CN215145882U

CN215145882U - Pneumatic chuck

Info

Publication number: CN215145882U
Application number: CN202121266356.1U
Authority: CN
Inventors: 俞仁清; 俞雪清
Original assignee: Changzhou Liyuanheng Machinery Co ltd
Current assignee: Changzhou Liyuanheng Machinery Co ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2021-12-14
Anticipated expiration: 2031-06-07

Abstract

The utility model relates to the technical field of pneumatic chucks, in particular to a pneumatic chuck, which comprises a clamping component which is arranged on a base plate and supports or separates a workpiece, a fixing component is arranged at one end of the substrate, which is far away from the supporting component, of the workpiece, the fixing component comprises at least two fixing blocks, the fixed block surrounds the workpiece and forms a clamping area for clamping the workpiece, the base plate is provided with a control mechanism for controlling the fixed block to be relatively close to or far away from the workpiece and clamping or loosening the workpiece, when the pneumatic chuck of the utility model is used, the fixing component is arranged at one end of the base plate far away from the clamping component, the control mechanism controls the fixing block to relatively approach or far away, and the workpiece is clamped or loosened, so that the phenomenon that the workpiece left at the last is not clamped and cannot be machined is avoided.

Description

Pneumatic chuck

Technical Field

The utility model belongs to the technical field of pneumatic chuck technique and specifically relates to a pneumatic chuck is related to.

Background

The four-jaw automatic centering air chuck is a main component of a tube laser cutting machine tool. One end of a pipe workpiece is clamped by a rear clamp on a main shaft of the machine tool, the other end of the pipe workpiece is clamped and positioned by a four-jaw automatic centering pneumatic chuck arranged at the tail end of the machine tool, the pipe workpiece needs to penetrate through the four-jaw automatic centering pneumatic chuck, then is clamped and can rotate and move in a clamping state of the chuck, and then laser is focused by a cutting head to cut and discharge the pipe workpiece.

The existing pneumatic chuck only has a circumferential supporting function, and when the section is machined to the end, the pneumatic chuck cannot process the last section of tailing, and the last section of tailing cannot be clamped, so that the section is wasted, resources are wasted, and the production cost is increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the pneumatic chuck aims to solve the problems that the existing pneumatic chuck only has a circumferential supporting effect, the pneumatic chuck cannot process the last section of tailing when the section is processed to the end, the last section of tailing cannot be clamped, the section is wasted, resources are wasted, and the production cost is increased.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides an air chuck, is including setting up on the base plate and to the support of work piece or the centre gripping subassembly that breaks away from, the one end that lies in the work piece and keep away from the supporting component on the base plate is provided with fixed subassembly, fixed subassembly includes two at least fixed blocks, the fixed block centers on the work piece and forms the centre gripping district that is used for the centre gripping work piece, be provided with on the base plate and be used for controlling the fixed block and be close to relatively or the control mechanism who keeps away from to the realization carries out centre gripping or pine take off to the work piece.

The utility model discloses an one end of keeping away from the centre gripping subassembly on the base plate sets up fixed subassembly to be close to relatively or keep away from by control mechanism control fixed block, and realize carrying out the centre gripping to the work piece or the pine takes off, just so can not appear keeping somewhere at last work piece do not have the centre gripping and can't carry out the phenomenon of processing.

In order to better fix the workpiece, further, at least two groups of fixing assemblies are arranged, and the two groups of fixing assemblies are arranged along the axial direction of the workpiece. At least two sets of axial workpieces are arranged, and the workpieces are fixed in multiple directions, so that the workpieces are stable and reliable to fix.

In order to realize the control mechanism, further, the control mechanism comprises a first cylinder arranged on the substrate, and the fixed block is arranged on the extending end of the first cylinder. Through set up first cylinder on the base plate to the fixed block sets up on the extension end of first cylinder, thereby realizes control mechanism.

In order to support the workpiece, the clamping assemblies are arranged in two groups, the two groups of clamping assemblies are arranged in an orthogonal mode, and the two groups of clamping assemblies are not on the same plane. The workpiece is supported by two groups of supporting components which are orthogonally arranged on the base plate.

In order to realize the clamping assembly, further, every group the clamping assembly includes two pneumatic assemblies that set up relatively, two all be provided with supporting component on the pneumatic assembly, two sets of enclose between the supporting component on the pneumatic assembly and become the clamping area who is used for the work piece to pass through to two supporting components are drawn close relatively or are kept away from through pneumatic assembly control, thereby realize the support or break away from to the work piece. The two groups of pneumatic components drive the supporting components to be relatively close to or far away from each other, so that the workpiece is supported or separated.

In order to ensure that the displacement of the supporting component is stable and reliable and prevent the supporting component from deviating, further, a first guide component for guiding the displacement of the supporting component is arranged between the fixing components, the first guide component comprises a first guide shaft arranged between the two pneumatic components, and the supporting component is arranged on the first guide shaft in a sliding manner.

In order to realize the pneumatic assembly, further, the pneumatic assembly comprises a cylinder body, a primary piston rod and a secondary piston rod, a first piston matched with the primary piston is arranged in the cylinder body in a sliding mode, one end of the primary piston rod is arranged on the first piston, the other end of the primary piston rod protrudes out of the cylinder body, one end of the first piston extends inwards to the primary piston rod along the axial direction of the primary piston rod to form a slide way, a second piston matched with the slide way is arranged in the slide way, one end of the secondary piston rod is arranged on the second piston, the other end of the secondary piston rod protrudes out of the primary piston rod, a rodless cavity is formed between one end of the first piston, far away from the primary piston rod, one end of the second piston, far away from the secondary piston rod, and the cylinder body, a first rod cavity is formed between one end of the first piston, located between the secondary piston rod and the slide way, and a second rod cavity is formed between the second piston and the second piston, the piston is characterized in that a first through hole communicated with the first rod cavity is formed in the cylinder body, a second through hole communicated with the rodless cavity is formed in the cylinder body, and a third through hole communicated with the first rod cavity and the second rod cavity is formed in the first piston. The two-stage piston rods extend or contract simultaneously, so that the stroke of the pneumatic assembly is increased, and the stability and reliability of workpiece support are ensured.

To realize the support assembly, further, the support assembly includes a first roller shaft rotatably provided on the pneumatic assembly. Through rotate on the start-up subassembly and set up first roller, first roller is along work piece direction of delivery rolling contact, plays the supporting role to the work piece.

In order to ensure that the workpiece is clamped stably and reliably, a connecting rod is arranged between the two groups of clamping assemblies, one end of the connecting rod is arranged on the pneumatic assembly of one group of clamping assemblies in the two groups of clamping assemblies in a sliding mode, and the other end of the connecting rod is hinged to the supporting assembly of the other group of clamping assemblies in the two groups of clamping assemblies. Through set up the connecting rod between two sets of centre gripping subassemblies, the synchronous motion of every group centre gripping subassembly is played to the connecting rod, and this can guarantee that the supporting component on every group pneumatic component supports reliable and stable to the work piece.

In order to realize that one end of the connecting rod slides on the pneumatic assembly, furthermore, one end of the connecting rod, which is far away from the supporting assembly, is hinged with a sliding block, a linear guide rail is arranged on the pneumatic assembly along the displacement direction of the supporting assembly, the sliding block is matched with the linear guide rail, and the sliding block is arranged on the linear guide rail in a sliding manner. One end of the connecting rod is hinged to the sliding block, and the sliding block is arranged on the linear guide rail in a sliding mode, so that one end of the connecting rod slides on the pneumatic assembly.

The utility model has the advantages that: the utility model discloses pneumatic chuck is when using, the one end of keeping away from the centre gripping subassembly on through the base plate sets up fixed subassembly, and be close to relatively or keep away from by control mechanism control fixed block, and realize carrying out centre gripping or pine take off to the work piece, just so can not appear keeping somewhere the phenomenon that does not have the centre gripping and can't carry out processing at last work piece, avoided current pneumatic chuck only circumference supporting role, and when section bar processing to last, pneumatic chuck can't be processing treatment to last section tails, because can't carry out the centre gripping to last section tails, lead to the section bar extravagant, cause the wasting of resources, and increase manufacturing cost's problem.

Drawings

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

Fig. 1 is a schematic three-dimensional structure of the present invention;

fig. 2 is a first schematic view of the installation structure of the fixing component and the clamping component in the present invention;

FIG. 3 is a schematic view of the mounting structure of the fixing component and the clamping component in the present invention;

fig. 4 is a schematic view of the installation structure in the cylinder body of the present invention.

In the figure: 1. the device comprises a base plate, 2, a fixed block, 3, a first air cylinder, 4, a first guide shaft, 5, a cylinder body, 6, a first-stage piston rod, 7, a second-stage piston rod, 8, a first piston, 9, a second piston, 10, a slide way, 11, a rodless cavity, 12, a first rod cavity, 13, a second rod cavity, 14, a third through hole, 15, a second guide shaft, 16, a first roller shaft, 17, a connecting rod, 18, a sliding block, 19 and a linear guide rail.

Detailed Description

The utility model discloses the following embodiment of combining does further detailing:

the utility model discloses not confine the following embodiment to, general technical personnel in this field can adopt other multiple embodiment to implement according to the utility model discloses a, perhaps all adopt the utility model discloses a design structure and thinking do simple change or change, all fall into the utility model discloses a protection scope. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

As shown in fig. 1-4, an air chuck includes a clamping assembly disposed on a substrate 1 and supporting or separating a workpiece, a fixing assembly is disposed at an end of the substrate 1, which is located at a position where the workpiece is far away from the supporting assembly, the fixing assembly includes at least two fixing blocks 2, the fixing blocks 2 are disposed along a circumferential direction of the workpiece and form a clamping area for clamping the workpiece, and a control mechanism for controlling the fixing blocks 2 to be relatively close to or far away from the substrate 1 is disposed on the substrate 1 and clamping or releasing the workpiece is achieved.

The fixed components are at least two groups, and the two groups of fixed components are arranged along the axial direction of the workpiece.

The control mechanism comprises a first air cylinder 3 arranged on the base plate 1, and the fixed block 2 is arranged on the extending end of the first air cylinder 3. A guide roller is also arranged between the two oppositely arranged first air cylinders 3, and the fixed block 2 is arranged on the guide roller in a sliding manner, so that the displacement stability and reliability of the guide roller are ensured.

The clamping assemblies are two groups, the two groups of clamping assemblies are arranged in an orthogonal mode, and the two groups of clamping assemblies are not located on the same plane.

Every group the centre gripping subassembly includes the pneumatic subassembly of two relative settings, two all be provided with supporting component on the pneumatic subassembly, two sets of enclose between the supporting component on the pneumatic subassembly and become the centre gripping region that is used for the work piece to pass through to two supporting components of control relatively draw close or keep away from through pneumatic component, thereby realize the support or break away from to the work piece.

A first guide assembly used for guiding the displacement of the support assembly is arranged between the fixed assemblies, the first guide assembly comprises a first guide shaft 4 arranged between the two pneumatic assemblies, and the support assembly is arranged on the first guide shaft 4 in a sliding mode.

The pneumatic assembly comprises a cylinder body 5, a first-stage piston rod 6 and a second-stage piston rod 7, a first piston 8 matched with the cylinder body is arranged in the cylinder body 5 in a sliding mode, one end of the first-stage piston rod 6 is arranged on the first piston 8, the other end of the first-stage piston rod 6 protrudes out of the cylinder body 5, a slide way 10 extends inwards towards the first-stage piston rod 6 along the axial direction of the first-stage piston rod 8, a second piston 9 matched with the slide way 10 is arranged in the slide way 10, one end of the second-stage piston rod 7 is arranged on the second piston 9, the other end of the second-stage piston rod 7 protrudes out of the first-stage piston rod 6, a rodless cavity 11 is formed between one end, away from the first-stage piston rod 6, of the second piston 9, and the cylinder body 5, the first piston 8 is located between one end of the first-stage piston rod 6 and the cylinder body 5 to form a first rod cavity 12, the second piston 9 is located between the second-stage piston rod 7 and the slide 10 to form a second rod cavity 13, a first through hole communicated with the first rod cavity 12 is formed in the cylinder body 5, a second through hole communicated with the rodless cavity 11 is formed in the cylinder body 5, and a third through hole 14 communicated with the first rod cavity 12 and the second rod cavity 13 is formed in the first piston 8.

The support assembly includes a first roller 16 rotatably disposed on the pneumatic assembly.

A connecting rod 17 is arranged between the two groups of clamping assemblies, one end of the connecting rod 17 is slidably arranged on the pneumatic assembly of one group of clamping assemblies in the two groups of clamping assemblies, and the other end of the connecting rod 17 is hinged to the supporting assembly of the other group of clamping assemblies in the two groups of clamping assemblies.

One end, far away from the supporting component, of the connecting rod 17 is hinged with a sliding block 18, a linear guide rail 19 is arranged on the pneumatic component along the displacement direction of the supporting component, the sliding block 18 is matched with the linear guide rail 19, and the sliding block 18 is arranged on the linear guide rail 19 in a sliding mode.

When the pneumatic chuck is used, firstly, when a workpiece needs to be fixed, the first cylinder 3 is started and drives the two fixing blocks 2 to relatively displace, and the workpiece is fixed until the fixing blocks 2 are in contact with the workpiece;

the workpiece is conveyed to a clamping area which is formed by enclosing supporting components on two groups of clamping components and used for the workpiece to pass through, an external air source is started and the workpiece is conveyed to a cylinder body 5, the rodless cavity 11 is inflated, a first piston 8 drives a first-stage piston rod 7 to extend out of the cylinder body 5, a second piston 9 displaces in a slide way 10 and drives a second-stage piston rod 7 to extend out of the first-stage piston rod 6, a first roller shaft 16 is rotatably arranged on a base on the second-stage piston rod 7 through a bearing, a guide hole matched with a second guide shaft 15 is formed in the base, so that the base is guided, the supporting components are guided, along with the extension of the first-stage piston rod 6 and the second-stage piston rod 7 until the first-stage piston rod 6 and the second-stage piston rod 7 are contacted with the workpiece, a connecting rod 17 can also rotate on the supporting components along with the extension of the second-stage piston rod 7, and meanwhile, the other end of the connecting rod 17 drives a sliding block 18 to slide on a pneumatic component, the two-end supporting assembly is used for synchronously clamping the workpiece, so that the workpiece is ensured to be stably and reliably clamped, and the phenomenon that the workpiece is loosened due to uneven stress when clamped is avoided.

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.

Claims

1. An air chuck comprising a clamping assembly arranged on a base plate (1) and supporting or releasing a workpiece, characterized in that: the one end that the supporting component was kept away from to the work piece that lies in on base plate (1) is provided with fixed subassembly, fixed subassembly includes two at least fixed blocks (2), fixed block (2) are around the work piece and form the centre gripping district that is used for the centre gripping work piece, be provided with on base plate (1) and be used for controlling fixed block (2) and be close to relatively or the control mechanism who keeps away from to the realization carries out the centre gripping to the work piece or takes off.

2. The air chuck according to claim 1, wherein: the fixed components are at least two groups, and the two groups of fixed components are arranged along the axial direction of the workpiece.

3. The air chuck according to claim 1 or 2, wherein: the control mechanism comprises a first cylinder (3) arranged on the substrate (1), and the fixed block (2) is arranged on the extending end of the first cylinder (3).

4. The air chuck according to claim 1, wherein: the clamping assemblies are two groups, the two groups of clamping assemblies are arranged in an orthogonal mode, and the two groups of clamping assemblies are not located on the same plane.

5. The air chuck according to claim 4, wherein: every group the centre gripping subassembly includes the pneumatic subassembly of two relative settings, two all be provided with supporting component on the pneumatic subassembly, two sets of enclose between the supporting component on the pneumatic subassembly and become the centre gripping region that is used for the work piece to pass through to two supporting components of control relatively draw close or keep away from through pneumatic component, thereby realize the support or break away from to the work piece.

6. The air chuck according to claim 5, wherein: a first guide assembly used for guiding the displacement of the support assembly is arranged between the fixed assemblies, the first guide assembly comprises a first guide shaft (4) arranged between the two pneumatic assemblies, and the support assembly is arranged on the first guide shaft (4) in a sliding mode.

7. The air chuck according to claim 6, wherein: the pneumatic assembly comprises a cylinder body (5), a first-stage piston rod (6) and a second-stage piston rod (7), a first piston (8) matched with the cylinder body is arranged in the cylinder body (5) in a sliding mode, one end of the first-stage piston rod (6) is arranged on the first piston (8), the other end of the first-stage piston rod (6) protrudes out of the cylinder body (5), one end of the first piston (8) extends inwards to the first-stage piston rod (6) along the axial direction of the first piston (8) to form a slide way (10), a second piston (9) matched with the slide way (10) is arranged in the slide way (10), one end of the second-stage piston rod (7) is arranged on the second piston (9), the other end of the second-stage piston rod (7) protrudes out of the first-stage piston rod (6), one end of the first piston (8) far away from the first-stage piston rod (6) and one end of the second piston (9) far away from the second-stage piston rod (7) form a rodless cavity (11) with the cylinder body (5), first piston (8) are located and form first pole chamber (12) between one end and cylinder body (5) of one-level piston rod (6), second piston (9) are located and form second pole chamber (13) between second grade piston rod (7) and slide (10), be provided with on cylinder body (5) and first through-hole that has pole chamber (12) intercommunication, be provided with on cylinder body (5) and have the second through-hole that pole chamber (11) communicate with no pole, be provided with on first piston (8) and have pole chamber (12) and second third through-hole (14) that have pole chamber (13) intercommunication.

8. The air chuck according to claim 4, wherein: every group be provided with between the centre gripping subassembly and be used for carrying out the second direction subassembly that leads to the supporting component displacement, second direction subassembly is including setting up second guiding axle (15) between pneumatic component, the supporting component slides and sets up on second guiding axle (15).

9. The air chuck according to claim 5, wherein: the support assembly includes a first roller shaft (16) rotatably disposed on the pneumatic assembly.

10. The air chuck according to claim 4, wherein: and a connecting rod (17) is arranged between the two groups of clamping components, one end of the connecting rod (17) is slidably arranged on the pneumatic component of one group of clamping components in the two groups of clamping components, and the other end of the connecting rod (17) is hinged on the supporting component of the other group of clamping components in the two groups of clamping components.

11. The air chuck as set forth in claim 10, wherein: one end, far away from the supporting component, of the connecting rod (17) is hinged with a sliding block (18), a linear guide rail (19) is arranged on the pneumatic component along the displacement direction of the supporting component, the sliding block (18) is matched with the linear guide rail (19), and the sliding block (18) is arranged on the linear guide rail (19) in a sliding mode.