CN111734730A

CN111734730A - Bionic sucker

Info

Publication number: CN111734730A
Application number: CN202010629778.4A
Authority: CN
Inventors: 王延杰; 张宇霆; 杨志威; 徐望舒; 骆敏舟; 朱灯林
Original assignee: Changzhou Campus of Hohai University
Current assignee: Changzhou Campus of Hohai University
Priority date: 2020-07-03
Filing date: 2020-07-03
Publication date: 2020-10-02
Anticipated expiration: 2040-07-03
Also published as: CN111734730B

Abstract

The invention discloses a bionic sucker in the technical field of sucker grabbing, and aims to solve the technical problems that when a vacuum sucker with a traditional structure is used for sucking and grabbing a target object with poor surface quality, leakage is easy to occur, so that the adsorption performance is reduced, and the working requirement cannot be met. The sucking disc includes the sucking disc main part, the lateral wall of sucking disc main part is from its top to bottom taper down gradually, and the top of sucking disc main part is equipped with first through-hole, and the bottom outer fringe of sucking disc main part is equipped with the arch, and the internal surface of sucking disc main part is equipped with the stereoplasm tooth.

Description

Bionic sucker

Technical Field

The invention relates to a bionic sucker, and belongs to the technical field of sucker grabbing.

Background

The vacuum chuck has the excellent characteristics of high response speed, stable adsorption, no damage to the surface of an object and the like, so that the vacuum chuck is increasingly widely applied to daily life and industrial production in recent years, and especially plays an irreplaceable role in application scenes of fragile products, flat plate pieces and the like which are not suitable for being grabbed by a traditional manipulator. However, in an actual working scene, the surface of the gripped object often has a certain roughness or undulation, and the surface of the gripped object such as a cardboard, a wood board and the like may also have an undulation structure such as an air hole, a groove and the like, thereby damaging a sealing structure formed by the edge of the suction cup and the surface of the gripped object. The vacuum chuck of traditional structure can appear leaking the phenomenon when adsorbing the target object of snatching the too poor surface quality, leads to adsorption efficiency to reduce, if the target object quality is overweight, often can't realize established work demand.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a bionic sucker to solve the technical problems that when a vacuum sucker with a traditional structure is used for sucking and grabbing a target object with too poor surface quality, the leakage phenomenon is easy to occur, the adsorption performance is reduced, and the working requirement cannot be met frequently.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the utility model provides a bionic sucker, includes the sucking disc main part, the lateral wall of sucking disc main part thins from its top to bottom gradually, and the top of sucking disc main part is equipped with first through-hole, and the bottom outer fringe of sucking disc main part is equipped with the arch, and the internal surface of sucking disc main part is equipped with the stereoplasm tooth.

Further, the shape of the protrusion comprises a quadrangular pyramid shape, and the shape of the hard tooth comprises a cone shape.

Further, the sucking disc main part includes sucking disc upper strata and sucking disc lower floor that connects from its top to bottom order, the top center on sucking disc upper strata is located to first through-hole, and the hardness that the sucking disc upper strata is greater than the sucking disc lower floor.

Further, the preparation material of the upper layer of the sucker comprises Ecoflex-30, and the preparation material of the lower layer of the sucker comprises Ecoflex-50.

Furthermore, the hard teeth comprise second hard teeth arranged on the inner surface of the upper layer of the sucker and first hard teeth arranged on the inner surface of the lower layer of the sucker, the second hard teeth are larger than the axial or/and radial sizes of the first hard teeth, and the number of the second hard teeth is smaller than that of the first hard teeth; the second hard teeth or/and the first hard teeth are uniformly distributed on the inner surface of the sucker main body in a circumferential array.

Further, still include fastening components, crossover sub passes through fastening components to be connected in the top surface of sucking disc main part, and crossover sub is used for connecting vacuum generator, the sucking disc main part is through first through-hole and vacuum generator intercommunication.

Furthermore, the fastening assembly comprises a sealing ring and a rivet nut, an external thread is arranged on the outer side of the bottom of the adapter, and a second through hole is formed in the adapter along the axial direction of the adapter;

the adapter penetrates into the first through hole from the outer surface of the top of the sucker main body, is in threaded connection with the rivet nut on the inner surface of the top of the sucker main body through the outer threads of the adapter, and the sealing ring is pressed between the inner surface of the top of the sucker main body and the rivet nut.

Further, fastening components still includes the connector of pressfitting between crossover sub and sucking disc main part, the connector is including connecting in the connector upper mounting and the connector lower mounting between crossover sub and sucking disc main part in proper order, the connector upper mounting is greater than the radial dimension of connector lower mounting and the same centre of a circle each other, the edge of connector upper mounting is equipped with along its axial is no less than two connector through-holes.

Furthermore, the connector lower platform is inwards sunken towards one side of the sucker main body to form a concave platform, and the concave platform is matched with the shape of the outer surface of the top of the sucker main body.

Furthermore, at least any one of the concave table of the lower connector table and the sucker main body, the sucker main body and the sealing ring, the sealing ring and the rivet nut, the rivet nut and the adapter and the sucker main body is sealed with sealing material, wherein the sealing material comprises silicone sealing glue.

Compared with the prior art, the invention has the following beneficial effects: the upper layer of the sucker with hard texture is beneficial to maintaining the grabbing shape of the sucker in the process of sucking and grabbing, and the sucker does not fall off due to deformation; the outer edge of the bottom of the lower layer of the sucker with softer texture is uniformly distributed with four pyramid-shaped bulges which deform when contacting a target object so as to be matched with the surface shape of the target object, so that the sucker can be more tightly adsorbed on the surface of the target object to form a sealing layer; two layers of conical hard teeth are distributed on the inner surface of the sucker main body, so that the radial friction force can be increased, the transverse anti-interference capability is improved, the process that the outer wall of the sucker is continuously compressed and deformed to the center when the sucker is about to fall off is inhibited, the effective adsorption area can be maintained when a heavy object is grabbed, and the grabbing performance is improved. The adapter is in threaded connection with the rivet nut in the sucker main body through external threads on the outer side of the bottom of the adapter, and the sucker main body, the fastening assembly and the adapter are sealed and assembled and connected by means of locking force between the adapter and the rivet nut, so that the adapter is simple in structure and high in reliability; the fastening assembly is pressed between the sucker main body and the adapter, and four connector through holes for fixing different operation terminals are formed in the edge of the upper connector platform of the fastening assembly, so that specific industrial requirements are met, and the applicability of the sucker is enhanced; the lower platform of the connector is inwards sunken to form a concave platform which can be tightly attached to the outer surface of the top of the sucker main body, so that the lower platform of the connector plays a supporting role in the process of pressing, deforming and covering the sucker, and is favorable for ensuring the integrity and uniformity of the deformation process of the sucker. The sealing ring and the sealing material coated on each component enable the interior of the sucker main body to have excellent sealing performance and excellent adsorption and grabbing performance. The sucker has the advantages of simplicity, smallness, high positioning precision and excellent grabbing performance.

Drawings

FIG. 1 is a front view of an embodiment of a suction cup of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the suction cup of the present invention;

FIG. 3 is a top view of an embodiment of the suction cup of the present invention;

FIG. 4 is an enlarged view of a portion of a bottom rim protrusion of an embodiment of the suction cup of the present invention;

FIG. 5 is a schematic view of the connector of the embodiment of the suction cup of the present invention.

In the figure: 1. a suction cup main body; 11. a suction cup lower layer; 111. a protrusion; 112. a first hard tooth; 12. a sucker upper layer; 121. a second hard tooth; 2. a fastening assembly; 21. a connector; 211. a concave platform; 212. the connector is put on the bench; 213. a connector through hole; 22. a seal ring; 23. pulling and riveting the nut; 3. and (4) converting the joint.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

It should be noted that in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention but do not require that the present invention must be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

The lamprey in nature is adsorbed on a host body by an oral sucker, so that the aims of feeding and migration are fulfilled. Observing the sucker at the mouth part: the funnel-shaped sucker at the mouth part is internally provided with a plurality of conical dentate bulges, irregular textures are distributed on the edge of the sucker, and the special structures enable the adsorption performance of the sucker to show unique superiority.

The bionic sucker is inspired by the special structure of a lamprey mouth sucker, the bionic sucker is shown in figure 1 and is a front view of the sucker embodiment, the sucker comprises a sucker main body 1, a fastening component 2 and a conversion joint 3, the sucker main body 1 is of a flat funnel-shaped structure and has high positioning precision and good anti-interference stability, a first through hole is formed in the top of the sucker main body, the top of the sucker main body 1 is connected with the conversion joint 3 through the fastening component 2, the conversion joint 3 is used for being connected with a vacuum generator, and the sucker main body 1 can be communicated with the vacuum generator through the first through hole.

More specifically, as shown in fig. 2, which is a cross-sectional view of an embodiment of the suction cup of the present invention, a sidewall of the suction cup main body 1 becomes thinner from the top to the bottom thereof, the suction cup main body 1 includes an upper suction cup layer 12 and a lower suction cup layer 11 which are connected in sequence from the top to the bottom thereof, and the first through hole is provided at the center of the top of the upper suction cup layer 12 for outputting an air flow to form a negative pressure; the hardness of sucking disc upper strata 12 is greater than sucking disc lower floor 11, and in this embodiment, sucking disc upper strata 12 adopts Ecoflex-30 material preparation, and sucking disc lower floor 11 adopts Ecoflex-50 material preparation. The upper layer 12 of the sucker is hard, so that the shape of the main body of the sucker main body 1 is kept in the process of adsorption and grabbing, and the grabbing stability is improved; because 11 textures of sucking disc lower floor are soft, do benefit to the sucking disc bending deformation, the complete cover is grabbed the object, and the bottom outer fringe of sucking disc lower floor 11 is equipped with arch 111 for thereby cooperate sucking disc lower floor 11 to warp and laminate better and grab the object surface, form sealed effect. In this embodiment, the protrusion 111 is in the shape of a pyramid, and specifically, as shown in fig. 4, is a partially enlarged view of a protrusion structure on the outer edge of the bottom of the embodiment of the suction cup of the present invention.

Two layers of hard teeth are arrayed on the circumference of the inner surface of the sucker main body 1, wherein 6 second hard teeth 121 with larger size are uniformly distributed on the inner surface of the upper layer 12 of the sucker, and 12 first hard teeth 112 with smaller size are uniformly distributed on the inner surface of the lower layer 11 of the sucker, and as shown in fig. 3 in particular, the sucker main body is a top view of the embodiment of the sucker. In this embodiment, the second hard teeth 121 and the first hard teeth 112 are conical in shape. Set up second stereoplasm tooth 121 and first stereoplasm tooth 112 at sucking disc main part 1 internal surface, do benefit to the radial frictional force of increase, improved horizontal interference killing feature, and can restrain sucking disc main part 1 when will drop, the process of sucking disc outer wall to the continuous compression deformation in center is favorable to when snatching heavier object, and the sucking disc still can maintain effectual adsorption area, improves and snatchs the performance.

The fastening assembly 2 comprises a connector 21, a sealing ring 22 and a rivet nut 23, wherein the sealing ring 22 is in a circular truncated cone shape, a circular through hole is formed in the middle of the sealing ring 22 and used for penetrating through the rivet nut 23, and the top of the rivet nut 23 penetrates through the circular through hole of the sealing ring 22 from bottom to top and enters the first through hole of the sucker main body 1; the outer side of the bottom of the adapter connector 3 is provided with an external thread, the adapter connector 3 is provided with a second through hole along the axial direction of the adapter connector 3, the bottom of the adapter connector 3 penetrates through a mounting hole in the center of the connector 21 from top to bottom, enters the first through hole of the sucker main body 1 and is in threaded connection with the rivet nut 23 through the external thread of the adapter connector, so that the adapter connector 3 is fixedly connected to the top of the sucker main body 1, and the sucker main body 1 can be communicated with the vacuum generator through the second through hole of the adapter connector 3. The sealing ring 22 is pressed between the inner surface of the top of the sucker main body 1 and the rivet nut 23, and plays a role in enhancing sealing.

More specifically, as shown in fig. 5, which is a schematic structural diagram of the connector in the embodiment of the suction cup of the present invention, the connector 21 includes an upper connector platform 212 and a lower connector platform sequentially connected between the adapter 3 and the suction cup main body 1, the cross sections of the upper connector platform 212 and the lower connector platform are circular, the upper connector platform 212 is larger than the radius of the lower connector platform and is concentric with each other, and the edge of the upper connector platform 212 is provided with four connector through holes 213 along the axial direction thereof, which can be used for fixing the suction cup of the present invention to different operation terminals to achieve specific industrial requirements. The lower connector platform is inwards recessed towards one side of the sucker main body 1 to form a concave platform 211, the shape of the concave platform 211 is matched with that of the outer surface of the top of the sucker main body 1, the concave platform 211 can be tightly attached to the outer surface of the top of the sucker main body 1, a supporting effect is achieved in the process that the sucker is pressed to deform and covers an object, and integrity and uniformity of the deformation process of the sucker are guaranteed.

In the embodiment of the invention, in the parts such as the lower sucking disc layer 11, the upper sucking disc layer 12, the connector 21, the sealing ring 22, the rivet nut 23, the adapter 3 and the like, the connecting surfaces between adjacent parts are all sealed with sealing materials, and the sealing materials include but are not limited to silicone sealant, so that the sealing effect is enhanced, and the adsorption performance of the sucking disc of the invention is improved.

In summary, the embodiment of the suction cup of the invention comprises a suction cup main body 1, a fastening assembly 2 and an adapter 3, wherein the suction cup main body 1 comprises a suction cup lower layer 11 and a suction cup upper layer 12, and the suction cup upper layer 12 with a hard texture is beneficial to maintaining the grabbing shape of the suction cup in the process of sucking and grabbing, and the suction cup does not fall off due to deformation; the outer edge of the bottom of the lower layer 11 of the sucker with softer texture is uniformly distributed with four pyramid-shaped bulges 111 which deform when contacting a target object so as to be matched with the surface shape of the target object, so that the sucker can be more tightly adsorbed on the surface of the target object to form a sealing layer; two layers of conical hard teeth are distributed on the inner surface of the sucker main body 1, so that the radial friction force can be increased, the transverse anti-interference capability is improved, the process that the outer wall of the sucker is continuously compressed and deformed to the center when the sucker is about to fall off is inhibited, the effective adsorption area can be maintained when a heavy object is grabbed, and the grabbing performance is improved. The adapter 3 is used for connecting a vacuum generator, and the sucker main body 1 is communicated with the vacuum generator through the adapter 3. The adapter 3 is in threaded connection with the rivet nut 23 in the sucker main body 1 through external threads on the outer side of the bottom of the adapter, and the sealing and assembling connection among the sucker main body 1, the fastening assembly 2 and the adapter 3 is realized by means of the locking force between the adapter and the chuck main body, so that the adapter is simple in structure and high in reliability; the fastening component 2 is pressed between the sucker main body 1 and the adapter 3, and four connector through holes 213 for fixing different operation terminals are formed in the edge of the connector upper table 212 to meet specific industrial requirements, so that the applicability of the sucker is enhanced; the lower platform of the connector is inwards sunken to form a concave platform 211 which can be tightly attached to the outer surface of the top of the sucker main body 1, so that the support effect is achieved in the process that the sucker is pressed to deform and covers an object, and the integrity and uniformity of the deformation process of the sucker are guaranteed. The sealing ring 22 and the sealing material applied to each component provide excellent sealing performance inside the suction cup body 1 and excellent suction gripping performance. Therefore, the sucker has the advantages of simplicity, smallness, high positioning precision and excellent grabbing performance.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a bionic sucker, characterized by, includes sucking disc main part (1), the lateral wall of sucking disc main part (1) thins from its top to bottom gradually, and the top of sucking disc main part (1) is equipped with first through-hole, and the bottom outer fringe of sucking disc main part (1) is equipped with arch (111), and the internal surface of sucking disc main part (1) is equipped with the stereoplasm tooth.

2. The bionic sucker according to claim 1, wherein the shape of the protrusion (111) comprises a quadrangular pyramid shape, and the shape of the hard tooth comprises a cone shape.

3. The bionic sucker according to claim 1, wherein the sucker main body (1) comprises an upper sucker layer (12) and a lower sucker layer (11) which are sequentially connected from top to bottom, the first through hole is formed in the center of the top of the upper sucker layer (12), and the hardness of the upper sucker layer (12) is greater than that of the lower sucker layer (11).

4. The bionic sucker according to claim 3, wherein the upper sucker layer (12) is made of Ecoflex-30, and the lower sucker layer (11) is made of Ecoflex-50.

5. The bionic sucker according to claim 3, wherein the hard teeth comprise second hard teeth (121) arranged on the inner surface of the upper sucker layer (12) and first hard teeth (112) arranged on the inner surface of the lower sucker layer (11), the second hard teeth (121) are larger than the axial or/and radial dimension of the first hard teeth (112), and the second hard teeth (121) are smaller than the number of the first hard teeth (112); the second hard teeth (121) or/and the first hard teeth (112) are uniformly distributed on the inner surface of the sucker main body (1) in a circumferential array.

6. The bionic sucker according to claim 3, further comprising a fastening component (2) and an adapter (3), wherein the adapter (3) is connected to the outer surface of the top of the sucker main body (1) through the fastening component (2), the adapter (3) is used for connecting a vacuum generator, and the sucker main body (1) is communicated with the vacuum generator through a first through hole.

7. The bionic sucker as claimed in claim 6, wherein the fastening assembly (2) comprises a sealing ring (22) and a rivet nut (23), the outer side of the bottom of the adapter (3) is provided with an external thread, and the adapter (3) is provided with a second through hole along the axial direction thereof;

the adapter (3) penetrates into the first through hole from the outer surface of the top of the sucker main body (1) and is in threaded connection with the rivet nut (23) on the inner surface of the top of the sucker main body (1) through the outer threads of the adapter, and the sealing ring (22) is pressed between the inner surface of the top of the sucker main body (1) and the rivet nut (23).

8. The bionic sucker as claimed in claim 7, wherein the fastening assembly (2) further comprises a connector (21) pressed between the adapter (3) and the sucker body (1), the connector (21) comprises a connector upper stage (212) and a connector lower stage which are sequentially connected between the adapter (3) and the sucker body (1), the connector upper stage (212) is larger than the radial dimension of the connector lower stage and is concentric with each other, and the edge of the connector upper stage (212) is provided with not less than two connector through holes (213) along the axial direction thereof.

9. The bionic sucker according to claim 8, wherein the connector lower platform is recessed inwards towards the side of the sucker main body (1) to form a concave platform (211), and the concave platform (211) is matched with the shape of the outer surface of the top of the sucker main body (1).

10. The bionic sucker as claimed in claim 9, wherein at least one of the upper sucker layer (12) and the lower sucker layer (11), the adapter (3) and the upper connector stage (212), the concave stage (211) of the lower connector stage and the sucker body (1), the sucker body (1) and the sealing ring (22), the sealing ring (22) and the rivet nut (23), the rivet nut (23) and the adapter (3), and the adapter (3) and the sucker body (1) is sealed with a sealing material, and the sealing material comprises silicone sealant.