CN220041828U - Bernoulli sucker and carrying device - Google Patents

Abstract

The utility model discloses a Bernoulli sucker and a carrying device, wherein the Bernoulli sucker comprises a sucker body, a sucker core and a back blowing mechanism, the sucker body is provided with an adsorption surface for adsorbing a workpiece, the sucker body is provided with a first through hole and a second through hole which penetrate through the adsorption surface at intervals, the first through hole extends from the center of the sucker body to the center direction far away from the sucker body to the peripheral side surface penetrating through the sucker body, the sucker core is arranged on one side of the sucker body, which is far away from the adsorption surface, the sucker core is provided with an adsorption channel communicated with the first through hole, the adsorption channel is used for introducing first gas so as to form adsorption force for adsorbing the workpiece on the adsorption surface at the first through hole, the back blowing mechanism is provided with a back blowing hole communicated with the second through hole, and the back blowing hole is used for introducing second gas so as to form back blowing pressure for enabling the workpiece to be separated from the adsorption surface at the second through hole. Therefore, the release time of the Bernoulli sucker to the workpiece can be shortened, and the release efficiency of the sucker to the workpiece can be improved, so that the production efficiency can be improved.

Description

Bernoulli sucker and carrying device

Technical Field

The utility model relates to the field of solar cell manufacturing, in particular to a Bernoulli sucker and a conveying device.

Background

In the manufacturing process of solar cells, a combination of a sucker and a manipulator is generally adopted, so that a cell is adsorbed on the sucker and is conveyed among a plurality of stations through the manipulator, in order to ensure the conveying reliability of the cell, the sucker for conveying the cell is mostly a Bernoulli sucker at present, for example, patent with publication No. CN207497885U discloses a photovoltaic Bernoulli sucker, when the sucker is connected with compressed gas by utilizing the Bernoulli principle, a uniform and thin strong gas flow is generated on a working surface of the sucker, at the moment, the gas flow rate of the upper surface of a workpiece (such as a cell, a silicon wafer and the like) is larger than the gas flow rate of the lower part of the workpiece, and the pressure difference is generated on the upper side and the lower side of the workpiece by utilizing the principle that the faster fluid speed is the smaller, so that upward lifting force can be formed at the bottom of the workpiece, and the workpiece is adsorbed at the bottom of the sucker body. When the manipulator drives the workpiece to move to the corresponding position, the compressed gas stops flowing, and the workpiece falls off from the bottom of the sucker body, so that the whole conveying process of the workpiece is completed.

However, with this way of releasing the workpiece, the suction cup still maintains the suction effect on the workpiece for a period of time after the supply of the compressed air is stopped, which results in a longer continuous suction time of the suction cup on the workpiece, and is unfavorable for the rapid release of the workpiece.

Disclosure of Invention

The embodiment of the utility model discloses a Bernoulli sucker and a carrying device, which can shorten the release time of the Bernoulli sucker to a workpiece and improve the release efficiency of the Bernoulli sucker to the workpiece, thereby being beneficial to improving the production efficiency.

To achieve the above object, in a first aspect, the present utility model discloses a bernoulli chuck, comprising:

the sucker comprises a sucker body, wherein the sucker body is provided with an adsorption surface for adsorbing a workpiece, a first through hole and a second through hole which penetrate through the adsorption surface are arranged at intervals, and the first through hole extends from the center of the sucker body to the direction away from the center of the sucker body to the side surface of the periphery penetrating through the sucker body;

the sucking disc core is arranged on one side of the sucking disc body, which is away from the adsorption surface, and is provided with an adsorption channel communicated with the first through hole, and the adsorption channel is used for introducing first gas so as to form an adsorption force for adsorbing the workpiece on the adsorption surface at the first through hole; and

the back blowing mechanism is provided with a back blowing hole communicated with the second through hole, and the back blowing hole is used for introducing second gas so as to form back blowing pressure for enabling the workpiece to be separated from the adsorption surface at the second through hole.

As an alternative embodiment, in the embodiment of the first aspect of the present utility model, the center line of the second through hole is perpendicular to the suction surface, and/or the blowback mechanism and the suction cup core are located on the same side of the suction cup body, and the center line of the blowback hole and the center line of the second through hole are disposed in parallel.

As an optional implementation manner, in an embodiment of the first aspect of the present utility model, the bernoulli chuck further includes a control valve, where the control valve is provided with an air inlet, a first air outlet and a second air outlet, the air inlet is used for being connected to a gas device pipeline, the first air outlet pipeline is connected to the adsorption channel, the second air outlet pipeline is connected to the blowback hole, and the control valve is used for opening the first air outlet to control the adsorption channel to be in communication with the air inlet, or opening the second air outlet to control the blowback hole to be in communication with the air inlet;

when the control valve is used for opening the first air outlet, the second air outlet is blocked by the control valve to be in a closed state, and the adsorption channel is filled with the first gas so that the Bernoulli sucker adsorbs the workpiece;

when the control valve is used for opening the second air outlet, the first air outlet is blocked by the control valve and is in a closed state, and the back blowing hole is filled with the second air, so that the Bernoulli sucker releases the workpiece.

In an optional implementation manner, in an embodiment of the first aspect of the present utility model, the number of the second through holes is a plurality of, the plurality of second through holes are uniformly distributed in the sucker body, the number of the blowback holes is a plurality of, and the plurality of blowback holes are in one-to-one correspondence with the plurality of second through holes.

In an optional implementation manner, in an embodiment of the first aspect of the present utility model, the bernoulli chuck further includes a control valve, where the control valve includes a plurality of air outlets, a plurality of blowback holes are in one-to-one correspondence with the plurality of air outlets, and the plurality of blowback holes are respectively connected to the corresponding air outlets through pipes.

As an optional implementation manner, in an embodiment of the first aspect of the present utility model, a projection of the suction cup core on the suction cup body is located at a center of the suction cup body, and the plurality of second through holes are uniformly distributed on an outer periphery of the suction cup core.

In an alternative embodiment, in an embodiment of the first aspect of the present utility model, the blowback mechanism is connected to the suction cup core, and the blowback mechanism includes a first surface and a second surface opposite to each other, where the first surface faces the suction surface, and a protrusion is protruding from the first surface, the blowback hole penetrates through the first surface and the second surface, and the blowback hole penetrates through the protrusion.

As an alternative embodiment, in an embodiment of the first aspect of the present utility model, the blowback mechanism is detachably connected to the suction cup core.

In an optional embodiment, in an embodiment of the first aspect of the present utility model, the material of the blowback mechanism is aluminum alloy, plastic steel, polyvinyl chloride, thermoplastic rubber, or the like.

In a second aspect, the utility model discloses a handling device comprising a robot and a bernoulli chuck as described in the first aspect above, the bernoulli chuck being coupled to the robot.

Compared with the prior art, the utility model has the beneficial effects that:

according to the Bernoulli sucker and the carrying device, the Bernoulli sucker comprises a sucker body, a sucker core and a blowback mechanism, a first through hole and a second through hole penetrating through an adsorption surface are formed in the sucker body at intervals, the first through hole extends to the peripheral side surface penetrating through the sucker body from the center direction far away from the sucker body along the center of the sucker body, the sucker core is arranged on one side, away from the adsorption surface, of the sucker body, the sucker core is provided with an adsorption channel communicated with the first through hole, the adsorption channel is used for introducing first gas so that the first gas can flow to the adsorption surface through the adsorption channel and the first through hole in sequence, the sucker body can form adsorption force for adsorbing a workpiece on the adsorption surface at the first through hole by utilizing the Bernoulli principle, the blowback mechanism is provided with a blowback hole communicated with the second through hole, the blowback hole is used for introducing second pressure gas so that the second gas can flow to the adsorption surface through the blowback hole sequentially, and the blowback pressure, which is formed at the second through the blowback hole and is directed to the sucker body at the position, so that the blowback pressure of the sucker core faces the sucker body, and the adsorption surface is overcome, and the adsorption force of the workpiece is adsorbed on the adsorption surface. In this way, compared with the design that the suction force of the suction surface to the workpiece is stopped and waited for to disappear so as to separate the workpiece from the suction surface, the utility model can shorten the time for the sucking disc to keep the suction action to the workpiece after the first gas stops flowing through by applying a back blowing pressure with opposite suction force direction to the workpiece, so that the workpiece can be quickly separated from the suction surface. Therefore, by adopting the Bernoulli sucker and the carrying device provided by the utility model, the release time of the Bernoulli sucker to the workpiece can be shortened, and the release efficiency of the Bernoulli sucker to the workpiece can be improved, so that the production efficiency can be improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a handling device according to an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a Bernoulli chuck in accordance with an embodiment of the present utility model;

FIG. 3 is a front view of a Bernoulli chuck in accordance with an embodiment of the present utility model;

fig. 4 is a schematic perspective view of a sucker body, a sucker core and a blowback mechanism in a combined state according to an embodiment of the present utility model;

FIG. 5 is a top view of the chuck body, chuck core and blowback mechanism in a combined state according to an embodiment of the present utility model;

FIG. 6 is a bottom view of the chuck body, chuck core and blowback mechanism in a combined state according to an embodiment of the present utility model;

FIG. 7 is a schematic perspective view of a blowback mechanism according to an embodiment of the present utility model;

fig. 8 is a front view of a blowback mechanism according to an embodiment of the present utility model.

The main reference numerals illustrate:

200-handling device; 101-a manipulator;

a 100-Bernoulli chuck;

10-sucking disc body; 10 a-an adsorption surface; 11-a first through hole; 12-a second through hole;

20-sucking disc core; 21-adsorption channels;

30-a back-blowing mechanism; 30 a-a first side; 30 b-a second side; 31-back blowing holes; 32-a boss;

40-a control valve; 41-air inlet; 42-a first air outlet; 43-second air outlet.

Detailed Description

The embodiment of the utility model discloses a Bernoulli chuck, which can be applied to a conveying device to convey a workpiece adsorbed on the Bernoulli chuck to a specified position. The carrying device comprises a Bernoulli sucker and a manipulator, wherein the Bernoulli sucker is connected to the manipulator, and the manipulator is used for driving the Bernoulli sucker to move so as to carry a workpiece adsorbed on the Bernoulli sucker to a designated position.

In order to facilitate understanding of the structure of the handling device and the bernoulli chuck, the handling device and the bernoulli chuck will be further described with reference to the embodiments and the drawings.

Referring to fig. 1 to 3, the embodiment of the utility model discloses a carrying device 200, which includes a bernoulli chuck 100 and a manipulator 101, wherein the bernoulli chuck 100 is connected to the manipulator 101, and the manipulator 101 is used for driving the bernoulli chuck 100 to move so as to carry a workpiece adsorbed on the bernoulli chuck 100 to a designated position. For example, the handling device 200 may be an industrial robot located between a first station and a second station on a manufacturing line, and when a workpiece is processed at the first station, the robot arm 101 drives the bernoulli chuck 100 to move to the first station and adsorbs the processed workpiece, and the robot arm 101 drives the bernoulli chuck 100 to move to the second station and releases the workpiece from the bernoulli chuck to the second station, so that the workpiece can be processed at the second station. For another example, the handling device 200 may be a blanking robot of a manufacturing line, when a workpiece is processed at a processing station, the mechanical arm 101 drives the bernoulli chuck 100 to move to the processing station and adsorbs the processed workpiece, and the mechanical arm 101 drives the bernoulli chuck 100 to drive the workpiece to move to a blanking table and release the workpiece from the bernoulli chuck to the blanking table, so that the workpiece is blanked from the manufacturing line.

Specifically, the bernoulli chuck 100 includes a chuck body 10, a chuck core 20, and a blowback mechanism 30, the chuck body 10 having a suction surface 10a for sucking a workpiece, the chuck body 10 being provided with first through holes 11 and second through holes 12 penetrating the suction surface 10a at intervals, the first through holes 11 extending from a center along the chuck body 10 to a center direction away from the chuck body 10 to an outer peripheral side surface penetrating the chuck body 10. The sucking disc core 20 is arranged on one side of the sucking disc body 10, which is away from the adsorption surface 10a, the sucking disc core 20 is provided with an adsorption channel 21 communicated with the first through hole 11, and the adsorption channel 21 is used for introducing first gas so as to form an adsorption force for adsorbing a workpiece on the adsorption surface 10a at the first through hole 11. The blowback mechanism 30 is provided with a blowback hole 31 communicating with the second through hole 12, the blowback hole 31 being for introducing the second gas to form a blowback pressure for releasing the work from the suction surface 10a at the second through hole 12.

According to the carrying device 200 and the Bernoulli chuck 100 provided by the utility model, the first through holes 11 and the second through holes 12 penetrating through the adsorption surface 10a are arranged at intervals on the chuck body 10, the first through holes 11 extend from the center of the chuck body 10 to the outer peripheral side surface penetrating through the chuck body 10 in the direction away from the center of the chuck body 10, the chuck core 20 is arranged on one side of the chuck body 10 away from the adsorption surface 10a, the chuck core 20 is provided with the adsorption channel 21 communicated with the first through holes 11, the adsorption channel 21 is used for introducing first gas so that the first gas can flow to the adsorption surface 10a through the adsorption channel 21 and the first through holes 11 in sequence, and the adsorption force for adsorbing a workpiece on the adsorption surface 10a is formed at the first through holes 11 by the chuck body 10 by utilizing the Bernoulli principle, so that the workpiece is adsorbed on the adsorption surface 10a. The blowback mechanism 30 is provided with a blowback hole 31 communicating with the second through hole 12, the blowback hole 31 is used for introducing second pressure gas so that the second gas flows to the adsorption surface 10a through the blowback hole 31 and the second through hole 12 in sequence, so that blowback pressure directed from the chuck core 20 to the chuck body 10 is formed at the second through hole 12, thereby overcoming the adsorption force of the adsorption surface 10a to the workpiece, and enabling the workpiece to be separated from the adsorption surface 10a. In this way, compared with the design that the suction force of the suction surface 10a to the workpiece is stopped and waited for to disappear, so that the workpiece is separated from the suction surface 10a, the utility model can shorten the time for the sucking disc to keep the suction action to the workpiece after the first gas stops flowing through by applying a back blowing pressure opposite to the suction force to the workpiece, so that the workpiece can be separated from the suction surface 10a quickly. Therefore, by adopting the Bernoulli chuck 100 provided by the utility model, the release time of the Bernoulli chuck 100 to a workpiece can be shortened, and the release efficiency of the Bernoulli chuck 100 to the workpiece can be improved, so that the production efficiency can be improved.

Alternatively, the workpiece may be a material with smaller thickness, or a plate with precise structure, or a sheet with weaker structure, or the like, and specifically may be a solar cell, a silicon wafer, a glass sheet, a circuit board, a breathable workpiece, a mesh leather or curved surface workpiece, or the like.

Referring to fig. 4 to 6, in some embodiments, considering that when the airflow channel (i.e. the blowback hole 31 to the second through hole 12) of the second gas in the suction cup is curved, that is, when the direction of the center line of at least one of the blowback hole 31 and the second through hole 12 has an inclination angle with the first direction, resistance and damage are generated to the flow of the second gas, resulting in problems such as flow reduction and pressure loss of the gas, the blowback mechanism 30 and the suction cup core 20 are located on the same side of the suction cup body 10, and the center line of the blowback hole 31 and the center line of the second through hole 12 are disposed in parallel.

By restricting the blowback mechanism 30 and the chuck core 20 to be located at the same side of the chuck body 10, and the blowback hole 31 and the center line of the second through hole 12 are arranged in parallel, the air flow channel of the second air can be made to be straight, so that the air flow direction in the chuck is parallel to the direction in which the chuck core 20 points to the chuck body 10, compared with the design that the air flow channel of the second air in the chuck is curved, the resistance and the breakage of the air in the air flow channel can be reduced, so that when the second air flows to the adsorption surface 10a through the blowback hole 31 and the second through hole 12, a larger pressure from the chuck core 20 to the chuck body 10 can be formed on the surface of the workpiece, thereby being beneficial to separating the workpiece from the adsorption surface 10a.

Optionally, the center line of the second through hole 12 is perpendicular to the suction surface 10a, so that the second gas can be transmitted along the direction perpendicular to the suction surface 10a, so as to facilitate the workpiece to be separated from the suction surface 10a vertically along the direction that the suction cup core 20 points to the suction cup body 10, so as to facilitate the workpiece to be moved to a designated position along the direction that the suction cup core 20 points to the suction cup body 10 after being separated from the suction surface 10a, and improve the position accuracy of the workpiece.

In other embodiments, the blowback mechanism 30 may also be located on the outer peripheral side of the chuck body 10, and the second through hole 12 is illustratively a multi-segment hole, where the second through hole 12 includes a first hole segment and a second hole segment that are connected, the center line of the first hole segment is parallel to the suction surface 10a and penetrates the outer peripheral side of the chuck body 10, the center line of the second hole segment is perpendicular to the suction surface 10a and extends from one end connected to the first hole segment in a direction away from the first hole segment to penetrate the suction surface 10a, so that the second through hole 12 has a curved airflow channel, the center line of the blowback hole 31 is parallel to the center line of the first hole segment, and the second gas is sequentially transmitted to the suction surface 10a through the blowback hole 31, the first hole segment, and the second hole segment, so as to form a blowback pressure for separating the workpiece from the suction surface 10a at the second hole segment.

In some embodiments, the number of the second through holes 12 is plural, the plurality of second through holes 12 are uniformly distributed in the chuck body, the number of the blowback holes 31 is plural, and the plurality of blowback holes 31 are in one-to-one correspondence with the plurality of second through holes.

Therefore, the back blowing pressure born by each part of the workpiece can be balanced, the back blowing pressure born by each part of the workpiece is more uniform, the movement direction of the workpiece is controlled, the workpiece falls into the next station smoothly along the direction of the sucker core 20 pointing to the sucker body 10 after being separated from the suction surface 10a, the situation that the movement direction of the workpiece after being separated from the suction surface 10a is deviated due to overlarge local back blowing pressure, and the workpiece falls into the next station due to deviation of the position of the workpiece is avoided, and meanwhile, the situation that the workpiece is damaged due to overlarge local back blowing pressure can be avoided.

Optionally, the projection of the suction cup core 20 onto the suction cup body 10 is located at the center of the suction cup body 10, and the plurality of second through holes 12 are uniformly distributed on the periphery of the suction cup core 20. Thereby, the positions of the plurality of second through holes 12 relative to the workpiece are more reasonable so as to balance the back blowing pressure born by each part of the workpiece, the back blowing pressure born by each part of the workpiece is more uniform, the workpiece can fall into the next station smoothly along the direction of the back blowing pressure, and the structure of the Bernoulli sucker 100 is more reasonable so as to avoid the condition that the sucker core 20 needs to be perforated to conduct the second gas due to the shielding of the second through holes 12 by the sucker core 20.

Alternatively, the blowback hole 31 has a diameter smaller than that of the second through hole 12. Thereby, the accuracy requirement of the installation position of the blowback hole 31 relative to the second through hole 12 can be reduced, the installation and design of the blowback mechanism 30 are facilitated, and the situation that the second gas flows to the surface of the suction cup body 10, which is far away from the adsorption surface 10a, through the blowback hole 31 and causes gas waste due to the position deviation of the blowback hole 31 relative to the second through hole 12 is avoided.

Referring to fig. 7 and 8, in some embodiments, the blowback mechanism 30 is connected to the chuck core 20, the blowback mechanism 30 includes a first surface 30a and a second surface 30b opposite to each other, the first surface 30a faces the suction surface 10a, the first surface 30a protrudes toward the suction surface 10a and has a protrusion 32, the blowback hole 31 penetrates through the first surface 30a and the second surface 30b, and the blowback hole 31 penetrates through the protrusion 32.

In this way, the distance from the blowback mechanism 30 to the suction surface 10a can be shortened by increasing the boss 32 to shorten the distance from the blowback hole 31 to the workpiece, thereby increasing the gas flow pressure of the second gas with the same gas flow rate and flow velocity, and further shortening the time for the workpiece to come off the suction surface 10a.

Optionally, a distance between a surface of the side of the protruding portion 32 away from the first face 30a and the chuck body 10 is 1mm-3mm, for example, 1mm, 1.5mm, 2mm, or 2.5mm, so that the second gas can reach the surface of the workpiece quickly after being output through the blowback hole 31, so as to reduce loss of the second gas in the transportation process, and be beneficial to enabling the second gas to have a larger blowback pressure.

Optionally, as can be seen from the foregoing, the suction cup core 20 is protruding at the center of the suction cup body 10, the plurality of second through holes 12 are uniformly distributed on the periphery of the suction cup core 20, the blowback mechanism 30 is connected to the suction cup core 20, the protruding portion 32 is protruding at the first surface 30a, if the size of the protruding portion 32 is larger, when the blowback mechanism 30 is adjusted to rotate relative to the suction cup core 20, the protruding portion 32 is easy to interfere with the suction cup core 20, so that the position adjustment of the blowback hole 31 relative to the second through holes 12 is blocked, based on this, the ratio of the length of the protruding portion 32 to the length of the first surface 30a is 1:5-1:2, for example, the ratio of the length of the protruding portion 32 to the length of the first surface 30a is 1:4, 1:3 or 2:5, i.e. the length of the protruding portion 32 protruding from the first surface 30a of the blowback mechanism 30 is smaller than the length of other parts of the first surface 30a, so that the distance between the protruding portion 32 and the suction cup core 20 is enabled to be blocked, thereby being beneficial to reducing the relative rotation of the suction cup core 30, and reducing the manufacturing cost of the blowback mechanism 30.

In some embodiments, the blowback mechanism 30 is removably coupled to the suction cup core 20. Like this, can be favorable to the renewal maintenance of blowback mechanism 30, can make the position of blowback mechanism 30 relative to second through-hole 12 adjustable again to be favorable to adjusting blowback hole 31 and second through-hole 12's relative position, under the prerequisite that satisfies blowback hole 31 intercommunication second through-hole 12, make the position of blowback hole 31 relative work piece more reasonable, the application of force position of the relative work piece of air current pressure that is formed by the second gas is more reasonable promptly, thereby make blowback mechanism 30 more reasonable to the holistic blowback pressure of work piece, avoid concentrating or local atress is bigger because of the pressure, lead to the impaired problem of work piece.

Alternatively, the blowback mechanism 30 and the sucker core 20 may be connected by a threaded connection, a snap connection, or a shaft hole connection.

In one example, the blowback mechanism 30 is connected to the suction cup core 20 by a threaded connection. Alternatively, the blowback mechanism 30 may be provided with a first threaded hole, and the chuck core 20 is provided with a second threaded hole, through which threaded fasteners sequentially pass to fasten the blowback mechanism 30 to the chuck core 20. By adopting the threaded connection mode, the connection between the back-blowing mechanism 30 and the sucker core 20 is simple and reliable, and the position and angle adjustment of the back-blowing mechanism 30 relative to the sucker core 20 are more convenient, so that the position adjustment of the back-blowing hole 31 relative to the second through hole 12 is facilitated.

In another example, the blowback mechanism 30 is connected to the chuck core 20 by a shaft hole. Optionally, the first surface 30a of the blowback mechanism 30 is provided with a fixing post protruding toward the chuck core 20, the chuck core 20 is provided with a fixing hole, and the fixing post is mounted in the fixing hole, so that the blowback mechanism 30 is connected to the chuck core 20, and meanwhile, the blowback mechanism 30 can rotate relative to the chuck core 20, so as to facilitate the position adjustment of the blowback hole 31 relative to the second through hole 12.

Optionally, the material of the back-blowing mechanism 30 may be a metal material such as an aluminum alloy or a Plastic steel, so as to facilitate the processing and forming of the back-blowing mechanism 30, or the material of the back-blowing mechanism 30 may be a rigid Plastic such as polyvinyl chloride (Polyvinyl chloride, abbreviated as PVC), thermoplastic Rubber (TPR), etc., so that the back-blowing mechanism 30 has lighter weight while satisfying a certain plasticity.

In some embodiments, the bernoulli chuck 100 further includes a control valve 40, where the control valve 40 is provided with an air inlet 41, a first air outlet 42, and a second air outlet 43, where the air inlet 41 is for piping connection with the gas device, the first air outlet 42 is for piping connection with the adsorption channel 21, the second air outlet 43 is for piping connection with the blowback hole 31, and the control valve 40 is for opening the first air outlet 42 to control the adsorption channel 21 to maintain communication with the air inlet 41, or opening the second air outlet 43 to control the blowback hole 31 to maintain communication with the air inlet 41. When the control valve 40 is used for opening the first air outlet 42, the second air outlet 43 is blocked by the control valve 40 and is in a closed state, and the adsorption channel 21 is filled with the first air, so that the bernoulli chuck 100 adsorbs a workpiece; when the control valve 40 is used for opening the second air outlet 43, the first air outlet 42 is blocked by the control valve 40 and is in a closed state, and the back-blowing hole 31 is filled with the second air, so that the bernoulli chuck 100 releases the workpiece.

Thus, when the control valve 40 opens the first air outlet 42, the adsorption channel 21 is controlled to be communicated with the air inlet 41, i.e. the first air can flow to the adsorption channel 21 sequentially through the air inlet 41 and the first air outlet 42, and at this time, the second air outlet 43 is blocked by the control valve 40 to be in a closed state, i.e. the back-blowing mechanism 30 stops working, so that the workpiece is firmly adsorbed on the adsorption surface 10a under the action of the first air, thereby improving the adsorption reliability of the bernoulli chuck 100 on the workpiece; when the control valve 40 opens the second air outlet 43, the blowback hole 31 is kept in communication with the air inlet 41, i.e. the second air can flow to the blowback hole 31 through the air inlet 41 and the second air outlet 43 in sequence, at this time, the first air outlet 42 is blocked by the control valve 40 and is in a closed state, i.e. the first air for generating the adsorption effect cannot work through the chuck core 20, before the second air reaches the surface of the workpiece, the workpiece still depends on the adsorption force formed by the first air in the earlier stage to be adsorbed on the adsorption surface 10a, because the first air stops flowing, the adsorption force gradually decreases along with the passage of time, the workpiece overcomes the adsorption force under the gravity of the workpiece until the workpiece breaks away from the adsorption surface 10a, but the workpiece cannot be released quickly, so that the second air can form the air flow pressure from the chuck core 20 to the chuck body 10 on the surface of the workpiece through the second air inlet 41, the blowback hole 31 and the second air through hole 12.

Therefore, the arrangement of two air outlets of the same control valve 40 is adopted for the adsorption and release of the workpiece, so that the control of the time node of the connection of the first air outlet 42 and the connection of the second air outlet 43 by the Bernoulli suction cup 100 can be facilitated, the seamless switching of the Bernoulli suction cup 100 between the adsorption mode and the release mode can be realized, namely, the Bernoulli suction cup 100 stops the back blowing action of the second gas on the workpiece when the workpiece is adsorbed, or stops the adsorption action of the first gas on the workpiece when the workpiece is released, thereby not only improving the adsorption reliability and the release efficiency of the Bernoulli suction cup 100, but also avoiding the problem that the work efficiency is low because the first gas and the second gas are required to overcome when the first gas and the second gas are simultaneously circulated to the suction cup body 10, reducing the gas waste and saving the manufacturing cost. In addition, the adsorption and release of the workpiece using the same control valve 40 can also increase the reuse rate of the apparatus, and can reduce devices and apparatuses to reduce manufacturing costs compared to the bernoulli chuck 100 using two or more control valves 40.

Alternatively, when the number of the blowback holes 31 is plural, the second air outlets 43 may be plural, the blowback holes 31 are in one-to-one correspondence with the second air outlets 43, the blowback holes 31 are respectively connected to the corresponding second air outlets 43 by pipes, and all the blowback holes 31 may be connected to the same control valve 40 by pipes with the adsorption passage 21.

Thus, when the bernoulli chuck 100 releases the workpiece, the plurality of second air outlets 43 simultaneously transmit the second air, and the air flow rates of the transmitted second air are consistent, so that the air flow pressures are formed at the positions corresponding to the plurality of second through holes 12 simultaneously, and the air flow pressures at the plurality of second through holes 12 are consistent, so that each part of the workpiece is subjected to the blowback pressure with the same magnitude at the same time, the control of the movement direction of the workpiece is facilitated, the workpiece moves along the direction pointed by the blowback pressure after being separated from the adsorption surface 10a, and the position accuracy of the workpiece on the next station after being separated from the adsorption surface 10a is improved.

It will be appreciated that in other embodiments, the number of control valves 40 may be plural, and the adsorption channel 21 may be connected to one of the control valves 40 through a pipe, the blowback holes 31 may be connected to another one of the control valves 40 through a pipe, or the adsorption channel 21 may be connected to one of the control valves 40 through a pipe, the blowback holes 31 may be connected to another one of the control valves 40 through a pipe (i.e., the blowback holes 31 may be connected to different one of the control valves 40), or the adsorption channel 21 and one of the blowback holes 31 may be connected to one of the control valves 40 through a pipe, the blowback holes 31 may be connected to another one of the control valves 40 through a pipe, etc. Specifically, the method can be set according to actual requirements, and is not limited herein.

In some embodiments, the number of the blowback mechanisms 30 is plural, and the blowback mechanisms 30 are in one-to-one correspondence with the blowback holes 31, so that position adjustment of the blowback holes 31 relative to the second through holes 12 can be facilitated, so as to improve positions of workpieces corresponding to lines of the blowback holes 31.

In other embodiments, a plurality of blowback holes 31 may be located in the same blowback mechanism 30, so as to simplify the installation steps of the blowback mechanism 30, and facilitate the installation of the blowback mechanism 30.

In some embodiments, the bernoulli chuck 100 further includes a plurality of quick connectors respectively disposed on the adsorption channel 21 and the plurality of blowback holes 31, and the quick connectors are in threaded connection with the gas pipeline, so as to improve connection reliability between the pipeline for conveying and the adsorption channel 21 and the blowback holes 31.

The first, second, third, fourth, and various numerical numbers referred to herein are merely descriptive convenience and are not intended to limit the scope of the utility model.

It should be understood that, in various embodiments of the present utility model, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present utility model.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not cause the essence of the corresponding technical solutions to release the scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A bernoulli chuck, comprising:

the sucker comprises a sucker body, wherein the sucker body is provided with an adsorption surface for adsorbing a workpiece, a first through hole and a second through hole which penetrate through the adsorption surface are arranged at intervals, and the first through hole extends from the center of the sucker body to the direction away from the center of the sucker body to the side surface of the periphery penetrating through the sucker body;

the sucking disc core is arranged on one side of the sucking disc body, which is away from the adsorption surface, and is provided with an adsorption channel communicated with the first through hole, and the adsorption channel is used for introducing first gas so as to form an adsorption force for adsorbing the workpiece on the adsorption surface at the first through hole; and the back blowing mechanism is provided with a back blowing hole communicated with the second through hole, and the back blowing hole is used for introducing second gas so as to form back blowing pressure for separating the workpiece from the adsorption surface at the second through hole.

2. The bernoulli wand of claim 1, wherein the centerline of the second through-hole is perpendicular to the suction surface and/or the blowback mechanism and the wand are on the same side of the wand body and the centerline of the blowback hole and the centerline of the second through-hole are disposed in parallel.

3. The bernoulli chuck of claim 1, further comprising a control valve having an air inlet for connection with a gas device conduit, a first air outlet conduit connected to the suction channel, and a second air outlet conduit connected to the blowback aperture, the control valve for opening the first air outlet to control the suction channel to remain in communication with the air inlet, or opening the second air outlet to control the blowback aperture to remain in communication with the air inlet;

when the control valve is used for opening the first air outlet, the second air outlet is blocked by the control valve to be in a closed state, and the adsorption channel is filled with the first gas so that the Bernoulli sucker adsorbs the workpiece; when the control valve is used for opening the second air outlet, the first air outlet is blocked by the control valve and is in a closed state, and the back blowing hole is filled with the second air, so that the Bernoulli sucker releases the workpiece.

4. The bernoulli chuck according to claim 1, wherein the number of the second through holes is plural, the plurality of second through holes are uniformly distributed in the chuck body, the number of the blowback holes is plural, and the plurality of blowback holes are in one-to-one correspondence with the plurality of second through holes.

5. The bernoulli chuck of claim 4, further comprising a control valve, the control valve comprising a plurality of air outlets, the plurality of blowback holes being in one-to-one correspondence with the plurality of air outlets, and the plurality of blowback holes being respectively connected to the corresponding air outlets by pipes.

6. The bernoulli wand of claim 4, wherein the projection of the wand on the wand is centered on the wand and the plurality of second apertures are evenly distributed on the outer periphery of the wand.

7. The bernoulli wand of claim 1, wherein the blowback mechanism is coupled to the wand, the blowback mechanism includes opposing first and second faces, the first face faces the suction surface and the first face faces the suction surface with a protrusion protruding therefrom, the blowback aperture extends through the first face and the second face, and the blowback aperture extends through the protrusion.

8. The bernoulli wand of any one of claims 1-7, wherein the blowback mechanism is removably attached to the wand.

9. The bernoulli wand of any one of claims 1-7, wherein the blowback mechanism is made of an aluminum alloy, plastic steel, polyvinyl chloride, or thermoplastic rubber.

10. A handling device comprising a robot and the bernoulli wand of any one of claims 1-9, the bernoulli wand being attached to the robot.