CN217072416U - Overload flexible connecting device - Google Patents

Abstract

The utility model provides an overload flexible connection device, include the seat of honour of being connected with the arm, the lower seat of being connected with the jack catch, be equipped with air spring between seat of honour and the lower seat. The device is used between arm and jack catch, is equipped with flexonics, has effectively avoided because the jack catch that transships and the jack catch damage that causes of colliding with between the thing of waiting to snatch because of overloading, improves jack catch life, utilizes the flexonics between jack catch and the arm, can snatch the size of article quality according to the jack catch, realizes automatically regulated, has effectively protected the connecting portion between jack catch and the arm, improves life.

Description

Overload flexible connecting device

Technical Field

The utility model relates to a flexonics technical field especially relates to a connecting device for arm jack catch, specifically indicates an overload flexible connecting device.

Background

As is well known, robot manipulator uses more and more extensively in modern industry, traditional manipulator adopts programming control system, every action, the position all has accurate design, guaranteed the precision in the use, like welding manipulator, the position is mutually supported with the removal, has guaranteed the welding seam quality, snatch robot manipulator, snatch same article from fixed position at every turn, move to other fixed position, snatch accurately, put things in good order etc. these are directional thoughts that have utilized the robot, use the manipulator to operate fixed action.

Along with the continuous increase of industrial robot range of application, more and more environment need the manipulator to replace manual operation, need move some heavier article of quality to another station or transport on the dolly like the workshop, traditional mode or many people partake the transport, or use and hang the transport, waste time and energy, can't use present robotic arm because the product shape that needs the transport has the difference, also does not have fixed position, utilizes current robotic arm to realize.

I have designed a section and can use the manipulator that the non-fixed position snatched and carried non-fixed shape product, nevertheless because not programming realizes designing fixed line and shift position, can produce the jack catch and wait to snatch the object and take place the phenomenon of colliding with in the manual operation in-process unavoidably, be rigid connection between traditional arm and the jack catch, if collide with the damage that leads to the jack catch easily many times, in order to prevent the jack catch damage.

In addition, the traditional clamping jaws are rigidly connected with the mechanical arm, when the mass of a grabbed object is large, the clamping jaws and the mechanical arm are stressed greatly, the requirement on a connection part is extremely high, and the connection part is easy to damage.

Disclosure of Invention

The to-be-solved technical problem of the utility model is weak point to prior art exists, an overload flexible connection device is provided, the device uses between arm and jack catch, be equipped with the flexonics, jack catch that has effectively avoided leading to because transship with wait to snatch and collide with the jack catch that causes between nothing and damage, jack catch life is improved, utilize the flexonics between jack catch and the arm, can snatch the size of article quality according to the jack catch, realize automatically regulated, effectively protected the connecting portion between jack catch and the arm, and service life is prolonged.

The technical solution of the utility model is that, a following flexible connection device transships is provided, include the seat of honour that is connected with the arm, the lower seat of being connected with the jack catch, be equipped with air spring between seat of honour and the lower seat.

Preferably, the upper part of the air spring is connected with the upper seat through a screw, and the lower part of the air spring is connected with the lower seat through a screw.

Preferably, the upper seat and the lower seat are axially rotatable and the upper seat and the lower seat are axially movable.

Preferably, a limiting device for limiting the separation between the upper seat and the lower seat is arranged between the upper seat and the lower seat.

Preferably, the limiting device comprises a limiting cylinder body which is arranged on the upper seat and extends downwards, the bottom of the limiting cylinder body is a through hole, and the bottom of the limiting cylinder body is a taper hole.

Preferably, the lower seat is provided with a limiting guide body which can be inserted into the limiting cylinder, and the limiting guide body is provided with a conical surface matched with the conical hole.

Preferably, the limiting guide body and the lower seat are in a split structure and are connected through one or more of a screw, a pin shaft, a bolt and a connecting rod.

Preferably, a sealing cover is arranged at the end part of the upper seat top limiting cylinder body.

Preferably, the sealing cover and the opening part of the limiting cylinder body are provided with sealing rings.

Preferably, the lower seat is provided with an air inlet communicated with the interior of the air spring.

The beneficial effects of the technical scheme are as follows: the device is used between arm and jack catch, is equipped with flexonics, has effectively avoided because the jack catch that transships and the jack catch damage that causes of colliding with between the thing of waiting to snatch because of overloading, improves jack catch life, utilizes the flexonics between jack catch and the arm, can snatch the size of article quality according to the jack catch, realizes automatically regulated, has effectively protected the connecting portion between jack catch and the arm, improves life.

The device is not only applied to a manipulator, but also can be used in other places needing flexible connection.

Drawings

Fig. 1 is a schematic structural view of an overload flexible connection device.

Fig. 2 is a cross-sectional view taken at a-a in fig. 1.

Fig. 3 is a perspective view of fig. 1.

Detailed Description

For convenience of explanation, the overload flexible connecting device of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, an overload flexible connecting device includes an upper seat 1 connected to a robot arm, and a lower seat 2 connected to a jaw, where the upper seat and the lower seat are not only connected to the robot arm and the jaw, but in this embodiment, a robot is taken as an example, so that the upper seat is connected to the robot arm, the lower seat is connected to the jaw, an air spring 3 is disposed between the upper seat 1 and the lower seat 2, the upper portion of the air spring 3 is connected to the upper seat 1 through a screw, and the lower portion of the air spring 3 is connected to the lower seat 2 through a screw; the upper seat 1 and the lower seat 2 can axially rotate, and the upper seat 1 and the lower seat 2 can axially move; a limiting device for limiting the separation between the upper seat 1 and the lower seat 2 is arranged between the upper seat 1 and the lower seat 2, the upper seat is connected with a mechanical arm by using the flexible connecting device, the lower seat is connected with a clamping jaw, and the clamping jaw is flexibly connected with the mechanical arm from the traditional rigid connection, so that the service life is prolonged.

The limiting device comprises a limiting cylinder 4 which is arranged on the upper seat 1 and extends downwards, the upper part of the limiting cylinder 4 is provided with a through hole 4.1, and the bottom of the limiting cylinder is provided with a taper hole 4.2; and the lower seat 2 is provided with a limiting guide body 5 which can be inserted into the limiting cylinder body 4. Spacing barrel not only will prevent breaking away from of lower seat and seat of honour, effectively provides a flexonics in addition, when meetting the circumstances such as colliding with, utilizes air spring elastic deformation to realize the jack catch position change, prevents that the jack catch from touchhing hard object and damaging. The existing guide effect of spacing guide body, spacing effect in addition, the direction utilizes ware axial dimensions to be less than spacing barrel size, and is rotatable and reciprocate, of course, be equipped with on the spacing guide body 5 with the taper surface of taper hole 4.2 complex, the downstream has certain position restriction.

In order to facilitate the installation of the limiting guide body into the limiting cylinder, the limiting guide body 5 and the lower seat 2 are of a split structure and are connected through one or more of a screw, a pin shaft, a bolt and a connecting rod; as shown in the figure, a long screw can be inserted from the bottom of the lower seat to directly lock the limiting guide body and the base into a whole, a connecting rod with steps and external threads can also be directly processed on the base, a screw hole is processed on the limiting guide body, and the limiting guide body is screwed in a self-transmission manner, so that the limiting guide body and the lower seat are connected into a whole.

The end part of the upper seat 1 top limiting cylinder body 4 is provided with a sealing cover 6, lubricating oil is coated in the limiting cylinder body for preventing abrasion, the sealing cover 6 and the opening part of the limiting cylinder body 4 are provided with a sealing ring 7, and oil overflow is prevented. In addition, the sealing cover also has the function of limiting the upward movement distance of the limiting guide body, and prevents dust from entering the sealing cover, so that impurities are prevented from rubbing the limiting guide body and the limiting cylinder body.

And the lower seat 2 is provided with an air inlet 8 communicated with the interior of the air spring 3.

The working principle is as follows: the air spring is charged with compressed air through the air inlet hole, the compressed air pressure is regulated steplessly through the proportional pressure valve, the prior art is adopted, and how to regulate the air pressure steplessly through the proportional pressure valve is not repeated, so that the elastic force of the air spring is steplessly adjustable, the conical hole of the upper seat is matched and connected with the conical surface on the limiting guide body of the lower seat, the conical hole is tensioned through the air spring, the spring force can regulate the joint force of the conical surfaces of the upper seat and the lower seat, and the joint force is the load which can be borne by the upper seat and the lower seat.

The air spring is compressed when the load exceeds the rigid connection force, the conical surface is separated, after the conical surface is separated, the air spring has moving spaces in X, Y, Z directions, the rotation, the up-and-down movement and the like can be realized, and at the moment, the device is changed into a flexible connector.

Therefore, the device enables the claws and the mechanical arm connected with the upper seat and the lower seat to move in three-dimensional directions and to be changed into flexibility from rigidity. It is stated again that the invention is not only applicable to a manipulator and a jaw, but also to other devices requiring a flexible connection.

Meanwhile, the air pressure and the on-off of the air can be controlled to switch the device between rigidity and flexibility, so that the working requirements of different periods and different states are met.

In the above embodiments, the best mode of the present invention has been described, it is obvious that many changes can be made under the inventive concept of the present invention, and it should be noted that any changes made under the inventive concept of the present invention will fall within the protective scope of the present invention.

Claims (5)

1. An overload flexible connection device is characterized in that: comprises an upper seat (1) connected with a mechanical arm and a lower seat (2) connected with a clamping jaw, wherein an air spring (3) is arranged between the upper seat (1) and the lower seat (2), the upper part of the air spring (3) is connected with the upper seat (1) through a screw, the lower part of the air spring (3) is connected with the lower seat (2) through a screw, the upper seat (1) and the lower seat (2) can axially rotate, the upper seat (1) and the lower seat (2) can axially move, a limiting device for limiting the separation between the upper seat (1) and the lower seat (2) is arranged between the upper seat (1) and the lower seat (2), the limiting device comprises a limiting cylinder body (4) which is arranged on the upper seat (1) and extends downwards, the bottom of the limiting cylinder body (4) is a through hole (4.1), the bottom of the limiting cylinder body is a taper hole (4.2), and a limiting guide body (5) which can be inserted into the limiting cylinder body (4) is arranged on the lower seat (2), the limiting guide body (5) is provided with a conical surface matched with the conical hole (4.2).

2. The overloaded flexible connection device of claim 1, wherein: the limiting guide body (5) and the lower seat (2) are of a split structure and are connected through one or more of a screw, a pin shaft, a bolt and a connecting rod.

3. The overloaded flexible connection device of claim 1, wherein: the end part of the upper seat (1) top limiting cylinder body (4) is provided with a sealing cover (6).

4. The overloaded flexible connection device of claim 3, wherein: and sealing rings (7) are arranged at the opening parts of the sealing cover (6) and the limiting cylinder body (4).

5. The overloaded flexible connection device of claim 1, wherein: and the lower seat (2) is provided with an air inlet (8) communicated with the interior of the air spring (3).

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