A Bernoulli suction cup

Abstract

The present invention discloses a Bernoulli suction cup, characterized in that: a plurality of mounting holes are evenly distributed along the circumferential direction on the bottom surface of the suction cup body, an edge PEEK gasket is installed in the mounting hole on the bottom surface of the suction cup body, a quick connector is installed in the center hole on the top surface of the suction cup body, a left screw is installed in the left mounting hole on the top surface of the suction cup body, a left nut is installed at the top of the left screw, a right screw is installed in the right mounting hole on the top surface of the suction cup body, a right nut is installed at the top of the right screw, a right spring is installed on the right screw, a suction cup core is installed in the center groove on the bottom surface of the suction cup body, and a center PEEK gasket is installed in the center hole on the bottom surface of the suction cup core. The present invention has a simple structure, stable and reliable operation, greatly reduces the volume of the suction cup, has extremely low requirements for installation space, has two circles of air outlets inside and outside, and the air outlet is more uniform, can produce a larger and more uniform negative pressure area, is not easy to deform, and has a greatly increased service life.

Description

Technical Field

[0001] The invention belongs to the technical field of suction cups, and in particular relates to a Bernoulli suction cup. Background Art

[0002] The Bernoulli suction cup is suitable for transporting thin, extremely precise and fragile workpieces. When the suction cup is connected to compressed air using the Bernoulli principle, a uniform, thin and strong airflow is generated on the working surface of the suction cup. At this time, the gas flow rate on the upper surface of the workpiece is greater than the gas flow rate on its lower part. Utilizing the principle that the faster the fluid speed, the lower the pressure, a pressure difference is generated on the upper and lower sides of the workpiece, thereby forming an upward lifting force at the bottom of the workpiece, causing the workpiece to be adsorbed on the bottom of the suction cup body.

[0003] The existing Bernoulli suction cup has the following problems: (1) The existing Bernoulli suction cup has only one circle of air outlet holes, and there is no air flow in the middle part. The suction force generated by the pressure in the middle part is small, and it is impossible to form a uniform adsorption effect, which causes displacement and sliding between the workpiece and the suction cup. In severe cases, it may cause the workpiece to fall; (2) The existing Bernoulli suction cup is generally installed with a suction cup cover, which is large in size. When the installation space is small, the suction cup is difficult to install; (3) The suction cup gasket of the existing suction cup is generally made of EVA sponge, which has poor temperature tolerance and is prone to deformation after long-term use. It is also easy to get dirty and contaminate workpieces with high cleanliness requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a Bernoulli suction cup in response to the above-mentioned deficiencies in the prior art. The cup has a simple structure, stable and reliable operation, greatly reduces the volume of the suction cup, and has extremely low requirements for installation space. The inner and outer circles of air outlet holes make the air outlet more uniform, and can produce a larger and more uniform negative pressure area. The cup is not easily deformed, and its service life is greatly increased.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is:

[0006] A Bernoulli suction cup, characterized in that it includes a suction cup body, an edge PEEK gasket, a center PEEK gasket, a quick connector, a right nut, a right spring, a right screw, an O-ring, a suction cup core, a left screw, a left spring and a left nut, wherein a plurality of mounting holes are evenly distributed along the circumferential direction on the bottom surface of the suction cup body, the edge PEEK gasket is mounted in the mounting hole on the bottom surface of the suction cup body, the quick connector is mounted in the center hole on the top surface of the suction cup body, the left screw is mounted in the left mounting hole on the top surface of the suction cup body, the left nut is mounted on the top of the left screw, and the left spring is mounted on the left The screw rod is on the right side and the two ends of the left spring are respectively pressed against the suction cup body and the left nut. The right screw rod is installed in the right mounting hole on the top surface of the suction cup body. The right nut is installed on the top of the right screw rod. The right spring is installed on the right screw rod and the two ends of the right spring are respectively pressed against the suction cup body and the right nut. An annular groove is provided on the top surface of the suction cup core and the suction cup core is installed in the central groove on the bottom surface of the suction cup body. The O-ring is installed in the annular groove on the top surface of the suction cup core and the O-ring is pressed against the bottom surface of the central groove on the bottom surface of the suction cup body. The central PEEK gasket is installed in the central hole on the bottom surface of the suction cup core.

[0007] An annular groove is provided on the bottom surface of the suction cup core.

[0008] A plurality of radial holes are evenly distributed on the outer cylindrical surface of the suction cup core along the circumferential direction, and the radial holes are communicated with the central hole of the suction cup core.

[0009] The above-mentioned quick connector adopts a straight pipe connector or an elbow pipe connector.

[0010] A sealant is installed between the quick connector and the center hole on the top surface of the sucker body.

[0011] The present invention consists of a suction cup body and a suction cup core. Gaskets are installed on the middle suction cup core and the edge of the suction cup body. The gaskets are made of peek material, the central PEEK gasket has a larger area, and the edge PEEK gasket has a smaller area. The suction cup core air outlet consists of two circles of inner and outer air outlets, the inner and outer air outlets are interconnected, and compressed air can be discharged through the inner air outlet holes. The suction cup body and the suction cup core are each installed with a gasket made of PEEK material, which plays a role in isolating the workpiece. The suction cup does not need to add a suction cup cover. A left spring is installed on the left screw, and a right spring is installed on the right screw, which realizes axial displacement compensation when the suction cup is working, thereby facilitating the suction operation of the suction cup.

[0012] The advantages of the present invention are as follows: (1) the volume of the suction cup is greatly reduced, and the requirement for installation space is extremely low; (2) the two circles of air outlet holes in the inner and outer circles make the air outlet more uniform, and can produce a larger and more uniform negative pressure area; (3) the gasket made of PEEK material is more resistant to high temperatures and is suitable for grasping high-temperature workpieces; (4) it is not easy to deform, and the service life is greatly increased; (5) it is not easy to get dirty and contaminate the workpiece; (6) the area of ​​the middle gasket is larger, and the edge suction cups are distributed in a circular manner and have a smaller area, which can reduce the contact between the suction cup and the workpiece and is not easy to cause damage to the precision workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural isometric view of the present invention;

[0014] Figure 2 It is a structural front view of the present invention;

[0015] Figure 3 It is a left side view of the structure of the present invention;

[0016] Figure 4 It is a cross-sectional view of the AA structure of the present invention.

[0017] The figures are as follows: suction cup body 1, edge PEEK gasket 2, center PEEK gasket 3, quick connector 4, right nut 5, right spring 6, right screw 7, O-ring 8, suction cup core 9, left screw 10, left spring 11, left nut 12. DETAILED DESCRIPTION

[0018] The specific embodiments of the present invention are further described below with reference to the accompanying drawings:

[0019] A Bernoulli suction cup, characterized in that it includes a suction cup body 1, an edge PEEK gasket 2, a center PEEK gasket 3, a quick connector 4, a right nut 5, a right spring 6, a right screw 7, an O-ring 8, a suction cup core 9, a left screw 10, a left spring 11 and a left nut 12. The bottom surface of the suction cup body 1 is evenly distributed with a plurality of mounting holes along the circumferential direction. The edge PEEK gasket 2 is installed in the mounting hole on the bottom surface of the suction cup body 1, the quick connector 4 is installed in the center hole on the top surface of the suction cup body 1, the left screw 10 is installed in the left mounting hole on the top surface of the suction cup body 1, the left nut 12 is installed on the top of the left screw 10, and the left spring 11 is installed. On the left screw 10, the two ends of the left spring 11 are respectively pressed against the suction cup body 1 and the left nut 12. The right screw 7 is installed in the right mounting hole on the top surface of the suction cup body 1. The right nut 5 is installed on the top of the right screw 7. The right spring 6 is installed on the right screw 7 and the two ends of the right spring 6 are respectively pressed against the suction cup body 1 and the right nut 5. An annular groove is provided on the top surface of the suction cup core 9 and the suction cup core 9 is installed in the center groove on the bottom surface of the suction cup body 1. The O-ring 8 is installed in the annular groove on the top surface of the suction cup core 9 and the O-ring 8 is pressed against the bottom surface of the center groove on the bottom surface of the suction cup body 1. The center PEEK gasket 3 is installed in the center hole on the bottom surface of the suction cup core 9.

[0020] In the embodiment, an annular groove is provided on the bottom surface of the suction cup core 9 .

[0021] In the embodiment, a plurality of radial holes are evenly distributed along the circumferential direction on the outer cylindrical surface of the suction cup core 9 , and the radial holes are connected to the central hole of the suction cup core 9 .

[0022] In the embodiment, the quick connector 4 is a straight pipe connector or an elbow pipe connector.

[0023] In the embodiment, a sealant is installed between the quick connector 4 and the center hole on the top surface of the suction cup body 1 .

[0024] The present invention consists of a suction cup body 1 and a suction cup core 9. Gaskets are installed on the middle suction cup core 9 and the edge of the suction cup body 1. The gaskets are made of peek material, the central PEEK gasket 3 has a larger area, and the edge PEEK gasket 2 has a smaller area; the suction cup core 9 has an air outlet composed of two circles, inner and outer, which are interconnected, and compressed air can be discharged through the inner air outlet; the suction cup body 1 and the suction cup core 9 are each installed with a gasket made of PEEK material, which plays the role of isolating the workpiece; the suction cup does not need to add a suction cup cover; a left spring 11 is installed on the left screw 10, and a right spring 6 is installed on the right screw 7, which realizes axial displacement compensation when the suction cup is working, thereby facilitating the suction operation of the suction cup.

[0025] The above are merely preferred embodiments of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions based on the principles of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should be considered within the scope of protection of the present invention.

Claims

1. A Bernoulli suction cup, characterized in that: The invention comprises a suction cup body (1), an edge PEEK gasket (2), a center PEEK gasket (3), a quick connector (4), a right nut (5), a right spring (6), a right screw (7), an O-ring (8), a suction cup core (9), a left screw (10), a left spring (11) and a left nut (12). The bottom surface of the suction cup body (1) is provided with a plurality of mounting holes evenly distributed along the circumferential direction. The edge PEEK gasket (2) is mounted in the mounting hole on the bottom surface of the suction cup body (1). The quick connector (4) is mounted in the center hole on the top surface of the suction cup body (1). The left screw (10) is mounted in the left mounting hole on the top surface of the suction cup body (1). The left nut (12) is mounted on the top of the left screw (10). The left spring (11) is mounted on the left screw (10). ) and the two ends of the left spring (11) are respectively pressed against the suction cup body (1) and the left nut (12); the right screw (7) is installed in the right mounting hole on the top surface of the suction cup body (1); the right nut (5) is installed at the top of the right screw (7); the right spring (6) is installed on the right screw (7) and the two ends of the right spring (6) are respectively pressed against the suction cup body (1) and the right nut (5); an annular groove is provided on the top surface of the suction cup core (9) and the suction cup core (9) is installed in the central groove on the bottom surface of the suction cup body (1); the O-ring (8) is installed in the annular groove on the top surface of the suction cup core (9) and the O-ring (8) is pressed against the bottom surface of the central groove on the bottom surface of the suction cup body (1); and the central PEEK gasket (3) is installed in the central hole on the bottom surface of the suction cup core (9).

2. A Bernoulli suction cup according to claim 1, characterized in that: An annular groove is provided on the bottom surface of the suction cup core (9).

3. A Bernoulli suction cup according to claim 1, characterized in that: A plurality of radial holes are evenly distributed on the outer cylindrical surface of the suction cup core (9) along the circumferential direction, and the radial holes are communicated with the central hole of the suction cup core (9).

4. A Bernoulli suction cup according to claim 1, characterized in that: The quick connector (4) is a straight pipe connector or an elbow pipe connector.

5. A Bernoulli suction cup according to claim 1, characterized in that: A sealant is installed between the quick connector (4) and the center hole on the top surface of the sucker body (1).

Images