A circulating water cooling device and method for injection mold

Abstract

The invention discloses a circulating water cooling device for an injection mold, comprising a mold. A water storage tank and a cooling water tank are arranged on one side of the mold. A water outlet arranged on one side of the water storage tank is connected with a water inlet opening of a water supply pump through a pipeline. The water outlet opening of the water supply pump is connected with an opening on one side of a main water inlet pipe through a water supply pipe. A plurality of openings are arranged on the other side of the main water inlet pipe. A branch water inlet pipe is connected in each opening. Each branch water inlet pipe passes through one end of the mold and is connected with one end of a branch water outlet pipe. The other end of the branch water outlet pipe is connected with a plurality of openings arranged on the main water outlet pipe. An opening arranged on the other side of the main water outlet pipe is connected with one end of the water outlet pipe. The other end of the water outlet pipe is connected with a water inlet opening of a water pump. The water outlet opening of the water pump is connected with a water inlet on one side of the cooling water tank through a pipeline. After detecting the temperature of the mold, the water supply pump is controlled to start working, and cold water enters the branch water inlet pipe, so as to cool the mold.

Description

Technical Field

[0001] The invention relates to the technical field of mold cooling, in particular to a circulating water cooling device and method for an injection mold. Background Art

[0002] Injection molds are tools for producing plastic products and also tools that give plastic products complete structures and precise dimensions. Existing injection molds have uneven cooling, which causes deformation and damage to the injection molds, and injection molds that do not cool down completely bring inconvenience to processing. Summary of the invention

[0003] The object of the present invention is to provide a circulating water cooling device and method for injection molds to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a circulating water cooling device for an injection mold, comprising a mold, a water storage tank and a cooling water tank are arranged on one side of the mold, a water outlet arranged on one side of the water storage tank is connected to the water inlet opening of a water supply pump through a pipeline, the water outlet opening of the water supply pump is connected to the opening on one side of a main water inlet pipe through a water supply pipe, and a plurality of openings are arranged on the other side of the main water inlet pipe, and a branch water inlet pipe is connected to each opening, each branch water inlet pipe passes through one end of the mold and is connected to one end of a branch water outlet pipe, and the other end of the branch water outlet pipe is connected to a plurality of openings arranged on the main water outlet pipe, An opening arranged on the other side of the tube is connected to one end of a water outlet pipe, the other end of the water outlet pipe is connected to an opening of a water inlet end of a water pump, the water outlet end opening of the water pump is connected to a water inlet on one side of a cooling water tank through a pipeline, and a grid cover is arranged at the top opening of the cooling water tank, a cooling fan is arranged at the bottom of the grid cover, the water outlet arranged at the bottom of the cooling water tank is connected to an opening of a water inlet end of a recovery water pump through a pipeline, the water outlet end opening of the recovery water pump is connected to one end of a recovery water pipe, the other end of the recovery water pipe is connected to a water inlet arranged on one side of a water storage tank, a controller is arranged at the top of the water storage tank, and the controller is electrically connected to a power management system.

[0005] Preferably, a first temperature sensor is provided on the outside of the mold, and a plurality of through holes cooperating with the branch water inlet pipes are provided inside the mold, a third temperature sensor is provided on one of the branch water outlet pipes provided on one side of the mold, and both the first temperature sensor and the third temperature sensor are electrically connected to the controller.

[0006] Preferably, a water level sensor and a second temperature sensor are provided in the cooling water tank, and the water level sensor is provided at the bottom of the cooling fan, and the cooling fan, the water level sensor and the second temperature sensor are all electrically connected to the controller.

[0007] Preferably, flow control valves are provided on the water supply pipe, the water outlet pipe and the water recovery pipe, and the flow control valves, the water supply pump, the water pump and the water recovery pump are all electrically connected to the controller.

[0008] A circulating water cooling method for an injection mold comprises the following steps:

[0009] S1, the first temperature sensor starts working to detect the temperature of the mold, and the detected temperature value is transmitted to the controller. The controller controls the water pump to start working, and the cold water in the water storage tank is transported to the water delivery pipe through the pipeline, and then enters the main water inlet pipe. The cold water enters the branch water inlet pipe and enters the mold to achieve a cooling effect;

[0010] S2, the third temperature sensor on the branch water outlet pipe detects the temperature of the water in the water pipe. When it exceeds the set value, it transmits a signal to the controller. The controller controls the water pump to start working, and pumps out the water in the branch water inlet pipe through the branch water outlet pipe, the main water outlet pipe and the water outlet pipe, and delivers it to the cooling water tank. At the same time, the water delivery pump starts working, and delivers cold water into the branch water inlet pipe to cool the mold until the temperature value detected by the first temperature sensor is less than the set value;

[0011] S3, the water in the cooling water tank is cooled by turning on the cooling fan, and when the water level in the water tank exceeds the set value of the water level sensor, a signal is sent to the controller to control the water pump to stop working. The second temperature sensor detects the water temperature in the cooling water tank. When it is lower than the set value, a signal is sent to the controller to control the recovery water pump to start working;

[0012] S4. The recovery water pump draws water out of the cooling water tank through the pipeline and the recovery water pipe and transports it to the water storage tank to provide water source for cooling the mold.

[0013] Preferably, the third temperature sensor on the branch water outlet pipe detects the water temperature, and the temperature value detected by the third temperature sensor is compared with the limit value. If the temperature value detected by the third temperature sensor exceeds the limit value, the flow control valve on the corresponding water supply pipe and the water pipe is automatically adjusted to increase the opening of the flow control valve, thereby increasing the cooling water flow of the corresponding branch water inlet pipe and the branch water outlet pipe; if the temperature value detected by the third temperature sensor is lower than the temperature limit value, the flow control valve on the corresponding water supply pipe and the water pipe is automatically adjusted to reduce the opening of the flow control valve to reduce the cooling water flow of the corresponding branch water inlet pipe and the branch water outlet pipe.

[0014] Preferably, a water level sensor detects the water level in the cooling water tank, and compares the water level value detected by the water level sensor with a limit value. If the temperature value detected by the water level value detected by the water level sensor exceeds the limit value, the water pump is controlled to stop working. If the water level value detected by the water level sensor is lower than the limit value, the water pump is controlled to continue working to transport water into the cooling water tank until the limit value of the water level sensor is reached.

[0015] Compared with the prior art, the beneficial effects of the present invention are: after detecting the temperature of the mold, the water supply pump is controlled to start working, and cold water enters the branch water inlet pipe to cool the mold, and then is transported to the branch water outlet pipe for discharge into the cooling water tank, which is convenient for continuously supplying cold water to the branch water inlet pipe, thereby improving the cooling effect on the mold and achieving uniform cooling; the water in the cold water tank is transported to the water storage tank after being cooled, thereby saving water resources: ensuring the recycling of water resources in the cooling system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 A top view of the mold of the present invention;

[0018] Figure 3 It is a connection block diagram of the present invention.

[0019] In the figure: 1. mold; 2. water storage tank; 3. cooling water tank; 4. first temperature sensor; 5. branch water inlet pipe; 6. main water inlet pipe; 7. water supply pump; 8. water supply pipe; 9. branch water outlet pipe; 10. main water outlet pipe; 11. water outlet pipe; 12. water pump; 13. controller; 14. cooling fan; 15. grid cover; 16. water level sensor; 17. second temperature sensor; 18. recovery water pump; 19. recovery water pipe; 20. third temperature sensor; 21. flow control valve. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] See also Figure 1-3 The present invention provides a technical solution: a circulating water cooling device for an injection mold, comprising a mold 1, a water storage tank 2 and a cooling water tank 3 are arranged on one side of the mold 1, a water outlet arranged on one side of the water storage tank 2 is connected to a water inlet opening of a water pump 7 through a pipeline, the water outlet opening of the water pump 7 is connected to an opening on one side of a main water inlet pipe 6 through a water supply pipe 8, and a plurality of openings are arranged on the other side of the main water inlet pipe 6, and a branch water inlet pipe 5 is connected to each opening, each branch water inlet pipe 5 passes through one end of the mold 1 and is connected to one end of a branch water outlet pipe 9, the other end of the branch water outlet pipe 9 is connected to a plurality of openings arranged on the main water outlet pipe 10, and an opening arranged on the other side of the main water outlet pipe 10 It is connected to one end of a water outlet pipe 11, the other end of the water outlet pipe 11 is connected to the water inlet opening of a water pump 12, the water outlet opening of the water pump 12 is connected to the water inlet on one side of the cooling water tank 3 through a pipeline, and a grid cover 15 is provided at the top opening of the cooling water tank 3, a cooling fan 14 is provided at the bottom of the grid cover 15, the water outlet provided at the bottom of the cooling water tank 3 is connected to the water inlet opening of a recovery water pump 18 through a pipeline, the water outlet opening of the recovery water pump 18 is connected to one end of a recovery water pipe 19, the other end of the recovery water pipe 19 is connected to the water inlet provided on one side of the water storage tank 2, and a controller 13 is provided on the top of the water storage tank 2, and the controller 13 is electrically connected to a power management system.

[0024] A first temperature sensor 4 is arranged on the outside of the mold 1, and a plurality of through holes cooperating with the branch water inlet pipe 5 are arranged inside the mold 1. A third temperature sensor 20 is arranged on one of the branch water outlet pipes 9 arranged on one side of the mold 1, and the first temperature sensor 4 and the third temperature sensor 20 are both electrically connected to the controller 13.

[0025] A water level sensor 16 and a second temperature sensor 17 are disposed in the cooling water tank 3 , and the water level sensor 16 is disposed at the bottom of the cooling fan 14 . The cooling fan 14 , the water level sensor 16 and the second temperature sensor 17 are all electrically connected to the controller 13 .

[0026] The water supply pipe 8 , the water outlet pipe 11 and the water recovery pipe 19 are all provided with flow control valves 21 , and the flow control valves 21 , the water supply pump 7 , the water pump 12 and the water recovery pump 18 are all electrically connected to the controller 13 .

[0027] A circulating water cooling method for an injection mold comprises the following steps:

[0028] S1, the first temperature sensor 4 starts to work, detects the temperature of the mold 1, and the detected temperature value is transmitted to the controller 13. The controller 13 controls the water pump 7 to start working, and the cold water in the water storage tank 2 is transported to the water delivery pipe 8 through the pipeline, and then enters the main water inlet pipe 6. The cold water enters the branch water inlet pipe 5 and enters the mold 1 to achieve a cooling effect;

[0029] S2, the third temperature sensor 20 on the branch water outlet pipe 9 detects the temperature of the water in the water pipe. When it exceeds the set value, the signal is transmitted to the controller 13. The controller 13 controls the water pump 12 to start working, and the water in the branch water inlet pipe 5 is pumped out through the branch water outlet pipe 9, the main water outlet pipe 10 and the water outlet pipe 11, and is transported to the cooling water tank 3. At the same time, the water delivery pump 7 starts working to deliver cold water into the branch water inlet pipe 5 to cool the mold 1 until the temperature value detected by the first temperature sensor 4 is less than the set value;

[0030] S3, the water in the cooling water tank 3 is cooled by turning on the cooling fan 14, and when the water level in the water tank exceeds the set value of the water level sensor 16, a signal is sent to the controller 13 to control the water pump 12 to stop working, and the second temperature sensor 17 detects the water temperature in the cooling water tank 3. When it is lower than the set value, a signal is sent to the controller 13 to control the recovery water pump 18 to start working;

[0031] S4, the recovery water pump 18 pumps the water in the cooling water tank 3 through the pipeline and the recovery water pipe 19, and transports it to the water storage tank 2 to provide a water source for cooling the mold 1.

[0032] The third temperature sensor 20 on the branch water outlet pipe 9 detects the water temperature, and compares the temperature value detected by the third temperature sensor 20 with the limit value. If the temperature value detected by the third temperature sensor 20 exceeds the limit value, the flow control valve 21 on the corresponding water supply pipe 8 and the water pipe 11 is automatically adjusted to increase the opening of the flow control valve 21, thereby increasing the cooling water flow of the corresponding branch water inlet pipe 5 and the branch water outlet pipe 9; if the temperature value detected by the third temperature sensor 20 is less than the temperature limit value, the flow control valve 21 on the corresponding water supply pipe 8 and the water pipe 11 is automatically adjusted to reduce the opening of the flow control valve 21, thereby reducing the cooling water flow of the corresponding branch water inlet pipe 5 and the branch water outlet pipe 9.

[0033] The water level sensor 16 detects the water level in the cooling water tank 3, and compares the water level value detected by the water level sensor 16 with the limit value. If the temperature value detected by the water level value detected by the water level sensor 16 exceeds the limit value, the water pump 12 is controlled to stop working. If the water level value detected by the water level sensor 16 is lower than the limit value, the water pump 12 is controlled to continue working to transport water into the cooling water tank 3 until the limit value of the water level sensor 16 is reached.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circulating water cooling method for injection molds, characterized in that: The invention comprises a circulating water cooling device, wherein the circulating water cooling device comprises a mold (1), a water storage tank (2) and a cooling water tank (3) are arranged on one side of the mold (1), a water outlet arranged on one side of the water storage tank (2) is connected to a water inlet opening of a water supply pump (7) through a pipeline, the water outlet opening of the water supply pump (7) is connected to an opening on one side of a main water inlet pipe (6) through a water supply pipe (8), a plurality of openings are arranged on the other side of the main water inlet pipe (6), and a branch water inlet pipe (5) is connected to each opening, each branch water inlet pipe (5) passes through one end of the mold (1) and is connected to one end of a branch water outlet pipe (9), the other end of the branch water outlet pipe (9) is connected to a plurality of openings arranged on the main water outlet pipe (10), the openings arranged on the other side of the main water outlet pipe (10) and the water outlet pipe (9) are connected to each other. (11), the other end of the water outlet pipe (11) is connected to the water inlet opening of the water pump (12), the water outlet opening of the water pump (12) is connected to the water inlet on one side of the cooling water tank (3) through a pipeline, and the top opening of the cooling water tank (3) is provided with a grid cover plate (15), the bottom of the grid cover plate (15) is provided with a cooling fan (14), the water outlet provided at the bottom of the cooling water tank (3) is connected to the water inlet opening of the recovery water pump (18) through a pipeline, the water outlet opening of the recovery water pump (18) is connected to one end of the recovery water pipe (19), the other end of the recovery water pipe (19) is connected to the water inlet provided on one side of the water storage tank (2), a controller (13) is provided on the top of the water storage tank (2), and the controller (13) is electrically connected to a power management system; A first temperature sensor (4) is arranged on the outside of the mold (1), and a plurality of through holes cooperating with the branch water inlet pipe (5) are arranged inside the mold (1). A third temperature sensor (20) is arranged on one of the branch water outlet pipes (9) arranged on one side of the mold (1), and both the first temperature sensor (4) and the third temperature sensor (20) are electrically connected to the controller (13); A water level sensor (16) and a second temperature sensor (17) are arranged in the cooling water tank (3), and the water level sensor (16) is arranged at the bottom of the cooling fan (14), and the cooling fan (14), the water level sensor (16) and the second temperature sensor (17) are all electrically connected to the controller (13); The water supply pipe (8), the water outlet pipe (11) and the water recovery pipe (19) are all provided with flow control valves (21), and the flow control valves (21), the water supply pump (7), the water pump (12) and the water recovery pump (18) are all electrically connected to the controller (13); The circulating water cooling method comprises the following steps: S1, the first temperature sensor (4) starts to work, detects the temperature of the mold (1), and transmits the detected temperature value to the controller (13). The controller (13) controls the water pump (7) to start working, and transmits the cold water in the water storage tank (2) to the water pipe (8) through the pipeline, and then enters the main water inlet pipe (6). The cold water enters the branch water inlet pipe (5) and enters the mold (1), thereby achieving a cooling effect; S2, the third temperature sensor (20) on the branch water outlet pipe (9) detects the temperature of the water in the water pipe. When the temperature exceeds the set value, the signal is transmitted to the controller (13). The controller (13) controls the water pump (12) to start working, and pumps out the water in the branch water inlet pipe (5) through the branch water outlet pipe (9), the main water outlet pipe (10) and the water outlet pipe (11), and delivers the water to the cooling water tank (3). At the same time, the water delivery pump (7) starts working, and delivers cold water into the branch water inlet pipe (5) to cool the mold (1) until the temperature value detected by the first temperature sensor (4) is less than the set value; S3, the water in the cooling water tank (3) is cooled by turning on the cooling fan (14), and when the water level in the water tank exceeds the set value of the water level sensor (16), a signal is sent to the controller (13) to control the water pump (12) to stop working, and the second temperature sensor (17) detects the water temperature in the cooling water tank (3), and when it is lower than the set value, a signal is sent to the controller (13) to control the recovery water pump (18) to start working; S4, the recovery water pump (18) extracts the water in the cooling water tank (3) through the pipeline and the recovery water pipe (19), and transports it to the water storage tank (2), thereby providing a water source for cooling the mold (1).

2. A circulating water cooling method for injection molds according to claim 1, characterized in that: The third temperature sensor (20) on the branch water outlet pipe (9) detects the water temperature, and compares the temperature value detected by the third temperature sensor (20) with a limit value. If the temperature value detected by the third temperature sensor (20) exceeds the limit value, the flow control valve (21) on the corresponding water supply pipe (8) and the water pipe (11) is automatically adjusted to increase the opening of the flow control valve (21) and increase the cooling water flow of the corresponding branch water inlet pipe (5) and the branch water outlet pipe (9); if the temperature value detected by the third temperature sensor (20) is less than the temperature limit value, the flow control valve (21) on the corresponding water supply pipe (8) and the water pipe (11) is automatically adjusted to reduce the opening of the flow control valve (21) and reduce the cooling water flow of the corresponding branch water inlet pipe (5) and the branch water outlet pipe (9).

3. A circulating water cooling method for injection molds according to claim 1, characterized in that: The water level sensor (16) detects the water level in the cooling water tank (3), and compares the water level value detected by the water level sensor (16) with a limit value. If the temperature value detected by the water level sensor (16) exceeds the limit value, the pump (12) is controlled to stop working. If the water level value detected by the water level sensor (16) is lower than the limit value, the pump (12) is controlled to continue working to transport water into the cooling water tank (3) until the limit value of the water level sensor (16) is reached.

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