Intelligent management device and method for end cooling waterway of a forming production line

Abstract

The application discloses a kind of intelligent management device and management method of cooling water path at the end of forming production line, belong to the technical field of monitoring and operation and maintenance of forming production line cooling water path.The device includes die changing valve seat, six cylinder valve bodies in matrix layout, energy accumulator, filter.Die changing valve seat is equipped with multiple die changing cavities, and through the opening and closing of control valve and cavity communication, normal production mode, filter cleaning mode and pipeline blowdown cleaning mode can be selectively established.Under normal production mode, cooling water flows through filter and mold and backflows;Under filter cleaning mode, compressed air reversely flushes filter, and sewage is discharged to sewage pipeline;Under pipeline blowdown cleaning mode, forward blowing and reverse blowing can be realized respectively, to remove pipeline scale and impurities.The application can monitor operating parameters online, automatically identify abnormalities and adaptively switch working modes, realize intelligent operation and maintenance of cooling water path, rapid treatment of blockage, continuous and stable operation of cooling water path, and improve the consistency of forming product quality.

Description

Technical Field

[0001] This invention relates to the field of molding production line technology, and in particular to an intelligent management device and method for the cooling water circuit at the end of a molding production line. Background Technology

[0002] Currently, the cooling water circuit management mode applicable to various molding processes such as injection molding, die casting, and blow molding is crude. There is a lack of rapid early warning and detection methods for water channel scaling and blockage, which continuously leads to problems such as poor quality of subsequent molded products, poor process consistency, and inability to reproduce the process. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the technical problem to be solved by the present invention is to propose an intelligent management device and management method for the cooling water circuit at the end of the molding production line. Through valve design and linkage control scheme, combined with sensor monitoring module, it can automatically switch between three working conditions: normal water flow, automatic filter cleaning and mold cleaning. At the same time, it can identify abnormal operation and adaptively switch working modes to ensure the continuous and stable operation of the cooling water circuit.

[0004] To achieve this objective, the present invention adopts the following technical solution: The present invention provides an intelligent management device for cooling water circuit at the end of a molding production line, including a mold changing valve seat. Six cylinder valve bodies are installed on one side of the mold changing valve seat, and an accumulator and a filter are provided on the other side. The six cylinder valve bodies are arranged in a matrix on the mold changing valve seat, with the first control valve located at the bottom center, the second control valve and the third control valve on either side, the fifth control valve above the first control valve, the sixth control valve above the second control valve, and the fourth control valve above the third control valve. The mold-changing valve seat is provided with first to sixth mold-changing cavities corresponding to each control valve. Each mold-changing cavity has an isolation ring in the middle. When the piston end of each control valve extends to the corresponding isolation ring, the mold-changing cavity is divided into a front mold cavity and a rear mold cavity. The mold-changing valve seat is also provided with a mold-changing passage that cooperates with each mold-changing cavity. The mold-changing passage is such that the rear mold cavity of the sixth mold-changing cavity is connected to the rear mold cavity of the second mold-changing cavity, the front mold cavity of the fifth mold-changing cavity is connected to the front mold cavity of the sixth mold-changing cavity, the rear mold cavity of the fourth mold-changing cavity is connected to the rear mold cavity of the fifth mold-changing cavity, the rear mold cavity of the first mold-changing cavity is connected to the rear mold cavity of the third mold-changing cavity, and the front mold cavity of the third mold-changing cavity is connected to the front mold cavity of the fourth mold-changing cavity. The front cavity of the first mold changing cavity is connected to the cooling water inlet, the front cavity of the second mold changing cavity is connected to the cooling water outlet, the front cavity of the third mold changing cavity is connected to the sewage outlet, the rear cavity of the fourth mold changing cavity is connected to the mold cooling water inlet, the rear cavity of the fifth mold changing cavity is connected to the filter return water inlet, the front cavity of the sixth mold changing cavity is connected to the accumulator, the rear cavity of the first mold changing cavity is connected to the filter water inlet, and the rear cavity of the second mold changing cavity is connected to the mold cooling water outlet. It also includes a controller to selectively open or close each control valve. The mold changing valve seat is also equipped with a flow and temperature sensor (flow sensor and temperature sensor) for monitoring cooling water parameters, as well as a first pressure sensor that cooperates with the filter and a second pressure sensor that cooperates with the cooling water outlet. It can be switched to normal production mode, filter cleaning mode or pipeline sewage cleaning mode.

[0005] In the normal production mode, the third, fourth, fifth, and sixth control valves are closed, while the first and second control valves are open. Cooling water enters the mold sequentially from the cooling water inlet through the first mold changing cavity, the filter, the fifth mold changing cavity, and the fourth mold changing cavity, and then flows back to the cooling water outlet through the second mold changing cavity.

[0006] In the filtration and cleaning mode, the first control valve, the second control valve, the fourth control valve, and the sixth control valve are closed, while the third control valve and the fifth control valve are open. The compressed air provided by the accumulator enters the filter return port through the sixth mold changing chamber and the fifth mold changing chamber. After backwashing the filter, the sewage is discharged through the filter inlet, the rear mold chamber of the first mold changing chamber, and the rear mold chamber of the third mold changing chamber to the sewage outlet.

[0007] When the pipeline sewage cleaning mode is in the forward purging condition, the first control valve, the third control valve, the fourth control valve and the sixth control valve are closed, and the second control valve and the fifth control valve are open. Compressed air enters the mold sequentially through the sixth mold changing chamber, the fifth mold changing chamber and the fourth mold changing chamber, and then exits through the cooling water outlet through the second mold changing chamber.

[0008] When the pipeline sewage cleaning mode is reverse purging, the first, second, third, and fifth control valves are closed, and the fourth and sixth control valves are open. Compressed air enters the mold cooling outlet through the sixth mold changing chamber and the rear mold chamber of the second mold changing chamber, flows in reverse through the mold, and is discharged from the mold inlet into the fourth mold changing chamber, and then through the third mold changing chamber and discharged from the sewage outlet.

[0009] A method for intelligent management of cooling water channels at the end of a molding production line, utilizing the intelligent management device for cooling water channels at the end of a molding production line as described above, includes the following steps: S00: During normal production, close the third, fourth, fifth, and sixth control valves, and open the first and second control valves to allow the cooling water to flow forward through the filter and into the mold, and then flow back to the cooling water pipeline; S10: When the filter differential pressure or running time reaches the set threshold, close the first, second, fourth and sixth control valves, open the third and fifth control valves, use the accumulator compressed air to backwash the filter, and discharge the dirt into the sewage pipeline. S20: When it is necessary to clean the mold and pipeline, first switch to the filter cleaning mode, close the first, third, fourth and sixth control valves, and open the second and fifth control valves to allow compressed air to push the water in the pipeline in the forward direction and return it to the cooling water pipeline through the mold; then switch to the pipeline sewage cleaning mode, switch to close the first, second, third and fifth control valves, and open the fourth and sixth control valves to allow compressed air to blow the pipeline in the reverse direction and carry impurities into the sewage pipeline.

[0010] During the execution of the above method, the switching of each mode is based on the real-time detection data of the flow sensor, temperature sensor and pressure sensor, and is automatically judged and executed by the controller. In case of abnormality, an alarm is issued or the system automatically switches to the safety mode. The filter cleaning mode and the pipeline sewage cleaning mode both use the same accumulator as the air source, and the direction of compressed air flow is switched in the forward or reverse direction by the combination of the switching of each control valve.

[0011] The beneficial effects of this invention are as follows: (1) This invention is applicable to the end cooling water circuit management of various molding processes such as injection molding, die casting, and blow molding. By integrating multi-parameter sensors such as flow rate, temperature and pressure, it realizes real-time monitoring of the cooling water circuit operation status and provides rapid early warning and detection of faults such as scaling and blockage. With the controller, it can automatically identify abnormal operation and adaptively switch to normal production, filter cleaning or pipeline sewage cleaning mode without manual intervention, realize intelligent control of cooling water circuit, ensure continuous and stable cooling effect, and ensure the consistency of the quality of molded products. (2) The internal cavity of the mold changing valve seat is designed in collaboration with multiple control valves. It integrates multiple functions such as cooling water circulation, reverse air flushing of the filter and forward and reverse purging of the pipeline on a single valve block. It has a compact structure, reduces external pipeline connections, reduces leakage risk, is easy to install and maintain, and is easy to upgrade and transform on the existing molding production line. (3) The filter online automatic cleaning mode uses compressed air provided by the accumulator to backwash the filter, which can remove the blockage in the filter online, restore the filtration capacity, avoid downtime to replace the filter, improve production efficiency and reduce maintenance costs. (4) The pipeline sewage cleaning mode provides two working conditions: forward purging and reverse purging. Forward purging can push out the water accumulated in the pipeline to prevent stagnant water from deteriorating and growing algae. Reverse purging can carry away impurities such as scale, mud, and algae and discharge them directly into the sewage pipeline from the sewage outlet, fundamentally solving the pipeline blockage problem and extending the service life of the mold and cooling water circuit. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the principle of an intelligent cooling water circuit management device at the end of a molding production line provided in a specific embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of an intelligent cooling water circuit management device at the end of a molding production line provided in a specific embodiment of the present invention; Figure 3 This is a rear-view structural diagram of an intelligent cooling water circuit management device at the end of a molding production line provided in a specific embodiment of the present invention. Figure 4 This is a bottom view structural diagram of an intelligent cooling water circuit management device at the end of a molding production line provided in a specific embodiment of the present invention. Figure 5 This is a schematic diagram of the structure of the mold changing valve seat provided in a specific embodiment of the present invention; Figure 6 This is a schematic diagram of the mold-changing valve seat provided in a specific embodiment of the present invention from another perspective.

[0013] In the picture: 1. Mold changing valve seat; 11. First mold changing cavity; 12. Second mold changing cavity; 13. Third mold changing cavity; 14. Fourth mold changing cavity; 15. Fifth mold changing cavity; 16. Sixth mold changing cavity; 17. Isolation ring; 101. Front mold cavity; 102. Rear mold cavity; 111. Cooling water inlet; 121. Cooling water outlet; 131. Wastewater outlet; 141. Mold cooling water inlet; 151. Filter return water inlet; 112. Filter inlet; 142. Mold cooling water outlet; 103. Flow and temperature sensor; 104. First pressure sensor; 105. Second pressure sensor; 2. Accumulator; 3. Filter; 4. First control valve; 5. Second control valve; 6. Third control valve; 7. Fourth control valve; 8. Fifth control valve; 9. Sixth control valve. Detailed Implementation

[0014] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] To address the current crude management methods for cooling water circuits in various molding processes such as injection molding, die casting, and blow molding, and the lack of rapid early warning and detection methods for scaling and blockage in the water channels, this invention provides an intelligent management device and method for the cooling water circuits at the end of a molding production line. This invention relates to an intelligent monitoring, maintenance, and blockage management device for the cooling water circuits at the end of a molding production line. It involves water pressure sensing, flow sensing, multi-valve group collaborative control, and precision filtration technology. Through valve design and linkage control schemes, combined with sensor monitoring modules, it can automatically switch between three operating conditions: normal water flow, automatic filter cleaning, and mold cleaning. Simultaneously, it can identify operational anomalies and adaptively switch operating modes to ensure the continuous and stable operation of the cooling water circuit and guarantee the consistency of product quality in the molding production line.

[0016] Example 1: An intelligent cooling water system management device for the end of a molding production line, comprising a mold changing valve seat 1. Six cylinder valve bodies are mounted on one side of the mold changing valve seat 1, and an accumulator 2 and a filter 3 are disposed on the other side. The six cylinder valve bodies are arranged in a matrix on the mold changing valve seat 1, i.e., the six cylinder valve bodies are arranged in a 2×3 rectangular layout. The first control valve 4 is located at the bottom center, with the second control valve 5 and the third control valve 6 on either side. Above the first control valve 4 is the fifth control valve 8, above the second control valve 5 is the sixth control valve 9, and above the third control valve 6 is the fourth control valve 7. The mold changing valve seat 1 also includes... The flow and temperature sensor 103 (including a flow sensor and a temperature sensor) is used to monitor the cooling water parameters, as well as the first pressure sensor 104 that cooperates with the filter 3 and the second pressure sensor 105 that cooperates with the cooling water outlet 121; In this example, the accumulator 2 is a compressed gas accumulator, which provides a stable gas source for each cleaning and purging mode. The figure shows the air pipes that cooperate with each cylinder valve body and the air port that cooperates with the accumulator 2 for charging. This is the standard configuration for implementing this case. At the same time, the sealing means for each cylinder valve body and other positions are what those skilled in the art can think of when implementing it, and will not be elaborated here.

[0017] The mold changing valve seat 1 is provided with first to sixth mold changing cavities 16 corresponding to each control valve. Each mold changing cavity is provided with an isolation ring 17 in the middle. When the piston end of the control valve extends to the corresponding isolation ring 17, the mold changing cavity is divided into a front mold cavity 101 and a rear mold cavity 102. When the piston end of each control valve extends to the corresponding isolation ring 17, the corresponding mold changing cavity can be divided into a front mold cavity 101 and a rear mold cavity 102. The front mold cavity 101 is close to the cylinder valve body, and the rear mold cavity 102 is far away from the cylinder valve body.

[0018] Furthermore, the mold changing valve seat 1 is also provided with a mold changing passage that cooperates with each mold changing cavity. The mold changing passage is that the rear mold cavity 102 of the sixth mold changing cavity 16 is connected to the rear mold cavity 102 of the second mold changing cavity 12, the front mold cavity 101 of the fifth mold changing cavity 15 is connected to the front mold cavity 101 of the sixth mold changing cavity 16, the rear mold cavity 102 of the fourth mold changing cavity 14 is connected to the rear mold cavity 102 of the fifth mold changing cavity 15, the rear mold cavity 102 of the first mold changing cavity 11 is connected to the rear mold cavity 102 of the third mold changing cavity 13, and the front mold cavity 101 of the third mold changing cavity 13 is connected to the front mold cavity 101 of the fourth mold changing cavity 14. Next, the front mold cavity 101 of the first mold changing cavity 11 is connected to the cooling water inlet 111, the front mold cavity 101 of the second mold changing cavity 12 is connected to the cooling water outlet 121, the front mold cavity 101 of the third mold changing cavity 13 is connected to the sewage outlet 131, the rear mold cavity 102 of the fourth mold changing cavity 14 is connected to the mold cooling water inlet 141, the rear mold cavity 102 of the fifth mold changing cavity 15 is connected to the filter return water inlet 151, the front mold cavity 101 of the sixth mold changing cavity 16 is connected to the accumulator 2, the rear mold cavity 102 of the first mold changing cavity 11 is connected to the filter water inlet 112, and the rear mold cavity 102 of the second mold changing cavity 12 is connected to the mold cooling water outlet 142. It also includes a controller to selectively open or close various control valves, allowing switching between normal production mode, filter cleaning mode, or pipeline sewage cleaning mode; specifically: (1) In normal production mode, the third control valve 6, the fourth control valve 7, the fifth control valve 8 and the sixth control valve 9 are closed (that is, the piston end of the control valve extends to the corresponding isolation ring, and the corresponding mold cavity of the control valve is divided into the front mold cavity 101 and the rear mold cavity 102, the same below), the first control valve 4 and the second control valve 5 are open (that is, the piston end of the control valve does not extend to the corresponding isolation ring, and the corresponding mold cavity of the control valve is open, the same below), and the cooling water enters the mold from the cooling water inlet 111 through the first mold changing cavity 11, the filter 3, the fifth mold changing cavity 15 and the fourth mold changing cavity 14, and then flows back to the cooling water outlet 121 through the second mold changing cavity 12; that is, the cooling water flows forward through the filter 3 and the mold in sequence, and finally flows back to the cooling water pipeline; Specifically, after the cooling water enters the front mold cavity 101 of the first mold changing cavity 11 through the cooling water inlet 111, the first control valve 4 opens, allowing the cooling water to enter the rear mold cavity 102 of the first mold changing cavity 11. When the third control valve 6 is closed, the cooling water can only enter the filter 3 through the filter inlet 112, and then enter the rear mold cavity 102 of the fifth mold changing cavity 15 through the filter return inlet 151. At this time, since the fourth control valve 7 and the fifth control valve 8 are closed, the cooling water can only flow into the rear mold cavity 102 of the fourth mold changing cavity 14, and then enter the mold through the mold cooling inlet 141 to cool the mold. Then, it enters the rear mold cavity 102 of the second mold changing cavity 12 through the mold cooling outlet 142. When the sixth control valve 9 is closed, the cooling water can only flow into the front mold cavity 101 of the second mold changing cavity 14, and then flow out through the cooling water outlet 121 connected to the front mold cavity 101 of the second mold changing cavity 12, returning to the cooling water pipeline.

[0019] (2) In the filtration and cleaning mode, the first control valve 4, the second control valve 5, the fourth control valve 7 and the sixth control valve 9 are closed, and the third control valve 6 and the fifth control valve 8 are open. The compressed air provided by the accumulator 2 enters the filter return water port 151 through the sixth mold changing chamber 16 and the fifth mold changing chamber 15. After backwashing the filter 3, the sewage is discharged through the filter inlet 112, the rear mold chamber 102 of the first mold changing chamber 11 and the rear mold chamber 102 of the third mold changing chamber 13 to the sewage outlet 131. That is, the compressed air backwashes the filter 3, and the dirt is discharged through the sewage outlet 131 into the sewage pipeline. Specifically, after the compressed air in the accumulator 2 is introduced into the front mold cavity 101 of the sixth mold changing cavity 16, the compressed air can only flow into the front mold cavity 101 of the fifth mold changing cavity 15 because the sixth control valve 9 is closed. At this time, the fifth control valve 8 is opened, and the compressed air can smoothly flow into the rear mold cavity 102 of the fifth mold changing cavity 15. Then, because the second control valve 5 and the fourth control valve 7 are closed, the compressed air can only enter the filter 3 from the rear mold cavity 102 of the fifth mold changing cavity 15 through the filter return port 151. In this way, the compressed air can backwash the filter 3. The flushed wastewater flows into the rear mold cavity 102 of the first mold changing cavity 11 through the filter inlet 112. Because the first control valve 4 is closed, the flushed wastewater can only flow into the rear mold cavity 102 of the third mold changing cavity 13. At this time, because the third control valve 6 is opened, the flushed wastewater can be discharged from the wastewater outlet 131. Then it enters the wastewater treatment pipeline.

[0020] (3) The pipeline sewage cleaning mode includes the following two working conditions. 3.1) In the forward purging mode of pipeline sewage cleaning, the first control valve 4, the third control valve 6, the fourth control valve 7 and the sixth control valve 9 are closed, and the second control valve 5 and the fifth control valve 8 are open. Compressed air enters the mold sequentially through the sixth mold changing chamber 16, the fifth mold changing chamber 15 and the fourth mold changing chamber 14, and then exits through the second mold changing chamber 12 and the cooling water outlet 121. That is, the compressed air pushes the water accumulated in the pipeline, through the mold, and back to the cooling water pipeline. Specifically, after the compressed air in the accumulator 2 is introduced into the front mold cavity 101 of the sixth mold changing cavity 16, the compressed air can only flow into the front mold cavity 101 of the fifth mold changing cavity 15 because the sixth control valve 9 is closed. At this time, the fifth control valve 8 is opened, and the compressed air can flow smoothly into the rear mold cavity 102 of the fifth mold changing cavity 15. Since the first control valve 4, the third control valve 6 and the fourth control valve 7 are closed, the compressed air can only flow into the rear mold cavity 102 of the fourth mold changing cavity 14. Then, it enters through the mold cooling water inlet 141 and then enters the rear mold cavity 102 of the second mold changing cavity 12 from the mold cooling water outlet 142. When the second control valve 5 is open, the cooling water can only flow into the front mold cavity 101 of the second mold changing cavity 12 and then flow out from the cooling water outlet 121 connected to the front mold cavity 101 of the second mold changing cavity 12.

[0021] 3.2) In the reverse purging mode of the pipeline sewage cleaning, the first control valve 4, the second control valve 5, the third control valve 6 and the fifth control valve 8 are closed, and the fourth control valve 7 and the sixth control valve 9 are open. Compressed air enters the mold cooling outlet 142 through the rear mold cavity 102 of the sixth mold changing cavity 16 and the second mold changing cavity 12, flows in reverse through the mold and is discharged from the mold inlet into the fourth mold changing cavity 14, and then through the third mold changing cavity 13 and discharged from the sewage outlet 131. That is, the compressed air purifies the pipeline in reverse, carrying scale, mud, algae and other impurities into the sewage pipeline.

[0022] Specifically, after the compressed air in the accumulator 2 is introduced into the front mold cavity of the sixth mold changing cavity 16, the compressed air can flow into the rear mold cavity 102 of the second mold changing cavity 12 through the rear mold cavity 102 of the sixth mold changing cavity 16 because the fifth control valve 8 is closed and the sixth control valve 9 is open. Then, because the second control valve 5 is closed, the compressed gas can only enter from the mold cooling outlet 142 and be discharged into the rear mold cavity 102 of the fourth mold changing cavity 14 through the mold cooling inlet 141. This achieves the effect of reverse blowing of the compressed air into the pipeline. At this time, because the fourth control valve 7 is open and the third control valve 6 is closed, the impurities are further discharged into the front mold cavity 101 of the fourth mold changing cavity 14. Then, the compressed air and the impurities can enter the front mold cavity 101 of the third mold changing cavity 13 and finally be discharged into the sewage pipeline through the sewage outlet 131.

[0023] Example 2: A method for intelligent management of cooling water channels at the end of a molding production line, utilizing the intelligent management device for cooling water channels at the end of a molding production line as described in Example 1, includes the following steps: S00: During normal production, close the third, fourth, fifth, and sixth control valves 9, and open the first and second control valves 5 to allow the cooling water to flow forward through the filter 3 and into the mold, and then flow back to the cooling water pipeline. S10: When the pressure difference or running time of filter 3 reaches the set threshold, close the first, second, fourth and sixth control valves 9, open the third and fifth control valves 8, use the compressed air of accumulator 2 to backwash filter 3, and discharge the dirt into the sewage pipeline. S20: When it is necessary to clean the mold and pipeline, first switch to the filter cleaning mode, close the first, third, fourth and sixth control valves 9, and open the second and fifth control valves 8 to allow compressed air to push the water in the pipeline in the forward direction and return it to the cooling water pipeline through the mold; then switch to the pipeline sewage cleaning mode, switch to close the first, second, third and fifth control valves 8, and open the fourth and sixth control valves 9 to allow compressed air to blow the pipeline in the reverse direction and carry impurities into the sewage pipeline.

[0024] The switching between modes is based on real-time detection data from flow sensors, temperature sensors, and pressure sensors. The controller automatically determines and executes the switching, and issues an alarm or automatically switches to a safe mode in case of an abnormality.

[0025] Both the filter cleaning mode and the pipeline sewage cleaning mode use the same accumulator 2 as the air source, and the direction of compressed air flow is switched in the forward or reverse direction by the combination of the switching of each control valve.

[0026] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. An intelligent management device for cooling water circuits at the end of a molding production line, characterized in that, Includes a mold changing valve seat (1), on one side of which six cylinder valve bodies are installed, and on the other side are an accumulator (2) and a filter (3). The six cylinder valve bodies are arranged in a matrix on the mold changing valve seat (1), with the first control valve (4) located at the bottom center, and the second control valve (5) and the third control valve (6) on either side of it. Above the first control valve (4) is the fifth control valve (8), above the second control valve (5) is the sixth control valve (9), and above the third control valve (6) is the fourth control valve (7). The mold changing valve seat (1) is provided with first to sixth mold changing cavities (16) corresponding to each control valve. Each mold changing cavity is provided with an isolation ring (17) in the middle. When the piston end of each control valve extends to the corresponding isolation ring (17), the mold changing cavity is divided into a front mold cavity (101) and a rear mold cavity (102). The mold changing valve seat (1) is also provided with a mold changing passage that cooperates with each mold changing cavity. The front mold cavity (101) of the first mold changing cavity (11) is connected to the cooling water inlet (111), the front mold cavity (101) of the second mold changing cavity (12) is connected to the cooling water outlet (121), the front mold cavity (101) of the third mold changing cavity (13) is connected to the sewage outlet (131), the rear mold cavity (102) of the fourth mold changing cavity (14) is connected to the mold cooling water inlet (141), the rear mold cavity (102) of the fifth mold changing cavity (15) is connected to the filter return water inlet (151), the front mold cavity (101) of the sixth mold changing cavity (16) is connected to the accumulator (2), the rear mold cavity (102) of the first mold changing cavity (11) is connected to the filter water inlet (112), and the rear mold cavity (102) of the second mold changing cavity (12) is connected to the mold cooling water outlet (142). It also includes a controller to selectively open or close each control valve, and can switch to normal production mode, filter cleaning mode or pipeline sewage cleaning mode.

2. The intelligent management device for the cooling water circuit at the end of a molding production line according to claim 1, characterized in that: The mold changing passage is such that the rear mold cavity (102) of the sixth mold changing cavity (16) is connected to the rear mold cavity (102) of the second mold changing cavity (12), the front mold cavity (101) of the fifth mold changing cavity (15) is connected to the front mold cavity (101) of the sixth mold changing cavity (16), the rear mold cavity (102) of the fourth mold changing cavity (14) is connected to the rear mold cavity (102) of the fifth mold changing cavity (15), the rear mold cavity (102) of the first mold changing cavity (11) is connected to the rear mold cavity (102) of the third mold changing cavity (13), and the front mold cavity (101) of the third mold changing cavity (13) is connected to the front mold cavity (101) of the fourth mold changing cavity (14).

3. The intelligent management device for the cooling water circuit at the end of a molding production line according to claim 1, characterized in that: The mold changing valve seat (1) is also provided with a flow and temperature sensor (103) for monitoring cooling water parameters, a first pressure sensor (104) that cooperates with the filter (3), and a second pressure sensor (105) that cooperates with the cooling water outlet (121).

4. The intelligent management device for the cooling water circuit at the end of a molding production line according to claim 2, characterized in that, In the normal production mode, the third control valve (6), the fourth control valve (7), the fifth control valve (8) and the sixth control valve (9) are closed, the first control valve (4) and the second control valve (5) are opened, and the cooling water enters the mold from the cooling water inlet (111) in sequence through the first mold changing cavity (11), the filter (3), the fifth mold changing cavity (15) and the fourth mold changing cavity (14), and then flows back to the cooling water outlet (121) through the second mold changing cavity (12).

5. The intelligent management device for the cooling water circuit at the end of a molding production line according to claim 2, characterized in that, In the filtration and cleaning mode, the first control valve (4), the second control valve (5), the fourth control valve (7), and the sixth control valve (9) are closed, and the third control valve (6) and the fifth control valve (8) are opened. The compressed air provided by the accumulator (2) enters the filter return port (151) through the sixth mold changing chamber (16) and the fifth mold changing chamber (15). After backwashing the filter (3), the sewage is discharged through the filter inlet (112), the rear mold chamber (102) of the first mold changing chamber (11), and the rear mold chamber (102) of the third mold changing chamber (13) to the sewage outlet (131).

6. The intelligent management device for the cooling water circuit at the end of a molding production line according to claim 2, characterized in that, When the pipeline sewage cleaning mode is in the forward purging condition, the first control valve (4), the third control valve (6), the fourth control valve (7) and the sixth control valve (9) are closed, and the second control valve (5) and the fifth control valve (8) are opened. Compressed air enters the mold sequentially through the sixth mold changing chamber (16), the fifth mold changing chamber (15) and the fourth mold changing chamber (14), and then exits through the cooling water outlet (121) through the second mold changing chamber (12).

7. The intelligent management device for the cooling water circuit at the end of a molding production line according to claim 6, characterized in that, When the pipeline sewage cleaning mode is reverse purging, the first control valve (4), the second control valve (5), the third control valve (6) and the fifth control valve (8) are closed, and the fourth control valve (7) and the sixth control valve (9) are opened. Compressed air enters the mold cooling outlet (142) through the rear mold cavity (102) of the sixth mold changing cavity (16) and the second mold changing cavity (12), flows in reverse through the mold and is discharged from the mold inlet into the fourth mold changing cavity (14), and then through the third mold changing cavity (13) and discharged from the sewage outlet (131).

8. A method for intelligent management of cooling water channels at the end of a molding production line, utilizing the intelligent management device for cooling water channels at the end of a molding production line as described in any one of claims 1 to 7, characterized in that, Includes the following steps: S00: During normal production, close the third, fourth, fifth and sixth control valves (9), open the first and second control valves (5), so that the cooling water flows in the forward direction through the filter (3) and enters the mold, and then flows back to the cooling water pipeline; S10: When the pressure difference or running time of the filter (3) reaches the set threshold, close the first, second, fourth and sixth control valves (9), open the third and fifth control valves (8), use the accumulator (2) to compress the air to backwash the filter (3), and discharge the dirt into the sewage pipeline; S20: When it is necessary to clean the mold and pipeline, firstly, perform the filter cleaning mode, close the first, third, fourth and sixth control valves (9), and open the second and fifth control valves (8) so that the compressed air pushes the pipeline water back to the cooling water pipeline through the mold; then, perform the pipeline sewage cleaning mode, switch to closing the first, second, third and fifth control valves (8), and opening the fourth and sixth control valves (9) so that the compressed air blows the pipeline in reverse and carries the impurities into the sewage pipeline.

9. The intelligent management method for the end cooling water circuit of a molding production line according to claim 8, characterized in that, The switching between modes is based on real-time detection data from flow sensors, temperature sensors, and pressure sensors. The controller automatically determines and executes the switching, and issues an alarm or automatically switches to a safe mode in case of an abnormality.

10. The intelligent management method for the end cooling water circuit of a molding production line according to claim 8, characterized in that, Both the filtration cleaning mode and the pipeline sewage cleaning mode use the same accumulator (2) as the air source, and the direction of compressed air flow is switched in the forward or reverse direction by the combination of the switching of each control valve.

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