CN113601042A

CN113601042A - Four-jaw chuck for laser pipe cutting machine

Info

Publication number: CN113601042A
Application number: CN202111011588.7A
Authority: CN
Inventors: 徐梅霞
Original assignee: Lingman Machinery Technology Changzhou Co ltd
Current assignee: Lingman Machinery Technology Changzhou Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2021-11-05

Abstract

The invention relates to a four-jaw chuck for a laser pipe cutting machine, which comprises a fixed seat, wherein a turntable is rotatably arranged on the fixed seat, the front side of the turntable is respectively provided with a transverse clamping device and a longitudinal clamping device, the transverse clamping device and the longitudinal clamping device both comprise four rotating wheels arranged at four corners, wherein, any three pairs of adjacent rotating wheels are in transmission fit through annular flexible parts, wherein, the two flexible parts which are oppositely arranged are a first driven flexible part and a second driven flexible part respectively, the rest flexible part is a driving flexible part, the outer side edge of the first driven flexible part is arranged between the inner side edges of the second driven flexible parts, and a press roller assembly is arranged between the inner side edge of the first driven flexible piece and the outer side edge of the second driven flexible piece, the compression roller assembly of the transverse clamping device is longitudinally arranged, the compression roller assembly of the longitudinal clamping device is transversely arranged, and the turntable is provided with a driving device for driving the driving flexible part to move; the invention has the characteristics of large jaw stroke, small size and low manufacturing cost.

Description

Four-jaw chuck for laser pipe cutting machine

Technical Field

The invention relates to the technical field of laser pipe cutting machines, in particular to a four-jaw chuck for a laser pipe cutting machine.

Background

Common laser pipe cutting machine four-jaw chuck in market, including connecting rod cylinder structure, processing is taken time and the cost is great, still has following shortcoming: 1. the stroke of the existing chuck is mainly that the cylinder is in a direct-pushing structure, the clamping range is 5-360mm, the stroke of a clamping jaw is small, and a hole in the middle of a traditional turntable is limited by the size of the cylinder and is difficult to open; 2. if a workpiece with the size of more than 360mm is met, a larger stroke is needed, the larger stroke causes that the installation space in the diameter direction is also required to be large, the size and the weight of the required chuck are increased, and the external dimension is large and heavy. 3. The structure is complicated, the installation and the disassembly are difficult, and the maintenance cost is high.

Disclosure of Invention

The invention aims to solve the technical problem that the four-jaw chuck for the laser pipe cutting machine has the characteristics of large jaw stroke, small size and low manufacturing cost.

In order to solve the technical problem, the invention provides a four-jaw chuck, which comprises a fixed seat, wherein a rotary table is rotatably arranged on the fixed seat, the front side of the turntable is respectively provided with a transverse clamping device and a longitudinal clamping device, the transverse clamping device and the longitudinal clamping device both comprise four rotating wheels arranged at four corners, wherein, any three pairs of adjacent rotating wheels are in transmission fit through annular flexible parts, wherein, the two flexible parts which are oppositely arranged are a first driven flexible part and a second driven flexible part respectively, the rest flexible part is a driving flexible part, the outer side edge of the first driven flexible part is arranged between the inner side edges of the second driven flexible parts, and a press roller assembly is arranged between the inner side edge of the first driven flexible piece and the outer side edge of the second driven flexible piece, the compression roller assembly of the transverse clamping device is longitudinally arranged, the compression roller assembly of the longitudinal clamping device is transversely arranged, and the turntable is provided with a driving device for driving the driving flexible part to move.

Further, the flexible member is a synchronous belt, and the rotating wheel is a synchronous pulley; through synchronous belt drive, the synchronism of motion between the first driven flexible part and the second driven flexible part is better.

Furthermore, the driving device comprises a double-piston-rod cylinder, the outer ends of two piston rods of the double-piston-rod cylinder are fixedly connected to the front side of the turntable, and part of the outer side edge of the driving flexible part is fixedly connected to a cylinder body of the double-piston-rod cylinder through a pressing plate; the double-piston-rod cylinder is an automatic standard component and is low in cost.

Furthermore, of the four rotating wheels arranged in four corners, the rest pair of adjacent rotating wheels are in transmission fit through a flexible part, and part of the outer side edge of the flexible part is driven to move through another driving device arranged on the rotating disc; the transverse clamping device and the longitudinal clamping device are driven by a pair of driving devices, the driving force is larger, and the movement synchronism between the first driven flexible part and the second driven flexible part is better; a pair of driving devices are oppositely arranged, so that the size of the outer circle of the rotary disc can be designed to be smaller.

Furthermore, the transverse and longitudinal clamping devices respectively comprise at least one optical axis, two ends of each optical axis are fixedly connected to the front side of the turntable, the compression roller assembly comprises a fixed plate, the fixed plate is in sliding fit on the optical axis through a linear bearing, at least 1 compression roller is arranged on the inner side of the fixed plate, and two ends of the fixed plate are respectively and fixedly connected with corresponding side edges of the first driven flexible part and the second driven flexible part through a pressing plate; the compression roller assemblies are guided through the optical axis and the linear bearing, so that the pair of compression roller assemblies can move in opposite directions stably and in parallel.

Furthermore, 4 wheel shafts corresponding to the positions of the rotating wheels are vertically arranged on the front side of the rotating disc, the rotating wheels are sleeved on the wheel shafts, and the distance between the wheel shafts can be adjusted by any 2 wheel shafts arranged diagonally through a tensioning device; any 2 wheel shafts arranged diagonally realize the adjustment of the distance between the wheel shafts through a tensioning device, so that all the flexible parts are in a tensioning state.

Furthermore, the tensioning device comprises 2C-shaped supports which are arranged oppositely, the C-shaped supports are fixedly connected to the front side of the rotary table, U-shaped grooves are formed in two end faces of each C-shaped support, the U-shaped grooves in two sides are respectively in sliding fit with two ends of the wheel shaft, adjusting screws penetrate through two ends of each C-shaped support, and the adjusting screws are in threaded fit with the wheel shaft; the position of the wheel shaft in the U-shaped groove is controlled by adjusting the adjusting screw.

The working method of the four-jaw chuck for the laser pipe cutting machine comprises the following steps:

1) the driving device drives the driving flexible piece to move and simultaneously drives the first driven flexible piece and the second driven flexible piece to synchronously move, at the moment, the outer side edge of the first driven flexible piece and the inner side edge of the second driven flexible piece move in the same direction, and the inner side edge of the first driven flexible piece and the outer side edge of the second driven flexible piece move in the same direction, so that the pair of press roll assemblies move in opposite directions, when the pair of press roll assemblies linearly move in opposite directions, the pipe can be clamped, otherwise, the pipe is loosened, the pair of press roll assemblies of the transverse clamping device are used for transversely clamping or loosening the pipe, and the pair of press roll assemblies of the longitudinal clamping device are used for longitudinally clamping or loosening the pipe.

The invention has the beneficial effects that: the driving device drives the driving flexible part to move and simultaneously drives the first driven flexible part and the second driven flexible part to synchronously move, at the moment, the outer side edge of the first driven flexible part and the inner side edge of the second driven flexible part move in the same direction, and the inner side edge of the first driven flexible part and the outer side edge of the second driven flexible part move in the same direction, so that the pair of press roll assemblies move in opposite directions, when the pair of press roll assemblies linearly move in opposite directions, the pipe material can be clamped, otherwise, the pipe material is loosened, the pair of press roll assemblies of the transverse clamping device are used for transversely clamping or loosening the pipe material, and the pair of press roll assemblies of the longitudinal clamping device are used for longitudinally clamping or loosening the pipe material; the four-jaw chuck of the invention is synchronous and driven by the flexible piece, the structure fully utilizes the space of the disc in the horizontal direction, the hole in the middle of the chuck turntable can be opened greatly, the jaw (namely the compression roller component) of the four-jaw chuck has large stroke, and the flexible piece is an automatic standard piece, so that the purchasing time is short, the cost is low, and the production efficiency is improved; the four-jaw chuck has the characteristics of large jaw stroke, small size and low manufacturing cost.

Drawings

In order to clarify the explanation of the innovative principles of the invention and its advantages compared with the prior art four-jaw chuck, a possible embodiment is explained below by way of a non-limiting example applying said principles, with the aid of the annexed drawings. In the figure:

FIG. 1 is an exploded view of a four jaw chuck for a laser pipe cutter of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1C;

FIG. 3 is a perspective view of the four-jaw chuck;

FIG. 4 is a front view of FIG. 3;

FIG. 5 is a cross-sectional view taken at line A-A of FIG. 4;

fig. 6 is a left side view of fig. 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

Referring to fig. 1-6, a four-jaw chuck for a laser pipe cutting machine according to this embodiment includes a fixed seat 1, a rotating plate 2 is rotatably disposed on the fixed seat 1, a transverse clamping device 3 and a longitudinal clamping device 4 are respectively disposed on a front side of the rotating plate 2, the transverse clamping device 3 and the longitudinal clamping device 4 each include four rotating wheels 5 arranged at four corners, any three pairs of adjacent rotating wheels 5 are in transmission fit with each other through an annular flexible member 6, two flexible members 6 disposed oppositely are a first driven flexible member 7 and a second driven flexible member 7-1, the remaining one flexible member 6 is a driving flexible member 8, a pressing roller assembly 9 is disposed between an outer side edge of the first driven flexible member 7 and an inner side edge of the second driven flexible member 7-1, and between an inner side edge of the first driven flexible member 7 and an outer side edge of the second driven flexible member 7-1, the press roll assembly 9 of the transverse clamping device 3 is longitudinally arranged, the press roll assembly 9 of the longitudinal clamping device 4 is transversely arranged, and the turntable 2 is provided with a driving device 10 for driving the driving flexible part 8 to move.

Preferably, the flexible member 6 is a timing belt, and the rotating wheel 5 is a timing pulley; the flexible element 6 can also be a chain or a rope and correspondingly the wheel 5 is a sprocket or a pulley.

Preferably, the driving device 10 includes a double-piston rod cylinder 11, outer ends of two piston rods of the double-piston rod cylinder 11 are both fixedly connected to the front side of the turntable 2, and a partial outer side edge of the active flexible member 8 is fixedly connected to a cylinder body of the double-piston rod cylinder 11 through a pressing plate 12; the driving device 10 can also consist of a motor and a feed screw nut mechanism, and part of the outer side edge of the active flexible part 8 is fixedly connected with a nut.

Preferably, among the four rotating wheels 5 arranged at four corners, the remaining pair of adjacent rotating wheels 5 are in transmission fit through a flexible member 6, and part of the outer side edge of the flexible member 6 is driven to move by another driving device 10 arranged on the rotating disc 2.

Horizontal, vertical clamping device 3, 4 all still include 2 optical axis 13 that the interval set up, the equal fixed connection in the front side of carousel 2 in the both ends of optical axis 13, compression roller assembly 9 includes fixed plate 14, fixed plate 14 passes through linear bearing 15 sliding fit on optical axis 13, the inboard of fixed plate 14 is equipped with 1 at least compression roller Y, the both ends of fixed plate 14 all through clamp plate 19 respectively with first, two driven flexible component 7, 7-1 correspond side fixed connection.

The front side of the turntable 2 is vertically provided with 4 wheel shafts 20 corresponding to the positions of the rotating wheels 5, the rotating wheels 5 are sleeved on the wheel shafts 20, and the distance between the two shaft shafts can be adjusted by any 2 wheel shafts 20 arranged diagonally through a tensioning device Z.

The tensioning device Z comprises 2C-shaped supports 16 which are oppositely arranged, the C-shaped supports 16 are fixedly connected to the front side of the turntable 2, two end faces of each C-shaped support 16 are respectively provided with a U-shaped groove 17, the U-shaped grooves 17 on the two sides are respectively in sliding fit with the two ends of a wheel shaft 20, two ends of each C-shaped support 16 are respectively provided with an adjusting screw 18 in a penetrating mode, and the adjusting screws 18 are in threaded fit with the wheel shafts 20.

Example 2

A method of operating the four-jaw chuck of embodiment 1, comprising the steps of:

the driving device 10 drives the driving flexible member 8 to move, and simultaneously drives the first and second driven flexible members 7, 7-1 to move synchronously, at this time, the outer side edge of the first driven flexible member 7 and the inner side edge of the second driven flexible member 7-1 move in the same direction, and the inner side edge of the first driven flexible member 7 and the outer side edge of the second driven flexible member 7-1 move in the same direction, so that the pair of roller assemblies 9 move in opposite directions, when the pair of roller assemblies 9 move linearly in opposite directions, the pipe can be clamped, otherwise, the pipe can be loosened, the pair of roller assemblies 9 of the transverse clamping device 3 are used for transversely clamping or loosening the pipe, and the pair of roller assemblies 9 of the longitudinal clamping device 4 are used for longitudinally clamping or loosening the pipe.

The driving device 10 drives the driving flexible member 8 to move, and simultaneously drives the first and second driven flexible members 7 and 7-1 to synchronously move, at this time, the outer side edge of the first driven flexible member 7 and the inner side edge of the second driven flexible member 7-1 move in the same direction, and the inner side edge of the first driven flexible member 7 and the outer side edge of the second driven flexible member 7-1 move in the same direction, so that the pair of roller assemblies 9 move in opposite directions, when the pair of roller assemblies 9 linearly move in opposite directions, the pipe can be clamped, otherwise, the pipe can be loosened, the pair of roller assemblies 9 of the transverse clamping device 3 are used for transversely clamping or loosening the pipe, and the pair of roller assemblies 9 of the longitudinal clamping device 4 are used for longitudinally clamping or loosening the pipe; the four-jaw chuck of the invention is synchronous and driven by the flexible part 6, the jaw (namely the compression roller component 9) of the four-jaw chuck of the structure has large stroke, and the flexible part 6 is an automatic standard part, so that the purchasing time is short, the cost is low, and the production efficiency is improved; the four-jaw chuck has the characteristics of large jaw stroke, small size and low manufacturing cost.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A four-jaw chuck for a laser pipe cutting machine is characterized by comprising a fixed seat (1), wherein a turntable (2) is rotatably arranged on the fixed seat (1), transverse clamping devices (3) and longitudinal clamping devices (4) are respectively arranged on the front side of the turntable (2), each of the transverse clamping devices and the longitudinal clamping devices (3) comprises four rotating wheels (5) arranged at four corners, any three pairs of adjacent rotating wheels (5) are in transmission fit through an annular flexible part (6), the two flexible parts (6) arranged oppositely are a first driven flexible part (7) and a second driven flexible part (7-1), the rest flexible part (6) is a driving flexible part (8), a compression roller assembly (9) is arranged between the outer side edge of the first driven flexible part (7) and the inner side edge of the second driven flexible part (7-1), and between the inner side edge of the first driven flexible part (7) and the outer side edge of the second driven flexible part (7-1), the pressing roller assembly (9) of the transverse clamping device (3) is longitudinally arranged, the pressing roller assembly (9) of the longitudinal clamping device (4) is transversely arranged, and the turntable (2) is provided with a driving device (10) for driving the driving flexible part (8) to move.

2. The four-jaw chuck according to claim 1, wherein: the flexible part (6) is a synchronous belt, and the rotating wheel (5) is a synchronous pulley.

3. The four-jaw chuck according to claim 1, wherein: the driving device (10) comprises a double-piston-rod cylinder (11), the outer ends of two piston rods of the double-piston-rod cylinder (11) are fixedly connected to the front side of the turntable (2), and the partial outer side edge of the driving flexible part (8) is fixedly connected to a cylinder body of the double-piston-rod cylinder (11) through a pressing plate (12).

4. The four-jaw chuck according to claim 3, wherein: among the four rotating wheels (5) arranged in four corners, the remaining pair of adjacent rotating wheels (5) are also in transmission fit through a flexible piece (6), and part of the outer side edge of the flexible piece (6) is driven to move through another driving device (10) arranged on the rotating disc (2).

5. The four-jaw chuck according to claim 1, wherein: horizontal, vertical clamping device (3, 4) all still include an at least optical axis (13), the equal fixed connection in the front side of carousel (2) in both ends of optical axis (13), compression roller subassembly (9) are including fixed plate (14), fixed plate (14) are through linear bearing (15) sliding fit on optical axis (13), the inboard of fixed plate (14) is equipped with 1 at least compression roller (Y), the both ends of fixed plate (14) all through clamp plate (19) respectively with the corresponding side fixed connection of first, two driven flexible components (7, 7-1).

6. The four-jaw chuck according to claim 1, wherein: 4 wheel shafts (20) corresponding to the positions of the rotating wheels (5) are vertically arranged on the front side of the rotating disc (2), the rotating wheels (5) are sleeved on the wheel shafts (20), and the distance between the two shaft shafts can be adjusted by the aid of any 2 wheel shafts (20) arranged diagonally through the tensioning devices (Z).

7. The four-jaw chuck according to claim 6, wherein: the tensioning device (Z) comprises 2C-shaped supports (16) which are arranged oppositely, the C-shaped supports (16) are fixedly connected to the front side of the rotary table (2), U-shaped grooves (17) are formed in two end faces of each C-shaped support (16), the U-shaped grooves (17) in the two sides are in sliding fit with the two ends of the wheel shaft (20) respectively, adjusting screws (18) are arranged at the two ends of each C-shaped support (16) in a penetrating mode, and the adjusting screws (18) are in threaded fit with the wheel shaft (20).

8. A method of operating a four jaw chuck for a laser pipe cutter as defined in claim 1, comprising the steps of:

1) the driving device (10) drives the driving flexible part (8) to move and simultaneously drives the first driven flexible part and the second driven flexible part (7, 7-1) to synchronously move, at the moment, the outer side edge of the first driven flexible piece (7) and the inner side edge of the second driven flexible piece (7-1) move in the same direction, the inner side edge of the first driven flexible member (7) and the outer side edge of the second driven flexible member (7-1) move in the same direction, so that a pair of press roller assemblies (9) move in opposite directions, when the pair of press roll components (9) do opposite linear motion, the pipe can be clamped, otherwise, the pipe is loosened, a pair of compression roller assemblies (9) of the transverse clamping device (3) is used for transversely clamping or loosening the pipe material, the pair of compression roller assemblies (9) of the longitudinal clamping device (4) is used for longitudinally clamping or loosening the pipe material.