CN110640780B

CN110640780B - Flexible pneumatic robot

Info

Publication number: CN110640780B
Application number: CN201910921926.7A
Authority: CN
Inventors: 华玉香
Original assignee: Nanjing Yinghe Valley Technology Co ltd
Current assignee: Nanjing Yinghe Valley Technology Co ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2021-05-14
Anticipated expiration: 2039-09-27
Also published as: CN112248024A; CN110640780A

Abstract

The invention discloses a flexible pneumatic robot, which comprises a power cylinder, a conical sliding table, a guide circular tube seat and a gas supply circular ring, wherein the power cylinder comprises a cylinder body, a piston rod, a cylinder end cover, a reset spring, an overflow valve, a gas tube joint and a gas inlet one-way valve; the invention can be suitable for workpieces with larger shape change and more kinds of workpieces, expands the application range and reduces the use cost.

Description

Flexible pneumatic robot

Technical Field

The invention relates to the technical field of clamping equipment, in particular to a flexible pneumatic robot.

Background

At present, the clamping equipment of a model is only suitable for the clamping work of a workpiece, and the clamping equipment of different models is required to be replaced to match with different workpieces, so that the universality of the clamping equipment is poor, and the use cost is high.

Disclosure of Invention

The object of the present invention is to overcome the above mentioned drawbacks and to provide a flexible pneumatic robot.

In order to achieve the purpose, the invention adopts the following specific scheme:

a flexible pneumatic robot comprises a power cylinder, a conical sliding table and a guide round pipe seat; the power cylinder comprises a cylinder body, a piston rod, a cylinder end cover, a return spring, an overflow valve, an air pipe joint and an air inlet one-way valve, the cylinder end cover is fixed at one end of the cylinder body, a cylinder cavity is formed between the cylinder end cover and the cylinder body, the piston rod is arranged in the cylinder cavity, the piston rod divides the cylinder cavity into an upper cavity and a lower cavity, one end of the piston rod extends out after penetrating through the end cover of the cylinder, the return spring is arranged in the lower cavity of the cylinder body, two ends of the reset spring are respectively propped against the other ends of the cylinder body and the piston rod, the air pipe joint is fixed on the cylinder body, the air pipe joint is communicated with an upper cavity of the air cylinder body, the overflow valve and the air inlet one-way valve are fixed on the air cylinder body in a staggered mode, and the overflow valve and the air inlet one-way valve are respectively communicated with a lower cavity of the air cylinder body; three I-shaped sliding grooves are formed in the conical surface of the conical sliding table at equal intervals, and the bottom of the conical sliding table is movably clamped with one end of the piston rod; the guide circular tube seat is fixed at one end of the cylinder body, three T-shaped guide grooves extend radially at equal intervals on the guide circular tube seat, the three T-shaped guide grooves are respectively connected with a sliding block seat in a sliding manner, the sliding block seat is also connected with an I-shaped sliding groove in a sliding manner, pneumatic deformation claws are respectively clamped on the three sliding block seats in a sliding manner, a row of air claw ejecting pieces are fixed on the pneumatic deformation claws at intervals along the length direction of the pneumatic deformation claws, and two adjacent air claw ejecting pieces are sequentially hinged together; the pneumatic deformation claw is characterized by further comprising an air supply ring, the air supply ring is communicated with the overflow valve through a first flexible hose, the air supply ring is further communicated with each air claw ejecting piece, and the air claw ejecting pieces are used for enabling the pneumatic deformation claws to generate bending deformation.

The pneumatic deformation claw comprises a pneumatic deformation body and a clamping jaw base, the clamping jaw base is connected to the sliding block base in a sliding mode, the pneumatic deformation body is fixed to the clamping jaw base, an air supply channel communicated with an air supply ring is arranged on the pneumatic deformation body and the clamping jaw base, and each air claw ejecting piece is communicated with the air supply ring through the air supply channel.

The pneumatic claw ejection piece comprises an ejection seat and an ejection sliding block, the ejection seat is fixed on the pneumatic deformation body and provided with a groove, the ejection sliding block is movably embedded in the groove and forms an ejection cavity with the ejection seat, the ejection cavity is communicated with the air supply channel, and the ejection sliding block is hinged with the ejection seat of the adjacent pneumatic claw ejection piece.

The pneumatic deformation body is provided with a plurality of U-shaped notches, and the U-shaped notches are arranged on the surface, in contact with the workpiece, of the pneumatic deformation body at equal intervals along the length direction of the pneumatic deformation body.

The pneumatic deformation body is provided with a V-shaped notch between two adjacent pneumatic claw ejection pieces.

The clamping jaw base is clamped on the sliding block base through a wave ball screw.

And the overflow valve is provided with an adjusting knob, and the adjusting knob is used for adjusting the withstand pressure of the overflow valve.

The invention has the beneficial effects that: compared with the prior art, the pneumatic clamping device has the advantages that the power cylinder drives the conical sliding table to move, so that the three sliding block seats are driven to slide, the three pneumatic deformation claws clamp a workpiece, meanwhile, the exhaust claw ejecting piece is arranged on the pneumatic deformation claws, the pneumatic deformation claws are bent and deformed, a coated type workpiece clamping mode is formed, the clamping is firmer, the clamping force is larger, the stroke of the three sliding block seats is larger, the moving radius of the three pneumatic deformation claws can be adjusted in a larger range, the pneumatic clamping device can be suitable for workpieces with larger appearance changes, namely, the flexible pneumatic manipulator of the same model can be suitable for more types of workpieces, the application range is expanded, and the use cost is reduced.

In addition, the pneumatic claw ejection piece can be communicated with the power cylinder, the bending deformation of the pneumatic deformation clamping claw is realized through the change of the pressure in the power cylinder, and a complex external air source control system is not needed.

In addition, the pneumatic deformation clamping claws are clamped on the sliding block seat in a sliding manner, so that the replacement is more convenient and quicker.

Drawings

FIG. 1 is a schematic diagram of the present invention;

FIG. 2 is a schematic structural diagram of a flexible pneumatic manipulator provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another view angle of a flexible pneumatic manipulator according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along A-A of FIG. 3;

FIG. 5 is a schematic diagram of a power cylinder provided in an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a power cylinder provided by an embodiment of the present invention;

FIG. 7 is a schematic view of the configuration of the pneumatic claw liftout element in cooperation with the pneumatic deforming claw according to the embodiment of the present invention;

FIG. 8 is a schematic diagram of a configuration of a pneumatically deformable jaw provided by an embodiment of the present invention;

FIG. 9 is a schematic structural view of another aspect of a pneumatically deformable jaw provided by an embodiment of the present invention;

FIG. 10 is a schematic structural view of a pneumatic ram ejector provided in accordance with an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a tapered slide table according to an embodiment of the present invention;

FIG. 12 is a schematic structural view of a guiding circular tube seat provided by an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a slider holder according to an embodiment of the present invention;

description of reference numerals: 1-a power cylinder; 11-a cylinder body; 12-a piston rod; 13-cylinder end cover; 14-a return spring; 15-an overflow valve; 151-adjusting knob; 16-a gas pipe joint; 17-an air inlet check valve; 2-a conical sliding table; 21-an I-shaped chute; 3-guiding the round pipe seat; 31-T-shaped guide grooves; 4-a slider seat; 5-a pneumatic deformation claw; 51-a pneumatically deformable body; 511-U shaped notch; 512-V-shaped notch; 52-jaw base; 53-gas supply channel; 6-ejecting the piece by the air claw; 61-an ejection seat; 62-ejecting the slide block; 7-air supply ring; 8-a first bellows; 9-wave ball screw.

Detailed Description

The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.

As shown in fig. 1 to 13, the flexible pneumatic robot of the present embodiment includes a power cylinder 1, a conical sliding table 2 and a guiding circular tube seat 3; the power cylinder 1 comprises a cylinder body 11, a piston rod 12, a cylinder end cover 13, a return spring 14, an overflow valve 15, a gas pipe joint 16 and a gas inlet check valve 17, wherein the cylinder end cover 13 is fixed at one end of the cylinder body 11, a cylinder cavity is formed between the cylinder end cover 13 and the cylinder body 11, the piston rod 12 is arranged in the cylinder cavity, the cylinder cavity is divided into an upper cavity and a lower cavity by the piston rod 12, one end of the piston rod 12 extends out after penetrating through the cylinder end cover 13, the return spring 14 is arranged in the lower cavity of the cylinder body 11, two ends of the return spring 14 are respectively abutted against the other ends of the cylinder body 11 and the piston rod 12, the gas pipe joint 16 is fixed on the cylinder body 11, the gas pipe joint 16 is communicated with the upper cavity of the cylinder body 11, and the overflow valve 15 and the gas inlet check valve, the overflow valve 15 and the air inlet check valve 17 are respectively communicated with the lower cavity of the cylinder body 11; the conical surface of the conical sliding table 2 is provided with three I-shaped sliding grooves 21 at equal intervals, and the bottom of the conical sliding table 2 is movably clamped with one end of the piston rod 12; the guide circular tube seat 3 is fixed at one end of the cylinder body 11, three T-shaped guide grooves 31 extend in the radial direction at equal intervals on the guide circular tube seat 3, the three T-shaped guide grooves 31 are respectively connected with a sliding block seat 4 in a sliding mode, the sliding block seats 4 are also connected with an I-shaped sliding groove 21 in a sliding mode, pneumatic deformation claws 5 are respectively clamped on the three sliding block seats 4 in a sliding mode, a row of pneumatic claw ejecting pieces 6 are fixed on the pneumatic deformation claws 5 at intervals along the length direction of the pneumatic deformation claws, and every two adjacent pneumatic claw ejecting pieces 6 are sequentially hinged together; the pneumatic deformation claw device is characterized by further comprising an air supply ring 7, wherein the air supply ring 7 is communicated with an overflow valve 15 through a first telescopic hose 8, the air supply ring 7 is further communicated with each air claw ejecting piece 6, and the air claw ejecting pieces 6 are used for enabling the pneumatic deformation claws 5 to generate bending deformation.

Specifically, one end of the piston rod 12 is connected with a blind rivet, the blind rivet and the conical sliding table 2 are connected together in a sliding and clamping manner, so that the piston rod 12 can drive the conical sliding table 2 to move, and the conical sliding table 2 is convenient to disassemble, when in work, air is firstly conveyed into an upper cavity of a cylinder cavity through the air pipe joint 16, the air pressure of the upper cavity of the cylinder cavity is larger than that of a lower cavity of the cylinder cavity, so that the piston rod 12 is pushed to move downwards towards the lower cavity, the piston rod 12 drives the conical sliding table 2 to move downwards, the conical sliding table 2 drives the three sliding block seats 4 to move inwards along the T-shaped guide groove 31, so that the three pneumatic deformation claws 5 are close towards the center to clamp a workpiece, meanwhile, the pressure of the lower cavity is gradually increased in the downward moving process of the piston rod 12, and after the pressure reaches a certain degree, the compressed air in the lower cavity pushes the overflow valve 15, compressed air enters the first flexible hose 8 after passing through the overflow valve 15 and then enters the air supply ring 7 through the first flexible hose 8, the air supply ring 7 is communicated with each air claw ejecting piece 6, the compressed air can enter each air claw ejecting piece 6 through the air supply ring 7 so as to supply air to each air claw ejecting piece 6, each air claw ejecting piece 6 extrudes the pneumatic deformation claw 5 under the action of the compressed air, the pneumatic deformation claws 5 are bent and deformed to automatically adapt to the appearance of a workpiece, and therefore the three pneumatic deformation claws 5 are formed to clamp the workpiece in a cladding mode, and meanwhile, due to the opening of the overflow valve 15, the constant pressure in the lower cavity and the air claw ejecting pieces 6 is maintained;

after clamping is completed, the air pipe joint 16 is communicated with the outside atmosphere, air is conveyed into the lower cavity through the air inlet one-way valve 17, the piston rod 12 is pushed to move upwards under the action of the return spring 14, the piston rod 12 moves upwards to gradually reduce the pressure of the lower cavity, so that the lower cavity and each air claw ejecting piece 6 form a negative pressure state, each air claw ejecting piece 6 enables the pneumatic deformation claw 5 to bend and deform reversely under the action of the negative pressure, and meanwhile, the sliding block seat 4 moves outwards to loosen the workpiece.

This embodiment drives toper slip table 2 through power cylinder 1 and removes, thereby it slides to drive three take-up housing 4, make three pneumatic deformation claw 5 carry the work piece, set up a exhaust claw ejecting piece 6 simultaneously on pneumatic deformation claw 5, make pneumatic deformation claw 5 produce bending deformation, it cliies the work piece to form the cladding formula, it is more firm to press from both sides, the grasping power is bigger, and three take-up housing 4's stroke is great, can adjust three pneumatic deformation claw 5's radius of activity by wider range, thereby can be adapted to the bigger work piece of appearance change, the flexible pneumatic manipulator of same model can adapt to more various work pieces promptly, application scope has been extended, use cost is reduced.

In addition, the pneumatic claw ejecting piece 6 arranged in the embodiment can be communicated with the power cylinder 1, the bending deformation of the pneumatic deformation clamping claw is realized through the change of the pressure in the power cylinder 1, and a complex external air source control system is not needed.

In addition, this embodiment is with the slip joint of pneumatic deformation clamping jaw on slider seat 4, changes more convenient and fast.

Based on the above embodiment, as shown in fig. 1 to 4 and 7 to 9, the pneumatic deformation claw 5 includes a pneumatic deformation body 51 and a jaw base 52, the jaw base 52 is slidably engaged with the slider base 4, the pneumatic deformation body 51 is fixed on the jaw base 52, the pneumatic deformation body 51 and the jaw base 52 are provided with an air supply channel 53 communicated with the air supply ring 7, and each air claw ejecting member 6 is communicated with the air supply ring 7 through the air supply channel 53; specifically, each clamping jaw base 52 is connected with a second flexible hose communicated with the air supply channel 53, and the other end of the second flexible hose is connected to the air supply ring 7, so that compressed air is conveyed into each air jaw ejecting piece 6.

Based on the above embodiment, as shown in fig. 3, 6 and 9, the pneumatic claw ejection member 6 includes an ejection seat 61 and an ejection slider 62, the ejection seat 61 is fixed on the pneumatic deformation body 51, the ejection seat 61 is provided with a groove, the ejection slider 62 is movably embedded in the groove and forms an ejection chamber with the ejection seat 61, the ejection chamber is communicated with the air supply channel 53, and the ejection slider 62 is hinged to the ejection seat 61 of the adjacent pneumatic claw ejection member 6; during operation, the air supply ring 7 supplies air to each ejection cavity through the second flexible hose and the air supply channel 53, so that the pressure in the ejection cavities is increased, the ejection sliders 62 are pushed to extend outwards, the ejection seats 61 of the adjacent air claw ejection pieces 6 can be ejected when the ejection sliders 62 extend out, the ejection seats 61 are fixed on the pneumatic deformation body 51, and therefore the purpose of extruding the pneumatic deformation body 51 is achieved, the pneumatic deformation body 51 is enabled to generate bending deformation, namely, the deformation of the pneumatic deformation body 51 is achieved through the sliding of the ejection sliders 62.

Based on the above embodiment, further, as shown in fig. 7 and 8, U-shaped notches 511 are provided at equal intervals along the length direction of the pneumatic deforming body 51 on the surface of the pneumatic deforming body 51 contacting with the workpiece, specifically, the number of the U-shaped notches 511 is eight, so that the pneumatic deforming body 51 is bent and deformed after being stressed.

Based on the above embodiment, as shown in fig. 7 and 8, the pneumatic deforming body 51 is further provided with V-shaped notches 512 between two adjacent pneumatic claw ejecting members 6, and correspondingly, the number of the V-shaped notches 512 is eight, so as to further facilitate the bending deformation of the pneumatic deforming body 51 after being stressed.

Based on the above embodiment, further, as shown in fig. 2, the clamping jaw base 52 is clamped on the slider base 4 through the wave ball screw 9, specifically, a clamping groove is formed in the clamping jaw base 52, the clamping jaw base 52 is slid into the slider base 4, the clamping jaw base 52 is fixed on the slider base 4 through the cooperation of the wave ball screw 9 and the clamping groove, the connection is reliable, the tool-free quick replacement of different types of pneumatic deformation claws 5 can be realized, and the efficiency is higher.

Based on the above embodiment, further, as shown in fig. 1 and fig. 4 to fig. 6, an adjusting knob 151 is arranged on the overflow valve 15, the adjusting knob 151 is used for adjusting the withstand pressure of the overflow valve 15, specifically, the overflow valve 15 includes a valve body, a valve spring and a valve core, the valve body is fixed on the cylinder body 11, the valve spring and the valve core are both arranged in the valve body, the adjusting knob 151 is fixed on the valve body, one end of the adjusting knob 151 extends into the valve body, and two ends of the valve spring are respectively connected to one end of the valve core and one end of the adjusting knob 151, so that the valve spring can be in different compression states through the adjusting knob 151, and further the withstand pressure of the valve core is changed, and the structure is more flexible.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.

Claims

1. A flexible pneumatic robot, characterized by: the device comprises a mechanical arm (a) capable of rotating at multiple angles, wherein a flexible mechanical claw (b) is arranged at the free end of the mechanical arm; the flexible mechanical claw (b) comprises: comprises a power cylinder (1), a conical sliding table (2) and a guide round pipe seat (3); the power cylinder (1) comprises a cylinder body (11), a piston rod (12), a cylinder end cover (13), a return spring (14), an overflow valve (15), an air pipe joint (16) and an air inlet one-way valve (17), wherein the cylinder end cover (13) is fixed at one end of the cylinder body (11);

an air cylinder cavity is formed between the air cylinder end cover (13) and the air cylinder body (11), the piston rod (12) is arranged in the cylinder cavity, the piston rod (12) divides the cylinder cavity into an upper cavity and a lower cavity, one end of the piston rod (12) passes through the cylinder end cover (13) and then extends out, the return spring (14) is arranged in the lower cavity of the cylinder body (11), two ends of the return spring (14) are respectively propped against the other ends of the cylinder body (11) and the piston rod (12), the air pipe joint (16) is fixed on the cylinder body (11), the air pipe joint (16) is communicated with the upper cavity of the cylinder body (11), the overflow valve (15) and the air inlet one-way valve (17) are fixed on the cylinder body (11) in a staggered way, the overflow valve (15) and the air inlet one-way valve (17) are respectively communicated with a lower cavity of the cylinder body (11); the conical surface of the conical sliding table (2) is provided with three I-shaped sliding grooves (21) at equal intervals, and the bottom of the conical sliding table (2) is movably clamped with one end of the piston rod (12); the guide circular tube seat (3) is fixed at one end of the cylinder body (11), the guide circular tube seat (3) is provided with three T-shaped guide grooves (31) which extend in the radial direction at equal intervals, the three T-shaped guide grooves (31) are respectively connected with a sliding block seat (4) in a sliding manner, the sliding block seat (4) is also connected with an I-shaped sliding groove (21) in a sliding manner, the three sliding block seats (4) are respectively connected with a pneumatic deformation claw (5) in a sliding and clamping manner, a row of air claw ejecting parts (6) are fixed on the pneumatic deformation claw (5) at intervals along the length direction of the pneumatic deformation claw, and two adjacent air claw ejecting parts (6) are sequentially hinged together; the pneumatic deformation claw is characterized by further comprising an air supply ring (7), wherein the air supply ring (7) is communicated with an overflow valve (15) through a first flexible hose (8), the air supply ring (7) is also communicated with each pneumatic claw ejecting piece (6) respectively, and the pneumatic claw ejecting pieces (6) are used for enabling the pneumatic deformation claws (5) to generate bending deformation;

when the pneumatic clamping device works, gas is conveyed into the upper cavity of the cylinder cavity through the air pipe joint (16), the air pressure of the upper cavity of the cylinder cavity is larger than that of the lower cavity of the cylinder cavity, so that the piston rod (12) is pushed to move downwards towards the lower cavity, the piston rod (12) drives the conical sliding table (2) to move downwards, the conical sliding table (2) drives the three sliding block seats (4) to move inwards along the T-shaped guide groove (31), so that the three pneumatic deformation claws (5) are closed towards the center to clamp a workpiece, meanwhile, the pressure of the lower cavity is gradually increased in the downward moving process of the piston rod (12), when the pressure reaches a certain degree, compressed air in the lower cavity pushes the overflow valve (15) open, so that the lower cavity is communicated with the first flexible hose (8), the compressed air enters the first flexible hose (8) after passing through the overflow valve (15), and then enters the air supply circular ring (7) through the first flexible hose (8), the air supply ring (7) is communicated with each air claw ejection piece (6), compressed air can enter each air claw ejection piece (6) through the air supply ring (7) so as to supply air for each air claw ejection piece (6), then each air claw ejection piece (6) extrudes the pneumatic deformation claw (5) under the action of the compressed air, so that the pneumatic deformation claw (5) generates bending deformation to automatically adapt to the appearance of a workpiece, thereby forming three pneumatic deformation claws (5) to clamp the workpiece in a cladding mode, and simultaneously, due to the opening of the overflow valve (15), the constancy of the pressure in the lower cavity and the air claw ejection pieces (6) is maintained; after clamping is completed, the air pipe joint (16) is communicated with the outside atmosphere, air is conveyed into the lower cavity through the air inlet one-way valve (17), the piston rod (12) is pushed to move upwards under the action of the return spring (14), the piston rod (12) moves upwards to gradually reduce the pressure of the lower cavity, so that the lower cavity and each air claw ejecting piece (6) form a negative pressure state, each air claw ejecting piece (6) enables the pneumatic deformation claw (5) to bend and deform reversely under the action of negative pressure, and meanwhile, the sliding block seat (4) moves outwards to loosen a workpiece.