WO2016033998A1

WO2016033998A1 - Bottle blowing structure and bottle blowing method

Info

Publication number: WO2016033998A1
Application number: PCT/CN2015/080820
Authority: WO
Inventors: 邹大群; 吴志刚; 宋奎伟; 郭利民; 刘青山
Original assignee: 广州达意隆包装机械股份有限公司
Priority date: 2014-09-03
Filing date: 2015-06-04
Publication date: 2016-03-10
Also published as: CN104228042A

Abstract

A bottle blowing structure and bottle blowing method; the bottle blowing structure recycles gas in a container used in a first bottle blowing and a second bottle blowing, and applies the recycled low-pressure gas in a subsequent bottle blowing, and repeats the cycle, thus reducing a low-pressure gas supply from an external gas source, reducing the consumption of high-pressure gas, improving an energy utilization rate, reducing energy consumption resulting from supplying compressed air from an external gas source device to a container blowing machine, reducing the machining cost of the container blowing machine, and being environmentally friendly.

Description

Specification Name of Invention: A Blowing Structure and Blowing Method

Technical field

[0001] The present invention relates to a blowing container machine, and more particularly to a blowing bottle structure and a blowing method in a blowing container machine.

Background technique

[0002] The blowing container machine is widely used in the field of filling. At present, the blowing structure in the blowing container machine includes a high-pressure tank connected with the external air source device, and the high-pressure tank is respectively connected with the pressure reducing valve and the main blowing valve through the pipeline. The pressure reducing valve is connected to the low-pressure gas storage tank through a pipeline, the main blowing valve is connected to an air blowing pipe for blowing a bottle, and the air blowing pipe is connected with an exhaust valve through a pipeline, and the low-pressure gas storage tank passes through the pipe The road is in communication with the pre-blowing valve, and the pre-blowing valve is connected to the blowing pipe through the pipeline. When it is necessary to blow-form the preform preform, first close all the valves, then transfer the preform to the appropriate position of the blow mold, close the blow mold, and seal the preform preform, then幵减压减压 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , At the same time, the stretching mechanism in the blowing container machine also contacts the bottom of the preform preform and stretches to complete the preform preforming; after the preform preform is completed, the pre-blowing valve and the pressure reducing valve are closed, 幵The main blow valve, the gas flowing into the high pressure tank from the external air source device, is blown into the preform preform through the air blowing pipe, and finally the container is blow molded; after the container is blow molded, the main blow valve is closed. And the exhaust valve is smashed to discharge excess gas in the container, thereby completing the entire blow molding process of the container. However, after the container is blown, the gas discharged from the exhaust valve contains more energy, which cannot be recycled, resulting in a large amount of energy consumption, and the compressed air supplied to the blow container by the external air source device. Energy consumption and processing costs of the blow molding machine.

technical problem

[0003] The present invention is directed to a blow molding structure and a blowing method capable of recycling and recycling an effective gas in a container, which greatly reduces energy consumption.

Problem solution

Technical solution

[0004] A blow molding structure according to the present invention includes a high pressure tank connected to an external air source device pipeline, a high pressure tank The main blow valve is connected to the blow pipe for blowing the bottle, and the blow pipe is connected with the exhaust valve through the pipeline, and the low pressure reducing valve passes through the pipeline. The low-pressure gas storage tank is connected to the pre-blowing tank through the pipeline, and the pre-blowing valve and the air blowing pipeline are connected through the pipeline, wherein the low-pressure gas storage tank is also connected to the low-pressure recovery valve through the pipeline. The low-pressure recovery valve is connected to the air blowing pipe through the pipeline; the high-pressure gas enters the high-pressure tank, is depressurized by the low-pressure pressure reducing valve, and then enters the low-pressure gas storage tank, and then the low-pressure gas storage tank passes through the pre-blowing valve and enters the air blowing pipe to carry on the preform Pre-blowing; high-pressure gas is passed from the high-pressure tank through the main blowing valve into the blowing pipe to finally blow the preform into a container; after the container is blown, the gas in the container is recovered from the blowing pipe through the low-pressure recovery valve to the low-pressure gas storage tank. Until the gas pressure in the vessel drops to the lowest value of low pressure gas recovery, stop recovering the low pressure gas.

A method of blowing a bottle, the steps of which are as follows:

1) Close all valves, then transfer the preforms to the appropriate position of the blow mold, close the blow mold, align the blow pipe to the preform preform, and seal the preform preform;

[0007] 2) 幵低压 low-pressure pressure reducing valve, the high-pressure gas entering the high-pressure tank from the external air source device is decompressed and then flows into the low-pressure gas storage tank to inflate it, and after the inflation is completed, the low-pressure pressure reducing valve is closed;

[0008] 3) pre-blowing valve, the gas in the low-pressure gas storage tank pre-blowing the preform preform through the air blowing pipe;

[0009] 4) closing the pre-blowing valve, opening the main blowing valve, and the gas in the high-pressure tank is re-blowing the preform preform through the air blowing pipe, and finally the container is blow molded;

[0010] 5) closing the main blow valve, the low pressure recovery valve is opened, and the gas in the container is recovered from the air blowing pipe into the low pressure gas storage tank. When the gas pressure in the container is lowered to the lowest value of the low pressure gas recovery, the low pressure recovery valve is closed. ;

[0011] 6) opening the exhaust valve, discharging the remaining gas in the container, completing the container blowing and gas recovery process;

[0012] 7) Repeat steps 3 through 6, repeating the cycle until all preform preforms are blown.

Advantageous effects of the invention

Beneficial effect

The invention relates to a blowing structure and a blowing method. According to the blowing structure, the gas in the first blowing bottle and the re-boiled container is recovered, and the recovered low-pressure gas is applied to the next time. In the blowing bottle, the cycle is repeated. Therefore, the supply of low-pressure gas by the external air source can be reduced, the consumption of the high-pressure gas can be further reduced, the utilization rate of the energy can be improved, and the compressed air energy provided by the external air source device to the blowing container machine can be reduced. It consumes the processing cost of the blowing machine, and is energy-saving and environmentally friendly. Brief description of the drawing

DRAWINGS

1 is a schematic view of a blow molding structure of the present invention.

2 is a connection diagram of a blowing bottle structure of the present invention.

Embodiments of the invention

[0016] A blow molding structure, as shown in FIG. 1 and FIG. 2, includes a high pressure tank 1 in communication with an external air source device 7, the high pressure tank 1 and the low pressure reducing valve 5 and the main blowing valve 6 respectively. In connection, the main blow valve 6 communicates with an air blowing pipe for blowing a bottle, and the air blowing pipe is connected with an exhaust valve through a pipeline, and the low pressure reducing valve 5 communicates with the low pressure gas storage tank 3 through a pipeline, and the low pressure storage The gas tank 3 communicates with the pre-blowing valve 10 through a pipeline, and the pre-blowing valve 10 communicates with the blowing pipeline through the pipeline, and the low-pressure gas storage tank 3 is also communicated with the low-pressure recovery valve 11 through the pipeline, and the low-pressure recovery valve 11 is connected through the pipeline. To the air blowing pipe; the high pressure gas enters the high pressure tank 1, is decompressed by the low pressure reducing valve 5, and then enters the low pressure gas storage tank 3, and then the low pressure gas storage tank 3 passes through the pre-blowing valve 10 to enter the blowing pipe to pre-form the preform 12 Blowing; high pressure gas is passed from the high pressure tank 1 through the main blowing valve 6 into the blowing pipe to finally blow the preform 12 to form a container; after the container is blown, the gas in the container is recovered by the blowing pipe through the low pressure recovery valve 11 to the low pressure storage. In the gas tank 3, until the gas pressure in the container is lowered to Recovered as low pressure gas recovery inch low pressure gas is stopped.

[0017] The high pressure tank 1 is also in communication with the medium pressure reducing valve 4, the medium pressure reducing valve 4 is connected to the medium pressure gas storage tank 2 through the pipeline, and the medium pressure gas storage tank 2 is respectively connected to the medium pressure storage tank 2 The pressure blowing valve 8 and the medium pressure recovery valve 9 are in communication, and the medium pressure blowing valve 8 and the medium pressure recovery valve 9 are connected to the blowing pipe through the pipeline, and the high pressure gas enters the high pressure tank 1, and the medium pressure reducing valve 4 After depressurization, it enters the medium-pressure gas storage tank 2, and then the medium-pressure gas storage tank 2 passes through the medium-pressure air blowing valve 8 to enter the air blowing pipe to perform pre-blowing of the preform 12 after the second blowing; the preform 12 is finally blown. After being made into a container, the gas in the container is recovered by the air blowing pipe through the intermediate pressure recovery valve 9 into the medium pressure gas storage tank 2, until the gas pressure in the container is lowered to the lowest value of the medium pressure gas recovery, and the recovery of the medium pressure gas is stopped. Since the low-pressure blown preform is only preformed and stretched to the maximum height, the preform is once formed into position by high-pressure blowing, which will make the amount of high-pressure gas larger and more expensive. Even if the low-pressure gas is recovered through the recovery valve, most of the energy is wasted. Therefore, by setting the medium-pressure gas storage tank, the preform can be further molded by blowing the crucible and further blowing through the medium-pressure gas. Further, when the bottle is blown with a high pressure, the loss of the high pressure gas can be reduced, and the container can be quickly formed, and the medium pressure gas in the container can be performed. Recycling, it can also recycle medium-pressure gas, greatly reduce the supply of medium-pressure gas to external air source, save energy and environmental protection, and low processing cost. In addition, through three times of blowing, the force can be stabilized during expansion of the preform, and the expansion process Uniform changes do not cause the preform to suddenly expand to the maximum extent and damage the preform.

[0018] The low pressure gas storage tank 3 is also in communication with a pneumatic device, which is an embryonic mechanism or a stretching mechanism. By connecting the low-pressure gas storage tank to other low-pressure driving mechanisms such as the embryonic mechanism or the stretching mechanism, the recovered low-pressure gas can be further effectively utilized, thereby further reducing the energy consumption and reducing the production cost.

[0019] The high pressure gas pressure value in the high pressure tank 1 is P _{1 ;} the medium pressure gas pressure value in the medium pressure gas storage tank 2 is P ₂ , and the low pressure gas pressure value in the low pressure gas storage tank 3 For P ₃ , PP ^PS satisfies the relationship: Ρ χ ≥ Ρ Ρ Ρ ^ ΠΡ ₂ ≤ (Ρ ₁₊ Ρ ₃ ) II. By setting the relationship between the gas pressure values in the high pressure tank, the medium pressure gas storage tank and the low pressure gas storage tank, it is possible to effectively ensure the blowing of the container, reduce the waste of high pressure gas, and control the amount of high pressure gas. .

[0020] A method of blowing a bottle, the steps of which are as follows: (1) closing all the valves, then conveying the preform preform 12 to the appropriate position of the blowing mold, closing the blowing mold, and aligning the blowing pipe with the preform bottle a blank port and sealing the preform preform port; (2) a low pressure reducing valve 5, and the high pressure gas entering the high pressure tank 1 from the external air source device 7 is depressurized and flows into the low pressure gas storage tank 3, After inflating, after the inflation is completed, the low pressure reducing valve 5 is closed; (3) the pre-blowing valve 10 is opened, and the gas in the low-pressure gas storage tank 3 is pre-blowing the preform preform 12 through the air blowing pipe, Contacting the bottom of the preform preform by a servo mechanism or other mechanical stretching mechanism, and stretching the preform to the maximum height during the first blowing process; (4) closing the pre-blowing valve 10, opening the main blowing valve 6, high pressure The gas in the tank 1 is again blown to the preform preform via the air blowing pipe, and the final container is blown into a mold; (5) the main blow valve 6 is closed, the low pressure recovery valve 1 1 is opened, and the gas in the container is blown by the air duct Recycled into the low pressure gas storage tank 3, when the gas pressure in the vessel is reduced to low pressure gas After the minimum value is recovered, the low pressure recovery valve 1 1 is closed. The partially recovered low pressure gas can be used not only for the pre-blowing of the next preform blowing, but also for the supply of other low-pressure driving mechanisms, such as the stretching mechanism. Or the embryo mechanism, etc.; (6) Open the exhaust valve, discharge the remaining gas in the container, complete the container blowing and gas recovery process, because the pressure of the part of the gas discharged is low, the flow is slow, and it is not conducive to the blowing process The control between the turns is therefore required to be exhausted as a waste gas; (7) Repeat steps 3 through 6 and cycle until all preform preforms are blown. By sorting and recovering the gas in the first-time bottle blowing and re-blowing the bottle, the recovered low-pressure gas is applied to the next blowing bottle, and the cycle is repeated, thereby reducing the external air. The supply of medium-pressure gas and low-pressure gas further reduces the consumption of high-pressure gas, improves the utilization rate of energy, reduces the energy consumption of compressed air supplied to the blowing container by external air source equipment, and the processing cost of the blowing machine. Environmental protection.

[0021] In the second step, the same as the intermediate pressure reducing valve 4, the high-pressure gas entering the high-pressure tank 1 from the external air source device 7 is decompressed and then flows into the medium-pressure gas storage tank 2 to inflate it. After the inflation is completed, the medium pressure reducing valve 4 is closed; after the third step, the pre-blowing valve 10 is closed, the medium pressure blowing valve 8 is first opened, and the gas in the medium pressure gas storage tank 2 is preformed through the air blowing pipe pair. The preform is subjected to secondary blowing, and then the medium pressure blowing valve 8 is closed, and the main blowing valve 6 is opened. The gas in the high pressure tank 1 is finally blown to the preform preform via the air blowing duct, and the final container is blown. forming. By reusing the medium-pressure gas, the preform can be pre-formed and blown after pre-blowing the preform, since the partial pressure gas is not enough for the preform to be blown in place at one time, only the preform can be blown. Close to the shape of the molding, and then blowing a small amount of high-pressure gas, the container can be blown, greatly reducing the consumption of high-pressure gas, saving energy and environmental protection, and reducing production costs.

[0022] In step 5, the main blow valve 6 is closed, and the medium pressure recovery valve 9 is first opened, and the gas in the container is recovered from the air blowing pipe into the medium pressure gas storage tank 2, when the gas pressure in the container is lowered to the medium pressure gas After the minimum value is recovered, the medium pressure recovery valve 9 is closed; then the low pressure recovery valve 11 is opened, and the gas in the container is recovered from the air blowing pipe into the low pressure gas storage tank 3, and the gas pressure in the container is lowered to the lowest value of the low pressure gas recovery. The low pressure recovery valve 11 is closed. Through the recovery of medium-pressure gas and low-pressure gas recovery, the consumption of high-pressure gas can be further reduced, and the production cost can be reduced.

[0023] The minimum value of the medium pressure gas recovery is 18 to 24 bar, which is set according to the pressure value required during the blowing process, and the medium pressure gas in the range can effectively blow the preform twice.

[0024] The minimum value of the low-pressure gas recovery is in the range of 10 to 14 bar. By recovering the part of the gas, the preform can be pre-blow molded by using the part of the gas, and the part of the gas can also be used for the embryoping mechanism or pulling Stretching mechanisms, etc., improve the utilization rate of recycled gases, reduce production costs, and save energy and protect the environment.

Claims

Claim

[Claim 1] A blow molding structure comprising a high pressure tank (1) in communication with an external air source device (7),

The high pressure tank (1) is in communication with the low pressure reducing valve (5) and the main blowing valve (6), respectively, the main blowing valve (6) is connected to the blowing pipe for blowing the bottle, and the blowing pipe is connected through the pipeline. There is an exhaust valve, the low pressure relief valve (5) is connected to the low pressure gas storage tank (3) through a pipeline, and the low pressure gas storage tank (3) is connected to the pre-blowing valve (10) through a pipeline, and the pre-blowing valve ( 10) communicating with the air blowing pipe through the pipeline, wherein: the low pressure gas storage tank (3) is also connected to the low pressure recovery valve (11) through the pipeline, and the low pressure recovery valve (11) is connected to the air blowing pipeline through the pipeline; The high pressure gas enters the high pressure tank (1), and is decompressed by the low pressure reducing valve (5) and then enters the low pressure gas storage tank.

(3), then pre-blowing the preform (12) from the low pressure gas storage tank (3) through the pre-blowing valve (10) into the blowing pipe; the high pressure gas is passed from the high pressure tank (1) through the main blowing valve (6) The blowing pipe finally blows the preform (12) to form a container; after the container is blown, the gas in the container is recovered by the blowing pipe through the low pressure recovery valve (11) into the low pressure gas storage tank (3) until the container is inside. The gas pressure is reduced to the lowest value of low pressure gas recovery and the recovery of low pressure gas is stopped.

[Claim 2] A blow molding structure according to claim 1, wherein: said high pressure tank (1) is also in communication with a medium pressure reducing valve (4), and a medium pressure reducing valve (4) The medium pressure storage tank (2) is connected to the medium pressure gas storage tank (2) through a pipeline, and the medium pressure air blowing valve (8) and the medium pressure recovery valve (9) are respectively connected through the pipeline, the medium pressure The air blowing valve (8) and the medium pressure recovery valve (9) are connected to the air blowing pipe through the pipeline, and the high pressure gas enters the high pressure tank (1), and the medium pressure reducing valve

(4) After decompression, enter the medium-pressure gas storage tank (2), and then the medium-pressure gas storage tank (2) passes through the medium-pressure air blowing valve (8) and enters the air blowing pipe to pre-bloat the preform (12). After the preform is blown into a container, the gas in the container is recovered from the blowing pipe through the medium pressure recovery valve (9) to the medium pressure gas storage tank (2) until the gas pressure in the container is lowered to the middle The lowest value of the pressure gas recovery 吋 stop recovering the medium pressure gas.

[Claim 3] A blow molding structure according to claim 1 or 2, wherein: the low-pressure gas storage tank (3) is further connected to a pneumatic device pipeline, and the pneumatic device is a beating mechanism or Stretching mechanism.

[Claim 4] A blow molding structure according to claim 2, wherein: said high pressure tank (1) The pressure value of the high pressure gas inside is P _{1 ;} the pressure value of the medium pressure gas in the medium pressure gas storage tank (2) is P ₂ , and the pressure value of the low pressure gas in the low pressure gas storage tank (3) is P ₃ , PP ₂ and P

3 Satisfaction relationship: P 1>P 2+P 3 f ΠΡ ₂ < (P !+P ₃ ) /2.

[Claim 5] A method of blowing a bottle, characterized in that the steps are as follows:

1) Close all the valves, then transfer the preforms to the appropriate position of the blow mold, close the blow mold, align the blow pipe to the preform preform, and seal the preform preform;

2) 幵低压 low pressure reducing valve (5), the high pressure gas entering the high pressure tank (1) from the external air source equipment (7) is decompressed and then flows into the low pressure gas storage tank (3), which is inflated and inflated. When finished, close the low pressure relief valve (5);

3) The pre-blowing valve (10) is pre-blowing the gas in the low-pressure gas storage tank (3) via the air blowing pipe;

4) Close the pre-blowing valve (10), open the main blowing valve (6), and the gas in the high-pressure tank (1) is again blown through the blowing pipe to the preform preform (12). ;

5) Close the main blow valve (6), the low pressure recovery valve (1 1 ), and the gas in the container is recovered from the blow pipe to the low pressure gas storage tank (3). When the gas pressure in the container is reduced to the lowest low pressure gas recovery Value 吋, low pressure recovery valve (1 1 ) is closed;

6) Open the exhaust valve, discharge the remaining gas in the container, and complete the process of container blowing and gas recovery;

7) Repeat steps 3 through 6 and cycle until all preform preforms are blown.

[Claim 6] A method of blowing a bottle according to claim 5, wherein in the second step, the internal pressure reducing valve (4) is activated by the external air source device (7). The high pressure gas in the tank (1) is depressurized and flows into the medium pressure gas storage tank (2) to inflate it. After the inflation is completed, the medium pressure reducing valve (4) is closed; after the third step, the pre-blowing is turned off. The valve (10), the first medium pressure air blowing valve (8), the gas in the medium pressure gas storage tank (2) is subjected to secondary blowing of the preform preform via the air blowing pipe, and then the medium pressure blowing is closed. The valve (8), the main blow valve (6), and the gas in the high pressure tank (1) are finally blown to the preform preform (12) via the air blowing pipe, and the final container is blow molded.

[Claim 7] A method of blowing a bottle according to claim 5, wherein: in the fifth step, the main blowing valve (6) is closed, and the medium pressure recovery valve (9) is first opened, and the gas in the container is blown. The gas pipeline is recovered into the medium pressure gas storage tank (2). When the gas pressure in the vessel is reduced to the lowest value of the medium pressure gas recovery, the medium pressure recovery valve (9) is closed; then the low pressure recovery valve (11) is opened, the vessel The internal gas is recovered from the blow pipe to the low pressure gas storage tank (3). When the gas pressure in the vessel is reduced to the lowest value of the low pressure gas recovery, the low pressure recovery valve (11) is closed.

[Claim 8] A method of blowing a bottle according to claim 5 or 7, wherein the minimum value of the low pressure gas recovery is in the range of 10 to 14 bar.

[Claim 9] A blowing method according to claim 7, wherein the medium pressure gas recovery has a minimum value of 18 24 bar.