Water supply system, grinder and control method of water supply system

Abstract

The application relates to the technical field of automation equipment, and discloses a water supply system, a grinder and a control method of the water supply system. The water supply system comprises a water supply assembly, a first electromagnetic valve and a water outlet pipe, a three-way connecting piece and a buffer hose, a second electromagnetic valve, wherein the water supply assembly comprises a water pump and a water supply pipe, the water pump can supply water into the water supply pipe; the first electromagnetic valve is used for opening and closing the water outlet pipe; the first end of the three-way connecting piece is communicated with the water supply pipe, the second end is communicated with the water outlet pipe, and the third end is communicated with the buffer hose; the second electromagnetic valve can close the buffer hose within a first preset time before the first electromagnetic valve is opened, and can open the buffer hose after a second preset time when the first electromagnetic valve is closed. The water supply system can effectively relieve or even eliminate water hammer vibration, reduce the failure rate of the pipeline and its accessories, and ensure that the water outlet pipe can stably spray water at a preset water pressure. The grinder adopts the above water supply system, reduces the failure rate of the water supply system itself and the grinder main body under the premise of ensuring the workpiece machining quality.

Description

Technical Field

[0001] This invention relates to the field of water supply equipment technology, and in particular to a water supply system and its control method, and a grinding machine. Background Technology

[0002] The edge grinding and polishing of new display materials, carrier glass and other products need to be completed by a grinding machine. The grinding machine includes a grinding machine body and a water supply system. When the grinding machine body is grinding and polishing the edges, the water supply system supplies a large amount of water to the grinding area for lubrication and cooling. Sufficient water pressure must be ensured to avoid problems such as edge burning of the product.

[0003] The water supply system includes a water supply pipe and a solenoid valve that controls the opening and closing of the water supply pipe. When the main body of the grinding machine is working, the product is first moved to the grinding station and fixed. Then the grinding mechanism starts grinding. At the same time, the solenoid valve opens and the water supply pipe sprays water onto the grinding area. After the grinding is completed, the solenoid valve closes to stop spraying water and the ground product is moved away.

[0004] The grinding machine grinds workpieces at a relatively fast pace, requiring frequent opening and closing of the solenoid valve on the water supply pipe. When the solenoid valve suddenly closes, the water in the supply pipe cannot drain but continues to move downwards due to inertia until it encounters the solenoid valve below, easily causing the water pipe to vibrate and produce a hammering sound, forming what is known as water hammer vibration. When water hammer vibration occurs, on the one hand, the water supply pipe and its accessories (such as the solenoid valve) are subjected to significant vibration, which can easily cause leaks and endanger the service life of the water supply system. On the other hand, since the water supply pipe is usually supported on the main body of the grinding equipment, the vibration and impact generated by water hammer vibration can also endanger the safety of the grinding equipment and the processing accuracy.

[0005] Therefore, there is an urgent need for a water supply system and grinding equipment to solve the above-mentioned technical problems. Summary of the Invention

[0006] One objective of this invention is to provide a water supply system that can effectively mitigate or even eliminate water hammer vibration, reduce the failure rate of pipelines and their accessories, and ensure that the outlet pipe can stably spray water at a preset water pressure.

[0007] The second objective of this invention is to provide a grinding machine that, by employing the aforementioned water supply system, reduces the failure rate of both the water supply system itself and the grinding machine body while ensuring the quality of workpiece processing.

[0008] The third objective of this invention is to propose a control method for a water supply system that can effectively mitigate or even eliminate water hammer vibration, reduce the failure rate of pipelines and their accessories, and ensure that the outlet pipe can stably spray water at a preset water pressure.

[0009] To achieve this objective, the present invention adopts the following technical solution:

[0010] Water supply system, including:

[0011] A water supply assembly includes a water pump and a water supply pipe, wherein the water pump is capable of supplying water into the water supply pipe;

[0012] The water outlet assembly includes a first solenoid valve and a water outlet pipe, wherein the first solenoid valve is used to open and close the water outlet pipe;

[0013] A three-way connector and a buffer hose, wherein the first end of the three-way connector is connected to the water supply pipe, the second end is connected to the water outlet pipe, and the third end is connected to the buffer hose.

[0014] The second solenoid valve is capable of closing the buffer hose within a first preset time before the first solenoid valve opens, and opening the buffer hose after a second preset time after the first solenoid valve closes.

[0015] As an alternative, the second solenoid valve is located at the end of the buffer hose away from the tee connector.

[0016] As an alternative, at least part of the buffer hose can be coiled up.

[0017] As an optional solution, the length of the buffer hose should be no less than six meters.

[0018] As an alternative, the buffer hose is a network cable conduit.

[0019] As an alternative, the water supply pipe is made of a rigid material.

[0020] As an alternative, the water supply system also includes a water tank, and the water pump can pump water from the tank into the water supply pipe, with the outlet of the buffer hose connected to the water tank.

[0021] As an alternative, the water supply system includes at least two outlet components, with the outlet pipes of at least two outlet components connected to the water supply pipe, and the outlet pipe of the outlet component away from the water pump connected to the tee connector.

[0022] The grinder includes the grinder body and the water supply system.

[0023] The water supply system control method, applied to the aforementioned water supply system, includes the following steps:

[0024] S1, start the water pump;

[0025] S2, send a first signal to the first solenoid valve to open the water outlet pipe, and send a second signal to the second solenoid valve within a first preset time before sending the first signal to close the buffer hose;

[0026] S3, send a third signal to the first solenoid valve to close the water outlet pipe, and send a fourth signal to the second solenoid valve within a second preset time after sending the third signal to open the buffer hose;

[0027] S4, repeat steps S2 and S3 several times;

[0028] S5, shut down the water pump and send a second signal to the second solenoid valve to close the buffer hose.

[0029] The beneficial effects of this invention are:

[0030] The water supply system of this invention, by setting up a three-way connector, a buffer hose, and a second solenoid valve, allows the first solenoid valve to be triggered to open the water outlet pipe when water spraying is needed. At this time, the buffer hose is in a closed state, thereby ensuring that the water outlet pipe sprays water with sufficient water pressure. When water spraying is not needed, the first solenoid valve is triggered to close the water outlet pipe, so that the water in the water supply pipe flows into the buffer hose. The buffer hose can release the impact caused by the inertia of the water through its own deformation, thereby effectively mitigating or even completely eliminating water hammer vibration and improving the service life of the water supply system components. In addition, since the second solenoid valve opens the buffer hose again after a second preset time, the water in the buffer hose can flow out, thereby playing a role in maintaining the pressure of the water in the water supply pipe, ensuring that the water outlet pipe can spray water with a preset water pressure when the first solenoid valve is opened next, thereby meeting the cooling requirements of the workpiece.

[0031] The grinding machine of the present invention, by setting the above-mentioned water supply system, can supply water with sufficient pressure to the workpiece to avoid the problem of burnt edges on the workpiece and ensure the stability of the process production; and during the opening and closing of the water outlet pipe, there will be no water hammer vibration, which not only improves the service life of the water supply system components, but also prevents the grinding machine body from vibrating or being impacted, ensuring the processing quality of the workpiece by the grinding machine body and reducing the failure rate of the grinding machine body.

[0032] The water supply system control method of the present invention can effectively alleviate or even completely eliminate water hammer vibration by controlling the water supply system to open and close the first solenoid valve and the second solenoid valve at appropriate times, thereby improving the service life of the water supply system components and ensuring that the outlet pipe can spray water with sufficient water pressure each time it is opened. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the water supply system provided in a specific embodiment of the present invention.

[0034] In the picture:

[0035] 10. Water supply assembly; 11. Water pump; 12. Water supply pipe; 20. Water outlet assembly; 21. First solenoid valve; 22. Water outlet pipe; 30. T-connector; 40. Buffer hose; 50. Second solenoid valve; 60. Water tank; 70. Water inlet pipe; 80. Conveying mechanism; 90. Grinding wheel; 100. Workpiece. Detailed Implementation

[0036] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention and not the entire structure.

[0037] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0040] This embodiment provides a water supply system, a grinding machine, and a control method for the water supply system. The grinding machine includes a grinding machine body and a water supply system. The grinding machine body is used to grind the edges of a workpiece 100. Figure 1As shown, the grinding machine body includes a conveying mechanism 80, an adsorption mechanism (not shown), and a grinding mechanism. The conveying mechanism 80 carries the workpiece 100 and transports it from the loading station to the grinding station. The adsorption mechanism is located at the grinding station and can adsorb and fix the workpiece 100 there. The grinding mechanism is located at the grinding station and is used to grind the edges of the workpiece 100. In this embodiment, the grinding mechanism includes two grinding wheels 90, which are respectively located on both sides of the conveying mechanism 80, thereby enabling simultaneous grinding of both edges of the workpiece 100.

[0041] The water supply system can spray water at a sufficiently high pressure onto the grinding wheel, thereby preventing the workpiece 100 from burning its edges. It is understood that the workpiece 100 is not limited to glass substrates, silicon wafers, etc.

[0042] like Figure 1 As shown, the water supply system includes a water tank 60, a water supply assembly 10, a water outlet assembly 20, a three-way connector 30, a buffer hose 40, a second solenoid valve 50, and a control assembly. The water tank 60 is used to store water. In this embodiment, the water tank 60 is also equipped with a water inlet pipe 70, allowing an external water source to connect to the water tank 60, facilitating water filling. The water supply assembly 10 includes a water pump 11 and a water supply pipe 12. One end of the water pump 11 is connected to the water tank 60, and the other end is connected to the water supply pipe 12. The water pump 11 is used to pump water from the water tank 60 into the water supply pipe 12. The water outlet assembly 20 includes a first solenoid valve 21 and a water outlet pipe 22. The first end of the three-way connector 30 is connected to the water supply pipe 12, the second end is connected to the water outlet pipe 22, and the third end is connected to the buffer hose 40. The water outlet of the water outlet pipe 22 is located at the grinding wheel 90. The first solenoid valve 21 is used to open and close the water outlet pipe 22, so that water can be sprayed onto the grinding area of ​​the workpiece 100. The second solenoid valve 50 can close or open the buffer hose 40, so that water is retained in the buffer hose 40 or discharged from the outlet of the buffer hose 40. The water pump 11, the first solenoid valve 21, and the second solenoid valve 50 are all electrically connected to the control component. The control component can control the operation of the water pump 11, the first solenoid valve 21, and the second solenoid valve 50 respectively. Specifically, the control component can control the second solenoid valve 50 to close the buffer hose 40 within a first preset time before the first solenoid valve 21 opens, and control the second solenoid valve 50 to open the buffer hose 40 after a second preset time after the first solenoid valve 21 closes.

[0043] In this embodiment, when water needs to be sprayed onto the grinding wheel 90, the control component activates the first solenoid valve 21 and opens the water outlet pipe 22. At this time, the buffer hose 40 is closed, thus ensuring that the water outlet pipe 22 sprays water with sufficient pressure. When water does not need to be sprayed onto the grinding wheel 90, the control component activates the first solenoid valve 21 to close the water outlet pipe 22. Therefore, the water in the water supply pipe 12 flows into the buffer hose 40. The buffer hose 40 can release the impact caused by the inertia of the water through its own deformation, thereby effectively mitigating or even completely eliminating water hammer vibration and improving the service life of the water supply system components. In addition, since the second solenoid valve 50 opens the buffer hose 40 again after a second preset time to allow water to flow out, it plays a role in maintaining the pressure of the water in the water supply pipe 12, ensuring that the water outlet pipe 22 can spray water with a preset water pressure when the first solenoid valve 21 opens next time, thereby meeting the cooling requirements of the workpiece 100. The grinding machine of the present invention, by setting the above-mentioned water supply system, can supply water with sufficient pressure to the workpiece 100 to avoid the problem of edge burning of the workpiece 100 and ensure the stability of the process production; and during the opening and closing of the water outlet pipe 22, there will be no water hammer vibration, which not only improves the service life of the components of the water supply system itself, but also prevents the grinding machine body from vibrating or being impacted, ensuring the processing quality of the workpiece 100 by the grinding machine body, and also reducing the failure rate of the grinding machine body.

[0044] Preferably, such as Figure 1 As shown, the outlet of the buffer hose 40 is connected to the water tank 60. After the first solenoid valve 21 is closed and the second solenoid valve 50 is opened, the water in the buffer hose 40 can flow back into the water tank 60, thereby avoiding water waste.

[0045] In this embodiment, the water supply pipe 12 is made of a rigid material, so it does not absorb the kinetic energy of the water flow, reducing the kinetic energy loss of the water flow and lowering energy consumption while ensuring sufficient water pressure from the outlet pipe 22. Optionally, the water supply pipe 12 can be made of rigid plastic or metal, without specific limitations. Optionally, the water supply pipe 12 can be fixed to the grinding machine body using clamps, screws, or other connecting structures.

[0046] Preferably, the buffer hose 40 is made of a material with good elasticity, so that after the first solenoid valve 21 is closed and before the second solenoid valve 50 is opened, it can fully absorb the impact of the water flow through its own deformation, thereby effectively mitigating water hammer vibration. Optionally, the buffer hose 40 can be a network cable conduit, which has good elastic deformation ability to fully absorb the impact of water, and is durable and not easily damaged.

[0047] Preferably, such as Figure 1As shown, the second solenoid valve 50 is located at the end of the buffer far from the three-way connector 30. After the first solenoid valve 21 is closed and before the second solenoid valve 50 is opened, the water flow enters the buffer hose 40 and has a sufficiently long distance to interact with the buffer hose 40, allowing the buffer hose 40 to fully absorb the impact force of the water, thereby better eliminating water hammer vibration.

[0048] Preferably, the length of the buffer hose 40 is not less than six meters. On the one hand, after the first solenoid valve 21 is closed and before the second solenoid valve 50 is opened, the buffer hose 40 can fully absorb the impact caused by the inertia of the water, so as to effectively alleviate water hammer vibration. On the other hand, after the first solenoid valve 21 is closed and the second solenoid valve 50 is opened, the sufficiently long buffer hose 40 generates greater resistance to the water flow, which helps to maintain a high water pressure in the water supply pipe 12. This allows the outlet pipe 22 to spray a water flow with sufficient pressure the moment the first solenoid valve 21 is opened again, thus avoiding the problem of edge burning in the product.

[0049] Preferably, such as Figure 1 As shown, at least a portion of the buffer hose 40 is coiled. This coiled buffer hose 40 further increases the resistance to water flow. After the first solenoid valve 21 is closed and the second solenoid valve 50 is opened, this resistance also helps maintain the pressure of the water in the water supply pipe 12, ensuring that the outlet pipe 22 can spray a water flow with sufficient pressure the moment the first solenoid valve 21 is opened again. In this embodiment, the buffer hose 40 is coiled at one end near the tee connector 30. In other embodiments, the coiled section of the buffer hose 40 can be located in the middle of the buffer hose 40, preferably between the second solenoid valve 50 and the tee connector 30.

[0050] like Figure 1 As shown, the water supply system in this embodiment includes two water outlet components 20. The water outlet pipes 22 of both water outlet components 20 are connected to the water supply pipe 12. The two water outlet pipes 22 are used to spray water onto the two grinding wheels 90 respectively, thereby cooling the two grinding positions of the workpiece 100. It should be noted that the water outlet pipe 22 of the water outlet component 20 furthest from the water pump 11 is connected to the water supply pipe 12 via a T-connector 30. The water outlet pipe 22 of the other water outlet component 20 can be directly connected to the water supply pipe 12, or it can be connected to the water supply pipe 12 via a T-connector; no specific limitation is made here. It is understood that in other embodiments, when multiple grinding positions require water spraying for cooling, the water supply system can also be equipped with multiple water outlet components 20 accordingly.

[0051] This embodiment also provides a control method for a water supply system, which can be applied to the aforementioned water supply system. This control method can be executed by the controlled component. The control method for the water supply system includes the following steps:

[0052] S1, turn on water pump 11;

[0053] S2, send a first signal to the first solenoid valve 21 to open the water outlet pipe 22, and send a second signal to the second solenoid valve 50 within a first preset time before sending the first signal to close the buffer hose 40.

[0054] S3, send a third signal to the first solenoid valve 21 to close the water outlet pipe 22, and send a fourth signal to the second solenoid valve 50 within a second preset time after sending the third signal to open the buffer hose 40.

[0055] S4, repeat steps S2 and S3 several times;

[0056] S5, shut off water pump 11 and send a second signal to second solenoid valve 50 to close buffer hose 40.

[0057] When the water supply system control method of this embodiment is applied to the above-mentioned water supply system, it can effectively alleviate or even completely eliminate water hammer vibration, improve the service life of water supply system components, and ensure that the outlet pipe 22 can spray water with sufficient water pressure every time it is turned on.

[0058] It should be noted that in S4, the number of times steps S2 and S3 are repeated can be set according to the number of workpieces to be ground, and there is no limit here.

[0059] Optionally, in this embodiment, both the first preset time and the second preset time are set to 1 second. In other embodiments, the values ​​of the first preset time and the second preset time may be different, and the specific values ​​may be set as appropriate with reference to parameters such as the deformation capacity of the buffer hose 40 and the water pressure required to be sprayed from the outlet pipe 22. No specific limitation is made here.

[0060] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, based on the concept of the present invention, there will be changes in specific implementation methods and application scope. The content of this specification should not be construed as a limitation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A water supply system, characterized in that, include: The water supply assembly (10) includes a water pump (11) and a water supply pipe (12), wherein the water pump (11) is capable of supplying water into the water supply pipe (12); The water outlet assembly (20) includes a first solenoid valve (21) and a water outlet pipe (22), wherein the first solenoid valve (21) is used to open and close the water outlet pipe (22); The three-way connector (30) and the buffer hose (40) are connected as follows: the first end of the three-way connector (30) is connected to the water supply pipe (12), the second end is connected to the water outlet pipe (22), and the third end is connected to the buffer hose (40). The second solenoid valve (50) is capable of closing the buffer hose (40) within a first preset time before the first solenoid valve (21) is opened, and opening the buffer hose (40) after the first solenoid valve (21) is closed for a second preset time. At least part of the aforementioned buffer hose (40) is coiled.

2. The water supply system as described in claim 1, characterized in that, The second solenoid valve (50) is located at the end of the buffer hose (40) away from the tee connector (30).

3. The water supply system as described in claim 1, characterized in that, The length of the buffer hose (40) is not less than six meters.

4. The water supply system as described in claim 1, characterized in that, The buffer hose (40) is a network cable conduit.

5. The water supply system as described in claim 1, characterized in that, The water supply pipe (12) is made of rigid material.

6. The water supply system according to any one of claims 1-5, characterized in that, The water supply system also includes a water tank (60), and the water pump (11) can pump the water in the water tank (60) into the water supply pipe (12). The outlet end of the buffer hose (40) is connected to the water tank (60).

7. The water supply system according to any one of claims 1-5, characterized in that, The water supply system includes at least two water outlet components (20), and the water outlet pipes (22) of at least two of the water outlet components (20) are connected to the water supply pipe (12). The water outlet pipe (22) of the water outlet component (20) away from the water pump (11) is connected to the tee connector (30).

8. A grinding mill, characterized in that, It includes the grinding mill body and the water supply system as described in any one of claims 1-7.

9. A control method for a water supply system, characterized in that, The water supply system control method, applicable to any one of claims 1-7, includes the following steps: S1, turn on the water pump (11); S2, send a first signal to the first solenoid valve (21) to open the water outlet pipe (22), and send a second signal to the second solenoid valve (50) within a first preset time before sending the first signal to close the buffer hose (40); S3, send a third signal to the first solenoid valve (21) to close the water outlet pipe (22), and send a fourth signal to the second solenoid valve (50) within a second preset time after sending the third signal to open the buffer hose (40); S4, repeat steps S2 and S3 several times; S5, shut down the water pump (11) and send a second signal to the second solenoid valve (50) to close the buffer hose (40).

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