Water-saving device of vibration grinding machine and control method

Abstract

The invention relates to a water-saving device of a vibration grinding machine and a control method. The water-saving device of the vibration grinding machine comprises a feeding mechanism, a vibration grinding mechanism, at least two spraying pipes, an induction baffle, an inductor and a PLC control system. The feeding mechanism is used for conveying products, a grinding groove is formed in the vibration grinding mechanism, and an inlet of the grinding groove corresponds to an outlet of the feeding mechanism in position. The spraying pipes are arranged at the grinding groove and used for lubricating and cleaning products, and each spraying pipe is provided with a spraying valve. The induction baffle is rotatably arranged at an outlet of the feeding mechanism. The inductor is arranged beside the induction baffle and used for inducting the induction baffle to judge whether products exist in the grinding groove or not when the products are conveyed to an outlet of the feeding mechanism and the induction baffle is pushed up. The PLC control system is connected with the sensor and the spraying valve and is used for controlling the spraying valve to be opened when the sensor senses the sensing baffle plate; and after the products are conveyed, when the sensor cannot sense the sensing baffle, the spraying valve is controlled to be closed in a delayed mode.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration grinding equipment, and particularly to a water-saving device and a control method for a vibration grinding machine. Background Art

[0002] Vibration grinding machines are suitable for surface polishing, chamfering, deburring, grinding, and gloss finishing of small and medium-sized workpieces. After processing, the original shape and dimensional accuracy of the parts are not damaged, the internal stress of the parts can be eliminated, and the surface finish and accuracy of the parts are improved. When the vibration grinding machine is working, pure water and grinding agent need to be sprayed into the grinding tank for lubrication and cleaning of the products. However, the spray pipes in the existing grinding tanks are usually controlled by manual switches, and there will be a blank period during mold change production, resulting in waste of water resources. Summary of the Invention

[0003] The purpose of the present invention is to provide a water-saving device and a control method for a vibration grinding machine, which can judge whether there is a product in the grinding tank, and accordingly automatically control the opening and closing of the spray valves on the spray pipes to save the sprayed water volume, and avoid waste of water resources caused by the spray valves still being open when there is no product being ground in the grinding tank.

[0004] To achieve the above object, according to the first aspect of the present invention, there is provided a water-saving device for a vibration grinding machine, including:

[0005] A feeding mechanism for conveying products;

[0006] A vibration grinding mechanism provided with a grinding tank, the inlet of the grinding tank corresponding to the outlet of the feeding mechanism, for receiving the products conveyed by the feeding mechanism and performing vibration grinding on the products;

[0007] At least two spray pipes provided at the grinding tank for lubricating and cleaning the products, and a spray valve is provided on each spray pipe;

[0008] An induction baffle rotatably provided at the outlet of the feeding mechanism;

[0009] An inductor provided beside the induction baffle for sensing the induction baffle when the product is conveyed to the outlet of the feeding mechanism to push up the induction baffle, so as to judge whether there is a product in the grinding tank;

[0010] A PLC control system connected to the inductor and the spray valve, for controlling the opening of the spray valve when the inductor senses the induction baffle; and for controlling the spray valve to be delayed to close when the inductor can no longer sense the induction baffle after the products are conveyed.

[0011] Optionally, the spray pipe includes:

[0012] The first spray pipe is arranged at the inlet of the grinding tank and is used to spray pure water and abrasive into the grinding tank to lubricate the product. A first spray valve is arranged on the first spray pipe;

[0013] The second spray pipe is arranged at the outlet of the grinding tank and is used to clean the ground product. A second spray valve is arranged on the second spray pipe.

[0014] Optionally, the PLC control system is connected to the first spray valve and is used to control the first spray valve to open when the inductor senses the induction baffle; and after the product is conveyed, when the inductor does not sense the induction baffle, control the first spray valve to close with a preset time delay.

[0015] Optionally, the PLC control system is connected to the second spray valve and is used to control the second spray valve to open with a time delay according to the running time of the product in the grinding tank when the inductor senses the induction baffle; and after the product is conveyed, when the inductor does not sense the induction baffle, control the second spray valve to close with a time delay according to the running time of the product in the grinding tank.

[0016] Optionally, the running time of the product in the grinding tank is obtained through the following calculation formula:

[0017]

[0018] wherein, T is the running time of the product in the grinding tank, L is the length of the grinding tank, w is the width of the grinding tank, θ is the inclination angle between the axis of the grinding tank and the horizontal plane, f is the vibration frequency of the vibration grinding mechanism, and k is the product property influence factor.

[0019] Optionally, the product property influence factors include product hardness influence factor, product adhesion influence factor, product temperature sensitivity influence factor, product chemical property influence factor, and product density influence factor.

[0020] Optionally, the inclination angle between the axis of the grinding tank and the horizontal plane is 15 - 20°.

[0021] According to the second aspect of the present invention, a control method for a water-saving device of a vibration grinding machine is provided, including the following steps:

[0022] When the inductor senses the induction baffle, control the spray valve to open;

[0023] After the product is conveyed, when the inductor does not sense the induction baffle, control the spray valve to close with a delay.

[0024] Optionally, when the sensor senses the induction baffle, controlling the opening of the spray valve includes the following steps:

[0025] When the sensor senses the induction baffle, controlling the opening of the first spray valve of the vibration grinding machine water-saving device and controlling the second spray valve of the vibration grinding machine water-saving device to be opened with a delay according to the running time of the product in the grinding tank.

[0026] Optionally, after the product is conveyed and the sensor does not sense the induction baffle, controlling the delayed closing of the spray valve includes the following steps:

[0027] After the product is conveyed and the sensor does not sense the induction baffle, controlling the first spray valve to close with a delay according to a preset time and controlling the second spray valve to close with a delay according to the running time of the product in the grinding tank.

[0028] The beneficial effects of the present invention are as follows: By using a sensor in cooperation with an induction baffle to judge whether there is a product in the grinding tank, and accordingly automatically controlling the opening and closing of the spray valve on the spray pipe through a PLC control system to save the spray water volume, avoiding waste of water resources caused by the spray valve still being open when there is no product being ground in the grinding tank.

[0029] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and to be implemented in accordance with the content of the description, the following describes in detail with reference to the preferred embodiments of the present invention and the accompanying drawings. Description of the Drawings

[0030] Figure 1 The first schematic structural diagram of the vibration grinding machine water-saving device shown in an embodiment of the present invention;

[0031] Figure 2 The second schematic structural diagram of the vibration grinding machine water-saving device shown in an embodiment of the present invention;

[0032] Figure 3 The schematic flow chart of the control method of the vibration grinding machine water-saving device shown in an embodiment of the present invention;

[0033] In the figure: 1, feeding mechanism; 11, conveying frame; 12, conveyor belt; 13, support plate; 2, vibration grinding mechanism; 21, grinding tank; 3, spray pipe; 31, first spray pipe; 32, second spray pipe; 4, induction baffle; 5, sensor; 6, spray valve; 61, first spray valve; 62, second spray valve. Detailed Embodiments

[0034] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0037] Please refer to Figure 1 and Figure 2 As shown in a preferred embodiment of the present application, the water-saving device of the vibration grinding machine includes a feeding mechanism 1, a vibration grinding mechanism 2, at least two spray pipes 3, an induction baffle 4, an inductor 5, and a PLC control system. The feeding mechanism 1 is used to convey products. A grinding groove 21 is provided on the vibration grinding mechanism 2. The entrance of the grinding groove 21 corresponds to the exit of the feeding mechanism 1 and is used to receive the products conveyed by the feeding mechanism 1 and perform vibration grinding on the products. The spray pipe 3 is arranged at the grinding groove 21 and is used to lubricate and clean the products. A spray valve 6 is provided on each spray pipe 3. The induction baffle 4 is rotatably arranged at the exit of the feeding mechanism 1. The inductor 5 is arranged beside the induction baffle 4 and is used to sense the induction baffle 4 when the product is conveyed to the exit of the feeding mechanism 1 to push up the induction baffle 4, so as to judge whether there is a product in the grinding groove 21. The PLC control system is connected to the inductor 5 and the spray valve 6 and is used to control the opening of the spray valve 6 when the inductor 5 senses the induction baffle 4; and to control the delayed closing of the spray valve 6 when the inductor 5 cannot sense the induction baffle 4 after the products are conveyed.

[0038] According to the solution of the embodiment of the present invention, when the product is conveyed to the induction baffle 4 by the feeding mechanism 1, the product will push up the induction baffle 4 to block the inductor 5. Immediately afterwards, the product will fall into the grinding tank 21 for vibratory grinding. Therefore, it is possible to judge whether there is a product in the grinding tank 21 by means of the inductor 5 cooperating with the induction baffle 4, and accordingly, the PLC control system automatically controls the opening and closing of the spray valve 6 on the spray pipe 3 to save the amount of sprayed water and avoid wasting water resources when the spray valve 6 remains open when there is no product to be ground in the grinding tank 21.

[0039] The following will be described in detail with specific embodiments:

[0040] Please refer to Figure 1 and Figure 2 , the feeding mechanism 1 includes a conveying frame 11, a conveyor belt 12 is arranged on the conveying frame 11, two support plates 13 are respectively arranged on both sides of the conveying frame 11, the induction baffle 4 is arranged between the two support plates 13 through a rotating shaft and is close to the outlet of the feeding mechanism 1, and the inductor 5 is arranged on one of the support plates 13 and is located between the induction baffle 4 and the outlet of the feeding mechanism 1.

[0041] The spray pipe 3 includes a first spray pipe 31 and a second spray pipe 32. The first spray pipe 31 is arranged at the entrance of the grinding tank 21 and is used for spraying pure water and grinding agent into the grinding tank 21 to lubricate the product. A first spray valve 61 is arranged on the first spray pipe 31. The second spray pipe 32 is arranged at the outlet of the grinding tank 21 and is used for cleaning the ground product. A second spray valve 62 is arranged on the second spray pipe 32.

[0042] The PLC control system is connected to the first spray valve 61 and is used for controlling the first spray valve 61 to open when the inductor 5 senses the induction baffle 4; and for controlling the first spray valve 61 to close with a preset time delay when the inductor 5 cannot sense the induction baffle 4 after the product conveying is completed.

[0043] When the inductor 5 senses the induction baffle 4, at this time, a batch of products start to fall into the grinding tank 21, and the first spray valve 61 opens, so that the first spray pipe 31 feeds pure water and grinding agent into the grinding tank 21 to facilitate the vibratory grinding mechanism 2 to perform vibratory grinding on the products falling into the grinding tank 21; after a batch of products are conveyed, when the inductor 5 cannot sense the induction baffle 4, the first spray valve 61 will be delayed to close for a short time as needed to ensure that enough pure water and grinding agent can be fed to ensure the vibratory grinding effect.

[0044] The PLC control system is connected to the second spray valve 62 and is used to control the second spray valve 62 to be opened with a delay according to the running time of the product in the grinding tank 21 when the inductor 5 senses the induction baffle 4; and when the inductor 5 cannot sense the induction baffle 4 after the product is conveyed, control the second spray valve 62 to be closed with a delay according to the running time of the product in the grinding tank 21.

[0045] When the inductor 5 senses the induction baffle 4, at this time a batch of products begins to fall into the grinding tank 21, and the products need to go through a certain running time to reach the outlet of the grinding tank 21 (i.e., the position of the second spray pipe 32). Therefore, at this time, the second spray valve 62 needs to be opened with a delay according to the running time of the product in the grinding tank 21 in order to just spray and clean the products when the front part of a batch of products reaches the outlet of the grinding tank 21; similarly, after a batch of products is conveyed, when the inductor 5 cannot sense the induction baffle 4, the end part of a batch of products also needs a certain running time to reach the outlet of the grinding tank 21. Therefore, at this time, the second spray valve 62 also needs to be closed with a delay according to the running time of the product in the grinding tank 21. By controlling the opening and closing of the first control valve and the second control valve as described above, it is possible to save water as much as possible while ensuring the grinding and cleaning effects of the products, so as to reduce the waste of water resources.

[0046] The running time of the product in the grinding tank 21 is obtained through the following calculation formula:

[0047]

[0048] Wherein, T is the running time of the product in the grinding tank 21, L is the length of the grinding tank 21, w is the width of the grinding tank 21, is the inclination angle between the axis of the grinding tank 21 and the horizontal plane, f is the vibration frequency of the vibration grinding mechanism 2, and k is the product property influence factor.

[0049] During actual operation, after the operator inputs the corresponding parameters, the PLC control system can automatically calculate the running time of the product in the grinding tank 21 and control the second control valve to be opened and closed with a delay according to the running time of the product in the grinding tank 21. This makes it more convenient for the machine operator to operate the equipment, and at the same time avoids the risk of errors caused by the operator calculating the values by himself.

[0050] Specifically, the product property influence factors include the product hardness influence factor, the product adhesion influence factor, the product temperature sensitivity influence factor, the product chemical property influence factor, the product density influence factor, etc. During actual application, the specific product property influence factors can be adjusted according to the different types of products.

[0051] Specifically, the inclination angle between the axis of the grinding tank 21 and the horizontal plane is 15 - 20°.

[0052] Please refer to Figure 3 , the embodiment of the present invention also provides a control method for a water-saving device of a vibration grinding machine, including the following steps:

[0053] Step S10: When the sensor 5 senses the sensing baffle 4, control the spray valve 6 to open;

[0054] Step S20: After the product is conveyed, when the sensor 5 does not sense the sensing baffle 4, control the spray valve 6 to close with a delay.

[0055] This step S10 includes the following steps:

[0056] When the sensor 5 senses the sensing baffle 4, control the first spray valve 61 to open and control the second spray valve 62 to open with a delay according to the running time of the product in the grinding tank 21.

[0057] This step S20 includes the following steps:

[0058] After the product is conveyed, when the sensor 5 does not sense the sensing baffle 4, control the first spray valve 61 to close with a delay according to a preset time and control the second spray valve 62 to close with a delay according to the running time of the product in the grinding tank 21.

[0059] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0060] The above-described embodiments merely represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. Water-saving device for vibratory grinding machine, characterized in that, Comprising: A feeding mechanism for conveying products; A vibration grinding mechanism provided with a grinding groove, the inlet of the grinding groove corresponding to the outlet of the feeding mechanism, for receiving the products conveyed by the feeding mechanism and performing vibration grinding on the products; At least two spray pipes arranged at the grinding groove for lubricating and cleaning the products, and a spray valve is arranged on each spray pipe; An induction baffle rotatably arranged at the outlet of the feeding mechanism; An inductor arranged beside the induction baffle for sensing the induction baffle when the product is pushed up to the outlet of the feeding mechanism to judge whether there is a product in the grinding groove; A PLC control system connected to the inductor and the spray valve, for controlling the opening of the spray valve when the inductor senses the induction baffle; and after the products are conveyed, when the inductor cannot sense the induction baffle, controlling the spray valve to close with a delay.

2. The water-saving device for a vibration grinding machine according to claim 1, characterized in that, The spray pipe includes: A first spray pipe arranged at the inlet of the grinding groove for spraying pure water and grinding agent into the grinding groove to lubricate the products, and a first spray valve is arranged on the first spray pipe; A second spray pipe arranged at the outlet of the grinding groove for cleaning the ground products, and a second spray valve is arranged on the second spray pipe.

3. The water-saving device for a vibratory grinding machine according to claim 2, wherein The PLC control system is connected to the first spray valve, for controlling the opening of the first spray valve when the inductor senses the induction baffle; and after the products are conveyed, when the inductor cannot sense the induction baffle, controlling the first spray valve to close with a preset time delay.

4. The water-saving device for a vibratory grinding machine according to claim 2, characterized in that, The PLC control system is connected to the second spray valve, for controlling the second spray valve to open with a delay according to the running time of the products in the grinding groove when the inductor senses the induction baffle; and after the products are conveyed, when the inductor cannot sense the induction baffle, controlling the second spray valve to close with a delay according to the running time of the products in the grinding groove.

5. The water-saving device of the vibratory grinding machine according to claim 4, characterized in that, The running time of the products in the grinding groove is obtained through the following calculation formula: Wherein, T is the running time of the products in the grinding groove, L is the length of the grinding groove, w is the width of the grinding groove, θ is the inclination angle between the axis of the grinding groove and the horizontal plane, f is the vibration frequency of the vibration grinding mechanism, and k is the product property influence factor.

6. The water-saving device of the vibratory grinding machine according to claim 5, wherein, The product property influence factor includes product hardness influence factor, product adhesion influence factor, product temperature sensitivity influence factor, product chemical property influence factor and product density influence factor.

7. The water-saving device for a vibratory grinding machine according to claim 5, characterized in that, The inclination angle between the axis of the grinding groove and the horizontal plane is 15 - 20°.

8. A control method for a water-saving device of a vibration grinding machine according to any one of claims 1 to 7, characterized in that, Including the following steps: Controlling the opening of the spray valve when the inductor senses the induction baffle; After the products are conveyed, when the inductor cannot sense the induction baffle, controlling the spray valve to close with a delay.

9. The control method of the water-saving device of the vibration grinding machine according to claim 8, characterized in that The controlling the opening of the spray valve when the inductor senses the induction baffle includes the following steps: When the sensor senses the induction baffle, control the first spray valve of the vibration grinding machine water-saving device to open and control the second spray valve of the vibration grinding machine water-saving device to open with a delay according to the running time of the product in the grinding tank.

10. The control method of the water-saving device of the vibration grinding machine according to claim 9, characterized in that, After the product is conveyed, when the sensor does not sense the induction baffle, controlling the spray valve to close with a delay includes the following steps: After the product is conveyed, when the sensor does not sense the induction baffle, control the first spray valve to close with a delay according to a preset time and control the second spray valve to close with a delay according to the running time of the product in the grinding tank.

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