CN210059853U

CN210059853U - Pneumatic double-acting full-stroke chuck

Info

Publication number: CN210059853U
Application number: CN201920809755.4U
Authority: CN
Inventors: 刘洪栋; 刘中华
Original assignee: Changzhou Youteka Machinery Co Ltd
Current assignee: Changzhou Youteka Machinery Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2020-02-14
Anticipated expiration: 2029-05-30

Abstract

The utility model relates to a pneumatic double-acting full stroke chuck, comprising a seat plate, and install the two-layer centre gripping subassembly on the bedplate with crisscross direction, the center of bedplate is provided with the through-hole, every layer of centre gripping subassembly includes two clamping bars of relative parallel arrangement respectively, and the side that two clamping bars deviate from mutually all is connected with the cylinder, the both ends of clamping bar be provided with respectively with the two-way lead screw of clamping bar vertically, the inboard of two-way lead screw is provided with the guide bar rather than being parallel, two clamping bars of same centre gripping subassembly are located the tip of homonymy and link to each other with same guide bar and two-way lead screw, the cylinder can drive two clamping bars and move in opposite directions or back on the back of the body on. The utility model discloses owing to adopt the cylinder to provide the power that presss from both sides tightly and loosen for the clamping bar, compare in the motor, the stability of cylinder is good, and the fault rate is low in the use, can reduce the cost of later maintenance.

Description

Pneumatic double-acting full-stroke chuck

Technical Field

The utility model belongs to the technical field of the pipe fitting anchor clamps, concretely relates to pneumatic double acting full stroke chuck.

Background

When the pipe is cut off and welded, the pipe needs to be fixed by using equipment such as a chuck and the like, and then the pipe needs to be welded or cut off.

The existing pipe fitting chuck is characterized in that two layers of clamping assemblies are installed on a seat plate, each group of clamping assemblies comprises two oppositely-arranged clamping rods, two ends of each clamping rod are connected to a bidirectional screw rod, the bidirectional screw rods are connected with a motor through gear assemblies to drive the bidirectional screw rods to rotate, and then the clamping rods are driven to move oppositely or back to back.

However, the chuck is driven by the motor, the stability is poor, the failure rate is high in the using process, the later maintenance cost is high, the clamping rod needs to be moved through the transmission of the gear assembly, the number of parts of the whole structure is large, and the failure rate in the later period is further increased. In addition, the clamping rod drives the bidirectional screw rod to rotate through gear transmission to realize indirect drive type work, and clamping precision of the chuck can be influenced to a certain extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a pneumatic double-acting full stroke chuck to solve the problem that chuck poor stability, fault rate are high.

The utility model discloses a pneumatic double-acting full stroke chuck is realized like this:

the utility model provides a pneumatic double-acting full stroke chuck, includes the bedplate to and install with crisscross direction two-layer centre gripping subassembly on the bedplate, the center of bedplate is provided with the mounting hole, every layer centre gripping subassembly include two clamping bars of relative parallel arrangement respectively, and the side that two clamping bars deviate from mutually all is connected with the cylinder, the both ends of clamping bar be provided with respectively with clamping bar vertically two-way lead screw, the inboard of two-way lead screw is provided with the guide bar rather than being parallel, and two clamping bars of same centre gripping subassembly are located the tip of homonymy and link to each other with same guide bar and two-way lead screw, the cylinder can drive two clamping bars of same centre gripping subassembly and move in opposite directions or back on guide bar and two-way lead screw.

Furthermore, the two layers of clamping components are arranged perpendicular to each other.

Furthermore, each two-way screw rod is provided with two screw rod nuts, and the end parts at the same side of the two clamping rods of the same clamping assembly are detachably connected with the two screw rod nuts on the same two-way screw rod respectively.

Furthermore, each guide rod is provided with two linear bearings, and the ends of the same side of the two clamping rods of the same clamping assembly are detachably connected with the two linear bearings on the same guide rod respectively.

Furthermore, both ends of the clamping rod are provided with a screw nut matching hole and a linear bearing matching hole, the screw nut is installed in the screw nut matching hole, and the linear bearing is installed in the linear bearing matching hole.

Furthermore, a through gap is formed between the screw rod nut matching hole and the linear bearing matching hole, a through hole is formed in the upper portion of the through gap, a threaded hole matched with the through hole is formed in the lower portion of the through gap, a bolt is installed in the through hole, and the bottom of the bolt penetrates through the through gap and is screwed into the threaded hole.

Furthermore, the thread directions of the two-way screw rods at the two ends of the same clamping rod are opposite.

Furthermore, two ends of the bidirectional screw rod are respectively installed on the seat plate through bearing seats.

Furthermore, two ends of the guide rod are respectively installed on the seat plate through fixing seats.

Furthermore, the opposite side surfaces of the two clamping rods in the same clamping assembly are provided with roller clamping jaws, and each roller clamping jaw comprises a roller seat connected with the clamping rod through a bolt and a roller rotatably arranged on the roller seat.

After the technical scheme is adopted, the utility model discloses the beneficial effect who has does:

(1) the utility model adopts the cylinder to provide clamping and loosening power for the clamping rod, compared with the motor, the cylinder has good stability and low failure rate in the use process, and can reduce the cost of later maintenance;

(2) the utility model adopts the cylinder to directly provide power for the clamping rods, and the bidirectional screw rod not only has the synchronous function of the two opposite clamping rods, but also has the guiding function, so that the clamping precision of the chuck can be increased, the number of parts is reduced, and the failure rate of the whole chuck is further reduced;

(3) the utility model discloses well every clamping bar all adopts two-way lead screw and guide bar to carry out dual guide effect, can improve the precision of clamping bar centre gripping.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is a cross-sectional view of a preferred embodiment of the present invention showing the jaws in the direction I when the pneumatic double-acting full stroke chuck is in a clamped state;

FIG. 2 is a cross-sectional view of the jaws II in the clamping position of the pneumatic double-acting full stroke chuck in accordance with the preferred embodiment of the present invention;

FIG. 3 is a cross-sectional view of the preferred embodiment of the present invention showing the jaws I in the disengaged position of the pneumatic double-acting full stroke chuck;

FIG. 4 is a cross-sectional view of the preferred embodiment of the present invention showing the direction of the jaws II in the released state of the pneumatic double-acting full stroke chuck;

in the figure: the clamping device comprises a seat plate 1, a mounting hole 2, a clamping rod 3, an air cylinder 4, a bidirectional screw rod 5, a guide rod 6, a screw nut 7, a linear bearing 8, a screw nut matching hole 9, a linear bearing matching hole 10, a penetrating gap 11, a through hole 12, a threaded hole 13, a bearing seat 14, a fixed seat 15, a roller clamping jaw 16, a roller seat 17, a roller 18, a bolt hole 19, a screw hole 20, an embedding groove 21 and a rotating shaft 22.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-4, a pneumatic double-acting full-stroke chuck comprises a seat plate 1 and two layers of clamping assemblies arranged on the seat plate 1 in a staggered direction, wherein a mounting hole 2 is formed in the center of the seat plate 1, each layer of clamping assembly comprises two clamping rods 3 arranged in parallel relatively, the side faces of the two clamping rods 3 deviating from each other are connected with a cylinder 4, two ends of each clamping rod 3 are respectively provided with a bidirectional screw rod 5 perpendicular to the corresponding clamping rod 3, the inner side of each bidirectional screw rod 5 is provided with a guide rod 6 parallel to the corresponding clamping rod, the end parts of the two clamping rods 3 of the same clamping assembly, which are located on the same side, are connected with the same guide rod 6 and the same bidirectional screw rod 5, and the cylinders 4 can drive the two clamping rods 3 of the same clamping assembly to move in the opposite directions or back to back on the.

Preferably, the cylinder 4 is mounted on the seat plate 1 by a cylinder block.

In the process of clamping the pipe fitting, in order to ensure the stability of the pipe fitting, the two layers of clamping components are arranged in a mutually perpendicular mode.

The two-way screw rods 5 are arranged to guide the clamping rods 3 and ensure the synchronous movement of the clamping rods 3, and in order to realize the synchronous movement of the clamping rods 3 connected with the same two-way screw rod 5, two screw rod nuts 7 are arranged on each two-way screw rod 5, and the end parts at the same side of the two clamping rods 3 of the same clamping assembly are respectively detachably connected with the two screw rod nuts 7 on the same two-way screw rod 5.

Specifically, each two-way screw rod 5 is provided with threads in two directions, the two screw rod nuts 7 are respectively matched with the threads in the two directions, and in the rotating process of the two-way screw rod 5, the two clamping rods 3 connected with the screw rod nuts 7 of the two-way screw rod 5 can synchronously move in the opposite directions or move in the opposite directions.

The guide rod 6 is used for guiding the movement of the clamping rods 3, so that the clamping precision of the clamping rods is improved, the two clamping rods 3 which are oppositely arranged are connected with the same guide rod 6 conveniently, two linear bearings 8 are arranged on each guide rod 6, and the end parts, on the same side, of the two clamping rods 3 of the same clamping assembly are detachably connected with the two linear bearings 8 on the same guide rod 6 respectively.

In order to conveniently match and connect the clamping rod 3 with the screw nut 7 and the linear bearing 8, both ends of the clamping rod 3 are provided with a screw nut matching hole 9 and a linear bearing matching hole 10, the screw nut 7 is installed in the screw nut matching hole 9, and the linear bearing 8 is installed in the linear bearing matching hole 10.

In the present embodiment, since the guide bar 6 is provided inside the bidirectional screw 5, the linear bearing fitting hole 10 is also provided inside the screw nut fitting hole 9.

Referring to fig. 3, after the lead screw nut 7 and the linear bearing 8 are mounted on the clamping bar 3, since the lead screw nut 7 and the linear bearing 8 need to move synchronously with the clamping bar 3 in the moving process of the clamping bar 3, the lead screw nut 7 and the linear bearing 8 need to be fixed on the clamping bar 3, in this embodiment, a through gap 11 is provided between the lead screw nut fitting hole 9 and the linear bearing fitting hole 10, a through hole 12 is provided above the through gap 11, a threaded hole 13 fitted with the through hole 12 is provided below the through hole, a bolt is mounted in the through hole 12, and the bottom of the bolt is screwed into the threaded hole 13 through the through gap 11.

After the screw nut 7 is sleeved in the screw nut matching hole 9 and the linear bearing 8 is sleeved in the linear bearing matching hole 10, the bolt is arranged in the through hole 12 and is screwed downwards into the threaded hole 13, so that the screw nut 7 and the linear bearing 8 are locked in the matching holes respectively, and the firm connection between the screw nut 7 and the linear bearing 8 and the clamping rod 3 is realized.

In addition, the through gap 11 is matched and connected with the bolt, so that the clamping rod 3 can be conveniently disassembled, and the bidirectional screw rod 5, the guide rod 6 and the clamping rod 3 can be disassembled only by disassembling the bolt.

In order to ensure the parallelism of the clamping rods 3 in the moving process, the two ends of the clamping rods 3 need to move in the same direction and synchronously, so the thread directions of the two-way screw rods 5 at the two ends of the same clamping rod 3 are opposite.

In the process that the clamping rod 3 moves, the feed screw nut 7 can be driven to rotate to drive the bidirectional feed screw 5, and in order to ensure that the bidirectional feed screw 5 can rotate, two ends of the bidirectional feed screw 5 are respectively installed on the seat plate 1 through the bearing seats 14.

For the convenience of fixing the guide bar 6, two ends of the guide bar 6 are respectively installed on the seat plate 1 through fixing seats 15.

Referring to fig. 4, in the process of welding or cutting a pipe, the pipe often needs to be moved back and forth, the conventional chuck needs to completely loosen the pipe and clamp the pipe after the pipe is moved, and the operation is relatively complicated, in this embodiment, the opposite sides of two clamping bars 3 in the same clamping assembly are provided with roller clamping jaws 16, and each roller clamping jaw 16 comprises a roller seat 17 connected with the clamping bar 3 through a bolt and a roller 18 rotatably mounted on the roller seat 17.

Adopt the gyro wheel that this embodiment provided, can move certain distance with clamping bar 3 orientation the direction of loosening, reduce the power that holds that adds of gyro wheel 18 to the pipe fitting, utilize the rotation of gyro wheel 18 to carry out preceding or backward movement to the pipe fitting, gyro wheel 18 still has certain holding power to the pipe fitting this moment, can increase the convenience that the pipe fitting removed.

Preferably, the center of the clamping rod 3 is provided with a through bolt hole 19 in the moving direction thereof, and a bolt in the bolt hole 19 can pass through the bolt hole 19 to be connected with the piston rod of the cylinder 4, so that the clamping rod 3 and the cylinder 4 can be connected, and the assembly and disassembly are convenient.

The clamping rod 3 is provided with a plurality of screw holes 20 towards the direction of the roller seat 17, and the roller seat 17 is connected with the clamping rod 3 through screws.

The direction of the roller seat 17 departing from the clamping rod 3 is provided with an embedded groove 21, a rotating shaft 22 is arranged in the embedded groove 21, the roller 18 is rotatably arranged on the rotating shaft 22, and the pipe fitting can move forwards and backwards through the rotation of the roller 18.

Preferably, the surface of the roller 18 is subjected to high-frequency quenching treatment, so that the surface strength of the roller can be increased, and the service life of the roller can be prolonged.

In the process of clamping the pipe fitting, the pipe fitting penetrates through the mounting hole 2 and extends into the middle of every two opposite clamping rods 3, the air cylinder 4 connected with each clamping rod 3 is synchronously started, the piston rod of the air cylinder is controlled to synchronously extend out, the piston rod pushes the clamping rods 3 to move on the bidirectional screw rod 5 and the guide rod 6 in a pairwise opposite mode, namely, the clamping rods move towards the direction of the pipe fitting, and the four sides of the pipe fitting are synchronously clamped. When the pipe fitting is loosened, the piston rod of the control cylinder 4 is synchronously retracted, and then the pipe fitting can be loosened.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims

1. A pneumatic double-acting full-stroke chuck is characterized by comprising a seat plate (1) and two layers of clamping components which are arranged on the seat plate (1) in a staggered direction, the center of the seat board (1) is provided with a mounting hole (2), each layer of the clamping components respectively comprises two clamping rods (3) which are arranged in parallel relatively, and the sides of the two clamping rods (3) which are deviated from each other are both connected with a cylinder (4), two ends of the clamping rods (3) are respectively provided with a bidirectional screw rod (5) which is vertical to the clamping rods (3), the inner side of the bidirectional screw rod (5) is provided with a guide rod (6) parallel to the bidirectional screw rod, the end parts of the two clamping rods (3) of the same clamping assembly, which are positioned at the same side, are connected with the same guide rod (6) and the bidirectional screw rod (5), the cylinder (4) can drive the two clamping rods (3) of the same clamping assembly to move towards or away from each other on the guide rod (6) and the bidirectional screw rod (5).

2. A pneumatic double-action full-stroke chuck according to claim 1, wherein the two layers of clamping assemblies are arranged perpendicular to each other.

3. The pneumatic double-acting full-stroke chuck according to claim 1, wherein two lead screw nuts (7) are provided on each of the two-way lead screws (5), and the ends at the same side of the two clamping bars (3) of the same clamping assembly are detachably connected with the two lead screw nuts (7) on the same two-way lead screw (5), respectively.

4. Pneumatic double-action full-stroke chuck according to claim 3, wherein two linear bearings (8) are provided on each of said guide rods (6), and the ends of the same side of the two clamping rods (3) of the same clamping assembly are detachably connected to the two linear bearings (8) on the same guide rod (6), respectively.

5. Pneumatic double-acting full-stroke chuck according to claim 4, wherein the clamping bars (3) are provided at both ends with a screw nut fitting hole (9) and a linear bearing fitting hole (10), the screw nut (7) being mounted in the screw nut fitting hole (9) and the linear bearing (8) being mounted in the linear bearing fitting hole (10).

6. The pneumatic double-acting full-stroke chuck according to claim 5, wherein a through gap (11) is arranged between the screw nut matching hole (9) and the linear bearing matching hole (10), a through hole (12) is arranged above the through gap (11), a threaded hole (13) matched with the through hole (12) is arranged below the through gap, a bolt is installed in the through hole (12), and the bottom of the bolt is screwed into the threaded hole (13) through the through gap (11).

7. A pneumatic double-acting full-stroke chuck according to claim 1, characterised in that the two-way screws (5) at both ends of the same clamping bar are threaded in opposite directions.

8. Pneumatic double-acting full-stroke chuck according to claim 1, characterized in that the two-way lead screw (5) is mounted at both ends on the seat plate (1) by means of bearing blocks (14), respectively.

9. Pneumatic double-action full-stroke chuck according to claim 1, wherein the two ends of the guide rod are mounted on the seat plate (1) by means of respective fixing seats (15).

10. Pneumatic double-action full-stroke chuck according to claim 1, wherein the opposite sides of the two clamping bars (3) in the same clamping assembly are fitted with roller jaws (16), said roller jaws (16) comprising roller seats (17) bolted to the clamping bars (3) and rollers (18) rotatably mounted on said roller seats (17).