is formed, which is beneficial to improve the air expansion forming efficiency.

[0012] In an preferred embodiment of the utility model, the high pressure gas delivery pipeline comprises a first high pressure gas delivery pipeline and a second high pressure gas delivery pipeline, the first high pressure gas delivery pipeline is connected between the air compressor and the energy supply mechanism, and the second high pressure gas delivery pipeline is connected between the energy supply mechanism and the other end of the high pressure channel.

[0013] In an preferred embodiment of the utility model, the energy supply mechanism comprises a plunger type high pressure energy accumulator, and the plunger type high pressure energy accumulator is provided with two and is arranged in parallel.

[0014] First, when the high pressure gas is released, the plunger rod in the plunger type high pressure energy accumulator moves synchronously, continuously extrudes the high pressure gas and pushes the gas out, and the inner cavity volume is reduced, so that the gas pressure of the gas delivered to the forming mold can be maintained unchanged (even can be pressurized), the processing requirement is met, and the processing quality is ensured.

[0015] Second, the high pressure gas is pushed by the plunger rod, the inflation speed of the forming mold can be improved, and the processing efficiency is improved.

[0016] Third, since the gas pressure of the gas delivered by the plunger type high pressure energy accumulator is unchanged, the air compressor does not need to be pressurized again, time is saved, and efficiency is further improved.

[0017] In an preferred embodiment of the utility model, the forming mold comprises an upper die, a lower die and a sealing punch.

[0018] The mold cavity comprises an upper die cavity arranged on the upper die and a lower die cavity arranged on the lower die.

[0019] The sealing punch is provided with the high pressure channel.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The high pressure gas supply mechanism for air expansion forming of the utility model preconcentrates the high pressure gas generated by the air compressor through the energy supply mechanism, and can provide sufficient high pressure gas instantaneously when needed, which is beneficial to improve the working efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The high-pressure gas supply mechanism of the utility model is used in the structure diagram of the air inflation forming device. DETAILED DESCRIPTION

[0023] In order to make the technical personnel in the art well understand the technical scheme of the utility model, the utility model is further described below in combination with examples and drawings, but the implementation of the utility model is not limited to this.

[0024] Referring to Figure 1 The high-pressure gas supply mechanism for air inflation forming of the embodiment is connected with a forming die of an air inflation forming device, wherein the forming die comprises an upper die 1, a lower die 2 and a sealing punch 3; the upper die 1 is provided with an upper die cavity 1-1, and the lower die 2 is provided with a lower die cavity 2-1.

[0025] Referring to Figure 1 The sealing punch 3 is provided with a high-pressure channel 3-1, and one end of the high-pressure channel 3-1 communicates with the upper die cavity 1-1 and the lower die cavity 2-1.

[0026] Further, one end of the sealing punch 3 extends into the upper die cavity 1-1 and the lower die cavity 2-1, and the other end of the sealing punch 3 is connected with a driving end of a feeding driving mechanism, and the sealing punch 3 is driven by the feeding driving mechanism to perform punch forming and sealing on the end part of the pipe.

[0027] Referring to Figure 1 The high-pressure gas supply mechanism comprises an air compressor 4, a supply energy storage mechanism and a high-pressure gas delivery pipeline, the high-pressure gas delivery pipeline comprises a first high-pressure gas delivery pipeline 5 and a second high-pressure gas delivery pipeline 6, the first high-pressure gas delivery pipeline 5 is connected between the air compressor 4 and the supply energy storage mechanism, and the second high-pressure gas delivery pipeline 6 is connected between the supply energy storage mechanism and the other end of the high-pressure channel 3-1.

[0028] Referring to Figure 1 The supply energy storage mechanism comprises two parallelly arranged plunger type high-pressure energy storage devices 7.

[0029] First, when the high-pressure gas is released, the plunger rods in the plunger type high-pressure energy storage devices move synchronously, continuously extrude and push out the high-pressure gas, and reduce the volume of the inner cavity, so that the gas pressure of the gas delivered to the forming die is maintained unchanged, the processing requirements are met, and the processing quality is ensured.

[0030] Second, the high-pressure gas is pushed by the plunger rods, so that the inflation speed of the forming die can be improved, and the processing efficiency is improved.

[0031] Third, since the gas pressure of the gas delivered by the plunger type high pressure energy storage device is constant, the air compressor does not need to be recharged, saving time and further improving efficiency.

[0032] Referring to Figure 1 The working principle of the air inflation forming device is as follows:

[0033] When working, the air compressor 4 is started, high pressure gas is continuously generated by the air compressor 4 and delivered to the energy storage mechanism through the first high pressure gas delivery pipeline 5 for centralized storage; when air inflation forming of the pipe is needed, the energy storage mechanism can quickly release a large amount of stored high pressure gas, which is delivered to the high pressure channel 3-1, the upper die cavity 1-1 and the lower die cavity 2-1 through the first high pressure gas delivery pipeline 5, and then the pipe is inflated until the pipe is formed, which is beneficial to improve the air inflation forming efficiency.

[0034] The above is the preferred embodiment of the present application, but the embodiment of the present application is not limited by the above content, any change, modification, replacement, combination, simplification made without departing from the spirit and principle of the present application shall be an equivalent replacement method, which is included in the protection scope of the present application.

Claims

1. A high-pressure gas supply mechanism for air forming, connected with a forming die of an air forming device, characterized in that, a die cavity and a high-pressure channel are arranged on the forming die, and one end of the high-pressure channel is communicated with the die cavity; the high-pressure gas supply mechanism comprises an air compressor, a supply energy storage mechanism and a high-pressure gas delivery pipeline, the air compressor is communicated with the supply energy storage mechanism through the high-pressure gas delivery pipeline, and the supply energy storage mechanism is communicated with the high-pressure channel through the high-pressure gas delivery pipeline.

2. The high-pressure gas supply mechanism for air-forming according to claim 1, characterized by the supply energy storage mechanism comprises a plunger type high-pressure energy storage device, and in a working state, a plunger rod of the plunger type high-pressure energy storage device pushes high-pressure gas to the forming die.

3. The high-pressure gas supply mechanism for air-forming according to claim 1, characterized by, The plunger type high-pressure energy storage device is provided with two and is arranged in parallel.

4. The high-pressure gas supply mechanism for air-forming according to claim 1, characterized by The high-pressure gas delivery pipeline comprises a first high-pressure gas delivery pipeline and a second high-pressure gas delivery pipeline, the first high-pressure gas delivery pipeline is connected between the air compressor and the supply energy storage mechanism, and the second high-pressure gas delivery pipeline is connected between the supply energy storage mechanism and the other end of the high-pressure channel.

5. The inflation molding apparatus according to claim 1, wherein The forming die comprises an upper die, a lower die and a sealing punch; the die cavity comprises an upper die cavity arranged on the upper die and a lower die cavity arranged on the lower die; the sealing punch is provided with the high-pressure channel.

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