CN212601918U - Flexible pneumatic finger and gripping device - Google Patents
Flexible pneumatic finger and gripping device Download PDFInfo
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- CN212601918U CN212601918U CN202021360338.5U CN202021360338U CN212601918U CN 212601918 U CN212601918 U CN 212601918U CN 202021360338 U CN202021360338 U CN 202021360338U CN 212601918 U CN212601918 U CN 212601918U
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- shell
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- pneumatic finger
- needle shaft
- flexible pneumatic
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- 239000004816 latex Substances 0.000 claims abstract description 25
- 229920000126 latex Polymers 0.000 claims abstract description 25
- 210000003437 trachea Anatomy 0.000 claims abstract description 4
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 238000005452 bending Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
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Abstract
The utility model discloses a flexible pneumatic finger and grabbing device, wherein, flexible pneumatic finger is including articulated first constitutional unit, a plurality of second constitutional unit and third constitutional unit in proper order, first constitutional unit, a plurality of second constitutional unit and third constitutional unit form inside cavity after articulated, be provided with the latex gasbag in the inside cavity, the latex gasbag is through setting up air vent on the first constitutional unit is connected with the trachea. The utility model provides a flexible pneumatic finger overall structure is compacter, can realize modular design and application theory with the help of first constitutional unit, second constitutional unit and third constitutional unit, and its load-carrying capacity is higher than the flexible soft drive ware of the same size bending by an order of magnitude.
Description
Technical Field
The utility model relates to a pneumatic finger field especially relates to a flexible pneumatic finger and grabbing device.
Background
Pneumatic fingers in the industry are mainly divided into two types, one type is a rigid pneumatic finger taking a cylinder piston as a transmission mechanism, the rigid pneumatic finger is characterized in that the power output is linear, larger load can be borne, and the defect is that the mechanical system is overstaffed in structure and is not suitable for grabbing flexible articles; the other type of flexible pneumatic finger is prepared by taking flexible materials such as silica gel, latex and the like as a main body and applying a special constraint mode, and is characterized by having good grabbing surface adaptability and having no destructive effect on an object to be grabbed.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
In view of the not enough of above-mentioned prior art, the utility model aims at providing a flexible pneumatic finger and grabbing device aims at solving the current flexible structure that starts the finger loose, and the output effort is small, can not bear the problem of great load.
The technical scheme of the utility model as follows:
the utility model provides a flexible pneumatic finger, wherein, includes articulated first constitutional unit, a plurality of second constitutional unit and third constitutional unit in proper order, first constitutional unit, a plurality of second constitutional unit and the articulated inside cavity that forms of third constitutional unit, be provided with the latex gasbag in the inside cavity, the latex gasbag is through setting up air vent and trachea on the first constitutional unit are connected.
The flexible pneumatic finger is characterized in that the first structural unit comprises a first outer wall body and a first rotary shell integrally connected with the first outer wall body, and a first needle shaft hole is formed in the first rotary shell; the second structural unit comprises a second outer wall body, a second front end rotating shell and a second rear end rotating shell which are integrally connected with the second outer wall body, wherein a second front end needle shaft hole is formed in the second front end rotating shell, and a second rear end needle shaft hole is formed in the second rear end rotating shell; the first structure unit and the second structure unit are aligned through the first needle shaft hole and the second front end needle shaft hole and are hinged through inserting a needle shaft; and adjacent second structure units are hinged by aligning the second front end needle shaft hole and the second rear end needle shaft hole and inserting a needle shaft.
The flexible pneumatic finger is characterized in that the outer diameter of the second front end rotating shell is larger than that of the first rotating shell, when the first structural unit is hinged to the second structural unit, the second front end rotating shell and the first rotating shell form a concentric structure, the second front end rotating shell is located on the outer layer of the concentric structure, and the first rotating shell is located on the inner layer of the concentric structure.
The flexible pneumatic finger is characterized in that a first rotation limiting inclined plane is arranged at the bottom of the first rotating shell, a second front end rotation limiting inclined plane is arranged at the bottom of the second front end rotating shell, and the first rotation limiting inclined plane and the second front end rotation limiting inclined plane form a maximum rotation angle between the first structural unit and the second structural unit when abutting against each other; the bottom of the second rear-end rotating shell is provided with a second rear-end rotating limiting inclined plane, and when the second front-end rotating limiting inclined plane and the second rear-end rotating limiting inclined plane are abutted against each other, the maximum rotating angle between adjacent second structure units is formed.
The flexible pneumatic finger is characterized in that the third structural unit comprises a third outer wall body and a third rotary shell integrally connected with the third outer wall body, and a third needle shaft hole is formed in the third rotary shell; the third structural unit and the second structural unit are hinged through the alignment of the third needle shaft hole and the second rear-end needle shaft hole and the insertion of a needle shaft.
The flexible pneumatic finger, wherein, the external diameter of third gyration shell is greater than the external diameter of second rear end gyration shell, third constitutional unit with when second constitutional unit accomplishes the articulated, third gyration shell with second rear end gyration shell forms concentric structure, the third gyration shell is located concentric structure's skin, second rear end gyration shell is located concentric structure's inlayer.
The flexible pneumatic finger is characterized in that a third rotation limiting inclined plane is arranged on the third rotation shell, a second rear end rotation limiting inclined plane is arranged at the bottom of the second rear end rotation shell, and the third rotation limiting inclined plane and the second rear end rotation limiting inclined plane form the maximum rotation angle of the third structural unit and the second structural unit when being mutually abutted.
The flexible pneumatic finger is characterized in that the first structural unit, the second structural unit and the third structural unit are all arc-shaped or straight prism-shaped.
The flexible pneumatic finger, wherein, be provided with air vent and screw thread fixed orifices on the first outer wall body.
A gripping device comprising a central plate, said flexible pneumatic fingers being fixedly disposed on said central plate.
Has the advantages that: compare in the software driver of silica gel gasbag type, the utility model provides a flexible pneumatic finger overall structure is compacter, can realize modular design and application theory with the help of first constitutional unit, second constitutional unit and third constitutional unit, and its load bearing capacity is higher by an order of magnitude than the flexible soft driver of the bending of equidimension.
Drawings
Fig. 1 is a schematic structural view of the flexible pneumatic finger of the present invention.
Fig. 2 is a schematic view of a partial cross-sectional structure of a flexible pneumatic finger according to the present invention.
Fig. 3 is a schematic view of the state of the flexible pneumatic finger of the present invention when it is not inflated.
Fig. 4 is a schematic view of the state of the flexible pneumatic finger after being inflated.
Fig. 5 is a schematic structural diagram of the first structural unit of the present invention.
Fig. 6 is a schematic structural diagram of a second structural unit according to the present invention.
Fig. 7 is a schematic diagram of the first structural unit and the second structural unit of the present invention in a non-inflated state.
Fig. 8 is a schematic diagram of the state of the first structural unit and the second structural unit after inflation.
Fig. 9 is a schematic structural diagram of a third structural unit according to the present invention.
Fig. 10 is another schematic structural view of a flexible pneumatic finger according to the present invention.
Fig. 11 is a schematic structural diagram of the gripping device of the present invention.
Fig. 12 is a schematic view of the top view structure of the center plate according to the present invention.
Detailed Description
The utility model provides a flexible pneumatic finger and grabbing device, for making the utility model discloses a purpose, technical scheme and effect are clearer, more clear and definite, following right the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, the present invention provides a flexible pneumatic finger, as shown in the figure, the flexible pneumatic finger includes a first structure unit 10, a plurality of second structure units 20, and a third structure unit 30, which are hinged in sequence, the first structure unit 10, the plurality of second structure units 20, and the third structure unit 30 are hinged to form an internal cavity, a latex air bag 40 is disposed in the internal cavity, and the latex air bag 40 is connected to an air tube 12 through an air vent 11 disposed on the first structure unit 10.
In this embodiment, the number of the second structural units 20 may be defined according to the use scenario of the user, and when the flexible pneumatic finger is used to grab the objects with different specifications and sizes, the number of the second structural units is selected as appropriate; as shown in fig. 1-2, taking 7 second structural units 20 as an example, 7 second structural units 20 are sequentially hinged, the first structural unit 10 is hinged to the front end of the 7 sequentially hinged second structural units, and the third structural unit 30 is hinged to the rear end of the 7 sequentially hinged second structural units; in this embodiment, first constitutional unit 10, 7 second constitutional unit and third constitutional unit form the inner cavity after articulated in proper order, be provided with latex gasbag 40 in the inner cavity, latex gasbag 40 is close to the one end of third constitutional unit and fixes on the inner wall of third constitutional unit, latex gasbag 40 is close to the one end of first constitutional unit is provided with the trompil, the trompil with fixed setting trachea joint 13 fixed connection on the air vent 11 of first constitutional unit 10, the wall of inner cavity can constitute the restraint to latex gasbag 40's inflation process.
In this embodiment, since both ends of the latex airbag 40 are respectively and fixedly connected to the first structural unit 10 and the third structural unit 30, when the pressure in the latex airbag 40 is zero (no gas is introduced), the latex airbag 40 can straighten the flexible pneumatic finger, and the position state of the flexible pneumatic finger at this time is as shown in fig. 3; the latex air bag 40 is aerated through the air pipe 12 to increase the internal pressure, when the relative pressure is 20kpa and no load exists, the position state of the flexible pneumatic finger is as shown in fig. 4, and the principle of the rotation of the flexible pneumatic finger is as follows: because constitute articulated relation between first constitutional unit, second constitutional unit and the third constitutional unit, when latex gasbag 40 internal pressure increases, latex gasbag 40 takes place to be out of shape to the drive take place to rotate between first constitutional unit, second constitutional unit and the third constitutional unit, and then snatch the object, work as first constitutional unit, second constitutional unit and third constitutional unit take place the butt in the biggest turned angle position, prevent that inside latex gasbag further takes place to warp, prevent to deviate from the latex gasbag from the interior cavity, cause the drive inefficacy.
In some embodiments, as shown in fig. 5 and 6, the first structural unit 10 includes a first outer wall body 14 and a first rotating shell 15 integrally connected to the first outer wall body 14, the first rotating shell 14 is provided with a first needle shaft hole 16; the second structure unit 20 includes a second outer wall body 21, a second front end revolving shell 22 and a second rear end revolving shell 23 integrally connected with the second outer wall body 21, a second front end needle shaft hole 24 is provided on the second front end revolving shell 22, and a second rear end needle shaft hole 25 is provided on the second rear end revolving shell 23; the first structural unit 10 and the second structural unit 20 are hinged through the alignment of the first needle shaft hole 16 and the second front needle shaft hole 22 and the insertion of the needle shaft; and the adjacent second structure units 20 are hinged through the alignment of the second front end needle shaft hole 24 and the second rear end needle shaft hole 25 and the insertion of a needle shaft.
In this embodiment, the first outer wall body 14 and the first rotating shell 15 are integrally connected, which means that the first rotating shell 15 and the first outer wall body 14 are integrally formed, that is, they cannot be separated; also, the second outer wall body 21 is integrally formed with the second front end revolving case 22 and the second rear end revolving case 23. The first structural unit and the second structural unit are hinged by inserting needle shafts with the same specification into needle shaft holes with the same size respectively, and the adjacent second structural units are hinged. Further, as shown in fig. 1, the outer diameter of the second front end revolving shell 22 is larger than the outer diameter of the first revolving shell 14, when the first structural unit 10 and the second structural unit 20 are hinged, the second front end revolving shell 22 and the first revolving shell 14 form a concentric structure, the second front end revolving shell 22 is located at the outer layer of the concentric structure, and the first revolving shell 14 is located at the inner layer of the concentric structure. In this embodiment, the concentric structure means that the first rotating shell 14 and the second front rotating shell 22 both use the hinged needle shaft as the axis and can rotate around the axis by a predetermined angle.
In some embodiments, as shown in fig. 5 and 6, a first rotation limiting inclined surface 17 is disposed at the bottom of the first rotation shell 14, a second front rotation limiting inclined surface 26 is disposed at the bottom of the second front rotation shell 22, and the first rotation limiting inclined surface 17 and the second front rotation limiting inclined surface 17 form a maximum rotation angle between the first structure unit 10 and the second structure unit 20 when abutting against each other. In this embodiment, the first structural unit 10 and the second structural unit 20 are maintained in the initial state shown in fig. 7 during the non-inflation process of the latex airbag 40, and when the latex airbag 40 is inflated, the second structural unit 20 gradually rotates, and finally the second front end rotation limiting inclined surface 26 and the first rotation limiting inclined surface 17 abut against each other to reach the maximum rotation angle of the first structural unit and the second structural unit, as shown in fig. 8. In this embodiment, the mutual abutting of the second front-end rotation limiting inclined surface 26 and the first rotation limiting inclined surface 17 completes the limiting design of the maximum relative rotation angle, so that the latex airbag 40 still has complete wall surface coating in the hollow cavity of the flexible pneumatic finger, and the driving failure caused by the excessive pressure coming out from the structural unit is avoided.
In some embodiments, as shown in fig. 6, a second rear rotation limiting inclined surface 27 is disposed at the bottom of the second rear rotation shell 23, and when the second front rotation limiting inclined surface 26 and the second rear rotation limiting inclined surface 27 abut against each other, a maximum rotation angle between adjacent second structure units 20 is formed.
In some embodiments, as shown in fig. 1 and 9, the third structural unit 30 includes a third outer wall body 31 and a third rotating shell 32 integrally connected to the third outer wall body 31, and a third needle shaft hole 33 is provided on the third rotating shell 32; the third structure unit 30 and the second structure unit 20 are hinged by aligning the third needle shaft hole 33 and the second rear needle shaft hole 26 and inserting a needle shaft. The outer diameter of the third rotating shell 32 is greater than the outer diameter of the second rear-end rotating shell 23, when the third structural unit 30 is hinged to the second structural unit 20, the third rotating shell 32 and the second rear-end rotating shell 23 form a concentric structure, the third rotating shell 32 is located on the outer layer of the concentric structure, and the second rear-end rotating shell 23 is located on the inner layer of the concentric structure. In this embodiment, the concentric structure means that the third rotating shell 32 and the second rear rotating shell 23 both use the hinged needle shaft as an axis and can rotate around the axis by a predetermined angle.
Further, as shown in fig. 1 and 9, a third rotation limiting inclined surface 34 is disposed at the bottom of the third rotation shell 32, a second rear rotation limiting inclined surface 27 is disposed at the bottom of the second rear rotation shell 23, and when the third rotation limiting inclined surface 34 and the second rear rotation limiting inclined surface 38 abut against each other, a maximum rotation angle between the third structure unit 30 and the second structure unit 20 is formed.
In some embodiments, as shown in fig. 1, the first structural unit, the second structural unit and the third structural unit are all arc-shaped, but not limited thereto. For example, as shown in fig. 10, the first structural unit, the second structural unit, and the third structural unit may be all in a shape of a straight prism.
In some embodiments, as shown in fig. 1 and 5, the first structural unit 10 is further provided with a threaded fixing hole 18, and the flexible pneumatic finger is fixed on the outer end device through the matching of the threaded fixing hole 18 and a screw.
In some embodiments, as shown in fig. 11, there is also provided a grasping device including a central plate 50 and the above-described flexible pneumatic finger 60 fixedly disposed on the central plate 50. Specifically, the central plate 50 is provided with a fixing hole 51 fitted to the screw fixing hole 18 of the first structural unit and an air tube through hole 52 fitted to the air vent hole 11 of the first structural unit, and the external air tube 12 is connected to the opening of the latex bladder 40 through the air tube through hole 52 and the air vent hole 11 in this order and finally through the air tube joint 13.
In some embodiments, one or more flexible pneumatic fingers 60 may be disposed on the central plate 50 for grasping different objects, for example, as shown in fig. 11 and 12, 4 flexible pneumatic fingers 60 may be uniformly fixed on the central plate 50.
In some embodiments, as shown in fig. 12, the central plate is further provided with a plurality of mounting holes 53, and the central plate 50 is conveniently mounted on the end of the robot arm or the base frame through the mounting holes 53.
In summary, the flexible pneumatic finger provided by the utility model has a more compact overall structure, can realize modular design and application concept by means of the first structural unit, the second structural unit and the third structural unit, and has a load bearing capacity higher than that of a flexible soft driver bent in the same size by one order of magnitude; and the maximum rotation angle is arranged on the adjacent structural units, so that the pneumatic finger protector has a certain safety protection effect on the flexible pneumatic finger.
It is to be understood that the invention is not limited to the above-described embodiments, and that modifications and variations may be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a flexible pneumatic finger which characterized in that, is including articulated first constitutional unit, a plurality of second constitutional unit and third constitutional unit in proper order, first constitutional unit, a plurality of second constitutional unit and the articulated inside cavity that forms of third constitutional unit, be provided with the latex gasbag in the inside cavity, the latex gasbag is through setting up air vent and trachea on the first constitutional unit are connected.
2. The flexible pneumatic finger of claim 1, wherein the first structural unit comprises a first outer wall body and a first swivel housing integrally connected to the first outer wall body, the first swivel housing being provided with a first pintle hole; the second structural unit comprises a second outer wall body, a second front end rotating shell and a second rear end rotating shell which are integrally connected with the second outer wall body, wherein a second front end needle shaft hole is formed in the second front end rotating shell, and a second rear end needle shaft hole is formed in the second rear end rotating shell; the first structure unit and the second structure unit are aligned through the first needle shaft hole and the second front end needle shaft hole and are hinged through inserting a needle shaft; and adjacent second structure units are hinged by aligning the second front end needle shaft hole and the second rear end needle shaft hole and inserting a needle shaft.
3. The flexible pneumatic finger according to claim 2, wherein the second front swivel shell has an outer diameter larger than that of the first swivel shell, and when the first structural unit is hinged to the second structural unit, the second front swivel shell and the first swivel shell form a concentric structure, the second front swivel shell is located at an outer layer of the concentric structure, and the first swivel shell is located at an inner layer of the concentric structure.
4. The flexible pneumatic finger according to claim 3, wherein the bottom of the first rotary shell is provided with a first rotation limiting slope, the bottom of the second front rotary shell is provided with a second front rotation limiting slope, and the first rotation limiting slope and the second front rotation limiting slope form a maximum rotation angle between the first structural unit and the second structural unit when abutting against each other; the bottom of the second rear-end rotating shell is provided with a second rear-end rotating limiting inclined plane, and when the second front-end rotating limiting inclined plane and the second rear-end rotating limiting inclined plane are abutted against each other, the maximum rotating angle between adjacent second structure units is formed.
5. The flexible pneumatic finger of claim 2, wherein the third structural unit comprises a third outer wall body and a third swivel case integrally connected with the third outer wall body, the third swivel case being provided with a third needle shaft hole; the third structural unit and the second structural unit are hinged through the alignment of the third needle shaft hole and the second rear-end needle shaft hole and the insertion of a needle shaft.
6. The flexible pneumatic finger according to claim 5, wherein the third swivel shell has an outer diameter larger than that of the second rear swivel shell, and when the third structural unit is hinged to the second structural unit, the third swivel shell and the second rear swivel shell form a concentric structure, the third swivel shell is located at an outer layer of the concentric structure, and the second rear swivel shell is located at an inner layer of the concentric structure.
7. The flexible pneumatic finger according to claim 6, wherein a third rotation limiting inclined surface is provided on the third rotation housing, a second rear rotation limiting inclined surface is provided at the bottom of the second rear rotation housing, and when the third rotation limiting inclined surface and the second rear rotation limiting inclined surface abut against each other, a maximum rotation angle of the third structural unit and the second structural unit is formed.
8. The flexible pneumatic finger according to claim 1, wherein the first, second and third structural units are all arc-shaped or right prism-shaped.
9. The flexible pneumatic finger of claim 2 wherein the first outer wall body is provided with a threaded securing hole.
10. A gripping device comprising a central plate, a flexible pneumatic finger according to any one of claims 1-9 fixedly disposed on said central plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021360338.5U CN212601918U (en) | 2020-07-09 | 2020-07-09 | Flexible pneumatic finger and gripping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021360338.5U CN212601918U (en) | 2020-07-09 | 2020-07-09 | Flexible pneumatic finger and gripping device |
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| Publication Number | Publication Date |
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| CN212601918U true CN212601918U (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021360338.5U Active CN212601918U (en) | 2020-07-09 | 2020-07-09 | Flexible pneumatic finger and gripping device |
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| CN (1) | CN212601918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844113A (en) * | 2020-07-09 | 2020-10-30 | 南方科技大学 | Flexible pneumatic finger and gripping device |
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2020
- 2020-07-09 CN CN202021360338.5U patent/CN212601918U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844113A (en) * | 2020-07-09 | 2020-10-30 | 南方科技大学 | Flexible pneumatic finger and gripping device |
| CN111844113B (en) * | 2020-07-09 | 2024-09-03 | 南方科技大学 | Flexible pneumatic finger and grabbing device |
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