Multi-hole type vacuum chuck and numerical control machining equipment

Abstract

The utility model discloses a multi-hole type vacuum chuck and numerical control machining equipment, the multi-hole type vacuum chuck comprises a chuck body and at least one negative pressure detection assembly, the surface of the chuck body is provided with a plurality of suction holes, the suction holes are used for sucking workpieces, and the negative pressure detection assembly is connected to the chuck body. The negative pressure detection assembly is used for detecting the adsorption state when the suction hole adsorbs the workpiece. The negative pressure detection assembly is used for detecting the negative pressure generated when the suction holes adsorb the workpieces, it can be ensured that the porous vacuum suction cup normally works in numerical control machining equipment, the stable adsorption performance is maintained, and the reliability and safety of the porous vacuum suction cup are improved.

Description

Technical Field

[0001] This application relates to the field of porous vacuum chuck technology, and more specifically, to a porous vacuum chuck and CNC machining equipment. Background Technology

[0002] A porous vacuum suction cup is a device that uses the principle of vacuum to adsorb, move, or fix objects. It has multiple suction holes to increase the suction force and stability. When the suction cup comes into contact with the surface of an object, the air inside the suction cup is drawn out, creating a negative pressure. This allows the atmospheric pressure outside the suction cup to press the object firmly against the suction cup, thereby achieving the purpose of adsorbing and fixing the object.

[0003] For example, in machining, the workpiece needs to be fixed in place before processing can begin. However, some workpieces cannot be fixed directly using ordinary clamps or magnetic chucks. They usually require the use of a perforated vacuum chuck to fix them. For example, a perforated vacuum chuck can be used to fix workpieces made of materials such as acrylic, plastic, stainless steel, aluminum, and other metals.

[0004] However, during the processing and production process, these porous vacuum chucks may experience adsorption failures, such as unstable fixation of the workpiece, insecure clamping, or easy loosening. If these issues are not detected and addressed in time, they can cause serious damage to the workpiece or CNC machining equipment, and endanger the personal safety of workers.

[0005] Therefore, existing technologies need to be improved. Utility Model Content

[0006] The purpose of this application is to provide a porous vacuum chuck and CNC machining equipment, which aims to solve the technical problem of how to monitor the adsorption failure of the porous vacuum chuck in the prior art.

[0007] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0008] In a first aspect, this application provides a porous vacuum chuck, comprising:

[0009] A suction cup body, the surface of which has multiple suction holes for adsorbing workpieces;

[0010] At least one negative pressure detection component is provided, which is connected to the suction cup body and is used to detect the adsorption state when the suction hole adsorbs the workpiece.

[0011] In one embodiment, the negative pressure detection component includes:

[0012] A detection connector is disposed on the surface of the suction cup body;

[0013] The detection channel is fixed inside the suction cup body and is connected to the detection connector;

[0014] A pressure sensor is connected to a detection pipe and is used to detect the adsorption state of the workpiece when the suction hole adsorbs it.

[0015] In one embodiment, the detection connector is located at the middle of the suction cup body.

[0016] In one embodiment, the detection connectors are configured as a plurality of connectors, and all of the plurality of detection connectors are connected to the detection pipe, and the plurality of detection connectors are connected to the pressure sensor through the detection pipe.

[0017] In one embodiment, the detection connector includes:

[0018] A straight-bend connector is attached to the surface of the suction cup body;

[0019] A connector fixing head is disposed on the straight-bend connector and is used to fix it to the suction cup body;

[0020] A connector fixing nut is provided at the end of the straight-bend connector away from the connector fixing head, and the connector fixing nut is used to connect to the test pipe.

[0021] In one implementation, it further includes:

[0022] A PLC module is connected to the air pressure sensor.

[0023] An alarm module is connected to the PLC module.

[0024] In one embodiment, the alarm module includes at least one of the following structures:

[0025] Audible and visual alarms or buzzer alarms.

[0026] In one embodiment, the suction cup body is provided with multiple vacuum pipes, a movable valve body, and at least one negative pressure chamber. The vacuum pipes are used to communicate with the suction hole. The movable valve body is connected to the vacuum pipes and the negative pressure chamber. The negative pressure chamber is used to connect to a negative pressure source. The movable valve body is connected to a drive source. The movable valve body is driven by the drive source to sequentially connect to the multiple vacuum pipes.

[0027] In one embodiment, the suction cup body is provided with a plurality of vacuum channels, which are used to communicate with the suction hole;

[0028] The multi-hole vacuum suction cup also includes a negative pressure active control valve, which is connected to the vacuum pipe and the negative pressure source. The negative pressure active control valve is used to sequentially open and connect multiple vacuum pipes.

[0029] Secondly, this application provides a CNC machining equipment, which includes the porous vacuum chuck described in the above embodiment. Therefore, this CNC machining equipment can possess all the features and beneficial effects of the aforementioned porous vacuum chuck, which will not be elaborated further.

[0030] The beneficial effects of the multi-hole vacuum chuck and CNC machining equipment provided in this application are at least as follows:

[0031] This application discloses a porous vacuum chuck and a CNC machining device. The porous vacuum chuck includes a chuck body and at least one negative pressure detection component. The surface of the chuck body has multiple suction holes for adsorbing workpieces. The negative pressure detection component is connected to the chuck body and is used to detect the adsorption state when the workpiece is adsorbed by the suction holes. This application, by detecting the negative pressure when the workpiece is adsorbed by the suction holes through the negative pressure detection component, can ensure that the porous vacuum chuck works normally in the CNC machining device and maintains stable adsorption performance, thereby improving the reliability and safety of the porous vacuum chuck. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 A schematic diagram illustrating the working principle of the porous vacuum chuck provided in this application embodiment;

[0034] Figure 2 This is a schematic diagram of a specific embodiment of the porous vacuum chuck provided in this application.

[0035] Figure 3 An exploded view of the porous vacuum chuck provided in the embodiments of this application;

[0036] Figure 4 This is a schematic diagram of a specific embodiment of the detection connector provided in this application.

[0037] Figure 5 This is a schematic diagram illustrating the working principle of a specific embodiment of the porous vacuum suction cup provided in this application.

[0038] The following are the labeling elements in the figure:

[0039] 100. Suction cup body; 200. Negative pressure detection component; 300. PLC module; 400. Alarm module; 500. Workpiece; 600. Negative pressure control valve; 700. CNC machining equipment; 110. Suction hole; 120. Vacuum pipeline; 130. Suction cup cover plate; 140. Movable valve body; 150. Drive source; 210. Detection connector; 220. Detection pipeline; 230. Air pressure sensor; 211. Straight and bent connecting pipes; 212. Connecting pipe fixing head; 213. Connecting pipe fixing nut. Detailed Implementation

[0040] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0041] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0042] Example 1:

[0043] Please see Figure 1 and Figure 2 This embodiment provides a porous vacuum suction cup, which includes: a suction cup body 100 and at least one negative pressure detection component 200. The surface of the suction cup body 100 has a plurality of suction holes 110, which are used to adsorb workpieces 500. The negative pressure detection component 200 is connected to the suction cup body 100 and is used to detect the adsorption state of the workpieces 500 when the suction holes 110 adsorb them.

[0044] In this embodiment, the porous vacuum suction cup generates negative pressure through multiple suction holes 110 on the surface of the suction cup body 100, thereby adsorbing the workpiece 500. When the porous vacuum suction cup comes into contact with the workpiece 500, the internal air between them is drawn away, creating a negative pressure environment. The external atmospheric pressure then presses the workpiece 500 tightly onto the suction cup. For example, when the porous vacuum suction cup is connected to a negative pressure source, the air inside the porous vacuum suction cup is drawn out, creating an environment lower than atmospheric pressure. Because the gas pressure inside the porous vacuum suction cup is lower than that outside, external air cannot enter the suction cup, and the strong negative pressure suction firmly fixes the workpiece 500 to the suction cup surface.

[0045] The suction cup body 100 is equipped with a vacuum pipe 120, which connects a negative pressure source to multiple suction holes 110. Each suction hole 110 is equipped with a vacuum logic valve. When there is no workpiece 500 on the suction hole 110, the vacuum logic valve closes, thus closing the suction hole 110. This prevents the negative pressure gas (actually the suction process, but represented by negative pressure gas for clarity) from escaping from the suction hole 110 and being wasted. When there is a workpiece 500 on the suction hole 110, the vacuum logic valve opens, thus opening the suction hole 110. In this way, the negative pressure in the suction hole 110 can firmly hold the workpiece 500. The negative pressure detection component 200 is used to detect the negative pressure when the suction hole 110 holds the workpiece 500. The negative pressure detection component 200 can monitor the vacuum pressure between the workpiece 500 and the suction hole 110, and the vacuum status of the entire suction cup is judged by the feedback from the negative pressure detection component 200.

[0046] For example, when the suction cup is not adsorbing workpiece 500, the negative pressure source is activated, the vacuum logic valve is closed, and the vacuum pressure inside the suction cup body 100 remains unchanged. When workpiece 500 is placed on the suction cup body 100, the negative pressure source is activated. Once workpiece 500 is adsorbed and the system is well sealed, the vacuum pressure inside the suction cup body 100 will rise until it reaches the set value. When the adsorption system leaks, the vacuum pressure will drop, that is, the adsorption force will also decrease. The negative pressure detection component 200 can provide real-time feedback on the vacuum pressure when adsorbing workpiece 500, which can effectively monitor the working status of the suction cup, not only improving production efficiency but also ensuring production quality.

[0047] For example, a multi-hole vacuum chuck is used in CNC machining equipment 700 (CNC lathe, CNC milling machine, CNC drilling machine, CNC grinding machine, etc.). The multi-hole vacuum chuck acts as a table fixture for the CNC machining equipment 700. When the multi-hole vacuum chuck adsorbs the workpiece 500, the CNC machining equipment 700 can process the workpiece 500. The negative pressure detection component 200 can monitor the negative pressure state between the chuck and the workpiece 500 in real time. If the multi-hole vacuum chuck fails to adsorb, the negative pressure detection component 200 will promptly feed back a failure signal and give a warning message to remind the operator. At the same time, the CNC machining equipment 700 can be stopped in time to avoid damage to the workpiece 500 or the CNC machining equipment 700.

[0048] Therefore, this embodiment uses the negative pressure detection component 200 to detect the adsorption state of the workpiece 500 when the suction hole 110 adsorbs it, which can ensure that the porous vacuum chuck works normally in the CNC machining equipment 700 and maintains stable adsorption performance, thereby improving the reliability and safety of the porous vacuum chuck.

[0049] Specifically, please refer to Figure 2 The negative pressure detection component 200 includes: a detection connector 210, a detection pipe 220, and a pressure sensor 230. The detection connector 210 is disposed on the surface of the suction cup body 100 and is used to connect the suction hole 110 and the workpiece 500. The detection pipe 220 is fixed to the suction cup body 100 and extends outward from the suction cup body 100, and the detection pipe 220 is connected to the detection connector 210. The pressure sensor 230 is connected to the detection pipe 220 and is used to detect the adsorption state when the suction hole 110 adsorbs the workpiece 500.

[0050] In this embodiment, the detection connector 210 can be installed and fixed on the surface of the suction cup body 100. The air pressure sensor 230 is connected to the vacuum pipe 120 through the detection connector 210 and the detection pipe 220. This means that the air pressure sensor 230 can monitor the vacuum pressure between the workpiece 500 and the suction hole 110 in real time, so as to realize the real-time monitoring of the adsorption state of the suction hole 110 and ensure the reliability and safety of the suction cup.

[0051] For example, when the workpiece 500 is placed on the upper surface of the suction cup body 100, the workpiece 500 can cover the detection connector 210. If the workpiece 500 fails to be adsorbed, the air pressure sensor 230 can detect the negative pressure when the suction hole 110 adsorbs the workpiece 500 through the detection connector 210, and provide real-time feedback on the adsorption status between the suction hole 110 and the workpiece 500, which is efficient and accurate.

[0052] Theoretically, the pressure sensor 230 can monitor the negative pressure inside the suction cup body 100 to monitor the adsorption status of the suction hole 110. This is equivalent to the detection connector 210 being placed inside the vacuum pipe 120, rather than on the upper surface of the suction cup body 100. When the suction cup contacts the workpiece 500, internal air is drawn away, creating a negative pressure environment. The pressure sensor 230 monitors the vacuum pressure inside the suction cup body 100. Firstly, when the suction cup does not adsorb the workpiece 500, the negative pressure source is activated, and the vacuum logic valve closes. At this time, the negative pressure inside the suction cup body 100 is still normal, but the suction hole 110 is not adsorbing the workpiece 500. Firstly, even if the suction hole 110 fails, the pressure sensor 230 will not detect it. Secondly, the detection connector 210 is placed inside the vacuum pipe 120, which is equivalent to placing the detection connector 210 inside a balloon. When a balloon leaks, for example, when the negative pressure drops from 80 to 70, the balloon will shrink in volume, but the internal air pressure may not change. When the suction force between the workpiece 500 and the suction hole 110 decreases, the negative pressure source continues to work and keeps drawing a vacuum, while the negative pressure inside the suction cup body 100 may not fluctuate. Therefore, the detection connector 210 being placed inside the suction cup body 100 may fail to detect the problem.

[0053] Optionally, please refer to Figure 2 The detection connector 210 is located in the middle of the suction cup body 100.

[0054] For example, during the processing, the workpiece 500 is placed in the middle of the suction cup, while the detection connector 210 is placed in the middle of the suction cup body 100. This facilitates the processing of the workpiece 500 and can effectively monitor the adsorption state between the workpiece 500 and the suction hole 110. The structure is simple and easy to implement.

[0055] Optionally, multiple detection connectors 210 can be configured, and all multiple detection connectors 210 are connected to the detection pipe 220. The multiple detection connectors 210 are connected to the air pressure sensor 230 through the detection pipe 220.

[0056] For example, multiple detection connectors 210 can be provided, and multiple detection connectors 210 are distributed at various positions on the surface of the suction cup body 100, such as the left position, the middle position and the right position. When multiple workpieces 500 are placed on the suction cup body 100, one detection connector 210 can be arranged to correspond to one workpiece 500, thereby enabling one suction cup to simultaneously adsorb multiple workpieces 500 and monitor the adsorption status of all workpieces 500.

[0057] Specifically, please refer to Figure 3 and Figure 4The test connector 210 includes: a straight-bend pipe 211, a pipe fixing head 212, and a pipe fixing nut 213. The straight-bend pipe 211 is connected to the surface of the suction cup body 100. The pipe fixing head 212 is disposed on the straight-bend pipe 211 and is used to fix it to the suction cup body 100. The pipe fixing nut 213 is disposed at the end of the straight-bend pipe 211 away from the pipe fixing head 212 and is used to connect to the test pipe 220.

[0058] In this embodiment, the connector fixing head 212 is used to install on the suction cup body 100. For example, a suction cup cover plate 130 can be provided on the suction cup body 100. The suction cup cover plate 130 has a plurality of suction holes 110 and a mounting hole. Alternatively, the connector fixing head 212 can be directly sealed and fixed on the suction holes 110. The straight-bent connector 211 is connected to the connector fixing head 212 and the connector fixing nut 213. The connector fixing head 212 is perpendicular to the horizontal plane of the vacuum pipe 120, while the end of the straight-bent connector 211 is parallel to the horizontal plane of the vacuum pipe 120. The end of the straight-bent connector 211 is provided with a connector fixing nut 213, which is used to connect with the detection pipe 220 to realize the arrangement of the detection pipe 220 in the vacuum pipe 120 of the suction cup body 100.

[0059] Specifically, please refer to Figure 5 The multi-hole vacuum suction cup may also include a PLC module 300 and an alarm module 400. The PLC module 300 is connected to the air pressure sensor 230, and the alarm module 400 is connected to the PLC module 300.

[0060] In this embodiment, the pressure sensor 230 can monitor the vacuum pressure in the vacuum pipe 120 in real time and generate a vacuum electrical signal to feed back to the PLC module 300. If the vacuum electrical signal is an adsorption failure signal, the PLC module 300 can control the alarm module 400 to issue a warning reminder to the operator in a timely manner. At the same time, the PLC module 300 can be connected to the CNC machining equipment 700. If the PLC module 300 receives an adsorption failure signal, it can also control the CNC machining equipment 700 to stop in time to avoid safety accidents.

[0061] Optionally, the alarm module 400 includes at least one of the following structures:

[0062] Audible and visual alarms or buzzer alarms.

[0063] For example, the alarm module 400 may include an audible and visual alarm. When the air pressure sensor 230 detects that the suction hole 110 fails to adsorb the workpiece 500, the PLC module 300 can control the audible and visual alarm to issue an audible and visual alarm to remind the operator.

[0064] For example, the alarm module 400 may include a buzzer alarm. When the air pressure sensor 230 detects that the suction hole 110 fails to adsorb the workpiece 500, the PLC module 300 can control the buzzer alarm to sound an alarm to remind the operator.

[0065] For example, the alarm module 400 may include an audible and visual alarm and a buzzer alarm. When the air pressure sensor 230 detects that the suction hole 110 fails to adsorb the workpiece 500, the PLC module 300 can control the audible and visual alarm to issue an audible and visual alarm, and at the same time the buzzer alarm will issue a buzzer alarm to remind the operator.

[0066] Optionally, please combine Figure 3 The suction cup body 100 is provided with multiple vacuum pipes 120, a movable valve body 140 and at least one negative pressure chamber. The vacuum pipes 120 are used to communicate with the suction hole 110. The movable valve body 140 is connected to the vacuum pipes 120 and the negative pressure chamber. The negative pressure chamber is used to connect to a negative pressure source. The movable valve body 140 is connected to a drive source 150. The movable valve body 140 is driven by the drive source 150 to sequentially connect to multiple vacuum pipes 120.

[0067] In this embodiment, a movable valve body 140 is provided inside the suction cup body 100. The movable valve body 140 is connected to multiple vacuum pipes 120 in sequence by the drive source 150. During operation, the drive source 150 causes the movable valve body 140 to open in sequence, and the vacuum pipes 120 are filled with negative pressure gas in sequence. This causes the suction holes 110 on the suction cup body 100 to generate negative pressure in different areas. The limited amount of negative pressure gas in the negative pressure chamber is first dispersed to a small part of the suction holes 110, avoiding the limited amount of negative pressure gas being dispersed to all the suction holes 110 at once. This makes the suction holes 110 have a larger suction force in the initial stage of generating negative pressure, improving the negative pressure suction force on the suction holes 110 in the initial stage of adsorption. As a result, a stronger suction force can be generated at the initial moment of adsorption of the processed workpiece, and the adsorption effect is good.

[0068] Optionally, please refer to Figure 3 The suction cup body 100 is provided with multiple vacuum pipes 120, which are used to communicate with suction holes 110; the multi-hole vacuum suction cup also includes a negative pressure active control valve 600, which is connected to the vacuum pipes 120 and the negative pressure source, and is used to sequentially open and connect multiple vacuum pipes 120.

[0069] In this embodiment, the negative pressure active control valve 600 can be separately set from the suction cup body 100, which is equivalent to the negative pressure active control valve 600 being independently set outside the suction cup body 100. The negative pressure active control valve 600 can include an active valve body 140 and a drive source 150. The active valve body 140 and the drive source 150 can be set outside the suction cup body 100, and the vacuum pipe 120 can be directly connected to the connecting pipe on the active valve body 140. This can greatly reduce the thickness of the suction cup body 100 and reduce the height of the suction cup on the CNC machining equipment 700 worktable, providing clearance space for the CNC machining equipment 700 machining operations. At the same time, this setting can facilitate the disassembly and maintenance of the negative pressure active control valve 600.

[0070] Example 2:

[0071] Please see Figure 2 This embodiment provides a CNC machining equipment, wherein the CNC machining equipment 700 may include the porous vacuum chuck as described in the above embodiment. Therefore, this CNC machining equipment can possess all the features and beneficial effects of the aforementioned porous vacuum chuck, which will not be elaborated further.

[0072] In summary, this application discloses a porous vacuum chuck and a CNC machining device. The porous vacuum chuck includes a chuck body and at least one negative pressure detection component. The chuck body has multiple suction holes on its surface, which are used to adsorb workpieces. The negative pressure detection component is connected to the chuck body and is used to detect the adsorption state when the workpiece is adsorbed by the suction holes. This application, by detecting the negative pressure when the workpiece is adsorbed by the suction holes using the negative pressure detection component, ensures that the porous vacuum chuck operates normally in the CNC machining device and maintains stable adsorption performance, thereby improving the reliability and safety of the porous vacuum chuck.

[0073] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A porous vacuum suction cup, characterized in that, include: The suction cup body has multiple suction holes on its surface, and a vacuum logic valve is installed inside each suction hole. The suction holes are used to adsorb workpieces. At least one negative pressure detection component is provided, which is connected to the suction cup body and is used to detect the adsorption state when the suction hole adsorbs the workpiece. The negative pressure detection component includes: A detection connector is disposed on the surface of the suction cup body; The detection channel is fixed inside the suction cup body and is connected to the detection connector; A pressure sensor is connected to a detection pipe and is used to detect the adsorption state of the workpiece when the suction hole adsorbs it.

2. The porous vacuum suction cup as described in claim 1, characterized in that, The detection connector is located in the middle of the suction cup body.

3. The porous vacuum suction cup as described in claim 1, characterized in that, The detection connectors are configured as multiple, and all of the multiple detection connectors are connected to the detection pipe. The multiple detection connectors are connected to the air pressure sensor through the detection pipe.

4. The porous vacuum suction cup as described in claim 1, characterized in that, The detection connector includes: A straight-bend connector is attached to the surface of the suction cup body; A connector fixing head is disposed on the straight-bend connector and is used to fix it to the suction cup body; A connector fixing nut is provided at the end of the straight-bend connector away from the connector fixing head, and the connector fixing nut is used to connect to the test pipe.

5. The porous vacuum suction cup as described in claim 1, characterized in that, Also includes: A PLC module is connected to the air pressure sensor. An alarm module is connected to the PLC module.

6. The porous vacuum suction cup as described in claim 5, characterized in that, The alarm module includes at least one of the following structures: Audible and visual alarms or buzzer alarms.

7. The porous vacuum suction cup as described in claim 1, characterized in that, The suction cup body is provided with multiple vacuum pipes, a movable valve body, and at least one negative pressure chamber. The vacuum pipes are used to communicate with the suction hole. The movable valve body is connected to the vacuum pipes and the negative pressure chamber. The negative pressure chamber is used to connect to a negative pressure source. The movable valve body is connected to a drive source. The movable valve body is driven by the drive source to sequentially connect multiple vacuum pipes.

8. The porous vacuum suction cup as described in claim 1, characterized in that, The suction cup body is provided with multiple vacuum channels, which are used to communicate with the suction holes; The multi-hole vacuum suction cup also includes a negative pressure active control valve, which is connected to the vacuum pipe and the negative pressure source. The negative pressure active control valve is used to sequentially open and connect multiple vacuum pipes.

9. A CNC machining equipment, characterized in that, Including the porous vacuum chuck as described in any one of claims 1-8.

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