Method for removing residual water in cooling water channel of injection mold

Abstract

The invention discloses a method for removing residual water in a cooling water channel of an injection mold in the technical field of injection molding, and the method comprises the following steps: step 1, connecting a first ball valve with an air compressor, and enabling compressed air to enter from the first ball valve; secondly, the first stop valve and the second stop valve are closed, a second ball valve is opened, an air compressor is arranged, and 0.6-0.7 MPa high-pressure gas is introduced; thirdly, the first ball valve is slowly opened, ventilation is conducted for 60-90 s, the first ball valve is closed, and residual water in the mold water way can be cleaned away; and fourthly, when water is supplied to the mold, the first ball valve and the second ball valve are closed, the second stop valve is opened, and then the first stop valve is slowly opened. According to the scheme, residual water in the cooling water path in the injection mold can be quickly and efficiently discharged.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, and in particular to a method for removing residual water from a cooling water channel of an injection mold. Background Art

[0002] After the injection mold has completed the production task, it needs to be removed from the injection molding machine and moved to the designated mold storage area. Since there is a large amount of cooling water remaining in the cooling circuit of the mold, if it is not cleaned up in time, it will cause the water circuit to rust and shorten the service life of the mold. What's more serious is that the residual cooling water may also penetrate into the molding surface of the mold, causing the cavity to rust and eventually make the mold scrapped.

[0003] At present, the commonly used method is to use high-pressure gas to purge the cooling water channel of the mold to force the residual cooling water to be discharged. This process requires connecting each group of water channels to the air pipe one by one according to the specific grouping of the mold cooling water channels, and then turning on the air source to start purging. Generally speaking, each purge takes about five minutes to complete. During this process, the air pressure needs to be adjusted manually. If the air pressure is too high, dirty water will splash, pollute the ground and equipment, and it will be difficult to control dripping. If the air pressure is too low, the residual water in the water channel cannot be completely removed, thereby increasing the risk of mold rust. After each purge, the site needs to be cleaned, which undoubtedly adds extra time costs.

[0004] In order to improve efficiency and reduce pollution risks, it is necessary to improve the existing purging methods to ensure that residual cooling water can be effectively removed while avoiding unnecessary environmental pollution and time waste. Summary of the invention

[0005] The present invention aims to provide a method for removing residual water from a cooling water channel of an injection mold, so as to solve the problem that it takes time to remove the residual water from the cooling water channel of the existing injection mold.

[0006] A method for removing residual water from a cooling water channel of an injection mold in this solution comprises the following steps:

[0007] Step 1: Connect the first ball valve to the air compressor so that compressed air enters from the first ball valve;

[0008] Step 2: Close the first stop valve and the second stop valve, open the second ball valve, set up the air compressor, and connect 0.6-0.7MPa high-pressure gas;

[0009] Step 3: Slowly open the first ball valve, ventilate for 60 to 90 seconds, and close the first ball valve to clean the residual water in the mold water channel;

[0010] Step 4: When supplying water to the mold, close the first ball valve and the second ball valve, open the second stop valve, and then slowly open the first stop valve.

[0011] Working principle and beneficial effects of this solution: This solution uses the powerful kinetic energy of high-pressure gas to quickly blow out the residual moisture in the mold water channel, thereby achieving the purpose of cleaning. The precise control of gas is achieved by the combined use of the first ball valve, the second ball valve, the first stop valve, and the second stop valve. First, close the first stop valve and the second stop valve, and open the second ball valve to ensure that high-pressure gas only enters the mold from the predetermined path. By controlling the opening and closing time of the first ball valve, it is ensured that the gas has enough action time to clean the residual moisture inside the mold. High-pressure gas can not only discharge moisture, but also reduce the humid environment inside the mold to a certain extent, thereby reducing the possibility of rust.

[0012] This solution has five effects: 1. Improve efficiency: The water blowing efficiency has increased by 60%, significantly shortening the time for cleaning the mold water channel, making the production process more efficient. 2. Reduce air leakage: The fixed air channel joint design effectively reduces air leakage caused by loose connections, ensuring the safety and stability of operation. 3. Extend the life of the mold: By regularly cleaning the mold water channel, corrosion problems caused by residual moisture are avoided, thereby extending the service life of the mold. 4. Save time: Each time the mold is changed, the optimized valve control system can save about 3 minutes of air connection time, which is particularly beneficial for production scenarios where molds are frequently changed. 5. Easy to operate: The whole process is simple and easy, without the need for complex equipment adjustments, and can be completed by simply following the prescribed steps.

[0013] Furthermore, the diameter of the water channel of the mold is 10 mm.

[0014] Furthermore, the length of the water channel of the mold is 1.5 to 3.5 m. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a structural schematic diagram of a method for removing residual water from a cooling water channel of an injection mold. DETAILED DESCRIPTION

[0016] The following is a further detailed description through specific implementation methods:

[0017] The reference numerals in the drawings of the specification include: a first ball valve 1, a first stop valve 2, a second ball valve 3, a second stop valve 4, a cooling water system 5, a water inlet end 6, a water return end 7, a water inlet pipe 8, an air inlet pipe 9, a first branch pipe 10, a water return pipe 11, a second branch pipe 12, and a drain pipe 13.

[0018] The device used in the method for removing residual water from the cooling water channel of an injection mold of the present invention comprises an injection molding machine body, the injection molding machine body comprises a cooling water channel system 5, the cooling water channel system 5 is provided with a water inlet end 6 and a water return end 7, the water inlet end 6 is connected with a water inlet pipe 8, the water inlet pipe 8 adopts a PE hose with a diameter of 10 mm, the water inlet pipe 8 is connected with an air inlet pipe 9 and a first branch pipe 10, the air inlet pipe 9 adopts a PE hose with a diameter of 12 mm, the air inlet pipe 9 is provided with a first ball valve 1, the outer end of the first ball valve 1 is connected to an air compressor, the first branch pipe 10 is further provided with a first stop valve 2, the outer end of the first stop valve 2 is connected to a chiller, and the first stop valve 2 is connected to the water inlet end 6 of the cooling water;

[0019] The return water end 7 is connected to a return water pipe 11, which adopts a PE hose with a diameter of 10 mm. The return water pipe 11 is connected to a drain pipe 13 and a second branch pipe 12. A second ball valve 3 is provided on the drain pipe 13, and the outer end of the second ball valve 3 is connected to a sewage collection bucket. A second stop valve 4 is provided on the second branch pipe 12, and the outer end of the second stop valve 4 is connected to the return water end 7 of the chiller.

[0020] The diameter of the water channel of the mold is 10 mm, and the length of the water channel of the mold is 1.5 to 3.5 m.

[0021] The embodiment is basically as shown in the attached Figure 1 As shown: A method for removing residual water from a cooling water channel of an injection mold comprises the following steps:

[0022] Step 1: Connect the first ball valve 1 to the air compressor so that compressed air enters from the first ball valve 1;

[0023] Step 2: Close the first stop valve 2 and the second stop valve 4, open the second ball valve 3, set up an air compressor, and connect 0.6-0.7 MPa high-pressure gas;

[0024] Step 3: Slowly open the first ball valve 1, ventilate for 60 to 90 seconds, and close the first ball valve 1 to clean the residual water in the mold water channel;

[0025] Step 4: When supplying water to the mold, close the first ball valve 1 and the second ball valve 3, open the second stop valve 4, and then slowly open the first stop valve 2.

[0026] This solution uses the powerful kinetic energy of high-pressure gas to quickly blow out the residual moisture in the mold water channel, thereby achieving the purpose of cleaning. The precise control of the gas is achieved by the combined use of the first ball valve 1, the second ball valve 3, the first stop valve 2, and the second stop valve 4. First, close the first stop valve 2 and the second stop valve 4, and open the second ball valve 3 to ensure that the high-pressure gas only enters the mold from the predetermined path. By controlling the opening and closing time of the first ball valve 1, it is ensured that the gas has enough action time to clean the residual moisture inside the mold. High-pressure gas can not only discharge moisture, but also reduce the humid environment inside the mold to a certain extent, thereby reducing the possibility of rust.

[0027]

[0028]

[0029] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A method for removing residual water from a cooling water channel of an injection mold, characterized in that: The following steps are involved: Step 1: Connect the first ball valve to the air compressor so that compressed air enters from the first ball valve; Step 2: Close the first stop valve and the second stop valve, open the second ball valve, set up the air compressor, and connect 0.6-0.7MPa high-pressure gas; Step 3: Slowly open the first ball valve, ventilate for 60 to 90 seconds, and close the first ball valve to clean the residual water in the mold water channel; Step 4: When supplying water to the mold, close the first ball valve and the second ball valve, open the second stop valve, and then slowly open the first stop valve.

2. A method for removing residual water from a cooling water channel of an injection mold according to claim 1, characterized in that: The diameter of the water channel of the mold is 10mm.

3. A method for removing residual water from a cooling water channel of an injection mold according to claim 2, characterized in that: The length of the water channel of the mold is 1.5 to 3.5 meters.

Images