A blow-drying device for a water circuit system of an injection mold

Abstract

The application relates to a blow-drying device of a water channel system of an injection mold, which comprises a fan, a booster pump, an air inlet pipeline, an exhaust water pipeline and a controller; the air inlet side of the booster pump is connected with the fan, the air outlet side is connected with the inlet of the air inlet pipeline, the outlet of the air inlet pipeline is connected with the water channel system of the injection mold, the inlet of the exhaust water pipeline is connected with the water channel system of the injection mold, forming a passage of the air inlet pipeline-the water channel system of the injection mold-the exhaust water pipeline; the exhaust water pipeline is provided with a liquid flow sensor and a gas resistance sensor, and the controller is in communication connection with the fan, the booster pump, the liquid flow sensor and the gas resistance sensor. Compared with the prior art, the application has high automation degree and simple operation, and does not need to frequently confirm whether the pipeline in the water channel system has residual water.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology, and in particular to a drying device for an injection mold water system. Background Technology

[0002] The main component of injection molding, the mold, is used to shape plastic products. During the molding process, the plastic polymer material undergoes an extremely rapid transformation from liquid to solidification. To produce products that meet the required dimensions and appearance under these conditions, a stable circulating water system is necessary to provide even and rapid cooling, preventing deformation and shrinkage that could hinder production. Therefore, during the initial mold design and development phase, the water system is typically optimized to its fullest potential, employing numerous circulating cooling channels to achieve the best possible molding results.

[0003] As market demands for higher product quality, the water channels in molds used to produce these products become increasingly complex, ranging from large and small to narrow, winding, double-layered, and single-layered. When the mold is removed from the machine, all these oddly shaped, enclosed water channels must be thoroughly cleaned to prevent them from rusting and clogging due to prolonged exposure, which could lead to irreparable damage and render mold parts unusable. Even worse, after the mold-making machine is fully prepared, a blockage in the water system upon startup renders it unusable, requiring mold removal and complete cleaning and repair. This time-consuming process disrupts normal machine operation, hinders order fulfillment, and results in a significant waste of resources.

[0004] Currently, the water system is usually dried manually. When the mold is removed from the machine, air is blown out of the mold system pipes by air gun. Although this method is simple and convenient, the cleaning effect is not ideal. After the mold is disassembled, there is a lot of water left, and rust and blockage are common. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the prior art and provide a drying device for a water channel system of injection molds.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A drying device for a water system of an injection mold includes a blower, a booster pump, an air inlet pipe, an exhaust water pipe, and a controller;

[0008] The air intake side of the booster pump is connected to the fan, and the air outlet side is connected to the inlet of the air intake pipe. The outlet of the air intake pipe is connected to the water system of the injection mold, and the inlet of the exhaust water pipe is connected to the water system of the injection mold, forming a passage of air intake pipe - water system of injection mold - exhaust water pipe.

[0009] The exhaust water pipeline is equipped with a liquid flow sensor and a gas resistance sensor, and the controller is communicatively connected to the fan, the booster pump, the liquid flow sensor, and the gas resistance sensor.

[0010] Preferably, the outlet of the air intake pipe is provided with a gas splitter, which includes a main pipe and multiple branch pipes. The main pipe is connected to the outlet of the air intake pipe, the air intake end of the branch pipe is connected to the main pipe, and the air outlet end of the branch pipe is adapted to the water system of the injection mold. The number of exhaust water pipes is adapted to the number of branch pipes.

[0011] Preferably, the branch pipe is equipped with a switch valve.

[0012] Preferably, the switching valve is a solenoid valve and is communicatively connected to the controller.

[0013] Preferably, the number of branch pipes is 3.

[0014] Preferably, the outlet of the exhaust water pipe is connected to a water storage tank.

[0015] Preferably, the controller is equipped with a display screen.

[0016] Preferably, the controller is equipped with control buttons.

[0017] Preferably, a heater is provided between the fan and the booster pump for heating the gas, and the controller is communicatively connected to the heater.

[0018] Preferably, the outlet of the air intake pipe is connected to the near-ground side of the water system of the injection mold, and the inlet of the exhaust water pipe is connected to the far-ground side of the water system of the injection mold.

[0019] Preferably, it also includes a tilting frame, which is equipped with a drive device. The drive device is communicatively connected to a controller, and the injection mold mounted on the tilting frame rotates under the action of the drive device.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] (1) Gas with a certain pressure is sent into the pipeline of the water system of the injection mold by a blower and a booster pump to purge the residual water in the pipeline. The liquid flow of the exhaust water pipeline is obtained by a liquid flow sensor, and the resistance at the exhaust water pipeline is obtained by a gas resistance sensor. The device is controlled by a controller. The automation level is high, the operation is simple, and there is no need for frequent manual confirmation of whether there is residual water in the pipeline of the water system.

[0022] (2) A gas splitter is installed, which can purge multiple pipes in the water system at one time, improving purging efficiency, reducing time waste, and lowering labor costs.

[0023] (3) A heater is also installed between the fan and the booster pump, which can provide hot gas to blow the water out of the water system pipes, resulting in a better drying effect.

[0024] (4) A flipping frame was designed to allow the injection mold to be rotated at different angles before being blown, ensuring the reliability of the blowing and avoiding the situation where the water is not blown away. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the device structure of the present invention;

[0026] Figure 2 This is a schematic diagram of the control architecture of the present invention;

[0027] Reference numerals: 1. Fan, 2. Heater, 3. Booster pump, 4. Injection mold, 5. Tilting frame, 6. Water tank, 7. Controller, 8. Liquid flow sensor, 9. Gas resistance sensor, 10. Switch valve, 11. Drive device. Detailed Implementation

[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. These embodiments are based on the technical solution of the present invention and provide detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments.

[0029] In the accompanying drawings, components with the same structure are indicated by the same numerical designation, and components with similar structures or functions are indicated by similar numerical designations. The dimensions and thicknesses of each component shown in the drawings are arbitrary, and the present invention does not limit the dimensions and thicknesses of each component. To make the illustrations clearer, some components are appropriately exaggerated in the drawings.

[0030] Example 1:

[0031] A drying device for a water system of an injection mold, such as Figure 1 and Figure 2 As shown, the system includes a blower 1, a booster pump 3, an air intake pipe, an exhaust water pipe, and a controller 7. The air intake side of the booster pump 3 is connected to the blower 1, and the air outlet side is connected to the inlet of the air intake pipe. The outlet of the air intake pipe is connected to the water system of the injection mold 4, and the inlet of the exhaust water pipe is connected to the water system of the injection mold 4, forming a passage from the air intake pipe to the water system of the injection mold 4 and then to the exhaust water pipe. A liquid flow sensor 8 and a gas resistance sensor 9 are installed on the exhaust water pipe. The controller 7 is communicatively connected to the blower 1, the booster pump 3, the liquid flow sensor 8, and the gas resistance sensor 9. If necessary, flow guiding devices, baffles, and other structures can be added to ensure the water blowing effect.

[0032] The working principle of this application is as follows: Fan 1 operates, sending air into booster pump 3. Booster pump 3 operates, providing sufficient and stable air pressure, which is then introduced into the water system of injection mold 4. This forces water out of the water system pipes, and the gas and purged water are discharged through the exhaust water pipe. A liquid flow sensor 8 and a gas resistance sensor 9 are installed on the exhaust water pipe. The reading from liquid flow sensor 8 determines whether liquid is flowing through, thus indicating whether the water in the water system pipes has been purged. The reading from gas resistance sensor 9 detects the resistance in the exhaust water pipe. Combined with the size of the water system pipes, bends, etc., the extent of blockage and water residue can be determined.

[0033] The controller 7 is communicatively connected to the fan 1, booster pump 3, liquid flow sensor 8, and gas resistance sensor 9. The controller 7 is equipped with a display screen and control buttons. After the operator connects the air intake pipe and exhaust water pipe to the water system of the injection mold 4, they can start the fan 1 and booster pump 3 and adjust their power to change the air intake volume, air pressure, etc., using the control buttons on the controller 7. The display screen on the controller 7 can visually display the measurement data from the liquid flow sensor 8 and the gas resistance sensor 9, as well as the operating parameters of the fan 1 and booster pump 3.

[0034] The outlet of the air inlet pipe is equipped with a gas splitter, which includes a main pipe and multiple branch pipes. The main pipe connects to the outlet of the air inlet pipe, the inlet end of the branch pipe connects to the main pipe, and the outlet end of the branch pipe is adapted to the water system pipe of the injection mold 4. The number of exhaust water pipes matches the number of branch pipes. The outlet end of the branch pipe can be designed with a universal interface or a replaceable interface to adapt to the pipes of different injection molds 4. This can greatly improve work efficiency, eliminating the need for one-by-one blowing and allowing simultaneous blowing of multiple pipes in the water system of the injection mold 4, reducing wasted time and increasing efficiency. The number of branch pipes can be set as needed. In this embodiment, considering the power of the blower 1 and the booster pump 3, as well as the size and complexity of the water system pipes of the injection mold 4 in the factory, three branch pipes are set. A switch valve 10 is installed on each branch pipe. The number of exhaust water pipes is matched with the number of branch pipes. After the water system has finished purging (the liquid flow sensor 8 on the corresponding exhaust water pipe shows a flow rate of 0), the switch valve 10 on that branch pipe can be closed. Alternatively, when only one or two water system pipes need to be purged, the remaining branch pipes can be closed. The switch valve 10 is a solenoid valve and is connected to the controller 7. The operator can directly control the opening and closing of the switch valve 10 through the controller 7.

[0035] The outlet of the exhaust water pipe is connected to the water storage tank 6. Water blown out from the water system flows into the water storage tank 6 through the exhaust water pipe, and gas is discharged.

[0036] In addition, a heater 2 is installed between the blower 1 and the booster pump 3 to heat the gas. The controller 7 is communicatively connected to the heater 2, and the heater 2 can be controlled via control buttons on the controller 7. The operating parameters of the heater 2 are displayed visually on the screen. The heater 2 can heat the air, and the gas with a certain temperature and pressure enters the pipes of the water system, which can better blow water and dry the pipes.

[0037] To achieve better water blowing effect and prevent water residue in the pipes, in one embodiment, the outlet of the air inlet pipe can be connected to the near-ground side of the water system of the injection mold 4, and the inlet of the exhaust water pipe can be connected to the far-ground side of the water system of the injection mold 4. Water flows down naturally under the action of gravity, while gas enters the pipe from bottom to top to blow water, which can better avoid water residue.

[0038] In another embodiment, a tilting frame 5 can be further provided, on which the injection mold 4 can be installed by means of hoisting or other methods. Normally, the injection mold 4 is installed on the injection molding machine and cannot rotate. When the injection mold 4 is finished and needs to be stored or maintained, it can be installed on the tilting frame 5. The tilting frame 5 is equipped with a drive device 11, which is communicatively connected to the controller 7. The injection mold 4 installed on the tilting frame 5 rotates under the action of the drive device 11, thereby rotating and reversing the water system, which can more thoroughly remove water from the pipes. Moreover, if the injection mold 4 needs to be tilted and adjusted during the production process, it can also be adjusted through the tilting frame 5. Regarding the structure of the tilting frame 5, in this embodiment, two support rods are provided, and the injection mold 4 has connecting parts at both ends. Support seats are provided on the support rods, and the support seats are connected to the connecting parts, allowing the injection mold 4 to rotate relative to the support rods. The drive device 11 can be a motor or a gear chain transmission mechanism, as those skilled in the art will understand.

[0039] An alarm unit can also be added to the controller 7 to monitor the working status of the aforementioned fan 1, booster pump 3, liquid flow sensor 8, gas resistance sensor 9, heater 2, switching valve 10, drive device 11, etc. When an abnormality is detected, an audible and visual alarm will be issued to prompt the operator to handle it in time.

[0040] In existing technologies, manual one-on-one operation is required, using an air gun to blow water out of the pipes. This is easy to injure hands, inefficient, and the quality of the blowing is poor and unstable. Water often remains in the pipes, causing mold parts to rust and become unusable, resulting in economic losses.

[0041] The booster pump 3 provides stable gas pressure, shortening the time required to purge the pipeline. The gas pressure can be flexibly adjusted using data from the gas resistance sensor 9, and the water flow rate can be monitored by the liquid flow sensor 8 to determine if the pipeline is dry. During purging, the injection mold 4 can be rotated using the tilting frame 5 to ensure water is blown out from bends and corners. The controller 7's visual display and integrated buttons facilitate operation. With this invention, operators are no longer constantly tied to the pump, resulting in higher efficiency. Frequent checks for residual water in the injection mold 4's pipeline reduce the scrap rate of mold parts and the likelihood of corrosion. Furthermore, mold replacement during production is flexible and quick, improving production stability.

[0042] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A drying device for a water system of an injection mold, characterized in that, Includes a fan, booster pump, intake pipe, exhaust water pipe, and controller; The air intake side of the booster pump is connected to the fan, and the air outlet side is connected to the inlet of the air intake pipe. The outlet of the air intake pipe is connected to the water system of the injection mold, and the inlet of the exhaust water pipe is connected to the water system of the injection mold, forming a passage of air intake pipe - water system of injection mold - exhaust water pipe. The exhaust water pipeline is equipped with a liquid flow sensor and a gas resistance sensor, and the controller is communicatively connected to the fan, the booster pump, the liquid flow sensor, and the gas resistance sensor. The outlet of the air intake pipe is connected to the near-ground side of the water system of the injection mold, and the inlet of the exhaust water pipe is connected to the far-ground side of the water system of the injection mold.

2. The drying device for a water system of an injection mold according to claim 1, characterized in that, The outlet of the air intake pipe is equipped with a gas splitter, which includes a main pipe and multiple branch pipes. The main pipe is connected to the outlet of the air intake pipe, the air inlet end of the branch pipe is connected to the main pipe, and the air outlet end of the branch pipe is adapted to the water system of the injection mold. The number of exhaust water pipes is adapted to the number of branch pipes.

3. The drying device for a water system of an injection mold according to claim 2, characterized in that, The branch pipe is equipped with a switch valve.

4. The drying device for a water system of an injection mold according to claim 2, characterized in that, The number of branch pipes is 3.

5. The drying device for a water system of an injection mold according to claim 1, characterized in that, The outlet of the exhaust water pipe is connected to a water storage tank.

6. The drying device for a water channel system of an injection mold according to claim 1, characterized in that, The controller is equipped with a display screen.

7. The drying device for a water system of an injection mold according to claim 1, characterized in that, The controller is equipped with control buttons.

8. The drying device for a water system of an injection mold according to claim 1, characterized in that, A heater is also provided between the fan and the booster pump for heating the gas, and the controller is communicatively connected to the heater.

9. A drying device for a water system of an injection mold according to claim 1, characterized in that, It also includes a tilting frame, which is equipped with a drive device. The drive device is communicatively connected to a controller, and the injection mold mounted on the tilting frame rotates under the action of the drive device.

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