CN213730134U

CN213730134U - Integral pneumatic chuck

Info

Publication number: CN213730134U
Application number: CN202021870493.1U
Authority: CN
Inventors: 石利军
Original assignee: Changzhou Dairuike Mechanical And Electrical Technology Co ltd
Current assignee: Changzhou Dairuike Mechanical And Electrical Technology Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-07-20
Anticipated expiration: 2030-08-31

Abstract

The utility model discloses an integral pneumatic chuck, which comprises a base and a rotating body which is arranged in the base and rotates around the rotating body, wherein a chuck body is fixedly arranged at the front end of the rotating body, a plurality of jaw mechanisms which slide along the radial direction of the chuck are symmetrically arranged at the front end of the chuck body, and a driving mechanism which is suitable for driving the jaw mechanisms to move away from or together is arranged in the rotating body; the rear end of the rotating body is provided with an air path distributor; the driving mechanism comprises an air cylinder and a transmission mechanism, the air cylinder is arranged in the rotary body in a sliding mode, the front end of the air cylinder is connected with the jaw mechanism through the transmission mechanism, and the rear end of the air cylinder is connected with the air channel distributor. The utility model discloses realize the function of jack catch centre gripping tails under the prerequisite that does not increase jack catch axial dimension, solved general chuck on the market because L type jack catch hangs out too long, jack catch distal end clamp force and the poor problem of tight precision of clamp.

Description

Integral pneumatic chuck

Technical Field

The utility model relates to an air chuck field especially relates to an integral air chuck.

Background

Laser cutting is the most important application technology in the laser processing industry, and has the characteristics of high speed, high precision, no deformation of workpieces and the like, so that the laser cutting technology is widely applied to the fields of automobiles, rolling stock manufacturing, aviation, chemical engineering, light industry, electrical appliances, electronics, petroleum, metallurgy and the like. In recent years, laser cutting technology has developed rapidly, and the laser cutting technology has increased at a rate of 20% to 30% every year internationally. China has increased more than 25% per year since 1985. Because the laser industry foundation in China is poor, the application of the laser processing technology is not common, the overall level of laser processing is still far from the advanced state, and the obstacles and the defects are believed to be solved along with the continuous progress of the laser processing technology. The laser cutting technology is bound to become an important pipe processing means indispensable in the 21 st century. The wide application market of laser cutting processing and the rapid development of modern science and technology enable domestic and foreign science and technology workers to conduct continuous research on laser cutting processing technology, and the laser cutting technology is promoted to develop continuously forward.

The pneumatic chuck is used as an important accessory of the laser pipe cutting machine and the laser pipe plate all-in-one machine, can clamp and clamp workpieces according to the shape of a pipe, and meets the requirements of parts with different shapes. The existing chuck needs to use lengthened clamping jaws, such as L-shaped clamping jaws, to clamp tailings, the structure can cause the phenomenon that the clamping force of the far end of each clamping jaw is attenuated, so that a part is not clamped tightly, the center of the part is easy to deviate from the axis of the chuck, the clamping precision is low, and hidden troubles are buried for subsequent production.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an integral pneumatic chuck to prior art's weak point, solved general chuck on the market because L type jack catch hangs out too long, jack catch distal end clamp force and the poor problem of tight precision of clamp.

Realize the utility model discloses purpose technical scheme is:

an integral pneumatic chuck comprises a base and a rotating body which is arranged in the base and rotates around the base, wherein a chuck body is fixedly arranged at the front end of the rotating body, a plurality of jaw mechanisms which slide along the radial direction of the chuck are symmetrically arranged at the front end of the chuck body, and a driving mechanism which is suitable for driving the jaw mechanisms to move away from or together is arranged in the rotating body; the rear end of the rotating body is provided with an air path distributor; the driving mechanism comprises an air cylinder and a transmission mechanism, the air cylinder is arranged in the rotary body in a sliding mode, the front end of the air cylinder is connected with the jaw mechanism through the transmission mechanism, and the rear end of the air cylinder is connected with the air channel distributor.

Furthermore, the transmission mechanism comprises an inner connecting sleeve coaxially and fixedly arranged at the front end of the piston rod of the air cylinder and an outer connecting sleeve coaxially sleeved outside the inner connecting sleeve and fixedly arranged at the front end of the cylinder body of the air cylinder; the front ends of the inner connecting sleeve and the outer connecting sleeve are both movably provided with a connecting rod mechanism, and the front end of the connecting rod mechanism is movably connected with the jaw mechanism.

Further, the inner ring of the base is provided with double bearings, the rotating body is installed in the base through the double bearings, and spacer bushes are coaxially arranged between the double bearings.

Further, the rotating body comprises a housing and a back cover plate; the rear part of the outer cover is arranged in the inner ring of the double bearing in a penetrating way and is fixedly connected with the double bearing through the rear cover plate; the rear part of the rear cover plate is fixedly sleeved with a driven wheel.

Furthermore, a shell which is covered outside the driven wheel is fixedly arranged at the rear end of the base; and a proximity switch is fixedly arranged on the shell, and a bolt matched with the proximity switch is arranged on the driven wheel.

Furthermore, an inspection cover is arranged on the shell.

Furthermore, the shell is provided with an anti-rotation plate fixedly connected with the air path distributor.

Furthermore, a speed reducer matched with the driven wheel is fixedly arranged on the shell.

Furthermore, a hanging ring is fixedly arranged at the top of the base.

Furthermore, a baffle is fixedly arranged at the front end of the chuck body.

Furthermore, a hanging ring is fixedly arranged at the top of the base.

By adopting the technical scheme, the utility model discloses following beneficial effect has:

(1) the utility model discloses a set up cylinder and drive mechanism in rotatory body to change the axial displacement of cylinder into the radial displacement of the jack catch mechanism that links to each other with drive mechanism, make jack catch mechanism move apart from and coincide, realize the function of jack catch centre gripping tails under the prerequisite that does not increase jack catch axial dimension, solved general chuck in the market because L type jack catch hangs out too long, the problem that jack catch distal end clamp force and clamping accuracy are poor; in addition, under the prerequisite of guaranteeing design centre gripping scope, the utility model discloses can stretch into supporting leading cavity chuck in, practice thrift the processing tails in the at utmost, can keep the clamp force simultaneously again.

(2) The utility model discloses a drive mechanism adopt with cylinder fixed connection's inside and outside adapter sleeve and with inside and outside adapter sleeve and jack catch mechanism swing joint's link mechanism, realize that cylinder axial motion is transformed into jack catch mechanism's radial movement, structural design is ingenious, and the transmission is stable.

(3) The utility model discloses a rotatory body passes through the duplex bearing and installs in the base, reduces the circle of rotatory body and beats, ensures to rotate steadily.

(4) The utility model discloses a fixed proximity switch that is equipped with on the casing is equipped with and proximity switch assorted bolt from the driving wheel to response and the rotation angle of the synchronous pivoted chuck body from the driving wheel satisfy the tubular product cutting demand of special angle.

(5) The utility model discloses a be equipped with the inspection lid on the casing, be convenient for detect the inside driven wheel of casing.

(6) The utility model discloses a still be equipped with on the casing with gas circuit distributor fixed connection's rotation prevention plate, avoid the gas circuit distributor to follow the chuck body and rotate, influence being connected of gas circuit distributor and external air supply.

(7) The utility model discloses a fixed being equipped with on the casing and following driving wheel matched with speed reducer, the speed reducer has been assembled in advance, and it is more convenient to use, avoids exposing outside from the driving wheel, has improved the holistic dustproof effect of chuck greatly.

(8) The utility model discloses the fixed baffle that is equipped with in chuck body front end effectively avoids the jack catch mechanism of symmetry setting to collide each other, keeps safe distance.

(9) The utility model discloses a fixed rings that are equipped with in base top, the position of being convenient for hoist transportation and removal chuck.

Drawings

In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings, in which:

fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the present invention.

The reference numbers in the drawings are:

the device comprises a base 1, a rotating body 2, an outer cover 2-1, a rear cover plate 2-2, a chuck body 3, a baffle 3-1, a mounting boss 3-2, a jaw mechanism 4, a driving mechanism 5, an air cylinder 5-1, a transmission mechanism 5-2, an inner connecting sleeve 5-2-1, an outer connecting sleeve 5-2-2, a connecting rod 5-2-3, a hinge plate 5-2-4, an air path distributor 6, a double bearing 7, a spacer sleeve 8, a lifting ring 9, a driven wheel 10, a shell 11, a proximity switch 12, an inspection cover 13, an anti-collision plate 14 and a speed reducer 15.

Detailed Description

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.

(example 1)

Referring to fig. 1 to 2, the integral type air chuck of the present embodiment includes a base 1 and a rotating body 2 disposed in the base and rotating around itself. The rotating body 2 comprises an outer cover 2-1 and a rear cover plate 2-2, a chuck body 3 is fixedly arranged at the front end of the outer cover 2-1, and four groups of jaw mechanisms 4 which slide along the radial direction of the chuck are uniformly arranged at the front end of the chuck body 3. The central position of the front end of the chuck body 3 is also fixedly provided with a baffle 3-1, and the rear end is evenly provided with four mounting bosses 3-2. A driving mechanism 5 which is suitable for driving the plurality of jaw mechanisms 4 to move away from or together is arranged in the rotating body 2; the rear end of the rear cover plate 2-2 is fixedly provided with an air path distributor 6.

The driving mechanism 5 comprises an air cylinder 5-1 and a transmission mechanism 5-2, the front end of the air cylinder 5-1 is connected with the jaw mechanism 4 through the transmission mechanism 5-2, and the rear end is connected with the air channel distributor 6. The transmission mechanism 5-2 comprises an inner connecting sleeve 5-2-1 coaxially and fixedly arranged at the front end of a piston rod of the air cylinder 5-1 and an outer connecting sleeve 5-2-2 coaxially sleeved outside the inner connecting sleeve 5-2-1 and fixedly arranged at the front end of a cylinder body of the air cylinder 5-1. The front ends of the inner connecting sleeve 5-2-1 and the outer connecting sleeve 5-2-2 are provided with link mechanisms. The outer diameter of the outer connecting sleeve 5-2-2 is larger than that of the air cylinder 5-1, and the outer connecting sleeve 5-2-2 is in sliding fit with the inner wall of the outer cover 2-1, and the sliding friction force between the outer connecting sleeve 5-2-2 and the inner wall of the outer cover 2-1 is larger than that between the piston rod of the air cylinder and the inner wall of the air cylinder 5-1 and smaller than the clamping force of the jaw mechanism 4.

The connecting rod mechanism is provided with four groups, including connecting rods 5-2-3 and hinge plates 5-2-4, the connecting rods 5-2-3 are rotatably arranged on the mounting boss 3-2 at the rear end of the chuck body 3 through connecting pins, the front ends of the connecting rods 5-2-3 are movably connected with the claw mechanism 4, and the rear ends of the connecting rods 5-2-3 and the front ends of the hinge plates 5-2-4 are hinged with each other through the connecting pins. The rear ends of two groups of symmetrically arranged hinge plates 5-2-4 are respectively and movably connected with the inner connecting sleeve 5-2-1 through connecting pins, and the rear ends of the other two groups of symmetrically arranged hinge plates 5-2-4 are respectively and movably connected with the outer connecting sleeve 5-2-2 through connecting pins.

In order to reduce the circular run-out of the rotating body 2 and ensure stable rotation, the inner ring of the base 1 is provided with double bearings 7, the rotating body 2 is installed in the base 1 through the double bearings 7, and a spacer 8 is coaxially arranged between the double bearings 7. The top of the base 1 is fixedly provided with a lifting ring 9. The rear part of the outer cover 2-1 is arranged in the inner ring of the double bearing 7 in a penetrating way and is fixedly connected with the double bearing 7 through the rear cover plate 2-2; the driven wheel 10 is fixedly sleeved at the rear part of the rear cover plate 2-2. A shell 11 covering the driven wheel 10 is fixedly arranged at the rear end of the base 1; the shell 11 is fixedly provided with a proximity switch 12, and the driven wheel 10 is provided with a bolt matched with the proximity switch 12, so that the rotation angle of the chuck body 3 synchronously rotating with the driven wheel 10 is sensed, and the requirement of cutting pipes at special angles is met.

The housing 11 is provided with an inspection cover 13, an impact prevention plate 14, and a reduction gear 15. By providing the inspection cover 13, it is convenient to inspect the driven wheel 10 inside the housing 11. The rotation preventing plate 14 is fixedly connected with the air path distributor 6, so that the air path distributor 6 is prevented from rotating along with the chuck body 3, and the influence on the connection of the air path distributor 6 and an external air source is avoided. The speed reducer 15 is matched with the driven wheel 10 and drives the driven wheel 10 to rotate, the speed reducer 15 is assembled in advance, the use is more convenient, the driven wheel 10 is prevented from being exposed, and the integral dustproof effect of the chuck is greatly improved.

The working principle of the embodiment is as follows:

the reducer 15 drives the driven wheel 10 to rotate, so as to drive the rear cover plate 2-2 and the outer cover 2-1 to rotate, further drive the chuck body 3 to rotate, and realize the rotation motion of the chuck.

An external air source is connected with an air cylinder 5-1 in the rotating body 2 through an air path distributor 6 to provide power for the air cylinder 5-1, the sliding friction force between the external connecting sleeve 5-2-2 and the inner wall of the outer cover 2-1 is larger than the sliding friction force between the piston rod and the inner wall of the air cylinder 5-1, the piston rod of the air cylinder moves forwards to drive the internal connecting sleeve 5-2-1 fixedly connected with the piston rod to move forwards, and the front end of the chuck body 3 is driven to carry out the corresponding movement on the claw mechanisms 4 which are symmetrically arranged through two groups of connecting rods 5-2-3 and hinge plates 5-2-4. After the part is clamped, the air source continuously provides power for the air cylinder 5-1, the piston rod continuously moves forwards, and as the sliding friction force between the outer connecting sleeve 5-2-2 and the inner wall of the outer cover 2-1 is smaller than the clamping force of the jaw mechanism 4, the cylinder body of the air cylinder drives the outer connecting sleeve 5-2-2 to move backwards under the reaction force of the piston rod, so that the other group of connecting rods 5-2-3 and the hinge plate 5-2-4 drive the other group of symmetrically arranged jaw mechanisms 4 at the front end of the chuck body 3 to move in a combined manner, and the combined movement of the four groups of jaw mechanisms 4 is realized. On the contrary, the four groups of jaw mechanisms 4 move away from each other.

In the embodiment, the cylinder 5-1 and the transmission mechanism 5-2 are arranged in the rotating body 2, so that the axial movement of the cylinder 5-1 is converted into the radial movement of the jaw mechanism 4 connected with the transmission mechanism 5-2, the jaw mechanisms 4 move away from and together, the function of clamping tails by jaws is realized on the premise of not increasing the axial size of the jaws, and the problems of long overhang of L-shaped jaws, poor clamping force at the far ends of the jaws and poor clamping precision of a universal chuck in the market are solved; in addition, under the prerequisite of guaranteeing design centre gripping scope, the utility model discloses can stretch into supporting leading cavity chuck in, practice thrift the processing tails in the at utmost, can keep the clamp force simultaneously again.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. An integral pneumatic chuck, comprising: the chuck comprises a base (1) and a rotating body (2) which is arranged in the base (1) and rotates around the rotating body, wherein a chuck body (3) is fixedly arranged at the front end of the rotating body (2), a plurality of jaw mechanisms (4) which slide along the radial direction of a chuck are symmetrically arranged at the front end of the chuck body (3), and a driving mechanism (5) which is suitable for driving the jaw mechanisms (4) to move away from or together is arranged in the rotating body (2); the rear end of the rotating body (2) is provided with an air channel distributor (6); the driving mechanism (5) comprises an air cylinder (5-1) and a transmission mechanism (5-2), the air cylinder (5-1) is arranged in the rotating body (2) in a sliding mode, the front end of the air cylinder (5-1) is connected with the jaw mechanism (4) through the transmission mechanism (5-2), and the rear end of the air cylinder is connected with the air channel distributor (6).

2. The one-piece pneumatic chuck of claim 1, wherein: the transmission mechanism (5-2) comprises an inner connecting sleeve (5-2-1) which is coaxially and fixedly arranged at the front end of a piston rod of the air cylinder (5-1) and an outer connecting sleeve (5-2-2) which is coaxially sleeved outside the inner connecting sleeve (5-2-1) and fixedly arranged at the front end of a cylinder body of the air cylinder (5-1); the front ends of the inner connecting sleeve (5-2-1) and the outer connecting sleeve (5-2-2) are respectively and movably provided with a connecting rod mechanism, and the front end of the connecting rod mechanism is movably connected with the jaw mechanism (4).

3. The one-piece pneumatic chuck of claim 1, wherein: the inner ring of the base (1) is provided with double bearings (7), the rotating body (2) is installed in the base (1) through the double bearings (7), and a spacer sleeve (8) is coaxially arranged between the double bearings (7).

4. A one-piece pneumatic chuck according to claim 3, wherein: the rotating body (2) comprises an outer cover (2-1) and a rear cover plate (2-2); the rear part of the outer cover (2-1) is arranged in the inner ring of the double bearing (7) in a penetrating way and is fixedly connected with the double bearing (7) through the rear cover plate (2-2); the rear part of the rear cover plate (2-2) is fixedly sleeved with a driven wheel (10).

5. The one-piece pneumatic chuck of claim 4, wherein: a shell (11) covered outside the driven wheel (10) is fixedly arranged at the rear end of the base (1); a proximity switch (12) is fixedly arranged on the shell (11), and a bolt matched with the proximity switch (12) is arranged on the driven wheel (10).

6. The one-piece pneumatic chuck of claim 5, wherein: an inspection cover (13) is arranged on the shell (11).

7. The one-piece pneumatic chuck of claim 5, wherein: and the shell (11) is provided with an anti-rotation plate (14) fixedly connected with the gas path distributor (6).

8. The one-piece pneumatic chuck of claim 5, wherein: and a speed reducer (15) matched with the driven wheel (10) is fixedly arranged on the shell (11).

9. The one-piece pneumatic chuck of claim 1, wherein: the front end of the chuck body (3) is fixedly provided with a baffle (3-1).

10. The one-piece pneumatic chuck of claim 1, wherein: the top of the base (1) is fixedly provided with a lifting ring (9).