CN215145883U

CN215145883U - Pneumatic chuck suitable for special-shaped section bar

Info

Publication number: CN215145883U
Application number: CN202121270051.8U
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 belongs to the technical field of the pneumatic chuck technique and specifically relates to a pneumatic chuck suitable for special-shaped section bar is related to, including two sets of centre gripping subassemblies that set up on the base plate, it is two sets of mutual quadrature sets up between the centre gripping subassembly, and is two sets of centre gripping subassembly is not on the coplanar, 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, the utility model is suitable for a pneumatic chuck of special-shaped section bar when using, through set up the direction subassembly to the supporting component direction on every group rack subassembly, has just so guaranteed that the direction subassembly supports stably, can not take place the phenomenon of incline, just also makes pneumatic subassembly operation reliable and stable.

Description

Pneumatic chuck suitable for special-shaped section bar

Technical Field

The utility model belongs to the technical field of pneumatic chuck technique and specifically relates to a pneumatic chuck suitable for special-shaped section bar 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 utility model provides a four-jaw automatic centering pneumatic chuck, its application number is CN201810227536.5, and disclose including two sets of two claw clamping mechanism that are not set up on the coplanar, and cylinder extension bar among the clamping mechanism receives the stroke restriction when its centre gripping work piece of such structure, make centre gripping work piece size receive the restriction, influence production efficiency when serious, and when the cylinder stretches out the end very long time, can receive very big effort on stretching out the end, can lead to the cylinder to appear serious wearing and tearing for a long time, reduce cylinder life, thereby increase manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problem that an extending rod of an air cylinder is limited by stroke, the size of a clamping workpiece is limited, the production efficiency is influenced seriously, when the extending end of the air cylinder is very long, the extending end can be subjected to a great acting force, the air cylinder can be seriously abraded for a long time, the service life of the air cylinder is shortened, and the production cost is increased, the air chuck suitable for the special-shaped section is provided.

The utility model provides a technical scheme that its technical problem adopted is: a pneumatic chuck suitable for special-shaped profiles comprises two groups of clamping assemblies arranged on a base plate, wherein the two groups of clamping assemblies are arranged in an orthogonal mode, the two groups of clamping assemblies are not arranged on the same plane, each group of clamping assemblies comprises two pneumatic assemblies arranged oppositely, supporting assemblies are arranged on the two pneumatic assemblies, a clamping area for a workpiece to pass through is formed by the supporting assemblies on the two groups of pneumatic assemblies in a surrounding mode, and the two supporting assemblies are controlled to be relatively close to or far away from each other through the pneumatic assemblies, so that the workpiece is supported or separated;

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, a slide way extends inwards from one end of the first piston to the primary piston rod along the axial direction of the primary piston, a second piston matched with the slide way is arranged in the slide way, the other end of the secondary piston rod protrudes out of the primary piston rod, the other end of the second piston rod protrudes out of the first piston, a rodless cavity is formed between one end, away from the primary piston rod, of the first piston and one end, away from the secondary piston rod, of the second piston and the cylinder body, a first rod cavity is formed between one end, located on the primary piston rod, of the first piston and the cylinder body, and a second rod cavity is formed between the second piston and the slide way, 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. Form the two-stage through one-level piston rod and second grade piston rod and stretch out, can increase the stroke like this on the one hand, reduce the occupation space of piston rod when on the other hand contracts to realize that pneumatic component drives the supporting component displacement, set up the direction subassembly to the supporting component direction on every group rack subassembly, just so guaranteed that the direction subassembly supports stably, can not take place the phenomenon of incline, just also make pneumatic component operation reliable and stable.

In order to realize the guide assembly, furthermore, a guide assembly for guiding the displacement of the support assembly is arranged between each group of clamping assemblies, the guide assembly comprises a guide shaft, and the support assembly is arranged on the guide shaft in a sliding manner. Through set up the guiding axle between every pneumatic assembly of group to the supporting component slides and sets up on the guiding axle, has restricted supporting component's displacement direction like this, has guaranteed that pneumatic assembly displacement is reliable and stable.

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.

For better supporting to the work piece, further, rotate on the supporting component and be provided with the second roller, the second roller sets up with first roller is parallel to each other. The second roll shaft is arranged on the supporting component in parallel and level with the first roll shaft, and the second roll shaft also plays a supporting role for the workpiece and is in rolling contact with the workpiece.

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 is suitable for an air chuck of dysmorphism section bar is when using, through set up the direction subassembly to the supporting component direction on every group rack subassembly, just so guaranteed that the direction subassembly supports stably, the phenomenon of incline can not take place, just also make air subassembly operation reliable and stable, the cylinder extension bar has been avoided receiving the stroke restriction, make the centre gripping work piece size receive the restriction, influence production efficiency when serious, and when the cylinder stretches out to hold very long time, it can receive very big effort to stretch out to serve, can lead to the cylinder to appear serious wearing and tearing for a long time, reduce cylinder life, thereby increase manufacturing cost's problem.

Drawings

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

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

FIG. 2 is a schematic structural view of a pneumatic assembly of the present invention;

FIG. 3 is a first schematic view of the installation structure between two sets of clamping assemblies according to the present invention;

fig. 4 is a schematic view of a mounting structure between two sets of clamping assemblies according to the present invention.

In the figure: 1. the device comprises a base plate, 2, a guide shaft, 3, a cylinder body, 4, a first-stage piston rod, 5, a second-stage piston rod, 6, a first piston, 7, a slide way, 8, a second piston, 9, a rodless cavity, 10, a first rod cavity, 11, a second rod cavity, 12, a third through hole, 13, a first roller shaft, 14, a second roller shaft, 15, a connecting rod, 16, a sliding block, 17 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 suitable for special-shaped section bar, includes two sets of centre gripping subassemblies that set up on base plate 1, and is two sets of mutually quadrature sets up between the centre gripping subassembly, and is two sets of centre gripping subassembly is not on the coplanar, every group centre gripping subassembly includes the pneumatic subassembly of two relative settings, two all be provided with supporting component on the pneumatic subassembly, it is two sets of enclose synthetic clamping area who is used for the work piece to pass through between the last supporting component of pneumatic subassembly to control two supporting component and draw close or keep away from relatively through pneumatic subassembly, thereby realize the support or break away from the work piece, every group be provided with between the centre gripping subassembly and be used for carrying out the direction subassembly that leads to the supporting component displacement, the direction subassembly includes guiding axle 2, the supporting component slides and sets up on guiding axle 2.

The pneumatic assembly comprises a cylinder body 3, a first-stage piston rod 4 and a second-stage piston rod 5, a first piston 6 matched with the cylinder body 3 is arranged in the cylinder body 3 in a sliding mode, one end of the first-stage piston rod 4 is arranged on the first piston 6, the other end of the first-stage piston rod 4 protrudes out of the cylinder body 3, one end of the first piston 6 extends inwards to the first-stage piston rod 4 along the axial direction of the first-stage piston rod 4 to form a slide 7, a second piston 8 matched with the slide 7 is arranged in the slide 7, one end of the second-stage piston rod 5 is arranged on the second piston 8, the other end of the second-stage piston rod 5 protrudes out of the first-stage piston rod 4, a rodless cavity 9 is formed between one end of the first piston 6, far away from the first-stage piston rod 4, one end of the second piston 8, far away from the second-stage piston rod 5 and the cylinder body 3, and a first rod cavity 10 is formed between one end of the first piston 6, located on the first-stage piston rod 4 and the cylinder body 3, the second piston 8 is located between the second-stage piston rod 5 and the slide 7 to form a second rod cavity 11, a first through hole communicated with the first rod cavity 10 is formed in the cylinder body 3, a second through hole communicated with the rodless cavity 9 is formed in the cylinder body 3, and a third through hole 12 communicated with the first rod cavity 10 and the second rod cavity 11 is formed in the first piston 6.

The support assembly comprises a first roller shaft 13 rotatably arranged on the pneumatic assembly.

The last rotation of supporting component is provided with second roller 14, second roller 14 sets up with first roller 13 mutual parallel and level.

A connecting rod 15 is arranged between the two groups of clamping assemblies, one end of the connecting rod 15 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 15 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 15 is hinged with a sliding block 16, a linear guide rail 17 is arranged on the pneumatic component along the displacement direction of the supporting component, the sliding block 16 is matched with the linear guide rail 17, and the sliding block 16 is arranged on the linear guide rail 17 in a sliding mode.

When the pneumatic chuck suitable for the special-shaped section is used, a workpiece is conveyed to a clamping area which is formed by enclosing and used for the workpiece to pass through by the supporting components on the two groups of clamping components, an external air source is started and the workpiece is conveyed to the cylinder body 3, the rodless cavity 9 is inflated, the first piston 6 drives the first-stage piston rod 4 to extend out of the cylinder body 3, the second piston 8 displaces in the slide 7 and drives the second-stage piston rod 5 to extend out of the first-stage piston rod 4, the first roller shaft 13 and the second roller shaft 14 are both rotatably arranged on the base on the second-stage piston rod 5 through bearings, the base is provided with guide holes matched with the guide shafts 2, so that the guide effect on the base is achieved, the guide effect on the supporting components is achieved, the connecting rod 15 can also rotate on the supporting components along with the extension of the first-stage piston rod 4 and the second-stage piston rod 5 until the connecting rod is contacted with the workpiece, and meanwhile, the other end of the connecting rod 15 drives the sliding block 16 to slide on the 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. The utility model provides an air chuck suitable for dysmorphism section bar, includes two sets of centre gripping subassemblies that set up on base plate (1), and is two sets of mutual quadrature sets up between the centre gripping subassembly, and two sets of the centre gripping subassembly is not on the coplanar, its characterized in that: each group of clamping assemblies comprises two pneumatic assemblies which are oppositely arranged, supporting assemblies are arranged on the two pneumatic assemblies, a clamping area for a workpiece to pass through is enclosed between the two groups of supporting assemblies, and the two supporting assemblies are controlled to relatively approach or move away through the pneumatic assemblies, so that the workpiece is supported or separated;

the pneumatic assembly comprises a cylinder body (3), a first-stage piston rod (4) and a second-stage piston rod (5), a first piston (6) matched with the cylinder body is arranged in the cylinder body (3) in a sliding mode, one end of the first-stage piston rod (4) is arranged on the first piston (6), the other end of the first-stage piston rod (4) protrudes out of the cylinder body (3), a slide way (7) extends inwards towards the first-stage piston rod (4) along the axial direction of the first-stage piston rod, a second piston (8) matched with the slide way is arranged in the slide way (7), one end of the second-stage piston rod (5) is arranged on the second piston (8), the other end of the second-stage piston rod (5) protrudes out of the first-stage piston rod (4), a rodless cavity (9) is formed between one end of the first piston (6), far away from the first-stage piston rod (4), one end of the second piston (8), far away from the second-stage piston rod (5) and the cylinder body (3), first piston (6) are located and form first pole chamber (10) between one end and cylinder body (3) of one-level piston rod (4), second piston (8) are located and form second pole chamber (11) between second grade piston rod (5) and slide (7), be provided with on cylinder body (3) with first through-hole that has pole chamber (10) intercommunication, be provided with on cylinder body (3) with the second through-hole that does not have pole chamber (9) intercommunication, be provided with on first piston (6) and have pole chamber (10) and second third through-hole (12) that have pole chamber (11) intercommunication.

2. The air chuck for special-shaped profiles according to claim 1, characterized in that: and a guide assembly for guiding the displacement of the support assembly is arranged between each group of clamping assemblies, the guide assembly comprises guide shafts (2) arranged between the pneumatic assemblies, and the support assemblies are arranged on the guide shafts (2) in a sliding manner.

3. The air chuck for special-shaped profiles according to claim 1, characterized in that: the support assembly comprises a first roller shaft (13) rotatably arranged on the pneumatic assembly.

4. The air chuck for special-shaped profiles according to claim 3, characterized in that: the last rotation of supporting component is provided with second roller (14), second roller (14) and first roller (13) are parallel and level each other and set up.

5. The air chuck for special-shaped profiles according to claim 1, characterized in that: and a connecting rod (15) is arranged between the two groups of clamping components, one end of the connecting rod (15) 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 (15) is hinged on the supporting component of the other group of clamping components in the two groups of clamping components.

6. The air chuck for special-shaped profiles according to claim 5, characterized in that: one end, far away from the supporting component, of the connecting rod (15) is hinged with a sliding block (16), a linear guide rail (17) is arranged on the pneumatic component along the displacement direction of the supporting component, the sliding block (16) is matched with the linear guide rail (17), and the sliding block (16) is arranged on the linear guide rail (17) in a sliding mode.