One-way valve plate and integrated suction cup

Abstract

The present application provides a one-way valve plate, comprising: a valve body, a connecting groove is provided along the transverse and longitudinal directions thereof, and an air guide groove connected to the connecting groove is provided at intervals, the air guide groove comprises a first step groove and a second step groove arranged in a stacked manner, and a micropore penetrating the valve body and connected to the vacuum chamber is provided on the bottom surface of the first step groove; a flexible pad, comprising a connecting portion and an air guide portion provided on the connecting portion, the connecting portion is filled in the connecting groove, the air guide portion comprises a first filling portion, a flexible sheet and a second filling portion, the first filling portion is filled in the first step groove, the second filling portion is filled in the second step groove and abuts against the suction cup, so that the suction cup faces the micropore, and in the vertical direction, the flexible sheet is located above the micropore, and forms a negative pressure channel between the flexible sheet and the bottom surface of the first step groove. The present application also provides an integrated suction cup, comprising the above-mentioned one-way valve plate. The present application prevents dust from entering by providing micropores, flexible sheets and negative pressure channels, and can blow up the flexible member to blow out the dust.

Description

Technical Field

[0001] The present application relates to the technical field of vacuum suction cups, and in particular to a one-way valve plate and an integrated suction cup. Background Art

[0002] In the production process of PCB boards, the density of holes on PCB boards is increased to meet the high requirements of existing PCB boards. Therefore, in the process of picking up PCB boards, it is usually necessary to increase the density of the suction nozzles of the integrated suction cups to ensure the stability of vacuum picking.

[0003] However, the existing vacuum logic valve cannot be integrated on the same plate due to its large size. For this reason, in the Chinese patent application document CN219155812U, a porous integrated suction cup is provided, a flow limiting plate and a pressure plate are provided on the main body, and a plurality of flow limiting holes and guide grooves connected to the plurality of flow limiting holes are provided on the flow limiting plate, and the flow limiting holes are provided opposite to the suction cup, so that negative pressure is applied to the guide groove through the vacuum chamber and transmitted to the suction cup through the flow limiting holes, thereby realizing the grabbing of the PCB board.

[0004] Chinese patent application document CN101138834A also proposes a negative pressure vacuum adsorption device and an edging device using the device, which achieves the effect of negative pressure adsorption by arranging a suction cup portion on the suction cup seat, arranging a concave hole between the suction cup portion and the suction cup seat, arranging the suction cup portion in the concave hole, arranging a pipeline on the suction cup portion and arranging a negative pressure pipeline connected to the management, and realizing a vacuum environment for the pipeline in the suction cup seat through the negative pressure pipeline.

[0005] However, when the vacuum suction cups mentioned in the above-mentioned prior art and Chinese patent application documents are used in a dusty environment, the pipes in the suction cup are connected through the vacuum cavity, so that the pipes in the suction cup form a negative pressure to adsorb the PCB board or glass parts. This can easily cause dust to clog the pipes, thereby affecting the normal use of the vacuum suction cup. When the pipes in the vacuum suction cup are clogged, it is often difficult to clean the dust due to the small holes. Summary of the invention

[0006] In view of this, it is necessary to provide a one-way valve plate and an integrated suction cup that can prevent the suction cup pipeline from being blocked and facilitate dust cleaning, so as to solve the above problems.

[0007] The embodiment of the present application provides a one-way valve plate, the two opposite sides of which are used to connect the suction cup and the vacuum chamber, and are used to absorb the workpiece in a dusty environment, including:

[0008] The valve body is provided with connecting grooves in the transverse and longitudinal directions thereof, and is provided with air guide grooves communicating with the connecting grooves at intervals, the air guide grooves include a first step groove and a second step groove arranged in a stacked manner, a micropore penetrating the valve body and communicating with the vacuum chamber is provided on the bottom surface of the first step groove, and the diameter of the micropore is 0.2 mm-0.5 mm;

[0009] A flexible pad, comprising a connecting portion and an air guide portion provided on the connecting portion, wherein the connecting portion is plugged in the connecting groove, and the air guide portion comprises a first plugging portion, a flexible sheet, and a second plugging portion, wherein the first plugging portion is plugged in the first step groove, and the second plugging portion is plugged in the second step groove and abuts against the suction cup so that the suction cup faces the micropore, and along the vertical direction, the flexible sheet is located above the micropore and forms a negative pressure channel with the bottom surface of the first step groove;

[0010] Before the one-way valve plate adsorbs the workpiece, the vacuum chamber is opened to adsorb the flexible sheet, and the flexible sheet squeezes and blocks the micropores to prevent dust from entering; when the one-way valve plate adsorbs the workpiece and discharges the air in the suction cup, the flexible sheet is reset and releases the negative pressure channel to connect the suction cup with the vacuum chamber; when the one-way valve plate cleans the dust, the vacuum chamber blows air into the micropores to blow open the flexible sheet to blow out the dust; before the one-way valve plate adsorbs the workpiece, the depth of the negative pressure channel is equal to the diameter of the micropores.

[0011] In at least one embodiment of the present application, the first plugging portion includes a first surface, a second surface, and a third surface that are sequentially arranged, and the first surface is arranged opposite to the third surface;

[0012] The second plugging portion is disposed around the first surface toward the third surface and surrounds to form a first air guide groove facing the micropore;

[0013] The flexible sheet extends outward from the second surface, and when viewed along the vertical direction, the flexible sheet covers the microholes.

[0014] In at least one embodiment of the present application, the width of the flexible sheet gradually increases along the central axis of the flexible sheet toward the second surface, so as to form a second air guide groove connected to the first air guide groove and the negative pressure channel, so as to allow the gas in the vacuum chamber to flow into or out of the inner cavity of the suction cup.

[0015] In at least one embodiment of the present application, the flexible sheet has a first arc surface facing the second air guide groove, and the second filling portion has a second arc surface facing the second air guide groove;

[0016] The diameter of the first arc surface is equal to the diameter of the second arc surface, which is used to reduce the stress of the flexible sheet and the second plugging portion when blowing air into the micropores to clean the dust in the one-way valve plate.

[0017] In at least one embodiment of the present application, the second surface includes a first area, a second area, and a third area that are adjacently arranged;

[0018] The second filling portion is disposed around the first area, the flexible sheet is disposed on the second area, and the second area and the third area extend into and fill the first step groove;

[0019] The width of the second region is equal to the width of the third region, which is equal to the diameter of the micropore, and when air is blown into the micropore to clean the dust in the one-way valve plate, the flexible sheet is deformed into the first region.

[0020] In at least one embodiment of the present application, the air guide portion further includes a sealing portion, which is disposed between the first filling portion and the second filling portion, and is used for squeezing the sealing portion between the connecting groove and the air guide groove when the flexible pad is filled in the connecting groove and the air guide groove.

[0021] In at least one embodiment of the present application, the valve body is further provided with a plurality of rows of flow limiting grooves on the side facing away from the flexible pad;

[0022] Each row of the limiting grooves is respectively connected to a plurality of the micropores, so that when air is blown toward each row of the limiting grooves, the gas in the limiting grooves is evenly distributed into each of the micropores.

[0023] In at least one embodiment of the present application, the plurality of rows of flow limiting grooves are connected to the vacuum chamber, so that when blowing air into the vacuum chamber, the gas in the vacuum chamber is evenly distributed to each of the flow limiting grooves.

[0024] An integrated suction cup, comprising:

[0025] The one-way valve plate as described above;

[0026] A plurality of suction cups, each of which is held against the air guide portion and disposed directly opposite to the microhole;

[0027] The vacuum chamber is arranged on a side of the flexible pad facing away from the suction cup and is connected to the micropores to form negative pressure or ventilation in the micropores.

[0028] This application has at least the following beneficial effects:

[0029] 1. This application sets micropores of 0.2mm-0.5mm on the first step groove, and places the flexible sheet above the micropores before use, and forms a negative pressure channel between the flexible sheet and the first step groove, so that when the one-way valve plate and the integrated suction cup are used, the flexible sheet can first stop the dust above. If the one-way valve plate opens the negative pressure of the vacuum chamber before adsorbing the workpiece, the suction cup is connected to the atmosphere, and the flexible sheet is squeezed to block the micropores under the action of pressure, thereby preventing the lateral entry of dust. After the one-way valve plate is used, air is blown into the micropores through the vacuum chamber to blow open the flexible sheet and blow out the dust.

[0030] 2. Before the one-way valve plate adsorbs the workpiece, the depth of the negative pressure channel is made equal to the diameter of the micropore to reduce the diameter of the negative pressure channel, thereby further preventing dust from entering through the negative pressure channel before the flexible sheet is adsorbed. Furthermore, by arranging the first area, the second area and the third area on the second surface, arranging the flexible sheet in the second area, and making the width of the second area equal to the width of the third area equal to the diameter of the micropore, the depth of the negative pressure channel is equal to the diameter of the micropore.

[0031] 3. By providing a first arc surface on the flexible sheet and a second arc surface on the second plugging portion, and making the diameters of the first arc surface and the second arc surface equal, when the one-way valve body is cleaning dust, the flexible sheet can be deformed from the second area to the first area, thereby facilitating the cleaning of dust in the one-way valve plate. Furthermore, when the flexible sheet is deformed, the first arc surface and the second arc surface can reduce the stress on the flexible sheet caused by gas impact, thereby preventing the flexible sheet from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a stereoscopic image of the one-way valve plate in the first embodiment of the present application from a first viewing angle.

[0033] Figure 2 A stereoscopic view of the one-way valve plate in the first embodiment of the present application from a second viewing angle

[0034] Figure 3 for Figure 1 A front view of the valve body is shown.

[0035] Figure 4 for Figure 1 A perspective view of the flexible pad is shown.

[0036] Figure 5 for Figure 1 The one-way valve body shown is a three-dimensional view after being cut off along the AA direction.

[0037] Figure 6 for Figure 5 The front view of the one-way valve plate along direction B is shown.

[0038] Figure 7This is a three-dimensional diagram of the integrated suction cup in Example 2 of the present application.

[0039] Figure 8 for Figure 7 Exploded view of the integrated suction cup shown.

[0040] Main component symbols

[0041] 100, one-way valve plate; 10, valve body; 10a, connecting groove; 10b, air guide groove; 101, first step groove; 102, second step groove; 10c, micropore; 10d, flow limiting groove; 20, flexible pad; 21, connecting part; 22, air guide part; 221, first plugging part; 221a, first surface; 221b, second surface; 2211b, first area; 2212b, second area; 2213b, third area; 221c, third surface; 222, flexible sheet; 222a, first arc surface; 223, second plugging part; 223a, second arc surface; 22a, negative pressure channel; 22b, first air guide groove; 22c, second air guide groove; 224, sealing part;

[0042] 200. Integrated suction cup; 210. Suction cup; 220. Vacuum chamber. DETAILED DESCRIPTION

[0043] The embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0044] It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "located on" another component, it may be directly located on the other component or there may be a central component at the same time. The terms "top", "bottom", "upper", "lower", "left", "right", "front", "back", and similar expressions used herein are for illustrative purposes only.

[0045] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0046] Embodiment 1

[0047] See also Figure 1-Figure 6 The first embodiment of the present application provides a one-way valve plate 100, whose two opposite sides are used to connect the suction cup 210 and the vacuum chamber 220, and is used to absorb the workpiece in a dusty environment, including:

[0048] The valve body 10 is provided with connecting grooves 10a in the transverse and longitudinal directions thereof, and is provided with air guide grooves 10b communicating with the connecting grooves 10a at intervals, the air guide grooves 10b include a first step groove 101 and a second step groove 102 arranged in a stacked manner, the bottom surface of the first step groove 101 is provided with a micropore 10c penetrating the valve body 10 and communicating with the vacuum chamber 220, and the diameter of the micropore 10c is 0.2 mm-0.5 mm;

[0049] The flexible pad 20 includes a connecting portion 21 and an air guide portion 22 disposed on the connecting portion 21. The connecting portion 21 is plugged in the connecting groove 10a. The air guide portion 22 includes a first plugging portion 221, a flexible sheet 222, and a second plugging portion 223. The first plugging portion 221 is plugged in the first step groove 101. The second plugging portion 223 is plugged in the second step groove 102 and abuts against the suction cup 210 so that the suction cup 210 faces the micropore 10c. In the vertical direction, the flexible sheet 222 is located above the micropore 10c and forms a negative pressure channel 22a with the bottom surface of the first step groove 101.

[0050] Before the one-way valve plate 100 absorbs the workpiece, if the vacuum chamber 220 is opened by mistake, the flexible sheet 222 squeezes and blocks the micropores 10c to prevent dust from entering.

[0051] When the one-way valve plate 100 is used normally, the one-way valve plate 100 contacts the workpiece first, and then the vacuum chamber 220 is opened, and the air pressure in the vacuum chamber 220 is connected to the air pressure in the suction cup 210, thereby reducing the air pressure in the suction cup 210 and adsorbing the workpiece.

[0052] When the one-way valve plate 100 is cleaning dust, the vacuum chamber 220 blows air toward the micropores 10c to blow open the flexible sheet 222 to blow out the dust.

[0053] It should be noted that the arrangement of the connection groove 10a and the air guide groove 10b enables the valve plate to be effectively connected to the flexible pad 20. Specifically, the connection groove 10a provides physical support and sealing, while the air guide groove 10b ensures that air can flow from the vacuum chamber 220 to the suction cup 210 or vice versa, which is used to create and release the vacuum adsorption state. Preferably, the flexible pad 20 is a flexible material, such as rubber, etc., and the connection between the flexible pad 20 and the valve body 10 is achieved by interference squeezing the flexible pad 20 into the connection groove 10a and the air guide groove 10b.

[0054] Furthermore, the air guide groove 10b includes a first step groove 101 and a second step groove 102 stacked together, and a micropore 10c is provided on the bottom surface of the first step groove 101, and the diameter of the micropore 10c (=0.2mm-0.5mm) allows fine air flow, which is used to prevent dust from passing through. Preferably, the diameter of the micropore 10 is 0.3mm.

[0055] Furthermore, the air guide portion 22 includes a first plugging portion 221, a flexible sheet 222 and a second plugging portion 223. The above scheme ensures that when adsorption is required, the vacuum can be effectively transferred from the vacuum chamber 220 to the suction cup 210 through the micropores 10c, and the micropores 10c are blocked when adsorption is not required to prevent dust from invading. In a specific embodiment, the first plugging portion 221, the flexible sheet 222 and the second plugging portion 223 are integrally formed, and the first plugging portion 221, the flexible sheet 222 and the second plugging portion 223 are rubber. By plugging the first plugging portion 221 in the first step groove 101 and the second plugging portion 223 in the second step groove 102, the stability of the connection between the air guide portion 22 and the valve body 10 is ensured. When the flexible pad 20 is damaged, the flexible pad 20 can be removed from the valve body 10 as a whole for replacement, thereby ensuring the convenience of replacing the one-way valve plate 100.

[0056] It should be noted that the diameter of visible dust usually refers to the size of dust particles visible to the naked eye. The diameter of dust particles visible to the naked eye is about 40 microns to 50 microns or more. Dust with a particle size smaller than the above range is usually difficult to see directly and requires the use of a microscope or other magnifying equipment to observe. Therefore, when dealing with PCB board adsorption in a dusty environment, considering that the diameter of the micropore 10c is designed to be between 0.2mm-0.5mm (200 microns to 500 microns), which is much larger than the diameter of dust particles visible to the naked eye, it is beneficial to prevent most dust particles from entering the vacuum system while allowing air circulation to achieve effective adsorption and cleaning functions.

[0057] Furthermore, in the manufacture of the integrated suction cup 210, the microholes 10c are generally punched on the valve body 10 by fine drill bit drilling, ultrasonic drilling, laser drilling, micro jet drilling, etc., which are difficult to operate. When dust is blocked in the microholes 10c, it is often difficult to clean them. In order to facilitate the vacuum chamber 220 to charge the suction cup 210, the diameter of the microholes 10c is set between 0.2mm and 0.5mm to ensure normal inflation, thereby achieving dust cleaning of the suction cup 210.

[0058] Furthermore, the present application provides a micropore 10c of 0.2 mm to 0.5 mm on the first step groove 101, and the flexible sheet 222 is located above the micropore 10c before use, and forms a negative pressure channel 22a between the first step groove 101, thereby forming a negative pressure channel 22a between the one-way valve plate 100 and the integrated suction cup 210.

[0059] When the one-way valve plate 100 is in use, the flexible sheet 222 can first stop the dust above. If the one-way valve plate 100 accidentally touches and opens the negative pressure of the vacuum chamber 220 before adsorbing the workpiece, since the suction cup 210 is connected to the atmosphere, the air pressure in the inner cavity of the suction cup 210 is equal to the atmospheric pressure. Therefore, when the air pressure in the vacuum chamber 220 is less than the atmospheric pressure, the atmospheric pressure squeezes the flexible sheet 222 to block the micropore 10c, thereby preventing the lateral entry of dust. After the one-way valve plate 100 is used, blowing air into the micropore 10c through the vacuum chamber 220 can blow open the flexible sheet 222 and blow out the dust.

[0060] Specifically, when the one-way valve plate 100 is in normal use, the flexible sheet 222 is arranged above the micropore 10c so that visible dust in the air can be stopped on the flexible sheet 222, so that the dust can only fall on both sides of the flexible sheet 222, and there is a certain distance between the dust falling on both sides of the flexible sheet 222 and the micropore 10c, and the dust falling on both sides of the flexible sheet 222 falls into the flexible pad 20. However, there is a lack of airflow or other driving force in the flexible pad 20, so it is difficult for dust to enter the micropore 10c through the negative pressure channel 22a. When the use environment is a dusty environment, the negative pressure of the vacuum chamber 220 is turned on to adsorb the flexible sheet 222 and block the micropore 10c, thereby preventing the lateral entry of dust, which better guarantees the problem of dust entering the micropore 10c.

[0061] Furthermore, the existing vacuum suction cup 210 or the corresponding logic valve opens or closes the vacuum chamber 220 by directly opening and closing. When opened in advance in a dusty environment, dust will be adsorbed into the vacuum chamber 220 or the micropore 10c through the suction cup 210, thereby causing the micropore 10c to be blocked. In addition, the existing vacuum suction cup 210 often needs to contact the workpiece first, and then open the vacuum chamber 220 before it can adsorb the workpiece. When the workpiece has a porous structure, it directly leads to the problem of failure of a single suction cup 210, thereby connecting with the atmosphere and adsorbing dust in the atmosphere. However, if the present application accidentally opens the vacuum chamber 220 before contacting the workpiece, at this time, the flexible sheet 222 blocks the micropore 10c, and the dust in the air cannot pass through the suction cup 210 to block the micropore 10c. When the workpiece has a porous structure, when the hole is connected to the inner cavity of the suction cup 210, no pressure change can be generated, thereby forcing the flexible sheet 222 to open. The vacuum is turned on only when the suction cup 210 in contact with the workpiece has no holes. At this time, the pressure of the inner cavity of the suction cup 210 is consistent with that of the vacuum cavity 220, thereby forming a vacuum environment to adsorb the workpiece, avoiding the problem of dust entering when not adsorbed.

[0062] See also Figure 3-Figure 6 In a specific embodiment, before the one-way valve plate 100 adsorbs the workpiece, the depth of the negative pressure channel 22a is equal to the diameter of the micropore 10c.

[0063] It should be noted that by setting the depth of the negative pressure channel 22a to be equal to the diameter of the micropore 10c, most of the dust larger than 0.2 mm-0.5 is prevented from entering laterally.

[0064] See also Figure 4-Figure 6 In a specific embodiment, the first plugging portion 221 includes a first surface 221a, a second surface 221b and a third surface 221c which are arranged in sequence, and the first surface 221a is arranged opposite to the third surface 221c;

[0065] The second plugging portion is disposed around the first surface 221a to the third surface 221c, and surrounds and forms a first air guide groove 22b10b directly facing the micro hole 10c;

[0066] The flexible sheet 222 extends outward from the second surface 221 b , and when viewed in the vertical direction, the flexible sheet 222 covers the microhole 10 c .

[0067] It should be noted that the second filling portion is annularly arranged from the first surface 221a to the third surface 221c to create an air guide groove 10b (first air guide groove 22b10b) surrounding the central micropore 10c, ensuring that the airflow can flow from the micropore 10c to or out of the suction cup 210 in an orderly manner. At the same time, this structure also helps to prevent dust from the external environment from entering the micropore 10c directly.

[0068] Furthermore, the flexible sheet 222 extends outward from the second surface 221 b , so that the flexible sheet 222 can cover the micropores 10 c when necessary to prevent dust from entering the micropores 10 c , and can flexibly move during the adsorption or release phase to allow air circulation.

[0069] Specifically, the flexible sheet 222 can block the micropores 10c in the non-adsorption state to prevent dust and other particles from entering. This shielding is dynamic, and the flexible sheet 222 can be moved away when vacuum adsorption starts to allow air to flow through the micropores 10c, thereby achieving adsorption; after adsorption stops, the flexible sheet 222 can cover the micropores 10c again to prevent dust from entering.

[0070] Furthermore, along the central axis of the flexible sheet 222 toward the second surface 221b, the width of the flexible sheet 222 gradually increases, so as to form a second air guide groove 22c10b ​​connected to the first air guide groove 22b10b and the negative pressure channel 22a, so as to allow the gas in the vacuum chamber 220 to flow into or out of the inner cavity of the suction cup 210.

[0071] In a specific embodiment, the gradual increase in the width of the flexible sheet 222 forms a second air guide groove 22c10b. The above scheme allows the gas flow from the vacuum chamber 220 to the inner cavity of the suction cup 210 to have a dedicated path, that is, the air flow path formed by the micropores 10c, the negative pressure channel 22a, the second air guide groove 22c10b ​​and the first air guide groove 22b10b, thereby promoting the orderly flow of the air flow, reducing the turbulence and instability in the air flow, and thus improving the stability and reliability of the adsorption process.

[0072] Furthermore, the second air guide groove 22c10b ​​is disposed on one side of the micropore 10c, so that when dust falls into the air guide portion 22, the dust will only fall into the second air guide groove 22c10b ​​on one side of the micropore 10c, thereby effectively preventing dust from falling in.

[0073] See also Figure 4 In a specific embodiment, the flexible sheet 222 has a first arc surface 222a facing the second air guide groove 22c10b, and the second plugging portion 223 has a second arc surface 223a facing the second air guide groove 22c10b;

[0074] The diameter of the first arc surface 222a is equal to the diameter of the second arc surface 223a, which is used to reduce the stress of the flexible sheet 222 and the second plugging portion when blowing air into the micropores 10c to clean the dust in the one-way valve plate 100.

[0075] It should be noted that the arc surface design helps to evenly distribute stress during the air blowing cleaning process when the gas is blown out through the micropores 10c to remove the blocked dust. This uniform stress distribution can reduce damage or premature wear of the flexible sheet 222 or the second plugging portion 223 caused by stress concentration.

[0076] Furthermore, the use of an arc surface design with equal diameter ensures that the airflow can evenly cover the entire area during the blowing process, thereby improving the cleaning efficiency and effect. The above solution makes the cleaning action more effective and can more thoroughly remove dust and impurities in the micropore 10c and its surrounding area.

[0077] Furthermore, by optimizing stress distribution and improving cleaning efficiency, this design also helps to extend the service life of the flexible sheet 222 and the second plugging portion 223. It reduces damage or excessive wear that may occur during the cleaning process and maintains the performance and reliability of the one-way valve plate 100.

[0078] See also Figure 4-Figure 6 In a specific embodiment, the second surface 221b includes a first area 2211b, a second area 2212b and a third area 2213b that are adjacently arranged;

[0079] The second filling portion 223 is disposed around the first area 2211b, the flexible sheet 222 is disposed on the second area 2212b, and the second area 2212b and the third area 2213b extend into and fill the first step groove 101;

[0080] The width of the second region 2212b is equal to the width of the third region 2213b and equal to the diameter of the micropore 10c, and when air is blown into the micropore 10c to clean the dust in the one-way valve plate 100, the flexible sheet 222 is deformed into the first region 2211b.

[0081] It should be noted that the second plugging portion 223 is disposed around the first area 2211b, so that the second plugging portion 223 surrounds the flexible sheet 222 and the micropore 10c, provides a stable structural foundation, and helps to seal and protect the surrounding area of ​​the micropore 10c.

[0082] The flexible sheet 222 is on the second region 2212b, so that the flexible sheet 222 is directly located above the micropore 10c, which facilitates the opening and closing operations of the micropore 10c during the adsorption and release processes.

[0083] The second area 2212b and the third area 2213b extend into and fill the first step groove 101, providing an additional sealing layer to ensure the sealing performance of the vacuum system. Their width is equal to the diameter of the micropore 10c. This design helps to accurately control the flow of air and optimize the deformation path of the flexible sheet 222.

[0084] Preferably, by setting the width of the second region 2212b, the third region 2213b and the diameter of the micropore 10c to be equal, when the corresponding product is manufactured, the negative pressure channel 22a can be equal to the diameter of the micropore 10c by setting a specific size mold, thereby reducing the manufacturing difficulty.

[0085] In summary, by making the depth of the negative pressure channel 22a equal to the diameter of the micropore 10c before the one-way valve plate 100 adsorbs the workpiece, the diameter of the negative pressure channel 22a is reduced, and dust is further prevented from entering through the negative pressure channel 22a before the flexible sheet 222 is adsorbed. Further, by setting the first area 2211b, the second area 2212b and the third area 2213b on the second surface 221b, and setting the flexible sheet 222 in the second area 2212b, and making the width of the second area 2212b equal to the width of the third area 2213b equal to the diameter of the micropore 10c, the depth of the negative pressure channel 22a is equal to the diameter of the micropore 10c.

[0086] In summary, by providing the first arc surface 222a on the flexible sheet 222, providing the second arc surface 223a on the second plugging portion 223, and making the diameters of the first arc surface 222a and the second arc surface 223a equal, when the one-way valve body 10 is cleaned of dust, the flexible sheet 222 can be deformed from the second area 2212b to the first area 2211b, thereby facilitating the cleaning of dust on the one-way valve plate 100. Further, when the flexible sheet 222 is deformed, the first arc surface 222a and the second arc surface 223a can reduce the stress on the flexible sheet 222 caused by gas impact, thereby preventing the flexible sheet 222 from being damaged.

[0087] See also Figure 4 In a specific embodiment, the air guide portion 22 also includes a sealing portion 224, which is disposed between the first filling portion and the second filling portion, and is used for squeezing the sealing portion 224 between the connecting groove 10a and the air guide groove 10b when the flexible pad 20 is filled in the connecting groove 10a and the air guide groove 10b.

[0088] It should be noted that by providing a sealing portion 224 between the first filling portion and the second filling portion, a tight seal can be ensured between the connecting groove 10a and the air guide groove 10b, effectively preventing external air and dust from entering the vacuum system, while also maintaining a negative pressure state inside the system, which is crucial to the stability of the adsorption of the workpiece.

[0089] Furthermore, the squeezing effect of the sealing portion 224 takes effect when the flexible pad 20 is installed, and it optimizes the pressure distribution by squeezing between the connecting groove 10a and the air guide groove 10b, ensuring the consistency and durability of the sealing effect. This uniform pressure distribution helps prevent air leakage caused by poor sealing.

[0090] In a specific embodiment, the sealing portion 224 is integrally formed with the first filling portion 221 , the flexible sheet 222 and the second filling portion 223 .

[0091] In a specific embodiment, the valve body 10 is further provided with a plurality of rows of flow limiting grooves 10d on the side facing away from the flexible pad 20;

[0092] Each row of the limiting grooves 10d is respectively connected to a plurality of the micropores 10c, so that when air is blown into each row of the limiting grooves 10d, the gas in the limiting grooves 10d is evenly distributed into each of the micropores 10c.

[0093] It should be noted that the scheme that each row of flow limiting grooves 10d is connected to multiple micropores 10c ensures that when blowing air into the flow limiting grooves 10d, the gas can be evenly distributed to each micropore 10c. Furthermore, by ensuring that each micropore 10c can receive sufficient gas flow, the above scheme helps to improve the adsorption efficiency and response speed of the entire system.

[0094] Furthermore, the plurality of rows of the limiting grooves 10 d are connected to the vacuum chamber 220 , so that when blowing air into the vacuum chamber 220 , the gas in the vacuum chamber 220 is evenly distributed to each of the limiting grooves 10 d .

[0095] It should be noted that the vacuum chamber 220 is directly connected to multiple rows of flow limiting grooves 10d, so that when gas is blown into the vacuum chamber 220, the gas can be evenly distributed to each row of flow limiting grooves 10d, thereby further ensuring that the gas flow from each flow limiting groove 10d to the connected micropores 10c is also uniform.

[0096] Embodiment 2

[0097] The second embodiment provides an integrated suction cup 200, including:

[0098] The one-way valve plate 100 as described in the first embodiment;

[0099] A plurality of suction cups 210, each of the suction cups 210 is held against the air guide portion 22 and disposed facing the micro hole 10c;

[0100] The vacuum chamber 220 is disposed on a side of the flexible pad 20 facing away from the suction cup 210 and is connected to the micropores 10c to form negative pressure or ventilation in the micropores 10c.

[0101] It should be noted that the integrated suction cup 210 in this second embodiment

[0102] 200 applies the one-way valve plate 100 in the first embodiment. Therefore, the second embodiment includes all the beneficial effects of the one-way valve plate 100 in the first embodiment, which will not be described again.

[0103] It should be noted that the suction cup 210 in the second embodiment is a suction cup 210 with a hole, and the vacuum chamber 220 is a rectangular structure, in the middle of which a cavity connected to an external vacuum pumping device is provided to form a vacuum environment in the cavity.

[0104] The above is only an implementation method of the present application. It should be pointed out that a person skilled in the art can make improvements without departing from the inventive concept of the present application, but these improvements are within the scope of protection of the present application.

Claims

1. A one-way valve plate, whose two opposite sides are used to connect the suction cup and the vacuum chamber, and is used to absorb the workpiece in a dusty environment, characterized in that: include: The valve body is provided with connecting grooves in the transverse and longitudinal directions thereof, and is provided with air guide grooves communicating with the connecting grooves at intervals, the air guide grooves include a first step groove and a second step groove arranged in a stacked manner, a micropore penetrating the valve body and communicating with the vacuum chamber is provided on the bottom surface of the first step groove, and the diameter of the micropore is 0.2 mm-0.5 mm; A flexible pad, comprising a connecting portion and an air guide portion provided on the connecting portion, wherein the connecting portion is plugged in the connecting groove, and the air guide portion comprises a first plugging portion, a flexible sheet, and a second plugging portion, wherein the first plugging portion is plugged in the first step groove, and the second plugging portion is plugged in the second step groove and abuts against the suction cup so that the suction cup faces the micropore, and along the vertical direction, the flexible sheet is located above the micropore and forms a negative pressure channel with the bottom surface of the first step groove; Before the one-way valve plate adsorbs the workpiece, the vacuum chamber is opened to adsorb the flexible sheet, and the flexible sheet squeezes and blocks the micropores to prevent dust from entering; when the one-way valve plate adsorbs the workpiece and discharges the air in the suction cup, the flexible sheet is reset and releases the negative pressure channel to connect the suction cup with the vacuum chamber; when the one-way valve plate cleans the dust, the vacuum chamber blows air into the micropores to blow open the flexible sheet to blow out the dust; before the one-way valve plate adsorbs the workpiece, the depth of the negative pressure channel is equal to the diameter of the micropores.

2. The one-way valve plate according to claim 1, characterized in that: The first plugging portion includes a first surface, a second surface and a third surface which are arranged in sequence, and the first surface is arranged opposite to the third surface; The second plugging portion is disposed around the first surface toward the third surface and surrounds to form a first air guide groove facing the micropore; The flexible sheet extends outward from the second surface, and when viewed along the vertical direction, the flexible sheet covers the microholes.

3. The one-way valve plate according to claim 2, characterized in that: Along the central axis of the flexible sheet toward the second surface, the width of the flexible sheet gradually increases to form a second air guide groove connected to the first air guide groove and the negative pressure channel to allow the gas in the vacuum chamber to flow into or out of the suction cup cavity.

4. The one-way valve plate according to claim 3, characterized in that: The flexible sheet has a first arc surface facing the second air guide groove, and the second plugging portion has a second arc surface facing the second air guide groove; The diameter of the first arc surface is equal to the diameter of the second arc surface, which is used to reduce the stress of the flexible sheet and the second plugging portion when blowing air into the micropores to clean the dust in the one-way valve plate.

5. The one-way valve plate according to claim 2, characterized in that: The second surface includes a first area, a second area and a third area that are adjacently arranged; The second filling portion is disposed around the first area, the flexible sheet is disposed on the second area, and the second area and the third area extend into and fill the first step groove; The width of the second region is equal to the width of the third region, which is equal to the diameter of the micropore, and when air is blown into the micropore to clean the dust in the one-way valve plate, the flexible sheet is deformed into the first region.

6. The one-way valve plate according to claim 1, characterized in that: The air guide portion further includes a sealing portion, which is disposed between the first filling portion and the second filling portion and is used for being squeezed between the connecting groove and the air guide groove when the flexible pad is filled in the connecting groove and the air guide groove.

7. The one-way valve plate according to claim 1, characterized in that: The valve body also has multiple rows of flow limiting grooves on the side facing away from the flexible pad; Each row of the limiting grooves is respectively connected to a plurality of the micropores, so that when air is blown toward each row of the limiting grooves, the gas in the limiting grooves is evenly distributed into each of the micropores.

8. The one-way valve plate according to claim 7, characterized in that: The plurality of rows of flow limiting grooves are all connected to the vacuum chamber, and are used to evenly distribute the gas in the vacuum chamber to each of the flow limiting grooves when blowing air into the vacuum chamber.

9. An integrated suction cup, characterized in that: include: The one-way valve plate according to any one of claims 1 to 8; A plurality of suction cups, each of which is held against the air guide portion and disposed directly opposite to the microhole; The vacuum chamber is arranged on a side of the flexible pad facing away from the suction cup and is connected to the micropores to form negative pressure or ventilation in the micropores.

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