CN110842960B

CN110842960B - Impact-resistant damage-proof pneumatic rotating shaft

Info

Publication number: CN110842960B
Application number: CN201911191042.7A
Authority: CN
Inventors: 马俊杰; 王家超
Original assignee: Nanjing Summit Guanfeng Plastic Co ltd
Current assignee: Nanjing Summit Guanfeng Plastic Co ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2021-02-12
Anticipated expiration: 2039-11-28
Also published as: CN110842960A

Abstract

The invention discloses an impact-resistant damage-proof pneumatic rotating shaft which comprises a chassis, a rotating cylinder arranged on the chassis and a buffer bracket arranged on the rotating cylinder, wherein the rotating cylinder is arranged on the chassis; the two ends of the buffering support are correspondingly provided with a first buffer and a second buffer, the buffering support is further provided with a proximity switch, and the main shaft of the rotary cylinder penetrates through the buffering support and is correspondingly provided with an integrated positioning disc at the shaft end. Compared with the existing positioning scheme combining the positioning disc and the positioning pin, the positioning method has the advantages of accurate positioning, difficulty in abrasion, looseness avoidance and convenience in installation and adjustment; the long arm end and the short arm end of the integrated positioning disk in the device are both provided with stress grooves, and when the rotating shaft bears unexpected impact force, the integrated positioning disk is broken at the stress grooves, so that the high-value rotating cylinder is protected from being damaged.

Description

Impact-resistant damage-proof pneumatic rotating shaft

Technical Field

The invention relates to the field of injection molding machine goods production and transportation equipment, in particular to an impact-resistant damage-proof pneumatic rotating shaft.

Background

The existing robot takes the injection-molded parts out of the mold and then needs to perform further processing or stack the parts for packaging. The injection molding part is often rotated by 90 degrees, so that a rotating shaft is additionally arranged; usually, a vane type swing cylinder is selected as driving power, the advantages of large torque and relatively light self weight are achieved, bolts and limiting blocks are usually added at the tail end of the cylinder, the scheme is simple and easy to implement, and the following defects exist: the positioning precision is poor; the contact points are easy to wear; positioning the rebound bounce; the rotation speed is slow.

In the prior art, for example, publication numbers: CN107553479A discloses a rotating shaft of an oil pressure buffering manipulator, which uses a spacing scheme in the form of a positioning disc and a positioning pin, and the front end of the rotating shaft uses a structure of a lock sleeve and a rotating disc; the scheme avoids the defects of the prior scheme and has good practical effect. However, in long-term practice, the scheme has the defects that the positioning pin is easy to loosen under impact, the lock sleeve and the rotating disc have fit clearance due to abrasion, and the air cylinder is damaged under accidental impact.

Disclosure of Invention

The purpose of the invention is as follows: to the deficiency that prior art exists, provide a prevent damaging pneumatic rotation axis that shocks resistance.

In order to achieve the purpose, the invention provides an impact-resistant damage-proof pneumatic rotating shaft which comprises a chassis, a rotating cylinder arranged on the chassis and a buffer bracket arranged on the rotating cylinder; the two ends of the buffer support are correspondingly provided with a first buffer and a second buffer, the buffer support is also provided with a proximity switch, a main shaft of the rotary cylinder penetrates through the buffer support and is correspondingly provided with an integrated positioning disc at the shaft end, the integrated positioning disc is arranged on the end surface of the buffer support, and the integrated positioning disc is provided with a long arm end and a short arm end which are L-shaped and mutually perpendicular; the long arm end and the short arm end correspond to the first buffer and the second buffer on two sides respectively, stress grooves are formed in the end portions of the inner sides of the two arm ends, bolt adjusting holes are further formed in the outer side of the long arm end, sensing bolts are correspondingly installed in the bolt adjusting holes, and the positions of the sensing bolts correspond to the positions of the proximity switches on the first buffer.

Preferably, the integrated positioning plate comprises a mounting end, the mounting end is of a mounting cylinder structure, the long arm end and the short arm end are correspondingly arranged on the mounting cylinder in a cross manner, the other two side ends of the mounting end, which correspond to the long arm end and the short arm end, correspondingly extend to form locking blocks, the two locking blocks form an integral arc-shaped structure, a locking seam is arranged between the two locking blocks, and a matched locking hole is arranged between the two locking blocks.

Preferably, the other end of the main shaft of the rotary cylinder penetrates through the chassis to be provided with an integrated rotary disc, a bearing is arranged between the integrated rotary disc and the chassis, a disc is sleeved outside the bearing, and the disc is arranged on the front face of the chassis through a bolt.

Preferably, a reserved thread hole is formed in the integrated rotating disc, and a taking-out clamp is installed through the reserved thread hole; the integrated rotating disc is correspondingly arranged on the main shaft through a fastening bolt and a key; and the base side is correspondingly arranged at the tail end of the arm of the manipulator through a bolt.

Preferably, the first buffer and the second buffer are both arranged on the buffer bracket through the arranged locking nuts; and the long arm end and the short arm end are both provided with bulges corresponding to the positions of the first buffer and the second buffer.

Has the advantages that: compared with the prior art, the invention has the following advantages:

(1) compared with the existing positioning scheme combining the positioning disc and the positioning pin, the positioning method has the advantages of accurate positioning, difficulty in abrasion, looseness avoidance and convenience in installation and adjustment; stress grooves are formed in the long arm end and the short arm end of the integrated positioning plate, and when the rotating shaft bears unexpected impact force, the integrated positioning plate is broken at the stress grooves, so that a high-value rotating cylinder is protected from being damaged;

(2) compared with the existing non-adjustable scheme, the scheme of adjusting the distance between the induction bolt and the proximity switch effectively avoids the defects that the positioning pin interferes with the proximity switch when the angle position is adjusted and the signal is unstable when the distance is too far, and has the advantages of flexibly adjusting the induction distance and confirming the stability of the signal;

(3) compared with the existing connecting scheme of combining the rotating disc and the shaft sleeve, the scheme avoids the loosening gap generated by abrasion between parts, and has the advantages of accurate positioning, difficult abrasion, loosening prevention and convenient installation and adjustment.

(4) Integration positioning disk in this device compares with traditional positioning disk, its volume is littleer, light in weight, link to each other with the revolving cylinder main shaft through the installation end during installation, the corresponding crisscross long arm end and the short arm end of setting up in installation end both sides, and both sides then extend in addition and are provided with the latch segment, and corresponding setting up in the latch segment locking seam and locking hole can be corresponding fix it on the main shaft, overall structure compactness more and light in weight, the volume is littleer, link to each other the installation back with long arm end and short arm end, bottom response trench position department atress is even, protection revolving cylinder and main shaft that can be better.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a view of the reverse side of the present invention;

FIG. 3 is a front partial block diagram of the present invention;

FIG. 4 is a top view of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIGS. 6 and 7 are block diagrams of the use of the present invention;

FIG. 8 is an assembled block diagram of the present invention;

FIG. 9 is a view of the integrated rotary disk mounting structure of the present invention;

FIG. 10 is a diagram of a positioning plate and a rotating plate in the prior art;

FIG. 11 is a view showing the construction of the integrated positioning plate and the integrated rotating plate according to the present invention.

Fig. 12 is a view showing the installation position of the stress groove in the present invention.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 8, the anti-impact damage-prevention pneumatic rotary shaft of the present embodiment is integrally installed at the end of the arm of the robot arm 20, and a corresponding take-out jig 22 is installed at the front end of the anti-impact damage-prevention pneumatic rotary shaft 21. When the anti-impact damage-prevention pneumatic rotating shaft 21 is controlled to rotate, the taking-out fixture 22 is driven to rotate together.

As shown in fig. 1 and 2, the present embodiment provides an impact-resistant damage-proof pneumatic rotating shaft, and the chassis 1 is bolted to the end of the arm of the robot arm 20, which is the basis of the whole mechanism. The rotary cylinder 2 is arranged on the back of the chassis 1 and is a power source; the buffer bracket 5 is arranged above the rear part of the rotary cylinder 2, and the first buffer 4 and the second buffer 6 are arranged at two sides of the buffer bracket 5 and are used for absorbing the rotary kinetic energy; the locking nut 7 is used for fixing the oil buffer 4 and the oil buffer 6 to prevent loosening; the proximity switch 3 is installed at the end of the buffer support 5, the integrated positioning disc 16 is installed at the end of the tail of the rotary cylinder main shaft 11, and the integrated positioning disc 16 is provided with an L-shaped long arm end 13 and a L-shaped short arm end 12 which are perpendicular to each other.

As shown in fig. 3 and 5, the integrated rotating disk 17 is installed at the front end of the head of the main shaft 11 of the rotating cylinder, the inner edge of the bearing 14 is sleeved outside the tail end of the integrated rotating disk 17, and the outer edge of the bearing 14 is sleeved inside the disk 8 to support the radial force of the rotating assembly, protect the bearing inside the rotating cylinder 2 and prevent the bearing from being damaged by excessive stress; the disc 8 is arranged on the front surface of the chassis 1 by bolts and plays a role of fixing a bearing 14; the front face of the integrated rotating disc 17 is reserved with a thread hole for installing the taking-out clamp 22.

As shown in fig. 5, 6 and 7, the integrated positioning disc 16 is mounted at the tail end of the rotary cylinder main shaft 11, the take-out fixture 22 and the integrated rotating disc 17 are mounted at the front end of the head of the rotary cylinder main shaft 11 to form a rotating assembly, and when the rotary cylinder main shaft 11 rotates, the components rotate together with the rotary cylinder main shaft 11.

As shown in fig. 6, in the normal state of the rotary cylinder 2, the main shaft 11 of the rotary cylinder rotates counterclockwise, the long arm end 13 of the integrated positioning plate 16 compresses the first buffer 4 to the fully contracted state, the rotational kinetic energy is absorbed by the first buffer 4, and the rotating assembly decelerates smoothly and stops rotating. And loosening the locking nut 7 and adjusting the position of the first buffer 4 along the axial direction, and fastening the locking nut 7 when the clamp 22 is taken out to reach the horizontal posture to complete the horizontal position adjustment. At this time, the sensing bolt 18 mounted at the head of the long arm end 13 is close to the proximity switch 3, and the sensing distance can be adjusted appropriately. The proximity switch 3 sends an electric signal to the robot 20, and the robot 20 confirms that the take-out jig 22 reaches the horizontal posture.

As shown in fig. 7, when the rotary cylinder 2 is operated, the main shaft 11 of the rotary cylinder rotates clockwise, the short arm end 12 of the integrated positioning plate 16 compresses the second damper 6 to a fully contracted state, the rotational kinetic energy is absorbed by the second damper 6, and the rotation assembly decelerates smoothly and stops rotating. The lock nut 7 is loosened and the position of the second damper 6 is adjusted in the axial direction, and the lock nut 7 is tightened when the take-out jig 22 reaches the vertical posture, completing the vertical position adjustment. At this time, the sensing bolt 18 mounted on the head of the long arm end 13 is separated from the proximity switch 3, the proximity switch 3 does not transmit an electric signal to the robot 20, and the robot 20 confirms that the take-out jig 22 reaches the vertical posture.

Under the signal driving of the manipulator 20, the rotary cylinder 2 alternately rotates counterclockwise or clockwise, and the take-out jig 22 is alternately in a horizontal or vertical posture.

As shown in fig. 7, the long arm end 13 and the short arm end 12 of the integrated stopper 16 are provided with a plurality of stress grooves 24, and the long arm end 13 and the short arm end 12 have strength enough to bear the torsion of the rotary cylinder 2 without deformation and damage during normal operation. When the taking-out jig 22 is subjected to an unexpected force, a torsion force exceeding a normal range acts on the long arm end 13 and the short arm end 12 and concentrates on a position where the stress groove 24 is present, so that the integrated stopper 16 is broken from the position of the stress groove 24 and the rotary cylinder 2 is in a free state, thereby preventing.

As shown in fig. 10, in the prior art, a structural form of a positioning disk 10 and a rotating disk 9 is adopted, a long arm end (positioning pin) 13 and a short arm end (positioning pin) 12 are arranged on the positioning disk 10, and the rotating disk 9 is installed in a form of a lock sleeve 15, which has the disadvantages that the positioning pin is easily loosened by impact, and the distance between the positioning pin and an induction switch cannot be adjusted correspondingly; the fit clearance appears because of wearing and tearing in lock cover and rotary disk, can lead to the cylinder to damage when the locating pin receives accidental impact.

As shown in fig. 9, 11 and 12, the integrated positioning plate 16 includes a mounting end 101, the mounting end 101 is a mounting cylinder structure, the long arm end 13 and the short arm end 12 are correspondingly arranged on the mounting cylinder in a crisscross manner, and the other two side ends of the mounting end 101 corresponding to the long arm end 13 and the short arm end 12 are correspondingly extended with locking blocks 102, the two locking blocks 102 form an integral arc structure, a locking slit 103 is arranged between the two locking blocks 102, and a locking hole 104 is arranged between the two locking blocks 102.

Integration positioning disk in this device compares with traditional positioning disk, its volume is littleer, light in weight, link to each other with the revolving cylinder main shaft through the installation end during installation, the corresponding crisscross long arm end and the short arm end of setting up in installation end both sides, and both sides then extend in addition and are provided with the latch segment, and corresponding setting up in the latch segment locking seam and locking hole can be corresponding fix it on the main shaft, overall structure compactness more and light in weight, the volume is littleer, link to each other the installation back with long arm end and short arm end, bottom response trench position department atress is even, protection revolving cylinder and main shaft that can be better.

Compared with the existing positioning scheme combining the positioning disc and the positioning pin, the positioning method has the advantages of accurate positioning, difficulty in abrasion, looseness avoidance and convenience in installation and adjustment; the long arm end and the short arm end of the integrated positioning disk in the device are both provided with stress grooves, and when the rotating shaft bears unexpected impact force, the integrated positioning disk is broken at the stress grooves, so that the high-value rotating cylinder is protected from being damaged.

Compared with the existing non-adjustable scheme, the scheme of adjusting the distance between the induction bolt and the proximity switch effectively avoids the defects that the positioning pin interferes with the proximity switch when the angle position is adjusted and the signal is unstable when the distance is too far, and has the advantages of flexibly adjusting the induction distance and confirming the stability of the signal.

Compared with the existing connecting scheme of combining the rotating disc and the shaft sleeve, the scheme avoids the loosening gap generated by abrasion between parts, and has the advantages of accurate positioning, difficult abrasion, loosening prevention and convenient installation and adjustment.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. Impact-resistant damage-proof pneumatic rotating shaft is characterized in that: comprises a chassis (1), a rotary cylinder (2) arranged on the chassis (1) and a buffer bracket (5) arranged on the rotary cylinder (2); a first buffer (4) and a second buffer (6) are correspondingly installed at two ends of the buffer support (5), a proximity switch (3) is further installed on the buffer support (5), a main shaft (11) of the rotary cylinder (2) penetrates through the buffer support (5) and is correspondingly provided with an integrated positioning disc (16) at the shaft end, the integrated positioning disc (16) is arranged on the end face of the buffer support (5), and the integrated positioning disc (16) is provided with a long arm end (13) and a short arm end (12) which are L-shaped and perpendicular to each other; the long arm end (13) and the short arm end (12) respectively correspond to the positions of the first buffer (4) and the second buffer (6) on two sides, stress grooves (24) are formed in the end portions of the inner sides of the two arm ends, a bolt adjusting hole (25) is further formed in the outer side of the long arm end (13), an induction bolt (18) is correspondingly installed in the bolt adjusting hole (25), and the position of the induction bolt (18) corresponds to the position, close to the switch (3), of the first buffer (4);

integration positioning disk (16) include a mounting end (101), mounting end (101) be an installation barrel structure, long arm end (13) and short arm end (12) corresponding be the cross and set up on the installation barrel, and the other both sides end that corresponds with long arm end (13) and short arm end (12) on mounting end (101) then corresponding extension is provided with latch segment (102), two latch segments (102) constitute whole arc structure to be provided with between two latch segments (102) and lock seam (103), and be provided with complex locking hole (104) between two latch segments (102).

2. The impact-resistant damage-proof pneumatic rotary shaft according to claim 1, wherein: the other end of the main shaft (11) of the rotary cylinder (2) penetrates through the chassis (1) to be provided with an integrated rotary disk (17), a bearing (14) is arranged between the integrated rotary disk (17) and the chassis (1), a disk (8) is sleeved outside the bearing (14), and the disk (8) is installed on the front face of the chassis (1) through a bolt.

3. The impact-resistant damage-proof pneumatic rotary shaft according to claim 2, wherein: a reserved thread hole is formed in the integrated rotating disc (17), and a taking-out clamp (22) is installed through the reserved thread hole; the integrated rotating disc (17) is correspondingly arranged on the main shaft (11) through a set fastening bolt (19) and a set key (23); and the chassis (1) side is correspondingly arranged at the arm tail end of the manipulator (20) through bolts.

4. The impact-resistant damage-proof pneumatic rotary shaft according to claim 1, wherein: the first buffer (4) and the second buffer (6) are both arranged on the buffer bracket (5) through the arranged locking nut (7); and the long arm end (13) and the short arm end (12) are respectively provided with a bulge (26) corresponding to the positions of the first buffer (4) and the second buffer (6).